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
;
1868 blk_end_request_all(rq
, (rq
->errors
== 0) ? 0 : -EIO
);
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
);
1948 * cciss_add_disk sets up the block device queue for a logical drive
1950 static int cciss_add_disk(ctlr_info_t
*h
, struct gendisk
*disk
,
1953 disk
->queue
= blk_alloc_queue(GFP_KERNEL
);
1955 goto init_queue_failure
;
1957 disk
->queue
->cmd_size
= sizeof(struct scsi_request
);
1958 disk
->queue
->request_fn
= do_cciss_request
;
1959 disk
->queue
->queue_lock
= &h
->lock
;
1960 if (blk_init_allocated_queue(disk
->queue
) < 0)
1963 sprintf(disk
->disk_name
, "cciss/c%dd%d", h
->ctlr
, drv_index
);
1964 disk
->major
= h
->major
;
1965 disk
->first_minor
= drv_index
<< NWD_SHIFT
;
1966 disk
->fops
= &cciss_fops
;
1967 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
1969 disk
->private_data
= h
->drv
[drv_index
];
1971 /* Set up queue information */
1972 blk_queue_bounce_limit(disk
->queue
, h
->pdev
->dma_mask
);
1974 /* This is a hardware imposed limit. */
1975 blk_queue_max_segments(disk
->queue
, h
->maxsgentries
);
1977 blk_queue_max_hw_sectors(disk
->queue
, h
->cciss_max_sectors
);
1979 blk_queue_softirq_done(disk
->queue
, cciss_softirq_done
);
1981 disk
->queue
->queuedata
= h
;
1983 blk_queue_logical_block_size(disk
->queue
,
1984 h
->drv
[drv_index
]->block_size
);
1986 /* Make sure all queue data is written out before */
1987 /* setting h->drv[drv_index]->queue, as setting this */
1988 /* allows the interrupt handler to start the queue */
1990 h
->drv
[drv_index
]->queue
= disk
->queue
;
1991 device_add_disk(&h
->drv
[drv_index
]->dev
, disk
);
1995 blk_cleanup_queue(disk
->queue
);
2001 /* This function will check the usage_count of the drive to be updated/added.
2002 * If the usage_count is zero and it is a heretofore unknown drive, or,
2003 * the drive's capacity, geometry, or serial number has changed,
2004 * then the drive information will be updated and the disk will be
2005 * re-registered with the kernel. If these conditions don't hold,
2006 * then it will be left alone for the next reboot. The exception to this
2007 * is disk 0 which will always be left registered with the kernel since it
2008 * is also the controller node. Any changes to disk 0 will show up on
2011 static void cciss_update_drive_info(ctlr_info_t
*h
, int drv_index
,
2012 int first_time
, int via_ioctl
)
2014 struct gendisk
*disk
;
2015 InquiryData_struct
*inq_buff
= NULL
;
2016 unsigned int block_size
;
2017 sector_t total_size
;
2018 unsigned long flags
= 0;
2020 drive_info_struct
*drvinfo
;
2022 /* Get information about the disk and modify the driver structure */
2023 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
2024 drvinfo
= kzalloc(sizeof(*drvinfo
), GFP_KERNEL
);
2025 if (inq_buff
== NULL
|| drvinfo
== NULL
)
2028 /* testing to see if 16-byte CDBs are already being used */
2029 if (h
->cciss_read
== CCISS_READ_16
) {
2030 cciss_read_capacity_16(h
, drv_index
,
2031 &total_size
, &block_size
);
2034 cciss_read_capacity(h
, drv_index
, &total_size
, &block_size
);
2035 /* if read_capacity returns all F's this volume is >2TB */
2036 /* in size so we switch to 16-byte CDB's for all */
2037 /* read/write ops */
2038 if (total_size
== 0xFFFFFFFFULL
) {
2039 cciss_read_capacity_16(h
, drv_index
,
2040 &total_size
, &block_size
);
2041 h
->cciss_read
= CCISS_READ_16
;
2042 h
->cciss_write
= CCISS_WRITE_16
;
2044 h
->cciss_read
= CCISS_READ_10
;
2045 h
->cciss_write
= CCISS_WRITE_10
;
2049 cciss_geometry_inquiry(h
, drv_index
, total_size
, block_size
,
2051 drvinfo
->block_size
= block_size
;
2052 drvinfo
->nr_blocks
= total_size
+ 1;
2054 cciss_get_device_descr(h
, drv_index
, drvinfo
->vendor
,
2055 drvinfo
->model
, drvinfo
->rev
);
2056 cciss_get_serial_no(h
, drv_index
, drvinfo
->serial_no
,
2057 sizeof(drvinfo
->serial_no
));
2058 /* Save the lunid in case we deregister the disk, below. */
2059 memcpy(drvinfo
->LunID
, h
->drv
[drv_index
]->LunID
,
2060 sizeof(drvinfo
->LunID
));
2062 /* Is it the same disk we already know, and nothing's changed? */
2063 if (h
->drv
[drv_index
]->raid_level
!= -1 &&
2064 ((memcmp(drvinfo
->serial_no
,
2065 h
->drv
[drv_index
]->serial_no
, 16) == 0) &&
2066 drvinfo
->block_size
== h
->drv
[drv_index
]->block_size
&&
2067 drvinfo
->nr_blocks
== h
->drv
[drv_index
]->nr_blocks
&&
2068 drvinfo
->heads
== h
->drv
[drv_index
]->heads
&&
2069 drvinfo
->sectors
== h
->drv
[drv_index
]->sectors
&&
2070 drvinfo
->cylinders
== h
->drv
[drv_index
]->cylinders
))
2071 /* The disk is unchanged, nothing to update */
2074 /* If we get here it's not the same disk, or something's changed,
2075 * so we need to * deregister it, and re-register it, if it's not
2077 * If the disk already exists then deregister it before proceeding
2078 * (unless it's the first disk (for the controller node).
2080 if (h
->drv
[drv_index
]->raid_level
!= -1 && drv_index
!= 0) {
2081 dev_warn(&h
->pdev
->dev
, "disk %d has changed.\n", drv_index
);
2082 spin_lock_irqsave(&h
->lock
, flags
);
2083 h
->drv
[drv_index
]->busy_configuring
= 1;
2084 spin_unlock_irqrestore(&h
->lock
, flags
);
2086 /* deregister_disk sets h->drv[drv_index]->queue = NULL
2087 * which keeps the interrupt handler from starting
2090 ret
= deregister_disk(h
, drv_index
, 0, via_ioctl
);
2093 /* If the disk is in use return */
2097 /* Save the new information from cciss_geometry_inquiry
2098 * and serial number inquiry. If the disk was deregistered
2099 * above, then h->drv[drv_index] will be NULL.
2101 if (h
->drv
[drv_index
] == NULL
) {
2102 drvinfo
->device_initialized
= 0;
2103 h
->drv
[drv_index
] = drvinfo
;
2104 drvinfo
= NULL
; /* so it won't be freed below. */
2106 /* special case for cxd0 */
2107 h
->drv
[drv_index
]->block_size
= drvinfo
->block_size
;
2108 h
->drv
[drv_index
]->nr_blocks
= drvinfo
->nr_blocks
;
2109 h
->drv
[drv_index
]->heads
= drvinfo
->heads
;
2110 h
->drv
[drv_index
]->sectors
= drvinfo
->sectors
;
2111 h
->drv
[drv_index
]->cylinders
= drvinfo
->cylinders
;
2112 h
->drv
[drv_index
]->raid_level
= drvinfo
->raid_level
;
2113 memcpy(h
->drv
[drv_index
]->serial_no
, drvinfo
->serial_no
, 16);
2114 memcpy(h
->drv
[drv_index
]->vendor
, drvinfo
->vendor
,
2116 memcpy(h
->drv
[drv_index
]->model
, drvinfo
->model
, MODEL_LEN
+ 1);
2117 memcpy(h
->drv
[drv_index
]->rev
, drvinfo
->rev
, REV_LEN
+ 1);
2121 disk
= h
->gendisk
[drv_index
];
2122 set_capacity(disk
, h
->drv
[drv_index
]->nr_blocks
);
2124 /* If it's not disk 0 (drv_index != 0)
2125 * or if it was disk 0, but there was previously
2126 * no actual corresponding configured logical drive
2127 * (raid_leve == -1) then we want to update the
2128 * logical drive's information.
2130 if (drv_index
|| first_time
) {
2131 if (cciss_add_disk(h
, disk
, drv_index
) != 0) {
2132 cciss_free_gendisk(h
, drv_index
);
2133 cciss_free_drive_info(h
, drv_index
);
2134 dev_warn(&h
->pdev
->dev
, "could not update disk %d\n",
2145 dev_err(&h
->pdev
->dev
, "out of memory\n");
2149 /* This function will find the first index of the controllers drive array
2150 * that has a null drv pointer and allocate the drive info struct and
2151 * will return that index This is where new drives will be added.
2152 * If the index to be returned is greater than the highest_lun index for
2153 * the controller then highest_lun is set * to this new index.
2154 * If there are no available indexes or if tha allocation fails, then -1
2155 * is returned. * "controller_node" is used to know if this is a real
2156 * logical drive, or just the controller node, which determines if this
2157 * counts towards highest_lun.
2159 static int cciss_alloc_drive_info(ctlr_info_t
*h
, int controller_node
)
2162 drive_info_struct
*drv
;
2164 /* Search for an empty slot for our drive info */
2165 for (i
= 0; i
< CISS_MAX_LUN
; i
++) {
2167 /* if not cxd0 case, and it's occupied, skip it. */
2168 if (h
->drv
[i
] && i
!= 0)
2171 * If it's cxd0 case, and drv is alloc'ed already, and a
2172 * disk is configured there, skip it.
2174 if (i
== 0 && h
->drv
[i
] && h
->drv
[i
]->raid_level
!= -1)
2178 * We've found an empty slot. Update highest_lun
2179 * provided this isn't just the fake cxd0 controller node.
2181 if (i
> h
->highest_lun
&& !controller_node
)
2184 /* If adding a real disk at cxd0, and it's already alloc'ed */
2185 if (i
== 0 && h
->drv
[i
] != NULL
)
2189 * Found an empty slot, not already alloc'ed. Allocate it.
2190 * Mark it with raid_level == -1, so we know it's new later on.
2192 drv
= kzalloc(sizeof(*drv
), GFP_KERNEL
);
2195 drv
->raid_level
= -1; /* so we know it's new */
2202 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
)
2204 kfree(h
->drv
[drv_index
]);
2205 h
->drv
[drv_index
] = NULL
;
2208 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
)
2210 put_disk(h
->gendisk
[drv_index
]);
2211 h
->gendisk
[drv_index
] = NULL
;
2214 /* cciss_add_gendisk finds a free hba[]->drv structure
2215 * and allocates a gendisk if needed, and sets the lunid
2216 * in the drvinfo structure. It returns the index into
2217 * the ->drv[] array, or -1 if none are free.
2218 * is_controller_node indicates whether highest_lun should
2219 * count this disk, or if it's only being added to provide
2220 * a means to talk to the controller in case no logical
2221 * drives have yet been configured.
2223 static int cciss_add_gendisk(ctlr_info_t
*h
, unsigned char lunid
[],
2224 int controller_node
)
2228 drv_index
= cciss_alloc_drive_info(h
, controller_node
);
2229 if (drv_index
== -1)
2232 /*Check if the gendisk needs to be allocated */
2233 if (!h
->gendisk
[drv_index
]) {
2234 h
->gendisk
[drv_index
] =
2235 alloc_disk(1 << NWD_SHIFT
);
2236 if (!h
->gendisk
[drv_index
]) {
2237 dev_err(&h
->pdev
->dev
,
2238 "could not allocate a new disk %d\n",
2240 goto err_free_drive_info
;
2243 memcpy(h
->drv
[drv_index
]->LunID
, lunid
,
2244 sizeof(h
->drv
[drv_index
]->LunID
));
2245 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
2247 /* Don't need to mark this busy because nobody */
2248 /* else knows about this disk yet to contend */
2249 /* for access to it. */
2250 h
->drv
[drv_index
]->busy_configuring
= 0;
2255 cciss_free_gendisk(h
, drv_index
);
2256 err_free_drive_info
:
2257 cciss_free_drive_info(h
, drv_index
);
2261 /* This is for the special case of a controller which
2262 * has no logical drives. In this case, we still need
2263 * to register a disk so the controller can be accessed
2264 * by the Array Config Utility.
2266 static void cciss_add_controller_node(ctlr_info_t
*h
)
2268 struct gendisk
*disk
;
2271 if (h
->gendisk
[0] != NULL
) /* already did this? Then bail. */
2274 drv_index
= cciss_add_gendisk(h
, CTLR_LUNID
, 1);
2275 if (drv_index
== -1)
2277 h
->drv
[drv_index
]->block_size
= 512;
2278 h
->drv
[drv_index
]->nr_blocks
= 0;
2279 h
->drv
[drv_index
]->heads
= 0;
2280 h
->drv
[drv_index
]->sectors
= 0;
2281 h
->drv
[drv_index
]->cylinders
= 0;
2282 h
->drv
[drv_index
]->raid_level
= -1;
2283 memset(h
->drv
[drv_index
]->serial_no
, 0, 16);
2284 disk
= h
->gendisk
[drv_index
];
2285 if (cciss_add_disk(h
, disk
, drv_index
) == 0)
2287 cciss_free_gendisk(h
, drv_index
);
2288 cciss_free_drive_info(h
, drv_index
);
2290 dev_warn(&h
->pdev
->dev
, "could not add disk 0.\n");
2294 /* This function will add and remove logical drives from the Logical
2295 * drive array of the controller and maintain persistency of ordering
2296 * so that mount points are preserved until the next reboot. This allows
2297 * for the removal of logical drives in the middle of the drive array
2298 * without a re-ordering of those drives.
2300 * h = The controller to perform the operations on
2302 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
,
2306 ReportLunData_struct
*ld_buff
= NULL
;
2312 unsigned char lunid
[8] = CTLR_LUNID
;
2313 unsigned long flags
;
2315 if (!capable(CAP_SYS_RAWIO
))
2318 /* Set busy_configuring flag for this operation */
2319 spin_lock_irqsave(&h
->lock
, flags
);
2320 if (h
->busy_configuring
) {
2321 spin_unlock_irqrestore(&h
->lock
, flags
);
2324 h
->busy_configuring
= 1;
2325 spin_unlock_irqrestore(&h
->lock
, flags
);
2327 ld_buff
= kzalloc(sizeof(ReportLunData_struct
), GFP_KERNEL
);
2328 if (ld_buff
== NULL
)
2331 return_code
= sendcmd_withirq(h
, CISS_REPORT_LOG
, ld_buff
,
2332 sizeof(ReportLunData_struct
),
2333 0, CTLR_LUNID
, TYPE_CMD
);
2335 if (return_code
== IO_OK
)
2336 listlength
= be32_to_cpu(*(__be32
*) ld_buff
->LUNListLength
);
2337 else { /* reading number of logical volumes failed */
2338 dev_warn(&h
->pdev
->dev
,
2339 "report logical volume command failed\n");
2344 num_luns
= listlength
/ 8; /* 8 bytes per entry */
2345 if (num_luns
> CISS_MAX_LUN
) {
2346 num_luns
= CISS_MAX_LUN
;
2347 dev_warn(&h
->pdev
->dev
, "more luns configured"
2348 " on controller than can be handled by"
2353 cciss_add_controller_node(h
);
2355 /* Compare controller drive array to driver's drive array
2356 * to see if any drives are missing on the controller due
2357 * to action of Array Config Utility (user deletes drive)
2358 * and deregister logical drives which have disappeared.
2360 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2364 /* skip holes in the array from already deleted drives */
2365 if (h
->drv
[i
] == NULL
)
2368 for (j
= 0; j
< num_luns
; j
++) {
2369 memcpy(lunid
, &ld_buff
->LUN
[j
][0], sizeof(lunid
));
2370 if (memcmp(h
->drv
[i
]->LunID
, lunid
,
2371 sizeof(lunid
)) == 0) {
2377 /* Deregister it from the OS, it's gone. */
2378 spin_lock_irqsave(&h
->lock
, flags
);
2379 h
->drv
[i
]->busy_configuring
= 1;
2380 spin_unlock_irqrestore(&h
->lock
, flags
);
2381 return_code
= deregister_disk(h
, i
, 1, via_ioctl
);
2382 if (h
->drv
[i
] != NULL
)
2383 h
->drv
[i
]->busy_configuring
= 0;
2387 /* Compare controller drive array to driver's drive array.
2388 * Check for updates in the drive information and any new drives
2389 * on the controller due to ACU adding logical drives, or changing
2390 * a logical drive's size, etc. Reregister any new/changed drives
2392 for (i
= 0; i
< num_luns
; i
++) {
2397 memcpy(lunid
, &ld_buff
->LUN
[i
][0], sizeof(lunid
));
2398 /* Find if the LUN is already in the drive array
2399 * of the driver. If so then update its info
2400 * if not in use. If it does not exist then find
2401 * the first free index and add it.
2403 for (j
= 0; j
<= h
->highest_lun
; j
++) {
2404 if (h
->drv
[j
] != NULL
&&
2405 memcmp(h
->drv
[j
]->LunID
, lunid
,
2406 sizeof(h
->drv
[j
]->LunID
)) == 0) {
2413 /* check if the drive was found already in the array */
2415 drv_index
= cciss_add_gendisk(h
, lunid
, 0);
2416 if (drv_index
== -1)
2419 cciss_update_drive_info(h
, drv_index
, first_time
, via_ioctl
);
2424 h
->busy_configuring
= 0;
2425 /* We return -1 here to tell the ACU that we have registered/updated
2426 * all of the drives that we can and to keep it from calling us
2431 dev_err(&h
->pdev
->dev
, "out of memory\n");
2432 h
->busy_configuring
= 0;
2436 static void cciss_clear_drive_info(drive_info_struct
*drive_info
)
2438 /* zero out the disk size info */
2439 drive_info
->nr_blocks
= 0;
2440 drive_info
->block_size
= 0;
2441 drive_info
->heads
= 0;
2442 drive_info
->sectors
= 0;
2443 drive_info
->cylinders
= 0;
2444 drive_info
->raid_level
= -1;
2445 memset(drive_info
->serial_no
, 0, sizeof(drive_info
->serial_no
));
2446 memset(drive_info
->model
, 0, sizeof(drive_info
->model
));
2447 memset(drive_info
->rev
, 0, sizeof(drive_info
->rev
));
2448 memset(drive_info
->vendor
, 0, sizeof(drive_info
->vendor
));
2450 * don't clear the LUNID though, we need to remember which
2455 /* This function will deregister the disk and it's queue from the
2456 * kernel. It must be called with the controller lock held and the
2457 * drv structures busy_configuring flag set. It's parameters are:
2459 * disk = This is the disk to be deregistered
2460 * drv = This is the drive_info_struct associated with the disk to be
2461 * deregistered. It contains information about the disk used
2463 * clear_all = This flag determines whether or not the disk information
2464 * is going to be completely cleared out and the highest_lun
2465 * reset. Sometimes we want to clear out information about
2466 * the disk in preparation for re-adding it. In this case
2467 * the highest_lun should be left unchanged and the LunID
2468 * should not be cleared.
2470 * This indicates whether we've reached this path via ioctl.
2471 * This affects the maximum usage count allowed for c0d0 to be messed with.
2472 * If this path is reached via ioctl(), then the max_usage_count will
2473 * be 1, as the process calling ioctl() has got to have the device open.
2474 * If we get here via sysfs, then the max usage count will be zero.
2476 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
2477 int clear_all
, int via_ioctl
)
2480 struct gendisk
*disk
;
2481 drive_info_struct
*drv
;
2482 int recalculate_highest_lun
;
2484 if (!capable(CAP_SYS_RAWIO
))
2487 drv
= h
->drv
[drv_index
];
2488 disk
= h
->gendisk
[drv_index
];
2490 /* make sure logical volume is NOT is use */
2491 if (clear_all
|| (h
->gendisk
[0] == disk
)) {
2492 if (drv
->usage_count
> via_ioctl
)
2494 } else if (drv
->usage_count
> 0)
2497 recalculate_highest_lun
= (drv
== h
->drv
[h
->highest_lun
]);
2499 /* invalidate the devices and deregister the disk. If it is disk
2500 * zero do not deregister it but just zero out it's values. This
2501 * allows us to delete disk zero but keep the controller registered.
2503 if (h
->gendisk
[0] != disk
) {
2504 struct request_queue
*q
= disk
->queue
;
2505 if (disk
->flags
& GENHD_FL_UP
) {
2506 cciss_destroy_ld_sysfs_entry(h
, drv_index
, 0);
2510 blk_cleanup_queue(q
);
2511 /* If clear_all is set then we are deleting the logical
2512 * drive, not just refreshing its info. For drives
2513 * other than disk 0 we will call put_disk. We do not
2514 * do this for disk 0 as we need it to be able to
2515 * configure the controller.
2518 /* This isn't pretty, but we need to find the
2519 * disk in our array and NULL our the pointer.
2520 * This is so that we will call alloc_disk if
2521 * this index is used again later.
2523 for (i
=0; i
< CISS_MAX_LUN
; i
++){
2524 if (h
->gendisk
[i
] == disk
) {
2525 h
->gendisk
[i
] = NULL
;
2532 set_capacity(disk
, 0);
2533 cciss_clear_drive_info(drv
);
2538 /* if it was the last disk, find the new hightest lun */
2539 if (clear_all
&& recalculate_highest_lun
) {
2540 int newhighest
= -1;
2541 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2542 /* if the disk has size > 0, it is available */
2543 if (h
->drv
[i
] && h
->drv
[i
]->heads
)
2546 h
->highest_lun
= newhighest
;
2551 static int fill_cmd(ctlr_info_t
*h
, CommandList_struct
*c
, __u8 cmd
, void *buff
,
2552 size_t size
, __u8 page_code
, unsigned char *scsi3addr
,
2555 u64bit buff_dma_handle
;
2558 c
->cmd_type
= CMD_IOCTL_PEND
;
2559 c
->Header
.ReplyQueue
= 0;
2561 c
->Header
.SGList
= 1;
2562 c
->Header
.SGTotal
= 1;
2564 c
->Header
.SGList
= 0;
2565 c
->Header
.SGTotal
= 0;
2567 c
->Header
.Tag
.lower
= c
->busaddr
;
2568 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2570 c
->Request
.Type
.Type
= cmd_type
;
2571 if (cmd_type
== TYPE_CMD
) {
2574 /* are we trying to read a vital product page */
2575 if (page_code
!= 0) {
2576 c
->Request
.CDB
[1] = 0x01;
2577 c
->Request
.CDB
[2] = page_code
;
2579 c
->Request
.CDBLen
= 6;
2580 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2581 c
->Request
.Type
.Direction
= XFER_READ
;
2582 c
->Request
.Timeout
= 0;
2583 c
->Request
.CDB
[0] = CISS_INQUIRY
;
2584 c
->Request
.CDB
[4] = size
& 0xFF;
2586 case CISS_REPORT_LOG
:
2587 case CISS_REPORT_PHYS
:
2588 /* Talking to controller so It's a physical command
2589 mode = 00 target = 0. Nothing to write.
2591 c
->Request
.CDBLen
= 12;
2592 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2593 c
->Request
.Type
.Direction
= XFER_READ
;
2594 c
->Request
.Timeout
= 0;
2595 c
->Request
.CDB
[0] = cmd
;
2596 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2597 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2598 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2599 c
->Request
.CDB
[9] = size
& 0xFF;
2602 case CCISS_READ_CAPACITY
:
2603 c
->Request
.CDBLen
= 10;
2604 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2605 c
->Request
.Type
.Direction
= XFER_READ
;
2606 c
->Request
.Timeout
= 0;
2607 c
->Request
.CDB
[0] = cmd
;
2609 case CCISS_READ_CAPACITY_16
:
2610 c
->Request
.CDBLen
= 16;
2611 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2612 c
->Request
.Type
.Direction
= XFER_READ
;
2613 c
->Request
.Timeout
= 0;
2614 c
->Request
.CDB
[0] = cmd
;
2615 c
->Request
.CDB
[1] = 0x10;
2616 c
->Request
.CDB
[10] = (size
>> 24) & 0xFF;
2617 c
->Request
.CDB
[11] = (size
>> 16) & 0xFF;
2618 c
->Request
.CDB
[12] = (size
>> 8) & 0xFF;
2619 c
->Request
.CDB
[13] = size
& 0xFF;
2620 c
->Request
.Timeout
= 0;
2621 c
->Request
.CDB
[0] = cmd
;
2623 case CCISS_CACHE_FLUSH
:
2624 c
->Request
.CDBLen
= 12;
2625 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2626 c
->Request
.Type
.Direction
= XFER_WRITE
;
2627 c
->Request
.Timeout
= 0;
2628 c
->Request
.CDB
[0] = BMIC_WRITE
;
2629 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2630 c
->Request
.CDB
[7] = (size
>> 8) & 0xFF;
2631 c
->Request
.CDB
[8] = size
& 0xFF;
2633 case TEST_UNIT_READY
:
2634 c
->Request
.CDBLen
= 6;
2635 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2636 c
->Request
.Type
.Direction
= XFER_NONE
;
2637 c
->Request
.Timeout
= 0;
2640 dev_warn(&h
->pdev
->dev
, "Unknown Command 0x%c\n", cmd
);
2643 } else if (cmd_type
== TYPE_MSG
) {
2645 case CCISS_ABORT_MSG
:
2646 c
->Request
.CDBLen
= 12;
2647 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2648 c
->Request
.Type
.Direction
= XFER_WRITE
;
2649 c
->Request
.Timeout
= 0;
2650 c
->Request
.CDB
[0] = cmd
; /* abort */
2651 c
->Request
.CDB
[1] = 0; /* abort a command */
2652 /* buff contains the tag of the command to abort */
2653 memcpy(&c
->Request
.CDB
[4], buff
, 8);
2655 case CCISS_RESET_MSG
:
2656 c
->Request
.CDBLen
= 16;
2657 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2658 c
->Request
.Type
.Direction
= XFER_NONE
;
2659 c
->Request
.Timeout
= 0;
2660 memset(&c
->Request
.CDB
[0], 0, sizeof(c
->Request
.CDB
));
2661 c
->Request
.CDB
[0] = cmd
; /* reset */
2662 c
->Request
.CDB
[1] = CCISS_RESET_TYPE_TARGET
;
2664 case CCISS_NOOP_MSG
:
2665 c
->Request
.CDBLen
= 1;
2666 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2667 c
->Request
.Type
.Direction
= XFER_WRITE
;
2668 c
->Request
.Timeout
= 0;
2669 c
->Request
.CDB
[0] = cmd
;
2672 dev_warn(&h
->pdev
->dev
,
2673 "unknown message type %d\n", cmd
);
2677 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2680 /* Fill in the scatter gather information */
2682 buff_dma_handle
.val
= (__u64
) pci_map_single(h
->pdev
,
2684 PCI_DMA_BIDIRECTIONAL
);
2685 c
->SG
[0].Addr
.lower
= buff_dma_handle
.val32
.lower
;
2686 c
->SG
[0].Addr
.upper
= buff_dma_handle
.val32
.upper
;
2687 c
->SG
[0].Len
= size
;
2688 c
->SG
[0].Ext
= 0; /* we are not chaining */
2693 static int cciss_send_reset(ctlr_info_t
*h
, unsigned char *scsi3addr
,
2696 CommandList_struct
*c
;
2702 return_status
= fill_cmd(h
, c
, CCISS_RESET_MSG
, NULL
, 0, 0,
2703 CTLR_LUNID
, TYPE_MSG
);
2704 c
->Request
.CDB
[1] = reset_type
; /* fill_cmd defaults to target reset */
2705 if (return_status
!= IO_OK
) {
2706 cmd_special_free(h
, c
);
2707 return return_status
;
2710 enqueue_cmd_and_start_io(h
, c
);
2711 /* Don't wait for completion, the reset won't complete. Don't free
2712 * the command either. This is the last command we will send before
2713 * re-initializing everything, so it doesn't matter and won't leak.
2718 static int check_target_status(ctlr_info_t
*h
, CommandList_struct
*c
)
2720 switch (c
->err_info
->ScsiStatus
) {
2723 case SAM_STAT_CHECK_CONDITION
:
2724 switch (0xf & c
->err_info
->SenseInfo
[2]) {
2725 case 0: return IO_OK
; /* no sense */
2726 case 1: return IO_OK
; /* recovered error */
2728 if (check_for_unit_attention(h
, c
))
2729 return IO_NEEDS_RETRY
;
2730 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x "
2731 "check condition, sense key = 0x%02x\n",
2732 c
->Request
.CDB
[0], c
->err_info
->SenseInfo
[2]);
2736 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x"
2737 "scsi status = 0x%02x\n",
2738 c
->Request
.CDB
[0], c
->err_info
->ScsiStatus
);
2744 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
)
2746 int return_status
= IO_OK
;
2748 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2751 switch (c
->err_info
->CommandStatus
) {
2752 case CMD_TARGET_STATUS
:
2753 return_status
= check_target_status(h
, c
);
2755 case CMD_DATA_UNDERRUN
:
2756 case CMD_DATA_OVERRUN
:
2757 /* expected for inquiry and report lun commands */
2760 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x is "
2761 "reported invalid\n", c
->Request
.CDB
[0]);
2762 return_status
= IO_ERROR
;
2764 case CMD_PROTOCOL_ERR
:
2765 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x has "
2766 "protocol error\n", c
->Request
.CDB
[0]);
2767 return_status
= IO_ERROR
;
2769 case CMD_HARDWARE_ERR
:
2770 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2771 " hardware error\n", c
->Request
.CDB
[0]);
2772 return_status
= IO_ERROR
;
2774 case CMD_CONNECTION_LOST
:
2775 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2776 "connection lost\n", c
->Request
.CDB
[0]);
2777 return_status
= IO_ERROR
;
2780 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x was "
2781 "aborted\n", c
->Request
.CDB
[0]);
2782 return_status
= IO_ERROR
;
2784 case CMD_ABORT_FAILED
:
2785 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x reports "
2786 "abort failed\n", c
->Request
.CDB
[0]);
2787 return_status
= IO_ERROR
;
2789 case CMD_UNSOLICITED_ABORT
:
2790 dev_warn(&h
->pdev
->dev
, "unsolicited abort 0x%02x\n",
2792 return_status
= IO_NEEDS_RETRY
;
2794 case CMD_UNABORTABLE
:
2795 dev_warn(&h
->pdev
->dev
, "cmd unabortable\n");
2796 return_status
= IO_ERROR
;
2799 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x returned "
2800 "unknown status %x\n", c
->Request
.CDB
[0],
2801 c
->err_info
->CommandStatus
);
2802 return_status
= IO_ERROR
;
2804 return return_status
;
2807 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
2810 DECLARE_COMPLETION_ONSTACK(wait
);
2811 u64bit buff_dma_handle
;
2812 int return_status
= IO_OK
;
2816 enqueue_cmd_and_start_io(h
, c
);
2818 wait_for_completion(&wait
);
2820 if (c
->err_info
->CommandStatus
== 0 || !attempt_retry
)
2823 return_status
= process_sendcmd_error(h
, c
);
2825 if (return_status
== IO_NEEDS_RETRY
&&
2826 c
->retry_count
< MAX_CMD_RETRIES
) {
2827 dev_warn(&h
->pdev
->dev
, "retrying 0x%02x\n",
2830 /* erase the old error information */
2831 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
2832 return_status
= IO_OK
;
2833 reinit_completion(&wait
);
2838 /* unlock the buffers from DMA */
2839 buff_dma_handle
.val32
.lower
= c
->SG
[0].Addr
.lower
;
2840 buff_dma_handle
.val32
.upper
= c
->SG
[0].Addr
.upper
;
2841 pci_unmap_single(h
->pdev
, (dma_addr_t
) buff_dma_handle
.val
,
2842 c
->SG
[0].Len
, PCI_DMA_BIDIRECTIONAL
);
2843 return return_status
;
2846 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
2847 __u8 page_code
, unsigned char scsi3addr
[],
2850 CommandList_struct
*c
;
2853 c
= cmd_special_alloc(h
);
2856 return_status
= fill_cmd(h
, c
, cmd
, buff
, size
, page_code
,
2857 scsi3addr
, cmd_type
);
2858 if (return_status
== IO_OK
)
2859 return_status
= sendcmd_withirq_core(h
, c
, 1);
2861 cmd_special_free(h
, c
);
2862 return return_status
;
2865 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
2866 sector_t total_size
,
2867 unsigned int block_size
,
2868 InquiryData_struct
*inq_buff
,
2869 drive_info_struct
*drv
)
2873 unsigned char scsi3addr
[8];
2875 memset(inq_buff
, 0, sizeof(InquiryData_struct
));
2876 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2877 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
2878 sizeof(*inq_buff
), 0xC1, scsi3addr
, TYPE_CMD
);
2879 if (return_code
== IO_OK
) {
2880 if (inq_buff
->data_byte
[8] == 0xFF) {
2881 dev_warn(&h
->pdev
->dev
,
2882 "reading geometry failed, volume "
2883 "does not support reading geometry\n");
2885 drv
->sectors
= 32; /* Sectors per track */
2886 drv
->cylinders
= total_size
+ 1;
2887 drv
->raid_level
= RAID_UNKNOWN
;
2889 drv
->heads
= inq_buff
->data_byte
[6];
2890 drv
->sectors
= inq_buff
->data_byte
[7];
2891 drv
->cylinders
= (inq_buff
->data_byte
[4] & 0xff) << 8;
2892 drv
->cylinders
+= inq_buff
->data_byte
[5];
2893 drv
->raid_level
= inq_buff
->data_byte
[8];
2895 drv
->block_size
= block_size
;
2896 drv
->nr_blocks
= total_size
+ 1;
2897 t
= drv
->heads
* drv
->sectors
;
2899 sector_t real_size
= total_size
+ 1;
2900 unsigned long rem
= sector_div(real_size
, t
);
2903 drv
->cylinders
= real_size
;
2905 } else { /* Get geometry failed */
2906 dev_warn(&h
->pdev
->dev
, "reading geometry failed\n");
2911 cciss_read_capacity(ctlr_info_t
*h
, int logvol
, sector_t
*total_size
,
2912 unsigned int *block_size
)
2914 ReadCapdata_struct
*buf
;
2916 unsigned char scsi3addr
[8];
2918 buf
= kzalloc(sizeof(ReadCapdata_struct
), GFP_KERNEL
);
2920 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2924 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2925 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY
, buf
,
2926 sizeof(ReadCapdata_struct
), 0, scsi3addr
, TYPE_CMD
);
2927 if (return_code
== IO_OK
) {
2928 *total_size
= be32_to_cpu(*(__be32
*) buf
->total_size
);
2929 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2930 } else { /* read capacity command failed */
2931 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2933 *block_size
= BLOCK_SIZE
;
2938 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
2939 sector_t
*total_size
, unsigned int *block_size
)
2941 ReadCapdata_struct_16
*buf
;
2943 unsigned char scsi3addr
[8];
2945 buf
= kzalloc(sizeof(ReadCapdata_struct_16
), GFP_KERNEL
);
2947 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2951 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2952 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY_16
,
2953 buf
, sizeof(ReadCapdata_struct_16
),
2954 0, scsi3addr
, TYPE_CMD
);
2955 if (return_code
== IO_OK
) {
2956 *total_size
= be64_to_cpu(*(__be64
*) buf
->total_size
);
2957 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2958 } else { /* read capacity command failed */
2959 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2961 *block_size
= BLOCK_SIZE
;
2963 dev_info(&h
->pdev
->dev
, " blocks= %llu block_size= %d\n",
2964 (unsigned long long)*total_size
+1, *block_size
);
2968 static int cciss_revalidate(struct gendisk
*disk
)
2970 ctlr_info_t
*h
= get_host(disk
);
2971 drive_info_struct
*drv
= get_drv(disk
);
2974 unsigned int block_size
;
2975 sector_t total_size
;
2976 InquiryData_struct
*inq_buff
= NULL
;
2978 for (logvol
= 0; logvol
<= h
->highest_lun
; logvol
++) {
2979 if (!h
->drv
[logvol
])
2981 if (memcmp(h
->drv
[logvol
]->LunID
, drv
->LunID
,
2982 sizeof(drv
->LunID
)) == 0) {
2991 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
2992 if (inq_buff
== NULL
) {
2993 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2996 if (h
->cciss_read
== CCISS_READ_10
) {
2997 cciss_read_capacity(h
, logvol
,
2998 &total_size
, &block_size
);
3000 cciss_read_capacity_16(h
, logvol
,
3001 &total_size
, &block_size
);
3003 cciss_geometry_inquiry(h
, logvol
, total_size
, block_size
,
3006 blk_queue_logical_block_size(drv
->queue
, drv
->block_size
);
3007 set_capacity(disk
, drv
->nr_blocks
);
3014 * Map (physical) PCI mem into (virtual) kernel space
3016 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
3018 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
3019 ulong page_offs
= ((ulong
) base
) - page_base
;
3020 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
3022 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
3026 * Takes jobs of the Q and sends them to the hardware, then puts it on
3027 * the Q to wait for completion.
3029 static void start_io(ctlr_info_t
*h
)
3031 CommandList_struct
*c
;
3033 while (!list_empty(&h
->reqQ
)) {
3034 c
= list_entry(h
->reqQ
.next
, CommandList_struct
, list
);
3035 /* can't do anything if fifo is full */
3036 if ((h
->access
.fifo_full(h
))) {
3037 dev_warn(&h
->pdev
->dev
, "fifo full\n");
3041 /* Get the first entry from the Request Q */
3045 /* Tell the controller execute command */
3046 h
->access
.submit_command(h
, c
);
3048 /* Put job onto the completed Q */
3053 /* Assumes that h->lock is held. */
3054 /* Zeros out the error record and then resends the command back */
3055 /* to the controller */
3056 static inline void resend_cciss_cmd(ctlr_info_t
*h
, CommandList_struct
*c
)
3058 /* erase the old error information */
3059 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
3061 /* add it to software queue and then send it to the controller */
3064 if (h
->Qdepth
> h
->maxQsinceinit
)
3065 h
->maxQsinceinit
= h
->Qdepth
;
3070 static inline unsigned int make_status_bytes(unsigned int scsi_status_byte
,
3071 unsigned int msg_byte
, unsigned int host_byte
,
3072 unsigned int driver_byte
)
3074 /* inverse of macros in scsi.h */
3075 return (scsi_status_byte
& 0xff) |
3076 ((msg_byte
& 0xff) << 8) |
3077 ((host_byte
& 0xff) << 16) |
3078 ((driver_byte
& 0xff) << 24);
3081 static inline int evaluate_target_status(ctlr_info_t
*h
,
3082 CommandList_struct
*cmd
, int *retry_cmd
)
3084 unsigned char sense_key
;
3085 unsigned char status_byte
, msg_byte
, host_byte
, driver_byte
;
3089 /* If we get in here, it means we got "target status", that is, scsi status */
3090 status_byte
= cmd
->err_info
->ScsiStatus
;
3091 driver_byte
= DRIVER_OK
;
3092 msg_byte
= cmd
->err_info
->CommandStatus
; /* correct? seems too device specific */
3094 if (blk_rq_is_passthrough(cmd
->rq
))
3095 host_byte
= DID_PASSTHROUGH
;
3099 error_value
= make_status_bytes(status_byte
, msg_byte
,
3100 host_byte
, driver_byte
);
3102 if (cmd
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
) {
3103 if (!blk_rq_is_passthrough(cmd
->rq
))
3104 dev_warn(&h
->pdev
->dev
, "cmd %p "
3105 "has SCSI Status 0x%x\n",
3106 cmd
, cmd
->err_info
->ScsiStatus
);
3110 /* check the sense key */
3111 sense_key
= 0xf & cmd
->err_info
->SenseInfo
[2];
3112 /* no status or recovered error */
3113 if (((sense_key
== 0x0) || (sense_key
== 0x1)) &&
3114 !blk_rq_is_passthrough(cmd
->rq
))
3117 if (check_for_unit_attention(h
, cmd
)) {
3118 *retry_cmd
= !blk_rq_is_passthrough(cmd
->rq
);
3122 /* Not SG_IO or similar? */
3123 if (!blk_rq_is_passthrough(cmd
->rq
)) {
3124 if (error_value
!= 0)
3125 dev_warn(&h
->pdev
->dev
, "cmd %p has CHECK CONDITION"
3126 " sense key = 0x%x\n", cmd
, sense_key
);
3130 scsi_req(cmd
->rq
)->sense_len
= cmd
->err_info
->SenseLen
;
3134 /* checks the status of the job and calls complete buffers to mark all
3135 * buffers for the completed job. Note that this function does not need
3136 * to hold the hba/queue lock.
3138 static inline void complete_command(ctlr_info_t
*h
, CommandList_struct
*cmd
,
3142 struct request
*rq
= cmd
->rq
;
3147 rq
->errors
= make_status_bytes(0, 0, 0, DRIVER_TIMEOUT
);
3149 if (cmd
->err_info
->CommandStatus
== 0) /* no error has occurred */
3150 goto after_error_processing
;
3152 switch (cmd
->err_info
->CommandStatus
) {
3153 case CMD_TARGET_STATUS
:
3154 rq
->errors
= evaluate_target_status(h
, cmd
, &retry_cmd
);
3156 case CMD_DATA_UNDERRUN
:
3157 if (!blk_rq_is_passthrough(cmd
->rq
)) {
3158 dev_warn(&h
->pdev
->dev
, "cmd %p has"
3159 " completed with data underrun "
3163 case CMD_DATA_OVERRUN
:
3164 if (!blk_rq_is_passthrough(cmd
->rq
))
3165 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has"
3166 " completed with data overrun "
3170 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p is "
3171 "reported invalid\n", cmd
);
3172 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3173 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3174 blk_rq_is_passthrough(cmd
->rq
) ?
3175 DID_PASSTHROUGH
: DID_ERROR
);
3177 case CMD_PROTOCOL_ERR
:
3178 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has "
3179 "protocol error\n", cmd
);
3180 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3181 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3182 blk_rq_is_passthrough(cmd
->rq
) ?
3183 DID_PASSTHROUGH
: DID_ERROR
);
3185 case CMD_HARDWARE_ERR
:
3186 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3187 " hardware error\n", cmd
);
3188 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3189 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3190 blk_rq_is_passthrough(cmd
->rq
) ?
3191 DID_PASSTHROUGH
: DID_ERROR
);
3193 case CMD_CONNECTION_LOST
:
3194 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3195 "connection lost\n", cmd
);
3196 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3197 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3198 blk_rq_is_passthrough(cmd
->rq
) ?
3199 DID_PASSTHROUGH
: DID_ERROR
);
3202 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p was "
3204 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3205 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3206 blk_rq_is_passthrough(cmd
->rq
) ?
3207 DID_PASSTHROUGH
: DID_ABORT
);
3209 case CMD_ABORT_FAILED
:
3210 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p reports "
3211 "abort failed\n", cmd
);
3212 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3213 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3214 blk_rq_is_passthrough(cmd
->rq
) ?
3215 DID_PASSTHROUGH
: DID_ERROR
);
3217 case CMD_UNSOLICITED_ABORT
:
3218 dev_warn(&h
->pdev
->dev
, "cciss%d: unsolicited "
3219 "abort %p\n", h
->ctlr
, cmd
);
3220 if (cmd
->retry_count
< MAX_CMD_RETRIES
) {
3222 dev_warn(&h
->pdev
->dev
, "retrying %p\n", cmd
);
3225 dev_warn(&h
->pdev
->dev
,
3226 "%p retried too many times\n", cmd
);
3227 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3228 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3229 blk_rq_is_passthrough(cmd
->rq
) ?
3230 DID_PASSTHROUGH
: DID_ABORT
);
3233 dev_warn(&h
->pdev
->dev
, "cmd %p timedout\n", cmd
);
3234 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3235 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3236 blk_rq_is_passthrough(cmd
->rq
) ?
3237 DID_PASSTHROUGH
: DID_ERROR
);
3239 case CMD_UNABORTABLE
:
3240 dev_warn(&h
->pdev
->dev
, "cmd %p unabortable\n", cmd
);
3241 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3242 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3243 blk_rq_is_passthrough(cmd
->rq
) ?
3244 DID_PASSTHROUGH
: DID_ERROR
);
3247 dev_warn(&h
->pdev
->dev
, "cmd %p returned "
3248 "unknown status %x\n", cmd
,
3249 cmd
->err_info
->CommandStatus
);
3250 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3251 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3252 blk_rq_is_passthrough(cmd
->rq
) ?
3253 DID_PASSTHROUGH
: DID_ERROR
);
3256 after_error_processing
:
3258 /* We need to return this command */
3260 resend_cciss_cmd(h
, cmd
);
3263 cmd
->rq
->completion_data
= cmd
;
3264 blk_complete_request(cmd
->rq
);
3267 static inline u32
cciss_tag_contains_index(u32 tag
)
3269 #define DIRECT_LOOKUP_BIT 0x10
3270 return tag
& DIRECT_LOOKUP_BIT
;
3273 static inline u32
cciss_tag_to_index(u32 tag
)
3275 #define DIRECT_LOOKUP_SHIFT 5
3276 return tag
>> DIRECT_LOOKUP_SHIFT
;
3279 static inline u32
cciss_tag_discard_error_bits(ctlr_info_t
*h
, u32 tag
)
3281 #define CCISS_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
3282 #define CCISS_SIMPLE_ERROR_BITS 0x03
3283 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
3284 return tag
& ~CCISS_PERF_ERROR_BITS
;
3285 return tag
& ~CCISS_SIMPLE_ERROR_BITS
;
3288 static inline void cciss_mark_tag_indexed(u32
*tag
)
3290 *tag
|= DIRECT_LOOKUP_BIT
;
3293 static inline void cciss_set_tag_index(u32
*tag
, u32 index
)
3295 *tag
|= (index
<< DIRECT_LOOKUP_SHIFT
);
3299 * Get a request and submit it to the controller.
3301 static void do_cciss_request(struct request_queue
*q
)
3303 ctlr_info_t
*h
= q
->queuedata
;
3304 CommandList_struct
*c
;
3307 struct request
*creq
;
3309 struct scatterlist
*tmp_sg
;
3310 SGDescriptor_struct
*curr_sg
;
3311 drive_info_struct
*drv
;
3317 creq
= blk_peek_request(q
);
3321 BUG_ON(creq
->nr_phys_segments
> h
->maxsgentries
);
3327 blk_start_request(creq
);
3329 tmp_sg
= h
->scatter_list
[c
->cmdindex
];
3330 spin_unlock_irq(q
->queue_lock
);
3332 c
->cmd_type
= CMD_RWREQ
;
3335 /* fill in the request */
3336 drv
= creq
->rq_disk
->private_data
;
3337 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
3338 /* got command from pool, so use the command block index instead */
3339 /* for direct lookups. */
3340 /* The first 2 bits are reserved for controller error reporting. */
3341 cciss_set_tag_index(&c
->Header
.Tag
.lower
, c
->cmdindex
);
3342 cciss_mark_tag_indexed(&c
->Header
.Tag
.lower
);
3343 memcpy(&c
->Header
.LUN
, drv
->LunID
, sizeof(drv
->LunID
));
3344 c
->Request
.CDBLen
= 10; /* 12 byte commands not in FW yet; */
3345 c
->Request
.Type
.Type
= TYPE_CMD
; /* It is a command. */
3346 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3347 c
->Request
.Type
.Direction
=
3348 (rq_data_dir(creq
) == READ
) ? XFER_READ
: XFER_WRITE
;
3349 c
->Request
.Timeout
= 0; /* Don't time out */
3351 (rq_data_dir(creq
) == READ
) ? h
->cciss_read
: h
->cciss_write
;
3352 start_blk
= blk_rq_pos(creq
);
3353 dev_dbg(&h
->pdev
->dev
, "sector =%d nr_sectors=%d\n",
3354 (int)blk_rq_pos(creq
), (int)blk_rq_sectors(creq
));
3355 sg_init_table(tmp_sg
, h
->maxsgentries
);
3356 seg
= blk_rq_map_sg(q
, creq
, tmp_sg
);
3358 /* get the DMA records for the setup */
3359 if (c
->Request
.Type
.Direction
== XFER_READ
)
3360 dir
= PCI_DMA_FROMDEVICE
;
3362 dir
= PCI_DMA_TODEVICE
;
3368 for (i
= 0; i
< seg
; i
++) {
3369 if (((sg_index
+1) == (h
->max_cmd_sgentries
)) &&
3370 !chained
&& ((seg
- i
) > 1)) {
3371 /* Point to next chain block. */
3372 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
3376 curr_sg
[sg_index
].Len
= tmp_sg
[i
].length
;
3377 temp64
.val
= (__u64
) pci_map_page(h
->pdev
, sg_page(&tmp_sg
[i
]),
3379 tmp_sg
[i
].length
, dir
);
3380 if (dma_mapping_error(&h
->pdev
->dev
, temp64
.val
)) {
3381 dev_warn(&h
->pdev
->dev
,
3382 "%s: error mapping page for DMA\n", __func__
);
3383 creq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3389 curr_sg
[sg_index
].Addr
.lower
= temp64
.val32
.lower
;
3390 curr_sg
[sg_index
].Addr
.upper
= temp64
.val32
.upper
;
3391 curr_sg
[sg_index
].Ext
= 0; /* we are not chaining */
3395 if (cciss_map_sg_chain_block(h
, c
, h
->cmd_sg_list
[c
->cmdindex
],
3396 (seg
- (h
->max_cmd_sgentries
- 1)) *
3397 sizeof(SGDescriptor_struct
))) {
3398 creq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3406 /* track how many SG entries we are using */
3410 dev_dbg(&h
->pdev
->dev
, "Submitting %u sectors in %d segments "
3412 blk_rq_sectors(creq
), seg
, chained
);
3414 c
->Header
.SGTotal
= seg
+ chained
;
3415 if (seg
<= h
->max_cmd_sgentries
)
3416 c
->Header
.SGList
= c
->Header
.SGTotal
;
3418 c
->Header
.SGList
= h
->max_cmd_sgentries
;
3419 set_performant_mode(h
, c
);
3421 switch (req_op(creq
)) {
3424 if(h
->cciss_read
== CCISS_READ_10
) {
3425 c
->Request
.CDB
[1] = 0;
3426 c
->Request
.CDB
[2] = (start_blk
>> 24) & 0xff; /* MSB */
3427 c
->Request
.CDB
[3] = (start_blk
>> 16) & 0xff;
3428 c
->Request
.CDB
[4] = (start_blk
>> 8) & 0xff;
3429 c
->Request
.CDB
[5] = start_blk
& 0xff;
3430 c
->Request
.CDB
[6] = 0; /* (sect >> 24) & 0xff; MSB */
3431 c
->Request
.CDB
[7] = (blk_rq_sectors(creq
) >> 8) & 0xff;
3432 c
->Request
.CDB
[8] = blk_rq_sectors(creq
) & 0xff;
3433 c
->Request
.CDB
[9] = c
->Request
.CDB
[11] = c
->Request
.CDB
[12] = 0;
3435 u32 upper32
= upper_32_bits(start_blk
);
3437 c
->Request
.CDBLen
= 16;
3438 c
->Request
.CDB
[1]= 0;
3439 c
->Request
.CDB
[2]= (upper32
>> 24) & 0xff; /* MSB */
3440 c
->Request
.CDB
[3]= (upper32
>> 16) & 0xff;
3441 c
->Request
.CDB
[4]= (upper32
>> 8) & 0xff;
3442 c
->Request
.CDB
[5]= upper32
& 0xff;
3443 c
->Request
.CDB
[6]= (start_blk
>> 24) & 0xff;
3444 c
->Request
.CDB
[7]= (start_blk
>> 16) & 0xff;
3445 c
->Request
.CDB
[8]= (start_blk
>> 8) & 0xff;
3446 c
->Request
.CDB
[9]= start_blk
& 0xff;
3447 c
->Request
.CDB
[10]= (blk_rq_sectors(creq
) >> 24) & 0xff;
3448 c
->Request
.CDB
[11]= (blk_rq_sectors(creq
) >> 16) & 0xff;
3449 c
->Request
.CDB
[12]= (blk_rq_sectors(creq
) >> 8) & 0xff;
3450 c
->Request
.CDB
[13]= blk_rq_sectors(creq
) & 0xff;
3451 c
->Request
.CDB
[14] = c
->Request
.CDB
[15] = 0;
3454 case REQ_OP_SCSI_IN
:
3455 case REQ_OP_SCSI_OUT
:
3456 c
->Request
.CDBLen
= scsi_req(creq
)->cmd_len
;
3457 memcpy(c
->Request
.CDB
, scsi_req(creq
)->cmd
, BLK_MAX_CDB
);
3458 scsi_req(creq
)->sense
= c
->err_info
->SenseInfo
;
3461 dev_warn(&h
->pdev
->dev
, "bad request type %d\n",
3466 spin_lock_irq(q
->queue_lock
);
3470 if (h
->Qdepth
> h
->maxQsinceinit
)
3471 h
->maxQsinceinit
= h
->Qdepth
;
3477 /* We will already have the driver lock here so not need
3483 static inline unsigned long get_next_completion(ctlr_info_t
*h
)
3485 return h
->access
.command_completed(h
);
3488 static inline int interrupt_pending(ctlr_info_t
*h
)
3490 return h
->access
.intr_pending(h
);
3493 static inline long interrupt_not_for_us(ctlr_info_t
*h
)
3495 return ((h
->access
.intr_pending(h
) == 0) ||
3496 (h
->interrupts_enabled
== 0));
3499 static inline int bad_tag(ctlr_info_t
*h
, u32 tag_index
,
3502 if (unlikely(tag_index
>= h
->nr_cmds
)) {
3503 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
3509 static inline void finish_cmd(ctlr_info_t
*h
, CommandList_struct
*c
,
3513 if (likely(c
->cmd_type
== CMD_RWREQ
))
3514 complete_command(h
, c
, 0);
3515 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3516 complete(c
->waiting
);
3517 #ifdef CONFIG_CISS_SCSI_TAPE
3518 else if (c
->cmd_type
== CMD_SCSI
)
3519 complete_scsi_command(c
, 0, raw_tag
);
3523 static inline u32
next_command(ctlr_info_t
*h
)
3527 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
3528 return h
->access
.command_completed(h
);
3530 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
3531 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
3532 (h
->reply_pool_head
)++;
3533 h
->commands_outstanding
--;
3537 /* Check for wraparound */
3538 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
3539 h
->reply_pool_head
= h
->reply_pool
;
3540 h
->reply_pool_wraparound
^= 1;
3545 /* process completion of an indexed ("direct lookup") command */
3546 static inline u32
process_indexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3549 CommandList_struct
*c
;
3551 tag_index
= cciss_tag_to_index(raw_tag
);
3552 if (bad_tag(h
, tag_index
, raw_tag
))
3553 return next_command(h
);
3554 c
= h
->cmd_pool
+ tag_index
;
3555 finish_cmd(h
, c
, raw_tag
);
3556 return next_command(h
);
3559 /* process completion of a non-indexed command */
3560 static inline u32
process_nonindexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3562 CommandList_struct
*c
= NULL
;
3563 __u32 busaddr_masked
, tag_masked
;
3565 tag_masked
= cciss_tag_discard_error_bits(h
, raw_tag
);
3566 list_for_each_entry(c
, &h
->cmpQ
, list
) {
3567 busaddr_masked
= cciss_tag_discard_error_bits(h
, c
->busaddr
);
3568 if (busaddr_masked
== tag_masked
) {
3569 finish_cmd(h
, c
, raw_tag
);
3570 return next_command(h
);
3573 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3574 return next_command(h
);
3577 /* Some controllers, like p400, will give us one interrupt
3578 * after a soft reset, even if we turned interrupts off.
3579 * Only need to check for this in the cciss_xxx_discard_completions
3582 static int ignore_bogus_interrupt(ctlr_info_t
*h
)
3584 if (likely(!reset_devices
))
3587 if (likely(h
->interrupts_enabled
))
3590 dev_info(&h
->pdev
->dev
, "Received interrupt while interrupts disabled "
3591 "(known firmware bug.) Ignoring.\n");
3596 static irqreturn_t
cciss_intx_discard_completions(int irq
, void *dev_id
)
3598 ctlr_info_t
*h
= dev_id
;
3599 unsigned long flags
;
3602 if (ignore_bogus_interrupt(h
))
3605 if (interrupt_not_for_us(h
))
3607 spin_lock_irqsave(&h
->lock
, flags
);
3608 while (interrupt_pending(h
)) {
3609 raw_tag
= get_next_completion(h
);
3610 while (raw_tag
!= FIFO_EMPTY
)
3611 raw_tag
= next_command(h
);
3613 spin_unlock_irqrestore(&h
->lock
, flags
);
3617 static irqreturn_t
cciss_msix_discard_completions(int irq
, void *dev_id
)
3619 ctlr_info_t
*h
= dev_id
;
3620 unsigned long flags
;
3623 if (ignore_bogus_interrupt(h
))
3626 spin_lock_irqsave(&h
->lock
, flags
);
3627 raw_tag
= get_next_completion(h
);
3628 while (raw_tag
!= FIFO_EMPTY
)
3629 raw_tag
= next_command(h
);
3630 spin_unlock_irqrestore(&h
->lock
, flags
);
3634 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
)
3636 ctlr_info_t
*h
= dev_id
;
3637 unsigned long flags
;
3640 if (interrupt_not_for_us(h
))
3642 spin_lock_irqsave(&h
->lock
, flags
);
3643 while (interrupt_pending(h
)) {
3644 raw_tag
= get_next_completion(h
);
3645 while (raw_tag
!= FIFO_EMPTY
) {
3646 if (cciss_tag_contains_index(raw_tag
))
3647 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3649 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3652 spin_unlock_irqrestore(&h
->lock
, flags
);
3656 /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never
3657 * check the interrupt pending register because it is not set.
3659 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
)
3661 ctlr_info_t
*h
= dev_id
;
3662 unsigned long flags
;
3665 spin_lock_irqsave(&h
->lock
, flags
);
3666 raw_tag
= get_next_completion(h
);
3667 while (raw_tag
!= FIFO_EMPTY
) {
3668 if (cciss_tag_contains_index(raw_tag
))
3669 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3671 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3673 spin_unlock_irqrestore(&h
->lock
, flags
);
3678 * add_to_scan_list() - add controller to rescan queue
3679 * @h: Pointer to the controller.
3681 * Adds the controller to the rescan queue if not already on the queue.
3683 * returns 1 if added to the queue, 0 if skipped (could be on the
3684 * queue already, or the controller could be initializing or shutting
3687 static int add_to_scan_list(struct ctlr_info
*h
)
3689 struct ctlr_info
*test_h
;
3693 if (h
->busy_initializing
)
3696 if (!mutex_trylock(&h
->busy_shutting_down
))
3699 mutex_lock(&scan_mutex
);
3700 list_for_each_entry(test_h
, &scan_q
, scan_list
) {
3706 if (!found
&& !h
->busy_scanning
) {
3707 reinit_completion(&h
->scan_wait
);
3708 list_add_tail(&h
->scan_list
, &scan_q
);
3711 mutex_unlock(&scan_mutex
);
3712 mutex_unlock(&h
->busy_shutting_down
);
3718 * remove_from_scan_list() - remove controller from rescan queue
3719 * @h: Pointer to the controller.
3721 * Removes the controller from the rescan queue if present. Blocks if
3722 * the controller is currently conducting a rescan. The controller
3723 * can be in one of three states:
3724 * 1. Doesn't need a scan
3725 * 2. On the scan list, but not scanning yet (we remove it)
3726 * 3. Busy scanning (and not on the list). In this case we want to wait for
3727 * the scan to complete to make sure the scanning thread for this
3728 * controller is completely idle.
3730 static void remove_from_scan_list(struct ctlr_info
*h
)
3732 struct ctlr_info
*test_h
, *tmp_h
;
3734 mutex_lock(&scan_mutex
);
3735 list_for_each_entry_safe(test_h
, tmp_h
, &scan_q
, scan_list
) {
3736 if (test_h
== h
) { /* state 2. */
3737 list_del(&h
->scan_list
);
3738 complete_all(&h
->scan_wait
);
3739 mutex_unlock(&scan_mutex
);
3743 if (h
->busy_scanning
) { /* state 3. */
3744 mutex_unlock(&scan_mutex
);
3745 wait_for_completion(&h
->scan_wait
);
3746 } else { /* state 1, nothing to do. */
3747 mutex_unlock(&scan_mutex
);
3752 * scan_thread() - kernel thread used to rescan controllers
3755 * A kernel thread used scan for drive topology changes on
3756 * controllers. The thread processes only one controller at a time
3757 * using a queue. Controllers are added to the queue using
3758 * add_to_scan_list() and removed from the queue either after done
3759 * processing or using remove_from_scan_list().
3763 static int scan_thread(void *data
)
3765 struct ctlr_info
*h
;
3768 set_current_state(TASK_INTERRUPTIBLE
);
3770 if (kthread_should_stop())
3774 mutex_lock(&scan_mutex
);
3775 if (list_empty(&scan_q
)) {
3776 mutex_unlock(&scan_mutex
);
3780 h
= list_entry(scan_q
.next
,
3783 list_del(&h
->scan_list
);
3784 h
->busy_scanning
= 1;
3785 mutex_unlock(&scan_mutex
);
3787 rebuild_lun_table(h
, 0, 0);
3788 complete_all(&h
->scan_wait
);
3789 mutex_lock(&scan_mutex
);
3790 h
->busy_scanning
= 0;
3791 mutex_unlock(&scan_mutex
);
3798 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
3800 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
3803 switch (c
->err_info
->SenseInfo
[12]) {
3805 dev_warn(&h
->pdev
->dev
, "a state change "
3806 "detected, command retried\n");
3810 dev_warn(&h
->pdev
->dev
, "LUN failure "
3811 "detected, action required\n");
3814 case REPORT_LUNS_CHANGED
:
3815 dev_warn(&h
->pdev
->dev
, "report LUN data changed\n");
3817 * Here, we could call add_to_scan_list and wake up the scan thread,
3818 * except that it's quite likely that we will get more than one
3819 * REPORT_LUNS_CHANGED condition in quick succession, which means
3820 * that those which occur after the first one will likely happen
3821 * *during* the scan_thread's rescan. And the rescan code is not
3822 * robust enough to restart in the middle, undoing what it has already
3823 * done, and it's not clear that it's even possible to do this, since
3824 * part of what it does is notify the block layer, which starts
3825 * doing it's own i/o to read partition tables and so on, and the
3826 * driver doesn't have visibility to know what might need undoing.
3827 * In any event, if possible, it is horribly complicated to get right
3828 * so we just don't do it for now.
3830 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
3834 case POWER_OR_RESET
:
3835 dev_warn(&h
->pdev
->dev
,
3836 "a power on or device reset detected\n");
3839 case UNIT_ATTENTION_CLEARED
:
3840 dev_warn(&h
->pdev
->dev
,
3841 "unit attention cleared by another initiator\n");
3845 dev_warn(&h
->pdev
->dev
, "unknown unit attention detected\n");
3851 * We cannot read the structure directly, for portability we must use
3853 * This is for debug only.
3855 static void print_cfg_table(ctlr_info_t
*h
)
3859 CfgTable_struct
*tb
= h
->cfgtable
;
3861 dev_dbg(&h
->pdev
->dev
, "Controller Configuration information\n");
3862 dev_dbg(&h
->pdev
->dev
, "------------------------------------\n");
3863 for (i
= 0; i
< 4; i
++)
3864 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3865 temp_name
[4] = '\0';
3866 dev_dbg(&h
->pdev
->dev
, " Signature = %s\n", temp_name
);
3867 dev_dbg(&h
->pdev
->dev
, " Spec Number = %d\n",
3868 readl(&(tb
->SpecValence
)));
3869 dev_dbg(&h
->pdev
->dev
, " Transport methods supported = 0x%x\n",
3870 readl(&(tb
->TransportSupport
)));
3871 dev_dbg(&h
->pdev
->dev
, " Transport methods active = 0x%x\n",
3872 readl(&(tb
->TransportActive
)));
3873 dev_dbg(&h
->pdev
->dev
, " Requested transport Method = 0x%x\n",
3874 readl(&(tb
->HostWrite
.TransportRequest
)));
3875 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Delay = 0x%x\n",
3876 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3877 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Count = 0x%x\n",
3878 readl(&(tb
->HostWrite
.CoalIntCount
)));
3879 dev_dbg(&h
->pdev
->dev
, " Max outstanding commands = 0x%x\n",
3880 readl(&(tb
->CmdsOutMax
)));
3881 dev_dbg(&h
->pdev
->dev
, " Bus Types = 0x%x\n",
3882 readl(&(tb
->BusTypes
)));
3883 for (i
= 0; i
< 16; i
++)
3884 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3885 temp_name
[16] = '\0';
3886 dev_dbg(&h
->pdev
->dev
, " Server Name = %s\n", temp_name
);
3887 dev_dbg(&h
->pdev
->dev
, " Heartbeat Counter = 0x%x\n\n\n",
3888 readl(&(tb
->HeartBeat
)));
3891 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3893 int i
, offset
, mem_type
, bar_type
;
3894 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3897 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3898 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3899 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3902 mem_type
= pci_resource_flags(pdev
, i
) &
3903 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3905 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3906 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3907 offset
+= 4; /* 32 bit */
3909 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3912 default: /* reserved in PCI 2.2 */
3913 dev_warn(&pdev
->dev
,
3914 "Base address is invalid\n");
3919 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3925 /* Fill in bucket_map[], given nsgs (the max number of
3926 * scatter gather elements supported) and bucket[],
3927 * which is an array of 8 integers. The bucket[] array
3928 * contains 8 different DMA transfer sizes (in 16
3929 * byte increments) which the controller uses to fetch
3930 * commands. This function fills in bucket_map[], which
3931 * maps a given number of scatter gather elements to one of
3932 * the 8 DMA transfer sizes. The point of it is to allow the
3933 * controller to only do as much DMA as needed to fetch the
3934 * command, with the DMA transfer size encoded in the lower
3935 * bits of the command address.
3937 static void calc_bucket_map(int bucket
[], int num_buckets
,
3938 int nsgs
, int *bucket_map
)
3942 /* even a command with 0 SGs requires 4 blocks */
3943 #define MINIMUM_TRANSFER_BLOCKS 4
3944 #define NUM_BUCKETS 8
3945 /* Note, bucket_map must have nsgs+1 entries. */
3946 for (i
= 0; i
<= nsgs
; i
++) {
3947 /* Compute size of a command with i SG entries */
3948 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
3949 b
= num_buckets
; /* Assume the biggest bucket */
3950 /* Find the bucket that is just big enough */
3951 for (j
= 0; j
< 8; j
++) {
3952 if (bucket
[j
] >= size
) {
3957 /* for a command with i SG entries, use bucket b. */
3962 static void cciss_wait_for_mode_change_ack(ctlr_info_t
*h
)
3966 /* under certain very rare conditions, this can take awhile.
3967 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3968 * as we enter this code.) */
3969 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3970 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
3972 usleep_range(10000, 20000);
3976 static void cciss_enter_performant_mode(ctlr_info_t
*h
, u32 use_short_tags
)
3978 /* This is a bit complicated. There are 8 registers on
3979 * the controller which we write to to tell it 8 different
3980 * sizes of commands which there may be. It's a way of
3981 * reducing the DMA done to fetch each command. Encoded into
3982 * each command's tag are 3 bits which communicate to the controller
3983 * which of the eight sizes that command fits within. The size of
3984 * each command depends on how many scatter gather entries there are.
3985 * Each SG entry requires 16 bytes. The eight registers are programmed
3986 * with the number of 16-byte blocks a command of that size requires.
3987 * The smallest command possible requires 5 such 16 byte blocks.
3988 * the largest command possible requires MAXSGENTRIES + 4 16-byte
3989 * blocks. Note, this only extends to the SG entries contained
3990 * within the command block, and does not extend to chained blocks
3991 * of SG elements. bft[] contains the eight values we write to
3992 * the registers. They are not evenly distributed, but have more
3993 * sizes for small commands, and fewer sizes for larger commands.
3996 int bft
[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES
+ 4};
3998 * 5 = 1 s/g entry or 4k
3999 * 6 = 2 s/g entry or 8k
4000 * 8 = 4 s/g entry or 16k
4001 * 10 = 6 s/g entry or 24k
4003 unsigned long register_value
;
4004 BUILD_BUG_ON(28 > MAXSGENTRIES
+ 4);
4006 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
4008 /* Controller spec: zero out this buffer. */
4009 memset(h
->reply_pool
, 0, h
->max_commands
* sizeof(__u64
));
4010 h
->reply_pool_head
= h
->reply_pool
;
4012 trans_offset
= readl(&(h
->cfgtable
->TransMethodOffset
));
4013 calc_bucket_map(bft
, ARRAY_SIZE(bft
), h
->maxsgentries
,
4014 h
->blockFetchTable
);
4015 writel(bft
[0], &h
->transtable
->BlockFetch0
);
4016 writel(bft
[1], &h
->transtable
->BlockFetch1
);
4017 writel(bft
[2], &h
->transtable
->BlockFetch2
);
4018 writel(bft
[3], &h
->transtable
->BlockFetch3
);
4019 writel(bft
[4], &h
->transtable
->BlockFetch4
);
4020 writel(bft
[5], &h
->transtable
->BlockFetch5
);
4021 writel(bft
[6], &h
->transtable
->BlockFetch6
);
4022 writel(bft
[7], &h
->transtable
->BlockFetch7
);
4024 /* size of controller ring buffer */
4025 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
4026 writel(1, &h
->transtable
->RepQCount
);
4027 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
4028 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
4029 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
4030 writel(0, &h
->transtable
->RepQAddr0High32
);
4031 writel(CFGTBL_Trans_Performant
| use_short_tags
,
4032 &(h
->cfgtable
->HostWrite
.TransportRequest
));
4034 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
4035 cciss_wait_for_mode_change_ack(h
);
4036 register_value
= readl(&(h
->cfgtable
->TransportActive
));
4037 if (!(register_value
& CFGTBL_Trans_Performant
))
4038 dev_warn(&h
->pdev
->dev
, "cciss: unable to get board into"
4039 " performant mode\n");
4042 static void cciss_put_controller_into_performant_mode(ctlr_info_t
*h
)
4044 __u32 trans_support
;
4046 if (cciss_simple_mode
)
4049 dev_dbg(&h
->pdev
->dev
, "Trying to put board into Performant mode\n");
4050 /* Attempt to put controller into performant mode if supported */
4051 /* Does board support performant mode? */
4052 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
4053 if (!(trans_support
& PERFORMANT_MODE
))
4056 dev_dbg(&h
->pdev
->dev
, "Placing controller into performant mode\n");
4057 /* Performant mode demands commands on a 32 byte boundary
4058 * pci_alloc_consistent aligns on page boundarys already.
4059 * Just need to check if divisible by 32
4061 if ((sizeof(CommandList_struct
) % 32) != 0) {
4062 dev_warn(&h
->pdev
->dev
, "%s %d %s\n",
4063 "cciss info: command size[",
4064 (int)sizeof(CommandList_struct
),
4065 "] not divisible by 32, no performant mode..\n");
4069 /* Performant mode ring buffer and supporting data structures */
4070 h
->reply_pool
= (__u64
*)pci_alloc_consistent(
4071 h
->pdev
, h
->max_commands
* sizeof(__u64
),
4072 &(h
->reply_pool_dhandle
));
4074 /* Need a block fetch table for performant mode */
4075 h
->blockFetchTable
= kmalloc(((h
->maxsgentries
+1) *
4076 sizeof(__u32
)), GFP_KERNEL
);
4078 if ((h
->reply_pool
== NULL
) || (h
->blockFetchTable
== NULL
))
4081 cciss_enter_performant_mode(h
,
4082 trans_support
& CFGTBL_Trans_use_short_tags
);
4084 /* Change the access methods to the performant access methods */
4085 h
->access
= SA5_performant_access
;
4086 h
->transMethod
= CFGTBL_Trans_Performant
;
4090 kfree(h
->blockFetchTable
);
4092 pci_free_consistent(h
->pdev
,
4093 h
->max_commands
* sizeof(__u64
),
4095 h
->reply_pool_dhandle
);
4098 } /* cciss_put_controller_into_performant_mode */
4100 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
4101 * controllers that are capable. If not, we use IO-APIC mode.
4104 static void cciss_interrupt_mode(ctlr_info_t
*h
)
4108 /* Some boards advertise MSI but don't really support it */
4109 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
4110 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
4111 goto default_int_mode
;
4113 ret
= pci_alloc_irq_vectors(h
->pdev
, 4, 4, PCI_IRQ_MSIX
);
4115 h
->intr
[0] = pci_irq_vector(h
->pdev
, 0);
4116 h
->intr
[1] = pci_irq_vector(h
->pdev
, 1);
4117 h
->intr
[2] = pci_irq_vector(h
->pdev
, 2);
4118 h
->intr
[3] = pci_irq_vector(h
->pdev
, 3);
4122 ret
= pci_alloc_irq_vectors(h
->pdev
, 1, 1, PCI_IRQ_MSI
);
4125 /* if we get here we're going to use the default interrupt mode */
4126 h
->intr
[h
->intr_mode
] = pci_irq_vector(h
->pdev
, 0);
4130 static int cciss_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
4133 u32 subsystem_vendor_id
, subsystem_device_id
;
4135 subsystem_vendor_id
= pdev
->subsystem_vendor
;
4136 subsystem_device_id
= pdev
->subsystem_device
;
4137 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
4138 subsystem_vendor_id
;
4140 for (i
= 0; i
< ARRAY_SIZE(products
); i
++) {
4141 /* Stand aside for hpsa driver on request */
4142 if (cciss_allow_hpsa
)
4144 if (*board_id
== products
[i
].board_id
)
4147 dev_warn(&pdev
->dev
, "unrecognized board ID: 0x%08x, ignoring.\n",
4152 static inline bool cciss_board_disabled(ctlr_info_t
*h
)
4156 (void) pci_read_config_word(h
->pdev
, PCI_COMMAND
, &command
);
4157 return ((command
& PCI_COMMAND_MEMORY
) == 0);
4160 static int cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
4161 unsigned long *memory_bar
)
4165 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
4166 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
4167 /* addressing mode bits already removed */
4168 *memory_bar
= pci_resource_start(pdev
, i
);
4169 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
4173 dev_warn(&pdev
->dev
, "no memory BAR found\n");
4177 static int cciss_wait_for_board_state(struct pci_dev
*pdev
,
4178 void __iomem
*vaddr
, int wait_for_ready
)
4179 #define BOARD_READY 1
4180 #define BOARD_NOT_READY 0
4186 iterations
= CCISS_BOARD_READY_ITERATIONS
;
4188 iterations
= CCISS_BOARD_NOT_READY_ITERATIONS
;
4190 for (i
= 0; i
< iterations
; i
++) {
4191 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
4192 if (wait_for_ready
) {
4193 if (scratchpad
== CCISS_FIRMWARE_READY
)
4196 if (scratchpad
!= CCISS_FIRMWARE_READY
)
4199 msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS
);
4201 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
4205 static int cciss_find_cfg_addrs(struct pci_dev
*pdev
, void __iomem
*vaddr
,
4206 u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
4209 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
4210 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
4211 *cfg_base_addr
&= (u32
) 0x0000ffff;
4212 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
4213 if (*cfg_base_addr_index
== -1) {
4214 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index, "
4215 "*cfg_base_addr = 0x%08x\n", *cfg_base_addr
);
4221 static int cciss_find_cfgtables(ctlr_info_t
*h
)
4225 u64 cfg_base_addr_index
;
4229 rc
= cciss_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
4230 &cfg_base_addr_index
, &cfg_offset
);
4233 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4234 cfg_base_addr_index
) + cfg_offset
, sizeof(*h
->cfgtable
));
4237 rc
= write_driver_ver_to_cfgtable(h
->cfgtable
);
4240 /* Find performant mode table. */
4241 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
4242 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4243 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
4244 sizeof(*h
->transtable
));
4250 static void cciss_get_max_perf_mode_cmds(struct ctlr_info
*h
)
4252 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
4254 /* Limit commands in memory limited kdump scenario. */
4255 if (reset_devices
&& h
->max_commands
> 32)
4256 h
->max_commands
= 32;
4258 if (h
->max_commands
< 16) {
4259 dev_warn(&h
->pdev
->dev
, "Controller reports "
4260 "max supported commands of %d, an obvious lie. "
4261 "Using 16. Ensure that firmware is up to date.\n",
4263 h
->max_commands
= 16;
4267 /* Interrogate the hardware for some limits:
4268 * max commands, max SG elements without chaining, and with chaining,
4269 * SG chain block size, etc.
4271 static void cciss_find_board_params(ctlr_info_t
*h
)
4273 cciss_get_max_perf_mode_cmds(h
);
4274 h
->nr_cmds
= h
->max_commands
- 4 - cciss_tape_cmds
;
4275 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxSGElements
));
4277 * The P600 may exhibit poor performnace under some workloads
4278 * if we use the value in the configuration table. Limit this
4279 * controller to MAXSGENTRIES (32) instead.
4281 if (h
->board_id
== 0x3225103C)
4282 h
->maxsgentries
= MAXSGENTRIES
;
4284 * Limit in-command s/g elements to 32 save dma'able memory.
4285 * Howvever spec says if 0, use 31
4287 h
->max_cmd_sgentries
= 31;
4288 if (h
->maxsgentries
> 512) {
4289 h
->max_cmd_sgentries
= 32;
4290 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sgentries
+ 1;
4291 h
->maxsgentries
--; /* save one for chain pointer */
4293 h
->maxsgentries
= 31; /* default to traditional values */
4298 static inline bool CISS_signature_present(ctlr_info_t
*h
)
4300 if (!check_signature(h
->cfgtable
->Signature
, "CISS", 4)) {
4301 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
4307 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
4308 static inline void cciss_enable_scsi_prefetch(ctlr_info_t
*h
)
4313 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
4315 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
4319 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
4320 * in a prefetch beyond physical memory.
4322 static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t
*h
)
4327 if (h
->board_id
!= 0x3225103C)
4329 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
4330 dma_prefetch
|= 0x8000;
4331 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
4332 pci_read_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, &dma_refetch
);
4334 pci_write_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, dma_refetch
);
4337 static int cciss_pci_init(ctlr_info_t
*h
)
4339 int prod_index
, err
;
4341 prod_index
= cciss_lookup_board_id(h
->pdev
, &h
->board_id
);
4344 h
->product_name
= products
[prod_index
].product_name
;
4345 h
->access
= *(products
[prod_index
].access
);
4347 if (cciss_board_disabled(h
)) {
4348 dev_warn(&h
->pdev
->dev
, "controller appears to be disabled\n");
4352 pci_disable_link_state(h
->pdev
, PCIE_LINK_STATE_L0S
|
4353 PCIE_LINK_STATE_L1
| PCIE_LINK_STATE_CLKPM
);
4355 err
= pci_enable_device(h
->pdev
);
4357 dev_warn(&h
->pdev
->dev
, "Unable to Enable PCI device\n");
4361 err
= pci_request_regions(h
->pdev
, "cciss");
4363 dev_warn(&h
->pdev
->dev
,
4364 "Cannot obtain PCI resources, aborting\n");
4368 dev_dbg(&h
->pdev
->dev
, "irq = %x\n", h
->pdev
->irq
);
4369 dev_dbg(&h
->pdev
->dev
, "board_id = %x\n", h
->board_id
);
4371 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
4372 * else we use the IO-APIC interrupt assigned to us by system ROM.
4374 cciss_interrupt_mode(h
);
4375 err
= cciss_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
4377 goto err_out_free_res
;
4378 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
4381 goto err_out_free_res
;
4383 err
= cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
4385 goto err_out_free_res
;
4386 err
= cciss_find_cfgtables(h
);
4388 goto err_out_free_res
;
4390 cciss_find_board_params(h
);
4392 if (!CISS_signature_present(h
)) {
4394 goto err_out_free_res
;
4396 cciss_enable_scsi_prefetch(h
);
4397 cciss_p600_dma_prefetch_quirk(h
);
4398 err
= cciss_enter_simple_mode(h
);
4400 goto err_out_free_res
;
4401 cciss_put_controller_into_performant_mode(h
);
4406 * Deliberately omit pci_disable_device(): it does something nasty to
4407 * Smart Array controllers that pci_enable_device does not undo
4410 iounmap(h
->transtable
);
4412 iounmap(h
->cfgtable
);
4415 pci_release_regions(h
->pdev
);
4419 /* Function to find the first free pointer into our hba[] array
4420 * Returns -1 if no free entries are left.
4422 static int alloc_cciss_hba(struct pci_dev
*pdev
)
4426 for (i
= 0; i
< MAX_CTLR
; i
++) {
4430 h
= kzalloc(sizeof(ctlr_info_t
), GFP_KERNEL
);
4437 dev_warn(&pdev
->dev
, "This driver supports a maximum"
4438 " of %d controllers.\n", MAX_CTLR
);
4441 dev_warn(&pdev
->dev
, "out of memory.\n");
4445 static void free_hba(ctlr_info_t
*h
)
4449 hba
[h
->ctlr
] = NULL
;
4450 for (i
= 0; i
< h
->highest_lun
+ 1; i
++)
4451 if (h
->gendisk
[i
] != NULL
)
4452 put_disk(h
->gendisk
[i
]);
4456 /* Send a message CDB to the firmware. */
4457 static int cciss_message(struct pci_dev
*pdev
, unsigned char opcode
,
4461 CommandListHeader_struct CommandHeader
;
4462 RequestBlock_struct Request
;
4463 ErrDescriptor_struct ErrorDescriptor
;
4465 static const size_t cmd_sz
= sizeof(Command
) + sizeof(ErrorInfo_struct
);
4468 uint32_t paddr32
, tag
;
4469 void __iomem
*vaddr
;
4472 vaddr
= ioremap_nocache(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
4476 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
4477 CCISS commands, so they must be allocated from the lower 4GiB of
4479 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4485 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
4491 /* This must fit, because of the 32-bit consistent DMA mask. Also,
4492 although there's no guarantee, we assume that the address is at
4493 least 4-byte aligned (most likely, it's page-aligned). */
4496 cmd
->CommandHeader
.ReplyQueue
= 0;
4497 cmd
->CommandHeader
.SGList
= 0;
4498 cmd
->CommandHeader
.SGTotal
= 0;
4499 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
4500 cmd
->CommandHeader
.Tag
.upper
= 0;
4501 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
4503 cmd
->Request
.CDBLen
= 16;
4504 cmd
->Request
.Type
.Type
= TYPE_MSG
;
4505 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
4506 cmd
->Request
.Type
.Direction
= XFER_NONE
;
4507 cmd
->Request
.Timeout
= 0; /* Don't time out */
4508 cmd
->Request
.CDB
[0] = opcode
;
4509 cmd
->Request
.CDB
[1] = type
;
4510 memset(&cmd
->Request
.CDB
[2], 0, 14); /* the rest of the CDB is reserved */
4512 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(Command
);
4513 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
4514 cmd
->ErrorDescriptor
.Len
= sizeof(ErrorInfo_struct
);
4516 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
4518 for (i
= 0; i
< 10; i
++) {
4519 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
4520 if ((tag
& ~3) == paddr32
)
4522 msleep(CCISS_POST_RESET_NOOP_TIMEOUT_MSECS
);
4527 /* we leak the DMA buffer here ... no choice since the controller could
4528 still complete the command. */
4531 "controller message %02x:%02x timed out\n",
4536 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
4539 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
4544 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
4549 #define cciss_noop(p) cciss_message(p, 3, 0)
4551 static int cciss_controller_hard_reset(struct pci_dev
*pdev
,
4552 void * __iomem vaddr
, u32 use_doorbell
)
4558 /* For everything after the P600, the PCI power state method
4559 * of resetting the controller doesn't work, so we have this
4560 * other way using the doorbell register.
4562 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
4563 writel(use_doorbell
, vaddr
+ SA5_DOORBELL
);
4564 } else { /* Try to do it the PCI power state way */
4566 /* Quoting from the Open CISS Specification: "The Power
4567 * Management Control/Status Register (CSR) controls the power
4568 * state of the device. The normal operating state is D0,
4569 * CSR=00h. The software off state is D3, CSR=03h. To reset
4570 * the controller, place the interface device in D3 then to D0,
4571 * this causes a secondary PCI reset which will reset the
4574 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
4577 "cciss_controller_hard_reset: "
4578 "PCI PM not supported\n");
4581 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
4582 /* enter the D3hot power management state */
4583 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
4584 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4586 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4590 /* enter the D0 power management state */
4591 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4593 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4596 * The P600 requires a small delay when changing states.
4597 * Otherwise we may think the board did not reset and we bail.
4598 * This for kdump only and is particular to the P600.
4605 static void init_driver_version(char *driver_version
, int len
)
4607 memset(driver_version
, 0, len
);
4608 strncpy(driver_version
, "cciss " DRIVER_NAME
, len
- 1);
4611 static int write_driver_ver_to_cfgtable(CfgTable_struct __iomem
*cfgtable
)
4613 char *driver_version
;
4614 int i
, size
= sizeof(cfgtable
->driver_version
);
4616 driver_version
= kmalloc(size
, GFP_KERNEL
);
4617 if (!driver_version
)
4620 init_driver_version(driver_version
, size
);
4621 for (i
= 0; i
< size
; i
++)
4622 writeb(driver_version
[i
], &cfgtable
->driver_version
[i
]);
4623 kfree(driver_version
);
4627 static void read_driver_ver_from_cfgtable(CfgTable_struct __iomem
*cfgtable
,
4628 unsigned char *driver_ver
)
4632 for (i
= 0; i
< sizeof(cfgtable
->driver_version
); i
++)
4633 driver_ver
[i
] = readb(&cfgtable
->driver_version
[i
]);
4636 static int controller_reset_failed(CfgTable_struct __iomem
*cfgtable
)
4639 char *driver_ver
, *old_driver_ver
;
4640 int rc
, size
= sizeof(cfgtable
->driver_version
);
4642 old_driver_ver
= kmalloc(2 * size
, GFP_KERNEL
);
4643 if (!old_driver_ver
)
4645 driver_ver
= old_driver_ver
+ size
;
4647 /* After a reset, the 32 bytes of "driver version" in the cfgtable
4648 * should have been changed, otherwise we know the reset failed.
4650 init_driver_version(old_driver_ver
, size
);
4651 read_driver_ver_from_cfgtable(cfgtable
, driver_ver
);
4652 rc
= !memcmp(driver_ver
, old_driver_ver
, size
);
4653 kfree(old_driver_ver
);
4657 /* This does a hard reset of the controller using PCI power management
4658 * states or using the doorbell register. */
4659 static int cciss_kdump_hard_reset_controller(struct pci_dev
*pdev
)
4663 u64 cfg_base_addr_index
;
4664 void __iomem
*vaddr
;
4665 unsigned long paddr
;
4666 u32 misc_fw_support
;
4668 CfgTable_struct __iomem
*cfgtable
;
4671 u16 command_register
;
4673 /* For controllers as old a the p600, this is very nearly
4676 * pci_save_state(pci_dev);
4677 * pci_set_power_state(pci_dev, PCI_D3hot);
4678 * pci_set_power_state(pci_dev, PCI_D0);
4679 * pci_restore_state(pci_dev);
4681 * For controllers newer than the P600, the pci power state
4682 * method of resetting doesn't work so we have another way
4683 * using the doorbell register.
4686 /* Exclude 640x boards. These are two pci devices in one slot
4687 * which share a battery backed cache module. One controls the
4688 * cache, the other accesses the cache through the one that controls
4689 * it. If we reset the one controlling the cache, the other will
4690 * likely not be happy. Just forbid resetting this conjoined mess.
4692 cciss_lookup_board_id(pdev
, &board_id
);
4693 if (!ctlr_is_resettable(board_id
)) {
4694 dev_warn(&pdev
->dev
, "Controller not resettable\n");
4698 /* if controller is soft- but not hard resettable... */
4699 if (!ctlr_is_hard_resettable(board_id
))
4700 return -ENOTSUPP
; /* try soft reset later. */
4702 /* Save the PCI command register */
4703 pci_read_config_word(pdev
, 4, &command_register
);
4704 /* Turn the board off. This is so that later pci_restore_state()
4705 * won't turn the board on before the rest of config space is ready.
4707 pci_disable_device(pdev
);
4708 pci_save_state(pdev
);
4710 /* find the first memory BAR, so we can find the cfg table */
4711 rc
= cciss_pci_find_memory_BAR(pdev
, &paddr
);
4714 vaddr
= remap_pci_mem(paddr
, 0x250);
4718 /* find cfgtable in order to check if reset via doorbell is supported */
4719 rc
= cciss_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
4720 &cfg_base_addr_index
, &cfg_offset
);
4723 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
4724 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
4729 rc
= write_driver_ver_to_cfgtable(cfgtable
);
4733 /* If reset via doorbell register is supported, use that.
4734 * There are two such methods. Favor the newest method.
4736 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
4737 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET2
;
4739 use_doorbell
= DOORBELL_CTLR_RESET2
;
4741 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
4743 dev_warn(&pdev
->dev
, "Controller claims that "
4744 "'Bit 2 doorbell reset' is "
4745 "supported, but not 'bit 5 doorbell reset'. "
4746 "Firmware update is recommended.\n");
4747 rc
= -ENOTSUPP
; /* use the soft reset */
4748 goto unmap_cfgtable
;
4752 rc
= cciss_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
4754 goto unmap_cfgtable
;
4755 pci_restore_state(pdev
);
4756 rc
= pci_enable_device(pdev
);
4758 dev_warn(&pdev
->dev
, "failed to enable device.\n");
4759 goto unmap_cfgtable
;
4761 pci_write_config_word(pdev
, 4, command_register
);
4763 /* Some devices (notably the HP Smart Array 5i Controller)
4764 need a little pause here */
4765 msleep(CCISS_POST_RESET_PAUSE_MSECS
);
4767 /* Wait for board to become not ready, then ready. */
4768 dev_info(&pdev
->dev
, "Waiting for board to reset.\n");
4769 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
4771 dev_warn(&pdev
->dev
, "Failed waiting for board to hard reset."
4772 " Will try soft reset.\n");
4773 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4774 goto unmap_cfgtable
;
4776 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
4778 dev_warn(&pdev
->dev
,
4779 "failed waiting for board to become ready "
4780 "after hard reset\n");
4781 goto unmap_cfgtable
;
4784 rc
= controller_reset_failed(vaddr
);
4786 goto unmap_cfgtable
;
4788 dev_warn(&pdev
->dev
, "Unable to successfully hard reset "
4789 "controller. Will try soft reset.\n");
4790 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4792 dev_info(&pdev
->dev
, "Board ready after hard reset.\n");
4803 static int cciss_init_reset_devices(struct pci_dev
*pdev
)
4810 /* Reset the controller with a PCI power-cycle or via doorbell */
4811 rc
= cciss_kdump_hard_reset_controller(pdev
);
4813 /* -ENOTSUPP here means we cannot reset the controller
4814 * but it's already (and still) up and running in
4815 * "performant mode". Or, it might be 640x, which can't reset
4816 * due to concerns about shared bbwc between 6402/6404 pair.
4818 if (rc
== -ENOTSUPP
)
4819 return rc
; /* just try to do the kdump anyhow. */
4823 /* Now try to get the controller to respond to a no-op */
4824 dev_warn(&pdev
->dev
, "Waiting for controller to respond to no-op\n");
4825 for (i
= 0; i
< CCISS_POST_RESET_NOOP_RETRIES
; i
++) {
4826 if (cciss_noop(pdev
) == 0)
4829 dev_warn(&pdev
->dev
, "no-op failed%s\n",
4830 (i
< CCISS_POST_RESET_NOOP_RETRIES
- 1 ?
4831 "; re-trying" : ""));
4832 msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS
);
4837 static int cciss_allocate_cmd_pool(ctlr_info_t
*h
)
4839 h
->cmd_pool_bits
= kmalloc(BITS_TO_LONGS(h
->nr_cmds
) *
4840 sizeof(unsigned long), GFP_KERNEL
);
4841 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
4842 h
->nr_cmds
* sizeof(CommandList_struct
),
4843 &(h
->cmd_pool_dhandle
));
4844 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
4845 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4846 &(h
->errinfo_pool_dhandle
));
4847 if ((h
->cmd_pool_bits
== NULL
)
4848 || (h
->cmd_pool
== NULL
)
4849 || (h
->errinfo_pool
== NULL
)) {
4850 dev_err(&h
->pdev
->dev
, "out of memory");
4856 static int cciss_allocate_scatterlists(ctlr_info_t
*h
)
4860 /* zero it, so that on free we need not know how many were alloc'ed */
4861 h
->scatter_list
= kzalloc(h
->max_commands
*
4862 sizeof(struct scatterlist
*), GFP_KERNEL
);
4863 if (!h
->scatter_list
)
4866 for (i
= 0; i
< h
->nr_cmds
; i
++) {
4867 h
->scatter_list
[i
] = kmalloc(sizeof(struct scatterlist
) *
4868 h
->maxsgentries
, GFP_KERNEL
);
4869 if (h
->scatter_list
[i
] == NULL
) {
4870 dev_err(&h
->pdev
->dev
, "could not allocate "
4878 static void cciss_free_scatterlists(ctlr_info_t
*h
)
4882 if (h
->scatter_list
) {
4883 for (i
= 0; i
< h
->nr_cmds
; i
++)
4884 kfree(h
->scatter_list
[i
]);
4885 kfree(h
->scatter_list
);
4889 static void cciss_free_cmd_pool(ctlr_info_t
*h
)
4891 kfree(h
->cmd_pool_bits
);
4893 pci_free_consistent(h
->pdev
,
4894 h
->nr_cmds
* sizeof(CommandList_struct
),
4895 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4896 if (h
->errinfo_pool
)
4897 pci_free_consistent(h
->pdev
,
4898 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4899 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4902 static int cciss_request_irq(ctlr_info_t
*h
,
4903 irqreturn_t (*msixhandler
)(int, void *),
4904 irqreturn_t (*intxhandler
)(int, void *))
4906 if (h
->pdev
->msi_enabled
|| h
->pdev
->msix_enabled
) {
4907 if (!request_irq(h
->intr
[h
->intr_mode
], msixhandler
,
4910 dev_err(&h
->pdev
->dev
, "Unable to get msi irq %d"
4911 " for %s\n", h
->intr
[h
->intr_mode
],
4916 if (!request_irq(h
->intr
[h
->intr_mode
], intxhandler
,
4917 IRQF_SHARED
, h
->devname
, h
))
4919 dev_err(&h
->pdev
->dev
, "Unable to get irq %d for %s\n",
4920 h
->intr
[h
->intr_mode
], h
->devname
);
4924 static int cciss_kdump_soft_reset(ctlr_info_t
*h
)
4926 if (cciss_send_reset(h
, CTLR_LUNID
, CCISS_RESET_TYPE_CONTROLLER
)) {
4927 dev_warn(&h
->pdev
->dev
, "Resetting array controller failed.\n");
4931 dev_info(&h
->pdev
->dev
, "Waiting for board to soft reset.\n");
4932 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_NOT_READY
)) {
4933 dev_warn(&h
->pdev
->dev
, "Soft reset had no effect.\n");
4937 dev_info(&h
->pdev
->dev
, "Board reset, awaiting READY status.\n");
4938 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
)) {
4939 dev_warn(&h
->pdev
->dev
, "Board failed to become ready "
4940 "after soft reset.\n");
4947 static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t
*h
)
4951 free_irq(h
->intr
[h
->intr_mode
], h
);
4952 pci_free_irq_vectors(h
->pdev
);
4953 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
4954 cciss_free_scatterlists(h
);
4955 cciss_free_cmd_pool(h
);
4956 kfree(h
->blockFetchTable
);
4958 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
4959 h
->reply_pool
, h
->reply_pool_dhandle
);
4961 iounmap(h
->transtable
);
4963 iounmap(h
->cfgtable
);
4966 unregister_blkdev(h
->major
, h
->devname
);
4967 cciss_destroy_hba_sysfs_entry(h
);
4968 pci_release_regions(h
->pdev
);
4974 * This is it. Find all the controllers and register them. I really hate
4975 * stealing all these major device numbers.
4976 * returns the number of block devices registered.
4978 static int cciss_init_one(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
4983 int try_soft_reset
= 0;
4984 int dac
, return_code
;
4985 InquiryData_struct
*inq_buff
;
4987 unsigned long flags
;
4990 * By default the cciss driver is used for all older HP Smart Array
4991 * controllers. There are module paramaters that allow a user to
4992 * override this behavior and instead use the hpsa SCSI driver. If
4993 * this is the case cciss may be loaded first from the kdump initrd
4994 * image and cause a kernel panic. So if reset_devices is true and
4995 * cciss_allow_hpsa is set just bail.
4997 if ((reset_devices
) && (cciss_allow_hpsa
== 1))
4999 rc
= cciss_init_reset_devices(pdev
);
5001 if (rc
!= -ENOTSUPP
)
5003 /* If the reset fails in a particular way (it has no way to do
5004 * a proper hard reset, so returns -ENOTSUPP) we can try to do
5005 * a soft reset once we get the controller configured up to the
5006 * point that it can accept a command.
5012 reinit_after_soft_reset
:
5014 i
= alloc_cciss_hba(pdev
);
5020 h
->busy_initializing
= 1;
5021 h
->intr_mode
= cciss_simple_mode
? SIMPLE_MODE_INT
: PERF_MODE_INT
;
5022 INIT_LIST_HEAD(&h
->cmpQ
);
5023 INIT_LIST_HEAD(&h
->reqQ
);
5024 mutex_init(&h
->busy_shutting_down
);
5026 if (cciss_pci_init(h
) != 0)
5027 goto clean_no_release_regions
;
5029 sprintf(h
->devname
, "cciss%d", i
);
5032 if (cciss_tape_cmds
< 2)
5033 cciss_tape_cmds
= 2;
5034 if (cciss_tape_cmds
> 16)
5035 cciss_tape_cmds
= 16;
5037 init_completion(&h
->scan_wait
);
5039 if (cciss_create_hba_sysfs_entry(h
))
5042 /* configure PCI DMA stuff */
5043 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)))
5045 else if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)))
5048 dev_err(&h
->pdev
->dev
, "no suitable DMA available\n");
5053 * register with the major number, or get a dynamic major number
5054 * by passing 0 as argument. This is done for greater than
5055 * 8 controller support.
5057 if (i
< MAX_CTLR_ORIG
)
5058 h
->major
= COMPAQ_CISS_MAJOR
+ i
;
5059 rc
= register_blkdev(h
->major
, h
->devname
);
5060 if (rc
== -EBUSY
|| rc
== -EINVAL
) {
5061 dev_err(&h
->pdev
->dev
,
5062 "Unable to get major number %d for %s "
5063 "on hba %d\n", h
->major
, h
->devname
, i
);
5066 if (i
>= MAX_CTLR_ORIG
)
5070 /* make sure the board interrupts are off */
5071 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5072 rc
= cciss_request_irq(h
, do_cciss_msix_intr
, do_cciss_intx
);
5076 dev_info(&h
->pdev
->dev
, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
5077 h
->devname
, pdev
->device
, pci_name(pdev
),
5078 h
->intr
[h
->intr_mode
], dac
? "" : " not");
5080 if (cciss_allocate_cmd_pool(h
))
5083 if (cciss_allocate_scatterlists(h
))
5086 h
->cmd_sg_list
= cciss_allocate_sg_chain_blocks(h
,
5087 h
->chainsize
, h
->nr_cmds
);
5088 if (!h
->cmd_sg_list
&& h
->chainsize
> 0)
5091 spin_lock_init(&h
->lock
);
5093 /* Initialize the pdev driver private data.
5094 have it point to h. */
5095 pci_set_drvdata(pdev
, h
);
5096 /* command and error info recs zeroed out before
5098 bitmap_zero(h
->cmd_pool_bits
, h
->nr_cmds
);
5101 h
->highest_lun
= -1;
5102 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
5104 h
->gendisk
[j
] = NULL
;
5107 /* At this point, the controller is ready to take commands.
5108 * Now, if reset_devices and the hard reset didn't work, try
5109 * the soft reset and see if that works.
5111 if (try_soft_reset
) {
5113 /* This is kind of gross. We may or may not get a completion
5114 * from the soft reset command, and if we do, then the value
5115 * from the fifo may or may not be valid. So, we wait 10 secs
5116 * after the reset throwing away any completions we get during
5117 * that time. Unregister the interrupt handler and register
5118 * fake ones to scoop up any residual completions.
5120 spin_lock_irqsave(&h
->lock
, flags
);
5121 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5122 spin_unlock_irqrestore(&h
->lock
, flags
);
5123 free_irq(h
->intr
[h
->intr_mode
], h
);
5124 rc
= cciss_request_irq(h
, cciss_msix_discard_completions
,
5125 cciss_intx_discard_completions
);
5127 dev_warn(&h
->pdev
->dev
, "Failed to request_irq after "
5132 rc
= cciss_kdump_soft_reset(h
);
5134 dev_warn(&h
->pdev
->dev
, "Soft reset failed.\n");
5138 dev_info(&h
->pdev
->dev
, "Board READY.\n");
5139 dev_info(&h
->pdev
->dev
,
5140 "Waiting for stale completions to drain.\n");
5141 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5143 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5145 rc
= controller_reset_failed(h
->cfgtable
);
5147 dev_info(&h
->pdev
->dev
,
5148 "Soft reset appears to have failed.\n");
5150 /* since the controller's reset, we have to go back and re-init
5151 * everything. Easiest to just forget what we've done and do it
5154 cciss_undo_allocations_after_kdump_soft_reset(h
);
5157 /* don't go to clean4, we already unallocated */
5160 goto reinit_after_soft_reset
;
5163 cciss_scsi_setup(h
);
5165 /* Turn the interrupts on so we can service requests */
5166 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5168 /* Get the firmware version */
5169 inq_buff
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
5170 if (inq_buff
== NULL
) {
5171 dev_err(&h
->pdev
->dev
, "out of memory\n");
5175 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
5176 sizeof(InquiryData_struct
), 0, CTLR_LUNID
, TYPE_CMD
);
5177 if (return_code
== IO_OK
) {
5178 h
->firm_ver
[0] = inq_buff
->data_byte
[32];
5179 h
->firm_ver
[1] = inq_buff
->data_byte
[33];
5180 h
->firm_ver
[2] = inq_buff
->data_byte
[34];
5181 h
->firm_ver
[3] = inq_buff
->data_byte
[35];
5182 } else { /* send command failed */
5183 dev_warn(&h
->pdev
->dev
, "unable to determine firmware"
5184 " version of controller\n");
5190 h
->cciss_max_sectors
= 8192;
5192 rebuild_lun_table(h
, 1, 0);
5193 cciss_engage_scsi(h
);
5194 h
->busy_initializing
= 0;
5198 cciss_free_cmd_pool(h
);
5199 cciss_free_scatterlists(h
);
5200 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5201 free_irq(h
->intr
[h
->intr_mode
], h
);
5203 unregister_blkdev(h
->major
, h
->devname
);
5205 cciss_destroy_hba_sysfs_entry(h
);
5207 pci_release_regions(pdev
);
5208 clean_no_release_regions
:
5209 h
->busy_initializing
= 0;
5212 * Deliberately omit pci_disable_device(): it does something nasty to
5213 * Smart Array controllers that pci_enable_device does not undo
5215 pci_set_drvdata(pdev
, NULL
);
5220 static void cciss_shutdown(struct pci_dev
*pdev
)
5226 h
= pci_get_drvdata(pdev
);
5227 flush_buf
= kzalloc(4, GFP_KERNEL
);
5229 dev_warn(&h
->pdev
->dev
, "cache not flushed, out of memory.\n");
5232 /* write all data in the battery backed cache to disk */
5233 return_code
= sendcmd_withirq(h
, CCISS_CACHE_FLUSH
, flush_buf
,
5234 4, 0, CTLR_LUNID
, TYPE_CMD
);
5236 if (return_code
!= IO_OK
)
5237 dev_warn(&h
->pdev
->dev
, "Error flushing cache\n");
5238 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5239 free_irq(h
->intr
[h
->intr_mode
], h
);
5242 static int cciss_enter_simple_mode(struct ctlr_info
*h
)
5246 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
5247 if (!(trans_support
& SIMPLE_MODE
))
5250 h
->max_commands
= readl(&(h
->cfgtable
->CmdsOutMax
));
5251 writel(CFGTBL_Trans_Simple
, &(h
->cfgtable
->HostWrite
.TransportRequest
));
5252 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
5253 cciss_wait_for_mode_change_ack(h
);
5255 if (!(readl(&(h
->cfgtable
->TransportActive
)) & CFGTBL_Trans_Simple
)) {
5256 dev_warn(&h
->pdev
->dev
, "unable to get board into simple mode\n");
5259 h
->transMethod
= CFGTBL_Trans_Simple
;
5264 static void cciss_remove_one(struct pci_dev
*pdev
)
5269 if (pci_get_drvdata(pdev
) == NULL
) {
5270 dev_err(&pdev
->dev
, "Unable to remove device\n");
5274 h
= pci_get_drvdata(pdev
);
5276 if (hba
[i
] == NULL
) {
5277 dev_err(&pdev
->dev
, "device appears to already be removed\n");
5281 mutex_lock(&h
->busy_shutting_down
);
5283 remove_from_scan_list(h
);
5284 remove_proc_entry(h
->devname
, proc_cciss
);
5285 unregister_blkdev(h
->major
, h
->devname
);
5287 /* remove it from the disk list */
5288 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
5289 struct gendisk
*disk
= h
->gendisk
[j
];
5291 struct request_queue
*q
= disk
->queue
;
5293 if (disk
->flags
& GENHD_FL_UP
) {
5294 cciss_destroy_ld_sysfs_entry(h
, j
, 1);
5298 blk_cleanup_queue(q
);
5302 #ifdef CONFIG_CISS_SCSI_TAPE
5303 cciss_unregister_scsi(h
); /* unhook from SCSI subsystem */
5306 cciss_shutdown(pdev
);
5308 pci_free_irq_vectors(h
->pdev
);
5310 iounmap(h
->transtable
);
5311 iounmap(h
->cfgtable
);
5314 cciss_free_cmd_pool(h
);
5315 /* Free up sg elements */
5316 for (j
= 0; j
< h
->nr_cmds
; j
++)
5317 kfree(h
->scatter_list
[j
]);
5318 kfree(h
->scatter_list
);
5319 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5320 kfree(h
->blockFetchTable
);
5322 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
5323 h
->reply_pool
, h
->reply_pool_dhandle
);
5325 * Deliberately omit pci_disable_device(): it does something nasty to
5326 * Smart Array controllers that pci_enable_device does not undo
5328 pci_release_regions(pdev
);
5329 pci_set_drvdata(pdev
, NULL
);
5330 cciss_destroy_hba_sysfs_entry(h
);
5331 mutex_unlock(&h
->busy_shutting_down
);
5335 static struct pci_driver cciss_pci_driver
= {
5337 .probe
= cciss_init_one
,
5338 .remove
= cciss_remove_one
,
5339 .id_table
= cciss_pci_device_id
, /* id_table */
5340 .shutdown
= cciss_shutdown
,
5344 * This is it. Register the PCI driver information for the cards we control
5345 * the OS will call our registered routines when it finds one of our cards.
5347 static int __init
cciss_init(void)
5352 * The hardware requires that commands are aligned on a 64-bit
5353 * boundary. Given that we use pci_alloc_consistent() to allocate an
5354 * array of them, the size must be a multiple of 8 bytes.
5356 BUILD_BUG_ON(sizeof(CommandList_struct
) % COMMANDLIST_ALIGNMENT
);
5357 printk(KERN_INFO DRIVER_NAME
"\n");
5359 err
= bus_register(&cciss_bus_type
);
5363 /* Start the scan thread */
5364 cciss_scan_thread
= kthread_run(scan_thread
, NULL
, "cciss_scan");
5365 if (IS_ERR(cciss_scan_thread
)) {
5366 err
= PTR_ERR(cciss_scan_thread
);
5367 goto err_bus_unregister
;
5370 /* Register for our PCI devices */
5371 err
= pci_register_driver(&cciss_pci_driver
);
5373 goto err_thread_stop
;
5378 kthread_stop(cciss_scan_thread
);
5380 bus_unregister(&cciss_bus_type
);
5385 static void __exit
cciss_cleanup(void)
5389 pci_unregister_driver(&cciss_pci_driver
);
5390 /* double check that all controller entrys have been removed */
5391 for (i
= 0; i
< MAX_CTLR
; i
++) {
5392 if (hba
[i
] != NULL
) {
5393 dev_warn(&hba
[i
]->pdev
->dev
,
5394 "had to remove controller\n");
5395 cciss_remove_one(hba
[i
]->pdev
);
5398 kthread_stop(cciss_scan_thread
);
5400 remove_proc_entry("driver/cciss", NULL
);
5401 bus_unregister(&cciss_bus_type
);
5404 module_init(cciss_init
);
5405 module_exit(cciss_cleanup
);