S390
P: Martin Schwidefsky
M: schwidefsky@de.ibm.com
+P: Heiko Carstens
+M: heiko.carstens@de.ibm.com
M: linux390@de.ibm.com
L: linux-390@vm.marist.edu
W: http://www.ibm.com/developerworks/linux/linux390/
information in an s390 hypervisor environment.
config KEXEC
- bool "kexec system call (EXPERIMENTAL)"
- depends on EXPERIMENTAL
+ bool "kexec system call"
help
kexec is a system call that implements the ability to shutdown your
current kernel, and to start another kernel. It is like a reboot
source "fs/Kconfig"
+menu "Instrumentation Support"
+
source "arch/s390/oprofile/Kconfig"
+config KPROBES
+ bool "Kprobes (EXPERIMENTAL)"
+ depends on EXPERIMENTAL && MODULES
+ help
+ Kprobes allows you to trap at almost any kernel address and
+ execute a callback function. register_kprobe() establishes
+ a probepoint and specifies the callback. Kprobes is useful
+ for kernel debugging, non-intrusive instrumentation and testing.
+ If in doubt, say "N".
+
+endmenu
+
source "arch/s390/Kconfig.debug"
source "security/Kconfig"
#define CTL_APPLDATA_NET_SUM 2125
#define CTL_APPLDATA_PROC 2126
-#ifndef CONFIG_64BIT
-
-#define APPLDATA_START_INTERVAL_REC 0x00 /* Function codes for */
-#define APPLDATA_STOP_REC 0x01 /* DIAG 0xDC */
-#define APPLDATA_GEN_EVENT_RECORD 0x02
-#define APPLDATA_START_CONFIG_REC 0x03
-
-#else
-
-#define APPLDATA_START_INTERVAL_REC 0x80
-#define APPLDATA_STOP_REC 0x81
-#define APPLDATA_GEN_EVENT_RECORD 0x82
-#define APPLDATA_START_CONFIG_REC 0x83
-
-#endif /* CONFIG_64BIT */
-
#define P_INFO(x...) printk(KERN_INFO MY_PRINT_NAME " info: " x)
#define P_ERROR(x...) printk(KERN_ERR MY_PRINT_NAME " error: " x)
#define P_WARNING(x...) printk(KERN_WARNING MY_PRINT_NAME " status: " x)
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/errno.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/smp.h>
#include <linux/interrupt.h>
#include <linux/proc_fs.h>
#include <linux/page-flags.h>
#include <linux/swap.h>
#include <linux/pagemap.h>
#include <linux/sysctl.h>
-#include <asm/timer.h>
-//#include <linux/kernel_stat.h>
#include <linux/notifier.h>
#include <linux/cpu.h>
#include <linux/workqueue.h>
+#include <asm/appldata.h>
+#include <asm/timer.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/smp.h>
#include "appldata.h"
#define TOD_MICRO 0x01000 /* nr. of TOD clock units
for 1 microsecond */
-
-/*
- * Parameter list for DIAGNOSE X'DC'
- */
-#ifndef CONFIG_64BIT
-struct appldata_parameter_list {
- u16 diag; /* The DIAGNOSE code X'00DC' */
- u8 function; /* The function code for the DIAGNOSE */
- u8 parlist_length; /* Length of the parameter list */
- u32 product_id_addr; /* Address of the 16-byte product ID */
- u16 reserved;
- u16 buffer_length; /* Length of the application data buffer */
- u32 buffer_addr; /* Address of the application data buffer */
-};
-#else
-struct appldata_parameter_list {
- u16 diag;
- u8 function;
- u8 parlist_length;
- u32 unused01;
- u16 reserved;
- u16 buffer_length;
- u32 unused02;
- u64 product_id_addr;
- u64 buffer_addr;
-};
-#endif /* CONFIG_64BIT */
-
/*
* /proc entries (sysctl)
*/
int appldata_diag(char record_nr, u16 function, unsigned long buffer,
u16 length, char *mod_lvl)
{
- unsigned long ry;
- struct appldata_product_id {
- char prod_nr[7]; /* product nr. */
- char prod_fn[2]; /* product function */
- char record_nr; /* record nr. */
- char version_nr[2]; /* version */
- char release_nr[2]; /* release */
- char mod_lvl[2]; /* modification lvl. */
- } appldata_product_id = {
- /* all strings are EBCDIC, record_nr is byte */
+ struct appldata_product_id id = {
.prod_nr = {0xD3, 0xC9, 0xD5, 0xE4,
- 0xE7, 0xD2, 0xD9}, /* "LINUXKR" */
- .prod_fn = {0xD5, 0xD3}, /* "NL" */
+ 0xE7, 0xD2, 0xD9}, /* "LINUXKR" */
+ .prod_fn = 0xD5D3, /* "NL" */
.record_nr = record_nr,
- .version_nr = {0xF2, 0xF6}, /* "26" */
- .release_nr = {0xF0, 0xF1}, /* "01" */
- .mod_lvl = {mod_lvl[0], mod_lvl[1]},
- };
- struct appldata_parameter_list appldata_parameter_list = {
- .diag = 0xDC,
- .function = function,
- .parlist_length =
- sizeof(appldata_parameter_list),
- .buffer_length = length,
- .product_id_addr =
- (unsigned long) &appldata_product_id,
- .buffer_addr = virt_to_phys((void *) buffer)
+ .version_nr = 0xF2F6, /* "26" */
+ .release_nr = 0xF0F1, /* "01" */
+ .mod_lvl = (mod_lvl[0]) << 8 | mod_lvl[1],
};
- if (!MACHINE_IS_VM)
- return -ENOSYS;
- ry = -1;
- asm volatile(
- "diag %1,%0,0xDC\n\t"
- : "=d" (ry)
- : "d" (&appldata_parameter_list),
- "m" (appldata_parameter_list),
- "m" (appldata_product_id)
- : "cc");
- return (int) ry;
+ return appldata_asm(&id, function, (void *) buffer, length);
}
/************************ timer, work, DIAG <END> ****************************/
#include <linux/kernel_stat.h>
#include <linux/netdevice.h>
#include <linux/sched.h>
+#include <asm/appldata.h>
#include <asm/smp.h>
#include "appldata.h"
# CONFIG_VMLOGRDR is not set
# CONFIG_VMCP is not set
# CONFIG_MONREADER is not set
+CONFIG_MONWRITER=m
#
# Cryptographic devices
/*
- * fs/hypfs/hypfs.h
+ * arch/s390/hypfs/hypfs.h
* Hypervisor filesystem for Linux on s390.
*
* Copyright (C) IBM Corp. 2006
/*
- * fs/hypfs/hypfs_diag.c
+ * arch/s390/hypfs/hypfs_diag.c
* Hypervisor filesystem for Linux on s390. Diag 204 and 224
* implementation.
*
buf = diag204_get_buffer(INFO_EXT, &pages);
if (!IS_ERR(buf)) {
- if (diag204(SUBC_STIB7 | INFO_EXT, pages, buf) >= 0) {
+ if (diag204((unsigned long)SUBC_STIB7 |
+ (unsigned long)INFO_EXT, pages, buf) >= 0) {
diag204_store_sc = SUBC_STIB7;
diag204_info_type = INFO_EXT;
goto out;
}
- if (diag204(SUBC_STIB6 | INFO_EXT, pages, buf) >= 0) {
+ if (diag204((unsigned long)SUBC_STIB6 |
+ (unsigned long)INFO_EXT, pages, buf) >= 0) {
diag204_store_sc = SUBC_STIB7;
diag204_info_type = INFO_EXT;
goto out;
rc = PTR_ERR(buf);
goto fail_alloc;
}
- if (diag204(SUBC_STIB4 | INFO_SIMPLE, pages, buf) >= 0) {
+ if (diag204((unsigned long)SUBC_STIB4 |
+ (unsigned long)INFO_SIMPLE, pages, buf) >= 0) {
diag204_store_sc = SUBC_STIB4;
diag204_info_type = INFO_SIMPLE;
goto out;
buf = diag204_get_buffer(diag204_info_type, &pages);
if (IS_ERR(buf))
goto out;
- if (diag204(diag204_store_sc | diag204_info_type, pages, buf) < 0)
+ if (diag204((unsigned long)diag204_store_sc |
+ (unsigned long)diag204_info_type, pages, buf) < 0)
return ERR_PTR(-ENOSYS);
out:
return buf;
return rc;
}
-__exit void hypfs_diag_exit(void)
+void hypfs_diag_exit(void)
{
diag224_delete_name_table();
diag204_free_buffer();
/*
- * fs/hypfs/hypfs_diag.h
+ * arch/s390/hypfs_diag.h
* Hypervisor filesystem for Linux on s390.
*
* Copyright (C) IBM Corp. 2006
/*
- * fs/hypfs/inode.c
+ * arch/s390/hypfs/inode.c
* Hypervisor filesystem for Linux on s390.
*
* Copyright (C) IBM Corp. 2006
{
struct hypfs_sb_info *sb_info = sb->s_fs_info;
- hypfs_delete_tree(sb->s_root);
- hypfs_remove(sb_info->update_file);
- kfree(sb->s_fs_info);
- sb->s_fs_info = NULL;
+ if (sb->s_root) {
+ hypfs_delete_tree(sb->s_root);
+ hypfs_remove(sb_info->update_file);
+ kfree(sb->s_fs_info);
+ sb->s_fs_info = NULL;
+ }
kill_litter_super(sb);
}
obj-y := bitmap.o traps.o time.o process.o \
setup.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \
- semaphore.o s390_ext.o debug.o profile.o irq.o reipl_diag.o
+ semaphore.o s390_ext.o debug.o profile.o irq.o ipl.o
obj-y += $(if $(CONFIG_64BIT),entry64.o,entry.o)
obj-y += $(if $(CONFIG_64BIT),reipl64.o,reipl.o)
obj-$(CONFIG_VIRT_TIMER) += vtime.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
+obj-$(CONFIG_KPROBES) += kprobes.o
# Kexec part
S390_KEXEC_OBJS := machine_kexec.o crash.o
mvc __THREAD_per+__PER_address(4,%r1),__LC_PER_ADDRESS
mvc __THREAD_per+__PER_access_id(1,%r1),__LC_PER_ACCESS_ID
oi __TI_flags+3(%r9),_TIF_SINGLE_STEP # set TIF_SINGLE_STEP
+ tm SP_PSW+1(%r15),0x01 # kernel per event ?
+ bz BASED(kernel_per)
l %r3,__LC_PGM_ILC # load program interruption code
la %r8,0x7f
nr %r8,%r3 # clear per-event-bit and ilc
stosm __SF_EMPTY(%r15),0x03 # reenable interrupts
b BASED(sysc_do_svc)
+#
+# per was called from kernel, must be kprobes
+#
+kernel_per:
+ mvi SP_TRAP+1(%r15),0x28 # set trap indication to pgm check
+ la %r2,SP_PTREGS(%r15) # address of register-save area
+ l %r1,BASED(.Lhandle_per) # load adr. of per handler
+ la %r14,BASED(sysc_leave) # load adr. of system return
+ br %r1 # branch to do_single_step
+
/*
* IO interrupt handler routine
*/
#endif
lg %r9,__LC_THREAD_INFO # load pointer to thread_info struct
lg %r1,__TI_task(%r9)
+ tm SP_PSW+1(%r15),0x01 # kernel per event ?
+ jz kernel_per
mvc __THREAD_per+__PER_atmid(2,%r1),__LC_PER_ATMID
mvc __THREAD_per+__PER_address(8,%r1),__LC_PER_ADDRESS
mvc __THREAD_per+__PER_access_id(1,%r1),__LC_PER_ACCESS_ID
stosm __SF_EMPTY(%r15),0x03 # reenable interrupts
j sysc_do_svc
+#
+# per was called from kernel, must be kprobes
+#
+kernel_per:
+ lhi %r0,__LC_PGM_OLD_PSW
+ sth %r0,SP_TRAP(%r15) # set trap indication to pgm check
+ la %r2,SP_PTREGS(%r15) # address of register-save area
+ larl %r14,sysc_leave # load adr. of system ret, no work
+ jg do_single_step # branch to do_single_step
+
/*
* IO interrupt handler routine
*/
*/
stack_overflow:
lg %r15,__LC_PANIC_STACK # change to panic stack
- aghi %r1,-SP_SIZE
+ aghi %r15,-SP_SIZE
mvc SP_PSW(16,%r15),0(%r12) # move user PSW to stack
stmg %r0,%r11,SP_R0(%r15) # store gprs %r0-%r11 to kernel stack
la %r1,__LC_SAVE_AREA
je 0f
chi %r12,__LC_PGM_OLD_PSW
je 0f
- la %r1,__LC_SAVE_AREA+16
+ la %r1,__LC_SAVE_AREA+32
0: mvc SP_R12(32,%r15),0(%r1) # move %r12-%r15 to stack
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) # clear back chain
la %r2,SP_PTREGS(%r15) # load pt_regs
# load parameter file from ipl device
#
.Lagain1:
- l %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # ramdisk loc. is temp
+ l %r2,.Linitrd # ramdisk loc. is temp
bas %r14,.Lloader # load parameter file
ltr %r2,%r2 # got anything ?
bz .Lnopf
bnh .Lnotrunc
la %r2,895
.Lnotrunc:
- l %r4,INITRD_START+ARCH_OFFSET-PARMAREA(%r12)
+ l %r4,.Linitrd
clc 0(3,%r4),.L_hdr # if it is HDRx
bz .Lagain1 # skip dataset header
clc 0(3,%r4),.L_eof # if it is EOFx
# load ramdisk from ipl device
#
.Lagain2:
- l %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # addr of ramdisk
+ l %r2,.Linitrd # addr of ramdisk
+ st %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12)
bas %r14,.Lloader # load ramdisk
st %r2,INITRD_SIZE+ARCH_OFFSET-PARMAREA(%r12) # store size of ramdisk
ltr %r2,%r2
bnz .Lrdcont
st %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # no ramdisk found
.Lrdcont:
- l %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12)
+ l %r2,.Linitrd
clc 0(3,%r2),.L_hdr # skip HDRx and EOFx
bz .Lagain2
l %r1,.Lstartup
br %r1
+.Linitrd:.long _end + 0x400000 # default address of initrd
.Lparm: .long PARMAREA
.Lstartup: .long startup
.Lcvtab:.long _ebcasc # ebcdic to ascii table
.byte 0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7
.byte 0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff
-.macro GET_IPL_DEVICE
-.Lget_ipl_device:
- l %r1,0xb8 # get sid
- sll %r1,15 # test if subchannel is enabled
- srl %r1,31
- ltr %r1,%r1
- bz 2f-.LPG1(%r13) # subchannel disabled
- l %r1,0xb8
- la %r5,.Lipl_schib-.LPG1(%r13)
- stsch 0(%r5) # get schib of subchannel
- bnz 2f-.LPG1(%r13) # schib not available
- tm 5(%r5),0x01 # devno valid?
- bno 2f-.LPG1(%r13)
- la %r6,ipl_parameter_flags-.LPG1(%r13)
- oi 3(%r6),0x01 # set flag
- la %r2,ipl_devno-.LPG1(%r13)
- mvc 0(2,%r2),6(%r5) # store devno
- tm 4(%r5),0x80 # qdio capable device?
- bno 2f-.LPG1(%r13)
- oi 3(%r6),0x02 # set flag
-
- # copy ipl parameters
-
- lhi %r0,4096
- l %r2,20(%r0) # get address of parameter list
- lhi %r3,IPL_PARMBLOCK_ORIGIN
- st %r3,20(%r0)
- lhi %r4,1
- cr %r2,%r3 # start parameters < destination ?
- jl 0f
- lhi %r1,1 # copy direction is upwards
- j 1f
-0: lhi %r1,-1 # copy direction is downwards
- ar %r2,%r0
- ar %r3,%r0
- ar %r2,%r1
- ar %r3,%r1
-1: mvc 0(1,%r3),0(%r2) # finally copy ipl parameters
- ar %r3,%r1
- ar %r2,%r1
- sr %r0,%r4
- jne 1b
- b 2f-.LPG1(%r13)
-
- .align 4
-.Lipl_schib:
- .rept 13
- .long 0
- .endr
-
- .globl ipl_parameter_flags
-ipl_parameter_flags:
- .long 0
- .globl ipl_devno
-ipl_devno:
- .word 0
-2:
-.endm
-
#ifdef CONFIG_64BIT
#include "head64.S"
#else
#
.org PARMAREA
.long 0,0 # IPL_DEVICE
- .long 0,RAMDISK_ORIGIN # INITRD_START
- .long 0,RAMDISK_SIZE # INITRD_SIZE
+ .long 0,0 # INITRD_START
+ .long 0,0 # INITRD_SIZE
.org COMMAND_LINE
.byte "root=/dev/ram0 ro"
startup_continue:
basr %r13,0 # get base
-.LPG1: GET_IPL_DEVICE
+.LPG1: mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0)
lctl %c0,%c15,.Lctl-.LPG1(%r13) # load control registers
l %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area
# move IPL device to lowcore
mvc __LC_IPLDEV(4),IPL_DEVICE-PARMAREA(%r12)
+#
+# Setup stack
+#
+ l %r15,.Linittu-.LPG1(%r13)
+ mvc __LC_CURRENT(4),__TI_task(%r15)
+ ahi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union+THREAD_SIZE
+ st %r15,__LC_KERNEL_STACK # set end of kernel stack
+ ahi %r15,-96
+ xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain
+ l %r14,.Lipl_save_parameters-.LPG1(%r13)
+ basr %r14,%r14
#
# clear bss memory
#
b .Lfchunk-.LPG1(%r13)
.align 4
+.Lipl_save_parameters:
+ .long ipl_save_parameters
+.Linittu:
+ .long init_thread_union
.Lpmask:
.byte 0
.align 8
.Lbss_end: .long _end
.Lparmaddr: .long PARMAREA
.Lsccbaddr: .long .Lsccb
+
+ .globl ipl_schib
+ipl_schib:
+ .rept 13
+ .long 0
+ .endr
+
+ .globl ipl_flags
+ipl_flags:
+ .long 0
+ .globl ipl_devno
+ipl_devno:
+ .word 0
+
.org 0x12000
+.globl s390_readinfo_sccb
+s390_readinfo_sccb:
.Lsccb:
.hword 0x1000 # length, one page
.byte 0x00,0x00,0x00
.globl _stext
_stext: basr %r13,0 # get base
.LPG3:
-#
-# Setup stack
-#
- l %r15,.Linittu-.LPG3(%r13)
- mvc __LC_CURRENT(4),__TI_task(%r15)
- ahi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union+THREAD_SIZE
- st %r15,__LC_KERNEL_STACK # set end of kernel stack
- ahi %r15,-96
- xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain
-
# check control registers
stctl %c0,%c15,0(%r15)
oi 2(%r15),0x40 # enable sigp emergency signal
#
.align 8
.Ldw: .long 0x000a0000,0x00000000
-.Linittu:.long init_thread_union
.Lstart:.long start_kernel
.Laregs:.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
#
.org PARMAREA
.quad 0 # IPL_DEVICE
- .quad RAMDISK_ORIGIN # INITRD_START
- .quad RAMDISK_SIZE # INITRD_SIZE
+ .quad 0 # INITRD_START
+ .quad 0 # INITRD_SIZE
.org COMMAND_LINE
.byte "root=/dev/ram0 ro"
basr %r13,0 # get base
.LPG1: sll %r13,1 # remove high order bit
srl %r13,1
- GET_IPL_DEVICE
lhi %r1,1 # mode 1 = esame
+ mvi __LC_AR_MODE_ID,1 # set esame flag
slr %r0,%r0 # set cpuid to zero
sigp %r1,%r0,0x12 # switch to esame mode
sam64 # switch to 64 bit mode
lg %r12,.Lparmaddr-.LPG1(%r13)# pointer to parameter area
# move IPL device to lowcore
mvc __LC_IPLDEV(4),IPL_DEVICE+4-PARMAREA(%r12)
+#
+# Setup stack
+#
+ larl %r15,init_thread_union
+ lg %r14,__TI_task(%r15) # cache current in lowcore
+ stg %r14,__LC_CURRENT
+ aghi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union + THREAD_SIZE
+ stg %r15,__LC_KERNEL_STACK # set end of kernel stack
+ aghi %r15,-160
+ xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain
+ brasl %r14,ipl_save_parameters
#
# clear bss memory
#
oi 7(%r12),0x80 # set IDTE flag
0:
+#
+# find out if we have the MVCOS instruction
+#
+ la %r1,0f-.LPG1(%r13) # set program check address
+ stg %r1,__LC_PGM_NEW_PSW+8
+ .short 0xc800 # mvcos 0(%r0),0(%r0),%r0
+ .short 0x0000
+ .short 0x0000
+0: tm 0x8f,0x13 # special-operation exception?
+ bno 1f-.LPG1(%r13) # if yes, MVCOS is present
+ oi 6(%r12),2 # set MVCOS flag
+1:
+
lpswe .Lentry-.LPG1(13) # jump to _stext in primary-space,
# virtual and never return ...
.align 16
.Lparmaddr:
.quad PARMAREA
+ .globl ipl_schib
+ipl_schib:
+ .rept 13
+ .long 0
+ .endr
+
+ .globl ipl_flags
+ipl_flags:
+ .long 0
+ .globl ipl_devno
+ipl_devno:
+ .word 0
+
.org 0x12000
+.globl s390_readinfo_sccb
+s390_readinfo_sccb:
.Lsccb:
.hword 0x1000 # length, one page
.byte 0x00,0x00,0x00
.globl _stext
_stext: basr %r13,0 # get base
.LPG3:
-#
-# Setup stack
-#
- larl %r15,init_thread_union
- lg %r14,__TI_task(%r15) # cache current in lowcore
- stg %r14,__LC_CURRENT
- aghi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union + THREAD_SIZE
- stg %r15,__LC_KERNEL_STACK # set end of kernel stack
- aghi %r15,-160
- xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain
-
# check control registers
stctg %c0,%c15,0(%r15)
oi 6(%r15),0x40 # enable sigp emergency signal
oi 4(%r15),0x10 # switch on low address proctection
lctlg %c0,%c15,0(%r15)
-#
lam 0,15,.Laregs-.LPG3(%r13) # load access regs needed by uaccess
brasl %r14,start_kernel # go to C code
#
#
basr %r13,0
lpswe .Ldw-.(%r13) # load disabled wait psw
-#
+
.align 8
.Ldw: .quad 0x0002000180000000,0x0000000000000000
.Laregs: .long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
--- /dev/null
+/*
+ * arch/s390/kernel/ipl.c
+ * ipl/reipl/dump support for Linux on s390.
+ *
+ * Copyright (C) IBM Corp. 2005,2006
+ * Author(s): Michael Holzheu <holzheu@de.ibm.com>
+ * Heiko Carstens <heiko.carstens@de.ibm.com>
+ * Volker Sameske <sameske@de.ibm.com>
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/reboot.h>
+#include <asm/smp.h>
+#include <asm/setup.h>
+#include <asm/cpcmd.h>
+#include <asm/cio.h>
+
+#define IPL_PARM_BLOCK_VERSION 0
+
+enum ipl_type {
+ IPL_TYPE_NONE = 1,
+ IPL_TYPE_UNKNOWN = 2,
+ IPL_TYPE_CCW = 4,
+ IPL_TYPE_FCP = 8,
+};
+
+#define IPL_NONE_STR "none"
+#define IPL_UNKNOWN_STR "unknown"
+#define IPL_CCW_STR "ccw"
+#define IPL_FCP_STR "fcp"
+
+static char *ipl_type_str(enum ipl_type type)
+{
+ switch (type) {
+ case IPL_TYPE_NONE:
+ return IPL_NONE_STR;
+ case IPL_TYPE_CCW:
+ return IPL_CCW_STR;
+ case IPL_TYPE_FCP:
+ return IPL_FCP_STR;
+ case IPL_TYPE_UNKNOWN:
+ default:
+ return IPL_UNKNOWN_STR;
+ }
+}
+
+enum ipl_method {
+ IPL_METHOD_NONE,
+ IPL_METHOD_CCW_CIO,
+ IPL_METHOD_CCW_DIAG,
+ IPL_METHOD_CCW_VM,
+ IPL_METHOD_FCP_RO_DIAG,
+ IPL_METHOD_FCP_RW_DIAG,
+ IPL_METHOD_FCP_RO_VM,
+};
+
+enum shutdown_action {
+ SHUTDOWN_REIPL,
+ SHUTDOWN_DUMP,
+ SHUTDOWN_STOP,
+};
+
+#define SHUTDOWN_REIPL_STR "reipl"
+#define SHUTDOWN_DUMP_STR "dump"
+#define SHUTDOWN_STOP_STR "stop"
+
+static char *shutdown_action_str(enum shutdown_action action)
+{
+ switch (action) {
+ case SHUTDOWN_REIPL:
+ return SHUTDOWN_REIPL_STR;
+ case SHUTDOWN_DUMP:
+ return SHUTDOWN_DUMP_STR;
+ case SHUTDOWN_STOP:
+ return SHUTDOWN_STOP_STR;
+ default:
+ BUG();
+ }
+}
+
+enum diag308_subcode {
+ DIAG308_IPL = 3,
+ DIAG308_DUMP = 4,
+ DIAG308_SET = 5,
+ DIAG308_STORE = 6,
+};
+
+enum diag308_ipl_type {
+ DIAG308_IPL_TYPE_FCP = 0,
+ DIAG308_IPL_TYPE_CCW = 2,
+};
+
+enum diag308_opt {
+ DIAG308_IPL_OPT_IPL = 0x10,
+ DIAG308_IPL_OPT_DUMP = 0x20,
+};
+
+enum diag308_rc {
+ DIAG308_RC_OK = 1,
+};
+
+static int diag308_set_works = 0;
+
+static int reipl_capabilities = IPL_TYPE_UNKNOWN;
+static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN;
+static enum ipl_method reipl_method = IPL_METHOD_NONE;
+static struct ipl_parameter_block *reipl_block_fcp;
+static struct ipl_parameter_block *reipl_block_ccw;
+
+static int dump_capabilities = IPL_TYPE_NONE;
+static enum ipl_type dump_type = IPL_TYPE_NONE;
+static enum ipl_method dump_method = IPL_METHOD_NONE;
+static struct ipl_parameter_block *dump_block_fcp;
+static struct ipl_parameter_block *dump_block_ccw;
+
+static enum shutdown_action on_panic_action = SHUTDOWN_STOP;
+
+static int diag308(unsigned long subcode, void *addr)
+{
+ register unsigned long _addr asm("0") = (unsigned long)addr;
+ register unsigned long _rc asm("1") = 0;
+
+ asm volatile (
+ " diag %0,%2,0x308\n"
+ "0: \n"
+ ".section __ex_table,\"a\"\n"
+#ifdef CONFIG_64BIT
+ " .align 8\n"
+ " .quad 0b, 0b\n"
+#else
+ " .align 4\n"
+ " .long 0b, 0b\n"
+#endif
+ ".previous\n"
+ : "+d" (_addr), "+d" (_rc)
+ : "d" (subcode) : "cc", "memory" );
+
+ return _rc;
+}
+
+/* SYSFS */
+
+#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \
+static ssize_t sys_##_prefix##_##_name##_show(struct subsystem *subsys, \
+ char *page) \
+{ \
+ return sprintf(page, _format, _value); \
+} \
+static struct subsys_attribute sys_##_prefix##_##_name##_attr = \
+ __ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL);
+
+#define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \
+static ssize_t sys_##_prefix##_##_name##_show(struct subsystem *subsys, \
+ char *page) \
+{ \
+ return sprintf(page, _fmt_out, \
+ (unsigned long long) _value); \
+} \
+static ssize_t sys_##_prefix##_##_name##_store(struct subsystem *subsys,\
+ const char *buf, size_t len) \
+{ \
+ unsigned long long value; \
+ if (sscanf(buf, _fmt_in, &value) != 1) \
+ return -EINVAL; \
+ _value = value; \
+ return len; \
+} \
+static struct subsys_attribute sys_##_prefix##_##_name##_attr = \
+ __ATTR(_name,(S_IRUGO | S_IWUSR), \
+ sys_##_prefix##_##_name##_show, \
+ sys_##_prefix##_##_name##_store);
+
+static void make_attrs_ro(struct attribute **attrs)
+{
+ while (*attrs) {
+ (*attrs)->mode = S_IRUGO;
+ attrs++;
+ }
+}
+
+/*
+ * ipl section
+ */
+
+static enum ipl_type ipl_get_type(void)
+{
+ struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
+
+ if (!(ipl_flags & IPL_DEVNO_VALID))
+ return IPL_TYPE_UNKNOWN;
+ if (!(ipl_flags & IPL_PARMBLOCK_VALID))
+ return IPL_TYPE_CCW;
+ if (ipl->hdr.version > IPL_MAX_SUPPORTED_VERSION)
+ return IPL_TYPE_UNKNOWN;
+ if (ipl->hdr.pbt != DIAG308_IPL_TYPE_FCP)
+ return IPL_TYPE_UNKNOWN;
+ return IPL_TYPE_FCP;
+}
+
+static ssize_t ipl_type_show(struct subsystem *subsys, char *page)
+{
+ return sprintf(page, "%s\n", ipl_type_str(ipl_get_type()));
+}
+
+static struct subsys_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type);
+
+static ssize_t sys_ipl_device_show(struct subsystem *subsys, char *page)
+{
+ struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
+
+ switch (ipl_get_type()) {
+ case IPL_TYPE_CCW:
+ return sprintf(page, "0.0.%04x\n", ipl_devno);
+ case IPL_TYPE_FCP:
+ return sprintf(page, "0.0.%04x\n", ipl->ipl_info.fcp.devno);
+ default:
+ return 0;
+ }
+}
+
+static struct subsys_attribute sys_ipl_device_attr =
+ __ATTR(device, S_IRUGO, sys_ipl_device_show, NULL);
+
+static ssize_t ipl_parameter_read(struct kobject *kobj, char *buf, loff_t off,
+ size_t count)
+{
+ unsigned int size = IPL_PARMBLOCK_SIZE;
+
+ if (off > size)
+ return 0;
+ if (off + count > size)
+ count = size - off;
+ memcpy(buf, (void *)IPL_PARMBLOCK_START + off, count);
+ return count;
+}
+
+static struct bin_attribute ipl_parameter_attr = {
+ .attr = {
+ .name = "binary_parameter",
+ .mode = S_IRUGO,
+ .owner = THIS_MODULE,
+ },
+ .size = PAGE_SIZE,
+ .read = &ipl_parameter_read,
+};
+
+static ssize_t ipl_scp_data_read(struct kobject *kobj, char *buf, loff_t off,
+ size_t count)
+{
+ unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len;
+ void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data;
+
+ if (off > size)
+ return 0;
+ if (off + count > size)
+ count = size - off;
+ memcpy(buf, scp_data + off, count);
+ return count;
+}
+
+static struct bin_attribute ipl_scp_data_attr = {
+ .attr = {
+ .name = "scp_data",
+ .mode = S_IRUGO,
+ .owner = THIS_MODULE,
+ },
+ .size = PAGE_SIZE,
+ .read = &ipl_scp_data_read,
+};
+
+/* FCP ipl device attributes */
+
+DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", (unsigned long long)
+ IPL_PARMBLOCK_START->ipl_info.fcp.wwpn);
+DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", (unsigned long long)
+ IPL_PARMBLOCK_START->ipl_info.fcp.lun);
+DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", (unsigned long long)
+ IPL_PARMBLOCK_START->ipl_info.fcp.bootprog);
+DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", (unsigned long long)
+ IPL_PARMBLOCK_START->ipl_info.fcp.br_lba);
+
+static struct attribute *ipl_fcp_attrs[] = {
+ &sys_ipl_type_attr.attr,
+ &sys_ipl_device_attr.attr,
+ &sys_ipl_fcp_wwpn_attr.attr,
+ &sys_ipl_fcp_lun_attr.attr,
+ &sys_ipl_fcp_bootprog_attr.attr,
+ &sys_ipl_fcp_br_lba_attr.attr,
+ NULL,
+};
+
+static struct attribute_group ipl_fcp_attr_group = {
+ .attrs = ipl_fcp_attrs,
+};
+
+/* CCW ipl device attributes */
+
+static struct attribute *ipl_ccw_attrs[] = {
+ &sys_ipl_type_attr.attr,
+ &sys_ipl_device_attr.attr,
+ NULL,
+};
+
+static struct attribute_group ipl_ccw_attr_group = {
+ .attrs = ipl_ccw_attrs,
+};
+
+/* UNKNOWN ipl device attributes */
+
+static struct attribute *ipl_unknown_attrs[] = {
+ &sys_ipl_type_attr.attr,
+ NULL,
+};
+
+static struct attribute_group ipl_unknown_attr_group = {
+ .attrs = ipl_unknown_attrs,
+};
+
+static decl_subsys(ipl, NULL, NULL);
+
+/*
+ * reipl section
+ */
+
+/* FCP reipl device attributes */
+
+DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%016llx\n",
+ reipl_block_fcp->ipl_info.fcp.wwpn);
+DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%016llx\n",
+ reipl_block_fcp->ipl_info.fcp.lun);
+DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n",
+ reipl_block_fcp->ipl_info.fcp.bootprog);
+DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n",
+ reipl_block_fcp->ipl_info.fcp.br_lba);
+DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
+ reipl_block_fcp->ipl_info.fcp.devno);
+
+static struct attribute *reipl_fcp_attrs[] = {
+ &sys_reipl_fcp_device_attr.attr,
+ &sys_reipl_fcp_wwpn_attr.attr,
+ &sys_reipl_fcp_lun_attr.attr,
+ &sys_reipl_fcp_bootprog_attr.attr,
+ &sys_reipl_fcp_br_lba_attr.attr,
+ NULL,
+};
+
+static struct attribute_group reipl_fcp_attr_group = {
+ .name = IPL_FCP_STR,
+ .attrs = reipl_fcp_attrs,
+};
+
+/* CCW reipl device attributes */
+
+DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
+ reipl_block_ccw->ipl_info.ccw.devno);
+
+static struct attribute *reipl_ccw_attrs[] = {
+ &sys_reipl_ccw_device_attr.attr,
+ NULL,
+};
+
+static struct attribute_group reipl_ccw_attr_group = {
+ .name = IPL_CCW_STR,
+ .attrs = reipl_ccw_attrs,
+};
+
+/* reipl type */
+
+static int reipl_set_type(enum ipl_type type)
+{
+ if (!(reipl_capabilities & type))
+ return -EINVAL;
+
+ switch(type) {
+ case IPL_TYPE_CCW:
+ if (MACHINE_IS_VM)
+ reipl_method = IPL_METHOD_CCW_VM;
+ else
+ reipl_method = IPL_METHOD_CCW_CIO;
+ break;
+ case IPL_TYPE_FCP:
+ if (diag308_set_works)
+ reipl_method = IPL_METHOD_FCP_RW_DIAG;
+ else if (MACHINE_IS_VM)
+ reipl_method = IPL_METHOD_FCP_RO_VM;
+ else
+ reipl_method = IPL_METHOD_FCP_RO_DIAG;
+ break;
+ default:
+ reipl_method = IPL_METHOD_NONE;
+ }
+ reipl_type = type;
+ return 0;
+}
+
+static ssize_t reipl_type_show(struct subsystem *subsys, char *page)
+{
+ return sprintf(page, "%s\n", ipl_type_str(reipl_type));
+}
+
+static ssize_t reipl_type_store(struct subsystem *subsys, const char *buf,
+ size_t len)
+{
+ int rc = -EINVAL;
+
+ if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0)
+ rc = reipl_set_type(IPL_TYPE_CCW);
+ else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0)
+ rc = reipl_set_type(IPL_TYPE_FCP);
+ return (rc != 0) ? rc : len;
+}
+
+static struct subsys_attribute reipl_type_attr =
+ __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store);
+
+static decl_subsys(reipl, NULL, NULL);
+
+/*
+ * dump section
+ */
+
+/* FCP dump device attributes */
+
+DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%016llx\n",
+ dump_block_fcp->ipl_info.fcp.wwpn);
+DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%016llx\n",
+ dump_block_fcp->ipl_info.fcp.lun);
+DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n",
+ dump_block_fcp->ipl_info.fcp.bootprog);
+DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n",
+ dump_block_fcp->ipl_info.fcp.br_lba);
+DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
+ dump_block_fcp->ipl_info.fcp.devno);
+
+static struct attribute *dump_fcp_attrs[] = {
+ &sys_dump_fcp_device_attr.attr,
+ &sys_dump_fcp_wwpn_attr.attr,
+ &sys_dump_fcp_lun_attr.attr,
+ &sys_dump_fcp_bootprog_attr.attr,
+ &sys_dump_fcp_br_lba_attr.attr,
+ NULL,
+};
+
+static struct attribute_group dump_fcp_attr_group = {
+ .name = IPL_FCP_STR,
+ .attrs = dump_fcp_attrs,
+};
+
+/* CCW dump device attributes */
+
+DEFINE_IPL_ATTR_RW(dump_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
+ dump_block_ccw->ipl_info.ccw.devno);
+
+static struct attribute *dump_ccw_attrs[] = {
+ &sys_dump_ccw_device_attr.attr,
+ NULL,
+};
+
+static struct attribute_group dump_ccw_attr_group = {
+ .name = IPL_CCW_STR,
+ .attrs = dump_ccw_attrs,
+};
+
+/* dump type */
+
+static int dump_set_type(enum ipl_type type)
+{
+ if (!(dump_capabilities & type))
+ return -EINVAL;
+ switch(type) {
+ case IPL_TYPE_CCW:
+ if (MACHINE_IS_VM)
+ dump_method = IPL_METHOD_CCW_VM;
+ else
+ dump_method = IPL_METHOD_CCW_CIO;
+ break;
+ case IPL_TYPE_FCP:
+ dump_method = IPL_METHOD_FCP_RW_DIAG;
+ break;
+ default:
+ dump_method = IPL_METHOD_NONE;
+ }
+ dump_type = type;
+ return 0;
+}
+
+static ssize_t dump_type_show(struct subsystem *subsys, char *page)
+{
+ return sprintf(page, "%s\n", ipl_type_str(dump_type));
+}
+
+static ssize_t dump_type_store(struct subsystem *subsys, const char *buf,
+ size_t len)
+{
+ int rc = -EINVAL;
+
+ if (strncmp(buf, IPL_NONE_STR, strlen(IPL_NONE_STR)) == 0)
+ rc = dump_set_type(IPL_TYPE_NONE);
+ else if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0)
+ rc = dump_set_type(IPL_TYPE_CCW);
+ else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0)
+ rc = dump_set_type(IPL_TYPE_FCP);
+ return (rc != 0) ? rc : len;
+}
+
+static struct subsys_attribute dump_type_attr =
+ __ATTR(dump_type, 0644, dump_type_show, dump_type_store);
+
+static decl_subsys(dump, NULL, NULL);
+
+#ifdef CONFIG_SMP
+static void dump_smp_stop_all(void)
+{
+ int cpu;
+ preempt_disable();
+ for_each_online_cpu(cpu) {
+ if (cpu == smp_processor_id())
+ continue;
+ while (signal_processor(cpu, sigp_stop) == sigp_busy)
+ udelay(10);
+ }
+ preempt_enable();
+}
+#else
+#define dump_smp_stop_all() do { } while (0)
+#endif
+
+/*
+ * Shutdown actions section
+ */
+
+static decl_subsys(shutdown_actions, NULL, NULL);
+
+/* on panic */
+
+static ssize_t on_panic_show(struct subsystem *subsys, char *page)
+{
+ return sprintf(page, "%s\n", shutdown_action_str(on_panic_action));
+}
+
+static ssize_t on_panic_store(struct subsystem *subsys, const char *buf,
+ size_t len)
+{
+ if (strncmp(buf, SHUTDOWN_REIPL_STR, strlen(SHUTDOWN_REIPL_STR)) == 0)
+ on_panic_action = SHUTDOWN_REIPL;
+ else if (strncmp(buf, SHUTDOWN_DUMP_STR,
+ strlen(SHUTDOWN_DUMP_STR)) == 0)
+ on_panic_action = SHUTDOWN_DUMP;
+ else if (strncmp(buf, SHUTDOWN_STOP_STR,
+ strlen(SHUTDOWN_STOP_STR)) == 0)
+ on_panic_action = SHUTDOWN_STOP;
+ else
+ return -EINVAL;
+
+ return len;
+}
+
+static struct subsys_attribute on_panic_attr =
+ __ATTR(on_panic, 0644, on_panic_show, on_panic_store);
+
+static void print_fcp_block(struct ipl_parameter_block *fcp_block)
+{
+ printk(KERN_EMERG "wwpn: %016llx\n",
+ (unsigned long long)fcp_block->ipl_info.fcp.wwpn);
+ printk(KERN_EMERG "lun: %016llx\n",
+ (unsigned long long)fcp_block->ipl_info.fcp.lun);
+ printk(KERN_EMERG "bootprog: %lld\n",
+ (unsigned long long)fcp_block->ipl_info.fcp.bootprog);
+ printk(KERN_EMERG "br_lba: %lld\n",
+ (unsigned long long)fcp_block->ipl_info.fcp.br_lba);
+ printk(KERN_EMERG "device: %llx\n",
+ (unsigned long long)fcp_block->ipl_info.fcp.devno);
+ printk(KERN_EMERG "opt: %x\n", fcp_block->ipl_info.fcp.opt);
+}
+
+void do_reipl(void)
+{
+ struct ccw_dev_id devid;
+ static char buf[100];
+
+ switch (reipl_type) {
+ case IPL_TYPE_CCW:
+ printk(KERN_EMERG "reboot on ccw device: 0.0.%04x\n",
+ reipl_block_ccw->ipl_info.ccw.devno);
+ break;
+ case IPL_TYPE_FCP:
+ printk(KERN_EMERG "reboot on fcp device:\n");
+ print_fcp_block(reipl_block_fcp);
+ break;
+ default:
+ break;
+ }
+
+ switch (reipl_method) {
+ case IPL_METHOD_CCW_CIO:
+ devid.devno = reipl_block_ccw->ipl_info.ccw.devno;
+ devid.ssid = 0;
+ reipl_ccw_dev(&devid);
+ break;
+ case IPL_METHOD_CCW_VM:
+ sprintf(buf, "IPL %X", reipl_block_ccw->ipl_info.ccw.devno);
+ cpcmd(buf, NULL, 0, NULL);
+ break;
+ case IPL_METHOD_CCW_DIAG:
+ diag308(DIAG308_SET, reipl_block_ccw);
+ diag308(DIAG308_IPL, NULL);
+ break;
+ case IPL_METHOD_FCP_RW_DIAG:
+ diag308(DIAG308_SET, reipl_block_fcp);
+ diag308(DIAG308_IPL, NULL);
+ break;
+ case IPL_METHOD_FCP_RO_DIAG:
+ diag308(DIAG308_IPL, NULL);
+ break;
+ case IPL_METHOD_FCP_RO_VM:
+ cpcmd("IPL", NULL, 0, NULL);
+ break;
+ case IPL_METHOD_NONE:
+ default:
+ if (MACHINE_IS_VM)
+ cpcmd("IPL", NULL, 0, NULL);
+ diag308(DIAG308_IPL, NULL);
+ break;
+ }
+ panic("reipl failed!\n");
+}
+
+static void do_dump(void)
+{
+ struct ccw_dev_id devid;
+ static char buf[100];
+
+ switch (dump_type) {
+ case IPL_TYPE_CCW:
+ printk(KERN_EMERG "Automatic dump on ccw device: 0.0.%04x\n",
+ dump_block_ccw->ipl_info.ccw.devno);
+ break;
+ case IPL_TYPE_FCP:
+ printk(KERN_EMERG "Automatic dump on fcp device:\n");
+ print_fcp_block(dump_block_fcp);
+ break;
+ default:
+ return;
+ }
+
+ switch (dump_method) {
+ case IPL_METHOD_CCW_CIO:
+ dump_smp_stop_all();
+ devid.devno = dump_block_ccw->ipl_info.ccw.devno;
+ devid.ssid = 0;
+ reipl_ccw_dev(&devid);
+ break;
+ case IPL_METHOD_CCW_VM:
+ dump_smp_stop_all();
+ sprintf(buf, "STORE STATUS");
+ cpcmd(buf, NULL, 0, NULL);
+ sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno);
+ cpcmd(buf, NULL, 0, NULL);
+ break;
+ case IPL_METHOD_CCW_DIAG:
+ diag308(DIAG308_SET, dump_block_ccw);
+ diag308(DIAG308_DUMP, NULL);
+ break;
+ case IPL_METHOD_FCP_RW_DIAG:
+ diag308(DIAG308_SET, dump_block_fcp);
+ diag308(DIAG308_DUMP, NULL);
+ break;
+ case IPL_METHOD_NONE:
+ default:
+ return;
+ }
+ printk(KERN_EMERG "Dump failed!\n");
+}
+
+/* init functions */
+
+static int __init ipl_register_fcp_files(void)
+{
+ int rc;
+
+ rc = sysfs_create_group(&ipl_subsys.kset.kobj,
+ &ipl_fcp_attr_group);
+ if (rc)
+ goto out;
+ rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
+ &ipl_parameter_attr);
+ if (rc)
+ goto out_ipl_parm;
+ rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
+ &ipl_scp_data_attr);
+ if (!rc)
+ goto out;
+
+ sysfs_remove_bin_file(&ipl_subsys.kset.kobj, &ipl_parameter_attr);
+
+out_ipl_parm:
+ sysfs_remove_group(&ipl_subsys.kset.kobj, &ipl_fcp_attr_group);
+out:
+ return rc;
+}
+
+static int __init ipl_init(void)
+{
+ int rc;
+
+ rc = firmware_register(&ipl_subsys);
+ if (rc)
+ return rc;
+ switch (ipl_get_type()) {
+ case IPL_TYPE_CCW:
+ rc = sysfs_create_group(&ipl_subsys.kset.kobj,
+ &ipl_ccw_attr_group);
+ break;
+ case IPL_TYPE_FCP:
+ rc = ipl_register_fcp_files();
+ break;
+ default:
+ rc = sysfs_create_group(&ipl_subsys.kset.kobj,
+ &ipl_unknown_attr_group);
+ break;
+ }
+ if (rc)
+ firmware_unregister(&ipl_subsys);
+ return rc;
+}
+
+static void __init reipl_probe(void)
+{
+ void *buffer;
+
+ buffer = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!buffer)
+ return;
+ if (diag308(DIAG308_STORE, buffer) == DIAG308_RC_OK)
+ diag308_set_works = 1;
+ free_page((unsigned long)buffer);
+}
+
+static int __init reipl_ccw_init(void)
+{
+ int rc;
+
+ reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!reipl_block_ccw)
+ return -ENOMEM;
+ rc = sysfs_create_group(&reipl_subsys.kset.kobj, &reipl_ccw_attr_group);
+ if (rc) {
+ free_page((unsigned long)reipl_block_ccw);
+ return rc;
+ }
+ reipl_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN;
+ reipl_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
+ reipl_block_ccw->hdr.blk0_len = sizeof(reipl_block_ccw->ipl_info.ccw);
+ reipl_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
+ if (ipl_get_type() == IPL_TYPE_CCW)
+ reipl_block_ccw->ipl_info.ccw.devno = ipl_devno;
+ reipl_capabilities |= IPL_TYPE_CCW;
+ return 0;
+}
+
+static int __init reipl_fcp_init(void)
+{
+ int rc;
+
+ if ((!diag308_set_works) && (ipl_get_type() != IPL_TYPE_FCP))
+ return 0;
+ if ((!diag308_set_works) && (ipl_get_type() == IPL_TYPE_FCP))
+ make_attrs_ro(reipl_fcp_attrs);
+
+ reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!reipl_block_fcp)
+ return -ENOMEM;
+ rc = sysfs_create_group(&reipl_subsys.kset.kobj, &reipl_fcp_attr_group);
+ if (rc) {
+ free_page((unsigned long)reipl_block_fcp);
+ return rc;
+ }
+ if (ipl_get_type() == IPL_TYPE_FCP) {
+ memcpy(reipl_block_fcp, IPL_PARMBLOCK_START, PAGE_SIZE);
+ } else {
+ reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN;
+ reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
+ reipl_block_fcp->hdr.blk0_len =
+ sizeof(reipl_block_fcp->ipl_info.fcp);
+ reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP;
+ reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL;
+ }
+ reipl_capabilities |= IPL_TYPE_FCP;
+ return 0;
+}
+
+static int __init reipl_init(void)
+{
+ int rc;
+
+ rc = firmware_register(&reipl_subsys);
+ if (rc)
+ return rc;
+ rc = subsys_create_file(&reipl_subsys, &reipl_type_attr);
+ if (rc) {
+ firmware_unregister(&reipl_subsys);
+ return rc;
+ }
+ rc = reipl_ccw_init();
+ if (rc)
+ return rc;
+ rc = reipl_fcp_init();
+ if (rc)
+ return rc;
+ rc = reipl_set_type(ipl_get_type());
+ if (rc)
+ return rc;
+ return 0;
+}
+
+static int __init dump_ccw_init(void)
+{
+ int rc;
+
+ dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!dump_block_ccw)
+ return -ENOMEM;
+ rc = sysfs_create_group(&dump_subsys.kset.kobj, &dump_ccw_attr_group);
+ if (rc) {
+ free_page((unsigned long)dump_block_ccw);
+ return rc;
+ }
+ dump_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN;
+ dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
+ dump_block_ccw->hdr.blk0_len = sizeof(reipl_block_ccw->ipl_info.ccw);
+ dump_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
+ dump_capabilities |= IPL_TYPE_CCW;
+ return 0;
+}
+
+extern char s390_readinfo_sccb[];
+
+static int __init dump_fcp_init(void)
+{
+ int rc;
+
+ if(!(s390_readinfo_sccb[91] & 0x2))
+ return 0; /* LDIPL DUMP is not installed */
+ if (!diag308_set_works)
+ return 0;
+ dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!dump_block_fcp)
+ return -ENOMEM;
+ rc = sysfs_create_group(&dump_subsys.kset.kobj, &dump_fcp_attr_group);
+ if (rc) {
+ free_page((unsigned long)dump_block_fcp);
+ return rc;
+ }
+ dump_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN;
+ dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
+ dump_block_fcp->hdr.blk0_len = sizeof(dump_block_fcp->ipl_info.fcp);
+ dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP;
+ dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP;
+ dump_capabilities |= IPL_TYPE_FCP;
+ return 0;
+}
+
+#define SHUTDOWN_ON_PANIC_PRIO 0
+
+static int shutdown_on_panic_notify(struct notifier_block *self,
+ unsigned long event, void *data)
+{
+ if (on_panic_action == SHUTDOWN_DUMP)
+ do_dump();
+ else if (on_panic_action == SHUTDOWN_REIPL)
+ do_reipl();
+ return NOTIFY_OK;
+}
+
+static struct notifier_block shutdown_on_panic_nb = {
+ .notifier_call = shutdown_on_panic_notify,
+ .priority = SHUTDOWN_ON_PANIC_PRIO
+};
+
+static int __init dump_init(void)
+{
+ int rc;
+
+ rc = firmware_register(&dump_subsys);
+ if (rc)
+ return rc;
+ rc = subsys_create_file(&dump_subsys, &dump_type_attr);
+ if (rc) {
+ firmware_unregister(&dump_subsys);
+ return rc;
+ }
+ rc = dump_ccw_init();
+ if (rc)
+ return rc;
+ rc = dump_fcp_init();
+ if (rc)
+ return rc;
+ dump_set_type(IPL_TYPE_NONE);
+ return 0;
+}
+
+static int __init shutdown_actions_init(void)
+{
+ int rc;
+
+ rc = firmware_register(&shutdown_actions_subsys);
+ if (rc)
+ return rc;
+ rc = subsys_create_file(&shutdown_actions_subsys, &on_panic_attr);
+ if (rc) {
+ firmware_unregister(&shutdown_actions_subsys);
+ return rc;
+ }
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &shutdown_on_panic_nb);
+ return 0;
+}
+
+static int __init s390_ipl_init(void)
+{
+ int rc;
+
+ reipl_probe();
+ rc = ipl_init();
+ if (rc)
+ return rc;
+ rc = reipl_init();
+ if (rc)
+ return rc;
+ rc = dump_init();
+ if (rc)
+ return rc;
+ rc = shutdown_actions_init();
+ if (rc)
+ return rc;
+ return 0;
+}
+
+__initcall(s390_ipl_init);
--- /dev/null
+/*
+ * Kernel Probes (KProbes)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) IBM Corporation, 2002, 2006
+ *
+ * s390 port, used ppc64 as template. Mike Grundy <grundym@us.ibm.com>
+ */
+
+#include <linux/config.h>
+#include <linux/kprobes.h>
+#include <linux/ptrace.h>
+#include <linux/preempt.h>
+#include <linux/stop_machine.h>
+#include <asm/cacheflush.h>
+#include <asm/kdebug.h>
+#include <asm/sections.h>
+#include <asm/uaccess.h>
+#include <linux/module.h>
+
+DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
+DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
+
+int __kprobes arch_prepare_kprobe(struct kprobe *p)
+{
+ /* Make sure the probe isn't going on a difficult instruction */
+ if (is_prohibited_opcode((kprobe_opcode_t *) p->addr))
+ return -EINVAL;
+
+ if ((unsigned long)p->addr & 0x01) {
+ printk("Attempt to register kprobe at an unaligned address\n");
+ return -EINVAL;
+ }
+
+ /* Use the get_insn_slot() facility for correctness */
+ if (!(p->ainsn.insn = get_insn_slot()))
+ return -ENOMEM;
+
+ memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
+
+ get_instruction_type(&p->ainsn);
+ p->opcode = *p->addr;
+ return 0;
+}
+
+int __kprobes is_prohibited_opcode(kprobe_opcode_t *instruction)
+{
+ switch (*(__u8 *) instruction) {
+ case 0x0c: /* bassm */
+ case 0x0b: /* bsm */
+ case 0x83: /* diag */
+ case 0x44: /* ex */
+ return -EINVAL;
+ }
+ switch (*(__u16 *) instruction) {
+ case 0x0101: /* pr */
+ case 0xb25a: /* bsa */
+ case 0xb240: /* bakr */
+ case 0xb258: /* bsg */
+ case 0xb218: /* pc */
+ case 0xb228: /* pt */
+ return -EINVAL;
+ }
+ return 0;
+}
+
+void __kprobes get_instruction_type(struct arch_specific_insn *ainsn)
+{
+ /* default fixup method */
+ ainsn->fixup = FIXUP_PSW_NORMAL;
+
+ /* save r1 operand */
+ ainsn->reg = (*ainsn->insn & 0xf0) >> 4;
+
+ /* save the instruction length (pop 5-5) in bytes */
+ switch (*(__u8 *) (ainsn->insn) >> 4) {
+ case 0:
+ ainsn->ilen = 2;
+ break;
+ case 1:
+ case 2:
+ ainsn->ilen = 4;
+ break;
+ case 3:
+ ainsn->ilen = 6;
+ break;
+ }
+
+ switch (*(__u8 *) ainsn->insn) {
+ case 0x05: /* balr */
+ case 0x0d: /* basr */
+ ainsn->fixup = FIXUP_RETURN_REGISTER;
+ /* if r2 = 0, no branch will be taken */
+ if ((*ainsn->insn & 0x0f) == 0)
+ ainsn->fixup |= FIXUP_BRANCH_NOT_TAKEN;
+ break;
+ case 0x06: /* bctr */
+ case 0x07: /* bcr */
+ ainsn->fixup = FIXUP_BRANCH_NOT_TAKEN;
+ break;
+ case 0x45: /* bal */
+ case 0x4d: /* bas */
+ ainsn->fixup = FIXUP_RETURN_REGISTER;
+ break;
+ case 0x47: /* bc */
+ case 0x46: /* bct */
+ case 0x86: /* bxh */
+ case 0x87: /* bxle */
+ ainsn->fixup = FIXUP_BRANCH_NOT_TAKEN;
+ break;
+ case 0x82: /* lpsw */
+ ainsn->fixup = FIXUP_NOT_REQUIRED;
+ break;
+ case 0xb2: /* lpswe */
+ if (*(((__u8 *) ainsn->insn) + 1) == 0xb2) {
+ ainsn->fixup = FIXUP_NOT_REQUIRED;
+ }
+ break;
+ case 0xa7: /* bras */
+ if ((*ainsn->insn & 0x0f) == 0x05) {
+ ainsn->fixup |= FIXUP_RETURN_REGISTER;
+ }
+ break;
+ case 0xc0:
+ if ((*ainsn->insn & 0x0f) == 0x00 /* larl */
+ || (*ainsn->insn & 0x0f) == 0x05) /* brasl */
+ ainsn->fixup |= FIXUP_RETURN_REGISTER;
+ break;
+ case 0xeb:
+ if (*(((__u8 *) ainsn->insn) + 5 ) == 0x44 || /* bxhg */
+ *(((__u8 *) ainsn->insn) + 5) == 0x45) {/* bxleg */
+ ainsn->fixup = FIXUP_BRANCH_NOT_TAKEN;
+ }
+ break;
+ case 0xe3: /* bctg */
+ if (*(((__u8 *) ainsn->insn) + 5) == 0x46) {
+ ainsn->fixup = FIXUP_BRANCH_NOT_TAKEN;
+ }
+ break;
+ }
+}
+
+static int __kprobes swap_instruction(void *aref)
+{
+ struct ins_replace_args *args = aref;
+ int err = -EFAULT;
+
+ asm volatile(
+ "0: mvc 0(2,%2),0(%3)\n"
+ "1: la %0,0\n"
+ "2:\n"
+ EX_TABLE(0b,2b)
+ : "+d" (err), "=m" (*args->ptr)
+ : "a" (args->ptr), "a" (&args->new), "m" (args->new));
+ return err;
+}
+
+void __kprobes arch_arm_kprobe(struct kprobe *p)
+{
+ struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+ unsigned long status = kcb->kprobe_status;
+ struct ins_replace_args args;
+
+ args.ptr = p->addr;
+ args.old = p->opcode;
+ args.new = BREAKPOINT_INSTRUCTION;
+
+ kcb->kprobe_status = KPROBE_SWAP_INST;
+ stop_machine_run(swap_instruction, &args, NR_CPUS);
+ kcb->kprobe_status = status;
+}
+
+void __kprobes arch_disarm_kprobe(struct kprobe *p)
+{
+ struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+ unsigned long status = kcb->kprobe_status;
+ struct ins_replace_args args;
+
+ args.ptr = p->addr;
+ args.old = BREAKPOINT_INSTRUCTION;
+ args.new = p->opcode;
+
+ kcb->kprobe_status = KPROBE_SWAP_INST;
+ stop_machine_run(swap_instruction, &args, NR_CPUS);
+ kcb->kprobe_status = status;
+}
+
+void __kprobes arch_remove_kprobe(struct kprobe *p)
+{
+ mutex_lock(&kprobe_mutex);
+ free_insn_slot(p->ainsn.insn);
+ mutex_unlock(&kprobe_mutex);
+}
+
+static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
+{
+ per_cr_bits kprobe_per_regs[1];
+
+ memset(kprobe_per_regs, 0, sizeof(per_cr_bits));
+ regs->psw.addr = (unsigned long)p->ainsn.insn | PSW_ADDR_AMODE;
+
+ /* Set up the per control reg info, will pass to lctl */
+ kprobe_per_regs[0].em_instruction_fetch = 1;
+ kprobe_per_regs[0].starting_addr = (unsigned long)p->ainsn.insn;
+ kprobe_per_regs[0].ending_addr = (unsigned long)p->ainsn.insn + 1;
+
+ /* Set the PER control regs, turns on single step for this address */
+ __ctl_load(kprobe_per_regs, 9, 11);
+ regs->psw.mask |= PSW_MASK_PER;
+ regs->psw.mask &= ~(PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK);
+}
+
+static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)
+{
+ kcb->prev_kprobe.kp = kprobe_running();
+ kcb->prev_kprobe.status = kcb->kprobe_status;
+ kcb->prev_kprobe.kprobe_saved_imask = kcb->kprobe_saved_imask;
+ memcpy(kcb->prev_kprobe.kprobe_saved_ctl, kcb->kprobe_saved_ctl,
+ sizeof(kcb->kprobe_saved_ctl));
+}
+
+static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)
+{
+ __get_cpu_var(current_kprobe) = kcb->prev_kprobe.kp;
+ kcb->kprobe_status = kcb->prev_kprobe.status;
+ kcb->kprobe_saved_imask = kcb->prev_kprobe.kprobe_saved_imask;
+ memcpy(kcb->kprobe_saved_ctl, kcb->prev_kprobe.kprobe_saved_ctl,
+ sizeof(kcb->kprobe_saved_ctl));
+}
+
+static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
+ struct kprobe_ctlblk *kcb)
+{
+ __get_cpu_var(current_kprobe) = p;
+ /* Save the interrupt and per flags */
+ kcb->kprobe_saved_imask = regs->psw.mask &
+ (PSW_MASK_PER | PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK);
+ /* Save the control regs that govern PER */
+ __ctl_store(kcb->kprobe_saved_ctl, 9, 11);
+}
+
+/* Called with kretprobe_lock held */
+void __kprobes arch_prepare_kretprobe(struct kretprobe *rp,
+ struct pt_regs *regs)
+{
+ struct kretprobe_instance *ri;
+
+ if ((ri = get_free_rp_inst(rp)) != NULL) {
+ ri->rp = rp;
+ ri->task = current;
+ ri->ret_addr = (kprobe_opcode_t *) regs->gprs[14];
+
+ /* Replace the return addr with trampoline addr */
+ regs->gprs[14] = (unsigned long)&kretprobe_trampoline;
+
+ add_rp_inst(ri);
+ } else {
+ rp->nmissed++;
+ }
+}
+
+static int __kprobes kprobe_handler(struct pt_regs *regs)
+{
+ struct kprobe *p;
+ int ret = 0;
+ unsigned long *addr = (unsigned long *)
+ ((regs->psw.addr & PSW_ADDR_INSN) - 2);
+ struct kprobe_ctlblk *kcb;
+
+ /*
+ * We don't want to be preempted for the entire
+ * duration of kprobe processing
+ */
+ preempt_disable();
+ kcb = get_kprobe_ctlblk();
+
+ /* Check we're not actually recursing */
+ if (kprobe_running()) {
+ p = get_kprobe(addr);
+ if (p) {
+ if (kcb->kprobe_status == KPROBE_HIT_SS &&
+ *p->ainsn.insn == BREAKPOINT_INSTRUCTION) {
+ regs->psw.mask &= ~PSW_MASK_PER;
+ regs->psw.mask |= kcb->kprobe_saved_imask;
+ goto no_kprobe;
+ }
+ /* We have reentered the kprobe_handler(), since
+ * another probe was hit while within the handler.
+ * We here save the original kprobes variables and
+ * just single step on the instruction of the new probe
+ * without calling any user handlers.
+ */
+ save_previous_kprobe(kcb);
+ set_current_kprobe(p, regs, kcb);
+ kprobes_inc_nmissed_count(p);
+ prepare_singlestep(p, regs);
+ kcb->kprobe_status = KPROBE_REENTER;
+ return 1;
+ } else {
+ p = __get_cpu_var(current_kprobe);
+ if (p->break_handler && p->break_handler(p, regs)) {
+ goto ss_probe;
+ }
+ }
+ goto no_kprobe;
+ }
+
+ p = get_kprobe(addr);
+ if (!p) {
+ if (*addr != BREAKPOINT_INSTRUCTION) {
+ /*
+ * The breakpoint instruction was removed right
+ * after we hit it. Another cpu has removed
+ * either a probepoint or a debugger breakpoint
+ * at this address. In either case, no further
+ * handling of this interrupt is appropriate.
+ *
+ */
+ ret = 1;
+ }
+ /* Not one of ours: let kernel handle it */
+ goto no_kprobe;
+ }
+
+ kcb->kprobe_status = KPROBE_HIT_ACTIVE;
+ set_current_kprobe(p, regs, kcb);
+ if (p->pre_handler && p->pre_handler(p, regs))
+ /* handler has already set things up, so skip ss setup */
+ return 1;
+
+ss_probe:
+ prepare_singlestep(p, regs);
+ kcb->kprobe_status = KPROBE_HIT_SS;
+ return 1;
+
+no_kprobe:
+ preempt_enable_no_resched();
+ return ret;
+}
+
+/*
+ * Function return probe trampoline:
+ * - init_kprobes() establishes a probepoint here
+ * - When the probed function returns, this probe
+ * causes the handlers to fire
+ */
+void __kprobes kretprobe_trampoline_holder(void)
+{
+ asm volatile(".global kretprobe_trampoline\n"
+ "kretprobe_trampoline: bcr 0,0\n");
+}
+
+/*
+ * Called when the probe at kretprobe trampoline is hit
+ */
+int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
+{
+ struct kretprobe_instance *ri = NULL;
+ struct hlist_head *head;
+ struct hlist_node *node, *tmp;
+ unsigned long flags, orig_ret_address = 0;
+ unsigned long trampoline_address = (unsigned long)&kretprobe_trampoline;
+
+ spin_lock_irqsave(&kretprobe_lock, flags);
+ head = kretprobe_inst_table_head(current);
+
+ /*
+ * It is possible to have multiple instances associated with a given
+ * task either because an multiple functions in the call path
+ * have a return probe installed on them, and/or more then one return
+ * return probe was registered for a target function.
+ *
+ * We can handle this because:
+ * - instances are always inserted at the head of the list
+ * - when multiple return probes are registered for the same
+ * function, the first instance's ret_addr will point to the
+ * real return address, and all the rest will point to
+ * kretprobe_trampoline
+ */
+ hlist_for_each_entry_safe(ri, node, tmp, head, hlist) {
+ if (ri->task != current)
+ /* another task is sharing our hash bucket */
+ continue;
+
+ if (ri->rp && ri->rp->handler)
+ ri->rp->handler(ri, regs);
+
+ orig_ret_address = (unsigned long)ri->ret_addr;
+ recycle_rp_inst(ri);
+
+ if (orig_ret_address != trampoline_address) {
+ /*
+ * This is the real return address. Any other
+ * instances associated with this task are for
+ * other calls deeper on the call stack
+ */
+ break;
+ }
+ }
+ BUG_ON(!orig_ret_address || (orig_ret_address == trampoline_address));
+ regs->psw.addr = orig_ret_address | PSW_ADDR_AMODE;
+
+ reset_current_kprobe();
+ spin_unlock_irqrestore(&kretprobe_lock, flags);
+ preempt_enable_no_resched();
+
+ /*
+ * By returning a non-zero value, we are telling
+ * kprobe_handler() that we don't want the post_handler
+ * to run (and have re-enabled preemption)
+ */
+ return 1;
+}
+
+/*
+ * Called after single-stepping. p->addr is the address of the
+ * instruction whose first byte has been replaced by the "breakpoint"
+ * instruction. To avoid the SMP problems that can occur when we
+ * temporarily put back the original opcode to single-step, we
+ * single-stepped a copy of the instruction. The address of this
+ * copy is p->ainsn.insn.
+ */
+static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
+{
+ struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+ regs->psw.addr &= PSW_ADDR_INSN;
+
+ if (p->ainsn.fixup & FIXUP_PSW_NORMAL)
+ regs->psw.addr = (unsigned long)p->addr +
+ ((unsigned long)regs->psw.addr -
+ (unsigned long)p->ainsn.insn);
+
+ if (p->ainsn.fixup & FIXUP_BRANCH_NOT_TAKEN)
+ if ((unsigned long)regs->psw.addr -
+ (unsigned long)p->ainsn.insn == p->ainsn.ilen)
+ regs->psw.addr = (unsigned long)p->addr + p->ainsn.ilen;
+
+ if (p->ainsn.fixup & FIXUP_RETURN_REGISTER)
+ regs->gprs[p->ainsn.reg] = ((unsigned long)p->addr +
+ (regs->gprs[p->ainsn.reg] -
+ (unsigned long)p->ainsn.insn))
+ | PSW_ADDR_AMODE;
+
+ regs->psw.addr |= PSW_ADDR_AMODE;
+ /* turn off PER mode */
+ regs->psw.mask &= ~PSW_MASK_PER;
+ /* Restore the original per control regs */
+ __ctl_load(kcb->kprobe_saved_ctl, 9, 11);
+ regs->psw.mask |= kcb->kprobe_saved_imask;
+}
+
+static int __kprobes post_kprobe_handler(struct pt_regs *regs)
+{
+ struct kprobe *cur = kprobe_running();
+ struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+ if (!cur)
+ return 0;
+
+ if ((kcb->kprobe_status != KPROBE_REENTER) && cur->post_handler) {
+ kcb->kprobe_status = KPROBE_HIT_SSDONE;
+ cur->post_handler(cur, regs, 0);
+ }
+
+ resume_execution(cur, regs);
+
+ /*Restore back the original saved kprobes variables and continue. */
+ if (kcb->kprobe_status == KPROBE_REENTER) {
+ restore_previous_kprobe(kcb);
+ goto out;
+ }
+ reset_current_kprobe();
+out:
+ preempt_enable_no_resched();
+
+ /*
+ * if somebody else is singlestepping across a probe point, psw mask
+ * will have PER set, in which case, continue the remaining processing
+ * of do_single_step, as if this is not a probe hit.
+ */
+ if (regs->psw.mask & PSW_MASK_PER) {
+ return 0;
+ }
+
+ return 1;
+}
+
+static int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
+{
+ struct kprobe *cur = kprobe_running();
+ struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+ const struct exception_table_entry *entry;
+
+ switch(kcb->kprobe_status) {
+ case KPROBE_SWAP_INST:
+ /* We are here because the instruction replacement failed */
+ return 0;
+ case KPROBE_HIT_SS:
+ case KPROBE_REENTER:
+ /*
+ * We are here because the instruction being single
+ * stepped caused a page fault. We reset the current
+ * kprobe and the nip points back to the probe address
+ * and allow the page fault handler to continue as a
+ * normal page fault.
+ */
+ regs->psw.addr = (unsigned long)cur->addr | PSW_ADDR_AMODE;
+ regs->psw.mask &= ~PSW_MASK_PER;
+ regs->psw.mask |= kcb->kprobe_saved_imask;
+ if (kcb->kprobe_status == KPROBE_REENTER)
+ restore_previous_kprobe(kcb);
+ else
+ reset_current_kprobe();
+ preempt_enable_no_resched();
+ break;
+ case KPROBE_HIT_ACTIVE:
+ case KPROBE_HIT_SSDONE:
+ /*
+ * We increment the nmissed count for accounting,
+ * we can also use npre/npostfault count for accouting
+ * these specific fault cases.
+ */
+ kprobes_inc_nmissed_count(cur);
+
+ /*
+ * We come here because instructions in the pre/post
+ * handler caused the page_fault, this could happen
+ * if handler tries to access user space by
+ * copy_from_user(), get_user() etc. Let the
+ * user-specified handler try to fix it first.
+ */
+ if (cur->fault_handler && cur->fault_handler(cur, regs, trapnr))
+ return 1;
+
+ /*
+ * In case the user-specified fault handler returned
+ * zero, try to fix up.
+ */
+ entry = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
+ if (entry) {
+ regs->psw.addr = entry->fixup | PSW_ADDR_AMODE;
+ return 1;
+ }
+
+ /*
+ * fixup_exception() could not handle it,
+ * Let do_page_fault() fix it.
+ */
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+/*
+ * Wrapper routine to for handling exceptions.
+ */
+int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
+ unsigned long val, void *data)
+{
+ struct die_args *args = (struct die_args *)data;
+ int ret = NOTIFY_DONE;
+
+ switch (val) {
+ case DIE_BPT:
+ if (kprobe_handler(args->regs))
+ ret = NOTIFY_STOP;
+ break;
+ case DIE_SSTEP:
+ if (post_kprobe_handler(args->regs))
+ ret = NOTIFY_STOP;
+ break;
+ case DIE_TRAP:
+ case DIE_PAGE_FAULT:
+ /* kprobe_running() needs smp_processor_id() */
+ preempt_disable();
+ if (kprobe_running() &&
+ kprobe_fault_handler(args->regs, args->trapnr))
+ ret = NOTIFY_STOP;
+ preempt_enable();
+ break;
+ default:
+ break;
+ }
+ return ret;
+}
+
+int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
+{
+ struct jprobe *jp = container_of(p, struct jprobe, kp);
+ unsigned long addr;
+ struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+ memcpy(&kcb->jprobe_saved_regs, regs, sizeof(struct pt_regs));
+
+ /* setup return addr to the jprobe handler routine */
+ regs->psw.addr = (unsigned long)(jp->entry) | PSW_ADDR_AMODE;
+
+ /* r14 is the function return address */
+ kcb->jprobe_saved_r14 = (unsigned long)regs->gprs[14];
+ /* r15 is the stack pointer */
+ kcb->jprobe_saved_r15 = (unsigned long)regs->gprs[15];
+ addr = (unsigned long)kcb->jprobe_saved_r15;
+
+ memcpy(kcb->jprobes_stack, (kprobe_opcode_t *) addr,
+ MIN_STACK_SIZE(addr));
+ return 1;
+}
+
+void __kprobes jprobe_return(void)
+{
+ asm volatile(".word 0x0002");
+}
+
+void __kprobes jprobe_return_end(void)
+{
+ asm volatile("bcr 0,0");
+}
+
+int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
+{
+ struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+ unsigned long stack_addr = (unsigned long)(kcb->jprobe_saved_r15);
+
+ /* Put the regs back */
+ memcpy(regs, &kcb->jprobe_saved_regs, sizeof(struct pt_regs));
+ /* put the stack back */
+ memcpy((kprobe_opcode_t *) stack_addr, kcb->jprobes_stack,
+ MIN_STACK_SIZE(stack_addr));
+ preempt_enable_no_resched();
+ return 1;
+}
+
+static struct kprobe trampoline_p = {
+ .addr = (kprobe_opcode_t *) & kretprobe_trampoline,
+ .pre_handler = trampoline_probe_handler
+};
+
+int __init arch_init_kprobes(void)
+{
+ return register_kprobe(&trampoline_p);
+}
#include <asm/lowcore.h>
- .globl do_reipl
-do_reipl: basr %r13,0
+ .globl do_reipl_asm
+do_reipl_asm: basr %r13,0
.Lpg0: lpsw .Lnewpsw-.Lpg0(%r13)
-.Lpg1: lctl %c6,%c6,.Lall-.Lpg0(%r13)
- stctl %c0,%c0,.Lctlsave-.Lpg0(%r13)
- ni .Lctlsave-.Lpg0(%r13),0xef
- lctl %c0,%c0,.Lctlsave-.Lpg0(%r13)
+
+ # switch off lowcore protection
+
+.Lpg1: stctl %c0,%c0,.Lctlsave1-.Lpg0(%r13)
+ stctl %c0,%c0,.Lctlsave2-.Lpg0(%r13)
+ ni .Lctlsave1-.Lpg0(%r13),0xef
+ lctl %c0,%c0,.Lctlsave1-.Lpg0(%r13)
+
+ # do store status of all registers
+
+ stm %r0,%r15,__LC_GPREGS_SAVE_AREA
+ stctl %c0,%c15,__LC_CREGS_SAVE_AREA
+ mvc __LC_CREGS_SAVE_AREA(4),.Lctlsave2-.Lpg0(%r13)
+ stam %a0,%a15,__LC_AREGS_SAVE_AREA
+ stpx __LC_PREFIX_SAVE_AREA
+ stckc .Lclkcmp-.Lpg0(%r13)
+ mvc __LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13)
+ stpt __LC_CPU_TIMER_SAVE_AREA
+ st %r13, __LC_PSW_SAVE_AREA+4
+
+ lctl %c6,%c6,.Lall-.Lpg0(%r13)
lr %r1,%r2
mvc __LC_PGM_NEW_PSW(8),.Lpcnew-.Lpg0(%r13)
stsch .Lschib-.Lpg0(%r13)
.Ldisab: st %r14,.Ldispsw+4-.Lpg0(%r13)
lpsw .Ldispsw-.Lpg0(%r13)
.align 8
+.Lclkcmp: .quad 0x0000000000000000
.Lall: .long 0xff000000
.Lnull: .long 0x00000000
-.Lctlsave: .long 0x00000000
+.Lctlsave1: .long 0x00000000
+.Lctlsave2: .long 0x00000000
.align 8
.Lnewpsw: .long 0x00080000,0x80000000+.Lpg1
.Lpcnew: .long 0x00080000,0x80000000+.Lecs
*/
#include <asm/lowcore.h>
- .globl do_reipl
-do_reipl: basr %r13,0
-.Lpg0: lpswe .Lnewpsw-.Lpg0(%r13)
+ .globl do_reipl_asm
+do_reipl_asm: basr %r13,0
+
+ # do store status of all registers
+
+.Lpg0: stg %r1,.Lregsave-.Lpg0(%r13)
+ lghi %r1,0x1000
+ stmg %r0,%r15,__LC_GPREGS_SAVE_AREA-0x1000(%r1)
+ lg %r0,.Lregsave-.Lpg0(%r13)
+ stg %r0,__LC_GPREGS_SAVE_AREA-0x1000+8(%r1)
+ stctg %c0,%c15,__LC_CREGS_SAVE_AREA-0x1000(%r1)
+ stam %a0,%a15,__LC_AREGS_SAVE_AREA-0x1000(%r1)
+ stpx __LC_PREFIX_SAVE_AREA-0x1000(%r1)
+ stfpc __LC_FP_CREG_SAVE_AREA-0x1000(%r1)
+ stckc .Lclkcmp-.Lpg0(%r13)
+ mvc __LC_CLOCK_COMP_SAVE_AREA-0x1000(8,%r1),.Lclkcmp-.Lpg0(%r13)
+ stpt __LC_CPU_TIMER_SAVE_AREA-0x1000(%r1)
+ stg %r13, __LC_PSW_SAVE_AREA-0x1000+8(%r1)
+
+ lpswe .Lnewpsw-.Lpg0(%r13)
.Lpg1: lctlg %c6,%c6,.Lall-.Lpg0(%r13)
- stctg %c0,%c0,.Lctlsave-.Lpg0(%r13)
- ni .Lctlsave+4-.Lpg0(%r13),0xef
- lctlg %c0,%c0,.Lctlsave-.Lpg0(%r13)
+ stctg %c0,%c0,.Lregsave-.Lpg0(%r13)
+ ni .Lregsave+4-.Lpg0(%r13),0xef
+ lctlg %c0,%c0,.Lregsave-.Lpg0(%r13)
lgr %r1,%r2
mvc __LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13)
stsch .Lschib-.Lpg0(%r13)
st %r14,.Ldispsw+12-.Lpg0(%r13)
lpswe .Ldispsw-.Lpg0(%r13)
.align 8
+.Lclkcmp: .quad 0x0000000000000000
.Lall: .quad 0x00000000ff000000
-.Lctlsave: .quad 0x0000000000000000
+.Lregsave: .quad 0x0000000000000000
.Lnull: .long 0x0000000000000000
.align 16
/*
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
-
-
+++ /dev/null
-/*
- * This file contains the implementation of the
- * Linux re-IPL support
- *
- * (C) Copyright IBM Corp. 2005
- *
- * Author(s): Volker Sameske (sameske@de.ibm.com)
- *
- */
-
-#include <linux/kernel.h>
-
-static unsigned int reipl_diag_rc1;
-static unsigned int reipl_diag_rc2;
-
-/*
- * re-IPL the system using the last used IPL parameters
- */
-void reipl_diag(void)
-{
- asm volatile (
- " la %%r4,0\n"
- " la %%r5,0\n"
- " diag %%r4,%2,0x308\n"
- "0:\n"
- " st %%r4,%0\n"
- " st %%r5,%1\n"
- ".section __ex_table,\"a\"\n"
-#ifdef CONFIG_64BIT
- " .align 8\n"
- " .quad 0b, 0b\n"
-#else
- " .align 4\n"
- " .long 0b, 0b\n"
-#endif
- ".previous\n"
- : "=m" (reipl_diag_rc1), "=m" (reipl_diag_rc2)
- : "d" (3) : "cc", "4", "5" );
-}
EXPORT_SYMBOL(_ni_bitmap);
EXPORT_SYMBOL(_zb_findmap);
EXPORT_SYMBOL(_sb_findmap);
-EXPORT_SYMBOL(__copy_from_user_asm);
-EXPORT_SYMBOL(__copy_to_user_asm);
-EXPORT_SYMBOL(__copy_in_user_asm);
-EXPORT_SYMBOL(__clear_user_asm);
-EXPORT_SYMBOL(__strncpy_from_user_asm);
-EXPORT_SYMBOL(__strnlen_user_asm);
EXPORT_SYMBOL(diag10);
/*
#include <linux/kernel_stat.h>
#include <linux/device.h>
#include <linux/notifier.h>
+#include <linux/pfn.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/ptrace.h>
#include <asm/sections.h>
+/*
+ * User copy operations.
+ */
+struct uaccess_ops uaccess;
+EXPORT_SYMBOL_GPL(uaccess);
+
/*
* Machine setup..
*/
/*
* Reboot, halt and power_off routines for non SMP.
*/
-extern void reipl(unsigned long devno);
-extern void reipl_diag(void);
static void do_machine_restart_nonsmp(char * __unused)
{
- reipl_diag();
-
- if (MACHINE_IS_VM)
- cpcmd ("IPL", NULL, 0, NULL);
- else
- reipl (0x10000 | S390_lowcore.ipl_device);
+ do_reipl();
}
static void do_machine_halt_nonsmp(void)
* partially used pages are not usable - thus
* we are rounding upwards:
*/
- start_pfn = (__pa(&_end) + PAGE_SIZE - 1) >> PAGE_SHIFT;
- end_pfn = max_pfn = memory_end >> PAGE_SHIFT;
+ start_pfn = PFN_UP(__pa(&_end));
+ end_pfn = max_pfn = PFN_DOWN(memory_end);
/* Initialize storage key for kernel pages */
for (init_pfn = 0 ; init_pfn < start_pfn; init_pfn++)
page_set_storage_key(init_pfn << PAGE_SHIFT, PAGE_DEFAULT_KEY);
+#ifdef CONFIG_BLK_DEV_INITRD
+ /*
+ * Move the initrd in case the bitmap of the bootmem allocater
+ * would overwrite it.
+ */
+
+ if (INITRD_START && INITRD_SIZE) {
+ unsigned long bmap_size;
+ unsigned long start;
+
+ bmap_size = bootmem_bootmap_pages(end_pfn - start_pfn + 1);
+ bmap_size = PFN_PHYS(bmap_size);
+
+ if (PFN_PHYS(start_pfn) + bmap_size > INITRD_START) {
+ start = PFN_PHYS(start_pfn) + bmap_size + PAGE_SIZE;
+
+ if (start + INITRD_SIZE > memory_end) {
+ printk("initrd extends beyond end of memory "
+ "(0x%08lx > 0x%08lx)\n"
+ "disabling initrd\n",
+ start + INITRD_SIZE, memory_end);
+ INITRD_START = INITRD_SIZE = 0;
+ } else {
+ printk("Moving initrd (0x%08lx -> 0x%08lx, "
+ "size: %ld)\n",
+ INITRD_START, start, INITRD_SIZE);
+ memmove((void *) start, (void *) INITRD_START,
+ INITRD_SIZE);
+ INITRD_START = start;
+ }
+ }
+ }
+#endif
+
/*
* Initialize the boot-time allocator (with low memory only):
*/
reserve_bootmem(start_pfn << PAGE_SHIFT, bootmap_size);
#ifdef CONFIG_BLK_DEV_INITRD
- if (INITRD_START) {
+ if (INITRD_START && INITRD_SIZE) {
if (INITRD_START + INITRD_SIZE <= memory_end) {
reserve_bootmem(INITRD_START, INITRD_SIZE);
initrd_start = INITRD_START;
memory_end = memory_size;
+ if (MACHINE_HAS_MVCOS)
+ memcpy(&uaccess, &uaccess_mvcos, sizeof(uaccess));
+ else
+ memcpy(&uaccess, &uaccess_std, sizeof(uaccess));
+
parse_early_param();
#ifndef CONFIG_64BIT
.show = show_cpuinfo,
};
-#define DEFINE_IPL_ATTR(_name, _format, _value) \
-static ssize_t ipl_##_name##_show(struct subsystem *subsys, \
- char *page) \
-{ \
- return sprintf(page, _format, _value); \
-} \
-static struct subsys_attribute ipl_##_name##_attr = \
- __ATTR(_name, S_IRUGO, ipl_##_name##_show, NULL);
-
-DEFINE_IPL_ATTR(wwpn, "0x%016llx\n", (unsigned long long)
- IPL_PARMBLOCK_START->fcp.wwpn);
-DEFINE_IPL_ATTR(lun, "0x%016llx\n", (unsigned long long)
- IPL_PARMBLOCK_START->fcp.lun);
-DEFINE_IPL_ATTR(bootprog, "%lld\n", (unsigned long long)
- IPL_PARMBLOCK_START->fcp.bootprog);
-DEFINE_IPL_ATTR(br_lba, "%lld\n", (unsigned long long)
- IPL_PARMBLOCK_START->fcp.br_lba);
-
-enum ipl_type_type {
- ipl_type_unknown,
- ipl_type_ccw,
- ipl_type_fcp,
-};
-
-static enum ipl_type_type
-get_ipl_type(void)
-{
- struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
-
- if (!IPL_DEVNO_VALID)
- return ipl_type_unknown;
- if (!IPL_PARMBLOCK_VALID)
- return ipl_type_ccw;
- if (ipl->hdr.header.version > IPL_MAX_SUPPORTED_VERSION)
- return ipl_type_unknown;
- if (ipl->fcp.pbt != IPL_TYPE_FCP)
- return ipl_type_unknown;
- return ipl_type_fcp;
-}
-
-static ssize_t
-ipl_type_show(struct subsystem *subsys, char *page)
-{
- switch (get_ipl_type()) {
- case ipl_type_ccw:
- return sprintf(page, "ccw\n");
- case ipl_type_fcp:
- return sprintf(page, "fcp\n");
- default:
- return sprintf(page, "unknown\n");
- }
-}
-
-static struct subsys_attribute ipl_type_attr = __ATTR_RO(ipl_type);
-
-static ssize_t
-ipl_device_show(struct subsystem *subsys, char *page)
-{
- struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
-
- switch (get_ipl_type()) {
- case ipl_type_ccw:
- return sprintf(page, "0.0.%04x\n", ipl_devno);
- case ipl_type_fcp:
- return sprintf(page, "0.0.%04x\n", ipl->fcp.devno);
- default:
- return 0;
- }
-}
-
-static struct subsys_attribute ipl_device_attr =
- __ATTR(device, S_IRUGO, ipl_device_show, NULL);
-
-static struct attribute *ipl_fcp_attrs[] = {
- &ipl_type_attr.attr,
- &ipl_device_attr.attr,
- &ipl_wwpn_attr.attr,
- &ipl_lun_attr.attr,
- &ipl_bootprog_attr.attr,
- &ipl_br_lba_attr.attr,
- NULL,
-};
-
-static struct attribute_group ipl_fcp_attr_group = {
- .attrs = ipl_fcp_attrs,
-};
-
-static struct attribute *ipl_ccw_attrs[] = {
- &ipl_type_attr.attr,
- &ipl_device_attr.attr,
- NULL,
-};
-
-static struct attribute_group ipl_ccw_attr_group = {
- .attrs = ipl_ccw_attrs,
-};
-
-static struct attribute *ipl_unknown_attrs[] = {
- &ipl_type_attr.attr,
- NULL,
-};
-
-static struct attribute_group ipl_unknown_attr_group = {
- .attrs = ipl_unknown_attrs,
-};
-
-static ssize_t
-ipl_parameter_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
-{
- unsigned int size = IPL_PARMBLOCK_SIZE;
-
- if (off > size)
- return 0;
- if (off + count > size)
- count = size - off;
-
- memcpy(buf, (void *) IPL_PARMBLOCK_START + off, count);
- return count;
-}
-
-static struct bin_attribute ipl_parameter_attr = {
- .attr = {
- .name = "binary_parameter",
- .mode = S_IRUGO,
- .owner = THIS_MODULE,
- },
- .size = PAGE_SIZE,
- .read = &ipl_parameter_read,
-};
-
-static ssize_t
-ipl_scp_data_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
-{
- unsigned int size = IPL_PARMBLOCK_START->fcp.scp_data_len;
- void *scp_data = &IPL_PARMBLOCK_START->fcp.scp_data;
-
- if (off > size)
- return 0;
- if (off + count > size)
- count = size - off;
-
- memcpy(buf, scp_data + off, count);
- return count;
-}
-
-static struct bin_attribute ipl_scp_data_attr = {
- .attr = {
- .name = "scp_data",
- .mode = S_IRUGO,
- .owner = THIS_MODULE,
- },
- .size = PAGE_SIZE,
- .read = &ipl_scp_data_read,
-};
-
-static decl_subsys(ipl, NULL, NULL);
-
-static int ipl_register_fcp_files(void)
-{
- int rc;
-
- rc = sysfs_create_group(&ipl_subsys.kset.kobj,
- &ipl_fcp_attr_group);
- if (rc)
- goto out;
- rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
- &ipl_parameter_attr);
- if (rc)
- goto out_ipl_parm;
- rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
- &ipl_scp_data_attr);
- if (!rc)
- goto out;
-
- sysfs_remove_bin_file(&ipl_subsys.kset.kobj, &ipl_parameter_attr);
-
-out_ipl_parm:
- sysfs_remove_group(&ipl_subsys.kset.kobj, &ipl_fcp_attr_group);
-out:
- return rc;
-}
-
-static int __init
-ipl_device_sysfs_register(void) {
- int rc;
-
- rc = firmware_register(&ipl_subsys);
- if (rc)
- goto out;
-
- switch (get_ipl_type()) {
- case ipl_type_ccw:
- rc = sysfs_create_group(&ipl_subsys.kset.kobj,
- &ipl_ccw_attr_group);
- break;
- case ipl_type_fcp:
- rc = ipl_register_fcp_files();
- break;
- default:
- rc = sysfs_create_group(&ipl_subsys.kset.kobj,
- &ipl_unknown_attr_group);
- break;
- }
-
- if (rc)
- firmware_unregister(&ipl_subsys);
-out:
- return rc;
-}
-
-__initcall(ipl_device_sysfs_register);
static int save_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
{
unsigned long old_mask = regs->psw.mask;
- int err;
-
+ _sigregs user_sregs;
+
save_access_regs(current->thread.acrs);
/* Copy a 'clean' PSW mask to the user to avoid leaking
information about whether PER is currently on. */
regs->psw.mask = PSW_MASK_MERGE(PSW_USER_BITS, regs->psw.mask);
- err = __copy_to_user(&sregs->regs.psw, ®s->psw,
- sizeof(sregs->regs.psw)+sizeof(sregs->regs.gprs));
+ memcpy(&user_sregs.regs.psw, ®s->psw, sizeof(sregs->regs.psw) +
+ sizeof(sregs->regs.gprs));
regs->psw.mask = old_mask;
- if (err != 0)
- return err;
- err = __copy_to_user(&sregs->regs.acrs, current->thread.acrs,
- sizeof(sregs->regs.acrs));
- if (err != 0)
- return err;
+ memcpy(&user_sregs.regs.acrs, current->thread.acrs,
+ sizeof(sregs->regs.acrs));
/*
* We have to store the fp registers to current->thread.fp_regs
* to merge them with the emulated registers.
*/
save_fp_regs(¤t->thread.fp_regs);
- return __copy_to_user(&sregs->fpregs, ¤t->thread.fp_regs,
- sizeof(s390_fp_regs));
+ memcpy(&user_sregs.fpregs, ¤t->thread.fp_regs,
+ sizeof(s390_fp_regs));
+ return __copy_to_user(sregs, &user_sregs, sizeof(_sigregs));
}
/* Returns positive number on error */
{
unsigned long old_mask = regs->psw.mask;
int err;
+ _sigregs user_sregs;
/* Alwys make any pending restarted system call return -EINTR */
current_thread_info()->restart_block.fn = do_no_restart_syscall;
- err = __copy_from_user(®s->psw, &sregs->regs.psw,
- sizeof(sregs->regs.psw)+sizeof(sregs->regs.gprs));
+ err = __copy_from_user(&user_sregs, sregs, sizeof(_sigregs));
regs->psw.mask = PSW_MASK_MERGE(old_mask, regs->psw.mask);
regs->psw.addr |= PSW_ADDR_AMODE;
if (err)
return err;
- err = __copy_from_user(¤t->thread.acrs, &sregs->regs.acrs,
- sizeof(sregs->regs.acrs));
- if (err)
- return err;
+ memcpy(®s->psw, &user_sregs.regs.psw, sizeof(sregs->regs.psw) +
+ sizeof(sregs->regs.gprs));
+ memcpy(¤t->thread.acrs, &user_sregs.regs.acrs,
+ sizeof(sregs->regs.acrs));
restore_access_regs(current->thread.acrs);
- err = __copy_from_user(¤t->thread.fp_regs, &sregs->fpregs,
- sizeof(s390_fp_regs));
+ memcpy(¤t->thread.fp_regs, &user_sregs.fpregs,
+ sizeof(s390_fp_regs));
current->thread.fp_regs.fpc &= FPC_VALID_MASK;
- if (err)
- return err;
restore_fp_regs(¤t->thread.fp_regs);
regs->trap = -1; /* disable syscall checks */
case -ERESTART_RESTARTBLOCK:
regs->gprs[2] = -EINTR;
}
+ regs->trap = -1; /* Don't deal with this again. */
}
/* Get signal to deliver. When running under ptrace, at this point
extern char vmhalt_cmd[];
extern char vmpoff_cmd[];
-extern void reipl(unsigned long devno);
-extern void reipl_diag(void);
-
static void smp_ext_bitcall(int, ec_bit_sig);
static void smp_ext_bitcall_others(ec_bit_sig);
* interrupted by an external interrupt and s390irq
* locks are always held disabled).
*/
- reipl_diag();
-
- if (MACHINE_IS_VM)
- cpcmd ("IPL", NULL, 0, NULL);
- else
- reipl (0x10000 | S390_lowcore.ipl_device);
+ do_reipl();
}
void machine_restart_smp(char * __unused)
#include <linux/module.h>
#include <linux/kallsyms.h>
#include <linux/reboot.h>
+#include <linux/kprobes.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/s390_ext.h>
#include <asm/lowcore.h>
#include <asm/debug.h>
+#include <asm/kdebug.h>
/* Called from entry.S only */
extern void handle_per_exception(struct pt_regs *regs);
static int kstack_depth_to_print = 20;
#endif /* CONFIG_64BIT */
+ATOMIC_NOTIFIER_HEAD(s390die_chain);
+
+int register_die_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_register(&s390die_chain, nb);
+}
+EXPORT_SYMBOL(register_die_notifier);
+
+int unregister_die_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_unregister(&s390die_chain, nb);
+}
+EXPORT_SYMBOL(unregister_die_notifier);
+
/*
* For show_trace we have tree different stack to consider:
* - the panic stack which is used if the kernel stack has overflown
#endif
}
-static void inline do_trap(long interruption_code, int signr, char *str,
- struct pt_regs *regs, siginfo_t *info)
+static void __kprobes inline do_trap(long interruption_code, int signr,
+ char *str, struct pt_regs *regs,
+ siginfo_t *info)
{
/*
* We got all needed information from the lowcore and can
if (regs->psw.mask & PSW_MASK_PSTATE)
local_irq_enable();
+ if (notify_die(DIE_TRAP, str, regs, interruption_code,
+ interruption_code, signr) == NOTIFY_STOP)
+ return;
+
if (regs->psw.mask & PSW_MASK_PSTATE) {
struct task_struct *tsk = current;
return (void __user *)((regs->psw.addr-S390_lowcore.pgm_ilc) & PSW_ADDR_INSN);
}
-void do_single_step(struct pt_regs *regs)
+void __kprobes do_single_step(struct pt_regs *regs)
{
+ if (notify_die(DIE_SSTEP, "sstep", regs, 0, 0,
+ SIGTRAP) == NOTIFY_STOP){
+ return;
+ }
if ((current->ptrace & PT_PTRACED) != 0)
force_sig(SIGTRAP, current);
}
*(.text)
SCHED_TEXT
LOCK_TEXT
+ KPROBES_TEXT
*(.fixup)
*(.gnu.warning)
} = 0x0700
/* Sections to be discarded */
/DISCARD/ : {
- *(.exitcall.exit)
+ *(.exit.text) *(.exit.data) *(.exitcall.exit)
}
/* Stabs debugging sections. */
EXTRA_AFLAGS := -traditional
-lib-y += delay.o string.o
-lib-y += $(if $(CONFIG_64BIT),uaccess64.o,uaccess.o)
+lib-y += delay.o string.o uaccess_std.o
+lib-$(CONFIG_64BIT) += uaccess_mvcos.o
lib-$(CONFIG_SMP) += spinlock.o
+++ /dev/null
-/*
- * arch/s390/lib/uaccess.S
- * __copy_{from|to}_user functions.
- *
- * s390
- * Copyright (C) 2000,2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Authors(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
- *
- * These functions have standard call interface
- */
-
-#include <linux/errno.h>
-#include <asm/lowcore.h>
-#include <asm/asm-offsets.h>
-
- .text
- .align 4
- .globl __copy_from_user_asm
- # %r2 = to, %r3 = n, %r4 = from
-__copy_from_user_asm:
- slr %r0,%r0
-0: mvcp 0(%r3,%r2),0(%r4),%r0
- jnz 1f
- slr %r2,%r2
- br %r14
-1: la %r2,256(%r2)
- la %r4,256(%r4)
- ahi %r3,-256
-2: mvcp 0(%r3,%r2),0(%r4),%r0
- jnz 1b
-3: slr %r2,%r2
- br %r14
-4: lhi %r0,-4096
- lr %r5,%r4
- slr %r5,%r0
- nr %r5,%r0 # %r5 = (%r4 + 4096) & -4096
- slr %r5,%r4 # %r5 = #bytes to next user page boundary
- clr %r3,%r5 # copy crosses next page boundary ?
- jnh 6f # no, the current page faulted
- # move with the reduced length which is < 256
-5: mvcp 0(%r5,%r2),0(%r4),%r0
- slr %r3,%r5
-6: lr %r2,%r3
- br %r14
- .section __ex_table,"a"
- .long 0b,4b
- .long 2b,4b
- .long 5b,6b
- .previous
-
- .align 4
- .text
- .globl __copy_to_user_asm
- # %r2 = from, %r3 = n, %r4 = to
-__copy_to_user_asm:
- slr %r0,%r0
-0: mvcs 0(%r3,%r4),0(%r2),%r0
- jnz 1f
- slr %r2,%r2
- br %r14
-1: la %r2,256(%r2)
- la %r4,256(%r4)
- ahi %r3,-256
-2: mvcs 0(%r3,%r4),0(%r2),%r0
- jnz 1b
-3: slr %r2,%r2
- br %r14
-4: lhi %r0,-4096
- lr %r5,%r4
- slr %r5,%r0
- nr %r5,%r0 # %r5 = (%r4 + 4096) & -4096
- slr %r5,%r4 # %r5 = #bytes to next user page boundary
- clr %r3,%r5 # copy crosses next page boundary ?
- jnh 6f # no, the current page faulted
- # move with the reduced length which is < 256
-5: mvcs 0(%r5,%r4),0(%r2),%r0
- slr %r3,%r5
-6: lr %r2,%r3
- br %r14
- .section __ex_table,"a"
- .long 0b,4b
- .long 2b,4b
- .long 5b,6b
- .previous
-
- .align 4
- .text
- .globl __copy_in_user_asm
- # %r2 = from, %r3 = n, %r4 = to
-__copy_in_user_asm:
- ahi %r3,-1
- jo 6f
- sacf 256
- bras %r1,4f
-0: ahi %r3,257
-1: mvc 0(1,%r4),0(%r2)
- la %r2,1(%r2)
- la %r4,1(%r4)
- ahi %r3,-1
- jnz 1b
-2: lr %r2,%r3
- br %r14
-3: mvc 0(256,%r4),0(%r2)
- la %r2,256(%r2)
- la %r4,256(%r4)
-4: ahi %r3,-256
- jnm 3b
-5: ex %r3,4(%r1)
- sacf 0
-6: slr %r2,%r2
- br %r14
- .section __ex_table,"a"
- .long 1b,2b
- .long 3b,0b
- .long 5b,0b
- .previous
-
- .align 4
- .text
- .globl __clear_user_asm
- # %r2 = to, %r3 = n
-__clear_user_asm:
- bras %r5,0f
- .long empty_zero_page
-0: l %r5,0(%r5)
- slr %r0,%r0
-1: mvcs 0(%r3,%r2),0(%r5),%r0
- jnz 2f
- slr %r2,%r2
- br %r14
-2: la %r2,256(%r2)
- ahi %r3,-256
-3: mvcs 0(%r3,%r2),0(%r5),%r0
- jnz 2b
-4: slr %r2,%r2
- br %r14
-5: lhi %r0,-4096
- lr %r4,%r2
- slr %r4,%r0
- nr %r4,%r0 # %r4 = (%r2 + 4096) & -4096
- slr %r4,%r2 # %r4 = #bytes to next user page boundary
- clr %r3,%r4 # clear crosses next page boundary ?
- jnh 7f # no, the current page faulted
- # clear with the reduced length which is < 256
-6: mvcs 0(%r4,%r2),0(%r5),%r0
- slr %r3,%r4
-7: lr %r2,%r3
- br %r14
- .section __ex_table,"a"
- .long 1b,5b
- .long 3b,5b
- .long 6b,7b
- .previous
-
- .align 4
- .text
- .globl __strncpy_from_user_asm
- # %r2 = count, %r3 = dst, %r4 = src
-__strncpy_from_user_asm:
- lhi %r0,0
- lr %r1,%r4
- la %r4,0(%r4) # clear high order bit from %r4
- la %r2,0(%r2,%r4) # %r2 points to first byte after string
- sacf 256
-0: srst %r2,%r1
- jo 0b
- sacf 0
- lr %r1,%r2
- jh 1f # \0 found in string ?
- ahi %r1,1 # include \0 in copy
-1: slr %r1,%r4 # %r1 = copy length (without \0)
- slr %r2,%r4 # %r2 = return length (including \0)
-2: mvcp 0(%r1,%r3),0(%r4),%r0
- jnz 3f
- br %r14
-3: la %r3,256(%r3)
- la %r4,256(%r4)
- ahi %r1,-256
- mvcp 0(%r1,%r3),0(%r4),%r0
- jnz 3b
- br %r14
-4: sacf 0
- lhi %r2,-EFAULT
- br %r14
- .section __ex_table,"a"
- .long 0b,4b
- .previous
-
- .align 4
- .text
- .globl __strnlen_user_asm
- # %r2 = count, %r3 = src
-__strnlen_user_asm:
- lhi %r0,0
- lr %r1,%r3
- la %r3,0(%r3) # clear high order bit from %r4
- la %r2,0(%r2,%r3) # %r2 points to first byte after string
- sacf 256
-0: srst %r2,%r1
- jo 0b
- sacf 0
- ahi %r2,1 # strnlen_user result includes the \0
- # or return count+1 if \0 not found
- slr %r2,%r3
- br %r14
-2: sacf 0
- slr %r2,%r2 # return 0 on exception
- br %r14
- .section __ex_table,"a"
- .long 0b,2b
- .previous
+++ /dev/null
-/*
- * arch/s390x/lib/uaccess.S
- * __copy_{from|to}_user functions.
- *
- * s390
- * Copyright (C) 2000,2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Authors(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
- *
- * These functions have standard call interface
- */
-
-#include <linux/errno.h>
-#include <asm/lowcore.h>
-#include <asm/asm-offsets.h>
-
- .text
- .align 4
- .globl __copy_from_user_asm
- # %r2 = to, %r3 = n, %r4 = from
-__copy_from_user_asm:
- slgr %r0,%r0
-0: mvcp 0(%r3,%r2),0(%r4),%r0
- jnz 1f
- slgr %r2,%r2
- br %r14
-1: la %r2,256(%r2)
- la %r4,256(%r4)
- aghi %r3,-256
-2: mvcp 0(%r3,%r2),0(%r4),%r0
- jnz 1b
-3: slgr %r2,%r2
- br %r14
-4: lghi %r0,-4096
- lgr %r5,%r4
- slgr %r5,%r0
- ngr %r5,%r0 # %r5 = (%r4 + 4096) & -4096
- slgr %r5,%r4 # %r5 = #bytes to next user page boundary
- clgr %r3,%r5 # copy crosses next page boundary ?
- jnh 6f # no, the current page faulted
- # move with the reduced length which is < 256
-5: mvcp 0(%r5,%r2),0(%r4),%r0
- slgr %r3,%r5
-6: lgr %r2,%r3
- br %r14
- .section __ex_table,"a"
- .quad 0b,4b
- .quad 2b,4b
- .quad 5b,6b
- .previous
-
- .align 4
- .text
- .globl __copy_to_user_asm
- # %r2 = from, %r3 = n, %r4 = to
-__copy_to_user_asm:
- slgr %r0,%r0
-0: mvcs 0(%r3,%r4),0(%r2),%r0
- jnz 1f
- slgr %r2,%r2
- br %r14
-1: la %r2,256(%r2)
- la %r4,256(%r4)
- aghi %r3,-256
-2: mvcs 0(%r3,%r4),0(%r2),%r0
- jnz 1b
-3: slgr %r2,%r2
- br %r14
-4: lghi %r0,-4096
- lgr %r5,%r4
- slgr %r5,%r0
- ngr %r5,%r0 # %r5 = (%r4 + 4096) & -4096
- slgr %r5,%r4 # %r5 = #bytes to next user page boundary
- clgr %r3,%r5 # copy crosses next page boundary ?
- jnh 6f # no, the current page faulted
- # move with the reduced length which is < 256
-5: mvcs 0(%r5,%r4),0(%r2),%r0
- slgr %r3,%r5
-6: lgr %r2,%r3
- br %r14
- .section __ex_table,"a"
- .quad 0b,4b
- .quad 2b,4b
- .quad 5b,6b
- .previous
-
- .align 4
- .text
- .globl __copy_in_user_asm
- # %r2 = from, %r3 = n, %r4 = to
-__copy_in_user_asm:
- aghi %r3,-1
- jo 6f
- sacf 256
- bras %r1,4f
-0: aghi %r3,257
-1: mvc 0(1,%r4),0(%r2)
- la %r2,1(%r2)
- la %r4,1(%r4)
- aghi %r3,-1
- jnz 1b
-2: lgr %r2,%r3
- br %r14
-3: mvc 0(256,%r4),0(%r2)
- la %r2,256(%r2)
- la %r4,256(%r4)
-4: aghi %r3,-256
- jnm 3b
-5: ex %r3,4(%r1)
- sacf 0
-6: slgr %r2,%r2
- br 14
- .section __ex_table,"a"
- .quad 1b,2b
- .quad 3b,0b
- .quad 5b,0b
- .previous
-
- .align 4
- .text
- .globl __clear_user_asm
- # %r2 = to, %r3 = n
-__clear_user_asm:
- slgr %r0,%r0
- larl %r5,empty_zero_page
-1: mvcs 0(%r3,%r2),0(%r5),%r0
- jnz 2f
- slgr %r2,%r2
- br %r14
-2: la %r2,256(%r2)
- aghi %r3,-256
-3: mvcs 0(%r3,%r2),0(%r5),%r0
- jnz 2b
-4: slgr %r2,%r2
- br %r14
-5: lghi %r0,-4096
- lgr %r4,%r2
- slgr %r4,%r0
- ngr %r4,%r0 # %r4 = (%r2 + 4096) & -4096
- slgr %r4,%r2 # %r4 = #bytes to next user page boundary
- clgr %r3,%r4 # clear crosses next page boundary ?
- jnh 7f # no, the current page faulted
- # clear with the reduced length which is < 256
-6: mvcs 0(%r4,%r2),0(%r5),%r0
- slgr %r3,%r4
-7: lgr %r2,%r3
- br %r14
- .section __ex_table,"a"
- .quad 1b,5b
- .quad 3b,5b
- .quad 6b,7b
- .previous
-
- .align 4
- .text
- .globl __strncpy_from_user_asm
- # %r2 = count, %r3 = dst, %r4 = src
-__strncpy_from_user_asm:
- lghi %r0,0
- lgr %r1,%r4
- la %r2,0(%r2,%r4) # %r2 points to first byte after string
- sacf 256
-0: srst %r2,%r1
- jo 0b
- sacf 0
- lgr %r1,%r2
- jh 1f # \0 found in string ?
- aghi %r1,1 # include \0 in copy
-1: slgr %r1,%r4 # %r1 = copy length (without \0)
- slgr %r2,%r4 # %r2 = return length (including \0)
-2: mvcp 0(%r1,%r3),0(%r4),%r0
- jnz 3f
- br %r14
-3: la %r3,256(%r3)
- la %r4,256(%r4)
- aghi %r1,-256
- mvcp 0(%r1,%r3),0(%r4),%r0
- jnz 3b
- br %r14
-4: sacf 0
- lghi %r2,-EFAULT
- br %r14
- .section __ex_table,"a"
- .quad 0b,4b
- .previous
-
- .align 4
- .text
- .globl __strnlen_user_asm
- # %r2 = count, %r3 = src
-__strnlen_user_asm:
- lghi %r0,0
- lgr %r1,%r3
- la %r2,0(%r2,%r3) # %r2 points to first byte after string
- sacf 256
-0: srst %r2,%r1
- jo 0b
- sacf 0
- aghi %r2,1 # strnlen_user result includes the \0
- # or return count+1 if \0 not found
- slgr %r2,%r3
- br %r14
-2: sacf 0
- slgr %r2,%r2 # return 0 on exception
- br %r14
- .section __ex_table,"a"
- .quad 0b,2b
- .previous
--- /dev/null
+/*
+ * arch/s390/lib/uaccess_mvcos.c
+ *
+ * Optimized user space space access functions based on mvcos.
+ *
+ * Copyright (C) IBM Corp. 2006
+ * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
+ * Gerald Schaefer (gerald.schaefer@de.ibm.com)
+ */
+
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <asm/uaccess.h>
+#include <asm/futex.h>
+
+#ifndef __s390x__
+#define AHI "ahi"
+#define ALR "alr"
+#define CLR "clr"
+#define LHI "lhi"
+#define SLR "slr"
+#else
+#define AHI "aghi"
+#define ALR "algr"
+#define CLR "clgr"
+#define LHI "lghi"
+#define SLR "slgr"
+#endif
+
+size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
+{
+ register unsigned long reg0 asm("0") = 0x81UL;
+ unsigned long tmp1, tmp2;
+
+ tmp1 = -4096UL;
+ asm volatile(
+ "0: .insn ss,0xc80000000000,0(%0,%2),0(%1),0\n"
+ " jz 4f\n"
+ "1:"ALR" %0,%3\n"
+ " "SLR" %1,%3\n"
+ " "SLR" %2,%3\n"
+ " j 0b\n"
+ "2: la %4,4095(%1)\n"/* %4 = ptr + 4095 */
+ " nr %4,%3\n" /* %4 = (ptr + 4095) & -4096 */
+ " "SLR" %4,%1\n"
+ " "CLR" %0,%4\n" /* copy crosses next page boundary? */
+ " jnh 5f\n"
+ "3: .insn ss,0xc80000000000,0(%4,%2),0(%1),0\n"
+ " "SLR" %0,%4\n"
+ " j 5f\n"
+ "4:"SLR" %0,%0\n"
+ "5: \n"
+ EX_TABLE(0b,2b) EX_TABLE(3b,5b)
+ : "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+ : "d" (reg0) : "cc", "memory");
+ return size;
+}
+
+size_t copy_to_user_mvcos(size_t size, void __user *ptr, const void *x)
+{
+ register unsigned long reg0 asm("0") = 0x810000UL;
+ unsigned long tmp1, tmp2;
+
+ tmp1 = -4096UL;
+ asm volatile(
+ "0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
+ " jz 4f\n"
+ "1:"ALR" %0,%3\n"
+ " "SLR" %1,%3\n"
+ " "SLR" %2,%3\n"
+ " j 0b\n"
+ "2: la %4,4095(%1)\n"/* %4 = ptr + 4095 */
+ " nr %4,%3\n" /* %4 = (ptr + 4095) & -4096 */
+ " "SLR" %4,%1\n"
+ " "CLR" %0,%4\n" /* copy crosses next page boundary? */
+ " jnh 5f\n"
+ "3: .insn ss,0xc80000000000,0(%4,%1),0(%2),0\n"
+ " "SLR" %0,%4\n"
+ " j 5f\n"
+ "4:"SLR" %0,%0\n"
+ "5: \n"
+ EX_TABLE(0b,2b) EX_TABLE(3b,5b)
+ : "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+ : "d" (reg0) : "cc", "memory");
+ return size;
+}
+
+size_t copy_in_user_mvcos(size_t size, void __user *to, const void __user *from)
+{
+ register unsigned long reg0 asm("0") = 0x810081UL;
+ unsigned long tmp1, tmp2;
+
+ tmp1 = -4096UL;
+ /* FIXME: copy with reduced length. */
+ asm volatile(
+ "0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
+ " jz 2f\n"
+ "1:"ALR" %0,%3\n"
+ " "SLR" %1,%3\n"
+ " "SLR" %2,%3\n"
+ " j 0b\n"
+ "2:"SLR" %0,%0\n"
+ "3: \n"
+ EX_TABLE(0b,3b)
+ : "+a" (size), "+a" (to), "+a" (from), "+a" (tmp1), "=a" (tmp2)
+ : "d" (reg0) : "cc", "memory");
+ return size;
+}
+
+size_t clear_user_mvcos(size_t size, void __user *to)
+{
+ register unsigned long reg0 asm("0") = 0x810000UL;
+ unsigned long tmp1, tmp2;
+
+ tmp1 = -4096UL;
+ asm volatile(
+ "0: .insn ss,0xc80000000000,0(%0,%1),0(%4),0\n"
+ " jz 4f\n"
+ "1:"ALR" %0,%2\n"
+ " "SLR" %1,%2\n"
+ " j 0b\n"
+ "2: la %3,4095(%1)\n"/* %4 = to + 4095 */
+ " nr %3,%2\n" /* %4 = (to + 4095) & -4096 */
+ " "SLR" %3,%1\n"
+ " "CLR" %0,%3\n" /* copy crosses next page boundary? */
+ " jnh 5f\n"
+ "3: .insn ss,0xc80000000000,0(%3,%1),0(%4),0\n"
+ " "SLR" %0,%3\n"
+ " j 5f\n"
+ "4:"SLR" %0,%0\n"
+ "5: \n"
+ EX_TABLE(0b,2b) EX_TABLE(3b,5b)
+ : "+a" (size), "+a" (to), "+a" (tmp1), "=a" (tmp2)
+ : "a" (empty_zero_page), "d" (reg0) : "cc", "memory");
+ return size;
+}
+
+extern size_t copy_from_user_std_small(size_t, const void __user *, void *);
+extern size_t copy_to_user_std_small(size_t, void __user *, const void *);
+extern size_t strnlen_user_std(size_t, const char __user *);
+extern size_t strncpy_from_user_std(size_t, const char __user *, char *);
+extern int futex_atomic_op(int, int __user *, int, int *);
+extern int futex_atomic_cmpxchg(int __user *, int, int);
+
+struct uaccess_ops uaccess_mvcos = {
+ .copy_from_user = copy_from_user_mvcos,
+ .copy_from_user_small = copy_from_user_std_small,
+ .copy_to_user = copy_to_user_mvcos,
+ .copy_to_user_small = copy_to_user_std_small,
+ .copy_in_user = copy_in_user_mvcos,
+ .clear_user = clear_user_mvcos,
+ .strnlen_user = strnlen_user_std,
+ .strncpy_from_user = strncpy_from_user_std,
+ .futex_atomic_op = futex_atomic_op,
+ .futex_atomic_cmpxchg = futex_atomic_cmpxchg,
+};
--- /dev/null
+/*
+ * arch/s390/lib/uaccess_std.c
+ *
+ * Standard user space access functions based on mvcp/mvcs and doing
+ * interesting things in the secondary space mode.
+ *
+ * Copyright (C) IBM Corp. 2006
+ * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
+ * Gerald Schaefer (gerald.schaefer@de.ibm.com)
+ */
+
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <asm/uaccess.h>
+#include <asm/futex.h>
+
+#ifndef __s390x__
+#define AHI "ahi"
+#define ALR "alr"
+#define CLR "clr"
+#define LHI "lhi"
+#define SLR "slr"
+#else
+#define AHI "aghi"
+#define ALR "algr"
+#define CLR "clgr"
+#define LHI "lghi"
+#define SLR "slgr"
+#endif
+
+size_t copy_from_user_std(size_t size, const void __user *ptr, void *x)
+{
+ unsigned long tmp1, tmp2;
+
+ tmp1 = -256UL;
+ asm volatile(
+ "0: mvcp 0(%0,%2),0(%1),%3\n"
+ " jz 5f\n"
+ "1:"ALR" %0,%3\n"
+ " la %1,256(%1)\n"
+ " la %2,256(%2)\n"
+ "2: mvcp 0(%0,%2),0(%1),%3\n"
+ " jnz 1b\n"
+ " j 5f\n"
+ "3: la %4,255(%1)\n" /* %4 = ptr + 255 */
+ " "LHI" %3,-4096\n"
+ " nr %4,%3\n" /* %4 = (ptr + 255) & -4096 */
+ " "SLR" %4,%1\n"
+ " "CLR" %0,%4\n" /* copy crosses next page boundary? */
+ " jnh 6f\n"
+ "4: mvcp 0(%4,%2),0(%1),%3\n"
+ " "SLR" %0,%4\n"
+ " j 6f\n"
+ "5:"SLR" %0,%0\n"
+ "6: \n"
+ EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,6b)
+ : "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+ : : "cc", "memory");
+ return size;
+}
+
+size_t copy_from_user_std_small(size_t size, const void __user *ptr, void *x)
+{
+ unsigned long tmp1, tmp2;
+
+ tmp1 = 0UL;
+ asm volatile(
+ "0: mvcp 0(%0,%2),0(%1),%3\n"
+ " "SLR" %0,%0\n"
+ " j 3f\n"
+ "1: la %4,255(%1)\n" /* %4 = ptr + 255 */
+ " "LHI" %3,-4096\n"
+ " nr %4,%3\n" /* %4 = (ptr + 255) & -4096 */
+ " "SLR" %4,%1\n"
+ " "CLR" %0,%4\n" /* copy crosses next page boundary? */
+ " jnh 3f\n"
+ "2: mvcp 0(%4,%2),0(%1),%3\n"
+ " "SLR" %0,%4\n"
+ "3:\n"
+ EX_TABLE(0b,1b) EX_TABLE(2b,3b)
+ : "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+ : : "cc", "memory");
+ return size;
+}
+
+size_t copy_to_user_std(size_t size, void __user *ptr, const void *x)
+{
+ unsigned long tmp1, tmp2;
+
+ tmp1 = -256UL;
+ asm volatile(
+ "0: mvcs 0(%0,%1),0(%2),%3\n"
+ " jz 5f\n"
+ "1:"ALR" %0,%3\n"
+ " la %1,256(%1)\n"
+ " la %2,256(%2)\n"
+ "2: mvcs 0(%0,%1),0(%2),%3\n"
+ " jnz 1b\n"
+ " j 5f\n"
+ "3: la %4,255(%1)\n" /* %4 = ptr + 255 */
+ " "LHI" %3,-4096\n"
+ " nr %4,%3\n" /* %4 = (ptr + 255) & -4096 */
+ " "SLR" %4,%1\n"
+ " "CLR" %0,%4\n" /* copy crosses next page boundary? */
+ " jnh 6f\n"
+ "4: mvcs 0(%4,%1),0(%2),%3\n"
+ " "SLR" %0,%4\n"
+ " j 6f\n"
+ "5:"SLR" %0,%0\n"
+ "6: \n"
+ EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,6b)
+ : "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+ : : "cc", "memory");
+ return size;
+}
+
+size_t copy_to_user_std_small(size_t size, void __user *ptr, const void *x)
+{
+ unsigned long tmp1, tmp2;
+
+ tmp1 = 0UL;
+ asm volatile(
+ "0: mvcs 0(%0,%1),0(%2),%3\n"
+ " "SLR" %0,%0\n"
+ " j 3f\n"
+ "1: la %4,255(%1)\n" /* ptr + 255 */
+ " "LHI" %3,-4096\n"
+ " nr %4,%3\n" /* (ptr + 255) & -4096UL */
+ " "SLR" %4,%1\n"
+ " "CLR" %0,%4\n" /* copy crosses next page boundary? */
+ " jnh 3f\n"
+ "2: mvcs 0(%4,%1),0(%2),%3\n"
+ " "SLR" %0,%4\n"
+ "3:\n"
+ EX_TABLE(0b,1b) EX_TABLE(2b,3b)
+ : "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
+ : : "cc", "memory");
+ return size;
+}
+
+size_t copy_in_user_std(size_t size, void __user *to, const void __user *from)
+{
+ unsigned long tmp1;
+
+ asm volatile(
+ " "AHI" %0,-1\n"
+ " jo 5f\n"
+ " sacf 256\n"
+ " bras %3,3f\n"
+ "0:"AHI" %0,257\n"
+ "1: mvc 0(1,%1),0(%2)\n"
+ " la %1,1(%1)\n"
+ " la %2,1(%2)\n"
+ " "AHI" %0,-1\n"
+ " jnz 1b\n"
+ " j 5f\n"
+ "2: mvc 0(256,%1),0(%2)\n"
+ " la %1,256(%1)\n"
+ " la %2,256(%2)\n"
+ "3:"AHI" %0,-256\n"
+ " jnm 2b\n"
+ "4: ex %0,1b-0b(%3)\n"
+ " sacf 0\n"
+ "5: "SLR" %0,%0\n"
+ "6:\n"
+ EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b)
+ : "+a" (size), "+a" (to), "+a" (from), "=a" (tmp1)
+ : : "cc", "memory");
+ return size;
+}
+
+size_t clear_user_std(size_t size, void __user *to)
+{
+ unsigned long tmp1, tmp2;
+
+ asm volatile(
+ " "AHI" %0,-1\n"
+ " jo 5f\n"
+ " sacf 256\n"
+ " bras %3,3f\n"
+ " xc 0(1,%1),0(%1)\n"
+ "0:"AHI" %0,257\n"
+ " la %2,255(%1)\n" /* %2 = ptr + 255 */
+ " srl %2,12\n"
+ " sll %2,12\n" /* %2 = (ptr + 255) & -4096 */
+ " "SLR" %2,%1\n"
+ " "CLR" %0,%2\n" /* clear crosses next page boundary? */
+ " jnh 5f\n"
+ " "AHI" %2,-1\n"
+ "1: ex %2,0(%3)\n"
+ " "AHI" %2,1\n"
+ " "SLR" %0,%2\n"
+ " j 5f\n"
+ "2: xc 0(256,%1),0(%1)\n"
+ " la %1,256(%1)\n"
+ "3:"AHI" %0,-256\n"
+ " jnm 2b\n"
+ "4: ex %0,0(%3)\n"
+ " sacf 0\n"
+ "5: "SLR" %0,%0\n"
+ "6:\n"
+ EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b)
+ : "+a" (size), "+a" (to), "=a" (tmp1), "=a" (tmp2)
+ : : "cc", "memory");
+ return size;
+}
+
+size_t strnlen_user_std(size_t size, const char __user *src)
+{
+ register unsigned long reg0 asm("0") = 0UL;
+ unsigned long tmp1, tmp2;
+
+ asm volatile(
+ " la %2,0(%1)\n"
+ " la %3,0(%0,%1)\n"
+ " "SLR" %0,%0\n"
+ " sacf 256\n"
+ "0: srst %3,%2\n"
+ " jo 0b\n"
+ " la %0,1(%3)\n" /* strnlen_user results includes \0 */
+ " "SLR" %0,%1\n"
+ "1: sacf 0\n"
+ EX_TABLE(0b,1b)
+ : "+a" (size), "+a" (src), "=a" (tmp1), "=a" (tmp2)
+ : "d" (reg0) : "cc", "memory");
+ return size;
+}
+
+size_t strncpy_from_user_std(size_t size, const char __user *src, char *dst)
+{
+ register unsigned long reg0 asm("0") = 0UL;
+ unsigned long tmp1, tmp2;
+
+ asm volatile(
+ " la %3,0(%1)\n"
+ " la %4,0(%0,%1)\n"
+ " sacf 256\n"
+ "0: srst %4,%3\n"
+ " jo 0b\n"
+ " sacf 0\n"
+ " la %0,0(%4)\n"
+ " jh 1f\n" /* found \0 in string ? */
+ " "AHI" %4,1\n" /* include \0 in copy */
+ "1:"SLR" %0,%1\n" /* %0 = return length (without \0) */
+ " "SLR" %4,%1\n" /* %4 = copy length (including \0) */
+ "2: mvcp 0(%4,%2),0(%1),%5\n"
+ " jz 9f\n"
+ "3:"AHI" %4,-256\n"
+ " la %1,256(%1)\n"
+ " la %2,256(%2)\n"
+ "4: mvcp 0(%4,%2),0(%1),%5\n"
+ " jnz 3b\n"
+ " j 9f\n"
+ "7: sacf 0\n"
+ "8:"LHI" %0,%6\n"
+ "9:\n"
+ EX_TABLE(0b,7b) EX_TABLE(2b,8b) EX_TABLE(4b,8b)
+ : "+a" (size), "+a" (src), "+d" (dst), "=a" (tmp1), "=a" (tmp2)
+ : "d" (reg0), "K" (-EFAULT) : "cc", "memory");
+ return size;
+}
+
+#define __futex_atomic_op(insn, ret, oldval, newval, uaddr, oparg) \
+ asm volatile( \
+ " sacf 256\n" \
+ "0: l %1,0(%6)\n" \
+ "1:"insn \
+ "2: cs %1,%2,0(%6)\n" \
+ "3: jl 1b\n" \
+ " lhi %0,0\n" \
+ "4: sacf 0\n" \
+ EX_TABLE(0b,4b) EX_TABLE(2b,4b) EX_TABLE(3b,4b) \
+ : "=d" (ret), "=&d" (oldval), "=&d" (newval), \
+ "=m" (*uaddr) \
+ : "0" (-EFAULT), "d" (oparg), "a" (uaddr), \
+ "m" (*uaddr) : "cc");
+
+int futex_atomic_op(int op, int __user *uaddr, int oparg, int *old)
+{
+ int oldval = 0, newval, ret;
+
+ inc_preempt_count();
+
+ switch (op) {
+ case FUTEX_OP_SET:
+ __futex_atomic_op("lr %2,%5\n",
+ ret, oldval, newval, uaddr, oparg);
+ break;
+ case FUTEX_OP_ADD:
+ __futex_atomic_op("lr %2,%1\nar %2,%5\n",
+ ret, oldval, newval, uaddr, oparg);
+ break;
+ case FUTEX_OP_OR:
+ __futex_atomic_op("lr %2,%1\nor %2,%5\n",
+ ret, oldval, newval, uaddr, oparg);
+ break;
+ case FUTEX_OP_ANDN:
+ __futex_atomic_op("lr %2,%1\nnr %2,%5\n",
+ ret, oldval, newval, uaddr, oparg);
+ break;
+ case FUTEX_OP_XOR:
+ __futex_atomic_op("lr %2,%1\nxr %2,%5\n",
+ ret, oldval, newval, uaddr, oparg);
+ break;
+ default:
+ ret = -ENOSYS;
+ }
+ dec_preempt_count();
+ *old = oldval;
+ return ret;
+}
+
+int futex_atomic_cmpxchg(int __user *uaddr, int oldval, int newval)
+{
+ int ret;
+
+ asm volatile(
+ " sacf 256\n"
+ " cs %1,%4,0(%5)\n"
+ "0: lr %0,%1\n"
+ "1: sacf 0\n"
+ EX_TABLE(0b,1b)
+ : "=d" (ret), "+d" (oldval), "=m" (*uaddr)
+ : "0" (-EFAULT), "d" (newval), "a" (uaddr), "m" (*uaddr)
+ : "cc", "memory" );
+ return ret;
+}
+
+struct uaccess_ops uaccess_std = {
+ .copy_from_user = copy_from_user_std,
+ .copy_from_user_small = copy_from_user_std_small,
+ .copy_to_user = copy_to_user_std,
+ .copy_to_user_small = copy_to_user_std_small,
+ .copy_in_user = copy_in_user_std,
+ .clear_user = clear_user_std,
+ .strnlen_user = strnlen_user_std,
+ .strncpy_from_user = strncpy_from_user_std,
+ .futex_atomic_op = futex_atomic_op,
+ .futex_atomic_cmpxchg = futex_atomic_cmpxchg,
+};
static void cmm_timer_fn(unsigned long);
static void cmm_set_timer(void);
-static long
-cmm_strtoul(const char *cp, char **endp)
-{
- unsigned int base = 10;
-
- if (*cp == '0') {
- base = 8;
- cp++;
- if ((*cp == 'x' || *cp == 'X') && isxdigit(cp[1])) {
- base = 16;
- cp++;
- }
- }
- return simple_strtoul(cp, endp, base);
-}
-
static long
cmm_alloc_pages(long pages, long *counter, struct cmm_page_array **list)
{
return -EFAULT;
buf[sizeof(buf) - 1] = '\0';
cmm_skip_blanks(buf, &p);
- pages = cmm_strtoul(p, &p);
+ pages = simple_strtoul(p, &p, 0);
if (ctl == &cmm_table[0])
cmm_set_pages(pages);
else
return -EFAULT;
buf[sizeof(buf) - 1] = '\0';
cmm_skip_blanks(buf, &p);
- pages = cmm_strtoul(p, &p);
+ pages = simple_strtoul(p, &p, 0);
cmm_skip_blanks(p, &p);
- seconds = cmm_strtoul(p, &p);
+ seconds = simple_strtoul(p, &p, 0);
cmm_set_timeout(pages, seconds);
} else {
len = sprintf(buf, "%ld %ld\n",
if (strncmp(msg, "SHRINK", 6) == 0) {
if (!cmm_skip_blanks(msg + 6, &msg))
return;
- pages = cmm_strtoul(msg, &msg);
+ pages = simple_strtoul(msg, &msg, 0);
cmm_skip_blanks(msg, &msg);
if (*msg == '\0')
cmm_set_pages(pages);
} else if (strncmp(msg, "RELEASE", 7) == 0) {
if (!cmm_skip_blanks(msg + 7, &msg))
return;
- pages = cmm_strtoul(msg, &msg);
+ pages = simple_strtoul(msg, &msg, 0);
cmm_skip_blanks(msg, &msg);
if (*msg == '\0')
cmm_add_timed_pages(pages);
} else if (strncmp(msg, "REUSE", 5) == 0) {
if (!cmm_skip_blanks(msg + 5, &msg))
return;
- pages = cmm_strtoul(msg, &msg);
+ pages = simple_strtoul(msg, &msg, 0);
if (!cmm_skip_blanks(msg, &msg))
return;
- seconds = cmm_strtoul(msg, &msg);
+ seconds = simple_strtoul(msg, &msg, 0);
cmm_skip_blanks(msg, &msg);
if (*msg == '\0')
cmm_set_timeout(pages, seconds);
#include <linux/console.h>
#include <linux/module.h>
#include <linux/hardirq.h>
+#include <linux/kprobes.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
+#include <asm/kdebug.h>
#ifndef CONFIG_64BIT
#define __FAIL_ADDR_MASK 0x7ffff000
extern void die(const char *,struct pt_regs *,long);
+#ifdef CONFIG_KPROBES
+ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
+int register_page_fault_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_register(¬ify_page_fault_chain, nb);
+}
+
+int unregister_page_fault_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_unregister(¬ify_page_fault_chain, nb);
+}
+
+static inline int notify_page_fault(enum die_val val, const char *str,
+ struct pt_regs *regs, long err, int trap, int sig)
+{
+ struct die_args args = {
+ .regs = regs,
+ .str = str,
+ .err = err,
+ .trapnr = trap,
+ .signr = sig
+ };
+ return atomic_notifier_call_chain(¬ify_page_fault_chain, val, &args);
+}
+#else
+static inline int notify_page_fault(enum die_val val, const char *str,
+ struct pt_regs *regs, long err, int trap, int sig)
+{
+ return NOTIFY_DONE;
+}
+#endif
+
extern spinlock_t timerlist_lock;
/*
* 11 Page translation -> Not present (nullification)
* 3b Region third trans. -> Not present (nullification)
*/
-static inline void
+static inline void __kprobes
do_exception(struct pt_regs *regs, unsigned long error_code, int is_protection)
{
struct task_struct *tsk;
tsk = current;
mm = tsk->mm;
+ if (notify_page_fault(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
+ SIGSEGV) == NOTIFY_STOP)
+ return;
+
/*
* Check for low-address protection. This needs to be treated
* as a special case because the translation exception code
unsigned long pgdir_k = (__pa(swapper_pg_dir) & PAGE_MASK) | _KERNSEG_TABLE;
static const int ssm_mask = 0x04000000L;
unsigned long ro_start_pfn, ro_end_pfn;
+ unsigned long zones_size[MAX_NR_ZONES];
ro_start_pfn = PFN_DOWN((unsigned long)&__start_rodata);
ro_end_pfn = PFN_UP((unsigned long)&__end_rodata);
+ memset(zones_size, 0, sizeof(zones_size));
+ zones_size[ZONE_DMA] = max_low_pfn;
+ free_area_init_node(0, &contig_page_data, zones_size,
+ __pa(PAGE_OFFSET) >> PAGE_SHIFT,
+ zholes_size);
+
/* unmap whole virtual address space */
pg_dir = swapper_pg_dir;
- for (i=0;i<KERNEL_PGD_PTRS;i++)
- pmd_clear((pmd_t*)pg_dir++);
+ for (i = 0; i < PTRS_PER_PGD; i++)
+ pmd_clear((pmd_t *) pg_dir++);
/*
* map whole physical memory to virtual memory (identity mapping)
*/
pg_table = (pte_t *) alloc_bootmem_pages(PAGE_SIZE);
- pg_dir->pgd0 = (_PAGE_TABLE | __pa(pg_table));
- pg_dir->pgd1 = (_PAGE_TABLE | (__pa(pg_table)+1024));
- pg_dir->pgd2 = (_PAGE_TABLE | (__pa(pg_table)+2048));
- pg_dir->pgd3 = (_PAGE_TABLE | (__pa(pg_table)+3072));
+ pmd_populate_kernel(&init_mm, (pmd_t *) pg_dir, pg_table);
pg_dir++;
for (tmp = 0 ; tmp < PTRS_PER_PTE ; tmp++,pg_table++) {
else
pte = pfn_pte(pfn, PAGE_KERNEL);
if (pfn >= max_low_pfn)
- pte_clear(&init_mm, 0, &pte);
- set_pte(pg_table, pte);
+ pte_val(pte) = _PAGE_TYPE_EMPTY;
+ set_pte(pg_table, pte);
pfn++;
}
}
: : "m" (pgdir_k), "m" (ssm_mask));
local_flush_tlb();
-
- {
- unsigned long zones_size[MAX_NR_ZONES];
-
- memset(zones_size, 0, sizeof(zones_size));
- zones_size[ZONE_DMA] = max_low_pfn;
- free_area_init_node(0, &contig_page_data, zones_size,
- __pa(PAGE_OFFSET) >> PAGE_SHIFT,
- zholes_size);
- }
return;
}
pte = pfn_pte(pfn, __pgprot(_PAGE_RO));
else
pte = pfn_pte(pfn, PAGE_KERNEL);
- if (pfn >= max_low_pfn) {
- pte_clear(&init_mm, 0, &pte);
- continue;
- }
+ if (pfn >= max_low_pfn)
+ pte_val(pte) = _PAGE_TYPE_EMPTY;
set_pte(pt_dir, pte);
pfn++;
}
/*
* hypervisor.c - /sys/hypervisor subsystem.
*
- * This file is released under the GPLv2
+ * Copyright (C) IBM Corp. 2006
*
+ * This file is released under the GPLv2
*/
#include <linux/kobject.h>
help
Character device driver for reading z/VM monitor service records
+config MONWRITER
+ tristate "API for writing z/VM monitor service records"
+ default "m"
+ help
+ Character device driver for writing z/VM monitor service records
+
endmenu
menu "Cryptographic devices"
-config Z90CRYPT
+config ZCRYPT
tristate "Support for PCI-attached cryptographic adapters"
- default "m"
- help
+ select ZCRYPT_MONOLITHIC if ZCRYPT="y"
+ default "m"
+ help
Select this option if you want to use a PCI-attached cryptographic
- adapter like the PCI Cryptographic Accelerator (PCICA) or the PCI
- Cryptographic Coprocessor (PCICC). This option is also available
- as a module called z90crypt.ko.
+ adapter like:
+ + PCI Cryptographic Accelerator (PCICA)
+ + PCI Cryptographic Coprocessor (PCICC)
+ + PCI-X Cryptographic Coprocessor (PCIXCC)
+ + Crypto Express2 Coprocessor (CEX2C)
+ + Crypto Express2 Accelerator (CEX2A)
+
+config ZCRYPT_MONOLITHIC
+ bool "Monolithic zcrypt module"
+ depends on ZCRYPT="m"
+ help
+ Select this option if you want to have a single module z90crypt.ko
+ that contains all parts of the crypto device driver (ap bus,
+ request router and all the card drivers).
endmenu
device->debug_area = debug_register(device->cdev->dev.bus_id, 1, 2,
8 * sizeof (long));
debug_register_view(device->debug_area, &debug_sprintf_view);
- debug_set_level(device->debug_area, DBF_EMERG);
+ debug_set_level(device->debug_area, DBF_WARNING);
DBF_DEV_EVENT(DBF_EMERG, device, "%s", "debug area created");
device->state = DASD_STATE_BASIC;
device = (struct dasd_device *) cqr->device;
if (device == NULL ||
- device != dasd_device_from_cdev(cdev) ||
+ device != dasd_device_from_cdev_locked(cdev) ||
strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) {
MESSAGE(KERN_DEBUG, "invalid device in request: bus_id %s",
cdev->dev.bus_id);
/* first of all check for state change pending interrupt */
mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP;
if ((irb->scsw.dstat & mask) == mask) {
- device = dasd_device_from_cdev(cdev);
+ device = dasd_device_from_cdev_locked(cdev);
if (!IS_ERR(device)) {
dasd_handle_state_change_pending(device);
dasd_put_device(device);
goto failed;
}
debug_register_view(dasd_debug_area, &debug_sprintf_view);
- debug_set_level(dasd_debug_area, DBF_EMERG);
+ debug_set_level(dasd_debug_area, DBF_WARNING);
DBF_EVENT(DBF_EMERG, "%s", "debug area created");
return residual_str;
}
if (strncmp("nopav", parsestring, length) == 0) {
- dasd_nopav = 1;
- MESSAGE(KERN_INFO, "%s", "disable PAV mode");
+ if (MACHINE_IS_VM)
+ MESSAGE(KERN_INFO, "%s", "'nopav' not supported on VM");
+ else {
+ dasd_nopav = 1;
+ MESSAGE(KERN_INFO, "%s", "disable PAV mode");
+ }
return residual_str;
}
if (strncmp("fixedbuffers", parsestring, length) == 0) {
{
struct dasd_devmap *devmap;
struct dasd_device *device;
+ unsigned long flags;
int rc;
devmap = dasd_devmap_from_cdev(cdev);
if (IS_ERR(devmap))
return (void *) devmap;
- cdev->dev.driver_data = devmap;
device = dasd_alloc_device();
if (IS_ERR(device))
return device;
- atomic_set(&device->ref_count, 2);
+ atomic_set(&device->ref_count, 3);
spin_lock(&dasd_devmap_lock);
if (!devmap->device) {
dasd_free_device(device);
return ERR_PTR(rc);
}
+
+ spin_lock_irqsave(get_ccwdev_lock(cdev), flags);
+ cdev->dev.driver_data = device;
+ spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
+
return device;
}
{
struct ccw_device *cdev;
struct dasd_devmap *devmap;
+ unsigned long flags;
/* First remove device pointer from devmap. */
devmap = dasd_find_busid(device->cdev->dev.bus_id);
devmap->device = NULL;
spin_unlock(&dasd_devmap_lock);
- /* Drop ref_count by 2, one for the devmap reference and
- * one for the passed reference. */
- atomic_sub(2, &device->ref_count);
+ /* Disconnect dasd_device structure from ccw_device structure. */
+ spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
+ device->cdev->dev.driver_data = NULL;
+ spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
+
+ /*
+ * Drop ref_count by 3, one for the devmap reference, one for
+ * the cdev reference and one for the passed reference.
+ */
+ atomic_sub(3, &device->ref_count);
/* Wait for reference counter to drop to zero. */
wait_event(dasd_delete_wq, atomic_read(&device->ref_count) == 0);
cdev = device->cdev;
device->cdev = NULL;
- /* Disconnect dasd_devmap structure from ccw_device structure. */
- cdev->dev.driver_data = NULL;
-
/* Put ccw_device structure. */
put_device(&cdev->dev);
wake_up(&dasd_delete_wq);
}
+/*
+ * Return dasd_device structure associated with cdev.
+ * This function needs to be called with the ccw device
+ * lock held. It can be used from interrupt context.
+ */
+struct dasd_device *
+dasd_device_from_cdev_locked(struct ccw_device *cdev)
+{
+ struct dasd_device *device = cdev->dev.driver_data;
+
+ if (!device)
+ return ERR_PTR(-ENODEV);
+ dasd_get_device(device);
+ return device;
+}
+
/*
* Return dasd_device structure associated with cdev.
*/
struct dasd_device *
dasd_device_from_cdev(struct ccw_device *cdev)
{
- struct dasd_devmap *devmap;
struct dasd_device *device;
+ unsigned long flags;
- device = ERR_PTR(-ENODEV);
- spin_lock(&dasd_devmap_lock);
- devmap = cdev->dev.driver_data;
- if (devmap && devmap->device) {
- device = devmap->device;
- dasd_get_device(device);
- }
- spin_unlock(&dasd_devmap_lock);
+ spin_lock_irqsave(get_ccwdev_lock(cdev), flags);
+ device = dasd_device_from_cdev_locked(cdev);
+ spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
return device;
}
dasd_discipline_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct dasd_devmap *devmap;
- char *dname;
+ struct dasd_device *device;
+ ssize_t len;
- spin_lock(&dasd_devmap_lock);
- dname = "none";
- devmap = dev->driver_data;
- if (devmap && devmap->device && devmap->device->discipline)
- dname = devmap->device->discipline->name;
- spin_unlock(&dasd_devmap_lock);
- return snprintf(buf, PAGE_SIZE, "%s\n", dname);
+ device = dasd_device_from_cdev(to_ccwdev(dev));
+ if (!IS_ERR(device) && device->discipline) {
+ len = snprintf(buf, PAGE_SIZE, "%s\n",
+ device->discipline->name);
+ dasd_put_device(device);
+ } else
+ len = snprintf(buf, PAGE_SIZE, "none\n");
+ return len;
}
static DEVICE_ATTR(discipline, 0444, dasd_discipline_show, NULL);
return 0;
}
-void __exit dasd_eer_exit(void)
+void dasd_eer_exit(void)
{
WARN_ON(misc_deregister(&dasd_eer_dev) != 0);
}
void dasd_remove_sysfs_files(struct ccw_device *);
struct dasd_device *dasd_device_from_cdev(struct ccw_device *);
+struct dasd_device *dasd_device_from_cdev_locked(struct ccw_device *);
struct dasd_device *dasd_device_from_devindex(int);
int dasd_parse(void);
PRINT_WARN("No expanded memory available\n");
return -ENODEV;
}
- xpram_pages = xpram_highest_page_index();
+ xpram_pages = xpram_highest_page_index() + 1;
PRINT_INFO(" %u pages expanded memory found (%lu KB).\n",
xpram_pages, (unsigned long) xpram_pages*4);
rc = xpram_setup_sizes(xpram_pages);
obj-$(CONFIG_S390_TAPE_34XX) += tape_34xx.o
obj-$(CONFIG_S390_TAPE_3590) += tape_3590.o
obj-$(CONFIG_MONREADER) += monreader.o
+obj-$(CONFIG_MONWRITER) += monwriter.o
--- /dev/null
+/*
+ * drivers/s390/char/monwriter.c
+ *
+ * Character device driver for writing z/VM *MONITOR service records.
+ *
+ * Copyright (C) IBM Corp. 2006
+ *
+ * Author(s): Melissa Howland <Melissa.Howland@us.ibm.com>
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/miscdevice.h>
+#include <linux/ctype.h>
+#include <linux/poll.h>
+#include <asm/uaccess.h>
+#include <asm/ebcdic.h>
+#include <asm/io.h>
+#include <asm/appldata.h>
+#include <asm/monwriter.h>
+
+#define MONWRITE_MAX_DATALEN 4024
+
+static int mon_max_bufs = 255;
+
+struct mon_buf {
+ struct list_head list;
+ struct monwrite_hdr hdr;
+ int diag_done;
+ char *data;
+};
+
+struct mon_private {
+ struct list_head list;
+ struct monwrite_hdr hdr;
+ size_t hdr_to_read;
+ size_t data_to_read;
+ struct mon_buf *current_buf;
+ int mon_buf_count;
+};
+
+/*
+ * helper functions
+ */
+
+static int monwrite_diag(struct monwrite_hdr *myhdr, char *buffer, int fcn)
+{
+ struct appldata_product_id id;
+ int rc;
+
+ strcpy(id.prod_nr, "LNXAPPL");
+ id.prod_fn = myhdr->applid;
+ id.record_nr = myhdr->record_num;
+ id.version_nr = myhdr->version;
+ id.release_nr = myhdr->release;
+ id.mod_lvl = myhdr->mod_level;
+ rc = appldata_asm(&id, fcn, (void *) buffer, myhdr->datalen);
+ if (rc <= 0)
+ return rc;
+ if (rc == 5)
+ return -EPERM;
+ printk("DIAG X'DC' error with return code: %i\n", rc);
+ return -EINVAL;
+}
+
+static inline struct mon_buf *monwrite_find_hdr(struct mon_private *monpriv,
+ struct monwrite_hdr *monhdr)
+{
+ struct mon_buf *entry, *next;
+
+ list_for_each_entry_safe(entry, next, &monpriv->list, list)
+ if (entry->hdr.applid == monhdr->applid &&
+ entry->hdr.record_num == monhdr->record_num &&
+ entry->hdr.version == monhdr->version &&
+ entry->hdr.release == monhdr->release &&
+ entry->hdr.mod_level == monhdr->mod_level)
+ return entry;
+ return NULL;
+}
+
+static int monwrite_new_hdr(struct mon_private *monpriv)
+{
+ struct monwrite_hdr *monhdr = &monpriv->hdr;
+ struct mon_buf *monbuf;
+ int rc;
+
+ if (monhdr->datalen > MONWRITE_MAX_DATALEN ||
+ monhdr->mon_function > MONWRITE_START_CONFIG ||
+ monhdr->hdrlen != sizeof(struct monwrite_hdr))
+ return -EINVAL;
+ monbuf = monwrite_find_hdr(monpriv, monhdr);
+ if (monbuf) {
+ if (monhdr->mon_function == MONWRITE_STOP_INTERVAL) {
+ monhdr->datalen = monbuf->hdr.datalen;
+ rc = monwrite_diag(monhdr, monbuf->data,
+ APPLDATA_STOP_REC);
+ list_del(&monbuf->list);
+ monpriv->mon_buf_count--;
+ kfree(monbuf->data);
+ kfree(monbuf);
+ monbuf = NULL;
+ }
+ } else {
+ if (monpriv->mon_buf_count >= mon_max_bufs)
+ return -ENOSPC;
+ monbuf = kzalloc(sizeof(struct mon_buf), GFP_KERNEL);
+ if (!monbuf)
+ return -ENOMEM;
+ monbuf->data = kzalloc(monbuf->hdr.datalen,
+ GFP_KERNEL | GFP_DMA);
+ if (!monbuf->data) {
+ kfree(monbuf);
+ return -ENOMEM;
+ }
+ monbuf->hdr = *monhdr;
+ list_add_tail(&monbuf->list, &monpriv->list);
+ monpriv->mon_buf_count++;
+ }
+ monpriv->current_buf = monbuf;
+ return 0;
+}
+
+static int monwrite_new_data(struct mon_private *monpriv)
+{
+ struct monwrite_hdr *monhdr = &monpriv->hdr;
+ struct mon_buf *monbuf = monpriv->current_buf;
+ int rc = 0;
+
+ switch (monhdr->mon_function) {
+ case MONWRITE_START_INTERVAL:
+ if (!monbuf->diag_done) {
+ rc = monwrite_diag(monhdr, monbuf->data,
+ APPLDATA_START_INTERVAL_REC);
+ monbuf->diag_done = 1;
+ }
+ break;
+ case MONWRITE_START_CONFIG:
+ if (!monbuf->diag_done) {
+ rc = monwrite_diag(monhdr, monbuf->data,
+ APPLDATA_START_CONFIG_REC);
+ monbuf->diag_done = 1;
+ }
+ break;
+ case MONWRITE_GEN_EVENT:
+ rc = monwrite_diag(monhdr, monbuf->data,
+ APPLDATA_GEN_EVENT_REC);
+ list_del(&monpriv->current_buf->list);
+ kfree(monpriv->current_buf->data);
+ kfree(monpriv->current_buf);
+ monpriv->current_buf = NULL;
+ break;
+ default:
+ /* monhdr->mon_function is checked in monwrite_new_hdr */
+ BUG();
+ }
+ return rc;
+}
+
+/*
+ * file operations
+ */
+
+static int monwrite_open(struct inode *inode, struct file *filp)
+{
+ struct mon_private *monpriv;
+
+ monpriv = kzalloc(sizeof(struct mon_private), GFP_KERNEL);
+ if (!monpriv)
+ return -ENOMEM;
+ INIT_LIST_HEAD(&monpriv->list);
+ monpriv->hdr_to_read = sizeof(monpriv->hdr);
+ filp->private_data = monpriv;
+ return nonseekable_open(inode, filp);
+}
+
+static int monwrite_close(struct inode *inode, struct file *filp)
+{
+ struct mon_private *monpriv = filp->private_data;
+ struct mon_buf *entry, *next;
+
+ list_for_each_entry_safe(entry, next, &monpriv->list, list) {
+ if (entry->hdr.mon_function != MONWRITE_GEN_EVENT)
+ monwrite_diag(&entry->hdr, entry->data,
+ APPLDATA_STOP_REC);
+ monpriv->mon_buf_count--;
+ list_del(&entry->list);
+ kfree(entry->data);
+ kfree(entry);
+ }
+ kfree(monpriv);
+ return 0;
+}
+
+static ssize_t monwrite_write(struct file *filp, const char __user *data,
+ size_t count, loff_t *ppos)
+{
+ struct mon_private *monpriv = filp->private_data;
+ size_t len, written;
+ void *to;
+ int rc;
+
+ for (written = 0; written < count; ) {
+ if (monpriv->hdr_to_read) {
+ len = min(count - written, monpriv->hdr_to_read);
+ to = (char *) &monpriv->hdr +
+ sizeof(monpriv->hdr) - monpriv->hdr_to_read;
+ if (copy_from_user(to, data + written, len)) {
+ rc = -EFAULT;
+ goto out_error;
+ }
+ monpriv->hdr_to_read -= len;
+ written += len;
+ if (monpriv->hdr_to_read > 0)
+ continue;
+ rc = monwrite_new_hdr(monpriv);
+ if (rc)
+ goto out_error;
+ monpriv->data_to_read = monpriv->current_buf ?
+ monpriv->current_buf->hdr.datalen : 0;
+ }
+
+ if (monpriv->data_to_read) {
+ len = min(count - written, monpriv->data_to_read);
+ to = monpriv->current_buf->data +
+ monpriv->hdr.datalen - monpriv->data_to_read;
+ if (copy_from_user(to, data + written, len)) {
+ rc = -EFAULT;
+ goto out_error;
+ }
+ monpriv->data_to_read -= len;
+ written += len;
+ if (monpriv->data_to_read > 0)
+ continue;
+ rc = monwrite_new_data(monpriv);
+ if (rc)
+ goto out_error;
+ }
+ monpriv->hdr_to_read = sizeof(monpriv->hdr);
+ }
+ return written;
+
+out_error:
+ monpriv->data_to_read = 0;
+ monpriv->hdr_to_read = sizeof(struct monwrite_hdr);
+ return rc;
+}
+
+static struct file_operations monwrite_fops = {
+ .owner = THIS_MODULE,
+ .open = &monwrite_open,
+ .release = &monwrite_close,
+ .write = &monwrite_write,
+};
+
+static struct miscdevice mon_dev = {
+ .name = "monwriter",
+ .fops = &monwrite_fops,
+ .minor = MISC_DYNAMIC_MINOR,
+};
+
+/*
+ * module init/exit
+ */
+
+static int __init mon_init(void)
+{
+ if (MACHINE_IS_VM)
+ return misc_register(&mon_dev);
+ else
+ return -ENODEV;
+}
+
+static void __exit mon_exit(void)
+{
+ WARN_ON(misc_deregister(&mon_dev) != 0);
+}
+
+module_init(mon_init);
+module_exit(mon_exit);
+
+module_param_named(max_bufs, mon_max_bufs, int, 0644);
+MODULE_PARM_DESC(max_bufs, "Maximum number of sample monitor data buffers"
+ "that can be active at one time");
+
+MODULE_AUTHOR("Melissa Howland <Melissa.Howland@us.ibm.com>");
+MODULE_DESCRIPTION("Character device driver for writing z/VM "
+ "APPLDATA monitor records.");
+MODULE_LICENSE("GPL");
/*
* Copyright (C) 2004,2005 IBM Corporation
- * Interface implementation for communication with the v/VM control program
+ * Interface implementation for communication with the z/VM control program
* Author(s): Christian Borntraeger <cborntra@de.ibm.com>
*
*
/*
* Copyright (C) 2004, 2005 IBM Corporation
- * Interface implementation for communication with the v/VM control program
+ * Interface implementation for communication with the z/VM control program
* Version 1.0
* Author(s): Christian Borntraeger <cborntra@de.ibm.com>
*
/* trigger path verification. */
if (sch->driver && sch->driver->verify)
sch->driver->verify(&sch->dev);
- else if (sch->vpm == mask)
+ else if (sch->lpm == mask)
goto out_unreg;
out_unlock:
spin_unlock_irq(&sch->lock);
if (chp_mask == 0) {
spin_unlock_irq(&sch->lock);
+ put_device(&sch->dev);
return 0;
}
old_lpm = sch->lpm;
spin_unlock_irq(&sch->lock);
put_device(&sch->dev);
- return (res_data->fla_mask == 0xffff) ? -ENODEV : 0;
+ return 0;
}
#include <linux/device.h>
#include <linux/kernel_stat.h>
#include <linux/interrupt.h>
-
#include <asm/cio.h>
#include <asm/delay.h>
#include <asm/irq.h>
-
+#include <asm/setup.h>
#include "airq.h"
#include "cio.h"
#include "css.h"
sch->orb.pfch = sch->options.prefetch == 0;
sch->orb.spnd = sch->options.suspend;
sch->orb.ssic = sch->options.suspend && sch->options.inter;
- sch->orb.lpm = (lpm != 0) ? (lpm & sch->opm) : sch->lpm;
+ sch->orb.lpm = (lpm != 0) ? lpm : sch->lpm;
#ifdef CONFIG_64BIT
/*
* for 64 bit we always support 64 bit IDAWs with 4k page size only
sch->opm = 0xff;
if (!cio_is_console(sch->schid))
chsc_validate_chpids(sch);
- sch->lpm = sch->schib.pmcw.pim &
- sch->schib.pmcw.pam &
- sch->schib.pmcw.pom &
- sch->opm;
+ sch->lpm = sch->schib.pmcw.pam & sch->opm;
CIO_DEBUG(KERN_INFO, 0,
"Detected device %04x on subchannel 0.%x.%04X"
return -EBUSY;
}
-extern void do_reipl(unsigned long devno);
-static int
-__shutdown_subchannel_easy(struct subchannel_id schid, void *data)
+struct sch_match_id {
+ struct subchannel_id schid;
+ struct ccw_dev_id devid;
+ int rc;
+};
+
+static int __shutdown_subchannel_easy_and_match(struct subchannel_id schid,
+ void *data)
{
struct schib schib;
+ struct sch_match_id *match_id = data;
if (stsch_err(schid, &schib))
return -ENXIO;
+ if (match_id && schib.pmcw.dnv &&
+ (schib.pmcw.dev == match_id->devid.devno) &&
+ (schid.ssid == match_id->devid.ssid)) {
+ match_id->schid = schid;
+ match_id->rc = 0;
+ }
if (!schib.pmcw.ena)
return 0;
switch(__disable_subchannel_easy(schid, &schib)) {
return 0;
}
-void
-clear_all_subchannels(void)
+static int clear_all_subchannels_and_match(struct ccw_dev_id *devid,
+ struct subchannel_id *schid)
{
+ struct sch_match_id match_id;
+
+ match_id.devid = *devid;
+ match_id.rc = -ENODEV;
local_irq_disable();
- for_each_subchannel(__shutdown_subchannel_easy, NULL);
+ for_each_subchannel(__shutdown_subchannel_easy_and_match, &match_id);
+ if (match_id.rc == 0)
+ *schid = match_id.schid;
+ return match_id.rc;
}
+
+void clear_all_subchannels(void)
+{
+ local_irq_disable();
+ for_each_subchannel(__shutdown_subchannel_easy_and_match, NULL);
+}
+
+extern void do_reipl_asm(__u32 schid);
+
/* Make sure all subchannels are quiet before we re-ipl an lpar. */
-void
-reipl(unsigned long devno)
+void reipl_ccw_dev(struct ccw_dev_id *devid)
{
- clear_all_subchannels();
+ struct subchannel_id schid;
+
+ if (clear_all_subchannels_and_match(devid, &schid))
+ panic("IPL Device not found\n");
cio_reset_channel_paths();
- do_reipl(devno);
+ do_reipl_asm(*((__u32*)&schid));
+}
+
+extern struct schib ipl_schib;
+
+/*
+ * ipl_save_parameters gets called very early. It is not allowed to access
+ * anything in the bss section at all. The bss section is not cleared yet,
+ * but may contain some ipl parameters written by the firmware.
+ * These parameters (if present) are copied to 0x2000.
+ * To avoid corruption of the ipl parameters, all variables used by this
+ * function must reside on the stack or in the data section.
+ */
+void ipl_save_parameters(void)
+{
+ struct subchannel_id schid;
+ unsigned int *ipl_ptr;
+ void *src, *dst;
+
+ schid = *(struct subchannel_id *)__LC_SUBCHANNEL_ID;
+ if (!schid.one)
+ return;
+ if (stsch(schid, &ipl_schib))
+ return;
+ if (!ipl_schib.pmcw.dnv)
+ return;
+ ipl_devno = ipl_schib.pmcw.dev;
+ ipl_flags |= IPL_DEVNO_VALID;
+ if (!ipl_schib.pmcw.qf)
+ return;
+ ipl_flags |= IPL_PARMBLOCK_VALID;
+ ipl_ptr = (unsigned int *)__LC_IPL_PARMBLOCK_PTR;
+ src = (void *)(unsigned long)*ipl_ptr;
+ dst = (void *)IPL_PARMBLOCK_ORIGIN;
+ memmove(dst, src, PAGE_SIZE);
+ *ipl_ptr = IPL_PARMBLOCK_ORIGIN;
}
return dev ? to_subchannel(dev) : NULL;
}
-
-static inline int
-css_get_subchannel_status(struct subchannel *sch, struct subchannel_id schid)
+static inline int css_get_subchannel_status(struct subchannel *sch)
{
struct schib schib;
- int cc;
- cc = stsch(schid, &schib);
- if (cc)
- return CIO_GONE;
- if (!schib.pmcw.dnv)
+ if (stsch(sch->schid, &schib) || !schib.pmcw.dnv)
return CIO_GONE;
- if (sch && sch->schib.pmcw.dnv &&
- (schib.pmcw.dev != sch->schib.pmcw.dev))
+ if (sch->schib.pmcw.dnv && (schib.pmcw.dev != sch->schib.pmcw.dev))
return CIO_REVALIDATE;
- if (sch && !sch->lpm)
+ if (!sch->lpm)
return CIO_NO_PATH;
return CIO_OPER;
}
-
-static int
-css_evaluate_subchannel(struct subchannel_id schid, int slow)
+
+static int css_evaluate_known_subchannel(struct subchannel *sch, int slow)
{
int event, ret, disc;
- struct subchannel *sch;
unsigned long flags;
+ enum { NONE, UNREGISTER, UNREGISTER_PROBE, REPROBE } action;
- sch = get_subchannel_by_schid(schid);
- disc = sch ? device_is_disconnected(sch) : 0;
+ spin_lock_irqsave(&sch->lock, flags);
+ disc = device_is_disconnected(sch);
if (disc && slow) {
- if (sch)
- put_device(&sch->dev);
- return 0; /* Already processed. */
+ /* Disconnected devices are evaluated directly only.*/
+ spin_unlock_irqrestore(&sch->lock, flags);
+ return 0;
}
- /*
- * We've got a machine check, so running I/O won't get an interrupt.
- * Kill any pending timers.
- */
- if (sch)
- device_kill_pending_timer(sch);
+ /* No interrupt after machine check - kill pending timers. */
+ device_kill_pending_timer(sch);
if (!disc && !slow) {
- if (sch)
- put_device(&sch->dev);
- return -EAGAIN; /* Will be done on the slow path. */
+ /* Non-disconnected devices are evaluated on the slow path. */
+ spin_unlock_irqrestore(&sch->lock, flags);
+ return -EAGAIN;
}
- event = css_get_subchannel_status(sch, schid);
+ event = css_get_subchannel_status(sch);
CIO_MSG_EVENT(4, "Evaluating schid 0.%x.%04x, event %d, %s, %s path.\n",
- schid.ssid, schid.sch_no, event,
- sch?(disc?"disconnected":"normal"):"unknown",
- slow?"slow":"fast");
+ sch->schid.ssid, sch->schid.sch_no, event,
+ disc ? "disconnected" : "normal",
+ slow ? "slow" : "fast");
+ /* Analyze subchannel status. */
+ action = NONE;
switch (event) {
case CIO_NO_PATH:
- case CIO_GONE:
- if (!sch) {
- /* Never used this subchannel. Ignore. */
- ret = 0;
+ if (disc) {
+ /* Check if paths have become available. */
+ action = REPROBE;
break;
}
- if (disc && (event == CIO_NO_PATH)) {
- /*
- * Uargh, hack again. Because we don't get a machine
- * check on configure on, our path bookkeeping can
- * be out of date here (it's fine while we only do
- * logical varying or get chsc machine checks). We
- * need to force reprobing or we might miss devices
- * coming operational again. It won't do harm in real
- * no path situations.
- */
- spin_lock_irqsave(&sch->lock, flags);
- device_trigger_reprobe(sch);
+ /* fall through */
+ case CIO_GONE:
+ /* Prevent unwanted effects when opening lock. */
+ cio_disable_subchannel(sch);
+ device_set_disconnected(sch);
+ /* Ask driver what to do with device. */
+ action = UNREGISTER;
+ if (sch->driver && sch->driver->notify) {
spin_unlock_irqrestore(&sch->lock, flags);
- ret = 0;
- break;
- }
- if (sch->driver && sch->driver->notify &&
- sch->driver->notify(&sch->dev, event)) {
- cio_disable_subchannel(sch);
- device_set_disconnected(sch);
- ret = 0;
- break;
+ ret = sch->driver->notify(&sch->dev, event);
+ spin_lock_irqsave(&sch->lock, flags);
+ if (ret)
+ action = NONE;
}
- /*
- * Unregister subchannel.
- * The device will be killed automatically.
- */
- cio_disable_subchannel(sch);
- css_sch_device_unregister(sch);
- /* Reset intparm to zeroes. */
- sch->schib.pmcw.intparm = 0;
- cio_modify(sch);
- put_device(&sch->dev);
- ret = 0;
break;
case CIO_REVALIDATE:
- /*
- * Revalidation machine check. Sick.
- * We don't notify the driver since we have to throw the device
- * away in any case.
- */
- if (!disc) {
- css_sch_device_unregister(sch);
- /* Reset intparm to zeroes. */
- sch->schib.pmcw.intparm = 0;
- cio_modify(sch);
- put_device(&sch->dev);
- ret = css_probe_device(schid);
- } else {
- /*
- * We can't immediately deregister the disconnected
- * device since it might block.
- */
- spin_lock_irqsave(&sch->lock, flags);
- device_trigger_reprobe(sch);
- spin_unlock_irqrestore(&sch->lock, flags);
- ret = 0;
- }
+ /* Device will be removed, so no notify necessary. */
+ if (disc)
+ /* Reprobe because immediate unregister might block. */
+ action = REPROBE;
+ else
+ action = UNREGISTER_PROBE;
break;
case CIO_OPER:
- if (disc) {
- spin_lock_irqsave(&sch->lock, flags);
+ if (disc)
/* Get device operational again. */
- device_trigger_reprobe(sch);
- spin_unlock_irqrestore(&sch->lock, flags);
- }
- ret = sch ? 0 : css_probe_device(schid);
+ action = REPROBE;
+ break;
+ }
+ /* Perform action. */
+ ret = 0;
+ switch (action) {
+ case UNREGISTER:
+ case UNREGISTER_PROBE:
+ /* Unregister device (will use subchannel lock). */
+ spin_unlock_irqrestore(&sch->lock, flags);
+ css_sch_device_unregister(sch);
+ spin_lock_irqsave(&sch->lock, flags);
+
+ /* Reset intparm to zeroes. */
+ sch->schib.pmcw.intparm = 0;
+ cio_modify(sch);
+
+ /* Probe if necessary. */
+ if (action == UNREGISTER_PROBE)
+ ret = css_probe_device(sch->schid);
+ break;
+ case REPROBE:
+ device_trigger_reprobe(sch);
break;
default:
- BUG();
- ret = 0;
+ break;
+ }
+ spin_unlock_irqrestore(&sch->lock, flags);
+
+ return ret;
+}
+
+static int css_evaluate_new_subchannel(struct subchannel_id schid, int slow)
+{
+ struct schib schib;
+
+ if (!slow) {
+ /* Will be done on the slow path. */
+ return -EAGAIN;
}
+ if (stsch(schid, &schib) || !schib.pmcw.dnv) {
+ /* Unusable - ignore. */
+ return 0;
+ }
+ CIO_MSG_EVENT(4, "Evaluating schid 0.%x.%04x, event %d, unknown, "
+ "slow path.\n", schid.ssid, schid.sch_no, CIO_OPER);
+
+ return css_probe_device(schid);
+}
+
+static int css_evaluate_subchannel(struct subchannel_id schid, int slow)
+{
+ struct subchannel *sch;
+ int ret;
+
+ sch = get_subchannel_by_schid(schid);
+ if (sch) {
+ ret = css_evaluate_known_subchannel(sch, slow);
+ put_device(&sch->dev);
+ } else
+ ret = css_evaluate_new_subchannel(schid, slow);
+
return ret;
}
return 1;
}
-/*
- * Hotplugging interface for ccw devices.
- * Heavily modeled on pci and usb hotplug.
- */
-static int
-ccw_uevent (struct device *dev, char **envp, int num_envp,
- char *buffer, int buffer_size)
+/* Store modalias string delimited by prefix/suffix string into buffer with
+ * specified size. Return length of resulting string (excluding trailing '\0')
+ * even if string doesn't fit buffer (snprintf semantics). */
+static int snprint_alias(char *buf, size_t size, const char *prefix,
+ struct ccw_device_id *id, const char *suffix)
{
- struct ccw_device *cdev = to_ccwdev(dev);
- int i = 0;
- int length = 0;
+ int len;
- if (!cdev)
- return -ENODEV;
+ len = snprintf(buf, size, "%sccw:t%04Xm%02X", prefix, id->cu_type,
+ id->cu_model);
+ if (len > size)
+ return len;
+ buf += len;
+ size -= len;
- /* what we want to pass to /sbin/hotplug */
+ if (id->dev_type != 0)
+ len += snprintf(buf, size, "dt%04Xdm%02X%s", id->dev_type,
+ id->dev_model, suffix);
+ else
+ len += snprintf(buf, size, "dtdm%s", suffix);
- envp[i++] = buffer;
- length += scnprintf(buffer, buffer_size - length, "CU_TYPE=%04X",
- cdev->id.cu_type);
- if ((buffer_size - length <= 0) || (i >= num_envp))
- return -ENOMEM;
- ++length;
- buffer += length;
+ return len;
+}
+/* Set up environment variables for ccw device uevent. Return 0 on success,
+ * non-zero otherwise. */
+static int ccw_uevent(struct device *dev, char **envp, int num_envp,
+ char *buffer, int buffer_size)
+{
+ struct ccw_device *cdev = to_ccwdev(dev);
+ struct ccw_device_id *id = &(cdev->id);
+ int i = 0;
+ int len;
+
+ /* CU_TYPE= */
+ len = snprintf(buffer, buffer_size, "CU_TYPE=%04X", id->cu_type) + 1;
+ if (len > buffer_size || i >= num_envp)
+ return -ENOMEM;
envp[i++] = buffer;
- length += scnprintf(buffer, buffer_size - length, "CU_MODEL=%02X",
- cdev->id.cu_model);
- if ((buffer_size - length <= 0) || (i >= num_envp))
+ buffer += len;
+ buffer_size -= len;
+
+ /* CU_MODEL= */
+ len = snprintf(buffer, buffer_size, "CU_MODEL=%02X", id->cu_model) + 1;
+ if (len > buffer_size || i >= num_envp)
return -ENOMEM;
- ++length;
- buffer += length;
+ envp[i++] = buffer;
+ buffer += len;
+ buffer_size -= len;
/* The next two can be zero, that's ok for us */
- envp[i++] = buffer;
- length += scnprintf(buffer, buffer_size - length, "DEV_TYPE=%04X",
- cdev->id.dev_type);
- if ((buffer_size - length <= 0) || (i >= num_envp))
+ /* DEV_TYPE= */
+ len = snprintf(buffer, buffer_size, "DEV_TYPE=%04X", id->dev_type) + 1;
+ if (len > buffer_size || i >= num_envp)
return -ENOMEM;
- ++length;
- buffer += length;
+ envp[i++] = buffer;
+ buffer += len;
+ buffer_size -= len;
+ /* DEV_MODEL= */
+ len = snprintf(buffer, buffer_size, "DEV_MODEL=%02X",
+ (unsigned char) id->dev_model) + 1;
+ if (len > buffer_size || i >= num_envp)
+ return -ENOMEM;
envp[i++] = buffer;
- length += scnprintf(buffer, buffer_size - length, "DEV_MODEL=%02X",
- cdev->id.dev_model);
- if ((buffer_size - length <= 0) || (i >= num_envp))
+ buffer += len;
+ buffer_size -= len;
+
+ /* MODALIAS= */
+ len = snprint_alias(buffer, buffer_size, "MODALIAS=", id, "") + 1;
+ if (len > buffer_size || i >= num_envp)
return -ENOMEM;
+ envp[i++] = buffer;
+ buffer += len;
+ buffer_size -= len;
envp[i] = NULL;
{
struct ccw_device *cdev = to_ccwdev(dev);
struct ccw_device_id *id = &(cdev->id);
- int ret;
+ int len;
- ret = sprintf(buf, "ccw:t%04Xm%02X",
- id->cu_type, id->cu_model);
- if (id->dev_type != 0)
- ret += sprintf(buf + ret, "dt%04Xdm%02X\n",
- id->dev_type, id->dev_model);
- else
- ret += sprintf(buf + ret, "dtdm\n");
- return ret;
+ len = snprint_alias(buf, PAGE_SIZE, "", id, "\n") + 1;
+
+ return len > PAGE_SIZE ? PAGE_SIZE : len;
}
static ssize_t
*/
old_lpm = sch->lpm;
stsch(sch->schid, &sch->schib);
- sch->lpm = sch->schib.pmcw.pim &
- sch->schib.pmcw.pam &
- sch->schib.pmcw.pom &
- sch->opm;
+ sch->lpm = sch->schib.pmcw.pam & sch->opm;
/* Check since device may again have become not operational. */
if (!sch->schib.pmcw.dnv)
state = DEV_STATE_NOT_OPER;
notify = 1;
}
/* fill out sense information */
+ memset(&cdev->id, 0, sizeof(cdev->id));
cdev->id.cu_type = cdev->private->senseid.cu_type;
cdev->id.cu_model = cdev->private->senseid.cu_model;
cdev->id.dev_type = cdev->private->senseid.dev_type;
return;
}
/* Start Path Group verification. */
- sch->vpm = 0; /* Start with no path groups set. */
cdev->private->state = DEV_STATE_VERIFY;
+ cdev->private->flags.doverify = 0;
ccw_device_verify_start(cdev);
}
void
ccw_device_verify_done(struct ccw_device *cdev, int err)
{
- cdev->private->flags.doverify = 0;
+ struct subchannel *sch;
+
+ sch = to_subchannel(cdev->dev.parent);
+ /* Update schib - pom may have changed. */
+ stsch(sch->schid, &sch->schib);
+ /* Update lpm with verified path mask. */
+ sch->lpm = sch->vpm;
+ /* Repeat path verification? */
+ if (cdev->private->flags.doverify) {
+ cdev->private->flags.doverify = 0;
+ ccw_device_verify_start(cdev);
+ return;
+ }
switch (err) {
case -EOPNOTSUPP: /* path grouping not supported, just set online. */
cdev->private->options.pgroup = 0;
if (!cdev->private->options.pgroup) {
/* Start initial path verification. */
cdev->private->state = DEV_STATE_VERIFY;
+ cdev->private->flags.doverify = 0;
ccw_device_verify_start(cdev);
return 0;
}
/* Are we doing path grouping? */
if (!cdev->private->options.pgroup) {
/* No, set state offline immediately. */
- sch->vpm = 0;
ccw_device_done(cdev, DEV_STATE_OFFLINE);
return 0;
}
}
/* Device is idle, we can do the path verification. */
cdev->private->state = DEV_STATE_VERIFY;
+ cdev->private->flags.doverify = 0;
ccw_device_verify_start(cdev);
}
}
static void
-ccw_device_wait4io_verify(struct ccw_device *cdev, enum dev_event dev_event)
+ccw_device_delay_verify(struct ccw_device *cdev, enum dev_event dev_event)
{
- /* When the I/O has terminated, we have to start verification. */
+ /* Start verification after current task finished. */
cdev->private->flags.doverify = 1;
}
* The pim, pam, pom values may not be accurate, but they are the best
* we have before performing device selection :/
*/
- sch->lpm = sch->schib.pmcw.pim &
- sch->schib.pmcw.pam &
- sch->schib.pmcw.pom &
- sch->opm;
+ sch->lpm = sch->schib.pmcw.pam & sch->opm;
/* Re-set some bits in the pmcw that were lost. */
sch->schib.pmcw.isc = 3;
sch->schib.pmcw.csense = 1;
[DEV_EVENT_NOTOPER] = ccw_device_online_notoper,
[DEV_EVENT_INTERRUPT] = ccw_device_verify_irq,
[DEV_EVENT_TIMEOUT] = ccw_device_onoff_timeout,
- [DEV_EVENT_VERIFY] = ccw_device_nop,
+ [DEV_EVENT_VERIFY] = ccw_device_delay_verify,
},
[DEV_STATE_ONLINE] = {
[DEV_EVENT_NOTOPER] = ccw_device_online_notoper,
[DEV_EVENT_NOTOPER] = ccw_device_online_notoper,
[DEV_EVENT_INTERRUPT] = ccw_device_wait4io_irq,
[DEV_EVENT_TIMEOUT] = ccw_device_wait4io_timeout,
- [DEV_EVENT_VERIFY] = ccw_device_wait4io_verify,
+ [DEV_EVENT_VERIFY] = ccw_device_delay_verify,
},
[DEV_STATE_QUIESCE] = {
[DEV_EVENT_NOTOPER] = ccw_device_quiesce_done,
[DEV_EVENT_NOTOPER] = ccw_device_nop,
[DEV_EVENT_INTERRUPT] = ccw_device_start_id,
[DEV_EVENT_TIMEOUT] = ccw_device_bug,
- [DEV_EVENT_VERIFY] = ccw_device_nop,
+ [DEV_EVENT_VERIFY] = ccw_device_start_id,
},
[DEV_STATE_DISCONNECTED_SENSE_ID] = {
[DEV_EVENT_NOTOPER] = ccw_device_recog_notoper,
ret = cio_set_options (sch, flags);
if (ret)
return ret;
+ /* Adjust requested path mask to excluded varied off paths. */
+ if (lpm) {
+ lpm &= sch->opm;
+ if (lpm == 0)
+ return -EACCES;
+ }
ret = cio_start_key (sch, cpa, lpm, key);
if (ret == 0)
cdev->private->intparm = intparm;
if (!sch)
return 0;
else
- return sch->vpm;
+ return sch->lpm;
}
static void
sch = to_subchannel(cdev->dev.parent);
do {
ret = cio_start (sch, ccw, lpm);
- if ((ret == -EBUSY) || (ret == -EACCES)) {
+ if (ret == -EBUSY) {
/* Try again later. */
spin_unlock_irq(&sch->lock);
msleep(10);
if (!ciw || ciw->cmd == 0)
return -EOPNOTSUPP;
+ /* Adjust requested path mask to excluded varied off paths. */
+ if (lpm) {
+ lpm &= sch->opm;
+ if (lpm == 0)
+ return -EACCES;
+ }
+
rcd_ccw = kzalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
if (!rcd_ccw)
return -ENOMEM;
memset(&cdev->private->irb, 0, sizeof(struct irb));
/* Try multiple times. */
- ret = -ENODEV;
+ ret = -EACCES;
if (cdev->private->iretry > 0) {
cdev->private->iretry--;
ret = cio_start (sch, cdev->private->iccws,
cdev->private->imask);
- /* ret is 0, -EBUSY, -EACCES or -ENODEV */
- if ((ret != -EACCES) && (ret != -ENODEV))
+ /* We expect an interrupt in case of success or busy
+ * indication. */
+ if ((ret == 0) || (ret == -EBUSY))
return ret;
}
- /* PGID command failed on this path. Switch it off. */
- sch->lpm &= ~cdev->private->imask;
- sch->vpm &= ~cdev->private->imask;
+ /* PGID command failed on this path. */
CIO_MSG_EVENT(2, "SPID - Device %04x on Subchannel "
"0.%x.%04x, lpm %02X, became 'not operational'\n",
cdev->private->devno, sch->schid.ssid,
memset(&cdev->private->irb, 0, sizeof(struct irb));
/* Try multiple times. */
- ret = -ENODEV;
+ ret = -EACCES;
if (cdev->private->iretry > 0) {
cdev->private->iretry--;
ret = cio_start (sch, cdev->private->iccws,
cdev->private->imask);
- /* ret is 0, -EBUSY, -EACCES or -ENODEV */
- if ((ret != -EACCES) && (ret != -ENODEV))
+ /* We expect an interrupt in case of success or busy
+ * indication. */
+ if ((ret == 0) || (ret == -EBUSY))
return ret;
}
- /* nop command failed on this path. Switch it off. */
- sch->lpm &= ~cdev->private->imask;
- sch->vpm &= ~cdev->private->imask;
+ /* nop command failed on this path. */
CIO_MSG_EVENT(2, "NOP - Device %04x on Subchannel "
"0.%x.%04x, lpm %02X, became 'not operational'\n",
cdev->private->devno, sch->schid.ssid,
__ccw_device_verify_start(struct ccw_device *cdev)
{
struct subchannel *sch;
- __u8 imask, func;
+ __u8 func;
int ret;
sch = to_subchannel(cdev->dev.parent);
- while (sch->vpm != sch->lpm) {
- /* Find first unequal bit in vpm vs. lpm */
- for (imask = 0x80; imask != 0; imask >>= 1)
- if ((sch->vpm & imask) != (sch->lpm & imask))
- break;
- cdev->private->imask = imask;
+ /* Repeat for all paths. */
+ for (; cdev->private->imask; cdev->private->imask >>= 1,
+ cdev->private->iretry = 5) {
+ if ((cdev->private->imask & sch->schib.pmcw.pam) == 0)
+ /* Path not available, try next. */
+ continue;
if (cdev->private->options.pgroup) {
- func = (sch->vpm & imask) ?
- SPID_FUNC_RESIGN : SPID_FUNC_ESTABLISH;
+ if (sch->opm & cdev->private->imask)
+ func = SPID_FUNC_ESTABLISH;
+ else
+ func = SPID_FUNC_RESIGN;
ret = __ccw_device_do_pgid(cdev, func);
} else
ret = __ccw_device_do_nop(cdev);
+ /* We expect an interrupt in case of success or busy
+ * indication. */
if (ret == 0 || ret == -EBUSY)
return;
- cdev->private->iretry = 5;
+ /* Permanent path failure, try next. */
}
- ccw_device_verify_done(cdev, (sch->lpm != 0) ? 0 : -ENODEV);
+ /* Done with all paths. */
+ ccw_device_verify_done(cdev, (sch->vpm != 0) ? 0 : -ENODEV);
}
/*
else
ret = __ccw_device_check_nop(cdev);
memset(&cdev->private->irb, 0, sizeof(struct irb));
+
switch (ret) {
/* 0, -ETIME, -EAGAIN, -EOPNOTSUPP or -EACCES */
case 0:
- /* Establish or Resign Path Group done. Update vpm. */
- if ((sch->lpm & cdev->private->imask) != 0)
- sch->vpm |= cdev->private->imask;
- else
- sch->vpm &= ~cdev->private->imask;
+ /* Path verification ccw finished successfully, update lpm. */
+ sch->vpm |= sch->opm & cdev->private->imask;
+ /* Go on with next path. */
+ cdev->private->imask >>= 1;
cdev->private->iretry = 5;
__ccw_device_verify_start(cdev);
break;
cdev->private->options.pgroup = 0;
else
cdev->private->flags.pgid_single = 1;
+ /* Retry */
+ sch->vpm = 0;
+ cdev->private->imask = 0x80;
+ cdev->private->iretry = 5;
/* fall through. */
case -EAGAIN: /* Try again. */
__ccw_device_verify_start(cdev);
ccw_device_verify_done(cdev, -ETIME);
break;
case -EACCES: /* channel is not operational. */
- sch->lpm &= ~cdev->private->imask;
- sch->vpm &= ~cdev->private->imask;
+ cdev->private->imask >>= 1;
cdev->private->iretry = 5;
__ccw_device_verify_start(cdev);
break;
struct subchannel *sch = to_subchannel(cdev->dev.parent);
cdev->private->flags.pgid_single = 0;
+ cdev->private->imask = 0x80;
cdev->private->iretry = 5;
- /*
- * Update sch->lpm with current values to catch paths becoming
- * available again.
- */
+
+ /* Start with empty vpm. */
+ sch->vpm = 0;
+
+ /* Get current pam. */
if (stsch(sch->schid, &sch->schib)) {
ccw_device_verify_done(cdev, -ENODEV);
return;
}
- sch->lpm = sch->schib.pmcw.pim &
- sch->schib.pmcw.pam &
- sch->schib.pmcw.pom &
- sch->opm;
__ccw_device_verify_start(cdev);
}
switch (ret) {
/* 0, -ETIME, -EAGAIN, -EOPNOTSUPP or -EACCES */
case 0: /* disband successful. */
- sch->vpm = 0;
ccw_device_disband_done(cdev, ret);
break;
case -EOPNOTSUPP:
static inline __u64
qdio_get_micros(void)
{
- return (get_clock() >> 10); /* time>>12 is microseconds */
+ return (get_clock() >> 12); /* time>>12 is microseconds */
}
/*
#ifdef QDIO_USE_PROCESSING_STATE
if (last_position>=0)
- set_slsb(q, &last_position, SLSB_P_INPUT_NOT_INIT, &count);
+ set_slsb(q, &last_position, SLSB_P_INPUT_PROCESSING, &count);
#endif /* QDIO_USE_PROCESSING_STATE */
QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
#if QDIO_VERBOSE_LEVEL>8
#define QDIO_PRINT_STUPID(x...) printk( KERN_DEBUG QDIO_PRINTK_HEADER x)
#else
-#define QDIO_PRINT_STUPID(x...)
+#define QDIO_PRINT_STUPID(x...) do { } while (0)
#endif
#if QDIO_VERBOSE_LEVEL>7
#define QDIO_PRINT_ALL(x...) printk( QDIO_PRINTK_HEADER x)
#else
-#define QDIO_PRINT_ALL(x...)
+#define QDIO_PRINT_ALL(x...) do { } while (0)
#endif
#if QDIO_VERBOSE_LEVEL>6
#define QDIO_PRINT_INFO(x...) printk( QDIO_PRINTK_HEADER x)
#else
-#define QDIO_PRINT_INFO(x...)
+#define QDIO_PRINT_INFO(x...) do { } while (0)
#endif
#if QDIO_VERBOSE_LEVEL>5
#define QDIO_PRINT_WARN(x...) printk( QDIO_PRINTK_HEADER x)
#else
-#define QDIO_PRINT_WARN(x...)
+#define QDIO_PRINT_WARN(x...) do { } while (0)
#endif
#if QDIO_VERBOSE_LEVEL>4
#define QDIO_PRINT_ERR(x...) printk( QDIO_PRINTK_HEADER x)
#else
-#define QDIO_PRINT_ERR(x...)
+#define QDIO_PRINT_ERR(x...) do { } while (0)
#endif
#if QDIO_VERBOSE_LEVEL>3
#define QDIO_PRINT_CRIT(x...) printk( QDIO_PRINTK_HEADER x)
#else
-#define QDIO_PRINT_CRIT(x...)
+#define QDIO_PRINT_CRIT(x...) do { } while (0)
#endif
#if QDIO_VERBOSE_LEVEL>2
#define QDIO_PRINT_ALERT(x...) printk( QDIO_PRINTK_HEADER x)
#else
-#define QDIO_PRINT_ALERT(x...)
+#define QDIO_PRINT_ALERT(x...) do { } while (0)
#endif
#if QDIO_VERBOSE_LEVEL>1
#define QDIO_PRINT_EMERG(x...) printk( QDIO_PRINTK_HEADER x)
#else
-#define QDIO_PRINT_EMERG(x...)
+#define QDIO_PRINT_EMERG(x...) do { } while (0)
#endif
#define HEXDUMP16(importance,header,ptr) \
# S/390 crypto devices
#
-z90crypt-objs := z90main.o z90hardware.o
-obj-$(CONFIG_Z90CRYPT) += z90crypt.o
+ifdef CONFIG_ZCRYPT_MONOLITHIC
+
+z90crypt-objs := zcrypt_mono.o ap_bus.o zcrypt_api.o \
+ zcrypt_pcica.o zcrypt_pcicc.o zcrypt_pcixcc.o zcrypt_cex2a.o
+obj-$(CONFIG_ZCRYPT) += z90crypt.o
+
+else
+
+ap-objs := ap_bus.o
+obj-$(CONFIG_ZCRYPT) += ap.o zcrypt_api.o zcrypt_pcicc.o zcrypt_pcixcc.o
+obj-$(CONFIG_ZCRYPT) += zcrypt_pcica.o zcrypt_cex2a.o
+
+endif
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/ap_bus.c
+ *
+ * Copyright (C) 2006 IBM Corporation
+ * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
+ * Martin Schwidefsky <schwidefsky@de.ibm.com>
+ * Ralph Wuerthner <rwuerthn@de.ibm.com>
+ *
+ * Adjunct processor bus.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/notifier.h>
+#include <linux/kthread.h>
+#include <linux/mutex.h>
+#include <asm/s390_rdev.h>
+
+#include "ap_bus.h"
+
+/* Some prototypes. */
+static void ap_scan_bus(void *);
+static void ap_poll_all(unsigned long);
+static void ap_poll_timeout(unsigned long);
+static int ap_poll_thread_start(void);
+static void ap_poll_thread_stop(void);
+
+/**
+ * Module description.
+ */
+MODULE_AUTHOR("IBM Corporation");
+MODULE_DESCRIPTION("Adjunct Processor Bus driver, "
+ "Copyright 2006 IBM Corporation");
+MODULE_LICENSE("GPL");
+
+/**
+ * Module parameter
+ */
+int ap_domain_index = -1; /* Adjunct Processor Domain Index */
+module_param_named(domain, ap_domain_index, int, 0000);
+MODULE_PARM_DESC(domain, "domain index for ap devices");
+EXPORT_SYMBOL(ap_domain_index);
+
+static int ap_thread_flag = 1;
+module_param_named(poll_thread, ap_thread_flag, int, 0000);
+MODULE_PARM_DESC(poll_thread, "Turn on/off poll thread, default is 1 (on).");
+
+static struct device *ap_root_device = NULL;
+
+/**
+ * Workqueue & timer for bus rescan.
+ */
+static struct workqueue_struct *ap_work_queue;
+static struct timer_list ap_config_timer;
+static int ap_config_time = AP_CONFIG_TIME;
+static DECLARE_WORK(ap_config_work, ap_scan_bus, NULL);
+
+/**
+ * Tasklet & timer for AP request polling.
+ */
+static struct timer_list ap_poll_timer = TIMER_INITIALIZER(ap_poll_timeout,0,0);
+static DECLARE_TASKLET(ap_tasklet, ap_poll_all, 0);
+static atomic_t ap_poll_requests = ATOMIC_INIT(0);
+static DECLARE_WAIT_QUEUE_HEAD(ap_poll_wait);
+static struct task_struct *ap_poll_kthread = NULL;
+static DEFINE_MUTEX(ap_poll_thread_mutex);
+
+/**
+ * Test if ap instructions are available.
+ *
+ * Returns 0 if the ap instructions are installed.
+ */
+static inline int ap_instructions_available(void)
+{
+ register unsigned long reg0 asm ("0") = AP_MKQID(0,0);
+ register unsigned long reg1 asm ("1") = -ENODEV;
+ register unsigned long reg2 asm ("2") = 0UL;
+
+ asm volatile(
+ " .long 0xb2af0000\n" /* PQAP(TAPQ) */
+ "0: la %1,0\n"
+ "1:\n"
+ EX_TABLE(0b, 1b)
+ : "+d" (reg0), "+d" (reg1), "+d" (reg2) : : "cc" );
+ return reg1;
+}
+
+/**
+ * Test adjunct processor queue.
+ * @qid: the ap queue number
+ * @queue_depth: pointer to queue depth value
+ * @device_type: pointer to device type value
+ *
+ * Returns ap queue status structure.
+ */
+static inline struct ap_queue_status
+ap_test_queue(ap_qid_t qid, int *queue_depth, int *device_type)
+{
+ register unsigned long reg0 asm ("0") = qid;
+ register struct ap_queue_status reg1 asm ("1");
+ register unsigned long reg2 asm ("2") = 0UL;
+
+ asm volatile(".long 0xb2af0000" /* PQAP(TAPQ) */
+ : "+d" (reg0), "=d" (reg1), "+d" (reg2) : : "cc");
+ *device_type = (int) (reg2 >> 24);
+ *queue_depth = (int) (reg2 & 0xff);
+ return reg1;
+}
+
+/**
+ * Reset adjunct processor queue.
+ * @qid: the ap queue number
+ *
+ * Returns ap queue status structure.
+ */
+static inline struct ap_queue_status ap_reset_queue(ap_qid_t qid)
+{
+ register unsigned long reg0 asm ("0") = qid | 0x01000000UL;
+ register struct ap_queue_status reg1 asm ("1");
+ register unsigned long reg2 asm ("2") = 0UL;
+
+ asm volatile(
+ ".long 0xb2af0000" /* PQAP(RAPQ) */
+ : "+d" (reg0), "=d" (reg1), "+d" (reg2) : : "cc");
+ return reg1;
+}
+
+/**
+ * Send message to adjunct processor queue.
+ * @qid: the ap queue number
+ * @psmid: the program supplied message identifier
+ * @msg: the message text
+ * @length: the message length
+ *
+ * Returns ap queue status structure.
+ *
+ * Condition code 1 on NQAP can't happen because the L bit is 1.
+ *
+ * Condition code 2 on NQAP also means the send is incomplete,
+ * because a segment boundary was reached. The NQAP is repeated.
+ */
+static inline struct ap_queue_status
+__ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length)
+{
+ typedef struct { char _[length]; } msgblock;
+ register unsigned long reg0 asm ("0") = qid | 0x40000000UL;
+ register struct ap_queue_status reg1 asm ("1");
+ register unsigned long reg2 asm ("2") = (unsigned long) msg;
+ register unsigned long reg3 asm ("3") = (unsigned long) length;
+ register unsigned long reg4 asm ("4") = (unsigned int) (psmid >> 32);
+ register unsigned long reg5 asm ("5") = (unsigned int) psmid;
+
+ asm volatile (
+ "0: .long 0xb2ad0042\n" /* DQAP */
+ " brc 2,0b"
+ : "+d" (reg0), "=d" (reg1), "+d" (reg2), "+d" (reg3)
+ : "d" (reg4), "d" (reg5), "m" (*(msgblock *) msg)
+ : "cc" );
+ return reg1;
+}
+
+int ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length)
+{
+ struct ap_queue_status status;
+
+ status = __ap_send(qid, psmid, msg, length);
+ switch (status.response_code) {
+ case AP_RESPONSE_NORMAL:
+ return 0;
+ case AP_RESPONSE_Q_FULL:
+ return -EBUSY;
+ default: /* Device is gone. */
+ return -ENODEV;
+ }
+}
+EXPORT_SYMBOL(ap_send);
+
+/*
+ * Receive message from adjunct processor queue.
+ * @qid: the ap queue number
+ * @psmid: pointer to program supplied message identifier
+ * @msg: the message text
+ * @length: the message length
+ *
+ * Returns ap queue status structure.
+ *
+ * Condition code 1 on DQAP means the receive has taken place
+ * but only partially. The response is incomplete, hence the
+ * DQAP is repeated.
+ *
+ * Condition code 2 on DQAP also means the receive is incomplete,
+ * this time because a segment boundary was reached. Again, the
+ * DQAP is repeated.
+ *
+ * Note that gpr2 is used by the DQAP instruction to keep track of
+ * any 'residual' length, in case the instruction gets interrupted.
+ * Hence it gets zeroed before the instruction.
+ */
+static inline struct ap_queue_status
+__ap_recv(ap_qid_t qid, unsigned long long *psmid, void *msg, size_t length)
+{
+ typedef struct { char _[length]; } msgblock;
+ register unsigned long reg0 asm("0") = qid | 0x80000000UL;
+ register struct ap_queue_status reg1 asm ("1");
+ register unsigned long reg2 asm("2") = 0UL;
+ register unsigned long reg4 asm("4") = (unsigned long) msg;
+ register unsigned long reg5 asm("5") = (unsigned long) length;
+ register unsigned long reg6 asm("6") = 0UL;
+ register unsigned long reg7 asm("7") = 0UL;
+
+
+ asm volatile(
+ "0: .long 0xb2ae0064\n"
+ " brc 6,0b\n"
+ : "+d" (reg0), "=d" (reg1), "+d" (reg2),
+ "+d" (reg4), "+d" (reg5), "+d" (reg6), "+d" (reg7),
+ "=m" (*(msgblock *) msg) : : "cc" );
+ *psmid = (((unsigned long long) reg6) << 32) + reg7;
+ return reg1;
+}
+
+int ap_recv(ap_qid_t qid, unsigned long long *psmid, void *msg, size_t length)
+{
+ struct ap_queue_status status;
+
+ status = __ap_recv(qid, psmid, msg, length);
+ switch (status.response_code) {
+ case AP_RESPONSE_NORMAL:
+ return 0;
+ case AP_RESPONSE_NO_PENDING_REPLY:
+ if (status.queue_empty)
+ return -ENOENT;
+ return -EBUSY;
+ default:
+ return -ENODEV;
+ }
+}
+EXPORT_SYMBOL(ap_recv);
+
+/**
+ * Check if an AP queue is available. The test is repeated for
+ * AP_MAX_RESET times.
+ * @qid: the ap queue number
+ * @queue_depth: pointer to queue depth value
+ * @device_type: pointer to device type value
+ */
+static int ap_query_queue(ap_qid_t qid, int *queue_depth, int *device_type)
+{
+ struct ap_queue_status status;
+ int t_depth, t_device_type, rc, i;
+
+ rc = -EBUSY;
+ for (i = 0; i < AP_MAX_RESET; i++) {
+ status = ap_test_queue(qid, &t_depth, &t_device_type);
+ switch (status.response_code) {
+ case AP_RESPONSE_NORMAL:
+ *queue_depth = t_depth + 1;
+ *device_type = t_device_type;
+ rc = 0;
+ break;
+ case AP_RESPONSE_Q_NOT_AVAIL:
+ rc = -ENODEV;
+ break;
+ case AP_RESPONSE_RESET_IN_PROGRESS:
+ break;
+ case AP_RESPONSE_DECONFIGURED:
+ rc = -ENODEV;
+ break;
+ case AP_RESPONSE_CHECKSTOPPED:
+ rc = -ENODEV;
+ break;
+ case AP_RESPONSE_BUSY:
+ break;
+ default:
+ BUG();
+ }
+ if (rc != -EBUSY)
+ break;
+ if (i < AP_MAX_RESET - 1)
+ udelay(5);
+ }
+ return rc;
+}
+
+/**
+ * Reset an AP queue and wait for it to become available again.
+ * @qid: the ap queue number
+ */
+static int ap_init_queue(ap_qid_t qid)
+{
+ struct ap_queue_status status;
+ int rc, dummy, i;
+
+ rc = -ENODEV;
+ status = ap_reset_queue(qid);
+ for (i = 0; i < AP_MAX_RESET; i++) {
+ switch (status.response_code) {
+ case AP_RESPONSE_NORMAL:
+ if (status.queue_empty)
+ rc = 0;
+ break;
+ case AP_RESPONSE_Q_NOT_AVAIL:
+ case AP_RESPONSE_DECONFIGURED:
+ case AP_RESPONSE_CHECKSTOPPED:
+ i = AP_MAX_RESET; /* return with -ENODEV */
+ break;
+ case AP_RESPONSE_RESET_IN_PROGRESS:
+ case AP_RESPONSE_BUSY:
+ default:
+ break;
+ }
+ if (rc != -ENODEV)
+ break;
+ if (i < AP_MAX_RESET - 1) {
+ udelay(5);
+ status = ap_test_queue(qid, &dummy, &dummy);
+ }
+ }
+ return rc;
+}
+
+/**
+ * AP device related attributes.
+ */
+static ssize_t ap_hwtype_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ap_device *ap_dev = to_ap_dev(dev);
+ return snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->device_type);
+}
+static DEVICE_ATTR(hwtype, 0444, ap_hwtype_show, NULL);
+
+static ssize_t ap_depth_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ap_device *ap_dev = to_ap_dev(dev);
+ return snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->queue_depth);
+}
+static DEVICE_ATTR(depth, 0444, ap_depth_show, NULL);
+
+static ssize_t ap_request_count_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ap_device *ap_dev = to_ap_dev(dev);
+ int rc;
+
+ spin_lock_bh(&ap_dev->lock);
+ rc = snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->total_request_count);
+ spin_unlock_bh(&ap_dev->lock);
+ return rc;
+}
+
+static DEVICE_ATTR(request_count, 0444, ap_request_count_show, NULL);
+
+static ssize_t ap_modalias_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "ap:t%02X", to_ap_dev(dev)->device_type);
+}
+
+static DEVICE_ATTR(modalias, 0444, ap_modalias_show, NULL);
+
+static struct attribute *ap_dev_attrs[] = {
+ &dev_attr_hwtype.attr,
+ &dev_attr_depth.attr,
+ &dev_attr_request_count.attr,
+ &dev_attr_modalias.attr,
+ NULL
+};
+static struct attribute_group ap_dev_attr_group = {
+ .attrs = ap_dev_attrs
+};
+
+/**
+ * AP bus driver registration/unregistration.
+ */
+static int ap_bus_match(struct device *dev, struct device_driver *drv)
+{
+ struct ap_device *ap_dev = to_ap_dev(dev);
+ struct ap_driver *ap_drv = to_ap_drv(drv);
+ struct ap_device_id *id;
+
+ /**
+ * Compare device type of the device with the list of
+ * supported types of the device_driver.
+ */
+ for (id = ap_drv->ids; id->match_flags; id++) {
+ if ((id->match_flags & AP_DEVICE_ID_MATCH_DEVICE_TYPE) &&
+ (id->dev_type != ap_dev->device_type))
+ continue;
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * uevent function for AP devices. It sets up a single environment
+ * variable DEV_TYPE which contains the hardware device type.
+ */
+static int ap_uevent (struct device *dev, char **envp, int num_envp,
+ char *buffer, int buffer_size)
+{
+ struct ap_device *ap_dev = to_ap_dev(dev);
+ int length;
+
+ if (!ap_dev)
+ return -ENODEV;
+
+ /* Set up DEV_TYPE environment variable. */
+ envp[0] = buffer;
+ length = scnprintf(buffer, buffer_size, "DEV_TYPE=%04X",
+ ap_dev->device_type);
+ if (buffer_size - length <= 0)
+ return -ENOMEM;
+ envp[1] = 0;
+ return 0;
+}
+
+static struct bus_type ap_bus_type = {
+ .name = "ap",
+ .match = &ap_bus_match,
+ .uevent = &ap_uevent,
+};
+
+static int ap_device_probe(struct device *dev)
+{
+ struct ap_device *ap_dev = to_ap_dev(dev);
+ struct ap_driver *ap_drv = to_ap_drv(dev->driver);
+ int rc;
+
+ ap_dev->drv = ap_drv;
+ rc = ap_drv->probe ? ap_drv->probe(ap_dev) : -ENODEV;
+ if (rc)
+ ap_dev->unregistered = 1;
+ return rc;
+}
+
+/**
+ * Flush all requests from the request/pending queue of an AP device.
+ * @ap_dev: pointer to the AP device.
+ */
+static inline void __ap_flush_queue(struct ap_device *ap_dev)
+{
+ struct ap_message *ap_msg, *next;
+
+ list_for_each_entry_safe(ap_msg, next, &ap_dev->pendingq, list) {
+ list_del_init(&ap_msg->list);
+ ap_dev->pendingq_count--;
+ ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
+ }
+ list_for_each_entry_safe(ap_msg, next, &ap_dev->requestq, list) {
+ list_del_init(&ap_msg->list);
+ ap_dev->requestq_count--;
+ ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
+ }
+}
+
+void ap_flush_queue(struct ap_device *ap_dev)
+{
+ spin_lock_bh(&ap_dev->lock);
+ __ap_flush_queue(ap_dev);
+ spin_unlock_bh(&ap_dev->lock);
+}
+EXPORT_SYMBOL(ap_flush_queue);
+
+static int ap_device_remove(struct device *dev)
+{
+ struct ap_device *ap_dev = to_ap_dev(dev);
+ struct ap_driver *ap_drv = ap_dev->drv;
+
+ spin_lock_bh(&ap_dev->lock);
+ __ap_flush_queue(ap_dev);
+ /**
+ * set ->unregistered to 1 while holding the lock. This prevents
+ * new messages to be put on the queue from now on.
+ */
+ ap_dev->unregistered = 1;
+ spin_unlock_bh(&ap_dev->lock);
+ if (ap_drv->remove)
+ ap_drv->remove(ap_dev);
+ return 0;
+}
+
+int ap_driver_register(struct ap_driver *ap_drv, struct module *owner,
+ char *name)
+{
+ struct device_driver *drv = &ap_drv->driver;
+
+ drv->bus = &ap_bus_type;
+ drv->probe = ap_device_probe;
+ drv->remove = ap_device_remove;
+ drv->owner = owner;
+ drv->name = name;
+ return driver_register(drv);
+}
+EXPORT_SYMBOL(ap_driver_register);
+
+void ap_driver_unregister(struct ap_driver *ap_drv)
+{
+ driver_unregister(&ap_drv->driver);
+}
+EXPORT_SYMBOL(ap_driver_unregister);
+
+/**
+ * AP bus attributes.
+ */
+static ssize_t ap_domain_show(struct bus_type *bus, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", ap_domain_index);
+}
+
+static BUS_ATTR(ap_domain, 0444, ap_domain_show, NULL);
+
+static ssize_t ap_config_time_show(struct bus_type *bus, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", ap_config_time);
+}
+
+static ssize_t ap_config_time_store(struct bus_type *bus,
+ const char *buf, size_t count)
+{
+ int time;
+
+ if (sscanf(buf, "%d\n", &time) != 1 || time < 5 || time > 120)
+ return -EINVAL;
+ ap_config_time = time;
+ if (!timer_pending(&ap_config_timer) ||
+ !mod_timer(&ap_config_timer, jiffies + ap_config_time * HZ)) {
+ ap_config_timer.expires = jiffies + ap_config_time * HZ;
+ add_timer(&ap_config_timer);
+ }
+ return count;
+}
+
+static BUS_ATTR(config_time, 0644, ap_config_time_show, ap_config_time_store);
+
+static ssize_t ap_poll_thread_show(struct bus_type *bus, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%d\n", ap_poll_kthread ? 1 : 0);
+}
+
+static ssize_t ap_poll_thread_store(struct bus_type *bus,
+ const char *buf, size_t count)
+{
+ int flag, rc;
+
+ if (sscanf(buf, "%d\n", &flag) != 1)
+ return -EINVAL;
+ if (flag) {
+ rc = ap_poll_thread_start();
+ if (rc)
+ return rc;
+ }
+ else
+ ap_poll_thread_stop();
+ return count;
+}
+
+static BUS_ATTR(poll_thread, 0644, ap_poll_thread_show, ap_poll_thread_store);
+
+static struct bus_attribute *const ap_bus_attrs[] = {
+ &bus_attr_ap_domain,
+ &bus_attr_config_time,
+ &bus_attr_poll_thread,
+ NULL
+};
+
+/**
+ * Pick one of the 16 ap domains.
+ */
+static inline int ap_select_domain(void)
+{
+ int queue_depth, device_type, count, max_count, best_domain;
+ int rc, i, j;
+
+ /**
+ * We want to use a single domain. Either the one specified with
+ * the "domain=" parameter or the domain with the maximum number
+ * of devices.
+ */
+ if (ap_domain_index >= 0 && ap_domain_index < AP_DOMAINS)
+ /* Domain has already been selected. */
+ return 0;
+ best_domain = -1;
+ max_count = 0;
+ for (i = 0; i < AP_DOMAINS; i++) {
+ count = 0;
+ for (j = 0; j < AP_DEVICES; j++) {
+ ap_qid_t qid = AP_MKQID(j, i);
+ rc = ap_query_queue(qid, &queue_depth, &device_type);
+ if (rc)
+ continue;
+ count++;
+ }
+ if (count > max_count) {
+ max_count = count;
+ best_domain = i;
+ }
+ }
+ if (best_domain >= 0){
+ ap_domain_index = best_domain;
+ return 0;
+ }
+ return -ENODEV;
+}
+
+/**
+ * Find the device type if query queue returned a device type of 0.
+ * @ap_dev: pointer to the AP device.
+ */
+static int ap_probe_device_type(struct ap_device *ap_dev)
+{
+ static unsigned char msg[] = {
+ 0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x01,0x00,0x43,0x43,0x41,0x2d,0x41,0x50,
+ 0x50,0x4c,0x20,0x20,0x20,0x01,0x01,0x01,
+ 0x00,0x00,0x00,0x00,0x50,0x4b,0x00,0x00,
+ 0x00,0x00,0x01,0x1c,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x05,0xb8,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x70,0x00,0x41,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x54,0x32,0x01,0x00,0xa0,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0xb8,0x05,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x0a,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,
+ 0x49,0x43,0x53,0x46,0x20,0x20,0x20,0x20,
+ 0x50,0x4b,0x0a,0x00,0x50,0x4b,0x43,0x53,
+ 0x2d,0x31,0x2e,0x32,0x37,0x00,0x11,0x22,
+ 0x33,0x44,0x55,0x66,0x77,0x88,0x99,0x00,
+ 0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,
+ 0x99,0x00,0x11,0x22,0x33,0x44,0x55,0x66,
+ 0x77,0x88,0x99,0x00,0x11,0x22,0x33,0x44,
+ 0x55,0x66,0x77,0x88,0x99,0x00,0x11,0x22,
+ 0x33,0x44,0x55,0x66,0x77,0x88,0x99,0x00,
+ 0x11,0x22,0x33,0x5d,0x00,0x5b,0x00,0x77,
+ 0x88,0x1e,0x00,0x00,0x57,0x00,0x00,0x00,
+ 0x00,0x04,0x00,0x00,0x4f,0x00,0x00,0x00,
+ 0x03,0x02,0x00,0x00,0x40,0x01,0x00,0x01,
+ 0xce,0x02,0x68,0x2d,0x5f,0xa9,0xde,0x0c,
+ 0xf6,0xd2,0x7b,0x58,0x4b,0xf9,0x28,0x68,
+ 0x3d,0xb4,0xf4,0xef,0x78,0xd5,0xbe,0x66,
+ 0x63,0x42,0xef,0xf8,0xfd,0xa4,0xf8,0xb0,
+ 0x8e,0x29,0xc2,0xc9,0x2e,0xd8,0x45,0xb8,
+ 0x53,0x8c,0x6f,0x4e,0x72,0x8f,0x6c,0x04,
+ 0x9c,0x88,0xfc,0x1e,0xc5,0x83,0x55,0x57,
+ 0xf7,0xdd,0xfd,0x4f,0x11,0x36,0x95,0x5d,
+ };
+ struct ap_queue_status status;
+ unsigned long long psmid;
+ char *reply;
+ int rc, i;
+
+ reply = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!reply) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ status = __ap_send(ap_dev->qid, 0x0102030405060708ULL,
+ msg, sizeof(msg));
+ if (status.response_code != AP_RESPONSE_NORMAL) {
+ rc = -ENODEV;
+ goto out_free;
+ }
+
+ /* Wait for the test message to complete. */
+ for (i = 0; i < 6; i++) {
+ mdelay(300);
+ status = __ap_recv(ap_dev->qid, &psmid, reply, 4096);
+ if (status.response_code == AP_RESPONSE_NORMAL &&
+ psmid == 0x0102030405060708ULL)
+ break;
+ }
+ if (i < 6) {
+ /* Got an answer. */
+ if (reply[0] == 0x00 && reply[1] == 0x86)
+ ap_dev->device_type = AP_DEVICE_TYPE_PCICC;
+ else
+ ap_dev->device_type = AP_DEVICE_TYPE_PCICA;
+ rc = 0;
+ } else
+ rc = -ENODEV;
+
+out_free:
+ free_page((unsigned long) reply);
+out:
+ return rc;
+}
+
+/**
+ * Scan the ap bus for new devices.
+ */
+static int __ap_scan_bus(struct device *dev, void *data)
+{
+ return to_ap_dev(dev)->qid == (ap_qid_t)(unsigned long) data;
+}
+
+static void ap_device_release(struct device *dev)
+{
+ struct ap_device *ap_dev = to_ap_dev(dev);
+
+ kfree(ap_dev);
+}
+
+static void ap_scan_bus(void *data)
+{
+ struct ap_device *ap_dev;
+ struct device *dev;
+ ap_qid_t qid;
+ int queue_depth, device_type;
+ int rc, i;
+
+ if (ap_select_domain() != 0)
+ return;
+ for (i = 0; i < AP_DEVICES; i++) {
+ qid = AP_MKQID(i, ap_domain_index);
+ dev = bus_find_device(&ap_bus_type, NULL,
+ (void *)(unsigned long)qid,
+ __ap_scan_bus);
+ if (dev) {
+ put_device(dev);
+ continue;
+ }
+ rc = ap_query_queue(qid, &queue_depth, &device_type);
+ if (rc)
+ continue;
+ rc = ap_init_queue(qid);
+ if (rc)
+ continue;
+ ap_dev = kzalloc(sizeof(*ap_dev), GFP_KERNEL);
+ if (!ap_dev)
+ break;
+ ap_dev->qid = qid;
+ ap_dev->queue_depth = queue_depth;
+ spin_lock_init(&ap_dev->lock);
+ INIT_LIST_HEAD(&ap_dev->pendingq);
+ INIT_LIST_HEAD(&ap_dev->requestq);
+ if (device_type == 0)
+ ap_probe_device_type(ap_dev);
+ else
+ ap_dev->device_type = device_type;
+
+ ap_dev->device.bus = &ap_bus_type;
+ ap_dev->device.parent = ap_root_device;
+ snprintf(ap_dev->device.bus_id, BUS_ID_SIZE, "card%02x",
+ AP_QID_DEVICE(ap_dev->qid));
+ ap_dev->device.release = ap_device_release;
+ rc = device_register(&ap_dev->device);
+ if (rc) {
+ kfree(ap_dev);
+ continue;
+ }
+ /* Add device attributes. */
+ rc = sysfs_create_group(&ap_dev->device.kobj,
+ &ap_dev_attr_group);
+ if (rc)
+ device_unregister(&ap_dev->device);
+ }
+}
+
+static void
+ap_config_timeout(unsigned long ptr)
+{
+ queue_work(ap_work_queue, &ap_config_work);
+ ap_config_timer.expires = jiffies + ap_config_time * HZ;
+ add_timer(&ap_config_timer);
+}
+
+/**
+ * Set up the timer to run the poll tasklet
+ */
+static inline void ap_schedule_poll_timer(void)
+{
+ if (timer_pending(&ap_poll_timer))
+ return;
+ mod_timer(&ap_poll_timer, jiffies + AP_POLL_TIME);
+}
+
+/**
+ * Receive pending reply messages from an AP device.
+ * @ap_dev: pointer to the AP device
+ * @flags: pointer to control flags, bit 2^0 is set if another poll is
+ * required, bit 2^1 is set if the poll timer needs to get armed
+ * Returns 0 if the device is still present, -ENODEV if not.
+ */
+static inline int ap_poll_read(struct ap_device *ap_dev, unsigned long *flags)
+{
+ struct ap_queue_status status;
+ struct ap_message *ap_msg;
+
+ if (ap_dev->queue_count <= 0)
+ return 0;
+ status = __ap_recv(ap_dev->qid, &ap_dev->reply->psmid,
+ ap_dev->reply->message, ap_dev->reply->length);
+ switch (status.response_code) {
+ case AP_RESPONSE_NORMAL:
+ atomic_dec(&ap_poll_requests);
+ ap_dev->queue_count--;
+ list_for_each_entry(ap_msg, &ap_dev->pendingq, list) {
+ if (ap_msg->psmid != ap_dev->reply->psmid)
+ continue;
+ list_del_init(&ap_msg->list);
+ ap_dev->pendingq_count--;
+ ap_dev->drv->receive(ap_dev, ap_msg, ap_dev->reply);
+ break;
+ }
+ if (ap_dev->queue_count > 0)
+ *flags |= 1;
+ break;
+ case AP_RESPONSE_NO_PENDING_REPLY:
+ if (status.queue_empty) {
+ /* The card shouldn't forget requests but who knows. */
+ ap_dev->queue_count = 0;
+ list_splice_init(&ap_dev->pendingq, &ap_dev->requestq);
+ ap_dev->requestq_count += ap_dev->pendingq_count;
+ ap_dev->pendingq_count = 0;
+ } else
+ *flags |= 2;
+ break;
+ default:
+ return -ENODEV;
+ }
+ return 0;
+}
+
+/**
+ * Send messages from the request queue to an AP device.
+ * @ap_dev: pointer to the AP device
+ * @flags: pointer to control flags, bit 2^0 is set if another poll is
+ * required, bit 2^1 is set if the poll timer needs to get armed
+ * Returns 0 if the device is still present, -ENODEV if not.
+ */
+static inline int ap_poll_write(struct ap_device *ap_dev, unsigned long *flags)
+{
+ struct ap_queue_status status;
+ struct ap_message *ap_msg;
+
+ if (ap_dev->requestq_count <= 0 ||
+ ap_dev->queue_count >= ap_dev->queue_depth)
+ return 0;
+ /* Start the next request on the queue. */
+ ap_msg = list_entry(ap_dev->requestq.next, struct ap_message, list);
+ status = __ap_send(ap_dev->qid, ap_msg->psmid,
+ ap_msg->message, ap_msg->length);
+ switch (status.response_code) {
+ case AP_RESPONSE_NORMAL:
+ atomic_inc(&ap_poll_requests);
+ ap_dev->queue_count++;
+ list_move_tail(&ap_msg->list, &ap_dev->pendingq);
+ ap_dev->requestq_count--;
+ ap_dev->pendingq_count++;
+ if (ap_dev->queue_count < ap_dev->queue_depth &&
+ ap_dev->requestq_count > 0)
+ *flags |= 1;
+ *flags |= 2;
+ break;
+ case AP_RESPONSE_Q_FULL:
+ *flags |= 2;
+ break;
+ case AP_RESPONSE_MESSAGE_TOO_BIG:
+ return -EINVAL;
+ default:
+ return -ENODEV;
+ }
+ return 0;
+}
+
+/**
+ * Poll AP device for pending replies and send new messages. If either
+ * ap_poll_read or ap_poll_write returns -ENODEV unregister the device.
+ * @ap_dev: pointer to the bus device
+ * @flags: pointer to control flags, bit 2^0 is set if another poll is
+ * required, bit 2^1 is set if the poll timer needs to get armed
+ * Returns 0.
+ */
+static inline int ap_poll_queue(struct ap_device *ap_dev, unsigned long *flags)
+{
+ int rc;
+
+ rc = ap_poll_read(ap_dev, flags);
+ if (rc)
+ return rc;
+ return ap_poll_write(ap_dev, flags);
+}
+
+/**
+ * Queue a message to a device.
+ * @ap_dev: pointer to the AP device
+ * @ap_msg: the message to be queued
+ */
+static int __ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg)
+{
+ struct ap_queue_status status;
+
+ if (list_empty(&ap_dev->requestq) &&
+ ap_dev->queue_count < ap_dev->queue_depth) {
+ status = __ap_send(ap_dev->qid, ap_msg->psmid,
+ ap_msg->message, ap_msg->length);
+ switch (status.response_code) {
+ case AP_RESPONSE_NORMAL:
+ list_add_tail(&ap_msg->list, &ap_dev->pendingq);
+ atomic_inc(&ap_poll_requests);
+ ap_dev->pendingq_count++;
+ ap_dev->queue_count++;
+ ap_dev->total_request_count++;
+ break;
+ case AP_RESPONSE_Q_FULL:
+ list_add_tail(&ap_msg->list, &ap_dev->requestq);
+ ap_dev->requestq_count++;
+ ap_dev->total_request_count++;
+ return -EBUSY;
+ case AP_RESPONSE_MESSAGE_TOO_BIG:
+ ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-EINVAL));
+ return -EINVAL;
+ default: /* Device is gone. */
+ ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
+ return -ENODEV;
+ }
+ } else {
+ list_add_tail(&ap_msg->list, &ap_dev->requestq);
+ ap_dev->requestq_count++;
+ ap_dev->total_request_count++;
+ return -EBUSY;
+ }
+ ap_schedule_poll_timer();
+ return 0;
+}
+
+void ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg)
+{
+ unsigned long flags;
+ int rc;
+
+ spin_lock_bh(&ap_dev->lock);
+ if (!ap_dev->unregistered) {
+ /* Make room on the queue by polling for finished requests. */
+ rc = ap_poll_queue(ap_dev, &flags);
+ if (!rc)
+ rc = __ap_queue_message(ap_dev, ap_msg);
+ if (!rc)
+ wake_up(&ap_poll_wait);
+ } else {
+ ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
+ rc = 0;
+ }
+ spin_unlock_bh(&ap_dev->lock);
+ if (rc == -ENODEV)
+ device_unregister(&ap_dev->device);
+}
+EXPORT_SYMBOL(ap_queue_message);
+
+/**
+ * Cancel a crypto request. This is done by removing the request
+ * from the devive pendingq or requestq queue. Note that the
+ * request stays on the AP queue. When it finishes the message
+ * reply will be discarded because the psmid can't be found.
+ * @ap_dev: AP device that has the message queued
+ * @ap_msg: the message that is to be removed
+ */
+void ap_cancel_message(struct ap_device *ap_dev, struct ap_message *ap_msg)
+{
+ struct ap_message *tmp;
+
+ spin_lock_bh(&ap_dev->lock);
+ if (!list_empty(&ap_msg->list)) {
+ list_for_each_entry(tmp, &ap_dev->pendingq, list)
+ if (tmp->psmid == ap_msg->psmid) {
+ ap_dev->pendingq_count--;
+ goto found;
+ }
+ ap_dev->requestq_count--;
+ found:
+ list_del_init(&ap_msg->list);
+ }
+ spin_unlock_bh(&ap_dev->lock);
+}
+EXPORT_SYMBOL(ap_cancel_message);
+
+/**
+ * AP receive polling for finished AP requests
+ */
+static void ap_poll_timeout(unsigned long unused)
+{
+ tasklet_schedule(&ap_tasklet);
+}
+
+/**
+ * Poll all AP devices on the bus in a round robin fashion. Continue
+ * polling until bit 2^0 of the control flags is not set. If bit 2^1
+ * of the control flags has been set arm the poll timer.
+ */
+static int __ap_poll_all(struct device *dev, void *data)
+{
+ struct ap_device *ap_dev = to_ap_dev(dev);
+ int rc;
+
+ spin_lock(&ap_dev->lock);
+ if (!ap_dev->unregistered) {
+ rc = ap_poll_queue(to_ap_dev(dev), (unsigned long *) data);
+ } else
+ rc = 0;
+ spin_unlock(&ap_dev->lock);
+ if (rc)
+ device_unregister(&ap_dev->device);
+ return 0;
+}
+
+static void ap_poll_all(unsigned long dummy)
+{
+ unsigned long flags;
+
+ do {
+ flags = 0;
+ bus_for_each_dev(&ap_bus_type, NULL, &flags, __ap_poll_all);
+ } while (flags & 1);
+ if (flags & 2)
+ ap_schedule_poll_timer();
+}
+
+/**
+ * AP bus poll thread. The purpose of this thread is to poll for
+ * finished requests in a loop if there is a "free" cpu - that is
+ * a cpu that doesn't have anything better to do. The polling stops
+ * as soon as there is another task or if all messages have been
+ * delivered.
+ */
+static int ap_poll_thread(void *data)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ unsigned long flags;
+ int requests;
+
+ set_user_nice(current, -20);
+ while (1) {
+ if (need_resched()) {
+ schedule();
+ continue;
+ }
+ add_wait_queue(&ap_poll_wait, &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (kthread_should_stop())
+ break;
+ requests = atomic_read(&ap_poll_requests);
+ if (requests <= 0)
+ schedule();
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&ap_poll_wait, &wait);
+
+ local_bh_disable();
+ flags = 0;
+ bus_for_each_dev(&ap_bus_type, NULL, &flags, __ap_poll_all);
+ local_bh_enable();
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&ap_poll_wait, &wait);
+ return 0;
+}
+
+static int ap_poll_thread_start(void)
+{
+ int rc;
+
+ mutex_lock(&ap_poll_thread_mutex);
+ if (!ap_poll_kthread) {
+ ap_poll_kthread = kthread_run(ap_poll_thread, NULL, "appoll");
+ rc = IS_ERR(ap_poll_kthread) ? PTR_ERR(ap_poll_kthread) : 0;
+ if (rc)
+ ap_poll_kthread = NULL;
+ }
+ else
+ rc = 0;
+ mutex_unlock(&ap_poll_thread_mutex);
+ return rc;
+}
+
+static void ap_poll_thread_stop(void)
+{
+ mutex_lock(&ap_poll_thread_mutex);
+ if (ap_poll_kthread) {
+ kthread_stop(ap_poll_kthread);
+ ap_poll_kthread = NULL;
+ }
+ mutex_unlock(&ap_poll_thread_mutex);
+}
+
+/**
+ * The module initialization code.
+ */
+int __init ap_module_init(void)
+{
+ int rc, i;
+
+ if (ap_domain_index < -1 || ap_domain_index >= AP_DOMAINS) {
+ printk(KERN_WARNING "Invalid param: domain = %d. "
+ " Not loading.\n", ap_domain_index);
+ return -EINVAL;
+ }
+ if (ap_instructions_available() != 0) {
+ printk(KERN_WARNING "AP instructions not installed.\n");
+ return -ENODEV;
+ }
+
+ /* Create /sys/bus/ap. */
+ rc = bus_register(&ap_bus_type);
+ if (rc)
+ goto out;
+ for (i = 0; ap_bus_attrs[i]; i++) {
+ rc = bus_create_file(&ap_bus_type, ap_bus_attrs[i]);
+ if (rc)
+ goto out_bus;
+ }
+
+ /* Create /sys/devices/ap. */
+ ap_root_device = s390_root_dev_register("ap");
+ rc = IS_ERR(ap_root_device) ? PTR_ERR(ap_root_device) : 0;
+ if (rc)
+ goto out_bus;
+
+ ap_work_queue = create_singlethread_workqueue("kapwork");
+ if (!ap_work_queue) {
+ rc = -ENOMEM;
+ goto out_root;
+ }
+
+ if (ap_select_domain() == 0)
+ ap_scan_bus(NULL);
+
+ /* Setup the ap bus rescan timer. */
+ init_timer(&ap_config_timer);
+ ap_config_timer.function = ap_config_timeout;
+ ap_config_timer.data = 0;
+ ap_config_timer.expires = jiffies + ap_config_time * HZ;
+ add_timer(&ap_config_timer);
+
+ /* Start the low priority AP bus poll thread. */
+ if (ap_thread_flag) {
+ rc = ap_poll_thread_start();
+ if (rc)
+ goto out_work;
+ }
+
+ return 0;
+
+out_work:
+ del_timer_sync(&ap_config_timer);
+ del_timer_sync(&ap_poll_timer);
+ destroy_workqueue(ap_work_queue);
+out_root:
+ s390_root_dev_unregister(ap_root_device);
+out_bus:
+ while (i--)
+ bus_remove_file(&ap_bus_type, ap_bus_attrs[i]);
+ bus_unregister(&ap_bus_type);
+out:
+ return rc;
+}
+
+static int __ap_match_all(struct device *dev, void *data)
+{
+ return 1;
+}
+
+/**
+ * The module termination code
+ */
+void ap_module_exit(void)
+{
+ int i;
+ struct device *dev;
+
+ ap_poll_thread_stop();
+ del_timer_sync(&ap_config_timer);
+ del_timer_sync(&ap_poll_timer);
+ destroy_workqueue(ap_work_queue);
+ s390_root_dev_unregister(ap_root_device);
+ while ((dev = bus_find_device(&ap_bus_type, NULL, NULL,
+ __ap_match_all)))
+ {
+ device_unregister(dev);
+ put_device(dev);
+ }
+ for (i = 0; ap_bus_attrs[i]; i++)
+ bus_remove_file(&ap_bus_type, ap_bus_attrs[i]);
+ bus_unregister(&ap_bus_type);
+}
+
+#ifndef CONFIG_ZCRYPT_MONOLITHIC
+module_init(ap_module_init);
+module_exit(ap_module_exit);
+#endif
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/ap_bus.h
+ *
+ * Copyright (C) 2006 IBM Corporation
+ * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
+ * Martin Schwidefsky <schwidefsky@de.ibm.com>
+ * Ralph Wuerthner <rwuerthn@de.ibm.com>
+ *
+ * Adjunct processor bus header file.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _AP_BUS_H_
+#define _AP_BUS_H_
+
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/types.h>
+
+#define AP_DEVICES 64 /* Number of AP devices. */
+#define AP_DOMAINS 16 /* Number of AP domains. */
+#define AP_MAX_RESET 90 /* Maximum number of resets. */
+#define AP_CONFIG_TIME 30 /* Time in seconds between AP bus rescans. */
+#define AP_POLL_TIME 1 /* Time in ticks between receive polls. */
+
+extern int ap_domain_index;
+
+/**
+ * The ap_qid_t identifier of an ap queue. It contains a
+ * 6 bit device index and a 4 bit queue index (domain).
+ */
+typedef unsigned int ap_qid_t;
+
+#define AP_MKQID(_device,_queue) (((_device) & 63) << 8 | ((_queue) & 15))
+#define AP_QID_DEVICE(_qid) (((_qid) >> 8) & 63)
+#define AP_QID_QUEUE(_qid) ((_qid) & 15)
+
+/**
+ * The ap queue status word is returned by all three AP functions
+ * (PQAP, NQAP and DQAP). There's a set of flags in the first
+ * byte, followed by a 1 byte response code.
+ */
+struct ap_queue_status {
+ unsigned int queue_empty : 1;
+ unsigned int replies_waiting : 1;
+ unsigned int queue_full : 1;
+ unsigned int pad1 : 5;
+ unsigned int response_code : 8;
+ unsigned int pad2 : 16;
+};
+
+#define AP_RESPONSE_NORMAL 0x00
+#define AP_RESPONSE_Q_NOT_AVAIL 0x01
+#define AP_RESPONSE_RESET_IN_PROGRESS 0x02
+#define AP_RESPONSE_DECONFIGURED 0x03
+#define AP_RESPONSE_CHECKSTOPPED 0x04
+#define AP_RESPONSE_BUSY 0x05
+#define AP_RESPONSE_Q_FULL 0x10
+#define AP_RESPONSE_NO_PENDING_REPLY 0x10
+#define AP_RESPONSE_INDEX_TOO_BIG 0x11
+#define AP_RESPONSE_NO_FIRST_PART 0x13
+#define AP_RESPONSE_MESSAGE_TOO_BIG 0x15
+
+/**
+ * Known device types
+ */
+#define AP_DEVICE_TYPE_PCICC 3
+#define AP_DEVICE_TYPE_PCICA 4
+#define AP_DEVICE_TYPE_PCIXCC 5
+#define AP_DEVICE_TYPE_CEX2A 6
+#define AP_DEVICE_TYPE_CEX2C 7
+
+struct ap_device;
+struct ap_message;
+
+struct ap_driver {
+ struct device_driver driver;
+ struct ap_device_id *ids;
+
+ int (*probe)(struct ap_device *);
+ void (*remove)(struct ap_device *);
+ /* receive is called from tasklet context */
+ void (*receive)(struct ap_device *, struct ap_message *,
+ struct ap_message *);
+};
+
+#define to_ap_drv(x) container_of((x), struct ap_driver, driver)
+
+int ap_driver_register(struct ap_driver *, struct module *, char *);
+void ap_driver_unregister(struct ap_driver *);
+
+struct ap_device {
+ struct device device;
+ struct ap_driver *drv; /* Pointer to AP device driver. */
+ spinlock_t lock; /* Per device lock. */
+
+ ap_qid_t qid; /* AP queue id. */
+ int queue_depth; /* AP queue depth.*/
+ int device_type; /* AP device type. */
+ int unregistered; /* marks AP device as unregistered */
+
+ int queue_count; /* # messages currently on AP queue. */
+
+ struct list_head pendingq; /* List of message sent to AP queue. */
+ int pendingq_count; /* # requests on pendingq list. */
+ struct list_head requestq; /* List of message yet to be sent. */
+ int requestq_count; /* # requests on requestq list. */
+ int total_request_count; /* # requests ever for this AP device. */
+
+ struct ap_message *reply; /* Per device reply message. */
+
+ void *private; /* ap driver private pointer. */
+};
+
+#define to_ap_dev(x) container_of((x), struct ap_device, device)
+
+struct ap_message {
+ struct list_head list; /* Request queueing. */
+ unsigned long long psmid; /* Message id. */
+ void *message; /* Pointer to message buffer. */
+ size_t length; /* Message length. */
+
+ void *private; /* ap driver private pointer. */
+};
+
+#define AP_DEVICE(dt) \
+ .dev_type=(dt), \
+ .match_flags=AP_DEVICE_ID_MATCH_DEVICE_TYPE,
+
+/**
+ * Note: don't use ap_send/ap_recv after using ap_queue_message
+ * for the first time. Otherwise the ap message queue will get
+ * confused.
+ */
+int ap_send(ap_qid_t, unsigned long long, void *, size_t);
+int ap_recv(ap_qid_t, unsigned long long *, void *, size_t);
+
+void ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg);
+void ap_cancel_message(struct ap_device *ap_dev, struct ap_message *ap_msg);
+void ap_flush_queue(struct ap_device *ap_dev);
+
+int ap_module_init(void);
+void ap_module_exit(void);
+
+#endif /* _AP_BUS_H_ */
+++ /dev/null
-/*
- * linux/drivers/s390/crypto/z90common.h
- *
- * z90crypt 1.3.3
- *
- * Copyright (C) 2001, 2005 IBM Corporation
- * Author(s): Robert Burroughs (burrough@us.ibm.com)
- * Eric Rossman (edrossma@us.ibm.com)
- *
- * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef _Z90COMMON_H_
-#define _Z90COMMON_H_
-
-
-#define RESPBUFFSIZE 256
-#define PCI_FUNC_KEY_DECRYPT 0x5044
-#define PCI_FUNC_KEY_ENCRYPT 0x504B
-extern int ext_bitlens;
-
-enum devstat {
- DEV_GONE,
- DEV_ONLINE,
- DEV_QUEUE_FULL,
- DEV_EMPTY,
- DEV_NO_WORK,
- DEV_BAD_MESSAGE,
- DEV_TSQ_EXCEPTION,
- DEV_RSQ_EXCEPTION,
- DEV_SEN_EXCEPTION,
- DEV_REC_EXCEPTION
-};
-
-enum hdstat {
- HD_NOT_THERE,
- HD_BUSY,
- HD_DECONFIGURED,
- HD_CHECKSTOPPED,
- HD_ONLINE,
- HD_TSQ_EXCEPTION
-};
-
-#define Z90C_NO_DEVICES 1
-#define Z90C_AMBIGUOUS_DOMAIN 2
-#define Z90C_INCORRECT_DOMAIN 3
-#define ENOTINIT 4
-
-#define SEN_BUSY 7
-#define SEN_USER_ERROR 8
-#define SEN_QUEUE_FULL 11
-#define SEN_NOT_AVAIL 16
-#define SEN_PAD_ERROR 17
-#define SEN_RETRY 18
-#define SEN_RELEASED 24
-
-#define REC_EMPTY 4
-#define REC_BUSY 6
-#define REC_OPERAND_INV 8
-#define REC_OPERAND_SIZE 9
-#define REC_EVEN_MOD 10
-#define REC_NO_WORK 11
-#define REC_HARDWAR_ERR 12
-#define REC_NO_RESPONSE 13
-#define REC_RETRY_DEV 14
-#define REC_USER_GONE 15
-#define REC_BAD_MESSAGE 16
-#define REC_INVALID_PAD 17
-#define REC_USE_PCICA 18
-
-#define WRONG_DEVICE_TYPE 20
-
-#define REC_FATAL_ERROR 32
-#define SEN_FATAL_ERROR 33
-#define TSQ_FATAL_ERROR 34
-#define RSQ_FATAL_ERROR 35
-
-#define Z90CRYPT_NUM_TYPES 6
-#define PCICA 0
-#define PCICC 1
-#define PCIXCC_MCL2 2
-#define PCIXCC_MCL3 3
-#define CEX2C 4
-#define CEX2A 5
-#define NILDEV -1
-#define ANYDEV -1
-#define PCIXCC_UNK -2
-
-enum hdevice_type {
- PCICC_HW = 3,
- PCICA_HW = 4,
- PCIXCC_HW = 5,
- CEX2A_HW = 6,
- CEX2C_HW = 7
-};
-
-struct CPRBX {
- unsigned short cprb_len;
- unsigned char cprb_ver_id;
- unsigned char pad_000[3];
- unsigned char func_id[2];
- unsigned char cprb_flags[4];
- unsigned int req_parml;
- unsigned int req_datal;
- unsigned int rpl_msgbl;
- unsigned int rpld_parml;
- unsigned int rpl_datal;
- unsigned int rpld_datal;
- unsigned int req_extbl;
- unsigned char pad_001[4];
- unsigned int rpld_extbl;
- unsigned char req_parmb[16];
- unsigned char req_datab[16];
- unsigned char rpl_parmb[16];
- unsigned char rpl_datab[16];
- unsigned char req_extb[16];
- unsigned char rpl_extb[16];
- unsigned short ccp_rtcode;
- unsigned short ccp_rscode;
- unsigned int mac_data_len;
- unsigned char logon_id[8];
- unsigned char mac_value[8];
- unsigned char mac_content_flgs;
- unsigned char pad_002;
- unsigned short domain;
- unsigned char pad_003[12];
- unsigned char pad_004[36];
-};
-
-#ifndef DEV_NAME
-#define DEV_NAME "z90crypt"
-#endif
-#define PRINTK(fmt, args...) \
- printk(KERN_DEBUG DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
-#define PRINTKN(fmt, args...) \
- printk(KERN_DEBUG DEV_NAME ": " fmt, ## args)
-#define PRINTKW(fmt, args...) \
- printk(KERN_WARNING DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
-#define PRINTKC(fmt, args...) \
- printk(KERN_CRIT DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
-
-#ifdef Z90CRYPT_DEBUG
-#define PDEBUG(fmt, args...) \
- printk(KERN_DEBUG DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
-#else
-#define PDEBUG(fmt, args...) do {} while (0)
-#endif
-
-#define UMIN(a,b) ((a) < (b) ? (a) : (b))
-#define IS_EVEN(x) ((x) == (2 * ((x) / 2)))
-
-#endif
+++ /dev/null
-/*
- * linux/drivers/s390/crypto/z90crypt.h
- *
- * z90crypt 1.3.3 (kernel-private header)
- *
- * Copyright (C) 2001, 2005 IBM Corporation
- * Author(s): Robert Burroughs (burrough@us.ibm.com)
- * Eric Rossman (edrossma@us.ibm.com)
- *
- * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef _Z90CRYPT_H_
-#define _Z90CRYPT_H_
-
-#include <asm/z90crypt.h>
-
-/**
- * local errno definitions
- */
-#define ENOBUFF 129 // filp->private_data->...>work_elem_p->buffer is NULL
-#define EWORKPEND 130 // user issues ioctl while another pending
-#define ERELEASED 131 // user released while ioctl pending
-#define EQUIESCE 132 // z90crypt quiescing (no more work allowed)
-#define ETIMEOUT 133 // request timed out
-#define EUNKNOWN 134 // some unrecognized error occured (retry may succeed)
-#define EGETBUFF 135 // Error getting buffer or hardware lacks capability
- // (retry in software)
-
-/**
- * DEPRECATED STRUCTURES
- */
-
-/**
- * This structure is DEPRECATED and the corresponding ioctl() has been
- * replaced with individual ioctl()s for each piece of data!
- * This structure will NOT survive past version 1.3.1, so switch to the
- * new ioctl()s.
- */
-#define MASK_LENGTH 64 // mask length
-struct ica_z90_status {
- int totalcount;
- int leedslitecount; // PCICA
- int leeds2count; // PCICC
- // int PCIXCCCount; is not in struct for backward compatibility
- int requestqWaitCount;
- int pendingqWaitCount;
- int totalOpenCount;
- int cryptoDomain;
- // status: 0=not there, 1=PCICA, 2=PCICC, 3=PCIXCC_MCL2, 4=PCIXCC_MCL3,
- // 5=CEX2C
- unsigned char status[MASK_LENGTH];
- // qdepth: # work elements waiting for each device
- unsigned char qdepth[MASK_LENGTH];
-};
-
-#endif /* _Z90CRYPT_H_ */
+++ /dev/null
-/*
- * linux/drivers/s390/crypto/z90hardware.c
- *
- * z90crypt 1.3.3
- *
- * Copyright (C) 2001, 2005 IBM Corporation
- * Author(s): Robert Burroughs (burrough@us.ibm.com)
- * Eric Rossman (edrossma@us.ibm.com)
- *
- * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <asm/uaccess.h>
-#include <linux/compiler.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include "z90crypt.h"
-#include "z90common.h"
-
-struct cca_token_hdr {
- unsigned char token_identifier;
- unsigned char version;
- unsigned short token_length;
- unsigned char reserved[4];
-};
-
-#define CCA_TKN_HDR_ID_EXT 0x1E
-
-struct cca_private_ext_ME_sec {
- unsigned char section_identifier;
- unsigned char version;
- unsigned short section_length;
- unsigned char private_key_hash[20];
- unsigned char reserved1[4];
- unsigned char key_format;
- unsigned char reserved2;
- unsigned char key_name_hash[20];
- unsigned char key_use_flags[4];
- unsigned char reserved3[6];
- unsigned char reserved4[24];
- unsigned char confounder[24];
- unsigned char exponent[128];
- unsigned char modulus[128];
-};
-
-#define CCA_PVT_USAGE_ALL 0x80
-
-struct cca_public_sec {
- unsigned char section_identifier;
- unsigned char version;
- unsigned short section_length;
- unsigned char reserved[2];
- unsigned short exponent_len;
- unsigned short modulus_bit_len;
- unsigned short modulus_byte_len;
- unsigned char exponent[3];
-};
-
-struct cca_private_ext_ME {
- struct cca_token_hdr pvtMEHdr;
- struct cca_private_ext_ME_sec pvtMESec;
- struct cca_public_sec pubMESec;
-};
-
-struct cca_public_key {
- struct cca_token_hdr pubHdr;
- struct cca_public_sec pubSec;
-};
-
-struct cca_pvt_ext_CRT_sec {
- unsigned char section_identifier;
- unsigned char version;
- unsigned short section_length;
- unsigned char private_key_hash[20];
- unsigned char reserved1[4];
- unsigned char key_format;
- unsigned char reserved2;
- unsigned char key_name_hash[20];
- unsigned char key_use_flags[4];
- unsigned short p_len;
- unsigned short q_len;
- unsigned short dp_len;
- unsigned short dq_len;
- unsigned short u_len;
- unsigned short mod_len;
- unsigned char reserved3[4];
- unsigned short pad_len;
- unsigned char reserved4[52];
- unsigned char confounder[8];
-};
-
-#define CCA_PVT_EXT_CRT_SEC_ID_PVT 0x08
-#define CCA_PVT_EXT_CRT_SEC_FMT_CL 0x40
-
-struct cca_private_ext_CRT {
- struct cca_token_hdr pvtCrtHdr;
- struct cca_pvt_ext_CRT_sec pvtCrtSec;
- struct cca_public_sec pubCrtSec;
-};
-
-struct ap_status_word {
- unsigned char q_stat_flags;
- unsigned char response_code;
- unsigned char reserved[2];
-};
-
-#define AP_Q_STATUS_EMPTY 0x80
-#define AP_Q_STATUS_REPLIES_WAITING 0x40
-#define AP_Q_STATUS_ARRAY_FULL 0x20
-
-#define AP_RESPONSE_NORMAL 0x00
-#define AP_RESPONSE_Q_NOT_AVAIL 0x01
-#define AP_RESPONSE_RESET_IN_PROGRESS 0x02
-#define AP_RESPONSE_DECONFIGURED 0x03
-#define AP_RESPONSE_CHECKSTOPPED 0x04
-#define AP_RESPONSE_BUSY 0x05
-#define AP_RESPONSE_Q_FULL 0x10
-#define AP_RESPONSE_NO_PENDING_REPLY 0x10
-#define AP_RESPONSE_INDEX_TOO_BIG 0x11
-#define AP_RESPONSE_NO_FIRST_PART 0x13
-#define AP_RESPONSE_MESSAGE_TOO_BIG 0x15
-
-#define AP_MAX_CDX_BITL 4
-#define AP_RQID_RESERVED_BITL 4
-#define SKIP_BITL (AP_MAX_CDX_BITL + AP_RQID_RESERVED_BITL)
-
-struct type4_hdr {
- unsigned char reserved1;
- unsigned char msg_type_code;
- unsigned short msg_len;
- unsigned char request_code;
- unsigned char msg_fmt;
- unsigned short reserved2;
-};
-
-#define TYPE4_TYPE_CODE 0x04
-#define TYPE4_REQU_CODE 0x40
-
-#define TYPE4_SME_LEN 0x0188
-#define TYPE4_LME_LEN 0x0308
-#define TYPE4_SCR_LEN 0x01E0
-#define TYPE4_LCR_LEN 0x03A0
-
-#define TYPE4_SME_FMT 0x00
-#define TYPE4_LME_FMT 0x10
-#define TYPE4_SCR_FMT 0x40
-#define TYPE4_LCR_FMT 0x50
-
-struct type4_sme {
- struct type4_hdr header;
- unsigned char message[128];
- unsigned char exponent[128];
- unsigned char modulus[128];
-};
-
-struct type4_lme {
- struct type4_hdr header;
- unsigned char message[256];
- unsigned char exponent[256];
- unsigned char modulus[256];
-};
-
-struct type4_scr {
- struct type4_hdr header;
- unsigned char message[128];
- unsigned char dp[72];
- unsigned char dq[64];
- unsigned char p[72];
- unsigned char q[64];
- unsigned char u[72];
-};
-
-struct type4_lcr {
- struct type4_hdr header;
- unsigned char message[256];
- unsigned char dp[136];
- unsigned char dq[128];
- unsigned char p[136];
- unsigned char q[128];
- unsigned char u[136];
-};
-
-union type4_msg {
- struct type4_sme sme;
- struct type4_lme lme;
- struct type4_scr scr;
- struct type4_lcr lcr;
-};
-
-struct type84_hdr {
- unsigned char reserved1;
- unsigned char code;
- unsigned short len;
- unsigned char reserved2[4];
-};
-
-#define TYPE84_RSP_CODE 0x84
-
-struct type6_hdr {
- unsigned char reserved1;
- unsigned char type;
- unsigned char reserved2[2];
- unsigned char right[4];
- unsigned char reserved3[2];
- unsigned char reserved4[2];
- unsigned char apfs[4];
- unsigned int offset1;
- unsigned int offset2;
- unsigned int offset3;
- unsigned int offset4;
- unsigned char agent_id[16];
- unsigned char rqid[2];
- unsigned char reserved5[2];
- unsigned char function_code[2];
- unsigned char reserved6[2];
- unsigned int ToCardLen1;
- unsigned int ToCardLen2;
- unsigned int ToCardLen3;
- unsigned int ToCardLen4;
- unsigned int FromCardLen1;
- unsigned int FromCardLen2;
- unsigned int FromCardLen3;
- unsigned int FromCardLen4;
-};
-
-struct CPRB {
- unsigned char cprb_len[2];
- unsigned char cprb_ver_id;
- unsigned char pad_000;
- unsigned char srpi_rtcode[4];
- unsigned char srpi_verb;
- unsigned char flags;
- unsigned char func_id[2];
- unsigned char checkpoint_flag;
- unsigned char resv2;
- unsigned char req_parml[2];
- unsigned char req_parmp[4];
- unsigned char req_datal[4];
- unsigned char req_datap[4];
- unsigned char rpl_parml[2];
- unsigned char pad_001[2];
- unsigned char rpl_parmp[4];
- unsigned char rpl_datal[4];
- unsigned char rpl_datap[4];
- unsigned char ccp_rscode[2];
- unsigned char ccp_rtcode[2];
- unsigned char repd_parml[2];
- unsigned char mac_data_len[2];
- unsigned char repd_datal[4];
- unsigned char req_pc[2];
- unsigned char res_origin[8];
- unsigned char mac_value[8];
- unsigned char logon_id[8];
- unsigned char usage_domain[2];
- unsigned char resv3[18];
- unsigned char svr_namel[2];
- unsigned char svr_name[8];
-};
-
-struct type6_msg {
- struct type6_hdr header;
- struct CPRB CPRB;
-};
-
-struct type86_hdr {
- unsigned char reserved1;
- unsigned char type;
- unsigned char format;
- unsigned char reserved2;
- unsigned char reply_code;
- unsigned char reserved3[3];
-};
-
-#define TYPE86_RSP_CODE 0x86
-#define TYPE86_FMT2 0x02
-
-struct type86_fmt2_msg {
- struct type86_hdr header;
- unsigned char reserved[4];
- unsigned char apfs[4];
- unsigned int count1;
- unsigned int offset1;
- unsigned int count2;
- unsigned int offset2;
- unsigned int count3;
- unsigned int offset3;
- unsigned int count4;
- unsigned int offset4;
-};
-
-static struct type6_hdr static_type6_hdr = {
- 0x00,
- 0x06,
- {0x00,0x00},
- {0x00,0x00,0x00,0x00},
- {0x00,0x00},
- {0x00,0x00},
- {0x00,0x00,0x00,0x00},
- 0x00000058,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- {0x01,0x00,0x43,0x43,0x41,0x2D,0x41,0x50,
- 0x50,0x4C,0x20,0x20,0x20,0x01,0x01,0x01},
- {0x00,0x00},
- {0x00,0x00},
- {0x50,0x44},
- {0x00,0x00},
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000
-};
-
-static struct type6_hdr static_type6_hdrX = {
- 0x00,
- 0x06,
- {0x00,0x00},
- {0x00,0x00,0x00,0x00},
- {0x00,0x00},
- {0x00,0x00},
- {0x00,0x00,0x00,0x00},
- 0x00000058,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- {0x43,0x41,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00},
- {0x00,0x00},
- {0x50,0x44},
- {0x00,0x00},
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000
-};
-
-static struct CPRB static_cprb = {
- {0x70,0x00},
- 0x41,
- 0x00,
- {0x00,0x00,0x00,0x00},
- 0x00,
- 0x00,
- {0x54,0x32},
- 0x01,
- 0x00,
- {0x00,0x00},
- {0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00},
- {0x00,0x00},
- {0x00,0x00},
- {0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00},
- {0x00,0x00},
- {0x00,0x00},
- {0x00,0x00},
- {0x00,0x00},
- {0x00,0x00,0x00,0x00},
- {0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00},
- {0x08,0x00},
- {0x49,0x43,0x53,0x46,0x20,0x20,0x20,0x20}
-};
-
-struct function_and_rules_block {
- unsigned char function_code[2];
- unsigned char ulen[2];
- unsigned char only_rule[8];
-};
-
-static struct function_and_rules_block static_pkd_function_and_rules = {
- {0x50,0x44},
- {0x0A,0x00},
- {'P','K','C','S','-','1','.','2'}
-};
-
-static struct function_and_rules_block static_pke_function_and_rules = {
- {0x50,0x4B},
- {0x0A,0x00},
- {'P','K','C','S','-','1','.','2'}
-};
-
-struct T6_keyBlock_hdr {
- unsigned char blen[2];
- unsigned char ulen[2];
- unsigned char flags[2];
-};
-
-static struct T6_keyBlock_hdr static_T6_keyBlock_hdr = {
- {0x89,0x01},
- {0x87,0x01},
- {0x00}
-};
-
-static struct CPRBX static_cprbx = {
- 0x00DC,
- 0x02,
- {0x00,0x00,0x00},
- {0x54,0x32},
- {0x00,0x00,0x00,0x00},
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- 0x00000000,
- {0x00,0x00,0x00,0x00},
- 0x00000000,
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- 0x0000,
- 0x0000,
- 0x00000000,
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- 0x00,
- 0x00,
- 0x0000,
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}
-};
-
-static struct function_and_rules_block static_pkd_function_and_rulesX_MCL2 = {
- {0x50,0x44},
- {0x00,0x0A},
- {'P','K','C','S','-','1','.','2'}
-};
-
-static struct function_and_rules_block static_pke_function_and_rulesX_MCL2 = {
- {0x50,0x4B},
- {0x00,0x0A},
- {'Z','E','R','O','-','P','A','D'}
-};
-
-static struct function_and_rules_block static_pkd_function_and_rulesX = {
- {0x50,0x44},
- {0x00,0x0A},
- {'Z','E','R','O','-','P','A','D'}
-};
-
-static struct function_and_rules_block static_pke_function_and_rulesX = {
- {0x50,0x4B},
- {0x00,0x0A},
- {'M','R','P',' ',' ',' ',' ',' '}
-};
-
-static unsigned char static_PKE_function_code[2] = {0x50, 0x4B};
-
-struct T6_keyBlock_hdrX {
- unsigned short blen;
- unsigned short ulen;
- unsigned char flags[2];
-};
-
-static unsigned char static_pad[256] = {
-0x1B,0x7B,0x5D,0xB5,0x75,0x01,0x3D,0xFD,0x8D,0xD1,0xC7,0x03,0x2D,0x09,0x23,0x57,
-0x89,0x49,0xB9,0x3F,0xBB,0x99,0x41,0x5B,0x75,0x21,0x7B,0x9D,0x3B,0x6B,0x51,0x39,
-0xBB,0x0D,0x35,0xB9,0x89,0x0F,0x93,0xA5,0x0B,0x47,0xF1,0xD3,0xBB,0xCB,0xF1,0x9D,
-0x23,0x73,0x71,0xFF,0xF3,0xF5,0x45,0xFB,0x61,0x29,0x23,0xFD,0xF1,0x29,0x3F,0x7F,
-0x17,0xB7,0x1B,0xA9,0x19,0xBD,0x57,0xA9,0xD7,0x95,0xA3,0xCB,0xED,0x1D,0xDB,0x45,
-0x7D,0x11,0xD1,0x51,0x1B,0xED,0x71,0xE9,0xB1,0xD1,0xAB,0xAB,0x21,0x2B,0x1B,0x9F,
-0x3B,0x9F,0xF7,0xF7,0xBD,0x63,0xEB,0xAD,0xDF,0xB3,0x6F,0x5B,0xDB,0x8D,0xA9,0x5D,
-0xE3,0x7D,0x77,0x49,0x47,0xF5,0xA7,0xFD,0xAB,0x2F,0x27,0x35,0x77,0xD3,0x49,0xC9,
-0x09,0xEB,0xB1,0xF9,0xBF,0x4B,0xCB,0x2B,0xEB,0xEB,0x05,0xFF,0x7D,0xC7,0x91,0x8B,
-0x09,0x83,0xB9,0xB9,0x69,0x33,0x39,0x6B,0x79,0x75,0x19,0xBF,0xBB,0x07,0x1D,0xBD,
-0x29,0xBF,0x39,0x95,0x93,0x1D,0x35,0xC7,0xC9,0x4D,0xE5,0x97,0x0B,0x43,0x9B,0xF1,
-0x16,0x93,0x03,0x1F,0xA5,0xFB,0xDB,0xF3,0x27,0x4F,0x27,0x61,0x05,0x1F,0xB9,0x23,
-0x2F,0xC3,0x81,0xA9,0x23,0x71,0x55,0x55,0xEB,0xED,0x41,0xE5,0xF3,0x11,0xF1,0x43,
-0x69,0x03,0xBD,0x0B,0x37,0x0F,0x51,0x8F,0x0B,0xB5,0x89,0x5B,0x67,0xA9,0xD9,0x4F,
-0x01,0xF9,0x21,0x77,0x37,0x73,0x79,0xC5,0x7F,0x51,0xC1,0xCF,0x97,0xA1,0x75,0xAD,
-0x35,0x9D,0xD3,0xD3,0xA7,0x9D,0x5D,0x41,0x6F,0x65,0x1B,0xCF,0xA9,0x87,0x91,0x09
-};
-
-static struct cca_private_ext_ME static_pvt_me_key = {
- {
- 0x1E,
- 0x00,
- 0x0183,
- {0x00,0x00,0x00,0x00}
- },
-
- {
- 0x02,
- 0x00,
- 0x016C,
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00},
- 0x00,
- 0x00,
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00},
- {0x80,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
- {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}
- },
-
- {
- 0x04,
- 0x00,
- 0x000F,
- {0x00,0x00},
- 0x0003,
- 0x0000,
- 0x0000,
- {0x01,0x00,0x01}
- }
-};
-
-static struct cca_public_key static_public_key = {
- {
- 0x1E,
- 0x00,
- 0x0000,
- {0x00,0x00,0x00,0x00}
- },
-
- {
- 0x04,
- 0x00,
- 0x0000,
- {0x00,0x00},
- 0x0000,
- 0x0000,
- 0x0000,
- {0x01,0x00,0x01}
- }
-};
-
-#define FIXED_TYPE6_ME_LEN 0x0000025F
-
-#define FIXED_TYPE6_ME_EN_LEN 0x000000F0
-
-#define FIXED_TYPE6_ME_LENX 0x000002CB
-
-#define FIXED_TYPE6_ME_EN_LENX 0x0000015C
-
-static struct cca_public_sec static_cca_pub_sec = {
- 0x04,
- 0x00,
- 0x000f,
- {0x00,0x00},
- 0x0003,
- 0x0000,
- 0x0000,
- {0x01,0x00,0x01}
-};
-
-#define FIXED_TYPE6_CR_LEN 0x00000177
-
-#define FIXED_TYPE6_CR_LENX 0x000001E3
-
-#define MAX_RESPONSE_SIZE 0x00000710
-
-#define MAX_RESPONSEX_SIZE 0x0000077C
-
-#define RESPONSE_CPRB_SIZE 0x000006B8
-#define RESPONSE_CPRBX_SIZE 0x00000724
-
-struct type50_hdr {
- u8 reserved1;
- u8 msg_type_code;
- u16 msg_len;
- u8 reserved2;
- u8 ignored;
- u16 reserved3;
-};
-
-#define TYPE50_TYPE_CODE 0x50
-
-#define TYPE50_MEB1_LEN (sizeof(struct type50_meb1_msg))
-#define TYPE50_MEB2_LEN (sizeof(struct type50_meb2_msg))
-#define TYPE50_CRB1_LEN (sizeof(struct type50_crb1_msg))
-#define TYPE50_CRB2_LEN (sizeof(struct type50_crb2_msg))
-
-#define TYPE50_MEB1_FMT 0x0001
-#define TYPE50_MEB2_FMT 0x0002
-#define TYPE50_CRB1_FMT 0x0011
-#define TYPE50_CRB2_FMT 0x0012
-
-struct type50_meb1_msg {
- struct type50_hdr header;
- u16 keyblock_type;
- u8 reserved[6];
- u8 exponent[128];
- u8 modulus[128];
- u8 message[128];
-};
-
-struct type50_meb2_msg {
- struct type50_hdr header;
- u16 keyblock_type;
- u8 reserved[6];
- u8 exponent[256];
- u8 modulus[256];
- u8 message[256];
-};
-
-struct type50_crb1_msg {
- struct type50_hdr header;
- u16 keyblock_type;
- u8 reserved[6];
- u8 p[64];
- u8 q[64];
- u8 dp[64];
- u8 dq[64];
- u8 u[64];
- u8 message[128];
-};
-
-struct type50_crb2_msg {
- struct type50_hdr header;
- u16 keyblock_type;
- u8 reserved[6];
- u8 p[128];
- u8 q[128];
- u8 dp[128];
- u8 dq[128];
- u8 u[128];
- u8 message[256];
-};
-
-union type50_msg {
- struct type50_meb1_msg meb1;
- struct type50_meb2_msg meb2;
- struct type50_crb1_msg crb1;
- struct type50_crb2_msg crb2;
-};
-
-struct type80_hdr {
- u8 reserved1;
- u8 type;
- u16 len;
- u8 code;
- u8 reserved2[3];
- u8 reserved3[8];
-};
-
-#define TYPE80_RSP_CODE 0x80
-
-struct error_hdr {
- unsigned char reserved1;
- unsigned char type;
- unsigned char reserved2[2];
- unsigned char reply_code;
- unsigned char reserved3[3];
-};
-
-#define TYPE82_RSP_CODE 0x82
-#define TYPE88_RSP_CODE 0x88
-
-#define REP82_ERROR_MACHINE_FAILURE 0x10
-#define REP82_ERROR_PREEMPT_FAILURE 0x12
-#define REP82_ERROR_CHECKPT_FAILURE 0x14
-#define REP82_ERROR_MESSAGE_TYPE 0x20
-#define REP82_ERROR_INVALID_COMM_CD 0x21
-#define REP82_ERROR_INVALID_MSG_LEN 0x23
-#define REP82_ERROR_RESERVD_FIELD 0x24
-#define REP82_ERROR_FORMAT_FIELD 0x29
-#define REP82_ERROR_INVALID_COMMAND 0x30
-#define REP82_ERROR_MALFORMED_MSG 0x40
-#define REP82_ERROR_RESERVED_FIELDO 0x50
-#define REP82_ERROR_WORD_ALIGNMENT 0x60
-#define REP82_ERROR_MESSAGE_LENGTH 0x80
-#define REP82_ERROR_OPERAND_INVALID 0x82
-#define REP82_ERROR_OPERAND_SIZE 0x84
-#define REP82_ERROR_EVEN_MOD_IN_OPND 0x85
-#define REP82_ERROR_RESERVED_FIELD 0x88
-#define REP82_ERROR_TRANSPORT_FAIL 0x90
-#define REP82_ERROR_PACKET_TRUNCATED 0xA0
-#define REP82_ERROR_ZERO_BUFFER_LEN 0xB0
-
-#define REP88_ERROR_MODULE_FAILURE 0x10
-#define REP88_ERROR_MODULE_TIMEOUT 0x11
-#define REP88_ERROR_MODULE_NOTINIT 0x13
-#define REP88_ERROR_MODULE_NOTAVAIL 0x14
-#define REP88_ERROR_MODULE_DISABLED 0x15
-#define REP88_ERROR_MODULE_IN_DIAGN 0x17
-#define REP88_ERROR_FASTPATH_DISABLD 0x19
-#define REP88_ERROR_MESSAGE_TYPE 0x20
-#define REP88_ERROR_MESSAGE_MALFORMD 0x22
-#define REP88_ERROR_MESSAGE_LENGTH 0x23
-#define REP88_ERROR_RESERVED_FIELD 0x24
-#define REP88_ERROR_KEY_TYPE 0x34
-#define REP88_ERROR_INVALID_KEY 0x82
-#define REP88_ERROR_OPERAND 0x84
-#define REP88_ERROR_OPERAND_EVEN_MOD 0x85
-
-#define CALLER_HEADER 12
-
-static inline int
-testq(int q_nr, int *q_depth, int *dev_type, struct ap_status_word *stat)
-{
- int ccode;
-
- asm volatile
-#ifdef CONFIG_64BIT
- (" llgfr 0,%4 \n"
- " slgr 1,1 \n"
- " lgr 2,1 \n"
- "0: .long 0xb2af0000 \n"
- "1: ipm %0 \n"
- " srl %0,28 \n"
- " iihh %0,0 \n"
- " iihl %0,0 \n"
- " lgr %1,1 \n"
- " lgr %3,2 \n"
- " srl %3,24 \n"
- " sll 2,24 \n"
- " srl 2,24 \n"
- " lgr %2,2 \n"
- "2: \n"
- ".section .fixup,\"ax\" \n"
- "3: \n"
- " lhi %0,%h5 \n"
- " jg 2b \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .align 8 \n"
- " .quad 0b,3b \n"
- " .quad 1b,3b \n"
- ".previous"
- :"=d" (ccode),"=d" (*stat),"=d" (*q_depth), "=d" (*dev_type)
- :"d" (q_nr), "K" (DEV_TSQ_EXCEPTION)
- :"cc","0","1","2","memory");
-#else
- (" lr 0,%4 \n"
- " slr 1,1 \n"
- " lr 2,1 \n"
- "0: .long 0xb2af0000 \n"
- "1: ipm %0 \n"
- " srl %0,28 \n"
- " lr %1,1 \n"
- " lr %3,2 \n"
- " srl %3,24 \n"
- " sll 2,24 \n"
- " srl 2,24 \n"
- " lr %2,2 \n"
- "2: \n"
- ".section .fixup,\"ax\" \n"
- "3: \n"
- " lhi %0,%h5 \n"
- " bras 1,4f \n"
- " .long 2b \n"
- "4: \n"
- " l 1,0(1) \n"
- " br 1 \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .align 4 \n"
- " .long 0b,3b \n"
- " .long 1b,3b \n"
- ".previous"
- :"=d" (ccode),"=d" (*stat),"=d" (*q_depth), "=d" (*dev_type)
- :"d" (q_nr), "K" (DEV_TSQ_EXCEPTION)
- :"cc","0","1","2","memory");
-#endif
- return ccode;
-}
-
-static inline int
-resetq(int q_nr, struct ap_status_word *stat_p)
-{
- int ccode;
-
- asm volatile
-#ifdef CONFIG_64BIT
- (" llgfr 0,%2 \n"
- " lghi 1,1 \n"
- " sll 1,24 \n"
- " or 0,1 \n"
- " slgr 1,1 \n"
- " lgr 2,1 \n"
- "0: .long 0xb2af0000 \n"
- "1: ipm %0 \n"
- " srl %0,28 \n"
- " iihh %0,0 \n"
- " iihl %0,0 \n"
- " lgr %1,1 \n"
- "2: \n"
- ".section .fixup,\"ax\" \n"
- "3: \n"
- " lhi %0,%h3 \n"
- " jg 2b \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .align 8 \n"
- " .quad 0b,3b \n"
- " .quad 1b,3b \n"
- ".previous"
- :"=d" (ccode),"=d" (*stat_p)
- :"d" (q_nr), "K" (DEV_RSQ_EXCEPTION)
- :"cc","0","1","2","memory");
-#else
- (" lr 0,%2 \n"
- " lhi 1,1 \n"
- " sll 1,24 \n"
- " or 0,1 \n"
- " slr 1,1 \n"
- " lr 2,1 \n"
- "0: .long 0xb2af0000 \n"
- "1: ipm %0 \n"
- " srl %0,28 \n"
- " lr %1,1 \n"
- "2: \n"
- ".section .fixup,\"ax\" \n"
- "3: \n"
- " lhi %0,%h3 \n"
- " bras 1,4f \n"
- " .long 2b \n"
- "4: \n"
- " l 1,0(1) \n"
- " br 1 \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .align 4 \n"
- " .long 0b,3b \n"
- " .long 1b,3b \n"
- ".previous"
- :"=d" (ccode),"=d" (*stat_p)
- :"d" (q_nr), "K" (DEV_RSQ_EXCEPTION)
- :"cc","0","1","2","memory");
-#endif
- return ccode;
-}
-
-static inline int
-sen(int msg_len, unsigned char *msg_ext, struct ap_status_word *stat)
-{
- int ccode;
-
- asm volatile
-#ifdef CONFIG_64BIT
- (" lgr 6,%3 \n"
- " llgfr 7,%2 \n"
- " llgt 0,0(6) \n"
- " lghi 1,64 \n"
- " sll 1,24 \n"
- " or 0,1 \n"
- " la 6,4(6) \n"
- " llgt 2,0(6) \n"
- " llgt 3,4(6) \n"
- " la 6,8(6) \n"
- " slr 1,1 \n"
- "0: .long 0xb2ad0026 \n"
- "1: brc 2,0b \n"
- " ipm %0 \n"
- " srl %0,28 \n"
- " iihh %0,0 \n"
- " iihl %0,0 \n"
- " lgr %1,1 \n"
- "2: \n"
- ".section .fixup,\"ax\" \n"
- "3: \n"
- " lhi %0,%h4 \n"
- " jg 2b \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .align 8 \n"
- " .quad 0b,3b \n"
- " .quad 1b,3b \n"
- ".previous"
- :"=d" (ccode),"=d" (*stat)
- :"d" (msg_len),"a" (msg_ext), "K" (DEV_SEN_EXCEPTION)
- :"cc","0","1","2","3","6","7","memory");
-#else
- (" lr 6,%3 \n"
- " lr 7,%2 \n"
- " l 0,0(6) \n"
- " lhi 1,64 \n"
- " sll 1,24 \n"
- " or 0,1 \n"
- " la 6,4(6) \n"
- " l 2,0(6) \n"
- " l 3,4(6) \n"
- " la 6,8(6) \n"
- " slr 1,1 \n"
- "0: .long 0xb2ad0026 \n"
- "1: brc 2,0b \n"
- " ipm %0 \n"
- " srl %0,28 \n"
- " lr %1,1 \n"
- "2: \n"
- ".section .fixup,\"ax\" \n"
- "3: \n"
- " lhi %0,%h4 \n"
- " bras 1,4f \n"
- " .long 2b \n"
- "4: \n"
- " l 1,0(1) \n"
- " br 1 \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .align 4 \n"
- " .long 0b,3b \n"
- " .long 1b,3b \n"
- ".previous"
- :"=d" (ccode),"=d" (*stat)
- :"d" (msg_len),"a" (msg_ext), "K" (DEV_SEN_EXCEPTION)
- :"cc","0","1","2","3","6","7","memory");
-#endif
- return ccode;
-}
-
-static inline int
-rec(int q_nr, int buff_l, unsigned char *rsp, unsigned char *id,
- struct ap_status_word *st)
-{
- int ccode;
-
- asm volatile
-#ifdef CONFIG_64BIT
- (" llgfr 0,%2 \n"
- " lgr 3,%4 \n"
- " lgr 6,%3 \n"
- " llgfr 7,%5 \n"
- " lghi 1,128 \n"
- " sll 1,24 \n"
- " or 0,1 \n"
- " slgr 1,1 \n"
- " lgr 2,1 \n"
- " lgr 4,1 \n"
- " lgr 5,1 \n"
- "0: .long 0xb2ae0046 \n"
- "1: brc 2,0b \n"
- " brc 4,0b \n"
- " ipm %0 \n"
- " srl %0,28 \n"
- " iihh %0,0 \n"
- " iihl %0,0 \n"
- " lgr %1,1 \n"
- " st 4,0(3) \n"
- " st 5,4(3) \n"
- "2: \n"
- ".section .fixup,\"ax\" \n"
- "3: \n"
- " lhi %0,%h6 \n"
- " jg 2b \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .align 8 \n"
- " .quad 0b,3b \n"
- " .quad 1b,3b \n"
- ".previous"
- :"=d"(ccode),"=d"(*st)
- :"d" (q_nr), "d" (rsp), "d" (id), "d" (buff_l), "K" (DEV_REC_EXCEPTION)
- :"cc","0","1","2","3","4","5","6","7","memory");
-#else
- (" lr 0,%2 \n"
- " lr 3,%4 \n"
- " lr 6,%3 \n"
- " lr 7,%5 \n"
- " lhi 1,128 \n"
- " sll 1,24 \n"
- " or 0,1 \n"
- " slr 1,1 \n"
- " lr 2,1 \n"
- " lr 4,1 \n"
- " lr 5,1 \n"
- "0: .long 0xb2ae0046 \n"
- "1: brc 2,0b \n"
- " brc 4,0b \n"
- " ipm %0 \n"
- " srl %0,28 \n"
- " lr %1,1 \n"
- " st 4,0(3) \n"
- " st 5,4(3) \n"
- "2: \n"
- ".section .fixup,\"ax\" \n"
- "3: \n"
- " lhi %0,%h6 \n"
- " bras 1,4f \n"
- " .long 2b \n"
- "4: \n"
- " l 1,0(1) \n"
- " br 1 \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .align 4 \n"
- " .long 0b,3b \n"
- " .long 1b,3b \n"
- ".previous"
- :"=d"(ccode),"=d"(*st)
- :"d" (q_nr), "d" (rsp), "d" (id), "d" (buff_l), "K" (DEV_REC_EXCEPTION)
- :"cc","0","1","2","3","4","5","6","7","memory");
-#endif
- return ccode;
-}
-
-static inline void
-itoLe2(int *i_p, unsigned char *lechars)
-{
- *lechars = *((unsigned char *) i_p + sizeof(int) - 1);
- *(lechars + 1) = *((unsigned char *) i_p + sizeof(int) - 2);
-}
-
-static inline void
-le2toI(unsigned char *lechars, int *i_p)
-{
- unsigned char *ic_p;
- *i_p = 0;
- ic_p = (unsigned char *) i_p;
- *(ic_p + 2) = *(lechars + 1);
- *(ic_p + 3) = *(lechars);
-}
-
-static inline int
-is_empty(unsigned char *ptr, int len)
-{
- return !memcmp(ptr, (unsigned char *) &static_pvt_me_key+60, len);
-}
-
-enum hdstat
-query_online(int deviceNr, int cdx, int resetNr, int *q_depth, int *dev_type)
-{
- int q_nr, i, t_depth, t_dev_type;
- enum devstat ccode;
- struct ap_status_word stat_word;
- enum hdstat stat;
- int break_out;
-
- q_nr = (deviceNr << SKIP_BITL) + cdx;
- stat = HD_BUSY;
- ccode = testq(q_nr, &t_depth, &t_dev_type, &stat_word);
- PDEBUG("ccode %d response_code %02X\n", ccode, stat_word.response_code);
- break_out = 0;
- for (i = 0; i < resetNr; i++) {
- if (ccode > 3) {
- PRINTKC("Exception testing device %d\n", i);
- return HD_TSQ_EXCEPTION;
- }
- switch (ccode) {
- case 0:
- PDEBUG("t_dev_type %d\n", t_dev_type);
- break_out = 1;
- stat = HD_ONLINE;
- *q_depth = t_depth + 1;
- switch (t_dev_type) {
- case PCICA_HW:
- *dev_type = PCICA;
- break;
- case PCICC_HW:
- *dev_type = PCICC;
- break;
- case PCIXCC_HW:
- *dev_type = PCIXCC_UNK;
- break;
- case CEX2C_HW:
- *dev_type = CEX2C;
- break;
- case CEX2A_HW:
- *dev_type = CEX2A;
- break;
- default:
- *dev_type = NILDEV;
- break;
- }
- PDEBUG("available device %d: Q depth = %d, dev "
- "type = %d, stat = %02X%02X%02X%02X\n",
- deviceNr, *q_depth, *dev_type,
- stat_word.q_stat_flags,
- stat_word.response_code,
- stat_word.reserved[0],
- stat_word.reserved[1]);
- break;
- case 3:
- switch (stat_word.response_code) {
- case AP_RESPONSE_NORMAL:
- stat = HD_ONLINE;
- break_out = 1;
- *q_depth = t_depth + 1;
- *dev_type = t_dev_type;
- PDEBUG("cc3, available device "
- "%d: Q depth = %d, dev "
- "type = %d, stat = "
- "%02X%02X%02X%02X\n",
- deviceNr, *q_depth,
- *dev_type,
- stat_word.q_stat_flags,
- stat_word.response_code,
- stat_word.reserved[0],
- stat_word.reserved[1]);
- break;
- case AP_RESPONSE_Q_NOT_AVAIL:
- stat = HD_NOT_THERE;
- break_out = 1;
- break;
- case AP_RESPONSE_RESET_IN_PROGRESS:
- PDEBUG("device %d in reset\n",
- deviceNr);
- break;
- case AP_RESPONSE_DECONFIGURED:
- stat = HD_DECONFIGURED;
- break_out = 1;
- break;
- case AP_RESPONSE_CHECKSTOPPED:
- stat = HD_CHECKSTOPPED;
- break_out = 1;
- break;
- case AP_RESPONSE_BUSY:
- PDEBUG("device %d busy\n",
- deviceNr);
- break;
- default:
- break;
- }
- break;
- default:
- stat = HD_NOT_THERE;
- break_out = 1;
- break;
- }
- if (break_out)
- break;
-
- udelay(5);
-
- ccode = testq(q_nr, &t_depth, &t_dev_type, &stat_word);
- }
- return stat;
-}
-
-enum devstat
-reset_device(int deviceNr, int cdx, int resetNr)
-{
- int q_nr, ccode = 0, dummy_qdepth, dummy_devType, i;
- struct ap_status_word stat_word;
- enum devstat stat;
- int break_out;
-
- q_nr = (deviceNr << SKIP_BITL) + cdx;
- stat = DEV_GONE;
- ccode = resetq(q_nr, &stat_word);
- if (ccode > 3)
- return DEV_RSQ_EXCEPTION;
-
- break_out = 0;
- for (i = 0; i < resetNr; i++) {
- switch (ccode) {
- case 0:
- stat = DEV_ONLINE;
- if (stat_word.q_stat_flags & AP_Q_STATUS_EMPTY)
- break_out = 1;
- break;
- case 3:
- switch (stat_word.response_code) {
- case AP_RESPONSE_NORMAL:
- stat = DEV_ONLINE;
- if (stat_word.q_stat_flags & AP_Q_STATUS_EMPTY)
- break_out = 1;
- break;
- case AP_RESPONSE_Q_NOT_AVAIL:
- case AP_RESPONSE_DECONFIGURED:
- case AP_RESPONSE_CHECKSTOPPED:
- stat = DEV_GONE;
- break_out = 1;
- break;
- case AP_RESPONSE_RESET_IN_PROGRESS:
- case AP_RESPONSE_BUSY:
- default:
- break;
- }
- break;
- default:
- stat = DEV_GONE;
- break_out = 1;
- break;
- }
- if (break_out == 1)
- break;
- udelay(5);
-
- ccode = testq(q_nr, &dummy_qdepth, &dummy_devType, &stat_word);
- if (ccode > 3) {
- stat = DEV_TSQ_EXCEPTION;
- break;
- }
- }
- PDEBUG("Number of testq's needed for reset: %d\n", i);
-
- if (i >= resetNr) {
- stat = DEV_GONE;
- }
-
- return stat;
-}
-
-#ifdef DEBUG_HYDRA_MSGS
-static inline void
-print_buffer(unsigned char *buffer, int bufflen)
-{
- int i;
- for (i = 0; i < bufflen; i += 16) {
- PRINTK("%04X: %02X%02X%02X%02X %02X%02X%02X%02X "
- "%02X%02X%02X%02X %02X%02X%02X%02X\n", i,
- buffer[i+0], buffer[i+1], buffer[i+2], buffer[i+3],
- buffer[i+4], buffer[i+5], buffer[i+6], buffer[i+7],
- buffer[i+8], buffer[i+9], buffer[i+10], buffer[i+11],
- buffer[i+12], buffer[i+13], buffer[i+14], buffer[i+15]);
- }
-}
-#endif
-
-enum devstat
-send_to_AP(int dev_nr, int cdx, int msg_len, unsigned char *msg_ext)
-{
- struct ap_status_word stat_word;
- enum devstat stat;
- int ccode;
- u32 *q_nr_p = (u32 *)msg_ext;
-
- *q_nr_p = (dev_nr << SKIP_BITL) + cdx;
- PDEBUG("msg_len passed to sen: %d\n", msg_len);
- PDEBUG("q number passed to sen: %02x%02x%02x%02x\n",
- msg_ext[0], msg_ext[1], msg_ext[2], msg_ext[3]);
- stat = DEV_GONE;
-
-#ifdef DEBUG_HYDRA_MSGS
- PRINTK("Request header: %02X%02X%02X%02X %02X%02X%02X%02X "
- "%02X%02X%02X%02X\n",
- msg_ext[0], msg_ext[1], msg_ext[2], msg_ext[3],
- msg_ext[4], msg_ext[5], msg_ext[6], msg_ext[7],
- msg_ext[8], msg_ext[9], msg_ext[10], msg_ext[11]);
- print_buffer(msg_ext+CALLER_HEADER, msg_len);
-#endif
-
- ccode = sen(msg_len, msg_ext, &stat_word);
- if (ccode > 3)
- return DEV_SEN_EXCEPTION;
-
- PDEBUG("nq cc: %u, st: %02x%02x%02x%02x\n",
- ccode, stat_word.q_stat_flags, stat_word.response_code,
- stat_word.reserved[0], stat_word.reserved[1]);
- switch (ccode) {
- case 0:
- stat = DEV_ONLINE;
- break;
- case 1:
- stat = DEV_GONE;
- break;
- case 3:
- switch (stat_word.response_code) {
- case AP_RESPONSE_NORMAL:
- stat = DEV_ONLINE;
- break;
- case AP_RESPONSE_Q_FULL:
- stat = DEV_QUEUE_FULL;
- break;
- default:
- stat = DEV_GONE;
- break;
- }
- break;
- default:
- stat = DEV_GONE;
- break;
- }
-
- return stat;
-}
-
-enum devstat
-receive_from_AP(int dev_nr, int cdx, int resplen, unsigned char *resp,
- unsigned char *psmid)
-{
- int ccode;
- struct ap_status_word stat_word;
- enum devstat stat;
-
- memset(resp, 0x00, 8);
-
- ccode = rec((dev_nr << SKIP_BITL) + cdx, resplen, resp, psmid,
- &stat_word);
- if (ccode > 3)
- return DEV_REC_EXCEPTION;
-
- PDEBUG("dq cc: %u, st: %02x%02x%02x%02x\n",
- ccode, stat_word.q_stat_flags, stat_word.response_code,
- stat_word.reserved[0], stat_word.reserved[1]);
-
- stat = DEV_GONE;
- switch (ccode) {
- case 0:
- stat = DEV_ONLINE;
-#ifdef DEBUG_HYDRA_MSGS
- print_buffer(resp, resplen);
-#endif
- break;
- case 3:
- switch (stat_word.response_code) {
- case AP_RESPONSE_NORMAL:
- stat = DEV_ONLINE;
- break;
- case AP_RESPONSE_NO_PENDING_REPLY:
- if (stat_word.q_stat_flags & AP_Q_STATUS_EMPTY)
- stat = DEV_EMPTY;
- else
- stat = DEV_NO_WORK;
- break;
- case AP_RESPONSE_INDEX_TOO_BIG:
- case AP_RESPONSE_NO_FIRST_PART:
- case AP_RESPONSE_MESSAGE_TOO_BIG:
- stat = DEV_BAD_MESSAGE;
- break;
- default:
- break;
- }
- break;
- default:
- break;
- }
-
- return stat;
-}
-
-static inline int
-pad_msg(unsigned char *buffer, int totalLength, int msgLength)
-{
- int pad_len;
-
- for (pad_len = 0; pad_len < (totalLength - msgLength); pad_len++)
- if (buffer[pad_len] != 0x00)
- break;
- pad_len -= 3;
- if (pad_len < 8)
- return SEN_PAD_ERROR;
-
- buffer[0] = 0x00;
- buffer[1] = 0x02;
-
- memcpy(buffer+2, static_pad, pad_len);
-
- buffer[pad_len + 2] = 0x00;
-
- return 0;
-}
-
-static inline int
-is_common_public_key(unsigned char *key, int len)
-{
- int i;
-
- for (i = 0; i < len; i++)
- if (key[i])
- break;
- key += i;
- len -= i;
- if (((len == 1) && (key[0] == 3)) ||
- ((len == 3) && (key[0] == 1) && (key[1] == 0) && (key[2] == 1)))
- return 1;
-
- return 0;
-}
-
-static int
-ICAMEX_msg_to_type4MEX_msg(struct ica_rsa_modexpo *icaMex_p, int *z90cMsg_l_p,
- union type4_msg *z90cMsg_p)
-{
- int mod_len, msg_size, mod_tgt_len, exp_tgt_len, inp_tgt_len;
- unsigned char *mod_tgt, *exp_tgt, *inp_tgt;
- union type4_msg *tmp_type4_msg;
-
- mod_len = icaMex_p->inputdatalength;
-
- msg_size = ((mod_len <= 128) ? TYPE4_SME_LEN : TYPE4_LME_LEN) +
- CALLER_HEADER;
-
- memset(z90cMsg_p, 0, msg_size);
-
- tmp_type4_msg = (union type4_msg *)
- ((unsigned char *) z90cMsg_p + CALLER_HEADER);
-
- tmp_type4_msg->sme.header.msg_type_code = TYPE4_TYPE_CODE;
- tmp_type4_msg->sme.header.request_code = TYPE4_REQU_CODE;
-
- if (mod_len <= 128) {
- tmp_type4_msg->sme.header.msg_fmt = TYPE4_SME_FMT;
- tmp_type4_msg->sme.header.msg_len = TYPE4_SME_LEN;
- mod_tgt = tmp_type4_msg->sme.modulus;
- mod_tgt_len = sizeof(tmp_type4_msg->sme.modulus);
- exp_tgt = tmp_type4_msg->sme.exponent;
- exp_tgt_len = sizeof(tmp_type4_msg->sme.exponent);
- inp_tgt = tmp_type4_msg->sme.message;
- inp_tgt_len = sizeof(tmp_type4_msg->sme.message);
- } else {
- tmp_type4_msg->lme.header.msg_fmt = TYPE4_LME_FMT;
- tmp_type4_msg->lme.header.msg_len = TYPE4_LME_LEN;
- mod_tgt = tmp_type4_msg->lme.modulus;
- mod_tgt_len = sizeof(tmp_type4_msg->lme.modulus);
- exp_tgt = tmp_type4_msg->lme.exponent;
- exp_tgt_len = sizeof(tmp_type4_msg->lme.exponent);
- inp_tgt = tmp_type4_msg->lme.message;
- inp_tgt_len = sizeof(tmp_type4_msg->lme.message);
- }
-
- mod_tgt += (mod_tgt_len - mod_len);
- if (copy_from_user(mod_tgt, icaMex_p->n_modulus, mod_len))
- return SEN_RELEASED;
- if (is_empty(mod_tgt, mod_len))
- return SEN_USER_ERROR;
- exp_tgt += (exp_tgt_len - mod_len);
- if (copy_from_user(exp_tgt, icaMex_p->b_key, mod_len))
- return SEN_RELEASED;
- if (is_empty(exp_tgt, mod_len))
- return SEN_USER_ERROR;
- inp_tgt += (inp_tgt_len - mod_len);
- if (copy_from_user(inp_tgt, icaMex_p->inputdata, mod_len))
- return SEN_RELEASED;
- if (is_empty(inp_tgt, mod_len))
- return SEN_USER_ERROR;
-
- *z90cMsg_l_p = msg_size - CALLER_HEADER;
-
- return 0;
-}
-
-static int
-ICACRT_msg_to_type4CRT_msg(struct ica_rsa_modexpo_crt *icaMsg_p,
- int *z90cMsg_l_p, union type4_msg *z90cMsg_p)
-{
- int mod_len, short_len, long_len, tmp_size, p_tgt_len, q_tgt_len,
- dp_tgt_len, dq_tgt_len, u_tgt_len, inp_tgt_len;
- unsigned char *p_tgt, *q_tgt, *dp_tgt, *dq_tgt, *u_tgt, *inp_tgt;
- union type4_msg *tmp_type4_msg;
-
- mod_len = icaMsg_p->inputdatalength;
- short_len = mod_len / 2;
- long_len = mod_len / 2 + 8;
-
- tmp_size = ((mod_len <= 128) ? TYPE4_SCR_LEN : TYPE4_LCR_LEN) +
- CALLER_HEADER;
-
- memset(z90cMsg_p, 0, tmp_size);
-
- tmp_type4_msg = (union type4_msg *)
- ((unsigned char *) z90cMsg_p + CALLER_HEADER);
-
- tmp_type4_msg->scr.header.msg_type_code = TYPE4_TYPE_CODE;
- tmp_type4_msg->scr.header.request_code = TYPE4_REQU_CODE;
- if (mod_len <= 128) {
- tmp_type4_msg->scr.header.msg_fmt = TYPE4_SCR_FMT;
- tmp_type4_msg->scr.header.msg_len = TYPE4_SCR_LEN;
- p_tgt = tmp_type4_msg->scr.p;
- p_tgt_len = sizeof(tmp_type4_msg->scr.p);
- q_tgt = tmp_type4_msg->scr.q;
- q_tgt_len = sizeof(tmp_type4_msg->scr.q);
- dp_tgt = tmp_type4_msg->scr.dp;
- dp_tgt_len = sizeof(tmp_type4_msg->scr.dp);
- dq_tgt = tmp_type4_msg->scr.dq;
- dq_tgt_len = sizeof(tmp_type4_msg->scr.dq);
- u_tgt = tmp_type4_msg->scr.u;
- u_tgt_len = sizeof(tmp_type4_msg->scr.u);
- inp_tgt = tmp_type4_msg->scr.message;
- inp_tgt_len = sizeof(tmp_type4_msg->scr.message);
- } else {
- tmp_type4_msg->lcr.header.msg_fmt = TYPE4_LCR_FMT;
- tmp_type4_msg->lcr.header.msg_len = TYPE4_LCR_LEN;
- p_tgt = tmp_type4_msg->lcr.p;
- p_tgt_len = sizeof(tmp_type4_msg->lcr.p);
- q_tgt = tmp_type4_msg->lcr.q;
- q_tgt_len = sizeof(tmp_type4_msg->lcr.q);
- dp_tgt = tmp_type4_msg->lcr.dp;
- dp_tgt_len = sizeof(tmp_type4_msg->lcr.dp);
- dq_tgt = tmp_type4_msg->lcr.dq;
- dq_tgt_len = sizeof(tmp_type4_msg->lcr.dq);
- u_tgt = tmp_type4_msg->lcr.u;
- u_tgt_len = sizeof(tmp_type4_msg->lcr.u);
- inp_tgt = tmp_type4_msg->lcr.message;
- inp_tgt_len = sizeof(tmp_type4_msg->lcr.message);
- }
-
- p_tgt += (p_tgt_len - long_len);
- if (copy_from_user(p_tgt, icaMsg_p->np_prime, long_len))
- return SEN_RELEASED;
- if (is_empty(p_tgt, long_len))
- return SEN_USER_ERROR;
- q_tgt += (q_tgt_len - short_len);
- if (copy_from_user(q_tgt, icaMsg_p->nq_prime, short_len))
- return SEN_RELEASED;
- if (is_empty(q_tgt, short_len))
- return SEN_USER_ERROR;
- dp_tgt += (dp_tgt_len - long_len);
- if (copy_from_user(dp_tgt, icaMsg_p->bp_key, long_len))
- return SEN_RELEASED;
- if (is_empty(dp_tgt, long_len))
- return SEN_USER_ERROR;
- dq_tgt += (dq_tgt_len - short_len);
- if (copy_from_user(dq_tgt, icaMsg_p->bq_key, short_len))
- return SEN_RELEASED;
- if (is_empty(dq_tgt, short_len))
- return SEN_USER_ERROR;
- u_tgt += (u_tgt_len - long_len);
- if (copy_from_user(u_tgt, icaMsg_p->u_mult_inv, long_len))
- return SEN_RELEASED;
- if (is_empty(u_tgt, long_len))
- return SEN_USER_ERROR;
- inp_tgt += (inp_tgt_len - mod_len);
- if (copy_from_user(inp_tgt, icaMsg_p->inputdata, mod_len))
- return SEN_RELEASED;
- if (is_empty(inp_tgt, mod_len))
- return SEN_USER_ERROR;
-
- *z90cMsg_l_p = tmp_size - CALLER_HEADER;
-
- return 0;
-}
-
-static int
-ICAMEX_msg_to_type6MEX_de_msg(struct ica_rsa_modexpo *icaMsg_p, int cdx,
- int *z90cMsg_l_p, struct type6_msg *z90cMsg_p)
-{
- int mod_len, vud_len, tmp_size, total_CPRB_len, parmBlock_l;
- unsigned char *temp;
- struct type6_hdr *tp6Hdr_p;
- struct CPRB *cprb_p;
- struct cca_private_ext_ME *key_p;
- static int deprecated_msg_count = 0;
-
- mod_len = icaMsg_p->inputdatalength;
- tmp_size = FIXED_TYPE6_ME_LEN + mod_len;
- total_CPRB_len = tmp_size - sizeof(struct type6_hdr);
- parmBlock_l = total_CPRB_len - sizeof(struct CPRB);
- tmp_size = 4*((tmp_size + 3)/4) + CALLER_HEADER;
-
- memset(z90cMsg_p, 0, tmp_size);
-
- temp = (unsigned char *)z90cMsg_p + CALLER_HEADER;
- memcpy(temp, &static_type6_hdr, sizeof(struct type6_hdr));
- tp6Hdr_p = (struct type6_hdr *)temp;
- tp6Hdr_p->ToCardLen1 = 4*((total_CPRB_len+3)/4);
- tp6Hdr_p->FromCardLen1 = RESPONSE_CPRB_SIZE;
-
- temp += sizeof(struct type6_hdr);
- memcpy(temp, &static_cprb, sizeof(struct CPRB));
- cprb_p = (struct CPRB *) temp;
- cprb_p->usage_domain[0]= (unsigned char)cdx;
- itoLe2(&parmBlock_l, cprb_p->req_parml);
- itoLe2((int *)&(tp6Hdr_p->FromCardLen1), cprb_p->rpl_parml);
-
- temp += sizeof(struct CPRB);
- memcpy(temp, &static_pkd_function_and_rules,
- sizeof(struct function_and_rules_block));
-
- temp += sizeof(struct function_and_rules_block);
- vud_len = 2 + icaMsg_p->inputdatalength;
- itoLe2(&vud_len, temp);
-
- temp += 2;
- if (copy_from_user(temp, icaMsg_p->inputdata, mod_len))
- return SEN_RELEASED;
- if (is_empty(temp, mod_len))
- return SEN_USER_ERROR;
-
- temp += mod_len;
- memcpy(temp, &static_T6_keyBlock_hdr, sizeof(struct T6_keyBlock_hdr));
-
- temp += sizeof(struct T6_keyBlock_hdr);
- memcpy(temp, &static_pvt_me_key, sizeof(struct cca_private_ext_ME));
- key_p = (struct cca_private_ext_ME *)temp;
- temp = key_p->pvtMESec.exponent + sizeof(key_p->pvtMESec.exponent)
- - mod_len;
- if (copy_from_user(temp, icaMsg_p->b_key, mod_len))
- return SEN_RELEASED;
- if (is_empty(temp, mod_len))
- return SEN_USER_ERROR;
-
- if (is_common_public_key(temp, mod_len)) {
- if (deprecated_msg_count < 20) {
- PRINTK("Common public key used for modex decrypt\n");
- deprecated_msg_count++;
- if (deprecated_msg_count == 20)
- PRINTK("No longer issuing messages about common"
- " public key for modex decrypt.\n");
- }
- return SEN_NOT_AVAIL;
- }
-
- temp = key_p->pvtMESec.modulus + sizeof(key_p->pvtMESec.modulus)
- - mod_len;
- if (copy_from_user(temp, icaMsg_p->n_modulus, mod_len))
- return SEN_RELEASED;
- if (is_empty(temp, mod_len))
- return SEN_USER_ERROR;
-
- key_p->pubMESec.modulus_bit_len = 8 * mod_len;
-
- *z90cMsg_l_p = tmp_size - CALLER_HEADER;
-
- return 0;
-}
-
-static int
-ICAMEX_msg_to_type6MEX_en_msg(struct ica_rsa_modexpo *icaMsg_p, int cdx,
- int *z90cMsg_l_p, struct type6_msg *z90cMsg_p)
-{
- int mod_len, vud_len, exp_len, key_len;
- int pad_len, tmp_size, total_CPRB_len, parmBlock_l, i;
- unsigned char *temp_exp, *exp_p, *temp;
- struct type6_hdr *tp6Hdr_p;
- struct CPRB *cprb_p;
- struct cca_public_key *key_p;
- struct T6_keyBlock_hdr *keyb_p;
-
- temp_exp = kmalloc(256, GFP_KERNEL);
- if (!temp_exp)
- return EGETBUFF;
- mod_len = icaMsg_p->inputdatalength;
- if (copy_from_user(temp_exp, icaMsg_p->b_key, mod_len)) {
- kfree(temp_exp);
- return SEN_RELEASED;
- }
- if (is_empty(temp_exp, mod_len)) {
- kfree(temp_exp);
- return SEN_USER_ERROR;
- }
-
- exp_p = temp_exp;
- for (i = 0; i < mod_len; i++)
- if (exp_p[i])
- break;
- if (i >= mod_len) {
- kfree(temp_exp);
- return SEN_USER_ERROR;
- }
-
- exp_len = mod_len - i;
- exp_p += i;
-
- PDEBUG("exp_len after computation: %08x\n", exp_len);
- tmp_size = FIXED_TYPE6_ME_EN_LEN + 2 * mod_len + exp_len;
- total_CPRB_len = tmp_size - sizeof(struct type6_hdr);
- parmBlock_l = total_CPRB_len - sizeof(struct CPRB);
- tmp_size = 4*((tmp_size + 3)/4) + CALLER_HEADER;
-
- vud_len = 2 + mod_len;
- memset(z90cMsg_p, 0, tmp_size);
-
- temp = (unsigned char *)z90cMsg_p + CALLER_HEADER;
- memcpy(temp, &static_type6_hdr, sizeof(struct type6_hdr));
- tp6Hdr_p = (struct type6_hdr *)temp;
- tp6Hdr_p->ToCardLen1 = 4*((total_CPRB_len+3)/4);
- tp6Hdr_p->FromCardLen1 = RESPONSE_CPRB_SIZE;
- memcpy(tp6Hdr_p->function_code, static_PKE_function_code,
- sizeof(static_PKE_function_code));
- temp += sizeof(struct type6_hdr);
- memcpy(temp, &static_cprb, sizeof(struct CPRB));
- cprb_p = (struct CPRB *) temp;
- cprb_p->usage_domain[0]= (unsigned char)cdx;
- itoLe2((int *)&(tp6Hdr_p->FromCardLen1), cprb_p->rpl_parml);
- temp += sizeof(struct CPRB);
- memcpy(temp, &static_pke_function_and_rules,
- sizeof(struct function_and_rules_block));
- temp += sizeof(struct function_and_rules_block);
- temp += 2;
- if (copy_from_user(temp, icaMsg_p->inputdata, mod_len)) {
- kfree(temp_exp);
- return SEN_RELEASED;
- }
- if (is_empty(temp, mod_len)) {
- kfree(temp_exp);
- return SEN_USER_ERROR;
- }
- if ((temp[0] != 0x00) || (temp[1] != 0x02)) {
- kfree(temp_exp);
- return SEN_NOT_AVAIL;
- }
- for (i = 2; i < mod_len; i++)
- if (temp[i] == 0x00)
- break;
- if ((i < 9) || (i > (mod_len - 2))) {
- kfree(temp_exp);
- return SEN_NOT_AVAIL;
- }
- pad_len = i + 1;
- vud_len = mod_len - pad_len;
- memmove(temp, temp+pad_len, vud_len);
- temp -= 2;
- vud_len += 2;
- itoLe2(&vud_len, temp);
- temp += (vud_len);
- keyb_p = (struct T6_keyBlock_hdr *)temp;
- temp += sizeof(struct T6_keyBlock_hdr);
- memcpy(temp, &static_public_key, sizeof(static_public_key));
- key_p = (struct cca_public_key *)temp;
- temp = key_p->pubSec.exponent;
- memcpy(temp, exp_p, exp_len);
- kfree(temp_exp);
- temp += exp_len;
- if (copy_from_user(temp, icaMsg_p->n_modulus, mod_len))
- return SEN_RELEASED;
- if (is_empty(temp, mod_len))
- return SEN_USER_ERROR;
- key_p->pubSec.modulus_bit_len = 8 * mod_len;
- key_p->pubSec.modulus_byte_len = mod_len;
- key_p->pubSec.exponent_len = exp_len;
- key_p->pubSec.section_length = CALLER_HEADER + mod_len + exp_len;
- key_len = key_p->pubSec.section_length + sizeof(struct cca_token_hdr);
- key_p->pubHdr.token_length = key_len;
- key_len += 4;
- itoLe2(&key_len, keyb_p->ulen);
- key_len += 2;
- itoLe2(&key_len, keyb_p->blen);
- parmBlock_l -= pad_len;
- itoLe2(&parmBlock_l, cprb_p->req_parml);
- *z90cMsg_l_p = tmp_size - CALLER_HEADER;
-
- return 0;
-}
-
-static int
-ICACRT_msg_to_type6CRT_msg(struct ica_rsa_modexpo_crt *icaMsg_p, int cdx,
- int *z90cMsg_l_p, struct type6_msg *z90cMsg_p)
-{
- int mod_len, vud_len, tmp_size, total_CPRB_len, parmBlock_l, short_len;
- int long_len, pad_len, keyPartsLen, tmp_l;
- unsigned char *tgt_p, *temp;
- struct type6_hdr *tp6Hdr_p;
- struct CPRB *cprb_p;
- struct cca_token_hdr *keyHdr_p;
- struct cca_pvt_ext_CRT_sec *pvtSec_p;
- struct cca_public_sec *pubSec_p;
-
- mod_len = icaMsg_p->inputdatalength;
- short_len = mod_len / 2;
- long_len = 8 + short_len;
- keyPartsLen = 3 * long_len + 2 * short_len;
- pad_len = (8 - (keyPartsLen % 8)) % 8;
- keyPartsLen += pad_len + mod_len;
- tmp_size = FIXED_TYPE6_CR_LEN + keyPartsLen + mod_len;
- total_CPRB_len = tmp_size - sizeof(struct type6_hdr);
- parmBlock_l = total_CPRB_len - sizeof(struct CPRB);
- vud_len = 2 + mod_len;
- tmp_size = 4*((tmp_size + 3)/4) + CALLER_HEADER;
-
- memset(z90cMsg_p, 0, tmp_size);
- tgt_p = (unsigned char *)z90cMsg_p + CALLER_HEADER;
- memcpy(tgt_p, &static_type6_hdr, sizeof(struct type6_hdr));
- tp6Hdr_p = (struct type6_hdr *)tgt_p;
- tp6Hdr_p->ToCardLen1 = 4*((total_CPRB_len+3)/4);
- tp6Hdr_p->FromCardLen1 = RESPONSE_CPRB_SIZE;
- tgt_p += sizeof(struct type6_hdr);
- cprb_p = (struct CPRB *) tgt_p;
- memcpy(tgt_p, &static_cprb, sizeof(struct CPRB));
- cprb_p->usage_domain[0]= *((unsigned char *)(&(cdx))+3);
- itoLe2(&parmBlock_l, cprb_p->req_parml);
- memcpy(cprb_p->rpl_parml, cprb_p->req_parml,
- sizeof(cprb_p->req_parml));
- tgt_p += sizeof(struct CPRB);
- memcpy(tgt_p, &static_pkd_function_and_rules,
- sizeof(struct function_and_rules_block));
- tgt_p += sizeof(struct function_and_rules_block);
- itoLe2(&vud_len, tgt_p);
- tgt_p += 2;
- if (copy_from_user(tgt_p, icaMsg_p->inputdata, mod_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, mod_len))
- return SEN_USER_ERROR;
- tgt_p += mod_len;
- tmp_l = sizeof(struct T6_keyBlock_hdr) + sizeof(struct cca_token_hdr) +
- sizeof(struct cca_pvt_ext_CRT_sec) + 0x0F + keyPartsLen;
- itoLe2(&tmp_l, tgt_p);
- temp = tgt_p + 2;
- tmp_l -= 2;
- itoLe2(&tmp_l, temp);
- tgt_p += sizeof(struct T6_keyBlock_hdr);
- keyHdr_p = (struct cca_token_hdr *)tgt_p;
- keyHdr_p->token_identifier = CCA_TKN_HDR_ID_EXT;
- tmp_l -= 4;
- keyHdr_p->token_length = tmp_l;
- tgt_p += sizeof(struct cca_token_hdr);
- pvtSec_p = (struct cca_pvt_ext_CRT_sec *)tgt_p;
- pvtSec_p->section_identifier = CCA_PVT_EXT_CRT_SEC_ID_PVT;
- pvtSec_p->section_length =
- sizeof(struct cca_pvt_ext_CRT_sec) + keyPartsLen;
- pvtSec_p->key_format = CCA_PVT_EXT_CRT_SEC_FMT_CL;
- pvtSec_p->key_use_flags[0] = CCA_PVT_USAGE_ALL;
- pvtSec_p->p_len = long_len;
- pvtSec_p->q_len = short_len;
- pvtSec_p->dp_len = long_len;
- pvtSec_p->dq_len = short_len;
- pvtSec_p->u_len = long_len;
- pvtSec_p->mod_len = mod_len;
- pvtSec_p->pad_len = pad_len;
- tgt_p += sizeof(struct cca_pvt_ext_CRT_sec);
- if (copy_from_user(tgt_p, icaMsg_p->np_prime, long_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, long_len))
- return SEN_USER_ERROR;
- tgt_p += long_len;
- if (copy_from_user(tgt_p, icaMsg_p->nq_prime, short_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, short_len))
- return SEN_USER_ERROR;
- tgt_p += short_len;
- if (copy_from_user(tgt_p, icaMsg_p->bp_key, long_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, long_len))
- return SEN_USER_ERROR;
- tgt_p += long_len;
- if (copy_from_user(tgt_p, icaMsg_p->bq_key, short_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, short_len))
- return SEN_USER_ERROR;
- tgt_p += short_len;
- if (copy_from_user(tgt_p, icaMsg_p->u_mult_inv, long_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, long_len))
- return SEN_USER_ERROR;
- tgt_p += long_len;
- tgt_p += pad_len;
- memset(tgt_p, 0xFF, mod_len);
- tgt_p += mod_len;
- memcpy(tgt_p, &static_cca_pub_sec, sizeof(struct cca_public_sec));
- pubSec_p = (struct cca_public_sec *) tgt_p;
- pubSec_p->modulus_bit_len = 8 * mod_len;
- *z90cMsg_l_p = tmp_size - CALLER_HEADER;
-
- return 0;
-}
-
-static int
-ICAMEX_msg_to_type6MEX_msgX(struct ica_rsa_modexpo *icaMsg_p, int cdx,
- int *z90cMsg_l_p, struct type6_msg *z90cMsg_p,
- int dev_type)
-{
- int mod_len, exp_len, vud_len, tmp_size, total_CPRB_len, parmBlock_l;
- int key_len, i;
- unsigned char *temp_exp, *tgt_p, *temp, *exp_p;
- struct type6_hdr *tp6Hdr_p;
- struct CPRBX *cprbx_p;
- struct cca_public_key *key_p;
- struct T6_keyBlock_hdrX *keyb_p;
-
- temp_exp = kmalloc(256, GFP_KERNEL);
- if (!temp_exp)
- return EGETBUFF;
- mod_len = icaMsg_p->inputdatalength;
- if (copy_from_user(temp_exp, icaMsg_p->b_key, mod_len)) {
- kfree(temp_exp);
- return SEN_RELEASED;
- }
- if (is_empty(temp_exp, mod_len)) {
- kfree(temp_exp);
- return SEN_USER_ERROR;
- }
- exp_p = temp_exp;
- for (i = 0; i < mod_len; i++)
- if (exp_p[i])
- break;
- if (i >= mod_len) {
- kfree(temp_exp);
- return SEN_USER_ERROR;
- }
- exp_len = mod_len - i;
- exp_p += i;
- PDEBUG("exp_len after computation: %08x\n", exp_len);
- tmp_size = FIXED_TYPE6_ME_EN_LENX + 2 * mod_len + exp_len;
- total_CPRB_len = tmp_size - sizeof(struct type6_hdr);
- parmBlock_l = total_CPRB_len - sizeof(struct CPRBX);
- tmp_size = tmp_size + CALLER_HEADER;
- vud_len = 2 + mod_len;
- memset(z90cMsg_p, 0, tmp_size);
- tgt_p = (unsigned char *)z90cMsg_p + CALLER_HEADER;
- memcpy(tgt_p, &static_type6_hdrX, sizeof(struct type6_hdr));
- tp6Hdr_p = (struct type6_hdr *)tgt_p;
- tp6Hdr_p->ToCardLen1 = total_CPRB_len;
- tp6Hdr_p->FromCardLen1 = RESPONSE_CPRBX_SIZE;
- memcpy(tp6Hdr_p->function_code, static_PKE_function_code,
- sizeof(static_PKE_function_code));
- tgt_p += sizeof(struct type6_hdr);
- memcpy(tgt_p, &static_cprbx, sizeof(struct CPRBX));
- cprbx_p = (struct CPRBX *) tgt_p;
- cprbx_p->domain = (unsigned short)cdx;
- cprbx_p->rpl_msgbl = RESPONSE_CPRBX_SIZE;
- tgt_p += sizeof(struct CPRBX);
- if (dev_type == PCIXCC_MCL2)
- memcpy(tgt_p, &static_pke_function_and_rulesX_MCL2,
- sizeof(struct function_and_rules_block));
- else
- memcpy(tgt_p, &static_pke_function_and_rulesX,
- sizeof(struct function_and_rules_block));
- tgt_p += sizeof(struct function_and_rules_block);
-
- tgt_p += 2;
- if (copy_from_user(tgt_p, icaMsg_p->inputdata, mod_len)) {
- kfree(temp_exp);
- return SEN_RELEASED;
- }
- if (is_empty(tgt_p, mod_len)) {
- kfree(temp_exp);
- return SEN_USER_ERROR;
- }
- tgt_p -= 2;
- *((short *)tgt_p) = (short) vud_len;
- tgt_p += vud_len;
- keyb_p = (struct T6_keyBlock_hdrX *)tgt_p;
- tgt_p += sizeof(struct T6_keyBlock_hdrX);
- memcpy(tgt_p, &static_public_key, sizeof(static_public_key));
- key_p = (struct cca_public_key *)tgt_p;
- temp = key_p->pubSec.exponent;
- memcpy(temp, exp_p, exp_len);
- kfree(temp_exp);
- temp += exp_len;
- if (copy_from_user(temp, icaMsg_p->n_modulus, mod_len))
- return SEN_RELEASED;
- if (is_empty(temp, mod_len))
- return SEN_USER_ERROR;
- key_p->pubSec.modulus_bit_len = 8 * mod_len;
- key_p->pubSec.modulus_byte_len = mod_len;
- key_p->pubSec.exponent_len = exp_len;
- key_p->pubSec.section_length = CALLER_HEADER + mod_len + exp_len;
- key_len = key_p->pubSec.section_length + sizeof(struct cca_token_hdr);
- key_p->pubHdr.token_length = key_len;
- key_len += 4;
- keyb_p->ulen = (unsigned short)key_len;
- key_len += 2;
- keyb_p->blen = (unsigned short)key_len;
- cprbx_p->req_parml = parmBlock_l;
- *z90cMsg_l_p = tmp_size - CALLER_HEADER;
-
- return 0;
-}
-
-static int
-ICACRT_msg_to_type6CRT_msgX(struct ica_rsa_modexpo_crt *icaMsg_p, int cdx,
- int *z90cMsg_l_p, struct type6_msg *z90cMsg_p,
- int dev_type)
-{
- int mod_len, vud_len, tmp_size, total_CPRB_len, parmBlock_l, short_len;
- int long_len, pad_len, keyPartsLen, tmp_l;
- unsigned char *tgt_p, *temp;
- struct type6_hdr *tp6Hdr_p;
- struct CPRBX *cprbx_p;
- struct cca_token_hdr *keyHdr_p;
- struct cca_pvt_ext_CRT_sec *pvtSec_p;
- struct cca_public_sec *pubSec_p;
-
- mod_len = icaMsg_p->inputdatalength;
- short_len = mod_len / 2;
- long_len = 8 + short_len;
- keyPartsLen = 3 * long_len + 2 * short_len;
- pad_len = (8 - (keyPartsLen % 8)) % 8;
- keyPartsLen += pad_len + mod_len;
- tmp_size = FIXED_TYPE6_CR_LENX + keyPartsLen + mod_len;
- total_CPRB_len = tmp_size - sizeof(struct type6_hdr);
- parmBlock_l = total_CPRB_len - sizeof(struct CPRBX);
- vud_len = 2 + mod_len;
- tmp_size = tmp_size + CALLER_HEADER;
- memset(z90cMsg_p, 0, tmp_size);
- tgt_p = (unsigned char *)z90cMsg_p + CALLER_HEADER;
- memcpy(tgt_p, &static_type6_hdrX, sizeof(struct type6_hdr));
- tp6Hdr_p = (struct type6_hdr *)tgt_p;
- tp6Hdr_p->ToCardLen1 = total_CPRB_len;
- tp6Hdr_p->FromCardLen1 = RESPONSE_CPRBX_SIZE;
- tgt_p += sizeof(struct type6_hdr);
- cprbx_p = (struct CPRBX *) tgt_p;
- memcpy(tgt_p, &static_cprbx, sizeof(struct CPRBX));
- cprbx_p->domain = (unsigned short)cdx;
- cprbx_p->req_parml = parmBlock_l;
- cprbx_p->rpl_msgbl = parmBlock_l;
- tgt_p += sizeof(struct CPRBX);
- if (dev_type == PCIXCC_MCL2)
- memcpy(tgt_p, &static_pkd_function_and_rulesX_MCL2,
- sizeof(struct function_and_rules_block));
- else
- memcpy(tgt_p, &static_pkd_function_and_rulesX,
- sizeof(struct function_and_rules_block));
- tgt_p += sizeof(struct function_and_rules_block);
- *((short *)tgt_p) = (short) vud_len;
- tgt_p += 2;
- if (copy_from_user(tgt_p, icaMsg_p->inputdata, mod_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, mod_len))
- return SEN_USER_ERROR;
- tgt_p += mod_len;
- tmp_l = sizeof(struct T6_keyBlock_hdr) + sizeof(struct cca_token_hdr) +
- sizeof(struct cca_pvt_ext_CRT_sec) + 0x0F + keyPartsLen;
- *((short *)tgt_p) = (short) tmp_l;
- temp = tgt_p + 2;
- tmp_l -= 2;
- *((short *)temp) = (short) tmp_l;
- tgt_p += sizeof(struct T6_keyBlock_hdr);
- keyHdr_p = (struct cca_token_hdr *)tgt_p;
- keyHdr_p->token_identifier = CCA_TKN_HDR_ID_EXT;
- tmp_l -= 4;
- keyHdr_p->token_length = tmp_l;
- tgt_p += sizeof(struct cca_token_hdr);
- pvtSec_p = (struct cca_pvt_ext_CRT_sec *)tgt_p;
- pvtSec_p->section_identifier = CCA_PVT_EXT_CRT_SEC_ID_PVT;
- pvtSec_p->section_length =
- sizeof(struct cca_pvt_ext_CRT_sec) + keyPartsLen;
- pvtSec_p->key_format = CCA_PVT_EXT_CRT_SEC_FMT_CL;
- pvtSec_p->key_use_flags[0] = CCA_PVT_USAGE_ALL;
- pvtSec_p->p_len = long_len;
- pvtSec_p->q_len = short_len;
- pvtSec_p->dp_len = long_len;
- pvtSec_p->dq_len = short_len;
- pvtSec_p->u_len = long_len;
- pvtSec_p->mod_len = mod_len;
- pvtSec_p->pad_len = pad_len;
- tgt_p += sizeof(struct cca_pvt_ext_CRT_sec);
- if (copy_from_user(tgt_p, icaMsg_p->np_prime, long_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, long_len))
- return SEN_USER_ERROR;
- tgt_p += long_len;
- if (copy_from_user(tgt_p, icaMsg_p->nq_prime, short_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, short_len))
- return SEN_USER_ERROR;
- tgt_p += short_len;
- if (copy_from_user(tgt_p, icaMsg_p->bp_key, long_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, long_len))
- return SEN_USER_ERROR;
- tgt_p += long_len;
- if (copy_from_user(tgt_p, icaMsg_p->bq_key, short_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, short_len))
- return SEN_USER_ERROR;
- tgt_p += short_len;
- if (copy_from_user(tgt_p, icaMsg_p->u_mult_inv, long_len))
- return SEN_RELEASED;
- if (is_empty(tgt_p, long_len))
- return SEN_USER_ERROR;
- tgt_p += long_len;
- tgt_p += pad_len;
- memset(tgt_p, 0xFF, mod_len);
- tgt_p += mod_len;
- memcpy(tgt_p, &static_cca_pub_sec, sizeof(struct cca_public_sec));
- pubSec_p = (struct cca_public_sec *) tgt_p;
- pubSec_p->modulus_bit_len = 8 * mod_len;
- *z90cMsg_l_p = tmp_size - CALLER_HEADER;
-
- return 0;
-}
-
-static int
-ICAMEX_msg_to_type50MEX_msg(struct ica_rsa_modexpo *icaMex_p, int *z90cMsg_l_p,
- union type50_msg *z90cMsg_p)
-{
- int mod_len, msg_size, mod_tgt_len, exp_tgt_len, inp_tgt_len;
- unsigned char *mod_tgt, *exp_tgt, *inp_tgt;
- union type50_msg *tmp_type50_msg;
-
- mod_len = icaMex_p->inputdatalength;
-
- msg_size = ((mod_len <= 128) ? TYPE50_MEB1_LEN : TYPE50_MEB2_LEN) +
- CALLER_HEADER;
-
- memset(z90cMsg_p, 0, msg_size);
-
- tmp_type50_msg = (union type50_msg *)
- ((unsigned char *) z90cMsg_p + CALLER_HEADER);
-
- tmp_type50_msg->meb1.header.msg_type_code = TYPE50_TYPE_CODE;
-
- if (mod_len <= 128) {
- tmp_type50_msg->meb1.header.msg_len = TYPE50_MEB1_LEN;
- tmp_type50_msg->meb1.keyblock_type = TYPE50_MEB1_FMT;
- mod_tgt = tmp_type50_msg->meb1.modulus;
- mod_tgt_len = sizeof(tmp_type50_msg->meb1.modulus);
- exp_tgt = tmp_type50_msg->meb1.exponent;
- exp_tgt_len = sizeof(tmp_type50_msg->meb1.exponent);
- inp_tgt = tmp_type50_msg->meb1.message;
- inp_tgt_len = sizeof(tmp_type50_msg->meb1.message);
- } else {
- tmp_type50_msg->meb2.header.msg_len = TYPE50_MEB2_LEN;
- tmp_type50_msg->meb2.keyblock_type = TYPE50_MEB2_FMT;
- mod_tgt = tmp_type50_msg->meb2.modulus;
- mod_tgt_len = sizeof(tmp_type50_msg->meb2.modulus);
- exp_tgt = tmp_type50_msg->meb2.exponent;
- exp_tgt_len = sizeof(tmp_type50_msg->meb2.exponent);
- inp_tgt = tmp_type50_msg->meb2.message;
- inp_tgt_len = sizeof(tmp_type50_msg->meb2.message);
- }
-
- mod_tgt += (mod_tgt_len - mod_len);
- if (copy_from_user(mod_tgt, icaMex_p->n_modulus, mod_len))
- return SEN_RELEASED;
- if (is_empty(mod_tgt, mod_len))
- return SEN_USER_ERROR;
- exp_tgt += (exp_tgt_len - mod_len);
- if (copy_from_user(exp_tgt, icaMex_p->b_key, mod_len))
- return SEN_RELEASED;
- if (is_empty(exp_tgt, mod_len))
- return SEN_USER_ERROR;
- inp_tgt += (inp_tgt_len - mod_len);
- if (copy_from_user(inp_tgt, icaMex_p->inputdata, mod_len))
- return SEN_RELEASED;
- if (is_empty(inp_tgt, mod_len))
- return SEN_USER_ERROR;
-
- *z90cMsg_l_p = msg_size - CALLER_HEADER;
-
- return 0;
-}
-
-static int
-ICACRT_msg_to_type50CRT_msg(struct ica_rsa_modexpo_crt *icaMsg_p,
- int *z90cMsg_l_p, union type50_msg *z90cMsg_p)
-{
- int mod_len, short_len, long_len, tmp_size, p_tgt_len, q_tgt_len,
- dp_tgt_len, dq_tgt_len, u_tgt_len, inp_tgt_len, long_offset;
- unsigned char *p_tgt, *q_tgt, *dp_tgt, *dq_tgt, *u_tgt, *inp_tgt,
- temp[8];
- union type50_msg *tmp_type50_msg;
-
- mod_len = icaMsg_p->inputdatalength;
- short_len = mod_len / 2;
- long_len = mod_len / 2 + 8;
- long_offset = 0;
-
- if (long_len > 128) {
- memset(temp, 0x00, sizeof(temp));
- if (copy_from_user(temp, icaMsg_p->np_prime, long_len-128))
- return SEN_RELEASED;
- if (!is_empty(temp, 8))
- return SEN_NOT_AVAIL;
- if (copy_from_user(temp, icaMsg_p->bp_key, long_len-128))
- return SEN_RELEASED;
- if (!is_empty(temp, 8))
- return SEN_NOT_AVAIL;
- if (copy_from_user(temp, icaMsg_p->u_mult_inv, long_len-128))
- return SEN_RELEASED;
- if (!is_empty(temp, 8))
- return SEN_NOT_AVAIL;
- long_offset = long_len - 128;
- long_len = 128;
- }
-
- tmp_size = ((long_len <= 64) ? TYPE50_CRB1_LEN : TYPE50_CRB2_LEN) +
- CALLER_HEADER;
-
- memset(z90cMsg_p, 0, tmp_size);
-
- tmp_type50_msg = (union type50_msg *)
- ((unsigned char *) z90cMsg_p + CALLER_HEADER);
-
- tmp_type50_msg->crb1.header.msg_type_code = TYPE50_TYPE_CODE;
- if (long_len <= 64) {
- tmp_type50_msg->crb1.header.msg_len = TYPE50_CRB1_LEN;
- tmp_type50_msg->crb1.keyblock_type = TYPE50_CRB1_FMT;
- p_tgt = tmp_type50_msg->crb1.p;
- p_tgt_len = sizeof(tmp_type50_msg->crb1.p);
- q_tgt = tmp_type50_msg->crb1.q;
- q_tgt_len = sizeof(tmp_type50_msg->crb1.q);
- dp_tgt = tmp_type50_msg->crb1.dp;
- dp_tgt_len = sizeof(tmp_type50_msg->crb1.dp);
- dq_tgt = tmp_type50_msg->crb1.dq;
- dq_tgt_len = sizeof(tmp_type50_msg->crb1.dq);
- u_tgt = tmp_type50_msg->crb1.u;
- u_tgt_len = sizeof(tmp_type50_msg->crb1.u);
- inp_tgt = tmp_type50_msg->crb1.message;
- inp_tgt_len = sizeof(tmp_type50_msg->crb1.message);
- } else {
- tmp_type50_msg->crb2.header.msg_len = TYPE50_CRB2_LEN;
- tmp_type50_msg->crb2.keyblock_type = TYPE50_CRB2_FMT;
- p_tgt = tmp_type50_msg->crb2.p;
- p_tgt_len = sizeof(tmp_type50_msg->crb2.p);
- q_tgt = tmp_type50_msg->crb2.q;
- q_tgt_len = sizeof(tmp_type50_msg->crb2.q);
- dp_tgt = tmp_type50_msg->crb2.dp;
- dp_tgt_len = sizeof(tmp_type50_msg->crb2.dp);
- dq_tgt = tmp_type50_msg->crb2.dq;
- dq_tgt_len = sizeof(tmp_type50_msg->crb2.dq);
- u_tgt = tmp_type50_msg->crb2.u;
- u_tgt_len = sizeof(tmp_type50_msg->crb2.u);
- inp_tgt = tmp_type50_msg->crb2.message;
- inp_tgt_len = sizeof(tmp_type50_msg->crb2.message);
- }
-
- p_tgt += (p_tgt_len - long_len);
- if (copy_from_user(p_tgt, icaMsg_p->np_prime + long_offset, long_len))
- return SEN_RELEASED;
- if (is_empty(p_tgt, long_len))
- return SEN_USER_ERROR;
- q_tgt += (q_tgt_len - short_len);
- if (copy_from_user(q_tgt, icaMsg_p->nq_prime, short_len))
- return SEN_RELEASED;
- if (is_empty(q_tgt, short_len))
- return SEN_USER_ERROR;
- dp_tgt += (dp_tgt_len - long_len);
- if (copy_from_user(dp_tgt, icaMsg_p->bp_key + long_offset, long_len))
- return SEN_RELEASED;
- if (is_empty(dp_tgt, long_len))
- return SEN_USER_ERROR;
- dq_tgt += (dq_tgt_len - short_len);
- if (copy_from_user(dq_tgt, icaMsg_p->bq_key, short_len))
- return SEN_RELEASED;
- if (is_empty(dq_tgt, short_len))
- return SEN_USER_ERROR;
- u_tgt += (u_tgt_len - long_len);
- if (copy_from_user(u_tgt, icaMsg_p->u_mult_inv + long_offset, long_len))
- return SEN_RELEASED;
- if (is_empty(u_tgt, long_len))
- return SEN_USER_ERROR;
- inp_tgt += (inp_tgt_len - mod_len);
- if (copy_from_user(inp_tgt, icaMsg_p->inputdata, mod_len))
- return SEN_RELEASED;
- if (is_empty(inp_tgt, mod_len))
- return SEN_USER_ERROR;
-
- *z90cMsg_l_p = tmp_size - CALLER_HEADER;
-
- return 0;
-}
-
-int
-convert_request(unsigned char *buffer, int func, unsigned short function,
- int cdx, int dev_type, int *msg_l_p, unsigned char *msg_p)
-{
- if (dev_type == PCICA) {
- if (func == ICARSACRT)
- return ICACRT_msg_to_type4CRT_msg(
- (struct ica_rsa_modexpo_crt *) buffer,
- msg_l_p, (union type4_msg *) msg_p);
- else
- return ICAMEX_msg_to_type4MEX_msg(
- (struct ica_rsa_modexpo *) buffer,
- msg_l_p, (union type4_msg *) msg_p);
- }
- if (dev_type == PCICC) {
- if (func == ICARSACRT)
- return ICACRT_msg_to_type6CRT_msg(
- (struct ica_rsa_modexpo_crt *) buffer,
- cdx, msg_l_p, (struct type6_msg *)msg_p);
- if (function == PCI_FUNC_KEY_ENCRYPT)
- return ICAMEX_msg_to_type6MEX_en_msg(
- (struct ica_rsa_modexpo *) buffer,
- cdx, msg_l_p, (struct type6_msg *) msg_p);
- else
- return ICAMEX_msg_to_type6MEX_de_msg(
- (struct ica_rsa_modexpo *) buffer,
- cdx, msg_l_p, (struct type6_msg *) msg_p);
- }
- if ((dev_type == PCIXCC_MCL2) ||
- (dev_type == PCIXCC_MCL3) ||
- (dev_type == CEX2C)) {
- if (func == ICARSACRT)
- return ICACRT_msg_to_type6CRT_msgX(
- (struct ica_rsa_modexpo_crt *) buffer,
- cdx, msg_l_p, (struct type6_msg *) msg_p,
- dev_type);
- else
- return ICAMEX_msg_to_type6MEX_msgX(
- (struct ica_rsa_modexpo *) buffer,
- cdx, msg_l_p, (struct type6_msg *) msg_p,
- dev_type);
- }
- if (dev_type == CEX2A) {
- if (func == ICARSACRT)
- return ICACRT_msg_to_type50CRT_msg(
- (struct ica_rsa_modexpo_crt *) buffer,
- msg_l_p, (union type50_msg *) msg_p);
- else
- return ICAMEX_msg_to_type50MEX_msg(
- (struct ica_rsa_modexpo *) buffer,
- msg_l_p, (union type50_msg *) msg_p);
- }
-
- return 0;
-}
-
-int ext_bitlens_msg_count = 0;
-static inline void
-unset_ext_bitlens(void)
-{
- if (!ext_bitlens_msg_count) {
- PRINTK("Unable to use coprocessors for extended bitlengths. "
- "Using PCICAs/CEX2As (if present) for extended "
- "bitlengths. This is not an error.\n");
- ext_bitlens_msg_count++;
- }
- ext_bitlens = 0;
-}
-
-int
-convert_response(unsigned char *response, unsigned char *buffer,
- int *respbufflen_p, unsigned char *resp_buff)
-{
- struct ica_rsa_modexpo *icaMsg_p = (struct ica_rsa_modexpo *) buffer;
- struct error_hdr *errh_p = (struct error_hdr *) response;
- struct type80_hdr *t80h_p = (struct type80_hdr *) response;
- struct type84_hdr *t84h_p = (struct type84_hdr *) response;
- struct type86_fmt2_msg *t86m_p = (struct type86_fmt2_msg *) response;
- int reply_code, service_rc, service_rs, src_l;
- unsigned char *src_p, *tgt_p;
- struct CPRB *cprb_p;
- struct CPRBX *cprbx_p;
-
- src_p = 0;
- reply_code = 0;
- service_rc = 0;
- service_rs = 0;
- src_l = 0;
- switch (errh_p->type) {
- case TYPE82_RSP_CODE:
- case TYPE88_RSP_CODE:
- reply_code = errh_p->reply_code;
- src_p = (unsigned char *)errh_p;
- PRINTK("Hardware error: Type %02X Message Header: "
- "%02x%02x%02x%02x%02x%02x%02x%02x\n",
- errh_p->type,
- src_p[0], src_p[1], src_p[2], src_p[3],
- src_p[4], src_p[5], src_p[6], src_p[7]);
- break;
- case TYPE80_RSP_CODE:
- src_l = icaMsg_p->outputdatalength;
- src_p = response + (int)t80h_p->len - src_l;
- break;
- case TYPE84_RSP_CODE:
- src_l = icaMsg_p->outputdatalength;
- src_p = response + (int)t84h_p->len - src_l;
- break;
- case TYPE86_RSP_CODE:
- reply_code = t86m_p->header.reply_code;
- if (reply_code != 0)
- break;
- cprb_p = (struct CPRB *)
- (response + sizeof(struct type86_fmt2_msg));
- cprbx_p = (struct CPRBX *) cprb_p;
- if (cprb_p->cprb_ver_id != 0x02) {
- le2toI(cprb_p->ccp_rtcode, &service_rc);
- if (service_rc != 0) {
- le2toI(cprb_p->ccp_rscode, &service_rs);
- if ((service_rc == 8) && (service_rs == 66))
- PDEBUG("Bad block format on PCICC\n");
- else if ((service_rc == 8) && (service_rs == 65))
- PDEBUG("Probably an even modulus on "
- "PCICC\n");
- else if ((service_rc == 8) && (service_rs == 770)) {
- PDEBUG("Invalid key length on PCICC\n");
- unset_ext_bitlens();
- return REC_USE_PCICA;
- }
- else if ((service_rc == 8) && (service_rs == 783)) {
- PDEBUG("Extended bitlengths not enabled"
- "on PCICC\n");
- unset_ext_bitlens();
- return REC_USE_PCICA;
- }
- else
- PRINTK("service rc/rs (PCICC): %d/%d\n",
- service_rc, service_rs);
- return REC_OPERAND_INV;
- }
- src_p = (unsigned char *)cprb_p + sizeof(struct CPRB);
- src_p += 4;
- le2toI(src_p, &src_l);
- src_l -= 2;
- src_p += 2;
- } else {
- service_rc = (int)cprbx_p->ccp_rtcode;
- if (service_rc != 0) {
- service_rs = (int) cprbx_p->ccp_rscode;
- if ((service_rc == 8) && (service_rs == 66))
- PDEBUG("Bad block format on PCIXCC\n");
- else if ((service_rc == 8) && (service_rs == 65))
- PDEBUG("Probably an even modulus on "
- "PCIXCC\n");
- else if ((service_rc == 8) && (service_rs == 770)) {
- PDEBUG("Invalid key length on PCIXCC\n");
- unset_ext_bitlens();
- return REC_USE_PCICA;
- }
- else if ((service_rc == 8) && (service_rs == 783)) {
- PDEBUG("Extended bitlengths not enabled"
- "on PCIXCC\n");
- unset_ext_bitlens();
- return REC_USE_PCICA;
- }
- else
- PRINTK("service rc/rs (PCIXCC): %d/%d\n",
- service_rc, service_rs);
- return REC_OPERAND_INV;
- }
- src_p = (unsigned char *)
- cprbx_p + sizeof(struct CPRBX);
- src_p += 4;
- src_l = (int)(*((short *) src_p));
- src_l -= 2;
- src_p += 2;
- }
- break;
- default:
- src_p = (unsigned char *)errh_p;
- PRINTK("Unrecognized Message Header: "
- "%02x%02x%02x%02x%02x%02x%02x%02x\n",
- src_p[0], src_p[1], src_p[2], src_p[3],
- src_p[4], src_p[5], src_p[6], src_p[7]);
- return REC_BAD_MESSAGE;
- }
-
- if (reply_code)
- switch (reply_code) {
- case REP82_ERROR_MACHINE_FAILURE:
- if (errh_p->type == TYPE82_RSP_CODE)
- PRINTKW("Machine check failure\n");
- else
- PRINTKW("Module failure\n");
- return REC_HARDWAR_ERR;
- case REP82_ERROR_OPERAND_INVALID:
- return REC_OPERAND_INV;
- case REP88_ERROR_MESSAGE_MALFORMD:
- PRINTKW("Message malformed\n");
- return REC_OPERAND_INV;
- case REP82_ERROR_OPERAND_SIZE:
- return REC_OPERAND_SIZE;
- case REP82_ERROR_EVEN_MOD_IN_OPND:
- return REC_EVEN_MOD;
- case REP82_ERROR_MESSAGE_TYPE:
- return WRONG_DEVICE_TYPE;
- case REP82_ERROR_TRANSPORT_FAIL:
- PRINTKW("Transport failed (APFS = %02X%02X%02X%02X)\n",
- t86m_p->apfs[0], t86m_p->apfs[1],
- t86m_p->apfs[2], t86m_p->apfs[3]);
- return REC_HARDWAR_ERR;
- default:
- PRINTKW("reply code = %d\n", reply_code);
- return REC_HARDWAR_ERR;
- }
-
- if (service_rc != 0)
- return REC_OPERAND_INV;
-
- if ((src_l > icaMsg_p->outputdatalength) ||
- (src_l > RESPBUFFSIZE) ||
- (src_l <= 0))
- return REC_OPERAND_SIZE;
-
- PDEBUG("Length returned = %d\n", src_l);
- tgt_p = resp_buff + icaMsg_p->outputdatalength - src_l;
- memcpy(tgt_p, src_p, src_l);
- if ((errh_p->type == TYPE86_RSP_CODE) && (resp_buff < tgt_p)) {
- memset(resp_buff, 0, icaMsg_p->outputdatalength - src_l);
- if (pad_msg(resp_buff, icaMsg_p->outputdatalength, src_l))
- return REC_INVALID_PAD;
- }
- *respbufflen_p = icaMsg_p->outputdatalength;
- if (*respbufflen_p == 0)
- PRINTK("Zero *respbufflen_p\n");
-
- return 0;
-}
-
+++ /dev/null
-/*
- * linux/drivers/s390/crypto/z90main.c
- *
- * z90crypt 1.3.3
- *
- * Copyright (C) 2001, 2005 IBM Corporation
- * Author(s): Robert Burroughs (burrough@us.ibm.com)
- * Eric Rossman (edrossma@us.ibm.com)
- *
- * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <asm/uaccess.h> // copy_(from|to)_user
-#include <linux/compat.h>
-#include <linux/compiler.h>
-#include <linux/delay.h> // mdelay
-#include <linux/init.h>
-#include <linux/interrupt.h> // for tasklets
-#include <linux/miscdevice.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/proc_fs.h>
-#include <linux/syscalls.h>
-#include "z90crypt.h"
-#include "z90common.h"
-
-/**
- * Defaults that may be modified.
- */
-
-/**
- * You can specify a different minor at compile time.
- */
-#ifndef Z90CRYPT_MINOR
-#define Z90CRYPT_MINOR MISC_DYNAMIC_MINOR
-#endif
-
-/**
- * You can specify a different domain at compile time or on the insmod
- * command line.
- */
-#ifndef DOMAIN_INDEX
-#define DOMAIN_INDEX -1
-#endif
-
-/**
- * This is the name under which the device is registered in /proc/modules.
- */
-#define REG_NAME "z90crypt"
-
-/**
- * Cleanup should run every CLEANUPTIME seconds and should clean up requests
- * older than CLEANUPTIME seconds in the past.
- */
-#ifndef CLEANUPTIME
-#define CLEANUPTIME 15
-#endif
-
-/**
- * Config should run every CONFIGTIME seconds
- */
-#ifndef CONFIGTIME
-#define CONFIGTIME 30
-#endif
-
-/**
- * The first execution of the config task should take place
- * immediately after initialization
- */
-#ifndef INITIAL_CONFIGTIME
-#define INITIAL_CONFIGTIME 1
-#endif
-
-/**
- * Reader should run every READERTIME milliseconds
- * With the 100Hz patch for s390, z90crypt can lock the system solid while
- * under heavy load. We'll try to avoid that.
- */
-#ifndef READERTIME
-#if HZ > 1000
-#define READERTIME 2
-#else
-#define READERTIME 10
-#endif
-#endif
-
-/**
- * turn long device array index into device pointer
- */
-#define LONG2DEVPTR(ndx) (z90crypt.device_p[(ndx)])
-
-/**
- * turn short device array index into long device array index
- */
-#define SHRT2LONG(ndx) (z90crypt.overall_device_x.device_index[(ndx)])
-
-/**
- * turn short device array index into device pointer
- */
-#define SHRT2DEVPTR(ndx) LONG2DEVPTR(SHRT2LONG(ndx))
-
-/**
- * Status for a work-element
- */
-#define STAT_DEFAULT 0x00 // request has not been processed
-
-#define STAT_ROUTED 0x80 // bit 7: requests get routed to specific device
- // else, device is determined each write
-#define STAT_FAILED 0x40 // bit 6: this bit is set if the request failed
- // before being sent to the hardware.
-#define STAT_WRITTEN 0x30 // bits 5-4: work to be done, not sent to device
-// 0x20 // UNUSED state
-#define STAT_READPEND 0x10 // bits 5-4: work done, we're returning data now
-#define STAT_NOWORK 0x00 // bits off: no work on any queue
-#define STAT_RDWRMASK 0x30 // mask for bits 5-4
-
-/**
- * Macros to check the status RDWRMASK
- */
-#define CHK_RDWRMASK(statbyte) ((statbyte) & STAT_RDWRMASK)
-#define SET_RDWRMASK(statbyte, newval) \
- {(statbyte) &= ~STAT_RDWRMASK; (statbyte) |= newval;}
-
-/**
- * Audit Trail. Progress of a Work element
- * audit[0]: Unless noted otherwise, these bits are all set by the process
- */
-#define FP_COPYFROM 0x80 // Caller's buffer has been copied to work element
-#define FP_BUFFREQ 0x40 // Low Level buffer requested
-#define FP_BUFFGOT 0x20 // Low Level buffer obtained
-#define FP_SENT 0x10 // Work element sent to a crypto device
- // (may be set by process or by reader task)
-#define FP_PENDING 0x08 // Work element placed on pending queue
- // (may be set by process or by reader task)
-#define FP_REQUEST 0x04 // Work element placed on request queue
-#define FP_ASLEEP 0x02 // Work element about to sleep
-#define FP_AWAKE 0x01 // Work element has been awakened
-
-/**
- * audit[1]: These bits are set by the reader task and/or the cleanup task
- */
-#define FP_NOTPENDING 0x80 // Work element removed from pending queue
-#define FP_AWAKENING 0x40 // Caller about to be awakened
-#define FP_TIMEDOUT 0x20 // Caller timed out
-#define FP_RESPSIZESET 0x10 // Response size copied to work element
-#define FP_RESPADDRCOPIED 0x08 // Response address copied to work element
-#define FP_RESPBUFFCOPIED 0x04 // Response buffer copied to work element
-#define FP_REMREQUEST 0x02 // Work element removed from request queue
-#define FP_SIGNALED 0x01 // Work element was awakened by a signal
-
-/**
- * audit[2]: unused
- */
-
-/**
- * state of the file handle in private_data.status
- */
-#define STAT_OPEN 0
-#define STAT_CLOSED 1
-
-/**
- * PID() expands to the process ID of the current process
- */
-#define PID() (current->pid)
-
-/**
- * Selected Constants. The number of APs and the number of devices
- */
-#ifndef Z90CRYPT_NUM_APS
-#define Z90CRYPT_NUM_APS 64
-#endif
-#ifndef Z90CRYPT_NUM_DEVS
-#define Z90CRYPT_NUM_DEVS Z90CRYPT_NUM_APS
-#endif
-
-/**
- * Buffer size for receiving responses. The maximum Response Size
- * is actually the maximum request size, since in an error condition
- * the request itself may be returned unchanged.
- */
-#define MAX_RESPONSE_SIZE 0x0000077C
-
-/**
- * A count and status-byte mask
- */
-struct status {
- int st_count; // # of enabled devices
- int disabled_count; // # of disabled devices
- int user_disabled_count; // # of devices disabled via proc fs
- unsigned char st_mask[Z90CRYPT_NUM_APS]; // current status mask
-};
-
-/**
- * The array of device indexes is a mechanism for fast indexing into
- * a long (and sparse) array. For instance, if APs 3, 9 and 47 are
- * installed, z90CDeviceIndex[0] is 3, z90CDeviceIndex[1] is 9, and
- * z90CDeviceIndex[2] is 47.
- */
-struct device_x {
- int device_index[Z90CRYPT_NUM_DEVS];
-};
-
-/**
- * All devices are arranged in a single array: 64 APs
- */
-struct device {
- int dev_type; // PCICA, PCICC, PCIXCC_MCL2,
- // PCIXCC_MCL3, CEX2C, CEX2A
- enum devstat dev_stat; // current device status
- int dev_self_x; // Index in array
- int disabled; // Set when device is in error
- int user_disabled; // Set when device is disabled by user
- int dev_q_depth; // q depth
- unsigned char * dev_resp_p; // Response buffer address
- int dev_resp_l; // Response Buffer length
- int dev_caller_count; // Number of callers
- int dev_total_req_cnt; // # requests for device since load
- struct list_head dev_caller_list; // List of callers
-};
-
-/**
- * There's a struct status and a struct device_x for each device type.
- */
-struct hdware_block {
- struct status hdware_mask;
- struct status type_mask[Z90CRYPT_NUM_TYPES];
- struct device_x type_x_addr[Z90CRYPT_NUM_TYPES];
- unsigned char device_type_array[Z90CRYPT_NUM_APS];
-};
-
-/**
- * z90crypt is the topmost data structure in the hierarchy.
- */
-struct z90crypt {
- int max_count; // Nr of possible crypto devices
- struct status mask;
- int q_depth_array[Z90CRYPT_NUM_DEVS];
- int dev_type_array[Z90CRYPT_NUM_DEVS];
- struct device_x overall_device_x; // array device indexes
- struct device * device_p[Z90CRYPT_NUM_DEVS];
- int terminating;
- int domain_established;// TRUE: domain has been found
- int cdx; // Crypto Domain Index
- int len; // Length of this data structure
- struct hdware_block *hdware_info;
-};
-
-/**
- * An array of these structures is pointed to from dev_caller
- * The length of the array depends on the device type. For APs,
- * there are 8.
- *
- * The caller buffer is allocated to the user at OPEN. At WRITE,
- * it contains the request; at READ, the response. The function
- * send_to_crypto_device converts the request to device-dependent
- * form and use the caller's OPEN-allocated buffer for the response.
- *
- * For the contents of caller_dev_dep_req and caller_dev_dep_req_p
- * because that points to it, see the discussion in z90hardware.c.
- * Search for "extended request message block".
- */
-struct caller {
- int caller_buf_l; // length of original request
- unsigned char * caller_buf_p; // Original request on WRITE
- int caller_dev_dep_req_l; // len device dependent request
- unsigned char * caller_dev_dep_req_p; // Device dependent form
- unsigned char caller_id[8]; // caller-supplied message id
- struct list_head caller_liste;
- unsigned char caller_dev_dep_req[MAX_RESPONSE_SIZE];
-};
-
-/**
- * Function prototypes from z90hardware.c
- */
-enum hdstat query_online(int deviceNr, int cdx, int resetNr, int *q_depth,
- int *dev_type);
-enum devstat reset_device(int deviceNr, int cdx, int resetNr);
-enum devstat send_to_AP(int dev_nr, int cdx, int msg_len, unsigned char *msg_ext);
-enum devstat receive_from_AP(int dev_nr, int cdx, int resplen,
- unsigned char *resp, unsigned char *psmid);
-int convert_request(unsigned char *buffer, int func, unsigned short function,
- int cdx, int dev_type, int *msg_l_p, unsigned char *msg_p);
-int convert_response(unsigned char *response, unsigned char *buffer,
- int *respbufflen_p, unsigned char *resp_buff);
-
-/**
- * Low level function prototypes
- */
-static int create_z90crypt(int *cdx_p);
-static int refresh_z90crypt(int *cdx_p);
-static int find_crypto_devices(struct status *deviceMask);
-static int create_crypto_device(int index);
-static int destroy_crypto_device(int index);
-static void destroy_z90crypt(void);
-static int refresh_index_array(struct status *status_str,
- struct device_x *index_array);
-static int probe_device_type(struct device *devPtr);
-static int probe_PCIXCC_type(struct device *devPtr);
-
-/**
- * proc fs definitions
- */
-static struct proc_dir_entry *z90crypt_entry;
-
-/**
- * data structures
- */
-
-/**
- * work_element.opener points back to this structure
- */
-struct priv_data {
- pid_t opener_pid;
- unsigned char status; // 0: open 1: closed
-};
-
-/**
- * A work element is allocated for each request
- */
-struct work_element {
- struct priv_data *priv_data;
- pid_t pid;
- int devindex; // index of device processing this w_e
- // (If request did not specify device,
- // -1 until placed onto a queue)
- int devtype;
- struct list_head liste; // used for requestq and pendingq
- char buffer[128]; // local copy of user request
- int buff_size; // size of the buffer for the request
- char resp_buff[RESPBUFFSIZE];
- int resp_buff_size;
- char __user * resp_addr; // address of response in user space
- unsigned int funccode; // function code of request
- wait_queue_head_t waitq;
- unsigned long requestsent; // time at which the request was sent
- atomic_t alarmrung; // wake-up signal
- unsigned char caller_id[8]; // pid + counter, for this w_e
- unsigned char status[1]; // bits to mark status of the request
- unsigned char audit[3]; // record of work element's progress
- unsigned char * requestptr; // address of request buffer
- int retcode; // return code of request
-};
-
-/**
- * High level function prototypes
- */
-static int z90crypt_open(struct inode *, struct file *);
-static int z90crypt_release(struct inode *, struct file *);
-static ssize_t z90crypt_read(struct file *, char __user *, size_t, loff_t *);
-static ssize_t z90crypt_write(struct file *, const char __user *,
- size_t, loff_t *);
-static long z90crypt_unlocked_ioctl(struct file *, unsigned int, unsigned long);
-static long z90crypt_compat_ioctl(struct file *, unsigned int, unsigned long);
-
-static void z90crypt_reader_task(unsigned long);
-static void z90crypt_schedule_reader_task(unsigned long);
-static void z90crypt_config_task(unsigned long);
-static void z90crypt_cleanup_task(unsigned long);
-
-static int z90crypt_status(char *, char **, off_t, int, int *, void *);
-static int z90crypt_status_write(struct file *, const char __user *,
- unsigned long, void *);
-
-/**
- * Storage allocated at initialization and used throughout the life of
- * this insmod
- */
-static int domain = DOMAIN_INDEX;
-static struct z90crypt z90crypt;
-static int quiesce_z90crypt;
-static spinlock_t queuespinlock;
-static struct list_head request_list;
-static int requestq_count;
-static struct list_head pending_list;
-static int pendingq_count;
-
-static struct tasklet_struct reader_tasklet;
-static struct timer_list reader_timer;
-static struct timer_list config_timer;
-static struct timer_list cleanup_timer;
-static atomic_t total_open;
-static atomic_t z90crypt_step;
-
-static struct file_operations z90crypt_fops = {
- .owner = THIS_MODULE,
- .read = z90crypt_read,
- .write = z90crypt_write,
- .unlocked_ioctl = z90crypt_unlocked_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = z90crypt_compat_ioctl,
-#endif
- .open = z90crypt_open,
- .release = z90crypt_release
-};
-
-static struct miscdevice z90crypt_misc_device = {
- .minor = Z90CRYPT_MINOR,
- .name = DEV_NAME,
- .fops = &z90crypt_fops,
-};
-
-/**
- * Documentation values.
- */
-MODULE_AUTHOR("zSeries Linux Crypto Team: Robert H. Burroughs, Eric D. Rossman"
- "and Jochen Roehrig");
-MODULE_DESCRIPTION("zSeries Linux Cryptographic Coprocessor device driver, "
- "Copyright 2001, 2005 IBM Corporation");
-MODULE_LICENSE("GPL");
-module_param(domain, int, 0);
-MODULE_PARM_DESC(domain, "domain index for device");
-
-#ifdef CONFIG_COMPAT
-/**
- * ioctl32 conversion routines
- */
-struct ica_rsa_modexpo_32 { // For 32-bit callers
- compat_uptr_t inputdata;
- unsigned int inputdatalength;
- compat_uptr_t outputdata;
- unsigned int outputdatalength;
- compat_uptr_t b_key;
- compat_uptr_t n_modulus;
-};
-
-static long
-trans_modexpo32(struct file *filp, unsigned int cmd, unsigned long arg)
-{
- struct ica_rsa_modexpo_32 __user *mex32u = compat_ptr(arg);
- struct ica_rsa_modexpo_32 mex32k;
- struct ica_rsa_modexpo __user *mex64;
- long ret = 0;
- unsigned int i;
-
- if (!access_ok(VERIFY_WRITE, mex32u, sizeof(struct ica_rsa_modexpo_32)))
- return -EFAULT;
- mex64 = compat_alloc_user_space(sizeof(struct ica_rsa_modexpo));
- if (!access_ok(VERIFY_WRITE, mex64, sizeof(struct ica_rsa_modexpo)))
- return -EFAULT;
- if (copy_from_user(&mex32k, mex32u, sizeof(struct ica_rsa_modexpo_32)))
- return -EFAULT;
- if (__put_user(compat_ptr(mex32k.inputdata), &mex64->inputdata) ||
- __put_user(mex32k.inputdatalength, &mex64->inputdatalength) ||
- __put_user(compat_ptr(mex32k.outputdata), &mex64->outputdata) ||
- __put_user(mex32k.outputdatalength, &mex64->outputdatalength) ||
- __put_user(compat_ptr(mex32k.b_key), &mex64->b_key) ||
- __put_user(compat_ptr(mex32k.n_modulus), &mex64->n_modulus))
- return -EFAULT;
- ret = z90crypt_unlocked_ioctl(filp, cmd, (unsigned long)mex64);
- if (!ret)
- if (__get_user(i, &mex64->outputdatalength) ||
- __put_user(i, &mex32u->outputdatalength))
- ret = -EFAULT;
- return ret;
-}
-
-struct ica_rsa_modexpo_crt_32 { // For 32-bit callers
- compat_uptr_t inputdata;
- unsigned int inputdatalength;
- compat_uptr_t outputdata;
- unsigned int outputdatalength;
- compat_uptr_t bp_key;
- compat_uptr_t bq_key;
- compat_uptr_t np_prime;
- compat_uptr_t nq_prime;
- compat_uptr_t u_mult_inv;
-};
-
-static long
-trans_modexpo_crt32(struct file *filp, unsigned int cmd, unsigned long arg)
-{
- struct ica_rsa_modexpo_crt_32 __user *crt32u = compat_ptr(arg);
- struct ica_rsa_modexpo_crt_32 crt32k;
- struct ica_rsa_modexpo_crt __user *crt64;
- long ret = 0;
- unsigned int i;
-
- if (!access_ok(VERIFY_WRITE, crt32u,
- sizeof(struct ica_rsa_modexpo_crt_32)))
- return -EFAULT;
- crt64 = compat_alloc_user_space(sizeof(struct ica_rsa_modexpo_crt));
- if (!access_ok(VERIFY_WRITE, crt64, sizeof(struct ica_rsa_modexpo_crt)))
- return -EFAULT;
- if (copy_from_user(&crt32k, crt32u,
- sizeof(struct ica_rsa_modexpo_crt_32)))
- return -EFAULT;
- if (__put_user(compat_ptr(crt32k.inputdata), &crt64->inputdata) ||
- __put_user(crt32k.inputdatalength, &crt64->inputdatalength) ||
- __put_user(compat_ptr(crt32k.outputdata), &crt64->outputdata) ||
- __put_user(crt32k.outputdatalength, &crt64->outputdatalength) ||
- __put_user(compat_ptr(crt32k.bp_key), &crt64->bp_key) ||
- __put_user(compat_ptr(crt32k.bq_key), &crt64->bq_key) ||
- __put_user(compat_ptr(crt32k.np_prime), &crt64->np_prime) ||
- __put_user(compat_ptr(crt32k.nq_prime), &crt64->nq_prime) ||
- __put_user(compat_ptr(crt32k.u_mult_inv), &crt64->u_mult_inv))
- return -EFAULT;
- ret = z90crypt_unlocked_ioctl(filp, cmd, (unsigned long)crt64);
- if (!ret)
- if (__get_user(i, &crt64->outputdatalength) ||
- __put_user(i, &crt32u->outputdatalength))
- ret = -EFAULT;
- return ret;
-}
-
-static long
-z90crypt_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
- switch (cmd) {
- case ICAZ90STATUS:
- case Z90QUIESCE:
- case Z90STAT_TOTALCOUNT:
- case Z90STAT_PCICACOUNT:
- case Z90STAT_PCICCCOUNT:
- case Z90STAT_PCIXCCCOUNT:
- case Z90STAT_PCIXCCMCL2COUNT:
- case Z90STAT_PCIXCCMCL3COUNT:
- case Z90STAT_CEX2CCOUNT:
- case Z90STAT_REQUESTQ_COUNT:
- case Z90STAT_PENDINGQ_COUNT:
- case Z90STAT_TOTALOPEN_COUNT:
- case Z90STAT_DOMAIN_INDEX:
- case Z90STAT_STATUS_MASK:
- case Z90STAT_QDEPTH_MASK:
- case Z90STAT_PERDEV_REQCNT:
- return z90crypt_unlocked_ioctl(filp, cmd, arg);
- case ICARSAMODEXPO:
- return trans_modexpo32(filp, cmd, arg);
- case ICARSACRT:
- return trans_modexpo_crt32(filp, cmd, arg);
- default:
- return -ENOIOCTLCMD;
- }
-}
-#endif
-
-/**
- * The module initialization code.
- */
-static int __init
-z90crypt_init_module(void)
-{
- int result, nresult;
- struct proc_dir_entry *entry;
-
- PDEBUG("PID %d\n", PID());
-
- if ((domain < -1) || (domain > 15)) {
- PRINTKW("Invalid param: domain = %d. Not loading.\n", domain);
- return -EINVAL;
- }
-
- /* Register as misc device with given minor (or get a dynamic one). */
- result = misc_register(&z90crypt_misc_device);
- if (result < 0) {
- PRINTKW(KERN_ERR "misc_register (minor %d) failed with %d\n",
- z90crypt_misc_device.minor, result);
- return result;
- }
-
- PDEBUG("Registered " DEV_NAME " with result %d\n", result);
-
- result = create_z90crypt(&domain);
- if (result != 0) {
- PRINTKW("create_z90crypt (domain index %d) failed with %d.\n",
- domain, result);
- result = -ENOMEM;
- goto init_module_cleanup;
- }
-
- if (result == 0) {
- PRINTKN("Version %d.%d.%d loaded, built on %s %s\n",
- z90crypt_VERSION, z90crypt_RELEASE, z90crypt_VARIANT,
- __DATE__, __TIME__);
- PDEBUG("create_z90crypt (domain index %d) successful.\n",
- domain);
- } else
- PRINTK("No devices at startup\n");
-
- /* Initialize globals. */
- spin_lock_init(&queuespinlock);
-
- INIT_LIST_HEAD(&pending_list);
- pendingq_count = 0;
-
- INIT_LIST_HEAD(&request_list);
- requestq_count = 0;
-
- quiesce_z90crypt = 0;
-
- atomic_set(&total_open, 0);
- atomic_set(&z90crypt_step, 0);
-
- /* Set up the cleanup task. */
- init_timer(&cleanup_timer);
- cleanup_timer.function = z90crypt_cleanup_task;
- cleanup_timer.data = 0;
- cleanup_timer.expires = jiffies + (CLEANUPTIME * HZ);
- add_timer(&cleanup_timer);
-
- /* Set up the proc file system */
- entry = create_proc_entry("driver/z90crypt", 0644, 0);
- if (entry) {
- entry->nlink = 1;
- entry->data = 0;
- entry->read_proc = z90crypt_status;
- entry->write_proc = z90crypt_status_write;
- }
- else
- PRINTK("Couldn't create z90crypt proc entry\n");
- z90crypt_entry = entry;
-
- /* Set up the configuration task. */
- init_timer(&config_timer);
- config_timer.function = z90crypt_config_task;
- config_timer.data = 0;
- config_timer.expires = jiffies + (INITIAL_CONFIGTIME * HZ);
- add_timer(&config_timer);
-
- /* Set up the reader task */
- tasklet_init(&reader_tasklet, z90crypt_reader_task, 0);
- init_timer(&reader_timer);
- reader_timer.function = z90crypt_schedule_reader_task;
- reader_timer.data = 0;
- reader_timer.expires = jiffies + (READERTIME * HZ / 1000);
- add_timer(&reader_timer);
-
- return 0; // success
-
-init_module_cleanup:
- if ((nresult = misc_deregister(&z90crypt_misc_device)))
- PRINTK("misc_deregister failed with %d.\n", nresult);
- else
- PDEBUG("misc_deregister successful.\n");
-
- return result; // failure
-}
-
-/**
- * The module termination code
- */
-static void __exit
-z90crypt_cleanup_module(void)
-{
- int nresult;
-
- PDEBUG("PID %d\n", PID());
-
- remove_proc_entry("driver/z90crypt", 0);
-
- if ((nresult = misc_deregister(&z90crypt_misc_device)))
- PRINTK("misc_deregister failed with %d.\n", nresult);
- else
- PDEBUG("misc_deregister successful.\n");
-
- /* Remove the tasks */
- tasklet_kill(&reader_tasklet);
- del_timer(&reader_timer);
- del_timer(&config_timer);
- del_timer(&cleanup_timer);
-
- destroy_z90crypt();
-
- PRINTKN("Unloaded.\n");
-}
-
-/**
- * Functions running under a process id
- *
- * The I/O functions:
- * z90crypt_open
- * z90crypt_release
- * z90crypt_read
- * z90crypt_write
- * z90crypt_unlocked_ioctl
- * z90crypt_status
- * z90crypt_status_write
- * disable_card
- * enable_card
- *
- * Helper functions:
- * z90crypt_rsa
- * z90crypt_prepare
- * z90crypt_send
- * z90crypt_process_results
- *
- */
-static int
-z90crypt_open(struct inode *inode, struct file *filp)
-{
- struct priv_data *private_data_p;
-
- if (quiesce_z90crypt)
- return -EQUIESCE;
-
- private_data_p = kzalloc(sizeof(struct priv_data), GFP_KERNEL);
- if (!private_data_p) {
- PRINTK("Memory allocate failed\n");
- return -ENOMEM;
- }
-
- private_data_p->status = STAT_OPEN;
- private_data_p->opener_pid = PID();
- filp->private_data = private_data_p;
- atomic_inc(&total_open);
-
- return 0;
-}
-
-static int
-z90crypt_release(struct inode *inode, struct file *filp)
-{
- struct priv_data *private_data_p = filp->private_data;
-
- PDEBUG("PID %d (filp %p)\n", PID(), filp);
-
- private_data_p->status = STAT_CLOSED;
- memset(private_data_p, 0, sizeof(struct priv_data));
- kfree(private_data_p);
- atomic_dec(&total_open);
-
- return 0;
-}
-
-/*
- * there are two read functions, of which compile options will choose one
- * without USE_GET_RANDOM_BYTES
- * => read() always returns -EPERM;
- * otherwise
- * => read() uses get_random_bytes() kernel function
- */
-#ifndef USE_GET_RANDOM_BYTES
-/**
- * z90crypt_read will not be supported beyond z90crypt 1.3.1
- */
-static ssize_t
-z90crypt_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
-{
- PDEBUG("filp %p (PID %d)\n", filp, PID());
- return -EPERM;
-}
-#else // we want to use get_random_bytes
-/**
- * read() just returns a string of random bytes. Since we have no way
- * to generate these cryptographically, we just execute get_random_bytes
- * for the length specified.
- */
-#include <linux/random.h>
-static ssize_t
-z90crypt_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
-{
- unsigned char *temp_buff;
-
- PDEBUG("filp %p (PID %d)\n", filp, PID());
-
- if (quiesce_z90crypt)
- return -EQUIESCE;
- if (count < 0) {
- PRINTK("Requested random byte count negative: %ld\n", count);
- return -EINVAL;
- }
- if (count > RESPBUFFSIZE) {
- PDEBUG("count[%d] > RESPBUFFSIZE", count);
- return -EINVAL;
- }
- if (count == 0)
- return 0;
- temp_buff = kmalloc(RESPBUFFSIZE, GFP_KERNEL);
- if (!temp_buff) {
- PRINTK("Memory allocate failed\n");
- return -ENOMEM;
- }
- get_random_bytes(temp_buff, count);
-
- if (copy_to_user(buf, temp_buff, count) != 0) {
- kfree(temp_buff);
- return -EFAULT;
- }
- kfree(temp_buff);
- return count;
-}
-#endif
-
-/**
- * Write is is not allowed
- */
-static ssize_t
-z90crypt_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos)
-{
- PDEBUG("filp %p (PID %d)\n", filp, PID());
- return -EPERM;
-}
-
-/**
- * New status functions
- */
-static inline int
-get_status_totalcount(void)
-{
- return z90crypt.hdware_info->hdware_mask.st_count;
-}
-
-static inline int
-get_status_PCICAcount(void)
-{
- return z90crypt.hdware_info->type_mask[PCICA].st_count;
-}
-
-static inline int
-get_status_PCICCcount(void)
-{
- return z90crypt.hdware_info->type_mask[PCICC].st_count;
-}
-
-static inline int
-get_status_PCIXCCcount(void)
-{
- return z90crypt.hdware_info->type_mask[PCIXCC_MCL2].st_count +
- z90crypt.hdware_info->type_mask[PCIXCC_MCL3].st_count;
-}
-
-static inline int
-get_status_PCIXCCMCL2count(void)
-{
- return z90crypt.hdware_info->type_mask[PCIXCC_MCL2].st_count;
-}
-
-static inline int
-get_status_PCIXCCMCL3count(void)
-{
- return z90crypt.hdware_info->type_mask[PCIXCC_MCL3].st_count;
-}
-
-static inline int
-get_status_CEX2Ccount(void)
-{
- return z90crypt.hdware_info->type_mask[CEX2C].st_count;
-}
-
-static inline int
-get_status_CEX2Acount(void)
-{
- return z90crypt.hdware_info->type_mask[CEX2A].st_count;
-}
-
-static inline int
-get_status_requestq_count(void)
-{
- return requestq_count;
-}
-
-static inline int
-get_status_pendingq_count(void)
-{
- return pendingq_count;
-}
-
-static inline int
-get_status_totalopen_count(void)
-{
- return atomic_read(&total_open);
-}
-
-static inline int
-get_status_domain_index(void)
-{
- return z90crypt.cdx;
-}
-
-static inline unsigned char *
-get_status_status_mask(unsigned char status[Z90CRYPT_NUM_APS])
-{
- int i, ix;
-
- memcpy(status, z90crypt.hdware_info->device_type_array,
- Z90CRYPT_NUM_APS);
-
- for (i = 0; i < get_status_totalcount(); i++) {
- ix = SHRT2LONG(i);
- if (LONG2DEVPTR(ix)->user_disabled)
- status[ix] = 0x0d;
- }
-
- return status;
-}
-
-static inline unsigned char *
-get_status_qdepth_mask(unsigned char qdepth[Z90CRYPT_NUM_APS])
-{
- int i, ix;
-
- memset(qdepth, 0, Z90CRYPT_NUM_APS);
-
- for (i = 0; i < get_status_totalcount(); i++) {
- ix = SHRT2LONG(i);
- qdepth[ix] = LONG2DEVPTR(ix)->dev_caller_count;
- }
-
- return qdepth;
-}
-
-static inline unsigned int *
-get_status_perdevice_reqcnt(unsigned int reqcnt[Z90CRYPT_NUM_APS])
-{
- int i, ix;
-
- memset(reqcnt, 0, Z90CRYPT_NUM_APS * sizeof(int));
-
- for (i = 0; i < get_status_totalcount(); i++) {
- ix = SHRT2LONG(i);
- reqcnt[ix] = LONG2DEVPTR(ix)->dev_total_req_cnt;
- }
-
- return reqcnt;
-}
-
-static inline void
-init_work_element(struct work_element *we_p,
- struct priv_data *priv_data, pid_t pid)
-{
- int step;
-
- we_p->requestptr = (unsigned char *)we_p + sizeof(struct work_element);
- /* Come up with a unique id for this caller. */
- step = atomic_inc_return(&z90crypt_step);
- memcpy(we_p->caller_id+0, (void *) &pid, sizeof(pid));
- memcpy(we_p->caller_id+4, (void *) &step, sizeof(step));
- we_p->pid = pid;
- we_p->priv_data = priv_data;
- we_p->status[0] = STAT_DEFAULT;
- we_p->audit[0] = 0x00;
- we_p->audit[1] = 0x00;
- we_p->audit[2] = 0x00;
- we_p->resp_buff_size = 0;
- we_p->retcode = 0;
- we_p->devindex = -1;
- we_p->devtype = -1;
- atomic_set(&we_p->alarmrung, 0);
- init_waitqueue_head(&we_p->waitq);
- INIT_LIST_HEAD(&(we_p->liste));
-}
-
-static inline int
-allocate_work_element(struct work_element **we_pp,
- struct priv_data *priv_data_p, pid_t pid)
-{
- struct work_element *we_p;
-
- we_p = (struct work_element *) get_zeroed_page(GFP_KERNEL);
- if (!we_p)
- return -ENOMEM;
- init_work_element(we_p, priv_data_p, pid);
- *we_pp = we_p;
- return 0;
-}
-
-static inline void
-remove_device(struct device *device_p)
-{
- if (!device_p || (device_p->disabled != 0))
- return;
- device_p->disabled = 1;
- z90crypt.hdware_info->type_mask[device_p->dev_type].disabled_count++;
- z90crypt.hdware_info->hdware_mask.disabled_count++;
-}
-
-/**
- * Bitlength limits for each card
- *
- * There are new MCLs which allow more bitlengths. See the table for details.
- * The MCL must be applied and the newer bitlengths enabled for these to work.
- *
- * Card Type Old limit New limit
- * PCICA ??-2048 same (the lower limit is less than 128 bit...)
- * PCICC 512-1024 512-2048
- * PCIXCC_MCL2 512-2048 ----- (applying any GA LIC will make an MCL3 card)
- * PCIXCC_MCL3 ----- 128-2048
- * CEX2C 512-2048 128-2048
- * CEX2A ??-2048 same (the lower limit is less than 128 bit...)
- *
- * ext_bitlens (extended bitlengths) is a global, since you should not apply an
- * MCL to just one card in a machine. We assume, at first, that all cards have
- * these capabilities.
- */
-int ext_bitlens = 1; // This is global
-#define PCIXCC_MIN_MOD_SIZE 16 // 128 bits
-#define OLD_PCIXCC_MIN_MOD_SIZE 64 // 512 bits
-#define PCICC_MIN_MOD_SIZE 64 // 512 bits
-#define OLD_PCICC_MAX_MOD_SIZE 128 // 1024 bits
-#define MAX_MOD_SIZE 256 // 2048 bits
-
-static inline int
-select_device_type(int *dev_type_p, int bytelength)
-{
- static int count = 0;
- int PCICA_avail, PCIXCC_MCL3_avail, CEX2C_avail, CEX2A_avail,
- index_to_use;
- struct status *stat;
- if ((*dev_type_p != PCICC) && (*dev_type_p != PCICA) &&
- (*dev_type_p != PCIXCC_MCL2) && (*dev_type_p != PCIXCC_MCL3) &&
- (*dev_type_p != CEX2C) && (*dev_type_p != CEX2A) &&
- (*dev_type_p != ANYDEV))
- return -1;
- if (*dev_type_p != ANYDEV) {
- stat = &z90crypt.hdware_info->type_mask[*dev_type_p];
- if (stat->st_count >
- (stat->disabled_count + stat->user_disabled_count))
- return 0;
- return -1;
- }
-
- /**
- * Assumption: PCICA, PCIXCC_MCL3, CEX2C, and CEX2A are all similar in
- * speed.
- *
- * PCICA and CEX2A do NOT co-exist, so it would be either one or the
- * other present.
- */
- stat = &z90crypt.hdware_info->type_mask[PCICA];
- PCICA_avail = stat->st_count -
- (stat->disabled_count + stat->user_disabled_count);
- stat = &z90crypt.hdware_info->type_mask[PCIXCC_MCL3];
- PCIXCC_MCL3_avail = stat->st_count -
- (stat->disabled_count + stat->user_disabled_count);
- stat = &z90crypt.hdware_info->type_mask[CEX2C];
- CEX2C_avail = stat->st_count -
- (stat->disabled_count + stat->user_disabled_count);
- stat = &z90crypt.hdware_info->type_mask[CEX2A];
- CEX2A_avail = stat->st_count -
- (stat->disabled_count + stat->user_disabled_count);
- if (PCICA_avail || PCIXCC_MCL3_avail || CEX2C_avail || CEX2A_avail) {
- /**
- * bitlength is a factor, PCICA or CEX2A are the most capable,
- * even with the new MCL for PCIXCC.
- */
- if ((bytelength < PCIXCC_MIN_MOD_SIZE) ||
- (!ext_bitlens && (bytelength < OLD_PCIXCC_MIN_MOD_SIZE))) {
- if (PCICA_avail) {
- *dev_type_p = PCICA;
- return 0;
- }
- if (CEX2A_avail) {
- *dev_type_p = CEX2A;
- return 0;
- }
- return -1;
- }
-
- index_to_use = count % (PCICA_avail + PCIXCC_MCL3_avail +
- CEX2C_avail + CEX2A_avail);
- if (index_to_use < PCICA_avail)
- *dev_type_p = PCICA;
- else if (index_to_use < (PCICA_avail + PCIXCC_MCL3_avail))
- *dev_type_p = PCIXCC_MCL3;
- else if (index_to_use < (PCICA_avail + PCIXCC_MCL3_avail +
- CEX2C_avail))
- *dev_type_p = CEX2C;
- else
- *dev_type_p = CEX2A;
- count++;
- return 0;
- }
-
- /* Less than OLD_PCIXCC_MIN_MOD_SIZE cannot go to a PCIXCC_MCL2 */
- if (bytelength < OLD_PCIXCC_MIN_MOD_SIZE)
- return -1;
- stat = &z90crypt.hdware_info->type_mask[PCIXCC_MCL2];
- if (stat->st_count >
- (stat->disabled_count + stat->user_disabled_count)) {
- *dev_type_p = PCIXCC_MCL2;
- return 0;
- }
-
- /**
- * Less than PCICC_MIN_MOD_SIZE or more than OLD_PCICC_MAX_MOD_SIZE
- * (if we don't have the MCL applied and the newer bitlengths enabled)
- * cannot go to a PCICC
- */
- if ((bytelength < PCICC_MIN_MOD_SIZE) ||
- (!ext_bitlens && (bytelength > OLD_PCICC_MAX_MOD_SIZE))) {
- return -1;
- }
- stat = &z90crypt.hdware_info->type_mask[PCICC];
- if (stat->st_count >
- (stat->disabled_count + stat->user_disabled_count)) {
- *dev_type_p = PCICC;
- return 0;
- }
-
- return -1;
-}
-
-/**
- * Try the selected number, then the selected type (can be ANYDEV)
- */
-static inline int
-select_device(int *dev_type_p, int *device_nr_p, int bytelength)
-{
- int i, indx, devTp, low_count, low_indx;
- struct device_x *index_p;
- struct device *dev_ptr;
-
- PDEBUG("device type = %d, index = %d\n", *dev_type_p, *device_nr_p);
- if ((*device_nr_p >= 0) && (*device_nr_p < Z90CRYPT_NUM_DEVS)) {
- PDEBUG("trying index = %d\n", *device_nr_p);
- dev_ptr = z90crypt.device_p[*device_nr_p];
-
- if (dev_ptr &&
- (dev_ptr->dev_stat != DEV_GONE) &&
- (dev_ptr->disabled == 0) &&
- (dev_ptr->user_disabled == 0)) {
- PDEBUG("selected by number, index = %d\n",
- *device_nr_p);
- *dev_type_p = dev_ptr->dev_type;
- return *device_nr_p;
- }
- }
- *device_nr_p = -1;
- PDEBUG("trying type = %d\n", *dev_type_p);
- devTp = *dev_type_p;
- if (select_device_type(&devTp, bytelength) == -1) {
- PDEBUG("failed to select by type\n");
- return -1;
- }
- PDEBUG("selected type = %d\n", devTp);
- index_p = &z90crypt.hdware_info->type_x_addr[devTp];
- low_count = 0x0000FFFF;
- low_indx = -1;
- for (i = 0; i < z90crypt.hdware_info->type_mask[devTp].st_count; i++) {
- indx = index_p->device_index[i];
- dev_ptr = z90crypt.device_p[indx];
- if (dev_ptr &&
- (dev_ptr->dev_stat != DEV_GONE) &&
- (dev_ptr->disabled == 0) &&
- (dev_ptr->user_disabled == 0) &&
- (devTp == dev_ptr->dev_type) &&
- (low_count > dev_ptr->dev_caller_count)) {
- low_count = dev_ptr->dev_caller_count;
- low_indx = indx;
- }
- }
- *device_nr_p = low_indx;
- return low_indx;
-}
-
-static inline int
-send_to_crypto_device(struct work_element *we_p)
-{
- struct caller *caller_p;
- struct device *device_p;
- int dev_nr;
- int bytelen = ((struct ica_rsa_modexpo *)we_p->buffer)->inputdatalength;
-
- if (!we_p->requestptr)
- return SEN_FATAL_ERROR;
- caller_p = (struct caller *)we_p->requestptr;
- dev_nr = we_p->devindex;
- if (select_device(&we_p->devtype, &dev_nr, bytelen) == -1) {
- if (z90crypt.hdware_info->hdware_mask.st_count != 0)
- return SEN_RETRY;
- else
- return SEN_NOT_AVAIL;
- }
- we_p->devindex = dev_nr;
- device_p = z90crypt.device_p[dev_nr];
- if (!device_p)
- return SEN_NOT_AVAIL;
- if (device_p->dev_type != we_p->devtype)
- return SEN_RETRY;
- if (device_p->dev_caller_count >= device_p->dev_q_depth)
- return SEN_QUEUE_FULL;
- PDEBUG("device number prior to send: %d\n", dev_nr);
- switch (send_to_AP(dev_nr, z90crypt.cdx,
- caller_p->caller_dev_dep_req_l,
- caller_p->caller_dev_dep_req_p)) {
- case DEV_SEN_EXCEPTION:
- PRINTKC("Exception during send to device %d\n", dev_nr);
- z90crypt.terminating = 1;
- return SEN_FATAL_ERROR;
- case DEV_GONE:
- PRINTK("Device %d not available\n", dev_nr);
- remove_device(device_p);
- return SEN_NOT_AVAIL;
- case DEV_EMPTY:
- return SEN_NOT_AVAIL;
- case DEV_NO_WORK:
- return SEN_FATAL_ERROR;
- case DEV_BAD_MESSAGE:
- return SEN_USER_ERROR;
- case DEV_QUEUE_FULL:
- return SEN_QUEUE_FULL;
- default:
- case DEV_ONLINE:
- break;
- }
- list_add_tail(&(caller_p->caller_liste), &(device_p->dev_caller_list));
- device_p->dev_caller_count++;
- return 0;
-}
-
-/**
- * Send puts the user's work on one of two queues:
- * the pending queue if the send was successful
- * the request queue if the send failed because device full or busy
- */
-static inline int
-z90crypt_send(struct work_element *we_p, const char *buf)
-{
- int rv;
-
- PDEBUG("PID %d\n", PID());
-
- if (CHK_RDWRMASK(we_p->status[0]) != STAT_NOWORK) {
- PDEBUG("PID %d tried to send more work but has outstanding "
- "work.\n", PID());
- return -EWORKPEND;
- }
- we_p->devindex = -1; // Reset device number
- spin_lock_irq(&queuespinlock);
- rv = send_to_crypto_device(we_p);
- switch (rv) {
- case 0:
- we_p->requestsent = jiffies;
- we_p->audit[0] |= FP_SENT;
- list_add_tail(&we_p->liste, &pending_list);
- ++pendingq_count;
- we_p->audit[0] |= FP_PENDING;
- break;
- case SEN_BUSY:
- case SEN_QUEUE_FULL:
- rv = 0;
- we_p->devindex = -1; // any device will do
- we_p->requestsent = jiffies;
- list_add_tail(&we_p->liste, &request_list);
- ++requestq_count;
- we_p->audit[0] |= FP_REQUEST;
- break;
- case SEN_RETRY:
- rv = -ERESTARTSYS;
- break;
- case SEN_NOT_AVAIL:
- PRINTK("*** No devices available.\n");
- rv = we_p->retcode = -ENODEV;
- we_p->status[0] |= STAT_FAILED;
- break;
- case REC_OPERAND_INV:
- case REC_OPERAND_SIZE:
- case REC_EVEN_MOD:
- case REC_INVALID_PAD:
- rv = we_p->retcode = -EINVAL;
- we_p->status[0] |= STAT_FAILED;
- break;
- default:
- we_p->retcode = rv;
- we_p->status[0] |= STAT_FAILED;
- break;
- }
- if (rv != -ERESTARTSYS)
- SET_RDWRMASK(we_p->status[0], STAT_WRITTEN);
- spin_unlock_irq(&queuespinlock);
- if (rv == 0)
- tasklet_schedule(&reader_tasklet);
- return rv;
-}
-
-/**
- * process_results copies the user's work from kernel space.
- */
-static inline int
-z90crypt_process_results(struct work_element *we_p, char __user *buf)
-{
- int rv;
-
- PDEBUG("we_p %p (PID %d)\n", we_p, PID());
-
- LONG2DEVPTR(we_p->devindex)->dev_total_req_cnt++;
- SET_RDWRMASK(we_p->status[0], STAT_READPEND);
-
- rv = 0;
- if (!we_p->buffer) {
- PRINTK("we_p %p PID %d in STAT_READPEND: buffer NULL.\n",
- we_p, PID());
- rv = -ENOBUFF;
- }
-
- if (!rv)
- if ((rv = copy_to_user(buf, we_p->buffer, we_p->buff_size))) {
- PDEBUG("copy_to_user failed: rv = %d\n", rv);
- rv = -EFAULT;
- }
-
- if (!rv)
- rv = we_p->retcode;
- if (!rv)
- if (we_p->resp_buff_size
- && copy_to_user(we_p->resp_addr, we_p->resp_buff,
- we_p->resp_buff_size))
- rv = -EFAULT;
-
- SET_RDWRMASK(we_p->status[0], STAT_NOWORK);
- return rv;
-}
-
-static unsigned char NULL_psmid[8] =
-{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
-
-/**
- * Used in device configuration functions
- */
-#define MAX_RESET 90
-
-/**
- * This is used only for PCICC support
- */
-static inline int
-is_PKCS11_padded(unsigned char *buffer, int length)
-{
- int i;
- if ((buffer[0] != 0x00) || (buffer[1] != 0x01))
- return 0;
- for (i = 2; i < length; i++)
- if (buffer[i] != 0xFF)
- break;
- if ((i < 10) || (i == length))
- return 0;
- if (buffer[i] != 0x00)
- return 0;
- return 1;
-}
-
-/**
- * This is used only for PCICC support
- */
-static inline int
-is_PKCS12_padded(unsigned char *buffer, int length)
-{
- int i;
- if ((buffer[0] != 0x00) || (buffer[1] != 0x02))
- return 0;
- for (i = 2; i < length; i++)
- if (buffer[i] == 0x00)
- break;
- if ((i < 10) || (i == length))
- return 0;
- if (buffer[i] != 0x00)
- return 0;
- return 1;
-}
-
-/**
- * builds struct caller and converts message from generic format to
- * device-dependent format
- * func is ICARSAMODEXPO or ICARSACRT
- * function is PCI_FUNC_KEY_ENCRYPT or PCI_FUNC_KEY_DECRYPT
- */
-static inline int
-build_caller(struct work_element *we_p, short function)
-{
- int rv;
- struct caller *caller_p = (struct caller *)we_p->requestptr;
-
- if ((we_p->devtype != PCICC) && (we_p->devtype != PCICA) &&
- (we_p->devtype != PCIXCC_MCL2) && (we_p->devtype != PCIXCC_MCL3) &&
- (we_p->devtype != CEX2C) && (we_p->devtype != CEX2A))
- return SEN_NOT_AVAIL;
-
- memcpy(caller_p->caller_id, we_p->caller_id,
- sizeof(caller_p->caller_id));
- caller_p->caller_dev_dep_req_p = caller_p->caller_dev_dep_req;
- caller_p->caller_dev_dep_req_l = MAX_RESPONSE_SIZE;
- caller_p->caller_buf_p = we_p->buffer;
- INIT_LIST_HEAD(&(caller_p->caller_liste));
-
- rv = convert_request(we_p->buffer, we_p->funccode, function,
- z90crypt.cdx, we_p->devtype,
- &caller_p->caller_dev_dep_req_l,
- caller_p->caller_dev_dep_req_p);
- if (rv) {
- if (rv == SEN_NOT_AVAIL)
- PDEBUG("request can't be processed on hdwr avail\n");
- else
- PRINTK("Error from convert_request: %d\n", rv);
- }
- else
- memcpy(&(caller_p->caller_dev_dep_req_p[4]), we_p->caller_id,8);
- return rv;
-}
-
-static inline void
-unbuild_caller(struct device *device_p, struct caller *caller_p)
-{
- if (!caller_p)
- return;
- if (caller_p->caller_liste.next && caller_p->caller_liste.prev)
- if (!list_empty(&caller_p->caller_liste)) {
- list_del_init(&caller_p->caller_liste);
- device_p->dev_caller_count--;
- }
- memset(caller_p->caller_id, 0, sizeof(caller_p->caller_id));
-}
-
-static inline int
-get_crypto_request_buffer(struct work_element *we_p)
-{
- struct ica_rsa_modexpo *mex_p;
- struct ica_rsa_modexpo_crt *crt_p;
- unsigned char *temp_buffer;
- short function;
- int rv;
-
- mex_p = (struct ica_rsa_modexpo *) we_p->buffer;
- crt_p = (struct ica_rsa_modexpo_crt *) we_p->buffer;
-
- PDEBUG("device type input = %d\n", we_p->devtype);
-
- if (z90crypt.terminating)
- return REC_NO_RESPONSE;
- if (memcmp(we_p->caller_id, NULL_psmid, 8) == 0) {
- PRINTK("psmid zeroes\n");
- return SEN_FATAL_ERROR;
- }
- if (!we_p->buffer) {
- PRINTK("buffer pointer NULL\n");
- return SEN_USER_ERROR;
- }
- if (!we_p->requestptr) {
- PRINTK("caller pointer NULL\n");
- return SEN_USER_ERROR;
- }
-
- if ((we_p->devtype != PCICA) && (we_p->devtype != PCICC) &&
- (we_p->devtype != PCIXCC_MCL2) && (we_p->devtype != PCIXCC_MCL3) &&
- (we_p->devtype != CEX2C) && (we_p->devtype != CEX2A) &&
- (we_p->devtype != ANYDEV)) {
- PRINTK("invalid device type\n");
- return SEN_USER_ERROR;
- }
-
- if ((mex_p->inputdatalength < 1) ||
- (mex_p->inputdatalength > MAX_MOD_SIZE)) {
- PRINTK("inputdatalength[%d] is not valid\n",
- mex_p->inputdatalength);
- return SEN_USER_ERROR;
- }
-
- if (mex_p->outputdatalength < mex_p->inputdatalength) {
- PRINTK("outputdatalength[%d] < inputdatalength[%d]\n",
- mex_p->outputdatalength, mex_p->inputdatalength);
- return SEN_USER_ERROR;
- }
-
- if (!mex_p->inputdata || !mex_p->outputdata) {
- PRINTK("inputdata[%p] or outputdata[%p] is NULL\n",
- mex_p->outputdata, mex_p->inputdata);
- return SEN_USER_ERROR;
- }
-
- /**
- * As long as outputdatalength is big enough, we can set the
- * outputdatalength equal to the inputdatalength, since that is the
- * number of bytes we will copy in any case
- */
- mex_p->outputdatalength = mex_p->inputdatalength;
-
- rv = 0;
- switch (we_p->funccode) {
- case ICARSAMODEXPO:
- if (!mex_p->b_key || !mex_p->n_modulus)
- rv = SEN_USER_ERROR;
- break;
- case ICARSACRT:
- if (!IS_EVEN(crt_p->inputdatalength)) {
- PRINTK("inputdatalength[%d] is odd, CRT form\n",
- crt_p->inputdatalength);
- rv = SEN_USER_ERROR;
- break;
- }
- if (!crt_p->bp_key ||
- !crt_p->bq_key ||
- !crt_p->np_prime ||
- !crt_p->nq_prime ||
- !crt_p->u_mult_inv) {
- PRINTK("CRT form, bad data: %p/%p/%p/%p/%p\n",
- crt_p->bp_key, crt_p->bq_key,
- crt_p->np_prime, crt_p->nq_prime,
- crt_p->u_mult_inv);
- rv = SEN_USER_ERROR;
- }
- break;
- default:
- PRINTK("bad func = %d\n", we_p->funccode);
- rv = SEN_USER_ERROR;
- break;
- }
- if (rv != 0)
- return rv;
-
- if (select_device_type(&we_p->devtype, mex_p->inputdatalength) < 0)
- return SEN_NOT_AVAIL;
-
- temp_buffer = (unsigned char *)we_p + sizeof(struct work_element) +
- sizeof(struct caller);
- if (copy_from_user(temp_buffer, mex_p->inputdata,
- mex_p->inputdatalength) != 0)
- return SEN_RELEASED;
-
- function = PCI_FUNC_KEY_ENCRYPT;
- switch (we_p->devtype) {
- /* PCICA and CEX2A do everything with a simple RSA mod-expo operation */
- case PCICA:
- case CEX2A:
- function = PCI_FUNC_KEY_ENCRYPT;
- break;
- /**
- * PCIXCC_MCL2 does all Mod-Expo form with a simple RSA mod-expo
- * operation, and all CRT forms with a PKCS-1.2 format decrypt.
- * PCIXCC_MCL3 and CEX2C do all Mod-Expo and CRT forms with a simple RSA
- * mod-expo operation
- */
- case PCIXCC_MCL2:
- if (we_p->funccode == ICARSAMODEXPO)
- function = PCI_FUNC_KEY_ENCRYPT;
- else
- function = PCI_FUNC_KEY_DECRYPT;
- break;
- case PCIXCC_MCL3:
- case CEX2C:
- if (we_p->funccode == ICARSAMODEXPO)
- function = PCI_FUNC_KEY_ENCRYPT;
- else
- function = PCI_FUNC_KEY_DECRYPT;
- break;
- /**
- * PCICC does everything as a PKCS-1.2 format request
- */
- case PCICC:
- /* PCICC cannot handle input that is is PKCS#1.1 padded */
- if (is_PKCS11_padded(temp_buffer, mex_p->inputdatalength)) {
- return SEN_NOT_AVAIL;
- }
- if (we_p->funccode == ICARSAMODEXPO) {
- if (is_PKCS12_padded(temp_buffer,
- mex_p->inputdatalength))
- function = PCI_FUNC_KEY_ENCRYPT;
- else
- function = PCI_FUNC_KEY_DECRYPT;
- } else
- /* all CRT forms are decrypts */
- function = PCI_FUNC_KEY_DECRYPT;
- break;
- }
- PDEBUG("function: %04x\n", function);
- rv = build_caller(we_p, function);
- PDEBUG("rv from build_caller = %d\n", rv);
- return rv;
-}
-
-static inline int
-z90crypt_prepare(struct work_element *we_p, unsigned int funccode,
- const char __user *buffer)
-{
- int rv;
-
- we_p->devindex = -1;
- if (funccode == ICARSAMODEXPO)
- we_p->buff_size = sizeof(struct ica_rsa_modexpo);
- else
- we_p->buff_size = sizeof(struct ica_rsa_modexpo_crt);
-
- if (copy_from_user(we_p->buffer, buffer, we_p->buff_size))
- return -EFAULT;
-
- we_p->audit[0] |= FP_COPYFROM;
- SET_RDWRMASK(we_p->status[0], STAT_WRITTEN);
- we_p->funccode = funccode;
- we_p->devtype = -1;
- we_p->audit[0] |= FP_BUFFREQ;
- rv = get_crypto_request_buffer(we_p);
- switch (rv) {
- case 0:
- we_p->audit[0] |= FP_BUFFGOT;
- break;
- case SEN_USER_ERROR:
- rv = -EINVAL;
- break;
- case SEN_QUEUE_FULL:
- rv = 0;
- break;
- case SEN_RELEASED:
- rv = -EFAULT;
- break;
- case REC_NO_RESPONSE:
- rv = -ENODEV;
- break;
- case SEN_NOT_AVAIL:
- case EGETBUFF:
- rv = -EGETBUFF;
- break;
- default:
- PRINTK("rv = %d\n", rv);
- rv = -EGETBUFF;
- break;
- }
- if (CHK_RDWRMASK(we_p->status[0]) == STAT_WRITTEN)
- SET_RDWRMASK(we_p->status[0], STAT_DEFAULT);
- return rv;
-}
-
-static inline void
-purge_work_element(struct work_element *we_p)
-{
- struct list_head *lptr;
-
- spin_lock_irq(&queuespinlock);
- list_for_each(lptr, &request_list) {
- if (lptr == &we_p->liste) {
- list_del_init(lptr);
- requestq_count--;
- break;
- }
- }
- list_for_each(lptr, &pending_list) {
- if (lptr == &we_p->liste) {
- list_del_init(lptr);
- pendingq_count--;
- break;
- }
- }
- spin_unlock_irq(&queuespinlock);
-}
-
-/**
- * Build the request and send it.
- */
-static inline int
-z90crypt_rsa(struct priv_data *private_data_p, pid_t pid,
- unsigned int cmd, unsigned long arg)
-{
- struct work_element *we_p;
- int rv;
-
- if ((rv = allocate_work_element(&we_p, private_data_p, pid))) {
- PDEBUG("PID %d: allocate_work_element returned ENOMEM\n", pid);
- return rv;
- }
- if ((rv = z90crypt_prepare(we_p, cmd, (const char __user *)arg)))
- PDEBUG("PID %d: rv = %d from z90crypt_prepare\n", pid, rv);
- if (!rv)
- if ((rv = z90crypt_send(we_p, (const char *)arg)))
- PDEBUG("PID %d: rv %d from z90crypt_send.\n", pid, rv);
- if (!rv) {
- we_p->audit[0] |= FP_ASLEEP;
- wait_event(we_p->waitq, atomic_read(&we_p->alarmrung));
- we_p->audit[0] |= FP_AWAKE;
- rv = we_p->retcode;
- }
- if (!rv)
- rv = z90crypt_process_results(we_p, (char __user *)arg);
-
- if ((we_p->status[0] & STAT_FAILED)) {
- switch (rv) {
- /**
- * EINVAL *after* receive is almost always a padding error or
- * length error issued by a coprocessor (not an accelerator).
- * We convert this return value to -EGETBUFF which should
- * trigger a fallback to software.
- */
- case -EINVAL:
- if ((we_p->devtype != PCICA) &&
- (we_p->devtype != CEX2A))
- rv = -EGETBUFF;
- break;
- case -ETIMEOUT:
- if (z90crypt.mask.st_count > 0)
- rv = -ERESTARTSYS; // retry with another
- else
- rv = -ENODEV; // no cards left
- /* fall through to clean up request queue */
- case -ERESTARTSYS:
- case -ERELEASED:
- switch (CHK_RDWRMASK(we_p->status[0])) {
- case STAT_WRITTEN:
- purge_work_element(we_p);
- break;
- case STAT_READPEND:
- case STAT_NOWORK:
- default:
- break;
- }
- break;
- default:
- we_p->status[0] ^= STAT_FAILED;
- break;
- }
- }
- free_page((long)we_p);
- return rv;
-}
-
-/**
- * This function is a little long, but it's really just one large switch
- * statement.
- */
-static long
-z90crypt_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
- struct priv_data *private_data_p = filp->private_data;
- unsigned char *status;
- unsigned char *qdepth;
- unsigned int *reqcnt;
- struct ica_z90_status *pstat;
- int ret, i, loopLim, tempstat;
- static int deprecated_msg_count1 = 0;
- static int deprecated_msg_count2 = 0;
-
- PDEBUG("filp %p (PID %d), cmd 0x%08X\n", filp, PID(), cmd);
- PDEBUG("cmd 0x%08X: dir %s, size 0x%04X, type 0x%02X, nr 0x%02X\n",
- cmd,
- !_IOC_DIR(cmd) ? "NO"
- : ((_IOC_DIR(cmd) == (_IOC_READ|_IOC_WRITE)) ? "RW"
- : ((_IOC_DIR(cmd) == _IOC_READ) ? "RD"
- : "WR")),
- _IOC_SIZE(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd));
-
- if (_IOC_TYPE(cmd) != Z90_IOCTL_MAGIC) {
- PRINTK("cmd 0x%08X contains bad magic\n", cmd);
- return -ENOTTY;
- }
-
- ret = 0;
- switch (cmd) {
- case ICARSAMODEXPO:
- case ICARSACRT:
- if (quiesce_z90crypt) {
- ret = -EQUIESCE;
- break;
- }
- ret = -ENODEV; // Default if no devices
- loopLim = z90crypt.hdware_info->hdware_mask.st_count -
- (z90crypt.hdware_info->hdware_mask.disabled_count +
- z90crypt.hdware_info->hdware_mask.user_disabled_count);
- for (i = 0; i < loopLim; i++) {
- ret = z90crypt_rsa(private_data_p, PID(), cmd, arg);
- if (ret != -ERESTARTSYS)
- break;
- }
- if (ret == -ERESTARTSYS)
- ret = -ENODEV;
- break;
-
- case Z90STAT_TOTALCOUNT:
- tempstat = get_status_totalcount();
- if (copy_to_user((int __user *)arg, &tempstat,sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90STAT_PCICACOUNT:
- tempstat = get_status_PCICAcount();
- if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90STAT_PCICCCOUNT:
- tempstat = get_status_PCICCcount();
- if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90STAT_PCIXCCMCL2COUNT:
- tempstat = get_status_PCIXCCMCL2count();
- if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90STAT_PCIXCCMCL3COUNT:
- tempstat = get_status_PCIXCCMCL3count();
- if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90STAT_CEX2CCOUNT:
- tempstat = get_status_CEX2Ccount();
- if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90STAT_CEX2ACOUNT:
- tempstat = get_status_CEX2Acount();
- if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90STAT_REQUESTQ_COUNT:
- tempstat = get_status_requestq_count();
- if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90STAT_PENDINGQ_COUNT:
- tempstat = get_status_pendingq_count();
- if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90STAT_TOTALOPEN_COUNT:
- tempstat = get_status_totalopen_count();
- if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90STAT_DOMAIN_INDEX:
- tempstat = get_status_domain_index();
- if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90STAT_STATUS_MASK:
- status = kmalloc(Z90CRYPT_NUM_APS, GFP_KERNEL);
- if (!status) {
- PRINTK("kmalloc for status failed!\n");
- ret = -ENOMEM;
- break;
- }
- get_status_status_mask(status);
- if (copy_to_user((char __user *) arg, status, Z90CRYPT_NUM_APS)
- != 0)
- ret = -EFAULT;
- kfree(status);
- break;
-
- case Z90STAT_QDEPTH_MASK:
- qdepth = kmalloc(Z90CRYPT_NUM_APS, GFP_KERNEL);
- if (!qdepth) {
- PRINTK("kmalloc for qdepth failed!\n");
- ret = -ENOMEM;
- break;
- }
- get_status_qdepth_mask(qdepth);
- if (copy_to_user((char __user *) arg, qdepth, Z90CRYPT_NUM_APS) != 0)
- ret = -EFAULT;
- kfree(qdepth);
- break;
-
- case Z90STAT_PERDEV_REQCNT:
- reqcnt = kmalloc(sizeof(int) * Z90CRYPT_NUM_APS, GFP_KERNEL);
- if (!reqcnt) {
- PRINTK("kmalloc for reqcnt failed!\n");
- ret = -ENOMEM;
- break;
- }
- get_status_perdevice_reqcnt(reqcnt);
- if (copy_to_user((char __user *) arg, reqcnt,
- Z90CRYPT_NUM_APS * sizeof(int)) != 0)
- ret = -EFAULT;
- kfree(reqcnt);
- break;
-
- /* THIS IS DEPRECATED. USE THE NEW STATUS CALLS */
- case ICAZ90STATUS:
- if (deprecated_msg_count1 < 20) {
- PRINTK("deprecated call to ioctl (ICAZ90STATUS)!\n");
- deprecated_msg_count1++;
- if (deprecated_msg_count1 == 20)
- PRINTK("No longer issuing messages related to "
- "deprecated call to ICAZ90STATUS.\n");
- }
-
- pstat = kmalloc(sizeof(struct ica_z90_status), GFP_KERNEL);
- if (!pstat) {
- PRINTK("kmalloc for pstat failed!\n");
- ret = -ENOMEM;
- break;
- }
-
- pstat->totalcount = get_status_totalcount();
- pstat->leedslitecount = get_status_PCICAcount();
- pstat->leeds2count = get_status_PCICCcount();
- pstat->requestqWaitCount = get_status_requestq_count();
- pstat->pendingqWaitCount = get_status_pendingq_count();
- pstat->totalOpenCount = get_status_totalopen_count();
- pstat->cryptoDomain = get_status_domain_index();
- get_status_status_mask(pstat->status);
- get_status_qdepth_mask(pstat->qdepth);
-
- if (copy_to_user((struct ica_z90_status __user *) arg, pstat,
- sizeof(struct ica_z90_status)) != 0)
- ret = -EFAULT;
- kfree(pstat);
- break;
-
- /* THIS IS DEPRECATED. USE THE NEW STATUS CALLS */
- case Z90STAT_PCIXCCCOUNT:
- if (deprecated_msg_count2 < 20) {
- PRINTK("deprecated ioctl (Z90STAT_PCIXCCCOUNT)!\n");
- deprecated_msg_count2++;
- if (deprecated_msg_count2 == 20)
- PRINTK("No longer issuing messages about depre"
- "cated ioctl Z90STAT_PCIXCCCOUNT.\n");
- }
-
- tempstat = get_status_PCIXCCcount();
- if (copy_to_user((int *)arg, &tempstat, sizeof(int)) != 0)
- ret = -EFAULT;
- break;
-
- case Z90QUIESCE:
- if (current->euid != 0) {
- PRINTK("QUIESCE fails: euid %d\n",
- current->euid);
- ret = -EACCES;
- } else {
- PRINTK("QUIESCE device from PID %d\n", PID());
- quiesce_z90crypt = 1;
- }
- break;
-
- default:
- /* user passed an invalid IOCTL number */
- PDEBUG("cmd 0x%08X contains invalid ioctl code\n", cmd);
- ret = -ENOTTY;
- break;
- }
-
- return ret;
-}
-
-static inline int
-sprintcl(unsigned char *outaddr, unsigned char *addr, unsigned int len)
-{
- int hl, i;
-
- hl = 0;
- for (i = 0; i < len; i++)
- hl += sprintf(outaddr+hl, "%01x", (unsigned int) addr[i]);
- hl += sprintf(outaddr+hl, " ");
-
- return hl;
-}
-
-static inline int
-sprintrw(unsigned char *outaddr, unsigned char *addr, unsigned int len)
-{
- int hl, inl, c, cx;
-
- hl = sprintf(outaddr, " ");
- inl = 0;
- for (c = 0; c < (len / 16); c++) {
- hl += sprintcl(outaddr+hl, addr+inl, 16);
- inl += 16;
- }
-
- cx = len%16;
- if (cx) {
- hl += sprintcl(outaddr+hl, addr+inl, cx);
- inl += cx;
- }
-
- hl += sprintf(outaddr+hl, "\n");
-
- return hl;
-}
-
-static inline int
-sprinthx(unsigned char *title, unsigned char *outaddr,
- unsigned char *addr, unsigned int len)
-{
- int hl, inl, r, rx;
-
- hl = sprintf(outaddr, "\n%s\n", title);
- inl = 0;
- for (r = 0; r < (len / 64); r++) {
- hl += sprintrw(outaddr+hl, addr+inl, 64);
- inl += 64;
- }
- rx = len % 64;
- if (rx) {
- hl += sprintrw(outaddr+hl, addr+inl, rx);
- inl += rx;
- }
-
- hl += sprintf(outaddr+hl, "\n");
-
- return hl;
-}
-
-static inline int
-sprinthx4(unsigned char *title, unsigned char *outaddr,
- unsigned int *array, unsigned int len)
-{
- int hl, r;
-
- hl = sprintf(outaddr, "\n%s\n", title);
-
- for (r = 0; r < len; r++) {
- if ((r % 8) == 0)
- hl += sprintf(outaddr+hl, " ");
- hl += sprintf(outaddr+hl, "%08X ", array[r]);
- if ((r % 8) == 7)
- hl += sprintf(outaddr+hl, "\n");
- }
-
- hl += sprintf(outaddr+hl, "\n");
-
- return hl;
-}
-
-static int
-z90crypt_status(char *resp_buff, char **start, off_t offset,
- int count, int *eof, void *data)
-{
- unsigned char *workarea;
- int len;
-
- /* resp_buff is a page. Use the right half for a work area */
- workarea = resp_buff+2000;
- len = 0;
- len += sprintf(resp_buff+len, "\nz90crypt version: %d.%d.%d\n",
- z90crypt_VERSION, z90crypt_RELEASE, z90crypt_VARIANT);
- len += sprintf(resp_buff+len, "Cryptographic domain: %d\n",
- get_status_domain_index());
- len += sprintf(resp_buff+len, "Total device count: %d\n",
- get_status_totalcount());
- len += sprintf(resp_buff+len, "PCICA count: %d\n",
- get_status_PCICAcount());
- len += sprintf(resp_buff+len, "PCICC count: %d\n",
- get_status_PCICCcount());
- len += sprintf(resp_buff+len, "PCIXCC MCL2 count: %d\n",
- get_status_PCIXCCMCL2count());
- len += sprintf(resp_buff+len, "PCIXCC MCL3 count: %d\n",
- get_status_PCIXCCMCL3count());
- len += sprintf(resp_buff+len, "CEX2C count: %d\n",
- get_status_CEX2Ccount());
- len += sprintf(resp_buff+len, "CEX2A count: %d\n",
- get_status_CEX2Acount());
- len += sprintf(resp_buff+len, "requestq count: %d\n",
- get_status_requestq_count());
- len += sprintf(resp_buff+len, "pendingq count: %d\n",
- get_status_pendingq_count());
- len += sprintf(resp_buff+len, "Total open handles: %d\n\n",
- get_status_totalopen_count());
- len += sprinthx(
- "Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) "
- "4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A",
- resp_buff+len,
- get_status_status_mask(workarea),
- Z90CRYPT_NUM_APS);
- len += sprinthx("Waiting work element counts",
- resp_buff+len,
- get_status_qdepth_mask(workarea),
- Z90CRYPT_NUM_APS);
- len += sprinthx4(
- "Per-device successfully completed request counts",
- resp_buff+len,
- get_status_perdevice_reqcnt((unsigned int *)workarea),
- Z90CRYPT_NUM_APS);
- *eof = 1;
- memset(workarea, 0, Z90CRYPT_NUM_APS * sizeof(unsigned int));
- return len;
-}
-
-static inline void
-disable_card(int card_index)
-{
- struct device *devp;
-
- devp = LONG2DEVPTR(card_index);
- if (!devp || devp->user_disabled)
- return;
- devp->user_disabled = 1;
- z90crypt.hdware_info->hdware_mask.user_disabled_count++;
- if (devp->dev_type == -1)
- return;
- z90crypt.hdware_info->type_mask[devp->dev_type].user_disabled_count++;
-}
-
-static inline void
-enable_card(int card_index)
-{
- struct device *devp;
-
- devp = LONG2DEVPTR(card_index);
- if (!devp || !devp->user_disabled)
- return;
- devp->user_disabled = 0;
- z90crypt.hdware_info->hdware_mask.user_disabled_count--;
- if (devp->dev_type == -1)
- return;
- z90crypt.hdware_info->type_mask[devp->dev_type].user_disabled_count--;
-}
-
-static int
-z90crypt_status_write(struct file *file, const char __user *buffer,
- unsigned long count, void *data)
-{
- int j, eol;
- unsigned char *lbuf, *ptr;
- unsigned int local_count;
-
-#define LBUFSIZE 1200
- lbuf = kmalloc(LBUFSIZE, GFP_KERNEL);
- if (!lbuf) {
- PRINTK("kmalloc failed!\n");
- return 0;
- }
-
- if (count <= 0)
- return 0;
-
- local_count = UMIN((unsigned int)count, LBUFSIZE-1);
-
- if (copy_from_user(lbuf, buffer, local_count) != 0) {
- kfree(lbuf);
- return -EFAULT;
- }
-
- lbuf[local_count] = '\0';
-
- ptr = strstr(lbuf, "Online devices");
- if (ptr == 0) {
- PRINTK("Unable to parse data (missing \"Online devices\")\n");
- kfree(lbuf);
- return count;
- }
-
- ptr = strstr(ptr, "\n");
- if (ptr == 0) {
- PRINTK("Unable to parse data (missing newline after \"Online devices\")\n");
- kfree(lbuf);
- return count;
- }
- ptr++;
-
- if (strstr(ptr, "Waiting work element counts") == NULL) {
- PRINTK("Unable to parse data (missing \"Waiting work element counts\")\n");
- kfree(lbuf);
- return count;
- }
-
- j = 0;
- eol = 0;
- while ((j < 64) && (*ptr != '\0')) {
- switch (*ptr) {
- case '\t':
- case ' ':
- break;
- case '\n':
- default:
- eol = 1;
- break;
- case '0': // no device
- case '1': // PCICA
- case '2': // PCICC
- case '3': // PCIXCC_MCL2
- case '4': // PCIXCC_MCL3
- case '5': // CEX2C
- case '6': // CEX2A
- j++;
- break;
- case 'd':
- case 'D':
- disable_card(j);
- j++;
- break;
- case 'e':
- case 'E':
- enable_card(j);
- j++;
- break;
- }
- if (eol)
- break;
- ptr++;
- }
-
- kfree(lbuf);
- return count;
-}
-
-/**
- * Functions that run under a timer, with no process id
- *
- * The task functions:
- * z90crypt_reader_task
- * helper_send_work
- * helper_handle_work_element
- * helper_receive_rc
- * z90crypt_config_task
- * z90crypt_cleanup_task
- *
- * Helper functions:
- * z90crypt_schedule_reader_timer
- * z90crypt_schedule_reader_task
- * z90crypt_schedule_config_task
- * z90crypt_schedule_cleanup_task
- */
-static inline int
-receive_from_crypto_device(int index, unsigned char *psmid, int *buff_len_p,
- unsigned char *buff, unsigned char __user **dest_p_p)
-{
- int dv, rv;
- struct device *dev_ptr;
- struct caller *caller_p;
- struct ica_rsa_modexpo *icaMsg_p;
- struct list_head *ptr, *tptr;
-
- memcpy(psmid, NULL_psmid, sizeof(NULL_psmid));
-
- if (z90crypt.terminating)
- return REC_FATAL_ERROR;
-
- caller_p = 0;
- dev_ptr = z90crypt.device_p[index];
- rv = 0;
- do {
- if (!dev_ptr || dev_ptr->disabled) {
- rv = REC_NO_WORK; // a disabled device can't return work
- break;
- }
- if (dev_ptr->dev_self_x != index) {
- PRINTKC("Corrupt dev ptr\n");
- z90crypt.terminating = 1;
- rv = REC_FATAL_ERROR;
- break;
- }
- if (!dev_ptr->dev_resp_l || !dev_ptr->dev_resp_p) {
- dv = DEV_REC_EXCEPTION;
- PRINTK("dev_resp_l = %d, dev_resp_p = %p\n",
- dev_ptr->dev_resp_l, dev_ptr->dev_resp_p);
- } else {
- PDEBUG("Dequeue called for device %d\n", index);
- dv = receive_from_AP(index, z90crypt.cdx,
- dev_ptr->dev_resp_l,
- dev_ptr->dev_resp_p, psmid);
- }
- switch (dv) {
- case DEV_REC_EXCEPTION:
- rv = REC_FATAL_ERROR;
- z90crypt.terminating = 1;
- PRINTKC("Exception in receive from device %d\n",
- index);
- break;
- case DEV_ONLINE:
- rv = 0;
- break;
- case DEV_EMPTY:
- rv = REC_EMPTY;
- break;
- case DEV_NO_WORK:
- rv = REC_NO_WORK;
- break;
- case DEV_BAD_MESSAGE:
- case DEV_GONE:
- case REC_HARDWAR_ERR:
- default:
- rv = REC_NO_RESPONSE;
- break;
- }
- if (rv)
- break;
- if (dev_ptr->dev_caller_count <= 0) {
- rv = REC_USER_GONE;
- break;
- }
-
- list_for_each_safe(ptr, tptr, &dev_ptr->dev_caller_list) {
- caller_p = list_entry(ptr, struct caller, caller_liste);
- if (!memcmp(caller_p->caller_id, psmid,
- sizeof(caller_p->caller_id))) {
- if (!list_empty(&caller_p->caller_liste)) {
- list_del_init(ptr);
- dev_ptr->dev_caller_count--;
- break;
- }
- }
- caller_p = 0;
- }
- if (!caller_p) {
- PRINTKW("Unable to locate PSMID %02X%02X%02X%02X%02X"
- "%02X%02X%02X in device list\n",
- psmid[0], psmid[1], psmid[2], psmid[3],
- psmid[4], psmid[5], psmid[6], psmid[7]);
- rv = REC_USER_GONE;
- break;
- }
-
- PDEBUG("caller_p after successful receive: %p\n", caller_p);
- rv = convert_response(dev_ptr->dev_resp_p,
- caller_p->caller_buf_p, buff_len_p, buff);
- switch (rv) {
- case REC_USE_PCICA:
- break;
- case REC_OPERAND_INV:
- case REC_OPERAND_SIZE:
- case REC_EVEN_MOD:
- case REC_INVALID_PAD:
- PDEBUG("device %d: 'user error' %d\n", index, rv);
- break;
- case WRONG_DEVICE_TYPE:
- case REC_HARDWAR_ERR:
- case REC_BAD_MESSAGE:
- PRINTKW("device %d: hardware error %d\n", index, rv);
- rv = REC_NO_RESPONSE;
- break;
- default:
- PDEBUG("device %d: rv = %d\n", index, rv);
- break;
- }
- } while (0);
-
- switch (rv) {
- case 0:
- PDEBUG("Successful receive from device %d\n", index);
- icaMsg_p = (struct ica_rsa_modexpo *)caller_p->caller_buf_p;
- *dest_p_p = icaMsg_p->outputdata;
- if (*buff_len_p == 0)
- PRINTK("Zero *buff_len_p\n");
- break;
- case REC_NO_RESPONSE:
- PRINTKW("Removing device %d from availability\n", index);
- remove_device(dev_ptr);
- break;
- }
-
- if (caller_p)
- unbuild_caller(dev_ptr, caller_p);
-
- return rv;
-}
-
-static inline void
-helper_send_work(int index)
-{
- struct work_element *rq_p;
- int rv;
-
- if (list_empty(&request_list))
- return;
- requestq_count--;
- rq_p = list_entry(request_list.next, struct work_element, liste);
- list_del_init(&rq_p->liste);
- rq_p->audit[1] |= FP_REMREQUEST;
- if (rq_p->devtype == SHRT2DEVPTR(index)->dev_type) {
- rq_p->devindex = SHRT2LONG(index);
- rv = send_to_crypto_device(rq_p);
- if (rv == 0) {
- rq_p->requestsent = jiffies;
- rq_p->audit[0] |= FP_SENT;
- list_add_tail(&rq_p->liste, &pending_list);
- ++pendingq_count;
- rq_p->audit[0] |= FP_PENDING;
- } else {
- switch (rv) {
- case REC_OPERAND_INV:
- case REC_OPERAND_SIZE:
- case REC_EVEN_MOD:
- case REC_INVALID_PAD:
- rq_p->retcode = -EINVAL;
- break;
- case SEN_NOT_AVAIL:
- case SEN_RETRY:
- case REC_NO_RESPONSE:
- default:
- if (z90crypt.mask.st_count > 1)
- rq_p->retcode =
- -ERESTARTSYS;
- else
- rq_p->retcode = -ENODEV;
- break;
- }
- rq_p->status[0] |= STAT_FAILED;
- rq_p->audit[1] |= FP_AWAKENING;
- atomic_set(&rq_p->alarmrung, 1);
- wake_up(&rq_p->waitq);
- }
- } else {
- if (z90crypt.mask.st_count > 1)
- rq_p->retcode = -ERESTARTSYS;
- else
- rq_p->retcode = -ENODEV;
- rq_p->status[0] |= STAT_FAILED;
- rq_p->audit[1] |= FP_AWAKENING;
- atomic_set(&rq_p->alarmrung, 1);
- wake_up(&rq_p->waitq);
- }
-}
-
-static inline void
-helper_handle_work_element(int index, unsigned char psmid[8], int rc,
- int buff_len, unsigned char *buff,
- unsigned char __user *resp_addr)
-{
- struct work_element *pq_p;
- struct list_head *lptr, *tptr;
-
- pq_p = 0;
- list_for_each_safe(lptr, tptr, &pending_list) {
- pq_p = list_entry(lptr, struct work_element, liste);
- if (!memcmp(pq_p->caller_id, psmid, sizeof(pq_p->caller_id))) {
- list_del_init(lptr);
- pendingq_count--;
- pq_p->audit[1] |= FP_NOTPENDING;
- break;
- }
- pq_p = 0;
- }
-
- if (!pq_p) {
- PRINTK("device %d has work but no caller exists on pending Q\n",
- SHRT2LONG(index));
- return;
- }
-
- switch (rc) {
- case 0:
- pq_p->resp_buff_size = buff_len;
- pq_p->audit[1] |= FP_RESPSIZESET;
- if (buff_len) {
- pq_p->resp_addr = resp_addr;
- pq_p->audit[1] |= FP_RESPADDRCOPIED;
- memcpy(pq_p->resp_buff, buff, buff_len);
- pq_p->audit[1] |= FP_RESPBUFFCOPIED;
- }
- break;
- case REC_OPERAND_INV:
- case REC_OPERAND_SIZE:
- case REC_EVEN_MOD:
- case REC_INVALID_PAD:
- PDEBUG("-EINVAL after application error %d\n", rc);
- pq_p->retcode = -EINVAL;
- pq_p->status[0] |= STAT_FAILED;
- break;
- case REC_USE_PCICA:
- pq_p->retcode = -ERESTARTSYS;
- pq_p->status[0] |= STAT_FAILED;
- break;
- case REC_NO_RESPONSE:
- default:
- if (z90crypt.mask.st_count > 1)
- pq_p->retcode = -ERESTARTSYS;
- else
- pq_p->retcode = -ENODEV;
- pq_p->status[0] |= STAT_FAILED;
- break;
- }
- if ((pq_p->status[0] != STAT_FAILED) || (pq_p->retcode != -ERELEASED)) {
- pq_p->audit[1] |= FP_AWAKENING;
- atomic_set(&pq_p->alarmrung, 1);
- wake_up(&pq_p->waitq);
- }
-}
-
-/**
- * return TRUE if the work element should be removed from the queue
- */
-static inline int
-helper_receive_rc(int index, int *rc_p)
-{
- switch (*rc_p) {
- case 0:
- case REC_OPERAND_INV:
- case REC_OPERAND_SIZE:
- case REC_EVEN_MOD:
- case REC_INVALID_PAD:
- case REC_USE_PCICA:
- break;
-
- case REC_BUSY:
- case REC_NO_WORK:
- case REC_EMPTY:
- case REC_RETRY_DEV:
- case REC_FATAL_ERROR:
- return 0;
-
- case REC_NO_RESPONSE:
- break;
-
- default:
- PRINTK("rc %d, device %d converted to REC_NO_RESPONSE\n",
- *rc_p, SHRT2LONG(index));
- *rc_p = REC_NO_RESPONSE;
- break;
- }
- return 1;
-}
-
-static inline void
-z90crypt_schedule_reader_timer(void)
-{
- if (timer_pending(&reader_timer))
- return;
- if (mod_timer(&reader_timer, jiffies+(READERTIME*HZ/1000)) != 0)
- PRINTK("Timer pending while modifying reader timer\n");
-}
-
-static void
-z90crypt_reader_task(unsigned long ptr)
-{
- int workavail, index, rc, buff_len;
- unsigned char psmid[8];
- unsigned char __user *resp_addr;
- static unsigned char buff[1024];
-
- /**
- * we use workavail = 2 to ensure 2 passes with nothing dequeued before
- * exiting the loop. If (pendingq_count+requestq_count) == 0 after the
- * loop, there is no work remaining on the queues.
- */
- resp_addr = 0;
- workavail = 2;
- buff_len = 0;
- while (workavail) {
- workavail--;
- rc = 0;
- spin_lock_irq(&queuespinlock);
- memset(buff, 0x00, sizeof(buff));
-
- /* Dequeue once from each device in round robin. */
- for (index = 0; index < z90crypt.mask.st_count; index++) {
- PDEBUG("About to receive.\n");
- rc = receive_from_crypto_device(SHRT2LONG(index),
- psmid,
- &buff_len,
- buff,
- &resp_addr);
- PDEBUG("Dequeued: rc = %d.\n", rc);
-
- if (helper_receive_rc(index, &rc)) {
- if (rc != REC_NO_RESPONSE) {
- helper_send_work(index);
- workavail = 2;
- }
-
- helper_handle_work_element(index, psmid, rc,
- buff_len, buff,
- resp_addr);
- }
-
- if (rc == REC_FATAL_ERROR)
- PRINTKW("REC_FATAL_ERROR from device %d!\n",
- SHRT2LONG(index));
- }
- spin_unlock_irq(&queuespinlock);
- }
-
- if (pendingq_count + requestq_count)
- z90crypt_schedule_reader_timer();
-}
-
-static inline void
-z90crypt_schedule_config_task(unsigned int expiration)
-{
- if (timer_pending(&config_timer))
- return;
- if (mod_timer(&config_timer, jiffies+(expiration*HZ)) != 0)
- PRINTK("Timer pending while modifying config timer\n");
-}
-
-static void
-z90crypt_config_task(unsigned long ptr)
-{
- int rc;
-
- PDEBUG("jiffies %ld\n", jiffies);
-
- if ((rc = refresh_z90crypt(&z90crypt.cdx)))
- PRINTK("Error %d detected in refresh_z90crypt.\n", rc);
- /* If return was fatal, don't bother reconfiguring */
- if ((rc != TSQ_FATAL_ERROR) && (rc != RSQ_FATAL_ERROR))
- z90crypt_schedule_config_task(CONFIGTIME);
-}
-
-static inline void
-z90crypt_schedule_cleanup_task(void)
-{
- if (timer_pending(&cleanup_timer))
- return;
- if (mod_timer(&cleanup_timer, jiffies+(CLEANUPTIME*HZ)) != 0)
- PRINTK("Timer pending while modifying cleanup timer\n");
-}
-
-static inline void
-helper_drain_queues(void)
-{
- struct work_element *pq_p;
- struct list_head *lptr, *tptr;
-
- list_for_each_safe(lptr, tptr, &pending_list) {
- pq_p = list_entry(lptr, struct work_element, liste);
- pq_p->retcode = -ENODEV;
- pq_p->status[0] |= STAT_FAILED;
- unbuild_caller(LONG2DEVPTR(pq_p->devindex),
- (struct caller *)pq_p->requestptr);
- list_del_init(lptr);
- pendingq_count--;
- pq_p->audit[1] |= FP_NOTPENDING;
- pq_p->audit[1] |= FP_AWAKENING;
- atomic_set(&pq_p->alarmrung, 1);
- wake_up(&pq_p->waitq);
- }
-
- list_for_each_safe(lptr, tptr, &request_list) {
- pq_p = list_entry(lptr, struct work_element, liste);
- pq_p->retcode = -ENODEV;
- pq_p->status[0] |= STAT_FAILED;
- list_del_init(lptr);
- requestq_count--;
- pq_p->audit[1] |= FP_REMREQUEST;
- pq_p->audit[1] |= FP_AWAKENING;
- atomic_set(&pq_p->alarmrung, 1);
- wake_up(&pq_p->waitq);
- }
-}
-
-static inline void
-helper_timeout_requests(void)
-{
- struct work_element *pq_p;
- struct list_head *lptr, *tptr;
- long timelimit;
-
- timelimit = jiffies - (CLEANUPTIME * HZ);
- /* The list is in strict chronological order */
- list_for_each_safe(lptr, tptr, &pending_list) {
- pq_p = list_entry(lptr, struct work_element, liste);
- if (pq_p->requestsent >= timelimit)
- break;
- PRINTKW("Purging(PQ) PSMID %02X%02X%02X%02X%02X%02X%02X%02X\n",
- ((struct caller *)pq_p->requestptr)->caller_id[0],
- ((struct caller *)pq_p->requestptr)->caller_id[1],
- ((struct caller *)pq_p->requestptr)->caller_id[2],
- ((struct caller *)pq_p->requestptr)->caller_id[3],
- ((struct caller *)pq_p->requestptr)->caller_id[4],
- ((struct caller *)pq_p->requestptr)->caller_id[5],
- ((struct caller *)pq_p->requestptr)->caller_id[6],
- ((struct caller *)pq_p->requestptr)->caller_id[7]);
- pq_p->retcode = -ETIMEOUT;
- pq_p->status[0] |= STAT_FAILED;
- /* get this off any caller queue it may be on */
- unbuild_caller(LONG2DEVPTR(pq_p->devindex),
- (struct caller *) pq_p->requestptr);
- list_del_init(lptr);
- pendingq_count--;
- pq_p->audit[1] |= FP_TIMEDOUT;
- pq_p->audit[1] |= FP_NOTPENDING;
- pq_p->audit[1] |= FP_AWAKENING;
- atomic_set(&pq_p->alarmrung, 1);
- wake_up(&pq_p->waitq);
- }
-
- /**
- * If pending count is zero, items left on the request queue may
- * never be processed.
- */
- if (pendingq_count <= 0) {
- list_for_each_safe(lptr, tptr, &request_list) {
- pq_p = list_entry(lptr, struct work_element, liste);
- if (pq_p->requestsent >= timelimit)
- break;
- PRINTKW("Purging(RQ) PSMID %02X%02X%02X%02X%02X%02X%02X%02X\n",
- ((struct caller *)pq_p->requestptr)->caller_id[0],
- ((struct caller *)pq_p->requestptr)->caller_id[1],
- ((struct caller *)pq_p->requestptr)->caller_id[2],
- ((struct caller *)pq_p->requestptr)->caller_id[3],
- ((struct caller *)pq_p->requestptr)->caller_id[4],
- ((struct caller *)pq_p->requestptr)->caller_id[5],
- ((struct caller *)pq_p->requestptr)->caller_id[6],
- ((struct caller *)pq_p->requestptr)->caller_id[7]);
- pq_p->retcode = -ETIMEOUT;
- pq_p->status[0] |= STAT_FAILED;
- list_del_init(lptr);
- requestq_count--;
- pq_p->audit[1] |= FP_TIMEDOUT;
- pq_p->audit[1] |= FP_REMREQUEST;
- pq_p->audit[1] |= FP_AWAKENING;
- atomic_set(&pq_p->alarmrung, 1);
- wake_up(&pq_p->waitq);
- }
- }
-}
-
-static void
-z90crypt_cleanup_task(unsigned long ptr)
-{
- PDEBUG("jiffies %ld\n", jiffies);
- spin_lock_irq(&queuespinlock);
- if (z90crypt.mask.st_count <= 0) // no devices!
- helper_drain_queues();
- else
- helper_timeout_requests();
- spin_unlock_irq(&queuespinlock);
- z90crypt_schedule_cleanup_task();
-}
-
-static void
-z90crypt_schedule_reader_task(unsigned long ptr)
-{
- tasklet_schedule(&reader_tasklet);
-}
-
-/**
- * Lowlevel Functions:
- *
- * create_z90crypt: creates and initializes basic data structures
- * refresh_z90crypt: re-initializes basic data structures
- * find_crypto_devices: returns a count and mask of hardware status
- * create_crypto_device: builds the descriptor for a device
- * destroy_crypto_device: unallocates the descriptor for a device
- * destroy_z90crypt: drains all work, unallocates structs
- */
-
-/**
- * build the z90crypt root structure using the given domain index
- */
-static int
-create_z90crypt(int *cdx_p)
-{
- struct hdware_block *hdware_blk_p;
-
- memset(&z90crypt, 0x00, sizeof(struct z90crypt));
- z90crypt.domain_established = 0;
- z90crypt.len = sizeof(struct z90crypt);
- z90crypt.max_count = Z90CRYPT_NUM_DEVS;
- z90crypt.cdx = *cdx_p;
-
- hdware_blk_p = kzalloc(sizeof(struct hdware_block), GFP_ATOMIC);
- if (!hdware_blk_p) {
- PDEBUG("kmalloc for hardware block failed\n");
- return ENOMEM;
- }
- z90crypt.hdware_info = hdware_blk_p;
-
- return 0;
-}
-
-static inline int
-helper_scan_devices(int cdx_array[16], int *cdx_p, int *correct_cdx_found)
-{
- enum hdstat hd_stat;
- int q_depth, dev_type;
- int indx, chkdom, numdomains;
-
- q_depth = dev_type = numdomains = 0;
- for (chkdom = 0; chkdom <= 15; cdx_array[chkdom++] = -1);
- for (indx = 0; indx < z90crypt.max_count; indx++) {
- hd_stat = HD_NOT_THERE;
- numdomains = 0;
- for (chkdom = 0; chkdom <= 15; chkdom++) {
- hd_stat = query_online(indx, chkdom, MAX_RESET,
- &q_depth, &dev_type);
- if (hd_stat == HD_TSQ_EXCEPTION) {
- z90crypt.terminating = 1;
- PRINTKC("exception taken!\n");
- break;
- }
- if (hd_stat == HD_ONLINE) {
- cdx_array[numdomains++] = chkdom;
- if (*cdx_p == chkdom) {
- *correct_cdx_found = 1;
- break;
- }
- }
- }
- if ((*correct_cdx_found == 1) || (numdomains != 0))
- break;
- if (z90crypt.terminating)
- break;
- }
- return numdomains;
-}
-
-static inline int
-probe_crypto_domain(int *cdx_p)
-{
- int cdx_array[16];
- char cdx_array_text[53], temp[5];
- int correct_cdx_found, numdomains;
-
- correct_cdx_found = 0;
- numdomains = helper_scan_devices(cdx_array, cdx_p, &correct_cdx_found);
-
- if (z90crypt.terminating)
- return TSQ_FATAL_ERROR;
-
- if (correct_cdx_found)
- return 0;
-
- if (numdomains == 0) {
- PRINTKW("Unable to find crypto domain: No devices found\n");
- return Z90C_NO_DEVICES;
- }
-
- if (numdomains == 1) {
- if (*cdx_p == -1) {
- *cdx_p = cdx_array[0];
- return 0;
- }
- PRINTKW("incorrect domain: specified = %d, found = %d\n",
- *cdx_p, cdx_array[0]);
- return Z90C_INCORRECT_DOMAIN;
- }
-
- numdomains--;
- sprintf(cdx_array_text, "%d", cdx_array[numdomains]);
- while (numdomains) {
- numdomains--;
- sprintf(temp, ", %d", cdx_array[numdomains]);
- strcat(cdx_array_text, temp);
- }
-
- PRINTKW("ambiguous domain detected: specified = %d, found array = %s\n",
- *cdx_p, cdx_array_text);
- return Z90C_AMBIGUOUS_DOMAIN;
-}
-
-static int
-refresh_z90crypt(int *cdx_p)
-{
- int i, j, indx, rv;
- static struct status local_mask;
- struct device *devPtr;
- unsigned char oldStat, newStat;
- int return_unchanged;
-
- if (z90crypt.len != sizeof(z90crypt))
- return ENOTINIT;
- if (z90crypt.terminating)
- return TSQ_FATAL_ERROR;
- rv = 0;
- if (!z90crypt.hdware_info->hdware_mask.st_count &&
- !z90crypt.domain_established) {
- rv = probe_crypto_domain(cdx_p);
- if (z90crypt.terminating)
- return TSQ_FATAL_ERROR;
- if (rv == Z90C_NO_DEVICES)
- return 0; // try later
- if (rv)
- return rv;
- z90crypt.cdx = *cdx_p;
- z90crypt.domain_established = 1;
- }
- rv = find_crypto_devices(&local_mask);
- if (rv) {
- PRINTK("find crypto devices returned %d\n", rv);
- return rv;
- }
- if (!memcmp(&local_mask, &z90crypt.hdware_info->hdware_mask,
- sizeof(struct status))) {
- return_unchanged = 1;
- for (i = 0; i < Z90CRYPT_NUM_TYPES; i++) {
- /**
- * Check for disabled cards. If any device is marked
- * disabled, destroy it.
- */
- for (j = 0;
- j < z90crypt.hdware_info->type_mask[i].st_count;
- j++) {
- indx = z90crypt.hdware_info->type_x_addr[i].
- device_index[j];
- devPtr = z90crypt.device_p[indx];
- if (devPtr && devPtr->disabled) {
- local_mask.st_mask[indx] = HD_NOT_THERE;
- return_unchanged = 0;
- }
- }
- }
- if (return_unchanged == 1)
- return 0;
- }
-
- spin_lock_irq(&queuespinlock);
- for (i = 0; i < z90crypt.max_count; i++) {
- oldStat = z90crypt.hdware_info->hdware_mask.st_mask[i];
- newStat = local_mask.st_mask[i];
- if ((oldStat == HD_ONLINE) && (newStat != HD_ONLINE))
- destroy_crypto_device(i);
- else if ((oldStat != HD_ONLINE) && (newStat == HD_ONLINE)) {
- rv = create_crypto_device(i);
- if (rv >= REC_FATAL_ERROR)
- return rv;
- if (rv != 0) {
- local_mask.st_mask[i] = HD_NOT_THERE;
- local_mask.st_count--;
- }
- }
- }
- memcpy(z90crypt.hdware_info->hdware_mask.st_mask, local_mask.st_mask,
- sizeof(local_mask.st_mask));
- z90crypt.hdware_info->hdware_mask.st_count = local_mask.st_count;
- z90crypt.hdware_info->hdware_mask.disabled_count =
- local_mask.disabled_count;
- refresh_index_array(&z90crypt.mask, &z90crypt.overall_device_x);
- for (i = 0; i < Z90CRYPT_NUM_TYPES; i++)
- refresh_index_array(&(z90crypt.hdware_info->type_mask[i]),
- &(z90crypt.hdware_info->type_x_addr[i]));
- spin_unlock_irq(&queuespinlock);
-
- return rv;
-}
-
-static int
-find_crypto_devices(struct status *deviceMask)
-{
- int i, q_depth, dev_type;
- enum hdstat hd_stat;
-
- deviceMask->st_count = 0;
- deviceMask->disabled_count = 0;
- deviceMask->user_disabled_count = 0;
-
- for (i = 0; i < z90crypt.max_count; i++) {
- hd_stat = query_online(i, z90crypt.cdx, MAX_RESET, &q_depth,
- &dev_type);
- if (hd_stat == HD_TSQ_EXCEPTION) {
- z90crypt.terminating = 1;
- PRINTKC("Exception during probe for crypto devices\n");
- return TSQ_FATAL_ERROR;
- }
- deviceMask->st_mask[i] = hd_stat;
- if (hd_stat == HD_ONLINE) {
- PDEBUG("Got an online crypto!: %d\n", i);
- PDEBUG("Got a queue depth of %d\n", q_depth);
- PDEBUG("Got a device type of %d\n", dev_type);
- if (q_depth <= 0)
- return TSQ_FATAL_ERROR;
- deviceMask->st_count++;
- z90crypt.q_depth_array[i] = q_depth;
- z90crypt.dev_type_array[i] = dev_type;
- }
- }
-
- return 0;
-}
-
-static int
-refresh_index_array(struct status *status_str, struct device_x *index_array)
-{
- int i, count;
- enum devstat stat;
-
- i = -1;
- count = 0;
- do {
- stat = status_str->st_mask[++i];
- if (stat == DEV_ONLINE)
- index_array->device_index[count++] = i;
- } while ((i < Z90CRYPT_NUM_DEVS) && (count < status_str->st_count));
-
- return count;
-}
-
-static int
-create_crypto_device(int index)
-{
- int rv, devstat, total_size;
- struct device *dev_ptr;
- struct status *type_str_p;
- int deviceType;
-
- dev_ptr = z90crypt.device_p[index];
- if (!dev_ptr) {
- total_size = sizeof(struct device) +
- z90crypt.q_depth_array[index] * sizeof(int);
-
- dev_ptr = kzalloc(total_size, GFP_ATOMIC);
- if (!dev_ptr) {
- PRINTK("kmalloc device %d failed\n", index);
- return ENOMEM;
- }
- dev_ptr->dev_resp_p = kmalloc(MAX_RESPONSE_SIZE, GFP_ATOMIC);
- if (!dev_ptr->dev_resp_p) {
- kfree(dev_ptr);
- PRINTK("kmalloc device %d rec buffer failed\n", index);
- return ENOMEM;
- }
- dev_ptr->dev_resp_l = MAX_RESPONSE_SIZE;
- INIT_LIST_HEAD(&(dev_ptr->dev_caller_list));
- }
-
- devstat = reset_device(index, z90crypt.cdx, MAX_RESET);
- if (devstat == DEV_RSQ_EXCEPTION) {
- PRINTK("exception during reset device %d\n", index);
- kfree(dev_ptr->dev_resp_p);
- kfree(dev_ptr);
- return RSQ_FATAL_ERROR;
- }
- if (devstat == DEV_ONLINE) {
- dev_ptr->dev_self_x = index;
- dev_ptr->dev_type = z90crypt.dev_type_array[index];
- if (dev_ptr->dev_type == NILDEV) {
- rv = probe_device_type(dev_ptr);
- if (rv) {
- PRINTK("rv = %d from probe_device_type %d\n",
- rv, index);
- kfree(dev_ptr->dev_resp_p);
- kfree(dev_ptr);
- return rv;
- }
- }
- if (dev_ptr->dev_type == PCIXCC_UNK) {
- rv = probe_PCIXCC_type(dev_ptr);
- if (rv) {
- PRINTK("rv = %d from probe_PCIXCC_type %d\n",
- rv, index);
- kfree(dev_ptr->dev_resp_p);
- kfree(dev_ptr);
- return rv;
- }
- }
- deviceType = dev_ptr->dev_type;
- z90crypt.dev_type_array[index] = deviceType;
- if (deviceType == PCICA)
- z90crypt.hdware_info->device_type_array[index] = 1;
- else if (deviceType == PCICC)
- z90crypt.hdware_info->device_type_array[index] = 2;
- else if (deviceType == PCIXCC_MCL2)
- z90crypt.hdware_info->device_type_array[index] = 3;
- else if (deviceType == PCIXCC_MCL3)
- z90crypt.hdware_info->device_type_array[index] = 4;
- else if (deviceType == CEX2C)
- z90crypt.hdware_info->device_type_array[index] = 5;
- else if (deviceType == CEX2A)
- z90crypt.hdware_info->device_type_array[index] = 6;
- else // No idea how this would happen.
- z90crypt.hdware_info->device_type_array[index] = -1;
- }
-
- /**
- * 'q_depth' returned by the hardware is one less than
- * the actual depth
- */
- dev_ptr->dev_q_depth = z90crypt.q_depth_array[index];
- dev_ptr->dev_type = z90crypt.dev_type_array[index];
- dev_ptr->dev_stat = devstat;
- dev_ptr->disabled = 0;
- z90crypt.device_p[index] = dev_ptr;
-
- if (devstat == DEV_ONLINE) {
- if (z90crypt.mask.st_mask[index] != DEV_ONLINE) {
- z90crypt.mask.st_mask[index] = DEV_ONLINE;
- z90crypt.mask.st_count++;
- }
- deviceType = dev_ptr->dev_type;
- type_str_p = &z90crypt.hdware_info->type_mask[deviceType];
- if (type_str_p->st_mask[index] != DEV_ONLINE) {
- type_str_p->st_mask[index] = DEV_ONLINE;
- type_str_p->st_count++;
- }
- }
-
- return 0;
-}
-
-static int
-destroy_crypto_device(int index)
-{
- struct device *dev_ptr;
- int t, disabledFlag;
-
- dev_ptr = z90crypt.device_p[index];
-
- /* remember device type; get rid of device struct */
- if (dev_ptr) {
- disabledFlag = dev_ptr->disabled;
- t = dev_ptr->dev_type;
- kfree(dev_ptr->dev_resp_p);
- kfree(dev_ptr);
- } else {
- disabledFlag = 0;
- t = -1;
- }
- z90crypt.device_p[index] = 0;
-
- /* if the type is valid, remove the device from the type_mask */
- if ((t != -1) && z90crypt.hdware_info->type_mask[t].st_mask[index]) {
- z90crypt.hdware_info->type_mask[t].st_mask[index] = 0x00;
- z90crypt.hdware_info->type_mask[t].st_count--;
- if (disabledFlag == 1)
- z90crypt.hdware_info->type_mask[t].disabled_count--;
- }
- if (z90crypt.mask.st_mask[index] != DEV_GONE) {
- z90crypt.mask.st_mask[index] = DEV_GONE;
- z90crypt.mask.st_count--;
- }
- z90crypt.hdware_info->device_type_array[index] = 0;
-
- return 0;
-}
-
-static void
-destroy_z90crypt(void)
-{
- int i;
-
- for (i = 0; i < z90crypt.max_count; i++)
- if (z90crypt.device_p[i])
- destroy_crypto_device(i);
- kfree(z90crypt.hdware_info);
- memset((void *)&z90crypt, 0, sizeof(z90crypt));
-}
-
-static unsigned char static_testmsg[384] = {
-0x00,0x00,0x00,0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x00,0x06,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x58,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x43,0x43,
-0x41,0x2d,0x41,0x50,0x50,0x4c,0x20,0x20,0x20,0x01,0x01,0x01,0x00,0x00,0x00,0x00,
-0x50,0x4b,0x00,0x00,0x00,0x00,0x01,0x1c,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x05,0xb8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x70,0x00,0x41,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x54,0x32,
-0x01,0x00,0xa0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0xb8,0x05,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x0a,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x49,0x43,0x53,0x46,
-0x20,0x20,0x20,0x20,0x50,0x4b,0x0a,0x00,0x50,0x4b,0x43,0x53,0x2d,0x31,0x2e,0x32,
-0x37,0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0x00,0x11,0x22,0x33,0x44,
-0x55,0x66,0x77,0x88,0x99,0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0x00,
-0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0x00,0x11,0x22,0x33,0x44,0x55,0x66,
-0x77,0x88,0x99,0x00,0x11,0x22,0x33,0x5d,0x00,0x5b,0x00,0x77,0x88,0x1e,0x00,0x00,
-0x57,0x00,0x00,0x00,0x00,0x04,0x00,0x00,0x4f,0x00,0x00,0x00,0x03,0x02,0x00,0x00,
-0x40,0x01,0x00,0x01,0xce,0x02,0x68,0x2d,0x5f,0xa9,0xde,0x0c,0xf6,0xd2,0x7b,0x58,
-0x4b,0xf9,0x28,0x68,0x3d,0xb4,0xf4,0xef,0x78,0xd5,0xbe,0x66,0x63,0x42,0xef,0xf8,
-0xfd,0xa4,0xf8,0xb0,0x8e,0x29,0xc2,0xc9,0x2e,0xd8,0x45,0xb8,0x53,0x8c,0x6f,0x4e,
-0x72,0x8f,0x6c,0x04,0x9c,0x88,0xfc,0x1e,0xc5,0x83,0x55,0x57,0xf7,0xdd,0xfd,0x4f,
-0x11,0x36,0x95,0x5d,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
-};
-
-static int
-probe_device_type(struct device *devPtr)
-{
- int rv, dv, i, index, length;
- unsigned char psmid[8];
- static unsigned char loc_testmsg[sizeof(static_testmsg)];
-
- index = devPtr->dev_self_x;
- rv = 0;
- do {
- memcpy(loc_testmsg, static_testmsg, sizeof(static_testmsg));
- length = sizeof(static_testmsg) - 24;
- /* the -24 allows for the header */
- dv = send_to_AP(index, z90crypt.cdx, length, loc_testmsg);
- if (dv) {
- PDEBUG("dv returned by send during probe: %d\n", dv);
- if (dv == DEV_SEN_EXCEPTION) {
- rv = SEN_FATAL_ERROR;
- PRINTKC("exception in send to AP %d\n", index);
- break;
- }
- PDEBUG("return value from send_to_AP: %d\n", rv);
- switch (dv) {
- case DEV_GONE:
- PDEBUG("dev %d not available\n", index);
- rv = SEN_NOT_AVAIL;
- break;
- case DEV_ONLINE:
- rv = 0;
- break;
- case DEV_EMPTY:
- rv = SEN_NOT_AVAIL;
- break;
- case DEV_NO_WORK:
- rv = SEN_FATAL_ERROR;
- break;
- case DEV_BAD_MESSAGE:
- rv = SEN_USER_ERROR;
- break;
- case DEV_QUEUE_FULL:
- rv = SEN_QUEUE_FULL;
- break;
- default:
- PRINTK("unknown dv=%d for dev %d\n", dv, index);
- rv = SEN_NOT_AVAIL;
- break;
- }
- }
-
- if (rv)
- break;
-
- for (i = 0; i < 6; i++) {
- mdelay(300);
- dv = receive_from_AP(index, z90crypt.cdx,
- devPtr->dev_resp_l,
- devPtr->dev_resp_p, psmid);
- PDEBUG("dv returned by DQ = %d\n", dv);
- if (dv == DEV_REC_EXCEPTION) {
- rv = REC_FATAL_ERROR;
- PRINTKC("exception in dequeue %d\n",
- index);
- break;
- }
- switch (dv) {
- case DEV_ONLINE:
- rv = 0;
- break;
- case DEV_EMPTY:
- rv = REC_EMPTY;
- break;
- case DEV_NO_WORK:
- rv = REC_NO_WORK;
- break;
- case DEV_BAD_MESSAGE:
- case DEV_GONE:
- default:
- rv = REC_NO_RESPONSE;
- break;
- }
- if ((rv != 0) && (rv != REC_NO_WORK))
- break;
- if (rv == 0)
- break;
- }
- if (rv)
- break;
- rv = (devPtr->dev_resp_p[0] == 0x00) &&
- (devPtr->dev_resp_p[1] == 0x86);
- if (rv)
- devPtr->dev_type = PCICC;
- else
- devPtr->dev_type = PCICA;
- rv = 0;
- } while (0);
- /* In a general error case, the card is not marked online */
- return rv;
-}
-
-static unsigned char MCL3_testmsg[] = {
-0x00,0x00,0x00,0x00,0xEE,0xEE,0xEE,0xEE,0xEE,0xEE,0xEE,0xEE,
-0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x43,0x41,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x00,0x00,0x00,0x01,0xC4,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x24,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xDC,0x02,0x00,0x00,0x00,0x54,0x32,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE8,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x24,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x0A,0x4D,0x52,0x50,0x20,0x20,0x20,0x20,0x20,
-0x00,0x42,0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,
-0x0E,0x0F,0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,
-0xEE,0xFF,0xFF,0xEE,0xDD,0xCC,0xBB,0xAA,0x99,0x88,0x77,0x66,0x55,0x44,0x33,0x22,
-0x11,0x00,0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF,0xFE,0xDC,0xBA,0x98,0x76,0x54,
-0x32,0x10,0x00,0x9A,0x00,0x98,0x00,0x00,0x1E,0x00,0x00,0x94,0x00,0x00,0x00,0x00,
-0x04,0x00,0x00,0x8C,0x00,0x00,0x00,0x40,0x02,0x00,0x00,0x40,0xBA,0xE8,0x23,0x3C,
-0x75,0xF3,0x91,0x61,0xD6,0x73,0x39,0xCF,0x7B,0x6D,0x8E,0x61,0x97,0x63,0x9E,0xD9,
-0x60,0x55,0xD6,0xC7,0xEF,0xF8,0x1E,0x63,0x95,0x17,0xCC,0x28,0x45,0x60,0x11,0xC5,
-0xC4,0x4E,0x66,0xC6,0xE6,0xC3,0xDE,0x8A,0x19,0x30,0xCF,0x0E,0xD7,0xAA,0xDB,0x01,
-0xD8,0x00,0xBB,0x8F,0x39,0x9F,0x64,0x28,0xF5,0x7A,0x77,0x49,0xCC,0x6B,0xA3,0x91,
-0x97,0x70,0xE7,0x60,0x1E,0x39,0xE1,0xE5,0x33,0xE1,0x15,0x63,0x69,0x08,0x80,0x4C,
-0x67,0xC4,0x41,0x8F,0x48,0xDF,0x26,0x98,0xF1,0xD5,0x8D,0x88,0xD9,0x6A,0xA4,0x96,
-0xC5,0x84,0xD9,0x30,0x49,0x67,0x7D,0x19,0xB1,0xB3,0x45,0x4D,0xB2,0x53,0x9A,0x47,
-0x3C,0x7C,0x55,0xBF,0xCC,0x85,0x00,0x36,0xF1,0x3D,0x93,0x53
-};
-
-static int
-probe_PCIXCC_type(struct device *devPtr)
-{
- int rv, dv, i, index, length;
- unsigned char psmid[8];
- static unsigned char loc_testmsg[548];
- struct CPRBX *cprbx_p;
-
- index = devPtr->dev_self_x;
- rv = 0;
- do {
- memcpy(loc_testmsg, MCL3_testmsg, sizeof(MCL3_testmsg));
- length = sizeof(MCL3_testmsg) - 0x0C;
- dv = send_to_AP(index, z90crypt.cdx, length, loc_testmsg);
- if (dv) {
- PDEBUG("dv returned = %d\n", dv);
- if (dv == DEV_SEN_EXCEPTION) {
- rv = SEN_FATAL_ERROR;
- PRINTKC("exception in send to AP %d\n", index);
- break;
- }
- PDEBUG("return value from send_to_AP: %d\n", rv);
- switch (dv) {
- case DEV_GONE:
- PDEBUG("dev %d not available\n", index);
- rv = SEN_NOT_AVAIL;
- break;
- case DEV_ONLINE:
- rv = 0;
- break;
- case DEV_EMPTY:
- rv = SEN_NOT_AVAIL;
- break;
- case DEV_NO_WORK:
- rv = SEN_FATAL_ERROR;
- break;
- case DEV_BAD_MESSAGE:
- rv = SEN_USER_ERROR;
- break;
- case DEV_QUEUE_FULL:
- rv = SEN_QUEUE_FULL;
- break;
- default:
- PRINTK("unknown dv=%d for dev %d\n", dv, index);
- rv = SEN_NOT_AVAIL;
- break;
- }
- }
-
- if (rv)
- break;
-
- for (i = 0; i < 6; i++) {
- mdelay(300);
- dv = receive_from_AP(index, z90crypt.cdx,
- devPtr->dev_resp_l,
- devPtr->dev_resp_p, psmid);
- PDEBUG("dv returned by DQ = %d\n", dv);
- if (dv == DEV_REC_EXCEPTION) {
- rv = REC_FATAL_ERROR;
- PRINTKC("exception in dequeue %d\n",
- index);
- break;
- }
- switch (dv) {
- case DEV_ONLINE:
- rv = 0;
- break;
- case DEV_EMPTY:
- rv = REC_EMPTY;
- break;
- case DEV_NO_WORK:
- rv = REC_NO_WORK;
- break;
- case DEV_BAD_MESSAGE:
- case DEV_GONE:
- default:
- rv = REC_NO_RESPONSE;
- break;
- }
- if ((rv != 0) && (rv != REC_NO_WORK))
- break;
- if (rv == 0)
- break;
- }
- if (rv)
- break;
- cprbx_p = (struct CPRBX *) (devPtr->dev_resp_p + 48);
- if ((cprbx_p->ccp_rtcode == 8) && (cprbx_p->ccp_rscode == 33)) {
- devPtr->dev_type = PCIXCC_MCL2;
- PDEBUG("device %d is MCL2\n", index);
- } else {
- devPtr->dev_type = PCIXCC_MCL3;
- PDEBUG("device %d is MCL3\n", index);
- }
- } while (0);
- /* In a general error case, the card is not marked online */
- return rv;
-}
-
-module_init(z90crypt_init_module);
-module_exit(z90crypt_cleanup_module);
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_api.c
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ * Cornelia Huck <cornelia.huck@de.ibm.com>
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ * Ralph Wuerthner <rwuerthn@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/miscdevice.h>
+#include <linux/fs.h>
+#include <linux/proc_fs.h>
+#include <linux/compat.h>
+#include <asm/atomic.h>
+#include <asm/uaccess.h>
+
+#include "zcrypt_api.h"
+
+/**
+ * Module description.
+ */
+MODULE_AUTHOR("IBM Corporation");
+MODULE_DESCRIPTION("Cryptographic Coprocessor interface, "
+ "Copyright 2001, 2006 IBM Corporation");
+MODULE_LICENSE("GPL");
+
+static DEFINE_SPINLOCK(zcrypt_device_lock);
+static LIST_HEAD(zcrypt_device_list);
+static int zcrypt_device_count = 0;
+static atomic_t zcrypt_open_count = ATOMIC_INIT(0);
+
+/**
+ * Device attributes common for all crypto devices.
+ */
+static ssize_t zcrypt_type_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct zcrypt_device *zdev = to_ap_dev(dev)->private;
+ return snprintf(buf, PAGE_SIZE, "%s\n", zdev->type_string);
+}
+
+static DEVICE_ATTR(type, 0444, zcrypt_type_show, NULL);
+
+static ssize_t zcrypt_online_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct zcrypt_device *zdev = to_ap_dev(dev)->private;
+ return snprintf(buf, PAGE_SIZE, "%d\n", zdev->online);
+}
+
+static ssize_t zcrypt_online_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct zcrypt_device *zdev = to_ap_dev(dev)->private;
+ int online;
+
+ if (sscanf(buf, "%d\n", &online) != 1 || online < 0 || online > 1)
+ return -EINVAL;
+ zdev->online = online;
+ if (!online)
+ ap_flush_queue(zdev->ap_dev);
+ return count;
+}
+
+static DEVICE_ATTR(online, 0644, zcrypt_online_show, zcrypt_online_store);
+
+static struct attribute * zcrypt_device_attrs[] = {
+ &dev_attr_type.attr,
+ &dev_attr_online.attr,
+ NULL,
+};
+
+static struct attribute_group zcrypt_device_attr_group = {
+ .attrs = zcrypt_device_attrs,
+};
+
+/**
+ * Move the device towards the head of the device list.
+ * Need to be called while holding the zcrypt device list lock.
+ * Note: cards with speed_rating of 0 are kept at the end of the list.
+ */
+static void __zcrypt_increase_preference(struct zcrypt_device *zdev)
+{
+ struct zcrypt_device *tmp;
+ struct list_head *l;
+
+ if (zdev->speed_rating == 0)
+ return;
+ for (l = zdev->list.prev; l != &zcrypt_device_list; l = l->prev) {
+ tmp = list_entry(l, struct zcrypt_device, list);
+ if ((tmp->request_count + 1) * tmp->speed_rating <=
+ (zdev->request_count + 1) * zdev->speed_rating &&
+ tmp->speed_rating != 0)
+ break;
+ }
+ if (l == zdev->list.prev)
+ return;
+ /* Move zdev behind l */
+ list_del(&zdev->list);
+ list_add(&zdev->list, l);
+}
+
+/**
+ * Move the device towards the tail of the device list.
+ * Need to be called while holding the zcrypt device list lock.
+ * Note: cards with speed_rating of 0 are kept at the end of the list.
+ */
+static void __zcrypt_decrease_preference(struct zcrypt_device *zdev)
+{
+ struct zcrypt_device *tmp;
+ struct list_head *l;
+
+ if (zdev->speed_rating == 0)
+ return;
+ for (l = zdev->list.next; l != &zcrypt_device_list; l = l->next) {
+ tmp = list_entry(l, struct zcrypt_device, list);
+ if ((tmp->request_count + 1) * tmp->speed_rating >
+ (zdev->request_count + 1) * zdev->speed_rating ||
+ tmp->speed_rating == 0)
+ break;
+ }
+ if (l == zdev->list.next)
+ return;
+ /* Move zdev before l */
+ list_del(&zdev->list);
+ list_add_tail(&zdev->list, l);
+}
+
+static void zcrypt_device_release(struct kref *kref)
+{
+ struct zcrypt_device *zdev =
+ container_of(kref, struct zcrypt_device, refcount);
+ zcrypt_device_free(zdev);
+}
+
+void zcrypt_device_get(struct zcrypt_device *zdev)
+{
+ kref_get(&zdev->refcount);
+}
+EXPORT_SYMBOL(zcrypt_device_get);
+
+int zcrypt_device_put(struct zcrypt_device *zdev)
+{
+ return kref_put(&zdev->refcount, zcrypt_device_release);
+}
+EXPORT_SYMBOL(zcrypt_device_put);
+
+struct zcrypt_device *zcrypt_device_alloc(size_t max_response_size)
+{
+ struct zcrypt_device *zdev;
+
+ zdev = kzalloc(sizeof(struct zcrypt_device), GFP_KERNEL);
+ if (!zdev)
+ return NULL;
+ zdev->reply.message = kmalloc(max_response_size, GFP_KERNEL);
+ if (!zdev->reply.message)
+ goto out_free;
+ zdev->reply.length = max_response_size;
+ spin_lock_init(&zdev->lock);
+ INIT_LIST_HEAD(&zdev->list);
+ return zdev;
+
+out_free:
+ kfree(zdev);
+ return NULL;
+}
+EXPORT_SYMBOL(zcrypt_device_alloc);
+
+void zcrypt_device_free(struct zcrypt_device *zdev)
+{
+ kfree(zdev->reply.message);
+ kfree(zdev);
+}
+EXPORT_SYMBOL(zcrypt_device_free);
+
+/**
+ * Register a crypto device.
+ */
+int zcrypt_device_register(struct zcrypt_device *zdev)
+{
+ int rc;
+
+ rc = sysfs_create_group(&zdev->ap_dev->device.kobj,
+ &zcrypt_device_attr_group);
+ if (rc)
+ goto out;
+ get_device(&zdev->ap_dev->device);
+ kref_init(&zdev->refcount);
+ spin_lock_bh(&zcrypt_device_lock);
+ zdev->online = 1; /* New devices are online by default. */
+ list_add_tail(&zdev->list, &zcrypt_device_list);
+ __zcrypt_increase_preference(zdev);
+ zcrypt_device_count++;
+ spin_unlock_bh(&zcrypt_device_lock);
+out:
+ return rc;
+}
+EXPORT_SYMBOL(zcrypt_device_register);
+
+/**
+ * Unregister a crypto device.
+ */
+void zcrypt_device_unregister(struct zcrypt_device *zdev)
+{
+ spin_lock_bh(&zcrypt_device_lock);
+ zcrypt_device_count--;
+ list_del_init(&zdev->list);
+ spin_unlock_bh(&zcrypt_device_lock);
+ sysfs_remove_group(&zdev->ap_dev->device.kobj,
+ &zcrypt_device_attr_group);
+ put_device(&zdev->ap_dev->device);
+ zcrypt_device_put(zdev);
+}
+EXPORT_SYMBOL(zcrypt_device_unregister);
+
+/**
+ * zcrypt_read is not be supported beyond zcrypt 1.3.1
+ */
+static ssize_t zcrypt_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *f_pos)
+{
+ return -EPERM;
+}
+
+/**
+ * Write is is not allowed
+ */
+static ssize_t zcrypt_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *f_pos)
+{
+ return -EPERM;
+}
+
+/**
+ * Device open/close functions to count number of users.
+ */
+static int zcrypt_open(struct inode *inode, struct file *filp)
+{
+ atomic_inc(&zcrypt_open_count);
+ return 0;
+}
+
+static int zcrypt_release(struct inode *inode, struct file *filp)
+{
+ atomic_dec(&zcrypt_open_count);
+ return 0;
+}
+
+/**
+ * zcrypt ioctls.
+ */
+static long zcrypt_rsa_modexpo(struct ica_rsa_modexpo *mex)
+{
+ struct zcrypt_device *zdev;
+ int rc;
+
+ if (mex->outputdatalength < mex->inputdatalength)
+ return -EINVAL;
+ /**
+ * As long as outputdatalength is big enough, we can set the
+ * outputdatalength equal to the inputdatalength, since that is the
+ * number of bytes we will copy in any case
+ */
+ mex->outputdatalength = mex->inputdatalength;
+
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list) {
+ if (!zdev->online ||
+ !zdev->ops->rsa_modexpo ||
+ zdev->min_mod_size > mex->inputdatalength ||
+ zdev->max_mod_size < mex->inputdatalength)
+ continue;
+ zcrypt_device_get(zdev);
+ get_device(&zdev->ap_dev->device);
+ zdev->request_count++;
+ __zcrypt_decrease_preference(zdev);
+ spin_unlock_bh(&zcrypt_device_lock);
+ if (try_module_get(zdev->ap_dev->drv->driver.owner)) {
+ rc = zdev->ops->rsa_modexpo(zdev, mex);
+ module_put(zdev->ap_dev->drv->driver.owner);
+ }
+ else
+ rc = -EAGAIN;
+ spin_lock_bh(&zcrypt_device_lock);
+ zdev->request_count--;
+ __zcrypt_increase_preference(zdev);
+ put_device(&zdev->ap_dev->device);
+ zcrypt_device_put(zdev);
+ spin_unlock_bh(&zcrypt_device_lock);
+ return rc;
+ }
+ spin_unlock_bh(&zcrypt_device_lock);
+ return -ENODEV;
+}
+
+static long zcrypt_rsa_crt(struct ica_rsa_modexpo_crt *crt)
+{
+ struct zcrypt_device *zdev;
+ unsigned long long z1, z2, z3;
+ int rc, copied;
+
+ if (crt->outputdatalength < crt->inputdatalength ||
+ (crt->inputdatalength & 1))
+ return -EINVAL;
+ /**
+ * As long as outputdatalength is big enough, we can set the
+ * outputdatalength equal to the inputdatalength, since that is the
+ * number of bytes we will copy in any case
+ */
+ crt->outputdatalength = crt->inputdatalength;
+
+ copied = 0;
+ restart:
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list) {
+ if (!zdev->online ||
+ !zdev->ops->rsa_modexpo_crt ||
+ zdev->min_mod_size > crt->inputdatalength ||
+ zdev->max_mod_size < crt->inputdatalength)
+ continue;
+ if (zdev->short_crt && crt->inputdatalength > 240) {
+ /**
+ * Check inputdata for leading zeros for cards
+ * that can't handle np_prime, bp_key, or
+ * u_mult_inv > 128 bytes.
+ */
+ if (copied == 0) {
+ int len;
+ spin_unlock_bh(&zcrypt_device_lock);
+ /* len is max 256 / 2 - 120 = 8 */
+ len = crt->inputdatalength / 2 - 120;
+ z1 = z2 = z3 = 0;
+ if (copy_from_user(&z1, crt->np_prime, len) ||
+ copy_from_user(&z2, crt->bp_key, len) ||
+ copy_from_user(&z3, crt->u_mult_inv, len))
+ return -EFAULT;
+ copied = 1;
+ /**
+ * We have to restart device lookup -
+ * the device list may have changed by now.
+ */
+ goto restart;
+ }
+ if (z1 != 0ULL || z2 != 0ULL || z3 != 0ULL)
+ /* The device can't handle this request. */
+ continue;
+ }
+ zcrypt_device_get(zdev);
+ get_device(&zdev->ap_dev->device);
+ zdev->request_count++;
+ __zcrypt_decrease_preference(zdev);
+ spin_unlock_bh(&zcrypt_device_lock);
+ if (try_module_get(zdev->ap_dev->drv->driver.owner)) {
+ rc = zdev->ops->rsa_modexpo_crt(zdev, crt);
+ module_put(zdev->ap_dev->drv->driver.owner);
+ }
+ else
+ rc = -EAGAIN;
+ spin_lock_bh(&zcrypt_device_lock);
+ zdev->request_count--;
+ __zcrypt_increase_preference(zdev);
+ put_device(&zdev->ap_dev->device);
+ zcrypt_device_put(zdev);
+ spin_unlock_bh(&zcrypt_device_lock);
+ return rc;
+ }
+ spin_unlock_bh(&zcrypt_device_lock);
+ return -ENODEV;
+}
+
+static long zcrypt_send_cprb(struct ica_xcRB *xcRB)
+{
+ struct zcrypt_device *zdev;
+ int rc;
+
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list) {
+ if (!zdev->online || !zdev->ops->send_cprb ||
+ (xcRB->user_defined != AUTOSELECT &&
+ AP_QID_DEVICE(zdev->ap_dev->qid) != xcRB->user_defined)
+ )
+ continue;
+ zcrypt_device_get(zdev);
+ get_device(&zdev->ap_dev->device);
+ zdev->request_count++;
+ __zcrypt_decrease_preference(zdev);
+ spin_unlock_bh(&zcrypt_device_lock);
+ if (try_module_get(zdev->ap_dev->drv->driver.owner)) {
+ rc = zdev->ops->send_cprb(zdev, xcRB);
+ module_put(zdev->ap_dev->drv->driver.owner);
+ }
+ else
+ rc = -EAGAIN;
+ spin_lock_bh(&zcrypt_device_lock);
+ zdev->request_count--;
+ __zcrypt_increase_preference(zdev);
+ put_device(&zdev->ap_dev->device);
+ zcrypt_device_put(zdev);
+ spin_unlock_bh(&zcrypt_device_lock);
+ return rc;
+ }
+ spin_unlock_bh(&zcrypt_device_lock);
+ return -ENODEV;
+}
+
+static void zcrypt_status_mask(char status[AP_DEVICES])
+{
+ struct zcrypt_device *zdev;
+
+ memset(status, 0, sizeof(char) * AP_DEVICES);
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list)
+ status[AP_QID_DEVICE(zdev->ap_dev->qid)] =
+ zdev->online ? zdev->user_space_type : 0x0d;
+ spin_unlock_bh(&zcrypt_device_lock);
+}
+
+static void zcrypt_qdepth_mask(char qdepth[AP_DEVICES])
+{
+ struct zcrypt_device *zdev;
+
+ memset(qdepth, 0, sizeof(char) * AP_DEVICES);
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list) {
+ spin_lock(&zdev->ap_dev->lock);
+ qdepth[AP_QID_DEVICE(zdev->ap_dev->qid)] =
+ zdev->ap_dev->pendingq_count +
+ zdev->ap_dev->requestq_count;
+ spin_unlock(&zdev->ap_dev->lock);
+ }
+ spin_unlock_bh(&zcrypt_device_lock);
+}
+
+static void zcrypt_perdev_reqcnt(int reqcnt[AP_DEVICES])
+{
+ struct zcrypt_device *zdev;
+
+ memset(reqcnt, 0, sizeof(int) * AP_DEVICES);
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list) {
+ spin_lock(&zdev->ap_dev->lock);
+ reqcnt[AP_QID_DEVICE(zdev->ap_dev->qid)] =
+ zdev->ap_dev->total_request_count;
+ spin_unlock(&zdev->ap_dev->lock);
+ }
+ spin_unlock_bh(&zcrypt_device_lock);
+}
+
+static int zcrypt_pendingq_count(void)
+{
+ struct zcrypt_device *zdev;
+ int pendingq_count = 0;
+
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list) {
+ spin_lock(&zdev->ap_dev->lock);
+ pendingq_count += zdev->ap_dev->pendingq_count;
+ spin_unlock(&zdev->ap_dev->lock);
+ }
+ spin_unlock_bh(&zcrypt_device_lock);
+ return pendingq_count;
+}
+
+static int zcrypt_requestq_count(void)
+{
+ struct zcrypt_device *zdev;
+ int requestq_count = 0;
+
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list) {
+ spin_lock(&zdev->ap_dev->lock);
+ requestq_count += zdev->ap_dev->requestq_count;
+ spin_unlock(&zdev->ap_dev->lock);
+ }
+ spin_unlock_bh(&zcrypt_device_lock);
+ return requestq_count;
+}
+
+static int zcrypt_count_type(int type)
+{
+ struct zcrypt_device *zdev;
+ int device_count = 0;
+
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list)
+ if (zdev->user_space_type == type)
+ device_count++;
+ spin_unlock_bh(&zcrypt_device_lock);
+ return device_count;
+}
+
+/**
+ * Old, deprecated combi status call.
+ */
+static long zcrypt_ica_status(struct file *filp, unsigned long arg)
+{
+ struct ica_z90_status *pstat;
+ int ret;
+
+ pstat = kzalloc(sizeof(*pstat), GFP_KERNEL);
+ if (!pstat)
+ return -ENOMEM;
+ pstat->totalcount = zcrypt_device_count;
+ pstat->leedslitecount = zcrypt_count_type(ZCRYPT_PCICA);
+ pstat->leeds2count = zcrypt_count_type(ZCRYPT_PCICC);
+ pstat->requestqWaitCount = zcrypt_requestq_count();
+ pstat->pendingqWaitCount = zcrypt_pendingq_count();
+ pstat->totalOpenCount = atomic_read(&zcrypt_open_count);
+ pstat->cryptoDomain = ap_domain_index;
+ zcrypt_status_mask(pstat->status);
+ zcrypt_qdepth_mask(pstat->qdepth);
+ ret = 0;
+ if (copy_to_user((void __user *) arg, pstat, sizeof(*pstat)))
+ ret = -EFAULT;
+ kfree(pstat);
+ return ret;
+}
+
+static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ int rc;
+
+ switch (cmd) {
+ case ICARSAMODEXPO: {
+ struct ica_rsa_modexpo __user *umex = (void __user *) arg;
+ struct ica_rsa_modexpo mex;
+ if (copy_from_user(&mex, umex, sizeof(mex)))
+ return -EFAULT;
+ do {
+ rc = zcrypt_rsa_modexpo(&mex);
+ } while (rc == -EAGAIN);
+ if (rc)
+ return rc;
+ return put_user(mex.outputdatalength, &umex->outputdatalength);
+ }
+ case ICARSACRT: {
+ struct ica_rsa_modexpo_crt __user *ucrt = (void __user *) arg;
+ struct ica_rsa_modexpo_crt crt;
+ if (copy_from_user(&crt, ucrt, sizeof(crt)))
+ return -EFAULT;
+ do {
+ rc = zcrypt_rsa_crt(&crt);
+ } while (rc == -EAGAIN);
+ if (rc)
+ return rc;
+ return put_user(crt.outputdatalength, &ucrt->outputdatalength);
+ }
+ case ZSECSENDCPRB: {
+ struct ica_xcRB __user *uxcRB = (void __user *) arg;
+ struct ica_xcRB xcRB;
+ if (copy_from_user(&xcRB, uxcRB, sizeof(xcRB)))
+ return -EFAULT;
+ do {
+ rc = zcrypt_send_cprb(&xcRB);
+ } while (rc == -EAGAIN);
+ if (copy_to_user(uxcRB, &xcRB, sizeof(xcRB)))
+ return -EFAULT;
+ return rc;
+ }
+ case Z90STAT_STATUS_MASK: {
+ char status[AP_DEVICES];
+ zcrypt_status_mask(status);
+ if (copy_to_user((char __user *) arg, status,
+ sizeof(char) * AP_DEVICES))
+ return -EFAULT;
+ return 0;
+ }
+ case Z90STAT_QDEPTH_MASK: {
+ char qdepth[AP_DEVICES];
+ zcrypt_qdepth_mask(qdepth);
+ if (copy_to_user((char __user *) arg, qdepth,
+ sizeof(char) * AP_DEVICES))
+ return -EFAULT;
+ return 0;
+ }
+ case Z90STAT_PERDEV_REQCNT: {
+ int reqcnt[AP_DEVICES];
+ zcrypt_perdev_reqcnt(reqcnt);
+ if (copy_to_user((int __user *) arg, reqcnt,
+ sizeof(int) * AP_DEVICES))
+ return -EFAULT;
+ return 0;
+ }
+ case Z90STAT_REQUESTQ_COUNT:
+ return put_user(zcrypt_requestq_count(), (int __user *) arg);
+ case Z90STAT_PENDINGQ_COUNT:
+ return put_user(zcrypt_pendingq_count(), (int __user *) arg);
+ case Z90STAT_TOTALOPEN_COUNT:
+ return put_user(atomic_read(&zcrypt_open_count),
+ (int __user *) arg);
+ case Z90STAT_DOMAIN_INDEX:
+ return put_user(ap_domain_index, (int __user *) arg);
+ /**
+ * Deprecated ioctls. Don't add another device count ioctl,
+ * you can count them yourself in the user space with the
+ * output of the Z90STAT_STATUS_MASK ioctl.
+ */
+ case ICAZ90STATUS:
+ return zcrypt_ica_status(filp, arg);
+ case Z90STAT_TOTALCOUNT:
+ return put_user(zcrypt_device_count, (int __user *) arg);
+ case Z90STAT_PCICACOUNT:
+ return put_user(zcrypt_count_type(ZCRYPT_PCICA),
+ (int __user *) arg);
+ case Z90STAT_PCICCCOUNT:
+ return put_user(zcrypt_count_type(ZCRYPT_PCICC),
+ (int __user *) arg);
+ case Z90STAT_PCIXCCMCL2COUNT:
+ return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL2),
+ (int __user *) arg);
+ case Z90STAT_PCIXCCMCL3COUNT:
+ return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL3),
+ (int __user *) arg);
+ case Z90STAT_PCIXCCCOUNT:
+ return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL2) +
+ zcrypt_count_type(ZCRYPT_PCIXCC_MCL3),
+ (int __user *) arg);
+ case Z90STAT_CEX2CCOUNT:
+ return put_user(zcrypt_count_type(ZCRYPT_CEX2C),
+ (int __user *) arg);
+ case Z90STAT_CEX2ACOUNT:
+ return put_user(zcrypt_count_type(ZCRYPT_CEX2A),
+ (int __user *) arg);
+ default:
+ /* unknown ioctl number */
+ return -ENOIOCTLCMD;
+ }
+}
+
+#ifdef CONFIG_COMPAT
+/**
+ * ioctl32 conversion routines
+ */
+struct compat_ica_rsa_modexpo {
+ compat_uptr_t inputdata;
+ unsigned int inputdatalength;
+ compat_uptr_t outputdata;
+ unsigned int outputdatalength;
+ compat_uptr_t b_key;
+ compat_uptr_t n_modulus;
+};
+
+static long trans_modexpo32(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ struct compat_ica_rsa_modexpo __user *umex32 = compat_ptr(arg);
+ struct compat_ica_rsa_modexpo mex32;
+ struct ica_rsa_modexpo mex64;
+ long rc;
+
+ if (copy_from_user(&mex32, umex32, sizeof(mex32)))
+ return -EFAULT;
+ mex64.inputdata = compat_ptr(mex32.inputdata);
+ mex64.inputdatalength = mex32.inputdatalength;
+ mex64.outputdata = compat_ptr(mex32.outputdata);
+ mex64.outputdatalength = mex32.outputdatalength;
+ mex64.b_key = compat_ptr(mex32.b_key);
+ mex64.n_modulus = compat_ptr(mex32.n_modulus);
+ do {
+ rc = zcrypt_rsa_modexpo(&mex64);
+ } while (rc == -EAGAIN);
+ if (!rc)
+ rc = put_user(mex64.outputdatalength,
+ &umex32->outputdatalength);
+ return rc;
+}
+
+struct compat_ica_rsa_modexpo_crt {
+ compat_uptr_t inputdata;
+ unsigned int inputdatalength;
+ compat_uptr_t outputdata;
+ unsigned int outputdatalength;
+ compat_uptr_t bp_key;
+ compat_uptr_t bq_key;
+ compat_uptr_t np_prime;
+ compat_uptr_t nq_prime;
+ compat_uptr_t u_mult_inv;
+};
+
+static long trans_modexpo_crt32(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ struct compat_ica_rsa_modexpo_crt __user *ucrt32 = compat_ptr(arg);
+ struct compat_ica_rsa_modexpo_crt crt32;
+ struct ica_rsa_modexpo_crt crt64;
+ long rc;
+
+ if (copy_from_user(&crt32, ucrt32, sizeof(crt32)))
+ return -EFAULT;
+ crt64.inputdata = compat_ptr(crt32.inputdata);
+ crt64.inputdatalength = crt32.inputdatalength;
+ crt64.outputdata= compat_ptr(crt32.outputdata);
+ crt64.outputdatalength = crt32.outputdatalength;
+ crt64.bp_key = compat_ptr(crt32.bp_key);
+ crt64.bq_key = compat_ptr(crt32.bq_key);
+ crt64.np_prime = compat_ptr(crt32.np_prime);
+ crt64.nq_prime = compat_ptr(crt32.nq_prime);
+ crt64.u_mult_inv = compat_ptr(crt32.u_mult_inv);
+ do {
+ rc = zcrypt_rsa_crt(&crt64);
+ } while (rc == -EAGAIN);
+ if (!rc)
+ rc = put_user(crt64.outputdatalength,
+ &ucrt32->outputdatalength);
+ return rc;
+}
+
+struct compat_ica_xcRB {
+ unsigned short agent_ID;
+ unsigned int user_defined;
+ unsigned short request_ID;
+ unsigned int request_control_blk_length;
+ unsigned char padding1[16 - sizeof (compat_uptr_t)];
+ compat_uptr_t request_control_blk_addr;
+ unsigned int request_data_length;
+ char padding2[16 - sizeof (compat_uptr_t)];
+ compat_uptr_t request_data_address;
+ unsigned int reply_control_blk_length;
+ char padding3[16 - sizeof (compat_uptr_t)];
+ compat_uptr_t reply_control_blk_addr;
+ unsigned int reply_data_length;
+ char padding4[16 - sizeof (compat_uptr_t)];
+ compat_uptr_t reply_data_addr;
+ unsigned short priority_window;
+ unsigned int status;
+} __attribute__((packed));
+
+static long trans_xcRB32(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ struct compat_ica_xcRB __user *uxcRB32 = compat_ptr(arg);
+ struct compat_ica_xcRB xcRB32;
+ struct ica_xcRB xcRB64;
+ long rc;
+
+ if (copy_from_user(&xcRB32, uxcRB32, sizeof(xcRB32)))
+ return -EFAULT;
+ xcRB64.agent_ID = xcRB32.agent_ID;
+ xcRB64.user_defined = xcRB32.user_defined;
+ xcRB64.request_ID = xcRB32.request_ID;
+ xcRB64.request_control_blk_length =
+ xcRB32.request_control_blk_length;
+ xcRB64.request_control_blk_addr =
+ compat_ptr(xcRB32.request_control_blk_addr);
+ xcRB64.request_data_length =
+ xcRB32.request_data_length;
+ xcRB64.request_data_address =
+ compat_ptr(xcRB32.request_data_address);
+ xcRB64.reply_control_blk_length =
+ xcRB32.reply_control_blk_length;
+ xcRB64.reply_control_blk_addr =
+ compat_ptr(xcRB32.reply_control_blk_addr);
+ xcRB64.reply_data_length = xcRB32.reply_data_length;
+ xcRB64.reply_data_addr =
+ compat_ptr(xcRB32.reply_data_addr);
+ xcRB64.priority_window = xcRB32.priority_window;
+ xcRB64.status = xcRB32.status;
+ do {
+ rc = zcrypt_send_cprb(&xcRB64);
+ } while (rc == -EAGAIN);
+ xcRB32.reply_control_blk_length = xcRB64.reply_control_blk_length;
+ xcRB32.reply_data_length = xcRB64.reply_data_length;
+ xcRB32.status = xcRB64.status;
+ if (copy_to_user(uxcRB32, &xcRB32, sizeof(xcRB32)))
+ return -EFAULT;
+ return rc;
+}
+
+long zcrypt_compat_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ if (cmd == ICARSAMODEXPO)
+ return trans_modexpo32(filp, cmd, arg);
+ if (cmd == ICARSACRT)
+ return trans_modexpo_crt32(filp, cmd, arg);
+ if (cmd == ZSECSENDCPRB)
+ return trans_xcRB32(filp, cmd, arg);
+ return zcrypt_unlocked_ioctl(filp, cmd, arg);
+}
+#endif
+
+/**
+ * Misc device file operations.
+ */
+static struct file_operations zcrypt_fops = {
+ .owner = THIS_MODULE,
+ .read = zcrypt_read,
+ .write = zcrypt_write,
+ .unlocked_ioctl = zcrypt_unlocked_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = zcrypt_compat_ioctl,
+#endif
+ .open = zcrypt_open,
+ .release = zcrypt_release
+};
+
+/**
+ * Misc device.
+ */
+static struct miscdevice zcrypt_misc_device = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "z90crypt",
+ .fops = &zcrypt_fops,
+};
+
+/**
+ * Deprecated /proc entry support.
+ */
+static struct proc_dir_entry *zcrypt_entry;
+
+static inline int sprintcl(unsigned char *outaddr, unsigned char *addr,
+ unsigned int len)
+{
+ int hl, i;
+
+ hl = 0;
+ for (i = 0; i < len; i++)
+ hl += sprintf(outaddr+hl, "%01x", (unsigned int) addr[i]);
+ hl += sprintf(outaddr+hl, " ");
+ return hl;
+}
+
+static inline int sprintrw(unsigned char *outaddr, unsigned char *addr,
+ unsigned int len)
+{
+ int hl, inl, c, cx;
+
+ hl = sprintf(outaddr, " ");
+ inl = 0;
+ for (c = 0; c < (len / 16); c++) {
+ hl += sprintcl(outaddr+hl, addr+inl, 16);
+ inl += 16;
+ }
+ cx = len%16;
+ if (cx) {
+ hl += sprintcl(outaddr+hl, addr+inl, cx);
+ inl += cx;
+ }
+ hl += sprintf(outaddr+hl, "\n");
+ return hl;
+}
+
+static inline int sprinthx(unsigned char *title, unsigned char *outaddr,
+ unsigned char *addr, unsigned int len)
+{
+ int hl, inl, r, rx;
+
+ hl = sprintf(outaddr, "\n%s\n", title);
+ inl = 0;
+ for (r = 0; r < (len / 64); r++) {
+ hl += sprintrw(outaddr+hl, addr+inl, 64);
+ inl += 64;
+ }
+ rx = len % 64;
+ if (rx) {
+ hl += sprintrw(outaddr+hl, addr+inl, rx);
+ inl += rx;
+ }
+ hl += sprintf(outaddr+hl, "\n");
+ return hl;
+}
+
+static inline int sprinthx4(unsigned char *title, unsigned char *outaddr,
+ unsigned int *array, unsigned int len)
+{
+ int hl, r;
+
+ hl = sprintf(outaddr, "\n%s\n", title);
+ for (r = 0; r < len; r++) {
+ if ((r % 8) == 0)
+ hl += sprintf(outaddr+hl, " ");
+ hl += sprintf(outaddr+hl, "%08X ", array[r]);
+ if ((r % 8) == 7)
+ hl += sprintf(outaddr+hl, "\n");
+ }
+ hl += sprintf(outaddr+hl, "\n");
+ return hl;
+}
+
+static int zcrypt_status_read(char *resp_buff, char **start, off_t offset,
+ int count, int *eof, void *data)
+{
+ unsigned char *workarea;
+ int len;
+
+ len = 0;
+
+ /* resp_buff is a page. Use the right half for a work area */
+ workarea = resp_buff + 2000;
+ len += sprintf(resp_buff + len, "\nzcrypt version: %d.%d.%d\n",
+ ZCRYPT_VERSION, ZCRYPT_RELEASE, ZCRYPT_VARIANT);
+ len += sprintf(resp_buff + len, "Cryptographic domain: %d\n",
+ ap_domain_index);
+ len += sprintf(resp_buff + len, "Total device count: %d\n",
+ zcrypt_device_count);
+ len += sprintf(resp_buff + len, "PCICA count: %d\n",
+ zcrypt_count_type(ZCRYPT_PCICA));
+ len += sprintf(resp_buff + len, "PCICC count: %d\n",
+ zcrypt_count_type(ZCRYPT_PCICC));
+ len += sprintf(resp_buff + len, "PCIXCC MCL2 count: %d\n",
+ zcrypt_count_type(ZCRYPT_PCIXCC_MCL2));
+ len += sprintf(resp_buff + len, "PCIXCC MCL3 count: %d\n",
+ zcrypt_count_type(ZCRYPT_PCIXCC_MCL3));
+ len += sprintf(resp_buff + len, "CEX2C count: %d\n",
+ zcrypt_count_type(ZCRYPT_CEX2C));
+ len += sprintf(resp_buff + len, "CEX2A count: %d\n",
+ zcrypt_count_type(ZCRYPT_CEX2A));
+ len += sprintf(resp_buff + len, "requestq count: %d\n",
+ zcrypt_requestq_count());
+ len += sprintf(resp_buff + len, "pendingq count: %d\n",
+ zcrypt_pendingq_count());
+ len += sprintf(resp_buff + len, "Total open handles: %d\n\n",
+ atomic_read(&zcrypt_open_count));
+ zcrypt_status_mask(workarea);
+ len += sprinthx("Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) "
+ "4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A",
+ resp_buff+len, workarea, AP_DEVICES);
+ zcrypt_qdepth_mask(workarea);
+ len += sprinthx("Waiting work element counts",
+ resp_buff+len, workarea, AP_DEVICES);
+ zcrypt_perdev_reqcnt((unsigned int *) workarea);
+ len += sprinthx4("Per-device successfully completed request counts",
+ resp_buff+len,(unsigned int *) workarea, AP_DEVICES);
+ *eof = 1;
+ memset((void *) workarea, 0x00, AP_DEVICES * sizeof(unsigned int));
+ return len;
+}
+
+static void zcrypt_disable_card(int index)
+{
+ struct zcrypt_device *zdev;
+
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list)
+ if (AP_QID_DEVICE(zdev->ap_dev->qid) == index) {
+ zdev->online = 0;
+ ap_flush_queue(zdev->ap_dev);
+ break;
+ }
+ spin_unlock_bh(&zcrypt_device_lock);
+}
+
+static void zcrypt_enable_card(int index)
+{
+ struct zcrypt_device *zdev;
+
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list)
+ if (AP_QID_DEVICE(zdev->ap_dev->qid) == index) {
+ zdev->online = 1;
+ break;
+ }
+ spin_unlock_bh(&zcrypt_device_lock);
+}
+
+static int zcrypt_status_write(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ unsigned char *lbuf, *ptr;
+ unsigned long local_count;
+ int j;
+
+ if (count <= 0)
+ return 0;
+
+#define LBUFSIZE 1200UL
+ lbuf = kmalloc(LBUFSIZE, GFP_KERNEL);
+ if (!lbuf) {
+ PRINTK("kmalloc failed!\n");
+ return 0;
+ }
+
+ local_count = min(LBUFSIZE - 1, count);
+ if (copy_from_user(lbuf, buffer, local_count) != 0) {
+ kfree(lbuf);
+ return -EFAULT;
+ }
+ lbuf[local_count] = '\0';
+
+ ptr = strstr(lbuf, "Online devices");
+ if (!ptr) {
+ PRINTK("Unable to parse data (missing \"Online devices\")\n");
+ goto out;
+ }
+ ptr = strstr(ptr, "\n");
+ if (!ptr) {
+ PRINTK("Unable to parse data (missing newline "
+ "after \"Online devices\")\n");
+ goto out;
+ }
+ ptr++;
+
+ if (strstr(ptr, "Waiting work element counts") == NULL) {
+ PRINTK("Unable to parse data (missing "
+ "\"Waiting work element counts\")\n");
+ goto out;
+ }
+
+ for (j = 0; j < 64 && *ptr; ptr++) {
+ /**
+ * '0' for no device, '1' for PCICA, '2' for PCICC,
+ * '3' for PCIXCC_MCL2, '4' for PCIXCC_MCL3,
+ * '5' for CEX2C and '6' for CEX2A'
+ */
+ if (*ptr >= '0' && *ptr <= '6')
+ j++;
+ else if (*ptr == 'd' || *ptr == 'D')
+ zcrypt_disable_card(j++);
+ else if (*ptr == 'e' || *ptr == 'E')
+ zcrypt_enable_card(j++);
+ else if (*ptr != ' ' && *ptr != '\t')
+ break;
+ }
+out:
+ kfree(lbuf);
+ return count;
+}
+
+/**
+ * The module initialization code.
+ */
+int __init zcrypt_api_init(void)
+{
+ int rc;
+
+ /* Register the request sprayer. */
+ rc = misc_register(&zcrypt_misc_device);
+ if (rc < 0) {
+ PRINTKW(KERN_ERR "misc_register (minor %d) failed with %d\n",
+ zcrypt_misc_device.minor, rc);
+ goto out;
+ }
+
+ /* Set up the proc file system */
+ zcrypt_entry = create_proc_entry("driver/z90crypt", 0644, NULL);
+ if (!zcrypt_entry) {
+ PRINTK("Couldn't create z90crypt proc entry\n");
+ rc = -ENOMEM;
+ goto out_misc;
+ }
+ zcrypt_entry->nlink = 1;
+ zcrypt_entry->data = NULL;
+ zcrypt_entry->read_proc = zcrypt_status_read;
+ zcrypt_entry->write_proc = zcrypt_status_write;
+
+ return 0;
+
+out_misc:
+ misc_deregister(&zcrypt_misc_device);
+out:
+ return rc;
+}
+
+/**
+ * The module termination code.
+ */
+void zcrypt_api_exit(void)
+{
+ remove_proc_entry("driver/z90crypt", NULL);
+ misc_deregister(&zcrypt_misc_device);
+}
+
+#ifndef CONFIG_ZCRYPT_MONOLITHIC
+module_init(zcrypt_api_init);
+module_exit(zcrypt_api_exit);
+#endif
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_api.h
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ * Cornelia Huck <cornelia.huck@de.ibm.com>
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ * Ralph Wuerthner <rwuerthn@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _ZCRYPT_API_H_
+#define _ZCRYPT_API_H_
+
+/**
+ * Macro definitions
+ *
+ * PDEBUG debugs in the form "zcrypt: function_name -> message"
+ *
+ * PRINTK is like PDEBUG, except that it is always enabled
+ * PRINTKN is like PRINTK, except that it does not include the function name
+ * PRINTKW is like PRINTK, except that it uses KERN_WARNING
+ * PRINTKC is like PRINTK, except that it uses KERN_CRIT
+ */
+#define DEV_NAME "zcrypt"
+
+#define PRINTK(fmt, args...) \
+ printk(KERN_DEBUG DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
+#define PRINTKN(fmt, args...) \
+ printk(KERN_DEBUG DEV_NAME ": " fmt, ## args)
+#define PRINTKW(fmt, args...) \
+ printk(KERN_WARNING DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
+#define PRINTKC(fmt, args...) \
+ printk(KERN_CRIT DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
+
+#ifdef ZCRYPT_DEBUG
+#define PDEBUG(fmt, args...) \
+ printk(KERN_DEBUG DEV_NAME ": %s -> " fmt, __FUNCTION__ , ## args)
+#else
+#define PDEBUG(fmt, args...) do {} while (0)
+#endif
+
+#include "ap_bus.h"
+#include <asm/zcrypt.h>
+
+/* deprecated status calls */
+#define ICAZ90STATUS _IOR(ZCRYPT_IOCTL_MAGIC, 0x10, struct ica_z90_status)
+#define Z90STAT_PCIXCCCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x43, int)
+
+/**
+ * This structure is deprecated and the corresponding ioctl() has been
+ * replaced with individual ioctl()s for each piece of data!
+ */
+struct ica_z90_status {
+ int totalcount;
+ int leedslitecount; // PCICA
+ int leeds2count; // PCICC
+ // int PCIXCCCount; is not in struct for backward compatibility
+ int requestqWaitCount;
+ int pendingqWaitCount;
+ int totalOpenCount;
+ int cryptoDomain;
+ // status: 0=not there, 1=PCICA, 2=PCICC, 3=PCIXCC_MCL2, 4=PCIXCC_MCL3,
+ // 5=CEX2C
+ unsigned char status[64];
+ // qdepth: # work elements waiting for each device
+ unsigned char qdepth[64];
+};
+
+/**
+ * device type for an actual device is either PCICA, PCICC, PCIXCC_MCL2,
+ * PCIXCC_MCL3, CEX2C, or CEX2A
+ *
+ * NOTE: PCIXCC_MCL3 refers to a PCIXCC with May 2004 version of Licensed
+ * Internal Code (LIC) (EC J12220 level 29).
+ * PCIXCC_MCL2 refers to any LIC before this level.
+ */
+#define ZCRYPT_PCICA 1
+#define ZCRYPT_PCICC 2
+#define ZCRYPT_PCIXCC_MCL2 3
+#define ZCRYPT_PCIXCC_MCL3 4
+#define ZCRYPT_CEX2C 5
+#define ZCRYPT_CEX2A 6
+
+struct zcrypt_device;
+
+struct zcrypt_ops {
+ long (*rsa_modexpo)(struct zcrypt_device *, struct ica_rsa_modexpo *);
+ long (*rsa_modexpo_crt)(struct zcrypt_device *,
+ struct ica_rsa_modexpo_crt *);
+ long (*send_cprb)(struct zcrypt_device *, struct ica_xcRB *);
+};
+
+struct zcrypt_device {
+ struct list_head list; /* Device list. */
+ spinlock_t lock; /* Per device lock. */
+ struct kref refcount; /* device refcounting */
+ struct ap_device *ap_dev; /* The "real" ap device. */
+ struct zcrypt_ops *ops; /* Crypto operations. */
+ int online; /* User online/offline */
+
+ int user_space_type; /* User space device id. */
+ char *type_string; /* User space device name. */
+ int min_mod_size; /* Min number of bits. */
+ int max_mod_size; /* Max number of bits. */
+ int short_crt; /* Card has crt length restriction. */
+ int speed_rating; /* Speed of the crypto device. */
+
+ int request_count; /* # current requests. */
+
+ struct ap_message reply; /* Per-device reply structure. */
+};
+
+struct zcrypt_device *zcrypt_device_alloc(size_t);
+void zcrypt_device_free(struct zcrypt_device *);
+void zcrypt_device_get(struct zcrypt_device *);
+int zcrypt_device_put(struct zcrypt_device *);
+int zcrypt_device_register(struct zcrypt_device *);
+void zcrypt_device_unregister(struct zcrypt_device *);
+int zcrypt_api_init(void);
+void zcrypt_api_exit(void);
+
+#endif /* _ZCRYPT_API_H_ */
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_cca_key.h
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _ZCRYPT_CCA_KEY_H_
+#define _ZCRYPT_CCA_KEY_H_
+
+struct T6_keyBlock_hdr {
+ unsigned short blen;
+ unsigned short ulen;
+ unsigned short flags;
+};
+
+/**
+ * mapping for the cca private ME key token.
+ * Three parts of interest here: the header, the private section and
+ * the public section.
+ *
+ * mapping for the cca key token header
+ */
+struct cca_token_hdr {
+ unsigned char token_identifier;
+ unsigned char version;
+ unsigned short token_length;
+ unsigned char reserved[4];
+} __attribute__((packed));
+
+#define CCA_TKN_HDR_ID_EXT 0x1E
+
+/**
+ * mapping for the cca private ME section
+ */
+struct cca_private_ext_ME_sec {
+ unsigned char section_identifier;
+ unsigned char version;
+ unsigned short section_length;
+ unsigned char private_key_hash[20];
+ unsigned char reserved1[4];
+ unsigned char key_format;
+ unsigned char reserved2;
+ unsigned char key_name_hash[20];
+ unsigned char key_use_flags[4];
+ unsigned char reserved3[6];
+ unsigned char reserved4[24];
+ unsigned char confounder[24];
+ unsigned char exponent[128];
+ unsigned char modulus[128];
+} __attribute__((packed));
+
+#define CCA_PVT_USAGE_ALL 0x80
+
+/**
+ * mapping for the cca public section
+ * In a private key, the modulus doesn't appear in the public
+ * section. So, an arbitrary public exponent of 0x010001 will be
+ * used, for a section length of 0x0F always.
+ */
+struct cca_public_sec {
+ unsigned char section_identifier;
+ unsigned char version;
+ unsigned short section_length;
+ unsigned char reserved[2];
+ unsigned short exponent_len;
+ unsigned short modulus_bit_len;
+ unsigned short modulus_byte_len; /* In a private key, this is 0 */
+} __attribute__((packed));
+
+/**
+ * mapping for the cca private CRT key 'token'
+ * The first three parts (the only parts considered in this release)
+ * are: the header, the private section and the public section.
+ * The header and public section are the same as for the
+ * struct cca_private_ext_ME
+ *
+ * Following the structure are the quantities p, q, dp, dq, u, pad,
+ * and modulus, in that order, where pad_len is the modulo 8
+ * complement of the residue modulo 8 of the sum of
+ * (p_len + q_len + dp_len + dq_len + u_len).
+ */
+struct cca_pvt_ext_CRT_sec {
+ unsigned char section_identifier;
+ unsigned char version;
+ unsigned short section_length;
+ unsigned char private_key_hash[20];
+ unsigned char reserved1[4];
+ unsigned char key_format;
+ unsigned char reserved2;
+ unsigned char key_name_hash[20];
+ unsigned char key_use_flags[4];
+ unsigned short p_len;
+ unsigned short q_len;
+ unsigned short dp_len;
+ unsigned short dq_len;
+ unsigned short u_len;
+ unsigned short mod_len;
+ unsigned char reserved3[4];
+ unsigned short pad_len;
+ unsigned char reserved4[52];
+ unsigned char confounder[8];
+} __attribute__((packed));
+
+#define CCA_PVT_EXT_CRT_SEC_ID_PVT 0x08
+#define CCA_PVT_EXT_CRT_SEC_FMT_CL 0x40
+
+/**
+ * Set up private key fields of a type6 MEX message.
+ * Note that all numerics in the key token are big-endian,
+ * while the entries in the key block header are little-endian.
+ *
+ * @mex: pointer to user input data
+ * @p: pointer to memory area for the key
+ *
+ * Returns the size of the key area or -EFAULT
+ */
+static inline int zcrypt_type6_mex_key_de(struct ica_rsa_modexpo *mex,
+ void *p, int big_endian)
+{
+ static struct cca_token_hdr static_pvt_me_hdr = {
+ .token_identifier = 0x1E,
+ .token_length = 0x0183,
+ };
+ static struct cca_private_ext_ME_sec static_pvt_me_sec = {
+ .section_identifier = 0x02,
+ .section_length = 0x016C,
+ .key_use_flags = {0x80,0x00,0x00,0x00},
+ };
+ static struct cca_public_sec static_pub_me_sec = {
+ .section_identifier = 0x04,
+ .section_length = 0x000F,
+ .exponent_len = 0x0003,
+ };
+ static char pk_exponent[3] = { 0x01, 0x00, 0x01 };
+ struct {
+ struct T6_keyBlock_hdr t6_hdr;
+ struct cca_token_hdr pvtMeHdr;
+ struct cca_private_ext_ME_sec pvtMeSec;
+ struct cca_public_sec pubMeSec;
+ char exponent[3];
+ } __attribute__((packed)) *key = p;
+ unsigned char *temp;
+
+ memset(key, 0, sizeof(*key));
+
+ if (big_endian) {
+ key->t6_hdr.blen = cpu_to_be16(0x189);
+ key->t6_hdr.ulen = cpu_to_be16(0x189 - 2);
+ } else {
+ key->t6_hdr.blen = cpu_to_le16(0x189);
+ key->t6_hdr.ulen = cpu_to_le16(0x189 - 2);
+ }
+ key->pvtMeHdr = static_pvt_me_hdr;
+ key->pvtMeSec = static_pvt_me_sec;
+ key->pubMeSec = static_pub_me_sec;
+ /**
+ * In a private key, the modulus doesn't appear in the public
+ * section. So, an arbitrary public exponent of 0x010001 will be
+ * used.
+ */
+ memcpy(key->exponent, pk_exponent, 3);
+
+ /* key parameter block */
+ temp = key->pvtMeSec.exponent +
+ sizeof(key->pvtMeSec.exponent) - mex->inputdatalength;
+ if (copy_from_user(temp, mex->b_key, mex->inputdatalength))
+ return -EFAULT;
+
+ /* modulus */
+ temp = key->pvtMeSec.modulus +
+ sizeof(key->pvtMeSec.modulus) - mex->inputdatalength;
+ if (copy_from_user(temp, mex->n_modulus, mex->inputdatalength))
+ return -EFAULT;
+ key->pubMeSec.modulus_bit_len = 8 * mex->inputdatalength;
+ return sizeof(*key);
+}
+
+/**
+ * Set up private key fields of a type6 MEX message. The _pad variant
+ * strips leading zeroes from the b_key.
+ * Note that all numerics in the key token are big-endian,
+ * while the entries in the key block header are little-endian.
+ *
+ * @mex: pointer to user input data
+ * @p: pointer to memory area for the key
+ *
+ * Returns the size of the key area or -EFAULT
+ */
+static inline int zcrypt_type6_mex_key_en(struct ica_rsa_modexpo *mex,
+ void *p, int big_endian)
+{
+ static struct cca_token_hdr static_pub_hdr = {
+ .token_identifier = 0x1E,
+ };
+ static struct cca_public_sec static_pub_sec = {
+ .section_identifier = 0x04,
+ };
+ struct {
+ struct T6_keyBlock_hdr t6_hdr;
+ struct cca_token_hdr pubHdr;
+ struct cca_public_sec pubSec;
+ char exponent[0];
+ } __attribute__((packed)) *key = p;
+ unsigned char *temp;
+ int i;
+
+ memset(key, 0, sizeof(*key));
+
+ key->pubHdr = static_pub_hdr;
+ key->pubSec = static_pub_sec;
+
+ /* key parameter block */
+ temp = key->exponent;
+ if (copy_from_user(temp, mex->b_key, mex->inputdatalength))
+ return -EFAULT;
+ /* Strip leading zeroes from b_key. */
+ for (i = 0; i < mex->inputdatalength; i++)
+ if (temp[i])
+ break;
+ if (i >= mex->inputdatalength)
+ return -EINVAL;
+ memmove(temp, temp + i, mex->inputdatalength - i);
+ temp += mex->inputdatalength - i;
+ /* modulus */
+ if (copy_from_user(temp, mex->n_modulus, mex->inputdatalength))
+ return -EFAULT;
+
+ key->pubSec.modulus_bit_len = 8 * mex->inputdatalength;
+ key->pubSec.modulus_byte_len = mex->inputdatalength;
+ key->pubSec.exponent_len = mex->inputdatalength - i;
+ key->pubSec.section_length = sizeof(key->pubSec) +
+ 2*mex->inputdatalength - i;
+ key->pubHdr.token_length =
+ key->pubSec.section_length + sizeof(key->pubHdr);
+ if (big_endian) {
+ key->t6_hdr.ulen = cpu_to_be16(key->pubHdr.token_length + 4);
+ key->t6_hdr.blen = cpu_to_be16(key->pubHdr.token_length + 6);
+ } else {
+ key->t6_hdr.ulen = cpu_to_le16(key->pubHdr.token_length + 4);
+ key->t6_hdr.blen = cpu_to_le16(key->pubHdr.token_length + 6);
+ }
+ return sizeof(*key) + 2*mex->inputdatalength - i;
+}
+
+/**
+ * Set up private key fields of a type6 CRT message.
+ * Note that all numerics in the key token are big-endian,
+ * while the entries in the key block header are little-endian.
+ *
+ * @mex: pointer to user input data
+ * @p: pointer to memory area for the key
+ *
+ * Returns the size of the key area or -EFAULT
+ */
+static inline int zcrypt_type6_crt_key(struct ica_rsa_modexpo_crt *crt,
+ void *p, int big_endian)
+{
+ static struct cca_public_sec static_cca_pub_sec = {
+ .section_identifier = 4,
+ .section_length = 0x000f,
+ .exponent_len = 0x0003,
+ };
+ static char pk_exponent[3] = { 0x01, 0x00, 0x01 };
+ struct {
+ struct T6_keyBlock_hdr t6_hdr;
+ struct cca_token_hdr token;
+ struct cca_pvt_ext_CRT_sec pvt;
+ char key_parts[0];
+ } __attribute__((packed)) *key = p;
+ struct cca_public_sec *pub;
+ int short_len, long_len, pad_len, key_len, size;
+
+ memset(key, 0, sizeof(*key));
+
+ short_len = crt->inputdatalength / 2;
+ long_len = short_len + 8;
+ pad_len = -(3*long_len + 2*short_len) & 7;
+ key_len = 3*long_len + 2*short_len + pad_len + crt->inputdatalength;
+ size = sizeof(*key) + key_len + sizeof(*pub) + 3;
+
+ /* parameter block.key block */
+ if (big_endian) {
+ key->t6_hdr.blen = cpu_to_be16(size);
+ key->t6_hdr.ulen = cpu_to_be16(size - 2);
+ } else {
+ key->t6_hdr.blen = cpu_to_le16(size);
+ key->t6_hdr.ulen = cpu_to_le16(size - 2);
+ }
+
+ /* key token header */
+ key->token.token_identifier = CCA_TKN_HDR_ID_EXT;
+ key->token.token_length = size - 6;
+
+ /* private section */
+ key->pvt.section_identifier = CCA_PVT_EXT_CRT_SEC_ID_PVT;
+ key->pvt.section_length = sizeof(key->pvt) + key_len;
+ key->pvt.key_format = CCA_PVT_EXT_CRT_SEC_FMT_CL;
+ key->pvt.key_use_flags[0] = CCA_PVT_USAGE_ALL;
+ key->pvt.p_len = key->pvt.dp_len = key->pvt.u_len = long_len;
+ key->pvt.q_len = key->pvt.dq_len = short_len;
+ key->pvt.mod_len = crt->inputdatalength;
+ key->pvt.pad_len = pad_len;
+
+ /* key parts */
+ if (copy_from_user(key->key_parts, crt->np_prime, long_len) ||
+ copy_from_user(key->key_parts + long_len,
+ crt->nq_prime, short_len) ||
+ copy_from_user(key->key_parts + long_len + short_len,
+ crt->bp_key, long_len) ||
+ copy_from_user(key->key_parts + 2*long_len + short_len,
+ crt->bq_key, short_len) ||
+ copy_from_user(key->key_parts + 2*long_len + 2*short_len,
+ crt->u_mult_inv, long_len))
+ return -EFAULT;
+ memset(key->key_parts + 3*long_len + 2*short_len + pad_len,
+ 0xff, crt->inputdatalength);
+ pub = (struct cca_public_sec *)(key->key_parts + key_len);
+ *pub = static_cca_pub_sec;
+ pub->modulus_bit_len = 8 * crt->inputdatalength;
+ /**
+ * In a private key, the modulus doesn't appear in the public
+ * section. So, an arbitrary public exponent of 0x010001 will be
+ * used.
+ */
+ memcpy((char *) (pub + 1), pk_exponent, 3);
+ return size;
+}
+
+#endif /* _ZCRYPT_CCA_KEY_H_ */
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_cex2a.c
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ * Ralph Wuerthner <rwuerthn@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <asm/atomic.h>
+#include <asm/uaccess.h>
+
+#include "ap_bus.h"
+#include "zcrypt_api.h"
+#include "zcrypt_error.h"
+#include "zcrypt_cex2a.h"
+
+#define CEX2A_MIN_MOD_SIZE 1 /* 8 bits */
+#define CEX2A_MAX_MOD_SIZE 256 /* 2048 bits */
+
+#define CEX2A_SPEED_RATING 970
+
+#define CEX2A_MAX_MESSAGE_SIZE 0x390 /* sizeof(struct type50_crb2_msg) */
+#define CEX2A_MAX_RESPONSE_SIZE 0x110 /* max outputdatalength + type80_hdr */
+
+#define CEX2A_CLEANUP_TIME (15*HZ)
+
+static struct ap_device_id zcrypt_cex2a_ids[] = {
+ { AP_DEVICE(AP_DEVICE_TYPE_CEX2A) },
+ { /* end of list */ },
+};
+
+#ifndef CONFIG_ZCRYPT_MONOLITHIC
+MODULE_DEVICE_TABLE(ap, zcrypt_cex2a_ids);
+MODULE_AUTHOR("IBM Corporation");
+MODULE_DESCRIPTION("CEX2A Cryptographic Coprocessor device driver, "
+ "Copyright 2001, 2006 IBM Corporation");
+MODULE_LICENSE("GPL");
+#endif
+
+static int zcrypt_cex2a_probe(struct ap_device *ap_dev);
+static void zcrypt_cex2a_remove(struct ap_device *ap_dev);
+static void zcrypt_cex2a_receive(struct ap_device *, struct ap_message *,
+ struct ap_message *);
+
+static struct ap_driver zcrypt_cex2a_driver = {
+ .probe = zcrypt_cex2a_probe,
+ .remove = zcrypt_cex2a_remove,
+ .receive = zcrypt_cex2a_receive,
+ .ids = zcrypt_cex2a_ids,
+};
+
+/**
+ * Convert a ICAMEX message to a type50 MEX message.
+ *
+ * @zdev: crypto device pointer
+ * @zreq: crypto request pointer
+ * @mex: pointer to user input data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+static int ICAMEX_msg_to_type50MEX_msg(struct zcrypt_device *zdev,
+ struct ap_message *ap_msg,
+ struct ica_rsa_modexpo *mex)
+{
+ unsigned char *mod, *exp, *inp;
+ int mod_len;
+
+ mod_len = mex->inputdatalength;
+
+ if (mod_len <= 128) {
+ struct type50_meb1_msg *meb1 = ap_msg->message;
+ memset(meb1, 0, sizeof(*meb1));
+ ap_msg->length = sizeof(*meb1);
+ meb1->header.msg_type_code = TYPE50_TYPE_CODE;
+ meb1->header.msg_len = sizeof(*meb1);
+ meb1->keyblock_type = TYPE50_MEB1_FMT;
+ mod = meb1->modulus + sizeof(meb1->modulus) - mod_len;
+ exp = meb1->exponent + sizeof(meb1->exponent) - mod_len;
+ inp = meb1->message + sizeof(meb1->message) - mod_len;
+ } else {
+ struct type50_meb2_msg *meb2 = ap_msg->message;
+ memset(meb2, 0, sizeof(*meb2));
+ ap_msg->length = sizeof(*meb2);
+ meb2->header.msg_type_code = TYPE50_TYPE_CODE;
+ meb2->header.msg_len = sizeof(*meb2);
+ meb2->keyblock_type = TYPE50_MEB2_FMT;
+ mod = meb2->modulus + sizeof(meb2->modulus) - mod_len;
+ exp = meb2->exponent + sizeof(meb2->exponent) - mod_len;
+ inp = meb2->message + sizeof(meb2->message) - mod_len;
+ }
+
+ if (copy_from_user(mod, mex->n_modulus, mod_len) ||
+ copy_from_user(exp, mex->b_key, mod_len) ||
+ copy_from_user(inp, mex->inputdata, mod_len))
+ return -EFAULT;
+ return 0;
+}
+
+/**
+ * Convert a ICACRT message to a type50 CRT message.
+ *
+ * @zdev: crypto device pointer
+ * @zreq: crypto request pointer
+ * @crt: pointer to user input data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+static int ICACRT_msg_to_type50CRT_msg(struct zcrypt_device *zdev,
+ struct ap_message *ap_msg,
+ struct ica_rsa_modexpo_crt *crt)
+{
+ int mod_len, short_len, long_len, long_offset;
+ unsigned char *p, *q, *dp, *dq, *u, *inp;
+
+ mod_len = crt->inputdatalength;
+ short_len = mod_len / 2;
+ long_len = mod_len / 2 + 8;
+
+ /*
+ * CEX2A cannot handle p, dp, or U > 128 bytes.
+ * If we have one of these, we need to do extra checking.
+ */
+ if (long_len > 128) {
+ /*
+ * zcrypt_rsa_crt already checked for the leading
+ * zeroes of np_prime, bp_key and u_mult_inc.
+ */
+ long_offset = long_len - 128;
+ long_len = 128;
+ } else
+ long_offset = 0;
+
+ /*
+ * Instead of doing extra work for p, dp, U > 64 bytes, we'll just use
+ * the larger message structure.
+ */
+ if (long_len <= 64) {
+ struct type50_crb1_msg *crb1 = ap_msg->message;
+ memset(crb1, 0, sizeof(*crb1));
+ ap_msg->length = sizeof(*crb1);
+ crb1->header.msg_type_code = TYPE50_TYPE_CODE;
+ crb1->header.msg_len = sizeof(*crb1);
+ crb1->keyblock_type = TYPE50_CRB1_FMT;
+ p = crb1->p + sizeof(crb1->p) - long_len;
+ q = crb1->q + sizeof(crb1->q) - short_len;
+ dp = crb1->dp + sizeof(crb1->dp) - long_len;
+ dq = crb1->dq + sizeof(crb1->dq) - short_len;
+ u = crb1->u + sizeof(crb1->u) - long_len;
+ inp = crb1->message + sizeof(crb1->message) - mod_len;
+ } else {
+ struct type50_crb2_msg *crb2 = ap_msg->message;
+ memset(crb2, 0, sizeof(*crb2));
+ ap_msg->length = sizeof(*crb2);
+ crb2->header.msg_type_code = TYPE50_TYPE_CODE;
+ crb2->header.msg_len = sizeof(*crb2);
+ crb2->keyblock_type = TYPE50_CRB2_FMT;
+ p = crb2->p + sizeof(crb2->p) - long_len;
+ q = crb2->q + sizeof(crb2->q) - short_len;
+ dp = crb2->dp + sizeof(crb2->dp) - long_len;
+ dq = crb2->dq + sizeof(crb2->dq) - short_len;
+ u = crb2->u + sizeof(crb2->u) - long_len;
+ inp = crb2->message + sizeof(crb2->message) - mod_len;
+ }
+
+ if (copy_from_user(p, crt->np_prime + long_offset, long_len) ||
+ copy_from_user(q, crt->nq_prime, short_len) ||
+ copy_from_user(dp, crt->bp_key + long_offset, long_len) ||
+ copy_from_user(dq, crt->bq_key, short_len) ||
+ copy_from_user(u, crt->u_mult_inv + long_offset, long_len) ||
+ copy_from_user(inp, crt->inputdata, mod_len))
+ return -EFAULT;
+
+
+ return 0;
+}
+
+/**
+ * Copy results from a type 80 reply message back to user space.
+ *
+ * @zdev: crypto device pointer
+ * @reply: reply AP message.
+ * @data: pointer to user output data
+ * @length: size of user output data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+static int convert_type80(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ char __user *outputdata,
+ unsigned int outputdatalength)
+{
+ struct type80_hdr *t80h = reply->message;
+ unsigned char *data;
+
+ if (t80h->len < sizeof(*t80h) + outputdatalength) {
+ /* The result is too short, the CEX2A card may not do that.. */
+ zdev->online = 0;
+ return -EAGAIN; /* repeat the request on a different device. */
+ }
+ BUG_ON(t80h->len > CEX2A_MAX_RESPONSE_SIZE);
+ data = reply->message + t80h->len - outputdatalength;
+ if (copy_to_user(outputdata, data, outputdatalength))
+ return -EFAULT;
+ return 0;
+}
+
+static int convert_response(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ char __user *outputdata,
+ unsigned int outputdatalength)
+{
+ /* Response type byte is the second byte in the response. */
+ switch (((unsigned char *) reply->message)[1]) {
+ case TYPE82_RSP_CODE:
+ case TYPE88_RSP_CODE:
+ return convert_error(zdev, reply);
+ case TYPE80_RSP_CODE:
+ return convert_type80(zdev, reply,
+ outputdata, outputdatalength);
+ default: /* Unknown response type, this should NEVER EVER happen */
+ PRINTK("Unrecognized Message Header: %08x%08x\n",
+ *(unsigned int *) reply->message,
+ *(unsigned int *) (reply->message+4));
+ zdev->online = 0;
+ return -EAGAIN; /* repeat the request on a different device. */
+ }
+}
+
+/**
+ * This function is called from the AP bus code after a crypto request
+ * "msg" has finished with the reply message "reply".
+ * It is called from tasklet context.
+ * @ap_dev: pointer to the AP device
+ * @msg: pointer to the AP message
+ * @reply: pointer to the AP reply message
+ */
+static void zcrypt_cex2a_receive(struct ap_device *ap_dev,
+ struct ap_message *msg,
+ struct ap_message *reply)
+{
+ static struct error_hdr error_reply = {
+ .type = TYPE82_RSP_CODE,
+ .reply_code = REP82_ERROR_MACHINE_FAILURE,
+ };
+ struct type80_hdr *t80h = reply->message;
+ int length;
+
+ /* Copy the reply message to the request message buffer. */
+ if (IS_ERR(reply))
+ memcpy(msg->message, &error_reply, sizeof(error_reply));
+ else if (t80h->type == TYPE80_RSP_CODE) {
+ length = min(CEX2A_MAX_RESPONSE_SIZE, (int) t80h->len);
+ memcpy(msg->message, reply->message, length);
+ } else
+ memcpy(msg->message, reply->message, sizeof error_reply);
+ complete((struct completion *) msg->private);
+}
+
+static atomic_t zcrypt_step = ATOMIC_INIT(0);
+
+/**
+ * The request distributor calls this function if it picked the CEX2A
+ * device to handle a modexpo request.
+ * @zdev: pointer to zcrypt_device structure that identifies the
+ * CEX2A device to the request distributor
+ * @mex: pointer to the modexpo request buffer
+ */
+static long zcrypt_cex2a_modexpo(struct zcrypt_device *zdev,
+ struct ica_rsa_modexpo *mex)
+{
+ struct ap_message ap_msg;
+ struct completion work;
+ int rc;
+
+ ap_msg.message = (void *) kmalloc(CEX2A_MAX_MESSAGE_SIZE, GFP_KERNEL);
+ if (!ap_msg.message)
+ return -ENOMEM;
+ ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
+ atomic_inc_return(&zcrypt_step);
+ ap_msg.private = &work;
+ rc = ICAMEX_msg_to_type50MEX_msg(zdev, &ap_msg, mex);
+ if (rc)
+ goto out_free;
+ init_completion(&work);
+ ap_queue_message(zdev->ap_dev, &ap_msg);
+ rc = wait_for_completion_interruptible_timeout(
+ &work, CEX2A_CLEANUP_TIME);
+ if (rc > 0)
+ rc = convert_response(zdev, &ap_msg, mex->outputdata,
+ mex->outputdatalength);
+ else {
+ /* Signal pending or message timed out. */
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
+ if (rc == 0)
+ /* Message timed out. */
+ rc = -ETIME;
+ }
+out_free:
+ kfree(ap_msg.message);
+ return rc;
+}
+
+/**
+ * The request distributor calls this function if it picked the CEX2A
+ * device to handle a modexpo_crt request.
+ * @zdev: pointer to zcrypt_device structure that identifies the
+ * CEX2A device to the request distributor
+ * @crt: pointer to the modexpoc_crt request buffer
+ */
+static long zcrypt_cex2a_modexpo_crt(struct zcrypt_device *zdev,
+ struct ica_rsa_modexpo_crt *crt)
+{
+ struct ap_message ap_msg;
+ struct completion work;
+ int rc;
+
+ ap_msg.message = (void *) kmalloc(CEX2A_MAX_MESSAGE_SIZE, GFP_KERNEL);
+ if (!ap_msg.message)
+ return -ENOMEM;
+ ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
+ atomic_inc_return(&zcrypt_step);
+ ap_msg.private = &work;
+ rc = ICACRT_msg_to_type50CRT_msg(zdev, &ap_msg, crt);
+ if (rc)
+ goto out_free;
+ init_completion(&work);
+ ap_queue_message(zdev->ap_dev, &ap_msg);
+ rc = wait_for_completion_interruptible_timeout(
+ &work, CEX2A_CLEANUP_TIME);
+ if (rc > 0)
+ rc = convert_response(zdev, &ap_msg, crt->outputdata,
+ crt->outputdatalength);
+ else {
+ /* Signal pending or message timed out. */
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
+ if (rc == 0)
+ /* Message timed out. */
+ rc = -ETIME;
+ }
+out_free:
+ kfree(ap_msg.message);
+ return rc;
+}
+
+/**
+ * The crypto operations for a CEX2A card.
+ */
+static struct zcrypt_ops zcrypt_cex2a_ops = {
+ .rsa_modexpo = zcrypt_cex2a_modexpo,
+ .rsa_modexpo_crt = zcrypt_cex2a_modexpo_crt,
+};
+
+/**
+ * Probe function for CEX2A cards. It always accepts the AP device
+ * since the bus_match already checked the hardware type.
+ * @ap_dev: pointer to the AP device.
+ */
+static int zcrypt_cex2a_probe(struct ap_device *ap_dev)
+{
+ struct zcrypt_device *zdev;
+ int rc;
+
+ zdev = zcrypt_device_alloc(CEX2A_MAX_RESPONSE_SIZE);
+ if (!zdev)
+ return -ENOMEM;
+ zdev->ap_dev = ap_dev;
+ zdev->ops = &zcrypt_cex2a_ops;
+ zdev->online = 1;
+ zdev->user_space_type = ZCRYPT_CEX2A;
+ zdev->type_string = "CEX2A";
+ zdev->min_mod_size = CEX2A_MIN_MOD_SIZE;
+ zdev->max_mod_size = CEX2A_MAX_MOD_SIZE;
+ zdev->short_crt = 1;
+ zdev->speed_rating = CEX2A_SPEED_RATING;
+ ap_dev->reply = &zdev->reply;
+ ap_dev->private = zdev;
+ rc = zcrypt_device_register(zdev);
+ if (rc)
+ goto out_free;
+ return 0;
+
+out_free:
+ ap_dev->private = NULL;
+ zcrypt_device_free(zdev);
+ return rc;
+}
+
+/**
+ * This is called to remove the extended CEX2A driver information
+ * if an AP device is removed.
+ */
+static void zcrypt_cex2a_remove(struct ap_device *ap_dev)
+{
+ struct zcrypt_device *zdev = ap_dev->private;
+
+ zcrypt_device_unregister(zdev);
+}
+
+int __init zcrypt_cex2a_init(void)
+{
+ return ap_driver_register(&zcrypt_cex2a_driver, THIS_MODULE, "cex2a");
+}
+
+void __exit zcrypt_cex2a_exit(void)
+{
+ ap_driver_unregister(&zcrypt_cex2a_driver);
+}
+
+#ifndef CONFIG_ZCRYPT_MONOLITHIC
+module_init(zcrypt_cex2a_init);
+module_exit(zcrypt_cex2a_exit);
+#endif
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_cex2a.h
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _ZCRYPT_CEX2A_H_
+#define _ZCRYPT_CEX2A_H_
+
+/**
+ * The type 50 message family is associated with a CEX2A card.
+ *
+ * The four members of the family are described below.
+ *
+ * Note that all unsigned char arrays are right-justified and left-padded
+ * with zeroes.
+ *
+ * Note that all reserved fields must be zeroes.
+ */
+struct type50_hdr {
+ unsigned char reserved1;
+ unsigned char msg_type_code; /* 0x50 */
+ unsigned short msg_len;
+ unsigned char reserved2;
+ unsigned char ignored;
+ unsigned short reserved3;
+} __attribute__((packed));
+
+#define TYPE50_TYPE_CODE 0x50
+
+#define TYPE50_MEB1_FMT 0x0001
+#define TYPE50_MEB2_FMT 0x0002
+#define TYPE50_CRB1_FMT 0x0011
+#define TYPE50_CRB2_FMT 0x0012
+
+/* Mod-Exp, with a small modulus */
+struct type50_meb1_msg {
+ struct type50_hdr header;
+ unsigned short keyblock_type; /* 0x0001 */
+ unsigned char reserved[6];
+ unsigned char exponent[128];
+ unsigned char modulus[128];
+ unsigned char message[128];
+} __attribute__((packed));
+
+/* Mod-Exp, with a large modulus */
+struct type50_meb2_msg {
+ struct type50_hdr header;
+ unsigned short keyblock_type; /* 0x0002 */
+ unsigned char reserved[6];
+ unsigned char exponent[256];
+ unsigned char modulus[256];
+ unsigned char message[256];
+} __attribute__((packed));
+
+/* CRT, with a small modulus */
+struct type50_crb1_msg {
+ struct type50_hdr header;
+ unsigned short keyblock_type; /* 0x0011 */
+ unsigned char reserved[6];
+ unsigned char p[64];
+ unsigned char q[64];
+ unsigned char dp[64];
+ unsigned char dq[64];
+ unsigned char u[64];
+ unsigned char message[128];
+} __attribute__((packed));
+
+/* CRT, with a large modulus */
+struct type50_crb2_msg {
+ struct type50_hdr header;
+ unsigned short keyblock_type; /* 0x0012 */
+ unsigned char reserved[6];
+ unsigned char p[128];
+ unsigned char q[128];
+ unsigned char dp[128];
+ unsigned char dq[128];
+ unsigned char u[128];
+ unsigned char message[256];
+} __attribute__((packed));
+
+/**
+ * The type 80 response family is associated with a CEX2A card.
+ *
+ * Note that all unsigned char arrays are right-justified and left-padded
+ * with zeroes.
+ *
+ * Note that all reserved fields must be zeroes.
+ */
+
+#define TYPE80_RSP_CODE 0x80
+
+struct type80_hdr {
+ unsigned char reserved1;
+ unsigned char type; /* 0x80 */
+ unsigned short len;
+ unsigned char code; /* 0x00 */
+ unsigned char reserved2[3];
+ unsigned char reserved3[8];
+} __attribute__((packed));
+
+int zcrypt_cex2a_init(void);
+void zcrypt_cex2a_exit(void);
+
+#endif /* _ZCRYPT_CEX2A_H_ */
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_error.h
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _ZCRYPT_ERROR_H_
+#define _ZCRYPT_ERROR_H_
+
+#include "zcrypt_api.h"
+
+/**
+ * Reply Messages
+ *
+ * Error reply messages are of two types:
+ * 82: Error (see below)
+ * 88: Error (see below)
+ * Both type 82 and type 88 have the same structure in the header.
+ *
+ * Request reply messages are of three known types:
+ * 80: Reply from a Type 50 Request (see CEX2A-RELATED STRUCTS)
+ * 84: Reply from a Type 4 Request (see PCICA-RELATED STRUCTS)
+ * 86: Reply from a Type 6 Request (see PCICC/PCIXCC/CEX2C-RELATED STRUCTS)
+ *
+ */
+struct error_hdr {
+ unsigned char reserved1; /* 0x00 */
+ unsigned char type; /* 0x82 or 0x88 */
+ unsigned char reserved2[2]; /* 0x0000 */
+ unsigned char reply_code; /* reply code */
+ unsigned char reserved3[3]; /* 0x000000 */
+};
+
+#define TYPE82_RSP_CODE 0x82
+#define TYPE88_RSP_CODE 0x88
+
+#define REP82_ERROR_MACHINE_FAILURE 0x10
+#define REP82_ERROR_PREEMPT_FAILURE 0x12
+#define REP82_ERROR_CHECKPT_FAILURE 0x14
+#define REP82_ERROR_MESSAGE_TYPE 0x20
+#define REP82_ERROR_INVALID_COMM_CD 0x21 /* Type 84 */
+#define REP82_ERROR_INVALID_MSG_LEN 0x23
+#define REP82_ERROR_RESERVD_FIELD 0x24 /* was 0x50 */
+#define REP82_ERROR_FORMAT_FIELD 0x29
+#define REP82_ERROR_INVALID_COMMAND 0x30
+#define REP82_ERROR_MALFORMED_MSG 0x40
+#define REP82_ERROR_RESERVED_FIELDO 0x50 /* old value */
+#define REP82_ERROR_WORD_ALIGNMENT 0x60
+#define REP82_ERROR_MESSAGE_LENGTH 0x80
+#define REP82_ERROR_OPERAND_INVALID 0x82
+#define REP82_ERROR_OPERAND_SIZE 0x84
+#define REP82_ERROR_EVEN_MOD_IN_OPND 0x85
+#define REP82_ERROR_RESERVED_FIELD 0x88
+#define REP82_ERROR_TRANSPORT_FAIL 0x90
+#define REP82_ERROR_PACKET_TRUNCATED 0xA0
+#define REP82_ERROR_ZERO_BUFFER_LEN 0xB0
+
+#define REP88_ERROR_MODULE_FAILURE 0x10
+
+#define REP88_ERROR_MESSAGE_TYPE 0x20
+#define REP88_ERROR_MESSAGE_MALFORMD 0x22
+#define REP88_ERROR_MESSAGE_LENGTH 0x23
+#define REP88_ERROR_RESERVED_FIELD 0x24
+#define REP88_ERROR_KEY_TYPE 0x34
+#define REP88_ERROR_INVALID_KEY 0x82 /* CEX2A */
+#define REP88_ERROR_OPERAND 0x84 /* CEX2A */
+#define REP88_ERROR_OPERAND_EVEN_MOD 0x85 /* CEX2A */
+
+static inline int convert_error(struct zcrypt_device *zdev,
+ struct ap_message *reply)
+{
+ struct error_hdr *ehdr = reply->message;
+
+ PRINTK("Hardware error : Type %02x Message Header: %08x%08x\n",
+ ehdr->type, *(unsigned int *) reply->message,
+ *(unsigned int *) (reply->message + 4));
+
+ switch (ehdr->reply_code) {
+ case REP82_ERROR_OPERAND_INVALID:
+ case REP82_ERROR_OPERAND_SIZE:
+ case REP82_ERROR_EVEN_MOD_IN_OPND:
+ case REP88_ERROR_MESSAGE_MALFORMD:
+ // REP88_ERROR_INVALID_KEY // '82' CEX2A
+ // REP88_ERROR_OPERAND // '84' CEX2A
+ // REP88_ERROR_OPERAND_EVEN_MOD // '85' CEX2A
+ /* Invalid input data. */
+ return -EINVAL;
+ case REP82_ERROR_MESSAGE_TYPE:
+ // REP88_ERROR_MESSAGE_TYPE // '20' CEX2A
+ /**
+ * To sent a message of the wrong type is a bug in the
+ * device driver. Warn about it, disable the device
+ * and then repeat the request.
+ */
+ WARN_ON(1);
+ zdev->online = 0;
+ return -EAGAIN;
+ case REP82_ERROR_TRANSPORT_FAIL:
+ case REP82_ERROR_MACHINE_FAILURE:
+ // REP88_ERROR_MODULE_FAILURE // '10' CEX2A
+ /* If a card fails disable it and repeat the request. */
+ zdev->online = 0;
+ return -EAGAIN;
+ default:
+ PRINTKW("unknown type %02x reply code = %d\n",
+ ehdr->type, ehdr->reply_code);
+ zdev->online = 0;
+ return -EAGAIN; /* repeat the request on a different device. */
+ }
+}
+
+#endif /* _ZCRYPT_ERROR_H_ */
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_mono.c
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/miscdevice.h>
+#include <linux/fs.h>
+#include <linux/proc_fs.h>
+#include <linux/compat.h>
+#include <asm/atomic.h>
+#include <asm/uaccess.h>
+
+#include "ap_bus.h"
+#include "zcrypt_api.h"
+#include "zcrypt_pcica.h"
+#include "zcrypt_pcicc.h"
+#include "zcrypt_pcixcc.h"
+#include "zcrypt_cex2a.h"
+
+/**
+ * The module initialization code.
+ */
+int __init zcrypt_init(void)
+{
+ int rc;
+
+ rc = ap_module_init();
+ if (rc)
+ goto out;
+ rc = zcrypt_api_init();
+ if (rc)
+ goto out_ap;
+ rc = zcrypt_pcica_init();
+ if (rc)
+ goto out_api;
+ rc = zcrypt_pcicc_init();
+ if (rc)
+ goto out_pcica;
+ rc = zcrypt_pcixcc_init();
+ if (rc)
+ goto out_pcicc;
+ rc = zcrypt_cex2a_init();
+ if (rc)
+ goto out_pcixcc;
+ return 0;
+
+out_pcixcc:
+ zcrypt_pcixcc_exit();
+out_pcicc:
+ zcrypt_pcicc_exit();
+out_pcica:
+ zcrypt_pcica_exit();
+out_api:
+ zcrypt_api_exit();
+out_ap:
+ ap_module_exit();
+out:
+ return rc;
+}
+
+/**
+ * The module termination code.
+ */
+void __exit zcrypt_exit(void)
+{
+ zcrypt_cex2a_exit();
+ zcrypt_pcixcc_exit();
+ zcrypt_pcicc_exit();
+ zcrypt_pcica_exit();
+ zcrypt_api_exit();
+ ap_module_exit();
+}
+
+module_init(zcrypt_init);
+module_exit(zcrypt_exit);
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_pcica.c
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ * Ralph Wuerthner <rwuerthn@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <asm/atomic.h>
+#include <asm/uaccess.h>
+
+#include "ap_bus.h"
+#include "zcrypt_api.h"
+#include "zcrypt_error.h"
+#include "zcrypt_pcica.h"
+
+#define PCICA_MIN_MOD_SIZE 1 /* 8 bits */
+#define PCICA_MAX_MOD_SIZE 256 /* 2048 bits */
+
+#define PCICA_SPEED_RATING 2800
+
+#define PCICA_MAX_MESSAGE_SIZE 0x3a0 /* sizeof(struct type4_lcr) */
+#define PCICA_MAX_RESPONSE_SIZE 0x110 /* max outputdatalength + type80_hdr */
+
+#define PCICA_CLEANUP_TIME (15*HZ)
+
+static struct ap_device_id zcrypt_pcica_ids[] = {
+ { AP_DEVICE(AP_DEVICE_TYPE_PCICA) },
+ { /* end of list */ },
+};
+
+#ifndef CONFIG_ZCRYPT_MONOLITHIC
+MODULE_DEVICE_TABLE(ap, zcrypt_pcica_ids);
+MODULE_AUTHOR("IBM Corporation");
+MODULE_DESCRIPTION("PCICA Cryptographic Coprocessor device driver, "
+ "Copyright 2001, 2006 IBM Corporation");
+MODULE_LICENSE("GPL");
+#endif
+
+static int zcrypt_pcica_probe(struct ap_device *ap_dev);
+static void zcrypt_pcica_remove(struct ap_device *ap_dev);
+static void zcrypt_pcica_receive(struct ap_device *, struct ap_message *,
+ struct ap_message *);
+
+static struct ap_driver zcrypt_pcica_driver = {
+ .probe = zcrypt_pcica_probe,
+ .remove = zcrypt_pcica_remove,
+ .receive = zcrypt_pcica_receive,
+ .ids = zcrypt_pcica_ids,
+};
+
+/**
+ * Convert a ICAMEX message to a type4 MEX message.
+ *
+ * @zdev: crypto device pointer
+ * @zreq: crypto request pointer
+ * @mex: pointer to user input data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+static int ICAMEX_msg_to_type4MEX_msg(struct zcrypt_device *zdev,
+ struct ap_message *ap_msg,
+ struct ica_rsa_modexpo *mex)
+{
+ unsigned char *modulus, *exponent, *message;
+ int mod_len;
+
+ mod_len = mex->inputdatalength;
+
+ if (mod_len <= 128) {
+ struct type4_sme *sme = ap_msg->message;
+ memset(sme, 0, sizeof(*sme));
+ ap_msg->length = sizeof(*sme);
+ sme->header.msg_fmt = TYPE4_SME_FMT;
+ sme->header.msg_len = sizeof(*sme);
+ sme->header.msg_type_code = TYPE4_TYPE_CODE;
+ sme->header.request_code = TYPE4_REQU_CODE;
+ modulus = sme->modulus + sizeof(sme->modulus) - mod_len;
+ exponent = sme->exponent + sizeof(sme->exponent) - mod_len;
+ message = sme->message + sizeof(sme->message) - mod_len;
+ } else {
+ struct type4_lme *lme = ap_msg->message;
+ memset(lme, 0, sizeof(*lme));
+ ap_msg->length = sizeof(*lme);
+ lme->header.msg_fmt = TYPE4_LME_FMT;
+ lme->header.msg_len = sizeof(*lme);
+ lme->header.msg_type_code = TYPE4_TYPE_CODE;
+ lme->header.request_code = TYPE4_REQU_CODE;
+ modulus = lme->modulus + sizeof(lme->modulus) - mod_len;
+ exponent = lme->exponent + sizeof(lme->exponent) - mod_len;
+ message = lme->message + sizeof(lme->message) - mod_len;
+ }
+
+ if (copy_from_user(modulus, mex->n_modulus, mod_len) ||
+ copy_from_user(exponent, mex->b_key, mod_len) ||
+ copy_from_user(message, mex->inputdata, mod_len))
+ return -EFAULT;
+ return 0;
+}
+
+/**
+ * Convert a ICACRT message to a type4 CRT message.
+ *
+ * @zdev: crypto device pointer
+ * @zreq: crypto request pointer
+ * @crt: pointer to user input data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+static int ICACRT_msg_to_type4CRT_msg(struct zcrypt_device *zdev,
+ struct ap_message *ap_msg,
+ struct ica_rsa_modexpo_crt *crt)
+{
+ unsigned char *p, *q, *dp, *dq, *u, *inp;
+ int mod_len, short_len, long_len;
+
+ mod_len = crt->inputdatalength;
+ short_len = mod_len / 2;
+ long_len = mod_len / 2 + 8;
+
+ if (mod_len <= 128) {
+ struct type4_scr *scr = ap_msg->message;
+ memset(scr, 0, sizeof(*scr));
+ ap_msg->length = sizeof(*scr);
+ scr->header.msg_type_code = TYPE4_TYPE_CODE;
+ scr->header.request_code = TYPE4_REQU_CODE;
+ scr->header.msg_fmt = TYPE4_SCR_FMT;
+ scr->header.msg_len = sizeof(*scr);
+ p = scr->p + sizeof(scr->p) - long_len;
+ q = scr->q + sizeof(scr->q) - short_len;
+ dp = scr->dp + sizeof(scr->dp) - long_len;
+ dq = scr->dq + sizeof(scr->dq) - short_len;
+ u = scr->u + sizeof(scr->u) - long_len;
+ inp = scr->message + sizeof(scr->message) - mod_len;
+ } else {
+ struct type4_lcr *lcr = ap_msg->message;
+ memset(lcr, 0, sizeof(*lcr));
+ ap_msg->length = sizeof(*lcr);
+ lcr->header.msg_type_code = TYPE4_TYPE_CODE;
+ lcr->header.request_code = TYPE4_REQU_CODE;
+ lcr->header.msg_fmt = TYPE4_LCR_FMT;
+ lcr->header.msg_len = sizeof(*lcr);
+ p = lcr->p + sizeof(lcr->p) - long_len;
+ q = lcr->q + sizeof(lcr->q) - short_len;
+ dp = lcr->dp + sizeof(lcr->dp) - long_len;
+ dq = lcr->dq + sizeof(lcr->dq) - short_len;
+ u = lcr->u + sizeof(lcr->u) - long_len;
+ inp = lcr->message + sizeof(lcr->message) - mod_len;
+ }
+
+ if (copy_from_user(p, crt->np_prime, long_len) ||
+ copy_from_user(q, crt->nq_prime, short_len) ||
+ copy_from_user(dp, crt->bp_key, long_len) ||
+ copy_from_user(dq, crt->bq_key, short_len) ||
+ copy_from_user(u, crt->u_mult_inv, long_len) ||
+ copy_from_user(inp, crt->inputdata, mod_len))
+ return -EFAULT;
+ return 0;
+}
+
+/**
+ * Copy results from a type 84 reply message back to user space.
+ *
+ * @zdev: crypto device pointer
+ * @reply: reply AP message.
+ * @data: pointer to user output data
+ * @length: size of user output data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+static inline int convert_type84(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ char __user *outputdata,
+ unsigned int outputdatalength)
+{
+ struct type84_hdr *t84h = reply->message;
+ char *data;
+
+ if (t84h->len < sizeof(*t84h) + outputdatalength) {
+ /* The result is too short, the PCICA card may not do that.. */
+ zdev->online = 0;
+ return -EAGAIN; /* repeat the request on a different device. */
+ }
+ BUG_ON(t84h->len > PCICA_MAX_RESPONSE_SIZE);
+ data = reply->message + t84h->len - outputdatalength;
+ if (copy_to_user(outputdata, data, outputdatalength))
+ return -EFAULT;
+ return 0;
+}
+
+static int convert_response(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ char __user *outputdata,
+ unsigned int outputdatalength)
+{
+ /* Response type byte is the second byte in the response. */
+ switch (((unsigned char *) reply->message)[1]) {
+ case TYPE82_RSP_CODE:
+ case TYPE88_RSP_CODE:
+ return convert_error(zdev, reply);
+ case TYPE84_RSP_CODE:
+ return convert_type84(zdev, reply,
+ outputdata, outputdatalength);
+ default: /* Unknown response type, this should NEVER EVER happen */
+ PRINTK("Unrecognized Message Header: %08x%08x\n",
+ *(unsigned int *) reply->message,
+ *(unsigned int *) (reply->message+4));
+ zdev->online = 0;
+ return -EAGAIN; /* repeat the request on a different device. */
+ }
+}
+
+/**
+ * This function is called from the AP bus code after a crypto request
+ * "msg" has finished with the reply message "reply".
+ * It is called from tasklet context.
+ * @ap_dev: pointer to the AP device
+ * @msg: pointer to the AP message
+ * @reply: pointer to the AP reply message
+ */
+static void zcrypt_pcica_receive(struct ap_device *ap_dev,
+ struct ap_message *msg,
+ struct ap_message *reply)
+{
+ static struct error_hdr error_reply = {
+ .type = TYPE82_RSP_CODE,
+ .reply_code = REP82_ERROR_MACHINE_FAILURE,
+ };
+ struct type84_hdr *t84h = reply->message;
+ int length;
+
+ /* Copy the reply message to the request message buffer. */
+ if (IS_ERR(reply))
+ memcpy(msg->message, &error_reply, sizeof(error_reply));
+ else if (t84h->code == TYPE84_RSP_CODE) {
+ length = min(PCICA_MAX_RESPONSE_SIZE, (int) t84h->len);
+ memcpy(msg->message, reply->message, length);
+ } else
+ memcpy(msg->message, reply->message, sizeof error_reply);
+ complete((struct completion *) msg->private);
+}
+
+static atomic_t zcrypt_step = ATOMIC_INIT(0);
+
+/**
+ * The request distributor calls this function if it picked the PCICA
+ * device to handle a modexpo request.
+ * @zdev: pointer to zcrypt_device structure that identifies the
+ * PCICA device to the request distributor
+ * @mex: pointer to the modexpo request buffer
+ */
+static long zcrypt_pcica_modexpo(struct zcrypt_device *zdev,
+ struct ica_rsa_modexpo *mex)
+{
+ struct ap_message ap_msg;
+ struct completion work;
+ int rc;
+
+ ap_msg.message = (void *) kmalloc(PCICA_MAX_MESSAGE_SIZE, GFP_KERNEL);
+ if (!ap_msg.message)
+ return -ENOMEM;
+ ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
+ atomic_inc_return(&zcrypt_step);
+ ap_msg.private = &work;
+ rc = ICAMEX_msg_to_type4MEX_msg(zdev, &ap_msg, mex);
+ if (rc)
+ goto out_free;
+ init_completion(&work);
+ ap_queue_message(zdev->ap_dev, &ap_msg);
+ rc = wait_for_completion_interruptible_timeout(
+ &work, PCICA_CLEANUP_TIME);
+ if (rc > 0)
+ rc = convert_response(zdev, &ap_msg, mex->outputdata,
+ mex->outputdatalength);
+ else {
+ /* Signal pending or message timed out. */
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
+ if (rc == 0)
+ /* Message timed out. */
+ rc = -ETIME;
+ }
+out_free:
+ kfree(ap_msg.message);
+ return rc;
+}
+
+/**
+ * The request distributor calls this function if it picked the PCICA
+ * device to handle a modexpo_crt request.
+ * @zdev: pointer to zcrypt_device structure that identifies the
+ * PCICA device to the request distributor
+ * @crt: pointer to the modexpoc_crt request buffer
+ */
+static long zcrypt_pcica_modexpo_crt(struct zcrypt_device *zdev,
+ struct ica_rsa_modexpo_crt *crt)
+{
+ struct ap_message ap_msg;
+ struct completion work;
+ int rc;
+
+ ap_msg.message = (void *) kmalloc(PCICA_MAX_MESSAGE_SIZE, GFP_KERNEL);
+ if (!ap_msg.message)
+ return -ENOMEM;
+ ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
+ atomic_inc_return(&zcrypt_step);
+ ap_msg.private = &work;
+ rc = ICACRT_msg_to_type4CRT_msg(zdev, &ap_msg, crt);
+ if (rc)
+ goto out_free;
+ init_completion(&work);
+ ap_queue_message(zdev->ap_dev, &ap_msg);
+ rc = wait_for_completion_interruptible_timeout(
+ &work, PCICA_CLEANUP_TIME);
+ if (rc > 0)
+ rc = convert_response(zdev, &ap_msg, crt->outputdata,
+ crt->outputdatalength);
+ else {
+ /* Signal pending or message timed out. */
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
+ if (rc == 0)
+ /* Message timed out. */
+ rc = -ETIME;
+ }
+out_free:
+ kfree(ap_msg.message);
+ return rc;
+}
+
+/**
+ * The crypto operations for a PCICA card.
+ */
+static struct zcrypt_ops zcrypt_pcica_ops = {
+ .rsa_modexpo = zcrypt_pcica_modexpo,
+ .rsa_modexpo_crt = zcrypt_pcica_modexpo_crt,
+};
+
+/**
+ * Probe function for PCICA cards. It always accepts the AP device
+ * since the bus_match already checked the hardware type.
+ * @ap_dev: pointer to the AP device.
+ */
+static int zcrypt_pcica_probe(struct ap_device *ap_dev)
+{
+ struct zcrypt_device *zdev;
+ int rc;
+
+ zdev = zcrypt_device_alloc(PCICA_MAX_RESPONSE_SIZE);
+ if (!zdev)
+ return -ENOMEM;
+ zdev->ap_dev = ap_dev;
+ zdev->ops = &zcrypt_pcica_ops;
+ zdev->online = 1;
+ zdev->user_space_type = ZCRYPT_PCICA;
+ zdev->type_string = "PCICA";
+ zdev->min_mod_size = PCICA_MIN_MOD_SIZE;
+ zdev->max_mod_size = PCICA_MAX_MOD_SIZE;
+ zdev->speed_rating = PCICA_SPEED_RATING;
+ ap_dev->reply = &zdev->reply;
+ ap_dev->private = zdev;
+ rc = zcrypt_device_register(zdev);
+ if (rc)
+ goto out_free;
+ return 0;
+
+out_free:
+ ap_dev->private = NULL;
+ zcrypt_device_free(zdev);
+ return rc;
+}
+
+/**
+ * This is called to remove the extended PCICA driver information
+ * if an AP device is removed.
+ */
+static void zcrypt_pcica_remove(struct ap_device *ap_dev)
+{
+ struct zcrypt_device *zdev = ap_dev->private;
+
+ zcrypt_device_unregister(zdev);
+}
+
+int __init zcrypt_pcica_init(void)
+{
+ return ap_driver_register(&zcrypt_pcica_driver, THIS_MODULE, "pcica");
+}
+
+void zcrypt_pcica_exit(void)
+{
+ ap_driver_unregister(&zcrypt_pcica_driver);
+}
+
+#ifndef CONFIG_ZCRYPT_MONOLITHIC
+module_init(zcrypt_pcica_init);
+module_exit(zcrypt_pcica_exit);
+#endif
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_pcica.h
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _ZCRYPT_PCICA_H_
+#define _ZCRYPT_PCICA_H_
+
+/**
+ * The type 4 message family is associated with a PCICA card.
+ *
+ * The four members of the family are described below.
+ *
+ * Note that all unsigned char arrays are right-justified and left-padded
+ * with zeroes.
+ *
+ * Note that all reserved fields must be zeroes.
+ */
+struct type4_hdr {
+ unsigned char reserved1;
+ unsigned char msg_type_code; /* 0x04 */
+ unsigned short msg_len;
+ unsigned char request_code; /* 0x40 */
+ unsigned char msg_fmt;
+ unsigned short reserved2;
+} __attribute__((packed));
+
+#define TYPE4_TYPE_CODE 0x04
+#define TYPE4_REQU_CODE 0x40
+
+#define TYPE4_SME_FMT 0x00
+#define TYPE4_LME_FMT 0x10
+#define TYPE4_SCR_FMT 0x40
+#define TYPE4_LCR_FMT 0x50
+
+/* Mod-Exp, with a small modulus */
+struct type4_sme {
+ struct type4_hdr header;
+ unsigned char message[128];
+ unsigned char exponent[128];
+ unsigned char modulus[128];
+} __attribute__((packed));
+
+/* Mod-Exp, with a large modulus */
+struct type4_lme {
+ struct type4_hdr header;
+ unsigned char message[256];
+ unsigned char exponent[256];
+ unsigned char modulus[256];
+} __attribute__((packed));
+
+/* CRT, with a small modulus */
+struct type4_scr {
+ struct type4_hdr header;
+ unsigned char message[128];
+ unsigned char dp[72];
+ unsigned char dq[64];
+ unsigned char p[72];
+ unsigned char q[64];
+ unsigned char u[72];
+} __attribute__((packed));
+
+/* CRT, with a large modulus */
+struct type4_lcr {
+ struct type4_hdr header;
+ unsigned char message[256];
+ unsigned char dp[136];
+ unsigned char dq[128];
+ unsigned char p[136];
+ unsigned char q[128];
+ unsigned char u[136];
+} __attribute__((packed));
+
+/**
+ * The type 84 response family is associated with a PCICA card.
+ *
+ * Note that all unsigned char arrays are right-justified and left-padded
+ * with zeroes.
+ *
+ * Note that all reserved fields must be zeroes.
+ */
+
+struct type84_hdr {
+ unsigned char reserved1;
+ unsigned char code;
+ unsigned short len;
+ unsigned char reserved2[4];
+} __attribute__((packed));
+
+#define TYPE84_RSP_CODE 0x84
+
+int zcrypt_pcica_init(void);
+void zcrypt_pcica_exit(void);
+
+#endif /* _ZCRYPT_PCICA_H_ */
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_pcicc.c
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ * Ralph Wuerthner <rwuerthn@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <asm/atomic.h>
+#include <asm/uaccess.h>
+
+#include "ap_bus.h"
+#include "zcrypt_api.h"
+#include "zcrypt_error.h"
+#include "zcrypt_pcicc.h"
+#include "zcrypt_cca_key.h"
+
+#define PCICC_MIN_MOD_SIZE 64 /* 512 bits */
+#define PCICC_MAX_MOD_SIZE_OLD 128 /* 1024 bits */
+#define PCICC_MAX_MOD_SIZE 256 /* 2048 bits */
+
+/**
+ * PCICC cards need a speed rating of 0. This keeps them at the end of
+ * the zcrypt device list (see zcrypt_api.c). PCICC cards are only
+ * used if no other cards are present because they are slow and can only
+ * cope with PKCS12 padded requests. The logic is queer. PKCS11 padded
+ * requests are rejected. The modexpo function encrypts PKCS12 padded data
+ * and decrypts any non-PKCS12 padded data (except PKCS11) in the assumption
+ * that it's encrypted PKCS12 data. The modexpo_crt function always decrypts
+ * the data in the assumption that its PKCS12 encrypted data.
+ */
+#define PCICC_SPEED_RATING 0
+
+#define PCICC_MAX_MESSAGE_SIZE 0x710 /* max size type6 v1 crt message */
+#define PCICC_MAX_RESPONSE_SIZE 0x710 /* max size type86 v1 reply */
+
+#define PCICC_CLEANUP_TIME (15*HZ)
+
+static struct ap_device_id zcrypt_pcicc_ids[] = {
+ { AP_DEVICE(AP_DEVICE_TYPE_PCICC) },
+ { /* end of list */ },
+};
+
+#ifndef CONFIG_ZCRYPT_MONOLITHIC
+MODULE_DEVICE_TABLE(ap, zcrypt_pcicc_ids);
+MODULE_AUTHOR("IBM Corporation");
+MODULE_DESCRIPTION("PCICC Cryptographic Coprocessor device driver, "
+ "Copyright 2001, 2006 IBM Corporation");
+MODULE_LICENSE("GPL");
+#endif
+
+static int zcrypt_pcicc_probe(struct ap_device *ap_dev);
+static void zcrypt_pcicc_remove(struct ap_device *ap_dev);
+static void zcrypt_pcicc_receive(struct ap_device *, struct ap_message *,
+ struct ap_message *);
+
+static struct ap_driver zcrypt_pcicc_driver = {
+ .probe = zcrypt_pcicc_probe,
+ .remove = zcrypt_pcicc_remove,
+ .receive = zcrypt_pcicc_receive,
+ .ids = zcrypt_pcicc_ids,
+};
+
+/**
+ * The following is used to initialize the CPRB passed to the PCICC card
+ * in a type6 message. The 3 fields that must be filled in at execution
+ * time are req_parml, rpl_parml and usage_domain. Note that all three
+ * fields are *little*-endian. Actually, everything about this interface
+ * is ascii/little-endian, since the device has 'Intel inside'.
+ *
+ * The CPRB is followed immediately by the parm block.
+ * The parm block contains:
+ * - function code ('PD' 0x5044 or 'PK' 0x504B)
+ * - rule block (0x0A00 'PKCS-1.2' or 0x0A00 'ZERO-PAD')
+ * - VUD block
+ */
+static struct CPRB static_cprb = {
+ .cprb_len = __constant_cpu_to_le16(0x0070),
+ .cprb_ver_id = 0x41,
+ .func_id = {0x54,0x32},
+ .checkpoint_flag= 0x01,
+ .svr_namel = __constant_cpu_to_le16(0x0008),
+ .svr_name = {'I','C','S','F',' ',' ',' ',' '}
+};
+
+/**
+ * Check the message for PKCS11 padding.
+ */
+static inline int is_PKCS11_padded(unsigned char *buffer, int length)
+{
+ int i;
+ if ((buffer[0] != 0x00) || (buffer[1] != 0x01))
+ return 0;
+ for (i = 2; i < length; i++)
+ if (buffer[i] != 0xFF)
+ break;
+ if (i < 10 || i == length)
+ return 0;
+ if (buffer[i] != 0x00)
+ return 0;
+ return 1;
+}
+
+/**
+ * Check the message for PKCS12 padding.
+ */
+static inline int is_PKCS12_padded(unsigned char *buffer, int length)
+{
+ int i;
+ if ((buffer[0] != 0x00) || (buffer[1] != 0x02))
+ return 0;
+ for (i = 2; i < length; i++)
+ if (buffer[i] == 0x00)
+ break;
+ if ((i < 10) || (i == length))
+ return 0;
+ if (buffer[i] != 0x00)
+ return 0;
+ return 1;
+}
+
+/**
+ * Convert a ICAMEX message to a type6 MEX message.
+ *
+ * @zdev: crypto device pointer
+ * @zreq: crypto request pointer
+ * @mex: pointer to user input data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+static int ICAMEX_msg_to_type6MEX_msg(struct zcrypt_device *zdev,
+ struct ap_message *ap_msg,
+ struct ica_rsa_modexpo *mex)
+{
+ static struct type6_hdr static_type6_hdr = {
+ .type = 0x06,
+ .offset1 = 0x00000058,
+ .agent_id = {0x01,0x00,0x43,0x43,0x41,0x2D,0x41,0x50,
+ 0x50,0x4C,0x20,0x20,0x20,0x01,0x01,0x01},
+ .function_code = {'P','K'},
+ };
+ static struct function_and_rules_block static_pke_function_and_rules ={
+ .function_code = {'P','K'},
+ .ulen = __constant_cpu_to_le16(10),
+ .only_rule = {'P','K','C','S','-','1','.','2'}
+ };
+ struct {
+ struct type6_hdr hdr;
+ struct CPRB cprb;
+ struct function_and_rules_block fr;
+ unsigned short length;
+ char text[0];
+ } __attribute__((packed)) *msg = ap_msg->message;
+ int vud_len, pad_len, size;
+
+ /* VUD.ciphertext */
+ if (copy_from_user(msg->text, mex->inputdata, mex->inputdatalength))
+ return -EFAULT;
+
+ if (is_PKCS11_padded(msg->text, mex->inputdatalength))
+ return -EINVAL;
+
+ /* static message header and f&r */
+ msg->hdr = static_type6_hdr;
+ msg->fr = static_pke_function_and_rules;
+
+ if (is_PKCS12_padded(msg->text, mex->inputdatalength)) {
+ /* strip the padding and adjust the data length */
+ pad_len = strnlen(msg->text + 2, mex->inputdatalength - 2) + 3;
+ if (pad_len <= 9 || pad_len >= mex->inputdatalength)
+ return -ENODEV;
+ vud_len = mex->inputdatalength - pad_len;
+ memmove(msg->text, msg->text + pad_len, vud_len);
+ msg->length = cpu_to_le16(vud_len + 2);
+
+ /* Set up key after the variable length text. */
+ size = zcrypt_type6_mex_key_en(mex, msg->text + vud_len, 0);
+ if (size < 0)
+ return size;
+ size += sizeof(*msg) + vud_len; /* total size of msg */
+ } else {
+ vud_len = mex->inputdatalength;
+ msg->length = cpu_to_le16(2 + vud_len);
+
+ msg->hdr.function_code[1] = 'D';
+ msg->fr.function_code[1] = 'D';
+
+ /* Set up key after the variable length text. */
+ size = zcrypt_type6_mex_key_de(mex, msg->text + vud_len, 0);
+ if (size < 0)
+ return size;
+ size += sizeof(*msg) + vud_len; /* total size of msg */
+ }
+
+ /* message header, cprb and f&r */
+ msg->hdr.ToCardLen1 = (size - sizeof(msg->hdr) + 3) & -4;
+ msg->hdr.FromCardLen1 = PCICC_MAX_RESPONSE_SIZE - sizeof(msg->hdr);
+
+ msg->cprb = static_cprb;
+ msg->cprb.usage_domain[0]= AP_QID_QUEUE(zdev->ap_dev->qid);
+ msg->cprb.req_parml = cpu_to_le16(size - sizeof(msg->hdr) -
+ sizeof(msg->cprb));
+ msg->cprb.rpl_parml = cpu_to_le16(msg->hdr.FromCardLen1);
+
+ ap_msg->length = (size + 3) & -4;
+ return 0;
+}
+
+/**
+ * Convert a ICACRT message to a type6 CRT message.
+ *
+ * @zdev: crypto device pointer
+ * @zreq: crypto request pointer
+ * @crt: pointer to user input data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+static int ICACRT_msg_to_type6CRT_msg(struct zcrypt_device *zdev,
+ struct ap_message *ap_msg,
+ struct ica_rsa_modexpo_crt *crt)
+{
+ static struct type6_hdr static_type6_hdr = {
+ .type = 0x06,
+ .offset1 = 0x00000058,
+ .agent_id = {0x01,0x00,0x43,0x43,0x41,0x2D,0x41,0x50,
+ 0x50,0x4C,0x20,0x20,0x20,0x01,0x01,0x01},
+ .function_code = {'P','D'},
+ };
+ static struct function_and_rules_block static_pkd_function_and_rules ={
+ .function_code = {'P','D'},
+ .ulen = __constant_cpu_to_le16(10),
+ .only_rule = {'P','K','C','S','-','1','.','2'}
+ };
+ struct {
+ struct type6_hdr hdr;
+ struct CPRB cprb;
+ struct function_and_rules_block fr;
+ unsigned short length;
+ char text[0];
+ } __attribute__((packed)) *msg = ap_msg->message;
+ int size;
+
+ /* VUD.ciphertext */
+ msg->length = cpu_to_le16(2 + crt->inputdatalength);
+ if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength))
+ return -EFAULT;
+
+ if (is_PKCS11_padded(msg->text, crt->inputdatalength))
+ return -EINVAL;
+
+ /* Set up key after the variable length text. */
+ size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength, 0);
+ if (size < 0)
+ return size;
+ size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */
+
+ /* message header, cprb and f&r */
+ msg->hdr = static_type6_hdr;
+ msg->hdr.ToCardLen1 = (size - sizeof(msg->hdr) + 3) & -4;
+ msg->hdr.FromCardLen1 = PCICC_MAX_RESPONSE_SIZE - sizeof(msg->hdr);
+
+ msg->cprb = static_cprb;
+ msg->cprb.usage_domain[0] = AP_QID_QUEUE(zdev->ap_dev->qid);
+ msg->cprb.req_parml = msg->cprb.rpl_parml =
+ cpu_to_le16(size - sizeof(msg->hdr) - sizeof(msg->cprb));
+
+ msg->fr = static_pkd_function_and_rules;
+
+ ap_msg->length = (size + 3) & -4;
+ return 0;
+}
+
+/**
+ * Copy results from a type 86 reply message back to user space.
+ *
+ * @zdev: crypto device pointer
+ * @reply: reply AP message.
+ * @data: pointer to user output data
+ * @length: size of user output data
+ *
+ * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error.
+ */
+struct type86_reply {
+ struct type86_hdr hdr;
+ struct type86_fmt2_ext fmt2;
+ struct CPRB cprb;
+ unsigned char pad[4]; /* 4 byte function code/rules block ? */
+ unsigned short length;
+ char text[0];
+} __attribute__((packed));
+
+static int convert_type86(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ char __user *outputdata,
+ unsigned int outputdatalength)
+{
+ static unsigned char static_pad[] = {
+ 0x00,0x02,
+ 0x1B,0x7B,0x5D,0xB5,0x75,0x01,0x3D,0xFD,
+ 0x8D,0xD1,0xC7,0x03,0x2D,0x09,0x23,0x57,
+ 0x89,0x49,0xB9,0x3F,0xBB,0x99,0x41,0x5B,
+ 0x75,0x21,0x7B,0x9D,0x3B,0x6B,0x51,0x39,
+ 0xBB,0x0D,0x35,0xB9,0x89,0x0F,0x93,0xA5,
+ 0x0B,0x47,0xF1,0xD3,0xBB,0xCB,0xF1,0x9D,
+ 0x23,0x73,0x71,0xFF,0xF3,0xF5,0x45,0xFB,
+ 0x61,0x29,0x23,0xFD,0xF1,0x29,0x3F,0x7F,
+ 0x17,0xB7,0x1B,0xA9,0x19,0xBD,0x57,0xA9,
+ 0xD7,0x95,0xA3,0xCB,0xED,0x1D,0xDB,0x45,
+ 0x7D,0x11,0xD1,0x51,0x1B,0xED,0x71,0xE9,
+ 0xB1,0xD1,0xAB,0xAB,0x21,0x2B,0x1B,0x9F,
+ 0x3B,0x9F,0xF7,0xF7,0xBD,0x63,0xEB,0xAD,
+ 0xDF,0xB3,0x6F,0x5B,0xDB,0x8D,0xA9,0x5D,
+ 0xE3,0x7D,0x77,0x49,0x47,0xF5,0xA7,0xFD,
+ 0xAB,0x2F,0x27,0x35,0x77,0xD3,0x49,0xC9,
+ 0x09,0xEB,0xB1,0xF9,0xBF,0x4B,0xCB,0x2B,
+ 0xEB,0xEB,0x05,0xFF,0x7D,0xC7,0x91,0x8B,
+ 0x09,0x83,0xB9,0xB9,0x69,0x33,0x39,0x6B,
+ 0x79,0x75,0x19,0xBF,0xBB,0x07,0x1D,0xBD,
+ 0x29,0xBF,0x39,0x95,0x93,0x1D,0x35,0xC7,
+ 0xC9,0x4D,0xE5,0x97,0x0B,0x43,0x9B,0xF1,
+ 0x16,0x93,0x03,0x1F,0xA5,0xFB,0xDB,0xF3,
+ 0x27,0x4F,0x27,0x61,0x05,0x1F,0xB9,0x23,
+ 0x2F,0xC3,0x81,0xA9,0x23,0x71,0x55,0x55,
+ 0xEB,0xED,0x41,0xE5,0xF3,0x11,0xF1,0x43,
+ 0x69,0x03,0xBD,0x0B,0x37,0x0F,0x51,0x8F,
+ 0x0B,0xB5,0x89,0x5B,0x67,0xA9,0xD9,0x4F,
+ 0x01,0xF9,0x21,0x77,0x37,0x73,0x79,0xC5,
+ 0x7F,0x51,0xC1,0xCF,0x97,0xA1,0x75,0xAD,
+ 0x35,0x9D,0xD3,0xD3,0xA7,0x9D,0x5D,0x41,
+ 0x6F,0x65,0x1B,0xCF,0xA9,0x87,0x91,0x09
+ };
+ struct type86_reply *msg = reply->message;
+ unsigned short service_rc, service_rs;
+ unsigned int reply_len, pad_len;
+ char *data;
+
+ service_rc = le16_to_cpu(msg->cprb.ccp_rtcode);
+ if (unlikely(service_rc != 0)) {
+ service_rs = le16_to_cpu(msg->cprb.ccp_rscode);
+ if (service_rc == 8 && service_rs == 66) {
+ PDEBUG("Bad block format on PCICC\n");
+ return -EINVAL;
+ }
+ if (service_rc == 8 && service_rs == 65) {
+ PDEBUG("Probably an even modulus on PCICC\n");
+ return -EINVAL;
+ }
+ if (service_rc == 8 && service_rs == 770) {
+ PDEBUG("Invalid key length on PCICC\n");
+ zdev->max_mod_size = PCICC_MAX_MOD_SIZE_OLD;
+ return -EAGAIN;
+ }
+ if (service_rc == 8 && service_rs == 783) {
+ PDEBUG("Extended bitlengths not enabled on PCICC\n");
+ zdev->max_mod_size = PCICC_MAX_MOD_SIZE_OLD;
+ return -EAGAIN;
+ }
+ PRINTK("Unknown service rc/rs (PCICC): %d/%d\n",
+ service_rc, service_rs);
+ zdev->online = 0;
+ return -EAGAIN; /* repeat the request on a different device. */
+ }
+ data = msg->text;
+ reply_len = le16_to_cpu(msg->length) - 2;
+ if (reply_len > outputdatalength)
+ return -EINVAL;
+ /**
+ * For all encipher requests, the length of the ciphertext (reply_len)
+ * will always equal the modulus length. For MEX decipher requests
+ * the output needs to get padded. Minimum pad size is 10.
+ *
+ * Currently, the cases where padding will be added is for:
+ * - PCIXCC_MCL2 using a CRT form token (since PKD didn't support
+ * ZERO-PAD and CRT is only supported for PKD requests)
+ * - PCICC, always
+ */
+ pad_len = outputdatalength - reply_len;
+ if (pad_len > 0) {
+ if (pad_len < 10)
+ return -EINVAL;
+ /* 'restore' padding left in the PCICC/PCIXCC card. */
+ if (copy_to_user(outputdata, static_pad, pad_len - 1))
+ return -EFAULT;
+ if (put_user(0, outputdata + pad_len - 1))
+ return -EFAULT;
+ }
+ /* Copy the crypto response to user space. */
+ if (copy_to_user(outputdata + pad_len, data, reply_len))
+ return -EFAULT;
+ return 0;
+}
+
+static int convert_response(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ char __user *outputdata,
+ unsigned int outputdatalength)
+{
+ struct type86_reply *msg = reply->message;
+
+ /* Response type byte is the second byte in the response. */
+ switch (msg->hdr.type) {
+ case TYPE82_RSP_CODE:
+ case TYPE88_RSP_CODE:
+ return convert_error(zdev, reply);
+ case TYPE86_RSP_CODE:
+ if (msg->hdr.reply_code)
+ return convert_error(zdev, reply);
+ if (msg->cprb.cprb_ver_id == 0x01)
+ return convert_type86(zdev, reply,
+ outputdata, outputdatalength);
+ /* no break, incorrect cprb version is an unknown response */
+ default: /* Unknown response type, this should NEVER EVER happen */
+ PRINTK("Unrecognized Message Header: %08x%08x\n",
+ *(unsigned int *) reply->message,
+ *(unsigned int *) (reply->message+4));
+ zdev->online = 0;
+ return -EAGAIN; /* repeat the request on a different device. */
+ }
+}
+
+/**
+ * This function is called from the AP bus code after a crypto request
+ * "msg" has finished with the reply message "reply".
+ * It is called from tasklet context.
+ * @ap_dev: pointer to the AP device
+ * @msg: pointer to the AP message
+ * @reply: pointer to the AP reply message
+ */
+static void zcrypt_pcicc_receive(struct ap_device *ap_dev,
+ struct ap_message *msg,
+ struct ap_message *reply)
+{
+ static struct error_hdr error_reply = {
+ .type = TYPE82_RSP_CODE,
+ .reply_code = REP82_ERROR_MACHINE_FAILURE,
+ };
+ struct type86_reply *t86r = reply->message;
+ int length;
+
+ /* Copy the reply message to the request message buffer. */
+ if (IS_ERR(reply))
+ memcpy(msg->message, &error_reply, sizeof(error_reply));
+ else if (t86r->hdr.type == TYPE86_RSP_CODE &&
+ t86r->cprb.cprb_ver_id == 0x01) {
+ length = sizeof(struct type86_reply) + t86r->length - 2;
+ length = min(PCICC_MAX_RESPONSE_SIZE, length);
+ memcpy(msg->message, reply->message, length);
+ } else
+ memcpy(msg->message, reply->message, sizeof error_reply);
+ complete((struct completion *) msg->private);
+}
+
+static atomic_t zcrypt_step = ATOMIC_INIT(0);
+
+/**
+ * The request distributor calls this function if it picked the PCICC
+ * device to handle a modexpo request.
+ * @zdev: pointer to zcrypt_device structure that identifies the
+ * PCICC device to the request distributor
+ * @mex: pointer to the modexpo request buffer
+ */
+static long zcrypt_pcicc_modexpo(struct zcrypt_device *zdev,
+ struct ica_rsa_modexpo *mex)
+{
+ struct ap_message ap_msg;
+ struct completion work;
+ int rc;
+
+ ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!ap_msg.message)
+ return -ENOMEM;
+ ap_msg.length = PAGE_SIZE;
+ ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
+ atomic_inc_return(&zcrypt_step);
+ ap_msg.private = &work;
+ rc = ICAMEX_msg_to_type6MEX_msg(zdev, &ap_msg, mex);
+ if (rc)
+ goto out_free;
+ init_completion(&work);
+ ap_queue_message(zdev->ap_dev, &ap_msg);
+ rc = wait_for_completion_interruptible_timeout(
+ &work, PCICC_CLEANUP_TIME);
+ if (rc > 0)
+ rc = convert_response(zdev, &ap_msg, mex->outputdata,
+ mex->outputdatalength);
+ else {
+ /* Signal pending or message timed out. */
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
+ if (rc == 0)
+ /* Message timed out. */
+ rc = -ETIME;
+ }
+out_free:
+ free_page((unsigned long) ap_msg.message);
+ return rc;
+}
+
+/**
+ * The request distributor calls this function if it picked the PCICC
+ * device to handle a modexpo_crt request.
+ * @zdev: pointer to zcrypt_device structure that identifies the
+ * PCICC device to the request distributor
+ * @crt: pointer to the modexpoc_crt request buffer
+ */
+static long zcrypt_pcicc_modexpo_crt(struct zcrypt_device *zdev,
+ struct ica_rsa_modexpo_crt *crt)
+{
+ struct ap_message ap_msg;
+ struct completion work;
+ int rc;
+
+ ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!ap_msg.message)
+ return -ENOMEM;
+ ap_msg.length = PAGE_SIZE;
+ ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
+ atomic_inc_return(&zcrypt_step);
+ ap_msg.private = &work;
+ rc = ICACRT_msg_to_type6CRT_msg(zdev, &ap_msg, crt);
+ if (rc)
+ goto out_free;
+ init_completion(&work);
+ ap_queue_message(zdev->ap_dev, &ap_msg);
+ rc = wait_for_completion_interruptible_timeout(
+ &work, PCICC_CLEANUP_TIME);
+ if (rc > 0)
+ rc = convert_response(zdev, &ap_msg, crt->outputdata,
+ crt->outputdatalength);
+ else {
+ /* Signal pending or message timed out. */
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
+ if (rc == 0)
+ /* Message timed out. */
+ rc = -ETIME;
+ }
+out_free:
+ free_page((unsigned long) ap_msg.message);
+ return rc;
+}
+
+/**
+ * The crypto operations for a PCICC card.
+ */
+static struct zcrypt_ops zcrypt_pcicc_ops = {
+ .rsa_modexpo = zcrypt_pcicc_modexpo,
+ .rsa_modexpo_crt = zcrypt_pcicc_modexpo_crt,
+};
+
+/**
+ * Probe function for PCICC cards. It always accepts the AP device
+ * since the bus_match already checked the hardware type.
+ * @ap_dev: pointer to the AP device.
+ */
+static int zcrypt_pcicc_probe(struct ap_device *ap_dev)
+{
+ struct zcrypt_device *zdev;
+ int rc;
+
+ zdev = zcrypt_device_alloc(PCICC_MAX_RESPONSE_SIZE);
+ if (!zdev)
+ return -ENOMEM;
+ zdev->ap_dev = ap_dev;
+ zdev->ops = &zcrypt_pcicc_ops;
+ zdev->online = 1;
+ zdev->user_space_type = ZCRYPT_PCICC;
+ zdev->type_string = "PCICC";
+ zdev->min_mod_size = PCICC_MIN_MOD_SIZE;
+ zdev->max_mod_size = PCICC_MAX_MOD_SIZE;
+ zdev->speed_rating = PCICC_SPEED_RATING;
+ ap_dev->reply = &zdev->reply;
+ ap_dev->private = zdev;
+ rc = zcrypt_device_register(zdev);
+ if (rc)
+ goto out_free;
+ return 0;
+
+ out_free:
+ ap_dev->private = NULL;
+ zcrypt_device_free(zdev);
+ return rc;
+}
+
+/**
+ * This is called to remove the extended PCICC driver information
+ * if an AP device is removed.
+ */
+static void zcrypt_pcicc_remove(struct ap_device *ap_dev)
+{
+ struct zcrypt_device *zdev = ap_dev->private;
+
+ zcrypt_device_unregister(zdev);
+}
+
+int __init zcrypt_pcicc_init(void)
+{
+ return ap_driver_register(&zcrypt_pcicc_driver, THIS_MODULE, "pcicc");
+}
+
+void zcrypt_pcicc_exit(void)
+{
+ ap_driver_unregister(&zcrypt_pcicc_driver);
+}
+
+#ifndef CONFIG_ZCRYPT_MONOLITHIC
+module_init(zcrypt_pcicc_init);
+module_exit(zcrypt_pcicc_exit);
+#endif
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_pcicc.h
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _ZCRYPT_PCICC_H_
+#define _ZCRYPT_PCICC_H_
+
+/**
+ * The type 6 message family is associated with PCICC or PCIXCC cards.
+ *
+ * It contains a message header followed by a CPRB, both of which
+ * are described below.
+ *
+ * Note that all reserved fields must be zeroes.
+ */
+struct type6_hdr {
+ unsigned char reserved1; /* 0x00 */
+ unsigned char type; /* 0x06 */
+ unsigned char reserved2[2]; /* 0x0000 */
+ unsigned char right[4]; /* 0x00000000 */
+ unsigned char reserved3[2]; /* 0x0000 */
+ unsigned char reserved4[2]; /* 0x0000 */
+ unsigned char apfs[4]; /* 0x00000000 */
+ unsigned int offset1; /* 0x00000058 (offset to CPRB) */
+ unsigned int offset2; /* 0x00000000 */
+ unsigned int offset3; /* 0x00000000 */
+ unsigned int offset4; /* 0x00000000 */
+ unsigned char agent_id[16]; /* PCICC: */
+ /* 0x0100 */
+ /* 0x4343412d4150504c202020 */
+ /* 0x010101 */
+ /* PCIXCC: */
+ /* 0x4341000000000000 */
+ /* 0x0000000000000000 */
+ unsigned char rqid[2]; /* rqid. internal to 603 */
+ unsigned char reserved5[2]; /* 0x0000 */
+ unsigned char function_code[2]; /* for PKD, 0x5044 (ascii 'PD') */
+ unsigned char reserved6[2]; /* 0x0000 */
+ unsigned int ToCardLen1; /* (request CPRB len + 3) & -4 */
+ unsigned int ToCardLen2; /* db len 0x00000000 for PKD */
+ unsigned int ToCardLen3; /* 0x00000000 */
+ unsigned int ToCardLen4; /* 0x00000000 */
+ unsigned int FromCardLen1; /* response buffer length */
+ unsigned int FromCardLen2; /* db len 0x00000000 for PKD */
+ unsigned int FromCardLen3; /* 0x00000000 */
+ unsigned int FromCardLen4; /* 0x00000000 */
+} __attribute__((packed));
+
+/**
+ * CPRB
+ * Note that all shorts, ints and longs are little-endian.
+ * All pointer fields are 32-bits long, and mean nothing
+ *
+ * A request CPRB is followed by a request_parameter_block.
+ *
+ * The request (or reply) parameter block is organized thus:
+ * function code
+ * VUD block
+ * key block
+ */
+struct CPRB {
+ unsigned short cprb_len; /* CPRB length */
+ unsigned char cprb_ver_id; /* CPRB version id. */
+ unsigned char pad_000; /* Alignment pad byte. */
+ unsigned char srpi_rtcode[4]; /* SRPI return code LELONG */
+ unsigned char srpi_verb; /* SRPI verb type */
+ unsigned char flags; /* flags */
+ unsigned char func_id[2]; /* function id */
+ unsigned char checkpoint_flag; /* */
+ unsigned char resv2; /* reserved */
+ unsigned short req_parml; /* request parameter buffer */
+ /* length 16-bit little endian */
+ unsigned char req_parmp[4]; /* request parameter buffer *
+ * pointer (means nothing: the *
+ * parameter buffer follows *
+ * the CPRB). */
+ unsigned char req_datal[4]; /* request data buffer */
+ /* length ULELONG */
+ unsigned char req_datap[4]; /* request data buffer */
+ /* pointer */
+ unsigned short rpl_parml; /* reply parameter buffer */
+ /* length 16-bit little endian */
+ unsigned char pad_001[2]; /* Alignment pad bytes. ULESHORT */
+ unsigned char rpl_parmp[4]; /* reply parameter buffer *
+ * pointer (means nothing: the *
+ * parameter buffer follows *
+ * the CPRB). */
+ unsigned char rpl_datal[4]; /* reply data buffer len ULELONG */
+ unsigned char rpl_datap[4]; /* reply data buffer */
+ /* pointer */
+ unsigned short ccp_rscode; /* server reason code ULESHORT */
+ unsigned short ccp_rtcode; /* server return code ULESHORT */
+ unsigned char repd_parml[2]; /* replied parameter len ULESHORT*/
+ unsigned char mac_data_len[2]; /* Mac Data Length ULESHORT */
+ unsigned char repd_datal[4]; /* replied data length ULELONG */
+ unsigned char req_pc[2]; /* PC identifier */
+ unsigned char res_origin[8]; /* resource origin */
+ unsigned char mac_value[8]; /* Mac Value */
+ unsigned char logon_id[8]; /* Logon Identifier */
+ unsigned char usage_domain[2]; /* cdx */
+ unsigned char resv3[18]; /* reserved for requestor */
+ unsigned short svr_namel; /* server name length ULESHORT */
+ unsigned char svr_name[8]; /* server name */
+} __attribute__((packed));
+
+/**
+ * The type 86 message family is associated with PCICC and PCIXCC cards.
+ *
+ * It contains a message header followed by a CPRB. The CPRB is
+ * the same as the request CPRB, which is described above.
+ *
+ * If format is 1, an error condition exists and no data beyond
+ * the 8-byte message header is of interest.
+ *
+ * The non-error message is shown below.
+ *
+ * Note that all reserved fields must be zeroes.
+ */
+struct type86_hdr {
+ unsigned char reserved1; /* 0x00 */
+ unsigned char type; /* 0x86 */
+ unsigned char format; /* 0x01 (error) or 0x02 (ok) */
+ unsigned char reserved2; /* 0x00 */
+ unsigned char reply_code; /* reply code (see above) */
+ unsigned char reserved3[3]; /* 0x000000 */
+} __attribute__((packed));
+
+#define TYPE86_RSP_CODE 0x86
+#define TYPE86_FMT2 0x02
+
+struct type86_fmt2_ext {
+ unsigned char reserved[4]; /* 0x00000000 */
+ unsigned char apfs[4]; /* final status */
+ unsigned int count1; /* length of CPRB + parameters */
+ unsigned int offset1; /* offset to CPRB */
+ unsigned int count2; /* 0x00000000 */
+ unsigned int offset2; /* db offset 0x00000000 for PKD */
+ unsigned int count3; /* 0x00000000 */
+ unsigned int offset3; /* 0x00000000 */
+ unsigned int count4; /* 0x00000000 */
+ unsigned int offset4; /* 0x00000000 */
+} __attribute__((packed));
+
+struct function_and_rules_block {
+ unsigned char function_code[2];
+ unsigned short ulen;
+ unsigned char only_rule[8];
+} __attribute__((packed));
+
+int zcrypt_pcicc_init(void);
+void zcrypt_pcicc_exit(void);
+
+#endif /* _ZCRYPT_PCICC_H_ */
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_pcixcc.c
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ * Ralph Wuerthner <rwuerthn@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <asm/atomic.h>
+#include <asm/uaccess.h>
+
+#include "ap_bus.h"
+#include "zcrypt_api.h"
+#include "zcrypt_error.h"
+#include "zcrypt_pcicc.h"
+#include "zcrypt_pcixcc.h"
+#include "zcrypt_cca_key.h"
+
+#define PCIXCC_MIN_MOD_SIZE 16 /* 128 bits */
+#define PCIXCC_MIN_MOD_SIZE_OLD 64 /* 512 bits */
+#define PCIXCC_MAX_MOD_SIZE 256 /* 2048 bits */
+
+#define PCIXCC_MCL2_SPEED_RATING 7870 /* FIXME: needs finetuning */
+#define PCIXCC_MCL3_SPEED_RATING 7870
+#define CEX2C_SPEED_RATING 8540
+
+#define PCIXCC_MAX_ICA_MESSAGE_SIZE 0x77c /* max size type6 v2 crt message */
+#define PCIXCC_MAX_ICA_RESPONSE_SIZE 0x77c /* max size type86 v2 reply */
+
+#define PCIXCC_MAX_XCRB_MESSAGE_SIZE (12*1024)
+#define PCIXCC_MAX_XCRB_RESPONSE_SIZE PCIXCC_MAX_XCRB_MESSAGE_SIZE
+#define PCIXCC_MAX_XCRB_DATA_SIZE (11*1024)
+#define PCIXCC_MAX_XCRB_REPLY_SIZE (5*1024)
+
+#define PCIXCC_MAX_RESPONSE_SIZE PCIXCC_MAX_XCRB_RESPONSE_SIZE
+
+#define PCIXCC_CLEANUP_TIME (15*HZ)
+
+#define CEIL4(x) ((((x)+3)/4)*4)
+
+struct response_type {
+ struct completion work;
+ int type;
+};
+#define PCIXCC_RESPONSE_TYPE_ICA 0
+#define PCIXCC_RESPONSE_TYPE_XCRB 1
+
+static struct ap_device_id zcrypt_pcixcc_ids[] = {
+ { AP_DEVICE(AP_DEVICE_TYPE_PCIXCC) },
+ { AP_DEVICE(AP_DEVICE_TYPE_CEX2C) },
+ { /* end of list */ },
+};
+
+#ifndef CONFIG_ZCRYPT_MONOLITHIC
+MODULE_DEVICE_TABLE(ap, zcrypt_pcixcc_ids);
+MODULE_AUTHOR("IBM Corporation");
+MODULE_DESCRIPTION("PCIXCC Cryptographic Coprocessor device driver, "
+ "Copyright 2001, 2006 IBM Corporation");
+MODULE_LICENSE("GPL");
+#endif
+
+static int zcrypt_pcixcc_probe(struct ap_device *ap_dev);
+static void zcrypt_pcixcc_remove(struct ap_device *ap_dev);
+static void zcrypt_pcixcc_receive(struct ap_device *, struct ap_message *,
+ struct ap_message *);
+
+static struct ap_driver zcrypt_pcixcc_driver = {
+ .probe = zcrypt_pcixcc_probe,
+ .remove = zcrypt_pcixcc_remove,
+ .receive = zcrypt_pcixcc_receive,
+ .ids = zcrypt_pcixcc_ids,
+};
+
+/**
+ * The following is used to initialize the CPRBX passed to the PCIXCC/CEX2C
+ * card in a type6 message. The 3 fields that must be filled in at execution
+ * time are req_parml, rpl_parml and usage_domain.
+ * Everything about this interface is ascii/big-endian, since the
+ * device does *not* have 'Intel inside'.
+ *
+ * The CPRBX is followed immediately by the parm block.
+ * The parm block contains:
+ * - function code ('PD' 0x5044 or 'PK' 0x504B)
+ * - rule block (one of:)
+ * + 0x000A 'PKCS-1.2' (MCL2 'PD')
+ * + 0x000A 'ZERO-PAD' (MCL2 'PK')
+ * + 0x000A 'ZERO-PAD' (MCL3 'PD' or CEX2C 'PD')
+ * + 0x000A 'MRP ' (MCL3 'PK' or CEX2C 'PK')
+ * - VUD block
+ */
+static struct CPRBX static_cprbx = {
+ .cprb_len = 0x00DC,
+ .cprb_ver_id = 0x02,
+ .func_id = {0x54,0x32},
+};
+
+/**
+ * Convert a ICAMEX message to a type6 MEX message.
+ *
+ * @zdev: crypto device pointer
+ * @ap_msg: pointer to AP message
+ * @mex: pointer to user input data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_device *zdev,
+ struct ap_message *ap_msg,
+ struct ica_rsa_modexpo *mex)
+{
+ static struct type6_hdr static_type6_hdrX = {
+ .type = 0x06,
+ .offset1 = 0x00000058,
+ .agent_id = {'C','A',},
+ .function_code = {'P','K'},
+ };
+ static struct function_and_rules_block static_pke_fnr = {
+ .function_code = {'P','K'},
+ .ulen = 10,
+ .only_rule = {'M','R','P',' ',' ',' ',' ',' '}
+ };
+ static struct function_and_rules_block static_pke_fnr_MCL2 = {
+ .function_code = {'P','K'},
+ .ulen = 10,
+ .only_rule = {'Z','E','R','O','-','P','A','D'}
+ };
+ struct {
+ struct type6_hdr hdr;
+ struct CPRBX cprbx;
+ struct function_and_rules_block fr;
+ unsigned short length;
+ char text[0];
+ } __attribute__((packed)) *msg = ap_msg->message;
+ int size;
+
+ /* VUD.ciphertext */
+ msg->length = mex->inputdatalength + 2;
+ if (copy_from_user(msg->text, mex->inputdata, mex->inputdatalength))
+ return -EFAULT;
+
+ /* Set up key which is located after the variable length text. */
+ size = zcrypt_type6_mex_key_en(mex, msg->text+mex->inputdatalength, 1);
+ if (size < 0)
+ return size;
+ size += sizeof(*msg) + mex->inputdatalength;
+
+ /* message header, cprbx and f&r */
+ msg->hdr = static_type6_hdrX;
+ msg->hdr.ToCardLen1 = size - sizeof(msg->hdr);
+ msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr);
+
+ msg->cprbx = static_cprbx;
+ msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid);
+ msg->cprbx.rpl_msgbl = msg->hdr.FromCardLen1;
+
+ msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ?
+ static_pke_fnr_MCL2 : static_pke_fnr;
+
+ msg->cprbx.req_parml = size - sizeof(msg->hdr) - sizeof(msg->cprbx);
+
+ ap_msg->length = size;
+ return 0;
+}
+
+/**
+ * Convert a ICACRT message to a type6 CRT message.
+ *
+ * @zdev: crypto device pointer
+ * @ap_msg: pointer to AP message
+ * @crt: pointer to user input data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_device *zdev,
+ struct ap_message *ap_msg,
+ struct ica_rsa_modexpo_crt *crt)
+{
+ static struct type6_hdr static_type6_hdrX = {
+ .type = 0x06,
+ .offset1 = 0x00000058,
+ .agent_id = {'C','A',},
+ .function_code = {'P','D'},
+ };
+ static struct function_and_rules_block static_pkd_fnr = {
+ .function_code = {'P','D'},
+ .ulen = 10,
+ .only_rule = {'Z','E','R','O','-','P','A','D'}
+ };
+
+ static struct function_and_rules_block static_pkd_fnr_MCL2 = {
+ .function_code = {'P','D'},
+ .ulen = 10,
+ .only_rule = {'P','K','C','S','-','1','.','2'}
+ };
+ struct {
+ struct type6_hdr hdr;
+ struct CPRBX cprbx;
+ struct function_and_rules_block fr;
+ unsigned short length;
+ char text[0];
+ } __attribute__((packed)) *msg = ap_msg->message;
+ int size;
+
+ /* VUD.ciphertext */
+ msg->length = crt->inputdatalength + 2;
+ if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength))
+ return -EFAULT;
+
+ /* Set up key which is located after the variable length text. */
+ size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength, 1);
+ if (size < 0)
+ return size;
+ size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */
+
+ /* message header, cprbx and f&r */
+ msg->hdr = static_type6_hdrX;
+ msg->hdr.ToCardLen1 = size - sizeof(msg->hdr);
+ msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr);
+
+ msg->cprbx = static_cprbx;
+ msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid);
+ msg->cprbx.req_parml = msg->cprbx.rpl_msgbl =
+ size - sizeof(msg->hdr) - sizeof(msg->cprbx);
+
+ msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ?
+ static_pkd_fnr_MCL2 : static_pkd_fnr;
+
+ ap_msg->length = size;
+ return 0;
+}
+
+/**
+ * Convert a XCRB message to a type6 CPRB message.
+ *
+ * @zdev: crypto device pointer
+ * @ap_msg: pointer to AP message
+ * @xcRB: pointer to user input data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+struct type86_fmt2_msg {
+ struct type86_hdr hdr;
+ struct type86_fmt2_ext fmt2;
+} __attribute__((packed));
+
+static int XCRB_msg_to_type6CPRB_msgX(struct zcrypt_device *zdev,
+ struct ap_message *ap_msg,
+ struct ica_xcRB *xcRB)
+{
+ static struct type6_hdr static_type6_hdrX = {
+ .type = 0x06,
+ .offset1 = 0x00000058,
+ };
+ struct {
+ struct type6_hdr hdr;
+ struct ica_CPRBX cprbx;
+ } __attribute__((packed)) *msg = ap_msg->message;
+
+ int rcblen = CEIL4(xcRB->request_control_blk_length);
+ int replylen;
+ char *req_data = ap_msg->message + sizeof(struct type6_hdr) + rcblen;
+ char *function_code;
+
+ /* length checks */
+ ap_msg->length = sizeof(struct type6_hdr) +
+ CEIL4(xcRB->request_control_blk_length) +
+ xcRB->request_data_length;
+ if (ap_msg->length > PCIXCC_MAX_XCRB_MESSAGE_SIZE) {
+ PRINTK("Combined message is too large (%ld/%d/%d).\n",
+ sizeof(struct type6_hdr),
+ xcRB->request_control_blk_length,
+ xcRB->request_data_length);
+ return -EFAULT;
+ }
+ if (CEIL4(xcRB->reply_control_blk_length) >
+ PCIXCC_MAX_XCRB_REPLY_SIZE) {
+ PDEBUG("Reply CPRB length is too large (%d).\n",
+ xcRB->request_control_blk_length);
+ return -EFAULT;
+ }
+ if (CEIL4(xcRB->reply_data_length) > PCIXCC_MAX_XCRB_DATA_SIZE) {
+ PDEBUG("Reply data block length is too large (%d).\n",
+ xcRB->reply_data_length);
+ return -EFAULT;
+ }
+ replylen = CEIL4(xcRB->reply_control_blk_length) +
+ CEIL4(xcRB->reply_data_length) +
+ sizeof(struct type86_fmt2_msg);
+ if (replylen > PCIXCC_MAX_XCRB_RESPONSE_SIZE) {
+ PDEBUG("Reply CPRB + data block > PCIXCC_MAX_XCRB_RESPONSE_SIZE"
+ " (%d/%d/%d).\n",
+ sizeof(struct type86_fmt2_msg),
+ xcRB->reply_control_blk_length,
+ xcRB->reply_data_length);
+ xcRB->reply_control_blk_length = PCIXCC_MAX_XCRB_RESPONSE_SIZE -
+ (sizeof(struct type86_fmt2_msg) +
+ CEIL4(xcRB->reply_data_length));
+ PDEBUG("Capping Reply CPRB length at %d\n",
+ xcRB->reply_control_blk_length);
+ }
+
+ /* prepare type6 header */
+ msg->hdr = static_type6_hdrX;
+ memcpy(msg->hdr.agent_id , &(xcRB->agent_ID), sizeof(xcRB->agent_ID));
+ msg->hdr.ToCardLen1 = xcRB->request_control_blk_length;
+ if (xcRB->request_data_length) {
+ msg->hdr.offset2 = msg->hdr.offset1 + rcblen;
+ msg->hdr.ToCardLen2 = xcRB->request_data_length;
+ }
+ msg->hdr.FromCardLen1 = xcRB->reply_control_blk_length;
+ msg->hdr.FromCardLen2 = xcRB->reply_data_length;
+
+ /* prepare CPRB */
+ if (copy_from_user(&(msg->cprbx), xcRB->request_control_blk_addr,
+ xcRB->request_control_blk_length))
+ return -EFAULT;
+ if (msg->cprbx.cprb_len + sizeof(msg->hdr.function_code) >
+ xcRB->request_control_blk_length) {
+ PDEBUG("cprb_len too large (%d/%d)\n", msg->cprbx.cprb_len,
+ xcRB->request_control_blk_length);
+ return -EFAULT;
+ }
+ function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len;
+ memcpy(msg->hdr.function_code, function_code, sizeof(msg->hdr.function_code));
+
+ /* copy data block */
+ if (xcRB->request_data_length &&
+ copy_from_user(req_data, xcRB->request_data_address,
+ xcRB->request_data_length))
+ return -EFAULT;
+ return 0;
+}
+
+/**
+ * Copy results from a type 86 ICA reply message back to user space.
+ *
+ * @zdev: crypto device pointer
+ * @reply: reply AP message.
+ * @data: pointer to user output data
+ * @length: size of user output data
+ *
+ * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error.
+ */
+struct type86x_reply {
+ struct type86_hdr hdr;
+ struct type86_fmt2_ext fmt2;
+ struct CPRBX cprbx;
+ unsigned char pad[4]; /* 4 byte function code/rules block ? */
+ unsigned short length;
+ char text[0];
+} __attribute__((packed));
+
+static int convert_type86_ica(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ char __user *outputdata,
+ unsigned int outputdatalength)
+{
+ static unsigned char static_pad[] = {
+ 0x00,0x02,
+ 0x1B,0x7B,0x5D,0xB5,0x75,0x01,0x3D,0xFD,
+ 0x8D,0xD1,0xC7,0x03,0x2D,0x09,0x23,0x57,
+ 0x89,0x49,0xB9,0x3F,0xBB,0x99,0x41,0x5B,
+ 0x75,0x21,0x7B,0x9D,0x3B,0x6B,0x51,0x39,
+ 0xBB,0x0D,0x35,0xB9,0x89,0x0F,0x93,0xA5,
+ 0x0B,0x47,0xF1,0xD3,0xBB,0xCB,0xF1,0x9D,
+ 0x23,0x73,0x71,0xFF,0xF3,0xF5,0x45,0xFB,
+ 0x61,0x29,0x23,0xFD,0xF1,0x29,0x3F,0x7F,
+ 0x17,0xB7,0x1B,0xA9,0x19,0xBD,0x57,0xA9,
+ 0xD7,0x95,0xA3,0xCB,0xED,0x1D,0xDB,0x45,
+ 0x7D,0x11,0xD1,0x51,0x1B,0xED,0x71,0xE9,
+ 0xB1,0xD1,0xAB,0xAB,0x21,0x2B,0x1B,0x9F,
+ 0x3B,0x9F,0xF7,0xF7,0xBD,0x63,0xEB,0xAD,
+ 0xDF,0xB3,0x6F,0x5B,0xDB,0x8D,0xA9,0x5D,
+ 0xE3,0x7D,0x77,0x49,0x47,0xF5,0xA7,0xFD,
+ 0xAB,0x2F,0x27,0x35,0x77,0xD3,0x49,0xC9,
+ 0x09,0xEB,0xB1,0xF9,0xBF,0x4B,0xCB,0x2B,
+ 0xEB,0xEB,0x05,0xFF,0x7D,0xC7,0x91,0x8B,
+ 0x09,0x83,0xB9,0xB9,0x69,0x33,0x39,0x6B,
+ 0x79,0x75,0x19,0xBF,0xBB,0x07,0x1D,0xBD,
+ 0x29,0xBF,0x39,0x95,0x93,0x1D,0x35,0xC7,
+ 0xC9,0x4D,0xE5,0x97,0x0B,0x43,0x9B,0xF1,
+ 0x16,0x93,0x03,0x1F,0xA5,0xFB,0xDB,0xF3,
+ 0x27,0x4F,0x27,0x61,0x05,0x1F,0xB9,0x23,
+ 0x2F,0xC3,0x81,0xA9,0x23,0x71,0x55,0x55,
+ 0xEB,0xED,0x41,0xE5,0xF3,0x11,0xF1,0x43,
+ 0x69,0x03,0xBD,0x0B,0x37,0x0F,0x51,0x8F,
+ 0x0B,0xB5,0x89,0x5B,0x67,0xA9,0xD9,0x4F,
+ 0x01,0xF9,0x21,0x77,0x37,0x73,0x79,0xC5,
+ 0x7F,0x51,0xC1,0xCF,0x97,0xA1,0x75,0xAD,
+ 0x35,0x9D,0xD3,0xD3,0xA7,0x9D,0x5D,0x41,
+ 0x6F,0x65,0x1B,0xCF,0xA9,0x87,0x91,0x09
+ };
+ struct type86x_reply *msg = reply->message;
+ unsigned short service_rc, service_rs;
+ unsigned int reply_len, pad_len;
+ char *data;
+
+ service_rc = msg->cprbx.ccp_rtcode;
+ if (unlikely(service_rc != 0)) {
+ service_rs = msg->cprbx.ccp_rscode;
+ if (service_rc == 8 && service_rs == 66) {
+ PDEBUG("Bad block format on PCIXCC/CEX2C\n");
+ return -EINVAL;
+ }
+ if (service_rc == 8 && service_rs == 65) {
+ PDEBUG("Probably an even modulus on PCIXCC/CEX2C\n");
+ return -EINVAL;
+ }
+ if (service_rc == 8 && service_rs == 770) {
+ PDEBUG("Invalid key length on PCIXCC/CEX2C\n");
+ zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD;
+ return -EAGAIN;
+ }
+ if (service_rc == 8 && service_rs == 783) {
+ PDEBUG("Extended bitlengths not enabled on PCIXCC/CEX2C\n");
+ zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD;
+ return -EAGAIN;
+ }
+ PRINTK("Unknown service rc/rs (PCIXCC/CEX2C): %d/%d\n",
+ service_rc, service_rs);
+ zdev->online = 0;
+ return -EAGAIN; /* repeat the request on a different device. */
+ }
+ data = msg->text;
+ reply_len = msg->length - 2;
+ if (reply_len > outputdatalength)
+ return -EINVAL;
+ /**
+ * For all encipher requests, the length of the ciphertext (reply_len)
+ * will always equal the modulus length. For MEX decipher requests
+ * the output needs to get padded. Minimum pad size is 10.
+ *
+ * Currently, the cases where padding will be added is for:
+ * - PCIXCC_MCL2 using a CRT form token (since PKD didn't support
+ * ZERO-PAD and CRT is only supported for PKD requests)
+ * - PCICC, always
+ */
+ pad_len = outputdatalength - reply_len;
+ if (pad_len > 0) {
+ if (pad_len < 10)
+ return -EINVAL;
+ /* 'restore' padding left in the PCICC/PCIXCC card. */
+ if (copy_to_user(outputdata, static_pad, pad_len - 1))
+ return -EFAULT;
+ if (put_user(0, outputdata + pad_len - 1))
+ return -EFAULT;
+ }
+ /* Copy the crypto response to user space. */
+ if (copy_to_user(outputdata + pad_len, data, reply_len))
+ return -EFAULT;
+ return 0;
+}
+
+/**
+ * Copy results from a type 86 XCRB reply message back to user space.
+ *
+ * @zdev: crypto device pointer
+ * @reply: reply AP message.
+ * @xcRB: pointer to XCRB
+ *
+ * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error.
+ */
+static int convert_type86_xcrb(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ struct ica_xcRB *xcRB)
+{
+ struct type86_fmt2_msg *msg = reply->message;
+ char *data = reply->message;
+
+ /* Copy CPRB to user */
+ if (copy_to_user(xcRB->reply_control_blk_addr,
+ data + msg->fmt2.offset1, msg->fmt2.count1))
+ return -EFAULT;
+ xcRB->reply_control_blk_length = msg->fmt2.count1;
+
+ /* Copy data buffer to user */
+ if (msg->fmt2.count2)
+ if (copy_to_user(xcRB->reply_data_addr,
+ data + msg->fmt2.offset2, msg->fmt2.count2))
+ return -EFAULT;
+ xcRB->reply_data_length = msg->fmt2.count2;
+ return 0;
+}
+
+static int convert_response_ica(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ char __user *outputdata,
+ unsigned int outputdatalength)
+{
+ struct type86x_reply *msg = reply->message;
+
+ /* Response type byte is the second byte in the response. */
+ switch (((unsigned char *) reply->message)[1]) {
+ case TYPE82_RSP_CODE:
+ case TYPE88_RSP_CODE:
+ return convert_error(zdev, reply);
+ case TYPE86_RSP_CODE:
+ if (msg->hdr.reply_code)
+ return convert_error(zdev, reply);
+ if (msg->cprbx.cprb_ver_id == 0x02)
+ return convert_type86_ica(zdev, reply,
+ outputdata, outputdatalength);
+ /* no break, incorrect cprb version is an unknown response */
+ default: /* Unknown response type, this should NEVER EVER happen */
+ PRINTK("Unrecognized Message Header: %08x%08x\n",
+ *(unsigned int *) reply->message,
+ *(unsigned int *) (reply->message+4));
+ zdev->online = 0;
+ return -EAGAIN; /* repeat the request on a different device. */
+ }
+}
+
+static int convert_response_xcrb(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ struct ica_xcRB *xcRB)
+{
+ struct type86x_reply *msg = reply->message;
+
+ /* Response type byte is the second byte in the response. */
+ switch (((unsigned char *) reply->message)[1]) {
+ case TYPE82_RSP_CODE:
+ case TYPE88_RSP_CODE:
+ xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
+ return convert_error(zdev, reply);
+ case TYPE86_RSP_CODE:
+ if (msg->hdr.reply_code) {
+ memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32));
+ return convert_error(zdev, reply);
+ }
+ if (msg->cprbx.cprb_ver_id == 0x02)
+ return convert_type86_xcrb(zdev, reply, xcRB);
+ /* no break, incorrect cprb version is an unknown response */
+ default: /* Unknown response type, this should NEVER EVER happen */
+ PRINTK("Unrecognized Message Header: %08x%08x\n",
+ *(unsigned int *) reply->message,
+ *(unsigned int *) (reply->message+4));
+ xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
+ zdev->online = 0;
+ return -EAGAIN; /* repeat the request on a different device. */
+ }
+}
+
+/**
+ * This function is called from the AP bus code after a crypto request
+ * "msg" has finished with the reply message "reply".
+ * It is called from tasklet context.
+ * @ap_dev: pointer to the AP device
+ * @msg: pointer to the AP message
+ * @reply: pointer to the AP reply message
+ */
+static void zcrypt_pcixcc_receive(struct ap_device *ap_dev,
+ struct ap_message *msg,
+ struct ap_message *reply)
+{
+ static struct error_hdr error_reply = {
+ .type = TYPE82_RSP_CODE,
+ .reply_code = REP82_ERROR_MACHINE_FAILURE,
+ };
+ struct response_type *resp_type =
+ (struct response_type *) msg->private;
+ struct type86x_reply *t86r = reply->message;
+ int length;
+
+ /* Copy the reply message to the request message buffer. */
+ if (IS_ERR(reply))
+ memcpy(msg->message, &error_reply, sizeof(error_reply));
+ else if (t86r->hdr.type == TYPE86_RSP_CODE &&
+ t86r->cprbx.cprb_ver_id == 0x02) {
+ switch (resp_type->type) {
+ case PCIXCC_RESPONSE_TYPE_ICA:
+ length = sizeof(struct type86x_reply)
+ + t86r->length - 2;
+ length = min(PCIXCC_MAX_ICA_RESPONSE_SIZE, length);
+ memcpy(msg->message, reply->message, length);
+ break;
+ case PCIXCC_RESPONSE_TYPE_XCRB:
+ length = t86r->fmt2.offset2 + t86r->fmt2.count2;
+ length = min(PCIXCC_MAX_XCRB_RESPONSE_SIZE, length);
+ memcpy(msg->message, reply->message, length);
+ break;
+ default:
+ PRINTK("Invalid internal response type: %i\n",
+ resp_type->type);
+ memcpy(msg->message, &error_reply,
+ sizeof error_reply);
+ }
+ } else
+ memcpy(msg->message, reply->message, sizeof error_reply);
+ complete(&(resp_type->work));
+}
+
+static atomic_t zcrypt_step = ATOMIC_INIT(0);
+
+/**
+ * The request distributor calls this function if it picked the PCIXCC/CEX2C
+ * device to handle a modexpo request.
+ * @zdev: pointer to zcrypt_device structure that identifies the
+ * PCIXCC/CEX2C device to the request distributor
+ * @mex: pointer to the modexpo request buffer
+ */
+static long zcrypt_pcixcc_modexpo(struct zcrypt_device *zdev,
+ struct ica_rsa_modexpo *mex)
+{
+ struct ap_message ap_msg;
+ struct response_type resp_type = {
+ .type = PCIXCC_RESPONSE_TYPE_ICA,
+ };
+ int rc;
+
+ ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!ap_msg.message)
+ return -ENOMEM;
+ ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
+ atomic_inc_return(&zcrypt_step);
+ ap_msg.private = &resp_type;
+ rc = ICAMEX_msg_to_type6MEX_msgX(zdev, &ap_msg, mex);
+ if (rc)
+ goto out_free;
+ init_completion(&resp_type.work);
+ ap_queue_message(zdev->ap_dev, &ap_msg);
+ rc = wait_for_completion_interruptible_timeout(
+ &resp_type.work, PCIXCC_CLEANUP_TIME);
+ if (rc > 0)
+ rc = convert_response_ica(zdev, &ap_msg, mex->outputdata,
+ mex->outputdatalength);
+ else {
+ /* Signal pending or message timed out. */
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
+ if (rc == 0)
+ /* Message timed out. */
+ rc = -ETIME;
+ }
+out_free:
+ free_page((unsigned long) ap_msg.message);
+ return rc;
+}
+
+/**
+ * The request distributor calls this function if it picked the PCIXCC/CEX2C
+ * device to handle a modexpo_crt request.
+ * @zdev: pointer to zcrypt_device structure that identifies the
+ * PCIXCC/CEX2C device to the request distributor
+ * @crt: pointer to the modexpoc_crt request buffer
+ */
+static long zcrypt_pcixcc_modexpo_crt(struct zcrypt_device *zdev,
+ struct ica_rsa_modexpo_crt *crt)
+{
+ struct ap_message ap_msg;
+ struct response_type resp_type = {
+ .type = PCIXCC_RESPONSE_TYPE_ICA,
+ };
+ int rc;
+
+ ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!ap_msg.message)
+ return -ENOMEM;
+ ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
+ atomic_inc_return(&zcrypt_step);
+ ap_msg.private = &resp_type;
+ rc = ICACRT_msg_to_type6CRT_msgX(zdev, &ap_msg, crt);
+ if (rc)
+ goto out_free;
+ init_completion(&resp_type.work);
+ ap_queue_message(zdev->ap_dev, &ap_msg);
+ rc = wait_for_completion_interruptible_timeout(
+ &resp_type.work, PCIXCC_CLEANUP_TIME);
+ if (rc > 0)
+ rc = convert_response_ica(zdev, &ap_msg, crt->outputdata,
+ crt->outputdatalength);
+ else {
+ /* Signal pending or message timed out. */
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
+ if (rc == 0)
+ /* Message timed out. */
+ rc = -ETIME;
+ }
+out_free:
+ free_page((unsigned long) ap_msg.message);
+ return rc;
+}
+
+/**
+ * The request distributor calls this function if it picked the PCIXCC/CEX2C
+ * device to handle a send_cprb request.
+ * @zdev: pointer to zcrypt_device structure that identifies the
+ * PCIXCC/CEX2C device to the request distributor
+ * @xcRB: pointer to the send_cprb request buffer
+ */
+long zcrypt_pcixcc_send_cprb(struct zcrypt_device *zdev, struct ica_xcRB *xcRB)
+{
+ struct ap_message ap_msg;
+ struct response_type resp_type = {
+ .type = PCIXCC_RESPONSE_TYPE_XCRB,
+ };
+ int rc;
+
+ ap_msg.message = (void *) kmalloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE, GFP_KERNEL);
+ if (!ap_msg.message)
+ return -ENOMEM;
+ ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
+ atomic_inc_return(&zcrypt_step);
+ ap_msg.private = &resp_type;
+ rc = XCRB_msg_to_type6CPRB_msgX(zdev, &ap_msg, xcRB);
+ if (rc)
+ goto out_free;
+ init_completion(&resp_type.work);
+ ap_queue_message(zdev->ap_dev, &ap_msg);
+ rc = wait_for_completion_interruptible_timeout(
+ &resp_type.work, PCIXCC_CLEANUP_TIME);
+ if (rc > 0)
+ rc = convert_response_xcrb(zdev, &ap_msg, xcRB);
+ else {
+ /* Signal pending or message timed out. */
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
+ if (rc == 0)
+ /* Message timed out. */
+ rc = -ETIME;
+ }
+out_free:
+ memset(ap_msg.message, 0x0, ap_msg.length);
+ kfree(ap_msg.message);
+ return rc;
+}
+
+/**
+ * The crypto operations for a PCIXCC/CEX2C card.
+ */
+static struct zcrypt_ops zcrypt_pcixcc_ops = {
+ .rsa_modexpo = zcrypt_pcixcc_modexpo,
+ .rsa_modexpo_crt = zcrypt_pcixcc_modexpo_crt,
+ .send_cprb = zcrypt_pcixcc_send_cprb,
+};
+
+/**
+ * Micro-code detection function. Its sends a message to a pcixcc card
+ * to find out the microcode level.
+ * @ap_dev: pointer to the AP device.
+ */
+static int zcrypt_pcixcc_mcl(struct ap_device *ap_dev)
+{
+ static unsigned char msg[] = {
+ 0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x43,0x41,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x00,
+ 0x00,0x00,0x01,0xC4,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x07,0x24,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0xDC,0x02,0x00,0x00,0x00,0x54,0x32,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE8,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x24,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+ 0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x0A,
+ 0x4D,0x52,0x50,0x20,0x20,0x20,0x20,0x20,
+ 0x00,0x42,0x00,0x01,0x02,0x03,0x04,0x05,
+ 0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,
+ 0x0E,0x0F,0x00,0x11,0x22,0x33,0x44,0x55,
+ 0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,
+ 0xEE,0xFF,0xFF,0xEE,0xDD,0xCC,0xBB,0xAA,
+ 0x99,0x88,0x77,0x66,0x55,0x44,0x33,0x22,
+ 0x11,0x00,0x01,0x23,0x45,0x67,0x89,0xAB,
+ 0xCD,0xEF,0xFE,0xDC,0xBA,0x98,0x76,0x54,
+ 0x32,0x10,0x00,0x9A,0x00,0x98,0x00,0x00,
+ 0x1E,0x00,0x00,0x94,0x00,0x00,0x00,0x00,
+ 0x04,0x00,0x00,0x8C,0x00,0x00,0x00,0x40,
+ 0x02,0x00,0x00,0x40,0xBA,0xE8,0x23,0x3C,
+ 0x75,0xF3,0x91,0x61,0xD6,0x73,0x39,0xCF,
+ 0x7B,0x6D,0x8E,0x61,0x97,0x63,0x9E,0xD9,
+ 0x60,0x55,0xD6,0xC7,0xEF,0xF8,0x1E,0x63,
+ 0x95,0x17,0xCC,0x28,0x45,0x60,0x11,0xC5,
+ 0xC4,0x4E,0x66,0xC6,0xE6,0xC3,0xDE,0x8A,
+ 0x19,0x30,0xCF,0x0E,0xD7,0xAA,0xDB,0x01,
+ 0xD8,0x00,0xBB,0x8F,0x39,0x9F,0x64,0x28,
+ 0xF5,0x7A,0x77,0x49,0xCC,0x6B,0xA3,0x91,
+ 0x97,0x70,0xE7,0x60,0x1E,0x39,0xE1,0xE5,
+ 0x33,0xE1,0x15,0x63,0x69,0x08,0x80,0x4C,
+ 0x67,0xC4,0x41,0x8F,0x48,0xDF,0x26,0x98,
+ 0xF1,0xD5,0x8D,0x88,0xD9,0x6A,0xA4,0x96,
+ 0xC5,0x84,0xD9,0x30,0x49,0x67,0x7D,0x19,
+ 0xB1,0xB3,0x45,0x4D,0xB2,0x53,0x9A,0x47,
+ 0x3C,0x7C,0x55,0xBF,0xCC,0x85,0x00,0x36,
+ 0xF1,0x3D,0x93,0x53
+ };
+ unsigned long long psmid;
+ struct CPRBX *cprbx;
+ char *reply;
+ int rc, i;
+
+ reply = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!reply)
+ return -ENOMEM;
+
+ rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, msg, sizeof(msg));
+ if (rc)
+ goto out_free;
+
+ /* Wait for the test message to complete. */
+ for (i = 0; i < 6; i++) {
+ mdelay(300);
+ rc = ap_recv(ap_dev->qid, &psmid, reply, 4096);
+ if (rc == 0 && psmid == 0x0102030405060708ULL)
+ break;
+ }
+
+ if (i >= 6) {
+ /* Got no answer. */
+ rc = -ENODEV;
+ goto out_free;
+ }
+
+ cprbx = (struct CPRBX *) (reply + 48);
+ if (cprbx->ccp_rtcode == 8 && cprbx->ccp_rscode == 33)
+ rc = ZCRYPT_PCIXCC_MCL2;
+ else
+ rc = ZCRYPT_PCIXCC_MCL3;
+out_free:
+ free_page((unsigned long) reply);
+ return rc;
+}
+
+/**
+ * Probe function for PCIXCC/CEX2C cards. It always accepts the AP device
+ * since the bus_match already checked the hardware type. The PCIXCC
+ * cards come in two flavours: micro code level 2 and micro code level 3.
+ * This is checked by sending a test message to the device.
+ * @ap_dev: pointer to the AP device.
+ */
+static int zcrypt_pcixcc_probe(struct ap_device *ap_dev)
+{
+ struct zcrypt_device *zdev;
+ int rc;
+
+ zdev = zcrypt_device_alloc(PCIXCC_MAX_RESPONSE_SIZE);
+ if (!zdev)
+ return -ENOMEM;
+ zdev->ap_dev = ap_dev;
+ zdev->ops = &zcrypt_pcixcc_ops;
+ zdev->online = 1;
+ if (ap_dev->device_type == AP_DEVICE_TYPE_PCIXCC) {
+ rc = zcrypt_pcixcc_mcl(ap_dev);
+ if (rc < 0) {
+ zcrypt_device_free(zdev);
+ return rc;
+ }
+ zdev->user_space_type = rc;
+ if (rc == ZCRYPT_PCIXCC_MCL2) {
+ zdev->type_string = "PCIXCC_MCL2";
+ zdev->speed_rating = PCIXCC_MCL2_SPEED_RATING;
+ zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD;
+ zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
+ } else {
+ zdev->type_string = "PCIXCC_MCL3";
+ zdev->speed_rating = PCIXCC_MCL3_SPEED_RATING;
+ zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE;
+ zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
+ }
+ } else {
+ zdev->user_space_type = ZCRYPT_CEX2C;
+ zdev->type_string = "CEX2C";
+ zdev->speed_rating = CEX2C_SPEED_RATING;
+ zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE;
+ zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE;
+ }
+ ap_dev->reply = &zdev->reply;
+ ap_dev->private = zdev;
+ rc = zcrypt_device_register(zdev);
+ if (rc)
+ goto out_free;
+ return 0;
+
+ out_free:
+ ap_dev->private = NULL;
+ zcrypt_device_free(zdev);
+ return rc;
+}
+
+/**
+ * This is called to remove the extended PCIXCC/CEX2C driver information
+ * if an AP device is removed.
+ */
+static void zcrypt_pcixcc_remove(struct ap_device *ap_dev)
+{
+ struct zcrypt_device *zdev = ap_dev->private;
+
+ zcrypt_device_unregister(zdev);
+}
+
+int __init zcrypt_pcixcc_init(void)
+{
+ return ap_driver_register(&zcrypt_pcixcc_driver, THIS_MODULE, "pcixcc");
+}
+
+void zcrypt_pcixcc_exit(void)
+{
+ ap_driver_unregister(&zcrypt_pcixcc_driver);
+}
+
+#ifndef CONFIG_ZCRYPT_MONOLITHIC
+module_init(zcrypt_pcixcc_init);
+module_exit(zcrypt_pcixcc_exit);
+#endif
--- /dev/null
+/*
+ * linux/drivers/s390/crypto/zcrypt_pcixcc.h
+ *
+ * zcrypt 2.1.0
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _ZCRYPT_PCIXCC_H_
+#define _ZCRYPT_PCIXCC_H_
+
+/**
+ * CPRBX
+ * Note that all shorts and ints are big-endian.
+ * All pointer fields are 16 bytes long, and mean nothing.
+ *
+ * A request CPRB is followed by a request_parameter_block.
+ *
+ * The request (or reply) parameter block is organized thus:
+ * function code
+ * VUD block
+ * key block
+ */
+struct CPRBX {
+ unsigned short cprb_len; /* CPRB length 220 */
+ unsigned char cprb_ver_id; /* CPRB version id. 0x02 */
+ unsigned char pad_000[3]; /* Alignment pad bytes */
+ unsigned char func_id[2]; /* function id 0x5432 */
+ unsigned char cprb_flags[4]; /* Flags */
+ unsigned int req_parml; /* request parameter buffer len */
+ unsigned int req_datal; /* request data buffer */
+ unsigned int rpl_msgbl; /* reply message block length */
+ unsigned int rpld_parml; /* replied parameter block len */
+ unsigned int rpl_datal; /* reply data block len */
+ unsigned int rpld_datal; /* replied data block len */
+ unsigned int req_extbl; /* request extension block len */
+ unsigned char pad_001[4]; /* reserved */
+ unsigned int rpld_extbl; /* replied extension block len */
+ unsigned char req_parmb[16]; /* request parm block 'address' */
+ unsigned char req_datab[16]; /* request data block 'address' */
+ unsigned char rpl_parmb[16]; /* reply parm block 'address' */
+ unsigned char rpl_datab[16]; /* reply data block 'address' */
+ unsigned char req_extb[16]; /* request extension block 'addr'*/
+ unsigned char rpl_extb[16]; /* reply extension block 'addres'*/
+ unsigned short ccp_rtcode; /* server return code */
+ unsigned short ccp_rscode; /* server reason code */
+ unsigned int mac_data_len; /* Mac Data Length */
+ unsigned char logon_id[8]; /* Logon Identifier */
+ unsigned char mac_value[8]; /* Mac Value */
+ unsigned char mac_content_flgs;/* Mac content flag byte */
+ unsigned char pad_002; /* Alignment */
+ unsigned short domain; /* Domain */
+ unsigned char pad_003[12]; /* Domain masks */
+ unsigned char pad_004[36]; /* reserved */
+} __attribute__((packed));
+
+int zcrypt_pcixcc_init(void);
+void zcrypt_pcixcc_exit(void);
+
+#endif /* _ZCRYPT_PCIXCC_H_ */
#include "s390mach.h"
-#define DBG printk
-// #define DBG(args,...) do {} while (0);
-
static struct semaphore m_sem;
extern int css_process_crw(int, int);
ccode = stcrw(&crw[chain]);
if (ccode != 0)
break;
- DBG(KERN_DEBUG "crw_info : CRW reports slct=%d, oflw=%d, "
- "chn=%d, rsc=%X, anc=%d, erc=%X, rsid=%X\n",
- crw[chain].slct, crw[chain].oflw, crw[chain].chn,
- crw[chain].rsc, crw[chain].anc, crw[chain].erc,
- crw[chain].rsid);
+ printk(KERN_DEBUG "crw_info : CRW reports slct=%d, oflw=%d, "
+ "chn=%d, rsc=%X, anc=%d, erc=%X, rsid=%X\n",
+ crw[chain].slct, crw[chain].oflw, crw[chain].chn,
+ crw[chain].rsc, crw[chain].anc, crw[chain].erc,
+ crw[chain].rsid);
/* Check for overflows. */
if (crw[chain].oflw) {
pr_debug("%s: crw overflow detected!\n", __FUNCTION__);
* reported to the common I/O layer.
*/
if (crw[chain].slct) {
- DBG(KERN_INFO"solicited machine check for "
- "channel path %02X\n", crw[0].rsid);
+ pr_debug("solicited machine check for "
+ "channel path %02X\n", crw[0].rsid);
break;
}
switch (crw[0].erc) {
} while (0)
#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_NORMAL
-# define ZFCP_LOG_NORMAL(fmt, args...)
+# define ZFCP_LOG_NORMAL(fmt, args...) do { } while (0)
#else
# define ZFCP_LOG_NORMAL(fmt, args...) \
do { \
#endif
#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_INFO
-# define ZFCP_LOG_INFO(fmt, args...)
+# define ZFCP_LOG_INFO(fmt, args...) do { } while (0)
#else
# define ZFCP_LOG_INFO(fmt, args...) \
do { \
#endif
#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_DEBUG
-# define ZFCP_LOG_DEBUG(fmt, args...)
+# define ZFCP_LOG_DEBUG(fmt, args...) do { } while (0)
#else
# define ZFCP_LOG_DEBUG(fmt, args...) \
ZFCP_LOG(ZFCP_LOG_LEVEL_DEBUG, fmt , ##args)
#endif
#if ZFCP_LOG_LEVEL_LIMIT < ZFCP_LOG_LEVEL_TRACE
-# define ZFCP_LOG_TRACE(fmt, args...)
+# define ZFCP_LOG_TRACE(fmt, args...) do { } while (0)
#else
# define ZFCP_LOG_TRACE(fmt, args...) \
ZFCP_LOG(ZFCP_LOG_LEVEL_TRACE, fmt , ##args)
#include <linux/init.h>
#include <asm/ebcdic.h>
-struct sysinfo_1_1_1
-{
+struct sysinfo_1_1_1 {
char reserved_0[32];
char manufacturer[16];
char type[4];
char reserved_1[12];
- char model[16];
+ char model_capacity[16];
char sequence[16];
char plant[4];
+ char model[16];
};
-struct sysinfo_1_2_1
-{
+struct sysinfo_1_2_1 {
char reserved_0[80];
char sequence[16];
char plant[4];
unsigned short cpu_address;
};
-struct sysinfo_1_2_2
-{
- char reserved_0[32];
+struct sysinfo_1_2_2 {
+ char format;
+ char reserved_0[1];
+ unsigned short acc_offset;
+ char reserved_1[24];
+ unsigned int secondary_capability;
unsigned int capability;
unsigned short cpus_total;
unsigned short cpus_configured;
unsigned short adjustment[0];
};
-struct sysinfo_2_2_1
-{
+struct sysinfo_1_2_2_extension {
+ unsigned int alt_capability;
+ unsigned short alt_adjustment[0];
+};
+
+struct sysinfo_2_2_1 {
char reserved_0[80];
char sequence[16];
char plant[4];
unsigned short cpu_address;
};
-struct sysinfo_2_2_2
-{
+struct sysinfo_2_2_2 {
char reserved_0[32];
unsigned short lpar_number;
char reserved_1;
unsigned char characteristics;
- #define LPAR_CHAR_DEDICATED (1 << 7)
- #define LPAR_CHAR_SHARED (1 << 6)
- #define LPAR_CHAR_LIMITED (1 << 5)
unsigned short cpus_total;
unsigned short cpus_configured;
unsigned short cpus_standby;
unsigned short cpus_shared;
};
-struct sysinfo_3_2_2
-{
+#define LPAR_CHAR_DEDICATED (1 << 7)
+#define LPAR_CHAR_SHARED (1 << 6)
+#define LPAR_CHAR_LIMITED (1 << 5)
+
+struct sysinfo_3_2_2 {
char reserved_0[31];
unsigned char count;
- struct
- {
+ struct {
char reserved_0[4];
unsigned short cpus_total;
unsigned short cpus_configured;
} vm[8];
};
-union s390_sysinfo
+static inline int stsi(void *sysinfo, int fc, int sel1, int sel2)
{
- struct sysinfo_1_1_1 sysinfo_1_1_1;
- struct sysinfo_1_2_1 sysinfo_1_2_1;
- struct sysinfo_1_2_2 sysinfo_1_2_2;
- struct sysinfo_2_2_1 sysinfo_2_2_1;
- struct sysinfo_2_2_2 sysinfo_2_2_2;
- struct sysinfo_3_2_2 sysinfo_3_2_2;
-};
-
-static inline int stsi (void *sysinfo,
- int fc, int sel1, int sel2)
-{
- int cc, retv;
-
-#ifndef CONFIG_64BIT
- __asm__ __volatile__ ( "lr\t0,%2\n"
- "\tlr\t1,%3\n"
- "\tstsi\t0(%4)\n"
- "0:\tipm\t%0\n"
- "\tsrl\t%0,28\n"
- "1:lr\t%1,0\n"
- ".section .fixup,\"ax\"\n"
- "2:\tlhi\t%0,3\n"
- "\tbras\t1,3f\n"
- "\t.long 1b\n"
- "3:\tl\t1,0(1)\n"
- "\tbr\t1\n"
- ".previous\n"
- ".section __ex_table,\"a\"\n"
- "\t.align 4\n"
- "\t.long 0b,2b\n"
- ".previous\n"
- : "=d" (cc), "=d" (retv)
- : "d" ((fc << 28) | sel1), "d" (sel2), "a" (sysinfo)
- : "cc", "memory", "0", "1" );
-#else
- __asm__ __volatile__ ( "lr\t0,%2\n"
- "lr\t1,%3\n"
- "\tstsi\t0(%4)\n"
- "0:\tipm\t%0\n"
- "\tsrl\t%0,28\n"
- "1:lr\t%1,0\n"
- ".section .fixup,\"ax\"\n"
- "2:\tlhi\t%0,3\n"
- "\tjg\t1b\n"
- ".previous\n"
- ".section __ex_table,\"a\"\n"
- "\t.align 8\n"
- "\t.quad 0b,2b\n"
- ".previous\n"
- : "=d" (cc), "=d" (retv)
- : "d" ((fc << 28) | sel1), "d" (sel2), "a" (sysinfo)
- : "cc", "memory", "0", "1" );
-#endif
-
- return cc? -1 : retv;
+ register int r0 asm("0") = (fc << 28) | sel1;
+ register int r1 asm("1") = sel2;
+
+ asm volatile(
+ " stsi 0(%2)\n"
+ "0: jz 2f\n"
+ "1: lhi %0,%3\n"
+ "2:\n"
+ EX_TABLE(0b,1b)
+ : "+d" (r0) : "d" (r1), "a" (sysinfo), "K" (-ENOSYS)
+ : "cc", "memory" );
+ return r0;
}
-static inline int stsi_0 (void)
+static inline int stsi_0(void)
{
int rc = stsi (NULL, 0, 0, 0);
- return rc == -1 ? rc : (((unsigned int)rc) >> 28);
+ return rc == -ENOSYS ? rc : (((unsigned int) rc) >> 28);
}
-static inline int stsi_1_1_1 (struct sysinfo_1_1_1 *info)
+static int stsi_1_1_1(struct sysinfo_1_1_1 *info, char *page, int len)
{
- int rc = stsi (info, 1, 1, 1);
- if (rc != -1)
- {
- EBCASC (info->manufacturer, sizeof(info->manufacturer));
- EBCASC (info->type, sizeof(info->type));
- EBCASC (info->model, sizeof(info->model));
- EBCASC (info->sequence, sizeof(info->sequence));
- EBCASC (info->plant, sizeof(info->plant));
- }
- return rc == -1 ? rc : 0;
+ if (stsi(info, 1, 1, 1) == -ENOSYS)
+ return len;
+
+ EBCASC(info->manufacturer, sizeof(info->manufacturer));
+ EBCASC(info->type, sizeof(info->type));
+ EBCASC(info->model, sizeof(info->model));
+ EBCASC(info->sequence, sizeof(info->sequence));
+ EBCASC(info->plant, sizeof(info->plant));
+ EBCASC(info->model_capacity, sizeof(info->model_capacity));
+ len += sprintf(page + len, "Manufacturer: %-16.16s\n",
+ info->manufacturer);
+ len += sprintf(page + len, "Type: %-4.4s\n",
+ info->type);
+ if (info->model[0] != '\0')
+ /*
+ * Sigh: the model field has been renamed with System z9
+ * to model_capacity and a new model field has been added
+ * after the plant field. To avoid confusing older programs
+ * the "Model:" prints "model_capacity model" or just
+ * "model_capacity" if the model string is empty .
+ */
+ len += sprintf(page + len,
+ "Model: %-16.16s %-16.16s\n",
+ info->model_capacity, info->model);
+ else
+ len += sprintf(page + len, "Model: %-16.16s\n",
+ info->model_capacity);
+ len += sprintf(page + len, "Sequence Code: %-16.16s\n",
+ info->sequence);
+ len += sprintf(page + len, "Plant: %-4.4s\n",
+ info->plant);
+ len += sprintf(page + len, "Model Capacity: %-16.16s\n",
+ info->model_capacity);
+ return len;
}
-static inline int stsi_1_2_1 (struct sysinfo_1_2_1 *info)
+#if 0 /* Currently unused */
+static int stsi_1_2_1(struct sysinfo_1_2_1 *info, char *page, int len)
{
- int rc = stsi (info, 1, 2, 1);
- if (rc != -1)
- {
- EBCASC (info->sequence, sizeof(info->sequence));
- EBCASC (info->plant, sizeof(info->plant));
- }
- return rc == -1 ? rc : 0;
+ if (stsi(info, 1, 2, 1) == -ENOSYS)
+ return len;
+
+ len += sprintf(page + len, "\n");
+ EBCASC(info->sequence, sizeof(info->sequence));
+ EBCASC(info->plant, sizeof(info->plant));
+ len += sprintf(page + len, "Sequence Code of CPU: %-16.16s\n",
+ info->sequence);
+ len += sprintf(page + len, "Plant of CPU: %-16.16s\n",
+ info->plant);
+ return len;
}
+#endif
-static inline int stsi_1_2_2 (struct sysinfo_1_2_2 *info)
+static int stsi_1_2_2(struct sysinfo_1_2_2 *info, char *page, int len)
{
- int rc = stsi (info, 1, 2, 2);
- return rc == -1 ? rc : 0;
+ struct sysinfo_1_2_2_extension *ext;
+ int i;
+
+ if (stsi(info, 1, 2, 2) == -ENOSYS)
+ return len;
+ ext = (struct sysinfo_1_2_2_extension *)
+ ((unsigned long) info + info->acc_offset);
+
+ len += sprintf(page + len, "\n");
+ len += sprintf(page + len, "CPUs Total: %d\n",
+ info->cpus_total);
+ len += sprintf(page + len, "CPUs Configured: %d\n",
+ info->cpus_configured);
+ len += sprintf(page + len, "CPUs Standby: %d\n",
+ info->cpus_standby);
+ len += sprintf(page + len, "CPUs Reserved: %d\n",
+ info->cpus_reserved);
+
+ if (info->format == 1) {
+ /*
+ * Sigh 2. According to the specification the alternate
+ * capability field is a 32 bit floating point number
+ * if the higher order 8 bits are not zero. Printing
+ * a floating point number in the kernel is a no-no,
+ * always print the number as 32 bit unsigned integer.
+ * The user-space needs to know about the stange
+ * encoding of the alternate cpu capability.
+ */
+ len += sprintf(page + len, "Capability: %u %u\n",
+ info->capability, ext->alt_capability);
+ for (i = 2; i <= info->cpus_total; i++)
+ len += sprintf(page + len,
+ "Adjustment %02d-way: %u %u\n",
+ i, info->adjustment[i-2],
+ ext->alt_adjustment[i-2]);
+
+ } else {
+ len += sprintf(page + len, "Capability: %u\n",
+ info->capability);
+ for (i = 2; i <= info->cpus_total; i++)
+ len += sprintf(page + len,
+ "Adjustment %02d-way: %u\n",
+ i, info->adjustment[i-2]);
+ }
+
+ if (info->secondary_capability != 0)
+ len += sprintf(page + len, "Secondary Capability: %d\n",
+ info->secondary_capability);
+
+ return len;
}
-static inline int stsi_2_2_1 (struct sysinfo_2_2_1 *info)
+#if 0 /* Currently unused */
+static int stsi_2_2_1(struct sysinfo_2_2_1 *info, char *page, int len)
{
- int rc = stsi (info, 2, 2, 1);
- if (rc != -1)
- {
- EBCASC (info->sequence, sizeof(info->sequence));
- EBCASC (info->plant, sizeof(info->plant));
- }
- return rc == -1 ? rc : 0;
+ if (stsi(info, 2, 2, 1) == -ENOSYS)
+ return len;
+
+ len += sprintf(page + len, "\n");
+ EBCASC (info->sequence, sizeof(info->sequence));
+ EBCASC (info->plant, sizeof(info->plant));
+ len += sprintf(page + len, "Sequence Code of logical CPU: %-16.16s\n",
+ info->sequence);
+ len += sprintf(page + len, "Plant of logical CPU: %-16.16s\n",
+ info->plant);
+ return len;
}
+#endif
-static inline int stsi_2_2_2 (struct sysinfo_2_2_2 *info)
+static int stsi_2_2_2(struct sysinfo_2_2_2 *info, char *page, int len)
{
- int rc = stsi (info, 2, 2, 2);
- if (rc != -1)
- {
- EBCASC (info->name, sizeof(info->name));
- }
- return rc == -1 ? rc : 0;
+ if (stsi(info, 2, 2, 2) == -ENOSYS)
+ return len;
+
+ EBCASC (info->name, sizeof(info->name));
+
+ len += sprintf(page + len, "\n");
+ len += sprintf(page + len, "LPAR Number: %d\n",
+ info->lpar_number);
+
+ len += sprintf(page + len, "LPAR Characteristics: ");
+ if (info->characteristics & LPAR_CHAR_DEDICATED)
+ len += sprintf(page + len, "Dedicated ");
+ if (info->characteristics & LPAR_CHAR_SHARED)
+ len += sprintf(page + len, "Shared ");
+ if (info->characteristics & LPAR_CHAR_LIMITED)
+ len += sprintf(page + len, "Limited ");
+ len += sprintf(page + len, "\n");
+
+ len += sprintf(page + len, "LPAR Name: %-8.8s\n",
+ info->name);
+
+ len += sprintf(page + len, "LPAR Adjustment: %d\n",
+ info->caf);
+
+ len += sprintf(page + len, "LPAR CPUs Total: %d\n",
+ info->cpus_total);
+ len += sprintf(page + len, "LPAR CPUs Configured: %d\n",
+ info->cpus_configured);
+ len += sprintf(page + len, "LPAR CPUs Standby: %d\n",
+ info->cpus_standby);
+ len += sprintf(page + len, "LPAR CPUs Reserved: %d\n",
+ info->cpus_reserved);
+ len += sprintf(page + len, "LPAR CPUs Dedicated: %d\n",
+ info->cpus_dedicated);
+ len += sprintf(page + len, "LPAR CPUs Shared: %d\n",
+ info->cpus_shared);
+ return len;
}
-static inline int stsi_3_2_2 (struct sysinfo_3_2_2 *info)
+static int stsi_3_2_2(struct sysinfo_3_2_2 *info, char *page, int len)
{
- int rc = stsi (info, 3, 2, 2);
- if (rc != -1)
- {
- int i;
- for (i = 0; i < info->count; i++)
- {
- EBCASC (info->vm[i].name, sizeof(info->vm[i].name));
- EBCASC (info->vm[i].cpi, sizeof(info->vm[i].cpi));
- }
+ int i;
+
+ if (stsi(info, 3, 2, 2) == -ENOSYS)
+ return len;
+ for (i = 0; i < info->count; i++) {
+ EBCASC (info->vm[i].name, sizeof(info->vm[i].name));
+ EBCASC (info->vm[i].cpi, sizeof(info->vm[i].cpi));
+ len += sprintf(page + len, "\n");
+ len += sprintf(page + len, "VM%02d Name: %-8.8s\n",
+ i, info->vm[i].name);
+ len += sprintf(page + len, "VM%02d Control Program: %-16.16s\n",
+ i, info->vm[i].cpi);
+
+ len += sprintf(page + len, "VM%02d Adjustment: %d\n",
+ i, info->vm[i].caf);
+
+ len += sprintf(page + len, "VM%02d CPUs Total: %d\n",
+ i, info->vm[i].cpus_total);
+ len += sprintf(page + len, "VM%02d CPUs Configured: %d\n",
+ i, info->vm[i].cpus_configured);
+ len += sprintf(page + len, "VM%02d CPUs Standby: %d\n",
+ i, info->vm[i].cpus_standby);
+ len += sprintf(page + len, "VM%02d CPUs Reserved: %d\n",
+ i, info->vm[i].cpus_reserved);
}
- return rc == -1 ? rc : 0;
+ return len;
}
off_t off, int count,
int *eof, void *data)
{
- unsigned long info_page = get_zeroed_page (GFP_KERNEL);
- union s390_sysinfo *info = (union s390_sysinfo *) info_page;
- int len = 0;
- int level;
- int i;
+ unsigned long info = get_zeroed_page (GFP_KERNEL);
+ int level, len;
if (!info)
return 0;
- level = stsi_0 ();
-
- if (level >= 1 && stsi_1_1_1 (&info->sysinfo_1_1_1) == 0)
- {
- len += sprintf (page+len, "Manufacturer: %-16.16s\n",
- info->sysinfo_1_1_1.manufacturer);
- len += sprintf (page+len, "Type: %-4.4s\n",
- info->sysinfo_1_1_1.type);
- len += sprintf (page+len, "Model: %-16.16s\n",
- info->sysinfo_1_1_1.model);
- len += sprintf (page+len, "Sequence Code: %-16.16s\n",
- info->sysinfo_1_1_1.sequence);
- len += sprintf (page+len, "Plant: %-4.4s\n",
- info->sysinfo_1_1_1.plant);
- }
-
- if (level >= 1 && stsi_1_2_2 (&info->sysinfo_1_2_2) == 0)
- {
- len += sprintf (page+len, "\n");
- len += sprintf (page+len, "CPUs Total: %d\n",
- info->sysinfo_1_2_2.cpus_total);
- len += sprintf (page+len, "CPUs Configured: %d\n",
- info->sysinfo_1_2_2.cpus_configured);
- len += sprintf (page+len, "CPUs Standby: %d\n",
- info->sysinfo_1_2_2.cpus_standby);
- len += sprintf (page+len, "CPUs Reserved: %d\n",
- info->sysinfo_1_2_2.cpus_reserved);
-
- len += sprintf (page+len, "Capability: %d\n",
- info->sysinfo_1_2_2.capability);
+ len = 0;
+ level = stsi_0();
+ if (level >= 1)
+ len = stsi_1_1_1((struct sysinfo_1_1_1 *) info, page, len);
- for (i = 2; i <= info->sysinfo_1_2_2.cpus_total; i++)
- len += sprintf (page+len, "Adjustment %02d-way: %d\n",
- i, info->sysinfo_1_2_2.adjustment[i-2]);
- }
+ if (level >= 1)
+ len = stsi_1_2_2((struct sysinfo_1_2_2 *) info, page, len);
- if (level >= 2 && stsi_2_2_2 (&info->sysinfo_2_2_2) == 0)
- {
- len += sprintf (page+len, "\n");
- len += sprintf (page+len, "LPAR Number: %d\n",
- info->sysinfo_2_2_2.lpar_number);
-
- len += sprintf (page+len, "LPAR Characteristics: ");
- if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_DEDICATED)
- len += sprintf (page+len, "Dedicated ");
- if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_SHARED)
- len += sprintf (page+len, "Shared ");
- if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_LIMITED)
- len += sprintf (page+len, "Limited ");
- len += sprintf (page+len, "\n");
-
- len += sprintf (page+len, "LPAR Name: %-8.8s\n",
- info->sysinfo_2_2_2.name);
-
- len += sprintf (page+len, "LPAR Adjustment: %d\n",
- info->sysinfo_2_2_2.caf);
-
- len += sprintf (page+len, "LPAR CPUs Total: %d\n",
- info->sysinfo_2_2_2.cpus_total);
- len += sprintf (page+len, "LPAR CPUs Configured: %d\n",
- info->sysinfo_2_2_2.cpus_configured);
- len += sprintf (page+len, "LPAR CPUs Standby: %d\n",
- info->sysinfo_2_2_2.cpus_standby);
- len += sprintf (page+len, "LPAR CPUs Reserved: %d\n",
- info->sysinfo_2_2_2.cpus_reserved);
- len += sprintf (page+len, "LPAR CPUs Dedicated: %d\n",
- info->sysinfo_2_2_2.cpus_dedicated);
- len += sprintf (page+len, "LPAR CPUs Shared: %d\n",
- info->sysinfo_2_2_2.cpus_shared);
- }
+ if (level >= 2)
+ len = stsi_2_2_2((struct sysinfo_2_2_2 *) info, page, len);
- if (level >= 3 && stsi_3_2_2 (&info->sysinfo_3_2_2) == 0)
- {
- for (i = 0; i < info->sysinfo_3_2_2.count; i++)
- {
- len += sprintf (page+len, "\n");
- len += sprintf (page+len, "VM%02d Name: %-8.8s\n",
- i, info->sysinfo_3_2_2.vm[i].name);
- len += sprintf (page+len, "VM%02d Control Program: %-16.16s\n",
- i, info->sysinfo_3_2_2.vm[i].cpi);
-
- len += sprintf (page+len, "VM%02d Adjustment: %d\n",
- i, info->sysinfo_3_2_2.vm[i].caf);
-
- len += sprintf (page+len, "VM%02d CPUs Total: %d\n",
- i, info->sysinfo_3_2_2.vm[i].cpus_total);
- len += sprintf (page+len, "VM%02d CPUs Configured: %d\n",
- i, info->sysinfo_3_2_2.vm[i].cpus_configured);
- len += sprintf (page+len, "VM%02d CPUs Standby: %d\n",
- i, info->sysinfo_3_2_2.vm[i].cpus_standby);
- len += sprintf (page+len, "VM%02d CPUs Reserved: %d\n",
- i, info->sysinfo_3_2_2.vm[i].cpus_reserved);
- }
- }
+ if (level >= 3)
+ len = stsi_3_2_2((struct sysinfo_3_2_2 *) info, page, len);
- free_page (info_page);
+ free_page (info);
return len;
}
static __init int create_proc_sysinfo(void)
{
- create_proc_read_entry ("sysinfo", 0444, NULL,
- proc_read_sysinfo, NULL);
+ create_proc_read_entry("sysinfo", 0444, NULL,
+ proc_read_sysinfo, NULL);
return 0;
}
include include/asm-generic/Kbuild.asm
unifdef-y += cmb.h debug.h
-header-y += dasd.h qeth.h tape390.h ucontext.h vtoc.h z90crypt.h
+header-y += dasd.h monwriter.h qeth.h tape390.h ucontext.h vtoc.h z90crypt.h
--- /dev/null
+/*
+ * include/asm-s390/appldata.h
+ *
+ * Copyright (C) IBM Corp. 2006
+ *
+ * Author(s): Melissa Howland <melissah@us.ibm.com>
+ */
+
+#ifndef _ASM_S390_APPLDATA_H
+#define _ASM_S390_APPLDATA_H
+
+#include <asm/io.h>
+
+#ifndef CONFIG_64BIT
+
+#define APPLDATA_START_INTERVAL_REC 0x00 /* Function codes for */
+#define APPLDATA_STOP_REC 0x01 /* DIAG 0xDC */
+#define APPLDATA_GEN_EVENT_REC 0x02
+#define APPLDATA_START_CONFIG_REC 0x03
+
+/*
+ * Parameter list for DIAGNOSE X'DC'
+ */
+struct appldata_parameter_list {
+ u16 diag; /* The DIAGNOSE code X'00DC' */
+ u8 function; /* The function code for the DIAGNOSE */
+ u8 parlist_length; /* Length of the parameter list */
+ u32 product_id_addr; /* Address of the 16-byte product ID */
+ u16 reserved;
+ u16 buffer_length; /* Length of the application data buffer */
+ u32 buffer_addr; /* Address of the application data buffer */
+} __attribute__ ((packed));
+
+#else /* CONFIG_64BIT */
+
+#define APPLDATA_START_INTERVAL_REC 0x80
+#define APPLDATA_STOP_REC 0x81
+#define APPLDATA_GEN_EVENT_REC 0x82
+#define APPLDATA_START_CONFIG_REC 0x83
+
+/*
+ * Parameter list for DIAGNOSE X'DC'
+ */
+struct appldata_parameter_list {
+ u16 diag;
+ u8 function;
+ u8 parlist_length;
+ u32 unused01;
+ u16 reserved;
+ u16 buffer_length;
+ u32 unused02;
+ u64 product_id_addr;
+ u64 buffer_addr;
+} __attribute__ ((packed));
+
+#endif /* CONFIG_64BIT */
+
+struct appldata_product_id {
+ char prod_nr[7]; /* product number */
+ u16 prod_fn; /* product function */
+ u8 record_nr; /* record number */
+ u16 version_nr; /* version */
+ u16 release_nr; /* release */
+ u16 mod_lvl; /* modification level */
+} __attribute__ ((packed));
+
+static inline int appldata_asm(struct appldata_product_id *id,
+ unsigned short fn, void *buffer,
+ unsigned short length)
+{
+ struct appldata_parameter_list parm_list;
+ int ry;
+
+ if (!MACHINE_IS_VM)
+ return -ENOSYS;
+ parm_list.diag = 0xdc;
+ parm_list.function = fn;
+ parm_list.parlist_length = sizeof(parm_list);
+ parm_list.buffer_length = length;
+ parm_list.product_id_addr = (unsigned long) id;
+ parm_list.buffer_addr = virt_to_phys(buffer);
+ asm volatile(
+ "diag %1,%0,0xdc"
+ : "=d" (ry)
+ : "d" (&parm_list), "m" (parm_list), "m" (*id)
+ : "cc");
+ return ry;
+}
+
+#endif /* _ASM_S390_APPLDATA_H */
__u32 vrdccrft : 8; /* real device feature (output) */
} __attribute__ ((packed,aligned(4)));
+struct ccw_dev_id {
+ u8 ssid;
+ u16 devno;
+};
+
extern int diag210(struct diag210 *addr);
extern void wait_cons_dev(void);
extern void css_schedule_reprobe(void);
+extern void reipl_ccw_dev(struct ccw_dev_id *id);
+
#endif
#endif
#define MAX_DMA_ADDRESS 0x80000000
-#define free_dma(x)
+#define free_dma(x) do { } while (0)
#endif /* _ASM_DMA_H */
#include <asm/errno.h>
#include <asm/uaccess.h>
-#ifndef __s390x__
-#define __futex_atomic_fixup \
- ".section __ex_table,\"a\"\n" \
- " .align 4\n" \
- " .long 0b,4b,2b,4b,3b,4b\n" \
- ".previous"
-#else /* __s390x__ */
-#define __futex_atomic_fixup \
- ".section __ex_table,\"a\"\n" \
- " .align 8\n" \
- " .quad 0b,4b,2b,4b,3b,4b\n" \
- ".previous"
-#endif /* __s390x__ */
-
-#define __futex_atomic_op(insn, ret, oldval, newval, uaddr, oparg) \
- asm volatile(" sacf 256\n" \
- "0: l %1,0(%6)\n" \
- "1: " insn \
- "2: cs %1,%2,0(%6)\n" \
- "3: jl 1b\n" \
- " lhi %0,0\n" \
- "4: sacf 0\n" \
- __futex_atomic_fixup \
- : "=d" (ret), "=&d" (oldval), "=&d" (newval), \
- "=m" (*uaddr) \
- : "0" (-EFAULT), "d" (oparg), "a" (uaddr), \
- "m" (*uaddr) : "cc" );
-
static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
int oparg = (encoded_op << 8) >> 20;
int cmparg = (encoded_op << 20) >> 20;
- int oldval = 0, newval, ret;
+ int oldval, ret;
+
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
return -EFAULT;
- inc_preempt_count();
-
- switch (op) {
- case FUTEX_OP_SET:
- __futex_atomic_op("lr %2,%5\n",
- ret, oldval, newval, uaddr, oparg);
- break;
- case FUTEX_OP_ADD:
- __futex_atomic_op("lr %2,%1\nar %2,%5\n",
- ret, oldval, newval, uaddr, oparg);
- break;
- case FUTEX_OP_OR:
- __futex_atomic_op("lr %2,%1\nor %2,%5\n",
- ret, oldval, newval, uaddr, oparg);
- break;
- case FUTEX_OP_ANDN:
- __futex_atomic_op("lr %2,%1\nnr %2,%5\n",
- ret, oldval, newval, uaddr, oparg);
- break;
- case FUTEX_OP_XOR:
- __futex_atomic_op("lr %2,%1\nxr %2,%5\n",
- ret, oldval, newval, uaddr, oparg);
- break;
- default:
- ret = -ENOSYS;
- }
-
- dec_preempt_count();
+ ret = uaccess.futex_atomic_op(op, uaddr, oparg, &oldval);
if (!ret) {
switch (cmp) {
return ret;
}
-static inline int
-futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr,
+ int oldval, int newval)
{
- int ret;
-
if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
return -EFAULT;
- asm volatile(" sacf 256\n"
- " cs %1,%4,0(%5)\n"
- "0: lr %0,%1\n"
- "1: sacf 0\n"
-#ifndef __s390x__
- ".section __ex_table,\"a\"\n"
- " .align 4\n"
- " .long 0b,1b\n"
- ".previous"
-#else /* __s390x__ */
- ".section __ex_table,\"a\"\n"
- " .align 8\n"
- " .quad 0b,1b\n"
- ".previous"
-#endif /* __s390x__ */
- : "=d" (ret), "+d" (oldval), "=m" (*uaddr)
- : "0" (-EFAULT), "d" (newval), "a" (uaddr), "m" (*uaddr)
- : "cc", "memory" );
- return oldval;
+
+ return uaccess.futex_atomic_cmpxchg(uaddr, oldval, newval);
}
#endif /* __KERNEL__ */
#define outb(x,addr) ((void) writeb(x,addr))
#define outb_p(x,addr) outb(x,addr)
-#define mmiowb()
+#define mmiowb() do { } while (0)
/*
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
--- /dev/null
+#ifndef _S390_KDEBUG_H
+#define _S390_KDEBUG_H
+
+/*
+ * Feb 2006 Ported to s390 <grundym@us.ibm.com>
+ */
+#include <linux/notifier.h>
+
+struct pt_regs;
+
+struct die_args {
+ struct pt_regs *regs;
+ const char *str;
+ long err;
+ int trapnr;
+ int signr;
+};
+
+/* Note - you should never unregister because that can race with NMIs.
+ * If you really want to do it first unregister - then synchronize_sched
+ * - then free.
+ */
+extern int register_die_notifier(struct notifier_block *);
+extern int unregister_die_notifier(struct notifier_block *);
+extern int register_page_fault_notifier(struct notifier_block *);
+extern int unregister_page_fault_notifier(struct notifier_block *);
+extern struct atomic_notifier_head s390die_chain;
+
+
+enum die_val {
+ DIE_OOPS = 1,
+ DIE_BPT,
+ DIE_SSTEP,
+ DIE_PANIC,
+ DIE_NMI,
+ DIE_DIE,
+ DIE_NMIWATCHDOG,
+ DIE_KERNELDEBUG,
+ DIE_TRAP,
+ DIE_GPF,
+ DIE_CALL,
+ DIE_NMI_IPI,
+ DIE_PAGE_FAULT,
+};
+
+static inline int notify_die(enum die_val val, const char *str,
+ struct pt_regs *regs, long err, int trap, int sig)
+{
+ struct die_args args = {
+ .regs = regs,
+ .str = str,
+ .err = err,
+ .trapnr = trap,
+ .signr = sig
+ };
+ return atomic_notifier_call_chain(&s390die_chain, val, &args);
+}
+
+#endif
--- /dev/null
+#ifndef _ASM_S390_KPROBES_H
+#define _ASM_S390_KPROBES_H
+/*
+ * Kernel Probes (KProbes)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) IBM Corporation, 2002, 2006
+ *
+ * 2002-Oct Created by Vamsi Krishna S <vamsi_krishna@in.ibm.com> Kernel
+ * Probes initial implementation ( includes suggestions from
+ * Rusty Russell).
+ * 2004-Nov Modified for PPC64 by Ananth N Mavinakayanahalli
+ * <ananth@in.ibm.com>
+ * 2005-Dec Used as a template for s390 by Mike Grundy
+ * <grundym@us.ibm.com>
+ */
+#include <linux/types.h>
+#include <linux/ptrace.h>
+#include <linux/percpu.h>
+
+#define __ARCH_WANT_KPROBES_INSN_SLOT
+struct pt_regs;
+struct kprobe;
+
+typedef u16 kprobe_opcode_t;
+#define BREAKPOINT_INSTRUCTION 0x0002
+
+/* Maximum instruction size is 3 (16bit) halfwords: */
+#define MAX_INSN_SIZE 0x0003
+#define MAX_STACK_SIZE 64
+#define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \
+ (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \
+ ? (MAX_STACK_SIZE) \
+ : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))
+
+#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)(pentry)
+
+#define ARCH_SUPPORTS_KRETPROBES
+#define ARCH_INACTIVE_KPROBE_COUNT 0
+
+#define KPROBE_SWAP_INST 0x10
+
+#define FIXUP_PSW_NORMAL 0x08
+#define FIXUP_BRANCH_NOT_TAKEN 0x04
+#define FIXUP_RETURN_REGISTER 0x02
+#define FIXUP_NOT_REQUIRED 0x01
+
+/* Architecture specific copy of original instruction */
+struct arch_specific_insn {
+ /* copy of original instruction */
+ kprobe_opcode_t *insn;
+ int fixup;
+ int ilen;
+ int reg;
+};
+
+struct ins_replace_args {
+ kprobe_opcode_t *ptr;
+ kprobe_opcode_t old;
+ kprobe_opcode_t new;
+};
+struct prev_kprobe {
+ struct kprobe *kp;
+ unsigned long status;
+ unsigned long saved_psw;
+ unsigned long kprobe_saved_imask;
+ unsigned long kprobe_saved_ctl[3];
+};
+
+/* per-cpu kprobe control block */
+struct kprobe_ctlblk {
+ unsigned long kprobe_status;
+ unsigned long kprobe_saved_imask;
+ unsigned long kprobe_saved_ctl[3];
+ struct pt_regs jprobe_saved_regs;
+ unsigned long jprobe_saved_r14;
+ unsigned long jprobe_saved_r15;
+ struct prev_kprobe prev_kprobe;
+ kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE];
+};
+
+void arch_remove_kprobe(struct kprobe *p);
+void kretprobe_trampoline(void);
+int is_prohibited_opcode(kprobe_opcode_t *instruction);
+void get_instruction_type(struct arch_specific_insn *ainsn);
+
+#define flush_insn_slot(p) do { } while (0)
+
+#endif /* _ASM_S390_KPROBES_H */
+
+#ifdef CONFIG_KPROBES
+
+extern int kprobe_exceptions_notify(struct notifier_block *self,
+ unsigned long val, void *data);
+#else /* !CONFIG_KPROBES */
+static inline int kprobe_exceptions_notify(struct notifier_block *self,
+ unsigned long val, void *data)
+{
+ return 0;
+}
+#endif
#define __LC_IO_NEW_PSW 0x01f0
#endif /* !__s390x__ */
+#define __LC_IPL_PARMBLOCK_PTR 0x014
#define __LC_EXT_PARAMS 0x080
#define __LC_CPU_ADDRESS 0x084
#define __LC_EXT_INT_CODE 0x086
#define __LC_PER_ATMID 0x096
#define __LC_PER_ADDRESS 0x098
#define __LC_PER_ACCESS_ID 0x0A1
+#define __LC_AR_MODE_ID 0x0A3
#define __LC_SUBCHANNEL_ID 0x0B8
#define __LC_SUBCHANNEL_NR 0x0BA
#define __LC_INT_CLOCK 0xDE8
#endif /* __s390x__ */
-#define __LC_PANIC_MAGIC 0xE00
+#define __LC_PANIC_MAGIC 0xE00
#ifndef __s390x__
#define __LC_PFAULT_INTPARM 0x080
#define __LC_CPU_TIMER_SAVE_AREA 0x0D8
+#define __LC_CLOCK_COMP_SAVE_AREA 0x0E0
+#define __LC_PSW_SAVE_AREA 0x100
+#define __LC_PREFIX_SAVE_AREA 0x108
#define __LC_AREGS_SAVE_AREA 0x120
+#define __LC_FPREGS_SAVE_AREA 0x160
#define __LC_GPREGS_SAVE_AREA 0x180
#define __LC_CREGS_SAVE_AREA 0x1C0
#else /* __s390x__ */
#define __LC_PFAULT_INTPARM 0x11B8
+#define __LC_FPREGS_SAVE_AREA 0x1200
#define __LC_GPREGS_SAVE_AREA 0x1280
+#define __LC_PSW_SAVE_AREA 0x1300
+#define __LC_PREFIX_SAVE_AREA 0x1318
+#define __LC_FP_CREG_SAVE_AREA 0x131C
+#define __LC_TODREG_SAVE_AREA 0x1324
#define __LC_CPU_TIMER_SAVE_AREA 0x1328
+#define __LC_CLOCK_COMP_SAVE_AREA 0x1331
#define __LC_AREGS_SAVE_AREA 0x1340
#define __LC_CREGS_SAVE_AREA 0x1380
#endif /* __s390x__ */
--- /dev/null
+/*
+ * include/asm-s390/monwriter.h
+ *
+ * Copyright (C) IBM Corp. 2006
+ * Character device driver for writing z/VM APPLDATA monitor records
+ * Version 1.0
+ * Author(s): Melissa Howland <melissah@us.ibm.com>
+ *
+ */
+
+#ifndef _ASM_390_MONWRITER_H
+#define _ASM_390_MONWRITER_H
+
+/* mon_function values */
+#define MONWRITE_START_INTERVAL 0x00 /* start interval recording */
+#define MONWRITE_STOP_INTERVAL 0x01 /* stop interval or config recording */
+#define MONWRITE_GEN_EVENT 0x02 /* generate event record */
+#define MONWRITE_START_CONFIG 0x03 /* start configuration recording */
+
+/* the header the app uses in its write() data */
+struct monwrite_hdr {
+ unsigned char mon_function;
+ unsigned short applid;
+ unsigned char record_num;
+ unsigned short version;
+ unsigned short release;
+ unsigned short mod_level;
+ unsigned short datalen;
+ unsigned char hdrlen;
+
+} __attribute__((packed));
+
+#endif /* _ASM_390_MONWRITER_H */
extern void diag10(unsigned long addr);
+/*
+ * Page allocation orders.
+ */
+#ifndef __s390x__
+# define PGD_ALLOC_ORDER 1
+#else /* __s390x__ */
+# define PMD_ALLOC_ORDER 2
+# define PGD_ALLOC_ORDER 2
+#endif /* __s390x__ */
+
/*
* Allocate and free page tables. The xxx_kernel() versions are
* used to allocate a kernel page table - this turns on ASN bits
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
- pgd_t *pgd;
+ pgd_t *pgd = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ALLOC_ORDER);
int i;
+ if (!pgd)
+ return NULL;
+ for (i = 0; i < PTRS_PER_PGD; i++)
#ifndef __s390x__
- pgd = (pgd_t *) __get_free_pages(GFP_KERNEL,1);
- if (pgd != NULL)
- for (i = 0; i < USER_PTRS_PER_PGD; i++)
- pmd_clear(pmd_offset(pgd + i, i*PGDIR_SIZE));
-#else /* __s390x__ */
- pgd = (pgd_t *) __get_free_pages(GFP_KERNEL,2);
- if (pgd != NULL)
- for (i = 0; i < PTRS_PER_PGD; i++)
- pgd_clear(pgd + i);
-#endif /* __s390x__ */
+ pmd_clear(pmd_offset(pgd + i, i*PGDIR_SIZE));
+#else
+ pgd_clear(pgd + i);
+#endif
return pgd;
}
static inline void pgd_free(pgd_t *pgd)
{
-#ifndef __s390x__
- free_pages((unsigned long) pgd, 1);
-#else /* __s390x__ */
- free_pages((unsigned long) pgd, 2);
-#endif /* __s390x__ */
+ free_pages((unsigned long) pgd, PGD_ALLOC_ORDER);
}
#ifndef __s390x__
#else /* __s390x__ */
static inline pmd_t * pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
{
- pmd_t *pmd;
- int i;
+ pmd_t *pmd = (pmd_t *) __get_free_pages(GFP_KERNEL, PMD_ALLOC_ORDER);
+ int i;
- pmd = (pmd_t *) __get_free_pages(GFP_KERNEL, 2);
- if (pmd != NULL) {
- for (i=0; i < PTRS_PER_PMD; i++)
- pmd_clear(pmd+i);
- }
+ if (!pmd)
+ return NULL;
+ for (i=0; i < PTRS_PER_PMD; i++)
+ pmd_clear(pmd + i);
return pmd;
}
static inline void pmd_free (pmd_t *pmd)
{
- free_pages((unsigned long) pmd, 2);
+ free_pages((unsigned long) pmd, PMD_ALLOC_ORDER);
}
#define __pmd_free_tlb(tlb,pmd) \
static inline pte_t *
pte_alloc_one_kernel(struct mm_struct *mm, unsigned long vmaddr)
{
- pte_t *pte;
- int i;
-
- pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT);
- if (pte != NULL) {
- for (i=0; i < PTRS_PER_PTE; i++) {
- pte_clear(mm, vmaddr, pte+i);
- vmaddr += PAGE_SIZE;
- }
+ pte_t *pte = (pte_t *) __get_free_page(GFP_KERNEL|__GFP_REPEAT);
+ int i;
+
+ if (!pte)
+ return NULL;
+ for (i=0; i < PTRS_PER_PTE; i++) {
+ pte_clear(mm, vmaddr, pte + i);
+ vmaddr += PAGE_SIZE;
}
return pte;
}
# define PTRS_PER_PGD 2048
#endif /* __s390x__ */
-/*
- * pgd entries used up by user/kernel:
- */
-#ifndef __s390x__
-# define USER_PTRS_PER_PGD 512
-# define USER_PGD_PTRS 512
-# define KERNEL_PGD_PTRS 512
-#else /* __s390x__ */
-# define USER_PTRS_PER_PGD 2048
-# define USER_PGD_PTRS 2048
-# define KERNEL_PGD_PTRS 2048
-#endif /* __s390x__ */
-
#define FIRST_USER_ADDRESS 0
#define pte_ERROR(e) \
#define _PAGE_RO 0x200 /* HW read-only */
#define _PAGE_INVALID 0x400 /* HW invalid */
-/* Mask and four different kinds of invalid pages. */
-#define _PAGE_INVALID_MASK 0x601
-#define _PAGE_INVALID_EMPTY 0x400
-#define _PAGE_INVALID_NONE 0x401
-#define _PAGE_INVALID_SWAP 0x600
-#define _PAGE_INVALID_FILE 0x601
+/* Mask and six different types of pages. */
+#define _PAGE_TYPE_MASK 0x601
+#define _PAGE_TYPE_EMPTY 0x400
+#define _PAGE_TYPE_NONE 0x401
+#define _PAGE_TYPE_SWAP 0x600
+#define _PAGE_TYPE_FILE 0x601
+#define _PAGE_TYPE_RO 0x200
+#define _PAGE_TYPE_RW 0x000
#ifndef __s390x__
#endif /* __s390x__ */
/*
- * No mapping available
+ * Page protection definitions.
*/
-#define PAGE_NONE_SHARED __pgprot(_PAGE_INVALID_NONE)
-#define PAGE_NONE_PRIVATE __pgprot(_PAGE_INVALID_NONE)
-#define PAGE_RO_SHARED __pgprot(_PAGE_RO)
-#define PAGE_RO_PRIVATE __pgprot(_PAGE_RO)
-#define PAGE_COPY __pgprot(_PAGE_RO)
-#define PAGE_SHARED __pgprot(0)
-#define PAGE_KERNEL __pgprot(0)
+#define PAGE_NONE __pgprot(_PAGE_TYPE_NONE)
+#define PAGE_RO __pgprot(_PAGE_TYPE_RO)
+#define PAGE_RW __pgprot(_PAGE_TYPE_RW)
+
+#define PAGE_KERNEL PAGE_RW
+#define PAGE_COPY PAGE_RO
/*
* The S390 can't do page protection for execute, and considers that the
* the closest we can get..
*/
/*xwr*/
-#define __P000 PAGE_NONE_PRIVATE
-#define __P001 PAGE_RO_PRIVATE
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_RO_PRIVATE
-#define __P101 PAGE_RO_PRIVATE
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE_SHARED
-#define __S001 PAGE_RO_SHARED
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_RO_SHARED
-#define __S101 PAGE_RO_SHARED
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
+#define __P000 PAGE_NONE
+#define __P001 PAGE_RO
+#define __P010 PAGE_RO
+#define __P011 PAGE_RO
+#define __P100 PAGE_RO
+#define __P101 PAGE_RO
+#define __P110 PAGE_RO
+#define __P111 PAGE_RO
+
+#define __S000 PAGE_NONE
+#define __S001 PAGE_RO
+#define __S010 PAGE_RW
+#define __S011 PAGE_RW
+#define __S100 PAGE_RO
+#define __S101 PAGE_RO
+#define __S110 PAGE_RW
+#define __S111 PAGE_RW
/*
* Certain architectures need to do special things when PTEs
static inline int pte_none(pte_t pte)
{
- return (pte_val(pte) & _PAGE_INVALID_MASK) == _PAGE_INVALID_EMPTY;
+ return (pte_val(pte) & _PAGE_TYPE_MASK) == _PAGE_TYPE_EMPTY;
}
static inline int pte_present(pte_t pte)
{
return !(pte_val(pte) & _PAGE_INVALID) ||
- (pte_val(pte) & _PAGE_INVALID_MASK) == _PAGE_INVALID_NONE;
+ (pte_val(pte) & _PAGE_TYPE_MASK) == _PAGE_TYPE_NONE;
}
static inline int pte_file(pte_t pte)
{
- return (pte_val(pte) & _PAGE_INVALID_MASK) == _PAGE_INVALID_FILE;
+ return (pte_val(pte) & _PAGE_TYPE_MASK) == _PAGE_TYPE_FILE;
}
#define pte_same(a,b) (pte_val(a) == pte_val(b))
static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
- pte_val(*ptep) = _PAGE_INVALID_EMPTY;
+ pte_val(*ptep) = _PAGE_TYPE_EMPTY;
}
/*
static inline pte_t pte_wrprotect(pte_t pte)
{
- /* Do not clobber _PAGE_INVALID_NONE pages! */
+ /* Do not clobber _PAGE_TYPE_NONE pages! */
if (!(pte_val(pte) & _PAGE_INVALID))
pte_val(pte) |= _PAGE_RO;
return pte;
return pte;
}
-static inline pte_t
-ptep_clear_flush(struct vm_area_struct *vma,
- unsigned long address, pte_t *ptep)
+static inline void __ptep_ipte(unsigned long address, pte_t *ptep)
{
- pte_t pte = *ptep;
+ if (!(pte_val(*ptep) & _PAGE_INVALID)) {
#ifndef __s390x__
- if (!(pte_val(pte) & _PAGE_INVALID)) {
/* S390 has 1mb segments, we are emulating 4MB segments */
pte_t *pto = (pte_t *) (((unsigned long) ptep) & 0x7ffffc00);
- __asm__ __volatile__ ("ipte %2,%3"
- : "=m" (*ptep) : "m" (*ptep),
- "a" (pto), "a" (address) );
+#else
+ /* ipte in zarch mode can do the math */
+ pte_t *pto = ptep;
+#endif
+ asm volatile ("ipte %2,%3"
+ : "=m" (*ptep) : "m" (*ptep),
+ "a" (pto), "a" (address) );
}
-#else /* __s390x__ */
- if (!(pte_val(pte) & _PAGE_INVALID))
- __asm__ __volatile__ ("ipte %2,%3"
- : "=m" (*ptep) : "m" (*ptep),
- "a" (ptep), "a" (address) );
-#endif /* __s390x__ */
- pte_val(*ptep) = _PAGE_INVALID_EMPTY;
+ pte_val(*ptep) = _PAGE_TYPE_EMPTY;
+}
+
+static inline pte_t
+ptep_clear_flush(struct vm_area_struct *vma,
+ unsigned long address, pte_t *ptep)
+{
+ pte_t pte = *ptep;
+
+ __ptep_ipte(address, ptep);
return pte;
}
{
pte_t pte;
offset &= __SWP_OFFSET_MASK;
- pte_val(pte) = _PAGE_INVALID_SWAP | ((type & 0x1f) << 2) |
+ pte_val(pte) = _PAGE_TYPE_SWAP | ((type & 0x1f) << 2) |
((offset & 1UL) << 7) | ((offset & ~1UL) << 11);
return pte;
}
#define pgoff_to_pte(__off) \
((pte_t) { ((((__off) & 0x7f) << 1) + (((__off) >> 7) << 12)) \
- | _PAGE_INVALID_FILE })
+ | _PAGE_TYPE_FILE })
#endif /* !__ASSEMBLY__ */
#endif
+/*
+ * Helper macro for exception table entries
+ */
+#ifndef __s390x__
+#define EX_TABLE(_fault,_target) \
+ ".section __ex_table,\"a\"\n" \
+ " .align 4\n" \
+ " .long " #_fault "," #_target "\n" \
+ ".previous\n"
+#else
+#define EX_TABLE(_fault,_target) \
+ ".section __ex_table,\"a\"\n" \
+ " .align 8\n" \
+ " .quad " #_fault "," #_target "\n" \
+ ".previous\n"
+#endif
+
#endif /* __ASM_S390_PROCESSOR_H */
#define PARMAREA 0x10400
#define COMMAND_LINE_SIZE 896
-#define RAMDISK_ORIGIN 0x800000
-#define RAMDISK_SIZE 0x800000
#define MEMORY_CHUNKS 16 /* max 0x7fff */
#define IPL_PARMBLOCK_ORIGIN 0x2000
#define MACHINE_HAS_IEEE (machine_flags & 2)
#define MACHINE_HAS_CSP (machine_flags & 8)
#define MACHINE_HAS_DIAG44 (1)
+#define MACHINE_HAS_MVCOS (0)
#else /* __s390x__ */
#define MACHINE_HAS_IEEE (1)
#define MACHINE_HAS_CSP (1)
#define MACHINE_HAS_DIAG44 (machine_flags & 32)
+#define MACHINE_HAS_MVCOS (machine_flags & 512)
#endif /* __s390x__ */
#define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
#define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
-struct ipl_list_header {
- u32 length;
- u8 reserved[3];
+
+struct ipl_list_hdr {
+ u32 len;
+ u8 reserved1[3];
u8 version;
+ u32 blk0_len;
+ u8 pbt;
+ u8 flags;
+ u16 reserved2;
} __attribute__((packed));
struct ipl_block_fcp {
- u32 length;
- u8 pbt;
- u8 reserved1[322-1];
+ u8 reserved1[313-1];
+ u8 opt;
+ u8 reserved2[3];
+ u16 reserved3;
u16 devno;
- u8 reserved2[4];
+ u8 reserved4[4];
u64 wwpn;
u64 lun;
u32 bootprog;
- u8 reserved3[12];
+ u8 reserved5[12];
u64 br_lba;
u32 scp_data_len;
- u8 reserved4[260];
+ u8 reserved6[260];
u8 scp_data[];
} __attribute__((packed));
+struct ipl_block_ccw {
+ u8 load_param[8];
+ u8 reserved1[84];
+ u8 reserved2[2];
+ u16 devno;
+ u8 vm_flags;
+ u8 reserved3[3];
+ u32 vm_parm_len;
+} __attribute__((packed));
+
struct ipl_parameter_block {
+ struct ipl_list_hdr hdr;
union {
- u32 length;
- struct ipl_list_header header;
- } hdr;
- struct ipl_block_fcp fcp;
+ struct ipl_block_fcp fcp;
+ struct ipl_block_ccw ccw;
+ } ipl_info;
} __attribute__((packed));
-#define IPL_MAX_SUPPORTED_VERSION (0)
+#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \
+ sizeof(struct ipl_block_fcp))
-#define IPL_TYPE_FCP (0)
+#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \
+ sizeof(struct ipl_block_ccw))
+
+#define IPL_MAX_SUPPORTED_VERSION (0)
/*
* IPL validity flags and parameters as detected in head.S
*/
-extern u32 ipl_parameter_flags;
+extern u32 ipl_flags;
extern u16 ipl_devno;
-#define IPL_DEVNO_VALID (ipl_parameter_flags & 1)
-#define IPL_PARMBLOCK_VALID (ipl_parameter_flags & 2)
+void do_reipl(void);
+
+enum {
+ IPL_DEVNO_VALID = 1,
+ IPL_PARMBLOCK_VALID = 2,
+};
#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
IPL_PARMBLOCK_ORIGIN)
-#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.length)
+#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
#else /* __ASSEMBLY__ */
#define smp_cpu_not_running(cpu) 1
#define smp_get_cpu(cpu) ({ 0; })
#define smp_put_cpu(cpu) ({ 0; })
-#define smp_setup_cpu_possible_map()
+#define smp_setup_cpu_possible_map() do { } while (0)
#endif
#endif
S390_lowcore.user_asce : S390_lowcore.kernel_asce; \
asm volatile ("lctlg 7,7,%0" : : "m" (__pto) ); \
})
-#else
+#else /* __s390x__ */
#define set_fs(x) \
({ \
unsigned long __pto; \
S390_lowcore.user_asce : S390_lowcore.kernel_asce; \
asm volatile ("lctl 7,7,%0" : : "m" (__pto) ); \
})
-#endif
+#endif /* __s390x__ */
#define segment_eq(a,b) ((a).ar4 == (b).ar4)
unsigned long insn, fixup;
};
-#ifndef __s390x__
-#define __uaccess_fixup \
- ".section .fixup,\"ax\"\n" \
- "2: lhi %0,%4\n" \
- " bras 1,3f\n" \
- " .long 1b\n" \
- "3: l 1,0(1)\n" \
- " br 1\n" \
- ".previous\n" \
- ".section __ex_table,\"a\"\n" \
- " .align 4\n" \
- " .long 0b,2b\n" \
- ".previous"
-#define __uaccess_clobber "cc", "1"
-#else /* __s390x__ */
-#define __uaccess_fixup \
- ".section .fixup,\"ax\"\n" \
- "2: lghi %0,%4\n" \
- " jg 1b\n" \
- ".previous\n" \
- ".section __ex_table,\"a\"\n" \
- " .align 8\n" \
- " .quad 0b,2b\n" \
- ".previous"
-#define __uaccess_clobber "cc"
-#endif /* __s390x__ */
+struct uaccess_ops {
+ size_t (*copy_from_user)(size_t, const void __user *, void *);
+ size_t (*copy_from_user_small)(size_t, const void __user *, void *);
+ size_t (*copy_to_user)(size_t, void __user *, const void *);
+ size_t (*copy_to_user_small)(size_t, void __user *, const void *);
+ size_t (*copy_in_user)(size_t, void __user *, const void __user *);
+ size_t (*clear_user)(size_t, void __user *);
+ size_t (*strnlen_user)(size_t, const char __user *);
+ size_t (*strncpy_from_user)(size_t, const char __user *, char *);
+ int (*futex_atomic_op)(int op, int __user *, int oparg, int *old);
+ int (*futex_atomic_cmpxchg)(int __user *, int old, int new);
+};
+
+extern struct uaccess_ops uaccess;
+extern struct uaccess_ops uaccess_std;
+extern struct uaccess_ops uaccess_mvcos;
+
+static inline int __put_user_fn(size_t size, void __user *ptr, void *x)
+{
+ size = uaccess.copy_to_user_small(size, ptr, x);
+ return size ? -EFAULT : size;
+}
+
+static inline int __get_user_fn(size_t size, const void __user *ptr, void *x)
+{
+ size = uaccess.copy_from_user_small(size, ptr, x);
+ return size ? -EFAULT : size;
+}
/*
* These are the main single-value transfer routines. They automatically
* use the right size if we just have the right pointer type.
*/
-#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
-#define __put_user_asm(x, ptr, err) \
-({ \
- err = 0; \
- asm volatile( \
- "0: mvcs 0(%1,%2),%3,%0\n" \
- "1:\n" \
- __uaccess_fixup \
- : "+&d" (err) \
- : "d" (sizeof(*(ptr))), "a" (ptr), "Q" (x), \
- "K" (-EFAULT) \
- : __uaccess_clobber ); \
-})
-#else
-#define __put_user_asm(x, ptr, err) \
-({ \
- err = 0; \
- asm volatile( \
- "0: mvcs 0(%1,%2),0(%3),%0\n" \
- "1:\n" \
- __uaccess_fixup \
- : "+&d" (err) \
- : "d" (sizeof(*(ptr))), "a" (ptr), "a" (&(x)), \
- "K" (-EFAULT), "m" (x) \
- : __uaccess_clobber ); \
-})
-#endif
-
#define __put_user(x, ptr) \
({ \
__typeof__(*(ptr)) __x = (x); \
- int __pu_err; \
+ int __pu_err = -EFAULT; \
__chk_user_ptr(ptr); \
switch (sizeof (*(ptr))) { \
case 1: \
case 2: \
case 4: \
case 8: \
- __put_user_asm(__x, ptr, __pu_err); \
+ __pu_err = __put_user_fn(sizeof (*(ptr)), \
+ ptr, &__x); \
break; \
default: \
__put_user_bad(); \
extern int __put_user_bad(void) __attribute__((noreturn));
-#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
-#define __get_user_asm(x, ptr, err) \
-({ \
- err = 0; \
- asm volatile ( \
- "0: mvcp %O1(%2,%R1),0(%3),%0\n" \
- "1:\n" \
- __uaccess_fixup \
- : "+&d" (err), "=Q" (x) \
- : "d" (sizeof(*(ptr))), "a" (ptr), \
- "K" (-EFAULT) \
- : __uaccess_clobber ); \
-})
-#else
-#define __get_user_asm(x, ptr, err) \
-({ \
- err = 0; \
- asm volatile ( \
- "0: mvcp 0(%2,%5),0(%3),%0\n" \
- "1:\n" \
- __uaccess_fixup \
- : "+&d" (err), "=m" (x) \
- : "d" (sizeof(*(ptr))), "a" (ptr), \
- "K" (-EFAULT), "a" (&(x)) \
- : __uaccess_clobber ); \
-})
-#endif
-
#define __get_user(x, ptr) \
({ \
- int __gu_err; \
- __chk_user_ptr(ptr); \
+ int __gu_err = -EFAULT; \
+ __chk_user_ptr(ptr); \
switch (sizeof(*(ptr))) { \
case 1: { \
unsigned char __x; \
- __get_user_asm(__x, ptr, __gu_err); \
+ __gu_err = __get_user_fn(sizeof (*(ptr)), \
+ ptr, &__x); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
case 2: { \
unsigned short __x; \
- __get_user_asm(__x, ptr, __gu_err); \
+ __gu_err = __get_user_fn(sizeof (*(ptr)), \
+ ptr, &__x); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
case 4: { \
unsigned int __x; \
- __get_user_asm(__x, ptr, __gu_err); \
+ __gu_err = __get_user_fn(sizeof (*(ptr)), \
+ ptr, &__x); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
case 8: { \
unsigned long long __x; \
- __get_user_asm(__x, ptr, __gu_err); \
+ __gu_err = __get_user_fn(sizeof (*(ptr)), \
+ ptr, &__x); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
#define __put_user_unaligned __put_user
#define __get_user_unaligned __get_user
-extern long __copy_to_user_asm(const void *from, long n, void __user *to);
-
/**
* __copy_to_user: - Copy a block of data into user space, with less checking.
* @to: Destination address, in user space.
static inline unsigned long
__copy_to_user(void __user *to, const void *from, unsigned long n)
{
- return __copy_to_user_asm(from, n, to);
+ if (__builtin_constant_p(n) && (n <= 256))
+ return uaccess.copy_to_user_small(n, to, from);
+ else
+ return uaccess.copy_to_user(n, to, from);
}
#define __copy_to_user_inatomic __copy_to_user
return n;
}
-extern long __copy_from_user_asm(void *to, long n, const void __user *from);
-
/**
* __copy_from_user: - Copy a block of data from user space, with less checking.
* @to: Destination address, in kernel space.
static inline unsigned long
__copy_from_user(void *to, const void __user *from, unsigned long n)
{
- return __copy_from_user_asm(to, n, from);
+ if (__builtin_constant_p(n) && (n <= 256))
+ return uaccess.copy_from_user_small(n, from, to);
+ else
+ return uaccess.copy_from_user(n, from, to);
}
/**
return n;
}
-extern unsigned long __copy_in_user_asm(const void __user *from, long n,
- void __user *to);
-
static inline unsigned long
__copy_in_user(void __user *to, const void __user *from, unsigned long n)
{
- return __copy_in_user_asm(from, n, to);
+ return uaccess.copy_in_user(n, to, from);
}
static inline unsigned long
{
might_sleep();
if (__access_ok(from,n) && __access_ok(to,n))
- n = __copy_in_user_asm(from, n, to);
+ n = __copy_in_user(to, from, n);
return n;
}
/*
* Copy a null terminated string from userspace.
*/
-extern long __strncpy_from_user_asm(long count, char *dst,
- const char __user *src);
-
static inline long
strncpy_from_user(char *dst, const char __user *src, long count)
{
long res = -EFAULT;
might_sleep();
if (access_ok(VERIFY_READ, src, 1))
- res = __strncpy_from_user_asm(count, dst, src);
+ res = uaccess.strncpy_from_user(count, src, dst);
return res;
}
-
-extern long __strnlen_user_asm(long count, const char __user *src);
-
static inline unsigned long
strnlen_user(const char __user * src, unsigned long n)
{
might_sleep();
- return __strnlen_user_asm(n, src);
+ return uaccess.strnlen_user(n, src);
}
/**
* Zero Userspace
*/
-extern long __clear_user_asm(void __user *to, long n);
-
static inline unsigned long
__clear_user(void __user *to, unsigned long n)
{
- return __clear_user_asm(to, n);
+ return uaccess.clear_user(n, to);
}
static inline unsigned long
{
might_sleep();
if (access_ok(VERIFY_WRITE, to, n))
- n = __clear_user_asm(to, n);
+ n = uaccess.clear_user(n, to);
return n;
}
#define __NR_unlink 10
#define __NR_execve 11
#define __NR_chdir 12
-#define __NR_time 13
#define __NR_mknod 14
#define __NR_chmod 15
-#define __NR_lchown 16
#define __NR_lseek 19
#define __NR_getpid 20
#define __NR_mount 21
#define __NR_umount 22
-#define __NR_setuid 23
-#define __NR_getuid 24
-#define __NR_stime 25
#define __NR_ptrace 26
#define __NR_alarm 27
#define __NR_pause 29
#define __NR_pipe 42
#define __NR_times 43
#define __NR_brk 45
-#define __NR_setgid 46
-#define __NR_getgid 47
#define __NR_signal 48
-#define __NR_geteuid 49
-#define __NR_getegid 50
#define __NR_acct 51
#define __NR_umount2 52
#define __NR_ioctl 54
#define __NR_getpgrp 65
#define __NR_setsid 66
#define __NR_sigaction 67
-#define __NR_setreuid 70
-#define __NR_setregid 71
#define __NR_sigsuspend 72
#define __NR_sigpending 73
#define __NR_sethostname 74
#define __NR_setrlimit 75
-#define __NR_getrlimit 76
#define __NR_getrusage 77
#define __NR_gettimeofday 78
#define __NR_settimeofday 79
-#define __NR_getgroups 80
-#define __NR_setgroups 81
#define __NR_symlink 83
#define __NR_readlink 85
#define __NR_uselib 86
#define __NR_truncate 92
#define __NR_ftruncate 93
#define __NR_fchmod 94
-#define __NR_fchown 95
#define __NR_getpriority 96
#define __NR_setpriority 97
#define __NR_statfs 99
#define __NR_fstatfs 100
-#define __NR_ioperm 101
#define __NR_socketcall 102
#define __NR_syslog 103
#define __NR_setitimer 104
#define __NR_sysfs 135
#define __NR_personality 136
#define __NR_afs_syscall 137 /* Syscall for Andrew File System */
-#define __NR_setfsuid 138
-#define __NR_setfsgid 139
-#define __NR__llseek 140
#define __NR_getdents 141
-#define __NR__newselect 142
#define __NR_flock 143
#define __NR_msync 144
#define __NR_readv 145
#define __NR_sched_rr_get_interval 161
#define __NR_nanosleep 162
#define __NR_mremap 163
-#define __NR_setresuid 164
-#define __NR_getresuid 165
#define __NR_query_module 167
#define __NR_poll 168
#define __NR_nfsservctl 169
-#define __NR_setresgid 170
-#define __NR_getresgid 171
#define __NR_prctl 172
#define __NR_rt_sigreturn 173
#define __NR_rt_sigaction 174
#define __NR_rt_sigsuspend 179
#define __NR_pread64 180
#define __NR_pwrite64 181
-#define __NR_chown 182
#define __NR_getcwd 183
#define __NR_capget 184
#define __NR_capset 185
#define __NR_getpmsg 188
#define __NR_putpmsg 189
#define __NR_vfork 190
-#define __NR_ugetrlimit 191 /* SuS compliant getrlimit */
-#define __NR_mmap2 192
-#define __NR_truncate64 193
-#define __NR_ftruncate64 194
-#define __NR_stat64 195
-#define __NR_lstat64 196
-#define __NR_fstat64 197
-#define __NR_lchown32 198
-#define __NR_getuid32 199
-#define __NR_getgid32 200
-#define __NR_geteuid32 201
-#define __NR_getegid32 202
-#define __NR_setreuid32 203
-#define __NR_setregid32 204
-#define __NR_getgroups32 205
-#define __NR_setgroups32 206
-#define __NR_fchown32 207
-#define __NR_setresuid32 208
-#define __NR_getresuid32 209
-#define __NR_setresgid32 210
-#define __NR_getresgid32 211
-#define __NR_chown32 212
-#define __NR_setuid32 213
-#define __NR_setgid32 214
-#define __NR_setfsuid32 215
-#define __NR_setfsgid32 216
#define __NR_pivot_root 217
#define __NR_mincore 218
#define __NR_madvise 219
#define __NR_getdents64 220
-#define __NR_fcntl64 221
#define __NR_readahead 222
-#define __NR_sendfile64 223
#define __NR_setxattr 224
#define __NR_lsetxattr 225
#define __NR_fsetxattr 226
#define __NR_clock_getres (__NR_timer_create+7)
#define __NR_clock_nanosleep (__NR_timer_create+8)
/* Number 263 is reserved for vserver */
-#define __NR_fadvise64_64 264
#define __NR_statfs64 265
#define __NR_fstatfs64 266
#define __NR_remap_file_pages 267
#define __NR_mknodat 290
#define __NR_fchownat 291
#define __NR_futimesat 292
-#define __NR_fstatat64 293
#define __NR_unlinkat 294
#define __NR_renameat 295
#define __NR_linkat 296
* have a different name although they do the same (e.g. __NR_chown32
* is __NR_chown on 64 bit).
*/
-#ifdef __s390x__
-#undef __NR_time
-#undef __NR_lchown
-#undef __NR_setuid
-#undef __NR_getuid
-#undef __NR_stime
-#undef __NR_setgid
-#undef __NR_getgid
-#undef __NR_geteuid
-#undef __NR_getegid
-#undef __NR_setreuid
-#undef __NR_setregid
-#undef __NR_getrlimit
-#undef __NR_getgroups
-#undef __NR_setgroups
-#undef __NR_fchown
-#undef __NR_ioperm
-#undef __NR_setfsuid
-#undef __NR_setfsgid
-#undef __NR__llseek
-#undef __NR__newselect
-#undef __NR_setresuid
-#undef __NR_getresuid
-#undef __NR_setresgid
-#undef __NR_getresgid
-#undef __NR_chown
-#undef __NR_ugetrlimit
-#undef __NR_mmap2
-#undef __NR_truncate64
-#undef __NR_ftruncate64
-#undef __NR_stat64
-#undef __NR_lstat64
-#undef __NR_fstat64
-#undef __NR_lchown32
-#undef __NR_getuid32
-#undef __NR_getgid32
-#undef __NR_geteuid32
-#undef __NR_getegid32
-#undef __NR_setreuid32
-#undef __NR_setregid32
-#undef __NR_getgroups32
-#undef __NR_setgroups32
-#undef __NR_fchown32
-#undef __NR_setresuid32
-#undef __NR_getresuid32
-#undef __NR_setresgid32
-#undef __NR_getresgid32
-#undef __NR_chown32
-#undef __NR_setuid32
-#undef __NR_setgid32
-#undef __NR_setfsuid32
-#undef __NR_setfsgid32
-#undef __NR_fcntl64
-#undef __NR_sendfile64
-#undef __NR_fadvise64_64
-#undef __NR_fstatat64
+#ifndef __s390x__
+
+#define __NR_time 13
+#define __NR_lchown 16
+#define __NR_setuid 23
+#define __NR_getuid 24
+#define __NR_stime 25
+#define __NR_setgid 46
+#define __NR_getgid 47
+#define __NR_geteuid 49
+#define __NR_getegid 50
+#define __NR_setreuid 70
+#define __NR_setregid 71
+#define __NR_getrlimit 76
+#define __NR_getgroups 80
+#define __NR_setgroups 81
+#define __NR_fchown 95
+#define __NR_ioperm 101
+#define __NR_setfsuid 138
+#define __NR_setfsgid 139
+#define __NR__llseek 140
+#define __NR__newselect 142
+#define __NR_setresuid 164
+#define __NR_getresuid 165
+#define __NR_setresgid 170
+#define __NR_getresgid 171
+#define __NR_chown 182
+#define __NR_ugetrlimit 191 /* SuS compliant getrlimit */
+#define __NR_mmap2 192
+#define __NR_truncate64 193
+#define __NR_ftruncate64 194
+#define __NR_stat64 195
+#define __NR_lstat64 196
+#define __NR_fstat64 197
+#define __NR_lchown32 198
+#define __NR_getuid32 199
+#define __NR_getgid32 200
+#define __NR_geteuid32 201
+#define __NR_getegid32 202
+#define __NR_setreuid32 203
+#define __NR_setregid32 204
+#define __NR_getgroups32 205
+#define __NR_setgroups32 206
+#define __NR_fchown32 207
+#define __NR_setresuid32 208
+#define __NR_getresuid32 209
+#define __NR_setresgid32 210
+#define __NR_getresgid32 211
+#define __NR_chown32 212
+#define __NR_setuid32 213
+#define __NR_setgid32 214
+#define __NR_setfsuid32 215
+#define __NR_setfsgid32 216
+#define __NR_fcntl64 221
+#define __NR_sendfile64 223
+#define __NR_fadvise64_64 264
+#define __NR_fstatat64 293
+
+#else
#define __NR_select 142
#define __NR_getrlimit 191 /* SuS compliant getrlimit */
+++ /dev/null
-/*
- * include/asm-s390/z90crypt.h
- *
- * z90crypt 1.3.3 (user-visible header)
- *
- * Copyright (C) 2001, 2005 IBM Corporation
- * Author(s): Robert Burroughs
- * Eric Rossman (edrossma@us.ibm.com)
- *
- * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef __ASM_S390_Z90CRYPT_H
-#define __ASM_S390_Z90CRYPT_H
-#include <linux/ioctl.h>
-
-#define z90crypt_VERSION 1
-#define z90crypt_RELEASE 3 // 2 = PCIXCC, 3 = rewrite for coding standards
-#define z90crypt_VARIANT 3 // 3 = CEX2A support
-
-/**
- * struct ica_rsa_modexpo
- *
- * Requirements:
- * - outputdatalength is at least as large as inputdatalength.
- * - All key parts are right justified in their fields, padded on
- * the left with zeroes.
- * - length(b_key) = inputdatalength
- * - length(n_modulus) = inputdatalength
- */
-struct ica_rsa_modexpo {
- char __user * inputdata;
- unsigned int inputdatalength;
- char __user * outputdata;
- unsigned int outputdatalength;
- char __user * b_key;
- char __user * n_modulus;
-};
-
-/**
- * struct ica_rsa_modexpo_crt
- *
- * Requirements:
- * - inputdatalength is even.
- * - outputdatalength is at least as large as inputdatalength.
- * - All key parts are right justified in their fields, padded on
- * the left with zeroes.
- * - length(bp_key) = inputdatalength/2 + 8
- * - length(bq_key) = inputdatalength/2
- * - length(np_key) = inputdatalength/2 + 8
- * - length(nq_key) = inputdatalength/2
- * - length(u_mult_inv) = inputdatalength/2 + 8
- */
-struct ica_rsa_modexpo_crt {
- char __user * inputdata;
- unsigned int inputdatalength;
- char __user * outputdata;
- unsigned int outputdatalength;
- char __user * bp_key;
- char __user * bq_key;
- char __user * np_prime;
- char __user * nq_prime;
- char __user * u_mult_inv;
-};
-
-#define Z90_IOCTL_MAGIC 'z' // NOTE: Need to allocate from linux folks
-
-/**
- * Interface notes:
- *
- * The ioctl()s which are implemented (along with relevant details)
- * are:
- *
- * ICARSAMODEXPO
- * Perform an RSA operation using a Modulus-Exponent pair
- * This takes an ica_rsa_modexpo struct as its arg.
- *
- * NOTE: please refer to the comments preceding this structure
- * for the implementation details for the contents of the
- * block
- *
- * ICARSACRT
- * Perform an RSA operation using a Chinese-Remainder Theorem key
- * This takes an ica_rsa_modexpo_crt struct as its arg.
- *
- * NOTE: please refer to the comments preceding this structure
- * for the implementation details for the contents of the
- * block
- *
- * Z90STAT_TOTALCOUNT
- * Return an integer count of all device types together.
- *
- * Z90STAT_PCICACOUNT
- * Return an integer count of all PCICAs.
- *
- * Z90STAT_PCICCCOUNT
- * Return an integer count of all PCICCs.
- *
- * Z90STAT_PCIXCCMCL2COUNT
- * Return an integer count of all MCL2 PCIXCCs.
- *
- * Z90STAT_PCIXCCMCL3COUNT
- * Return an integer count of all MCL3 PCIXCCs.
- *
- * Z90STAT_CEX2CCOUNT
- * Return an integer count of all CEX2Cs.
- *
- * Z90STAT_CEX2ACOUNT
- * Return an integer count of all CEX2As.
- *
- * Z90STAT_REQUESTQ_COUNT
- * Return an integer count of the number of entries waiting to be
- * sent to a device.
- *
- * Z90STAT_PENDINGQ_COUNT
- * Return an integer count of the number of entries sent to a
- * device awaiting the reply.
- *
- * Z90STAT_TOTALOPEN_COUNT
- * Return an integer count of the number of open file handles.
- *
- * Z90STAT_DOMAIN_INDEX
- * Return the integer value of the Cryptographic Domain.
- *
- * Z90STAT_STATUS_MASK
- * Return an 64 element array of unsigned chars for the status of
- * all devices.
- * 0x01: PCICA
- * 0x02: PCICC
- * 0x03: PCIXCC_MCL2
- * 0x04: PCIXCC_MCL3
- * 0x05: CEX2C
- * 0x06: CEX2A
- * 0x0d: device is disabled via the proc filesystem
- *
- * Z90STAT_QDEPTH_MASK
- * Return an 64 element array of unsigned chars for the queue
- * depth of all devices.
- *
- * Z90STAT_PERDEV_REQCNT
- * Return an 64 element array of unsigned integers for the number
- * of successfully completed requests per device since the device
- * was detected and made available.
- *
- * ICAZ90STATUS (deprecated)
- * Return some device driver status in a ica_z90_status struct
- * This takes an ica_z90_status struct as its arg.
- *
- * NOTE: this ioctl() is deprecated, and has been replaced with
- * single ioctl()s for each type of status being requested
- *
- * Z90STAT_PCIXCCCOUNT (deprecated)
- * Return an integer count of all PCIXCCs (MCL2 + MCL3).
- * This is DEPRECATED now that MCL3 PCIXCCs are treated differently from
- * MCL2 PCIXCCs.
- *
- * Z90QUIESCE (not recommended)
- * Quiesce the driver. This is intended to stop all new
- * requests from being processed. Its use is NOT recommended,
- * except in circumstances where there is no other way to stop
- * callers from accessing the driver. Its original use was to
- * allow the driver to be "drained" of work in preparation for
- * a system shutdown.
- *
- * NOTE: once issued, this ban on new work cannot be undone
- * except by unloading and reloading the driver.
- */
-
-/**
- * Supported ioctl calls
- */
-#define ICARSAMODEXPO _IOC(_IOC_READ|_IOC_WRITE, Z90_IOCTL_MAGIC, 0x05, 0)
-#define ICARSACRT _IOC(_IOC_READ|_IOC_WRITE, Z90_IOCTL_MAGIC, 0x06, 0)
-
-/* DEPRECATED status calls (bound for removal at some point) */
-#define ICAZ90STATUS _IOR(Z90_IOCTL_MAGIC, 0x10, struct ica_z90_status)
-#define Z90STAT_PCIXCCCOUNT _IOR(Z90_IOCTL_MAGIC, 0x43, int)
-
-/* unrelated to ICA callers */
-#define Z90QUIESCE _IO(Z90_IOCTL_MAGIC, 0x11)
-
-/* New status calls */
-#define Z90STAT_TOTALCOUNT _IOR(Z90_IOCTL_MAGIC, 0x40, int)
-#define Z90STAT_PCICACOUNT _IOR(Z90_IOCTL_MAGIC, 0x41, int)
-#define Z90STAT_PCICCCOUNT _IOR(Z90_IOCTL_MAGIC, 0x42, int)
-#define Z90STAT_PCIXCCMCL2COUNT _IOR(Z90_IOCTL_MAGIC, 0x4b, int)
-#define Z90STAT_PCIXCCMCL3COUNT _IOR(Z90_IOCTL_MAGIC, 0x4c, int)
-#define Z90STAT_CEX2CCOUNT _IOR(Z90_IOCTL_MAGIC, 0x4d, int)
-#define Z90STAT_CEX2ACOUNT _IOR(Z90_IOCTL_MAGIC, 0x4e, int)
-#define Z90STAT_REQUESTQ_COUNT _IOR(Z90_IOCTL_MAGIC, 0x44, int)
-#define Z90STAT_PENDINGQ_COUNT _IOR(Z90_IOCTL_MAGIC, 0x45, int)
-#define Z90STAT_TOTALOPEN_COUNT _IOR(Z90_IOCTL_MAGIC, 0x46, int)
-#define Z90STAT_DOMAIN_INDEX _IOR(Z90_IOCTL_MAGIC, 0x47, int)
-#define Z90STAT_STATUS_MASK _IOR(Z90_IOCTL_MAGIC, 0x48, char[64])
-#define Z90STAT_QDEPTH_MASK _IOR(Z90_IOCTL_MAGIC, 0x49, char[64])
-#define Z90STAT_PERDEV_REQCNT _IOR(Z90_IOCTL_MAGIC, 0x4a, int[64])
-
-#endif /* __ASM_S390_Z90CRYPT_H */
--- /dev/null
+/*
+ * include/asm-s390/zcrypt.h
+ *
+ * zcrypt 2.1.0 (user-visible header)
+ *
+ * Copyright (C) 2001, 2006 IBM Corporation
+ * Author(s): Robert Burroughs
+ * Eric Rossman (edrossma@us.ibm.com)
+ *
+ * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __ASM_S390_ZCRYPT_H
+#define __ASM_S390_ZCRYPT_H
+
+#define ZCRYPT_VERSION 2
+#define ZCRYPT_RELEASE 1
+#define ZCRYPT_VARIANT 0
+
+#include <linux/ioctl.h>
+#include <linux/compiler.h>
+
+/**
+ * struct ica_rsa_modexpo
+ *
+ * Requirements:
+ * - outputdatalength is at least as large as inputdatalength.
+ * - All key parts are right justified in their fields, padded on
+ * the left with zeroes.
+ * - length(b_key) = inputdatalength
+ * - length(n_modulus) = inputdatalength
+ */
+struct ica_rsa_modexpo {
+ char __user * inputdata;
+ unsigned int inputdatalength;
+ char __user * outputdata;
+ unsigned int outputdatalength;
+ char __user * b_key;
+ char __user * n_modulus;
+};
+
+/**
+ * struct ica_rsa_modexpo_crt
+ *
+ * Requirements:
+ * - inputdatalength is even.
+ * - outputdatalength is at least as large as inputdatalength.
+ * - All key parts are right justified in their fields, padded on
+ * the left with zeroes.
+ * - length(bp_key) = inputdatalength/2 + 8
+ * - length(bq_key) = inputdatalength/2
+ * - length(np_key) = inputdatalength/2 + 8
+ * - length(nq_key) = inputdatalength/2
+ * - length(u_mult_inv) = inputdatalength/2 + 8
+ */
+struct ica_rsa_modexpo_crt {
+ char __user * inputdata;
+ unsigned int inputdatalength;
+ char __user * outputdata;
+ unsigned int outputdatalength;
+ char __user * bp_key;
+ char __user * bq_key;
+ char __user * np_prime;
+ char __user * nq_prime;
+ char __user * u_mult_inv;
+};
+
+/**
+ * CPRBX
+ * Note that all shorts and ints are big-endian.
+ * All pointer fields are 16 bytes long, and mean nothing.
+ *
+ * A request CPRB is followed by a request_parameter_block.
+ *
+ * The request (or reply) parameter block is organized thus:
+ * function code
+ * VUD block
+ * key block
+ */
+struct ica_CPRBX {
+ unsigned short cprb_len; /* CPRB length 220 */
+ unsigned char cprb_ver_id; /* CPRB version id. 0x02 */
+ unsigned char pad_000[3]; /* Alignment pad bytes */
+ unsigned char func_id[2]; /* function id 0x5432 */
+ unsigned char cprb_flags[4]; /* Flags */
+ unsigned int req_parml; /* request parameter buffer len */
+ unsigned int req_datal; /* request data buffer */
+ unsigned int rpl_msgbl; /* reply message block length */
+ unsigned int rpld_parml; /* replied parameter block len */
+ unsigned int rpl_datal; /* reply data block len */
+ unsigned int rpld_datal; /* replied data block len */
+ unsigned int req_extbl; /* request extension block len */
+ unsigned char pad_001[4]; /* reserved */
+ unsigned int rpld_extbl; /* replied extension block len */
+ unsigned char padx000[16 - sizeof (char *)];
+ unsigned char * req_parmb; /* request parm block 'address' */
+ unsigned char padx001[16 - sizeof (char *)];
+ unsigned char * req_datab; /* request data block 'address' */
+ unsigned char padx002[16 - sizeof (char *)];
+ unsigned char * rpl_parmb; /* reply parm block 'address' */
+ unsigned char padx003[16 - sizeof (char *)];
+ unsigned char * rpl_datab; /* reply data block 'address' */
+ unsigned char padx004[16 - sizeof (char *)];
+ unsigned char * req_extb; /* request extension block 'addr'*/
+ unsigned char padx005[16 - sizeof (char *)];
+ unsigned char * rpl_extb; /* reply extension block 'addres'*/
+ unsigned short ccp_rtcode; /* server return code */
+ unsigned short ccp_rscode; /* server reason code */
+ unsigned int mac_data_len; /* Mac Data Length */
+ unsigned char logon_id[8]; /* Logon Identifier */
+ unsigned char mac_value[8]; /* Mac Value */
+ unsigned char mac_content_flgs;/* Mac content flag byte */
+ unsigned char pad_002; /* Alignment */
+ unsigned short domain; /* Domain */
+ unsigned char usage_domain[4];/* Usage domain */
+ unsigned char cntrl_domain[4];/* Control domain */
+ unsigned char S390enf_mask[4];/* S/390 enforcement mask */
+ unsigned char pad_004[36]; /* reserved */
+};
+
+/**
+ * xcRB
+ */
+struct ica_xcRB {
+ unsigned short agent_ID;
+ unsigned int user_defined;
+ unsigned short request_ID;
+ unsigned int request_control_blk_length;
+ unsigned char padding1[16 - sizeof (char *)];
+ char __user * request_control_blk_addr;
+ unsigned int request_data_length;
+ char padding2[16 - sizeof (char *)];
+ char __user * request_data_address;
+ unsigned int reply_control_blk_length;
+ char padding3[16 - sizeof (char *)];
+ char __user * reply_control_blk_addr;
+ unsigned int reply_data_length;
+ char padding4[16 - sizeof (char *)];
+ char __user * reply_data_addr;
+ unsigned short priority_window;
+ unsigned int status;
+} __attribute__((packed));
+#define AUTOSELECT ((unsigned int)0xFFFFFFFF)
+
+#define ZCRYPT_IOCTL_MAGIC 'z'
+
+/**
+ * Interface notes:
+ *
+ * The ioctl()s which are implemented (along with relevant details)
+ * are:
+ *
+ * ICARSAMODEXPO
+ * Perform an RSA operation using a Modulus-Exponent pair
+ * This takes an ica_rsa_modexpo struct as its arg.
+ *
+ * NOTE: please refer to the comments preceding this structure
+ * for the implementation details for the contents of the
+ * block
+ *
+ * ICARSACRT
+ * Perform an RSA operation using a Chinese-Remainder Theorem key
+ * This takes an ica_rsa_modexpo_crt struct as its arg.
+ *
+ * NOTE: please refer to the comments preceding this structure
+ * for the implementation details for the contents of the
+ * block
+ *
+ * Z90STAT_TOTALCOUNT
+ * Return an integer count of all device types together.
+ *
+ * Z90STAT_PCICACOUNT
+ * Return an integer count of all PCICAs.
+ *
+ * Z90STAT_PCICCCOUNT
+ * Return an integer count of all PCICCs.
+ *
+ * Z90STAT_PCIXCCMCL2COUNT
+ * Return an integer count of all MCL2 PCIXCCs.
+ *
+ * Z90STAT_PCIXCCMCL3COUNT
+ * Return an integer count of all MCL3 PCIXCCs.
+ *
+ * Z90STAT_CEX2CCOUNT
+ * Return an integer count of all CEX2Cs.
+ *
+ * Z90STAT_CEX2ACOUNT
+ * Return an integer count of all CEX2As.
+ *
+ * Z90STAT_REQUESTQ_COUNT
+ * Return an integer count of the number of entries waiting to be
+ * sent to a device.
+ *
+ * Z90STAT_PENDINGQ_COUNT
+ * Return an integer count of the number of entries sent to a
+ * device awaiting the reply.
+ *
+ * Z90STAT_TOTALOPEN_COUNT
+ * Return an integer count of the number of open file handles.
+ *
+ * Z90STAT_DOMAIN_INDEX
+ * Return the integer value of the Cryptographic Domain.
+ *
+ * Z90STAT_STATUS_MASK
+ * Return an 64 element array of unsigned chars for the status of
+ * all devices.
+ * 0x01: PCICA
+ * 0x02: PCICC
+ * 0x03: PCIXCC_MCL2
+ * 0x04: PCIXCC_MCL3
+ * 0x05: CEX2C
+ * 0x06: CEX2A
+ * 0x0d: device is disabled via the proc filesystem
+ *
+ * Z90STAT_QDEPTH_MASK
+ * Return an 64 element array of unsigned chars for the queue
+ * depth of all devices.
+ *
+ * Z90STAT_PERDEV_REQCNT
+ * Return an 64 element array of unsigned integers for the number
+ * of successfully completed requests per device since the device
+ * was detected and made available.
+ *
+ * ICAZ90STATUS (deprecated)
+ * Return some device driver status in a ica_z90_status struct
+ * This takes an ica_z90_status struct as its arg.
+ *
+ * NOTE: this ioctl() is deprecated, and has been replaced with
+ * single ioctl()s for each type of status being requested
+ *
+ * Z90STAT_PCIXCCCOUNT (deprecated)
+ * Return an integer count of all PCIXCCs (MCL2 + MCL3).
+ * This is DEPRECATED now that MCL3 PCIXCCs are treated differently from
+ * MCL2 PCIXCCs.
+ *
+ * Z90QUIESCE (not recommended)
+ * Quiesce the driver. This is intended to stop all new
+ * requests from being processed. Its use is NOT recommended,
+ * except in circumstances where there is no other way to stop
+ * callers from accessing the driver. Its original use was to
+ * allow the driver to be "drained" of work in preparation for
+ * a system shutdown.
+ *
+ * NOTE: once issued, this ban on new work cannot be undone
+ * except by unloading and reloading the driver.
+ */
+
+/**
+ * Supported ioctl calls
+ */
+#define ICARSAMODEXPO _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x05, 0)
+#define ICARSACRT _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x06, 0)
+#define ZSECSENDCPRB _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x81, 0)
+
+/* New status calls */
+#define Z90STAT_TOTALCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x40, int)
+#define Z90STAT_PCICACOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x41, int)
+#define Z90STAT_PCICCCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x42, int)
+#define Z90STAT_PCIXCCMCL2COUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x4b, int)
+#define Z90STAT_PCIXCCMCL3COUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x4c, int)
+#define Z90STAT_CEX2CCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x4d, int)
+#define Z90STAT_CEX2ACOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x4e, int)
+#define Z90STAT_REQUESTQ_COUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x44, int)
+#define Z90STAT_PENDINGQ_COUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x45, int)
+#define Z90STAT_TOTALOPEN_COUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x46, int)
+#define Z90STAT_DOMAIN_INDEX _IOR(ZCRYPT_IOCTL_MAGIC, 0x47, int)
+#define Z90STAT_STATUS_MASK _IOR(ZCRYPT_IOCTL_MAGIC, 0x48, char[64])
+#define Z90STAT_QDEPTH_MASK _IOR(ZCRYPT_IOCTL_MAGIC, 0x49, char[64])
+#define Z90STAT_PERDEV_REQCNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x4a, int[64])
+
+#endif /* __ASM_S390_ZCRYPT_H */
#define CCW_DEVICE_ID_MATCH_DEVICE_TYPE 0x04
#define CCW_DEVICE_ID_MATCH_DEVICE_MODEL 0x08
+/* s390 AP bus devices */
+struct ap_device_id {
+ __u16 match_flags; /* which fields to match against */
+ __u8 dev_type; /* device type */
+ __u8 pad1;
+ __u32 pad2;
+ kernel_ulong_t driver_info;
+};
+
+#define AP_DEVICE_ID_MATCH_DEVICE_TYPE 0x01
+
#define PNP_ID_LEN 8
#define PNP_MAX_DEVICES 8
return 1;
}
+/* looks like: "ap:tN" */
+static int do_ap_entry(const char *filename,
+ struct ap_device_id *id, char *alias)
+{
+ sprintf(alias, "ap:t%02X", id->dev_type);
+ return 1;
+}
+
/* Looks like: "serio:tyNprNidNexN" */
static int do_serio_entry(const char *filename,
struct serio_device_id *id, char *alias)
do_table(symval, sym->st_size,
sizeof(struct ccw_device_id), "ccw",
do_ccw_entry, mod);
+ else if (sym_is(symname, "__mod_ap_device_table"))
+ do_table(symval, sym->st_size,
+ sizeof(struct ap_device_id), "ap",
+ do_ap_entry, mod);
else if (sym_is(symname, "__mod_serio_device_table"))
do_table(symval, sym->st_size,
sizeof(struct serio_device_id), "serio",
projects / deliverable / linux.git / commitdiff
