2 * Disk Array driver for HP Smart Array controllers.
3 * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
23 #include <linux/module.h>
24 #include <linux/interrupt.h>
25 #include <linux/types.h>
26 #include <linux/pci.h>
27 #include <linux/kernel.h>
28 #include <linux/slab.h>
29 #include <linux/delay.h>
30 #include <linux/major.h>
32 #include <linux/bio.h>
33 #include <linux/blkpg.h>
34 #include <linux/timer.h>
35 #include <linux/proc_fs.h>
36 #include <linux/seq_file.h>
37 #include <linux/init.h>
38 #include <linux/jiffies.h>
39 #include <linux/hdreg.h>
40 #include <linux/spinlock.h>
41 #include <linux/compat.h>
42 #include <linux/mutex.h>
43 #include <asm/uaccess.h>
46 #include <linux/dma-mapping.h>
47 #include <linux/blkdev.h>
48 #include <linux/genhd.h>
49 #include <linux/completion.h>
50 #include <scsi/scsi.h>
52 #include <scsi/scsi_ioctl.h>
53 #include <linux/cdrom.h>
54 #include <linux/scatterlist.h>
55 #include <linux/kthread.h>
57 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
58 #define DRIVER_NAME "HP CISS Driver (v 3.6.26)"
59 #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26)
61 /* Embedded module documentation macros - see modules.h */
62 MODULE_AUTHOR("Hewlett-Packard Company");
63 MODULE_DESCRIPTION("Driver for HP Smart Array Controllers");
64 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
65 MODULE_VERSION("3.6.26");
66 MODULE_LICENSE("GPL");
68 static DEFINE_MUTEX(cciss_mutex
);
69 static struct proc_dir_entry
*proc_cciss
;
71 #include "cciss_cmd.h"
73 #include <linux/cciss_ioctl.h>
75 /* define the PCI info for the cards we can control */
76 static const struct pci_device_id cciss_pci_device_id
[] = {
77 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISS
, 0x0E11, 0x4070},
78 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4080},
79 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4082},
80 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4083},
81 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x4091},
82 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409A},
83 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409B},
84 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409C},
85 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409D},
86 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSA
, 0x103C, 0x3225},
87 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3223},
88 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3234},
89 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3235},
90 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3211},
91 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3212},
92 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3213},
93 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3214},
94 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3215},
95 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3237},
96 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x323D},
100 MODULE_DEVICE_TABLE(pci
, cciss_pci_device_id
);
102 /* board_id = Subsystem Device ID & Vendor ID
103 * product = Marketing Name for the board
104 * access = Address of the struct of function pointers
106 static struct board_type products
[] = {
107 {0x40700E11, "Smart Array 5300", &SA5_access
},
108 {0x40800E11, "Smart Array 5i", &SA5B_access
},
109 {0x40820E11, "Smart Array 532", &SA5B_access
},
110 {0x40830E11, "Smart Array 5312", &SA5B_access
},
111 {0x409A0E11, "Smart Array 641", &SA5_access
},
112 {0x409B0E11, "Smart Array 642", &SA5_access
},
113 {0x409C0E11, "Smart Array 6400", &SA5_access
},
114 {0x409D0E11, "Smart Array 6400 EM", &SA5_access
},
115 {0x40910E11, "Smart Array 6i", &SA5_access
},
116 {0x3225103C, "Smart Array P600", &SA5_access
},
117 {0x3223103C, "Smart Array P800", &SA5_access
},
118 {0x3234103C, "Smart Array P400", &SA5_access
},
119 {0x3235103C, "Smart Array P400i", &SA5_access
},
120 {0x3211103C, "Smart Array E200i", &SA5_access
},
121 {0x3212103C, "Smart Array E200", &SA5_access
},
122 {0x3213103C, "Smart Array E200i", &SA5_access
},
123 {0x3214103C, "Smart Array E200i", &SA5_access
},
124 {0x3215103C, "Smart Array E200i", &SA5_access
},
125 {0x3237103C, "Smart Array E500", &SA5_access
},
126 {0x3223103C, "Smart Array P800", &SA5_access
},
127 {0x3234103C, "Smart Array P400", &SA5_access
},
128 {0x323D103C, "Smart Array P700m", &SA5_access
},
131 /* How long to wait (in milliseconds) for board to go into simple mode */
132 #define MAX_CONFIG_WAIT 30000
133 #define MAX_IOCTL_CONFIG_WAIT 1000
135 /*define how many times we will try a command because of bus resets */
136 #define MAX_CMD_RETRIES 3
140 /* Originally cciss driver only supports 8 major numbers */
141 #define MAX_CTLR_ORIG 8
143 static ctlr_info_t
*hba
[MAX_CTLR
];
145 static struct task_struct
*cciss_scan_thread
;
146 static DEFINE_MUTEX(scan_mutex
);
147 static LIST_HEAD(scan_q
);
149 static void do_cciss_request(struct request_queue
*q
);
150 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
);
151 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
);
152 static int cciss_open(struct block_device
*bdev
, fmode_t mode
);
153 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
);
154 static int cciss_release(struct gendisk
*disk
, fmode_t mode
);
155 static int do_ioctl(struct block_device
*bdev
, fmode_t mode
,
156 unsigned int cmd
, unsigned long arg
);
157 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
158 unsigned int cmd
, unsigned long arg
);
159 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
);
161 static int cciss_revalidate(struct gendisk
*disk
);
162 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
, int via_ioctl
);
163 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
164 int clear_all
, int via_ioctl
);
166 static void cciss_read_capacity(ctlr_info_t
*h
, int logvol
,
167 sector_t
*total_size
, unsigned int *block_size
);
168 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
169 sector_t
*total_size
, unsigned int *block_size
);
170 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
172 unsigned int block_size
, InquiryData_struct
*inq_buff
,
173 drive_info_struct
*drv
);
174 static void __devinit
cciss_interrupt_mode(ctlr_info_t
*);
175 static void start_io(ctlr_info_t
*h
);
176 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
177 __u8 page_code
, unsigned char scsi3addr
[],
179 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
181 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
);
183 static int add_to_scan_list(struct ctlr_info
*h
);
184 static int scan_thread(void *data
);
185 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
);
186 static void cciss_hba_release(struct device
*dev
);
187 static void cciss_device_release(struct device
*dev
);
188 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
);
189 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
);
190 static inline u32
next_command(ctlr_info_t
*h
);
191 static int __devinit
cciss_find_cfg_addrs(struct pci_dev
*pdev
,
192 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
194 static int __devinit
cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
195 unsigned long *memory_bar
);
196 static inline u32
cciss_tag_discard_error_bits(ctlr_info_t
*h
, u32 tag
);
197 static __devinit
int write_driver_ver_to_cfgtable(
198 CfgTable_struct __iomem
*cfgtable
);
200 /* performant mode helper functions */
201 static void calc_bucket_map(int *bucket
, int num_buckets
, int nsgs
,
203 static void cciss_put_controller_into_performant_mode(ctlr_info_t
*h
);
205 #ifdef CONFIG_PROC_FS
206 static void cciss_procinit(ctlr_info_t
*h
);
208 static void cciss_procinit(ctlr_info_t
*h
)
211 #endif /* CONFIG_PROC_FS */
214 static int cciss_compat_ioctl(struct block_device
*, fmode_t
,
215 unsigned, unsigned long);
218 static const struct block_device_operations cciss_fops
= {
219 .owner
= THIS_MODULE
,
220 .open
= cciss_unlocked_open
,
221 .release
= cciss_release
,
223 .getgeo
= cciss_getgeo
,
225 .compat_ioctl
= cciss_compat_ioctl
,
227 .revalidate_disk
= cciss_revalidate
,
230 /* set_performant_mode: Modify the tag for cciss performant
231 * set bit 0 for pull model, bits 3-1 for block fetch
234 static void set_performant_mode(ctlr_info_t
*h
, CommandList_struct
*c
)
236 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
237 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
241 * Enqueuing and dequeuing functions for cmdlists.
243 static inline void addQ(struct list_head
*list
, CommandList_struct
*c
)
245 list_add_tail(&c
->list
, list
);
248 static inline void removeQ(CommandList_struct
*c
)
251 * After kexec/dump some commands might still
252 * be in flight, which the firmware will try
253 * to complete. Resetting the firmware doesn't work
254 * with old fw revisions, so we have to mark
255 * them off as 'stale' to prevent the driver from
258 if (WARN_ON(list_empty(&c
->list
))) {
259 c
->cmd_type
= CMD_MSG_STALE
;
263 list_del_init(&c
->list
);
266 static void enqueue_cmd_and_start_io(ctlr_info_t
*h
,
267 CommandList_struct
*c
)
270 set_performant_mode(h
, c
);
271 spin_lock_irqsave(&h
->lock
, flags
);
274 if (h
->Qdepth
> h
->maxQsinceinit
)
275 h
->maxQsinceinit
= h
->Qdepth
;
277 spin_unlock_irqrestore(&h
->lock
, flags
);
280 static void cciss_free_sg_chain_blocks(SGDescriptor_struct
**cmd_sg_list
,
287 for (i
= 0; i
< nr_cmds
; i
++) {
288 kfree(cmd_sg_list
[i
]);
289 cmd_sg_list
[i
] = NULL
;
294 static SGDescriptor_struct
**cciss_allocate_sg_chain_blocks(
295 ctlr_info_t
*h
, int chainsize
, int nr_cmds
)
298 SGDescriptor_struct
**cmd_sg_list
;
303 cmd_sg_list
= kmalloc(sizeof(*cmd_sg_list
) * nr_cmds
, GFP_KERNEL
);
307 /* Build up chain blocks for each command */
308 for (j
= 0; j
< nr_cmds
; j
++) {
309 /* Need a block of chainsized s/g elements. */
310 cmd_sg_list
[j
] = kmalloc((chainsize
*
311 sizeof(*cmd_sg_list
[j
])), GFP_KERNEL
);
312 if (!cmd_sg_list
[j
]) {
313 dev_err(&h
->pdev
->dev
, "Cannot get memory "
314 "for s/g chains.\n");
320 cciss_free_sg_chain_blocks(cmd_sg_list
, nr_cmds
);
324 static void cciss_unmap_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
)
326 SGDescriptor_struct
*chain_sg
;
329 if (c
->Header
.SGTotal
<= h
->max_cmd_sgentries
)
332 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
333 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
334 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
335 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
338 static void cciss_map_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
,
339 SGDescriptor_struct
*chain_block
, int len
)
341 SGDescriptor_struct
*chain_sg
;
344 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
345 chain_sg
->Ext
= CCISS_SG_CHAIN
;
347 temp64
.val
= pci_map_single(h
->pdev
, chain_block
, len
,
349 chain_sg
->Addr
.lower
= temp64
.val32
.lower
;
350 chain_sg
->Addr
.upper
= temp64
.val32
.upper
;
353 #include "cciss_scsi.c" /* For SCSI tape support */
355 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
358 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1)
360 #ifdef CONFIG_PROC_FS
363 * Report information about this controller.
365 #define ENG_GIG 1000000000
366 #define ENG_GIG_FACTOR (ENG_GIG/512)
367 #define ENGAGE_SCSI "engage scsi"
369 static void cciss_seq_show_header(struct seq_file
*seq
)
371 ctlr_info_t
*h
= seq
->private;
373 seq_printf(seq
, "%s: HP %s Controller\n"
374 "Board ID: 0x%08lx\n"
375 "Firmware Version: %c%c%c%c\n"
377 "Logical drives: %d\n"
378 "Current Q depth: %d\n"
379 "Current # commands on controller: %d\n"
380 "Max Q depth since init: %d\n"
381 "Max # commands on controller since init: %d\n"
382 "Max SG entries since init: %d\n",
385 (unsigned long)h
->board_id
,
386 h
->firm_ver
[0], h
->firm_ver
[1], h
->firm_ver
[2],
387 h
->firm_ver
[3], (unsigned int)h
->intr
[PERF_MODE_INT
],
389 h
->Qdepth
, h
->commands_outstanding
,
390 h
->maxQsinceinit
, h
->max_outstanding
, h
->maxSG
);
392 #ifdef CONFIG_CISS_SCSI_TAPE
393 cciss_seq_tape_report(seq
, h
);
394 #endif /* CONFIG_CISS_SCSI_TAPE */
397 static void *cciss_seq_start(struct seq_file
*seq
, loff_t
*pos
)
399 ctlr_info_t
*h
= seq
->private;
402 /* prevent displaying bogus info during configuration
403 * or deconfiguration of a logical volume
405 spin_lock_irqsave(&h
->lock
, flags
);
406 if (h
->busy_configuring
) {
407 spin_unlock_irqrestore(&h
->lock
, flags
);
408 return ERR_PTR(-EBUSY
);
410 h
->busy_configuring
= 1;
411 spin_unlock_irqrestore(&h
->lock
, flags
);
414 cciss_seq_show_header(seq
);
419 static int cciss_seq_show(struct seq_file
*seq
, void *v
)
421 sector_t vol_sz
, vol_sz_frac
;
422 ctlr_info_t
*h
= seq
->private;
423 unsigned ctlr
= h
->ctlr
;
425 drive_info_struct
*drv
= h
->drv
[*pos
];
427 if (*pos
> h
->highest_lun
)
430 if (drv
== NULL
) /* it's possible for h->drv[] to have holes. */
436 vol_sz
= drv
->nr_blocks
;
437 vol_sz_frac
= sector_div(vol_sz
, ENG_GIG_FACTOR
);
439 sector_div(vol_sz_frac
, ENG_GIG_FACTOR
);
441 if (drv
->raid_level
< 0 || drv
->raid_level
> RAID_UNKNOWN
)
442 drv
->raid_level
= RAID_UNKNOWN
;
443 seq_printf(seq
, "cciss/c%dd%d:"
444 "\t%4u.%02uGB\tRAID %s\n",
445 ctlr
, (int) *pos
, (int)vol_sz
, (int)vol_sz_frac
,
446 raid_label
[drv
->raid_level
]);
450 static void *cciss_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
452 ctlr_info_t
*h
= seq
->private;
454 if (*pos
> h
->highest_lun
)
461 static void cciss_seq_stop(struct seq_file
*seq
, void *v
)
463 ctlr_info_t
*h
= seq
->private;
465 /* Only reset h->busy_configuring if we succeeded in setting
466 * it during cciss_seq_start. */
467 if (v
== ERR_PTR(-EBUSY
))
470 h
->busy_configuring
= 0;
473 static const struct seq_operations cciss_seq_ops
= {
474 .start
= cciss_seq_start
,
475 .show
= cciss_seq_show
,
476 .next
= cciss_seq_next
,
477 .stop
= cciss_seq_stop
,
480 static int cciss_seq_open(struct inode
*inode
, struct file
*file
)
482 int ret
= seq_open(file
, &cciss_seq_ops
);
483 struct seq_file
*seq
= file
->private_data
;
486 seq
->private = PDE(inode
)->data
;
492 cciss_proc_write(struct file
*file
, const char __user
*buf
,
493 size_t length
, loff_t
*ppos
)
498 #ifndef CONFIG_CISS_SCSI_TAPE
502 if (!buf
|| length
> PAGE_SIZE
- 1)
505 buffer
= (char *)__get_free_page(GFP_KERNEL
);
510 if (copy_from_user(buffer
, buf
, length
))
512 buffer
[length
] = '\0';
514 #ifdef CONFIG_CISS_SCSI_TAPE
515 if (strncmp(ENGAGE_SCSI
, buffer
, sizeof ENGAGE_SCSI
- 1) == 0) {
516 struct seq_file
*seq
= file
->private_data
;
517 ctlr_info_t
*h
= seq
->private;
519 err
= cciss_engage_scsi(h
);
523 #endif /* CONFIG_CISS_SCSI_TAPE */
525 /* might be nice to have "disengage" too, but it's not
526 safely possible. (only 1 module use count, lock issues.) */
529 free_page((unsigned long)buffer
);
533 static const struct file_operations cciss_proc_fops
= {
534 .owner
= THIS_MODULE
,
535 .open
= cciss_seq_open
,
538 .release
= seq_release
,
539 .write
= cciss_proc_write
,
542 static void __devinit
cciss_procinit(ctlr_info_t
*h
)
544 struct proc_dir_entry
*pde
;
546 if (proc_cciss
== NULL
)
547 proc_cciss
= proc_mkdir("driver/cciss", NULL
);
550 pde
= proc_create_data(h
->devname
, S_IWUSR
| S_IRUSR
| S_IRGRP
|
552 &cciss_proc_fops
, h
);
554 #endif /* CONFIG_PROC_FS */
556 #define MAX_PRODUCT_NAME_LEN 19
558 #define to_hba(n) container_of(n, struct ctlr_info, dev)
559 #define to_drv(n) container_of(n, drive_info_struct, dev)
561 /* List of controllers which cannot be hard reset on kexec with reset_devices */
562 static u32 unresettable_controller
[] = {
563 0x324a103C, /* Smart Array P712m */
564 0x324b103C, /* SmartArray P711m */
565 0x3223103C, /* Smart Array P800 */
566 0x3234103C, /* Smart Array P400 */
567 0x3235103C, /* Smart Array P400i */
568 0x3211103C, /* Smart Array E200i */
569 0x3212103C, /* Smart Array E200 */
570 0x3213103C, /* Smart Array E200i */
571 0x3214103C, /* Smart Array E200i */
572 0x3215103C, /* Smart Array E200i */
573 0x3237103C, /* Smart Array E500 */
574 0x323D103C, /* Smart Array P700m */
575 0x409C0E11, /* Smart Array 6400 */
576 0x409D0E11, /* Smart Array 6400 EM */
579 /* List of controllers which cannot even be soft reset */
580 static u32 soft_unresettable_controller
[] = {
581 0x409C0E11, /* Smart Array 6400 */
582 0x409D0E11, /* Smart Array 6400 EM */
585 static int ctlr_is_hard_resettable(u32 board_id
)
589 for (i
= 0; i
< ARRAY_SIZE(unresettable_controller
); i
++)
590 if (unresettable_controller
[i
] == board_id
)
595 static int ctlr_is_soft_resettable(u32 board_id
)
599 for (i
= 0; i
< ARRAY_SIZE(soft_unresettable_controller
); i
++)
600 if (soft_unresettable_controller
[i
] == board_id
)
605 static int ctlr_is_resettable(u32 board_id
)
607 return ctlr_is_hard_resettable(board_id
) ||
608 ctlr_is_soft_resettable(board_id
);
611 static ssize_t
host_show_resettable(struct device
*dev
,
612 struct device_attribute
*attr
,
615 struct ctlr_info
*h
= to_hba(dev
);
617 return snprintf(buf
, 20, "%d\n", ctlr_is_resettable(h
->board_id
));
619 static DEVICE_ATTR(resettable
, S_IRUGO
, host_show_resettable
, NULL
);
621 static ssize_t
host_store_rescan(struct device
*dev
,
622 struct device_attribute
*attr
,
623 const char *buf
, size_t count
)
625 struct ctlr_info
*h
= to_hba(dev
);
628 wake_up_process(cciss_scan_thread
);
629 wait_for_completion_interruptible(&h
->scan_wait
);
633 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
635 static ssize_t
dev_show_unique_id(struct device
*dev
,
636 struct device_attribute
*attr
,
639 drive_info_struct
*drv
= to_drv(dev
);
640 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
645 spin_lock_irqsave(&h
->lock
, flags
);
646 if (h
->busy_configuring
)
649 memcpy(sn
, drv
->serial_no
, sizeof(sn
));
650 spin_unlock_irqrestore(&h
->lock
, flags
);
655 return snprintf(buf
, 16 * 2 + 2,
656 "%02X%02X%02X%02X%02X%02X%02X%02X"
657 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
658 sn
[0], sn
[1], sn
[2], sn
[3],
659 sn
[4], sn
[5], sn
[6], sn
[7],
660 sn
[8], sn
[9], sn
[10], sn
[11],
661 sn
[12], sn
[13], sn
[14], sn
[15]);
663 static DEVICE_ATTR(unique_id
, S_IRUGO
, dev_show_unique_id
, NULL
);
665 static ssize_t
dev_show_vendor(struct device
*dev
,
666 struct device_attribute
*attr
,
669 drive_info_struct
*drv
= to_drv(dev
);
670 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
671 char vendor
[VENDOR_LEN
+ 1];
675 spin_lock_irqsave(&h
->lock
, flags
);
676 if (h
->busy_configuring
)
679 memcpy(vendor
, drv
->vendor
, VENDOR_LEN
+ 1);
680 spin_unlock_irqrestore(&h
->lock
, flags
);
685 return snprintf(buf
, sizeof(vendor
) + 1, "%s\n", drv
->vendor
);
687 static DEVICE_ATTR(vendor
, S_IRUGO
, dev_show_vendor
, NULL
);
689 static ssize_t
dev_show_model(struct device
*dev
,
690 struct device_attribute
*attr
,
693 drive_info_struct
*drv
= to_drv(dev
);
694 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
695 char model
[MODEL_LEN
+ 1];
699 spin_lock_irqsave(&h
->lock
, flags
);
700 if (h
->busy_configuring
)
703 memcpy(model
, drv
->model
, MODEL_LEN
+ 1);
704 spin_unlock_irqrestore(&h
->lock
, flags
);
709 return snprintf(buf
, sizeof(model
) + 1, "%s\n", drv
->model
);
711 static DEVICE_ATTR(model
, S_IRUGO
, dev_show_model
, NULL
);
713 static ssize_t
dev_show_rev(struct device
*dev
,
714 struct device_attribute
*attr
,
717 drive_info_struct
*drv
= to_drv(dev
);
718 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
719 char rev
[REV_LEN
+ 1];
723 spin_lock_irqsave(&h
->lock
, flags
);
724 if (h
->busy_configuring
)
727 memcpy(rev
, drv
->rev
, REV_LEN
+ 1);
728 spin_unlock_irqrestore(&h
->lock
, flags
);
733 return snprintf(buf
, sizeof(rev
) + 1, "%s\n", drv
->rev
);
735 static DEVICE_ATTR(rev
, S_IRUGO
, dev_show_rev
, NULL
);
737 static ssize_t
cciss_show_lunid(struct device
*dev
,
738 struct device_attribute
*attr
, char *buf
)
740 drive_info_struct
*drv
= to_drv(dev
);
741 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
743 unsigned char lunid
[8];
745 spin_lock_irqsave(&h
->lock
, flags
);
746 if (h
->busy_configuring
) {
747 spin_unlock_irqrestore(&h
->lock
, flags
);
751 spin_unlock_irqrestore(&h
->lock
, flags
);
754 memcpy(lunid
, drv
->LunID
, sizeof(lunid
));
755 spin_unlock_irqrestore(&h
->lock
, flags
);
756 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
757 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
758 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
760 static DEVICE_ATTR(lunid
, S_IRUGO
, cciss_show_lunid
, NULL
);
762 static ssize_t
cciss_show_raid_level(struct device
*dev
,
763 struct device_attribute
*attr
, char *buf
)
765 drive_info_struct
*drv
= to_drv(dev
);
766 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
770 spin_lock_irqsave(&h
->lock
, flags
);
771 if (h
->busy_configuring
) {
772 spin_unlock_irqrestore(&h
->lock
, flags
);
775 raid
= drv
->raid_level
;
776 spin_unlock_irqrestore(&h
->lock
, flags
);
777 if (raid
< 0 || raid
> RAID_UNKNOWN
)
780 return snprintf(buf
, strlen(raid_label
[raid
]) + 7, "RAID %s\n",
783 static DEVICE_ATTR(raid_level
, S_IRUGO
, cciss_show_raid_level
, NULL
);
785 static ssize_t
cciss_show_usage_count(struct device
*dev
,
786 struct device_attribute
*attr
, char *buf
)
788 drive_info_struct
*drv
= to_drv(dev
);
789 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
793 spin_lock_irqsave(&h
->lock
, flags
);
794 if (h
->busy_configuring
) {
795 spin_unlock_irqrestore(&h
->lock
, flags
);
798 count
= drv
->usage_count
;
799 spin_unlock_irqrestore(&h
->lock
, flags
);
800 return snprintf(buf
, 20, "%d\n", count
);
802 static DEVICE_ATTR(usage_count
, S_IRUGO
, cciss_show_usage_count
, NULL
);
804 static struct attribute
*cciss_host_attrs
[] = {
805 &dev_attr_rescan
.attr
,
806 &dev_attr_resettable
.attr
,
810 static struct attribute_group cciss_host_attr_group
= {
811 .attrs
= cciss_host_attrs
,
814 static const struct attribute_group
*cciss_host_attr_groups
[] = {
815 &cciss_host_attr_group
,
819 static struct device_type cciss_host_type
= {
820 .name
= "cciss_host",
821 .groups
= cciss_host_attr_groups
,
822 .release
= cciss_hba_release
,
825 static struct attribute
*cciss_dev_attrs
[] = {
826 &dev_attr_unique_id
.attr
,
827 &dev_attr_model
.attr
,
828 &dev_attr_vendor
.attr
,
830 &dev_attr_lunid
.attr
,
831 &dev_attr_raid_level
.attr
,
832 &dev_attr_usage_count
.attr
,
836 static struct attribute_group cciss_dev_attr_group
= {
837 .attrs
= cciss_dev_attrs
,
840 static const struct attribute_group
*cciss_dev_attr_groups
[] = {
841 &cciss_dev_attr_group
,
845 static struct device_type cciss_dev_type
= {
846 .name
= "cciss_device",
847 .groups
= cciss_dev_attr_groups
,
848 .release
= cciss_device_release
,
851 static struct bus_type cciss_bus_type
= {
856 * cciss_hba_release is called when the reference count
857 * of h->dev goes to zero.
859 static void cciss_hba_release(struct device
*dev
)
862 * nothing to do, but need this to avoid a warning
863 * about not having a release handler from lib/kref.c.
868 * Initialize sysfs entry for each controller. This sets up and registers
869 * the 'cciss#' directory for each individual controller under
870 * /sys/bus/pci/devices/<dev>/.
872 static int cciss_create_hba_sysfs_entry(struct ctlr_info
*h
)
874 device_initialize(&h
->dev
);
875 h
->dev
.type
= &cciss_host_type
;
876 h
->dev
.bus
= &cciss_bus_type
;
877 dev_set_name(&h
->dev
, "%s", h
->devname
);
878 h
->dev
.parent
= &h
->pdev
->dev
;
880 return device_add(&h
->dev
);
884 * Remove sysfs entries for an hba.
886 static void cciss_destroy_hba_sysfs_entry(struct ctlr_info
*h
)
889 put_device(&h
->dev
); /* final put. */
892 /* cciss_device_release is called when the reference count
893 * of h->drv[x]dev goes to zero.
895 static void cciss_device_release(struct device
*dev
)
897 drive_info_struct
*drv
= to_drv(dev
);
902 * Initialize sysfs for each logical drive. This sets up and registers
903 * the 'c#d#' directory for each individual logical drive under
904 * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from
905 * /sys/block/cciss!c#d# to this entry.
907 static long cciss_create_ld_sysfs_entry(struct ctlr_info
*h
,
912 if (h
->drv
[drv_index
]->device_initialized
)
915 dev
= &h
->drv
[drv_index
]->dev
;
916 device_initialize(dev
);
917 dev
->type
= &cciss_dev_type
;
918 dev
->bus
= &cciss_bus_type
;
919 dev_set_name(dev
, "c%dd%d", h
->ctlr
, drv_index
);
920 dev
->parent
= &h
->dev
;
921 h
->drv
[drv_index
]->device_initialized
= 1;
922 return device_add(dev
);
926 * Remove sysfs entries for a logical drive.
928 static void cciss_destroy_ld_sysfs_entry(struct ctlr_info
*h
, int drv_index
,
931 struct device
*dev
= &h
->drv
[drv_index
]->dev
;
933 /* special case for c*d0, we only destroy it on controller exit */
934 if (drv_index
== 0 && !ctlr_exiting
)
938 put_device(dev
); /* the "final" put. */
939 h
->drv
[drv_index
] = NULL
;
943 * For operations that cannot sleep, a command block is allocated at init,
944 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
945 * which ones are free or in use.
947 static CommandList_struct
*cmd_alloc(ctlr_info_t
*h
)
949 CommandList_struct
*c
;
952 dma_addr_t cmd_dma_handle
, err_dma_handle
;
955 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
958 } while (test_and_set_bit(i
& (BITS_PER_LONG
- 1),
959 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
)) != 0);
961 memset(c
, 0, sizeof(CommandList_struct
));
962 cmd_dma_handle
= h
->cmd_pool_dhandle
+ i
* sizeof(CommandList_struct
);
963 c
->err_info
= h
->errinfo_pool
+ i
;
964 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
965 err_dma_handle
= h
->errinfo_pool_dhandle
966 + i
* sizeof(ErrorInfo_struct
);
971 INIT_LIST_HEAD(&c
->list
);
972 c
->busaddr
= (__u32
) cmd_dma_handle
;
973 temp64
.val
= (__u64
) err_dma_handle
;
974 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
975 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
976 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
982 /* allocate a command using pci_alloc_consistent, used for ioctls,
983 * etc., not for the main i/o path.
985 static CommandList_struct
*cmd_special_alloc(ctlr_info_t
*h
)
987 CommandList_struct
*c
;
989 dma_addr_t cmd_dma_handle
, err_dma_handle
;
991 c
= (CommandList_struct
*) pci_alloc_consistent(h
->pdev
,
992 sizeof(CommandList_struct
), &cmd_dma_handle
);
995 memset(c
, 0, sizeof(CommandList_struct
));
999 c
->err_info
= (ErrorInfo_struct
*)
1000 pci_alloc_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
1003 if (c
->err_info
== NULL
) {
1004 pci_free_consistent(h
->pdev
,
1005 sizeof(CommandList_struct
), c
, cmd_dma_handle
);
1008 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
1010 INIT_LIST_HEAD(&c
->list
);
1011 c
->busaddr
= (__u32
) cmd_dma_handle
;
1012 temp64
.val
= (__u64
) err_dma_handle
;
1013 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
1014 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
1015 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
1021 static void cmd_free(ctlr_info_t
*h
, CommandList_struct
*c
)
1025 i
= c
- h
->cmd_pool
;
1026 clear_bit(i
& (BITS_PER_LONG
- 1),
1027 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
));
1031 static void cmd_special_free(ctlr_info_t
*h
, CommandList_struct
*c
)
1035 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
1036 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
1037 pci_free_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
1038 c
->err_info
, (dma_addr_t
) temp64
.val
);
1039 pci_free_consistent(h
->pdev
, sizeof(CommandList_struct
), c
,
1040 (dma_addr_t
) cciss_tag_discard_error_bits(h
, (u32
) c
->busaddr
));
1043 static inline ctlr_info_t
*get_host(struct gendisk
*disk
)
1045 return disk
->queue
->queuedata
;
1048 static inline drive_info_struct
*get_drv(struct gendisk
*disk
)
1050 return disk
->private_data
;
1054 * Open. Make sure the device is really there.
1056 static int cciss_open(struct block_device
*bdev
, fmode_t mode
)
1058 ctlr_info_t
*h
= get_host(bdev
->bd_disk
);
1059 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1061 dev_dbg(&h
->pdev
->dev
, "cciss_open %s\n", bdev
->bd_disk
->disk_name
);
1062 if (drv
->busy_configuring
)
1065 * Root is allowed to open raw volume zero even if it's not configured
1066 * so array config can still work. Root is also allowed to open any
1067 * volume that has a LUN ID, so it can issue IOCTL to reread the
1068 * disk information. I don't think I really like this
1069 * but I'm already using way to many device nodes to claim another one
1070 * for "raw controller".
1072 if (drv
->heads
== 0) {
1073 if (MINOR(bdev
->bd_dev
) != 0) { /* not node 0? */
1074 /* if not node 0 make sure it is a partition = 0 */
1075 if (MINOR(bdev
->bd_dev
) & 0x0f) {
1077 /* if it is, make sure we have a LUN ID */
1078 } else if (memcmp(drv
->LunID
, CTLR_LUNID
,
1079 sizeof(drv
->LunID
))) {
1083 if (!capable(CAP_SYS_ADMIN
))
1091 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
)
1095 mutex_lock(&cciss_mutex
);
1096 ret
= cciss_open(bdev
, mode
);
1097 mutex_unlock(&cciss_mutex
);
1103 * Close. Sync first.
1105 static int cciss_release(struct gendisk
*disk
, fmode_t mode
)
1108 drive_info_struct
*drv
;
1110 mutex_lock(&cciss_mutex
);
1112 drv
= get_drv(disk
);
1113 dev_dbg(&h
->pdev
->dev
, "cciss_release %s\n", disk
->disk_name
);
1116 mutex_unlock(&cciss_mutex
);
1120 static int do_ioctl(struct block_device
*bdev
, fmode_t mode
,
1121 unsigned cmd
, unsigned long arg
)
1124 mutex_lock(&cciss_mutex
);
1125 ret
= cciss_ioctl(bdev
, mode
, cmd
, arg
);
1126 mutex_unlock(&cciss_mutex
);
1130 #ifdef CONFIG_COMPAT
1132 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1133 unsigned cmd
, unsigned long arg
);
1134 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1135 unsigned cmd
, unsigned long arg
);
1137 static int cciss_compat_ioctl(struct block_device
*bdev
, fmode_t mode
,
1138 unsigned cmd
, unsigned long arg
)
1141 case CCISS_GETPCIINFO
:
1142 case CCISS_GETINTINFO
:
1143 case CCISS_SETINTINFO
:
1144 case CCISS_GETNODENAME
:
1145 case CCISS_SETNODENAME
:
1146 case CCISS_GETHEARTBEAT
:
1147 case CCISS_GETBUSTYPES
:
1148 case CCISS_GETFIRMVER
:
1149 case CCISS_GETDRIVVER
:
1150 case CCISS_REVALIDVOLS
:
1151 case CCISS_DEREGDISK
:
1152 case CCISS_REGNEWDISK
:
1154 case CCISS_RESCANDISK
:
1155 case CCISS_GETLUNINFO
:
1156 return do_ioctl(bdev
, mode
, cmd
, arg
);
1158 case CCISS_PASSTHRU32
:
1159 return cciss_ioctl32_passthru(bdev
, mode
, cmd
, arg
);
1160 case CCISS_BIG_PASSTHRU32
:
1161 return cciss_ioctl32_big_passthru(bdev
, mode
, cmd
, arg
);
1164 return -ENOIOCTLCMD
;
1168 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1169 unsigned cmd
, unsigned long arg
)
1171 IOCTL32_Command_struct __user
*arg32
=
1172 (IOCTL32_Command_struct __user
*) arg
;
1173 IOCTL_Command_struct arg64
;
1174 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
1180 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1181 sizeof(arg64
.LUN_info
));
1183 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1184 sizeof(arg64
.Request
));
1186 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1187 sizeof(arg64
.error_info
));
1188 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1189 err
|= get_user(cp
, &arg32
->buf
);
1190 arg64
.buf
= compat_ptr(cp
);
1191 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1196 err
= do_ioctl(bdev
, mode
, CCISS_PASSTHRU
, (unsigned long)p
);
1200 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1201 sizeof(arg32
->error_info
));
1207 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1208 unsigned cmd
, unsigned long arg
)
1210 BIG_IOCTL32_Command_struct __user
*arg32
=
1211 (BIG_IOCTL32_Command_struct __user
*) arg
;
1212 BIG_IOCTL_Command_struct arg64
;
1213 BIG_IOCTL_Command_struct __user
*p
=
1214 compat_alloc_user_space(sizeof(arg64
));
1218 memset(&arg64
, 0, sizeof(arg64
));
1221 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1222 sizeof(arg64
.LUN_info
));
1224 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1225 sizeof(arg64
.Request
));
1227 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1228 sizeof(arg64
.error_info
));
1229 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1230 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
1231 err
|= get_user(cp
, &arg32
->buf
);
1232 arg64
.buf
= compat_ptr(cp
);
1233 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1238 err
= do_ioctl(bdev
, mode
, CCISS_BIG_PASSTHRU
, (unsigned long)p
);
1242 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1243 sizeof(arg32
->error_info
));
1250 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1252 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1254 if (!drv
->cylinders
)
1257 geo
->heads
= drv
->heads
;
1258 geo
->sectors
= drv
->sectors
;
1259 geo
->cylinders
= drv
->cylinders
;
1263 static void check_ioctl_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
1265 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
1266 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
1267 (void)check_for_unit_attention(h
, c
);
1270 static int cciss_getpciinfo(ctlr_info_t
*h
, void __user
*argp
)
1272 cciss_pci_info_struct pciinfo
;
1276 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
1277 pciinfo
.bus
= h
->pdev
->bus
->number
;
1278 pciinfo
.dev_fn
= h
->pdev
->devfn
;
1279 pciinfo
.board_id
= h
->board_id
;
1280 if (copy_to_user(argp
, &pciinfo
, sizeof(cciss_pci_info_struct
)))
1285 static int cciss_getintinfo(ctlr_info_t
*h
, void __user
*argp
)
1287 cciss_coalint_struct intinfo
;
1291 intinfo
.delay
= readl(&h
->cfgtable
->HostWrite
.CoalIntDelay
);
1292 intinfo
.count
= readl(&h
->cfgtable
->HostWrite
.CoalIntCount
);
1294 (argp
, &intinfo
, sizeof(cciss_coalint_struct
)))
1299 static int cciss_setintinfo(ctlr_info_t
*h
, void __user
*argp
)
1301 cciss_coalint_struct intinfo
;
1302 unsigned long flags
;
1307 if (!capable(CAP_SYS_ADMIN
))
1309 if (copy_from_user(&intinfo
, argp
, sizeof(intinfo
)))
1311 if ((intinfo
.delay
== 0) && (intinfo
.count
== 0))
1313 spin_lock_irqsave(&h
->lock
, flags
);
1314 /* Update the field, and then ring the doorbell */
1315 writel(intinfo
.delay
, &(h
->cfgtable
->HostWrite
.CoalIntDelay
));
1316 writel(intinfo
.count
, &(h
->cfgtable
->HostWrite
.CoalIntCount
));
1317 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1319 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1320 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1322 udelay(1000); /* delay and try again */
1324 spin_unlock_irqrestore(&h
->lock
, flags
);
1325 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1330 static int cciss_getnodename(ctlr_info_t
*h
, void __user
*argp
)
1332 NodeName_type NodeName
;
1337 for (i
= 0; i
< 16; i
++)
1338 NodeName
[i
] = readb(&h
->cfgtable
->ServerName
[i
]);
1339 if (copy_to_user(argp
, NodeName
, sizeof(NodeName_type
)))
1344 static int cciss_setnodename(ctlr_info_t
*h
, void __user
*argp
)
1346 NodeName_type NodeName
;
1347 unsigned long flags
;
1352 if (!capable(CAP_SYS_ADMIN
))
1354 if (copy_from_user(NodeName
, argp
, sizeof(NodeName_type
)))
1356 spin_lock_irqsave(&h
->lock
, flags
);
1357 /* Update the field, and then ring the doorbell */
1358 for (i
= 0; i
< 16; i
++)
1359 writeb(NodeName
[i
], &h
->cfgtable
->ServerName
[i
]);
1360 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1361 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1362 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1364 udelay(1000); /* delay and try again */
1366 spin_unlock_irqrestore(&h
->lock
, flags
);
1367 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1372 static int cciss_getheartbeat(ctlr_info_t
*h
, void __user
*argp
)
1374 Heartbeat_type heartbeat
;
1378 heartbeat
= readl(&h
->cfgtable
->HeartBeat
);
1379 if (copy_to_user(argp
, &heartbeat
, sizeof(Heartbeat_type
)))
1384 static int cciss_getbustypes(ctlr_info_t
*h
, void __user
*argp
)
1386 BusTypes_type BusTypes
;
1390 BusTypes
= readl(&h
->cfgtable
->BusTypes
);
1391 if (copy_to_user(argp
, &BusTypes
, sizeof(BusTypes_type
)))
1396 static int cciss_getfirmver(ctlr_info_t
*h
, void __user
*argp
)
1398 FirmwareVer_type firmware
;
1402 memcpy(firmware
, h
->firm_ver
, 4);
1405 (argp
, firmware
, sizeof(FirmwareVer_type
)))
1410 static int cciss_getdrivver(ctlr_info_t
*h
, void __user
*argp
)
1412 DriverVer_type DriverVer
= DRIVER_VERSION
;
1416 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
1421 static int cciss_getluninfo(ctlr_info_t
*h
,
1422 struct gendisk
*disk
, void __user
*argp
)
1424 LogvolInfo_struct luninfo
;
1425 drive_info_struct
*drv
= get_drv(disk
);
1429 memcpy(&luninfo
.LunID
, drv
->LunID
, sizeof(luninfo
.LunID
));
1430 luninfo
.num_opens
= drv
->usage_count
;
1431 luninfo
.num_parts
= 0;
1432 if (copy_to_user(argp
, &luninfo
, sizeof(LogvolInfo_struct
)))
1437 static int cciss_passthru(ctlr_info_t
*h
, void __user
*argp
)
1439 IOCTL_Command_struct iocommand
;
1440 CommandList_struct
*c
;
1443 DECLARE_COMPLETION_ONSTACK(wait
);
1448 if (!capable(CAP_SYS_RAWIO
))
1452 (&iocommand
, argp
, sizeof(IOCTL_Command_struct
)))
1454 if ((iocommand
.buf_size
< 1) &&
1455 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
1458 if (iocommand
.buf_size
> 0) {
1459 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
1463 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
1464 /* Copy the data into the buffer we created */
1465 if (copy_from_user(buff
, iocommand
.buf
, iocommand
.buf_size
)) {
1470 memset(buff
, 0, iocommand
.buf_size
);
1472 c
= cmd_special_alloc(h
);
1477 /* Fill in the command type */
1478 c
->cmd_type
= CMD_IOCTL_PEND
;
1479 /* Fill in Command Header */
1480 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
1481 if (iocommand
.buf_size
> 0) { /* buffer to fill */
1482 c
->Header
.SGList
= 1;
1483 c
->Header
.SGTotal
= 1;
1484 } else { /* no buffers to fill */
1485 c
->Header
.SGList
= 0;
1486 c
->Header
.SGTotal
= 0;
1488 c
->Header
.LUN
= iocommand
.LUN_info
;
1489 /* use the kernel address the cmd block for tag */
1490 c
->Header
.Tag
.lower
= c
->busaddr
;
1492 /* Fill in Request block */
1493 c
->Request
= iocommand
.Request
;
1495 /* Fill in the scatter gather information */
1496 if (iocommand
.buf_size
> 0) {
1497 temp64
.val
= pci_map_single(h
->pdev
, buff
,
1498 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
1499 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
1500 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
1501 c
->SG
[0].Len
= iocommand
.buf_size
;
1502 c
->SG
[0].Ext
= 0; /* we are not chaining */
1506 enqueue_cmd_and_start_io(h
, c
);
1507 wait_for_completion(&wait
);
1509 /* unlock the buffers from DMA */
1510 temp64
.val32
.lower
= c
->SG
[0].Addr
.lower
;
1511 temp64
.val32
.upper
= c
->SG
[0].Addr
.upper
;
1512 pci_unmap_single(h
->pdev
, (dma_addr_t
) temp64
.val
, iocommand
.buf_size
,
1513 PCI_DMA_BIDIRECTIONAL
);
1514 check_ioctl_unit_attention(h
, c
);
1516 /* Copy the error information out */
1517 iocommand
.error_info
= *(c
->err_info
);
1518 if (copy_to_user(argp
, &iocommand
, sizeof(IOCTL_Command_struct
))) {
1520 cmd_special_free(h
, c
);
1524 if (iocommand
.Request
.Type
.Direction
== XFER_READ
) {
1525 /* Copy the data out of the buffer we created */
1526 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
1528 cmd_special_free(h
, c
);
1533 cmd_special_free(h
, c
);
1537 static int cciss_bigpassthru(ctlr_info_t
*h
, void __user
*argp
)
1539 BIG_IOCTL_Command_struct
*ioc
;
1540 CommandList_struct
*c
;
1541 unsigned char **buff
= NULL
;
1542 int *buff_size
= NULL
;
1547 DECLARE_COMPLETION_ONSTACK(wait
);
1550 BYTE __user
*data_ptr
;
1554 if (!capable(CAP_SYS_RAWIO
))
1556 ioc
= kmalloc(sizeof(*ioc
), GFP_KERNEL
);
1561 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
1565 if ((ioc
->buf_size
< 1) &&
1566 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
1570 /* Check kmalloc limits using all SGs */
1571 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
1575 if (ioc
->buf_size
> ioc
->malloc_size
* MAXSGENTRIES
) {
1579 buff
= kzalloc(MAXSGENTRIES
* sizeof(char *), GFP_KERNEL
);
1584 buff_size
= kmalloc(MAXSGENTRIES
* sizeof(int), GFP_KERNEL
);
1589 left
= ioc
->buf_size
;
1590 data_ptr
= ioc
->buf
;
1592 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
1593 buff_size
[sg_used
] = sz
;
1594 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
1595 if (buff
[sg_used
] == NULL
) {
1599 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
1600 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
1605 memset(buff
[sg_used
], 0, sz
);
1611 c
= cmd_special_alloc(h
);
1616 c
->cmd_type
= CMD_IOCTL_PEND
;
1617 c
->Header
.ReplyQueue
= 0;
1618 c
->Header
.SGList
= sg_used
;
1619 c
->Header
.SGTotal
= sg_used
;
1620 c
->Header
.LUN
= ioc
->LUN_info
;
1621 c
->Header
.Tag
.lower
= c
->busaddr
;
1623 c
->Request
= ioc
->Request
;
1624 for (i
= 0; i
< sg_used
; i
++) {
1625 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
], buff_size
[i
],
1626 PCI_DMA_BIDIRECTIONAL
);
1627 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
1628 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
1629 c
->SG
[i
].Len
= buff_size
[i
];
1630 c
->SG
[i
].Ext
= 0; /* we are not chaining */
1633 enqueue_cmd_and_start_io(h
, c
);
1634 wait_for_completion(&wait
);
1635 /* unlock the buffers from DMA */
1636 for (i
= 0; i
< sg_used
; i
++) {
1637 temp64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1638 temp64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1639 pci_unmap_single(h
->pdev
,
1640 (dma_addr_t
) temp64
.val
, buff_size
[i
],
1641 PCI_DMA_BIDIRECTIONAL
);
1643 check_ioctl_unit_attention(h
, c
);
1644 /* Copy the error information out */
1645 ioc
->error_info
= *(c
->err_info
);
1646 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
1647 cmd_special_free(h
, c
);
1651 if (ioc
->Request
.Type
.Direction
== XFER_READ
) {
1652 /* Copy the data out of the buffer we created */
1653 BYTE __user
*ptr
= ioc
->buf
;
1654 for (i
= 0; i
< sg_used
; i
++) {
1655 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
1656 cmd_special_free(h
, c
);
1660 ptr
+= buff_size
[i
];
1663 cmd_special_free(h
, c
);
1667 for (i
= 0; i
< sg_used
; i
++)
1676 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
1677 unsigned int cmd
, unsigned long arg
)
1679 struct gendisk
*disk
= bdev
->bd_disk
;
1680 ctlr_info_t
*h
= get_host(disk
);
1681 void __user
*argp
= (void __user
*)arg
;
1683 dev_dbg(&h
->pdev
->dev
, "cciss_ioctl: Called with cmd=%x %lx\n",
1686 case CCISS_GETPCIINFO
:
1687 return cciss_getpciinfo(h
, argp
);
1688 case CCISS_GETINTINFO
:
1689 return cciss_getintinfo(h
, argp
);
1690 case CCISS_SETINTINFO
:
1691 return cciss_setintinfo(h
, argp
);
1692 case CCISS_GETNODENAME
:
1693 return cciss_getnodename(h
, argp
);
1694 case CCISS_SETNODENAME
:
1695 return cciss_setnodename(h
, argp
);
1696 case CCISS_GETHEARTBEAT
:
1697 return cciss_getheartbeat(h
, argp
);
1698 case CCISS_GETBUSTYPES
:
1699 return cciss_getbustypes(h
, argp
);
1700 case CCISS_GETFIRMVER
:
1701 return cciss_getfirmver(h
, argp
);
1702 case CCISS_GETDRIVVER
:
1703 return cciss_getdrivver(h
, argp
);
1704 case CCISS_DEREGDISK
:
1706 case CCISS_REVALIDVOLS
:
1707 return rebuild_lun_table(h
, 0, 1);
1708 case CCISS_GETLUNINFO
:
1709 return cciss_getluninfo(h
, disk
, argp
);
1710 case CCISS_PASSTHRU
:
1711 return cciss_passthru(h
, argp
);
1712 case CCISS_BIG_PASSTHRU
:
1713 return cciss_bigpassthru(h
, argp
);
1715 /* scsi_cmd_ioctl handles these, below, though some are not */
1716 /* very meaningful for cciss. SG_IO is the main one people want. */
1718 case SG_GET_VERSION_NUM
:
1719 case SG_SET_TIMEOUT
:
1720 case SG_GET_TIMEOUT
:
1721 case SG_GET_RESERVED_SIZE
:
1722 case SG_SET_RESERVED_SIZE
:
1723 case SG_EMULATED_HOST
:
1725 case SCSI_IOCTL_SEND_COMMAND
:
1726 return scsi_cmd_ioctl(disk
->queue
, disk
, mode
, cmd
, argp
);
1728 /* scsi_cmd_ioctl would normally handle these, below, but */
1729 /* they aren't a good fit for cciss, as CD-ROMs are */
1730 /* not supported, and we don't have any bus/target/lun */
1731 /* which we present to the kernel. */
1733 case CDROM_SEND_PACKET
:
1734 case CDROMCLOSETRAY
:
1736 case SCSI_IOCTL_GET_IDLUN
:
1737 case SCSI_IOCTL_GET_BUS_NUMBER
:
1743 static void cciss_check_queues(ctlr_info_t
*h
)
1745 int start_queue
= h
->next_to_run
;
1748 /* check to see if we have maxed out the number of commands that can
1749 * be placed on the queue. If so then exit. We do this check here
1750 * in case the interrupt we serviced was from an ioctl and did not
1751 * free any new commands.
1753 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
)
1756 /* We have room on the queue for more commands. Now we need to queue
1757 * them up. We will also keep track of the next queue to run so
1758 * that every queue gets a chance to be started first.
1760 for (i
= 0; i
< h
->highest_lun
+ 1; i
++) {
1761 int curr_queue
= (start_queue
+ i
) % (h
->highest_lun
+ 1);
1762 /* make sure the disk has been added and the drive is real
1763 * because this can be called from the middle of init_one.
1765 if (!h
->drv
[curr_queue
])
1767 if (!(h
->drv
[curr_queue
]->queue
) ||
1768 !(h
->drv
[curr_queue
]->heads
))
1770 blk_start_queue(h
->gendisk
[curr_queue
]->queue
);
1772 /* check to see if we have maxed out the number of commands
1773 * that can be placed on the queue.
1775 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
) {
1776 if (curr_queue
== start_queue
) {
1778 (start_queue
+ 1) % (h
->highest_lun
+ 1);
1781 h
->next_to_run
= curr_queue
;
1788 static void cciss_softirq_done(struct request
*rq
)
1790 CommandList_struct
*c
= rq
->completion_data
;
1791 ctlr_info_t
*h
= hba
[c
->ctlr
];
1792 SGDescriptor_struct
*curr_sg
= c
->SG
;
1794 unsigned long flags
;
1798 if (c
->Request
.Type
.Direction
== XFER_READ
)
1799 ddir
= PCI_DMA_FROMDEVICE
;
1801 ddir
= PCI_DMA_TODEVICE
;
1803 /* command did not need to be retried */
1804 /* unmap the DMA mapping for all the scatter gather elements */
1805 for (i
= 0; i
< c
->Header
.SGList
; i
++) {
1806 if (curr_sg
[sg_index
].Ext
== CCISS_SG_CHAIN
) {
1807 cciss_unmap_sg_chain_block(h
, c
);
1808 /* Point to the next block */
1809 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
1812 temp64
.val32
.lower
= curr_sg
[sg_index
].Addr
.lower
;
1813 temp64
.val32
.upper
= curr_sg
[sg_index
].Addr
.upper
;
1814 pci_unmap_page(h
->pdev
, temp64
.val
, curr_sg
[sg_index
].Len
,
1819 dev_dbg(&h
->pdev
->dev
, "Done with %p\n", rq
);
1821 /* set the residual count for pc requests */
1822 if (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
1823 rq
->resid_len
= c
->err_info
->ResidualCnt
;
1825 blk_end_request_all(rq
, (rq
->errors
== 0) ? 0 : -EIO
);
1827 spin_lock_irqsave(&h
->lock
, flags
);
1829 cciss_check_queues(h
);
1830 spin_unlock_irqrestore(&h
->lock
, flags
);
1833 static inline void log_unit_to_scsi3addr(ctlr_info_t
*h
,
1834 unsigned char scsi3addr
[], uint32_t log_unit
)
1836 memcpy(scsi3addr
, h
->drv
[log_unit
]->LunID
,
1837 sizeof(h
->drv
[log_unit
]->LunID
));
1840 /* This function gets the SCSI vendor, model, and revision of a logical drive
1841 * via the inquiry page 0. Model, vendor, and rev are set to empty strings if
1842 * they cannot be read.
1844 static void cciss_get_device_descr(ctlr_info_t
*h
, int logvol
,
1845 char *vendor
, char *model
, char *rev
)
1848 InquiryData_struct
*inq_buf
;
1849 unsigned char scsi3addr
[8];
1855 inq_buf
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1859 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1860 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buf
, sizeof(*inq_buf
), 0,
1861 scsi3addr
, TYPE_CMD
);
1863 memcpy(vendor
, &inq_buf
->data_byte
[8], VENDOR_LEN
);
1864 vendor
[VENDOR_LEN
] = '\0';
1865 memcpy(model
, &inq_buf
->data_byte
[16], MODEL_LEN
);
1866 model
[MODEL_LEN
] = '\0';
1867 memcpy(rev
, &inq_buf
->data_byte
[32], REV_LEN
);
1868 rev
[REV_LEN
] = '\0';
1875 /* This function gets the serial number of a logical drive via
1876 * inquiry page 0x83. Serial no. is 16 bytes. If the serial
1877 * number cannot be had, for whatever reason, 16 bytes of 0xff
1878 * are returned instead.
1880 static void cciss_get_serial_no(ctlr_info_t
*h
, int logvol
,
1881 unsigned char *serial_no
, int buflen
)
1883 #define PAGE_83_INQ_BYTES 64
1886 unsigned char scsi3addr
[8];
1890 memset(serial_no
, 0xff, buflen
);
1891 buf
= kzalloc(PAGE_83_INQ_BYTES
, GFP_KERNEL
);
1894 memset(serial_no
, 0, buflen
);
1895 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1896 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, buf
,
1897 PAGE_83_INQ_BYTES
, 0x83, scsi3addr
, TYPE_CMD
);
1899 memcpy(serial_no
, &buf
[8], buflen
);
1905 * cciss_add_disk sets up the block device queue for a logical drive
1907 static int cciss_add_disk(ctlr_info_t
*h
, struct gendisk
*disk
,
1910 disk
->queue
= blk_init_queue(do_cciss_request
, &h
->lock
);
1912 goto init_queue_failure
;
1913 sprintf(disk
->disk_name
, "cciss/c%dd%d", h
->ctlr
, drv_index
);
1914 disk
->major
= h
->major
;
1915 disk
->first_minor
= drv_index
<< NWD_SHIFT
;
1916 disk
->fops
= &cciss_fops
;
1917 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
1919 disk
->private_data
= h
->drv
[drv_index
];
1920 disk
->driverfs_dev
= &h
->drv
[drv_index
]->dev
;
1922 /* Set up queue information */
1923 blk_queue_bounce_limit(disk
->queue
, h
->pdev
->dma_mask
);
1925 /* This is a hardware imposed limit. */
1926 blk_queue_max_segments(disk
->queue
, h
->maxsgentries
);
1928 blk_queue_max_hw_sectors(disk
->queue
, h
->cciss_max_sectors
);
1930 blk_queue_softirq_done(disk
->queue
, cciss_softirq_done
);
1932 disk
->queue
->queuedata
= h
;
1934 blk_queue_logical_block_size(disk
->queue
,
1935 h
->drv
[drv_index
]->block_size
);
1937 /* Make sure all queue data is written out before */
1938 /* setting h->drv[drv_index]->queue, as setting this */
1939 /* allows the interrupt handler to start the queue */
1941 h
->drv
[drv_index
]->queue
= disk
->queue
;
1946 blk_cleanup_queue(disk
->queue
);
1952 /* This function will check the usage_count of the drive to be updated/added.
1953 * If the usage_count is zero and it is a heretofore unknown drive, or,
1954 * the drive's capacity, geometry, or serial number has changed,
1955 * then the drive information will be updated and the disk will be
1956 * re-registered with the kernel. If these conditions don't hold,
1957 * then it will be left alone for the next reboot. The exception to this
1958 * is disk 0 which will always be left registered with the kernel since it
1959 * is also the controller node. Any changes to disk 0 will show up on
1962 static void cciss_update_drive_info(ctlr_info_t
*h
, int drv_index
,
1963 int first_time
, int via_ioctl
)
1965 struct gendisk
*disk
;
1966 InquiryData_struct
*inq_buff
= NULL
;
1967 unsigned int block_size
;
1968 sector_t total_size
;
1969 unsigned long flags
= 0;
1971 drive_info_struct
*drvinfo
;
1973 /* Get information about the disk and modify the driver structure */
1974 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1975 drvinfo
= kzalloc(sizeof(*drvinfo
), GFP_KERNEL
);
1976 if (inq_buff
== NULL
|| drvinfo
== NULL
)
1979 /* testing to see if 16-byte CDBs are already being used */
1980 if (h
->cciss_read
== CCISS_READ_16
) {
1981 cciss_read_capacity_16(h
, drv_index
,
1982 &total_size
, &block_size
);
1985 cciss_read_capacity(h
, drv_index
, &total_size
, &block_size
);
1986 /* if read_capacity returns all F's this volume is >2TB */
1987 /* in size so we switch to 16-byte CDB's for all */
1988 /* read/write ops */
1989 if (total_size
== 0xFFFFFFFFULL
) {
1990 cciss_read_capacity_16(h
, drv_index
,
1991 &total_size
, &block_size
);
1992 h
->cciss_read
= CCISS_READ_16
;
1993 h
->cciss_write
= CCISS_WRITE_16
;
1995 h
->cciss_read
= CCISS_READ_10
;
1996 h
->cciss_write
= CCISS_WRITE_10
;
2000 cciss_geometry_inquiry(h
, drv_index
, total_size
, block_size
,
2002 drvinfo
->block_size
= block_size
;
2003 drvinfo
->nr_blocks
= total_size
+ 1;
2005 cciss_get_device_descr(h
, drv_index
, drvinfo
->vendor
,
2006 drvinfo
->model
, drvinfo
->rev
);
2007 cciss_get_serial_no(h
, drv_index
, drvinfo
->serial_no
,
2008 sizeof(drvinfo
->serial_no
));
2009 /* Save the lunid in case we deregister the disk, below. */
2010 memcpy(drvinfo
->LunID
, h
->drv
[drv_index
]->LunID
,
2011 sizeof(drvinfo
->LunID
));
2013 /* Is it the same disk we already know, and nothing's changed? */
2014 if (h
->drv
[drv_index
]->raid_level
!= -1 &&
2015 ((memcmp(drvinfo
->serial_no
,
2016 h
->drv
[drv_index
]->serial_no
, 16) == 0) &&
2017 drvinfo
->block_size
== h
->drv
[drv_index
]->block_size
&&
2018 drvinfo
->nr_blocks
== h
->drv
[drv_index
]->nr_blocks
&&
2019 drvinfo
->heads
== h
->drv
[drv_index
]->heads
&&
2020 drvinfo
->sectors
== h
->drv
[drv_index
]->sectors
&&
2021 drvinfo
->cylinders
== h
->drv
[drv_index
]->cylinders
))
2022 /* The disk is unchanged, nothing to update */
2025 /* If we get here it's not the same disk, or something's changed,
2026 * so we need to * deregister it, and re-register it, if it's not
2028 * If the disk already exists then deregister it before proceeding
2029 * (unless it's the first disk (for the controller node).
2031 if (h
->drv
[drv_index
]->raid_level
!= -1 && drv_index
!= 0) {
2032 dev_warn(&h
->pdev
->dev
, "disk %d has changed.\n", drv_index
);
2033 spin_lock_irqsave(&h
->lock
, flags
);
2034 h
->drv
[drv_index
]->busy_configuring
= 1;
2035 spin_unlock_irqrestore(&h
->lock
, flags
);
2037 /* deregister_disk sets h->drv[drv_index]->queue = NULL
2038 * which keeps the interrupt handler from starting
2041 ret
= deregister_disk(h
, drv_index
, 0, via_ioctl
);
2044 /* If the disk is in use return */
2048 /* Save the new information from cciss_geometry_inquiry
2049 * and serial number inquiry. If the disk was deregistered
2050 * above, then h->drv[drv_index] will be NULL.
2052 if (h
->drv
[drv_index
] == NULL
) {
2053 drvinfo
->device_initialized
= 0;
2054 h
->drv
[drv_index
] = drvinfo
;
2055 drvinfo
= NULL
; /* so it won't be freed below. */
2057 /* special case for cxd0 */
2058 h
->drv
[drv_index
]->block_size
= drvinfo
->block_size
;
2059 h
->drv
[drv_index
]->nr_blocks
= drvinfo
->nr_blocks
;
2060 h
->drv
[drv_index
]->heads
= drvinfo
->heads
;
2061 h
->drv
[drv_index
]->sectors
= drvinfo
->sectors
;
2062 h
->drv
[drv_index
]->cylinders
= drvinfo
->cylinders
;
2063 h
->drv
[drv_index
]->raid_level
= drvinfo
->raid_level
;
2064 memcpy(h
->drv
[drv_index
]->serial_no
, drvinfo
->serial_no
, 16);
2065 memcpy(h
->drv
[drv_index
]->vendor
, drvinfo
->vendor
,
2067 memcpy(h
->drv
[drv_index
]->model
, drvinfo
->model
, MODEL_LEN
+ 1);
2068 memcpy(h
->drv
[drv_index
]->rev
, drvinfo
->rev
, REV_LEN
+ 1);
2072 disk
= h
->gendisk
[drv_index
];
2073 set_capacity(disk
, h
->drv
[drv_index
]->nr_blocks
);
2075 /* If it's not disk 0 (drv_index != 0)
2076 * or if it was disk 0, but there was previously
2077 * no actual corresponding configured logical drive
2078 * (raid_leve == -1) then we want to update the
2079 * logical drive's information.
2081 if (drv_index
|| first_time
) {
2082 if (cciss_add_disk(h
, disk
, drv_index
) != 0) {
2083 cciss_free_gendisk(h
, drv_index
);
2084 cciss_free_drive_info(h
, drv_index
);
2085 dev_warn(&h
->pdev
->dev
, "could not update disk %d\n",
2096 dev_err(&h
->pdev
->dev
, "out of memory\n");
2100 /* This function will find the first index of the controllers drive array
2101 * that has a null drv pointer and allocate the drive info struct and
2102 * will return that index This is where new drives will be added.
2103 * If the index to be returned is greater than the highest_lun index for
2104 * the controller then highest_lun is set * to this new index.
2105 * If there are no available indexes or if tha allocation fails, then -1
2106 * is returned. * "controller_node" is used to know if this is a real
2107 * logical drive, or just the controller node, which determines if this
2108 * counts towards highest_lun.
2110 static int cciss_alloc_drive_info(ctlr_info_t
*h
, int controller_node
)
2113 drive_info_struct
*drv
;
2115 /* Search for an empty slot for our drive info */
2116 for (i
= 0; i
< CISS_MAX_LUN
; i
++) {
2118 /* if not cxd0 case, and it's occupied, skip it. */
2119 if (h
->drv
[i
] && i
!= 0)
2122 * If it's cxd0 case, and drv is alloc'ed already, and a
2123 * disk is configured there, skip it.
2125 if (i
== 0 && h
->drv
[i
] && h
->drv
[i
]->raid_level
!= -1)
2129 * We've found an empty slot. Update highest_lun
2130 * provided this isn't just the fake cxd0 controller node.
2132 if (i
> h
->highest_lun
&& !controller_node
)
2135 /* If adding a real disk at cxd0, and it's already alloc'ed */
2136 if (i
== 0 && h
->drv
[i
] != NULL
)
2140 * Found an empty slot, not already alloc'ed. Allocate it.
2141 * Mark it with raid_level == -1, so we know it's new later on.
2143 drv
= kzalloc(sizeof(*drv
), GFP_KERNEL
);
2146 drv
->raid_level
= -1; /* so we know it's new */
2153 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
)
2155 kfree(h
->drv
[drv_index
]);
2156 h
->drv
[drv_index
] = NULL
;
2159 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
)
2161 put_disk(h
->gendisk
[drv_index
]);
2162 h
->gendisk
[drv_index
] = NULL
;
2165 /* cciss_add_gendisk finds a free hba[]->drv structure
2166 * and allocates a gendisk if needed, and sets the lunid
2167 * in the drvinfo structure. It returns the index into
2168 * the ->drv[] array, or -1 if none are free.
2169 * is_controller_node indicates whether highest_lun should
2170 * count this disk, or if it's only being added to provide
2171 * a means to talk to the controller in case no logical
2172 * drives have yet been configured.
2174 static int cciss_add_gendisk(ctlr_info_t
*h
, unsigned char lunid
[],
2175 int controller_node
)
2179 drv_index
= cciss_alloc_drive_info(h
, controller_node
);
2180 if (drv_index
== -1)
2183 /*Check if the gendisk needs to be allocated */
2184 if (!h
->gendisk
[drv_index
]) {
2185 h
->gendisk
[drv_index
] =
2186 alloc_disk(1 << NWD_SHIFT
);
2187 if (!h
->gendisk
[drv_index
]) {
2188 dev_err(&h
->pdev
->dev
,
2189 "could not allocate a new disk %d\n",
2191 goto err_free_drive_info
;
2194 memcpy(h
->drv
[drv_index
]->LunID
, lunid
,
2195 sizeof(h
->drv
[drv_index
]->LunID
));
2196 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
2198 /* Don't need to mark this busy because nobody */
2199 /* else knows about this disk yet to contend */
2200 /* for access to it. */
2201 h
->drv
[drv_index
]->busy_configuring
= 0;
2206 cciss_free_gendisk(h
, drv_index
);
2207 err_free_drive_info
:
2208 cciss_free_drive_info(h
, drv_index
);
2212 /* This is for the special case of a controller which
2213 * has no logical drives. In this case, we still need
2214 * to register a disk so the controller can be accessed
2215 * by the Array Config Utility.
2217 static void cciss_add_controller_node(ctlr_info_t
*h
)
2219 struct gendisk
*disk
;
2222 if (h
->gendisk
[0] != NULL
) /* already did this? Then bail. */
2225 drv_index
= cciss_add_gendisk(h
, CTLR_LUNID
, 1);
2226 if (drv_index
== -1)
2228 h
->drv
[drv_index
]->block_size
= 512;
2229 h
->drv
[drv_index
]->nr_blocks
= 0;
2230 h
->drv
[drv_index
]->heads
= 0;
2231 h
->drv
[drv_index
]->sectors
= 0;
2232 h
->drv
[drv_index
]->cylinders
= 0;
2233 h
->drv
[drv_index
]->raid_level
= -1;
2234 memset(h
->drv
[drv_index
]->serial_no
, 0, 16);
2235 disk
= h
->gendisk
[drv_index
];
2236 if (cciss_add_disk(h
, disk
, drv_index
) == 0)
2238 cciss_free_gendisk(h
, drv_index
);
2239 cciss_free_drive_info(h
, drv_index
);
2241 dev_warn(&h
->pdev
->dev
, "could not add disk 0.\n");
2245 /* This function will add and remove logical drives from the Logical
2246 * drive array of the controller and maintain persistency of ordering
2247 * so that mount points are preserved until the next reboot. This allows
2248 * for the removal of logical drives in the middle of the drive array
2249 * without a re-ordering of those drives.
2251 * h = The controller to perform the operations on
2253 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
,
2257 ReportLunData_struct
*ld_buff
= NULL
;
2263 unsigned char lunid
[8] = CTLR_LUNID
;
2264 unsigned long flags
;
2266 if (!capable(CAP_SYS_RAWIO
))
2269 /* Set busy_configuring flag for this operation */
2270 spin_lock_irqsave(&h
->lock
, flags
);
2271 if (h
->busy_configuring
) {
2272 spin_unlock_irqrestore(&h
->lock
, flags
);
2275 h
->busy_configuring
= 1;
2276 spin_unlock_irqrestore(&h
->lock
, flags
);
2278 ld_buff
= kzalloc(sizeof(ReportLunData_struct
), GFP_KERNEL
);
2279 if (ld_buff
== NULL
)
2282 return_code
= sendcmd_withirq(h
, CISS_REPORT_LOG
, ld_buff
,
2283 sizeof(ReportLunData_struct
),
2284 0, CTLR_LUNID
, TYPE_CMD
);
2286 if (return_code
== IO_OK
)
2287 listlength
= be32_to_cpu(*(__be32
*) ld_buff
->LUNListLength
);
2288 else { /* reading number of logical volumes failed */
2289 dev_warn(&h
->pdev
->dev
,
2290 "report logical volume command failed\n");
2295 num_luns
= listlength
/ 8; /* 8 bytes per entry */
2296 if (num_luns
> CISS_MAX_LUN
) {
2297 num_luns
= CISS_MAX_LUN
;
2298 dev_warn(&h
->pdev
->dev
, "more luns configured"
2299 " on controller than can be handled by"
2304 cciss_add_controller_node(h
);
2306 /* Compare controller drive array to driver's drive array
2307 * to see if any drives are missing on the controller due
2308 * to action of Array Config Utility (user deletes drive)
2309 * and deregister logical drives which have disappeared.
2311 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2315 /* skip holes in the array from already deleted drives */
2316 if (h
->drv
[i
] == NULL
)
2319 for (j
= 0; j
< num_luns
; j
++) {
2320 memcpy(lunid
, &ld_buff
->LUN
[j
][0], sizeof(lunid
));
2321 if (memcmp(h
->drv
[i
]->LunID
, lunid
,
2322 sizeof(lunid
)) == 0) {
2328 /* Deregister it from the OS, it's gone. */
2329 spin_lock_irqsave(&h
->lock
, flags
);
2330 h
->drv
[i
]->busy_configuring
= 1;
2331 spin_unlock_irqrestore(&h
->lock
, flags
);
2332 return_code
= deregister_disk(h
, i
, 1, via_ioctl
);
2333 if (h
->drv
[i
] != NULL
)
2334 h
->drv
[i
]->busy_configuring
= 0;
2338 /* Compare controller drive array to driver's drive array.
2339 * Check for updates in the drive information and any new drives
2340 * on the controller due to ACU adding logical drives, or changing
2341 * a logical drive's size, etc. Reregister any new/changed drives
2343 for (i
= 0; i
< num_luns
; i
++) {
2348 memcpy(lunid
, &ld_buff
->LUN
[i
][0], sizeof(lunid
));
2349 /* Find if the LUN is already in the drive array
2350 * of the driver. If so then update its info
2351 * if not in use. If it does not exist then find
2352 * the first free index and add it.
2354 for (j
= 0; j
<= h
->highest_lun
; j
++) {
2355 if (h
->drv
[j
] != NULL
&&
2356 memcmp(h
->drv
[j
]->LunID
, lunid
,
2357 sizeof(h
->drv
[j
]->LunID
)) == 0) {
2364 /* check if the drive was found already in the array */
2366 drv_index
= cciss_add_gendisk(h
, lunid
, 0);
2367 if (drv_index
== -1)
2370 cciss_update_drive_info(h
, drv_index
, first_time
, via_ioctl
);
2375 h
->busy_configuring
= 0;
2376 /* We return -1 here to tell the ACU that we have registered/updated
2377 * all of the drives that we can and to keep it from calling us
2382 dev_err(&h
->pdev
->dev
, "out of memory\n");
2383 h
->busy_configuring
= 0;
2387 static void cciss_clear_drive_info(drive_info_struct
*drive_info
)
2389 /* zero out the disk size info */
2390 drive_info
->nr_blocks
= 0;
2391 drive_info
->block_size
= 0;
2392 drive_info
->heads
= 0;
2393 drive_info
->sectors
= 0;
2394 drive_info
->cylinders
= 0;
2395 drive_info
->raid_level
= -1;
2396 memset(drive_info
->serial_no
, 0, sizeof(drive_info
->serial_no
));
2397 memset(drive_info
->model
, 0, sizeof(drive_info
->model
));
2398 memset(drive_info
->rev
, 0, sizeof(drive_info
->rev
));
2399 memset(drive_info
->vendor
, 0, sizeof(drive_info
->vendor
));
2401 * don't clear the LUNID though, we need to remember which
2406 /* This function will deregister the disk and it's queue from the
2407 * kernel. It must be called with the controller lock held and the
2408 * drv structures busy_configuring flag set. It's parameters are:
2410 * disk = This is the disk to be deregistered
2411 * drv = This is the drive_info_struct associated with the disk to be
2412 * deregistered. It contains information about the disk used
2414 * clear_all = This flag determines whether or not the disk information
2415 * is going to be completely cleared out and the highest_lun
2416 * reset. Sometimes we want to clear out information about
2417 * the disk in preparation for re-adding it. In this case
2418 * the highest_lun should be left unchanged and the LunID
2419 * should not be cleared.
2421 * This indicates whether we've reached this path via ioctl.
2422 * This affects the maximum usage count allowed for c0d0 to be messed with.
2423 * If this path is reached via ioctl(), then the max_usage_count will
2424 * be 1, as the process calling ioctl() has got to have the device open.
2425 * If we get here via sysfs, then the max usage count will be zero.
2427 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
2428 int clear_all
, int via_ioctl
)
2431 struct gendisk
*disk
;
2432 drive_info_struct
*drv
;
2433 int recalculate_highest_lun
;
2435 if (!capable(CAP_SYS_RAWIO
))
2438 drv
= h
->drv
[drv_index
];
2439 disk
= h
->gendisk
[drv_index
];
2441 /* make sure logical volume is NOT is use */
2442 if (clear_all
|| (h
->gendisk
[0] == disk
)) {
2443 if (drv
->usage_count
> via_ioctl
)
2445 } else if (drv
->usage_count
> 0)
2448 recalculate_highest_lun
= (drv
== h
->drv
[h
->highest_lun
]);
2450 /* invalidate the devices and deregister the disk. If it is disk
2451 * zero do not deregister it but just zero out it's values. This
2452 * allows us to delete disk zero but keep the controller registered.
2454 if (h
->gendisk
[0] != disk
) {
2455 struct request_queue
*q
= disk
->queue
;
2456 if (disk
->flags
& GENHD_FL_UP
) {
2457 cciss_destroy_ld_sysfs_entry(h
, drv_index
, 0);
2461 blk_cleanup_queue(q
);
2462 /* If clear_all is set then we are deleting the logical
2463 * drive, not just refreshing its info. For drives
2464 * other than disk 0 we will call put_disk. We do not
2465 * do this for disk 0 as we need it to be able to
2466 * configure the controller.
2469 /* This isn't pretty, but we need to find the
2470 * disk in our array and NULL our the pointer.
2471 * This is so that we will call alloc_disk if
2472 * this index is used again later.
2474 for (i
=0; i
< CISS_MAX_LUN
; i
++){
2475 if (h
->gendisk
[i
] == disk
) {
2476 h
->gendisk
[i
] = NULL
;
2483 set_capacity(disk
, 0);
2484 cciss_clear_drive_info(drv
);
2489 /* if it was the last disk, find the new hightest lun */
2490 if (clear_all
&& recalculate_highest_lun
) {
2491 int newhighest
= -1;
2492 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2493 /* if the disk has size > 0, it is available */
2494 if (h
->drv
[i
] && h
->drv
[i
]->heads
)
2497 h
->highest_lun
= newhighest
;
2502 static int __devinit
cciss_send_reset(ctlr_info_t
*h
, unsigned char *scsi3addr
,
2505 CommandList_struct
*c
;
2511 return_status
= fill_cmd(h
, c
, CCISS_RESET_MSG
, NULL
, 0, 0,
2512 CTLR_LUNID
, TYPE_MSG
);
2513 c
->Request
.CDB
[1] = reset_type
; /* fill_cmd defaults to target reset */
2514 if (return_status
!= IO_OK
) {
2515 cmd_special_free(h
, c
);
2516 return return_status
;
2519 enqueue_cmd_and_start_io(h
, c
);
2520 /* Don't wait for completion, the reset won't complete. Don't free
2521 * the command either. This is the last command we will send before
2522 * re-initializing everything, so it doesn't matter and won't leak.
2527 static int fill_cmd(ctlr_info_t
*h
, CommandList_struct
*c
, __u8 cmd
, void *buff
,
2528 size_t size
, __u8 page_code
, unsigned char *scsi3addr
,
2531 u64bit buff_dma_handle
;
2534 c
->cmd_type
= CMD_IOCTL_PEND
;
2535 c
->Header
.ReplyQueue
= 0;
2537 c
->Header
.SGList
= 1;
2538 c
->Header
.SGTotal
= 1;
2540 c
->Header
.SGList
= 0;
2541 c
->Header
.SGTotal
= 0;
2543 c
->Header
.Tag
.lower
= c
->busaddr
;
2544 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2546 c
->Request
.Type
.Type
= cmd_type
;
2547 if (cmd_type
== TYPE_CMD
) {
2550 /* are we trying to read a vital product page */
2551 if (page_code
!= 0) {
2552 c
->Request
.CDB
[1] = 0x01;
2553 c
->Request
.CDB
[2] = page_code
;
2555 c
->Request
.CDBLen
= 6;
2556 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2557 c
->Request
.Type
.Direction
= XFER_READ
;
2558 c
->Request
.Timeout
= 0;
2559 c
->Request
.CDB
[0] = CISS_INQUIRY
;
2560 c
->Request
.CDB
[4] = size
& 0xFF;
2562 case CISS_REPORT_LOG
:
2563 case CISS_REPORT_PHYS
:
2564 /* Talking to controller so It's a physical command
2565 mode = 00 target = 0. Nothing to write.
2567 c
->Request
.CDBLen
= 12;
2568 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2569 c
->Request
.Type
.Direction
= XFER_READ
;
2570 c
->Request
.Timeout
= 0;
2571 c
->Request
.CDB
[0] = cmd
;
2572 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2573 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2574 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2575 c
->Request
.CDB
[9] = size
& 0xFF;
2578 case CCISS_READ_CAPACITY
:
2579 c
->Request
.CDBLen
= 10;
2580 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2581 c
->Request
.Type
.Direction
= XFER_READ
;
2582 c
->Request
.Timeout
= 0;
2583 c
->Request
.CDB
[0] = cmd
;
2585 case CCISS_READ_CAPACITY_16
:
2586 c
->Request
.CDBLen
= 16;
2587 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2588 c
->Request
.Type
.Direction
= XFER_READ
;
2589 c
->Request
.Timeout
= 0;
2590 c
->Request
.CDB
[0] = cmd
;
2591 c
->Request
.CDB
[1] = 0x10;
2592 c
->Request
.CDB
[10] = (size
>> 24) & 0xFF;
2593 c
->Request
.CDB
[11] = (size
>> 16) & 0xFF;
2594 c
->Request
.CDB
[12] = (size
>> 8) & 0xFF;
2595 c
->Request
.CDB
[13] = size
& 0xFF;
2596 c
->Request
.Timeout
= 0;
2597 c
->Request
.CDB
[0] = cmd
;
2599 case CCISS_CACHE_FLUSH
:
2600 c
->Request
.CDBLen
= 12;
2601 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2602 c
->Request
.Type
.Direction
= XFER_WRITE
;
2603 c
->Request
.Timeout
= 0;
2604 c
->Request
.CDB
[0] = BMIC_WRITE
;
2605 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2607 case TEST_UNIT_READY
:
2608 c
->Request
.CDBLen
= 6;
2609 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2610 c
->Request
.Type
.Direction
= XFER_NONE
;
2611 c
->Request
.Timeout
= 0;
2614 dev_warn(&h
->pdev
->dev
, "Unknown Command 0x%c\n", cmd
);
2617 } else if (cmd_type
== TYPE_MSG
) {
2619 case CCISS_ABORT_MSG
:
2620 c
->Request
.CDBLen
= 12;
2621 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2622 c
->Request
.Type
.Direction
= XFER_WRITE
;
2623 c
->Request
.Timeout
= 0;
2624 c
->Request
.CDB
[0] = cmd
; /* abort */
2625 c
->Request
.CDB
[1] = 0; /* abort a command */
2626 /* buff contains the tag of the command to abort */
2627 memcpy(&c
->Request
.CDB
[4], buff
, 8);
2629 case CCISS_RESET_MSG
:
2630 c
->Request
.CDBLen
= 16;
2631 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2632 c
->Request
.Type
.Direction
= XFER_NONE
;
2633 c
->Request
.Timeout
= 0;
2634 memset(&c
->Request
.CDB
[0], 0, sizeof(c
->Request
.CDB
));
2635 c
->Request
.CDB
[0] = cmd
; /* reset */
2636 c
->Request
.CDB
[1] = CCISS_RESET_TYPE_TARGET
;
2638 case CCISS_NOOP_MSG
:
2639 c
->Request
.CDBLen
= 1;
2640 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2641 c
->Request
.Type
.Direction
= XFER_WRITE
;
2642 c
->Request
.Timeout
= 0;
2643 c
->Request
.CDB
[0] = cmd
;
2646 dev_warn(&h
->pdev
->dev
,
2647 "unknown message type %d\n", cmd
);
2651 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2654 /* Fill in the scatter gather information */
2656 buff_dma_handle
.val
= (__u64
) pci_map_single(h
->pdev
,
2658 PCI_DMA_BIDIRECTIONAL
);
2659 c
->SG
[0].Addr
.lower
= buff_dma_handle
.val32
.lower
;
2660 c
->SG
[0].Addr
.upper
= buff_dma_handle
.val32
.upper
;
2661 c
->SG
[0].Len
= size
;
2662 c
->SG
[0].Ext
= 0; /* we are not chaining */
2667 static int check_target_status(ctlr_info_t
*h
, CommandList_struct
*c
)
2669 switch (c
->err_info
->ScsiStatus
) {
2672 case SAM_STAT_CHECK_CONDITION
:
2673 switch (0xf & c
->err_info
->SenseInfo
[2]) {
2674 case 0: return IO_OK
; /* no sense */
2675 case 1: return IO_OK
; /* recovered error */
2677 if (check_for_unit_attention(h
, c
))
2678 return IO_NEEDS_RETRY
;
2679 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x "
2680 "check condition, sense key = 0x%02x\n",
2681 c
->Request
.CDB
[0], c
->err_info
->SenseInfo
[2]);
2685 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x"
2686 "scsi status = 0x%02x\n",
2687 c
->Request
.CDB
[0], c
->err_info
->ScsiStatus
);
2693 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
)
2695 int return_status
= IO_OK
;
2697 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2700 switch (c
->err_info
->CommandStatus
) {
2701 case CMD_TARGET_STATUS
:
2702 return_status
= check_target_status(h
, c
);
2704 case CMD_DATA_UNDERRUN
:
2705 case CMD_DATA_OVERRUN
:
2706 /* expected for inquiry and report lun commands */
2709 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x is "
2710 "reported invalid\n", c
->Request
.CDB
[0]);
2711 return_status
= IO_ERROR
;
2713 case CMD_PROTOCOL_ERR
:
2714 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x has "
2715 "protocol error\n", c
->Request
.CDB
[0]);
2716 return_status
= IO_ERROR
;
2718 case CMD_HARDWARE_ERR
:
2719 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2720 " hardware error\n", c
->Request
.CDB
[0]);
2721 return_status
= IO_ERROR
;
2723 case CMD_CONNECTION_LOST
:
2724 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2725 "connection lost\n", c
->Request
.CDB
[0]);
2726 return_status
= IO_ERROR
;
2729 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x was "
2730 "aborted\n", c
->Request
.CDB
[0]);
2731 return_status
= IO_ERROR
;
2733 case CMD_ABORT_FAILED
:
2734 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x reports "
2735 "abort failed\n", c
->Request
.CDB
[0]);
2736 return_status
= IO_ERROR
;
2738 case CMD_UNSOLICITED_ABORT
:
2739 dev_warn(&h
->pdev
->dev
, "unsolicited abort 0x%02x\n",
2741 return_status
= IO_NEEDS_RETRY
;
2743 case CMD_UNABORTABLE
:
2744 dev_warn(&h
->pdev
->dev
, "cmd unabortable\n");
2745 return_status
= IO_ERROR
;
2748 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x returned "
2749 "unknown status %x\n", c
->Request
.CDB
[0],
2750 c
->err_info
->CommandStatus
);
2751 return_status
= IO_ERROR
;
2753 return return_status
;
2756 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
2759 DECLARE_COMPLETION_ONSTACK(wait
);
2760 u64bit buff_dma_handle
;
2761 int return_status
= IO_OK
;
2765 enqueue_cmd_and_start_io(h
, c
);
2767 wait_for_completion(&wait
);
2769 if (c
->err_info
->CommandStatus
== 0 || !attempt_retry
)
2772 return_status
= process_sendcmd_error(h
, c
);
2774 if (return_status
== IO_NEEDS_RETRY
&&
2775 c
->retry_count
< MAX_CMD_RETRIES
) {
2776 dev_warn(&h
->pdev
->dev
, "retrying 0x%02x\n",
2779 /* erase the old error information */
2780 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
2781 return_status
= IO_OK
;
2782 INIT_COMPLETION(wait
);
2787 /* unlock the buffers from DMA */
2788 buff_dma_handle
.val32
.lower
= c
->SG
[0].Addr
.lower
;
2789 buff_dma_handle
.val32
.upper
= c
->SG
[0].Addr
.upper
;
2790 pci_unmap_single(h
->pdev
, (dma_addr_t
) buff_dma_handle
.val
,
2791 c
->SG
[0].Len
, PCI_DMA_BIDIRECTIONAL
);
2792 return return_status
;
2795 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
2796 __u8 page_code
, unsigned char scsi3addr
[],
2799 CommandList_struct
*c
;
2802 c
= cmd_special_alloc(h
);
2805 return_status
= fill_cmd(h
, c
, cmd
, buff
, size
, page_code
,
2806 scsi3addr
, cmd_type
);
2807 if (return_status
== IO_OK
)
2808 return_status
= sendcmd_withirq_core(h
, c
, 1);
2810 cmd_special_free(h
, c
);
2811 return return_status
;
2814 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
2815 sector_t total_size
,
2816 unsigned int block_size
,
2817 InquiryData_struct
*inq_buff
,
2818 drive_info_struct
*drv
)
2822 unsigned char scsi3addr
[8];
2824 memset(inq_buff
, 0, sizeof(InquiryData_struct
));
2825 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2826 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
2827 sizeof(*inq_buff
), 0xC1, scsi3addr
, TYPE_CMD
);
2828 if (return_code
== IO_OK
) {
2829 if (inq_buff
->data_byte
[8] == 0xFF) {
2830 dev_warn(&h
->pdev
->dev
,
2831 "reading geometry failed, volume "
2832 "does not support reading geometry\n");
2834 drv
->sectors
= 32; /* Sectors per track */
2835 drv
->cylinders
= total_size
+ 1;
2836 drv
->raid_level
= RAID_UNKNOWN
;
2838 drv
->heads
= inq_buff
->data_byte
[6];
2839 drv
->sectors
= inq_buff
->data_byte
[7];
2840 drv
->cylinders
= (inq_buff
->data_byte
[4] & 0xff) << 8;
2841 drv
->cylinders
+= inq_buff
->data_byte
[5];
2842 drv
->raid_level
= inq_buff
->data_byte
[8];
2844 drv
->block_size
= block_size
;
2845 drv
->nr_blocks
= total_size
+ 1;
2846 t
= drv
->heads
* drv
->sectors
;
2848 sector_t real_size
= total_size
+ 1;
2849 unsigned long rem
= sector_div(real_size
, t
);
2852 drv
->cylinders
= real_size
;
2854 } else { /* Get geometry failed */
2855 dev_warn(&h
->pdev
->dev
, "reading geometry failed\n");
2860 cciss_read_capacity(ctlr_info_t
*h
, int logvol
, sector_t
*total_size
,
2861 unsigned int *block_size
)
2863 ReadCapdata_struct
*buf
;
2865 unsigned char scsi3addr
[8];
2867 buf
= kzalloc(sizeof(ReadCapdata_struct
), GFP_KERNEL
);
2869 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2873 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2874 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY
, buf
,
2875 sizeof(ReadCapdata_struct
), 0, scsi3addr
, TYPE_CMD
);
2876 if (return_code
== IO_OK
) {
2877 *total_size
= be32_to_cpu(*(__be32
*) buf
->total_size
);
2878 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2879 } else { /* read capacity command failed */
2880 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2882 *block_size
= BLOCK_SIZE
;
2887 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
2888 sector_t
*total_size
, unsigned int *block_size
)
2890 ReadCapdata_struct_16
*buf
;
2892 unsigned char scsi3addr
[8];
2894 buf
= kzalloc(sizeof(ReadCapdata_struct_16
), GFP_KERNEL
);
2896 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2900 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2901 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY_16
,
2902 buf
, sizeof(ReadCapdata_struct_16
),
2903 0, scsi3addr
, TYPE_CMD
);
2904 if (return_code
== IO_OK
) {
2905 *total_size
= be64_to_cpu(*(__be64
*) buf
->total_size
);
2906 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2907 } else { /* read capacity command failed */
2908 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2910 *block_size
= BLOCK_SIZE
;
2912 dev_info(&h
->pdev
->dev
, " blocks= %llu block_size= %d\n",
2913 (unsigned long long)*total_size
+1, *block_size
);
2917 static int cciss_revalidate(struct gendisk
*disk
)
2919 ctlr_info_t
*h
= get_host(disk
);
2920 drive_info_struct
*drv
= get_drv(disk
);
2923 unsigned int block_size
;
2924 sector_t total_size
;
2925 InquiryData_struct
*inq_buff
= NULL
;
2927 for (logvol
= 0; logvol
<= h
->highest_lun
; logvol
++) {
2928 if (!h
->drv
[logvol
])
2930 if (memcmp(h
->drv
[logvol
]->LunID
, drv
->LunID
,
2931 sizeof(drv
->LunID
)) == 0) {
2940 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
2941 if (inq_buff
== NULL
) {
2942 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2945 if (h
->cciss_read
== CCISS_READ_10
) {
2946 cciss_read_capacity(h
, logvol
,
2947 &total_size
, &block_size
);
2949 cciss_read_capacity_16(h
, logvol
,
2950 &total_size
, &block_size
);
2952 cciss_geometry_inquiry(h
, logvol
, total_size
, block_size
,
2955 blk_queue_logical_block_size(drv
->queue
, drv
->block_size
);
2956 set_capacity(disk
, drv
->nr_blocks
);
2963 * Map (physical) PCI mem into (virtual) kernel space
2965 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
2967 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
2968 ulong page_offs
= ((ulong
) base
) - page_base
;
2969 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
2971 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
2975 * Takes jobs of the Q and sends them to the hardware, then puts it on
2976 * the Q to wait for completion.
2978 static void start_io(ctlr_info_t
*h
)
2980 CommandList_struct
*c
;
2982 while (!list_empty(&h
->reqQ
)) {
2983 c
= list_entry(h
->reqQ
.next
, CommandList_struct
, list
);
2984 /* can't do anything if fifo is full */
2985 if ((h
->access
.fifo_full(h
))) {
2986 dev_warn(&h
->pdev
->dev
, "fifo full\n");
2990 /* Get the first entry from the Request Q */
2994 /* Tell the controller execute command */
2995 h
->access
.submit_command(h
, c
);
2997 /* Put job onto the completed Q */
3002 /* Assumes that h->lock is held. */
3003 /* Zeros out the error record and then resends the command back */
3004 /* to the controller */
3005 static inline void resend_cciss_cmd(ctlr_info_t
*h
, CommandList_struct
*c
)
3007 /* erase the old error information */
3008 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
3010 /* add it to software queue and then send it to the controller */
3013 if (h
->Qdepth
> h
->maxQsinceinit
)
3014 h
->maxQsinceinit
= h
->Qdepth
;
3019 static inline unsigned int make_status_bytes(unsigned int scsi_status_byte
,
3020 unsigned int msg_byte
, unsigned int host_byte
,
3021 unsigned int driver_byte
)
3023 /* inverse of macros in scsi.h */
3024 return (scsi_status_byte
& 0xff) |
3025 ((msg_byte
& 0xff) << 8) |
3026 ((host_byte
& 0xff) << 16) |
3027 ((driver_byte
& 0xff) << 24);
3030 static inline int evaluate_target_status(ctlr_info_t
*h
,
3031 CommandList_struct
*cmd
, int *retry_cmd
)
3033 unsigned char sense_key
;
3034 unsigned char status_byte
, msg_byte
, host_byte
, driver_byte
;
3038 /* If we get in here, it means we got "target status", that is, scsi status */
3039 status_byte
= cmd
->err_info
->ScsiStatus
;
3040 driver_byte
= DRIVER_OK
;
3041 msg_byte
= cmd
->err_info
->CommandStatus
; /* correct? seems too device specific */
3043 if (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
3044 host_byte
= DID_PASSTHROUGH
;
3048 error_value
= make_status_bytes(status_byte
, msg_byte
,
3049 host_byte
, driver_byte
);
3051 if (cmd
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
) {
3052 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
)
3053 dev_warn(&h
->pdev
->dev
, "cmd %p "
3054 "has SCSI Status 0x%x\n",
3055 cmd
, cmd
->err_info
->ScsiStatus
);
3059 /* check the sense key */
3060 sense_key
= 0xf & cmd
->err_info
->SenseInfo
[2];
3061 /* no status or recovered error */
3062 if (((sense_key
== 0x0) || (sense_key
== 0x1)) &&
3063 (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
))
3066 if (check_for_unit_attention(h
, cmd
)) {
3067 *retry_cmd
= !(cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
);
3071 /* Not SG_IO or similar? */
3072 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
) {
3073 if (error_value
!= 0)
3074 dev_warn(&h
->pdev
->dev
, "cmd %p has CHECK CONDITION"
3075 " sense key = 0x%x\n", cmd
, sense_key
);
3079 /* SG_IO or similar, copy sense data back */
3080 if (cmd
->rq
->sense
) {
3081 if (cmd
->rq
->sense_len
> cmd
->err_info
->SenseLen
)
3082 cmd
->rq
->sense_len
= cmd
->err_info
->SenseLen
;
3083 memcpy(cmd
->rq
->sense
, cmd
->err_info
->SenseInfo
,
3084 cmd
->rq
->sense_len
);
3086 cmd
->rq
->sense_len
= 0;
3091 /* checks the status of the job and calls complete buffers to mark all
3092 * buffers for the completed job. Note that this function does not need
3093 * to hold the hba/queue lock.
3095 static inline void complete_command(ctlr_info_t
*h
, CommandList_struct
*cmd
,
3099 struct request
*rq
= cmd
->rq
;
3104 rq
->errors
= make_status_bytes(0, 0, 0, DRIVER_TIMEOUT
);
3106 if (cmd
->err_info
->CommandStatus
== 0) /* no error has occurred */
3107 goto after_error_processing
;
3109 switch (cmd
->err_info
->CommandStatus
) {
3110 case CMD_TARGET_STATUS
:
3111 rq
->errors
= evaluate_target_status(h
, cmd
, &retry_cmd
);
3113 case CMD_DATA_UNDERRUN
:
3114 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
) {
3115 dev_warn(&h
->pdev
->dev
, "cmd %p has"
3116 " completed with data underrun "
3118 cmd
->rq
->resid_len
= cmd
->err_info
->ResidualCnt
;
3121 case CMD_DATA_OVERRUN
:
3122 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
)
3123 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has"
3124 " completed with data overrun "
3128 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p is "
3129 "reported invalid\n", cmd
);
3130 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3131 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3132 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3133 DID_PASSTHROUGH
: DID_ERROR
);
3135 case CMD_PROTOCOL_ERR
:
3136 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has "
3137 "protocol error\n", cmd
);
3138 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3139 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3140 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3141 DID_PASSTHROUGH
: DID_ERROR
);
3143 case CMD_HARDWARE_ERR
:
3144 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3145 " hardware error\n", cmd
);
3146 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3147 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3148 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3149 DID_PASSTHROUGH
: DID_ERROR
);
3151 case CMD_CONNECTION_LOST
:
3152 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3153 "connection lost\n", cmd
);
3154 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3155 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3156 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3157 DID_PASSTHROUGH
: DID_ERROR
);
3160 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p was "
3162 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3163 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3164 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3165 DID_PASSTHROUGH
: DID_ABORT
);
3167 case CMD_ABORT_FAILED
:
3168 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p reports "
3169 "abort failed\n", cmd
);
3170 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3171 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3172 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3173 DID_PASSTHROUGH
: DID_ERROR
);
3175 case CMD_UNSOLICITED_ABORT
:
3176 dev_warn(&h
->pdev
->dev
, "cciss%d: unsolicited "
3177 "abort %p\n", h
->ctlr
, cmd
);
3178 if (cmd
->retry_count
< MAX_CMD_RETRIES
) {
3180 dev_warn(&h
->pdev
->dev
, "retrying %p\n", cmd
);
3183 dev_warn(&h
->pdev
->dev
,
3184 "%p retried too many times\n", cmd
);
3185 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3186 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3187 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3188 DID_PASSTHROUGH
: DID_ABORT
);
3191 dev_warn(&h
->pdev
->dev
, "cmd %p timedout\n", cmd
);
3192 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3193 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3194 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3195 DID_PASSTHROUGH
: DID_ERROR
);
3197 case CMD_UNABORTABLE
:
3198 dev_warn(&h
->pdev
->dev
, "cmd %p unabortable\n", cmd
);
3199 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3200 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3201 cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
?
3202 DID_PASSTHROUGH
: DID_ERROR
);
3205 dev_warn(&h
->pdev
->dev
, "cmd %p returned "
3206 "unknown status %x\n", cmd
,
3207 cmd
->err_info
->CommandStatus
);
3208 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3209 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3210 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3211 DID_PASSTHROUGH
: DID_ERROR
);
3214 after_error_processing
:
3216 /* We need to return this command */
3218 resend_cciss_cmd(h
, cmd
);
3221 cmd
->rq
->completion_data
= cmd
;
3222 blk_complete_request(cmd
->rq
);
3225 static inline u32
cciss_tag_contains_index(u32 tag
)
3227 #define DIRECT_LOOKUP_BIT 0x10
3228 return tag
& DIRECT_LOOKUP_BIT
;
3231 static inline u32
cciss_tag_to_index(u32 tag
)
3233 #define DIRECT_LOOKUP_SHIFT 5
3234 return tag
>> DIRECT_LOOKUP_SHIFT
;
3237 static inline u32
cciss_tag_discard_error_bits(ctlr_info_t
*h
, u32 tag
)
3239 #define CCISS_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
3240 #define CCISS_SIMPLE_ERROR_BITS 0x03
3241 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
3242 return tag
& ~CCISS_PERF_ERROR_BITS
;
3243 return tag
& ~CCISS_SIMPLE_ERROR_BITS
;
3246 static inline void cciss_mark_tag_indexed(u32
*tag
)
3248 *tag
|= DIRECT_LOOKUP_BIT
;
3251 static inline void cciss_set_tag_index(u32
*tag
, u32 index
)
3253 *tag
|= (index
<< DIRECT_LOOKUP_SHIFT
);
3257 * Get a request and submit it to the controller.
3259 static void do_cciss_request(struct request_queue
*q
)
3261 ctlr_info_t
*h
= q
->queuedata
;
3262 CommandList_struct
*c
;
3265 struct request
*creq
;
3267 struct scatterlist
*tmp_sg
;
3268 SGDescriptor_struct
*curr_sg
;
3269 drive_info_struct
*drv
;
3275 creq
= blk_peek_request(q
);
3279 BUG_ON(creq
->nr_phys_segments
> h
->maxsgentries
);
3285 blk_start_request(creq
);
3287 tmp_sg
= h
->scatter_list
[c
->cmdindex
];
3288 spin_unlock_irq(q
->queue_lock
);
3290 c
->cmd_type
= CMD_RWREQ
;
3293 /* fill in the request */
3294 drv
= creq
->rq_disk
->private_data
;
3295 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
3296 /* got command from pool, so use the command block index instead */
3297 /* for direct lookups. */
3298 /* The first 2 bits are reserved for controller error reporting. */
3299 cciss_set_tag_index(&c
->Header
.Tag
.lower
, c
->cmdindex
);
3300 cciss_mark_tag_indexed(&c
->Header
.Tag
.lower
);
3301 memcpy(&c
->Header
.LUN
, drv
->LunID
, sizeof(drv
->LunID
));
3302 c
->Request
.CDBLen
= 10; /* 12 byte commands not in FW yet; */
3303 c
->Request
.Type
.Type
= TYPE_CMD
; /* It is a command. */
3304 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3305 c
->Request
.Type
.Direction
=
3306 (rq_data_dir(creq
) == READ
) ? XFER_READ
: XFER_WRITE
;
3307 c
->Request
.Timeout
= 0; /* Don't time out */
3309 (rq_data_dir(creq
) == READ
) ? h
->cciss_read
: h
->cciss_write
;
3310 start_blk
= blk_rq_pos(creq
);
3311 dev_dbg(&h
->pdev
->dev
, "sector =%d nr_sectors=%d\n",
3312 (int)blk_rq_pos(creq
), (int)blk_rq_sectors(creq
));
3313 sg_init_table(tmp_sg
, h
->maxsgentries
);
3314 seg
= blk_rq_map_sg(q
, creq
, tmp_sg
);
3316 /* get the DMA records for the setup */
3317 if (c
->Request
.Type
.Direction
== XFER_READ
)
3318 dir
= PCI_DMA_FROMDEVICE
;
3320 dir
= PCI_DMA_TODEVICE
;
3326 for (i
= 0; i
< seg
; i
++) {
3327 if (((sg_index
+1) == (h
->max_cmd_sgentries
)) &&
3328 !chained
&& ((seg
- i
) > 1)) {
3329 /* Point to next chain block. */
3330 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
3334 curr_sg
[sg_index
].Len
= tmp_sg
[i
].length
;
3335 temp64
.val
= (__u64
) pci_map_page(h
->pdev
, sg_page(&tmp_sg
[i
]),
3337 tmp_sg
[i
].length
, dir
);
3338 curr_sg
[sg_index
].Addr
.lower
= temp64
.val32
.lower
;
3339 curr_sg
[sg_index
].Addr
.upper
= temp64
.val32
.upper
;
3340 curr_sg
[sg_index
].Ext
= 0; /* we are not chaining */
3344 cciss_map_sg_chain_block(h
, c
, h
->cmd_sg_list
[c
->cmdindex
],
3345 (seg
- (h
->max_cmd_sgentries
- 1)) *
3346 sizeof(SGDescriptor_struct
));
3348 /* track how many SG entries we are using */
3352 dev_dbg(&h
->pdev
->dev
, "Submitting %u sectors in %d segments "
3354 blk_rq_sectors(creq
), seg
, chained
);
3356 c
->Header
.SGTotal
= seg
+ chained
;
3357 if (seg
<= h
->max_cmd_sgentries
)
3358 c
->Header
.SGList
= c
->Header
.SGTotal
;
3360 c
->Header
.SGList
= h
->max_cmd_sgentries
;
3361 set_performant_mode(h
, c
);
3363 if (likely(creq
->cmd_type
== REQ_TYPE_FS
)) {
3364 if(h
->cciss_read
== CCISS_READ_10
) {
3365 c
->Request
.CDB
[1] = 0;
3366 c
->Request
.CDB
[2] = (start_blk
>> 24) & 0xff; /* MSB */
3367 c
->Request
.CDB
[3] = (start_blk
>> 16) & 0xff;
3368 c
->Request
.CDB
[4] = (start_blk
>> 8) & 0xff;
3369 c
->Request
.CDB
[5] = start_blk
& 0xff;
3370 c
->Request
.CDB
[6] = 0; /* (sect >> 24) & 0xff; MSB */
3371 c
->Request
.CDB
[7] = (blk_rq_sectors(creq
) >> 8) & 0xff;
3372 c
->Request
.CDB
[8] = blk_rq_sectors(creq
) & 0xff;
3373 c
->Request
.CDB
[9] = c
->Request
.CDB
[11] = c
->Request
.CDB
[12] = 0;
3375 u32 upper32
= upper_32_bits(start_blk
);
3377 c
->Request
.CDBLen
= 16;
3378 c
->Request
.CDB
[1]= 0;
3379 c
->Request
.CDB
[2]= (upper32
>> 24) & 0xff; /* MSB */
3380 c
->Request
.CDB
[3]= (upper32
>> 16) & 0xff;
3381 c
->Request
.CDB
[4]= (upper32
>> 8) & 0xff;
3382 c
->Request
.CDB
[5]= upper32
& 0xff;
3383 c
->Request
.CDB
[6]= (start_blk
>> 24) & 0xff;
3384 c
->Request
.CDB
[7]= (start_blk
>> 16) & 0xff;
3385 c
->Request
.CDB
[8]= (start_blk
>> 8) & 0xff;
3386 c
->Request
.CDB
[9]= start_blk
& 0xff;
3387 c
->Request
.CDB
[10]= (blk_rq_sectors(creq
) >> 24) & 0xff;
3388 c
->Request
.CDB
[11]= (blk_rq_sectors(creq
) >> 16) & 0xff;
3389 c
->Request
.CDB
[12]= (blk_rq_sectors(creq
) >> 8) & 0xff;
3390 c
->Request
.CDB
[13]= blk_rq_sectors(creq
) & 0xff;
3391 c
->Request
.CDB
[14] = c
->Request
.CDB
[15] = 0;
3393 } else if (creq
->cmd_type
== REQ_TYPE_BLOCK_PC
) {
3394 c
->Request
.CDBLen
= creq
->cmd_len
;
3395 memcpy(c
->Request
.CDB
, creq
->cmd
, BLK_MAX_CDB
);
3397 dev_warn(&h
->pdev
->dev
, "bad request type %d\n",
3402 spin_lock_irq(q
->queue_lock
);
3406 if (h
->Qdepth
> h
->maxQsinceinit
)
3407 h
->maxQsinceinit
= h
->Qdepth
;
3413 /* We will already have the driver lock here so not need
3419 static inline unsigned long get_next_completion(ctlr_info_t
*h
)
3421 return h
->access
.command_completed(h
);
3424 static inline int interrupt_pending(ctlr_info_t
*h
)
3426 return h
->access
.intr_pending(h
);
3429 static inline long interrupt_not_for_us(ctlr_info_t
*h
)
3431 return ((h
->access
.intr_pending(h
) == 0) ||
3432 (h
->interrupts_enabled
== 0));
3435 static inline int bad_tag(ctlr_info_t
*h
, u32 tag_index
,
3438 if (unlikely(tag_index
>= h
->nr_cmds
)) {
3439 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
3445 static inline void finish_cmd(ctlr_info_t
*h
, CommandList_struct
*c
,
3449 if (likely(c
->cmd_type
== CMD_RWREQ
))
3450 complete_command(h
, c
, 0);
3451 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3452 complete(c
->waiting
);
3453 #ifdef CONFIG_CISS_SCSI_TAPE
3454 else if (c
->cmd_type
== CMD_SCSI
)
3455 complete_scsi_command(c
, 0, raw_tag
);
3459 static inline u32
next_command(ctlr_info_t
*h
)
3463 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
3464 return h
->access
.command_completed(h
);
3466 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
3467 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
3468 (h
->reply_pool_head
)++;
3469 h
->commands_outstanding
--;
3473 /* Check for wraparound */
3474 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
3475 h
->reply_pool_head
= h
->reply_pool
;
3476 h
->reply_pool_wraparound
^= 1;
3481 /* process completion of an indexed ("direct lookup") command */
3482 static inline u32
process_indexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3485 CommandList_struct
*c
;
3487 tag_index
= cciss_tag_to_index(raw_tag
);
3488 if (bad_tag(h
, tag_index
, raw_tag
))
3489 return next_command(h
);
3490 c
= h
->cmd_pool
+ tag_index
;
3491 finish_cmd(h
, c
, raw_tag
);
3492 return next_command(h
);
3495 /* process completion of a non-indexed command */
3496 static inline u32
process_nonindexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3498 CommandList_struct
*c
= NULL
;
3499 __u32 busaddr_masked
, tag_masked
;
3501 tag_masked
= cciss_tag_discard_error_bits(h
, raw_tag
);
3502 list_for_each_entry(c
, &h
->cmpQ
, list
) {
3503 busaddr_masked
= cciss_tag_discard_error_bits(h
, c
->busaddr
);
3504 if (busaddr_masked
== tag_masked
) {
3505 finish_cmd(h
, c
, raw_tag
);
3506 return next_command(h
);
3509 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3510 return next_command(h
);
3513 /* Some controllers, like p400, will give us one interrupt
3514 * after a soft reset, even if we turned interrupts off.
3515 * Only need to check for this in the cciss_xxx_discard_completions
3518 static int ignore_bogus_interrupt(ctlr_info_t
*h
)
3520 if (likely(!reset_devices
))
3523 if (likely(h
->interrupts_enabled
))
3526 dev_info(&h
->pdev
->dev
, "Received interrupt while interrupts disabled "
3527 "(known firmware bug.) Ignoring.\n");
3532 static irqreturn_t
cciss_intx_discard_completions(int irq
, void *dev_id
)
3534 ctlr_info_t
*h
= dev_id
;
3535 unsigned long flags
;
3538 if (ignore_bogus_interrupt(h
))
3541 if (interrupt_not_for_us(h
))
3543 spin_lock_irqsave(&h
->lock
, flags
);
3544 while (interrupt_pending(h
)) {
3545 raw_tag
= get_next_completion(h
);
3546 while (raw_tag
!= FIFO_EMPTY
)
3547 raw_tag
= next_command(h
);
3549 spin_unlock_irqrestore(&h
->lock
, flags
);
3553 static irqreturn_t
cciss_msix_discard_completions(int irq
, void *dev_id
)
3555 ctlr_info_t
*h
= dev_id
;
3556 unsigned long flags
;
3559 if (ignore_bogus_interrupt(h
))
3562 spin_lock_irqsave(&h
->lock
, flags
);
3563 raw_tag
= get_next_completion(h
);
3564 while (raw_tag
!= FIFO_EMPTY
)
3565 raw_tag
= next_command(h
);
3566 spin_unlock_irqrestore(&h
->lock
, flags
);
3570 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
)
3572 ctlr_info_t
*h
= dev_id
;
3573 unsigned long flags
;
3576 if (interrupt_not_for_us(h
))
3578 spin_lock_irqsave(&h
->lock
, flags
);
3579 while (interrupt_pending(h
)) {
3580 raw_tag
= get_next_completion(h
);
3581 while (raw_tag
!= FIFO_EMPTY
) {
3582 if (cciss_tag_contains_index(raw_tag
))
3583 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3585 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3588 spin_unlock_irqrestore(&h
->lock
, flags
);
3592 /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never
3593 * check the interrupt pending register because it is not set.
3595 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
)
3597 ctlr_info_t
*h
= dev_id
;
3598 unsigned long flags
;
3601 spin_lock_irqsave(&h
->lock
, flags
);
3602 raw_tag
= get_next_completion(h
);
3603 while (raw_tag
!= FIFO_EMPTY
) {
3604 if (cciss_tag_contains_index(raw_tag
))
3605 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3607 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3609 spin_unlock_irqrestore(&h
->lock
, flags
);
3614 * add_to_scan_list() - add controller to rescan queue
3615 * @h: Pointer to the controller.
3617 * Adds the controller to the rescan queue if not already on the queue.
3619 * returns 1 if added to the queue, 0 if skipped (could be on the
3620 * queue already, or the controller could be initializing or shutting
3623 static int add_to_scan_list(struct ctlr_info
*h
)
3625 struct ctlr_info
*test_h
;
3629 if (h
->busy_initializing
)
3632 if (!mutex_trylock(&h
->busy_shutting_down
))
3635 mutex_lock(&scan_mutex
);
3636 list_for_each_entry(test_h
, &scan_q
, scan_list
) {
3642 if (!found
&& !h
->busy_scanning
) {
3643 INIT_COMPLETION(h
->scan_wait
);
3644 list_add_tail(&h
->scan_list
, &scan_q
);
3647 mutex_unlock(&scan_mutex
);
3648 mutex_unlock(&h
->busy_shutting_down
);
3654 * remove_from_scan_list() - remove controller from rescan queue
3655 * @h: Pointer to the controller.
3657 * Removes the controller from the rescan queue if present. Blocks if
3658 * the controller is currently conducting a rescan. The controller
3659 * can be in one of three states:
3660 * 1. Doesn't need a scan
3661 * 2. On the scan list, but not scanning yet (we remove it)
3662 * 3. Busy scanning (and not on the list). In this case we want to wait for
3663 * the scan to complete to make sure the scanning thread for this
3664 * controller is completely idle.
3666 static void remove_from_scan_list(struct ctlr_info
*h
)
3668 struct ctlr_info
*test_h
, *tmp_h
;
3670 mutex_lock(&scan_mutex
);
3671 list_for_each_entry_safe(test_h
, tmp_h
, &scan_q
, scan_list
) {
3672 if (test_h
== h
) { /* state 2. */
3673 list_del(&h
->scan_list
);
3674 complete_all(&h
->scan_wait
);
3675 mutex_unlock(&scan_mutex
);
3679 if (h
->busy_scanning
) { /* state 3. */
3680 mutex_unlock(&scan_mutex
);
3681 wait_for_completion(&h
->scan_wait
);
3682 } else { /* state 1, nothing to do. */
3683 mutex_unlock(&scan_mutex
);
3688 * scan_thread() - kernel thread used to rescan controllers
3691 * A kernel thread used scan for drive topology changes on
3692 * controllers. The thread processes only one controller at a time
3693 * using a queue. Controllers are added to the queue using
3694 * add_to_scan_list() and removed from the queue either after done
3695 * processing or using remove_from_scan_list().
3699 static int scan_thread(void *data
)
3701 struct ctlr_info
*h
;
3704 set_current_state(TASK_INTERRUPTIBLE
);
3706 if (kthread_should_stop())
3710 mutex_lock(&scan_mutex
);
3711 if (list_empty(&scan_q
)) {
3712 mutex_unlock(&scan_mutex
);
3716 h
= list_entry(scan_q
.next
,
3719 list_del(&h
->scan_list
);
3720 h
->busy_scanning
= 1;
3721 mutex_unlock(&scan_mutex
);
3723 rebuild_lun_table(h
, 0, 0);
3724 complete_all(&h
->scan_wait
);
3725 mutex_lock(&scan_mutex
);
3726 h
->busy_scanning
= 0;
3727 mutex_unlock(&scan_mutex
);
3734 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
3736 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
3739 switch (c
->err_info
->SenseInfo
[12]) {
3741 dev_warn(&h
->pdev
->dev
, "a state change "
3742 "detected, command retried\n");
3746 dev_warn(&h
->pdev
->dev
, "LUN failure "
3747 "detected, action required\n");
3750 case REPORT_LUNS_CHANGED
:
3751 dev_warn(&h
->pdev
->dev
, "report LUN data changed\n");
3753 * Here, we could call add_to_scan_list and wake up the scan thread,
3754 * except that it's quite likely that we will get more than one
3755 * REPORT_LUNS_CHANGED condition in quick succession, which means
3756 * that those which occur after the first one will likely happen
3757 * *during* the scan_thread's rescan. And the rescan code is not
3758 * robust enough to restart in the middle, undoing what it has already
3759 * done, and it's not clear that it's even possible to do this, since
3760 * part of what it does is notify the block layer, which starts
3761 * doing it's own i/o to read partition tables and so on, and the
3762 * driver doesn't have visibility to know what might need undoing.
3763 * In any event, if possible, it is horribly complicated to get right
3764 * so we just don't do it for now.
3766 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
3770 case POWER_OR_RESET
:
3771 dev_warn(&h
->pdev
->dev
,
3772 "a power on or device reset detected\n");
3775 case UNIT_ATTENTION_CLEARED
:
3776 dev_warn(&h
->pdev
->dev
,
3777 "unit attention cleared by another initiator\n");
3781 dev_warn(&h
->pdev
->dev
, "unknown unit attention detected\n");
3787 * We cannot read the structure directly, for portability we must use
3789 * This is for debug only.
3791 static void print_cfg_table(ctlr_info_t
*h
)
3795 CfgTable_struct
*tb
= h
->cfgtable
;
3797 dev_dbg(&h
->pdev
->dev
, "Controller Configuration information\n");
3798 dev_dbg(&h
->pdev
->dev
, "------------------------------------\n");
3799 for (i
= 0; i
< 4; i
++)
3800 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3801 temp_name
[4] = '\0';
3802 dev_dbg(&h
->pdev
->dev
, " Signature = %s\n", temp_name
);
3803 dev_dbg(&h
->pdev
->dev
, " Spec Number = %d\n",
3804 readl(&(tb
->SpecValence
)));
3805 dev_dbg(&h
->pdev
->dev
, " Transport methods supported = 0x%x\n",
3806 readl(&(tb
->TransportSupport
)));
3807 dev_dbg(&h
->pdev
->dev
, " Transport methods active = 0x%x\n",
3808 readl(&(tb
->TransportActive
)));
3809 dev_dbg(&h
->pdev
->dev
, " Requested transport Method = 0x%x\n",
3810 readl(&(tb
->HostWrite
.TransportRequest
)));
3811 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Delay = 0x%x\n",
3812 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3813 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Count = 0x%x\n",
3814 readl(&(tb
->HostWrite
.CoalIntCount
)));
3815 dev_dbg(&h
->pdev
->dev
, " Max outstanding commands = 0x%d\n",
3816 readl(&(tb
->CmdsOutMax
)));
3817 dev_dbg(&h
->pdev
->dev
, " Bus Types = 0x%x\n",
3818 readl(&(tb
->BusTypes
)));
3819 for (i
= 0; i
< 16; i
++)
3820 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3821 temp_name
[16] = '\0';
3822 dev_dbg(&h
->pdev
->dev
, " Server Name = %s\n", temp_name
);
3823 dev_dbg(&h
->pdev
->dev
, " Heartbeat Counter = 0x%x\n\n\n",
3824 readl(&(tb
->HeartBeat
)));
3827 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3829 int i
, offset
, mem_type
, bar_type
;
3830 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3833 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3834 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3835 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3838 mem_type
= pci_resource_flags(pdev
, i
) &
3839 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3841 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3842 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3843 offset
+= 4; /* 32 bit */
3845 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3848 default: /* reserved in PCI 2.2 */
3849 dev_warn(&pdev
->dev
,
3850 "Base address is invalid\n");
3855 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3861 /* Fill in bucket_map[], given nsgs (the max number of
3862 * scatter gather elements supported) and bucket[],
3863 * which is an array of 8 integers. The bucket[] array
3864 * contains 8 different DMA transfer sizes (in 16
3865 * byte increments) which the controller uses to fetch
3866 * commands. This function fills in bucket_map[], which
3867 * maps a given number of scatter gather elements to one of
3868 * the 8 DMA transfer sizes. The point of it is to allow the
3869 * controller to only do as much DMA as needed to fetch the
3870 * command, with the DMA transfer size encoded in the lower
3871 * bits of the command address.
3873 static void calc_bucket_map(int bucket
[], int num_buckets
,
3874 int nsgs
, int *bucket_map
)
3878 /* even a command with 0 SGs requires 4 blocks */
3879 #define MINIMUM_TRANSFER_BLOCKS 4
3880 #define NUM_BUCKETS 8
3881 /* Note, bucket_map must have nsgs+1 entries. */
3882 for (i
= 0; i
<= nsgs
; i
++) {
3883 /* Compute size of a command with i SG entries */
3884 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
3885 b
= num_buckets
; /* Assume the biggest bucket */
3886 /* Find the bucket that is just big enough */
3887 for (j
= 0; j
< 8; j
++) {
3888 if (bucket
[j
] >= size
) {
3893 /* for a command with i SG entries, use bucket b. */
3898 static void __devinit
cciss_wait_for_mode_change_ack(ctlr_info_t
*h
)
3902 /* under certain very rare conditions, this can take awhile.
3903 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3904 * as we enter this code.) */
3905 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3906 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
3908 usleep_range(10000, 20000);
3912 static __devinit
void cciss_enter_performant_mode(ctlr_info_t
*h
,
3915 /* This is a bit complicated. There are 8 registers on
3916 * the controller which we write to to tell it 8 different
3917 * sizes of commands which there may be. It's a way of
3918 * reducing the DMA done to fetch each command. Encoded into
3919 * each command's tag are 3 bits which communicate to the controller
3920 * which of the eight sizes that command fits within. The size of
3921 * each command depends on how many scatter gather entries there are.
3922 * Each SG entry requires 16 bytes. The eight registers are programmed
3923 * with the number of 16-byte blocks a command of that size requires.
3924 * The smallest command possible requires 5 such 16 byte blocks.
3925 * the largest command possible requires MAXSGENTRIES + 4 16-byte
3926 * blocks. Note, this only extends to the SG entries contained
3927 * within the command block, and does not extend to chained blocks
3928 * of SG elements. bft[] contains the eight values we write to
3929 * the registers. They are not evenly distributed, but have more
3930 * sizes for small commands, and fewer sizes for larger commands.
3933 int bft
[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES
+ 4};
3935 * 5 = 1 s/g entry or 4k
3936 * 6 = 2 s/g entry or 8k
3937 * 8 = 4 s/g entry or 16k
3938 * 10 = 6 s/g entry or 24k
3940 unsigned long register_value
;
3941 BUILD_BUG_ON(28 > MAXSGENTRIES
+ 4);
3943 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
3945 /* Controller spec: zero out this buffer. */
3946 memset(h
->reply_pool
, 0, h
->max_commands
* sizeof(__u64
));
3947 h
->reply_pool_head
= h
->reply_pool
;
3949 trans_offset
= readl(&(h
->cfgtable
->TransMethodOffset
));
3950 calc_bucket_map(bft
, ARRAY_SIZE(bft
), h
->maxsgentries
,
3951 h
->blockFetchTable
);
3952 writel(bft
[0], &h
->transtable
->BlockFetch0
);
3953 writel(bft
[1], &h
->transtable
->BlockFetch1
);
3954 writel(bft
[2], &h
->transtable
->BlockFetch2
);
3955 writel(bft
[3], &h
->transtable
->BlockFetch3
);
3956 writel(bft
[4], &h
->transtable
->BlockFetch4
);
3957 writel(bft
[5], &h
->transtable
->BlockFetch5
);
3958 writel(bft
[6], &h
->transtable
->BlockFetch6
);
3959 writel(bft
[7], &h
->transtable
->BlockFetch7
);
3961 /* size of controller ring buffer */
3962 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
3963 writel(1, &h
->transtable
->RepQCount
);
3964 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
3965 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
3966 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
3967 writel(0, &h
->transtable
->RepQAddr0High32
);
3968 writel(CFGTBL_Trans_Performant
| use_short_tags
,
3969 &(h
->cfgtable
->HostWrite
.TransportRequest
));
3971 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3972 cciss_wait_for_mode_change_ack(h
);
3973 register_value
= readl(&(h
->cfgtable
->TransportActive
));
3974 if (!(register_value
& CFGTBL_Trans_Performant
))
3975 dev_warn(&h
->pdev
->dev
, "cciss: unable to get board into"
3976 " performant mode\n");
3979 static void __devinit
cciss_put_controller_into_performant_mode(ctlr_info_t
*h
)
3981 __u32 trans_support
;
3983 dev_dbg(&h
->pdev
->dev
, "Trying to put board into Performant mode\n");
3984 /* Attempt to put controller into performant mode if supported */
3985 /* Does board support performant mode? */
3986 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
3987 if (!(trans_support
& PERFORMANT_MODE
))
3990 dev_dbg(&h
->pdev
->dev
, "Placing controller into performant mode\n");
3991 /* Performant mode demands commands on a 32 byte boundary
3992 * pci_alloc_consistent aligns on page boundarys already.
3993 * Just need to check if divisible by 32
3995 if ((sizeof(CommandList_struct
) % 32) != 0) {
3996 dev_warn(&h
->pdev
->dev
, "%s %d %s\n",
3997 "cciss info: command size[",
3998 (int)sizeof(CommandList_struct
),
3999 "] not divisible by 32, no performant mode..\n");
4003 /* Performant mode ring buffer and supporting data structures */
4004 h
->reply_pool
= (__u64
*)pci_alloc_consistent(
4005 h
->pdev
, h
->max_commands
* sizeof(__u64
),
4006 &(h
->reply_pool_dhandle
));
4008 /* Need a block fetch table for performant mode */
4009 h
->blockFetchTable
= kmalloc(((h
->maxsgentries
+1) *
4010 sizeof(__u32
)), GFP_KERNEL
);
4012 if ((h
->reply_pool
== NULL
) || (h
->blockFetchTable
== NULL
))
4015 cciss_enter_performant_mode(h
,
4016 trans_support
& CFGTBL_Trans_use_short_tags
);
4018 /* Change the access methods to the performant access methods */
4019 h
->access
= SA5_performant_access
;
4020 h
->transMethod
= CFGTBL_Trans_Performant
;
4024 kfree(h
->blockFetchTable
);
4026 pci_free_consistent(h
->pdev
,
4027 h
->max_commands
* sizeof(__u64
),
4029 h
->reply_pool_dhandle
);
4032 } /* cciss_put_controller_into_performant_mode */
4034 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
4035 * controllers that are capable. If not, we use IO-APIC mode.
4038 static void __devinit
cciss_interrupt_mode(ctlr_info_t
*h
)
4040 #ifdef CONFIG_PCI_MSI
4042 struct msix_entry cciss_msix_entries
[4] = { {0, 0}, {0, 1},
4046 /* Some boards advertise MSI but don't really support it */
4047 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
4048 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
4049 goto default_int_mode
;
4051 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSIX
)) {
4052 err
= pci_enable_msix(h
->pdev
, cciss_msix_entries
, 4);
4054 h
->intr
[0] = cciss_msix_entries
[0].vector
;
4055 h
->intr
[1] = cciss_msix_entries
[1].vector
;
4056 h
->intr
[2] = cciss_msix_entries
[2].vector
;
4057 h
->intr
[3] = cciss_msix_entries
[3].vector
;
4062 dev_warn(&h
->pdev
->dev
,
4063 "only %d MSI-X vectors available\n", err
);
4064 goto default_int_mode
;
4066 dev_warn(&h
->pdev
->dev
,
4067 "MSI-X init failed %d\n", err
);
4068 goto default_int_mode
;
4071 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSI
)) {
4072 if (!pci_enable_msi(h
->pdev
))
4075 dev_warn(&h
->pdev
->dev
, "MSI init failed\n");
4078 #endif /* CONFIG_PCI_MSI */
4079 /* if we get here we're going to use the default interrupt mode */
4080 h
->intr
[PERF_MODE_INT
] = h
->pdev
->irq
;
4084 static int __devinit
cciss_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
4087 u32 subsystem_vendor_id
, subsystem_device_id
;
4089 subsystem_vendor_id
= pdev
->subsystem_vendor
;
4090 subsystem_device_id
= pdev
->subsystem_device
;
4091 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
4092 subsystem_vendor_id
;
4094 for (i
= 0; i
< ARRAY_SIZE(products
); i
++)
4095 if (*board_id
== products
[i
].board_id
)
4097 dev_warn(&pdev
->dev
, "unrecognized board ID: 0x%08x, ignoring.\n",
4102 static inline bool cciss_board_disabled(ctlr_info_t
*h
)
4106 (void) pci_read_config_word(h
->pdev
, PCI_COMMAND
, &command
);
4107 return ((command
& PCI_COMMAND_MEMORY
) == 0);
4110 static int __devinit
cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
4111 unsigned long *memory_bar
)
4115 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
4116 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
4117 /* addressing mode bits already removed */
4118 *memory_bar
= pci_resource_start(pdev
, i
);
4119 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
4123 dev_warn(&pdev
->dev
, "no memory BAR found\n");
4127 static int __devinit
cciss_wait_for_board_state(struct pci_dev
*pdev
,
4128 void __iomem
*vaddr
, int wait_for_ready
)
4129 #define BOARD_READY 1
4130 #define BOARD_NOT_READY 0
4136 iterations
= CCISS_BOARD_READY_ITERATIONS
;
4138 iterations
= CCISS_BOARD_NOT_READY_ITERATIONS
;
4140 for (i
= 0; i
< iterations
; i
++) {
4141 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
4142 if (wait_for_ready
) {
4143 if (scratchpad
== CCISS_FIRMWARE_READY
)
4146 if (scratchpad
!= CCISS_FIRMWARE_READY
)
4149 msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS
);
4151 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
4155 static int __devinit
cciss_find_cfg_addrs(struct pci_dev
*pdev
,
4156 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
4159 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
4160 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
4161 *cfg_base_addr
&= (u32
) 0x0000ffff;
4162 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
4163 if (*cfg_base_addr_index
== -1) {
4164 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index, "
4165 "*cfg_base_addr = 0x%08x\n", *cfg_base_addr
);
4171 static int __devinit
cciss_find_cfgtables(ctlr_info_t
*h
)
4175 u64 cfg_base_addr_index
;
4179 rc
= cciss_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
4180 &cfg_base_addr_index
, &cfg_offset
);
4183 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4184 cfg_base_addr_index
) + cfg_offset
, sizeof(h
->cfgtable
));
4187 rc
= write_driver_ver_to_cfgtable(h
->cfgtable
);
4190 /* Find performant mode table. */
4191 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
4192 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4193 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
4194 sizeof(*h
->transtable
));
4200 static void __devinit
cciss_get_max_perf_mode_cmds(struct ctlr_info
*h
)
4202 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
4204 /* Limit commands in memory limited kdump scenario. */
4205 if (reset_devices
&& h
->max_commands
> 32)
4206 h
->max_commands
= 32;
4208 if (h
->max_commands
< 16) {
4209 dev_warn(&h
->pdev
->dev
, "Controller reports "
4210 "max supported commands of %d, an obvious lie. "
4211 "Using 16. Ensure that firmware is up to date.\n",
4213 h
->max_commands
= 16;
4217 /* Interrogate the hardware for some limits:
4218 * max commands, max SG elements without chaining, and with chaining,
4219 * SG chain block size, etc.
4221 static void __devinit
cciss_find_board_params(ctlr_info_t
*h
)
4223 cciss_get_max_perf_mode_cmds(h
);
4224 h
->nr_cmds
= h
->max_commands
- 4; /* Allow room for some ioctls */
4225 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxSGElements
));
4227 * Limit in-command s/g elements to 32 save dma'able memory.
4228 * Howvever spec says if 0, use 31
4230 h
->max_cmd_sgentries
= 31;
4231 if (h
->maxsgentries
> 512) {
4232 h
->max_cmd_sgentries
= 32;
4233 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sgentries
+ 1;
4234 h
->maxsgentries
--; /* save one for chain pointer */
4236 h
->maxsgentries
= 31; /* default to traditional values */
4241 static inline bool CISS_signature_present(ctlr_info_t
*h
)
4243 if ((readb(&h
->cfgtable
->Signature
[0]) != 'C') ||
4244 (readb(&h
->cfgtable
->Signature
[1]) != 'I') ||
4245 (readb(&h
->cfgtable
->Signature
[2]) != 'S') ||
4246 (readb(&h
->cfgtable
->Signature
[3]) != 'S')) {
4247 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
4253 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
4254 static inline void cciss_enable_scsi_prefetch(ctlr_info_t
*h
)
4259 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
4261 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
4265 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
4266 * in a prefetch beyond physical memory.
4268 static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t
*h
)
4273 if (h
->board_id
!= 0x3225103C)
4275 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
4276 dma_prefetch
|= 0x8000;
4277 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
4278 pci_read_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, &dma_refetch
);
4280 pci_write_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, dma_refetch
);
4283 static int __devinit
cciss_pci_init(ctlr_info_t
*h
)
4285 int prod_index
, err
;
4287 prod_index
= cciss_lookup_board_id(h
->pdev
, &h
->board_id
);
4290 h
->product_name
= products
[prod_index
].product_name
;
4291 h
->access
= *(products
[prod_index
].access
);
4293 if (cciss_board_disabled(h
)) {
4294 dev_warn(&h
->pdev
->dev
, "controller appears to be disabled\n");
4297 err
= pci_enable_device(h
->pdev
);
4299 dev_warn(&h
->pdev
->dev
, "Unable to Enable PCI device\n");
4303 err
= pci_request_regions(h
->pdev
, "cciss");
4305 dev_warn(&h
->pdev
->dev
,
4306 "Cannot obtain PCI resources, aborting\n");
4310 dev_dbg(&h
->pdev
->dev
, "irq = %x\n", h
->pdev
->irq
);
4311 dev_dbg(&h
->pdev
->dev
, "board_id = %x\n", h
->board_id
);
4313 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
4314 * else we use the IO-APIC interrupt assigned to us by system ROM.
4316 cciss_interrupt_mode(h
);
4317 err
= cciss_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
4319 goto err_out_free_res
;
4320 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
4323 goto err_out_free_res
;
4325 err
= cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
4327 goto err_out_free_res
;
4328 err
= cciss_find_cfgtables(h
);
4330 goto err_out_free_res
;
4332 cciss_find_board_params(h
);
4334 if (!CISS_signature_present(h
)) {
4336 goto err_out_free_res
;
4338 cciss_enable_scsi_prefetch(h
);
4339 cciss_p600_dma_prefetch_quirk(h
);
4340 cciss_put_controller_into_performant_mode(h
);
4345 * Deliberately omit pci_disable_device(): it does something nasty to
4346 * Smart Array controllers that pci_enable_device does not undo
4349 iounmap(h
->transtable
);
4351 iounmap(h
->cfgtable
);
4354 pci_release_regions(h
->pdev
);
4358 /* Function to find the first free pointer into our hba[] array
4359 * Returns -1 if no free entries are left.
4361 static int alloc_cciss_hba(struct pci_dev
*pdev
)
4365 for (i
= 0; i
< MAX_CTLR
; i
++) {
4369 h
= kzalloc(sizeof(ctlr_info_t
), GFP_KERNEL
);
4376 dev_warn(&pdev
->dev
, "This driver supports a maximum"
4377 " of %d controllers.\n", MAX_CTLR
);
4380 dev_warn(&pdev
->dev
, "out of memory.\n");
4384 static void free_hba(ctlr_info_t
*h
)
4388 hba
[h
->ctlr
] = NULL
;
4389 for (i
= 0; i
< h
->highest_lun
+ 1; i
++)
4390 if (h
->gendisk
[i
] != NULL
)
4391 put_disk(h
->gendisk
[i
]);
4395 /* Send a message CDB to the firmware. */
4396 static __devinit
int cciss_message(struct pci_dev
*pdev
, unsigned char opcode
, unsigned char type
)
4399 CommandListHeader_struct CommandHeader
;
4400 RequestBlock_struct Request
;
4401 ErrDescriptor_struct ErrorDescriptor
;
4403 static const size_t cmd_sz
= sizeof(Command
) + sizeof(ErrorInfo_struct
);
4406 uint32_t paddr32
, tag
;
4407 void __iomem
*vaddr
;
4410 vaddr
= ioremap_nocache(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
4414 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
4415 CCISS commands, so they must be allocated from the lower 4GiB of
4417 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4423 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
4429 /* This must fit, because of the 32-bit consistent DMA mask. Also,
4430 although there's no guarantee, we assume that the address is at
4431 least 4-byte aligned (most likely, it's page-aligned). */
4434 cmd
->CommandHeader
.ReplyQueue
= 0;
4435 cmd
->CommandHeader
.SGList
= 0;
4436 cmd
->CommandHeader
.SGTotal
= 0;
4437 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
4438 cmd
->CommandHeader
.Tag
.upper
= 0;
4439 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
4441 cmd
->Request
.CDBLen
= 16;
4442 cmd
->Request
.Type
.Type
= TYPE_MSG
;
4443 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
4444 cmd
->Request
.Type
.Direction
= XFER_NONE
;
4445 cmd
->Request
.Timeout
= 0; /* Don't time out */
4446 cmd
->Request
.CDB
[0] = opcode
;
4447 cmd
->Request
.CDB
[1] = type
;
4448 memset(&cmd
->Request
.CDB
[2], 0, 14); /* the rest of the CDB is reserved */
4450 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(Command
);
4451 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
4452 cmd
->ErrorDescriptor
.Len
= sizeof(ErrorInfo_struct
);
4454 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
4456 for (i
= 0; i
< 10; i
++) {
4457 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
4458 if ((tag
& ~3) == paddr32
)
4460 msleep(CCISS_POST_RESET_NOOP_TIMEOUT_MSECS
);
4465 /* we leak the DMA buffer here ... no choice since the controller could
4466 still complete the command. */
4469 "controller message %02x:%02x timed out\n",
4474 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
4477 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
4482 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
4487 #define cciss_noop(p) cciss_message(p, 3, 0)
4489 static int cciss_controller_hard_reset(struct pci_dev
*pdev
,
4490 void * __iomem vaddr
, u32 use_doorbell
)
4496 /* For everything after the P600, the PCI power state method
4497 * of resetting the controller doesn't work, so we have this
4498 * other way using the doorbell register.
4500 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
4501 writel(use_doorbell
, vaddr
+ SA5_DOORBELL
);
4502 } else { /* Try to do it the PCI power state way */
4504 /* Quoting from the Open CISS Specification: "The Power
4505 * Management Control/Status Register (CSR) controls the power
4506 * state of the device. The normal operating state is D0,
4507 * CSR=00h. The software off state is D3, CSR=03h. To reset
4508 * the controller, place the interface device in D3 then to D0,
4509 * this causes a secondary PCI reset which will reset the
4512 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
4515 "cciss_controller_hard_reset: "
4516 "PCI PM not supported\n");
4519 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
4520 /* enter the D3hot power management state */
4521 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
4522 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4524 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4528 /* enter the D0 power management state */
4529 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4531 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4536 static __devinit
void init_driver_version(char *driver_version
, int len
)
4538 memset(driver_version
, 0, len
);
4539 strncpy(driver_version
, "cciss " DRIVER_NAME
, len
- 1);
4542 static __devinit
int write_driver_ver_to_cfgtable(
4543 CfgTable_struct __iomem
*cfgtable
)
4545 char *driver_version
;
4546 int i
, size
= sizeof(cfgtable
->driver_version
);
4548 driver_version
= kmalloc(size
, GFP_KERNEL
);
4549 if (!driver_version
)
4552 init_driver_version(driver_version
, size
);
4553 for (i
= 0; i
< size
; i
++)
4554 writeb(driver_version
[i
], &cfgtable
->driver_version
[i
]);
4555 kfree(driver_version
);
4559 static __devinit
void read_driver_ver_from_cfgtable(
4560 CfgTable_struct __iomem
*cfgtable
, unsigned char *driver_ver
)
4564 for (i
= 0; i
< sizeof(cfgtable
->driver_version
); i
++)
4565 driver_ver
[i
] = readb(&cfgtable
->driver_version
[i
]);
4568 static __devinit
int controller_reset_failed(
4569 CfgTable_struct __iomem
*cfgtable
)
4572 char *driver_ver
, *old_driver_ver
;
4573 int rc
, size
= sizeof(cfgtable
->driver_version
);
4575 old_driver_ver
= kmalloc(2 * size
, GFP_KERNEL
);
4576 if (!old_driver_ver
)
4578 driver_ver
= old_driver_ver
+ size
;
4580 /* After a reset, the 32 bytes of "driver version" in the cfgtable
4581 * should have been changed, otherwise we know the reset failed.
4583 init_driver_version(old_driver_ver
, size
);
4584 read_driver_ver_from_cfgtable(cfgtable
, driver_ver
);
4585 rc
= !memcmp(driver_ver
, old_driver_ver
, size
);
4586 kfree(old_driver_ver
);
4590 /* This does a hard reset of the controller using PCI power management
4591 * states or using the doorbell register. */
4592 static __devinit
int cciss_kdump_hard_reset_controller(struct pci_dev
*pdev
)
4596 u64 cfg_base_addr_index
;
4597 void __iomem
*vaddr
;
4598 unsigned long paddr
;
4599 u32 misc_fw_support
;
4601 CfgTable_struct __iomem
*cfgtable
;
4604 u16 command_register
;
4606 /* For controllers as old a the p600, this is very nearly
4609 * pci_save_state(pci_dev);
4610 * pci_set_power_state(pci_dev, PCI_D3hot);
4611 * pci_set_power_state(pci_dev, PCI_D0);
4612 * pci_restore_state(pci_dev);
4614 * For controllers newer than the P600, the pci power state
4615 * method of resetting doesn't work so we have another way
4616 * using the doorbell register.
4619 /* Exclude 640x boards. These are two pci devices in one slot
4620 * which share a battery backed cache module. One controls the
4621 * cache, the other accesses the cache through the one that controls
4622 * it. If we reset the one controlling the cache, the other will
4623 * likely not be happy. Just forbid resetting this conjoined mess.
4625 cciss_lookup_board_id(pdev
, &board_id
);
4626 if (!ctlr_is_resettable(board_id
)) {
4627 dev_warn(&pdev
->dev
, "Cannot reset Smart Array 640x "
4628 "due to shared cache module.");
4632 /* if controller is soft- but not hard resettable... */
4633 if (!ctlr_is_hard_resettable(board_id
))
4634 return -ENOTSUPP
; /* try soft reset later. */
4636 /* Save the PCI command register */
4637 pci_read_config_word(pdev
, 4, &command_register
);
4638 /* Turn the board off. This is so that later pci_restore_state()
4639 * won't turn the board on before the rest of config space is ready.
4641 pci_disable_device(pdev
);
4642 pci_save_state(pdev
);
4644 /* find the first memory BAR, so we can find the cfg table */
4645 rc
= cciss_pci_find_memory_BAR(pdev
, &paddr
);
4648 vaddr
= remap_pci_mem(paddr
, 0x250);
4652 /* find cfgtable in order to check if reset via doorbell is supported */
4653 rc
= cciss_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
4654 &cfg_base_addr_index
, &cfg_offset
);
4657 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
4658 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
4663 rc
= write_driver_ver_to_cfgtable(cfgtable
);
4667 /* If reset via doorbell register is supported, use that.
4668 * There are two such methods. Favor the newest method.
4670 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
4671 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET2
;
4673 use_doorbell
= DOORBELL_CTLR_RESET2
;
4675 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
4677 dev_warn(&pdev
->dev
, "Controller claims that "
4678 "'Bit 2 doorbell reset' is "
4679 "supported, but not 'bit 5 doorbell reset'. "
4680 "Firmware update is recommended.\n");
4681 rc
= -ENOTSUPP
; /* use the soft reset */
4682 goto unmap_cfgtable
;
4686 rc
= cciss_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
4688 goto unmap_cfgtable
;
4689 pci_restore_state(pdev
);
4690 rc
= pci_enable_device(pdev
);
4692 dev_warn(&pdev
->dev
, "failed to enable device.\n");
4693 goto unmap_cfgtable
;
4695 pci_write_config_word(pdev
, 4, command_register
);
4697 /* Some devices (notably the HP Smart Array 5i Controller)
4698 need a little pause here */
4699 msleep(CCISS_POST_RESET_PAUSE_MSECS
);
4701 /* Wait for board to become not ready, then ready. */
4702 dev_info(&pdev
->dev
, "Waiting for board to reset.\n");
4703 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
4705 dev_warn(&pdev
->dev
, "Failed waiting for board to hard reset."
4706 " Will try soft reset.\n");
4707 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4708 goto unmap_cfgtable
;
4710 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
4712 dev_warn(&pdev
->dev
,
4713 "failed waiting for board to become ready "
4714 "after hard reset\n");
4715 goto unmap_cfgtable
;
4718 rc
= controller_reset_failed(vaddr
);
4720 goto unmap_cfgtable
;
4722 dev_warn(&pdev
->dev
, "Unable to successfully hard reset "
4723 "controller. Will try soft reset.\n");
4724 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4726 dev_info(&pdev
->dev
, "Board ready after hard reset.\n");
4737 static __devinit
int cciss_init_reset_devices(struct pci_dev
*pdev
)
4744 /* Reset the controller with a PCI power-cycle or via doorbell */
4745 rc
= cciss_kdump_hard_reset_controller(pdev
);
4747 /* -ENOTSUPP here means we cannot reset the controller
4748 * but it's already (and still) up and running in
4749 * "performant mode". Or, it might be 640x, which can't reset
4750 * due to concerns about shared bbwc between 6402/6404 pair.
4752 if (rc
== -ENOTSUPP
)
4753 return rc
; /* just try to do the kdump anyhow. */
4757 /* Now try to get the controller to respond to a no-op */
4758 dev_warn(&pdev
->dev
, "Waiting for controller to respond to no-op\n");
4759 for (i
= 0; i
< CCISS_POST_RESET_NOOP_RETRIES
; i
++) {
4760 if (cciss_noop(pdev
) == 0)
4763 dev_warn(&pdev
->dev
, "no-op failed%s\n",
4764 (i
< CCISS_POST_RESET_NOOP_RETRIES
- 1 ?
4765 "; re-trying" : ""));
4766 msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS
);
4771 static __devinit
int cciss_allocate_cmd_pool(ctlr_info_t
*h
)
4773 h
->cmd_pool_bits
= kmalloc(
4774 DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
) *
4775 sizeof(unsigned long), GFP_KERNEL
);
4776 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
4777 h
->nr_cmds
* sizeof(CommandList_struct
),
4778 &(h
->cmd_pool_dhandle
));
4779 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
4780 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4781 &(h
->errinfo_pool_dhandle
));
4782 if ((h
->cmd_pool_bits
== NULL
)
4783 || (h
->cmd_pool
== NULL
)
4784 || (h
->errinfo_pool
== NULL
)) {
4785 dev_err(&h
->pdev
->dev
, "out of memory");
4791 static __devinit
int cciss_allocate_scatterlists(ctlr_info_t
*h
)
4795 /* zero it, so that on free we need not know how many were alloc'ed */
4796 h
->scatter_list
= kzalloc(h
->max_commands
*
4797 sizeof(struct scatterlist
*), GFP_KERNEL
);
4798 if (!h
->scatter_list
)
4801 for (i
= 0; i
< h
->nr_cmds
; i
++) {
4802 h
->scatter_list
[i
] = kmalloc(sizeof(struct scatterlist
) *
4803 h
->maxsgentries
, GFP_KERNEL
);
4804 if (h
->scatter_list
[i
] == NULL
) {
4805 dev_err(&h
->pdev
->dev
, "could not allocate "
4813 static void cciss_free_scatterlists(ctlr_info_t
*h
)
4817 if (h
->scatter_list
) {
4818 for (i
= 0; i
< h
->nr_cmds
; i
++)
4819 kfree(h
->scatter_list
[i
]);
4820 kfree(h
->scatter_list
);
4824 static void cciss_free_cmd_pool(ctlr_info_t
*h
)
4826 kfree(h
->cmd_pool_bits
);
4828 pci_free_consistent(h
->pdev
,
4829 h
->nr_cmds
* sizeof(CommandList_struct
),
4830 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4831 if (h
->errinfo_pool
)
4832 pci_free_consistent(h
->pdev
,
4833 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4834 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4837 static int cciss_request_irq(ctlr_info_t
*h
,
4838 irqreturn_t (*msixhandler
)(int, void *),
4839 irqreturn_t (*intxhandler
)(int, void *))
4841 if (h
->msix_vector
|| h
->msi_vector
) {
4842 if (!request_irq(h
->intr
[PERF_MODE_INT
], msixhandler
,
4843 IRQF_DISABLED
, h
->devname
, h
))
4845 dev_err(&h
->pdev
->dev
, "Unable to get msi irq %d"
4846 " for %s\n", h
->intr
[PERF_MODE_INT
],
4851 if (!request_irq(h
->intr
[PERF_MODE_INT
], intxhandler
,
4852 IRQF_DISABLED
, h
->devname
, h
))
4854 dev_err(&h
->pdev
->dev
, "Unable to get irq %d for %s\n",
4855 h
->intr
[PERF_MODE_INT
], h
->devname
);
4859 static int __devinit
cciss_kdump_soft_reset(ctlr_info_t
*h
)
4861 if (cciss_send_reset(h
, CTLR_LUNID
, CCISS_RESET_TYPE_CONTROLLER
)) {
4862 dev_warn(&h
->pdev
->dev
, "Resetting array controller failed.\n");
4866 dev_info(&h
->pdev
->dev
, "Waiting for board to soft reset.\n");
4867 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_NOT_READY
)) {
4868 dev_warn(&h
->pdev
->dev
, "Soft reset had no effect.\n");
4872 dev_info(&h
->pdev
->dev
, "Board reset, awaiting READY status.\n");
4873 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
)) {
4874 dev_warn(&h
->pdev
->dev
, "Board failed to become ready "
4875 "after soft reset.\n");
4882 static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t
*h
)
4886 free_irq(h
->intr
[PERF_MODE_INT
], h
);
4887 #ifdef CONFIG_PCI_MSI
4889 pci_disable_msix(h
->pdev
);
4890 else if (h
->msi_vector
)
4891 pci_disable_msi(h
->pdev
);
4892 #endif /* CONFIG_PCI_MSI */
4893 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
4894 cciss_free_scatterlists(h
);
4895 cciss_free_cmd_pool(h
);
4896 kfree(h
->blockFetchTable
);
4898 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
4899 h
->reply_pool
, h
->reply_pool_dhandle
);
4901 iounmap(h
->transtable
);
4903 iounmap(h
->cfgtable
);
4906 unregister_blkdev(h
->major
, h
->devname
);
4907 cciss_destroy_hba_sysfs_entry(h
);
4908 pci_release_regions(h
->pdev
);
4914 * This is it. Find all the controllers and register them. I really hate
4915 * stealing all these major device numbers.
4916 * returns the number of block devices registered.
4918 static int __devinit
cciss_init_one(struct pci_dev
*pdev
,
4919 const struct pci_device_id
*ent
)
4924 int try_soft_reset
= 0;
4925 int dac
, return_code
;
4926 InquiryData_struct
*inq_buff
;
4928 unsigned long flags
;
4930 rc
= cciss_init_reset_devices(pdev
);
4932 if (rc
!= -ENOTSUPP
)
4934 /* If the reset fails in a particular way (it has no way to do
4935 * a proper hard reset, so returns -ENOTSUPP) we can try to do
4936 * a soft reset once we get the controller configured up to the
4937 * point that it can accept a command.
4943 reinit_after_soft_reset
:
4945 i
= alloc_cciss_hba(pdev
);
4951 h
->busy_initializing
= 1;
4952 INIT_LIST_HEAD(&h
->cmpQ
);
4953 INIT_LIST_HEAD(&h
->reqQ
);
4954 mutex_init(&h
->busy_shutting_down
);
4956 if (cciss_pci_init(h
) != 0)
4957 goto clean_no_release_regions
;
4959 sprintf(h
->devname
, "cciss%d", i
);
4962 init_completion(&h
->scan_wait
);
4964 if (cciss_create_hba_sysfs_entry(h
))
4967 /* configure PCI DMA stuff */
4968 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)))
4970 else if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)))
4973 dev_err(&h
->pdev
->dev
, "no suitable DMA available\n");
4978 * register with the major number, or get a dynamic major number
4979 * by passing 0 as argument. This is done for greater than
4980 * 8 controller support.
4982 if (i
< MAX_CTLR_ORIG
)
4983 h
->major
= COMPAQ_CISS_MAJOR
+ i
;
4984 rc
= register_blkdev(h
->major
, h
->devname
);
4985 if (rc
== -EBUSY
|| rc
== -EINVAL
) {
4986 dev_err(&h
->pdev
->dev
,
4987 "Unable to get major number %d for %s "
4988 "on hba %d\n", h
->major
, h
->devname
, i
);
4991 if (i
>= MAX_CTLR_ORIG
)
4995 /* make sure the board interrupts are off */
4996 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
4997 rc
= cciss_request_irq(h
, do_cciss_msix_intr
, do_cciss_intx
);
5001 dev_info(&h
->pdev
->dev
, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
5002 h
->devname
, pdev
->device
, pci_name(pdev
),
5003 h
->intr
[PERF_MODE_INT
], dac
? "" : " not");
5005 if (cciss_allocate_cmd_pool(h
))
5008 if (cciss_allocate_scatterlists(h
))
5011 h
->cmd_sg_list
= cciss_allocate_sg_chain_blocks(h
,
5012 h
->chainsize
, h
->nr_cmds
);
5013 if (!h
->cmd_sg_list
&& h
->chainsize
> 0)
5016 spin_lock_init(&h
->lock
);
5018 /* Initialize the pdev driver private data.
5019 have it point to h. */
5020 pci_set_drvdata(pdev
, h
);
5021 /* command and error info recs zeroed out before
5023 memset(h
->cmd_pool_bits
, 0,
5024 DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
)
5025 * sizeof(unsigned long));
5028 h
->highest_lun
= -1;
5029 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
5031 h
->gendisk
[j
] = NULL
;
5034 /* At this point, the controller is ready to take commands.
5035 * Now, if reset_devices and the hard reset didn't work, try
5036 * the soft reset and see if that works.
5038 if (try_soft_reset
) {
5040 /* This is kind of gross. We may or may not get a completion
5041 * from the soft reset command, and if we do, then the value
5042 * from the fifo may or may not be valid. So, we wait 10 secs
5043 * after the reset throwing away any completions we get during
5044 * that time. Unregister the interrupt handler and register
5045 * fake ones to scoop up any residual completions.
5047 spin_lock_irqsave(&h
->lock
, flags
);
5048 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5049 spin_unlock_irqrestore(&h
->lock
, flags
);
5050 free_irq(h
->intr
[PERF_MODE_INT
], h
);
5051 rc
= cciss_request_irq(h
, cciss_msix_discard_completions
,
5052 cciss_intx_discard_completions
);
5054 dev_warn(&h
->pdev
->dev
, "Failed to request_irq after "
5059 rc
= cciss_kdump_soft_reset(h
);
5061 dev_warn(&h
->pdev
->dev
, "Soft reset failed.\n");
5065 dev_info(&h
->pdev
->dev
, "Board READY.\n");
5066 dev_info(&h
->pdev
->dev
,
5067 "Waiting for stale completions to drain.\n");
5068 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5070 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5072 rc
= controller_reset_failed(h
->cfgtable
);
5074 dev_info(&h
->pdev
->dev
,
5075 "Soft reset appears to have failed.\n");
5077 /* since the controller's reset, we have to go back and re-init
5078 * everything. Easiest to just forget what we've done and do it
5081 cciss_undo_allocations_after_kdump_soft_reset(h
);
5084 /* don't go to clean4, we already unallocated */
5087 goto reinit_after_soft_reset
;
5090 cciss_scsi_setup(h
);
5092 /* Turn the interrupts on so we can service requests */
5093 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5095 /* Get the firmware version */
5096 inq_buff
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
5097 if (inq_buff
== NULL
) {
5098 dev_err(&h
->pdev
->dev
, "out of memory\n");
5102 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
5103 sizeof(InquiryData_struct
), 0, CTLR_LUNID
, TYPE_CMD
);
5104 if (return_code
== IO_OK
) {
5105 h
->firm_ver
[0] = inq_buff
->data_byte
[32];
5106 h
->firm_ver
[1] = inq_buff
->data_byte
[33];
5107 h
->firm_ver
[2] = inq_buff
->data_byte
[34];
5108 h
->firm_ver
[3] = inq_buff
->data_byte
[35];
5109 } else { /* send command failed */
5110 dev_warn(&h
->pdev
->dev
, "unable to determine firmware"
5111 " version of controller\n");
5117 h
->cciss_max_sectors
= 8192;
5119 rebuild_lun_table(h
, 1, 0);
5120 h
->busy_initializing
= 0;
5124 cciss_free_cmd_pool(h
);
5125 cciss_free_scatterlists(h
);
5126 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5127 free_irq(h
->intr
[PERF_MODE_INT
], h
);
5129 unregister_blkdev(h
->major
, h
->devname
);
5131 cciss_destroy_hba_sysfs_entry(h
);
5133 pci_release_regions(pdev
);
5134 clean_no_release_regions
:
5135 h
->busy_initializing
= 0;
5138 * Deliberately omit pci_disable_device(): it does something nasty to
5139 * Smart Array controllers that pci_enable_device does not undo
5141 pci_set_drvdata(pdev
, NULL
);
5146 static void cciss_shutdown(struct pci_dev
*pdev
)
5152 h
= pci_get_drvdata(pdev
);
5153 flush_buf
= kzalloc(4, GFP_KERNEL
);
5155 dev_warn(&h
->pdev
->dev
, "cache not flushed, out of memory.\n");
5158 /* write all data in the battery backed cache to disk */
5159 memset(flush_buf
, 0, 4);
5160 return_code
= sendcmd_withirq(h
, CCISS_CACHE_FLUSH
, flush_buf
,
5161 4, 0, CTLR_LUNID
, TYPE_CMD
);
5163 if (return_code
!= IO_OK
)
5164 dev_warn(&h
->pdev
->dev
, "Error flushing cache\n");
5165 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5166 free_irq(h
->intr
[PERF_MODE_INT
], h
);
5169 static void __devexit
cciss_remove_one(struct pci_dev
*pdev
)
5174 if (pci_get_drvdata(pdev
) == NULL
) {
5175 dev_err(&pdev
->dev
, "Unable to remove device\n");
5179 h
= pci_get_drvdata(pdev
);
5181 if (hba
[i
] == NULL
) {
5182 dev_err(&pdev
->dev
, "device appears to already be removed\n");
5186 mutex_lock(&h
->busy_shutting_down
);
5188 remove_from_scan_list(h
);
5189 remove_proc_entry(h
->devname
, proc_cciss
);
5190 unregister_blkdev(h
->major
, h
->devname
);
5192 /* remove it from the disk list */
5193 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
5194 struct gendisk
*disk
= h
->gendisk
[j
];
5196 struct request_queue
*q
= disk
->queue
;
5198 if (disk
->flags
& GENHD_FL_UP
) {
5199 cciss_destroy_ld_sysfs_entry(h
, j
, 1);
5203 blk_cleanup_queue(q
);
5207 #ifdef CONFIG_CISS_SCSI_TAPE
5208 cciss_unregister_scsi(h
); /* unhook from SCSI subsystem */
5211 cciss_shutdown(pdev
);
5213 #ifdef CONFIG_PCI_MSI
5215 pci_disable_msix(h
->pdev
);
5216 else if (h
->msi_vector
)
5217 pci_disable_msi(h
->pdev
);
5218 #endif /* CONFIG_PCI_MSI */
5220 iounmap(h
->transtable
);
5221 iounmap(h
->cfgtable
);
5224 cciss_free_cmd_pool(h
);
5225 /* Free up sg elements */
5226 for (j
= 0; j
< h
->nr_cmds
; j
++)
5227 kfree(h
->scatter_list
[j
]);
5228 kfree(h
->scatter_list
);
5229 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5230 kfree(h
->blockFetchTable
);
5232 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
5233 h
->reply_pool
, h
->reply_pool_dhandle
);
5235 * Deliberately omit pci_disable_device(): it does something nasty to
5236 * Smart Array controllers that pci_enable_device does not undo
5238 pci_release_regions(pdev
);
5239 pci_set_drvdata(pdev
, NULL
);
5240 cciss_destroy_hba_sysfs_entry(h
);
5241 mutex_unlock(&h
->busy_shutting_down
);
5245 static struct pci_driver cciss_pci_driver
= {
5247 .probe
= cciss_init_one
,
5248 .remove
= __devexit_p(cciss_remove_one
),
5249 .id_table
= cciss_pci_device_id
, /* id_table */
5250 .shutdown
= cciss_shutdown
,
5254 * This is it. Register the PCI driver information for the cards we control
5255 * the OS will call our registered routines when it finds one of our cards.
5257 static int __init
cciss_init(void)
5262 * The hardware requires that commands are aligned on a 64-bit
5263 * boundary. Given that we use pci_alloc_consistent() to allocate an
5264 * array of them, the size must be a multiple of 8 bytes.
5266 BUILD_BUG_ON(sizeof(CommandList_struct
) % COMMANDLIST_ALIGNMENT
);
5267 printk(KERN_INFO DRIVER_NAME
"\n");
5269 err
= bus_register(&cciss_bus_type
);
5273 /* Start the scan thread */
5274 cciss_scan_thread
= kthread_run(scan_thread
, NULL
, "cciss_scan");
5275 if (IS_ERR(cciss_scan_thread
)) {
5276 err
= PTR_ERR(cciss_scan_thread
);
5277 goto err_bus_unregister
;
5280 /* Register for our PCI devices */
5281 err
= pci_register_driver(&cciss_pci_driver
);
5283 goto err_thread_stop
;
5288 kthread_stop(cciss_scan_thread
);
5290 bus_unregister(&cciss_bus_type
);
5295 static void __exit
cciss_cleanup(void)
5299 pci_unregister_driver(&cciss_pci_driver
);
5300 /* double check that all controller entrys have been removed */
5301 for (i
= 0; i
< MAX_CTLR
; i
++) {
5302 if (hba
[i
] != NULL
) {
5303 dev_warn(&hba
[i
]->pdev
->dev
,
5304 "had to remove controller\n");
5305 cciss_remove_one(hba
[i
]->pdev
);
5308 kthread_stop(cciss_scan_thread
);
5310 remove_proc_entry("driver/cciss", NULL
);
5311 bus_unregister(&cciss_bus_type
);
5314 module_init(cciss_init
);
5315 module_exit(cciss_cleanup
);