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/pci-aspm.h>
28 #include <linux/kernel.h>
29 #include <linux/slab.h>
30 #include <linux/delay.h>
31 #include <linux/major.h>
33 #include <linux/bio.h>
34 #include <linux/blkpg.h>
35 #include <linux/timer.h>
36 #include <linux/proc_fs.h>
37 #include <linux/seq_file.h>
38 #include <linux/init.h>
39 #include <linux/jiffies.h>
40 #include <linux/hdreg.h>
41 #include <linux/spinlock.h>
42 #include <linux/compat.h>
43 #include <linux/mutex.h>
44 #include <linux/bitmap.h>
46 #include <linux/uaccess.h>
48 #include <linux/dma-mapping.h>
49 #include <linux/blkdev.h>
50 #include <linux/genhd.h>
51 #include <linux/completion.h>
52 #include <scsi/scsi.h>
54 #include <scsi/scsi_ioctl.h>
55 #include <scsi/scsi_request.h>
56 #include <linux/cdrom.h>
57 #include <linux/scatterlist.h>
58 #include <linux/kthread.h>
60 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
61 #define DRIVER_NAME "HP CISS Driver (v 3.6.26)"
62 #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26)
64 /* Embedded module documentation macros - see modules.h */
65 MODULE_AUTHOR("Hewlett-Packard Company");
66 MODULE_DESCRIPTION("Driver for HP Smart Array Controllers");
67 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
68 MODULE_VERSION("3.6.26");
69 MODULE_LICENSE("GPL");
70 static int cciss_tape_cmds
= 6;
71 module_param(cciss_tape_cmds
, int, 0644);
72 MODULE_PARM_DESC(cciss_tape_cmds
,
73 "number of commands to allocate for tape devices (default: 6)");
74 static int cciss_simple_mode
;
75 module_param(cciss_simple_mode
, int, S_IRUGO
|S_IWUSR
);
76 MODULE_PARM_DESC(cciss_simple_mode
,
77 "Use 'simple mode' rather than 'performant mode'");
79 static int cciss_allow_hpsa
;
80 module_param(cciss_allow_hpsa
, int, S_IRUGO
|S_IWUSR
);
81 MODULE_PARM_DESC(cciss_allow_hpsa
,
82 "Prevent cciss driver from accessing hardware known to be "
83 " supported by the hpsa driver");
85 static DEFINE_MUTEX(cciss_mutex
);
86 static struct proc_dir_entry
*proc_cciss
;
88 #include "cciss_cmd.h"
90 #include <linux/cciss_ioctl.h>
92 /* define the PCI info for the cards we can control */
93 static const struct pci_device_id cciss_pci_device_id
[] = {
94 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISS
, 0x0E11, 0x4070},
95 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4080},
96 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4082},
97 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4083},
98 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x4091},
99 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409A},
100 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409B},
101 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409C},
102 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409D},
103 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSA
, 0x103C, 0x3225},
104 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3223},
105 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3234},
106 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3235},
107 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3211},
108 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3212},
109 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3213},
110 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3214},
111 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3215},
112 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3237},
113 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x323D},
117 MODULE_DEVICE_TABLE(pci
, cciss_pci_device_id
);
119 /* board_id = Subsystem Device ID & Vendor ID
120 * product = Marketing Name for the board
121 * access = Address of the struct of function pointers
123 static struct board_type products
[] = {
124 {0x40700E11, "Smart Array 5300", &SA5_access
},
125 {0x40800E11, "Smart Array 5i", &SA5B_access
},
126 {0x40820E11, "Smart Array 532", &SA5B_access
},
127 {0x40830E11, "Smart Array 5312", &SA5B_access
},
128 {0x409A0E11, "Smart Array 641", &SA5_access
},
129 {0x409B0E11, "Smart Array 642", &SA5_access
},
130 {0x409C0E11, "Smart Array 6400", &SA5_access
},
131 {0x409D0E11, "Smart Array 6400 EM", &SA5_access
},
132 {0x40910E11, "Smart Array 6i", &SA5_access
},
133 {0x3225103C, "Smart Array P600", &SA5_access
},
134 {0x3223103C, "Smart Array P800", &SA5_access
},
135 {0x3234103C, "Smart Array P400", &SA5_access
},
136 {0x3235103C, "Smart Array P400i", &SA5_access
},
137 {0x3211103C, "Smart Array E200i", &SA5_access
},
138 {0x3212103C, "Smart Array E200", &SA5_access
},
139 {0x3213103C, "Smart Array E200i", &SA5_access
},
140 {0x3214103C, "Smart Array E200i", &SA5_access
},
141 {0x3215103C, "Smart Array E200i", &SA5_access
},
142 {0x3237103C, "Smart Array E500", &SA5_access
},
143 {0x323D103C, "Smart Array P700m", &SA5_access
},
146 /* How long to wait (in milliseconds) for board to go into simple mode */
147 #define MAX_CONFIG_WAIT 30000
148 #define MAX_IOCTL_CONFIG_WAIT 1000
150 /*define how many times we will try a command because of bus resets */
151 #define MAX_CMD_RETRIES 3
155 /* Originally cciss driver only supports 8 major numbers */
156 #define MAX_CTLR_ORIG 8
158 static ctlr_info_t
*hba
[MAX_CTLR
];
160 static struct task_struct
*cciss_scan_thread
;
161 static DEFINE_MUTEX(scan_mutex
);
162 static LIST_HEAD(scan_q
);
164 static void do_cciss_request(struct request_queue
*q
);
165 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
);
166 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
);
167 static int cciss_open(struct block_device
*bdev
, fmode_t mode
);
168 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
);
169 static void cciss_release(struct gendisk
*disk
, fmode_t mode
);
170 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
171 unsigned int cmd
, unsigned long arg
);
172 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
);
174 static int cciss_revalidate(struct gendisk
*disk
);
175 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
, int via_ioctl
);
176 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
177 int clear_all
, int via_ioctl
);
179 static void cciss_read_capacity(ctlr_info_t
*h
, int logvol
,
180 sector_t
*total_size
, unsigned int *block_size
);
181 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
182 sector_t
*total_size
, unsigned int *block_size
);
183 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
185 unsigned int block_size
, InquiryData_struct
*inq_buff
,
186 drive_info_struct
*drv
);
187 static void cciss_interrupt_mode(ctlr_info_t
*);
188 static int cciss_enter_simple_mode(struct ctlr_info
*h
);
189 static void start_io(ctlr_info_t
*h
);
190 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
191 __u8 page_code
, unsigned char scsi3addr
[],
193 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
195 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
);
197 static int add_to_scan_list(struct ctlr_info
*h
);
198 static int scan_thread(void *data
);
199 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
);
200 static void cciss_hba_release(struct device
*dev
);
201 static void cciss_device_release(struct device
*dev
);
202 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
);
203 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
);
204 static inline u32
next_command(ctlr_info_t
*h
);
205 static int cciss_find_cfg_addrs(struct pci_dev
*pdev
, void __iomem
*vaddr
,
206 u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
208 static int cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
209 unsigned long *memory_bar
);
210 static inline u32
cciss_tag_discard_error_bits(ctlr_info_t
*h
, u32 tag
);
211 static int write_driver_ver_to_cfgtable(CfgTable_struct __iomem
*cfgtable
);
213 /* performant mode helper functions */
214 static void calc_bucket_map(int *bucket
, int num_buckets
, int nsgs
,
216 static void cciss_put_controller_into_performant_mode(ctlr_info_t
*h
);
218 #ifdef CONFIG_PROC_FS
219 static void cciss_procinit(ctlr_info_t
*h
);
221 static void cciss_procinit(ctlr_info_t
*h
)
224 #endif /* CONFIG_PROC_FS */
227 static int cciss_compat_ioctl(struct block_device
*, fmode_t
,
228 unsigned, unsigned long);
231 static const struct block_device_operations cciss_fops
= {
232 .owner
= THIS_MODULE
,
233 .open
= cciss_unlocked_open
,
234 .release
= cciss_release
,
235 .ioctl
= cciss_ioctl
,
236 .getgeo
= cciss_getgeo
,
238 .compat_ioctl
= cciss_compat_ioctl
,
240 .revalidate_disk
= cciss_revalidate
,
243 /* set_performant_mode: Modify the tag for cciss performant
244 * set bit 0 for pull model, bits 3-1 for block fetch
247 static void set_performant_mode(ctlr_info_t
*h
, CommandList_struct
*c
)
249 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
250 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
254 * Enqueuing and dequeuing functions for cmdlists.
256 static inline void addQ(struct list_head
*list
, CommandList_struct
*c
)
258 list_add_tail(&c
->list
, list
);
261 static inline void removeQ(CommandList_struct
*c
)
264 * After kexec/dump some commands might still
265 * be in flight, which the firmware will try
266 * to complete. Resetting the firmware doesn't work
267 * with old fw revisions, so we have to mark
268 * them off as 'stale' to prevent the driver from
271 if (WARN_ON(list_empty(&c
->list
))) {
272 c
->cmd_type
= CMD_MSG_STALE
;
276 list_del_init(&c
->list
);
279 static void enqueue_cmd_and_start_io(ctlr_info_t
*h
,
280 CommandList_struct
*c
)
283 set_performant_mode(h
, c
);
284 spin_lock_irqsave(&h
->lock
, flags
);
287 if (h
->Qdepth
> h
->maxQsinceinit
)
288 h
->maxQsinceinit
= h
->Qdepth
;
290 spin_unlock_irqrestore(&h
->lock
, flags
);
293 static void cciss_free_sg_chain_blocks(SGDescriptor_struct
**cmd_sg_list
,
300 for (i
= 0; i
< nr_cmds
; i
++) {
301 kfree(cmd_sg_list
[i
]);
302 cmd_sg_list
[i
] = NULL
;
307 static SGDescriptor_struct
**cciss_allocate_sg_chain_blocks(
308 ctlr_info_t
*h
, int chainsize
, int nr_cmds
)
311 SGDescriptor_struct
**cmd_sg_list
;
316 cmd_sg_list
= kmalloc(sizeof(*cmd_sg_list
) * nr_cmds
, GFP_KERNEL
);
320 /* Build up chain blocks for each command */
321 for (j
= 0; j
< nr_cmds
; j
++) {
322 /* Need a block of chainsized s/g elements. */
323 cmd_sg_list
[j
] = kmalloc((chainsize
*
324 sizeof(*cmd_sg_list
[j
])), GFP_KERNEL
);
325 if (!cmd_sg_list
[j
]) {
326 dev_err(&h
->pdev
->dev
, "Cannot get memory "
327 "for s/g chains.\n");
333 cciss_free_sg_chain_blocks(cmd_sg_list
, nr_cmds
);
337 static void cciss_unmap_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
)
339 SGDescriptor_struct
*chain_sg
;
342 if (c
->Header
.SGTotal
<= h
->max_cmd_sgentries
)
345 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
346 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
347 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
348 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
351 static int cciss_map_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
,
352 SGDescriptor_struct
*chain_block
, int len
)
354 SGDescriptor_struct
*chain_sg
;
357 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
358 chain_sg
->Ext
= CCISS_SG_CHAIN
;
360 temp64
.val
= pci_map_single(h
->pdev
, chain_block
, len
,
362 if (dma_mapping_error(&h
->pdev
->dev
, temp64
.val
)) {
363 dev_warn(&h
->pdev
->dev
,
364 "%s: error mapping chain block for DMA\n",
368 chain_sg
->Addr
.lower
= temp64
.val32
.lower
;
369 chain_sg
->Addr
.upper
= temp64
.val32
.upper
;
374 #include "cciss_scsi.c" /* For SCSI tape support */
376 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
379 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1)
381 #ifdef CONFIG_PROC_FS
384 * Report information about this controller.
386 #define ENG_GIG 1000000000
387 #define ENG_GIG_FACTOR (ENG_GIG/512)
388 #define ENGAGE_SCSI "engage scsi"
390 static void cciss_seq_show_header(struct seq_file
*seq
)
392 ctlr_info_t
*h
= seq
->private;
394 seq_printf(seq
, "%s: HP %s Controller\n"
395 "Board ID: 0x%08lx\n"
396 "Firmware Version: %c%c%c%c\n"
398 "Logical drives: %d\n"
399 "Current Q depth: %d\n"
400 "Current # commands on controller: %d\n"
401 "Max Q depth since init: %d\n"
402 "Max # commands on controller since init: %d\n"
403 "Max SG entries since init: %d\n",
406 (unsigned long)h
->board_id
,
407 h
->firm_ver
[0], h
->firm_ver
[1], h
->firm_ver
[2],
408 h
->firm_ver
[3], (unsigned int)h
->intr
[h
->intr_mode
],
410 h
->Qdepth
, h
->commands_outstanding
,
411 h
->maxQsinceinit
, h
->max_outstanding
, h
->maxSG
);
413 #ifdef CONFIG_CISS_SCSI_TAPE
414 cciss_seq_tape_report(seq
, h
);
415 #endif /* CONFIG_CISS_SCSI_TAPE */
418 static void *cciss_seq_start(struct seq_file
*seq
, loff_t
*pos
)
420 ctlr_info_t
*h
= seq
->private;
423 /* prevent displaying bogus info during configuration
424 * or deconfiguration of a logical volume
426 spin_lock_irqsave(&h
->lock
, flags
);
427 if (h
->busy_configuring
) {
428 spin_unlock_irqrestore(&h
->lock
, flags
);
429 return ERR_PTR(-EBUSY
);
431 h
->busy_configuring
= 1;
432 spin_unlock_irqrestore(&h
->lock
, flags
);
435 cciss_seq_show_header(seq
);
440 static int cciss_seq_show(struct seq_file
*seq
, void *v
)
442 sector_t vol_sz
, vol_sz_frac
;
443 ctlr_info_t
*h
= seq
->private;
444 unsigned ctlr
= h
->ctlr
;
446 drive_info_struct
*drv
= h
->drv
[*pos
];
448 if (*pos
> h
->highest_lun
)
451 if (drv
== NULL
) /* it's possible for h->drv[] to have holes. */
457 vol_sz
= drv
->nr_blocks
;
458 vol_sz_frac
= sector_div(vol_sz
, ENG_GIG_FACTOR
);
460 sector_div(vol_sz_frac
, ENG_GIG_FACTOR
);
462 if (drv
->raid_level
< 0 || drv
->raid_level
> RAID_UNKNOWN
)
463 drv
->raid_level
= RAID_UNKNOWN
;
464 seq_printf(seq
, "cciss/c%dd%d:"
465 "\t%4u.%02uGB\tRAID %s\n",
466 ctlr
, (int) *pos
, (int)vol_sz
, (int)vol_sz_frac
,
467 raid_label
[drv
->raid_level
]);
471 static void *cciss_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
473 ctlr_info_t
*h
= seq
->private;
475 if (*pos
> h
->highest_lun
)
482 static void cciss_seq_stop(struct seq_file
*seq
, void *v
)
484 ctlr_info_t
*h
= seq
->private;
486 /* Only reset h->busy_configuring if we succeeded in setting
487 * it during cciss_seq_start. */
488 if (v
== ERR_PTR(-EBUSY
))
491 h
->busy_configuring
= 0;
494 static const struct seq_operations cciss_seq_ops
= {
495 .start
= cciss_seq_start
,
496 .show
= cciss_seq_show
,
497 .next
= cciss_seq_next
,
498 .stop
= cciss_seq_stop
,
501 static int cciss_seq_open(struct inode
*inode
, struct file
*file
)
503 int ret
= seq_open(file
, &cciss_seq_ops
);
504 struct seq_file
*seq
= file
->private_data
;
507 seq
->private = PDE_DATA(inode
);
513 cciss_proc_write(struct file
*file
, const char __user
*buf
,
514 size_t length
, loff_t
*ppos
)
519 #ifndef CONFIG_CISS_SCSI_TAPE
523 if (!buf
|| length
> PAGE_SIZE
- 1)
526 buffer
= memdup_user_nul(buf
, length
);
528 return PTR_ERR(buffer
);
530 #ifdef CONFIG_CISS_SCSI_TAPE
531 if (strncmp(ENGAGE_SCSI
, buffer
, sizeof ENGAGE_SCSI
- 1) == 0) {
532 struct seq_file
*seq
= file
->private_data
;
533 ctlr_info_t
*h
= seq
->private;
535 err
= cciss_engage_scsi(h
);
539 #endif /* CONFIG_CISS_SCSI_TAPE */
541 /* might be nice to have "disengage" too, but it's not
542 safely possible. (only 1 module use count, lock issues.) */
548 static const struct file_operations cciss_proc_fops
= {
549 .owner
= THIS_MODULE
,
550 .open
= cciss_seq_open
,
553 .release
= seq_release
,
554 .write
= cciss_proc_write
,
557 static void cciss_procinit(ctlr_info_t
*h
)
559 struct proc_dir_entry
*pde
;
561 if (proc_cciss
== NULL
)
562 proc_cciss
= proc_mkdir("driver/cciss", NULL
);
565 pde
= proc_create_data(h
->devname
, S_IWUSR
| S_IRUSR
| S_IRGRP
|
567 &cciss_proc_fops
, h
);
569 #endif /* CONFIG_PROC_FS */
571 #define MAX_PRODUCT_NAME_LEN 19
573 #define to_hba(n) container_of(n, struct ctlr_info, dev)
574 #define to_drv(n) container_of(n, drive_info_struct, dev)
576 /* List of controllers which cannot be hard reset on kexec with reset_devices */
577 static u32 unresettable_controller
[] = {
578 0x3223103C, /* Smart Array P800 */
579 0x3234103C, /* Smart Array P400 */
580 0x3235103C, /* Smart Array P400i */
581 0x3211103C, /* Smart Array E200i */
582 0x3212103C, /* Smart Array E200 */
583 0x3213103C, /* Smart Array E200i */
584 0x3214103C, /* Smart Array E200i */
585 0x3215103C, /* Smart Array E200i */
586 0x3237103C, /* Smart Array E500 */
587 0x323D103C, /* Smart Array P700m */
588 0x40800E11, /* Smart Array 5i */
589 0x409C0E11, /* Smart Array 6400 */
590 0x409D0E11, /* Smart Array 6400 EM */
591 0x40700E11, /* Smart Array 5300 */
592 0x40820E11, /* Smart Array 532 */
593 0x40830E11, /* Smart Array 5312 */
594 0x409A0E11, /* Smart Array 641 */
595 0x409B0E11, /* Smart Array 642 */
596 0x40910E11, /* Smart Array 6i */
599 /* List of controllers which cannot even be soft reset */
600 static u32 soft_unresettable_controller
[] = {
601 0x40800E11, /* Smart Array 5i */
602 0x40700E11, /* Smart Array 5300 */
603 0x40820E11, /* Smart Array 532 */
604 0x40830E11, /* Smart Array 5312 */
605 0x409A0E11, /* Smart Array 641 */
606 0x409B0E11, /* Smart Array 642 */
607 0x40910E11, /* Smart Array 6i */
608 /* Exclude 640x boards. These are two pci devices in one slot
609 * which share a battery backed cache module. One controls the
610 * cache, the other accesses the cache through the one that controls
611 * it. If we reset the one controlling the cache, the other will
612 * likely not be happy. Just forbid resetting this conjoined mess.
614 0x409C0E11, /* Smart Array 6400 */
615 0x409D0E11, /* Smart Array 6400 EM */
618 static int ctlr_is_hard_resettable(u32 board_id
)
622 for (i
= 0; i
< ARRAY_SIZE(unresettable_controller
); i
++)
623 if (unresettable_controller
[i
] == board_id
)
628 static int ctlr_is_soft_resettable(u32 board_id
)
632 for (i
= 0; i
< ARRAY_SIZE(soft_unresettable_controller
); i
++)
633 if (soft_unresettable_controller
[i
] == board_id
)
638 static int ctlr_is_resettable(u32 board_id
)
640 return ctlr_is_hard_resettable(board_id
) ||
641 ctlr_is_soft_resettable(board_id
);
644 static ssize_t
host_show_resettable(struct device
*dev
,
645 struct device_attribute
*attr
,
648 struct ctlr_info
*h
= to_hba(dev
);
650 return snprintf(buf
, 20, "%d\n", ctlr_is_resettable(h
->board_id
));
652 static DEVICE_ATTR(resettable
, S_IRUGO
, host_show_resettable
, NULL
);
654 static ssize_t
host_store_rescan(struct device
*dev
,
655 struct device_attribute
*attr
,
656 const char *buf
, size_t count
)
658 struct ctlr_info
*h
= to_hba(dev
);
661 wake_up_process(cciss_scan_thread
);
662 wait_for_completion_interruptible(&h
->scan_wait
);
666 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
668 static ssize_t
host_show_transport_mode(struct device
*dev
,
669 struct device_attribute
*attr
,
672 struct ctlr_info
*h
= to_hba(dev
);
674 return snprintf(buf
, 20, "%s\n",
675 h
->transMethod
& CFGTBL_Trans_Performant
?
676 "performant" : "simple");
678 static DEVICE_ATTR(transport_mode
, S_IRUGO
, host_show_transport_mode
, NULL
);
680 static ssize_t
dev_show_unique_id(struct device
*dev
,
681 struct device_attribute
*attr
,
684 drive_info_struct
*drv
= to_drv(dev
);
685 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
690 spin_lock_irqsave(&h
->lock
, flags
);
691 if (h
->busy_configuring
)
694 memcpy(sn
, drv
->serial_no
, sizeof(sn
));
695 spin_unlock_irqrestore(&h
->lock
, flags
);
700 return snprintf(buf
, 16 * 2 + 2,
701 "%02X%02X%02X%02X%02X%02X%02X%02X"
702 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
703 sn
[0], sn
[1], sn
[2], sn
[3],
704 sn
[4], sn
[5], sn
[6], sn
[7],
705 sn
[8], sn
[9], sn
[10], sn
[11],
706 sn
[12], sn
[13], sn
[14], sn
[15]);
708 static DEVICE_ATTR(unique_id
, S_IRUGO
, dev_show_unique_id
, NULL
);
710 static ssize_t
dev_show_vendor(struct device
*dev
,
711 struct device_attribute
*attr
,
714 drive_info_struct
*drv
= to_drv(dev
);
715 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
716 char vendor
[VENDOR_LEN
+ 1];
720 spin_lock_irqsave(&h
->lock
, flags
);
721 if (h
->busy_configuring
)
724 memcpy(vendor
, drv
->vendor
, VENDOR_LEN
+ 1);
725 spin_unlock_irqrestore(&h
->lock
, flags
);
730 return snprintf(buf
, sizeof(vendor
) + 1, "%s\n", drv
->vendor
);
732 static DEVICE_ATTR(vendor
, S_IRUGO
, dev_show_vendor
, NULL
);
734 static ssize_t
dev_show_model(struct device
*dev
,
735 struct device_attribute
*attr
,
738 drive_info_struct
*drv
= to_drv(dev
);
739 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
740 char model
[MODEL_LEN
+ 1];
744 spin_lock_irqsave(&h
->lock
, flags
);
745 if (h
->busy_configuring
)
748 memcpy(model
, drv
->model
, MODEL_LEN
+ 1);
749 spin_unlock_irqrestore(&h
->lock
, flags
);
754 return snprintf(buf
, sizeof(model
) + 1, "%s\n", drv
->model
);
756 static DEVICE_ATTR(model
, S_IRUGO
, dev_show_model
, NULL
);
758 static ssize_t
dev_show_rev(struct device
*dev
,
759 struct device_attribute
*attr
,
762 drive_info_struct
*drv
= to_drv(dev
);
763 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
764 char rev
[REV_LEN
+ 1];
768 spin_lock_irqsave(&h
->lock
, flags
);
769 if (h
->busy_configuring
)
772 memcpy(rev
, drv
->rev
, REV_LEN
+ 1);
773 spin_unlock_irqrestore(&h
->lock
, flags
);
778 return snprintf(buf
, sizeof(rev
) + 1, "%s\n", drv
->rev
);
780 static DEVICE_ATTR(rev
, S_IRUGO
, dev_show_rev
, NULL
);
782 static ssize_t
cciss_show_lunid(struct device
*dev
,
783 struct device_attribute
*attr
, char *buf
)
785 drive_info_struct
*drv
= to_drv(dev
);
786 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
788 unsigned char lunid
[8];
790 spin_lock_irqsave(&h
->lock
, flags
);
791 if (h
->busy_configuring
) {
792 spin_unlock_irqrestore(&h
->lock
, flags
);
796 spin_unlock_irqrestore(&h
->lock
, flags
);
799 memcpy(lunid
, drv
->LunID
, sizeof(lunid
));
800 spin_unlock_irqrestore(&h
->lock
, flags
);
801 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
802 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
803 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
805 static DEVICE_ATTR(lunid
, S_IRUGO
, cciss_show_lunid
, NULL
);
807 static ssize_t
cciss_show_raid_level(struct device
*dev
,
808 struct device_attribute
*attr
, char *buf
)
810 drive_info_struct
*drv
= to_drv(dev
);
811 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
815 spin_lock_irqsave(&h
->lock
, flags
);
816 if (h
->busy_configuring
) {
817 spin_unlock_irqrestore(&h
->lock
, flags
);
820 raid
= drv
->raid_level
;
821 spin_unlock_irqrestore(&h
->lock
, flags
);
822 if (raid
< 0 || raid
> RAID_UNKNOWN
)
825 return snprintf(buf
, strlen(raid_label
[raid
]) + 7, "RAID %s\n",
828 static DEVICE_ATTR(raid_level
, S_IRUGO
, cciss_show_raid_level
, NULL
);
830 static ssize_t
cciss_show_usage_count(struct device
*dev
,
831 struct device_attribute
*attr
, char *buf
)
833 drive_info_struct
*drv
= to_drv(dev
);
834 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
838 spin_lock_irqsave(&h
->lock
, flags
);
839 if (h
->busy_configuring
) {
840 spin_unlock_irqrestore(&h
->lock
, flags
);
843 count
= drv
->usage_count
;
844 spin_unlock_irqrestore(&h
->lock
, flags
);
845 return snprintf(buf
, 20, "%d\n", count
);
847 static DEVICE_ATTR(usage_count
, S_IRUGO
, cciss_show_usage_count
, NULL
);
849 static struct attribute
*cciss_host_attrs
[] = {
850 &dev_attr_rescan
.attr
,
851 &dev_attr_resettable
.attr
,
852 &dev_attr_transport_mode
.attr
,
856 static struct attribute_group cciss_host_attr_group
= {
857 .attrs
= cciss_host_attrs
,
860 static const struct attribute_group
*cciss_host_attr_groups
[] = {
861 &cciss_host_attr_group
,
865 static struct device_type cciss_host_type
= {
866 .name
= "cciss_host",
867 .groups
= cciss_host_attr_groups
,
868 .release
= cciss_hba_release
,
871 static struct attribute
*cciss_dev_attrs
[] = {
872 &dev_attr_unique_id
.attr
,
873 &dev_attr_model
.attr
,
874 &dev_attr_vendor
.attr
,
876 &dev_attr_lunid
.attr
,
877 &dev_attr_raid_level
.attr
,
878 &dev_attr_usage_count
.attr
,
882 static struct attribute_group cciss_dev_attr_group
= {
883 .attrs
= cciss_dev_attrs
,
886 static const struct attribute_group
*cciss_dev_attr_groups
[] = {
887 &cciss_dev_attr_group
,
891 static struct device_type cciss_dev_type
= {
892 .name
= "cciss_device",
893 .groups
= cciss_dev_attr_groups
,
894 .release
= cciss_device_release
,
897 static struct bus_type cciss_bus_type
= {
902 * cciss_hba_release is called when the reference count
903 * of h->dev goes to zero.
905 static void cciss_hba_release(struct device
*dev
)
908 * nothing to do, but need this to avoid a warning
909 * about not having a release handler from lib/kref.c.
914 * Initialize sysfs entry for each controller. This sets up and registers
915 * the 'cciss#' directory for each individual controller under
916 * /sys/bus/pci/devices/<dev>/.
918 static int cciss_create_hba_sysfs_entry(struct ctlr_info
*h
)
920 device_initialize(&h
->dev
);
921 h
->dev
.type
= &cciss_host_type
;
922 h
->dev
.bus
= &cciss_bus_type
;
923 dev_set_name(&h
->dev
, "%s", h
->devname
);
924 h
->dev
.parent
= &h
->pdev
->dev
;
926 return device_add(&h
->dev
);
930 * Remove sysfs entries for an hba.
932 static void cciss_destroy_hba_sysfs_entry(struct ctlr_info
*h
)
935 put_device(&h
->dev
); /* final put. */
938 /* cciss_device_release is called when the reference count
939 * of h->drv[x]dev goes to zero.
941 static void cciss_device_release(struct device
*dev
)
943 drive_info_struct
*drv
= to_drv(dev
);
948 * Initialize sysfs for each logical drive. This sets up and registers
949 * the 'c#d#' directory for each individual logical drive under
950 * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from
951 * /sys/block/cciss!c#d# to this entry.
953 static long cciss_create_ld_sysfs_entry(struct ctlr_info
*h
,
958 if (h
->drv
[drv_index
]->device_initialized
)
961 dev
= &h
->drv
[drv_index
]->dev
;
962 device_initialize(dev
);
963 dev
->type
= &cciss_dev_type
;
964 dev
->bus
= &cciss_bus_type
;
965 dev_set_name(dev
, "c%dd%d", h
->ctlr
, drv_index
);
966 dev
->parent
= &h
->dev
;
967 h
->drv
[drv_index
]->device_initialized
= 1;
968 return device_add(dev
);
972 * Remove sysfs entries for a logical drive.
974 static void cciss_destroy_ld_sysfs_entry(struct ctlr_info
*h
, int drv_index
,
977 struct device
*dev
= &h
->drv
[drv_index
]->dev
;
979 /* special case for c*d0, we only destroy it on controller exit */
980 if (drv_index
== 0 && !ctlr_exiting
)
984 put_device(dev
); /* the "final" put. */
985 h
->drv
[drv_index
] = NULL
;
989 * For operations that cannot sleep, a command block is allocated at init,
990 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
991 * which ones are free or in use.
993 static CommandList_struct
*cmd_alloc(ctlr_info_t
*h
)
995 CommandList_struct
*c
;
998 dma_addr_t cmd_dma_handle
, err_dma_handle
;
1001 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
1002 if (i
== h
->nr_cmds
)
1004 } while (test_and_set_bit(i
, h
->cmd_pool_bits
) != 0);
1005 c
= h
->cmd_pool
+ i
;
1006 memset(c
, 0, sizeof(CommandList_struct
));
1007 cmd_dma_handle
= h
->cmd_pool_dhandle
+ i
* sizeof(CommandList_struct
);
1008 c
->err_info
= h
->errinfo_pool
+ i
;
1009 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
1010 err_dma_handle
= h
->errinfo_pool_dhandle
1011 + i
* sizeof(ErrorInfo_struct
);
1016 INIT_LIST_HEAD(&c
->list
);
1017 c
->busaddr
= (__u32
) cmd_dma_handle
;
1018 temp64
.val
= (__u64
) err_dma_handle
;
1019 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
1020 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
1021 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
1027 /* allocate a command using pci_alloc_consistent, used for ioctls,
1028 * etc., not for the main i/o path.
1030 static CommandList_struct
*cmd_special_alloc(ctlr_info_t
*h
)
1032 CommandList_struct
*c
;
1034 dma_addr_t cmd_dma_handle
, err_dma_handle
;
1036 c
= pci_zalloc_consistent(h
->pdev
, sizeof(CommandList_struct
),
1043 c
->err_info
= pci_zalloc_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
1046 if (c
->err_info
== NULL
) {
1047 pci_free_consistent(h
->pdev
,
1048 sizeof(CommandList_struct
), c
, cmd_dma_handle
);
1052 INIT_LIST_HEAD(&c
->list
);
1053 c
->busaddr
= (__u32
) cmd_dma_handle
;
1054 temp64
.val
= (__u64
) err_dma_handle
;
1055 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
1056 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
1057 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
1063 static void cmd_free(ctlr_info_t
*h
, CommandList_struct
*c
)
1067 i
= c
- h
->cmd_pool
;
1068 clear_bit(i
, h
->cmd_pool_bits
);
1072 static void cmd_special_free(ctlr_info_t
*h
, CommandList_struct
*c
)
1076 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
1077 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
1078 pci_free_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
1079 c
->err_info
, (dma_addr_t
) temp64
.val
);
1080 pci_free_consistent(h
->pdev
, sizeof(CommandList_struct
), c
,
1081 (dma_addr_t
) cciss_tag_discard_error_bits(h
, (u32
) c
->busaddr
));
1084 static inline ctlr_info_t
*get_host(struct gendisk
*disk
)
1086 return disk
->queue
->queuedata
;
1089 static inline drive_info_struct
*get_drv(struct gendisk
*disk
)
1091 return disk
->private_data
;
1095 * Open. Make sure the device is really there.
1097 static int cciss_open(struct block_device
*bdev
, fmode_t mode
)
1099 ctlr_info_t
*h
= get_host(bdev
->bd_disk
);
1100 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1102 dev_dbg(&h
->pdev
->dev
, "cciss_open %s\n", bdev
->bd_disk
->disk_name
);
1103 if (drv
->busy_configuring
)
1106 * Root is allowed to open raw volume zero even if it's not configured
1107 * so array config can still work. Root is also allowed to open any
1108 * volume that has a LUN ID, so it can issue IOCTL to reread the
1109 * disk information. I don't think I really like this
1110 * but I'm already using way to many device nodes to claim another one
1111 * for "raw controller".
1113 if (drv
->heads
== 0) {
1114 if (MINOR(bdev
->bd_dev
) != 0) { /* not node 0? */
1115 /* if not node 0 make sure it is a partition = 0 */
1116 if (MINOR(bdev
->bd_dev
) & 0x0f) {
1118 /* if it is, make sure we have a LUN ID */
1119 } else if (memcmp(drv
->LunID
, CTLR_LUNID
,
1120 sizeof(drv
->LunID
))) {
1124 if (!capable(CAP_SYS_ADMIN
))
1132 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
)
1136 mutex_lock(&cciss_mutex
);
1137 ret
= cciss_open(bdev
, mode
);
1138 mutex_unlock(&cciss_mutex
);
1144 * Close. Sync first.
1146 static void cciss_release(struct gendisk
*disk
, fmode_t mode
)
1149 drive_info_struct
*drv
;
1151 mutex_lock(&cciss_mutex
);
1153 drv
= get_drv(disk
);
1154 dev_dbg(&h
->pdev
->dev
, "cciss_release %s\n", disk
->disk_name
);
1157 mutex_unlock(&cciss_mutex
);
1160 #ifdef CONFIG_COMPAT
1162 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1163 unsigned cmd
, unsigned long arg
);
1164 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1165 unsigned cmd
, unsigned long arg
);
1167 static int cciss_compat_ioctl(struct block_device
*bdev
, fmode_t mode
,
1168 unsigned cmd
, unsigned long arg
)
1171 case CCISS_GETPCIINFO
:
1172 case CCISS_GETINTINFO
:
1173 case CCISS_SETINTINFO
:
1174 case CCISS_GETNODENAME
:
1175 case CCISS_SETNODENAME
:
1176 case CCISS_GETHEARTBEAT
:
1177 case CCISS_GETBUSTYPES
:
1178 case CCISS_GETFIRMVER
:
1179 case CCISS_GETDRIVVER
:
1180 case CCISS_REVALIDVOLS
:
1181 case CCISS_DEREGDISK
:
1182 case CCISS_REGNEWDISK
:
1184 case CCISS_RESCANDISK
:
1185 case CCISS_GETLUNINFO
:
1186 return cciss_ioctl(bdev
, mode
, cmd
, arg
);
1188 case CCISS_PASSTHRU32
:
1189 return cciss_ioctl32_passthru(bdev
, mode
, cmd
, arg
);
1190 case CCISS_BIG_PASSTHRU32
:
1191 return cciss_ioctl32_big_passthru(bdev
, mode
, cmd
, arg
);
1194 return -ENOIOCTLCMD
;
1198 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1199 unsigned cmd
, unsigned long arg
)
1201 IOCTL32_Command_struct __user
*arg32
=
1202 (IOCTL32_Command_struct __user
*) arg
;
1203 IOCTL_Command_struct arg64
;
1204 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
1208 memset(&arg64
, 0, sizeof(arg64
));
1211 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1212 sizeof(arg64
.LUN_info
));
1214 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1215 sizeof(arg64
.Request
));
1217 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1218 sizeof(arg64
.error_info
));
1219 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1220 err
|= get_user(cp
, &arg32
->buf
);
1221 arg64
.buf
= compat_ptr(cp
);
1222 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1227 err
= cciss_ioctl(bdev
, mode
, CCISS_PASSTHRU
, (unsigned long)p
);
1231 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1232 sizeof(arg32
->error_info
));
1238 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1239 unsigned cmd
, unsigned long arg
)
1241 BIG_IOCTL32_Command_struct __user
*arg32
=
1242 (BIG_IOCTL32_Command_struct __user
*) arg
;
1243 BIG_IOCTL_Command_struct arg64
;
1244 BIG_IOCTL_Command_struct __user
*p
=
1245 compat_alloc_user_space(sizeof(arg64
));
1249 memset(&arg64
, 0, sizeof(arg64
));
1252 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1253 sizeof(arg64
.LUN_info
));
1255 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1256 sizeof(arg64
.Request
));
1258 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1259 sizeof(arg64
.error_info
));
1260 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1261 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
1262 err
|= get_user(cp
, &arg32
->buf
);
1263 arg64
.buf
= compat_ptr(cp
);
1264 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1269 err
= cciss_ioctl(bdev
, mode
, CCISS_BIG_PASSTHRU
, (unsigned long)p
);
1273 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1274 sizeof(arg32
->error_info
));
1281 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1283 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1285 if (!drv
->cylinders
)
1288 geo
->heads
= drv
->heads
;
1289 geo
->sectors
= drv
->sectors
;
1290 geo
->cylinders
= drv
->cylinders
;
1294 static void check_ioctl_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
1296 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
1297 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
1298 (void)check_for_unit_attention(h
, c
);
1301 static int cciss_getpciinfo(ctlr_info_t
*h
, void __user
*argp
)
1303 cciss_pci_info_struct pciinfo
;
1307 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
1308 pciinfo
.bus
= h
->pdev
->bus
->number
;
1309 pciinfo
.dev_fn
= h
->pdev
->devfn
;
1310 pciinfo
.board_id
= h
->board_id
;
1311 if (copy_to_user(argp
, &pciinfo
, sizeof(cciss_pci_info_struct
)))
1316 static int cciss_getintinfo(ctlr_info_t
*h
, void __user
*argp
)
1318 cciss_coalint_struct intinfo
;
1319 unsigned long flags
;
1323 spin_lock_irqsave(&h
->lock
, flags
);
1324 intinfo
.delay
= readl(&h
->cfgtable
->HostWrite
.CoalIntDelay
);
1325 intinfo
.count
= readl(&h
->cfgtable
->HostWrite
.CoalIntCount
);
1326 spin_unlock_irqrestore(&h
->lock
, flags
);
1328 (argp
, &intinfo
, sizeof(cciss_coalint_struct
)))
1333 static int cciss_setintinfo(ctlr_info_t
*h
, void __user
*argp
)
1335 cciss_coalint_struct intinfo
;
1336 unsigned long flags
;
1341 if (!capable(CAP_SYS_ADMIN
))
1343 if (copy_from_user(&intinfo
, argp
, sizeof(intinfo
)))
1345 if ((intinfo
.delay
== 0) && (intinfo
.count
== 0))
1347 spin_lock_irqsave(&h
->lock
, flags
);
1348 /* Update the field, and then ring the doorbell */
1349 writel(intinfo
.delay
, &(h
->cfgtable
->HostWrite
.CoalIntDelay
));
1350 writel(intinfo
.count
, &(h
->cfgtable
->HostWrite
.CoalIntCount
));
1351 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1353 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1354 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1356 udelay(1000); /* delay and try again */
1358 spin_unlock_irqrestore(&h
->lock
, flags
);
1359 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1364 static int cciss_getnodename(ctlr_info_t
*h
, void __user
*argp
)
1366 NodeName_type NodeName
;
1367 unsigned long flags
;
1372 spin_lock_irqsave(&h
->lock
, flags
);
1373 for (i
= 0; i
< 16; i
++)
1374 NodeName
[i
] = readb(&h
->cfgtable
->ServerName
[i
]);
1375 spin_unlock_irqrestore(&h
->lock
, flags
);
1376 if (copy_to_user(argp
, NodeName
, sizeof(NodeName_type
)))
1381 static int cciss_setnodename(ctlr_info_t
*h
, void __user
*argp
)
1383 NodeName_type NodeName
;
1384 unsigned long flags
;
1389 if (!capable(CAP_SYS_ADMIN
))
1391 if (copy_from_user(NodeName
, argp
, sizeof(NodeName_type
)))
1393 spin_lock_irqsave(&h
->lock
, flags
);
1394 /* Update the field, and then ring the doorbell */
1395 for (i
= 0; i
< 16; i
++)
1396 writeb(NodeName
[i
], &h
->cfgtable
->ServerName
[i
]);
1397 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1398 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1399 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1401 udelay(1000); /* delay and try again */
1403 spin_unlock_irqrestore(&h
->lock
, flags
);
1404 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1409 static int cciss_getheartbeat(ctlr_info_t
*h
, void __user
*argp
)
1411 Heartbeat_type heartbeat
;
1412 unsigned long flags
;
1416 spin_lock_irqsave(&h
->lock
, flags
);
1417 heartbeat
= readl(&h
->cfgtable
->HeartBeat
);
1418 spin_unlock_irqrestore(&h
->lock
, flags
);
1419 if (copy_to_user(argp
, &heartbeat
, sizeof(Heartbeat_type
)))
1424 static int cciss_getbustypes(ctlr_info_t
*h
, void __user
*argp
)
1426 BusTypes_type BusTypes
;
1427 unsigned long flags
;
1431 spin_lock_irqsave(&h
->lock
, flags
);
1432 BusTypes
= readl(&h
->cfgtable
->BusTypes
);
1433 spin_unlock_irqrestore(&h
->lock
, flags
);
1434 if (copy_to_user(argp
, &BusTypes
, sizeof(BusTypes_type
)))
1439 static int cciss_getfirmver(ctlr_info_t
*h
, void __user
*argp
)
1441 FirmwareVer_type firmware
;
1445 memcpy(firmware
, h
->firm_ver
, 4);
1448 (argp
, firmware
, sizeof(FirmwareVer_type
)))
1453 static int cciss_getdrivver(ctlr_info_t
*h
, void __user
*argp
)
1455 DriverVer_type DriverVer
= DRIVER_VERSION
;
1459 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
1464 static int cciss_getluninfo(ctlr_info_t
*h
,
1465 struct gendisk
*disk
, void __user
*argp
)
1467 LogvolInfo_struct luninfo
;
1468 drive_info_struct
*drv
= get_drv(disk
);
1472 memcpy(&luninfo
.LunID
, drv
->LunID
, sizeof(luninfo
.LunID
));
1473 luninfo
.num_opens
= drv
->usage_count
;
1474 luninfo
.num_parts
= 0;
1475 if (copy_to_user(argp
, &luninfo
, sizeof(LogvolInfo_struct
)))
1480 static int cciss_passthru(ctlr_info_t
*h
, void __user
*argp
)
1482 IOCTL_Command_struct iocommand
;
1483 CommandList_struct
*c
;
1486 DECLARE_COMPLETION_ONSTACK(wait
);
1491 if (!capable(CAP_SYS_RAWIO
))
1495 (&iocommand
, argp
, sizeof(IOCTL_Command_struct
)))
1497 if ((iocommand
.buf_size
< 1) &&
1498 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
1501 if (iocommand
.buf_size
> 0) {
1502 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
1506 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
1507 /* Copy the data into the buffer we created */
1508 if (copy_from_user(buff
, iocommand
.buf
, iocommand
.buf_size
)) {
1513 memset(buff
, 0, iocommand
.buf_size
);
1515 c
= cmd_special_alloc(h
);
1520 /* Fill in the command type */
1521 c
->cmd_type
= CMD_IOCTL_PEND
;
1522 /* Fill in Command Header */
1523 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
1524 if (iocommand
.buf_size
> 0) { /* buffer to fill */
1525 c
->Header
.SGList
= 1;
1526 c
->Header
.SGTotal
= 1;
1527 } else { /* no buffers to fill */
1528 c
->Header
.SGList
= 0;
1529 c
->Header
.SGTotal
= 0;
1531 c
->Header
.LUN
= iocommand
.LUN_info
;
1532 /* use the kernel address the cmd block for tag */
1533 c
->Header
.Tag
.lower
= c
->busaddr
;
1535 /* Fill in Request block */
1536 c
->Request
= iocommand
.Request
;
1538 /* Fill in the scatter gather information */
1539 if (iocommand
.buf_size
> 0) {
1540 temp64
.val
= pci_map_single(h
->pdev
, buff
,
1541 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
1542 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
1543 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
1544 c
->SG
[0].Len
= iocommand
.buf_size
;
1545 c
->SG
[0].Ext
= 0; /* we are not chaining */
1549 enqueue_cmd_and_start_io(h
, c
);
1550 wait_for_completion(&wait
);
1552 /* unlock the buffers from DMA */
1553 temp64
.val32
.lower
= c
->SG
[0].Addr
.lower
;
1554 temp64
.val32
.upper
= c
->SG
[0].Addr
.upper
;
1555 pci_unmap_single(h
->pdev
, (dma_addr_t
) temp64
.val
, iocommand
.buf_size
,
1556 PCI_DMA_BIDIRECTIONAL
);
1557 check_ioctl_unit_attention(h
, c
);
1559 /* Copy the error information out */
1560 iocommand
.error_info
= *(c
->err_info
);
1561 if (copy_to_user(argp
, &iocommand
, sizeof(IOCTL_Command_struct
))) {
1563 cmd_special_free(h
, c
);
1567 if (iocommand
.Request
.Type
.Direction
== XFER_READ
) {
1568 /* Copy the data out of the buffer we created */
1569 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
1571 cmd_special_free(h
, c
);
1576 cmd_special_free(h
, c
);
1580 static int cciss_bigpassthru(ctlr_info_t
*h
, void __user
*argp
)
1582 BIG_IOCTL_Command_struct
*ioc
;
1583 CommandList_struct
*c
;
1584 unsigned char **buff
= NULL
;
1585 int *buff_size
= NULL
;
1590 DECLARE_COMPLETION_ONSTACK(wait
);
1593 BYTE __user
*data_ptr
;
1597 if (!capable(CAP_SYS_RAWIO
))
1599 ioc
= kmalloc(sizeof(*ioc
), GFP_KERNEL
);
1604 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
1608 if ((ioc
->buf_size
< 1) &&
1609 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
1613 /* Check kmalloc limits using all SGs */
1614 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
1618 if (ioc
->buf_size
> ioc
->malloc_size
* MAXSGENTRIES
) {
1622 buff
= kzalloc(MAXSGENTRIES
* sizeof(char *), GFP_KERNEL
);
1627 buff_size
= kmalloc(MAXSGENTRIES
* sizeof(int), GFP_KERNEL
);
1632 left
= ioc
->buf_size
;
1633 data_ptr
= ioc
->buf
;
1635 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
1636 buff_size
[sg_used
] = sz
;
1637 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
1638 if (buff
[sg_used
] == NULL
) {
1642 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
1643 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
1648 memset(buff
[sg_used
], 0, sz
);
1654 c
= cmd_special_alloc(h
);
1659 c
->cmd_type
= CMD_IOCTL_PEND
;
1660 c
->Header
.ReplyQueue
= 0;
1661 c
->Header
.SGList
= sg_used
;
1662 c
->Header
.SGTotal
= sg_used
;
1663 c
->Header
.LUN
= ioc
->LUN_info
;
1664 c
->Header
.Tag
.lower
= c
->busaddr
;
1666 c
->Request
= ioc
->Request
;
1667 for (i
= 0; i
< sg_used
; i
++) {
1668 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
], buff_size
[i
],
1669 PCI_DMA_BIDIRECTIONAL
);
1670 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
1671 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
1672 c
->SG
[i
].Len
= buff_size
[i
];
1673 c
->SG
[i
].Ext
= 0; /* we are not chaining */
1676 enqueue_cmd_and_start_io(h
, c
);
1677 wait_for_completion(&wait
);
1678 /* unlock the buffers from DMA */
1679 for (i
= 0; i
< sg_used
; i
++) {
1680 temp64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1681 temp64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1682 pci_unmap_single(h
->pdev
,
1683 (dma_addr_t
) temp64
.val
, buff_size
[i
],
1684 PCI_DMA_BIDIRECTIONAL
);
1686 check_ioctl_unit_attention(h
, c
);
1687 /* Copy the error information out */
1688 ioc
->error_info
= *(c
->err_info
);
1689 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
1690 cmd_special_free(h
, c
);
1694 if (ioc
->Request
.Type
.Direction
== XFER_READ
) {
1695 /* Copy the data out of the buffer we created */
1696 BYTE __user
*ptr
= ioc
->buf
;
1697 for (i
= 0; i
< sg_used
; i
++) {
1698 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
1699 cmd_special_free(h
, c
);
1703 ptr
+= buff_size
[i
];
1706 cmd_special_free(h
, c
);
1710 for (i
= 0; i
< sg_used
; i
++)
1719 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
1720 unsigned int cmd
, unsigned long arg
)
1722 struct gendisk
*disk
= bdev
->bd_disk
;
1723 ctlr_info_t
*h
= get_host(disk
);
1724 void __user
*argp
= (void __user
*)arg
;
1726 dev_dbg(&h
->pdev
->dev
, "cciss_ioctl: Called with cmd=%x %lx\n",
1729 case CCISS_GETPCIINFO
:
1730 return cciss_getpciinfo(h
, argp
);
1731 case CCISS_GETINTINFO
:
1732 return cciss_getintinfo(h
, argp
);
1733 case CCISS_SETINTINFO
:
1734 return cciss_setintinfo(h
, argp
);
1735 case CCISS_GETNODENAME
:
1736 return cciss_getnodename(h
, argp
);
1737 case CCISS_SETNODENAME
:
1738 return cciss_setnodename(h
, argp
);
1739 case CCISS_GETHEARTBEAT
:
1740 return cciss_getheartbeat(h
, argp
);
1741 case CCISS_GETBUSTYPES
:
1742 return cciss_getbustypes(h
, argp
);
1743 case CCISS_GETFIRMVER
:
1744 return cciss_getfirmver(h
, argp
);
1745 case CCISS_GETDRIVVER
:
1746 return cciss_getdrivver(h
, argp
);
1747 case CCISS_DEREGDISK
:
1749 case CCISS_REVALIDVOLS
:
1750 return rebuild_lun_table(h
, 0, 1);
1751 case CCISS_GETLUNINFO
:
1752 return cciss_getluninfo(h
, disk
, argp
);
1753 case CCISS_PASSTHRU
:
1754 return cciss_passthru(h
, argp
);
1755 case CCISS_BIG_PASSTHRU
:
1756 return cciss_bigpassthru(h
, argp
);
1758 /* scsi_cmd_blk_ioctl handles these, below, though some are not */
1759 /* very meaningful for cciss. SG_IO is the main one people want. */
1761 case SG_GET_VERSION_NUM
:
1762 case SG_SET_TIMEOUT
:
1763 case SG_GET_TIMEOUT
:
1764 case SG_GET_RESERVED_SIZE
:
1765 case SG_SET_RESERVED_SIZE
:
1766 case SG_EMULATED_HOST
:
1768 case SCSI_IOCTL_SEND_COMMAND
:
1769 return scsi_cmd_blk_ioctl(bdev
, mode
, cmd
, argp
);
1771 /* scsi_cmd_blk_ioctl would normally handle these, below, but */
1772 /* they aren't a good fit for cciss, as CD-ROMs are */
1773 /* not supported, and we don't have any bus/target/lun */
1774 /* which we present to the kernel. */
1776 case CDROM_SEND_PACKET
:
1777 case CDROMCLOSETRAY
:
1779 case SCSI_IOCTL_GET_IDLUN
:
1780 case SCSI_IOCTL_GET_BUS_NUMBER
:
1786 static void cciss_check_queues(ctlr_info_t
*h
)
1788 int start_queue
= h
->next_to_run
;
1791 /* check to see if we have maxed out the number of commands that can
1792 * be placed on the queue. If so then exit. We do this check here
1793 * in case the interrupt we serviced was from an ioctl and did not
1794 * free any new commands.
1796 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
)
1799 /* We have room on the queue for more commands. Now we need to queue
1800 * them up. We will also keep track of the next queue to run so
1801 * that every queue gets a chance to be started first.
1803 for (i
= 0; i
< h
->highest_lun
+ 1; i
++) {
1804 int curr_queue
= (start_queue
+ i
) % (h
->highest_lun
+ 1);
1805 /* make sure the disk has been added and the drive is real
1806 * because this can be called from the middle of init_one.
1808 if (!h
->drv
[curr_queue
])
1810 if (!(h
->drv
[curr_queue
]->queue
) ||
1811 !(h
->drv
[curr_queue
]->heads
))
1813 blk_start_queue(h
->gendisk
[curr_queue
]->queue
);
1815 /* check to see if we have maxed out the number of commands
1816 * that can be placed on the queue.
1818 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
) {
1819 if (curr_queue
== start_queue
) {
1821 (start_queue
+ 1) % (h
->highest_lun
+ 1);
1824 h
->next_to_run
= curr_queue
;
1831 static void cciss_softirq_done(struct request
*rq
)
1833 CommandList_struct
*c
= rq
->completion_data
;
1834 ctlr_info_t
*h
= hba
[c
->ctlr
];
1835 SGDescriptor_struct
*curr_sg
= c
->SG
;
1837 unsigned long flags
;
1841 if (c
->Request
.Type
.Direction
== XFER_READ
)
1842 ddir
= PCI_DMA_FROMDEVICE
;
1844 ddir
= PCI_DMA_TODEVICE
;
1846 /* command did not need to be retried */
1847 /* unmap the DMA mapping for all the scatter gather elements */
1848 for (i
= 0; i
< c
->Header
.SGList
; i
++) {
1849 if (curr_sg
[sg_index
].Ext
== CCISS_SG_CHAIN
) {
1850 cciss_unmap_sg_chain_block(h
, c
);
1851 /* Point to the next block */
1852 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
1855 temp64
.val32
.lower
= curr_sg
[sg_index
].Addr
.lower
;
1856 temp64
.val32
.upper
= curr_sg
[sg_index
].Addr
.upper
;
1857 pci_unmap_page(h
->pdev
, temp64
.val
, curr_sg
[sg_index
].Len
,
1862 dev_dbg(&h
->pdev
->dev
, "Done with %p\n", rq
);
1864 /* set the residual count for pc requests */
1865 if (blk_rq_is_passthrough(rq
))
1866 scsi_req(rq
)->resid_len
= c
->err_info
->ResidualCnt
;
1867 blk_end_request_all(rq
, scsi_req(rq
)->result
?
1868 BLK_STS_IOERR
: BLK_STS_OK
);
1870 spin_lock_irqsave(&h
->lock
, flags
);
1872 cciss_check_queues(h
);
1873 spin_unlock_irqrestore(&h
->lock
, flags
);
1876 static inline void log_unit_to_scsi3addr(ctlr_info_t
*h
,
1877 unsigned char scsi3addr
[], uint32_t log_unit
)
1879 memcpy(scsi3addr
, h
->drv
[log_unit
]->LunID
,
1880 sizeof(h
->drv
[log_unit
]->LunID
));
1883 /* This function gets the SCSI vendor, model, and revision of a logical drive
1884 * via the inquiry page 0. Model, vendor, and rev are set to empty strings if
1885 * they cannot be read.
1887 static void cciss_get_device_descr(ctlr_info_t
*h
, int logvol
,
1888 char *vendor
, char *model
, char *rev
)
1891 InquiryData_struct
*inq_buf
;
1892 unsigned char scsi3addr
[8];
1898 inq_buf
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1902 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1903 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buf
, sizeof(*inq_buf
), 0,
1904 scsi3addr
, TYPE_CMD
);
1906 memcpy(vendor
, &inq_buf
->data_byte
[8], VENDOR_LEN
);
1907 vendor
[VENDOR_LEN
] = '\0';
1908 memcpy(model
, &inq_buf
->data_byte
[16], MODEL_LEN
);
1909 model
[MODEL_LEN
] = '\0';
1910 memcpy(rev
, &inq_buf
->data_byte
[32], REV_LEN
);
1911 rev
[REV_LEN
] = '\0';
1918 /* This function gets the serial number of a logical drive via
1919 * inquiry page 0x83. Serial no. is 16 bytes. If the serial
1920 * number cannot be had, for whatever reason, 16 bytes of 0xff
1921 * are returned instead.
1923 static void cciss_get_serial_no(ctlr_info_t
*h
, int logvol
,
1924 unsigned char *serial_no
, int buflen
)
1926 #define PAGE_83_INQ_BYTES 64
1929 unsigned char scsi3addr
[8];
1933 memset(serial_no
, 0xff, buflen
);
1934 buf
= kzalloc(PAGE_83_INQ_BYTES
, GFP_KERNEL
);
1937 memset(serial_no
, 0, buflen
);
1938 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1939 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, buf
,
1940 PAGE_83_INQ_BYTES
, 0x83, scsi3addr
, TYPE_CMD
);
1942 memcpy(serial_no
, &buf
[8], buflen
);
1947 static void cciss_initialize_rq(struct request
*rq
)
1949 struct scsi_request
*sreq
= blk_mq_rq_to_pdu(rq
);
1951 scsi_req_init(sreq
);
1955 * cciss_add_disk sets up the block device queue for a logical drive
1957 static int cciss_add_disk(ctlr_info_t
*h
, struct gendisk
*disk
,
1960 disk
->queue
= blk_alloc_queue(GFP_KERNEL
);
1962 goto init_queue_failure
;
1964 disk
->queue
->cmd_size
= sizeof(struct scsi_request
);
1965 disk
->queue
->request_fn
= do_cciss_request
;
1966 disk
->queue
->initialize_rq_fn
= cciss_initialize_rq
;
1967 disk
->queue
->queue_lock
= &h
->lock
;
1968 queue_flag_set_unlocked(QUEUE_FLAG_SCSI_PASSTHROUGH
, disk
->queue
);
1969 if (blk_init_allocated_queue(disk
->queue
) < 0)
1972 sprintf(disk
->disk_name
, "cciss/c%dd%d", h
->ctlr
, drv_index
);
1973 disk
->major
= h
->major
;
1974 disk
->first_minor
= drv_index
<< NWD_SHIFT
;
1975 disk
->fops
= &cciss_fops
;
1976 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
1978 disk
->private_data
= h
->drv
[drv_index
];
1980 /* Set up queue information */
1981 blk_queue_bounce_limit(disk
->queue
, h
->pdev
->dma_mask
);
1983 /* This is a hardware imposed limit. */
1984 blk_queue_max_segments(disk
->queue
, h
->maxsgentries
);
1986 blk_queue_max_hw_sectors(disk
->queue
, h
->cciss_max_sectors
);
1988 blk_queue_softirq_done(disk
->queue
, cciss_softirq_done
);
1990 disk
->queue
->queuedata
= h
;
1992 blk_queue_logical_block_size(disk
->queue
,
1993 h
->drv
[drv_index
]->block_size
);
1995 /* Make sure all queue data is written out before */
1996 /* setting h->drv[drv_index]->queue, as setting this */
1997 /* allows the interrupt handler to start the queue */
1999 h
->drv
[drv_index
]->queue
= disk
->queue
;
2000 device_add_disk(&h
->drv
[drv_index
]->dev
, disk
);
2004 blk_cleanup_queue(disk
->queue
);
2010 /* This function will check the usage_count of the drive to be updated/added.
2011 * If the usage_count is zero and it is a heretofore unknown drive, or,
2012 * the drive's capacity, geometry, or serial number has changed,
2013 * then the drive information will be updated and the disk will be
2014 * re-registered with the kernel. If these conditions don't hold,
2015 * then it will be left alone for the next reboot. The exception to this
2016 * is disk 0 which will always be left registered with the kernel since it
2017 * is also the controller node. Any changes to disk 0 will show up on
2020 static void cciss_update_drive_info(ctlr_info_t
*h
, int drv_index
,
2021 int first_time
, int via_ioctl
)
2023 struct gendisk
*disk
;
2024 InquiryData_struct
*inq_buff
= NULL
;
2025 unsigned int block_size
;
2026 sector_t total_size
;
2027 unsigned long flags
= 0;
2029 drive_info_struct
*drvinfo
;
2031 /* Get information about the disk and modify the driver structure */
2032 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
2033 drvinfo
= kzalloc(sizeof(*drvinfo
), GFP_KERNEL
);
2034 if (inq_buff
== NULL
|| drvinfo
== NULL
)
2037 /* testing to see if 16-byte CDBs are already being used */
2038 if (h
->cciss_read
== CCISS_READ_16
) {
2039 cciss_read_capacity_16(h
, drv_index
,
2040 &total_size
, &block_size
);
2043 cciss_read_capacity(h
, drv_index
, &total_size
, &block_size
);
2044 /* if read_capacity returns all F's this volume is >2TB */
2045 /* in size so we switch to 16-byte CDB's for all */
2046 /* read/write ops */
2047 if (total_size
== 0xFFFFFFFFULL
) {
2048 cciss_read_capacity_16(h
, drv_index
,
2049 &total_size
, &block_size
);
2050 h
->cciss_read
= CCISS_READ_16
;
2051 h
->cciss_write
= CCISS_WRITE_16
;
2053 h
->cciss_read
= CCISS_READ_10
;
2054 h
->cciss_write
= CCISS_WRITE_10
;
2058 cciss_geometry_inquiry(h
, drv_index
, total_size
, block_size
,
2060 drvinfo
->block_size
= block_size
;
2061 drvinfo
->nr_blocks
= total_size
+ 1;
2063 cciss_get_device_descr(h
, drv_index
, drvinfo
->vendor
,
2064 drvinfo
->model
, drvinfo
->rev
);
2065 cciss_get_serial_no(h
, drv_index
, drvinfo
->serial_no
,
2066 sizeof(drvinfo
->serial_no
));
2067 /* Save the lunid in case we deregister the disk, below. */
2068 memcpy(drvinfo
->LunID
, h
->drv
[drv_index
]->LunID
,
2069 sizeof(drvinfo
->LunID
));
2071 /* Is it the same disk we already know, and nothing's changed? */
2072 if (h
->drv
[drv_index
]->raid_level
!= -1 &&
2073 ((memcmp(drvinfo
->serial_no
,
2074 h
->drv
[drv_index
]->serial_no
, 16) == 0) &&
2075 drvinfo
->block_size
== h
->drv
[drv_index
]->block_size
&&
2076 drvinfo
->nr_blocks
== h
->drv
[drv_index
]->nr_blocks
&&
2077 drvinfo
->heads
== h
->drv
[drv_index
]->heads
&&
2078 drvinfo
->sectors
== h
->drv
[drv_index
]->sectors
&&
2079 drvinfo
->cylinders
== h
->drv
[drv_index
]->cylinders
))
2080 /* The disk is unchanged, nothing to update */
2083 /* If we get here it's not the same disk, or something's changed,
2084 * so we need to * deregister it, and re-register it, if it's not
2086 * If the disk already exists then deregister it before proceeding
2087 * (unless it's the first disk (for the controller node).
2089 if (h
->drv
[drv_index
]->raid_level
!= -1 && drv_index
!= 0) {
2090 dev_warn(&h
->pdev
->dev
, "disk %d has changed.\n", drv_index
);
2091 spin_lock_irqsave(&h
->lock
, flags
);
2092 h
->drv
[drv_index
]->busy_configuring
= 1;
2093 spin_unlock_irqrestore(&h
->lock
, flags
);
2095 /* deregister_disk sets h->drv[drv_index]->queue = NULL
2096 * which keeps the interrupt handler from starting
2099 ret
= deregister_disk(h
, drv_index
, 0, via_ioctl
);
2102 /* If the disk is in use return */
2106 /* Save the new information from cciss_geometry_inquiry
2107 * and serial number inquiry. If the disk was deregistered
2108 * above, then h->drv[drv_index] will be NULL.
2110 if (h
->drv
[drv_index
] == NULL
) {
2111 drvinfo
->device_initialized
= 0;
2112 h
->drv
[drv_index
] = drvinfo
;
2113 drvinfo
= NULL
; /* so it won't be freed below. */
2115 /* special case for cxd0 */
2116 h
->drv
[drv_index
]->block_size
= drvinfo
->block_size
;
2117 h
->drv
[drv_index
]->nr_blocks
= drvinfo
->nr_blocks
;
2118 h
->drv
[drv_index
]->heads
= drvinfo
->heads
;
2119 h
->drv
[drv_index
]->sectors
= drvinfo
->sectors
;
2120 h
->drv
[drv_index
]->cylinders
= drvinfo
->cylinders
;
2121 h
->drv
[drv_index
]->raid_level
= drvinfo
->raid_level
;
2122 memcpy(h
->drv
[drv_index
]->serial_no
, drvinfo
->serial_no
, 16);
2123 memcpy(h
->drv
[drv_index
]->vendor
, drvinfo
->vendor
,
2125 memcpy(h
->drv
[drv_index
]->model
, drvinfo
->model
, MODEL_LEN
+ 1);
2126 memcpy(h
->drv
[drv_index
]->rev
, drvinfo
->rev
, REV_LEN
+ 1);
2130 disk
= h
->gendisk
[drv_index
];
2131 set_capacity(disk
, h
->drv
[drv_index
]->nr_blocks
);
2133 /* If it's not disk 0 (drv_index != 0)
2134 * or if it was disk 0, but there was previously
2135 * no actual corresponding configured logical drive
2136 * (raid_leve == -1) then we want to update the
2137 * logical drive's information.
2139 if (drv_index
|| first_time
) {
2140 if (cciss_add_disk(h
, disk
, drv_index
) != 0) {
2141 cciss_free_gendisk(h
, drv_index
);
2142 cciss_free_drive_info(h
, drv_index
);
2143 dev_warn(&h
->pdev
->dev
, "could not update disk %d\n",
2154 dev_err(&h
->pdev
->dev
, "out of memory\n");
2158 /* This function will find the first index of the controllers drive array
2159 * that has a null drv pointer and allocate the drive info struct and
2160 * will return that index This is where new drives will be added.
2161 * If the index to be returned is greater than the highest_lun index for
2162 * the controller then highest_lun is set * to this new index.
2163 * If there are no available indexes or if tha allocation fails, then -1
2164 * is returned. * "controller_node" is used to know if this is a real
2165 * logical drive, or just the controller node, which determines if this
2166 * counts towards highest_lun.
2168 static int cciss_alloc_drive_info(ctlr_info_t
*h
, int controller_node
)
2171 drive_info_struct
*drv
;
2173 /* Search for an empty slot for our drive info */
2174 for (i
= 0; i
< CISS_MAX_LUN
; i
++) {
2176 /* if not cxd0 case, and it's occupied, skip it. */
2177 if (h
->drv
[i
] && i
!= 0)
2180 * If it's cxd0 case, and drv is alloc'ed already, and a
2181 * disk is configured there, skip it.
2183 if (i
== 0 && h
->drv
[i
] && h
->drv
[i
]->raid_level
!= -1)
2187 * We've found an empty slot. Update highest_lun
2188 * provided this isn't just the fake cxd0 controller node.
2190 if (i
> h
->highest_lun
&& !controller_node
)
2193 /* If adding a real disk at cxd0, and it's already alloc'ed */
2194 if (i
== 0 && h
->drv
[i
] != NULL
)
2198 * Found an empty slot, not already alloc'ed. Allocate it.
2199 * Mark it with raid_level == -1, so we know it's new later on.
2201 drv
= kzalloc(sizeof(*drv
), GFP_KERNEL
);
2204 drv
->raid_level
= -1; /* so we know it's new */
2211 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
)
2213 kfree(h
->drv
[drv_index
]);
2214 h
->drv
[drv_index
] = NULL
;
2217 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
)
2219 put_disk(h
->gendisk
[drv_index
]);
2220 h
->gendisk
[drv_index
] = NULL
;
2223 /* cciss_add_gendisk finds a free hba[]->drv structure
2224 * and allocates a gendisk if needed, and sets the lunid
2225 * in the drvinfo structure. It returns the index into
2226 * the ->drv[] array, or -1 if none are free.
2227 * is_controller_node indicates whether highest_lun should
2228 * count this disk, or if it's only being added to provide
2229 * a means to talk to the controller in case no logical
2230 * drives have yet been configured.
2232 static int cciss_add_gendisk(ctlr_info_t
*h
, unsigned char lunid
[],
2233 int controller_node
)
2237 drv_index
= cciss_alloc_drive_info(h
, controller_node
);
2238 if (drv_index
== -1)
2241 /*Check if the gendisk needs to be allocated */
2242 if (!h
->gendisk
[drv_index
]) {
2243 h
->gendisk
[drv_index
] =
2244 alloc_disk(1 << NWD_SHIFT
);
2245 if (!h
->gendisk
[drv_index
]) {
2246 dev_err(&h
->pdev
->dev
,
2247 "could not allocate a new disk %d\n",
2249 goto err_free_drive_info
;
2252 memcpy(h
->drv
[drv_index
]->LunID
, lunid
,
2253 sizeof(h
->drv
[drv_index
]->LunID
));
2254 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
2256 /* Don't need to mark this busy because nobody */
2257 /* else knows about this disk yet to contend */
2258 /* for access to it. */
2259 h
->drv
[drv_index
]->busy_configuring
= 0;
2264 cciss_free_gendisk(h
, drv_index
);
2265 err_free_drive_info
:
2266 cciss_free_drive_info(h
, drv_index
);
2270 /* This is for the special case of a controller which
2271 * has no logical drives. In this case, we still need
2272 * to register a disk so the controller can be accessed
2273 * by the Array Config Utility.
2275 static void cciss_add_controller_node(ctlr_info_t
*h
)
2277 struct gendisk
*disk
;
2280 if (h
->gendisk
[0] != NULL
) /* already did this? Then bail. */
2283 drv_index
= cciss_add_gendisk(h
, CTLR_LUNID
, 1);
2284 if (drv_index
== -1)
2286 h
->drv
[drv_index
]->block_size
= 512;
2287 h
->drv
[drv_index
]->nr_blocks
= 0;
2288 h
->drv
[drv_index
]->heads
= 0;
2289 h
->drv
[drv_index
]->sectors
= 0;
2290 h
->drv
[drv_index
]->cylinders
= 0;
2291 h
->drv
[drv_index
]->raid_level
= -1;
2292 memset(h
->drv
[drv_index
]->serial_no
, 0, 16);
2293 disk
= h
->gendisk
[drv_index
];
2294 if (cciss_add_disk(h
, disk
, drv_index
) == 0)
2296 cciss_free_gendisk(h
, drv_index
);
2297 cciss_free_drive_info(h
, drv_index
);
2299 dev_warn(&h
->pdev
->dev
, "could not add disk 0.\n");
2303 /* This function will add and remove logical drives from the Logical
2304 * drive array of the controller and maintain persistency of ordering
2305 * so that mount points are preserved until the next reboot. This allows
2306 * for the removal of logical drives in the middle of the drive array
2307 * without a re-ordering of those drives.
2309 * h = The controller to perform the operations on
2311 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
,
2315 ReportLunData_struct
*ld_buff
= NULL
;
2321 unsigned char lunid
[8] = CTLR_LUNID
;
2322 unsigned long flags
;
2324 if (!capable(CAP_SYS_RAWIO
))
2327 /* Set busy_configuring flag for this operation */
2328 spin_lock_irqsave(&h
->lock
, flags
);
2329 if (h
->busy_configuring
) {
2330 spin_unlock_irqrestore(&h
->lock
, flags
);
2333 h
->busy_configuring
= 1;
2334 spin_unlock_irqrestore(&h
->lock
, flags
);
2336 ld_buff
= kzalloc(sizeof(ReportLunData_struct
), GFP_KERNEL
);
2337 if (ld_buff
== NULL
)
2340 return_code
= sendcmd_withirq(h
, CISS_REPORT_LOG
, ld_buff
,
2341 sizeof(ReportLunData_struct
),
2342 0, CTLR_LUNID
, TYPE_CMD
);
2344 if (return_code
== IO_OK
)
2345 listlength
= be32_to_cpu(*(__be32
*) ld_buff
->LUNListLength
);
2346 else { /* reading number of logical volumes failed */
2347 dev_warn(&h
->pdev
->dev
,
2348 "report logical volume command failed\n");
2353 num_luns
= listlength
/ 8; /* 8 bytes per entry */
2354 if (num_luns
> CISS_MAX_LUN
) {
2355 num_luns
= CISS_MAX_LUN
;
2356 dev_warn(&h
->pdev
->dev
, "more luns configured"
2357 " on controller than can be handled by"
2362 cciss_add_controller_node(h
);
2364 /* Compare controller drive array to driver's drive array
2365 * to see if any drives are missing on the controller due
2366 * to action of Array Config Utility (user deletes drive)
2367 * and deregister logical drives which have disappeared.
2369 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2373 /* skip holes in the array from already deleted drives */
2374 if (h
->drv
[i
] == NULL
)
2377 for (j
= 0; j
< num_luns
; j
++) {
2378 memcpy(lunid
, &ld_buff
->LUN
[j
][0], sizeof(lunid
));
2379 if (memcmp(h
->drv
[i
]->LunID
, lunid
,
2380 sizeof(lunid
)) == 0) {
2386 /* Deregister it from the OS, it's gone. */
2387 spin_lock_irqsave(&h
->lock
, flags
);
2388 h
->drv
[i
]->busy_configuring
= 1;
2389 spin_unlock_irqrestore(&h
->lock
, flags
);
2390 return_code
= deregister_disk(h
, i
, 1, via_ioctl
);
2391 if (h
->drv
[i
] != NULL
)
2392 h
->drv
[i
]->busy_configuring
= 0;
2396 /* Compare controller drive array to driver's drive array.
2397 * Check for updates in the drive information and any new drives
2398 * on the controller due to ACU adding logical drives, or changing
2399 * a logical drive's size, etc. Reregister any new/changed drives
2401 for (i
= 0; i
< num_luns
; i
++) {
2406 memcpy(lunid
, &ld_buff
->LUN
[i
][0], sizeof(lunid
));
2407 /* Find if the LUN is already in the drive array
2408 * of the driver. If so then update its info
2409 * if not in use. If it does not exist then find
2410 * the first free index and add it.
2412 for (j
= 0; j
<= h
->highest_lun
; j
++) {
2413 if (h
->drv
[j
] != NULL
&&
2414 memcmp(h
->drv
[j
]->LunID
, lunid
,
2415 sizeof(h
->drv
[j
]->LunID
)) == 0) {
2422 /* check if the drive was found already in the array */
2424 drv_index
= cciss_add_gendisk(h
, lunid
, 0);
2425 if (drv_index
== -1)
2428 cciss_update_drive_info(h
, drv_index
, first_time
, via_ioctl
);
2433 h
->busy_configuring
= 0;
2434 /* We return -1 here to tell the ACU that we have registered/updated
2435 * all of the drives that we can and to keep it from calling us
2440 dev_err(&h
->pdev
->dev
, "out of memory\n");
2441 h
->busy_configuring
= 0;
2445 static void cciss_clear_drive_info(drive_info_struct
*drive_info
)
2447 /* zero out the disk size info */
2448 drive_info
->nr_blocks
= 0;
2449 drive_info
->block_size
= 0;
2450 drive_info
->heads
= 0;
2451 drive_info
->sectors
= 0;
2452 drive_info
->cylinders
= 0;
2453 drive_info
->raid_level
= -1;
2454 memset(drive_info
->serial_no
, 0, sizeof(drive_info
->serial_no
));
2455 memset(drive_info
->model
, 0, sizeof(drive_info
->model
));
2456 memset(drive_info
->rev
, 0, sizeof(drive_info
->rev
));
2457 memset(drive_info
->vendor
, 0, sizeof(drive_info
->vendor
));
2459 * don't clear the LUNID though, we need to remember which
2464 /* This function will deregister the disk and it's queue from the
2465 * kernel. It must be called with the controller lock held and the
2466 * drv structures busy_configuring flag set. It's parameters are:
2468 * disk = This is the disk to be deregistered
2469 * drv = This is the drive_info_struct associated with the disk to be
2470 * deregistered. It contains information about the disk used
2472 * clear_all = This flag determines whether or not the disk information
2473 * is going to be completely cleared out and the highest_lun
2474 * reset. Sometimes we want to clear out information about
2475 * the disk in preparation for re-adding it. In this case
2476 * the highest_lun should be left unchanged and the LunID
2477 * should not be cleared.
2479 * This indicates whether we've reached this path via ioctl.
2480 * This affects the maximum usage count allowed for c0d0 to be messed with.
2481 * If this path is reached via ioctl(), then the max_usage_count will
2482 * be 1, as the process calling ioctl() has got to have the device open.
2483 * If we get here via sysfs, then the max usage count will be zero.
2485 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
2486 int clear_all
, int via_ioctl
)
2489 struct gendisk
*disk
;
2490 drive_info_struct
*drv
;
2491 int recalculate_highest_lun
;
2493 if (!capable(CAP_SYS_RAWIO
))
2496 drv
= h
->drv
[drv_index
];
2497 disk
= h
->gendisk
[drv_index
];
2499 /* make sure logical volume is NOT is use */
2500 if (clear_all
|| (h
->gendisk
[0] == disk
)) {
2501 if (drv
->usage_count
> via_ioctl
)
2503 } else if (drv
->usage_count
> 0)
2506 recalculate_highest_lun
= (drv
== h
->drv
[h
->highest_lun
]);
2508 /* invalidate the devices and deregister the disk. If it is disk
2509 * zero do not deregister it but just zero out it's values. This
2510 * allows us to delete disk zero but keep the controller registered.
2512 if (h
->gendisk
[0] != disk
) {
2513 struct request_queue
*q
= disk
->queue
;
2514 if (disk
->flags
& GENHD_FL_UP
) {
2515 cciss_destroy_ld_sysfs_entry(h
, drv_index
, 0);
2519 blk_cleanup_queue(q
);
2520 /* If clear_all is set then we are deleting the logical
2521 * drive, not just refreshing its info. For drives
2522 * other than disk 0 we will call put_disk. We do not
2523 * do this for disk 0 as we need it to be able to
2524 * configure the controller.
2527 /* This isn't pretty, but we need to find the
2528 * disk in our array and NULL our the pointer.
2529 * This is so that we will call alloc_disk if
2530 * this index is used again later.
2532 for (i
=0; i
< CISS_MAX_LUN
; i
++){
2533 if (h
->gendisk
[i
] == disk
) {
2534 h
->gendisk
[i
] = NULL
;
2541 set_capacity(disk
, 0);
2542 cciss_clear_drive_info(drv
);
2547 /* if it was the last disk, find the new hightest lun */
2548 if (clear_all
&& recalculate_highest_lun
) {
2549 int newhighest
= -1;
2550 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2551 /* if the disk has size > 0, it is available */
2552 if (h
->drv
[i
] && h
->drv
[i
]->heads
)
2555 h
->highest_lun
= newhighest
;
2560 static int fill_cmd(ctlr_info_t
*h
, CommandList_struct
*c
, __u8 cmd
, void *buff
,
2561 size_t size
, __u8 page_code
, unsigned char *scsi3addr
,
2564 u64bit buff_dma_handle
;
2567 c
->cmd_type
= CMD_IOCTL_PEND
;
2568 c
->Header
.ReplyQueue
= 0;
2570 c
->Header
.SGList
= 1;
2571 c
->Header
.SGTotal
= 1;
2573 c
->Header
.SGList
= 0;
2574 c
->Header
.SGTotal
= 0;
2576 c
->Header
.Tag
.lower
= c
->busaddr
;
2577 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2579 c
->Request
.Type
.Type
= cmd_type
;
2580 if (cmd_type
== TYPE_CMD
) {
2583 /* are we trying to read a vital product page */
2584 if (page_code
!= 0) {
2585 c
->Request
.CDB
[1] = 0x01;
2586 c
->Request
.CDB
[2] = page_code
;
2588 c
->Request
.CDBLen
= 6;
2589 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2590 c
->Request
.Type
.Direction
= XFER_READ
;
2591 c
->Request
.Timeout
= 0;
2592 c
->Request
.CDB
[0] = CISS_INQUIRY
;
2593 c
->Request
.CDB
[4] = size
& 0xFF;
2595 case CISS_REPORT_LOG
:
2596 case CISS_REPORT_PHYS
:
2597 /* Talking to controller so It's a physical command
2598 mode = 00 target = 0. Nothing to write.
2600 c
->Request
.CDBLen
= 12;
2601 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2602 c
->Request
.Type
.Direction
= XFER_READ
;
2603 c
->Request
.Timeout
= 0;
2604 c
->Request
.CDB
[0] = cmd
;
2605 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2606 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2607 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2608 c
->Request
.CDB
[9] = size
& 0xFF;
2611 case CCISS_READ_CAPACITY
:
2612 c
->Request
.CDBLen
= 10;
2613 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2614 c
->Request
.Type
.Direction
= XFER_READ
;
2615 c
->Request
.Timeout
= 0;
2616 c
->Request
.CDB
[0] = cmd
;
2618 case CCISS_READ_CAPACITY_16
:
2619 c
->Request
.CDBLen
= 16;
2620 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2621 c
->Request
.Type
.Direction
= XFER_READ
;
2622 c
->Request
.Timeout
= 0;
2623 c
->Request
.CDB
[0] = cmd
;
2624 c
->Request
.CDB
[1] = 0x10;
2625 c
->Request
.CDB
[10] = (size
>> 24) & 0xFF;
2626 c
->Request
.CDB
[11] = (size
>> 16) & 0xFF;
2627 c
->Request
.CDB
[12] = (size
>> 8) & 0xFF;
2628 c
->Request
.CDB
[13] = size
& 0xFF;
2629 c
->Request
.Timeout
= 0;
2630 c
->Request
.CDB
[0] = cmd
;
2632 case CCISS_CACHE_FLUSH
:
2633 c
->Request
.CDBLen
= 12;
2634 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2635 c
->Request
.Type
.Direction
= XFER_WRITE
;
2636 c
->Request
.Timeout
= 0;
2637 c
->Request
.CDB
[0] = BMIC_WRITE
;
2638 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2639 c
->Request
.CDB
[7] = (size
>> 8) & 0xFF;
2640 c
->Request
.CDB
[8] = size
& 0xFF;
2642 case TEST_UNIT_READY
:
2643 c
->Request
.CDBLen
= 6;
2644 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2645 c
->Request
.Type
.Direction
= XFER_NONE
;
2646 c
->Request
.Timeout
= 0;
2649 dev_warn(&h
->pdev
->dev
, "Unknown Command 0x%c\n", cmd
);
2652 } else if (cmd_type
== TYPE_MSG
) {
2654 case CCISS_ABORT_MSG
:
2655 c
->Request
.CDBLen
= 12;
2656 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2657 c
->Request
.Type
.Direction
= XFER_WRITE
;
2658 c
->Request
.Timeout
= 0;
2659 c
->Request
.CDB
[0] = cmd
; /* abort */
2660 c
->Request
.CDB
[1] = 0; /* abort a command */
2661 /* buff contains the tag of the command to abort */
2662 memcpy(&c
->Request
.CDB
[4], buff
, 8);
2664 case CCISS_RESET_MSG
:
2665 c
->Request
.CDBLen
= 16;
2666 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2667 c
->Request
.Type
.Direction
= XFER_NONE
;
2668 c
->Request
.Timeout
= 0;
2669 memset(&c
->Request
.CDB
[0], 0, sizeof(c
->Request
.CDB
));
2670 c
->Request
.CDB
[0] = cmd
; /* reset */
2671 c
->Request
.CDB
[1] = CCISS_RESET_TYPE_TARGET
;
2673 case CCISS_NOOP_MSG
:
2674 c
->Request
.CDBLen
= 1;
2675 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2676 c
->Request
.Type
.Direction
= XFER_WRITE
;
2677 c
->Request
.Timeout
= 0;
2678 c
->Request
.CDB
[0] = cmd
;
2681 dev_warn(&h
->pdev
->dev
,
2682 "unknown message type %d\n", cmd
);
2686 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2689 /* Fill in the scatter gather information */
2691 buff_dma_handle
.val
= (__u64
) pci_map_single(h
->pdev
,
2693 PCI_DMA_BIDIRECTIONAL
);
2694 c
->SG
[0].Addr
.lower
= buff_dma_handle
.val32
.lower
;
2695 c
->SG
[0].Addr
.upper
= buff_dma_handle
.val32
.upper
;
2696 c
->SG
[0].Len
= size
;
2697 c
->SG
[0].Ext
= 0; /* we are not chaining */
2702 static int cciss_send_reset(ctlr_info_t
*h
, unsigned char *scsi3addr
,
2705 CommandList_struct
*c
;
2711 return_status
= fill_cmd(h
, c
, CCISS_RESET_MSG
, NULL
, 0, 0,
2712 CTLR_LUNID
, TYPE_MSG
);
2713 c
->Request
.CDB
[1] = reset_type
; /* fill_cmd defaults to target reset */
2714 if (return_status
!= IO_OK
) {
2715 cmd_special_free(h
, c
);
2716 return return_status
;
2719 enqueue_cmd_and_start_io(h
, c
);
2720 /* Don't wait for completion, the reset won't complete. Don't free
2721 * the command either. This is the last command we will send before
2722 * re-initializing everything, so it doesn't matter and won't leak.
2727 static int check_target_status(ctlr_info_t
*h
, CommandList_struct
*c
)
2729 switch (c
->err_info
->ScsiStatus
) {
2732 case SAM_STAT_CHECK_CONDITION
:
2733 switch (0xf & c
->err_info
->SenseInfo
[2]) {
2734 case 0: return IO_OK
; /* no sense */
2735 case 1: return IO_OK
; /* recovered error */
2737 if (check_for_unit_attention(h
, c
))
2738 return IO_NEEDS_RETRY
;
2739 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x "
2740 "check condition, sense key = 0x%02x\n",
2741 c
->Request
.CDB
[0], c
->err_info
->SenseInfo
[2]);
2745 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x"
2746 "scsi status = 0x%02x\n",
2747 c
->Request
.CDB
[0], c
->err_info
->ScsiStatus
);
2753 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
)
2755 int return_status
= IO_OK
;
2757 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2760 switch (c
->err_info
->CommandStatus
) {
2761 case CMD_TARGET_STATUS
:
2762 return_status
= check_target_status(h
, c
);
2764 case CMD_DATA_UNDERRUN
:
2765 case CMD_DATA_OVERRUN
:
2766 /* expected for inquiry and report lun commands */
2769 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x is "
2770 "reported invalid\n", c
->Request
.CDB
[0]);
2771 return_status
= IO_ERROR
;
2773 case CMD_PROTOCOL_ERR
:
2774 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x has "
2775 "protocol error\n", c
->Request
.CDB
[0]);
2776 return_status
= IO_ERROR
;
2778 case CMD_HARDWARE_ERR
:
2779 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2780 " hardware error\n", c
->Request
.CDB
[0]);
2781 return_status
= IO_ERROR
;
2783 case CMD_CONNECTION_LOST
:
2784 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2785 "connection lost\n", c
->Request
.CDB
[0]);
2786 return_status
= IO_ERROR
;
2789 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x was "
2790 "aborted\n", c
->Request
.CDB
[0]);
2791 return_status
= IO_ERROR
;
2793 case CMD_ABORT_FAILED
:
2794 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x reports "
2795 "abort failed\n", c
->Request
.CDB
[0]);
2796 return_status
= IO_ERROR
;
2798 case CMD_UNSOLICITED_ABORT
:
2799 dev_warn(&h
->pdev
->dev
, "unsolicited abort 0x%02x\n",
2801 return_status
= IO_NEEDS_RETRY
;
2803 case CMD_UNABORTABLE
:
2804 dev_warn(&h
->pdev
->dev
, "cmd unabortable\n");
2805 return_status
= IO_ERROR
;
2808 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x returned "
2809 "unknown status %x\n", c
->Request
.CDB
[0],
2810 c
->err_info
->CommandStatus
);
2811 return_status
= IO_ERROR
;
2813 return return_status
;
2816 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
2819 DECLARE_COMPLETION_ONSTACK(wait
);
2820 u64bit buff_dma_handle
;
2821 int return_status
= IO_OK
;
2825 enqueue_cmd_and_start_io(h
, c
);
2827 wait_for_completion(&wait
);
2829 if (c
->err_info
->CommandStatus
== 0 || !attempt_retry
)
2832 return_status
= process_sendcmd_error(h
, c
);
2834 if (return_status
== IO_NEEDS_RETRY
&&
2835 c
->retry_count
< MAX_CMD_RETRIES
) {
2836 dev_warn(&h
->pdev
->dev
, "retrying 0x%02x\n",
2839 /* erase the old error information */
2840 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
2841 return_status
= IO_OK
;
2842 reinit_completion(&wait
);
2847 /* unlock the buffers from DMA */
2848 buff_dma_handle
.val32
.lower
= c
->SG
[0].Addr
.lower
;
2849 buff_dma_handle
.val32
.upper
= c
->SG
[0].Addr
.upper
;
2850 pci_unmap_single(h
->pdev
, (dma_addr_t
) buff_dma_handle
.val
,
2851 c
->SG
[0].Len
, PCI_DMA_BIDIRECTIONAL
);
2852 return return_status
;
2855 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
2856 __u8 page_code
, unsigned char scsi3addr
[],
2859 CommandList_struct
*c
;
2862 c
= cmd_special_alloc(h
);
2865 return_status
= fill_cmd(h
, c
, cmd
, buff
, size
, page_code
,
2866 scsi3addr
, cmd_type
);
2867 if (return_status
== IO_OK
)
2868 return_status
= sendcmd_withirq_core(h
, c
, 1);
2870 cmd_special_free(h
, c
);
2871 return return_status
;
2874 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
2875 sector_t total_size
,
2876 unsigned int block_size
,
2877 InquiryData_struct
*inq_buff
,
2878 drive_info_struct
*drv
)
2882 unsigned char scsi3addr
[8];
2884 memset(inq_buff
, 0, sizeof(InquiryData_struct
));
2885 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2886 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
2887 sizeof(*inq_buff
), 0xC1, scsi3addr
, TYPE_CMD
);
2888 if (return_code
== IO_OK
) {
2889 if (inq_buff
->data_byte
[8] == 0xFF) {
2890 dev_warn(&h
->pdev
->dev
,
2891 "reading geometry failed, volume "
2892 "does not support reading geometry\n");
2894 drv
->sectors
= 32; /* Sectors per track */
2895 drv
->cylinders
= total_size
+ 1;
2896 drv
->raid_level
= RAID_UNKNOWN
;
2898 drv
->heads
= inq_buff
->data_byte
[6];
2899 drv
->sectors
= inq_buff
->data_byte
[7];
2900 drv
->cylinders
= (inq_buff
->data_byte
[4] & 0xff) << 8;
2901 drv
->cylinders
+= inq_buff
->data_byte
[5];
2902 drv
->raid_level
= inq_buff
->data_byte
[8];
2904 drv
->block_size
= block_size
;
2905 drv
->nr_blocks
= total_size
+ 1;
2906 t
= drv
->heads
* drv
->sectors
;
2908 sector_t real_size
= total_size
+ 1;
2909 unsigned long rem
= sector_div(real_size
, t
);
2912 drv
->cylinders
= real_size
;
2914 } else { /* Get geometry failed */
2915 dev_warn(&h
->pdev
->dev
, "reading geometry failed\n");
2920 cciss_read_capacity(ctlr_info_t
*h
, int logvol
, sector_t
*total_size
,
2921 unsigned int *block_size
)
2923 ReadCapdata_struct
*buf
;
2925 unsigned char scsi3addr
[8];
2927 buf
= kzalloc(sizeof(ReadCapdata_struct
), GFP_KERNEL
);
2929 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2933 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2934 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY
, buf
,
2935 sizeof(ReadCapdata_struct
), 0, scsi3addr
, TYPE_CMD
);
2936 if (return_code
== IO_OK
) {
2937 *total_size
= be32_to_cpu(*(__be32
*) buf
->total_size
);
2938 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2939 } else { /* read capacity command failed */
2940 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2942 *block_size
= BLOCK_SIZE
;
2947 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
2948 sector_t
*total_size
, unsigned int *block_size
)
2950 ReadCapdata_struct_16
*buf
;
2952 unsigned char scsi3addr
[8];
2954 buf
= kzalloc(sizeof(ReadCapdata_struct_16
), GFP_KERNEL
);
2956 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2960 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2961 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY_16
,
2962 buf
, sizeof(ReadCapdata_struct_16
),
2963 0, scsi3addr
, TYPE_CMD
);
2964 if (return_code
== IO_OK
) {
2965 *total_size
= be64_to_cpu(*(__be64
*) buf
->total_size
);
2966 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2967 } else { /* read capacity command failed */
2968 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2970 *block_size
= BLOCK_SIZE
;
2972 dev_info(&h
->pdev
->dev
, " blocks= %llu block_size= %d\n",
2973 (unsigned long long)*total_size
+1, *block_size
);
2977 static int cciss_revalidate(struct gendisk
*disk
)
2979 ctlr_info_t
*h
= get_host(disk
);
2980 drive_info_struct
*drv
= get_drv(disk
);
2983 unsigned int block_size
;
2984 sector_t total_size
;
2985 InquiryData_struct
*inq_buff
= NULL
;
2987 for (logvol
= 0; logvol
<= h
->highest_lun
; logvol
++) {
2988 if (!h
->drv
[logvol
])
2990 if (memcmp(h
->drv
[logvol
]->LunID
, drv
->LunID
,
2991 sizeof(drv
->LunID
)) == 0) {
3000 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
3001 if (inq_buff
== NULL
) {
3002 dev_warn(&h
->pdev
->dev
, "out of memory\n");
3005 if (h
->cciss_read
== CCISS_READ_10
) {
3006 cciss_read_capacity(h
, logvol
,
3007 &total_size
, &block_size
);
3009 cciss_read_capacity_16(h
, logvol
,
3010 &total_size
, &block_size
);
3012 cciss_geometry_inquiry(h
, logvol
, total_size
, block_size
,
3015 blk_queue_logical_block_size(drv
->queue
, drv
->block_size
);
3016 set_capacity(disk
, drv
->nr_blocks
);
3023 * Map (physical) PCI mem into (virtual) kernel space
3025 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
3027 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
3028 ulong page_offs
= ((ulong
) base
) - page_base
;
3029 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
3031 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
3035 * Takes jobs of the Q and sends them to the hardware, then puts it on
3036 * the Q to wait for completion.
3038 static void start_io(ctlr_info_t
*h
)
3040 CommandList_struct
*c
;
3042 while (!list_empty(&h
->reqQ
)) {
3043 c
= list_entry(h
->reqQ
.next
, CommandList_struct
, list
);
3044 /* can't do anything if fifo is full */
3045 if ((h
->access
.fifo_full(h
))) {
3046 dev_warn(&h
->pdev
->dev
, "fifo full\n");
3050 /* Get the first entry from the Request Q */
3054 /* Tell the controller execute command */
3055 h
->access
.submit_command(h
, c
);
3057 /* Put job onto the completed Q */
3062 /* Assumes that h->lock is held. */
3063 /* Zeros out the error record and then resends the command back */
3064 /* to the controller */
3065 static inline void resend_cciss_cmd(ctlr_info_t
*h
, CommandList_struct
*c
)
3067 /* erase the old error information */
3068 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
3070 /* add it to software queue and then send it to the controller */
3073 if (h
->Qdepth
> h
->maxQsinceinit
)
3074 h
->maxQsinceinit
= h
->Qdepth
;
3079 static inline unsigned int make_status_bytes(unsigned int scsi_status_byte
,
3080 unsigned int msg_byte
, unsigned int host_byte
,
3081 unsigned int driver_byte
)
3083 /* inverse of macros in scsi.h */
3084 return (scsi_status_byte
& 0xff) |
3085 ((msg_byte
& 0xff) << 8) |
3086 ((host_byte
& 0xff) << 16) |
3087 ((driver_byte
& 0xff) << 24);
3090 static inline int evaluate_target_status(ctlr_info_t
*h
,
3091 CommandList_struct
*cmd
, int *retry_cmd
)
3093 unsigned char sense_key
;
3094 unsigned char status_byte
, msg_byte
, host_byte
, driver_byte
;
3098 /* If we get in here, it means we got "target status", that is, scsi status */
3099 status_byte
= cmd
->err_info
->ScsiStatus
;
3100 driver_byte
= DRIVER_OK
;
3101 msg_byte
= cmd
->err_info
->CommandStatus
; /* correct? seems too device specific */
3103 if (blk_rq_is_passthrough(cmd
->rq
))
3104 host_byte
= DID_PASSTHROUGH
;
3108 error_value
= make_status_bytes(status_byte
, msg_byte
,
3109 host_byte
, driver_byte
);
3111 if (cmd
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
) {
3112 if (!blk_rq_is_passthrough(cmd
->rq
))
3113 dev_warn(&h
->pdev
->dev
, "cmd %p "
3114 "has SCSI Status 0x%x\n",
3115 cmd
, cmd
->err_info
->ScsiStatus
);
3119 /* check the sense key */
3120 sense_key
= 0xf & cmd
->err_info
->SenseInfo
[2];
3121 /* no status or recovered error */
3122 if (((sense_key
== 0x0) || (sense_key
== 0x1)) &&
3123 !blk_rq_is_passthrough(cmd
->rq
))
3126 if (check_for_unit_attention(h
, cmd
)) {
3127 *retry_cmd
= !blk_rq_is_passthrough(cmd
->rq
);
3131 /* Not SG_IO or similar? */
3132 if (!blk_rq_is_passthrough(cmd
->rq
)) {
3133 if (error_value
!= 0)
3134 dev_warn(&h
->pdev
->dev
, "cmd %p has CHECK CONDITION"
3135 " sense key = 0x%x\n", cmd
, sense_key
);
3139 scsi_req(cmd
->rq
)->sense_len
= cmd
->err_info
->SenseLen
;
3143 /* checks the status of the job and calls complete buffers to mark all
3144 * buffers for the completed job. Note that this function does not need
3145 * to hold the hba/queue lock.
3147 static inline void complete_command(ctlr_info_t
*h
, CommandList_struct
*cmd
,
3151 struct request
*rq
= cmd
->rq
;
3152 struct scsi_request
*sreq
= scsi_req(rq
);
3157 sreq
->result
= make_status_bytes(0, 0, 0, DRIVER_TIMEOUT
);
3159 if (cmd
->err_info
->CommandStatus
== 0) /* no error has occurred */
3160 goto after_error_processing
;
3162 switch (cmd
->err_info
->CommandStatus
) {
3163 case CMD_TARGET_STATUS
:
3164 sreq
->result
= evaluate_target_status(h
, cmd
, &retry_cmd
);
3166 case CMD_DATA_UNDERRUN
:
3167 if (!blk_rq_is_passthrough(cmd
->rq
)) {
3168 dev_warn(&h
->pdev
->dev
, "cmd %p has"
3169 " completed with data underrun "
3173 case CMD_DATA_OVERRUN
:
3174 if (!blk_rq_is_passthrough(cmd
->rq
))
3175 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has"
3176 " completed with data overrun "
3180 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p is "
3181 "reported invalid\n", cmd
);
3182 sreq
->result
= make_status_bytes(SAM_STAT_GOOD
,
3183 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3184 blk_rq_is_passthrough(cmd
->rq
) ?
3185 DID_PASSTHROUGH
: DID_ERROR
);
3187 case CMD_PROTOCOL_ERR
:
3188 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has "
3189 "protocol error\n", cmd
);
3190 sreq
->result
= make_status_bytes(SAM_STAT_GOOD
,
3191 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3192 blk_rq_is_passthrough(cmd
->rq
) ?
3193 DID_PASSTHROUGH
: DID_ERROR
);
3195 case CMD_HARDWARE_ERR
:
3196 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3197 " hardware error\n", cmd
);
3198 sreq
->result
= make_status_bytes(SAM_STAT_GOOD
,
3199 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3200 blk_rq_is_passthrough(cmd
->rq
) ?
3201 DID_PASSTHROUGH
: DID_ERROR
);
3203 case CMD_CONNECTION_LOST
:
3204 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3205 "connection lost\n", cmd
);
3206 sreq
->result
= make_status_bytes(SAM_STAT_GOOD
,
3207 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3208 blk_rq_is_passthrough(cmd
->rq
) ?
3209 DID_PASSTHROUGH
: DID_ERROR
);
3212 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p was "
3214 sreq
->result
= make_status_bytes(SAM_STAT_GOOD
,
3215 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3216 blk_rq_is_passthrough(cmd
->rq
) ?
3217 DID_PASSTHROUGH
: DID_ABORT
);
3219 case CMD_ABORT_FAILED
:
3220 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p reports "
3221 "abort failed\n", cmd
);
3222 sreq
->result
= make_status_bytes(SAM_STAT_GOOD
,
3223 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3224 blk_rq_is_passthrough(cmd
->rq
) ?
3225 DID_PASSTHROUGH
: DID_ERROR
);
3227 case CMD_UNSOLICITED_ABORT
:
3228 dev_warn(&h
->pdev
->dev
, "cciss%d: unsolicited "
3229 "abort %p\n", h
->ctlr
, cmd
);
3230 if (cmd
->retry_count
< MAX_CMD_RETRIES
) {
3232 dev_warn(&h
->pdev
->dev
, "retrying %p\n", cmd
);
3235 dev_warn(&h
->pdev
->dev
,
3236 "%p retried too many times\n", cmd
);
3237 sreq
->result
= make_status_bytes(SAM_STAT_GOOD
,
3238 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3239 blk_rq_is_passthrough(cmd
->rq
) ?
3240 DID_PASSTHROUGH
: DID_ABORT
);
3243 dev_warn(&h
->pdev
->dev
, "cmd %p timedout\n", cmd
);
3244 sreq
->result
= make_status_bytes(SAM_STAT_GOOD
,
3245 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3246 blk_rq_is_passthrough(cmd
->rq
) ?
3247 DID_PASSTHROUGH
: DID_ERROR
);
3249 case CMD_UNABORTABLE
:
3250 dev_warn(&h
->pdev
->dev
, "cmd %p unabortable\n", cmd
);
3251 sreq
->result
= make_status_bytes(SAM_STAT_GOOD
,
3252 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3253 blk_rq_is_passthrough(cmd
->rq
) ?
3254 DID_PASSTHROUGH
: DID_ERROR
);
3257 dev_warn(&h
->pdev
->dev
, "cmd %p returned "
3258 "unknown status %x\n", cmd
,
3259 cmd
->err_info
->CommandStatus
);
3260 sreq
->result
= make_status_bytes(SAM_STAT_GOOD
,
3261 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3262 blk_rq_is_passthrough(cmd
->rq
) ?
3263 DID_PASSTHROUGH
: DID_ERROR
);
3266 after_error_processing
:
3268 /* We need to return this command */
3270 resend_cciss_cmd(h
, cmd
);
3273 cmd
->rq
->completion_data
= cmd
;
3274 blk_complete_request(cmd
->rq
);
3277 static inline u32
cciss_tag_contains_index(u32 tag
)
3279 #define DIRECT_LOOKUP_BIT 0x10
3280 return tag
& DIRECT_LOOKUP_BIT
;
3283 static inline u32
cciss_tag_to_index(u32 tag
)
3285 #define DIRECT_LOOKUP_SHIFT 5
3286 return tag
>> DIRECT_LOOKUP_SHIFT
;
3289 static inline u32
cciss_tag_discard_error_bits(ctlr_info_t
*h
, u32 tag
)
3291 #define CCISS_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
3292 #define CCISS_SIMPLE_ERROR_BITS 0x03
3293 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
3294 return tag
& ~CCISS_PERF_ERROR_BITS
;
3295 return tag
& ~CCISS_SIMPLE_ERROR_BITS
;
3298 static inline void cciss_mark_tag_indexed(u32
*tag
)
3300 *tag
|= DIRECT_LOOKUP_BIT
;
3303 static inline void cciss_set_tag_index(u32
*tag
, u32 index
)
3305 *tag
|= (index
<< DIRECT_LOOKUP_SHIFT
);
3309 * Get a request and submit it to the controller.
3311 static void do_cciss_request(struct request_queue
*q
)
3313 ctlr_info_t
*h
= q
->queuedata
;
3314 CommandList_struct
*c
;
3317 struct request
*creq
;
3319 struct scatterlist
*tmp_sg
;
3320 SGDescriptor_struct
*curr_sg
;
3321 drive_info_struct
*drv
;
3327 creq
= blk_peek_request(q
);
3331 BUG_ON(creq
->nr_phys_segments
> h
->maxsgentries
);
3337 blk_start_request(creq
);
3339 tmp_sg
= h
->scatter_list
[c
->cmdindex
];
3340 spin_unlock_irq(q
->queue_lock
);
3342 c
->cmd_type
= CMD_RWREQ
;
3345 /* fill in the request */
3346 drv
= creq
->rq_disk
->private_data
;
3347 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
3348 /* got command from pool, so use the command block index instead */
3349 /* for direct lookups. */
3350 /* The first 2 bits are reserved for controller error reporting. */
3351 cciss_set_tag_index(&c
->Header
.Tag
.lower
, c
->cmdindex
);
3352 cciss_mark_tag_indexed(&c
->Header
.Tag
.lower
);
3353 memcpy(&c
->Header
.LUN
, drv
->LunID
, sizeof(drv
->LunID
));
3354 c
->Request
.CDBLen
= 10; /* 12 byte commands not in FW yet; */
3355 c
->Request
.Type
.Type
= TYPE_CMD
; /* It is a command. */
3356 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3357 c
->Request
.Type
.Direction
=
3358 (rq_data_dir(creq
) == READ
) ? XFER_READ
: XFER_WRITE
;
3359 c
->Request
.Timeout
= 0; /* Don't time out */
3361 (rq_data_dir(creq
) == READ
) ? h
->cciss_read
: h
->cciss_write
;
3362 start_blk
= blk_rq_pos(creq
);
3363 dev_dbg(&h
->pdev
->dev
, "sector =%d nr_sectors=%d\n",
3364 (int)blk_rq_pos(creq
), (int)blk_rq_sectors(creq
));
3365 sg_init_table(tmp_sg
, h
->maxsgentries
);
3366 seg
= blk_rq_map_sg(q
, creq
, tmp_sg
);
3368 /* get the DMA records for the setup */
3369 if (c
->Request
.Type
.Direction
== XFER_READ
)
3370 dir
= PCI_DMA_FROMDEVICE
;
3372 dir
= PCI_DMA_TODEVICE
;
3378 for (i
= 0; i
< seg
; i
++) {
3379 if (((sg_index
+1) == (h
->max_cmd_sgentries
)) &&
3380 !chained
&& ((seg
- i
) > 1)) {
3381 /* Point to next chain block. */
3382 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
3386 curr_sg
[sg_index
].Len
= tmp_sg
[i
].length
;
3387 temp64
.val
= (__u64
) pci_map_page(h
->pdev
, sg_page(&tmp_sg
[i
]),
3389 tmp_sg
[i
].length
, dir
);
3390 if (dma_mapping_error(&h
->pdev
->dev
, temp64
.val
)) {
3391 dev_warn(&h
->pdev
->dev
,
3392 "%s: error mapping page for DMA\n", __func__
);
3393 scsi_req(creq
)->result
=
3394 make_status_bytes(SAM_STAT_GOOD
, 0, DRIVER_OK
,
3399 curr_sg
[sg_index
].Addr
.lower
= temp64
.val32
.lower
;
3400 curr_sg
[sg_index
].Addr
.upper
= temp64
.val32
.upper
;
3401 curr_sg
[sg_index
].Ext
= 0; /* we are not chaining */
3405 if (cciss_map_sg_chain_block(h
, c
, h
->cmd_sg_list
[c
->cmdindex
],
3406 (seg
- (h
->max_cmd_sgentries
- 1)) *
3407 sizeof(SGDescriptor_struct
))) {
3408 scsi_req(creq
)->result
=
3409 make_status_bytes(SAM_STAT_GOOD
, 0, DRIVER_OK
,
3416 /* track how many SG entries we are using */
3420 dev_dbg(&h
->pdev
->dev
, "Submitting %u sectors in %d segments "
3422 blk_rq_sectors(creq
), seg
, chained
);
3424 c
->Header
.SGTotal
= seg
+ chained
;
3425 if (seg
<= h
->max_cmd_sgentries
)
3426 c
->Header
.SGList
= c
->Header
.SGTotal
;
3428 c
->Header
.SGList
= h
->max_cmd_sgentries
;
3429 set_performant_mode(h
, c
);
3431 switch (req_op(creq
)) {
3434 if(h
->cciss_read
== CCISS_READ_10
) {
3435 c
->Request
.CDB
[1] = 0;
3436 c
->Request
.CDB
[2] = (start_blk
>> 24) & 0xff; /* MSB */
3437 c
->Request
.CDB
[3] = (start_blk
>> 16) & 0xff;
3438 c
->Request
.CDB
[4] = (start_blk
>> 8) & 0xff;
3439 c
->Request
.CDB
[5] = start_blk
& 0xff;
3440 c
->Request
.CDB
[6] = 0; /* (sect >> 24) & 0xff; MSB */
3441 c
->Request
.CDB
[7] = (blk_rq_sectors(creq
) >> 8) & 0xff;
3442 c
->Request
.CDB
[8] = blk_rq_sectors(creq
) & 0xff;
3443 c
->Request
.CDB
[9] = c
->Request
.CDB
[11] = c
->Request
.CDB
[12] = 0;
3445 u32 upper32
= upper_32_bits(start_blk
);
3447 c
->Request
.CDBLen
= 16;
3448 c
->Request
.CDB
[1]= 0;
3449 c
->Request
.CDB
[2]= (upper32
>> 24) & 0xff; /* MSB */
3450 c
->Request
.CDB
[3]= (upper32
>> 16) & 0xff;
3451 c
->Request
.CDB
[4]= (upper32
>> 8) & 0xff;
3452 c
->Request
.CDB
[5]= upper32
& 0xff;
3453 c
->Request
.CDB
[6]= (start_blk
>> 24) & 0xff;
3454 c
->Request
.CDB
[7]= (start_blk
>> 16) & 0xff;
3455 c
->Request
.CDB
[8]= (start_blk
>> 8) & 0xff;
3456 c
->Request
.CDB
[9]= start_blk
& 0xff;
3457 c
->Request
.CDB
[10]= (blk_rq_sectors(creq
) >> 24) & 0xff;
3458 c
->Request
.CDB
[11]= (blk_rq_sectors(creq
) >> 16) & 0xff;
3459 c
->Request
.CDB
[12]= (blk_rq_sectors(creq
) >> 8) & 0xff;
3460 c
->Request
.CDB
[13]= blk_rq_sectors(creq
) & 0xff;
3461 c
->Request
.CDB
[14] = c
->Request
.CDB
[15] = 0;
3464 case REQ_OP_SCSI_IN
:
3465 case REQ_OP_SCSI_OUT
:
3466 c
->Request
.CDBLen
= scsi_req(creq
)->cmd_len
;
3467 memcpy(c
->Request
.CDB
, scsi_req(creq
)->cmd
, BLK_MAX_CDB
);
3468 scsi_req(creq
)->sense
= c
->err_info
->SenseInfo
;
3471 dev_warn(&h
->pdev
->dev
, "bad request type %d\n",
3476 spin_lock_irq(q
->queue_lock
);
3480 if (h
->Qdepth
> h
->maxQsinceinit
)
3481 h
->maxQsinceinit
= h
->Qdepth
;
3487 /* We will already have the driver lock here so not need
3493 static inline unsigned long get_next_completion(ctlr_info_t
*h
)
3495 return h
->access
.command_completed(h
);
3498 static inline int interrupt_pending(ctlr_info_t
*h
)
3500 return h
->access
.intr_pending(h
);
3503 static inline long interrupt_not_for_us(ctlr_info_t
*h
)
3505 return ((h
->access
.intr_pending(h
) == 0) ||
3506 (h
->interrupts_enabled
== 0));
3509 static inline int bad_tag(ctlr_info_t
*h
, u32 tag_index
,
3512 if (unlikely(tag_index
>= h
->nr_cmds
)) {
3513 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
3519 static inline void finish_cmd(ctlr_info_t
*h
, CommandList_struct
*c
,
3523 if (likely(c
->cmd_type
== CMD_RWREQ
))
3524 complete_command(h
, c
, 0);
3525 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3526 complete(c
->waiting
);
3527 #ifdef CONFIG_CISS_SCSI_TAPE
3528 else if (c
->cmd_type
== CMD_SCSI
)
3529 complete_scsi_command(c
, 0, raw_tag
);
3533 static inline u32
next_command(ctlr_info_t
*h
)
3537 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
3538 return h
->access
.command_completed(h
);
3540 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
3541 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
3542 (h
->reply_pool_head
)++;
3543 h
->commands_outstanding
--;
3547 /* Check for wraparound */
3548 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
3549 h
->reply_pool_head
= h
->reply_pool
;
3550 h
->reply_pool_wraparound
^= 1;
3555 /* process completion of an indexed ("direct lookup") command */
3556 static inline u32
process_indexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3559 CommandList_struct
*c
;
3561 tag_index
= cciss_tag_to_index(raw_tag
);
3562 if (bad_tag(h
, tag_index
, raw_tag
))
3563 return next_command(h
);
3564 c
= h
->cmd_pool
+ tag_index
;
3565 finish_cmd(h
, c
, raw_tag
);
3566 return next_command(h
);
3569 /* process completion of a non-indexed command */
3570 static inline u32
process_nonindexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3572 CommandList_struct
*c
= NULL
;
3573 __u32 busaddr_masked
, tag_masked
;
3575 tag_masked
= cciss_tag_discard_error_bits(h
, raw_tag
);
3576 list_for_each_entry(c
, &h
->cmpQ
, list
) {
3577 busaddr_masked
= cciss_tag_discard_error_bits(h
, c
->busaddr
);
3578 if (busaddr_masked
== tag_masked
) {
3579 finish_cmd(h
, c
, raw_tag
);
3580 return next_command(h
);
3583 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3584 return next_command(h
);
3587 /* Some controllers, like p400, will give us one interrupt
3588 * after a soft reset, even if we turned interrupts off.
3589 * Only need to check for this in the cciss_xxx_discard_completions
3592 static int ignore_bogus_interrupt(ctlr_info_t
*h
)
3594 if (likely(!reset_devices
))
3597 if (likely(h
->interrupts_enabled
))
3600 dev_info(&h
->pdev
->dev
, "Received interrupt while interrupts disabled "
3601 "(known firmware bug.) Ignoring.\n");
3606 static irqreturn_t
cciss_intx_discard_completions(int irq
, void *dev_id
)
3608 ctlr_info_t
*h
= dev_id
;
3609 unsigned long flags
;
3612 if (ignore_bogus_interrupt(h
))
3615 if (interrupt_not_for_us(h
))
3617 spin_lock_irqsave(&h
->lock
, flags
);
3618 while (interrupt_pending(h
)) {
3619 raw_tag
= get_next_completion(h
);
3620 while (raw_tag
!= FIFO_EMPTY
)
3621 raw_tag
= next_command(h
);
3623 spin_unlock_irqrestore(&h
->lock
, flags
);
3627 static irqreturn_t
cciss_msix_discard_completions(int irq
, void *dev_id
)
3629 ctlr_info_t
*h
= dev_id
;
3630 unsigned long flags
;
3633 if (ignore_bogus_interrupt(h
))
3636 spin_lock_irqsave(&h
->lock
, flags
);
3637 raw_tag
= get_next_completion(h
);
3638 while (raw_tag
!= FIFO_EMPTY
)
3639 raw_tag
= next_command(h
);
3640 spin_unlock_irqrestore(&h
->lock
, flags
);
3644 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
)
3646 ctlr_info_t
*h
= dev_id
;
3647 unsigned long flags
;
3650 if (interrupt_not_for_us(h
))
3652 spin_lock_irqsave(&h
->lock
, flags
);
3653 while (interrupt_pending(h
)) {
3654 raw_tag
= get_next_completion(h
);
3655 while (raw_tag
!= FIFO_EMPTY
) {
3656 if (cciss_tag_contains_index(raw_tag
))
3657 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3659 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3662 spin_unlock_irqrestore(&h
->lock
, flags
);
3666 /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never
3667 * check the interrupt pending register because it is not set.
3669 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
)
3671 ctlr_info_t
*h
= dev_id
;
3672 unsigned long flags
;
3675 spin_lock_irqsave(&h
->lock
, flags
);
3676 raw_tag
= get_next_completion(h
);
3677 while (raw_tag
!= FIFO_EMPTY
) {
3678 if (cciss_tag_contains_index(raw_tag
))
3679 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3681 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3683 spin_unlock_irqrestore(&h
->lock
, flags
);
3688 * add_to_scan_list() - add controller to rescan queue
3689 * @h: Pointer to the controller.
3691 * Adds the controller to the rescan queue if not already on the queue.
3693 * returns 1 if added to the queue, 0 if skipped (could be on the
3694 * queue already, or the controller could be initializing or shutting
3697 static int add_to_scan_list(struct ctlr_info
*h
)
3699 struct ctlr_info
*test_h
;
3703 if (h
->busy_initializing
)
3706 if (!mutex_trylock(&h
->busy_shutting_down
))
3709 mutex_lock(&scan_mutex
);
3710 list_for_each_entry(test_h
, &scan_q
, scan_list
) {
3716 if (!found
&& !h
->busy_scanning
) {
3717 reinit_completion(&h
->scan_wait
);
3718 list_add_tail(&h
->scan_list
, &scan_q
);
3721 mutex_unlock(&scan_mutex
);
3722 mutex_unlock(&h
->busy_shutting_down
);
3728 * remove_from_scan_list() - remove controller from rescan queue
3729 * @h: Pointer to the controller.
3731 * Removes the controller from the rescan queue if present. Blocks if
3732 * the controller is currently conducting a rescan. The controller
3733 * can be in one of three states:
3734 * 1. Doesn't need a scan
3735 * 2. On the scan list, but not scanning yet (we remove it)
3736 * 3. Busy scanning (and not on the list). In this case we want to wait for
3737 * the scan to complete to make sure the scanning thread for this
3738 * controller is completely idle.
3740 static void remove_from_scan_list(struct ctlr_info
*h
)
3742 struct ctlr_info
*test_h
, *tmp_h
;
3744 mutex_lock(&scan_mutex
);
3745 list_for_each_entry_safe(test_h
, tmp_h
, &scan_q
, scan_list
) {
3746 if (test_h
== h
) { /* state 2. */
3747 list_del(&h
->scan_list
);
3748 complete_all(&h
->scan_wait
);
3749 mutex_unlock(&scan_mutex
);
3753 if (h
->busy_scanning
) { /* state 3. */
3754 mutex_unlock(&scan_mutex
);
3755 wait_for_completion(&h
->scan_wait
);
3756 } else { /* state 1, nothing to do. */
3757 mutex_unlock(&scan_mutex
);
3762 * scan_thread() - kernel thread used to rescan controllers
3765 * A kernel thread used scan for drive topology changes on
3766 * controllers. The thread processes only one controller at a time
3767 * using a queue. Controllers are added to the queue using
3768 * add_to_scan_list() and removed from the queue either after done
3769 * processing or using remove_from_scan_list().
3773 static int scan_thread(void *data
)
3775 struct ctlr_info
*h
;
3778 set_current_state(TASK_INTERRUPTIBLE
);
3780 if (kthread_should_stop())
3784 mutex_lock(&scan_mutex
);
3785 if (list_empty(&scan_q
)) {
3786 mutex_unlock(&scan_mutex
);
3790 h
= list_entry(scan_q
.next
,
3793 list_del(&h
->scan_list
);
3794 h
->busy_scanning
= 1;
3795 mutex_unlock(&scan_mutex
);
3797 rebuild_lun_table(h
, 0, 0);
3798 complete_all(&h
->scan_wait
);
3799 mutex_lock(&scan_mutex
);
3800 h
->busy_scanning
= 0;
3801 mutex_unlock(&scan_mutex
);
3808 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
3810 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
3813 switch (c
->err_info
->SenseInfo
[12]) {
3815 dev_warn(&h
->pdev
->dev
, "a state change "
3816 "detected, command retried\n");
3820 dev_warn(&h
->pdev
->dev
, "LUN failure "
3821 "detected, action required\n");
3824 case REPORT_LUNS_CHANGED
:
3825 dev_warn(&h
->pdev
->dev
, "report LUN data changed\n");
3827 * Here, we could call add_to_scan_list and wake up the scan thread,
3828 * except that it's quite likely that we will get more than one
3829 * REPORT_LUNS_CHANGED condition in quick succession, which means
3830 * that those which occur after the first one will likely happen
3831 * *during* the scan_thread's rescan. And the rescan code is not
3832 * robust enough to restart in the middle, undoing what it has already
3833 * done, and it's not clear that it's even possible to do this, since
3834 * part of what it does is notify the block layer, which starts
3835 * doing it's own i/o to read partition tables and so on, and the
3836 * driver doesn't have visibility to know what might need undoing.
3837 * In any event, if possible, it is horribly complicated to get right
3838 * so we just don't do it for now.
3840 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
3844 case POWER_OR_RESET
:
3845 dev_warn(&h
->pdev
->dev
,
3846 "a power on or device reset detected\n");
3849 case UNIT_ATTENTION_CLEARED
:
3850 dev_warn(&h
->pdev
->dev
,
3851 "unit attention cleared by another initiator\n");
3855 dev_warn(&h
->pdev
->dev
, "unknown unit attention detected\n");
3861 * We cannot read the structure directly, for portability we must use
3863 * This is for debug only.
3865 static void print_cfg_table(ctlr_info_t
*h
)
3869 CfgTable_struct
*tb
= h
->cfgtable
;
3871 dev_dbg(&h
->pdev
->dev
, "Controller Configuration information\n");
3872 dev_dbg(&h
->pdev
->dev
, "------------------------------------\n");
3873 for (i
= 0; i
< 4; i
++)
3874 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3875 temp_name
[4] = '\0';
3876 dev_dbg(&h
->pdev
->dev
, " Signature = %s\n", temp_name
);
3877 dev_dbg(&h
->pdev
->dev
, " Spec Number = %d\n",
3878 readl(&(tb
->SpecValence
)));
3879 dev_dbg(&h
->pdev
->dev
, " Transport methods supported = 0x%x\n",
3880 readl(&(tb
->TransportSupport
)));
3881 dev_dbg(&h
->pdev
->dev
, " Transport methods active = 0x%x\n",
3882 readl(&(tb
->TransportActive
)));
3883 dev_dbg(&h
->pdev
->dev
, " Requested transport Method = 0x%x\n",
3884 readl(&(tb
->HostWrite
.TransportRequest
)));
3885 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Delay = 0x%x\n",
3886 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3887 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Count = 0x%x\n",
3888 readl(&(tb
->HostWrite
.CoalIntCount
)));
3889 dev_dbg(&h
->pdev
->dev
, " Max outstanding commands = 0x%x\n",
3890 readl(&(tb
->CmdsOutMax
)));
3891 dev_dbg(&h
->pdev
->dev
, " Bus Types = 0x%x\n",
3892 readl(&(tb
->BusTypes
)));
3893 for (i
= 0; i
< 16; i
++)
3894 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3895 temp_name
[16] = '\0';
3896 dev_dbg(&h
->pdev
->dev
, " Server Name = %s\n", temp_name
);
3897 dev_dbg(&h
->pdev
->dev
, " Heartbeat Counter = 0x%x\n\n\n",
3898 readl(&(tb
->HeartBeat
)));
3901 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3903 int i
, offset
, mem_type
, bar_type
;
3904 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3907 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3908 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3909 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3912 mem_type
= pci_resource_flags(pdev
, i
) &
3913 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3915 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3916 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3917 offset
+= 4; /* 32 bit */
3919 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3922 default: /* reserved in PCI 2.2 */
3923 dev_warn(&pdev
->dev
,
3924 "Base address is invalid\n");
3929 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3935 /* Fill in bucket_map[], given nsgs (the max number of
3936 * scatter gather elements supported) and bucket[],
3937 * which is an array of 8 integers. The bucket[] array
3938 * contains 8 different DMA transfer sizes (in 16
3939 * byte increments) which the controller uses to fetch
3940 * commands. This function fills in bucket_map[], which
3941 * maps a given number of scatter gather elements to one of
3942 * the 8 DMA transfer sizes. The point of it is to allow the
3943 * controller to only do as much DMA as needed to fetch the
3944 * command, with the DMA transfer size encoded in the lower
3945 * bits of the command address.
3947 static void calc_bucket_map(int bucket
[], int num_buckets
,
3948 int nsgs
, int *bucket_map
)
3952 /* even a command with 0 SGs requires 4 blocks */
3953 #define MINIMUM_TRANSFER_BLOCKS 4
3954 #define NUM_BUCKETS 8
3955 /* Note, bucket_map must have nsgs+1 entries. */
3956 for (i
= 0; i
<= nsgs
; i
++) {
3957 /* Compute size of a command with i SG entries */
3958 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
3959 b
= num_buckets
; /* Assume the biggest bucket */
3960 /* Find the bucket that is just big enough */
3961 for (j
= 0; j
< 8; j
++) {
3962 if (bucket
[j
] >= size
) {
3967 /* for a command with i SG entries, use bucket b. */
3972 static void cciss_wait_for_mode_change_ack(ctlr_info_t
*h
)
3976 /* under certain very rare conditions, this can take awhile.
3977 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3978 * as we enter this code.) */
3979 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3980 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
3982 usleep_range(10000, 20000);
3986 static void cciss_enter_performant_mode(ctlr_info_t
*h
, u32 use_short_tags
)
3988 /* This is a bit complicated. There are 8 registers on
3989 * the controller which we write to to tell it 8 different
3990 * sizes of commands which there may be. It's a way of
3991 * reducing the DMA done to fetch each command. Encoded into
3992 * each command's tag are 3 bits which communicate to the controller
3993 * which of the eight sizes that command fits within. The size of
3994 * each command depends on how many scatter gather entries there are.
3995 * Each SG entry requires 16 bytes. The eight registers are programmed
3996 * with the number of 16-byte blocks a command of that size requires.
3997 * The smallest command possible requires 5 such 16 byte blocks.
3998 * the largest command possible requires MAXSGENTRIES + 4 16-byte
3999 * blocks. Note, this only extends to the SG entries contained
4000 * within the command block, and does not extend to chained blocks
4001 * of SG elements. bft[] contains the eight values we write to
4002 * the registers. They are not evenly distributed, but have more
4003 * sizes for small commands, and fewer sizes for larger commands.
4006 int bft
[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES
+ 4};
4008 * 5 = 1 s/g entry or 4k
4009 * 6 = 2 s/g entry or 8k
4010 * 8 = 4 s/g entry or 16k
4011 * 10 = 6 s/g entry or 24k
4013 unsigned long register_value
;
4014 BUILD_BUG_ON(28 > MAXSGENTRIES
+ 4);
4016 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
4018 /* Controller spec: zero out this buffer. */
4019 memset(h
->reply_pool
, 0, h
->max_commands
* sizeof(__u64
));
4020 h
->reply_pool_head
= h
->reply_pool
;
4022 trans_offset
= readl(&(h
->cfgtable
->TransMethodOffset
));
4023 calc_bucket_map(bft
, ARRAY_SIZE(bft
), h
->maxsgentries
,
4024 h
->blockFetchTable
);
4025 writel(bft
[0], &h
->transtable
->BlockFetch0
);
4026 writel(bft
[1], &h
->transtable
->BlockFetch1
);
4027 writel(bft
[2], &h
->transtable
->BlockFetch2
);
4028 writel(bft
[3], &h
->transtable
->BlockFetch3
);
4029 writel(bft
[4], &h
->transtable
->BlockFetch4
);
4030 writel(bft
[5], &h
->transtable
->BlockFetch5
);
4031 writel(bft
[6], &h
->transtable
->BlockFetch6
);
4032 writel(bft
[7], &h
->transtable
->BlockFetch7
);
4034 /* size of controller ring buffer */
4035 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
4036 writel(1, &h
->transtable
->RepQCount
);
4037 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
4038 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
4039 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
4040 writel(0, &h
->transtable
->RepQAddr0High32
);
4041 writel(CFGTBL_Trans_Performant
| use_short_tags
,
4042 &(h
->cfgtable
->HostWrite
.TransportRequest
));
4044 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
4045 cciss_wait_for_mode_change_ack(h
);
4046 register_value
= readl(&(h
->cfgtable
->TransportActive
));
4047 if (!(register_value
& CFGTBL_Trans_Performant
))
4048 dev_warn(&h
->pdev
->dev
, "cciss: unable to get board into"
4049 " performant mode\n");
4052 static void cciss_put_controller_into_performant_mode(ctlr_info_t
*h
)
4054 __u32 trans_support
;
4056 if (cciss_simple_mode
)
4059 dev_dbg(&h
->pdev
->dev
, "Trying to put board into Performant mode\n");
4060 /* Attempt to put controller into performant mode if supported */
4061 /* Does board support performant mode? */
4062 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
4063 if (!(trans_support
& PERFORMANT_MODE
))
4066 dev_dbg(&h
->pdev
->dev
, "Placing controller into performant mode\n");
4067 /* Performant mode demands commands on a 32 byte boundary
4068 * pci_alloc_consistent aligns on page boundarys already.
4069 * Just need to check if divisible by 32
4071 if ((sizeof(CommandList_struct
) % 32) != 0) {
4072 dev_warn(&h
->pdev
->dev
, "%s %d %s\n",
4073 "cciss info: command size[",
4074 (int)sizeof(CommandList_struct
),
4075 "] not divisible by 32, no performant mode..\n");
4079 /* Performant mode ring buffer and supporting data structures */
4080 h
->reply_pool
= (__u64
*)pci_alloc_consistent(
4081 h
->pdev
, h
->max_commands
* sizeof(__u64
),
4082 &(h
->reply_pool_dhandle
));
4084 /* Need a block fetch table for performant mode */
4085 h
->blockFetchTable
= kmalloc(((h
->maxsgentries
+1) *
4086 sizeof(__u32
)), GFP_KERNEL
);
4088 if ((h
->reply_pool
== NULL
) || (h
->blockFetchTable
== NULL
))
4091 cciss_enter_performant_mode(h
,
4092 trans_support
& CFGTBL_Trans_use_short_tags
);
4094 /* Change the access methods to the performant access methods */
4095 h
->access
= SA5_performant_access
;
4096 h
->transMethod
= CFGTBL_Trans_Performant
;
4100 kfree(h
->blockFetchTable
);
4102 pci_free_consistent(h
->pdev
,
4103 h
->max_commands
* sizeof(__u64
),
4105 h
->reply_pool_dhandle
);
4108 } /* cciss_put_controller_into_performant_mode */
4110 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
4111 * controllers that are capable. If not, we use IO-APIC mode.
4114 static void cciss_interrupt_mode(ctlr_info_t
*h
)
4118 /* Some boards advertise MSI but don't really support it */
4119 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
4120 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
4121 goto default_int_mode
;
4123 ret
= pci_alloc_irq_vectors(h
->pdev
, 4, 4, PCI_IRQ_MSIX
);
4125 h
->intr
[0] = pci_irq_vector(h
->pdev
, 0);
4126 h
->intr
[1] = pci_irq_vector(h
->pdev
, 1);
4127 h
->intr
[2] = pci_irq_vector(h
->pdev
, 2);
4128 h
->intr
[3] = pci_irq_vector(h
->pdev
, 3);
4132 ret
= pci_alloc_irq_vectors(h
->pdev
, 1, 1, PCI_IRQ_MSI
);
4135 /* if we get here we're going to use the default interrupt mode */
4136 h
->intr
[h
->intr_mode
] = pci_irq_vector(h
->pdev
, 0);
4140 static int cciss_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
4143 u32 subsystem_vendor_id
, subsystem_device_id
;
4145 subsystem_vendor_id
= pdev
->subsystem_vendor
;
4146 subsystem_device_id
= pdev
->subsystem_device
;
4147 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
4148 subsystem_vendor_id
;
4150 for (i
= 0; i
< ARRAY_SIZE(products
); i
++) {
4151 /* Stand aside for hpsa driver on request */
4152 if (cciss_allow_hpsa
)
4154 if (*board_id
== products
[i
].board_id
)
4157 dev_warn(&pdev
->dev
, "unrecognized board ID: 0x%08x, ignoring.\n",
4162 static inline bool cciss_board_disabled(ctlr_info_t
*h
)
4166 (void) pci_read_config_word(h
->pdev
, PCI_COMMAND
, &command
);
4167 return ((command
& PCI_COMMAND_MEMORY
) == 0);
4170 static int cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
4171 unsigned long *memory_bar
)
4175 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
4176 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
4177 /* addressing mode bits already removed */
4178 *memory_bar
= pci_resource_start(pdev
, i
);
4179 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
4183 dev_warn(&pdev
->dev
, "no memory BAR found\n");
4187 static int cciss_wait_for_board_state(struct pci_dev
*pdev
,
4188 void __iomem
*vaddr
, int wait_for_ready
)
4189 #define BOARD_READY 1
4190 #define BOARD_NOT_READY 0
4196 iterations
= CCISS_BOARD_READY_ITERATIONS
;
4198 iterations
= CCISS_BOARD_NOT_READY_ITERATIONS
;
4200 for (i
= 0; i
< iterations
; i
++) {
4201 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
4202 if (wait_for_ready
) {
4203 if (scratchpad
== CCISS_FIRMWARE_READY
)
4206 if (scratchpad
!= CCISS_FIRMWARE_READY
)
4209 msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS
);
4211 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
4215 static int cciss_find_cfg_addrs(struct pci_dev
*pdev
, void __iomem
*vaddr
,
4216 u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
4219 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
4220 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
4221 *cfg_base_addr
&= (u32
) 0x0000ffff;
4222 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
4223 if (*cfg_base_addr_index
== -1) {
4224 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index, "
4225 "*cfg_base_addr = 0x%08x\n", *cfg_base_addr
);
4231 static int cciss_find_cfgtables(ctlr_info_t
*h
)
4235 u64 cfg_base_addr_index
;
4239 rc
= cciss_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
4240 &cfg_base_addr_index
, &cfg_offset
);
4243 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4244 cfg_base_addr_index
) + cfg_offset
, sizeof(*h
->cfgtable
));
4247 rc
= write_driver_ver_to_cfgtable(h
->cfgtable
);
4250 /* Find performant mode table. */
4251 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
4252 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4253 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
4254 sizeof(*h
->transtable
));
4260 static void cciss_get_max_perf_mode_cmds(struct ctlr_info
*h
)
4262 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
4264 /* Limit commands in memory limited kdump scenario. */
4265 if (reset_devices
&& h
->max_commands
> 32)
4266 h
->max_commands
= 32;
4268 if (h
->max_commands
< 16) {
4269 dev_warn(&h
->pdev
->dev
, "Controller reports "
4270 "max supported commands of %d, an obvious lie. "
4271 "Using 16. Ensure that firmware is up to date.\n",
4273 h
->max_commands
= 16;
4277 /* Interrogate the hardware for some limits:
4278 * max commands, max SG elements without chaining, and with chaining,
4279 * SG chain block size, etc.
4281 static void cciss_find_board_params(ctlr_info_t
*h
)
4283 cciss_get_max_perf_mode_cmds(h
);
4284 h
->nr_cmds
= h
->max_commands
- 4 - cciss_tape_cmds
;
4285 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxSGElements
));
4287 * The P600 may exhibit poor performnace under some workloads
4288 * if we use the value in the configuration table. Limit this
4289 * controller to MAXSGENTRIES (32) instead.
4291 if (h
->board_id
== 0x3225103C)
4292 h
->maxsgentries
= MAXSGENTRIES
;
4294 * Limit in-command s/g elements to 32 save dma'able memory.
4295 * Howvever spec says if 0, use 31
4297 h
->max_cmd_sgentries
= 31;
4298 if (h
->maxsgentries
> 512) {
4299 h
->max_cmd_sgentries
= 32;
4300 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sgentries
+ 1;
4301 h
->maxsgentries
--; /* save one for chain pointer */
4303 h
->maxsgentries
= 31; /* default to traditional values */
4308 static inline bool CISS_signature_present(ctlr_info_t
*h
)
4310 if (!check_signature(h
->cfgtable
->Signature
, "CISS", 4)) {
4311 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
4317 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
4318 static inline void cciss_enable_scsi_prefetch(ctlr_info_t
*h
)
4323 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
4325 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
4329 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
4330 * in a prefetch beyond physical memory.
4332 static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t
*h
)
4337 if (h
->board_id
!= 0x3225103C)
4339 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
4340 dma_prefetch
|= 0x8000;
4341 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
4342 pci_read_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, &dma_refetch
);
4344 pci_write_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, dma_refetch
);
4347 static int cciss_pci_init(ctlr_info_t
*h
)
4349 int prod_index
, err
;
4351 prod_index
= cciss_lookup_board_id(h
->pdev
, &h
->board_id
);
4354 h
->product_name
= products
[prod_index
].product_name
;
4355 h
->access
= *(products
[prod_index
].access
);
4357 if (cciss_board_disabled(h
)) {
4358 dev_warn(&h
->pdev
->dev
, "controller appears to be disabled\n");
4362 pci_disable_link_state(h
->pdev
, PCIE_LINK_STATE_L0S
|
4363 PCIE_LINK_STATE_L1
| PCIE_LINK_STATE_CLKPM
);
4365 err
= pci_enable_device(h
->pdev
);
4367 dev_warn(&h
->pdev
->dev
, "Unable to Enable PCI device\n");
4371 err
= pci_request_regions(h
->pdev
, "cciss");
4373 dev_warn(&h
->pdev
->dev
,
4374 "Cannot obtain PCI resources, aborting\n");
4378 dev_dbg(&h
->pdev
->dev
, "irq = %x\n", h
->pdev
->irq
);
4379 dev_dbg(&h
->pdev
->dev
, "board_id = %x\n", h
->board_id
);
4381 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
4382 * else we use the IO-APIC interrupt assigned to us by system ROM.
4384 cciss_interrupt_mode(h
);
4385 err
= cciss_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
4387 goto err_out_free_res
;
4388 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
4391 goto err_out_free_res
;
4393 err
= cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
4395 goto err_out_free_res
;
4396 err
= cciss_find_cfgtables(h
);
4398 goto err_out_free_res
;
4400 cciss_find_board_params(h
);
4402 if (!CISS_signature_present(h
)) {
4404 goto err_out_free_res
;
4406 cciss_enable_scsi_prefetch(h
);
4407 cciss_p600_dma_prefetch_quirk(h
);
4408 err
= cciss_enter_simple_mode(h
);
4410 goto err_out_free_res
;
4411 cciss_put_controller_into_performant_mode(h
);
4416 * Deliberately omit pci_disable_device(): it does something nasty to
4417 * Smart Array controllers that pci_enable_device does not undo
4420 iounmap(h
->transtable
);
4422 iounmap(h
->cfgtable
);
4425 pci_release_regions(h
->pdev
);
4429 /* Function to find the first free pointer into our hba[] array
4430 * Returns -1 if no free entries are left.
4432 static int alloc_cciss_hba(struct pci_dev
*pdev
)
4436 for (i
= 0; i
< MAX_CTLR
; i
++) {
4440 h
= kzalloc(sizeof(ctlr_info_t
), GFP_KERNEL
);
4447 dev_warn(&pdev
->dev
, "This driver supports a maximum"
4448 " of %d controllers.\n", MAX_CTLR
);
4451 dev_warn(&pdev
->dev
, "out of memory.\n");
4455 static void free_hba(ctlr_info_t
*h
)
4459 hba
[h
->ctlr
] = NULL
;
4460 for (i
= 0; i
< h
->highest_lun
+ 1; i
++)
4461 if (h
->gendisk
[i
] != NULL
)
4462 put_disk(h
->gendisk
[i
]);
4466 /* Send a message CDB to the firmware. */
4467 static int cciss_message(struct pci_dev
*pdev
, unsigned char opcode
,
4471 CommandListHeader_struct CommandHeader
;
4472 RequestBlock_struct Request
;
4473 ErrDescriptor_struct ErrorDescriptor
;
4475 static const size_t cmd_sz
= sizeof(Command
) + sizeof(ErrorInfo_struct
);
4478 uint32_t paddr32
, tag
;
4479 void __iomem
*vaddr
;
4482 vaddr
= ioremap_nocache(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
4486 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
4487 CCISS commands, so they must be allocated from the lower 4GiB of
4489 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4495 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
4501 /* This must fit, because of the 32-bit consistent DMA mask. Also,
4502 although there's no guarantee, we assume that the address is at
4503 least 4-byte aligned (most likely, it's page-aligned). */
4506 cmd
->CommandHeader
.ReplyQueue
= 0;
4507 cmd
->CommandHeader
.SGList
= 0;
4508 cmd
->CommandHeader
.SGTotal
= 0;
4509 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
4510 cmd
->CommandHeader
.Tag
.upper
= 0;
4511 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
4513 cmd
->Request
.CDBLen
= 16;
4514 cmd
->Request
.Type
.Type
= TYPE_MSG
;
4515 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
4516 cmd
->Request
.Type
.Direction
= XFER_NONE
;
4517 cmd
->Request
.Timeout
= 0; /* Don't time out */
4518 cmd
->Request
.CDB
[0] = opcode
;
4519 cmd
->Request
.CDB
[1] = type
;
4520 memset(&cmd
->Request
.CDB
[2], 0, 14); /* the rest of the CDB is reserved */
4522 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(Command
);
4523 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
4524 cmd
->ErrorDescriptor
.Len
= sizeof(ErrorInfo_struct
);
4526 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
4528 for (i
= 0; i
< 10; i
++) {
4529 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
4530 if ((tag
& ~3) == paddr32
)
4532 msleep(CCISS_POST_RESET_NOOP_TIMEOUT_MSECS
);
4537 /* we leak the DMA buffer here ... no choice since the controller could
4538 still complete the command. */
4541 "controller message %02x:%02x timed out\n",
4546 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
4549 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
4554 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
4559 #define cciss_noop(p) cciss_message(p, 3, 0)
4561 static int cciss_controller_hard_reset(struct pci_dev
*pdev
,
4562 void * __iomem vaddr
, u32 use_doorbell
)
4568 /* For everything after the P600, the PCI power state method
4569 * of resetting the controller doesn't work, so we have this
4570 * other way using the doorbell register.
4572 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
4573 writel(use_doorbell
, vaddr
+ SA5_DOORBELL
);
4574 } else { /* Try to do it the PCI power state way */
4576 /* Quoting from the Open CISS Specification: "The Power
4577 * Management Control/Status Register (CSR) controls the power
4578 * state of the device. The normal operating state is D0,
4579 * CSR=00h. The software off state is D3, CSR=03h. To reset
4580 * the controller, place the interface device in D3 then to D0,
4581 * this causes a secondary PCI reset which will reset the
4584 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
4587 "cciss_controller_hard_reset: "
4588 "PCI PM not supported\n");
4591 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
4592 /* enter the D3hot power management state */
4593 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
4594 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4596 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4600 /* enter the D0 power management state */
4601 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4603 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4606 * The P600 requires a small delay when changing states.
4607 * Otherwise we may think the board did not reset and we bail.
4608 * This for kdump only and is particular to the P600.
4615 static void init_driver_version(char *driver_version
, int len
)
4617 memset(driver_version
, 0, len
);
4618 strncpy(driver_version
, "cciss " DRIVER_NAME
, len
- 1);
4621 static int write_driver_ver_to_cfgtable(CfgTable_struct __iomem
*cfgtable
)
4623 char *driver_version
;
4624 int i
, size
= sizeof(cfgtable
->driver_version
);
4626 driver_version
= kmalloc(size
, GFP_KERNEL
);
4627 if (!driver_version
)
4630 init_driver_version(driver_version
, size
);
4631 for (i
= 0; i
< size
; i
++)
4632 writeb(driver_version
[i
], &cfgtable
->driver_version
[i
]);
4633 kfree(driver_version
);
4637 static void read_driver_ver_from_cfgtable(CfgTable_struct __iomem
*cfgtable
,
4638 unsigned char *driver_ver
)
4642 for (i
= 0; i
< sizeof(cfgtable
->driver_version
); i
++)
4643 driver_ver
[i
] = readb(&cfgtable
->driver_version
[i
]);
4646 static int controller_reset_failed(CfgTable_struct __iomem
*cfgtable
)
4649 char *driver_ver
, *old_driver_ver
;
4650 int rc
, size
= sizeof(cfgtable
->driver_version
);
4652 old_driver_ver
= kmalloc(2 * size
, GFP_KERNEL
);
4653 if (!old_driver_ver
)
4655 driver_ver
= old_driver_ver
+ size
;
4657 /* After a reset, the 32 bytes of "driver version" in the cfgtable
4658 * should have been changed, otherwise we know the reset failed.
4660 init_driver_version(old_driver_ver
, size
);
4661 read_driver_ver_from_cfgtable(cfgtable
, driver_ver
);
4662 rc
= !memcmp(driver_ver
, old_driver_ver
, size
);
4663 kfree(old_driver_ver
);
4667 /* This does a hard reset of the controller using PCI power management
4668 * states or using the doorbell register. */
4669 static int cciss_kdump_hard_reset_controller(struct pci_dev
*pdev
)
4673 u64 cfg_base_addr_index
;
4674 void __iomem
*vaddr
;
4675 unsigned long paddr
;
4676 u32 misc_fw_support
;
4678 CfgTable_struct __iomem
*cfgtable
;
4681 u16 command_register
;
4683 /* For controllers as old a the p600, this is very nearly
4686 * pci_save_state(pci_dev);
4687 * pci_set_power_state(pci_dev, PCI_D3hot);
4688 * pci_set_power_state(pci_dev, PCI_D0);
4689 * pci_restore_state(pci_dev);
4691 * For controllers newer than the P600, the pci power state
4692 * method of resetting doesn't work so we have another way
4693 * using the doorbell register.
4696 /* Exclude 640x boards. These are two pci devices in one slot
4697 * which share a battery backed cache module. One controls the
4698 * cache, the other accesses the cache through the one that controls
4699 * it. If we reset the one controlling the cache, the other will
4700 * likely not be happy. Just forbid resetting this conjoined mess.
4702 cciss_lookup_board_id(pdev
, &board_id
);
4703 if (!ctlr_is_resettable(board_id
)) {
4704 dev_warn(&pdev
->dev
, "Controller not resettable\n");
4708 /* if controller is soft- but not hard resettable... */
4709 if (!ctlr_is_hard_resettable(board_id
))
4710 return -ENOTSUPP
; /* try soft reset later. */
4712 /* Save the PCI command register */
4713 pci_read_config_word(pdev
, 4, &command_register
);
4714 /* Turn the board off. This is so that later pci_restore_state()
4715 * won't turn the board on before the rest of config space is ready.
4717 pci_disable_device(pdev
);
4718 pci_save_state(pdev
);
4720 /* find the first memory BAR, so we can find the cfg table */
4721 rc
= cciss_pci_find_memory_BAR(pdev
, &paddr
);
4724 vaddr
= remap_pci_mem(paddr
, 0x250);
4728 /* find cfgtable in order to check if reset via doorbell is supported */
4729 rc
= cciss_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
4730 &cfg_base_addr_index
, &cfg_offset
);
4733 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
4734 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
4739 rc
= write_driver_ver_to_cfgtable(cfgtable
);
4743 /* If reset via doorbell register is supported, use that.
4744 * There are two such methods. Favor the newest method.
4746 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
4747 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET2
;
4749 use_doorbell
= DOORBELL_CTLR_RESET2
;
4751 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
4753 dev_warn(&pdev
->dev
, "Controller claims that "
4754 "'Bit 2 doorbell reset' is "
4755 "supported, but not 'bit 5 doorbell reset'. "
4756 "Firmware update is recommended.\n");
4757 rc
= -ENOTSUPP
; /* use the soft reset */
4758 goto unmap_cfgtable
;
4762 rc
= cciss_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
4764 goto unmap_cfgtable
;
4765 pci_restore_state(pdev
);
4766 rc
= pci_enable_device(pdev
);
4768 dev_warn(&pdev
->dev
, "failed to enable device.\n");
4769 goto unmap_cfgtable
;
4771 pci_write_config_word(pdev
, 4, command_register
);
4773 /* Some devices (notably the HP Smart Array 5i Controller)
4774 need a little pause here */
4775 msleep(CCISS_POST_RESET_PAUSE_MSECS
);
4777 /* Wait for board to become not ready, then ready. */
4778 dev_info(&pdev
->dev
, "Waiting for board to reset.\n");
4779 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
4781 dev_warn(&pdev
->dev
, "Failed waiting for board to hard reset."
4782 " Will try soft reset.\n");
4783 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4784 goto unmap_cfgtable
;
4786 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
4788 dev_warn(&pdev
->dev
,
4789 "failed waiting for board to become ready "
4790 "after hard reset\n");
4791 goto unmap_cfgtable
;
4794 rc
= controller_reset_failed(vaddr
);
4796 goto unmap_cfgtable
;
4798 dev_warn(&pdev
->dev
, "Unable to successfully hard reset "
4799 "controller. Will try soft reset.\n");
4800 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4802 dev_info(&pdev
->dev
, "Board ready after hard reset.\n");
4813 static int cciss_init_reset_devices(struct pci_dev
*pdev
)
4820 /* Reset the controller with a PCI power-cycle or via doorbell */
4821 rc
= cciss_kdump_hard_reset_controller(pdev
);
4823 /* -ENOTSUPP here means we cannot reset the controller
4824 * but it's already (and still) up and running in
4825 * "performant mode". Or, it might be 640x, which can't reset
4826 * due to concerns about shared bbwc between 6402/6404 pair.
4828 if (rc
== -ENOTSUPP
)
4829 return rc
; /* just try to do the kdump anyhow. */
4833 /* Now try to get the controller to respond to a no-op */
4834 dev_warn(&pdev
->dev
, "Waiting for controller to respond to no-op\n");
4835 for (i
= 0; i
< CCISS_POST_RESET_NOOP_RETRIES
; i
++) {
4836 if (cciss_noop(pdev
) == 0)
4839 dev_warn(&pdev
->dev
, "no-op failed%s\n",
4840 (i
< CCISS_POST_RESET_NOOP_RETRIES
- 1 ?
4841 "; re-trying" : ""));
4842 msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS
);
4847 static int cciss_allocate_cmd_pool(ctlr_info_t
*h
)
4849 h
->cmd_pool_bits
= kmalloc(BITS_TO_LONGS(h
->nr_cmds
) *
4850 sizeof(unsigned long), GFP_KERNEL
);
4851 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
4852 h
->nr_cmds
* sizeof(CommandList_struct
),
4853 &(h
->cmd_pool_dhandle
));
4854 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
4855 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4856 &(h
->errinfo_pool_dhandle
));
4857 if ((h
->cmd_pool_bits
== NULL
)
4858 || (h
->cmd_pool
== NULL
)
4859 || (h
->errinfo_pool
== NULL
)) {
4860 dev_err(&h
->pdev
->dev
, "out of memory");
4866 static int cciss_allocate_scatterlists(ctlr_info_t
*h
)
4870 /* zero it, so that on free we need not know how many were alloc'ed */
4871 h
->scatter_list
= kzalloc(h
->max_commands
*
4872 sizeof(struct scatterlist
*), GFP_KERNEL
);
4873 if (!h
->scatter_list
)
4876 for (i
= 0; i
< h
->nr_cmds
; i
++) {
4877 h
->scatter_list
[i
] = kmalloc(sizeof(struct scatterlist
) *
4878 h
->maxsgentries
, GFP_KERNEL
);
4879 if (h
->scatter_list
[i
] == NULL
) {
4880 dev_err(&h
->pdev
->dev
, "could not allocate "
4888 static void cciss_free_scatterlists(ctlr_info_t
*h
)
4892 if (h
->scatter_list
) {
4893 for (i
= 0; i
< h
->nr_cmds
; i
++)
4894 kfree(h
->scatter_list
[i
]);
4895 kfree(h
->scatter_list
);
4899 static void cciss_free_cmd_pool(ctlr_info_t
*h
)
4901 kfree(h
->cmd_pool_bits
);
4903 pci_free_consistent(h
->pdev
,
4904 h
->nr_cmds
* sizeof(CommandList_struct
),
4905 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4906 if (h
->errinfo_pool
)
4907 pci_free_consistent(h
->pdev
,
4908 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4909 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4912 static int cciss_request_irq(ctlr_info_t
*h
,
4913 irqreturn_t (*msixhandler
)(int, void *),
4914 irqreturn_t (*intxhandler
)(int, void *))
4916 if (h
->pdev
->msi_enabled
|| h
->pdev
->msix_enabled
) {
4917 if (!request_irq(h
->intr
[h
->intr_mode
], msixhandler
,
4920 dev_err(&h
->pdev
->dev
, "Unable to get msi irq %d"
4921 " for %s\n", h
->intr
[h
->intr_mode
],
4926 if (!request_irq(h
->intr
[h
->intr_mode
], intxhandler
,
4927 IRQF_SHARED
, h
->devname
, h
))
4929 dev_err(&h
->pdev
->dev
, "Unable to get irq %d for %s\n",
4930 h
->intr
[h
->intr_mode
], h
->devname
);
4934 static int cciss_kdump_soft_reset(ctlr_info_t
*h
)
4936 if (cciss_send_reset(h
, CTLR_LUNID
, CCISS_RESET_TYPE_CONTROLLER
)) {
4937 dev_warn(&h
->pdev
->dev
, "Resetting array controller failed.\n");
4941 dev_info(&h
->pdev
->dev
, "Waiting for board to soft reset.\n");
4942 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_NOT_READY
)) {
4943 dev_warn(&h
->pdev
->dev
, "Soft reset had no effect.\n");
4947 dev_info(&h
->pdev
->dev
, "Board reset, awaiting READY status.\n");
4948 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
)) {
4949 dev_warn(&h
->pdev
->dev
, "Board failed to become ready "
4950 "after soft reset.\n");
4957 static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t
*h
)
4961 free_irq(h
->intr
[h
->intr_mode
], h
);
4962 pci_free_irq_vectors(h
->pdev
);
4963 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
4964 cciss_free_scatterlists(h
);
4965 cciss_free_cmd_pool(h
);
4966 kfree(h
->blockFetchTable
);
4968 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
4969 h
->reply_pool
, h
->reply_pool_dhandle
);
4971 iounmap(h
->transtable
);
4973 iounmap(h
->cfgtable
);
4976 unregister_blkdev(h
->major
, h
->devname
);
4977 cciss_destroy_hba_sysfs_entry(h
);
4978 pci_release_regions(h
->pdev
);
4984 * This is it. Find all the controllers and register them. I really hate
4985 * stealing all these major device numbers.
4986 * returns the number of block devices registered.
4988 static int cciss_init_one(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
4993 int try_soft_reset
= 0;
4994 int dac
, return_code
;
4995 InquiryData_struct
*inq_buff
;
4997 unsigned long flags
;
5000 * By default the cciss driver is used for all older HP Smart Array
5001 * controllers. There are module paramaters that allow a user to
5002 * override this behavior and instead use the hpsa SCSI driver. If
5003 * this is the case cciss may be loaded first from the kdump initrd
5004 * image and cause a kernel panic. So if reset_devices is true and
5005 * cciss_allow_hpsa is set just bail.
5007 if ((reset_devices
) && (cciss_allow_hpsa
== 1))
5009 rc
= cciss_init_reset_devices(pdev
);
5011 if (rc
!= -ENOTSUPP
)
5013 /* If the reset fails in a particular way (it has no way to do
5014 * a proper hard reset, so returns -ENOTSUPP) we can try to do
5015 * a soft reset once we get the controller configured up to the
5016 * point that it can accept a command.
5022 reinit_after_soft_reset
:
5024 i
= alloc_cciss_hba(pdev
);
5030 h
->busy_initializing
= 1;
5031 h
->intr_mode
= cciss_simple_mode
? SIMPLE_MODE_INT
: PERF_MODE_INT
;
5032 INIT_LIST_HEAD(&h
->cmpQ
);
5033 INIT_LIST_HEAD(&h
->reqQ
);
5034 mutex_init(&h
->busy_shutting_down
);
5036 if (cciss_pci_init(h
) != 0)
5037 goto clean_no_release_regions
;
5039 sprintf(h
->devname
, "cciss%d", i
);
5042 if (cciss_tape_cmds
< 2)
5043 cciss_tape_cmds
= 2;
5044 if (cciss_tape_cmds
> 16)
5045 cciss_tape_cmds
= 16;
5047 init_completion(&h
->scan_wait
);
5049 if (cciss_create_hba_sysfs_entry(h
))
5052 /* configure PCI DMA stuff */
5053 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)))
5055 else if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)))
5058 dev_err(&h
->pdev
->dev
, "no suitable DMA available\n");
5063 * register with the major number, or get a dynamic major number
5064 * by passing 0 as argument. This is done for greater than
5065 * 8 controller support.
5067 if (i
< MAX_CTLR_ORIG
)
5068 h
->major
= COMPAQ_CISS_MAJOR
+ i
;
5069 rc
= register_blkdev(h
->major
, h
->devname
);
5070 if (rc
== -EBUSY
|| rc
== -EINVAL
) {
5071 dev_err(&h
->pdev
->dev
,
5072 "Unable to get major number %d for %s "
5073 "on hba %d\n", h
->major
, h
->devname
, i
);
5076 if (i
>= MAX_CTLR_ORIG
)
5080 /* make sure the board interrupts are off */
5081 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5082 rc
= cciss_request_irq(h
, do_cciss_msix_intr
, do_cciss_intx
);
5086 dev_info(&h
->pdev
->dev
, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
5087 h
->devname
, pdev
->device
, pci_name(pdev
),
5088 h
->intr
[h
->intr_mode
], dac
? "" : " not");
5090 if (cciss_allocate_cmd_pool(h
))
5093 if (cciss_allocate_scatterlists(h
))
5096 h
->cmd_sg_list
= cciss_allocate_sg_chain_blocks(h
,
5097 h
->chainsize
, h
->nr_cmds
);
5098 if (!h
->cmd_sg_list
&& h
->chainsize
> 0)
5101 spin_lock_init(&h
->lock
);
5103 /* Initialize the pdev driver private data.
5104 have it point to h. */
5105 pci_set_drvdata(pdev
, h
);
5106 /* command and error info recs zeroed out before
5108 bitmap_zero(h
->cmd_pool_bits
, h
->nr_cmds
);
5111 h
->highest_lun
= -1;
5112 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
5114 h
->gendisk
[j
] = NULL
;
5117 /* At this point, the controller is ready to take commands.
5118 * Now, if reset_devices and the hard reset didn't work, try
5119 * the soft reset and see if that works.
5121 if (try_soft_reset
) {
5123 /* This is kind of gross. We may or may not get a completion
5124 * from the soft reset command, and if we do, then the value
5125 * from the fifo may or may not be valid. So, we wait 10 secs
5126 * after the reset throwing away any completions we get during
5127 * that time. Unregister the interrupt handler and register
5128 * fake ones to scoop up any residual completions.
5130 spin_lock_irqsave(&h
->lock
, flags
);
5131 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5132 spin_unlock_irqrestore(&h
->lock
, flags
);
5133 free_irq(h
->intr
[h
->intr_mode
], h
);
5134 rc
= cciss_request_irq(h
, cciss_msix_discard_completions
,
5135 cciss_intx_discard_completions
);
5137 dev_warn(&h
->pdev
->dev
, "Failed to request_irq after "
5142 rc
= cciss_kdump_soft_reset(h
);
5144 dev_warn(&h
->pdev
->dev
, "Soft reset failed.\n");
5148 dev_info(&h
->pdev
->dev
, "Board READY.\n");
5149 dev_info(&h
->pdev
->dev
,
5150 "Waiting for stale completions to drain.\n");
5151 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5153 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5155 rc
= controller_reset_failed(h
->cfgtable
);
5157 dev_info(&h
->pdev
->dev
,
5158 "Soft reset appears to have failed.\n");
5160 /* since the controller's reset, we have to go back and re-init
5161 * everything. Easiest to just forget what we've done and do it
5164 cciss_undo_allocations_after_kdump_soft_reset(h
);
5167 /* don't go to clean4, we already unallocated */
5170 goto reinit_after_soft_reset
;
5173 cciss_scsi_setup(h
);
5175 /* Turn the interrupts on so we can service requests */
5176 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5178 /* Get the firmware version */
5179 inq_buff
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
5180 if (inq_buff
== NULL
) {
5181 dev_err(&h
->pdev
->dev
, "out of memory\n");
5185 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
5186 sizeof(InquiryData_struct
), 0, CTLR_LUNID
, TYPE_CMD
);
5187 if (return_code
== IO_OK
) {
5188 h
->firm_ver
[0] = inq_buff
->data_byte
[32];
5189 h
->firm_ver
[1] = inq_buff
->data_byte
[33];
5190 h
->firm_ver
[2] = inq_buff
->data_byte
[34];
5191 h
->firm_ver
[3] = inq_buff
->data_byte
[35];
5192 } else { /* send command failed */
5193 dev_warn(&h
->pdev
->dev
, "unable to determine firmware"
5194 " version of controller\n");
5200 h
->cciss_max_sectors
= 8192;
5202 rebuild_lun_table(h
, 1, 0);
5203 cciss_engage_scsi(h
);
5204 h
->busy_initializing
= 0;
5208 cciss_free_cmd_pool(h
);
5209 cciss_free_scatterlists(h
);
5210 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5211 free_irq(h
->intr
[h
->intr_mode
], h
);
5213 unregister_blkdev(h
->major
, h
->devname
);
5215 cciss_destroy_hba_sysfs_entry(h
);
5217 pci_release_regions(pdev
);
5218 clean_no_release_regions
:
5219 h
->busy_initializing
= 0;
5222 * Deliberately omit pci_disable_device(): it does something nasty to
5223 * Smart Array controllers that pci_enable_device does not undo
5225 pci_set_drvdata(pdev
, NULL
);
5230 static void cciss_shutdown(struct pci_dev
*pdev
)
5236 h
= pci_get_drvdata(pdev
);
5237 flush_buf
= kzalloc(4, GFP_KERNEL
);
5239 dev_warn(&h
->pdev
->dev
, "cache not flushed, out of memory.\n");
5242 /* write all data in the battery backed cache to disk */
5243 return_code
= sendcmd_withirq(h
, CCISS_CACHE_FLUSH
, flush_buf
,
5244 4, 0, CTLR_LUNID
, TYPE_CMD
);
5246 if (return_code
!= IO_OK
)
5247 dev_warn(&h
->pdev
->dev
, "Error flushing cache\n");
5248 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5249 free_irq(h
->intr
[h
->intr_mode
], h
);
5252 static int cciss_enter_simple_mode(struct ctlr_info
*h
)
5256 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
5257 if (!(trans_support
& SIMPLE_MODE
))
5260 h
->max_commands
= readl(&(h
->cfgtable
->CmdsOutMax
));
5261 writel(CFGTBL_Trans_Simple
, &(h
->cfgtable
->HostWrite
.TransportRequest
));
5262 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
5263 cciss_wait_for_mode_change_ack(h
);
5265 if (!(readl(&(h
->cfgtable
->TransportActive
)) & CFGTBL_Trans_Simple
)) {
5266 dev_warn(&h
->pdev
->dev
, "unable to get board into simple mode\n");
5269 h
->transMethod
= CFGTBL_Trans_Simple
;
5274 static void cciss_remove_one(struct pci_dev
*pdev
)
5279 if (pci_get_drvdata(pdev
) == NULL
) {
5280 dev_err(&pdev
->dev
, "Unable to remove device\n");
5284 h
= pci_get_drvdata(pdev
);
5286 if (hba
[i
] == NULL
) {
5287 dev_err(&pdev
->dev
, "device appears to already be removed\n");
5291 mutex_lock(&h
->busy_shutting_down
);
5293 remove_from_scan_list(h
);
5294 remove_proc_entry(h
->devname
, proc_cciss
);
5295 unregister_blkdev(h
->major
, h
->devname
);
5297 /* remove it from the disk list */
5298 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
5299 struct gendisk
*disk
= h
->gendisk
[j
];
5301 struct request_queue
*q
= disk
->queue
;
5303 if (disk
->flags
& GENHD_FL_UP
) {
5304 cciss_destroy_ld_sysfs_entry(h
, j
, 1);
5308 blk_cleanup_queue(q
);
5312 #ifdef CONFIG_CISS_SCSI_TAPE
5313 cciss_unregister_scsi(h
); /* unhook from SCSI subsystem */
5316 cciss_shutdown(pdev
);
5318 pci_free_irq_vectors(h
->pdev
);
5320 iounmap(h
->transtable
);
5321 iounmap(h
->cfgtable
);
5324 cciss_free_cmd_pool(h
);
5325 /* Free up sg elements */
5326 for (j
= 0; j
< h
->nr_cmds
; j
++)
5327 kfree(h
->scatter_list
[j
]);
5328 kfree(h
->scatter_list
);
5329 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5330 kfree(h
->blockFetchTable
);
5332 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
5333 h
->reply_pool
, h
->reply_pool_dhandle
);
5335 * Deliberately omit pci_disable_device(): it does something nasty to
5336 * Smart Array controllers that pci_enable_device does not undo
5338 pci_release_regions(pdev
);
5339 pci_set_drvdata(pdev
, NULL
);
5340 cciss_destroy_hba_sysfs_entry(h
);
5341 mutex_unlock(&h
->busy_shutting_down
);
5345 static struct pci_driver cciss_pci_driver
= {
5347 .probe
= cciss_init_one
,
5348 .remove
= cciss_remove_one
,
5349 .id_table
= cciss_pci_device_id
, /* id_table */
5350 .shutdown
= cciss_shutdown
,
5354 * This is it. Register the PCI driver information for the cards we control
5355 * the OS will call our registered routines when it finds one of our cards.
5357 static int __init
cciss_init(void)
5362 * The hardware requires that commands are aligned on a 64-bit
5363 * boundary. Given that we use pci_alloc_consistent() to allocate an
5364 * array of them, the size must be a multiple of 8 bytes.
5366 BUILD_BUG_ON(sizeof(CommandList_struct
) % COMMANDLIST_ALIGNMENT
);
5367 printk(KERN_INFO DRIVER_NAME
"\n");
5369 err
= bus_register(&cciss_bus_type
);
5373 /* Start the scan thread */
5374 cciss_scan_thread
= kthread_run(scan_thread
, NULL
, "cciss_scan");
5375 if (IS_ERR(cciss_scan_thread
)) {
5376 err
= PTR_ERR(cciss_scan_thread
);
5377 goto err_bus_unregister
;
5380 /* Register for our PCI devices */
5381 err
= pci_register_driver(&cciss_pci_driver
);
5383 goto err_thread_stop
;
5388 kthread_stop(cciss_scan_thread
);
5390 bus_unregister(&cciss_bus_type
);
5395 static void __exit
cciss_cleanup(void)
5399 pci_unregister_driver(&cciss_pci_driver
);
5400 /* double check that all controller entrys have been removed */
5401 for (i
= 0; i
< MAX_CTLR
; i
++) {
5402 if (hba
[i
] != NULL
) {
5403 dev_warn(&hba
[i
]->pdev
->dev
,
5404 "had to remove controller\n");
5405 cciss_remove_one(hba
[i
]->pdev
);
5408 kthread_stop(cciss_scan_thread
);
5410 remove_proc_entry("driver/cciss", NULL
);
5411 bus_unregister(&cciss_bus_type
);
5414 module_init(cciss_init
);
5415 module_exit(cciss_cleanup
);