2 * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
3 * of PCI-SCSI IO processors.
5 * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
6 * Copyright (c) 2003-2005 Matthew Wilcox <matthew@wil.cx>
8 * This driver is derived from the Linux sym53c8xx driver.
9 * Copyright (C) 1998-2000 Gerard Roudier
11 * The sym53c8xx driver is derived from the ncr53c8xx driver that had been
12 * a port of the FreeBSD ncr driver to Linux-1.2.13.
14 * The original ncr driver has been written for 386bsd and FreeBSD by
15 * Wolfgang Stanglmeier <wolf@cologne.de>
16 * Stefan Esser <se@mi.Uni-Koeln.de>
17 * Copyright (C) 1994 Wolfgang Stanglmeier
19 * Other major contributions:
21 * NVRAM detection and reading.
22 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
24 *-----------------------------------------------------------------------------
26 * This program is free software; you can redistribute it and/or modify
27 * it under the terms of the GNU General Public License as published by
28 * the Free Software Foundation; either version 2 of the License, or
29 * (at your option) any later version.
31 * This program is distributed in the hope that it will be useful,
32 * but WITHOUT ANY WARRANTY; without even the implied warranty of
33 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
34 * GNU General Public License for more details.
36 * You should have received a copy of the GNU General Public License
37 * along with this program; if not, write to the Free Software
38 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
40 #include <linux/ctype.h>
41 #include <linux/init.h>
42 #include <linux/interrupt.h>
43 #include <linux/module.h>
44 #include <linux/moduleparam.h>
45 #include <linux/spinlock.h>
46 #include <scsi/scsi.h>
47 #include <scsi/scsi_tcq.h>
48 #include <scsi/scsi_device.h>
49 #include <scsi/scsi_transport.h>
52 #include "sym_nvram.h"
54 #define NAME53C "sym53c"
55 #define NAME53C8XX "sym53c8xx"
57 /* SPARC just has to be different ... */
60 #define IRQ_PRM(x) __irq_itoa(x)
63 #define IRQ_PRM(x) (x)
66 struct sym_driver_setup sym_driver_setup
= SYM_LINUX_DRIVER_SETUP
;
67 unsigned int sym_debug_flags
= 0;
69 static char *excl_string
;
70 static char *safe_string
;
71 module_param_named(cmd_per_lun
, sym_driver_setup
.max_tag
, ushort
, 0);
72 module_param_string(tag_ctrl
, sym_driver_setup
.tag_ctrl
, 100, 0);
73 module_param_named(burst
, sym_driver_setup
.burst_order
, byte
, 0);
74 module_param_named(led
, sym_driver_setup
.scsi_led
, byte
, 0);
75 module_param_named(diff
, sym_driver_setup
.scsi_diff
, byte
, 0);
76 module_param_named(irqm
, sym_driver_setup
.irq_mode
, byte
, 0);
77 module_param_named(buschk
, sym_driver_setup
.scsi_bus_check
, byte
, 0);
78 module_param_named(hostid
, sym_driver_setup
.host_id
, byte
, 0);
79 module_param_named(verb
, sym_driver_setup
.verbose
, byte
, 0);
80 module_param_named(debug
, sym_debug_flags
, uint
, 0);
81 module_param_named(settle
, sym_driver_setup
.settle_delay
, byte
, 0);
82 module_param_named(nvram
, sym_driver_setup
.use_nvram
, byte
, 0);
83 module_param_named(excl
, excl_string
, charp
, 0);
84 module_param_named(safe
, safe_string
, charp
, 0);
86 MODULE_PARM_DESC(cmd_per_lun
, "The maximum number of tags to use by default");
87 MODULE_PARM_DESC(tag_ctrl
, "More detailed control over tags per LUN");
88 MODULE_PARM_DESC(burst
, "Maximum burst. 0 to disable, 255 to read from registers");
89 MODULE_PARM_DESC(led
, "Set to 1 to enable LED support");
90 MODULE_PARM_DESC(diff
, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3");
91 MODULE_PARM_DESC(irqm
, "0 for open drain, 1 to leave alone, 2 for totem pole");
92 MODULE_PARM_DESC(buschk
, "0 to not check, 1 for detach on error, 2 for warn on error");
93 MODULE_PARM_DESC(hostid
, "The SCSI ID to use for the host adapters");
94 MODULE_PARM_DESC(verb
, "0 for minimal verbosity, 1 for normal, 2 for excessive");
95 MODULE_PARM_DESC(debug
, "Set bits to enable debugging");
96 MODULE_PARM_DESC(settle
, "Settle delay in seconds. Default 3");
97 MODULE_PARM_DESC(nvram
, "Option currently not used");
98 MODULE_PARM_DESC(excl
, "List ioport addresses here to prevent controllers from being attached");
99 MODULE_PARM_DESC(safe
, "Set other settings to a \"safe mode\"");
101 MODULE_LICENSE("GPL");
102 MODULE_VERSION(SYM_VERSION
);
103 MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>");
104 MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters");
106 static void sym2_setup_params(void)
108 char *p
= excl_string
;
111 while (p
&& (xi
< 8)) {
113 int val
= (int) simple_strtoul(p
, &next_p
, 0);
114 sym_driver_setup
.excludes
[xi
++] = val
;
119 if (*safe_string
== 'y') {
120 sym_driver_setup
.max_tag
= 0;
121 sym_driver_setup
.burst_order
= 0;
122 sym_driver_setup
.scsi_led
= 0;
123 sym_driver_setup
.scsi_diff
= 1;
124 sym_driver_setup
.irq_mode
= 0;
125 sym_driver_setup
.scsi_bus_check
= 2;
126 sym_driver_setup
.host_id
= 7;
127 sym_driver_setup
.verbose
= 2;
128 sym_driver_setup
.settle_delay
= 10;
129 sym_driver_setup
.use_nvram
= 1;
130 } else if (*safe_string
!= 'n') {
131 printk(KERN_WARNING NAME53C8XX
"Ignoring parameter %s"
132 " passed to safe option", safe_string
);
138 * We used to try to deal with 64-bit BARs here, but don't any more.
139 * There are many parts of this driver which would need to be modified
140 * to handle a 64-bit base address, including scripts. I'm uncomfortable
141 * with making those changes when I have no way of testing it, so I'm
142 * just going to disable it.
144 * Note that some machines (eg HP rx8620 and Superdome) have bus addresses
145 * below 4GB and physical addresses above 4GB. These will continue to work.
148 pci_get_base_address(struct pci_dev
*pdev
, int index
, unsigned long *basep
)
152 #define PCI_BAR_OFFSET(index) (PCI_BASE_ADDRESS_0 + (index<<2))
154 pci_read_config_dword(pdev
, PCI_BAR_OFFSET(index
++), &tmp
);
156 if ((tmp
& 0x7) == PCI_BASE_ADDRESS_MEM_TYPE_64
) {
157 pci_read_config_dword(pdev
, PCI_BAR_OFFSET(index
++), &tmp
);
160 "BAR %d is 64-bit, disabling\n", index
- 1);
165 if ((base
& PCI_BASE_ADDRESS_SPACE
) == PCI_BASE_ADDRESS_SPACE_IO
) {
166 base
&= PCI_BASE_ADDRESS_IO_MASK
;
168 base
&= PCI_BASE_ADDRESS_MEM_MASK
;
173 #undef PCI_BAR_OFFSET
176 static struct scsi_transport_template
*sym2_transport_template
= NULL
;
179 * Used by the eh thread to wait for command completion.
180 * It is allocated on the eh thread stack.
183 struct completion done
;
184 struct timer_list timer
;
185 void (*old_done
)(struct scsi_cmnd
*);
191 * Driver private area in the SCSI command structure.
193 struct sym_ucmd
{ /* Override the SCSI pointer structure */
194 dma_addr_t data_mapping
;
196 struct sym_eh_wait
*eh_wait
;
199 #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
200 #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
202 static void __unmap_scsi_data(struct pci_dev
*pdev
, struct scsi_cmnd
*cmd
)
204 int dma_dir
= cmd
->sc_data_direction
;
206 switch(SYM_UCMD_PTR(cmd
)->data_mapped
) {
208 pci_unmap_sg(pdev
, cmd
->buffer
, cmd
->use_sg
, dma_dir
);
211 pci_unmap_single(pdev
, SYM_UCMD_PTR(cmd
)->data_mapping
,
212 cmd
->request_bufflen
, dma_dir
);
215 SYM_UCMD_PTR(cmd
)->data_mapped
= 0;
218 static dma_addr_t
__map_scsi_single_data(struct pci_dev
*pdev
, struct scsi_cmnd
*cmd
)
221 int dma_dir
= cmd
->sc_data_direction
;
223 mapping
= pci_map_single(pdev
, cmd
->request_buffer
,
224 cmd
->request_bufflen
, dma_dir
);
226 SYM_UCMD_PTR(cmd
)->data_mapped
= 1;
227 SYM_UCMD_PTR(cmd
)->data_mapping
= mapping
;
233 static int __map_scsi_sg_data(struct pci_dev
*pdev
, struct scsi_cmnd
*cmd
)
236 int dma_dir
= cmd
->sc_data_direction
;
238 use_sg
= pci_map_sg(pdev
, cmd
->buffer
, cmd
->use_sg
, dma_dir
);
240 SYM_UCMD_PTR(cmd
)->data_mapped
= 2;
241 SYM_UCMD_PTR(cmd
)->data_mapping
= use_sg
;
247 #define unmap_scsi_data(np, cmd) \
248 __unmap_scsi_data(np->s.device, cmd)
249 #define map_scsi_single_data(np, cmd) \
250 __map_scsi_single_data(np->s.device, cmd)
251 #define map_scsi_sg_data(np, cmd) \
252 __map_scsi_sg_data(np->s.device, cmd)
254 * Complete a pending CAM CCB.
256 void sym_xpt_done(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
)
258 unmap_scsi_data(np
, cmd
);
262 static void sym_xpt_done2(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
, int cam_status
)
264 sym_set_cam_status(cmd
, cam_status
);
265 sym_xpt_done(np
, cmd
);
270 * Tell the SCSI layer about a BUS RESET.
272 void sym_xpt_async_bus_reset(struct sym_hcb
*np
)
274 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np
));
275 np
->s
.settle_time
= jiffies
+ sym_driver_setup
.settle_delay
* HZ
;
276 np
->s
.settle_time_valid
= 1;
277 if (sym_verbose
>= 2)
278 printf_info("%s: command processing suspended for %d seconds\n",
279 sym_name(np
), sym_driver_setup
.settle_delay
);
283 * Tell the SCSI layer about a BUS DEVICE RESET message sent.
285 void sym_xpt_async_sent_bdr(struct sym_hcb
*np
, int target
)
287 printf_notice("%s: TARGET %d has been reset.\n", sym_name(np
), target
);
291 * Choose the more appropriate CAM status if
292 * the IO encountered an extended error.
294 static int sym_xerr_cam_status(int cam_status
, int x_status
)
297 if (x_status
& XE_PARITY_ERR
)
298 cam_status
= DID_PARITY
;
299 else if (x_status
&(XE_EXTRA_DATA
|XE_SODL_UNRUN
|XE_SWIDE_OVRUN
))
300 cam_status
= DID_ERROR
;
301 else if (x_status
& XE_BAD_PHASE
)
302 cam_status
= DID_ERROR
;
304 cam_status
= DID_ERROR
;
310 * Build CAM result for a failed or auto-sensed IO.
312 void sym_set_cam_result_error(struct sym_hcb
*np
, struct sym_ccb
*cp
, int resid
)
314 struct scsi_cmnd
*cmd
= cp
->cmd
;
315 u_int cam_status
, scsi_status
, drv_status
;
319 scsi_status
= cp
->ssss_status
;
321 if (cp
->host_flags
& HF_SENSE
) {
322 scsi_status
= cp
->sv_scsi_status
;
323 resid
= cp
->sv_resid
;
324 if (sym_verbose
&& cp
->sv_xerr_status
)
325 sym_print_xerr(cmd
, cp
->sv_xerr_status
);
326 if (cp
->host_status
== HS_COMPLETE
&&
327 cp
->ssss_status
== S_GOOD
&&
328 cp
->xerr_status
== 0) {
329 cam_status
= sym_xerr_cam_status(DID_OK
,
331 drv_status
= DRIVER_SENSE
;
333 * Bounce back the sense data to user.
335 memset(&cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
336 memcpy(cmd
->sense_buffer
, cp
->sns_bbuf
,
337 min(sizeof(cmd
->sense_buffer
),
338 (size_t)SYM_SNS_BBUF_LEN
));
341 * If the device reports a UNIT ATTENTION condition
342 * due to a RESET condition, we should consider all
343 * disconnect CCBs for this unit as aborted.
347 p
= (u_char
*) cmd
->sense_data
;
348 if (p
[0]==0x70 && p
[2]==0x6 && p
[12]==0x29)
349 sym_clear_tasks(np
, DID_ABORT
,
350 cp
->target
,cp
->lun
, -1);
355 * Error return from our internal request sense. This
356 * is bad: we must clear the contingent allegiance
357 * condition otherwise the device will always return
358 * BUSY. Use a big stick.
360 sym_reset_scsi_target(np
, cmd
->device
->id
);
361 cam_status
= DID_ERROR
;
363 } else if (cp
->host_status
== HS_COMPLETE
) /* Bad SCSI status */
365 else if (cp
->host_status
== HS_SEL_TIMEOUT
) /* Selection timeout */
366 cam_status
= DID_NO_CONNECT
;
367 else if (cp
->host_status
== HS_UNEXPECTED
) /* Unexpected BUS FREE*/
368 cam_status
= DID_ERROR
;
369 else { /* Extended error */
371 sym_print_addr(cmd
, "COMMAND FAILED (%x %x %x).\n",
372 cp
->host_status
, cp
->ssss_status
,
376 * Set the most appropriate value for CAM status.
378 cam_status
= sym_xerr_cam_status(DID_ERROR
, cp
->xerr_status
);
381 cmd
->result
= (drv_status
<< 24) + (cam_status
<< 16) + scsi_status
;
386 * Build the scatter/gather array for an I/O.
389 static int sym_scatter_no_sglist(struct sym_hcb
*np
, struct sym_ccb
*cp
, struct scsi_cmnd
*cmd
)
391 struct sym_tblmove
*data
= &cp
->phys
.data
[SYM_CONF_MAX_SG
-1];
393 unsigned int len
= cmd
->request_bufflen
;
396 dma_addr_t baddr
= map_scsi_single_data(np
, cmd
);
399 struct sym_tcb
*tp
= &np
->target
[cp
->target
];
400 if (tp
->head
.wval
& EWS
) {
402 cp
->odd_byte_adjustment
++;
406 sym_build_sge(np
, data
, baddr
, len
);
418 static int sym_scatter(struct sym_hcb
*np
, struct sym_ccb
*cp
, struct scsi_cmnd
*cmd
)
421 int use_sg
= (int) cmd
->use_sg
;
426 segment
= sym_scatter_no_sglist(np
, cp
, cmd
);
427 else if ((use_sg
= map_scsi_sg_data(np
, cmd
)) > 0) {
428 struct scatterlist
*scatter
= (struct scatterlist
*)cmd
->buffer
;
429 struct sym_tcb
*tp
= &np
->target
[cp
->target
];
430 struct sym_tblmove
*data
;
432 if (use_sg
> SYM_CONF_MAX_SG
) {
433 unmap_scsi_data(np
, cmd
);
437 data
= &cp
->phys
.data
[SYM_CONF_MAX_SG
- use_sg
];
439 for (segment
= 0; segment
< use_sg
; segment
++) {
440 dma_addr_t baddr
= sg_dma_address(&scatter
[segment
]);
441 unsigned int len
= sg_dma_len(&scatter
[segment
]);
443 if ((len
& 1) && (tp
->head
.wval
& EWS
)) {
445 cp
->odd_byte_adjustment
++;
448 sym_build_sge(np
, &data
[segment
], baddr
, len
);
459 * Queue a SCSI command.
461 static int sym_queue_command(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
)
463 struct scsi_device
*sdev
= cmd
->device
;
470 * Minimal checkings, so that we will not
471 * go outside our tables.
473 if (sdev
->id
== np
->myaddr
) {
474 sym_xpt_done2(np
, cmd
, DID_NO_CONNECT
);
479 * Retrieve the target descriptor.
481 tp
= &np
->target
[sdev
->id
];
484 * Select tagged/untagged.
486 lp
= sym_lp(tp
, sdev
->lun
);
487 order
= (lp
&& lp
->s
.reqtags
) ? M_SIMPLE_TAG
: 0;
492 cp
= sym_get_ccb(np
, cmd
, order
);
494 return 1; /* Means resource shortage */
495 sym_queue_scsiio(np
, cmd
, cp
);
500 * Setup buffers and pointers that address the CDB.
502 static inline int sym_setup_cdb(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
, struct sym_ccb
*cp
)
504 memcpy(cp
->cdb_buf
, cmd
->cmnd
, cmd
->cmd_len
);
506 cp
->phys
.cmd
.addr
= CCB_BA(cp
, cdb_buf
[0]);
507 cp
->phys
.cmd
.size
= cpu_to_scr(cmd
->cmd_len
);
513 * Setup pointers that address the data and start the I/O.
515 int sym_setup_data_and_start(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
, struct sym_ccb
*cp
)
518 struct sym_tcb
*tp
= &np
->target
[cp
->target
];
519 struct sym_lcb
*lp
= sym_lp(tp
, cp
->lun
);
524 if (sym_setup_cdb(np
, cmd
, cp
))
528 * No direction means no data.
530 dir
= cmd
->sc_data_direction
;
531 if (dir
!= DMA_NONE
) {
532 cp
->segments
= sym_scatter(np
, cp
, cmd
);
533 if (cp
->segments
< 0) {
534 sym_set_cam_status(cmd
, DID_ERROR
);
545 sym_setup_data_pointers(np
, cp
, dir
);
548 * When `#ifed 1', the code below makes the driver
549 * panic on the first attempt to write to a SCSI device.
550 * It is the first test we want to do after a driver
551 * change that does not seem obviously safe. :)
554 switch (cp
->cdb_buf
[0]) {
555 case 0x0A: case 0x2A: case 0xAA:
556 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n");
567 sym_start_next_ccbs(np
, lp
, 2);
569 sym_put_start_queue(np
, cp
);
573 sym_free_ccb(np
, cp
);
574 sym_xpt_done(np
, cmd
);
582 * Misused to keep the driver running when
583 * interrupts are not configured correctly.
585 static void sym_timer(struct sym_hcb
*np
)
587 unsigned long thistime
= jiffies
;
592 np
->s
.timer
.expires
= thistime
+ SYM_CONF_TIMER_INTERVAL
;
593 add_timer(&np
->s
.timer
);
596 * If we are resetting the ncr, wait for settle_time before
597 * clearing it. Then command processing will be resumed.
599 if (np
->s
.settle_time_valid
) {
600 if (time_before_eq(np
->s
.settle_time
, thistime
)) {
601 if (sym_verbose
>= 2 )
602 printk("%s: command processing resumed\n",
604 np
->s
.settle_time_valid
= 0;
610 * Nothing to do for now, but that may come.
612 if (np
->s
.lasttime
+ 4*HZ
< thistime
) {
613 np
->s
.lasttime
= thistime
;
616 #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS
618 * Some way-broken PCI bridges may lead to
619 * completions being lost when the clearing
620 * of the INTFLY flag by the CPU occurs
621 * concurrently with the chip raising this flag.
622 * If this ever happen, lost completions will
631 * PCI BUS error handler.
633 void sym_log_bus_error(struct sym_hcb
*np
)
636 pci_read_config_word(np
->s
.device
, PCI_STATUS
, &pci_sts
);
637 if (pci_sts
& 0xf900) {
638 pci_write_config_word(np
->s
.device
, PCI_STATUS
, pci_sts
);
639 printf("%s: PCI STATUS = 0x%04x\n",
640 sym_name(np
), pci_sts
& 0xf900);
645 * queuecommand method. Entered with the host adapter lock held and
646 * interrupts disabled.
648 static int sym53c8xx_queue_command(struct scsi_cmnd
*cmd
,
649 void (*done
)(struct scsi_cmnd
*))
651 struct sym_hcb
*np
= SYM_SOFTC_PTR(cmd
);
652 struct sym_ucmd
*ucp
= SYM_UCMD_PTR(cmd
);
655 cmd
->scsi_done
= done
;
656 memset(ucp
, 0, sizeof(*ucp
));
659 * Shorten our settle_time if needed for
660 * this command not to time out.
662 if (np
->s
.settle_time_valid
&& cmd
->timeout_per_command
) {
663 unsigned long tlimit
= jiffies
+ cmd
->timeout_per_command
;
664 tlimit
-= SYM_CONF_TIMER_INTERVAL
*2;
665 if (time_after(np
->s
.settle_time
, tlimit
)) {
666 np
->s
.settle_time
= tlimit
;
670 if (np
->s
.settle_time_valid
)
671 return SCSI_MLQUEUE_HOST_BUSY
;
673 sts
= sym_queue_command(np
, cmd
);
675 return SCSI_MLQUEUE_HOST_BUSY
;
680 * Linux entry point of the interrupt handler.
682 static irqreturn_t
sym53c8xx_intr(int irq
, void *dev_id
, struct pt_regs
* regs
)
685 struct sym_hcb
*np
= (struct sym_hcb
*)dev_id
;
687 if (DEBUG_FLAGS
& DEBUG_TINY
) printf_debug ("[");
689 spin_lock_irqsave(np
->s
.host
->host_lock
, flags
);
691 spin_unlock_irqrestore(np
->s
.host
->host_lock
, flags
);
693 if (DEBUG_FLAGS
& DEBUG_TINY
) printf_debug ("]\n");
699 * Linux entry point of the timer handler
701 static void sym53c8xx_timer(unsigned long npref
)
703 struct sym_hcb
*np
= (struct sym_hcb
*)npref
;
706 spin_lock_irqsave(np
->s
.host
->host_lock
, flags
);
708 spin_unlock_irqrestore(np
->s
.host
->host_lock
, flags
);
713 * What the eh thread wants us to perform.
715 #define SYM_EH_ABORT 0
716 #define SYM_EH_DEVICE_RESET 1
717 #define SYM_EH_BUS_RESET 2
718 #define SYM_EH_HOST_RESET 3
721 * What we will do regarding the involved SCSI command.
723 #define SYM_EH_DO_IGNORE 0
724 #define SYM_EH_DO_COMPLETE 1
725 #define SYM_EH_DO_WAIT 2
728 * Our general completion handler.
730 static void __sym_eh_done(struct scsi_cmnd
*cmd
, int timed_out
)
732 struct sym_eh_wait
*ep
= SYM_UCMD_PTR(cmd
)->eh_wait
;
736 /* Try to avoid a race here (not 100% safe) */
739 if (ep
->to_do
== SYM_EH_DO_WAIT
&& !del_timer(&ep
->timer
))
743 /* Revert everything */
744 SYM_UCMD_PTR(cmd
)->eh_wait
= NULL
;
745 cmd
->scsi_done
= ep
->old_done
;
747 /* Wake up the eh thread if it wants to sleep */
748 if (ep
->to_do
== SYM_EH_DO_WAIT
)
753 * scsi_done() alias when error recovery is in progress.
755 static void sym_eh_done(struct scsi_cmnd
*cmd
) { __sym_eh_done(cmd
, 0); }
758 * Some timeout handler to avoid waiting too long.
760 static void sym_eh_timeout(u_long p
) { __sym_eh_done((struct scsi_cmnd
*)p
, 1); }
763 * Generic method for our eh processing.
764 * The 'op' argument tells what we have to do.
766 static int sym_eh_handler(int op
, char *opname
, struct scsi_cmnd
*cmd
)
768 struct sym_hcb
*np
= SYM_SOFTC_PTR(cmd
);
770 int to_do
= SYM_EH_DO_IGNORE
;
772 struct sym_eh_wait eh
, *ep
= &eh
;
774 dev_warn(&cmd
->device
->sdev_gendev
, "%s operation started.\n", opname
);
776 /* This one is queued in some place -> to wait for completion */
777 FOR_EACH_QUEUED_ELEMENT(&np
->busy_ccbq
, qp
) {
778 struct sym_ccb
*cp
= sym_que_entry(qp
, struct sym_ccb
, link_ccbq
);
779 if (cp
->cmd
== cmd
) {
780 to_do
= SYM_EH_DO_WAIT
;
786 /* Prepare stuff to either ignore, complete or wait for completion */
789 case SYM_EH_DO_IGNORE
:
792 init_completion(&ep
->done
);
794 case SYM_EH_DO_COMPLETE
:
795 ep
->old_done
= cmd
->scsi_done
;
796 cmd
->scsi_done
= sym_eh_done
;
797 SYM_UCMD_PTR(cmd
)->eh_wait
= ep
;
800 /* Try to proceed the operation we have been asked for */
804 sts
= sym_abort_scsiio(np
, cmd
, 1);
806 case SYM_EH_DEVICE_RESET
:
807 sts
= sym_reset_scsi_target(np
, cmd
->device
->id
);
809 case SYM_EH_BUS_RESET
:
810 sym_reset_scsi_bus(np
, 1);
813 case SYM_EH_HOST_RESET
:
814 sym_reset_scsi_bus(np
, 0);
815 sym_start_up (np
, 1);
822 /* On error, restore everything and cross fingers :) */
824 SYM_UCMD_PTR(cmd
)->eh_wait
= NULL
;
825 cmd
->scsi_done
= ep
->old_done
;
826 to_do
= SYM_EH_DO_IGNORE
;
830 /* Complete the command with locks held as required by the driver */
831 if (to_do
== SYM_EH_DO_COMPLETE
)
832 sym_xpt_done2(np
, cmd
, DID_ABORT
);
834 /* Wait for completion with locks released, as required by kernel */
835 if (to_do
== SYM_EH_DO_WAIT
) {
836 init_timer(&ep
->timer
);
837 ep
->timer
.expires
= jiffies
+ (5*HZ
);
838 ep
->timer
.function
= sym_eh_timeout
;
839 ep
->timer
.data
= (u_long
)cmd
;
840 ep
->timed_out
= 1; /* Be pessimistic for once :) */
841 add_timer(&ep
->timer
);
842 spin_unlock_irq(np
->s
.host
->host_lock
);
843 wait_for_completion(&ep
->done
);
844 spin_lock_irq(np
->s
.host
->host_lock
);
848 dev_warn(&cmd
->device
->sdev_gendev
, "%s operation %s.\n", opname
,
849 sts
==0 ? "complete" :sts
==-2 ? "timed-out" : "failed");
850 return sts
? SCSI_FAILED
: SCSI_SUCCESS
;
855 * Error handlers called from the eh thread (one thread per HBA).
857 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd
*cmd
)
861 spin_lock_irq(cmd
->device
->host
->host_lock
);
862 rc
= sym_eh_handler(SYM_EH_ABORT
, "ABORT", cmd
);
863 spin_unlock_irq(cmd
->device
->host
->host_lock
);
868 static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd
*cmd
)
872 spin_lock_irq(cmd
->device
->host
->host_lock
);
873 rc
= sym_eh_handler(SYM_EH_DEVICE_RESET
, "DEVICE RESET", cmd
);
874 spin_unlock_irq(cmd
->device
->host
->host_lock
);
879 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd
*cmd
)
881 return sym_eh_handler(SYM_EH_BUS_RESET
, "BUS RESET", cmd
);
884 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd
*cmd
)
886 return sym_eh_handler(SYM_EH_HOST_RESET
, "HOST RESET", cmd
);
890 * Tune device queuing depth, according to various limits.
892 static void sym_tune_dev_queuing(struct sym_tcb
*tp
, int lun
, u_short reqtags
)
894 struct sym_lcb
*lp
= sym_lp(tp
, lun
);
900 oldtags
= lp
->s
.reqtags
;
902 if (reqtags
> lp
->s
.scdev_depth
)
903 reqtags
= lp
->s
.scdev_depth
;
905 lp
->started_limit
= reqtags
? reqtags
: 2;
907 lp
->s
.reqtags
= reqtags
;
909 if (reqtags
!= oldtags
) {
910 dev_info(&tp
->starget
->dev
,
911 "tagged command queuing %s, command queue depth %d.\n",
912 lp
->s
.reqtags
? "enabled" : "disabled",
918 * Linux select queue depths function
920 #define DEF_DEPTH (sym_driver_setup.max_tag)
921 #define ALL_TARGETS -2
926 static int device_queue_depth(struct sym_hcb
*np
, int target
, int lun
)
929 char *p
= sym_driver_setup
.tag_ctrl
;
935 while ((c
= *p
++) != 0) {
936 v
= simple_strtoul(p
, &ep
, 0);
945 t
= (target
== v
) ? v
: NO_TARGET
;
950 u
= (lun
== v
) ? v
: NO_LUN
;
953 if (h
== np
->s
.unit
&&
954 (t
== ALL_TARGETS
|| t
== target
) &&
955 (u
== ALL_LUNS
|| u
== lun
))
970 static int sym53c8xx_slave_alloc(struct scsi_device
*sdev
)
975 if (sdev
->id
>= SYM_CONF_MAX_TARGET
|| sdev
->lun
>= SYM_CONF_MAX_LUN
)
978 np
= sym_get_hcb(sdev
->host
);
979 tp
= &np
->target
[sdev
->id
];
982 * Fail the device init if the device is flagged NOSCAN at BOOT in
983 * the NVRAM. This may speed up boot and maintain coherency with
984 * BIOS device numbering. Clearing the flag allows the user to
985 * rescan skipped devices later. We also return an error for
986 * devices not flagged for SCAN LUNS in the NVRAM since some single
987 * lun devices behave badly when asked for a non zero LUN.
990 if ((tp
->usrflags
& SYM_SCAN_BOOT_DISABLED
) ||
991 ((tp
->usrflags
& SYM_SCAN_LUNS_DISABLED
) && sdev
->lun
!= 0)) {
992 tp
->usrflags
&= ~SYM_SCAN_BOOT_DISABLED
;
996 tp
->starget
= sdev
->sdev_target
;
1001 * Linux entry point for device queue sizing.
1003 static int sym53c8xx_slave_configure(struct scsi_device
*device
)
1005 struct sym_hcb
*np
= sym_get_hcb(device
->host
);
1006 struct sym_tcb
*tp
= &np
->target
[device
->id
];
1008 int reqtags
, depth_to_use
;
1011 * Allocate the LCB if not yet.
1012 * If it fail, we may well be in the sh*t. :)
1014 lp
= sym_alloc_lcb(np
, device
->id
, device
->lun
);
1021 lp
->curr_flags
= lp
->user_flags
;
1024 * Select queue depth from driver setup.
1025 * Donnot use more than configured by user.
1027 * Donnot use more than our maximum.
1029 reqtags
= device_queue_depth(np
, device
->id
, device
->lun
);
1030 if (reqtags
> tp
->usrtags
)
1031 reqtags
= tp
->usrtags
;
1032 if (!device
->tagged_supported
)
1034 #if 1 /* Avoid to locally queue commands for no good reasons */
1035 if (reqtags
> SYM_CONF_MAX_TAG
)
1036 reqtags
= SYM_CONF_MAX_TAG
;
1037 depth_to_use
= (reqtags
? reqtags
: 2);
1039 depth_to_use
= (reqtags
? SYM_CONF_MAX_TAG
: 2);
1041 scsi_adjust_queue_depth(device
,
1042 (device
->tagged_supported
?
1043 MSG_SIMPLE_TAG
: 0),
1045 lp
->s
.scdev_depth
= depth_to_use
;
1046 sym_tune_dev_queuing(tp
, device
->lun
, reqtags
);
1048 if (!spi_initial_dv(device
->sdev_target
))
1049 spi_dv_device(device
);
1055 * Linux entry point for info() function
1057 static const char *sym53c8xx_info (struct Scsi_Host
*host
)
1059 return SYM_DRIVER_NAME
;
1063 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
1065 * Proc file system stuff
1067 * A read operation returns adapter information.
1068 * A write operation is a control command.
1069 * The string is parsed in the driver code and the command is passed
1070 * to the sym_usercmd() function.
1073 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
1082 #define UC_SETSYNC 10
1083 #define UC_SETTAGS 11
1084 #define UC_SETDEBUG 12
1085 #define UC_SETWIDE 14
1086 #define UC_SETFLAG 15
1087 #define UC_SETVERBOSE 17
1088 #define UC_RESETDEV 18
1089 #define UC_CLEARDEV 19
1091 static void sym_exec_user_command (struct sym_hcb
*np
, struct sym_usrcmd
*uc
)
1099 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1101 sym_debug_flags
= uc
->data
;
1105 np
->verbose
= uc
->data
;
1109 * We assume that other commands apply to targets.
1110 * This should always be the case and avoid the below
1111 * 4 lines to be repeated 6 times.
1113 for (t
= 0; t
< SYM_CONF_MAX_TARGET
; t
++) {
1114 if (!((uc
->target
>> t
) & 1))
1116 tp
= &np
->target
[t
];
1121 if (!uc
->data
|| uc
->data
>= 255) {
1122 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
1124 tp
->tgoal
.offset
= 0;
1125 } else if (uc
->data
<= 9 && np
->minsync_dt
) {
1126 if (uc
->data
< np
->minsync_dt
)
1127 uc
->data
= np
->minsync_dt
;
1128 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
1130 tp
->tgoal
.width
= 1;
1131 tp
->tgoal
.period
= uc
->data
;
1132 tp
->tgoal
.offset
= np
->maxoffs_dt
;
1134 if (uc
->data
< np
->minsync
)
1135 uc
->data
= np
->minsync
;
1136 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
1138 tp
->tgoal
.period
= uc
->data
;
1139 tp
->tgoal
.offset
= np
->maxoffs
;
1141 tp
->tgoal
.check_nego
= 1;
1144 tp
->tgoal
.width
= uc
->data
? 1 : 0;
1145 tp
->tgoal
.check_nego
= 1;
1148 for (l
= 0; l
< SYM_CONF_MAX_LUN
; l
++)
1149 sym_tune_dev_queuing(tp
, l
, uc
->data
);
1153 np
->istat_sem
= SEM
;
1154 OUTB(np
, nc_istat
, SIGP
|SEM
);
1157 for (l
= 0; l
< SYM_CONF_MAX_LUN
; l
++) {
1158 struct sym_lcb
*lp
= sym_lp(tp
, l
);
1159 if (lp
) lp
->to_clear
= 1;
1161 np
->istat_sem
= SEM
;
1162 OUTB(np
, nc_istat
, SIGP
|SEM
);
1165 tp
->usrflags
= uc
->data
;
1173 static int skip_spaces(char *ptr
, int len
)
1177 for (cnt
= len
; cnt
> 0 && (c
= *ptr
++) && isspace(c
); cnt
--);
1182 static int get_int_arg(char *ptr
, int len
, u_long
*pv
)
1186 *pv
= simple_strtoul(ptr
, &end
, 10);
1190 static int is_keyword(char *ptr
, int len
, char *verb
)
1192 int verb_len
= strlen(verb
);
1194 if (len
>= verb_len
&& !memcmp(verb
, ptr
, verb_len
))
1200 #define SKIP_SPACES(ptr, len) \
1201 if ((arg_len = skip_spaces(ptr, len)) < 1) \
1203 ptr += arg_len; len -= arg_len;
1205 #define GET_INT_ARG(ptr, len, v) \
1206 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \
1208 ptr += arg_len; len -= arg_len;
1212 * Parse a control command
1215 static int sym_user_command(struct sym_hcb
*np
, char *buffer
, int length
)
1219 struct sym_usrcmd cmd
, *uc
= &cmd
;
1223 memset(uc
, 0, sizeof(*uc
));
1225 if (len
> 0 && ptr
[len
-1] == '\n')
1228 if ((arg_len
= is_keyword(ptr
, len
, "setsync")) != 0)
1229 uc
->cmd
= UC_SETSYNC
;
1230 else if ((arg_len
= is_keyword(ptr
, len
, "settags")) != 0)
1231 uc
->cmd
= UC_SETTAGS
;
1232 else if ((arg_len
= is_keyword(ptr
, len
, "setverbose")) != 0)
1233 uc
->cmd
= UC_SETVERBOSE
;
1234 else if ((arg_len
= is_keyword(ptr
, len
, "setwide")) != 0)
1235 uc
->cmd
= UC_SETWIDE
;
1236 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1237 else if ((arg_len
= is_keyword(ptr
, len
, "setdebug")) != 0)
1238 uc
->cmd
= UC_SETDEBUG
;
1240 else if ((arg_len
= is_keyword(ptr
, len
, "setflag")) != 0)
1241 uc
->cmd
= UC_SETFLAG
;
1242 else if ((arg_len
= is_keyword(ptr
, len
, "resetdev")) != 0)
1243 uc
->cmd
= UC_RESETDEV
;
1244 else if ((arg_len
= is_keyword(ptr
, len
, "cleardev")) != 0)
1245 uc
->cmd
= UC_CLEARDEV
;
1249 #ifdef DEBUG_PROC_INFO
1250 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len
, uc
->cmd
);
1255 ptr
+= arg_len
; len
-= arg_len
;
1264 SKIP_SPACES(ptr
, len
);
1265 if ((arg_len
= is_keyword(ptr
, len
, "all")) != 0) {
1266 ptr
+= arg_len
; len
-= arg_len
;
1269 GET_INT_ARG(ptr
, len
, target
);
1270 uc
->target
= (1<<target
);
1271 #ifdef DEBUG_PROC_INFO
1272 printk("sym_user_command: target=%ld\n", target
);
1283 SKIP_SPACES(ptr
, len
);
1284 GET_INT_ARG(ptr
, len
, uc
->data
);
1285 #ifdef DEBUG_PROC_INFO
1286 printk("sym_user_command: data=%ld\n", uc
->data
);
1289 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1292 SKIP_SPACES(ptr
, len
);
1293 if ((arg_len
= is_keyword(ptr
, len
, "alloc")))
1294 uc
->data
|= DEBUG_ALLOC
;
1295 else if ((arg_len
= is_keyword(ptr
, len
, "phase")))
1296 uc
->data
|= DEBUG_PHASE
;
1297 else if ((arg_len
= is_keyword(ptr
, len
, "queue")))
1298 uc
->data
|= DEBUG_QUEUE
;
1299 else if ((arg_len
= is_keyword(ptr
, len
, "result")))
1300 uc
->data
|= DEBUG_RESULT
;
1301 else if ((arg_len
= is_keyword(ptr
, len
, "scatter")))
1302 uc
->data
|= DEBUG_SCATTER
;
1303 else if ((arg_len
= is_keyword(ptr
, len
, "script")))
1304 uc
->data
|= DEBUG_SCRIPT
;
1305 else if ((arg_len
= is_keyword(ptr
, len
, "tiny")))
1306 uc
->data
|= DEBUG_TINY
;
1307 else if ((arg_len
= is_keyword(ptr
, len
, "timing")))
1308 uc
->data
|= DEBUG_TIMING
;
1309 else if ((arg_len
= is_keyword(ptr
, len
, "nego")))
1310 uc
->data
|= DEBUG_NEGO
;
1311 else if ((arg_len
= is_keyword(ptr
, len
, "tags")))
1312 uc
->data
|= DEBUG_TAGS
;
1313 else if ((arg_len
= is_keyword(ptr
, len
, "pointer")))
1314 uc
->data
|= DEBUG_POINTER
;
1317 ptr
+= arg_len
; len
-= arg_len
;
1319 #ifdef DEBUG_PROC_INFO
1320 printk("sym_user_command: data=%ld\n", uc
->data
);
1323 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
1326 SKIP_SPACES(ptr
, len
);
1327 if ((arg_len
= is_keyword(ptr
, len
, "no_disc")))
1328 uc
->data
&= ~SYM_DISC_ENABLED
;
1331 ptr
+= arg_len
; len
-= arg_len
;
1341 unsigned long flags
;
1343 spin_lock_irqsave(np
->s
.host
->host_lock
, flags
);
1344 sym_exec_user_command (np
, uc
);
1345 spin_unlock_irqrestore(np
->s
.host
->host_lock
, flags
);
1350 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */
1353 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1355 * Informations through the proc file system.
1364 static void copy_mem_info(struct info_str
*info
, char *data
, int len
)
1366 if (info
->pos
+ len
> info
->length
)
1367 len
= info
->length
- info
->pos
;
1369 if (info
->pos
+ len
< info
->offset
) {
1373 if (info
->pos
< info
->offset
) {
1374 data
+= (info
->offset
- info
->pos
);
1375 len
-= (info
->offset
- info
->pos
);
1379 memcpy(info
->buffer
+ info
->pos
, data
, len
);
1384 static int copy_info(struct info_str
*info
, char *fmt
, ...)
1390 va_start(args
, fmt
);
1391 len
= vsprintf(buf
, fmt
, args
);
1394 copy_mem_info(info
, buf
, len
);
1399 * Copy formatted information into the input buffer.
1401 static int sym_host_info(struct sym_hcb
*np
, char *ptr
, off_t offset
, int len
)
1403 struct info_str info
;
1407 info
.offset
= offset
;
1410 copy_info(&info
, "Chip " NAME53C
"%s, device id 0x%x, "
1411 "revision id 0x%x\n",
1412 np
->s
.chip_name
, np
->device_id
, np
->revision_id
);
1413 copy_info(&info
, "At PCI address %s, IRQ " IRQ_FMT
"\n",
1414 pci_name(np
->s
.device
), IRQ_PRM(np
->s
.irq
));
1415 copy_info(&info
, "Min. period factor %d, %s SCSI BUS%s\n",
1416 (int) (np
->minsync_dt
? np
->minsync_dt
: np
->minsync
),
1417 np
->maxwide
? "Wide" : "Narrow",
1418 np
->minsync_dt
? ", DT capable" : "");
1420 copy_info(&info
, "Max. started commands %d, "
1421 "max. commands per LUN %d\n",
1422 SYM_CONF_MAX_START
, SYM_CONF_MAX_TAG
);
1424 return info
.pos
> info
.offset
? info
.pos
- info
.offset
: 0;
1426 #endif /* SYM_LINUX_USER_INFO_SUPPORT */
1429 * Entry point of the scsi proc fs of the driver.
1430 * - func = 0 means read (returns adapter infos)
1431 * - func = 1 means write (not yet merget from sym53c8xx)
1433 static int sym53c8xx_proc_info(struct Scsi_Host
*host
, char *buffer
,
1434 char **start
, off_t offset
, int length
, int func
)
1436 struct sym_hcb
*np
= sym_get_hcb(host
);
1440 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
1441 retv
= sym_user_command(np
, buffer
, length
);
1448 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1449 retv
= sym_host_info(np
, buffer
, offset
, length
);
1457 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */
1460 * Free controller resources.
1462 static void sym_free_resources(struct sym_hcb
*np
, struct pci_dev
*pdev
)
1465 * Free O/S specific resources.
1468 free_irq(np
->s
.irq
, np
);
1470 pci_iounmap(pdev
, np
->s
.ioaddr
);
1472 pci_iounmap(pdev
, np
->s
.ramaddr
);
1474 * Free O/S independent resources.
1478 sym_mfree_dma(np
, sizeof(*np
), "HCB");
1482 * Ask/tell the system about DMA addressing.
1484 static int sym_setup_bus_dma_mask(struct sym_hcb
*np
)
1486 #if SYM_CONF_DMA_ADDRESSING_MODE > 0
1487 #if SYM_CONF_DMA_ADDRESSING_MODE == 1
1488 #define DMA_DAC_MASK 0x000000ffffffffffULL /* 40-bit */
1489 #elif SYM_CONF_DMA_ADDRESSING_MODE == 2
1490 #define DMA_DAC_MASK DMA_64BIT_MASK
1492 if ((np
->features
& FE_DAC
) &&
1493 !pci_set_dma_mask(np
->s
.device
, DMA_DAC_MASK
)) {
1499 if (!pci_set_dma_mask(np
->s
.device
, DMA_32BIT_MASK
))
1502 printf_warning("%s: No suitable DMA available\n", sym_name(np
));
1507 * Host attach and initialisations.
1509 * Allocate host data and ncb structure.
1510 * Remap MMIO region.
1511 * Do chip initialization.
1512 * If all is OK, install interrupt handling and
1513 * start the timer daemon.
1515 static struct Scsi_Host
* __devinit
sym_attach(struct scsi_host_template
*tpnt
,
1516 int unit
, struct sym_device
*dev
)
1518 struct host_data
*host_data
;
1519 struct sym_hcb
*np
= NULL
;
1520 struct Scsi_Host
*instance
= NULL
;
1521 struct pci_dev
*pdev
= dev
->pdev
;
1522 unsigned long flags
;
1526 "sym%d: <%s> rev 0x%x at pci %s irq " IRQ_FMT
"\n",
1527 unit
, dev
->chip
.name
, dev
->chip
.revision_id
,
1528 pci_name(pdev
), IRQ_PRM(pdev
->irq
));
1531 * Get the firmware for this chip.
1533 fw
= sym_find_firmware(&dev
->chip
);
1538 * Allocate host_data structure
1540 instance
= scsi_host_alloc(tpnt
, sizeof(*host_data
));
1543 host_data
= (struct host_data
*) instance
->hostdata
;
1546 * Allocate immediately the host control block,
1547 * since we are only expecting to succeed. :)
1548 * We keep track in the HCB of all the resources that
1549 * are to be released on error.
1551 np
= __sym_calloc_dma(&pdev
->dev
, sizeof(*np
), "HCB");
1554 np
->s
.device
= pdev
;
1555 np
->bus_dmat
= &pdev
->dev
; /* Result in 1 DMA pool per HBA */
1556 host_data
->ncb
= np
;
1557 np
->s
.host
= instance
;
1559 pci_set_drvdata(pdev
, np
);
1562 * Copy some useful infos to the HCB.
1564 np
->hcb_ba
= vtobus(np
);
1565 np
->verbose
= sym_driver_setup
.verbose
;
1566 np
->s
.device
= pdev
;
1568 np
->device_id
= dev
->chip
.device_id
;
1569 np
->revision_id
= dev
->chip
.revision_id
;
1570 np
->features
= dev
->chip
.features
;
1571 np
->clock_divn
= dev
->chip
.nr_divisor
;
1572 np
->maxoffs
= dev
->chip
.offset_max
;
1573 np
->maxburst
= dev
->chip
.burst_max
;
1574 np
->myaddr
= dev
->host_id
;
1579 strlcpy(np
->s
.chip_name
, dev
->chip
.name
, sizeof(np
->s
.chip_name
));
1580 sprintf(np
->s
.inst_name
, "sym%d", np
->s
.unit
);
1582 if (sym_setup_bus_dma_mask(np
))
1586 * Try to map the controller chip to
1587 * virtual and physical memory.
1589 np
->mmio_ba
= (u32
)dev
->mmio_base
;
1590 np
->s
.ioaddr
= dev
->s
.ioaddr
;
1591 np
->s
.ramaddr
= dev
->s
.ramaddr
;
1592 np
->s
.io_ws
= (np
->features
& FE_IO256
) ? 256 : 128;
1595 * Map on-chip RAM if present and supported.
1597 if (!(np
->features
& FE_RAM
))
1599 if (dev
->ram_base
) {
1600 np
->ram_ba
= (u32
)dev
->ram_base
;
1601 np
->ram_ws
= (np
->features
& FE_RAM8K
) ? 8192 : 4096;
1604 if (sym_hcb_attach(instance
, fw
, dev
->nvram
))
1608 * Install the interrupt handler.
1609 * If we synchonize the C code with SCRIPTS on interrupt,
1610 * we do not want to share the INTR line at all.
1612 if (request_irq(pdev
->irq
, sym53c8xx_intr
, SA_SHIRQ
, NAME53C8XX
, np
)) {
1613 printf_err("%s: request irq %d failure\n",
1614 sym_name(np
), pdev
->irq
);
1617 np
->s
.irq
= pdev
->irq
;
1620 * After SCSI devices have been opened, we cannot
1621 * reset the bus safely, so we do it here.
1623 spin_lock_irqsave(instance
->host_lock
, flags
);
1624 if (sym_reset_scsi_bus(np
, 0))
1628 * Start the SCRIPTS.
1630 sym_start_up (np
, 1);
1633 * Start the timer daemon
1635 init_timer(&np
->s
.timer
);
1636 np
->s
.timer
.data
= (unsigned long) np
;
1637 np
->s
.timer
.function
= sym53c8xx_timer
;
1642 * Fill Linux host instance structure
1643 * and return success.
1645 instance
->max_channel
= 0;
1646 instance
->this_id
= np
->myaddr
;
1647 instance
->max_id
= np
->maxwide
? 16 : 8;
1648 instance
->max_lun
= SYM_CONF_MAX_LUN
;
1649 instance
->unique_id
= pci_resource_start(pdev
, 0);
1650 instance
->cmd_per_lun
= SYM_CONF_MAX_TAG
;
1651 instance
->can_queue
= (SYM_CONF_MAX_START
-2);
1652 instance
->sg_tablesize
= SYM_CONF_MAX_SG
;
1653 instance
->max_cmd_len
= 16;
1654 BUG_ON(sym2_transport_template
== NULL
);
1655 instance
->transportt
= sym2_transport_template
;
1657 spin_unlock_irqrestore(instance
->host_lock
, flags
);
1662 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
1663 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np
));
1664 spin_unlock_irqrestore(instance
->host_lock
, flags
);
1668 printf_info("%s: giving up ...\n", sym_name(np
));
1670 sym_free_resources(np
, pdev
);
1671 scsi_host_put(instance
);
1678 * Detect and try to read SYMBIOS and TEKRAM NVRAM.
1680 #if SYM_CONF_NVRAM_SUPPORT
1681 static void __devinit
sym_get_nvram(struct sym_device
*devp
, struct sym_nvram
*nvp
)
1684 devp
->device_id
= devp
->chip
.device_id
;
1687 sym_read_nvram(devp
, nvp
);
1690 static inline void sym_get_nvram(struct sym_device
*devp
, struct sym_nvram
*nvp
)
1693 #endif /* SYM_CONF_NVRAM_SUPPORT */
1695 static int __devinit
sym_check_supported(struct sym_device
*device
)
1697 struct sym_chip
*chip
;
1698 struct pci_dev
*pdev
= device
->pdev
;
1700 unsigned long io_port
= pci_resource_start(pdev
, 0);
1704 * If user excluded this chip, do not initialize it.
1705 * I hate this code so much. Must kill it.
1708 for (i
= 0 ; i
< 8 ; i
++) {
1709 if (sym_driver_setup
.excludes
[i
] == io_port
)
1715 * Check if the chip is supported. Then copy the chip description
1716 * to our device structure so we can make it match the actual device
1719 pci_read_config_byte(pdev
, PCI_CLASS_REVISION
, &revision
);
1720 chip
= sym_lookup_chip_table(pdev
->device
, revision
);
1722 dev_info(&pdev
->dev
, "device not supported\n");
1725 memcpy(&device
->chip
, chip
, sizeof(device
->chip
));
1726 device
->chip
.revision_id
= revision
;
1732 * Ignore Symbios chips controlled by various RAID controllers.
1733 * These controllers set value 0x52414944 at RAM end - 16.
1735 static int __devinit
sym_check_raid(struct sym_device
*device
)
1737 unsigned int ram_size
, ram_val
;
1739 if (!device
->s
.ramaddr
)
1742 if (device
->chip
.features
& FE_RAM8K
)
1747 ram_val
= readl(device
->s
.ramaddr
+ ram_size
- 16);
1748 if (ram_val
!= 0x52414944)
1751 dev_info(&device
->pdev
->dev
,
1752 "not initializing, driven by RAID controller.\n");
1756 static int __devinit
sym_set_workarounds(struct sym_device
*device
)
1758 struct sym_chip
*chip
= &device
->chip
;
1759 struct pci_dev
*pdev
= device
->pdev
;
1763 * (ITEM 12 of a DEL about the 896 I haven't yet).
1764 * We must ensure the chip will use WRITE AND INVALIDATE.
1765 * The revision number limit is for now arbitrary.
1767 if (pdev
->device
== PCI_DEVICE_ID_NCR_53C896
&& chip
->revision_id
< 0x4) {
1768 chip
->features
|= (FE_WRIE
| FE_CLSE
);
1771 /* If the chip can do Memory Write Invalidate, enable it */
1772 if (chip
->features
& FE_WRIE
) {
1773 if (pci_set_mwi(pdev
))
1778 * Work around for errant bit in 895A. The 66Mhz
1779 * capable bit is set erroneously. Clear this bit.
1782 * Make sure Config space and Features agree.
1784 * Recall: writes are not normal to status register -
1785 * write a 1 to clear and a 0 to leave unchanged.
1786 * Can only reset bits.
1788 pci_read_config_word(pdev
, PCI_STATUS
, &status_reg
);
1789 if (chip
->features
& FE_66MHZ
) {
1790 if (!(status_reg
& PCI_STATUS_66MHZ
))
1791 chip
->features
&= ~FE_66MHZ
;
1793 if (status_reg
& PCI_STATUS_66MHZ
) {
1794 status_reg
= PCI_STATUS_66MHZ
;
1795 pci_write_config_word(pdev
, PCI_STATUS
, status_reg
);
1796 pci_read_config_word(pdev
, PCI_STATUS
, &status_reg
);
1804 * Read and check the PCI configuration for any detected NCR
1805 * boards and save data for attaching after all boards have
1808 static void __devinit
1809 sym_init_device(struct pci_dev
*pdev
, struct sym_device
*device
)
1813 device
->host_id
= SYM_SETUP_HOST_ID
;
1814 device
->pdev
= pdev
;
1816 i
= pci_get_base_address(pdev
, 1, &device
->mmio_base
);
1817 pci_get_base_address(pdev
, i
, &device
->ram_base
);
1819 #ifndef CONFIG_SCSI_SYM53C8XX_IOMAPPED
1820 if (device
->mmio_base
)
1821 device
->s
.ioaddr
= pci_iomap(pdev
, 1,
1822 pci_resource_len(pdev
, 1));
1824 if (!device
->s
.ioaddr
)
1825 device
->s
.ioaddr
= pci_iomap(pdev
, 0,
1826 pci_resource_len(pdev
, 0));
1827 if (device
->ram_base
)
1828 device
->s
.ramaddr
= pci_iomap(pdev
, i
,
1829 pci_resource_len(pdev
, i
));
1833 * The NCR PQS and PDS cards are constructed as a DEC bridge
1834 * behind which sits a proprietary NCR memory controller and
1835 * either four or two 53c875s as separate devices. We can tell
1836 * if an 875 is part of a PQS/PDS or not since if it is, it will
1837 * be on the same bus as the memory controller. In its usual
1838 * mode of operation, the 875s are slaved to the memory
1839 * controller for all transfers. To operate with the Linux
1840 * driver, the memory controller is disabled and the 875s
1841 * freed to function independently. The only wrinkle is that
1842 * the preset SCSI ID (which may be zero) must be read in from
1843 * a special configuration space register of the 875.
1845 static void sym_config_pqs(struct pci_dev
*pdev
, struct sym_device
*sym_dev
)
1850 for (slot
= 0; slot
< 256; slot
++) {
1851 struct pci_dev
*memc
= pci_get_slot(pdev
->bus
, slot
);
1853 if (!memc
|| memc
->vendor
!= 0x101a || memc
->device
== 0x0009) {
1858 /* bit 1: allow individual 875 configuration */
1859 pci_read_config_byte(memc
, 0x44, &tmp
);
1860 if ((tmp
& 0x2) == 0) {
1862 pci_write_config_byte(memc
, 0x44, tmp
);
1865 /* bit 2: drive individual 875 interrupts to the bus */
1866 pci_read_config_byte(memc
, 0x45, &tmp
);
1867 if ((tmp
& 0x4) == 0) {
1869 pci_write_config_byte(memc
, 0x45, tmp
);
1876 pci_read_config_byte(pdev
, 0x84, &tmp
);
1877 sym_dev
->host_id
= tmp
;
1881 * Called before unloading the module.
1883 * We have to free resources and halt the NCR chip.
1885 static int sym_detach(struct sym_hcb
*np
, struct pci_dev
*pdev
)
1887 printk("%s: detaching ...\n", sym_name(np
));
1889 del_timer_sync(&np
->s
.timer
);
1893 * We should use sym_soft_reset(), but we don't want to do
1894 * so, since we may not be safe if interrupts occur.
1896 printk("%s: resetting chip\n", sym_name(np
));
1897 OUTB(np
, nc_istat
, SRST
);
1900 OUTB(np
, nc_istat
, 0);
1902 sym_free_resources(np
, pdev
);
1908 * Driver host template.
1910 static struct scsi_host_template sym2_template
= {
1911 .module
= THIS_MODULE
,
1912 .name
= "sym53c8xx",
1913 .info
= sym53c8xx_info
,
1914 .queuecommand
= sym53c8xx_queue_command
,
1915 .slave_alloc
= sym53c8xx_slave_alloc
,
1916 .slave_configure
= sym53c8xx_slave_configure
,
1917 .eh_abort_handler
= sym53c8xx_eh_abort_handler
,
1918 .eh_device_reset_handler
= sym53c8xx_eh_device_reset_handler
,
1919 .eh_bus_reset_handler
= sym53c8xx_eh_bus_reset_handler
,
1920 .eh_host_reset_handler
= sym53c8xx_eh_host_reset_handler
,
1922 .use_clustering
= DISABLE_CLUSTERING
,
1923 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
1924 .proc_info
= sym53c8xx_proc_info
,
1925 .proc_name
= NAME53C8XX
,
1929 static int attach_count
;
1931 static int __devinit
sym2_probe(struct pci_dev
*pdev
,
1932 const struct pci_device_id
*ent
)
1934 struct sym_device sym_dev
;
1935 struct sym_nvram nvram
;
1936 struct Scsi_Host
*instance
;
1938 memset(&sym_dev
, 0, sizeof(sym_dev
));
1939 memset(&nvram
, 0, sizeof(nvram
));
1941 if (pci_enable_device(pdev
))
1944 pci_set_master(pdev
);
1946 if (pci_request_regions(pdev
, NAME53C8XX
))
1949 sym_init_device(pdev
, &sym_dev
);
1950 if (sym_check_supported(&sym_dev
))
1953 if (sym_check_raid(&sym_dev
))
1954 goto leave
; /* Don't disable the device */
1956 if (sym_set_workarounds(&sym_dev
))
1959 sym_config_pqs(pdev
, &sym_dev
);
1961 sym_get_nvram(&sym_dev
, &nvram
);
1963 instance
= sym_attach(&sym2_template
, attach_count
, &sym_dev
);
1967 if (scsi_add_host(instance
, &pdev
->dev
))
1969 scsi_scan_host(instance
);
1976 sym_detach(pci_get_drvdata(pdev
), pdev
);
1978 pci_release_regions(pdev
);
1980 pci_disable_device(pdev
);
1985 static void __devexit
sym2_remove(struct pci_dev
*pdev
)
1987 struct sym_hcb
*np
= pci_get_drvdata(pdev
);
1988 struct Scsi_Host
*host
= np
->s
.host
;
1990 scsi_remove_host(host
);
1991 scsi_host_put(host
);
1993 sym_detach(np
, pdev
);
1995 pci_release_regions(pdev
);
1996 pci_disable_device(pdev
);
2001 static void sym2_get_signalling(struct Scsi_Host
*shost
)
2003 struct sym_hcb
*np
= sym_get_hcb(shost
);
2004 enum spi_signal_type type
;
2006 switch (np
->scsi_mode
) {
2008 type
= SPI_SIGNAL_SE
;
2011 type
= SPI_SIGNAL_LVD
;
2014 type
= SPI_SIGNAL_HVD
;
2017 type
= SPI_SIGNAL_UNKNOWN
;
2020 spi_signalling(shost
) = type
;
2023 static void sym2_set_offset(struct scsi_target
*starget
, int offset
)
2025 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2026 struct sym_hcb
*np
= sym_get_hcb(shost
);
2027 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2029 tp
->tgoal
.offset
= offset
;
2030 tp
->tgoal
.check_nego
= 1;
2033 static void sym2_set_period(struct scsi_target
*starget
, int period
)
2035 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2036 struct sym_hcb
*np
= sym_get_hcb(shost
);
2037 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2039 /* have to have DT for these transfers, but DT will also
2040 * set width, so check that this is allowed */
2041 if (period
<= np
->minsync
&& spi_width(starget
))
2044 tp
->tgoal
.period
= period
;
2045 tp
->tgoal
.check_nego
= 1;
2048 static void sym2_set_width(struct scsi_target
*starget
, int width
)
2050 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2051 struct sym_hcb
*np
= sym_get_hcb(shost
);
2052 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2054 /* It is illegal to have DT set on narrow transfers. If DT is
2055 * clear, we must also clear IU and QAS. */
2057 tp
->tgoal
.iu
= tp
->tgoal
.dt
= tp
->tgoal
.qas
= 0;
2059 tp
->tgoal
.width
= width
;
2060 tp
->tgoal
.check_nego
= 1;
2063 static void sym2_set_dt(struct scsi_target
*starget
, int dt
)
2065 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2066 struct sym_hcb
*np
= sym_get_hcb(shost
);
2067 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2069 /* We must clear QAS and IU if DT is clear */
2073 tp
->tgoal
.iu
= tp
->tgoal
.dt
= tp
->tgoal
.qas
= 0;
2074 tp
->tgoal
.check_nego
= 1;
2077 static void sym2_set_iu(struct scsi_target
*starget
, int iu
)
2079 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2080 struct sym_hcb
*np
= sym_get_hcb(shost
);
2081 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2084 tp
->tgoal
.iu
= tp
->tgoal
.dt
= 1;
2087 tp
->tgoal
.check_nego
= 1;
2090 static void sym2_set_qas(struct scsi_target
*starget
, int qas
)
2092 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2093 struct sym_hcb
*np
= sym_get_hcb(shost
);
2094 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2097 tp
->tgoal
.dt
= tp
->tgoal
.qas
= 1;
2100 tp
->tgoal
.check_nego
= 1;
2104 static struct spi_function_template sym2_transport_functions
= {
2105 .set_offset
= sym2_set_offset
,
2107 .set_period
= sym2_set_period
,
2109 .set_width
= sym2_set_width
,
2111 .set_dt
= sym2_set_dt
,
2113 .set_iu
= sym2_set_iu
,
2115 .set_qas
= sym2_set_qas
,
2117 .get_signalling
= sym2_get_signalling
,
2120 static struct pci_device_id sym2_id_table
[] __devinitdata
= {
2121 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C810
,
2122 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2123 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C820
,
2124 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL }, /* new */
2125 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C825
,
2126 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2127 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C815
,
2128 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2129 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C810AP
,
2130 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL }, /* new */
2131 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C860
,
2132 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2133 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1510
,
2134 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2135 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C896
,
2136 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2137 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C895
,
2138 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2139 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C885
,
2140 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2141 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C875
,
2142 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2143 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C1510
,
2144 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL }, /* new */
2145 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C895A
,
2146 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2147 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C875A
,
2148 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2149 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1010_33
,
2150 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2151 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1010_66
,
2152 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2153 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C875J
,
2154 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2158 MODULE_DEVICE_TABLE(pci
, sym2_id_table
);
2160 static struct pci_driver sym2_driver
= {
2162 .id_table
= sym2_id_table
,
2163 .probe
= sym2_probe
,
2164 .remove
= __devexit_p(sym2_remove
),
2167 static int __init
sym2_init(void)
2171 sym2_setup_params();
2172 sym2_transport_template
= spi_attach_transport(&sym2_transport_functions
);
2173 if (!sym2_transport_template
)
2176 error
= pci_register_driver(&sym2_driver
);
2178 spi_release_transport(sym2_transport_template
);
2182 static void __exit
sym2_exit(void)
2184 pci_unregister_driver(&sym2_driver
);
2185 spi_release_transport(sym2_transport_template
);
2188 module_init(sym2_init
);
2189 module_exit(sym2_exit
);