2 * Disk Array driver for HP Smart Array controllers.
3 * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
23 #include <linux/module.h>
24 #include <linux/interrupt.h>
25 #include <linux/types.h>
26 #include <linux/pci.h>
27 #include <linux/kernel.h>
28 #include <linux/slab.h>
29 #include <linux/delay.h>
30 #include <linux/major.h>
32 #include <linux/bio.h>
33 #include <linux/blkpg.h>
34 #include <linux/timer.h>
35 #include <linux/proc_fs.h>
36 #include <linux/seq_file.h>
37 #include <linux/init.h>
38 #include <linux/jiffies.h>
39 #include <linux/hdreg.h>
40 #include <linux/spinlock.h>
41 #include <linux/compat.h>
42 #include <linux/mutex.h>
43 #include <asm/uaccess.h>
46 #include <linux/dma-mapping.h>
47 #include <linux/blkdev.h>
48 #include <linux/genhd.h>
49 #include <linux/completion.h>
50 #include <scsi/scsi.h>
52 #include <scsi/scsi_ioctl.h>
53 #include <linux/cdrom.h>
54 #include <linux/scatterlist.h>
55 #include <linux/kthread.h>
57 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
58 #define DRIVER_NAME "HP CISS Driver (v 3.6.26)"
59 #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26)
61 /* Embedded module documentation macros - see modules.h */
62 MODULE_AUTHOR("Hewlett-Packard Company");
63 MODULE_DESCRIPTION("Driver for HP Smart Array Controllers");
64 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
65 MODULE_VERSION("3.6.26");
66 MODULE_LICENSE("GPL");
68 static DEFINE_MUTEX(cciss_mutex
);
70 #include "cciss_cmd.h"
72 #include <linux/cciss_ioctl.h>
74 /* define the PCI info for the cards we can control */
75 static const struct pci_device_id cciss_pci_device_id
[] = {
76 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISS
, 0x0E11, 0x4070},
77 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4080},
78 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4082},
79 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4083},
80 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x4091},
81 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409A},
82 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409B},
83 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409C},
84 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409D},
85 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSA
, 0x103C, 0x3225},
86 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3223},
87 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3234},
88 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3235},
89 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3211},
90 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3212},
91 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3213},
92 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3214},
93 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3215},
94 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3237},
95 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x323D},
99 MODULE_DEVICE_TABLE(pci
, cciss_pci_device_id
);
101 /* board_id = Subsystem Device ID & Vendor ID
102 * product = Marketing Name for the board
103 * access = Address of the struct of function pointers
105 static struct board_type products
[] = {
106 {0x40700E11, "Smart Array 5300", &SA5_access
},
107 {0x40800E11, "Smart Array 5i", &SA5B_access
},
108 {0x40820E11, "Smart Array 532", &SA5B_access
},
109 {0x40830E11, "Smart Array 5312", &SA5B_access
},
110 {0x409A0E11, "Smart Array 641", &SA5_access
},
111 {0x409B0E11, "Smart Array 642", &SA5_access
},
112 {0x409C0E11, "Smart Array 6400", &SA5_access
},
113 {0x409D0E11, "Smart Array 6400 EM", &SA5_access
},
114 {0x40910E11, "Smart Array 6i", &SA5_access
},
115 {0x3225103C, "Smart Array P600", &SA5_access
},
116 {0x3223103C, "Smart Array P800", &SA5_access
},
117 {0x3234103C, "Smart Array P400", &SA5_access
},
118 {0x3235103C, "Smart Array P400i", &SA5_access
},
119 {0x3211103C, "Smart Array E200i", &SA5_access
},
120 {0x3212103C, "Smart Array E200", &SA5_access
},
121 {0x3213103C, "Smart Array E200i", &SA5_access
},
122 {0x3214103C, "Smart Array E200i", &SA5_access
},
123 {0x3215103C, "Smart Array E200i", &SA5_access
},
124 {0x3237103C, "Smart Array E500", &SA5_access
},
125 {0x3223103C, "Smart Array P800", &SA5_access
},
126 {0x3234103C, "Smart Array P400", &SA5_access
},
127 {0x323D103C, "Smart Array P700m", &SA5_access
},
130 /* How long to wait (in milliseconds) for board to go into simple mode */
131 #define MAX_CONFIG_WAIT 30000
132 #define MAX_IOCTL_CONFIG_WAIT 1000
134 /*define how many times we will try a command because of bus resets */
135 #define MAX_CMD_RETRIES 3
139 /* Originally cciss driver only supports 8 major numbers */
140 #define MAX_CTLR_ORIG 8
142 static ctlr_info_t
*hba
[MAX_CTLR
];
144 static struct task_struct
*cciss_scan_thread
;
145 static DEFINE_MUTEX(scan_mutex
);
146 static LIST_HEAD(scan_q
);
148 static void do_cciss_request(struct request_queue
*q
);
149 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
);
150 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
);
151 static int cciss_open(struct block_device
*bdev
, fmode_t mode
);
152 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
);
153 static int cciss_release(struct gendisk
*disk
, fmode_t mode
);
154 static int do_ioctl(struct block_device
*bdev
, fmode_t mode
,
155 unsigned int cmd
, unsigned long arg
);
156 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
157 unsigned int cmd
, unsigned long arg
);
158 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
);
160 static int cciss_revalidate(struct gendisk
*disk
);
161 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
, int via_ioctl
);
162 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
163 int clear_all
, int via_ioctl
);
165 static void cciss_read_capacity(ctlr_info_t
*h
, int logvol
,
166 sector_t
*total_size
, unsigned int *block_size
);
167 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
168 sector_t
*total_size
, unsigned int *block_size
);
169 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
171 unsigned int block_size
, InquiryData_struct
*inq_buff
,
172 drive_info_struct
*drv
);
173 static void __devinit
cciss_interrupt_mode(ctlr_info_t
*);
174 static void start_io(ctlr_info_t
*h
);
175 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
176 __u8 page_code
, unsigned char scsi3addr
[],
178 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
180 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
);
182 static int add_to_scan_list(struct ctlr_info
*h
);
183 static int scan_thread(void *data
);
184 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
);
185 static void cciss_hba_release(struct device
*dev
);
186 static void cciss_device_release(struct device
*dev
);
187 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
);
188 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
);
189 static inline u32
next_command(ctlr_info_t
*h
);
190 static int __devinit
cciss_find_cfg_addrs(struct pci_dev
*pdev
,
191 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
193 static int __devinit
cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
194 unsigned long *memory_bar
);
197 /* performant mode helper functions */
198 static void calc_bucket_map(int *bucket
, int num_buckets
, int nsgs
,
200 static void cciss_put_controller_into_performant_mode(ctlr_info_t
*h
);
202 #ifdef CONFIG_PROC_FS
203 static void cciss_procinit(ctlr_info_t
*h
);
205 static void cciss_procinit(ctlr_info_t
*h
)
208 #endif /* CONFIG_PROC_FS */
211 static int cciss_compat_ioctl(struct block_device
*, fmode_t
,
212 unsigned, unsigned long);
215 static const struct block_device_operations cciss_fops
= {
216 .owner
= THIS_MODULE
,
217 .open
= cciss_unlocked_open
,
218 .release
= cciss_release
,
220 .getgeo
= cciss_getgeo
,
222 .compat_ioctl
= cciss_compat_ioctl
,
224 .revalidate_disk
= cciss_revalidate
,
227 /* set_performant_mode: Modify the tag for cciss performant
228 * set bit 0 for pull model, bits 3-1 for block fetch
231 static void set_performant_mode(ctlr_info_t
*h
, CommandList_struct
*c
)
233 if (likely(h
->transMethod
== CFGTBL_Trans_Performant
))
234 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
238 * Enqueuing and dequeuing functions for cmdlists.
240 static inline void addQ(struct hlist_head
*list
, CommandList_struct
*c
)
242 hlist_add_head(&c
->list
, list
);
245 static inline void removeQ(CommandList_struct
*c
)
248 * After kexec/dump some commands might still
249 * be in flight, which the firmware will try
250 * to complete. Resetting the firmware doesn't work
251 * with old fw revisions, so we have to mark
252 * them off as 'stale' to prevent the driver from
255 if (WARN_ON(hlist_unhashed(&c
->list
))) {
256 c
->cmd_type
= CMD_MSG_STALE
;
260 hlist_del_init(&c
->list
);
263 static void enqueue_cmd_and_start_io(ctlr_info_t
*h
,
264 CommandList_struct
*c
)
267 set_performant_mode(h
, c
);
268 spin_lock_irqsave(&h
->lock
, flags
);
271 if (h
->Qdepth
> h
->maxQsinceinit
)
272 h
->maxQsinceinit
= h
->Qdepth
;
274 spin_unlock_irqrestore(&h
->lock
, flags
);
277 static void cciss_free_sg_chain_blocks(SGDescriptor_struct
**cmd_sg_list
,
284 for (i
= 0; i
< nr_cmds
; i
++) {
285 kfree(cmd_sg_list
[i
]);
286 cmd_sg_list
[i
] = NULL
;
291 static SGDescriptor_struct
**cciss_allocate_sg_chain_blocks(
292 ctlr_info_t
*h
, int chainsize
, int nr_cmds
)
295 SGDescriptor_struct
**cmd_sg_list
;
300 cmd_sg_list
= kmalloc(sizeof(*cmd_sg_list
) * nr_cmds
, GFP_KERNEL
);
304 /* Build up chain blocks for each command */
305 for (j
= 0; j
< nr_cmds
; j
++) {
306 /* Need a block of chainsized s/g elements. */
307 cmd_sg_list
[j
] = kmalloc((chainsize
*
308 sizeof(*cmd_sg_list
[j
])), GFP_KERNEL
);
309 if (!cmd_sg_list
[j
]) {
310 dev_err(&h
->pdev
->dev
, "Cannot get memory "
311 "for s/g chains.\n");
317 cciss_free_sg_chain_blocks(cmd_sg_list
, nr_cmds
);
321 static void cciss_unmap_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
)
323 SGDescriptor_struct
*chain_sg
;
326 if (c
->Header
.SGTotal
<= h
->max_cmd_sgentries
)
329 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
330 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
331 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
332 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
335 static void cciss_map_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
,
336 SGDescriptor_struct
*chain_block
, int len
)
338 SGDescriptor_struct
*chain_sg
;
341 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
342 chain_sg
->Ext
= CCISS_SG_CHAIN
;
344 temp64
.val
= pci_map_single(h
->pdev
, chain_block
, len
,
346 chain_sg
->Addr
.lower
= temp64
.val32
.lower
;
347 chain_sg
->Addr
.upper
= temp64
.val32
.upper
;
350 #include "cciss_scsi.c" /* For SCSI tape support */
352 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
355 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1)
357 #ifdef CONFIG_PROC_FS
360 * Report information about this controller.
362 #define ENG_GIG 1000000000
363 #define ENG_GIG_FACTOR (ENG_GIG/512)
364 #define ENGAGE_SCSI "engage scsi"
366 static struct proc_dir_entry
*proc_cciss
;
368 static void cciss_seq_show_header(struct seq_file
*seq
)
370 ctlr_info_t
*h
= seq
->private;
372 seq_printf(seq
, "%s: HP %s Controller\n"
373 "Board ID: 0x%08lx\n"
374 "Firmware Version: %c%c%c%c\n"
376 "Logical drives: %d\n"
377 "Current Q depth: %d\n"
378 "Current # commands on controller: %d\n"
379 "Max Q depth since init: %d\n"
380 "Max # commands on controller since init: %d\n"
381 "Max SG entries since init: %d\n",
384 (unsigned long)h
->board_id
,
385 h
->firm_ver
[0], h
->firm_ver
[1], h
->firm_ver
[2],
386 h
->firm_ver
[3], (unsigned int)h
->intr
[PERF_MODE_INT
],
388 h
->Qdepth
, h
->commands_outstanding
,
389 h
->maxQsinceinit
, h
->max_outstanding
, h
->maxSG
);
391 #ifdef CONFIG_CISS_SCSI_TAPE
392 cciss_seq_tape_report(seq
, h
);
393 #endif /* CONFIG_CISS_SCSI_TAPE */
396 static void *cciss_seq_start(struct seq_file
*seq
, loff_t
*pos
)
398 ctlr_info_t
*h
= seq
->private;
401 /* prevent displaying bogus info during configuration
402 * or deconfiguration of a logical volume
404 spin_lock_irqsave(&h
->lock
, flags
);
405 if (h
->busy_configuring
) {
406 spin_unlock_irqrestore(&h
->lock
, flags
);
407 return ERR_PTR(-EBUSY
);
409 h
->busy_configuring
= 1;
410 spin_unlock_irqrestore(&h
->lock
, flags
);
413 cciss_seq_show_header(seq
);
418 static int cciss_seq_show(struct seq_file
*seq
, void *v
)
420 sector_t vol_sz
, vol_sz_frac
;
421 ctlr_info_t
*h
= seq
->private;
422 unsigned ctlr
= h
->ctlr
;
424 drive_info_struct
*drv
= h
->drv
[*pos
];
426 if (*pos
> h
->highest_lun
)
429 if (drv
== NULL
) /* it's possible for h->drv[] to have holes. */
435 vol_sz
= drv
->nr_blocks
;
436 vol_sz_frac
= sector_div(vol_sz
, ENG_GIG_FACTOR
);
438 sector_div(vol_sz_frac
, ENG_GIG_FACTOR
);
440 if (drv
->raid_level
< 0 || drv
->raid_level
> RAID_UNKNOWN
)
441 drv
->raid_level
= RAID_UNKNOWN
;
442 seq_printf(seq
, "cciss/c%dd%d:"
443 "\t%4u.%02uGB\tRAID %s\n",
444 ctlr
, (int) *pos
, (int)vol_sz
, (int)vol_sz_frac
,
445 raid_label
[drv
->raid_level
]);
449 static void *cciss_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
451 ctlr_info_t
*h
= seq
->private;
453 if (*pos
> h
->highest_lun
)
460 static void cciss_seq_stop(struct seq_file
*seq
, void *v
)
462 ctlr_info_t
*h
= seq
->private;
464 /* Only reset h->busy_configuring if we succeeded in setting
465 * it during cciss_seq_start. */
466 if (v
== ERR_PTR(-EBUSY
))
469 h
->busy_configuring
= 0;
472 static const struct seq_operations cciss_seq_ops
= {
473 .start
= cciss_seq_start
,
474 .show
= cciss_seq_show
,
475 .next
= cciss_seq_next
,
476 .stop
= cciss_seq_stop
,
479 static int cciss_seq_open(struct inode
*inode
, struct file
*file
)
481 int ret
= seq_open(file
, &cciss_seq_ops
);
482 struct seq_file
*seq
= file
->private_data
;
485 seq
->private = PDE(inode
)->data
;
491 cciss_proc_write(struct file
*file
, const char __user
*buf
,
492 size_t length
, loff_t
*ppos
)
497 #ifndef CONFIG_CISS_SCSI_TAPE
501 if (!buf
|| length
> PAGE_SIZE
- 1)
504 buffer
= (char *)__get_free_page(GFP_KERNEL
);
509 if (copy_from_user(buffer
, buf
, length
))
511 buffer
[length
] = '\0';
513 #ifdef CONFIG_CISS_SCSI_TAPE
514 if (strncmp(ENGAGE_SCSI
, buffer
, sizeof ENGAGE_SCSI
- 1) == 0) {
515 struct seq_file
*seq
= file
->private_data
;
516 ctlr_info_t
*h
= seq
->private;
518 err
= cciss_engage_scsi(h
);
522 #endif /* CONFIG_CISS_SCSI_TAPE */
524 /* might be nice to have "disengage" too, but it's not
525 safely possible. (only 1 module use count, lock issues.) */
528 free_page((unsigned long)buffer
);
532 static const struct file_operations cciss_proc_fops
= {
533 .owner
= THIS_MODULE
,
534 .open
= cciss_seq_open
,
537 .release
= seq_release
,
538 .write
= cciss_proc_write
,
541 static void __devinit
cciss_procinit(ctlr_info_t
*h
)
543 struct proc_dir_entry
*pde
;
545 if (proc_cciss
== NULL
)
546 proc_cciss
= proc_mkdir("driver/cciss", NULL
);
549 pde
= proc_create_data(h
->devname
, S_IWUSR
| S_IRUSR
| S_IRGRP
|
551 &cciss_proc_fops
, h
);
553 #endif /* CONFIG_PROC_FS */
555 #define MAX_PRODUCT_NAME_LEN 19
557 #define to_hba(n) container_of(n, struct ctlr_info, dev)
558 #define to_drv(n) container_of(n, drive_info_struct, dev)
560 static ssize_t
host_store_rescan(struct device
*dev
,
561 struct device_attribute
*attr
,
562 const char *buf
, size_t count
)
564 struct ctlr_info
*h
= to_hba(dev
);
567 wake_up_process(cciss_scan_thread
);
568 wait_for_completion_interruptible(&h
->scan_wait
);
572 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
574 static ssize_t
dev_show_unique_id(struct device
*dev
,
575 struct device_attribute
*attr
,
578 drive_info_struct
*drv
= to_drv(dev
);
579 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
584 spin_lock_irqsave(&h
->lock
, flags
);
585 if (h
->busy_configuring
)
588 memcpy(sn
, drv
->serial_no
, sizeof(sn
));
589 spin_unlock_irqrestore(&h
->lock
, flags
);
594 return snprintf(buf
, 16 * 2 + 2,
595 "%02X%02X%02X%02X%02X%02X%02X%02X"
596 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
597 sn
[0], sn
[1], sn
[2], sn
[3],
598 sn
[4], sn
[5], sn
[6], sn
[7],
599 sn
[8], sn
[9], sn
[10], sn
[11],
600 sn
[12], sn
[13], sn
[14], sn
[15]);
602 static DEVICE_ATTR(unique_id
, S_IRUGO
, dev_show_unique_id
, NULL
);
604 static ssize_t
dev_show_vendor(struct device
*dev
,
605 struct device_attribute
*attr
,
608 drive_info_struct
*drv
= to_drv(dev
);
609 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
610 char vendor
[VENDOR_LEN
+ 1];
614 spin_lock_irqsave(&h
->lock
, flags
);
615 if (h
->busy_configuring
)
618 memcpy(vendor
, drv
->vendor
, VENDOR_LEN
+ 1);
619 spin_unlock_irqrestore(&h
->lock
, flags
);
624 return snprintf(buf
, sizeof(vendor
) + 1, "%s\n", drv
->vendor
);
626 static DEVICE_ATTR(vendor
, S_IRUGO
, dev_show_vendor
, NULL
);
628 static ssize_t
dev_show_model(struct device
*dev
,
629 struct device_attribute
*attr
,
632 drive_info_struct
*drv
= to_drv(dev
);
633 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
634 char model
[MODEL_LEN
+ 1];
638 spin_lock_irqsave(&h
->lock
, flags
);
639 if (h
->busy_configuring
)
642 memcpy(model
, drv
->model
, MODEL_LEN
+ 1);
643 spin_unlock_irqrestore(&h
->lock
, flags
);
648 return snprintf(buf
, sizeof(model
) + 1, "%s\n", drv
->model
);
650 static DEVICE_ATTR(model
, S_IRUGO
, dev_show_model
, NULL
);
652 static ssize_t
dev_show_rev(struct device
*dev
,
653 struct device_attribute
*attr
,
656 drive_info_struct
*drv
= to_drv(dev
);
657 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
658 char rev
[REV_LEN
+ 1];
662 spin_lock_irqsave(&h
->lock
, flags
);
663 if (h
->busy_configuring
)
666 memcpy(rev
, drv
->rev
, REV_LEN
+ 1);
667 spin_unlock_irqrestore(&h
->lock
, flags
);
672 return snprintf(buf
, sizeof(rev
) + 1, "%s\n", drv
->rev
);
674 static DEVICE_ATTR(rev
, S_IRUGO
, dev_show_rev
, NULL
);
676 static ssize_t
cciss_show_lunid(struct device
*dev
,
677 struct device_attribute
*attr
, char *buf
)
679 drive_info_struct
*drv
= to_drv(dev
);
680 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
682 unsigned char lunid
[8];
684 spin_lock_irqsave(&h
->lock
, flags
);
685 if (h
->busy_configuring
) {
686 spin_unlock_irqrestore(&h
->lock
, flags
);
690 spin_unlock_irqrestore(&h
->lock
, flags
);
693 memcpy(lunid
, drv
->LunID
, sizeof(lunid
));
694 spin_unlock_irqrestore(&h
->lock
, flags
);
695 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
696 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
697 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
699 static DEVICE_ATTR(lunid
, S_IRUGO
, cciss_show_lunid
, NULL
);
701 static ssize_t
cciss_show_raid_level(struct device
*dev
,
702 struct device_attribute
*attr
, char *buf
)
704 drive_info_struct
*drv
= to_drv(dev
);
705 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
709 spin_lock_irqsave(&h
->lock
, flags
);
710 if (h
->busy_configuring
) {
711 spin_unlock_irqrestore(&h
->lock
, flags
);
714 raid
= drv
->raid_level
;
715 spin_unlock_irqrestore(&h
->lock
, flags
);
716 if (raid
< 0 || raid
> RAID_UNKNOWN
)
719 return snprintf(buf
, strlen(raid_label
[raid
]) + 7, "RAID %s\n",
722 static DEVICE_ATTR(raid_level
, S_IRUGO
, cciss_show_raid_level
, NULL
);
724 static ssize_t
cciss_show_usage_count(struct device
*dev
,
725 struct device_attribute
*attr
, char *buf
)
727 drive_info_struct
*drv
= to_drv(dev
);
728 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
732 spin_lock_irqsave(&h
->lock
, flags
);
733 if (h
->busy_configuring
) {
734 spin_unlock_irqrestore(&h
->lock
, flags
);
737 count
= drv
->usage_count
;
738 spin_unlock_irqrestore(&h
->lock
, flags
);
739 return snprintf(buf
, 20, "%d\n", count
);
741 static DEVICE_ATTR(usage_count
, S_IRUGO
, cciss_show_usage_count
, NULL
);
743 static struct attribute
*cciss_host_attrs
[] = {
744 &dev_attr_rescan
.attr
,
748 static struct attribute_group cciss_host_attr_group
= {
749 .attrs
= cciss_host_attrs
,
752 static const struct attribute_group
*cciss_host_attr_groups
[] = {
753 &cciss_host_attr_group
,
757 static struct device_type cciss_host_type
= {
758 .name
= "cciss_host",
759 .groups
= cciss_host_attr_groups
,
760 .release
= cciss_hba_release
,
763 static struct attribute
*cciss_dev_attrs
[] = {
764 &dev_attr_unique_id
.attr
,
765 &dev_attr_model
.attr
,
766 &dev_attr_vendor
.attr
,
768 &dev_attr_lunid
.attr
,
769 &dev_attr_raid_level
.attr
,
770 &dev_attr_usage_count
.attr
,
774 static struct attribute_group cciss_dev_attr_group
= {
775 .attrs
= cciss_dev_attrs
,
778 static const struct attribute_group
*cciss_dev_attr_groups
[] = {
779 &cciss_dev_attr_group
,
783 static struct device_type cciss_dev_type
= {
784 .name
= "cciss_device",
785 .groups
= cciss_dev_attr_groups
,
786 .release
= cciss_device_release
,
789 static struct bus_type cciss_bus_type
= {
794 * cciss_hba_release is called when the reference count
795 * of h->dev goes to zero.
797 static void cciss_hba_release(struct device
*dev
)
800 * nothing to do, but need this to avoid a warning
801 * about not having a release handler from lib/kref.c.
806 * Initialize sysfs entry for each controller. This sets up and registers
807 * the 'cciss#' directory for each individual controller under
808 * /sys/bus/pci/devices/<dev>/.
810 static int cciss_create_hba_sysfs_entry(struct ctlr_info
*h
)
812 device_initialize(&h
->dev
);
813 h
->dev
.type
= &cciss_host_type
;
814 h
->dev
.bus
= &cciss_bus_type
;
815 dev_set_name(&h
->dev
, "%s", h
->devname
);
816 h
->dev
.parent
= &h
->pdev
->dev
;
818 return device_add(&h
->dev
);
822 * Remove sysfs entries for an hba.
824 static void cciss_destroy_hba_sysfs_entry(struct ctlr_info
*h
)
827 put_device(&h
->dev
); /* final put. */
830 /* cciss_device_release is called when the reference count
831 * of h->drv[x]dev goes to zero.
833 static void cciss_device_release(struct device
*dev
)
835 drive_info_struct
*drv
= to_drv(dev
);
840 * Initialize sysfs for each logical drive. This sets up and registers
841 * the 'c#d#' directory for each individual logical drive under
842 * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from
843 * /sys/block/cciss!c#d# to this entry.
845 static long cciss_create_ld_sysfs_entry(struct ctlr_info
*h
,
850 if (h
->drv
[drv_index
]->device_initialized
)
853 dev
= &h
->drv
[drv_index
]->dev
;
854 device_initialize(dev
);
855 dev
->type
= &cciss_dev_type
;
856 dev
->bus
= &cciss_bus_type
;
857 dev_set_name(dev
, "c%dd%d", h
->ctlr
, drv_index
);
858 dev
->parent
= &h
->dev
;
859 h
->drv
[drv_index
]->device_initialized
= 1;
860 return device_add(dev
);
864 * Remove sysfs entries for a logical drive.
866 static void cciss_destroy_ld_sysfs_entry(struct ctlr_info
*h
, int drv_index
,
869 struct device
*dev
= &h
->drv
[drv_index
]->dev
;
871 /* special case for c*d0, we only destroy it on controller exit */
872 if (drv_index
== 0 && !ctlr_exiting
)
876 put_device(dev
); /* the "final" put. */
877 h
->drv
[drv_index
] = NULL
;
881 * For operations that cannot sleep, a command block is allocated at init,
882 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
883 * which ones are free or in use.
885 static CommandList_struct
*cmd_alloc(ctlr_info_t
*h
)
887 CommandList_struct
*c
;
890 dma_addr_t cmd_dma_handle
, err_dma_handle
;
893 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
896 } while (test_and_set_bit(i
& (BITS_PER_LONG
- 1),
897 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
)) != 0);
899 memset(c
, 0, sizeof(CommandList_struct
));
900 cmd_dma_handle
= h
->cmd_pool_dhandle
+ i
* sizeof(CommandList_struct
);
901 c
->err_info
= h
->errinfo_pool
+ i
;
902 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
903 err_dma_handle
= h
->errinfo_pool_dhandle
904 + i
* sizeof(ErrorInfo_struct
);
909 INIT_HLIST_NODE(&c
->list
);
910 c
->busaddr
= (__u32
) cmd_dma_handle
;
911 temp64
.val
= (__u64
) err_dma_handle
;
912 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
913 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
914 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
920 /* allocate a command using pci_alloc_consistent, used for ioctls,
921 * etc., not for the main i/o path.
923 static CommandList_struct
*cmd_special_alloc(ctlr_info_t
*h
)
925 CommandList_struct
*c
;
927 dma_addr_t cmd_dma_handle
, err_dma_handle
;
929 c
= (CommandList_struct
*) pci_alloc_consistent(h
->pdev
,
930 sizeof(CommandList_struct
), &cmd_dma_handle
);
933 memset(c
, 0, sizeof(CommandList_struct
));
937 c
->err_info
= (ErrorInfo_struct
*)
938 pci_alloc_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
941 if (c
->err_info
== NULL
) {
942 pci_free_consistent(h
->pdev
,
943 sizeof(CommandList_struct
), c
, cmd_dma_handle
);
946 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
948 INIT_HLIST_NODE(&c
->list
);
949 c
->busaddr
= (__u32
) cmd_dma_handle
;
950 temp64
.val
= (__u64
) err_dma_handle
;
951 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
952 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
953 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
959 static void cmd_free(ctlr_info_t
*h
, CommandList_struct
*c
)
964 clear_bit(i
& (BITS_PER_LONG
- 1),
965 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
));
969 static void cmd_special_free(ctlr_info_t
*h
, CommandList_struct
*c
)
973 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
974 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
975 pci_free_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
976 c
->err_info
, (dma_addr_t
) temp64
.val
);
977 pci_free_consistent(h
->pdev
, sizeof(CommandList_struct
),
978 c
, (dma_addr_t
) c
->busaddr
);
981 static inline ctlr_info_t
*get_host(struct gendisk
*disk
)
983 return disk
->queue
->queuedata
;
986 static inline drive_info_struct
*get_drv(struct gendisk
*disk
)
988 return disk
->private_data
;
992 * Open. Make sure the device is really there.
994 static int cciss_open(struct block_device
*bdev
, fmode_t mode
)
996 ctlr_info_t
*h
= get_host(bdev
->bd_disk
);
997 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
999 dev_dbg(&h
->pdev
->dev
, "cciss_open %s\n", bdev
->bd_disk
->disk_name
);
1000 if (drv
->busy_configuring
)
1003 * Root is allowed to open raw volume zero even if it's not configured
1004 * so array config can still work. Root is also allowed to open any
1005 * volume that has a LUN ID, so it can issue IOCTL to reread the
1006 * disk information. I don't think I really like this
1007 * but I'm already using way to many device nodes to claim another one
1008 * for "raw controller".
1010 if (drv
->heads
== 0) {
1011 if (MINOR(bdev
->bd_dev
) != 0) { /* not node 0? */
1012 /* if not node 0 make sure it is a partition = 0 */
1013 if (MINOR(bdev
->bd_dev
) & 0x0f) {
1015 /* if it is, make sure we have a LUN ID */
1016 } else if (memcmp(drv
->LunID
, CTLR_LUNID
,
1017 sizeof(drv
->LunID
))) {
1021 if (!capable(CAP_SYS_ADMIN
))
1029 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
)
1033 mutex_lock(&cciss_mutex
);
1034 ret
= cciss_open(bdev
, mode
);
1035 mutex_unlock(&cciss_mutex
);
1041 * Close. Sync first.
1043 static int cciss_release(struct gendisk
*disk
, fmode_t mode
)
1046 drive_info_struct
*drv
;
1048 mutex_lock(&cciss_mutex
);
1050 drv
= get_drv(disk
);
1051 dev_dbg(&h
->pdev
->dev
, "cciss_release %s\n", disk
->disk_name
);
1054 mutex_unlock(&cciss_mutex
);
1058 static int do_ioctl(struct block_device
*bdev
, fmode_t mode
,
1059 unsigned cmd
, unsigned long arg
)
1062 mutex_lock(&cciss_mutex
);
1063 ret
= cciss_ioctl(bdev
, mode
, cmd
, arg
);
1064 mutex_unlock(&cciss_mutex
);
1068 #ifdef CONFIG_COMPAT
1070 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1071 unsigned cmd
, unsigned long arg
);
1072 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1073 unsigned cmd
, unsigned long arg
);
1075 static int cciss_compat_ioctl(struct block_device
*bdev
, fmode_t mode
,
1076 unsigned cmd
, unsigned long arg
)
1079 case CCISS_GETPCIINFO
:
1080 case CCISS_GETINTINFO
:
1081 case CCISS_SETINTINFO
:
1082 case CCISS_GETNODENAME
:
1083 case CCISS_SETNODENAME
:
1084 case CCISS_GETHEARTBEAT
:
1085 case CCISS_GETBUSTYPES
:
1086 case CCISS_GETFIRMVER
:
1087 case CCISS_GETDRIVVER
:
1088 case CCISS_REVALIDVOLS
:
1089 case CCISS_DEREGDISK
:
1090 case CCISS_REGNEWDISK
:
1092 case CCISS_RESCANDISK
:
1093 case CCISS_GETLUNINFO
:
1094 return do_ioctl(bdev
, mode
, cmd
, arg
);
1096 case CCISS_PASSTHRU32
:
1097 return cciss_ioctl32_passthru(bdev
, mode
, cmd
, arg
);
1098 case CCISS_BIG_PASSTHRU32
:
1099 return cciss_ioctl32_big_passthru(bdev
, mode
, cmd
, arg
);
1102 return -ENOIOCTLCMD
;
1106 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1107 unsigned cmd
, unsigned long arg
)
1109 IOCTL32_Command_struct __user
*arg32
=
1110 (IOCTL32_Command_struct __user
*) arg
;
1111 IOCTL_Command_struct arg64
;
1112 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
1118 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1119 sizeof(arg64
.LUN_info
));
1121 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1122 sizeof(arg64
.Request
));
1124 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1125 sizeof(arg64
.error_info
));
1126 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1127 err
|= get_user(cp
, &arg32
->buf
);
1128 arg64
.buf
= compat_ptr(cp
);
1129 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1134 err
= do_ioctl(bdev
, mode
, CCISS_PASSTHRU
, (unsigned long)p
);
1138 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1139 sizeof(arg32
->error_info
));
1145 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1146 unsigned cmd
, unsigned long arg
)
1148 BIG_IOCTL32_Command_struct __user
*arg32
=
1149 (BIG_IOCTL32_Command_struct __user
*) arg
;
1150 BIG_IOCTL_Command_struct arg64
;
1151 BIG_IOCTL_Command_struct __user
*p
=
1152 compat_alloc_user_space(sizeof(arg64
));
1156 memset(&arg64
, 0, sizeof(arg64
));
1159 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1160 sizeof(arg64
.LUN_info
));
1162 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1163 sizeof(arg64
.Request
));
1165 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1166 sizeof(arg64
.error_info
));
1167 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1168 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
1169 err
|= get_user(cp
, &arg32
->buf
);
1170 arg64
.buf
= compat_ptr(cp
);
1171 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1176 err
= do_ioctl(bdev
, mode
, CCISS_BIG_PASSTHRU
, (unsigned long)p
);
1180 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1181 sizeof(arg32
->error_info
));
1188 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1190 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1192 if (!drv
->cylinders
)
1195 geo
->heads
= drv
->heads
;
1196 geo
->sectors
= drv
->sectors
;
1197 geo
->cylinders
= drv
->cylinders
;
1201 static void check_ioctl_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
1203 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
1204 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
1205 (void)check_for_unit_attention(h
, c
);
1208 static int cciss_getpciinfo(ctlr_info_t
*h
, void __user
*argp
)
1210 cciss_pci_info_struct pciinfo
;
1214 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
1215 pciinfo
.bus
= h
->pdev
->bus
->number
;
1216 pciinfo
.dev_fn
= h
->pdev
->devfn
;
1217 pciinfo
.board_id
= h
->board_id
;
1218 if (copy_to_user(argp
, &pciinfo
, sizeof(cciss_pci_info_struct
)))
1223 static int cciss_getintinfo(ctlr_info_t
*h
, void __user
*argp
)
1225 cciss_coalint_struct intinfo
;
1229 intinfo
.delay
= readl(&h
->cfgtable
->HostWrite
.CoalIntDelay
);
1230 intinfo
.count
= readl(&h
->cfgtable
->HostWrite
.CoalIntCount
);
1232 (argp
, &intinfo
, sizeof(cciss_coalint_struct
)))
1237 static int cciss_setintinfo(ctlr_info_t
*h
, void __user
*argp
)
1239 cciss_coalint_struct intinfo
;
1240 unsigned long flags
;
1245 if (!capable(CAP_SYS_ADMIN
))
1247 if (copy_from_user(&intinfo
, argp
, sizeof(intinfo
)))
1249 if ((intinfo
.delay
== 0) && (intinfo
.count
== 0))
1251 spin_lock_irqsave(&h
->lock
, flags
);
1252 /* Update the field, and then ring the doorbell */
1253 writel(intinfo
.delay
, &(h
->cfgtable
->HostWrite
.CoalIntDelay
));
1254 writel(intinfo
.count
, &(h
->cfgtable
->HostWrite
.CoalIntCount
));
1255 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1257 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1258 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1260 udelay(1000); /* delay and try again */
1262 spin_unlock_irqrestore(&h
->lock
, flags
);
1263 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1268 static int cciss_getnodename(ctlr_info_t
*h
, void __user
*argp
)
1270 NodeName_type NodeName
;
1275 for (i
= 0; i
< 16; i
++)
1276 NodeName
[i
] = readb(&h
->cfgtable
->ServerName
[i
]);
1277 if (copy_to_user(argp
, NodeName
, sizeof(NodeName_type
)))
1282 static int cciss_setnodename(ctlr_info_t
*h
, void __user
*argp
)
1284 NodeName_type NodeName
;
1285 unsigned long flags
;
1290 if (!capable(CAP_SYS_ADMIN
))
1292 if (copy_from_user(NodeName
, argp
, sizeof(NodeName_type
)))
1294 spin_lock_irqsave(&h
->lock
, flags
);
1295 /* Update the field, and then ring the doorbell */
1296 for (i
= 0; i
< 16; i
++)
1297 writeb(NodeName
[i
], &h
->cfgtable
->ServerName
[i
]);
1298 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1299 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1300 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1302 udelay(1000); /* delay and try again */
1304 spin_unlock_irqrestore(&h
->lock
, flags
);
1305 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1310 static int cciss_getheartbeat(ctlr_info_t
*h
, void __user
*argp
)
1312 Heartbeat_type heartbeat
;
1316 heartbeat
= readl(&h
->cfgtable
->HeartBeat
);
1317 if (copy_to_user(argp
, &heartbeat
, sizeof(Heartbeat_type
)))
1322 static int cciss_getbustypes(ctlr_info_t
*h
, void __user
*argp
)
1324 BusTypes_type BusTypes
;
1328 BusTypes
= readl(&h
->cfgtable
->BusTypes
);
1329 if (copy_to_user(argp
, &BusTypes
, sizeof(BusTypes_type
)))
1334 static int cciss_getfirmver(ctlr_info_t
*h
, void __user
*argp
)
1336 FirmwareVer_type firmware
;
1340 memcpy(firmware
, h
->firm_ver
, 4);
1343 (argp
, firmware
, sizeof(FirmwareVer_type
)))
1348 static int cciss_getdrivver(ctlr_info_t
*h
, void __user
*argp
)
1350 DriverVer_type DriverVer
= DRIVER_VERSION
;
1354 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
1359 static int cciss_getluninfo(ctlr_info_t
*h
,
1360 struct gendisk
*disk
, void __user
*argp
)
1362 LogvolInfo_struct luninfo
;
1363 drive_info_struct
*drv
= get_drv(disk
);
1367 memcpy(&luninfo
.LunID
, drv
->LunID
, sizeof(luninfo
.LunID
));
1368 luninfo
.num_opens
= drv
->usage_count
;
1369 luninfo
.num_parts
= 0;
1370 if (copy_to_user(argp
, &luninfo
, sizeof(LogvolInfo_struct
)))
1375 static int cciss_passthru(ctlr_info_t
*h
, void __user
*argp
)
1377 IOCTL_Command_struct iocommand
;
1378 CommandList_struct
*c
;
1381 DECLARE_COMPLETION_ONSTACK(wait
);
1386 if (!capable(CAP_SYS_RAWIO
))
1390 (&iocommand
, argp
, sizeof(IOCTL_Command_struct
)))
1392 if ((iocommand
.buf_size
< 1) &&
1393 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
1396 if (iocommand
.buf_size
> 0) {
1397 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
1401 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
1402 /* Copy the data into the buffer we created */
1403 if (copy_from_user(buff
, iocommand
.buf
, iocommand
.buf_size
)) {
1408 memset(buff
, 0, iocommand
.buf_size
);
1410 c
= cmd_special_alloc(h
);
1415 /* Fill in the command type */
1416 c
->cmd_type
= CMD_IOCTL_PEND
;
1417 /* Fill in Command Header */
1418 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
1419 if (iocommand
.buf_size
> 0) { /* buffer to fill */
1420 c
->Header
.SGList
= 1;
1421 c
->Header
.SGTotal
= 1;
1422 } else { /* no buffers to fill */
1423 c
->Header
.SGList
= 0;
1424 c
->Header
.SGTotal
= 0;
1426 c
->Header
.LUN
= iocommand
.LUN_info
;
1427 /* use the kernel address the cmd block for tag */
1428 c
->Header
.Tag
.lower
= c
->busaddr
;
1430 /* Fill in Request block */
1431 c
->Request
= iocommand
.Request
;
1433 /* Fill in the scatter gather information */
1434 if (iocommand
.buf_size
> 0) {
1435 temp64
.val
= pci_map_single(h
->pdev
, buff
,
1436 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
1437 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
1438 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
1439 c
->SG
[0].Len
= iocommand
.buf_size
;
1440 c
->SG
[0].Ext
= 0; /* we are not chaining */
1444 enqueue_cmd_and_start_io(h
, c
);
1445 wait_for_completion(&wait
);
1447 /* unlock the buffers from DMA */
1448 temp64
.val32
.lower
= c
->SG
[0].Addr
.lower
;
1449 temp64
.val32
.upper
= c
->SG
[0].Addr
.upper
;
1450 pci_unmap_single(h
->pdev
, (dma_addr_t
) temp64
.val
, iocommand
.buf_size
,
1451 PCI_DMA_BIDIRECTIONAL
);
1452 check_ioctl_unit_attention(h
, c
);
1454 /* Copy the error information out */
1455 iocommand
.error_info
= *(c
->err_info
);
1456 if (copy_to_user(argp
, &iocommand
, sizeof(IOCTL_Command_struct
))) {
1458 cmd_special_free(h
, c
);
1462 if (iocommand
.Request
.Type
.Direction
== XFER_READ
) {
1463 /* Copy the data out of the buffer we created */
1464 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
1466 cmd_special_free(h
, c
);
1471 cmd_special_free(h
, c
);
1475 static int cciss_bigpassthru(ctlr_info_t
*h
, void __user
*argp
)
1477 BIG_IOCTL_Command_struct
*ioc
;
1478 CommandList_struct
*c
;
1479 unsigned char **buff
= NULL
;
1480 int *buff_size
= NULL
;
1485 DECLARE_COMPLETION_ONSTACK(wait
);
1488 BYTE __user
*data_ptr
;
1492 if (!capable(CAP_SYS_RAWIO
))
1494 ioc
= (BIG_IOCTL_Command_struct
*)
1495 kmalloc(sizeof(*ioc
), GFP_KERNEL
);
1500 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
1504 if ((ioc
->buf_size
< 1) &&
1505 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
1509 /* Check kmalloc limits using all SGs */
1510 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
1514 if (ioc
->buf_size
> ioc
->malloc_size
* MAXSGENTRIES
) {
1518 buff
= kzalloc(MAXSGENTRIES
* sizeof(char *), GFP_KERNEL
);
1523 buff_size
= kmalloc(MAXSGENTRIES
* sizeof(int), GFP_KERNEL
);
1528 left
= ioc
->buf_size
;
1529 data_ptr
= ioc
->buf
;
1531 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
1532 buff_size
[sg_used
] = sz
;
1533 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
1534 if (buff
[sg_used
] == NULL
) {
1538 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
1539 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
1544 memset(buff
[sg_used
], 0, sz
);
1550 c
= cmd_special_alloc(h
);
1555 c
->cmd_type
= CMD_IOCTL_PEND
;
1556 c
->Header
.ReplyQueue
= 0;
1557 c
->Header
.SGList
= sg_used
;
1558 c
->Header
.SGTotal
= sg_used
;
1559 c
->Header
.LUN
= ioc
->LUN_info
;
1560 c
->Header
.Tag
.lower
= c
->busaddr
;
1562 c
->Request
= ioc
->Request
;
1563 for (i
= 0; i
< sg_used
; i
++) {
1564 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
], buff_size
[i
],
1565 PCI_DMA_BIDIRECTIONAL
);
1566 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
1567 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
1568 c
->SG
[i
].Len
= buff_size
[i
];
1569 c
->SG
[i
].Ext
= 0; /* we are not chaining */
1572 enqueue_cmd_and_start_io(h
, c
);
1573 wait_for_completion(&wait
);
1574 /* unlock the buffers from DMA */
1575 for (i
= 0; i
< sg_used
; i
++) {
1576 temp64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1577 temp64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1578 pci_unmap_single(h
->pdev
,
1579 (dma_addr_t
) temp64
.val
, buff_size
[i
],
1580 PCI_DMA_BIDIRECTIONAL
);
1582 check_ioctl_unit_attention(h
, c
);
1583 /* Copy the error information out */
1584 ioc
->error_info
= *(c
->err_info
);
1585 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
1586 cmd_special_free(h
, c
);
1590 if (ioc
->Request
.Type
.Direction
== XFER_READ
) {
1591 /* Copy the data out of the buffer we created */
1592 BYTE __user
*ptr
= ioc
->buf
;
1593 for (i
= 0; i
< sg_used
; i
++) {
1594 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
1595 cmd_special_free(h
, c
);
1599 ptr
+= buff_size
[i
];
1602 cmd_special_free(h
, c
);
1606 for (i
= 0; i
< sg_used
; i
++)
1615 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
1616 unsigned int cmd
, unsigned long arg
)
1618 struct gendisk
*disk
= bdev
->bd_disk
;
1619 ctlr_info_t
*h
= get_host(disk
);
1620 void __user
*argp
= (void __user
*)arg
;
1622 dev_dbg(&h
->pdev
->dev
, "cciss_ioctl: Called with cmd=%x %lx\n",
1625 case CCISS_GETPCIINFO
:
1626 return cciss_getpciinfo(h
, argp
);
1627 case CCISS_GETINTINFO
:
1628 return cciss_getintinfo(h
, argp
);
1629 case CCISS_SETINTINFO
:
1630 return cciss_setintinfo(h
, argp
);
1631 case CCISS_GETNODENAME
:
1632 return cciss_getnodename(h
, argp
);
1633 case CCISS_SETNODENAME
:
1634 return cciss_setnodename(h
, argp
);
1635 case CCISS_GETHEARTBEAT
:
1636 return cciss_getheartbeat(h
, argp
);
1637 case CCISS_GETBUSTYPES
:
1638 return cciss_getbustypes(h
, argp
);
1639 case CCISS_GETFIRMVER
:
1640 return cciss_getfirmver(h
, argp
);
1641 case CCISS_GETDRIVVER
:
1642 return cciss_getdrivver(h
, argp
);
1643 case CCISS_DEREGDISK
:
1645 case CCISS_REVALIDVOLS
:
1646 return rebuild_lun_table(h
, 0, 1);
1647 case CCISS_GETLUNINFO
:
1648 return cciss_getluninfo(h
, disk
, argp
);
1649 case CCISS_PASSTHRU
:
1650 return cciss_passthru(h
, argp
);
1651 case CCISS_BIG_PASSTHRU
:
1652 return cciss_bigpassthru(h
, argp
);
1654 /* scsi_cmd_ioctl handles these, below, though some are not */
1655 /* very meaningful for cciss. SG_IO is the main one people want. */
1657 case SG_GET_VERSION_NUM
:
1658 case SG_SET_TIMEOUT
:
1659 case SG_GET_TIMEOUT
:
1660 case SG_GET_RESERVED_SIZE
:
1661 case SG_SET_RESERVED_SIZE
:
1662 case SG_EMULATED_HOST
:
1664 case SCSI_IOCTL_SEND_COMMAND
:
1665 return scsi_cmd_ioctl(disk
->queue
, disk
, mode
, cmd
, argp
);
1667 /* scsi_cmd_ioctl would normally handle these, below, but */
1668 /* they aren't a good fit for cciss, as CD-ROMs are */
1669 /* not supported, and we don't have any bus/target/lun */
1670 /* which we present to the kernel. */
1672 case CDROM_SEND_PACKET
:
1673 case CDROMCLOSETRAY
:
1675 case SCSI_IOCTL_GET_IDLUN
:
1676 case SCSI_IOCTL_GET_BUS_NUMBER
:
1682 static void cciss_check_queues(ctlr_info_t
*h
)
1684 int start_queue
= h
->next_to_run
;
1687 /* check to see if we have maxed out the number of commands that can
1688 * be placed on the queue. If so then exit. We do this check here
1689 * in case the interrupt we serviced was from an ioctl and did not
1690 * free any new commands.
1692 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
)
1695 /* We have room on the queue for more commands. Now we need to queue
1696 * them up. We will also keep track of the next queue to run so
1697 * that every queue gets a chance to be started first.
1699 for (i
= 0; i
< h
->highest_lun
+ 1; i
++) {
1700 int curr_queue
= (start_queue
+ i
) % (h
->highest_lun
+ 1);
1701 /* make sure the disk has been added and the drive is real
1702 * because this can be called from the middle of init_one.
1704 if (!h
->drv
[curr_queue
])
1706 if (!(h
->drv
[curr_queue
]->queue
) ||
1707 !(h
->drv
[curr_queue
]->heads
))
1709 blk_start_queue(h
->gendisk
[curr_queue
]->queue
);
1711 /* check to see if we have maxed out the number of commands
1712 * that can be placed on the queue.
1714 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
) {
1715 if (curr_queue
== start_queue
) {
1717 (start_queue
+ 1) % (h
->highest_lun
+ 1);
1720 h
->next_to_run
= curr_queue
;
1727 static void cciss_softirq_done(struct request
*rq
)
1729 CommandList_struct
*c
= rq
->completion_data
;
1730 ctlr_info_t
*h
= hba
[c
->ctlr
];
1731 SGDescriptor_struct
*curr_sg
= c
->SG
;
1733 unsigned long flags
;
1737 if (c
->Request
.Type
.Direction
== XFER_READ
)
1738 ddir
= PCI_DMA_FROMDEVICE
;
1740 ddir
= PCI_DMA_TODEVICE
;
1742 /* command did not need to be retried */
1743 /* unmap the DMA mapping for all the scatter gather elements */
1744 for (i
= 0; i
< c
->Header
.SGList
; i
++) {
1745 if (curr_sg
[sg_index
].Ext
== CCISS_SG_CHAIN
) {
1746 cciss_unmap_sg_chain_block(h
, c
);
1747 /* Point to the next block */
1748 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
1751 temp64
.val32
.lower
= curr_sg
[sg_index
].Addr
.lower
;
1752 temp64
.val32
.upper
= curr_sg
[sg_index
].Addr
.upper
;
1753 pci_unmap_page(h
->pdev
, temp64
.val
, curr_sg
[sg_index
].Len
,
1758 dev_dbg(&h
->pdev
->dev
, "Done with %p\n", rq
);
1760 /* set the residual count for pc requests */
1761 if (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
1762 rq
->resid_len
= c
->err_info
->ResidualCnt
;
1764 blk_end_request_all(rq
, (rq
->errors
== 0) ? 0 : -EIO
);
1766 spin_lock_irqsave(&h
->lock
, flags
);
1768 cciss_check_queues(h
);
1769 spin_unlock_irqrestore(&h
->lock
, flags
);
1772 static inline void log_unit_to_scsi3addr(ctlr_info_t
*h
,
1773 unsigned char scsi3addr
[], uint32_t log_unit
)
1775 memcpy(scsi3addr
, h
->drv
[log_unit
]->LunID
,
1776 sizeof(h
->drv
[log_unit
]->LunID
));
1779 /* This function gets the SCSI vendor, model, and revision of a logical drive
1780 * via the inquiry page 0. Model, vendor, and rev are set to empty strings if
1781 * they cannot be read.
1783 static void cciss_get_device_descr(ctlr_info_t
*h
, int logvol
,
1784 char *vendor
, char *model
, char *rev
)
1787 InquiryData_struct
*inq_buf
;
1788 unsigned char scsi3addr
[8];
1794 inq_buf
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1798 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1799 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buf
, sizeof(*inq_buf
), 0,
1800 scsi3addr
, TYPE_CMD
);
1802 memcpy(vendor
, &inq_buf
->data_byte
[8], VENDOR_LEN
);
1803 vendor
[VENDOR_LEN
] = '\0';
1804 memcpy(model
, &inq_buf
->data_byte
[16], MODEL_LEN
);
1805 model
[MODEL_LEN
] = '\0';
1806 memcpy(rev
, &inq_buf
->data_byte
[32], REV_LEN
);
1807 rev
[REV_LEN
] = '\0';
1814 /* This function gets the serial number of a logical drive via
1815 * inquiry page 0x83. Serial no. is 16 bytes. If the serial
1816 * number cannot be had, for whatever reason, 16 bytes of 0xff
1817 * are returned instead.
1819 static void cciss_get_serial_no(ctlr_info_t
*h
, int logvol
,
1820 unsigned char *serial_no
, int buflen
)
1822 #define PAGE_83_INQ_BYTES 64
1825 unsigned char scsi3addr
[8];
1829 memset(serial_no
, 0xff, buflen
);
1830 buf
= kzalloc(PAGE_83_INQ_BYTES
, GFP_KERNEL
);
1833 memset(serial_no
, 0, buflen
);
1834 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1835 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, buf
,
1836 PAGE_83_INQ_BYTES
, 0x83, scsi3addr
, TYPE_CMD
);
1838 memcpy(serial_no
, &buf
[8], buflen
);
1844 * cciss_add_disk sets up the block device queue for a logical drive
1846 static int cciss_add_disk(ctlr_info_t
*h
, struct gendisk
*disk
,
1849 disk
->queue
= blk_init_queue(do_cciss_request
, &h
->lock
);
1851 goto init_queue_failure
;
1852 sprintf(disk
->disk_name
, "cciss/c%dd%d", h
->ctlr
, drv_index
);
1853 disk
->major
= h
->major
;
1854 disk
->first_minor
= drv_index
<< NWD_SHIFT
;
1855 disk
->fops
= &cciss_fops
;
1856 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
1858 disk
->private_data
= h
->drv
[drv_index
];
1859 disk
->driverfs_dev
= &h
->drv
[drv_index
]->dev
;
1861 /* Set up queue information */
1862 blk_queue_bounce_limit(disk
->queue
, h
->pdev
->dma_mask
);
1864 /* This is a hardware imposed limit. */
1865 blk_queue_max_segments(disk
->queue
, h
->maxsgentries
);
1867 blk_queue_max_hw_sectors(disk
->queue
, h
->cciss_max_sectors
);
1869 blk_queue_softirq_done(disk
->queue
, cciss_softirq_done
);
1871 disk
->queue
->queuedata
= h
;
1873 blk_queue_logical_block_size(disk
->queue
,
1874 h
->drv
[drv_index
]->block_size
);
1876 /* Make sure all queue data is written out before */
1877 /* setting h->drv[drv_index]->queue, as setting this */
1878 /* allows the interrupt handler to start the queue */
1880 h
->drv
[drv_index
]->queue
= disk
->queue
;
1885 blk_cleanup_queue(disk
->queue
);
1891 /* This function will check the usage_count of the drive to be updated/added.
1892 * If the usage_count is zero and it is a heretofore unknown drive, or,
1893 * the drive's capacity, geometry, or serial number has changed,
1894 * then the drive information will be updated and the disk will be
1895 * re-registered with the kernel. If these conditions don't hold,
1896 * then it will be left alone for the next reboot. The exception to this
1897 * is disk 0 which will always be left registered with the kernel since it
1898 * is also the controller node. Any changes to disk 0 will show up on
1901 static void cciss_update_drive_info(ctlr_info_t
*h
, int drv_index
,
1902 int first_time
, int via_ioctl
)
1904 struct gendisk
*disk
;
1905 InquiryData_struct
*inq_buff
= NULL
;
1906 unsigned int block_size
;
1907 sector_t total_size
;
1908 unsigned long flags
= 0;
1910 drive_info_struct
*drvinfo
;
1912 /* Get information about the disk and modify the driver structure */
1913 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1914 drvinfo
= kzalloc(sizeof(*drvinfo
), GFP_KERNEL
);
1915 if (inq_buff
== NULL
|| drvinfo
== NULL
)
1918 /* testing to see if 16-byte CDBs are already being used */
1919 if (h
->cciss_read
== CCISS_READ_16
) {
1920 cciss_read_capacity_16(h
, drv_index
,
1921 &total_size
, &block_size
);
1924 cciss_read_capacity(h
, drv_index
, &total_size
, &block_size
);
1925 /* if read_capacity returns all F's this volume is >2TB */
1926 /* in size so we switch to 16-byte CDB's for all */
1927 /* read/write ops */
1928 if (total_size
== 0xFFFFFFFFULL
) {
1929 cciss_read_capacity_16(h
, drv_index
,
1930 &total_size
, &block_size
);
1931 h
->cciss_read
= CCISS_READ_16
;
1932 h
->cciss_write
= CCISS_WRITE_16
;
1934 h
->cciss_read
= CCISS_READ_10
;
1935 h
->cciss_write
= CCISS_WRITE_10
;
1939 cciss_geometry_inquiry(h
, drv_index
, total_size
, block_size
,
1941 drvinfo
->block_size
= block_size
;
1942 drvinfo
->nr_blocks
= total_size
+ 1;
1944 cciss_get_device_descr(h
, drv_index
, drvinfo
->vendor
,
1945 drvinfo
->model
, drvinfo
->rev
);
1946 cciss_get_serial_no(h
, drv_index
, drvinfo
->serial_no
,
1947 sizeof(drvinfo
->serial_no
));
1948 /* Save the lunid in case we deregister the disk, below. */
1949 memcpy(drvinfo
->LunID
, h
->drv
[drv_index
]->LunID
,
1950 sizeof(drvinfo
->LunID
));
1952 /* Is it the same disk we already know, and nothing's changed? */
1953 if (h
->drv
[drv_index
]->raid_level
!= -1 &&
1954 ((memcmp(drvinfo
->serial_no
,
1955 h
->drv
[drv_index
]->serial_no
, 16) == 0) &&
1956 drvinfo
->block_size
== h
->drv
[drv_index
]->block_size
&&
1957 drvinfo
->nr_blocks
== h
->drv
[drv_index
]->nr_blocks
&&
1958 drvinfo
->heads
== h
->drv
[drv_index
]->heads
&&
1959 drvinfo
->sectors
== h
->drv
[drv_index
]->sectors
&&
1960 drvinfo
->cylinders
== h
->drv
[drv_index
]->cylinders
))
1961 /* The disk is unchanged, nothing to update */
1964 /* If we get here it's not the same disk, or something's changed,
1965 * so we need to * deregister it, and re-register it, if it's not
1967 * If the disk already exists then deregister it before proceeding
1968 * (unless it's the first disk (for the controller node).
1970 if (h
->drv
[drv_index
]->raid_level
!= -1 && drv_index
!= 0) {
1971 dev_warn(&h
->pdev
->dev
, "disk %d has changed.\n", drv_index
);
1972 spin_lock_irqsave(&h
->lock
, flags
);
1973 h
->drv
[drv_index
]->busy_configuring
= 1;
1974 spin_unlock_irqrestore(&h
->lock
, flags
);
1976 /* deregister_disk sets h->drv[drv_index]->queue = NULL
1977 * which keeps the interrupt handler from starting
1980 ret
= deregister_disk(h
, drv_index
, 0, via_ioctl
);
1983 /* If the disk is in use return */
1987 /* Save the new information from cciss_geometry_inquiry
1988 * and serial number inquiry. If the disk was deregistered
1989 * above, then h->drv[drv_index] will be NULL.
1991 if (h
->drv
[drv_index
] == NULL
) {
1992 drvinfo
->device_initialized
= 0;
1993 h
->drv
[drv_index
] = drvinfo
;
1994 drvinfo
= NULL
; /* so it won't be freed below. */
1996 /* special case for cxd0 */
1997 h
->drv
[drv_index
]->block_size
= drvinfo
->block_size
;
1998 h
->drv
[drv_index
]->nr_blocks
= drvinfo
->nr_blocks
;
1999 h
->drv
[drv_index
]->heads
= drvinfo
->heads
;
2000 h
->drv
[drv_index
]->sectors
= drvinfo
->sectors
;
2001 h
->drv
[drv_index
]->cylinders
= drvinfo
->cylinders
;
2002 h
->drv
[drv_index
]->raid_level
= drvinfo
->raid_level
;
2003 memcpy(h
->drv
[drv_index
]->serial_no
, drvinfo
->serial_no
, 16);
2004 memcpy(h
->drv
[drv_index
]->vendor
, drvinfo
->vendor
,
2006 memcpy(h
->drv
[drv_index
]->model
, drvinfo
->model
, MODEL_LEN
+ 1);
2007 memcpy(h
->drv
[drv_index
]->rev
, drvinfo
->rev
, REV_LEN
+ 1);
2011 disk
= h
->gendisk
[drv_index
];
2012 set_capacity(disk
, h
->drv
[drv_index
]->nr_blocks
);
2014 /* If it's not disk 0 (drv_index != 0)
2015 * or if it was disk 0, but there was previously
2016 * no actual corresponding configured logical drive
2017 * (raid_leve == -1) then we want to update the
2018 * logical drive's information.
2020 if (drv_index
|| first_time
) {
2021 if (cciss_add_disk(h
, disk
, drv_index
) != 0) {
2022 cciss_free_gendisk(h
, drv_index
);
2023 cciss_free_drive_info(h
, drv_index
);
2024 dev_warn(&h
->pdev
->dev
, "could not update disk %d\n",
2035 dev_err(&h
->pdev
->dev
, "out of memory\n");
2039 /* This function will find the first index of the controllers drive array
2040 * that has a null drv pointer and allocate the drive info struct and
2041 * will return that index This is where new drives will be added.
2042 * If the index to be returned is greater than the highest_lun index for
2043 * the controller then highest_lun is set * to this new index.
2044 * If there are no available indexes or if tha allocation fails, then -1
2045 * is returned. * "controller_node" is used to know if this is a real
2046 * logical drive, or just the controller node, which determines if this
2047 * counts towards highest_lun.
2049 static int cciss_alloc_drive_info(ctlr_info_t
*h
, int controller_node
)
2052 drive_info_struct
*drv
;
2054 /* Search for an empty slot for our drive info */
2055 for (i
= 0; i
< CISS_MAX_LUN
; i
++) {
2057 /* if not cxd0 case, and it's occupied, skip it. */
2058 if (h
->drv
[i
] && i
!= 0)
2061 * If it's cxd0 case, and drv is alloc'ed already, and a
2062 * disk is configured there, skip it.
2064 if (i
== 0 && h
->drv
[i
] && h
->drv
[i
]->raid_level
!= -1)
2068 * We've found an empty slot. Update highest_lun
2069 * provided this isn't just the fake cxd0 controller node.
2071 if (i
> h
->highest_lun
&& !controller_node
)
2074 /* If adding a real disk at cxd0, and it's already alloc'ed */
2075 if (i
== 0 && h
->drv
[i
] != NULL
)
2079 * Found an empty slot, not already alloc'ed. Allocate it.
2080 * Mark it with raid_level == -1, so we know it's new later on.
2082 drv
= kzalloc(sizeof(*drv
), GFP_KERNEL
);
2085 drv
->raid_level
= -1; /* so we know it's new */
2092 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
)
2094 kfree(h
->drv
[drv_index
]);
2095 h
->drv
[drv_index
] = NULL
;
2098 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
)
2100 put_disk(h
->gendisk
[drv_index
]);
2101 h
->gendisk
[drv_index
] = NULL
;
2104 /* cciss_add_gendisk finds a free hba[]->drv structure
2105 * and allocates a gendisk if needed, and sets the lunid
2106 * in the drvinfo structure. It returns the index into
2107 * the ->drv[] array, or -1 if none are free.
2108 * is_controller_node indicates whether highest_lun should
2109 * count this disk, or if it's only being added to provide
2110 * a means to talk to the controller in case no logical
2111 * drives have yet been configured.
2113 static int cciss_add_gendisk(ctlr_info_t
*h
, unsigned char lunid
[],
2114 int controller_node
)
2118 drv_index
= cciss_alloc_drive_info(h
, controller_node
);
2119 if (drv_index
== -1)
2122 /*Check if the gendisk needs to be allocated */
2123 if (!h
->gendisk
[drv_index
]) {
2124 h
->gendisk
[drv_index
] =
2125 alloc_disk(1 << NWD_SHIFT
);
2126 if (!h
->gendisk
[drv_index
]) {
2127 dev_err(&h
->pdev
->dev
,
2128 "could not allocate a new disk %d\n",
2130 goto err_free_drive_info
;
2133 memcpy(h
->drv
[drv_index
]->LunID
, lunid
,
2134 sizeof(h
->drv
[drv_index
]->LunID
));
2135 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
2137 /* Don't need to mark this busy because nobody */
2138 /* else knows about this disk yet to contend */
2139 /* for access to it. */
2140 h
->drv
[drv_index
]->busy_configuring
= 0;
2145 cciss_free_gendisk(h
, drv_index
);
2146 err_free_drive_info
:
2147 cciss_free_drive_info(h
, drv_index
);
2151 /* This is for the special case of a controller which
2152 * has no logical drives. In this case, we still need
2153 * to register a disk so the controller can be accessed
2154 * by the Array Config Utility.
2156 static void cciss_add_controller_node(ctlr_info_t
*h
)
2158 struct gendisk
*disk
;
2161 if (h
->gendisk
[0] != NULL
) /* already did this? Then bail. */
2164 drv_index
= cciss_add_gendisk(h
, CTLR_LUNID
, 1);
2165 if (drv_index
== -1)
2167 h
->drv
[drv_index
]->block_size
= 512;
2168 h
->drv
[drv_index
]->nr_blocks
= 0;
2169 h
->drv
[drv_index
]->heads
= 0;
2170 h
->drv
[drv_index
]->sectors
= 0;
2171 h
->drv
[drv_index
]->cylinders
= 0;
2172 h
->drv
[drv_index
]->raid_level
= -1;
2173 memset(h
->drv
[drv_index
]->serial_no
, 0, 16);
2174 disk
= h
->gendisk
[drv_index
];
2175 if (cciss_add_disk(h
, disk
, drv_index
) == 0)
2177 cciss_free_gendisk(h
, drv_index
);
2178 cciss_free_drive_info(h
, drv_index
);
2180 dev_warn(&h
->pdev
->dev
, "could not add disk 0.\n");
2184 /* This function will add and remove logical drives from the Logical
2185 * drive array of the controller and maintain persistency of ordering
2186 * so that mount points are preserved until the next reboot. This allows
2187 * for the removal of logical drives in the middle of the drive array
2188 * without a re-ordering of those drives.
2190 * h = The controller to perform the operations on
2192 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
,
2196 ReportLunData_struct
*ld_buff
= NULL
;
2202 unsigned char lunid
[8] = CTLR_LUNID
;
2203 unsigned long flags
;
2205 if (!capable(CAP_SYS_RAWIO
))
2208 /* Set busy_configuring flag for this operation */
2209 spin_lock_irqsave(&h
->lock
, flags
);
2210 if (h
->busy_configuring
) {
2211 spin_unlock_irqrestore(&h
->lock
, flags
);
2214 h
->busy_configuring
= 1;
2215 spin_unlock_irqrestore(&h
->lock
, flags
);
2217 ld_buff
= kzalloc(sizeof(ReportLunData_struct
), GFP_KERNEL
);
2218 if (ld_buff
== NULL
)
2221 return_code
= sendcmd_withirq(h
, CISS_REPORT_LOG
, ld_buff
,
2222 sizeof(ReportLunData_struct
),
2223 0, CTLR_LUNID
, TYPE_CMD
);
2225 if (return_code
== IO_OK
)
2226 listlength
= be32_to_cpu(*(__be32
*) ld_buff
->LUNListLength
);
2227 else { /* reading number of logical volumes failed */
2228 dev_warn(&h
->pdev
->dev
,
2229 "report logical volume command failed\n");
2234 num_luns
= listlength
/ 8; /* 8 bytes per entry */
2235 if (num_luns
> CISS_MAX_LUN
) {
2236 num_luns
= CISS_MAX_LUN
;
2237 dev_warn(&h
->pdev
->dev
, "more luns configured"
2238 " on controller than can be handled by"
2243 cciss_add_controller_node(h
);
2245 /* Compare controller drive array to driver's drive array
2246 * to see if any drives are missing on the controller due
2247 * to action of Array Config Utility (user deletes drive)
2248 * and deregister logical drives which have disappeared.
2250 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2254 /* skip holes in the array from already deleted drives */
2255 if (h
->drv
[i
] == NULL
)
2258 for (j
= 0; j
< num_luns
; j
++) {
2259 memcpy(lunid
, &ld_buff
->LUN
[j
][0], sizeof(lunid
));
2260 if (memcmp(h
->drv
[i
]->LunID
, lunid
,
2261 sizeof(lunid
)) == 0) {
2267 /* Deregister it from the OS, it's gone. */
2268 spin_lock_irqsave(&h
->lock
, flags
);
2269 h
->drv
[i
]->busy_configuring
= 1;
2270 spin_unlock_irqrestore(&h
->lock
, flags
);
2271 return_code
= deregister_disk(h
, i
, 1, via_ioctl
);
2272 if (h
->drv
[i
] != NULL
)
2273 h
->drv
[i
]->busy_configuring
= 0;
2277 /* Compare controller drive array to driver's drive array.
2278 * Check for updates in the drive information and any new drives
2279 * on the controller due to ACU adding logical drives, or changing
2280 * a logical drive's size, etc. Reregister any new/changed drives
2282 for (i
= 0; i
< num_luns
; i
++) {
2287 memcpy(lunid
, &ld_buff
->LUN
[i
][0], sizeof(lunid
));
2288 /* Find if the LUN is already in the drive array
2289 * of the driver. If so then update its info
2290 * if not in use. If it does not exist then find
2291 * the first free index and add it.
2293 for (j
= 0; j
<= h
->highest_lun
; j
++) {
2294 if (h
->drv
[j
] != NULL
&&
2295 memcmp(h
->drv
[j
]->LunID
, lunid
,
2296 sizeof(h
->drv
[j
]->LunID
)) == 0) {
2303 /* check if the drive was found already in the array */
2305 drv_index
= cciss_add_gendisk(h
, lunid
, 0);
2306 if (drv_index
== -1)
2309 cciss_update_drive_info(h
, drv_index
, first_time
, via_ioctl
);
2314 h
->busy_configuring
= 0;
2315 /* We return -1 here to tell the ACU that we have registered/updated
2316 * all of the drives that we can and to keep it from calling us
2321 dev_err(&h
->pdev
->dev
, "out of memory\n");
2322 h
->busy_configuring
= 0;
2326 static void cciss_clear_drive_info(drive_info_struct
*drive_info
)
2328 /* zero out the disk size info */
2329 drive_info
->nr_blocks
= 0;
2330 drive_info
->block_size
= 0;
2331 drive_info
->heads
= 0;
2332 drive_info
->sectors
= 0;
2333 drive_info
->cylinders
= 0;
2334 drive_info
->raid_level
= -1;
2335 memset(drive_info
->serial_no
, 0, sizeof(drive_info
->serial_no
));
2336 memset(drive_info
->model
, 0, sizeof(drive_info
->model
));
2337 memset(drive_info
->rev
, 0, sizeof(drive_info
->rev
));
2338 memset(drive_info
->vendor
, 0, sizeof(drive_info
->vendor
));
2340 * don't clear the LUNID though, we need to remember which
2345 /* This function will deregister the disk and it's queue from the
2346 * kernel. It must be called with the controller lock held and the
2347 * drv structures busy_configuring flag set. It's parameters are:
2349 * disk = This is the disk to be deregistered
2350 * drv = This is the drive_info_struct associated with the disk to be
2351 * deregistered. It contains information about the disk used
2353 * clear_all = This flag determines whether or not the disk information
2354 * is going to be completely cleared out and the highest_lun
2355 * reset. Sometimes we want to clear out information about
2356 * the disk in preparation for re-adding it. In this case
2357 * the highest_lun should be left unchanged and the LunID
2358 * should not be cleared.
2360 * This indicates whether we've reached this path via ioctl.
2361 * This affects the maximum usage count allowed for c0d0 to be messed with.
2362 * If this path is reached via ioctl(), then the max_usage_count will
2363 * be 1, as the process calling ioctl() has got to have the device open.
2364 * If we get here via sysfs, then the max usage count will be zero.
2366 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
2367 int clear_all
, int via_ioctl
)
2370 struct gendisk
*disk
;
2371 drive_info_struct
*drv
;
2372 int recalculate_highest_lun
;
2374 if (!capable(CAP_SYS_RAWIO
))
2377 drv
= h
->drv
[drv_index
];
2378 disk
= h
->gendisk
[drv_index
];
2380 /* make sure logical volume is NOT is use */
2381 if (clear_all
|| (h
->gendisk
[0] == disk
)) {
2382 if (drv
->usage_count
> via_ioctl
)
2384 } else if (drv
->usage_count
> 0)
2387 recalculate_highest_lun
= (drv
== h
->drv
[h
->highest_lun
]);
2389 /* invalidate the devices and deregister the disk. If it is disk
2390 * zero do not deregister it but just zero out it's values. This
2391 * allows us to delete disk zero but keep the controller registered.
2393 if (h
->gendisk
[0] != disk
) {
2394 struct request_queue
*q
= disk
->queue
;
2395 if (disk
->flags
& GENHD_FL_UP
) {
2396 cciss_destroy_ld_sysfs_entry(h
, drv_index
, 0);
2400 blk_cleanup_queue(q
);
2401 /* If clear_all is set then we are deleting the logical
2402 * drive, not just refreshing its info. For drives
2403 * other than disk 0 we will call put_disk. We do not
2404 * do this for disk 0 as we need it to be able to
2405 * configure the controller.
2408 /* This isn't pretty, but we need to find the
2409 * disk in our array and NULL our the pointer.
2410 * This is so that we will call alloc_disk if
2411 * this index is used again later.
2413 for (i
=0; i
< CISS_MAX_LUN
; i
++){
2414 if (h
->gendisk
[i
] == disk
) {
2415 h
->gendisk
[i
] = NULL
;
2422 set_capacity(disk
, 0);
2423 cciss_clear_drive_info(drv
);
2428 /* if it was the last disk, find the new hightest lun */
2429 if (clear_all
&& recalculate_highest_lun
) {
2430 int newhighest
= -1;
2431 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2432 /* if the disk has size > 0, it is available */
2433 if (h
->drv
[i
] && h
->drv
[i
]->heads
)
2436 h
->highest_lun
= newhighest
;
2441 static int fill_cmd(ctlr_info_t
*h
, CommandList_struct
*c
, __u8 cmd
, void *buff
,
2442 size_t size
, __u8 page_code
, unsigned char *scsi3addr
,
2445 u64bit buff_dma_handle
;
2448 c
->cmd_type
= CMD_IOCTL_PEND
;
2449 c
->Header
.ReplyQueue
= 0;
2451 c
->Header
.SGList
= 1;
2452 c
->Header
.SGTotal
= 1;
2454 c
->Header
.SGList
= 0;
2455 c
->Header
.SGTotal
= 0;
2457 c
->Header
.Tag
.lower
= c
->busaddr
;
2458 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2460 c
->Request
.Type
.Type
= cmd_type
;
2461 if (cmd_type
== TYPE_CMD
) {
2464 /* are we trying to read a vital product page */
2465 if (page_code
!= 0) {
2466 c
->Request
.CDB
[1] = 0x01;
2467 c
->Request
.CDB
[2] = page_code
;
2469 c
->Request
.CDBLen
= 6;
2470 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2471 c
->Request
.Type
.Direction
= XFER_READ
;
2472 c
->Request
.Timeout
= 0;
2473 c
->Request
.CDB
[0] = CISS_INQUIRY
;
2474 c
->Request
.CDB
[4] = size
& 0xFF;
2476 case CISS_REPORT_LOG
:
2477 case CISS_REPORT_PHYS
:
2478 /* Talking to controller so It's a physical command
2479 mode = 00 target = 0. Nothing to write.
2481 c
->Request
.CDBLen
= 12;
2482 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2483 c
->Request
.Type
.Direction
= XFER_READ
;
2484 c
->Request
.Timeout
= 0;
2485 c
->Request
.CDB
[0] = cmd
;
2486 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2487 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2488 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2489 c
->Request
.CDB
[9] = size
& 0xFF;
2492 case CCISS_READ_CAPACITY
:
2493 c
->Request
.CDBLen
= 10;
2494 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2495 c
->Request
.Type
.Direction
= XFER_READ
;
2496 c
->Request
.Timeout
= 0;
2497 c
->Request
.CDB
[0] = cmd
;
2499 case CCISS_READ_CAPACITY_16
:
2500 c
->Request
.CDBLen
= 16;
2501 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2502 c
->Request
.Type
.Direction
= XFER_READ
;
2503 c
->Request
.Timeout
= 0;
2504 c
->Request
.CDB
[0] = cmd
;
2505 c
->Request
.CDB
[1] = 0x10;
2506 c
->Request
.CDB
[10] = (size
>> 24) & 0xFF;
2507 c
->Request
.CDB
[11] = (size
>> 16) & 0xFF;
2508 c
->Request
.CDB
[12] = (size
>> 8) & 0xFF;
2509 c
->Request
.CDB
[13] = size
& 0xFF;
2510 c
->Request
.Timeout
= 0;
2511 c
->Request
.CDB
[0] = cmd
;
2513 case CCISS_CACHE_FLUSH
:
2514 c
->Request
.CDBLen
= 12;
2515 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2516 c
->Request
.Type
.Direction
= XFER_WRITE
;
2517 c
->Request
.Timeout
= 0;
2518 c
->Request
.CDB
[0] = BMIC_WRITE
;
2519 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2521 case TEST_UNIT_READY
:
2522 c
->Request
.CDBLen
= 6;
2523 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2524 c
->Request
.Type
.Direction
= XFER_NONE
;
2525 c
->Request
.Timeout
= 0;
2528 dev_warn(&h
->pdev
->dev
, "Unknown Command 0x%c\n", cmd
);
2531 } else if (cmd_type
== TYPE_MSG
) {
2533 case 0: /* ABORT message */
2534 c
->Request
.CDBLen
= 12;
2535 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2536 c
->Request
.Type
.Direction
= XFER_WRITE
;
2537 c
->Request
.Timeout
= 0;
2538 c
->Request
.CDB
[0] = cmd
; /* abort */
2539 c
->Request
.CDB
[1] = 0; /* abort a command */
2540 /* buff contains the tag of the command to abort */
2541 memcpy(&c
->Request
.CDB
[4], buff
, 8);
2543 case 1: /* RESET message */
2544 c
->Request
.CDBLen
= 16;
2545 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2546 c
->Request
.Type
.Direction
= XFER_NONE
;
2547 c
->Request
.Timeout
= 0;
2548 memset(&c
->Request
.CDB
[0], 0, sizeof(c
->Request
.CDB
));
2549 c
->Request
.CDB
[0] = cmd
; /* reset */
2550 c
->Request
.CDB
[1] = 0x03; /* reset a target */
2552 case 3: /* No-Op message */
2553 c
->Request
.CDBLen
= 1;
2554 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2555 c
->Request
.Type
.Direction
= XFER_WRITE
;
2556 c
->Request
.Timeout
= 0;
2557 c
->Request
.CDB
[0] = cmd
;
2560 dev_warn(&h
->pdev
->dev
,
2561 "unknown message type %d\n", cmd
);
2565 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2568 /* Fill in the scatter gather information */
2570 buff_dma_handle
.val
= (__u64
) pci_map_single(h
->pdev
,
2572 PCI_DMA_BIDIRECTIONAL
);
2573 c
->SG
[0].Addr
.lower
= buff_dma_handle
.val32
.lower
;
2574 c
->SG
[0].Addr
.upper
= buff_dma_handle
.val32
.upper
;
2575 c
->SG
[0].Len
= size
;
2576 c
->SG
[0].Ext
= 0; /* we are not chaining */
2581 static int check_target_status(ctlr_info_t
*h
, CommandList_struct
*c
)
2583 switch (c
->err_info
->ScsiStatus
) {
2586 case SAM_STAT_CHECK_CONDITION
:
2587 switch (0xf & c
->err_info
->SenseInfo
[2]) {
2588 case 0: return IO_OK
; /* no sense */
2589 case 1: return IO_OK
; /* recovered error */
2591 if (check_for_unit_attention(h
, c
))
2592 return IO_NEEDS_RETRY
;
2593 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x "
2594 "check condition, sense key = 0x%02x\n",
2595 c
->Request
.CDB
[0], c
->err_info
->SenseInfo
[2]);
2599 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x"
2600 "scsi status = 0x%02x\n",
2601 c
->Request
.CDB
[0], c
->err_info
->ScsiStatus
);
2607 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
)
2609 int return_status
= IO_OK
;
2611 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2614 switch (c
->err_info
->CommandStatus
) {
2615 case CMD_TARGET_STATUS
:
2616 return_status
= check_target_status(h
, c
);
2618 case CMD_DATA_UNDERRUN
:
2619 case CMD_DATA_OVERRUN
:
2620 /* expected for inquiry and report lun commands */
2623 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x is "
2624 "reported invalid\n", c
->Request
.CDB
[0]);
2625 return_status
= IO_ERROR
;
2627 case CMD_PROTOCOL_ERR
:
2628 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x has "
2629 "protocol error\n", c
->Request
.CDB
[0]);
2630 return_status
= IO_ERROR
;
2632 case CMD_HARDWARE_ERR
:
2633 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2634 " hardware error\n", c
->Request
.CDB
[0]);
2635 return_status
= IO_ERROR
;
2637 case CMD_CONNECTION_LOST
:
2638 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2639 "connection lost\n", c
->Request
.CDB
[0]);
2640 return_status
= IO_ERROR
;
2643 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x was "
2644 "aborted\n", c
->Request
.CDB
[0]);
2645 return_status
= IO_ERROR
;
2647 case CMD_ABORT_FAILED
:
2648 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x reports "
2649 "abort failed\n", c
->Request
.CDB
[0]);
2650 return_status
= IO_ERROR
;
2652 case CMD_UNSOLICITED_ABORT
:
2653 dev_warn(&h
->pdev
->dev
, "unsolicited abort 0x%02x\n",
2655 return_status
= IO_NEEDS_RETRY
;
2658 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x returned "
2659 "unknown status %x\n", c
->Request
.CDB
[0],
2660 c
->err_info
->CommandStatus
);
2661 return_status
= IO_ERROR
;
2663 return return_status
;
2666 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
2669 DECLARE_COMPLETION_ONSTACK(wait
);
2670 u64bit buff_dma_handle
;
2671 int return_status
= IO_OK
;
2675 enqueue_cmd_and_start_io(h
, c
);
2677 wait_for_completion(&wait
);
2679 if (c
->err_info
->CommandStatus
== 0 || !attempt_retry
)
2682 return_status
= process_sendcmd_error(h
, c
);
2684 if (return_status
== IO_NEEDS_RETRY
&&
2685 c
->retry_count
< MAX_CMD_RETRIES
) {
2686 dev_warn(&h
->pdev
->dev
, "retrying 0x%02x\n",
2689 /* erase the old error information */
2690 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
2691 return_status
= IO_OK
;
2692 INIT_COMPLETION(wait
);
2697 /* unlock the buffers from DMA */
2698 buff_dma_handle
.val32
.lower
= c
->SG
[0].Addr
.lower
;
2699 buff_dma_handle
.val32
.upper
= c
->SG
[0].Addr
.upper
;
2700 pci_unmap_single(h
->pdev
, (dma_addr_t
) buff_dma_handle
.val
,
2701 c
->SG
[0].Len
, PCI_DMA_BIDIRECTIONAL
);
2702 return return_status
;
2705 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
2706 __u8 page_code
, unsigned char scsi3addr
[],
2709 CommandList_struct
*c
;
2712 c
= cmd_special_alloc(h
);
2715 return_status
= fill_cmd(h
, c
, cmd
, buff
, size
, page_code
,
2716 scsi3addr
, cmd_type
);
2717 if (return_status
== IO_OK
)
2718 return_status
= sendcmd_withirq_core(h
, c
, 1);
2720 cmd_special_free(h
, c
);
2721 return return_status
;
2724 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
2725 sector_t total_size
,
2726 unsigned int block_size
,
2727 InquiryData_struct
*inq_buff
,
2728 drive_info_struct
*drv
)
2732 unsigned char scsi3addr
[8];
2734 memset(inq_buff
, 0, sizeof(InquiryData_struct
));
2735 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2736 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
2737 sizeof(*inq_buff
), 0xC1, scsi3addr
, TYPE_CMD
);
2738 if (return_code
== IO_OK
) {
2739 if (inq_buff
->data_byte
[8] == 0xFF) {
2740 dev_warn(&h
->pdev
->dev
,
2741 "reading geometry failed, volume "
2742 "does not support reading geometry\n");
2744 drv
->sectors
= 32; /* Sectors per track */
2745 drv
->cylinders
= total_size
+ 1;
2746 drv
->raid_level
= RAID_UNKNOWN
;
2748 drv
->heads
= inq_buff
->data_byte
[6];
2749 drv
->sectors
= inq_buff
->data_byte
[7];
2750 drv
->cylinders
= (inq_buff
->data_byte
[4] & 0xff) << 8;
2751 drv
->cylinders
+= inq_buff
->data_byte
[5];
2752 drv
->raid_level
= inq_buff
->data_byte
[8];
2754 drv
->block_size
= block_size
;
2755 drv
->nr_blocks
= total_size
+ 1;
2756 t
= drv
->heads
* drv
->sectors
;
2758 sector_t real_size
= total_size
+ 1;
2759 unsigned long rem
= sector_div(real_size
, t
);
2762 drv
->cylinders
= real_size
;
2764 } else { /* Get geometry failed */
2765 dev_warn(&h
->pdev
->dev
, "reading geometry failed\n");
2770 cciss_read_capacity(ctlr_info_t
*h
, int logvol
, sector_t
*total_size
,
2771 unsigned int *block_size
)
2773 ReadCapdata_struct
*buf
;
2775 unsigned char scsi3addr
[8];
2777 buf
= kzalloc(sizeof(ReadCapdata_struct
), GFP_KERNEL
);
2779 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2783 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2784 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY
, buf
,
2785 sizeof(ReadCapdata_struct
), 0, scsi3addr
, TYPE_CMD
);
2786 if (return_code
== IO_OK
) {
2787 *total_size
= be32_to_cpu(*(__be32
*) buf
->total_size
);
2788 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2789 } else { /* read capacity command failed */
2790 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2792 *block_size
= BLOCK_SIZE
;
2797 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
2798 sector_t
*total_size
, unsigned int *block_size
)
2800 ReadCapdata_struct_16
*buf
;
2802 unsigned char scsi3addr
[8];
2804 buf
= kzalloc(sizeof(ReadCapdata_struct_16
), GFP_KERNEL
);
2806 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2810 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2811 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY_16
,
2812 buf
, sizeof(ReadCapdata_struct_16
),
2813 0, scsi3addr
, TYPE_CMD
);
2814 if (return_code
== IO_OK
) {
2815 *total_size
= be64_to_cpu(*(__be64
*) buf
->total_size
);
2816 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2817 } else { /* read capacity command failed */
2818 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2820 *block_size
= BLOCK_SIZE
;
2822 dev_info(&h
->pdev
->dev
, " blocks= %llu block_size= %d\n",
2823 (unsigned long long)*total_size
+1, *block_size
);
2827 static int cciss_revalidate(struct gendisk
*disk
)
2829 ctlr_info_t
*h
= get_host(disk
);
2830 drive_info_struct
*drv
= get_drv(disk
);
2833 unsigned int block_size
;
2834 sector_t total_size
;
2835 InquiryData_struct
*inq_buff
= NULL
;
2837 for (logvol
= 0; logvol
< CISS_MAX_LUN
; logvol
++) {
2838 if (memcmp(h
->drv
[logvol
]->LunID
, drv
->LunID
,
2839 sizeof(drv
->LunID
)) == 0) {
2848 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
2849 if (inq_buff
== NULL
) {
2850 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2853 if (h
->cciss_read
== CCISS_READ_10
) {
2854 cciss_read_capacity(h
, logvol
,
2855 &total_size
, &block_size
);
2857 cciss_read_capacity_16(h
, logvol
,
2858 &total_size
, &block_size
);
2860 cciss_geometry_inquiry(h
, logvol
, total_size
, block_size
,
2863 blk_queue_logical_block_size(drv
->queue
, drv
->block_size
);
2864 set_capacity(disk
, drv
->nr_blocks
);
2871 * Map (physical) PCI mem into (virtual) kernel space
2873 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
2875 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
2876 ulong page_offs
= ((ulong
) base
) - page_base
;
2877 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
2879 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
2883 * Takes jobs of the Q and sends them to the hardware, then puts it on
2884 * the Q to wait for completion.
2886 static void start_io(ctlr_info_t
*h
)
2888 CommandList_struct
*c
;
2890 while (!hlist_empty(&h
->reqQ
)) {
2891 c
= hlist_entry(h
->reqQ
.first
, CommandList_struct
, list
);
2892 /* can't do anything if fifo is full */
2893 if ((h
->access
.fifo_full(h
))) {
2894 dev_warn(&h
->pdev
->dev
, "fifo full\n");
2898 /* Get the first entry from the Request Q */
2902 /* Tell the controller execute command */
2903 h
->access
.submit_command(h
, c
);
2905 /* Put job onto the completed Q */
2910 /* Assumes that h->lock is held. */
2911 /* Zeros out the error record and then resends the command back */
2912 /* to the controller */
2913 static inline void resend_cciss_cmd(ctlr_info_t
*h
, CommandList_struct
*c
)
2915 /* erase the old error information */
2916 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
2918 /* add it to software queue and then send it to the controller */
2921 if (h
->Qdepth
> h
->maxQsinceinit
)
2922 h
->maxQsinceinit
= h
->Qdepth
;
2927 static inline unsigned int make_status_bytes(unsigned int scsi_status_byte
,
2928 unsigned int msg_byte
, unsigned int host_byte
,
2929 unsigned int driver_byte
)
2931 /* inverse of macros in scsi.h */
2932 return (scsi_status_byte
& 0xff) |
2933 ((msg_byte
& 0xff) << 8) |
2934 ((host_byte
& 0xff) << 16) |
2935 ((driver_byte
& 0xff) << 24);
2938 static inline int evaluate_target_status(ctlr_info_t
*h
,
2939 CommandList_struct
*cmd
, int *retry_cmd
)
2941 unsigned char sense_key
;
2942 unsigned char status_byte
, msg_byte
, host_byte
, driver_byte
;
2946 /* If we get in here, it means we got "target status", that is, scsi status */
2947 status_byte
= cmd
->err_info
->ScsiStatus
;
2948 driver_byte
= DRIVER_OK
;
2949 msg_byte
= cmd
->err_info
->CommandStatus
; /* correct? seems too device specific */
2951 if (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
2952 host_byte
= DID_PASSTHROUGH
;
2956 error_value
= make_status_bytes(status_byte
, msg_byte
,
2957 host_byte
, driver_byte
);
2959 if (cmd
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
) {
2960 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
)
2961 dev_warn(&h
->pdev
->dev
, "cmd %p "
2962 "has SCSI Status 0x%x\n",
2963 cmd
, cmd
->err_info
->ScsiStatus
);
2967 /* check the sense key */
2968 sense_key
= 0xf & cmd
->err_info
->SenseInfo
[2];
2969 /* no status or recovered error */
2970 if (((sense_key
== 0x0) || (sense_key
== 0x1)) &&
2971 (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
))
2974 if (check_for_unit_attention(h
, cmd
)) {
2975 *retry_cmd
= !(cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
);
2979 /* Not SG_IO or similar? */
2980 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
) {
2981 if (error_value
!= 0)
2982 dev_warn(&h
->pdev
->dev
, "cmd %p has CHECK CONDITION"
2983 " sense key = 0x%x\n", cmd
, sense_key
);
2987 /* SG_IO or similar, copy sense data back */
2988 if (cmd
->rq
->sense
) {
2989 if (cmd
->rq
->sense_len
> cmd
->err_info
->SenseLen
)
2990 cmd
->rq
->sense_len
= cmd
->err_info
->SenseLen
;
2991 memcpy(cmd
->rq
->sense
, cmd
->err_info
->SenseInfo
,
2992 cmd
->rq
->sense_len
);
2994 cmd
->rq
->sense_len
= 0;
2999 /* checks the status of the job and calls complete buffers to mark all
3000 * buffers for the completed job. Note that this function does not need
3001 * to hold the hba/queue lock.
3003 static inline void complete_command(ctlr_info_t
*h
, CommandList_struct
*cmd
,
3007 struct request
*rq
= cmd
->rq
;
3012 rq
->errors
= make_status_bytes(0, 0, 0, DRIVER_TIMEOUT
);
3014 if (cmd
->err_info
->CommandStatus
== 0) /* no error has occurred */
3015 goto after_error_processing
;
3017 switch (cmd
->err_info
->CommandStatus
) {
3018 case CMD_TARGET_STATUS
:
3019 rq
->errors
= evaluate_target_status(h
, cmd
, &retry_cmd
);
3021 case CMD_DATA_UNDERRUN
:
3022 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
) {
3023 dev_warn(&h
->pdev
->dev
, "cmd %p has"
3024 " completed with data underrun "
3026 cmd
->rq
->resid_len
= cmd
->err_info
->ResidualCnt
;
3029 case CMD_DATA_OVERRUN
:
3030 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
)
3031 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has"
3032 " completed with data overrun "
3036 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p is "
3037 "reported invalid\n", cmd
);
3038 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3039 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3040 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3041 DID_PASSTHROUGH
: DID_ERROR
);
3043 case CMD_PROTOCOL_ERR
:
3044 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has "
3045 "protocol error\n", cmd
);
3046 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3047 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3048 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3049 DID_PASSTHROUGH
: DID_ERROR
);
3051 case CMD_HARDWARE_ERR
:
3052 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3053 " hardware error\n", cmd
);
3054 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3055 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3056 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3057 DID_PASSTHROUGH
: DID_ERROR
);
3059 case CMD_CONNECTION_LOST
:
3060 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3061 "connection lost\n", cmd
);
3062 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3063 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3064 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3065 DID_PASSTHROUGH
: DID_ERROR
);
3068 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p was "
3070 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3071 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3072 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3073 DID_PASSTHROUGH
: DID_ABORT
);
3075 case CMD_ABORT_FAILED
:
3076 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p reports "
3077 "abort failed\n", cmd
);
3078 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3079 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3080 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3081 DID_PASSTHROUGH
: DID_ERROR
);
3083 case CMD_UNSOLICITED_ABORT
:
3084 dev_warn(&h
->pdev
->dev
, "cciss%d: unsolicited "
3085 "abort %p\n", h
->ctlr
, cmd
);
3086 if (cmd
->retry_count
< MAX_CMD_RETRIES
) {
3088 dev_warn(&h
->pdev
->dev
, "retrying %p\n", cmd
);
3091 dev_warn(&h
->pdev
->dev
,
3092 "%p retried too many times\n", cmd
);
3093 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3094 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3095 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3096 DID_PASSTHROUGH
: DID_ABORT
);
3099 dev_warn(&h
->pdev
->dev
, "cmd %p timedout\n", cmd
);
3100 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3101 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3102 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3103 DID_PASSTHROUGH
: DID_ERROR
);
3106 dev_warn(&h
->pdev
->dev
, "cmd %p returned "
3107 "unknown status %x\n", cmd
,
3108 cmd
->err_info
->CommandStatus
);
3109 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3110 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3111 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3112 DID_PASSTHROUGH
: DID_ERROR
);
3115 after_error_processing
:
3117 /* We need to return this command */
3119 resend_cciss_cmd(h
, cmd
);
3122 cmd
->rq
->completion_data
= cmd
;
3123 blk_complete_request(cmd
->rq
);
3126 static inline u32
cciss_tag_contains_index(u32 tag
)
3128 #define DIRECT_LOOKUP_BIT 0x10
3129 return tag
& DIRECT_LOOKUP_BIT
;
3132 static inline u32
cciss_tag_to_index(u32 tag
)
3134 #define DIRECT_LOOKUP_SHIFT 5
3135 return tag
>> DIRECT_LOOKUP_SHIFT
;
3138 static inline u32
cciss_tag_discard_error_bits(u32 tag
)
3140 #define CCISS_ERROR_BITS 0x03
3141 return tag
& ~CCISS_ERROR_BITS
;
3144 static inline void cciss_mark_tag_indexed(u32
*tag
)
3146 *tag
|= DIRECT_LOOKUP_BIT
;
3149 static inline void cciss_set_tag_index(u32
*tag
, u32 index
)
3151 *tag
|= (index
<< DIRECT_LOOKUP_SHIFT
);
3155 * Get a request and submit it to the controller.
3157 static void do_cciss_request(struct request_queue
*q
)
3159 ctlr_info_t
*h
= q
->queuedata
;
3160 CommandList_struct
*c
;
3163 struct request
*creq
;
3165 struct scatterlist
*tmp_sg
;
3166 SGDescriptor_struct
*curr_sg
;
3167 drive_info_struct
*drv
;
3172 /* We call start_io here in case there is a command waiting on the
3173 * queue that has not been sent.
3175 if (blk_queue_plugged(q
))
3179 creq
= blk_peek_request(q
);
3183 BUG_ON(creq
->nr_phys_segments
> h
->maxsgentries
);
3189 blk_start_request(creq
);
3191 tmp_sg
= h
->scatter_list
[c
->cmdindex
];
3192 spin_unlock_irq(q
->queue_lock
);
3194 c
->cmd_type
= CMD_RWREQ
;
3197 /* fill in the request */
3198 drv
= creq
->rq_disk
->private_data
;
3199 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
3200 /* got command from pool, so use the command block index instead */
3201 /* for direct lookups. */
3202 /* The first 2 bits are reserved for controller error reporting. */
3203 cciss_set_tag_index(&c
->Header
.Tag
.lower
, c
->cmdindex
);
3204 cciss_mark_tag_indexed(&c
->Header
.Tag
.lower
);
3205 memcpy(&c
->Header
.LUN
, drv
->LunID
, sizeof(drv
->LunID
));
3206 c
->Request
.CDBLen
= 10; /* 12 byte commands not in FW yet; */
3207 c
->Request
.Type
.Type
= TYPE_CMD
; /* It is a command. */
3208 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3209 c
->Request
.Type
.Direction
=
3210 (rq_data_dir(creq
) == READ
) ? XFER_READ
: XFER_WRITE
;
3211 c
->Request
.Timeout
= 0; /* Don't time out */
3213 (rq_data_dir(creq
) == READ
) ? h
->cciss_read
: h
->cciss_write
;
3214 start_blk
= blk_rq_pos(creq
);
3215 dev_dbg(&h
->pdev
->dev
, "sector =%d nr_sectors=%d\n",
3216 (int)blk_rq_pos(creq
), (int)blk_rq_sectors(creq
));
3217 sg_init_table(tmp_sg
, h
->maxsgentries
);
3218 seg
= blk_rq_map_sg(q
, creq
, tmp_sg
);
3220 /* get the DMA records for the setup */
3221 if (c
->Request
.Type
.Direction
== XFER_READ
)
3222 dir
= PCI_DMA_FROMDEVICE
;
3224 dir
= PCI_DMA_TODEVICE
;
3230 for (i
= 0; i
< seg
; i
++) {
3231 if (((sg_index
+1) == (h
->max_cmd_sgentries
)) &&
3232 !chained
&& ((seg
- i
) > 1)) {
3233 /* Point to next chain block. */
3234 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
3238 curr_sg
[sg_index
].Len
= tmp_sg
[i
].length
;
3239 temp64
.val
= (__u64
) pci_map_page(h
->pdev
, sg_page(&tmp_sg
[i
]),
3241 tmp_sg
[i
].length
, dir
);
3242 curr_sg
[sg_index
].Addr
.lower
= temp64
.val32
.lower
;
3243 curr_sg
[sg_index
].Addr
.upper
= temp64
.val32
.upper
;
3244 curr_sg
[sg_index
].Ext
= 0; /* we are not chaining */
3248 cciss_map_sg_chain_block(h
, c
, h
->cmd_sg_list
[c
->cmdindex
],
3249 (seg
- (h
->max_cmd_sgentries
- 1)) *
3250 sizeof(SGDescriptor_struct
));
3252 /* track how many SG entries we are using */
3256 dev_dbg(&h
->pdev
->dev
, "Submitting %u sectors in %d segments "
3258 blk_rq_sectors(creq
), seg
, chained
);
3260 c
->Header
.SGTotal
= seg
+ chained
;
3261 if (seg
<= h
->max_cmd_sgentries
)
3262 c
->Header
.SGList
= c
->Header
.SGTotal
;
3264 c
->Header
.SGList
= h
->max_cmd_sgentries
;
3265 set_performant_mode(h
, c
);
3267 if (likely(creq
->cmd_type
== REQ_TYPE_FS
)) {
3268 if(h
->cciss_read
== CCISS_READ_10
) {
3269 c
->Request
.CDB
[1] = 0;
3270 c
->Request
.CDB
[2] = (start_blk
>> 24) & 0xff; /* MSB */
3271 c
->Request
.CDB
[3] = (start_blk
>> 16) & 0xff;
3272 c
->Request
.CDB
[4] = (start_blk
>> 8) & 0xff;
3273 c
->Request
.CDB
[5] = start_blk
& 0xff;
3274 c
->Request
.CDB
[6] = 0; /* (sect >> 24) & 0xff; MSB */
3275 c
->Request
.CDB
[7] = (blk_rq_sectors(creq
) >> 8) & 0xff;
3276 c
->Request
.CDB
[8] = blk_rq_sectors(creq
) & 0xff;
3277 c
->Request
.CDB
[9] = c
->Request
.CDB
[11] = c
->Request
.CDB
[12] = 0;
3279 u32 upper32
= upper_32_bits(start_blk
);
3281 c
->Request
.CDBLen
= 16;
3282 c
->Request
.CDB
[1]= 0;
3283 c
->Request
.CDB
[2]= (upper32
>> 24) & 0xff; /* MSB */
3284 c
->Request
.CDB
[3]= (upper32
>> 16) & 0xff;
3285 c
->Request
.CDB
[4]= (upper32
>> 8) & 0xff;
3286 c
->Request
.CDB
[5]= upper32
& 0xff;
3287 c
->Request
.CDB
[6]= (start_blk
>> 24) & 0xff;
3288 c
->Request
.CDB
[7]= (start_blk
>> 16) & 0xff;
3289 c
->Request
.CDB
[8]= (start_blk
>> 8) & 0xff;
3290 c
->Request
.CDB
[9]= start_blk
& 0xff;
3291 c
->Request
.CDB
[10]= (blk_rq_sectors(creq
) >> 24) & 0xff;
3292 c
->Request
.CDB
[11]= (blk_rq_sectors(creq
) >> 16) & 0xff;
3293 c
->Request
.CDB
[12]= (blk_rq_sectors(creq
) >> 8) & 0xff;
3294 c
->Request
.CDB
[13]= blk_rq_sectors(creq
) & 0xff;
3295 c
->Request
.CDB
[14] = c
->Request
.CDB
[15] = 0;
3297 } else if (creq
->cmd_type
== REQ_TYPE_BLOCK_PC
) {
3298 c
->Request
.CDBLen
= creq
->cmd_len
;
3299 memcpy(c
->Request
.CDB
, creq
->cmd
, BLK_MAX_CDB
);
3301 dev_warn(&h
->pdev
->dev
, "bad request type %d\n",
3306 spin_lock_irq(q
->queue_lock
);
3310 if (h
->Qdepth
> h
->maxQsinceinit
)
3311 h
->maxQsinceinit
= h
->Qdepth
;
3317 /* We will already have the driver lock here so not need
3323 static inline unsigned long get_next_completion(ctlr_info_t
*h
)
3325 return h
->access
.command_completed(h
);
3328 static inline int interrupt_pending(ctlr_info_t
*h
)
3330 return h
->access
.intr_pending(h
);
3333 static inline long interrupt_not_for_us(ctlr_info_t
*h
)
3335 return ((h
->access
.intr_pending(h
) == 0) ||
3336 (h
->interrupts_enabled
== 0));
3339 static inline int bad_tag(ctlr_info_t
*h
, u32 tag_index
,
3342 if (unlikely(tag_index
>= h
->nr_cmds
)) {
3343 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
3349 static inline void finish_cmd(ctlr_info_t
*h
, CommandList_struct
*c
,
3353 if (likely(c
->cmd_type
== CMD_RWREQ
))
3354 complete_command(h
, c
, 0);
3355 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3356 complete(c
->waiting
);
3357 #ifdef CONFIG_CISS_SCSI_TAPE
3358 else if (c
->cmd_type
== CMD_SCSI
)
3359 complete_scsi_command(c
, 0, raw_tag
);
3363 static inline u32
next_command(ctlr_info_t
*h
)
3367 if (unlikely(h
->transMethod
!= CFGTBL_Trans_Performant
))
3368 return h
->access
.command_completed(h
);
3370 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
3371 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
3372 (h
->reply_pool_head
)++;
3373 h
->commands_outstanding
--;
3377 /* Check for wraparound */
3378 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
3379 h
->reply_pool_head
= h
->reply_pool
;
3380 h
->reply_pool_wraparound
^= 1;
3385 /* process completion of an indexed ("direct lookup") command */
3386 static inline u32
process_indexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3389 CommandList_struct
*c
;
3391 tag_index
= cciss_tag_to_index(raw_tag
);
3392 if (bad_tag(h
, tag_index
, raw_tag
))
3393 return next_command(h
);
3394 c
= h
->cmd_pool
+ tag_index
;
3395 finish_cmd(h
, c
, raw_tag
);
3396 return next_command(h
);
3399 /* process completion of a non-indexed command */
3400 static inline u32
process_nonindexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3403 CommandList_struct
*c
= NULL
;
3404 struct hlist_node
*tmp
;
3405 __u32 busaddr_masked
, tag_masked
;
3407 tag
= cciss_tag_discard_error_bits(raw_tag
);
3408 hlist_for_each_entry(c
, tmp
, &h
->cmpQ
, list
) {
3409 busaddr_masked
= cciss_tag_discard_error_bits(c
->busaddr
);
3410 tag_masked
= cciss_tag_discard_error_bits(tag
);
3411 if (busaddr_masked
== tag_masked
) {
3412 finish_cmd(h
, c
, raw_tag
);
3413 return next_command(h
);
3416 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3417 return next_command(h
);
3420 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
)
3422 ctlr_info_t
*h
= dev_id
;
3423 unsigned long flags
;
3426 if (interrupt_not_for_us(h
))
3428 spin_lock_irqsave(&h
->lock
, flags
);
3429 while (interrupt_pending(h
)) {
3430 raw_tag
= get_next_completion(h
);
3431 while (raw_tag
!= FIFO_EMPTY
) {
3432 if (cciss_tag_contains_index(raw_tag
))
3433 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3435 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3438 spin_unlock_irqrestore(&h
->lock
, flags
);
3442 /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never
3443 * check the interrupt pending register because it is not set.
3445 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
)
3447 ctlr_info_t
*h
= dev_id
;
3448 unsigned long flags
;
3451 spin_lock_irqsave(&h
->lock
, flags
);
3452 raw_tag
= get_next_completion(h
);
3453 while (raw_tag
!= FIFO_EMPTY
) {
3454 if (cciss_tag_contains_index(raw_tag
))
3455 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3457 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3459 spin_unlock_irqrestore(&h
->lock
, flags
);
3464 * add_to_scan_list() - add controller to rescan queue
3465 * @h: Pointer to the controller.
3467 * Adds the controller to the rescan queue if not already on the queue.
3469 * returns 1 if added to the queue, 0 if skipped (could be on the
3470 * queue already, or the controller could be initializing or shutting
3473 static int add_to_scan_list(struct ctlr_info
*h
)
3475 struct ctlr_info
*test_h
;
3479 if (h
->busy_initializing
)
3482 if (!mutex_trylock(&h
->busy_shutting_down
))
3485 mutex_lock(&scan_mutex
);
3486 list_for_each_entry(test_h
, &scan_q
, scan_list
) {
3492 if (!found
&& !h
->busy_scanning
) {
3493 INIT_COMPLETION(h
->scan_wait
);
3494 list_add_tail(&h
->scan_list
, &scan_q
);
3497 mutex_unlock(&scan_mutex
);
3498 mutex_unlock(&h
->busy_shutting_down
);
3504 * remove_from_scan_list() - remove controller from rescan queue
3505 * @h: Pointer to the controller.
3507 * Removes the controller from the rescan queue if present. Blocks if
3508 * the controller is currently conducting a rescan. The controller
3509 * can be in one of three states:
3510 * 1. Doesn't need a scan
3511 * 2. On the scan list, but not scanning yet (we remove it)
3512 * 3. Busy scanning (and not on the list). In this case we want to wait for
3513 * the scan to complete to make sure the scanning thread for this
3514 * controller is completely idle.
3516 static void remove_from_scan_list(struct ctlr_info
*h
)
3518 struct ctlr_info
*test_h
, *tmp_h
;
3520 mutex_lock(&scan_mutex
);
3521 list_for_each_entry_safe(test_h
, tmp_h
, &scan_q
, scan_list
) {
3522 if (test_h
== h
) { /* state 2. */
3523 list_del(&h
->scan_list
);
3524 complete_all(&h
->scan_wait
);
3525 mutex_unlock(&scan_mutex
);
3529 if (h
->busy_scanning
) { /* state 3. */
3530 mutex_unlock(&scan_mutex
);
3531 wait_for_completion(&h
->scan_wait
);
3532 } else { /* state 1, nothing to do. */
3533 mutex_unlock(&scan_mutex
);
3538 * scan_thread() - kernel thread used to rescan controllers
3541 * A kernel thread used scan for drive topology changes on
3542 * controllers. The thread processes only one controller at a time
3543 * using a queue. Controllers are added to the queue using
3544 * add_to_scan_list() and removed from the queue either after done
3545 * processing or using remove_from_scan_list().
3549 static int scan_thread(void *data
)
3551 struct ctlr_info
*h
;
3554 set_current_state(TASK_INTERRUPTIBLE
);
3556 if (kthread_should_stop())
3560 mutex_lock(&scan_mutex
);
3561 if (list_empty(&scan_q
)) {
3562 mutex_unlock(&scan_mutex
);
3566 h
= list_entry(scan_q
.next
,
3569 list_del(&h
->scan_list
);
3570 h
->busy_scanning
= 1;
3571 mutex_unlock(&scan_mutex
);
3573 rebuild_lun_table(h
, 0, 0);
3574 complete_all(&h
->scan_wait
);
3575 mutex_lock(&scan_mutex
);
3576 h
->busy_scanning
= 0;
3577 mutex_unlock(&scan_mutex
);
3584 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
3586 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
3589 switch (c
->err_info
->SenseInfo
[12]) {
3591 dev_warn(&h
->pdev
->dev
, "a state change "
3592 "detected, command retried\n");
3596 dev_warn(&h
->pdev
->dev
, "LUN failure "
3597 "detected, action required\n");
3600 case REPORT_LUNS_CHANGED
:
3601 dev_warn(&h
->pdev
->dev
, "report LUN data changed\n");
3603 * Here, we could call add_to_scan_list and wake up the scan thread,
3604 * except that it's quite likely that we will get more than one
3605 * REPORT_LUNS_CHANGED condition in quick succession, which means
3606 * that those which occur after the first one will likely happen
3607 * *during* the scan_thread's rescan. And the rescan code is not
3608 * robust enough to restart in the middle, undoing what it has already
3609 * done, and it's not clear that it's even possible to do this, since
3610 * part of what it does is notify the block layer, which starts
3611 * doing it's own i/o to read partition tables and so on, and the
3612 * driver doesn't have visibility to know what might need undoing.
3613 * In any event, if possible, it is horribly complicated to get right
3614 * so we just don't do it for now.
3616 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
3620 case POWER_OR_RESET
:
3621 dev_warn(&h
->pdev
->dev
,
3622 "a power on or device reset detected\n");
3625 case UNIT_ATTENTION_CLEARED
:
3626 dev_warn(&h
->pdev
->dev
,
3627 "unit attention cleared by another initiator\n");
3631 dev_warn(&h
->pdev
->dev
, "unknown unit attention detected\n");
3637 * We cannot read the structure directly, for portability we must use
3639 * This is for debug only.
3641 static void print_cfg_table(ctlr_info_t
*h
)
3645 CfgTable_struct
*tb
= h
->cfgtable
;
3647 dev_dbg(&h
->pdev
->dev
, "Controller Configuration information\n");
3648 dev_dbg(&h
->pdev
->dev
, "------------------------------------\n");
3649 for (i
= 0; i
< 4; i
++)
3650 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3651 temp_name
[4] = '\0';
3652 dev_dbg(&h
->pdev
->dev
, " Signature = %s\n", temp_name
);
3653 dev_dbg(&h
->pdev
->dev
, " Spec Number = %d\n",
3654 readl(&(tb
->SpecValence
)));
3655 dev_dbg(&h
->pdev
->dev
, " Transport methods supported = 0x%x\n",
3656 readl(&(tb
->TransportSupport
)));
3657 dev_dbg(&h
->pdev
->dev
, " Transport methods active = 0x%x\n",
3658 readl(&(tb
->TransportActive
)));
3659 dev_dbg(&h
->pdev
->dev
, " Requested transport Method = 0x%x\n",
3660 readl(&(tb
->HostWrite
.TransportRequest
)));
3661 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Delay = 0x%x\n",
3662 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3663 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Count = 0x%x\n",
3664 readl(&(tb
->HostWrite
.CoalIntCount
)));
3665 dev_dbg(&h
->pdev
->dev
, " Max outstanding commands = 0x%d\n",
3666 readl(&(tb
->CmdsOutMax
)));
3667 dev_dbg(&h
->pdev
->dev
, " Bus Types = 0x%x\n",
3668 readl(&(tb
->BusTypes
)));
3669 for (i
= 0; i
< 16; i
++)
3670 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3671 temp_name
[16] = '\0';
3672 dev_dbg(&h
->pdev
->dev
, " Server Name = %s\n", temp_name
);
3673 dev_dbg(&h
->pdev
->dev
, " Heartbeat Counter = 0x%x\n\n\n",
3674 readl(&(tb
->HeartBeat
)));
3677 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3679 int i
, offset
, mem_type
, bar_type
;
3680 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3683 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3684 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3685 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3688 mem_type
= pci_resource_flags(pdev
, i
) &
3689 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3691 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3692 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3693 offset
+= 4; /* 32 bit */
3695 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3698 default: /* reserved in PCI 2.2 */
3699 dev_warn(&pdev
->dev
,
3700 "Base address is invalid\n");
3705 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3711 /* Fill in bucket_map[], given nsgs (the max number of
3712 * scatter gather elements supported) and bucket[],
3713 * which is an array of 8 integers. The bucket[] array
3714 * contains 8 different DMA transfer sizes (in 16
3715 * byte increments) which the controller uses to fetch
3716 * commands. This function fills in bucket_map[], which
3717 * maps a given number of scatter gather elements to one of
3718 * the 8 DMA transfer sizes. The point of it is to allow the
3719 * controller to only do as much DMA as needed to fetch the
3720 * command, with the DMA transfer size encoded in the lower
3721 * bits of the command address.
3723 static void calc_bucket_map(int bucket
[], int num_buckets
,
3724 int nsgs
, int *bucket_map
)
3728 /* even a command with 0 SGs requires 4 blocks */
3729 #define MINIMUM_TRANSFER_BLOCKS 4
3730 #define NUM_BUCKETS 8
3731 /* Note, bucket_map must have nsgs+1 entries. */
3732 for (i
= 0; i
<= nsgs
; i
++) {
3733 /* Compute size of a command with i SG entries */
3734 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
3735 b
= num_buckets
; /* Assume the biggest bucket */
3736 /* Find the bucket that is just big enough */
3737 for (j
= 0; j
< 8; j
++) {
3738 if (bucket
[j
] >= size
) {
3743 /* for a command with i SG entries, use bucket b. */
3748 static void __devinit
cciss_wait_for_mode_change_ack(ctlr_info_t
*h
)
3752 /* under certain very rare conditions, this can take awhile.
3753 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3754 * as we enter this code.) */
3755 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3756 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
3758 usleep_range(10000, 20000);
3762 static __devinit
void cciss_enter_performant_mode(ctlr_info_t
*h
)
3764 /* This is a bit complicated. There are 8 registers on
3765 * the controller which we write to to tell it 8 different
3766 * sizes of commands which there may be. It's a way of
3767 * reducing the DMA done to fetch each command. Encoded into
3768 * each command's tag are 3 bits which communicate to the controller
3769 * which of the eight sizes that command fits within. The size of
3770 * each command depends on how many scatter gather entries there are.
3771 * Each SG entry requires 16 bytes. The eight registers are programmed
3772 * with the number of 16-byte blocks a command of that size requires.
3773 * The smallest command possible requires 5 such 16 byte blocks.
3774 * the largest command possible requires MAXSGENTRIES + 4 16-byte
3775 * blocks. Note, this only extends to the SG entries contained
3776 * within the command block, and does not extend to chained blocks
3777 * of SG elements. bft[] contains the eight values we write to
3778 * the registers. They are not evenly distributed, but have more
3779 * sizes for small commands, and fewer sizes for larger commands.
3782 int bft
[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES
+ 4};
3784 * 5 = 1 s/g entry or 4k
3785 * 6 = 2 s/g entry or 8k
3786 * 8 = 4 s/g entry or 16k
3787 * 10 = 6 s/g entry or 24k
3789 unsigned long register_value
;
3790 BUILD_BUG_ON(28 > MAXSGENTRIES
+ 4);
3792 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
3794 /* Controller spec: zero out this buffer. */
3795 memset(h
->reply_pool
, 0, h
->max_commands
* sizeof(__u64
));
3796 h
->reply_pool_head
= h
->reply_pool
;
3798 trans_offset
= readl(&(h
->cfgtable
->TransMethodOffset
));
3799 calc_bucket_map(bft
, ARRAY_SIZE(bft
), h
->maxsgentries
,
3800 h
->blockFetchTable
);
3801 writel(bft
[0], &h
->transtable
->BlockFetch0
);
3802 writel(bft
[1], &h
->transtable
->BlockFetch1
);
3803 writel(bft
[2], &h
->transtable
->BlockFetch2
);
3804 writel(bft
[3], &h
->transtable
->BlockFetch3
);
3805 writel(bft
[4], &h
->transtable
->BlockFetch4
);
3806 writel(bft
[5], &h
->transtable
->BlockFetch5
);
3807 writel(bft
[6], &h
->transtable
->BlockFetch6
);
3808 writel(bft
[7], &h
->transtable
->BlockFetch7
);
3810 /* size of controller ring buffer */
3811 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
3812 writel(1, &h
->transtable
->RepQCount
);
3813 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
3814 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
3815 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
3816 writel(0, &h
->transtable
->RepQAddr0High32
);
3817 writel(CFGTBL_Trans_Performant
,
3818 &(h
->cfgtable
->HostWrite
.TransportRequest
));
3820 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3821 cciss_wait_for_mode_change_ack(h
);
3822 register_value
= readl(&(h
->cfgtable
->TransportActive
));
3823 if (!(register_value
& CFGTBL_Trans_Performant
))
3824 dev_warn(&h
->pdev
->dev
, "cciss: unable to get board into"
3825 " performant mode\n");
3828 static void __devinit
cciss_put_controller_into_performant_mode(ctlr_info_t
*h
)
3830 __u32 trans_support
;
3832 dev_dbg(&h
->pdev
->dev
, "Trying to put board into Performant mode\n");
3833 /* Attempt to put controller into performant mode if supported */
3834 /* Does board support performant mode? */
3835 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
3836 if (!(trans_support
& PERFORMANT_MODE
))
3839 dev_dbg(&h
->pdev
->dev
, "Placing controller into performant mode\n");
3840 /* Performant mode demands commands on a 32 byte boundary
3841 * pci_alloc_consistent aligns on page boundarys already.
3842 * Just need to check if divisible by 32
3844 if ((sizeof(CommandList_struct
) % 32) != 0) {
3845 dev_warn(&h
->pdev
->dev
, "%s %d %s\n",
3846 "cciss info: command size[",
3847 (int)sizeof(CommandList_struct
),
3848 "] not divisible by 32, no performant mode..\n");
3852 /* Performant mode ring buffer and supporting data structures */
3853 h
->reply_pool
= (__u64
*)pci_alloc_consistent(
3854 h
->pdev
, h
->max_commands
* sizeof(__u64
),
3855 &(h
->reply_pool_dhandle
));
3857 /* Need a block fetch table for performant mode */
3858 h
->blockFetchTable
= kmalloc(((h
->maxsgentries
+1) *
3859 sizeof(__u32
)), GFP_KERNEL
);
3861 if ((h
->reply_pool
== NULL
) || (h
->blockFetchTable
== NULL
))
3864 cciss_enter_performant_mode(h
);
3866 /* Change the access methods to the performant access methods */
3867 h
->access
= SA5_performant_access
;
3868 h
->transMethod
= CFGTBL_Trans_Performant
;
3872 kfree(h
->blockFetchTable
);
3874 pci_free_consistent(h
->pdev
,
3875 h
->max_commands
* sizeof(__u64
),
3877 h
->reply_pool_dhandle
);
3880 } /* cciss_put_controller_into_performant_mode */
3882 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
3883 * controllers that are capable. If not, we use IO-APIC mode.
3886 static void __devinit
cciss_interrupt_mode(ctlr_info_t
*h
)
3888 #ifdef CONFIG_PCI_MSI
3890 struct msix_entry cciss_msix_entries
[4] = { {0, 0}, {0, 1},
3894 /* Some boards advertise MSI but don't really support it */
3895 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
3896 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
3897 goto default_int_mode
;
3899 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSIX
)) {
3900 err
= pci_enable_msix(h
->pdev
, cciss_msix_entries
, 4);
3902 h
->intr
[0] = cciss_msix_entries
[0].vector
;
3903 h
->intr
[1] = cciss_msix_entries
[1].vector
;
3904 h
->intr
[2] = cciss_msix_entries
[2].vector
;
3905 h
->intr
[3] = cciss_msix_entries
[3].vector
;
3910 dev_warn(&h
->pdev
->dev
,
3911 "only %d MSI-X vectors available\n", err
);
3912 goto default_int_mode
;
3914 dev_warn(&h
->pdev
->dev
,
3915 "MSI-X init failed %d\n", err
);
3916 goto default_int_mode
;
3919 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSI
)) {
3920 if (!pci_enable_msi(h
->pdev
))
3923 dev_warn(&h
->pdev
->dev
, "MSI init failed\n");
3926 #endif /* CONFIG_PCI_MSI */
3927 /* if we get here we're going to use the default interrupt mode */
3928 h
->intr
[PERF_MODE_INT
] = h
->pdev
->irq
;
3932 static int __devinit
cciss_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
3935 u32 subsystem_vendor_id
, subsystem_device_id
;
3937 subsystem_vendor_id
= pdev
->subsystem_vendor
;
3938 subsystem_device_id
= pdev
->subsystem_device
;
3939 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
3940 subsystem_vendor_id
;
3942 for (i
= 0; i
< ARRAY_SIZE(products
); i
++)
3943 if (*board_id
== products
[i
].board_id
)
3945 dev_warn(&pdev
->dev
, "unrecognized board ID: 0x%08x, ignoring.\n",
3950 static inline bool cciss_board_disabled(ctlr_info_t
*h
)
3954 (void) pci_read_config_word(h
->pdev
, PCI_COMMAND
, &command
);
3955 return ((command
& PCI_COMMAND_MEMORY
) == 0);
3958 static int __devinit
cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
3959 unsigned long *memory_bar
)
3963 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
3964 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
3965 /* addressing mode bits already removed */
3966 *memory_bar
= pci_resource_start(pdev
, i
);
3967 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
3971 dev_warn(&pdev
->dev
, "no memory BAR found\n");
3975 static int __devinit
cciss_wait_for_board_state(struct pci_dev
*pdev
,
3976 void __iomem
*vaddr
, int wait_for_ready
)
3977 #define BOARD_READY 1
3978 #define BOARD_NOT_READY 0
3984 iterations
= CCISS_BOARD_READY_ITERATIONS
;
3986 iterations
= CCISS_BOARD_NOT_READY_ITERATIONS
;
3988 for (i
= 0; i
< iterations
; i
++) {
3989 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
3990 if (wait_for_ready
) {
3991 if (scratchpad
== CCISS_FIRMWARE_READY
)
3994 if (scratchpad
!= CCISS_FIRMWARE_READY
)
3997 msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS
);
3999 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
4003 static int __devinit
cciss_find_cfg_addrs(struct pci_dev
*pdev
,
4004 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
4007 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
4008 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
4009 *cfg_base_addr
&= (u32
) 0x0000ffff;
4010 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
4011 if (*cfg_base_addr_index
== -1) {
4012 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index, "
4013 "*cfg_base_addr = 0x%08x\n", *cfg_base_addr
);
4019 static int __devinit
cciss_find_cfgtables(ctlr_info_t
*h
)
4023 u64 cfg_base_addr_index
;
4027 rc
= cciss_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
4028 &cfg_base_addr_index
, &cfg_offset
);
4031 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4032 cfg_base_addr_index
) + cfg_offset
, sizeof(h
->cfgtable
));
4035 /* Find performant mode table. */
4036 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
4037 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4038 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
4039 sizeof(*h
->transtable
));
4045 static void __devinit
cciss_get_max_perf_mode_cmds(struct ctlr_info
*h
)
4047 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
4049 /* Limit commands in memory limited kdump scenario. */
4050 if (reset_devices
&& h
->max_commands
> 32)
4051 h
->max_commands
= 32;
4053 if (h
->max_commands
< 16) {
4054 dev_warn(&h
->pdev
->dev
, "Controller reports "
4055 "max supported commands of %d, an obvious lie. "
4056 "Using 16. Ensure that firmware is up to date.\n",
4058 h
->max_commands
= 16;
4062 /* Interrogate the hardware for some limits:
4063 * max commands, max SG elements without chaining, and with chaining,
4064 * SG chain block size, etc.
4066 static void __devinit
cciss_find_board_params(ctlr_info_t
*h
)
4068 cciss_get_max_perf_mode_cmds(h
);
4069 h
->nr_cmds
= h
->max_commands
- 4; /* Allow room for some ioctls */
4070 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxSGElements
));
4072 * Limit in-command s/g elements to 32 save dma'able memory.
4073 * Howvever spec says if 0, use 31
4075 h
->max_cmd_sgentries
= 31;
4076 if (h
->maxsgentries
> 512) {
4077 h
->max_cmd_sgentries
= 32;
4078 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sgentries
+ 1;
4079 h
->maxsgentries
--; /* save one for chain pointer */
4081 h
->maxsgentries
= 31; /* default to traditional values */
4086 static inline bool CISS_signature_present(ctlr_info_t
*h
)
4088 if ((readb(&h
->cfgtable
->Signature
[0]) != 'C') ||
4089 (readb(&h
->cfgtable
->Signature
[1]) != 'I') ||
4090 (readb(&h
->cfgtable
->Signature
[2]) != 'S') ||
4091 (readb(&h
->cfgtable
->Signature
[3]) != 'S')) {
4092 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
4098 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
4099 static inline void cciss_enable_scsi_prefetch(ctlr_info_t
*h
)
4104 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
4106 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
4110 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
4111 * in a prefetch beyond physical memory.
4113 static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t
*h
)
4118 if (h
->board_id
!= 0x3225103C)
4120 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
4121 dma_prefetch
|= 0x8000;
4122 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
4123 pci_read_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, &dma_refetch
);
4125 pci_write_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, dma_refetch
);
4128 static int __devinit
cciss_pci_init(ctlr_info_t
*h
)
4130 int prod_index
, err
;
4132 prod_index
= cciss_lookup_board_id(h
->pdev
, &h
->board_id
);
4135 h
->product_name
= products
[prod_index
].product_name
;
4136 h
->access
= *(products
[prod_index
].access
);
4138 if (cciss_board_disabled(h
)) {
4139 dev_warn(&h
->pdev
->dev
, "controller appears to be disabled\n");
4142 err
= pci_enable_device(h
->pdev
);
4144 dev_warn(&h
->pdev
->dev
, "Unable to Enable PCI device\n");
4148 err
= pci_request_regions(h
->pdev
, "cciss");
4150 dev_warn(&h
->pdev
->dev
,
4151 "Cannot obtain PCI resources, aborting\n");
4155 dev_dbg(&h
->pdev
->dev
, "irq = %x\n", h
->pdev
->irq
);
4156 dev_dbg(&h
->pdev
->dev
, "board_id = %x\n", h
->board_id
);
4158 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
4159 * else we use the IO-APIC interrupt assigned to us by system ROM.
4161 cciss_interrupt_mode(h
);
4162 err
= cciss_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
4164 goto err_out_free_res
;
4165 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
4168 goto err_out_free_res
;
4170 err
= cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
4172 goto err_out_free_res
;
4173 err
= cciss_find_cfgtables(h
);
4175 goto err_out_free_res
;
4177 cciss_find_board_params(h
);
4179 if (!CISS_signature_present(h
)) {
4181 goto err_out_free_res
;
4183 cciss_enable_scsi_prefetch(h
);
4184 cciss_p600_dma_prefetch_quirk(h
);
4185 cciss_put_controller_into_performant_mode(h
);
4190 * Deliberately omit pci_disable_device(): it does something nasty to
4191 * Smart Array controllers that pci_enable_device does not undo
4194 iounmap(h
->transtable
);
4196 iounmap(h
->cfgtable
);
4199 pci_release_regions(h
->pdev
);
4203 /* Function to find the first free pointer into our hba[] array
4204 * Returns -1 if no free entries are left.
4206 static int alloc_cciss_hba(struct pci_dev
*pdev
)
4210 for (i
= 0; i
< MAX_CTLR
; i
++) {
4214 h
= kzalloc(sizeof(ctlr_info_t
), GFP_KERNEL
);
4221 dev_warn(&pdev
->dev
, "This driver supports a maximum"
4222 " of %d controllers.\n", MAX_CTLR
);
4225 dev_warn(&pdev
->dev
, "out of memory.\n");
4229 static void free_hba(ctlr_info_t
*h
)
4233 hba
[h
->ctlr
] = NULL
;
4234 for (i
= 0; i
< h
->highest_lun
+ 1; i
++)
4235 if (h
->gendisk
[i
] != NULL
)
4236 put_disk(h
->gendisk
[i
]);
4240 /* Send a message CDB to the firmware. */
4241 static __devinit
int cciss_message(struct pci_dev
*pdev
, unsigned char opcode
, unsigned char type
)
4244 CommandListHeader_struct CommandHeader
;
4245 RequestBlock_struct Request
;
4246 ErrDescriptor_struct ErrorDescriptor
;
4248 static const size_t cmd_sz
= sizeof(Command
) + sizeof(ErrorInfo_struct
);
4251 uint32_t paddr32
, tag
;
4252 void __iomem
*vaddr
;
4255 vaddr
= ioremap_nocache(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
4259 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
4260 CCISS commands, so they must be allocated from the lower 4GiB of
4262 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4268 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
4274 /* This must fit, because of the 32-bit consistent DMA mask. Also,
4275 although there's no guarantee, we assume that the address is at
4276 least 4-byte aligned (most likely, it's page-aligned). */
4279 cmd
->CommandHeader
.ReplyQueue
= 0;
4280 cmd
->CommandHeader
.SGList
= 0;
4281 cmd
->CommandHeader
.SGTotal
= 0;
4282 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
4283 cmd
->CommandHeader
.Tag
.upper
= 0;
4284 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
4286 cmd
->Request
.CDBLen
= 16;
4287 cmd
->Request
.Type
.Type
= TYPE_MSG
;
4288 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
4289 cmd
->Request
.Type
.Direction
= XFER_NONE
;
4290 cmd
->Request
.Timeout
= 0; /* Don't time out */
4291 cmd
->Request
.CDB
[0] = opcode
;
4292 cmd
->Request
.CDB
[1] = type
;
4293 memset(&cmd
->Request
.CDB
[2], 0, 14); /* the rest of the CDB is reserved */
4295 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(Command
);
4296 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
4297 cmd
->ErrorDescriptor
.Len
= sizeof(ErrorInfo_struct
);
4299 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
4301 for (i
= 0; i
< 10; i
++) {
4302 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
4303 if ((tag
& ~3) == paddr32
)
4305 schedule_timeout_uninterruptible(HZ
);
4310 /* we leak the DMA buffer here ... no choice since the controller could
4311 still complete the command. */
4314 "controller message %02x:%02x timed out\n",
4319 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
4322 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
4327 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
4332 #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0)
4333 #define cciss_noop(p) cciss_message(p, 3, 0)
4335 static int cciss_controller_hard_reset(struct pci_dev
*pdev
,
4336 void * __iomem vaddr
, bool use_doorbell
)
4342 /* For everything after the P600, the PCI power state method
4343 * of resetting the controller doesn't work, so we have this
4344 * other way using the doorbell register.
4346 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
4347 writel(DOORBELL_CTLR_RESET
, vaddr
+ SA5_DOORBELL
);
4349 } else { /* Try to do it the PCI power state way */
4351 /* Quoting from the Open CISS Specification: "The Power
4352 * Management Control/Status Register (CSR) controls the power
4353 * state of the device. The normal operating state is D0,
4354 * CSR=00h. The software off state is D3, CSR=03h. To reset
4355 * the controller, place the interface device in D3 then to D0,
4356 * this causes a secondary PCI reset which will reset the
4359 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
4362 "cciss_controller_hard_reset: "
4363 "PCI PM not supported\n");
4366 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
4367 /* enter the D3hot power management state */
4368 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
4369 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4371 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4375 /* enter the D0 power management state */
4376 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4378 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4385 /* This does a hard reset of the controller using PCI power management
4386 * states or using the doorbell register. */
4387 static __devinit
int cciss_kdump_hard_reset_controller(struct pci_dev
*pdev
)
4391 u64 cfg_base_addr_index
;
4392 void __iomem
*vaddr
;
4393 unsigned long paddr
;
4394 u32 misc_fw_support
, active_transport
;
4396 CfgTable_struct __iomem
*cfgtable
;
4399 u16 command_register
;
4401 /* For controllers as old a the p600, this is very nearly
4404 * pci_save_state(pci_dev);
4405 * pci_set_power_state(pci_dev, PCI_D3hot);
4406 * pci_set_power_state(pci_dev, PCI_D0);
4407 * pci_restore_state(pci_dev);
4409 * For controllers newer than the P600, the pci power state
4410 * method of resetting doesn't work so we have another way
4411 * using the doorbell register.
4414 /* Exclude 640x boards. These are two pci devices in one slot
4415 * which share a battery backed cache module. One controls the
4416 * cache, the other accesses the cache through the one that controls
4417 * it. If we reset the one controlling the cache, the other will
4418 * likely not be happy. Just forbid resetting this conjoined mess.
4420 cciss_lookup_board_id(pdev
, &board_id
);
4421 if (board_id
== 0x409C0E11 || board_id
== 0x409D0E11) {
4422 dev_warn(&pdev
->dev
, "Cannot reset Smart Array 640x "
4423 "due to shared cache module.");
4427 /* Save the PCI command register */
4428 pci_read_config_word(pdev
, 4, &command_register
);
4429 /* Turn the board off. This is so that later pci_restore_state()
4430 * won't turn the board on before the rest of config space is ready.
4432 pci_disable_device(pdev
);
4433 pci_save_state(pdev
);
4435 /* find the first memory BAR, so we can find the cfg table */
4436 rc
= cciss_pci_find_memory_BAR(pdev
, &paddr
);
4439 vaddr
= remap_pci_mem(paddr
, 0x250);
4443 /* find cfgtable in order to check if reset via doorbell is supported */
4444 rc
= cciss_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
4445 &cfg_base_addr_index
, &cfg_offset
);
4448 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
4449 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
4455 /* If reset via doorbell register is supported, use that. */
4456 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
4457 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
4459 /* The doorbell reset seems to cause lockups on some Smart
4460 * Arrays (e.g. P410, P410i, maybe others). Until this is
4461 * fixed or at least isolated, avoid the doorbell reset.
4465 rc
= cciss_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
4467 goto unmap_cfgtable
;
4468 pci_restore_state(pdev
);
4469 rc
= pci_enable_device(pdev
);
4471 dev_warn(&pdev
->dev
, "failed to enable device.\n");
4472 goto unmap_cfgtable
;
4474 pci_write_config_word(pdev
, 4, command_register
);
4476 /* Some devices (notably the HP Smart Array 5i Controller)
4477 need a little pause here */
4478 msleep(CCISS_POST_RESET_PAUSE_MSECS
);
4480 /* Wait for board to become not ready, then ready. */
4481 dev_info(&pdev
->dev
, "Waiting for board to become ready.\n");
4482 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
4483 if (rc
) /* Don't bail, might be E500, etc. which can't be reset */
4484 dev_warn(&pdev
->dev
,
4485 "failed waiting for board to become not ready\n");
4486 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
4488 dev_warn(&pdev
->dev
,
4489 "failed waiting for board to become ready\n");
4490 goto unmap_cfgtable
;
4492 dev_info(&pdev
->dev
, "board ready.\n");
4494 /* Controller should be in simple mode at this point. If it's not,
4495 * It means we're on one of those controllers which doesn't support
4496 * the doorbell reset method and on which the PCI power management reset
4497 * method doesn't work (P800, for example.)
4498 * In those cases, don't try to proceed, as it generally doesn't work.
4500 active_transport
= readl(&cfgtable
->TransportActive
);
4501 if (active_transport
& PERFORMANT_MODE
) {
4502 dev_warn(&pdev
->dev
, "Unable to successfully reset controller,"
4503 " Ignoring controller.\n");
4515 static __devinit
int cciss_init_reset_devices(struct pci_dev
*pdev
)
4522 /* Reset the controller with a PCI power-cycle or via doorbell */
4523 rc
= cciss_kdump_hard_reset_controller(pdev
);
4525 /* -ENOTSUPP here means we cannot reset the controller
4526 * but it's already (and still) up and running in
4527 * "performant mode". Or, it might be 640x, which can't reset
4528 * due to concerns about shared bbwc between 6402/6404 pair.
4530 if (rc
== -ENOTSUPP
)
4531 return 0; /* just try to do the kdump anyhow. */
4535 /* Now try to get the controller to respond to a no-op */
4536 for (i
= 0; i
< CCISS_POST_RESET_NOOP_RETRIES
; i
++) {
4537 if (cciss_noop(pdev
) == 0)
4540 dev_warn(&pdev
->dev
, "no-op failed%s\n",
4541 (i
< CCISS_POST_RESET_NOOP_RETRIES
- 1 ?
4542 "; re-trying" : ""));
4543 msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS
);
4549 * This is it. Find all the controllers and register them. I really hate
4550 * stealing all these major device numbers.
4551 * returns the number of block devices registered.
4553 static int __devinit
cciss_init_one(struct pci_dev
*pdev
,
4554 const struct pci_device_id
*ent
)
4560 int dac
, return_code
;
4561 InquiryData_struct
*inq_buff
;
4564 rc
= cciss_init_reset_devices(pdev
);
4567 i
= alloc_cciss_hba(pdev
);
4573 h
->busy_initializing
= 1;
4574 INIT_HLIST_HEAD(&h
->cmpQ
);
4575 INIT_HLIST_HEAD(&h
->reqQ
);
4576 mutex_init(&h
->busy_shutting_down
);
4578 if (cciss_pci_init(h
) != 0)
4579 goto clean_no_release_regions
;
4581 sprintf(h
->devname
, "cciss%d", i
);
4584 init_completion(&h
->scan_wait
);
4586 if (cciss_create_hba_sysfs_entry(h
))
4589 /* configure PCI DMA stuff */
4590 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)))
4592 else if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)))
4595 dev_err(&h
->pdev
->dev
, "no suitable DMA available\n");
4600 * register with the major number, or get a dynamic major number
4601 * by passing 0 as argument. This is done for greater than
4602 * 8 controller support.
4604 if (i
< MAX_CTLR_ORIG
)
4605 h
->major
= COMPAQ_CISS_MAJOR
+ i
;
4606 rc
= register_blkdev(h
->major
, h
->devname
);
4607 if (rc
== -EBUSY
|| rc
== -EINVAL
) {
4608 dev_err(&h
->pdev
->dev
,
4609 "Unable to get major number %d for %s "
4610 "on hba %d\n", h
->major
, h
->devname
, i
);
4613 if (i
>= MAX_CTLR_ORIG
)
4617 /* make sure the board interrupts are off */
4618 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
4619 if (h
->msi_vector
|| h
->msix_vector
) {
4620 if (request_irq(h
->intr
[PERF_MODE_INT
],
4622 IRQF_DISABLED
, h
->devname
, h
)) {
4623 dev_err(&h
->pdev
->dev
, "Unable to get irq %d for %s\n",
4624 h
->intr
[PERF_MODE_INT
], h
->devname
);
4628 if (request_irq(h
->intr
[PERF_MODE_INT
], do_cciss_intx
,
4629 IRQF_DISABLED
, h
->devname
, h
)) {
4630 dev_err(&h
->pdev
->dev
, "Unable to get irq %d for %s\n",
4631 h
->intr
[PERF_MODE_INT
], h
->devname
);
4636 dev_info(&h
->pdev
->dev
, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
4637 h
->devname
, pdev
->device
, pci_name(pdev
),
4638 h
->intr
[PERF_MODE_INT
], dac
? "" : " not");
4641 kmalloc(DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
)
4642 * sizeof(unsigned long), GFP_KERNEL
);
4643 h
->cmd_pool
= (CommandList_struct
*)
4644 pci_alloc_consistent(h
->pdev
,
4645 h
->nr_cmds
* sizeof(CommandList_struct
),
4646 &(h
->cmd_pool_dhandle
));
4647 h
->errinfo_pool
= (ErrorInfo_struct
*)
4648 pci_alloc_consistent(h
->pdev
,
4649 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4650 &(h
->errinfo_pool_dhandle
));
4651 if ((h
->cmd_pool_bits
== NULL
)
4652 || (h
->cmd_pool
== NULL
)
4653 || (h
->errinfo_pool
== NULL
)) {
4654 dev_err(&h
->pdev
->dev
, "out of memory");
4658 /* Need space for temp scatter list */
4659 h
->scatter_list
= kmalloc(h
->max_commands
*
4660 sizeof(struct scatterlist
*),
4662 if (!h
->scatter_list
)
4665 for (k
= 0; k
< h
->nr_cmds
; k
++) {
4666 h
->scatter_list
[k
] = kmalloc(sizeof(struct scatterlist
) *
4669 if (h
->scatter_list
[k
] == NULL
) {
4670 dev_err(&h
->pdev
->dev
,
4671 "could not allocate s/g lists\n");
4675 h
->cmd_sg_list
= cciss_allocate_sg_chain_blocks(h
,
4676 h
->chainsize
, h
->nr_cmds
);
4677 if (!h
->cmd_sg_list
&& h
->chainsize
> 0)
4680 spin_lock_init(&h
->lock
);
4682 /* Initialize the pdev driver private data.
4683 have it point to h. */
4684 pci_set_drvdata(pdev
, h
);
4685 /* command and error info recs zeroed out before
4687 memset(h
->cmd_pool_bits
, 0,
4688 DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
)
4689 * sizeof(unsigned long));
4692 h
->highest_lun
= -1;
4693 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
4695 h
->gendisk
[j
] = NULL
;
4698 cciss_scsi_setup(h
);
4700 /* Turn the interrupts on so we can service requests */
4701 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
4703 /* Get the firmware version */
4704 inq_buff
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
4705 if (inq_buff
== NULL
) {
4706 dev_err(&h
->pdev
->dev
, "out of memory\n");
4710 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
4711 sizeof(InquiryData_struct
), 0, CTLR_LUNID
, TYPE_CMD
);
4712 if (return_code
== IO_OK
) {
4713 h
->firm_ver
[0] = inq_buff
->data_byte
[32];
4714 h
->firm_ver
[1] = inq_buff
->data_byte
[33];
4715 h
->firm_ver
[2] = inq_buff
->data_byte
[34];
4716 h
->firm_ver
[3] = inq_buff
->data_byte
[35];
4717 } else { /* send command failed */
4718 dev_warn(&h
->pdev
->dev
, "unable to determine firmware"
4719 " version of controller\n");
4725 h
->cciss_max_sectors
= 8192;
4727 rebuild_lun_table(h
, 1, 0);
4728 h
->busy_initializing
= 0;
4732 kfree(h
->cmd_pool_bits
);
4733 /* Free up sg elements */
4734 for (k
-- ; k
>= 0; k
--)
4735 kfree(h
->scatter_list
[k
]);
4736 kfree(h
->scatter_list
);
4737 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
4739 pci_free_consistent(h
->pdev
,
4740 h
->nr_cmds
* sizeof(CommandList_struct
),
4741 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4742 if (h
->errinfo_pool
)
4743 pci_free_consistent(h
->pdev
,
4744 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4746 h
->errinfo_pool_dhandle
);
4747 free_irq(h
->intr
[PERF_MODE_INT
], h
);
4749 unregister_blkdev(h
->major
, h
->devname
);
4751 cciss_destroy_hba_sysfs_entry(h
);
4753 pci_release_regions(pdev
);
4754 clean_no_release_regions
:
4755 h
->busy_initializing
= 0;
4758 * Deliberately omit pci_disable_device(): it does something nasty to
4759 * Smart Array controllers that pci_enable_device does not undo
4761 pci_set_drvdata(pdev
, NULL
);
4766 static void cciss_shutdown(struct pci_dev
*pdev
)
4772 h
= pci_get_drvdata(pdev
);
4773 flush_buf
= kzalloc(4, GFP_KERNEL
);
4775 dev_warn(&h
->pdev
->dev
, "cache not flushed, out of memory.\n");
4778 /* write all data in the battery backed cache to disk */
4779 memset(flush_buf
, 0, 4);
4780 return_code
= sendcmd_withirq(h
, CCISS_CACHE_FLUSH
, flush_buf
,
4781 4, 0, CTLR_LUNID
, TYPE_CMD
);
4783 if (return_code
!= IO_OK
)
4784 dev_warn(&h
->pdev
->dev
, "Error flushing cache\n");
4785 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
4786 free_irq(h
->intr
[PERF_MODE_INT
], h
);
4789 static void __devexit
cciss_remove_one(struct pci_dev
*pdev
)
4794 if (pci_get_drvdata(pdev
) == NULL
) {
4795 dev_err(&pdev
->dev
, "Unable to remove device\n");
4799 h
= pci_get_drvdata(pdev
);
4801 if (hba
[i
] == NULL
) {
4802 dev_err(&pdev
->dev
, "device appears to already be removed\n");
4806 mutex_lock(&h
->busy_shutting_down
);
4808 remove_from_scan_list(h
);
4809 remove_proc_entry(h
->devname
, proc_cciss
);
4810 unregister_blkdev(h
->major
, h
->devname
);
4812 /* remove it from the disk list */
4813 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
4814 struct gendisk
*disk
= h
->gendisk
[j
];
4816 struct request_queue
*q
= disk
->queue
;
4818 if (disk
->flags
& GENHD_FL_UP
) {
4819 cciss_destroy_ld_sysfs_entry(h
, j
, 1);
4823 blk_cleanup_queue(q
);
4827 #ifdef CONFIG_CISS_SCSI_TAPE
4828 cciss_unregister_scsi(h
); /* unhook from SCSI subsystem */
4831 cciss_shutdown(pdev
);
4833 #ifdef CONFIG_PCI_MSI
4835 pci_disable_msix(h
->pdev
);
4836 else if (h
->msi_vector
)
4837 pci_disable_msi(h
->pdev
);
4838 #endif /* CONFIG_PCI_MSI */
4840 iounmap(h
->transtable
);
4841 iounmap(h
->cfgtable
);
4844 pci_free_consistent(h
->pdev
, h
->nr_cmds
* sizeof(CommandList_struct
),
4845 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4846 pci_free_consistent(h
->pdev
, h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4847 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4848 kfree(h
->cmd_pool_bits
);
4849 /* Free up sg elements */
4850 for (j
= 0; j
< h
->nr_cmds
; j
++)
4851 kfree(h
->scatter_list
[j
]);
4852 kfree(h
->scatter_list
);
4853 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
4855 * Deliberately omit pci_disable_device(): it does something nasty to
4856 * Smart Array controllers that pci_enable_device does not undo
4858 pci_release_regions(pdev
);
4859 pci_set_drvdata(pdev
, NULL
);
4860 cciss_destroy_hba_sysfs_entry(h
);
4861 mutex_unlock(&h
->busy_shutting_down
);
4865 static struct pci_driver cciss_pci_driver
= {
4867 .probe
= cciss_init_one
,
4868 .remove
= __devexit_p(cciss_remove_one
),
4869 .id_table
= cciss_pci_device_id
, /* id_table */
4870 .shutdown
= cciss_shutdown
,
4874 * This is it. Register the PCI driver information for the cards we control
4875 * the OS will call our registered routines when it finds one of our cards.
4877 static int __init
cciss_init(void)
4882 * The hardware requires that commands are aligned on a 64-bit
4883 * boundary. Given that we use pci_alloc_consistent() to allocate an
4884 * array of them, the size must be a multiple of 8 bytes.
4886 BUILD_BUG_ON(sizeof(CommandList_struct
) % COMMANDLIST_ALIGNMENT
);
4887 printk(KERN_INFO DRIVER_NAME
"\n");
4889 err
= bus_register(&cciss_bus_type
);
4893 /* Start the scan thread */
4894 cciss_scan_thread
= kthread_run(scan_thread
, NULL
, "cciss_scan");
4895 if (IS_ERR(cciss_scan_thread
)) {
4896 err
= PTR_ERR(cciss_scan_thread
);
4897 goto err_bus_unregister
;
4900 /* Register for our PCI devices */
4901 err
= pci_register_driver(&cciss_pci_driver
);
4903 goto err_thread_stop
;
4908 kthread_stop(cciss_scan_thread
);
4910 bus_unregister(&cciss_bus_type
);
4915 static void __exit
cciss_cleanup(void)
4919 pci_unregister_driver(&cciss_pci_driver
);
4920 /* double check that all controller entrys have been removed */
4921 for (i
= 0; i
< MAX_CTLR
; i
++) {
4922 if (hba
[i
] != NULL
) {
4923 dev_warn(&hba
[i
]->pdev
->dev
,
4924 "had to remove controller\n");
4925 cciss_remove_one(hba
[i
]->pdev
);
4928 kthread_stop(cciss_scan_thread
);
4930 remove_proc_entry("driver/cciss", NULL
);
4931 bus_unregister(&cciss_bus_type
);
4934 module_init(cciss_init
);
4935 module_exit(cciss_cleanup
);