2 * Disk Array driver for HP Smart Array controllers.
3 * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
23 #include <linux/module.h>
24 #include <linux/interrupt.h>
25 #include <linux/types.h>
26 #include <linux/pci.h>
27 #include <linux/kernel.h>
28 #include <linux/slab.h>
29 #include <linux/delay.h>
30 #include <linux/major.h>
32 #include <linux/bio.h>
33 #include <linux/blkpg.h>
34 #include <linux/timer.h>
35 #include <linux/proc_fs.h>
36 #include <linux/seq_file.h>
37 #include <linux/init.h>
38 #include <linux/jiffies.h>
39 #include <linux/hdreg.h>
40 #include <linux/spinlock.h>
41 #include <linux/compat.h>
42 #include <linux/mutex.h>
43 #include <asm/uaccess.h>
46 #include <linux/dma-mapping.h>
47 #include <linux/blkdev.h>
48 #include <linux/genhd.h>
49 #include <linux/completion.h>
50 #include <scsi/scsi.h>
52 #include <scsi/scsi_ioctl.h>
53 #include <linux/cdrom.h>
54 #include <linux/scatterlist.h>
55 #include <linux/kthread.h>
57 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
58 #define DRIVER_NAME "HP CISS Driver (v 3.6.26)"
59 #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26)
61 /* Embedded module documentation macros - see modules.h */
62 MODULE_AUTHOR("Hewlett-Packard Company");
63 MODULE_DESCRIPTION("Driver for HP Smart Array Controllers");
64 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
65 MODULE_VERSION("3.6.26");
66 MODULE_LICENSE("GPL");
68 static DEFINE_MUTEX(cciss_mutex
);
69 static struct proc_dir_entry
*proc_cciss
;
71 #include "cciss_cmd.h"
73 #include <linux/cciss_ioctl.h>
75 /* define the PCI info for the cards we can control */
76 static const struct pci_device_id cciss_pci_device_id
[] = {
77 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISS
, 0x0E11, 0x4070},
78 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4080},
79 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4082},
80 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4083},
81 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x4091},
82 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409A},
83 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409B},
84 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409C},
85 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409D},
86 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSA
, 0x103C, 0x3225},
87 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3223},
88 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3234},
89 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3235},
90 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3211},
91 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3212},
92 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3213},
93 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3214},
94 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3215},
95 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3237},
96 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x323D},
100 MODULE_DEVICE_TABLE(pci
, cciss_pci_device_id
);
102 /* board_id = Subsystem Device ID & Vendor ID
103 * product = Marketing Name for the board
104 * access = Address of the struct of function pointers
106 static struct board_type products
[] = {
107 {0x40700E11, "Smart Array 5300", &SA5_access
},
108 {0x40800E11, "Smart Array 5i", &SA5B_access
},
109 {0x40820E11, "Smart Array 532", &SA5B_access
},
110 {0x40830E11, "Smart Array 5312", &SA5B_access
},
111 {0x409A0E11, "Smart Array 641", &SA5_access
},
112 {0x409B0E11, "Smart Array 642", &SA5_access
},
113 {0x409C0E11, "Smart Array 6400", &SA5_access
},
114 {0x409D0E11, "Smart Array 6400 EM", &SA5_access
},
115 {0x40910E11, "Smart Array 6i", &SA5_access
},
116 {0x3225103C, "Smart Array P600", &SA5_access
},
117 {0x3223103C, "Smart Array P800", &SA5_access
},
118 {0x3234103C, "Smart Array P400", &SA5_access
},
119 {0x3235103C, "Smart Array P400i", &SA5_access
},
120 {0x3211103C, "Smart Array E200i", &SA5_access
},
121 {0x3212103C, "Smart Array E200", &SA5_access
},
122 {0x3213103C, "Smart Array E200i", &SA5_access
},
123 {0x3214103C, "Smart Array E200i", &SA5_access
},
124 {0x3215103C, "Smart Array E200i", &SA5_access
},
125 {0x3237103C, "Smart Array E500", &SA5_access
},
126 {0x3223103C, "Smart Array P800", &SA5_access
},
127 {0x3234103C, "Smart Array P400", &SA5_access
},
128 {0x323D103C, "Smart Array P700m", &SA5_access
},
131 /* How long to wait (in milliseconds) for board to go into simple mode */
132 #define MAX_CONFIG_WAIT 30000
133 #define MAX_IOCTL_CONFIG_WAIT 1000
135 /*define how many times we will try a command because of bus resets */
136 #define MAX_CMD_RETRIES 3
140 /* Originally cciss driver only supports 8 major numbers */
141 #define MAX_CTLR_ORIG 8
143 static ctlr_info_t
*hba
[MAX_CTLR
];
145 static struct task_struct
*cciss_scan_thread
;
146 static DEFINE_MUTEX(scan_mutex
);
147 static LIST_HEAD(scan_q
);
149 static void do_cciss_request(struct request_queue
*q
);
150 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
);
151 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
);
152 static int cciss_open(struct block_device
*bdev
, fmode_t mode
);
153 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
);
154 static int cciss_release(struct gendisk
*disk
, fmode_t mode
);
155 static int do_ioctl(struct block_device
*bdev
, fmode_t mode
,
156 unsigned int cmd
, unsigned long arg
);
157 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
158 unsigned int cmd
, unsigned long arg
);
159 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
);
161 static int cciss_revalidate(struct gendisk
*disk
);
162 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
, int via_ioctl
);
163 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
164 int clear_all
, int via_ioctl
);
166 static void cciss_read_capacity(ctlr_info_t
*h
, int logvol
,
167 sector_t
*total_size
, unsigned int *block_size
);
168 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
169 sector_t
*total_size
, unsigned int *block_size
);
170 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
172 unsigned int block_size
, InquiryData_struct
*inq_buff
,
173 drive_info_struct
*drv
);
174 static void __devinit
cciss_interrupt_mode(ctlr_info_t
*);
175 static void start_io(ctlr_info_t
*h
);
176 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
177 __u8 page_code
, unsigned char scsi3addr
[],
179 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
181 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
);
183 static int add_to_scan_list(struct ctlr_info
*h
);
184 static int scan_thread(void *data
);
185 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
);
186 static void cciss_hba_release(struct device
*dev
);
187 static void cciss_device_release(struct device
*dev
);
188 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
);
189 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
);
190 static inline u32
next_command(ctlr_info_t
*h
);
191 static int __devinit
cciss_find_cfg_addrs(struct pci_dev
*pdev
,
192 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
194 static int __devinit
cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
195 unsigned long *memory_bar
);
196 static inline u32
cciss_tag_discard_error_bits(ctlr_info_t
*h
, u32 tag
);
197 static __devinit
int write_driver_ver_to_cfgtable(
198 CfgTable_struct __iomem
*cfgtable
);
200 /* performant mode helper functions */
201 static void calc_bucket_map(int *bucket
, int num_buckets
, int nsgs
,
203 static void cciss_put_controller_into_performant_mode(ctlr_info_t
*h
);
205 #ifdef CONFIG_PROC_FS
206 static void cciss_procinit(ctlr_info_t
*h
);
208 static void cciss_procinit(ctlr_info_t
*h
)
211 #endif /* CONFIG_PROC_FS */
214 static int cciss_compat_ioctl(struct block_device
*, fmode_t
,
215 unsigned, unsigned long);
218 static const struct block_device_operations cciss_fops
= {
219 .owner
= THIS_MODULE
,
220 .open
= cciss_unlocked_open
,
221 .release
= cciss_release
,
223 .getgeo
= cciss_getgeo
,
225 .compat_ioctl
= cciss_compat_ioctl
,
227 .revalidate_disk
= cciss_revalidate
,
230 /* set_performant_mode: Modify the tag for cciss performant
231 * set bit 0 for pull model, bits 3-1 for block fetch
234 static void set_performant_mode(ctlr_info_t
*h
, CommandList_struct
*c
)
236 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
237 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
241 * Enqueuing and dequeuing functions for cmdlists.
243 static inline void addQ(struct list_head
*list
, CommandList_struct
*c
)
245 list_add_tail(&c
->list
, list
);
248 static inline void removeQ(CommandList_struct
*c
)
251 * After kexec/dump some commands might still
252 * be in flight, which the firmware will try
253 * to complete. Resetting the firmware doesn't work
254 * with old fw revisions, so we have to mark
255 * them off as 'stale' to prevent the driver from
258 if (WARN_ON(list_empty(&c
->list
))) {
259 c
->cmd_type
= CMD_MSG_STALE
;
263 list_del_init(&c
->list
);
266 static void enqueue_cmd_and_start_io(ctlr_info_t
*h
,
267 CommandList_struct
*c
)
270 set_performant_mode(h
, c
);
271 spin_lock_irqsave(&h
->lock
, flags
);
274 if (h
->Qdepth
> h
->maxQsinceinit
)
275 h
->maxQsinceinit
= h
->Qdepth
;
277 spin_unlock_irqrestore(&h
->lock
, flags
);
280 static void cciss_free_sg_chain_blocks(SGDescriptor_struct
**cmd_sg_list
,
287 for (i
= 0; i
< nr_cmds
; i
++) {
288 kfree(cmd_sg_list
[i
]);
289 cmd_sg_list
[i
] = NULL
;
294 static SGDescriptor_struct
**cciss_allocate_sg_chain_blocks(
295 ctlr_info_t
*h
, int chainsize
, int nr_cmds
)
298 SGDescriptor_struct
**cmd_sg_list
;
303 cmd_sg_list
= kmalloc(sizeof(*cmd_sg_list
) * nr_cmds
, GFP_KERNEL
);
307 /* Build up chain blocks for each command */
308 for (j
= 0; j
< nr_cmds
; j
++) {
309 /* Need a block of chainsized s/g elements. */
310 cmd_sg_list
[j
] = kmalloc((chainsize
*
311 sizeof(*cmd_sg_list
[j
])), GFP_KERNEL
);
312 if (!cmd_sg_list
[j
]) {
313 dev_err(&h
->pdev
->dev
, "Cannot get memory "
314 "for s/g chains.\n");
320 cciss_free_sg_chain_blocks(cmd_sg_list
, nr_cmds
);
324 static void cciss_unmap_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
)
326 SGDescriptor_struct
*chain_sg
;
329 if (c
->Header
.SGTotal
<= h
->max_cmd_sgentries
)
332 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
333 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
334 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
335 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
338 static void cciss_map_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
,
339 SGDescriptor_struct
*chain_block
, int len
)
341 SGDescriptor_struct
*chain_sg
;
344 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
345 chain_sg
->Ext
= CCISS_SG_CHAIN
;
347 temp64
.val
= pci_map_single(h
->pdev
, chain_block
, len
,
349 chain_sg
->Addr
.lower
= temp64
.val32
.lower
;
350 chain_sg
->Addr
.upper
= temp64
.val32
.upper
;
353 #include "cciss_scsi.c" /* For SCSI tape support */
355 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
358 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1)
360 #ifdef CONFIG_PROC_FS
363 * Report information about this controller.
365 #define ENG_GIG 1000000000
366 #define ENG_GIG_FACTOR (ENG_GIG/512)
367 #define ENGAGE_SCSI "engage scsi"
369 static void cciss_seq_show_header(struct seq_file
*seq
)
371 ctlr_info_t
*h
= seq
->private;
373 seq_printf(seq
, "%s: HP %s Controller\n"
374 "Board ID: 0x%08lx\n"
375 "Firmware Version: %c%c%c%c\n"
377 "Logical drives: %d\n"
378 "Current Q depth: %d\n"
379 "Current # commands on controller: %d\n"
380 "Max Q depth since init: %d\n"
381 "Max # commands on controller since init: %d\n"
382 "Max SG entries since init: %d\n",
385 (unsigned long)h
->board_id
,
386 h
->firm_ver
[0], h
->firm_ver
[1], h
->firm_ver
[2],
387 h
->firm_ver
[3], (unsigned int)h
->intr
[PERF_MODE_INT
],
389 h
->Qdepth
, h
->commands_outstanding
,
390 h
->maxQsinceinit
, h
->max_outstanding
, h
->maxSG
);
392 #ifdef CONFIG_CISS_SCSI_TAPE
393 cciss_seq_tape_report(seq
, h
);
394 #endif /* CONFIG_CISS_SCSI_TAPE */
397 static void *cciss_seq_start(struct seq_file
*seq
, loff_t
*pos
)
399 ctlr_info_t
*h
= seq
->private;
402 /* prevent displaying bogus info during configuration
403 * or deconfiguration of a logical volume
405 spin_lock_irqsave(&h
->lock
, flags
);
406 if (h
->busy_configuring
) {
407 spin_unlock_irqrestore(&h
->lock
, flags
);
408 return ERR_PTR(-EBUSY
);
410 h
->busy_configuring
= 1;
411 spin_unlock_irqrestore(&h
->lock
, flags
);
414 cciss_seq_show_header(seq
);
419 static int cciss_seq_show(struct seq_file
*seq
, void *v
)
421 sector_t vol_sz
, vol_sz_frac
;
422 ctlr_info_t
*h
= seq
->private;
423 unsigned ctlr
= h
->ctlr
;
425 drive_info_struct
*drv
= h
->drv
[*pos
];
427 if (*pos
> h
->highest_lun
)
430 if (drv
== NULL
) /* it's possible for h->drv[] to have holes. */
436 vol_sz
= drv
->nr_blocks
;
437 vol_sz_frac
= sector_div(vol_sz
, ENG_GIG_FACTOR
);
439 sector_div(vol_sz_frac
, ENG_GIG_FACTOR
);
441 if (drv
->raid_level
< 0 || drv
->raid_level
> RAID_UNKNOWN
)
442 drv
->raid_level
= RAID_UNKNOWN
;
443 seq_printf(seq
, "cciss/c%dd%d:"
444 "\t%4u.%02uGB\tRAID %s\n",
445 ctlr
, (int) *pos
, (int)vol_sz
, (int)vol_sz_frac
,
446 raid_label
[drv
->raid_level
]);
450 static void *cciss_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
452 ctlr_info_t
*h
= seq
->private;
454 if (*pos
> h
->highest_lun
)
461 static void cciss_seq_stop(struct seq_file
*seq
, void *v
)
463 ctlr_info_t
*h
= seq
->private;
465 /* Only reset h->busy_configuring if we succeeded in setting
466 * it during cciss_seq_start. */
467 if (v
== ERR_PTR(-EBUSY
))
470 h
->busy_configuring
= 0;
473 static const struct seq_operations cciss_seq_ops
= {
474 .start
= cciss_seq_start
,
475 .show
= cciss_seq_show
,
476 .next
= cciss_seq_next
,
477 .stop
= cciss_seq_stop
,
480 static int cciss_seq_open(struct inode
*inode
, struct file
*file
)
482 int ret
= seq_open(file
, &cciss_seq_ops
);
483 struct seq_file
*seq
= file
->private_data
;
486 seq
->private = PDE(inode
)->data
;
492 cciss_proc_write(struct file
*file
, const char __user
*buf
,
493 size_t length
, loff_t
*ppos
)
498 #ifndef CONFIG_CISS_SCSI_TAPE
502 if (!buf
|| length
> PAGE_SIZE
- 1)
505 buffer
= (char *)__get_free_page(GFP_KERNEL
);
510 if (copy_from_user(buffer
, buf
, length
))
512 buffer
[length
] = '\0';
514 #ifdef CONFIG_CISS_SCSI_TAPE
515 if (strncmp(ENGAGE_SCSI
, buffer
, sizeof ENGAGE_SCSI
- 1) == 0) {
516 struct seq_file
*seq
= file
->private_data
;
517 ctlr_info_t
*h
= seq
->private;
519 err
= cciss_engage_scsi(h
);
523 #endif /* CONFIG_CISS_SCSI_TAPE */
525 /* might be nice to have "disengage" too, but it's not
526 safely possible. (only 1 module use count, lock issues.) */
529 free_page((unsigned long)buffer
);
533 static const struct file_operations cciss_proc_fops
= {
534 .owner
= THIS_MODULE
,
535 .open
= cciss_seq_open
,
538 .release
= seq_release
,
539 .write
= cciss_proc_write
,
542 static void __devinit
cciss_procinit(ctlr_info_t
*h
)
544 struct proc_dir_entry
*pde
;
546 if (proc_cciss
== NULL
)
547 proc_cciss
= proc_mkdir("driver/cciss", NULL
);
550 pde
= proc_create_data(h
->devname
, S_IWUSR
| S_IRUSR
| S_IRGRP
|
552 &cciss_proc_fops
, h
);
554 #endif /* CONFIG_PROC_FS */
556 #define MAX_PRODUCT_NAME_LEN 19
558 #define to_hba(n) container_of(n, struct ctlr_info, dev)
559 #define to_drv(n) container_of(n, drive_info_struct, dev)
561 /* List of controllers which cannot be reset on kexec with reset_devices */
562 static u32 unresettable_controller
[] = {
563 0x324a103C, /* Smart Array P712m */
564 0x324b103C, /* SmartArray P711m */
565 0x3223103C, /* Smart Array P800 */
566 0x3234103C, /* Smart Array P400 */
567 0x3235103C, /* Smart Array P400i */
568 0x3211103C, /* Smart Array E200i */
569 0x3212103C, /* Smart Array E200 */
570 0x3213103C, /* Smart Array E200i */
571 0x3214103C, /* Smart Array E200i */
572 0x3215103C, /* Smart Array E200i */
573 0x3237103C, /* Smart Array E500 */
574 0x323D103C, /* Smart Array P700m */
575 0x409C0E11, /* Smart Array 6400 */
576 0x409D0E11, /* Smart Array 6400 EM */
579 static int ctlr_is_resettable(struct ctlr_info
*h
)
583 for (i
= 0; i
< ARRAY_SIZE(unresettable_controller
); i
++)
584 if (unresettable_controller
[i
] == h
->board_id
)
589 static ssize_t
host_show_resettable(struct device
*dev
,
590 struct device_attribute
*attr
,
593 struct ctlr_info
*h
= to_hba(dev
);
595 return snprintf(buf
, 20, "%d\n", ctlr_is_resettable(h
));
597 static DEVICE_ATTR(resettable
, S_IRUGO
, host_show_resettable
, NULL
);
599 static ssize_t
host_store_rescan(struct device
*dev
,
600 struct device_attribute
*attr
,
601 const char *buf
, size_t count
)
603 struct ctlr_info
*h
= to_hba(dev
);
606 wake_up_process(cciss_scan_thread
);
607 wait_for_completion_interruptible(&h
->scan_wait
);
611 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
613 static ssize_t
dev_show_unique_id(struct device
*dev
,
614 struct device_attribute
*attr
,
617 drive_info_struct
*drv
= to_drv(dev
);
618 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
623 spin_lock_irqsave(&h
->lock
, flags
);
624 if (h
->busy_configuring
)
627 memcpy(sn
, drv
->serial_no
, sizeof(sn
));
628 spin_unlock_irqrestore(&h
->lock
, flags
);
633 return snprintf(buf
, 16 * 2 + 2,
634 "%02X%02X%02X%02X%02X%02X%02X%02X"
635 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
636 sn
[0], sn
[1], sn
[2], sn
[3],
637 sn
[4], sn
[5], sn
[6], sn
[7],
638 sn
[8], sn
[9], sn
[10], sn
[11],
639 sn
[12], sn
[13], sn
[14], sn
[15]);
641 static DEVICE_ATTR(unique_id
, S_IRUGO
, dev_show_unique_id
, NULL
);
643 static ssize_t
dev_show_vendor(struct device
*dev
,
644 struct device_attribute
*attr
,
647 drive_info_struct
*drv
= to_drv(dev
);
648 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
649 char vendor
[VENDOR_LEN
+ 1];
653 spin_lock_irqsave(&h
->lock
, flags
);
654 if (h
->busy_configuring
)
657 memcpy(vendor
, drv
->vendor
, VENDOR_LEN
+ 1);
658 spin_unlock_irqrestore(&h
->lock
, flags
);
663 return snprintf(buf
, sizeof(vendor
) + 1, "%s\n", drv
->vendor
);
665 static DEVICE_ATTR(vendor
, S_IRUGO
, dev_show_vendor
, NULL
);
667 static ssize_t
dev_show_model(struct device
*dev
,
668 struct device_attribute
*attr
,
671 drive_info_struct
*drv
= to_drv(dev
);
672 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
673 char model
[MODEL_LEN
+ 1];
677 spin_lock_irqsave(&h
->lock
, flags
);
678 if (h
->busy_configuring
)
681 memcpy(model
, drv
->model
, MODEL_LEN
+ 1);
682 spin_unlock_irqrestore(&h
->lock
, flags
);
687 return snprintf(buf
, sizeof(model
) + 1, "%s\n", drv
->model
);
689 static DEVICE_ATTR(model
, S_IRUGO
, dev_show_model
, NULL
);
691 static ssize_t
dev_show_rev(struct device
*dev
,
692 struct device_attribute
*attr
,
695 drive_info_struct
*drv
= to_drv(dev
);
696 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
697 char rev
[REV_LEN
+ 1];
701 spin_lock_irqsave(&h
->lock
, flags
);
702 if (h
->busy_configuring
)
705 memcpy(rev
, drv
->rev
, REV_LEN
+ 1);
706 spin_unlock_irqrestore(&h
->lock
, flags
);
711 return snprintf(buf
, sizeof(rev
) + 1, "%s\n", drv
->rev
);
713 static DEVICE_ATTR(rev
, S_IRUGO
, dev_show_rev
, NULL
);
715 static ssize_t
cciss_show_lunid(struct device
*dev
,
716 struct device_attribute
*attr
, char *buf
)
718 drive_info_struct
*drv
= to_drv(dev
);
719 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
721 unsigned char lunid
[8];
723 spin_lock_irqsave(&h
->lock
, flags
);
724 if (h
->busy_configuring
) {
725 spin_unlock_irqrestore(&h
->lock
, flags
);
729 spin_unlock_irqrestore(&h
->lock
, flags
);
732 memcpy(lunid
, drv
->LunID
, sizeof(lunid
));
733 spin_unlock_irqrestore(&h
->lock
, flags
);
734 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
735 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
736 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
738 static DEVICE_ATTR(lunid
, S_IRUGO
, cciss_show_lunid
, NULL
);
740 static ssize_t
cciss_show_raid_level(struct device
*dev
,
741 struct device_attribute
*attr
, char *buf
)
743 drive_info_struct
*drv
= to_drv(dev
);
744 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
748 spin_lock_irqsave(&h
->lock
, flags
);
749 if (h
->busy_configuring
) {
750 spin_unlock_irqrestore(&h
->lock
, flags
);
753 raid
= drv
->raid_level
;
754 spin_unlock_irqrestore(&h
->lock
, flags
);
755 if (raid
< 0 || raid
> RAID_UNKNOWN
)
758 return snprintf(buf
, strlen(raid_label
[raid
]) + 7, "RAID %s\n",
761 static DEVICE_ATTR(raid_level
, S_IRUGO
, cciss_show_raid_level
, NULL
);
763 static ssize_t
cciss_show_usage_count(struct device
*dev
,
764 struct device_attribute
*attr
, char *buf
)
766 drive_info_struct
*drv
= to_drv(dev
);
767 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
771 spin_lock_irqsave(&h
->lock
, flags
);
772 if (h
->busy_configuring
) {
773 spin_unlock_irqrestore(&h
->lock
, flags
);
776 count
= drv
->usage_count
;
777 spin_unlock_irqrestore(&h
->lock
, flags
);
778 return snprintf(buf
, 20, "%d\n", count
);
780 static DEVICE_ATTR(usage_count
, S_IRUGO
, cciss_show_usage_count
, NULL
);
782 static struct attribute
*cciss_host_attrs
[] = {
783 &dev_attr_rescan
.attr
,
784 &dev_attr_resettable
.attr
,
788 static struct attribute_group cciss_host_attr_group
= {
789 .attrs
= cciss_host_attrs
,
792 static const struct attribute_group
*cciss_host_attr_groups
[] = {
793 &cciss_host_attr_group
,
797 static struct device_type cciss_host_type
= {
798 .name
= "cciss_host",
799 .groups
= cciss_host_attr_groups
,
800 .release
= cciss_hba_release
,
803 static struct attribute
*cciss_dev_attrs
[] = {
804 &dev_attr_unique_id
.attr
,
805 &dev_attr_model
.attr
,
806 &dev_attr_vendor
.attr
,
808 &dev_attr_lunid
.attr
,
809 &dev_attr_raid_level
.attr
,
810 &dev_attr_usage_count
.attr
,
814 static struct attribute_group cciss_dev_attr_group
= {
815 .attrs
= cciss_dev_attrs
,
818 static const struct attribute_group
*cciss_dev_attr_groups
[] = {
819 &cciss_dev_attr_group
,
823 static struct device_type cciss_dev_type
= {
824 .name
= "cciss_device",
825 .groups
= cciss_dev_attr_groups
,
826 .release
= cciss_device_release
,
829 static struct bus_type cciss_bus_type
= {
834 * cciss_hba_release is called when the reference count
835 * of h->dev goes to zero.
837 static void cciss_hba_release(struct device
*dev
)
840 * nothing to do, but need this to avoid a warning
841 * about not having a release handler from lib/kref.c.
846 * Initialize sysfs entry for each controller. This sets up and registers
847 * the 'cciss#' directory for each individual controller under
848 * /sys/bus/pci/devices/<dev>/.
850 static int cciss_create_hba_sysfs_entry(struct ctlr_info
*h
)
852 device_initialize(&h
->dev
);
853 h
->dev
.type
= &cciss_host_type
;
854 h
->dev
.bus
= &cciss_bus_type
;
855 dev_set_name(&h
->dev
, "%s", h
->devname
);
856 h
->dev
.parent
= &h
->pdev
->dev
;
858 return device_add(&h
->dev
);
862 * Remove sysfs entries for an hba.
864 static void cciss_destroy_hba_sysfs_entry(struct ctlr_info
*h
)
867 put_device(&h
->dev
); /* final put. */
870 /* cciss_device_release is called when the reference count
871 * of h->drv[x]dev goes to zero.
873 static void cciss_device_release(struct device
*dev
)
875 drive_info_struct
*drv
= to_drv(dev
);
880 * Initialize sysfs for each logical drive. This sets up and registers
881 * the 'c#d#' directory for each individual logical drive under
882 * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from
883 * /sys/block/cciss!c#d# to this entry.
885 static long cciss_create_ld_sysfs_entry(struct ctlr_info
*h
,
890 if (h
->drv
[drv_index
]->device_initialized
)
893 dev
= &h
->drv
[drv_index
]->dev
;
894 device_initialize(dev
);
895 dev
->type
= &cciss_dev_type
;
896 dev
->bus
= &cciss_bus_type
;
897 dev_set_name(dev
, "c%dd%d", h
->ctlr
, drv_index
);
898 dev
->parent
= &h
->dev
;
899 h
->drv
[drv_index
]->device_initialized
= 1;
900 return device_add(dev
);
904 * Remove sysfs entries for a logical drive.
906 static void cciss_destroy_ld_sysfs_entry(struct ctlr_info
*h
, int drv_index
,
909 struct device
*dev
= &h
->drv
[drv_index
]->dev
;
911 /* special case for c*d0, we only destroy it on controller exit */
912 if (drv_index
== 0 && !ctlr_exiting
)
916 put_device(dev
); /* the "final" put. */
917 h
->drv
[drv_index
] = NULL
;
921 * For operations that cannot sleep, a command block is allocated at init,
922 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
923 * which ones are free or in use.
925 static CommandList_struct
*cmd_alloc(ctlr_info_t
*h
)
927 CommandList_struct
*c
;
930 dma_addr_t cmd_dma_handle
, err_dma_handle
;
933 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
936 } while (test_and_set_bit(i
& (BITS_PER_LONG
- 1),
937 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
)) != 0);
939 memset(c
, 0, sizeof(CommandList_struct
));
940 cmd_dma_handle
= h
->cmd_pool_dhandle
+ i
* sizeof(CommandList_struct
);
941 c
->err_info
= h
->errinfo_pool
+ i
;
942 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
943 err_dma_handle
= h
->errinfo_pool_dhandle
944 + i
* sizeof(ErrorInfo_struct
);
949 INIT_LIST_HEAD(&c
->list
);
950 c
->busaddr
= (__u32
) cmd_dma_handle
;
951 temp64
.val
= (__u64
) err_dma_handle
;
952 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
953 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
954 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
960 /* allocate a command using pci_alloc_consistent, used for ioctls,
961 * etc., not for the main i/o path.
963 static CommandList_struct
*cmd_special_alloc(ctlr_info_t
*h
)
965 CommandList_struct
*c
;
967 dma_addr_t cmd_dma_handle
, err_dma_handle
;
969 c
= (CommandList_struct
*) pci_alloc_consistent(h
->pdev
,
970 sizeof(CommandList_struct
), &cmd_dma_handle
);
973 memset(c
, 0, sizeof(CommandList_struct
));
977 c
->err_info
= (ErrorInfo_struct
*)
978 pci_alloc_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
981 if (c
->err_info
== NULL
) {
982 pci_free_consistent(h
->pdev
,
983 sizeof(CommandList_struct
), c
, cmd_dma_handle
);
986 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
988 INIT_LIST_HEAD(&c
->list
);
989 c
->busaddr
= (__u32
) cmd_dma_handle
;
990 temp64
.val
= (__u64
) err_dma_handle
;
991 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
992 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
993 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
999 static void cmd_free(ctlr_info_t
*h
, CommandList_struct
*c
)
1003 i
= c
- h
->cmd_pool
;
1004 clear_bit(i
& (BITS_PER_LONG
- 1),
1005 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
));
1009 static void cmd_special_free(ctlr_info_t
*h
, CommandList_struct
*c
)
1013 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
1014 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
1015 pci_free_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
1016 c
->err_info
, (dma_addr_t
) temp64
.val
);
1017 pci_free_consistent(h
->pdev
, sizeof(CommandList_struct
), c
,
1018 (dma_addr_t
) cciss_tag_discard_error_bits(h
, (u32
) c
->busaddr
));
1021 static inline ctlr_info_t
*get_host(struct gendisk
*disk
)
1023 return disk
->queue
->queuedata
;
1026 static inline drive_info_struct
*get_drv(struct gendisk
*disk
)
1028 return disk
->private_data
;
1032 * Open. Make sure the device is really there.
1034 static int cciss_open(struct block_device
*bdev
, fmode_t mode
)
1036 ctlr_info_t
*h
= get_host(bdev
->bd_disk
);
1037 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1039 dev_dbg(&h
->pdev
->dev
, "cciss_open %s\n", bdev
->bd_disk
->disk_name
);
1040 if (drv
->busy_configuring
)
1043 * Root is allowed to open raw volume zero even if it's not configured
1044 * so array config can still work. Root is also allowed to open any
1045 * volume that has a LUN ID, so it can issue IOCTL to reread the
1046 * disk information. I don't think I really like this
1047 * but I'm already using way to many device nodes to claim another one
1048 * for "raw controller".
1050 if (drv
->heads
== 0) {
1051 if (MINOR(bdev
->bd_dev
) != 0) { /* not node 0? */
1052 /* if not node 0 make sure it is a partition = 0 */
1053 if (MINOR(bdev
->bd_dev
) & 0x0f) {
1055 /* if it is, make sure we have a LUN ID */
1056 } else if (memcmp(drv
->LunID
, CTLR_LUNID
,
1057 sizeof(drv
->LunID
))) {
1061 if (!capable(CAP_SYS_ADMIN
))
1069 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
)
1073 mutex_lock(&cciss_mutex
);
1074 ret
= cciss_open(bdev
, mode
);
1075 mutex_unlock(&cciss_mutex
);
1081 * Close. Sync first.
1083 static int cciss_release(struct gendisk
*disk
, fmode_t mode
)
1086 drive_info_struct
*drv
;
1088 mutex_lock(&cciss_mutex
);
1090 drv
= get_drv(disk
);
1091 dev_dbg(&h
->pdev
->dev
, "cciss_release %s\n", disk
->disk_name
);
1094 mutex_unlock(&cciss_mutex
);
1098 static int do_ioctl(struct block_device
*bdev
, fmode_t mode
,
1099 unsigned cmd
, unsigned long arg
)
1102 mutex_lock(&cciss_mutex
);
1103 ret
= cciss_ioctl(bdev
, mode
, cmd
, arg
);
1104 mutex_unlock(&cciss_mutex
);
1108 #ifdef CONFIG_COMPAT
1110 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1111 unsigned cmd
, unsigned long arg
);
1112 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1113 unsigned cmd
, unsigned long arg
);
1115 static int cciss_compat_ioctl(struct block_device
*bdev
, fmode_t mode
,
1116 unsigned cmd
, unsigned long arg
)
1119 case CCISS_GETPCIINFO
:
1120 case CCISS_GETINTINFO
:
1121 case CCISS_SETINTINFO
:
1122 case CCISS_GETNODENAME
:
1123 case CCISS_SETNODENAME
:
1124 case CCISS_GETHEARTBEAT
:
1125 case CCISS_GETBUSTYPES
:
1126 case CCISS_GETFIRMVER
:
1127 case CCISS_GETDRIVVER
:
1128 case CCISS_REVALIDVOLS
:
1129 case CCISS_DEREGDISK
:
1130 case CCISS_REGNEWDISK
:
1132 case CCISS_RESCANDISK
:
1133 case CCISS_GETLUNINFO
:
1134 return do_ioctl(bdev
, mode
, cmd
, arg
);
1136 case CCISS_PASSTHRU32
:
1137 return cciss_ioctl32_passthru(bdev
, mode
, cmd
, arg
);
1138 case CCISS_BIG_PASSTHRU32
:
1139 return cciss_ioctl32_big_passthru(bdev
, mode
, cmd
, arg
);
1142 return -ENOIOCTLCMD
;
1146 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1147 unsigned cmd
, unsigned long arg
)
1149 IOCTL32_Command_struct __user
*arg32
=
1150 (IOCTL32_Command_struct __user
*) arg
;
1151 IOCTL_Command_struct arg64
;
1152 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
1158 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1159 sizeof(arg64
.LUN_info
));
1161 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1162 sizeof(arg64
.Request
));
1164 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1165 sizeof(arg64
.error_info
));
1166 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1167 err
|= get_user(cp
, &arg32
->buf
);
1168 arg64
.buf
= compat_ptr(cp
);
1169 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1174 err
= do_ioctl(bdev
, mode
, CCISS_PASSTHRU
, (unsigned long)p
);
1178 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1179 sizeof(arg32
->error_info
));
1185 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1186 unsigned cmd
, unsigned long arg
)
1188 BIG_IOCTL32_Command_struct __user
*arg32
=
1189 (BIG_IOCTL32_Command_struct __user
*) arg
;
1190 BIG_IOCTL_Command_struct arg64
;
1191 BIG_IOCTL_Command_struct __user
*p
=
1192 compat_alloc_user_space(sizeof(arg64
));
1196 memset(&arg64
, 0, sizeof(arg64
));
1199 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1200 sizeof(arg64
.LUN_info
));
1202 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1203 sizeof(arg64
.Request
));
1205 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1206 sizeof(arg64
.error_info
));
1207 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1208 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
1209 err
|= get_user(cp
, &arg32
->buf
);
1210 arg64
.buf
= compat_ptr(cp
);
1211 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1216 err
= do_ioctl(bdev
, mode
, CCISS_BIG_PASSTHRU
, (unsigned long)p
);
1220 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1221 sizeof(arg32
->error_info
));
1228 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1230 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1232 if (!drv
->cylinders
)
1235 geo
->heads
= drv
->heads
;
1236 geo
->sectors
= drv
->sectors
;
1237 geo
->cylinders
= drv
->cylinders
;
1241 static void check_ioctl_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
1243 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
1244 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
1245 (void)check_for_unit_attention(h
, c
);
1248 static int cciss_getpciinfo(ctlr_info_t
*h
, void __user
*argp
)
1250 cciss_pci_info_struct pciinfo
;
1254 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
1255 pciinfo
.bus
= h
->pdev
->bus
->number
;
1256 pciinfo
.dev_fn
= h
->pdev
->devfn
;
1257 pciinfo
.board_id
= h
->board_id
;
1258 if (copy_to_user(argp
, &pciinfo
, sizeof(cciss_pci_info_struct
)))
1263 static int cciss_getintinfo(ctlr_info_t
*h
, void __user
*argp
)
1265 cciss_coalint_struct intinfo
;
1269 intinfo
.delay
= readl(&h
->cfgtable
->HostWrite
.CoalIntDelay
);
1270 intinfo
.count
= readl(&h
->cfgtable
->HostWrite
.CoalIntCount
);
1272 (argp
, &intinfo
, sizeof(cciss_coalint_struct
)))
1277 static int cciss_setintinfo(ctlr_info_t
*h
, void __user
*argp
)
1279 cciss_coalint_struct intinfo
;
1280 unsigned long flags
;
1285 if (!capable(CAP_SYS_ADMIN
))
1287 if (copy_from_user(&intinfo
, argp
, sizeof(intinfo
)))
1289 if ((intinfo
.delay
== 0) && (intinfo
.count
== 0))
1291 spin_lock_irqsave(&h
->lock
, flags
);
1292 /* Update the field, and then ring the doorbell */
1293 writel(intinfo
.delay
, &(h
->cfgtable
->HostWrite
.CoalIntDelay
));
1294 writel(intinfo
.count
, &(h
->cfgtable
->HostWrite
.CoalIntCount
));
1295 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1297 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1298 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1300 udelay(1000); /* delay and try again */
1302 spin_unlock_irqrestore(&h
->lock
, flags
);
1303 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1308 static int cciss_getnodename(ctlr_info_t
*h
, void __user
*argp
)
1310 NodeName_type NodeName
;
1315 for (i
= 0; i
< 16; i
++)
1316 NodeName
[i
] = readb(&h
->cfgtable
->ServerName
[i
]);
1317 if (copy_to_user(argp
, NodeName
, sizeof(NodeName_type
)))
1322 static int cciss_setnodename(ctlr_info_t
*h
, void __user
*argp
)
1324 NodeName_type NodeName
;
1325 unsigned long flags
;
1330 if (!capable(CAP_SYS_ADMIN
))
1332 if (copy_from_user(NodeName
, argp
, sizeof(NodeName_type
)))
1334 spin_lock_irqsave(&h
->lock
, flags
);
1335 /* Update the field, and then ring the doorbell */
1336 for (i
= 0; i
< 16; i
++)
1337 writeb(NodeName
[i
], &h
->cfgtable
->ServerName
[i
]);
1338 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1339 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1340 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1342 udelay(1000); /* delay and try again */
1344 spin_unlock_irqrestore(&h
->lock
, flags
);
1345 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1350 static int cciss_getheartbeat(ctlr_info_t
*h
, void __user
*argp
)
1352 Heartbeat_type heartbeat
;
1356 heartbeat
= readl(&h
->cfgtable
->HeartBeat
);
1357 if (copy_to_user(argp
, &heartbeat
, sizeof(Heartbeat_type
)))
1362 static int cciss_getbustypes(ctlr_info_t
*h
, void __user
*argp
)
1364 BusTypes_type BusTypes
;
1368 BusTypes
= readl(&h
->cfgtable
->BusTypes
);
1369 if (copy_to_user(argp
, &BusTypes
, sizeof(BusTypes_type
)))
1374 static int cciss_getfirmver(ctlr_info_t
*h
, void __user
*argp
)
1376 FirmwareVer_type firmware
;
1380 memcpy(firmware
, h
->firm_ver
, 4);
1383 (argp
, firmware
, sizeof(FirmwareVer_type
)))
1388 static int cciss_getdrivver(ctlr_info_t
*h
, void __user
*argp
)
1390 DriverVer_type DriverVer
= DRIVER_VERSION
;
1394 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
1399 static int cciss_getluninfo(ctlr_info_t
*h
,
1400 struct gendisk
*disk
, void __user
*argp
)
1402 LogvolInfo_struct luninfo
;
1403 drive_info_struct
*drv
= get_drv(disk
);
1407 memcpy(&luninfo
.LunID
, drv
->LunID
, sizeof(luninfo
.LunID
));
1408 luninfo
.num_opens
= drv
->usage_count
;
1409 luninfo
.num_parts
= 0;
1410 if (copy_to_user(argp
, &luninfo
, sizeof(LogvolInfo_struct
)))
1415 static int cciss_passthru(ctlr_info_t
*h
, void __user
*argp
)
1417 IOCTL_Command_struct iocommand
;
1418 CommandList_struct
*c
;
1421 DECLARE_COMPLETION_ONSTACK(wait
);
1426 if (!capable(CAP_SYS_RAWIO
))
1430 (&iocommand
, argp
, sizeof(IOCTL_Command_struct
)))
1432 if ((iocommand
.buf_size
< 1) &&
1433 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
1436 if (iocommand
.buf_size
> 0) {
1437 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
1441 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
1442 /* Copy the data into the buffer we created */
1443 if (copy_from_user(buff
, iocommand
.buf
, iocommand
.buf_size
)) {
1448 memset(buff
, 0, iocommand
.buf_size
);
1450 c
= cmd_special_alloc(h
);
1455 /* Fill in the command type */
1456 c
->cmd_type
= CMD_IOCTL_PEND
;
1457 /* Fill in Command Header */
1458 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
1459 if (iocommand
.buf_size
> 0) { /* buffer to fill */
1460 c
->Header
.SGList
= 1;
1461 c
->Header
.SGTotal
= 1;
1462 } else { /* no buffers to fill */
1463 c
->Header
.SGList
= 0;
1464 c
->Header
.SGTotal
= 0;
1466 c
->Header
.LUN
= iocommand
.LUN_info
;
1467 /* use the kernel address the cmd block for tag */
1468 c
->Header
.Tag
.lower
= c
->busaddr
;
1470 /* Fill in Request block */
1471 c
->Request
= iocommand
.Request
;
1473 /* Fill in the scatter gather information */
1474 if (iocommand
.buf_size
> 0) {
1475 temp64
.val
= pci_map_single(h
->pdev
, buff
,
1476 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
1477 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
1478 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
1479 c
->SG
[0].Len
= iocommand
.buf_size
;
1480 c
->SG
[0].Ext
= 0; /* we are not chaining */
1484 enqueue_cmd_and_start_io(h
, c
);
1485 wait_for_completion(&wait
);
1487 /* unlock the buffers from DMA */
1488 temp64
.val32
.lower
= c
->SG
[0].Addr
.lower
;
1489 temp64
.val32
.upper
= c
->SG
[0].Addr
.upper
;
1490 pci_unmap_single(h
->pdev
, (dma_addr_t
) temp64
.val
, iocommand
.buf_size
,
1491 PCI_DMA_BIDIRECTIONAL
);
1492 check_ioctl_unit_attention(h
, c
);
1494 /* Copy the error information out */
1495 iocommand
.error_info
= *(c
->err_info
);
1496 if (copy_to_user(argp
, &iocommand
, sizeof(IOCTL_Command_struct
))) {
1498 cmd_special_free(h
, c
);
1502 if (iocommand
.Request
.Type
.Direction
== XFER_READ
) {
1503 /* Copy the data out of the buffer we created */
1504 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
1506 cmd_special_free(h
, c
);
1511 cmd_special_free(h
, c
);
1515 static int cciss_bigpassthru(ctlr_info_t
*h
, void __user
*argp
)
1517 BIG_IOCTL_Command_struct
*ioc
;
1518 CommandList_struct
*c
;
1519 unsigned char **buff
= NULL
;
1520 int *buff_size
= NULL
;
1525 DECLARE_COMPLETION_ONSTACK(wait
);
1528 BYTE __user
*data_ptr
;
1532 if (!capable(CAP_SYS_RAWIO
))
1534 ioc
= kmalloc(sizeof(*ioc
), GFP_KERNEL
);
1539 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
1543 if ((ioc
->buf_size
< 1) &&
1544 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
1548 /* Check kmalloc limits using all SGs */
1549 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
1553 if (ioc
->buf_size
> ioc
->malloc_size
* MAXSGENTRIES
) {
1557 buff
= kzalloc(MAXSGENTRIES
* sizeof(char *), GFP_KERNEL
);
1562 buff_size
= kmalloc(MAXSGENTRIES
* sizeof(int), GFP_KERNEL
);
1567 left
= ioc
->buf_size
;
1568 data_ptr
= ioc
->buf
;
1570 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
1571 buff_size
[sg_used
] = sz
;
1572 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
1573 if (buff
[sg_used
] == NULL
) {
1577 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
1578 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
1583 memset(buff
[sg_used
], 0, sz
);
1589 c
= cmd_special_alloc(h
);
1594 c
->cmd_type
= CMD_IOCTL_PEND
;
1595 c
->Header
.ReplyQueue
= 0;
1596 c
->Header
.SGList
= sg_used
;
1597 c
->Header
.SGTotal
= sg_used
;
1598 c
->Header
.LUN
= ioc
->LUN_info
;
1599 c
->Header
.Tag
.lower
= c
->busaddr
;
1601 c
->Request
= ioc
->Request
;
1602 for (i
= 0; i
< sg_used
; i
++) {
1603 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
], buff_size
[i
],
1604 PCI_DMA_BIDIRECTIONAL
);
1605 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
1606 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
1607 c
->SG
[i
].Len
= buff_size
[i
];
1608 c
->SG
[i
].Ext
= 0; /* we are not chaining */
1611 enqueue_cmd_and_start_io(h
, c
);
1612 wait_for_completion(&wait
);
1613 /* unlock the buffers from DMA */
1614 for (i
= 0; i
< sg_used
; i
++) {
1615 temp64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1616 temp64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1617 pci_unmap_single(h
->pdev
,
1618 (dma_addr_t
) temp64
.val
, buff_size
[i
],
1619 PCI_DMA_BIDIRECTIONAL
);
1621 check_ioctl_unit_attention(h
, c
);
1622 /* Copy the error information out */
1623 ioc
->error_info
= *(c
->err_info
);
1624 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
1625 cmd_special_free(h
, c
);
1629 if (ioc
->Request
.Type
.Direction
== XFER_READ
) {
1630 /* Copy the data out of the buffer we created */
1631 BYTE __user
*ptr
= ioc
->buf
;
1632 for (i
= 0; i
< sg_used
; i
++) {
1633 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
1634 cmd_special_free(h
, c
);
1638 ptr
+= buff_size
[i
];
1641 cmd_special_free(h
, c
);
1645 for (i
= 0; i
< sg_used
; i
++)
1654 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
1655 unsigned int cmd
, unsigned long arg
)
1657 struct gendisk
*disk
= bdev
->bd_disk
;
1658 ctlr_info_t
*h
= get_host(disk
);
1659 void __user
*argp
= (void __user
*)arg
;
1661 dev_dbg(&h
->pdev
->dev
, "cciss_ioctl: Called with cmd=%x %lx\n",
1664 case CCISS_GETPCIINFO
:
1665 return cciss_getpciinfo(h
, argp
);
1666 case CCISS_GETINTINFO
:
1667 return cciss_getintinfo(h
, argp
);
1668 case CCISS_SETINTINFO
:
1669 return cciss_setintinfo(h
, argp
);
1670 case CCISS_GETNODENAME
:
1671 return cciss_getnodename(h
, argp
);
1672 case CCISS_SETNODENAME
:
1673 return cciss_setnodename(h
, argp
);
1674 case CCISS_GETHEARTBEAT
:
1675 return cciss_getheartbeat(h
, argp
);
1676 case CCISS_GETBUSTYPES
:
1677 return cciss_getbustypes(h
, argp
);
1678 case CCISS_GETFIRMVER
:
1679 return cciss_getfirmver(h
, argp
);
1680 case CCISS_GETDRIVVER
:
1681 return cciss_getdrivver(h
, argp
);
1682 case CCISS_DEREGDISK
:
1684 case CCISS_REVALIDVOLS
:
1685 return rebuild_lun_table(h
, 0, 1);
1686 case CCISS_GETLUNINFO
:
1687 return cciss_getluninfo(h
, disk
, argp
);
1688 case CCISS_PASSTHRU
:
1689 return cciss_passthru(h
, argp
);
1690 case CCISS_BIG_PASSTHRU
:
1691 return cciss_bigpassthru(h
, argp
);
1693 /* scsi_cmd_ioctl handles these, below, though some are not */
1694 /* very meaningful for cciss. SG_IO is the main one people want. */
1696 case SG_GET_VERSION_NUM
:
1697 case SG_SET_TIMEOUT
:
1698 case SG_GET_TIMEOUT
:
1699 case SG_GET_RESERVED_SIZE
:
1700 case SG_SET_RESERVED_SIZE
:
1701 case SG_EMULATED_HOST
:
1703 case SCSI_IOCTL_SEND_COMMAND
:
1704 return scsi_cmd_ioctl(disk
->queue
, disk
, mode
, cmd
, argp
);
1706 /* scsi_cmd_ioctl would normally handle these, below, but */
1707 /* they aren't a good fit for cciss, as CD-ROMs are */
1708 /* not supported, and we don't have any bus/target/lun */
1709 /* which we present to the kernel. */
1711 case CDROM_SEND_PACKET
:
1712 case CDROMCLOSETRAY
:
1714 case SCSI_IOCTL_GET_IDLUN
:
1715 case SCSI_IOCTL_GET_BUS_NUMBER
:
1721 static void cciss_check_queues(ctlr_info_t
*h
)
1723 int start_queue
= h
->next_to_run
;
1726 /* check to see if we have maxed out the number of commands that can
1727 * be placed on the queue. If so then exit. We do this check here
1728 * in case the interrupt we serviced was from an ioctl and did not
1729 * free any new commands.
1731 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
)
1734 /* We have room on the queue for more commands. Now we need to queue
1735 * them up. We will also keep track of the next queue to run so
1736 * that every queue gets a chance to be started first.
1738 for (i
= 0; i
< h
->highest_lun
+ 1; i
++) {
1739 int curr_queue
= (start_queue
+ i
) % (h
->highest_lun
+ 1);
1740 /* make sure the disk has been added and the drive is real
1741 * because this can be called from the middle of init_one.
1743 if (!h
->drv
[curr_queue
])
1745 if (!(h
->drv
[curr_queue
]->queue
) ||
1746 !(h
->drv
[curr_queue
]->heads
))
1748 blk_start_queue(h
->gendisk
[curr_queue
]->queue
);
1750 /* check to see if we have maxed out the number of commands
1751 * that can be placed on the queue.
1753 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
) {
1754 if (curr_queue
== start_queue
) {
1756 (start_queue
+ 1) % (h
->highest_lun
+ 1);
1759 h
->next_to_run
= curr_queue
;
1766 static void cciss_softirq_done(struct request
*rq
)
1768 CommandList_struct
*c
= rq
->completion_data
;
1769 ctlr_info_t
*h
= hba
[c
->ctlr
];
1770 SGDescriptor_struct
*curr_sg
= c
->SG
;
1772 unsigned long flags
;
1776 if (c
->Request
.Type
.Direction
== XFER_READ
)
1777 ddir
= PCI_DMA_FROMDEVICE
;
1779 ddir
= PCI_DMA_TODEVICE
;
1781 /* command did not need to be retried */
1782 /* unmap the DMA mapping for all the scatter gather elements */
1783 for (i
= 0; i
< c
->Header
.SGList
; i
++) {
1784 if (curr_sg
[sg_index
].Ext
== CCISS_SG_CHAIN
) {
1785 cciss_unmap_sg_chain_block(h
, c
);
1786 /* Point to the next block */
1787 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
1790 temp64
.val32
.lower
= curr_sg
[sg_index
].Addr
.lower
;
1791 temp64
.val32
.upper
= curr_sg
[sg_index
].Addr
.upper
;
1792 pci_unmap_page(h
->pdev
, temp64
.val
, curr_sg
[sg_index
].Len
,
1797 dev_dbg(&h
->pdev
->dev
, "Done with %p\n", rq
);
1799 /* set the residual count for pc requests */
1800 if (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
1801 rq
->resid_len
= c
->err_info
->ResidualCnt
;
1803 blk_end_request_all(rq
, (rq
->errors
== 0) ? 0 : -EIO
);
1805 spin_lock_irqsave(&h
->lock
, flags
);
1807 cciss_check_queues(h
);
1808 spin_unlock_irqrestore(&h
->lock
, flags
);
1811 static inline void log_unit_to_scsi3addr(ctlr_info_t
*h
,
1812 unsigned char scsi3addr
[], uint32_t log_unit
)
1814 memcpy(scsi3addr
, h
->drv
[log_unit
]->LunID
,
1815 sizeof(h
->drv
[log_unit
]->LunID
));
1818 /* This function gets the SCSI vendor, model, and revision of a logical drive
1819 * via the inquiry page 0. Model, vendor, and rev are set to empty strings if
1820 * they cannot be read.
1822 static void cciss_get_device_descr(ctlr_info_t
*h
, int logvol
,
1823 char *vendor
, char *model
, char *rev
)
1826 InquiryData_struct
*inq_buf
;
1827 unsigned char scsi3addr
[8];
1833 inq_buf
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1837 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1838 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buf
, sizeof(*inq_buf
), 0,
1839 scsi3addr
, TYPE_CMD
);
1841 memcpy(vendor
, &inq_buf
->data_byte
[8], VENDOR_LEN
);
1842 vendor
[VENDOR_LEN
] = '\0';
1843 memcpy(model
, &inq_buf
->data_byte
[16], MODEL_LEN
);
1844 model
[MODEL_LEN
] = '\0';
1845 memcpy(rev
, &inq_buf
->data_byte
[32], REV_LEN
);
1846 rev
[REV_LEN
] = '\0';
1853 /* This function gets the serial number of a logical drive via
1854 * inquiry page 0x83. Serial no. is 16 bytes. If the serial
1855 * number cannot be had, for whatever reason, 16 bytes of 0xff
1856 * are returned instead.
1858 static void cciss_get_serial_no(ctlr_info_t
*h
, int logvol
,
1859 unsigned char *serial_no
, int buflen
)
1861 #define PAGE_83_INQ_BYTES 64
1864 unsigned char scsi3addr
[8];
1868 memset(serial_no
, 0xff, buflen
);
1869 buf
= kzalloc(PAGE_83_INQ_BYTES
, GFP_KERNEL
);
1872 memset(serial_no
, 0, buflen
);
1873 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1874 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, buf
,
1875 PAGE_83_INQ_BYTES
, 0x83, scsi3addr
, TYPE_CMD
);
1877 memcpy(serial_no
, &buf
[8], buflen
);
1883 * cciss_add_disk sets up the block device queue for a logical drive
1885 static int cciss_add_disk(ctlr_info_t
*h
, struct gendisk
*disk
,
1888 disk
->queue
= blk_init_queue(do_cciss_request
, &h
->lock
);
1890 goto init_queue_failure
;
1891 sprintf(disk
->disk_name
, "cciss/c%dd%d", h
->ctlr
, drv_index
);
1892 disk
->major
= h
->major
;
1893 disk
->first_minor
= drv_index
<< NWD_SHIFT
;
1894 disk
->fops
= &cciss_fops
;
1895 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
1897 disk
->private_data
= h
->drv
[drv_index
];
1898 disk
->driverfs_dev
= &h
->drv
[drv_index
]->dev
;
1900 /* Set up queue information */
1901 blk_queue_bounce_limit(disk
->queue
, h
->pdev
->dma_mask
);
1903 /* This is a hardware imposed limit. */
1904 blk_queue_max_segments(disk
->queue
, h
->maxsgentries
);
1906 blk_queue_max_hw_sectors(disk
->queue
, h
->cciss_max_sectors
);
1908 blk_queue_softirq_done(disk
->queue
, cciss_softirq_done
);
1910 disk
->queue
->queuedata
= h
;
1912 blk_queue_logical_block_size(disk
->queue
,
1913 h
->drv
[drv_index
]->block_size
);
1915 /* Make sure all queue data is written out before */
1916 /* setting h->drv[drv_index]->queue, as setting this */
1917 /* allows the interrupt handler to start the queue */
1919 h
->drv
[drv_index
]->queue
= disk
->queue
;
1924 blk_cleanup_queue(disk
->queue
);
1930 /* This function will check the usage_count of the drive to be updated/added.
1931 * If the usage_count is zero and it is a heretofore unknown drive, or,
1932 * the drive's capacity, geometry, or serial number has changed,
1933 * then the drive information will be updated and the disk will be
1934 * re-registered with the kernel. If these conditions don't hold,
1935 * then it will be left alone for the next reboot. The exception to this
1936 * is disk 0 which will always be left registered with the kernel since it
1937 * is also the controller node. Any changes to disk 0 will show up on
1940 static void cciss_update_drive_info(ctlr_info_t
*h
, int drv_index
,
1941 int first_time
, int via_ioctl
)
1943 struct gendisk
*disk
;
1944 InquiryData_struct
*inq_buff
= NULL
;
1945 unsigned int block_size
;
1946 sector_t total_size
;
1947 unsigned long flags
= 0;
1949 drive_info_struct
*drvinfo
;
1951 /* Get information about the disk and modify the driver structure */
1952 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1953 drvinfo
= kzalloc(sizeof(*drvinfo
), GFP_KERNEL
);
1954 if (inq_buff
== NULL
|| drvinfo
== NULL
)
1957 /* testing to see if 16-byte CDBs are already being used */
1958 if (h
->cciss_read
== CCISS_READ_16
) {
1959 cciss_read_capacity_16(h
, drv_index
,
1960 &total_size
, &block_size
);
1963 cciss_read_capacity(h
, drv_index
, &total_size
, &block_size
);
1964 /* if read_capacity returns all F's this volume is >2TB */
1965 /* in size so we switch to 16-byte CDB's for all */
1966 /* read/write ops */
1967 if (total_size
== 0xFFFFFFFFULL
) {
1968 cciss_read_capacity_16(h
, drv_index
,
1969 &total_size
, &block_size
);
1970 h
->cciss_read
= CCISS_READ_16
;
1971 h
->cciss_write
= CCISS_WRITE_16
;
1973 h
->cciss_read
= CCISS_READ_10
;
1974 h
->cciss_write
= CCISS_WRITE_10
;
1978 cciss_geometry_inquiry(h
, drv_index
, total_size
, block_size
,
1980 drvinfo
->block_size
= block_size
;
1981 drvinfo
->nr_blocks
= total_size
+ 1;
1983 cciss_get_device_descr(h
, drv_index
, drvinfo
->vendor
,
1984 drvinfo
->model
, drvinfo
->rev
);
1985 cciss_get_serial_no(h
, drv_index
, drvinfo
->serial_no
,
1986 sizeof(drvinfo
->serial_no
));
1987 /* Save the lunid in case we deregister the disk, below. */
1988 memcpy(drvinfo
->LunID
, h
->drv
[drv_index
]->LunID
,
1989 sizeof(drvinfo
->LunID
));
1991 /* Is it the same disk we already know, and nothing's changed? */
1992 if (h
->drv
[drv_index
]->raid_level
!= -1 &&
1993 ((memcmp(drvinfo
->serial_no
,
1994 h
->drv
[drv_index
]->serial_no
, 16) == 0) &&
1995 drvinfo
->block_size
== h
->drv
[drv_index
]->block_size
&&
1996 drvinfo
->nr_blocks
== h
->drv
[drv_index
]->nr_blocks
&&
1997 drvinfo
->heads
== h
->drv
[drv_index
]->heads
&&
1998 drvinfo
->sectors
== h
->drv
[drv_index
]->sectors
&&
1999 drvinfo
->cylinders
== h
->drv
[drv_index
]->cylinders
))
2000 /* The disk is unchanged, nothing to update */
2003 /* If we get here it's not the same disk, or something's changed,
2004 * so we need to * deregister it, and re-register it, if it's not
2006 * If the disk already exists then deregister it before proceeding
2007 * (unless it's the first disk (for the controller node).
2009 if (h
->drv
[drv_index
]->raid_level
!= -1 && drv_index
!= 0) {
2010 dev_warn(&h
->pdev
->dev
, "disk %d has changed.\n", drv_index
);
2011 spin_lock_irqsave(&h
->lock
, flags
);
2012 h
->drv
[drv_index
]->busy_configuring
= 1;
2013 spin_unlock_irqrestore(&h
->lock
, flags
);
2015 /* deregister_disk sets h->drv[drv_index]->queue = NULL
2016 * which keeps the interrupt handler from starting
2019 ret
= deregister_disk(h
, drv_index
, 0, via_ioctl
);
2022 /* If the disk is in use return */
2026 /* Save the new information from cciss_geometry_inquiry
2027 * and serial number inquiry. If the disk was deregistered
2028 * above, then h->drv[drv_index] will be NULL.
2030 if (h
->drv
[drv_index
] == NULL
) {
2031 drvinfo
->device_initialized
= 0;
2032 h
->drv
[drv_index
] = drvinfo
;
2033 drvinfo
= NULL
; /* so it won't be freed below. */
2035 /* special case for cxd0 */
2036 h
->drv
[drv_index
]->block_size
= drvinfo
->block_size
;
2037 h
->drv
[drv_index
]->nr_blocks
= drvinfo
->nr_blocks
;
2038 h
->drv
[drv_index
]->heads
= drvinfo
->heads
;
2039 h
->drv
[drv_index
]->sectors
= drvinfo
->sectors
;
2040 h
->drv
[drv_index
]->cylinders
= drvinfo
->cylinders
;
2041 h
->drv
[drv_index
]->raid_level
= drvinfo
->raid_level
;
2042 memcpy(h
->drv
[drv_index
]->serial_no
, drvinfo
->serial_no
, 16);
2043 memcpy(h
->drv
[drv_index
]->vendor
, drvinfo
->vendor
,
2045 memcpy(h
->drv
[drv_index
]->model
, drvinfo
->model
, MODEL_LEN
+ 1);
2046 memcpy(h
->drv
[drv_index
]->rev
, drvinfo
->rev
, REV_LEN
+ 1);
2050 disk
= h
->gendisk
[drv_index
];
2051 set_capacity(disk
, h
->drv
[drv_index
]->nr_blocks
);
2053 /* If it's not disk 0 (drv_index != 0)
2054 * or if it was disk 0, but there was previously
2055 * no actual corresponding configured logical drive
2056 * (raid_leve == -1) then we want to update the
2057 * logical drive's information.
2059 if (drv_index
|| first_time
) {
2060 if (cciss_add_disk(h
, disk
, drv_index
) != 0) {
2061 cciss_free_gendisk(h
, drv_index
);
2062 cciss_free_drive_info(h
, drv_index
);
2063 dev_warn(&h
->pdev
->dev
, "could not update disk %d\n",
2074 dev_err(&h
->pdev
->dev
, "out of memory\n");
2078 /* This function will find the first index of the controllers drive array
2079 * that has a null drv pointer and allocate the drive info struct and
2080 * will return that index This is where new drives will be added.
2081 * If the index to be returned is greater than the highest_lun index for
2082 * the controller then highest_lun is set * to this new index.
2083 * If there are no available indexes or if tha allocation fails, then -1
2084 * is returned. * "controller_node" is used to know if this is a real
2085 * logical drive, or just the controller node, which determines if this
2086 * counts towards highest_lun.
2088 static int cciss_alloc_drive_info(ctlr_info_t
*h
, int controller_node
)
2091 drive_info_struct
*drv
;
2093 /* Search for an empty slot for our drive info */
2094 for (i
= 0; i
< CISS_MAX_LUN
; i
++) {
2096 /* if not cxd0 case, and it's occupied, skip it. */
2097 if (h
->drv
[i
] && i
!= 0)
2100 * If it's cxd0 case, and drv is alloc'ed already, and a
2101 * disk is configured there, skip it.
2103 if (i
== 0 && h
->drv
[i
] && h
->drv
[i
]->raid_level
!= -1)
2107 * We've found an empty slot. Update highest_lun
2108 * provided this isn't just the fake cxd0 controller node.
2110 if (i
> h
->highest_lun
&& !controller_node
)
2113 /* If adding a real disk at cxd0, and it's already alloc'ed */
2114 if (i
== 0 && h
->drv
[i
] != NULL
)
2118 * Found an empty slot, not already alloc'ed. Allocate it.
2119 * Mark it with raid_level == -1, so we know it's new later on.
2121 drv
= kzalloc(sizeof(*drv
), GFP_KERNEL
);
2124 drv
->raid_level
= -1; /* so we know it's new */
2131 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
)
2133 kfree(h
->drv
[drv_index
]);
2134 h
->drv
[drv_index
] = NULL
;
2137 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
)
2139 put_disk(h
->gendisk
[drv_index
]);
2140 h
->gendisk
[drv_index
] = NULL
;
2143 /* cciss_add_gendisk finds a free hba[]->drv structure
2144 * and allocates a gendisk if needed, and sets the lunid
2145 * in the drvinfo structure. It returns the index into
2146 * the ->drv[] array, or -1 if none are free.
2147 * is_controller_node indicates whether highest_lun should
2148 * count this disk, or if it's only being added to provide
2149 * a means to talk to the controller in case no logical
2150 * drives have yet been configured.
2152 static int cciss_add_gendisk(ctlr_info_t
*h
, unsigned char lunid
[],
2153 int controller_node
)
2157 drv_index
= cciss_alloc_drive_info(h
, controller_node
);
2158 if (drv_index
== -1)
2161 /*Check if the gendisk needs to be allocated */
2162 if (!h
->gendisk
[drv_index
]) {
2163 h
->gendisk
[drv_index
] =
2164 alloc_disk(1 << NWD_SHIFT
);
2165 if (!h
->gendisk
[drv_index
]) {
2166 dev_err(&h
->pdev
->dev
,
2167 "could not allocate a new disk %d\n",
2169 goto err_free_drive_info
;
2172 memcpy(h
->drv
[drv_index
]->LunID
, lunid
,
2173 sizeof(h
->drv
[drv_index
]->LunID
));
2174 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
2176 /* Don't need to mark this busy because nobody */
2177 /* else knows about this disk yet to contend */
2178 /* for access to it. */
2179 h
->drv
[drv_index
]->busy_configuring
= 0;
2184 cciss_free_gendisk(h
, drv_index
);
2185 err_free_drive_info
:
2186 cciss_free_drive_info(h
, drv_index
);
2190 /* This is for the special case of a controller which
2191 * has no logical drives. In this case, we still need
2192 * to register a disk so the controller can be accessed
2193 * by the Array Config Utility.
2195 static void cciss_add_controller_node(ctlr_info_t
*h
)
2197 struct gendisk
*disk
;
2200 if (h
->gendisk
[0] != NULL
) /* already did this? Then bail. */
2203 drv_index
= cciss_add_gendisk(h
, CTLR_LUNID
, 1);
2204 if (drv_index
== -1)
2206 h
->drv
[drv_index
]->block_size
= 512;
2207 h
->drv
[drv_index
]->nr_blocks
= 0;
2208 h
->drv
[drv_index
]->heads
= 0;
2209 h
->drv
[drv_index
]->sectors
= 0;
2210 h
->drv
[drv_index
]->cylinders
= 0;
2211 h
->drv
[drv_index
]->raid_level
= -1;
2212 memset(h
->drv
[drv_index
]->serial_no
, 0, 16);
2213 disk
= h
->gendisk
[drv_index
];
2214 if (cciss_add_disk(h
, disk
, drv_index
) == 0)
2216 cciss_free_gendisk(h
, drv_index
);
2217 cciss_free_drive_info(h
, drv_index
);
2219 dev_warn(&h
->pdev
->dev
, "could not add disk 0.\n");
2223 /* This function will add and remove logical drives from the Logical
2224 * drive array of the controller and maintain persistency of ordering
2225 * so that mount points are preserved until the next reboot. This allows
2226 * for the removal of logical drives in the middle of the drive array
2227 * without a re-ordering of those drives.
2229 * h = The controller to perform the operations on
2231 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
,
2235 ReportLunData_struct
*ld_buff
= NULL
;
2241 unsigned char lunid
[8] = CTLR_LUNID
;
2242 unsigned long flags
;
2244 if (!capable(CAP_SYS_RAWIO
))
2247 /* Set busy_configuring flag for this operation */
2248 spin_lock_irqsave(&h
->lock
, flags
);
2249 if (h
->busy_configuring
) {
2250 spin_unlock_irqrestore(&h
->lock
, flags
);
2253 h
->busy_configuring
= 1;
2254 spin_unlock_irqrestore(&h
->lock
, flags
);
2256 ld_buff
= kzalloc(sizeof(ReportLunData_struct
), GFP_KERNEL
);
2257 if (ld_buff
== NULL
)
2260 return_code
= sendcmd_withirq(h
, CISS_REPORT_LOG
, ld_buff
,
2261 sizeof(ReportLunData_struct
),
2262 0, CTLR_LUNID
, TYPE_CMD
);
2264 if (return_code
== IO_OK
)
2265 listlength
= be32_to_cpu(*(__be32
*) ld_buff
->LUNListLength
);
2266 else { /* reading number of logical volumes failed */
2267 dev_warn(&h
->pdev
->dev
,
2268 "report logical volume command failed\n");
2273 num_luns
= listlength
/ 8; /* 8 bytes per entry */
2274 if (num_luns
> CISS_MAX_LUN
) {
2275 num_luns
= CISS_MAX_LUN
;
2276 dev_warn(&h
->pdev
->dev
, "more luns configured"
2277 " on controller than can be handled by"
2282 cciss_add_controller_node(h
);
2284 /* Compare controller drive array to driver's drive array
2285 * to see if any drives are missing on the controller due
2286 * to action of Array Config Utility (user deletes drive)
2287 * and deregister logical drives which have disappeared.
2289 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2293 /* skip holes in the array from already deleted drives */
2294 if (h
->drv
[i
] == NULL
)
2297 for (j
= 0; j
< num_luns
; j
++) {
2298 memcpy(lunid
, &ld_buff
->LUN
[j
][0], sizeof(lunid
));
2299 if (memcmp(h
->drv
[i
]->LunID
, lunid
,
2300 sizeof(lunid
)) == 0) {
2306 /* Deregister it from the OS, it's gone. */
2307 spin_lock_irqsave(&h
->lock
, flags
);
2308 h
->drv
[i
]->busy_configuring
= 1;
2309 spin_unlock_irqrestore(&h
->lock
, flags
);
2310 return_code
= deregister_disk(h
, i
, 1, via_ioctl
);
2311 if (h
->drv
[i
] != NULL
)
2312 h
->drv
[i
]->busy_configuring
= 0;
2316 /* Compare controller drive array to driver's drive array.
2317 * Check for updates in the drive information and any new drives
2318 * on the controller due to ACU adding logical drives, or changing
2319 * a logical drive's size, etc. Reregister any new/changed drives
2321 for (i
= 0; i
< num_luns
; i
++) {
2326 memcpy(lunid
, &ld_buff
->LUN
[i
][0], sizeof(lunid
));
2327 /* Find if the LUN is already in the drive array
2328 * of the driver. If so then update its info
2329 * if not in use. If it does not exist then find
2330 * the first free index and add it.
2332 for (j
= 0; j
<= h
->highest_lun
; j
++) {
2333 if (h
->drv
[j
] != NULL
&&
2334 memcmp(h
->drv
[j
]->LunID
, lunid
,
2335 sizeof(h
->drv
[j
]->LunID
)) == 0) {
2342 /* check if the drive was found already in the array */
2344 drv_index
= cciss_add_gendisk(h
, lunid
, 0);
2345 if (drv_index
== -1)
2348 cciss_update_drive_info(h
, drv_index
, first_time
, via_ioctl
);
2353 h
->busy_configuring
= 0;
2354 /* We return -1 here to tell the ACU that we have registered/updated
2355 * all of the drives that we can and to keep it from calling us
2360 dev_err(&h
->pdev
->dev
, "out of memory\n");
2361 h
->busy_configuring
= 0;
2365 static void cciss_clear_drive_info(drive_info_struct
*drive_info
)
2367 /* zero out the disk size info */
2368 drive_info
->nr_blocks
= 0;
2369 drive_info
->block_size
= 0;
2370 drive_info
->heads
= 0;
2371 drive_info
->sectors
= 0;
2372 drive_info
->cylinders
= 0;
2373 drive_info
->raid_level
= -1;
2374 memset(drive_info
->serial_no
, 0, sizeof(drive_info
->serial_no
));
2375 memset(drive_info
->model
, 0, sizeof(drive_info
->model
));
2376 memset(drive_info
->rev
, 0, sizeof(drive_info
->rev
));
2377 memset(drive_info
->vendor
, 0, sizeof(drive_info
->vendor
));
2379 * don't clear the LUNID though, we need to remember which
2384 /* This function will deregister the disk and it's queue from the
2385 * kernel. It must be called with the controller lock held and the
2386 * drv structures busy_configuring flag set. It's parameters are:
2388 * disk = This is the disk to be deregistered
2389 * drv = This is the drive_info_struct associated with the disk to be
2390 * deregistered. It contains information about the disk used
2392 * clear_all = This flag determines whether or not the disk information
2393 * is going to be completely cleared out and the highest_lun
2394 * reset. Sometimes we want to clear out information about
2395 * the disk in preparation for re-adding it. In this case
2396 * the highest_lun should be left unchanged and the LunID
2397 * should not be cleared.
2399 * This indicates whether we've reached this path via ioctl.
2400 * This affects the maximum usage count allowed for c0d0 to be messed with.
2401 * If this path is reached via ioctl(), then the max_usage_count will
2402 * be 1, as the process calling ioctl() has got to have the device open.
2403 * If we get here via sysfs, then the max usage count will be zero.
2405 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
2406 int clear_all
, int via_ioctl
)
2409 struct gendisk
*disk
;
2410 drive_info_struct
*drv
;
2411 int recalculate_highest_lun
;
2413 if (!capable(CAP_SYS_RAWIO
))
2416 drv
= h
->drv
[drv_index
];
2417 disk
= h
->gendisk
[drv_index
];
2419 /* make sure logical volume is NOT is use */
2420 if (clear_all
|| (h
->gendisk
[0] == disk
)) {
2421 if (drv
->usage_count
> via_ioctl
)
2423 } else if (drv
->usage_count
> 0)
2426 recalculate_highest_lun
= (drv
== h
->drv
[h
->highest_lun
]);
2428 /* invalidate the devices and deregister the disk. If it is disk
2429 * zero do not deregister it but just zero out it's values. This
2430 * allows us to delete disk zero but keep the controller registered.
2432 if (h
->gendisk
[0] != disk
) {
2433 struct request_queue
*q
= disk
->queue
;
2434 if (disk
->flags
& GENHD_FL_UP
) {
2435 cciss_destroy_ld_sysfs_entry(h
, drv_index
, 0);
2439 blk_cleanup_queue(q
);
2440 /* If clear_all is set then we are deleting the logical
2441 * drive, not just refreshing its info. For drives
2442 * other than disk 0 we will call put_disk. We do not
2443 * do this for disk 0 as we need it to be able to
2444 * configure the controller.
2447 /* This isn't pretty, but we need to find the
2448 * disk in our array and NULL our the pointer.
2449 * This is so that we will call alloc_disk if
2450 * this index is used again later.
2452 for (i
=0; i
< CISS_MAX_LUN
; i
++){
2453 if (h
->gendisk
[i
] == disk
) {
2454 h
->gendisk
[i
] = NULL
;
2461 set_capacity(disk
, 0);
2462 cciss_clear_drive_info(drv
);
2467 /* if it was the last disk, find the new hightest lun */
2468 if (clear_all
&& recalculate_highest_lun
) {
2469 int newhighest
= -1;
2470 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2471 /* if the disk has size > 0, it is available */
2472 if (h
->drv
[i
] && h
->drv
[i
]->heads
)
2475 h
->highest_lun
= newhighest
;
2480 static int __devinit
cciss_send_reset(ctlr_info_t
*h
, unsigned char *scsi3addr
,
2483 CommandList_struct
*c
;
2489 return_status
= fill_cmd(h
, c
, CCISS_RESET_MSG
, NULL
, 0, 0,
2490 CTLR_LUNID
, TYPE_MSG
);
2491 c
->Request
.CDB
[1] = reset_type
; /* fill_cmd defaults to target reset */
2492 if (return_status
!= IO_OK
) {
2493 cmd_special_free(h
, c
);
2494 return return_status
;
2497 enqueue_cmd_and_start_io(h
, c
);
2498 /* Don't wait for completion, the reset won't complete. Don't free
2499 * the command either. This is the last command we will send before
2500 * re-initializing everything, so it doesn't matter and won't leak.
2505 static int fill_cmd(ctlr_info_t
*h
, CommandList_struct
*c
, __u8 cmd
, void *buff
,
2506 size_t size
, __u8 page_code
, unsigned char *scsi3addr
,
2509 u64bit buff_dma_handle
;
2512 c
->cmd_type
= CMD_IOCTL_PEND
;
2513 c
->Header
.ReplyQueue
= 0;
2515 c
->Header
.SGList
= 1;
2516 c
->Header
.SGTotal
= 1;
2518 c
->Header
.SGList
= 0;
2519 c
->Header
.SGTotal
= 0;
2521 c
->Header
.Tag
.lower
= c
->busaddr
;
2522 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2524 c
->Request
.Type
.Type
= cmd_type
;
2525 if (cmd_type
== TYPE_CMD
) {
2528 /* are we trying to read a vital product page */
2529 if (page_code
!= 0) {
2530 c
->Request
.CDB
[1] = 0x01;
2531 c
->Request
.CDB
[2] = page_code
;
2533 c
->Request
.CDBLen
= 6;
2534 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2535 c
->Request
.Type
.Direction
= XFER_READ
;
2536 c
->Request
.Timeout
= 0;
2537 c
->Request
.CDB
[0] = CISS_INQUIRY
;
2538 c
->Request
.CDB
[4] = size
& 0xFF;
2540 case CISS_REPORT_LOG
:
2541 case CISS_REPORT_PHYS
:
2542 /* Talking to controller so It's a physical command
2543 mode = 00 target = 0. Nothing to write.
2545 c
->Request
.CDBLen
= 12;
2546 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2547 c
->Request
.Type
.Direction
= XFER_READ
;
2548 c
->Request
.Timeout
= 0;
2549 c
->Request
.CDB
[0] = cmd
;
2550 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2551 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2552 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2553 c
->Request
.CDB
[9] = size
& 0xFF;
2556 case CCISS_READ_CAPACITY
:
2557 c
->Request
.CDBLen
= 10;
2558 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2559 c
->Request
.Type
.Direction
= XFER_READ
;
2560 c
->Request
.Timeout
= 0;
2561 c
->Request
.CDB
[0] = cmd
;
2563 case CCISS_READ_CAPACITY_16
:
2564 c
->Request
.CDBLen
= 16;
2565 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2566 c
->Request
.Type
.Direction
= XFER_READ
;
2567 c
->Request
.Timeout
= 0;
2568 c
->Request
.CDB
[0] = cmd
;
2569 c
->Request
.CDB
[1] = 0x10;
2570 c
->Request
.CDB
[10] = (size
>> 24) & 0xFF;
2571 c
->Request
.CDB
[11] = (size
>> 16) & 0xFF;
2572 c
->Request
.CDB
[12] = (size
>> 8) & 0xFF;
2573 c
->Request
.CDB
[13] = size
& 0xFF;
2574 c
->Request
.Timeout
= 0;
2575 c
->Request
.CDB
[0] = cmd
;
2577 case CCISS_CACHE_FLUSH
:
2578 c
->Request
.CDBLen
= 12;
2579 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2580 c
->Request
.Type
.Direction
= XFER_WRITE
;
2581 c
->Request
.Timeout
= 0;
2582 c
->Request
.CDB
[0] = BMIC_WRITE
;
2583 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2585 case TEST_UNIT_READY
:
2586 c
->Request
.CDBLen
= 6;
2587 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2588 c
->Request
.Type
.Direction
= XFER_NONE
;
2589 c
->Request
.Timeout
= 0;
2592 dev_warn(&h
->pdev
->dev
, "Unknown Command 0x%c\n", cmd
);
2595 } else if (cmd_type
== TYPE_MSG
) {
2597 case CCISS_ABORT_MSG
:
2598 c
->Request
.CDBLen
= 12;
2599 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2600 c
->Request
.Type
.Direction
= XFER_WRITE
;
2601 c
->Request
.Timeout
= 0;
2602 c
->Request
.CDB
[0] = cmd
; /* abort */
2603 c
->Request
.CDB
[1] = 0; /* abort a command */
2604 /* buff contains the tag of the command to abort */
2605 memcpy(&c
->Request
.CDB
[4], buff
, 8);
2607 case CCISS_RESET_MSG
:
2608 c
->Request
.CDBLen
= 16;
2609 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2610 c
->Request
.Type
.Direction
= XFER_NONE
;
2611 c
->Request
.Timeout
= 0;
2612 memset(&c
->Request
.CDB
[0], 0, sizeof(c
->Request
.CDB
));
2613 c
->Request
.CDB
[0] = cmd
; /* reset */
2614 c
->Request
.CDB
[1] = CCISS_RESET_TYPE_TARGET
;
2616 case CCISS_NOOP_MSG
:
2617 c
->Request
.CDBLen
= 1;
2618 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2619 c
->Request
.Type
.Direction
= XFER_WRITE
;
2620 c
->Request
.Timeout
= 0;
2621 c
->Request
.CDB
[0] = cmd
;
2624 dev_warn(&h
->pdev
->dev
,
2625 "unknown message type %d\n", cmd
);
2629 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2632 /* Fill in the scatter gather information */
2634 buff_dma_handle
.val
= (__u64
) pci_map_single(h
->pdev
,
2636 PCI_DMA_BIDIRECTIONAL
);
2637 c
->SG
[0].Addr
.lower
= buff_dma_handle
.val32
.lower
;
2638 c
->SG
[0].Addr
.upper
= buff_dma_handle
.val32
.upper
;
2639 c
->SG
[0].Len
= size
;
2640 c
->SG
[0].Ext
= 0; /* we are not chaining */
2645 static int check_target_status(ctlr_info_t
*h
, CommandList_struct
*c
)
2647 switch (c
->err_info
->ScsiStatus
) {
2650 case SAM_STAT_CHECK_CONDITION
:
2651 switch (0xf & c
->err_info
->SenseInfo
[2]) {
2652 case 0: return IO_OK
; /* no sense */
2653 case 1: return IO_OK
; /* recovered error */
2655 if (check_for_unit_attention(h
, c
))
2656 return IO_NEEDS_RETRY
;
2657 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x "
2658 "check condition, sense key = 0x%02x\n",
2659 c
->Request
.CDB
[0], c
->err_info
->SenseInfo
[2]);
2663 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x"
2664 "scsi status = 0x%02x\n",
2665 c
->Request
.CDB
[0], c
->err_info
->ScsiStatus
);
2671 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
)
2673 int return_status
= IO_OK
;
2675 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2678 switch (c
->err_info
->CommandStatus
) {
2679 case CMD_TARGET_STATUS
:
2680 return_status
= check_target_status(h
, c
);
2682 case CMD_DATA_UNDERRUN
:
2683 case CMD_DATA_OVERRUN
:
2684 /* expected for inquiry and report lun commands */
2687 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x is "
2688 "reported invalid\n", c
->Request
.CDB
[0]);
2689 return_status
= IO_ERROR
;
2691 case CMD_PROTOCOL_ERR
:
2692 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x has "
2693 "protocol error\n", c
->Request
.CDB
[0]);
2694 return_status
= IO_ERROR
;
2696 case CMD_HARDWARE_ERR
:
2697 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2698 " hardware error\n", c
->Request
.CDB
[0]);
2699 return_status
= IO_ERROR
;
2701 case CMD_CONNECTION_LOST
:
2702 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2703 "connection lost\n", c
->Request
.CDB
[0]);
2704 return_status
= IO_ERROR
;
2707 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x was "
2708 "aborted\n", c
->Request
.CDB
[0]);
2709 return_status
= IO_ERROR
;
2711 case CMD_ABORT_FAILED
:
2712 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x reports "
2713 "abort failed\n", c
->Request
.CDB
[0]);
2714 return_status
= IO_ERROR
;
2716 case CMD_UNSOLICITED_ABORT
:
2717 dev_warn(&h
->pdev
->dev
, "unsolicited abort 0x%02x\n",
2719 return_status
= IO_NEEDS_RETRY
;
2721 case CMD_UNABORTABLE
:
2722 dev_warn(&h
->pdev
->dev
, "cmd unabortable\n");
2723 return_status
= IO_ERROR
;
2726 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x returned "
2727 "unknown status %x\n", c
->Request
.CDB
[0],
2728 c
->err_info
->CommandStatus
);
2729 return_status
= IO_ERROR
;
2731 return return_status
;
2734 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
2737 DECLARE_COMPLETION_ONSTACK(wait
);
2738 u64bit buff_dma_handle
;
2739 int return_status
= IO_OK
;
2743 enqueue_cmd_and_start_io(h
, c
);
2745 wait_for_completion(&wait
);
2747 if (c
->err_info
->CommandStatus
== 0 || !attempt_retry
)
2750 return_status
= process_sendcmd_error(h
, c
);
2752 if (return_status
== IO_NEEDS_RETRY
&&
2753 c
->retry_count
< MAX_CMD_RETRIES
) {
2754 dev_warn(&h
->pdev
->dev
, "retrying 0x%02x\n",
2757 /* erase the old error information */
2758 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
2759 return_status
= IO_OK
;
2760 INIT_COMPLETION(wait
);
2765 /* unlock the buffers from DMA */
2766 buff_dma_handle
.val32
.lower
= c
->SG
[0].Addr
.lower
;
2767 buff_dma_handle
.val32
.upper
= c
->SG
[0].Addr
.upper
;
2768 pci_unmap_single(h
->pdev
, (dma_addr_t
) buff_dma_handle
.val
,
2769 c
->SG
[0].Len
, PCI_DMA_BIDIRECTIONAL
);
2770 return return_status
;
2773 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
2774 __u8 page_code
, unsigned char scsi3addr
[],
2777 CommandList_struct
*c
;
2780 c
= cmd_special_alloc(h
);
2783 return_status
= fill_cmd(h
, c
, cmd
, buff
, size
, page_code
,
2784 scsi3addr
, cmd_type
);
2785 if (return_status
== IO_OK
)
2786 return_status
= sendcmd_withirq_core(h
, c
, 1);
2788 cmd_special_free(h
, c
);
2789 return return_status
;
2792 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
2793 sector_t total_size
,
2794 unsigned int block_size
,
2795 InquiryData_struct
*inq_buff
,
2796 drive_info_struct
*drv
)
2800 unsigned char scsi3addr
[8];
2802 memset(inq_buff
, 0, sizeof(InquiryData_struct
));
2803 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2804 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
2805 sizeof(*inq_buff
), 0xC1, scsi3addr
, TYPE_CMD
);
2806 if (return_code
== IO_OK
) {
2807 if (inq_buff
->data_byte
[8] == 0xFF) {
2808 dev_warn(&h
->pdev
->dev
,
2809 "reading geometry failed, volume "
2810 "does not support reading geometry\n");
2812 drv
->sectors
= 32; /* Sectors per track */
2813 drv
->cylinders
= total_size
+ 1;
2814 drv
->raid_level
= RAID_UNKNOWN
;
2816 drv
->heads
= inq_buff
->data_byte
[6];
2817 drv
->sectors
= inq_buff
->data_byte
[7];
2818 drv
->cylinders
= (inq_buff
->data_byte
[4] & 0xff) << 8;
2819 drv
->cylinders
+= inq_buff
->data_byte
[5];
2820 drv
->raid_level
= inq_buff
->data_byte
[8];
2822 drv
->block_size
= block_size
;
2823 drv
->nr_blocks
= total_size
+ 1;
2824 t
= drv
->heads
* drv
->sectors
;
2826 sector_t real_size
= total_size
+ 1;
2827 unsigned long rem
= sector_div(real_size
, t
);
2830 drv
->cylinders
= real_size
;
2832 } else { /* Get geometry failed */
2833 dev_warn(&h
->pdev
->dev
, "reading geometry failed\n");
2838 cciss_read_capacity(ctlr_info_t
*h
, int logvol
, sector_t
*total_size
,
2839 unsigned int *block_size
)
2841 ReadCapdata_struct
*buf
;
2843 unsigned char scsi3addr
[8];
2845 buf
= kzalloc(sizeof(ReadCapdata_struct
), GFP_KERNEL
);
2847 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2851 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2852 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY
, buf
,
2853 sizeof(ReadCapdata_struct
), 0, scsi3addr
, TYPE_CMD
);
2854 if (return_code
== IO_OK
) {
2855 *total_size
= be32_to_cpu(*(__be32
*) buf
->total_size
);
2856 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2857 } else { /* read capacity command failed */
2858 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2860 *block_size
= BLOCK_SIZE
;
2865 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
2866 sector_t
*total_size
, unsigned int *block_size
)
2868 ReadCapdata_struct_16
*buf
;
2870 unsigned char scsi3addr
[8];
2872 buf
= kzalloc(sizeof(ReadCapdata_struct_16
), GFP_KERNEL
);
2874 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2878 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2879 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY_16
,
2880 buf
, sizeof(ReadCapdata_struct_16
),
2881 0, scsi3addr
, TYPE_CMD
);
2882 if (return_code
== IO_OK
) {
2883 *total_size
= be64_to_cpu(*(__be64
*) buf
->total_size
);
2884 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2885 } else { /* read capacity command failed */
2886 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2888 *block_size
= BLOCK_SIZE
;
2890 dev_info(&h
->pdev
->dev
, " blocks= %llu block_size= %d\n",
2891 (unsigned long long)*total_size
+1, *block_size
);
2895 static int cciss_revalidate(struct gendisk
*disk
)
2897 ctlr_info_t
*h
= get_host(disk
);
2898 drive_info_struct
*drv
= get_drv(disk
);
2901 unsigned int block_size
;
2902 sector_t total_size
;
2903 InquiryData_struct
*inq_buff
= NULL
;
2905 for (logvol
= 0; logvol
<= h
->highest_lun
; logvol
++) {
2906 if (!h
->drv
[logvol
])
2908 if (memcmp(h
->drv
[logvol
]->LunID
, drv
->LunID
,
2909 sizeof(drv
->LunID
)) == 0) {
2918 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
2919 if (inq_buff
== NULL
) {
2920 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2923 if (h
->cciss_read
== CCISS_READ_10
) {
2924 cciss_read_capacity(h
, logvol
,
2925 &total_size
, &block_size
);
2927 cciss_read_capacity_16(h
, logvol
,
2928 &total_size
, &block_size
);
2930 cciss_geometry_inquiry(h
, logvol
, total_size
, block_size
,
2933 blk_queue_logical_block_size(drv
->queue
, drv
->block_size
);
2934 set_capacity(disk
, drv
->nr_blocks
);
2941 * Map (physical) PCI mem into (virtual) kernel space
2943 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
2945 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
2946 ulong page_offs
= ((ulong
) base
) - page_base
;
2947 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
2949 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
2953 * Takes jobs of the Q and sends them to the hardware, then puts it on
2954 * the Q to wait for completion.
2956 static void start_io(ctlr_info_t
*h
)
2958 CommandList_struct
*c
;
2960 while (!list_empty(&h
->reqQ
)) {
2961 c
= list_entry(h
->reqQ
.next
, CommandList_struct
, list
);
2962 /* can't do anything if fifo is full */
2963 if ((h
->access
.fifo_full(h
))) {
2964 dev_warn(&h
->pdev
->dev
, "fifo full\n");
2968 /* Get the first entry from the Request Q */
2972 /* Tell the controller execute command */
2973 h
->access
.submit_command(h
, c
);
2975 /* Put job onto the completed Q */
2980 /* Assumes that h->lock is held. */
2981 /* Zeros out the error record and then resends the command back */
2982 /* to the controller */
2983 static inline void resend_cciss_cmd(ctlr_info_t
*h
, CommandList_struct
*c
)
2985 /* erase the old error information */
2986 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
2988 /* add it to software queue and then send it to the controller */
2991 if (h
->Qdepth
> h
->maxQsinceinit
)
2992 h
->maxQsinceinit
= h
->Qdepth
;
2997 static inline unsigned int make_status_bytes(unsigned int scsi_status_byte
,
2998 unsigned int msg_byte
, unsigned int host_byte
,
2999 unsigned int driver_byte
)
3001 /* inverse of macros in scsi.h */
3002 return (scsi_status_byte
& 0xff) |
3003 ((msg_byte
& 0xff) << 8) |
3004 ((host_byte
& 0xff) << 16) |
3005 ((driver_byte
& 0xff) << 24);
3008 static inline int evaluate_target_status(ctlr_info_t
*h
,
3009 CommandList_struct
*cmd
, int *retry_cmd
)
3011 unsigned char sense_key
;
3012 unsigned char status_byte
, msg_byte
, host_byte
, driver_byte
;
3016 /* If we get in here, it means we got "target status", that is, scsi status */
3017 status_byte
= cmd
->err_info
->ScsiStatus
;
3018 driver_byte
= DRIVER_OK
;
3019 msg_byte
= cmd
->err_info
->CommandStatus
; /* correct? seems too device specific */
3021 if (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
3022 host_byte
= DID_PASSTHROUGH
;
3026 error_value
= make_status_bytes(status_byte
, msg_byte
,
3027 host_byte
, driver_byte
);
3029 if (cmd
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
) {
3030 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
)
3031 dev_warn(&h
->pdev
->dev
, "cmd %p "
3032 "has SCSI Status 0x%x\n",
3033 cmd
, cmd
->err_info
->ScsiStatus
);
3037 /* check the sense key */
3038 sense_key
= 0xf & cmd
->err_info
->SenseInfo
[2];
3039 /* no status or recovered error */
3040 if (((sense_key
== 0x0) || (sense_key
== 0x1)) &&
3041 (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
))
3044 if (check_for_unit_attention(h
, cmd
)) {
3045 *retry_cmd
= !(cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
);
3049 /* Not SG_IO or similar? */
3050 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
) {
3051 if (error_value
!= 0)
3052 dev_warn(&h
->pdev
->dev
, "cmd %p has CHECK CONDITION"
3053 " sense key = 0x%x\n", cmd
, sense_key
);
3057 /* SG_IO or similar, copy sense data back */
3058 if (cmd
->rq
->sense
) {
3059 if (cmd
->rq
->sense_len
> cmd
->err_info
->SenseLen
)
3060 cmd
->rq
->sense_len
= cmd
->err_info
->SenseLen
;
3061 memcpy(cmd
->rq
->sense
, cmd
->err_info
->SenseInfo
,
3062 cmd
->rq
->sense_len
);
3064 cmd
->rq
->sense_len
= 0;
3069 /* checks the status of the job and calls complete buffers to mark all
3070 * buffers for the completed job. Note that this function does not need
3071 * to hold the hba/queue lock.
3073 static inline void complete_command(ctlr_info_t
*h
, CommandList_struct
*cmd
,
3077 struct request
*rq
= cmd
->rq
;
3082 rq
->errors
= make_status_bytes(0, 0, 0, DRIVER_TIMEOUT
);
3084 if (cmd
->err_info
->CommandStatus
== 0) /* no error has occurred */
3085 goto after_error_processing
;
3087 switch (cmd
->err_info
->CommandStatus
) {
3088 case CMD_TARGET_STATUS
:
3089 rq
->errors
= evaluate_target_status(h
, cmd
, &retry_cmd
);
3091 case CMD_DATA_UNDERRUN
:
3092 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
) {
3093 dev_warn(&h
->pdev
->dev
, "cmd %p has"
3094 " completed with data underrun "
3096 cmd
->rq
->resid_len
= cmd
->err_info
->ResidualCnt
;
3099 case CMD_DATA_OVERRUN
:
3100 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
)
3101 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has"
3102 " completed with data overrun "
3106 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p is "
3107 "reported invalid\n", cmd
);
3108 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3109 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3110 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3111 DID_PASSTHROUGH
: DID_ERROR
);
3113 case CMD_PROTOCOL_ERR
:
3114 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has "
3115 "protocol error\n", cmd
);
3116 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3117 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3118 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3119 DID_PASSTHROUGH
: DID_ERROR
);
3121 case CMD_HARDWARE_ERR
:
3122 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3123 " hardware error\n", cmd
);
3124 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3125 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3126 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3127 DID_PASSTHROUGH
: DID_ERROR
);
3129 case CMD_CONNECTION_LOST
:
3130 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3131 "connection lost\n", cmd
);
3132 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3133 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3134 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3135 DID_PASSTHROUGH
: DID_ERROR
);
3138 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p was "
3140 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3141 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3142 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3143 DID_PASSTHROUGH
: DID_ABORT
);
3145 case CMD_ABORT_FAILED
:
3146 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p reports "
3147 "abort failed\n", cmd
);
3148 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3149 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3150 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3151 DID_PASSTHROUGH
: DID_ERROR
);
3153 case CMD_UNSOLICITED_ABORT
:
3154 dev_warn(&h
->pdev
->dev
, "cciss%d: unsolicited "
3155 "abort %p\n", h
->ctlr
, cmd
);
3156 if (cmd
->retry_count
< MAX_CMD_RETRIES
) {
3158 dev_warn(&h
->pdev
->dev
, "retrying %p\n", cmd
);
3161 dev_warn(&h
->pdev
->dev
,
3162 "%p retried too many times\n", cmd
);
3163 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3164 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3165 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3166 DID_PASSTHROUGH
: DID_ABORT
);
3169 dev_warn(&h
->pdev
->dev
, "cmd %p timedout\n", cmd
);
3170 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3171 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3172 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3173 DID_PASSTHROUGH
: DID_ERROR
);
3175 case CMD_UNABORTABLE
:
3176 dev_warn(&h
->pdev
->dev
, "cmd %p unabortable\n", cmd
);
3177 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3178 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3179 cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
?
3180 DID_PASSTHROUGH
: DID_ERROR
);
3183 dev_warn(&h
->pdev
->dev
, "cmd %p returned "
3184 "unknown status %x\n", cmd
,
3185 cmd
->err_info
->CommandStatus
);
3186 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3187 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3188 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3189 DID_PASSTHROUGH
: DID_ERROR
);
3192 after_error_processing
:
3194 /* We need to return this command */
3196 resend_cciss_cmd(h
, cmd
);
3199 cmd
->rq
->completion_data
= cmd
;
3200 blk_complete_request(cmd
->rq
);
3203 static inline u32
cciss_tag_contains_index(u32 tag
)
3205 #define DIRECT_LOOKUP_BIT 0x10
3206 return tag
& DIRECT_LOOKUP_BIT
;
3209 static inline u32
cciss_tag_to_index(u32 tag
)
3211 #define DIRECT_LOOKUP_SHIFT 5
3212 return tag
>> DIRECT_LOOKUP_SHIFT
;
3215 static inline u32
cciss_tag_discard_error_bits(ctlr_info_t
*h
, u32 tag
)
3217 #define CCISS_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
3218 #define CCISS_SIMPLE_ERROR_BITS 0x03
3219 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
3220 return tag
& ~CCISS_PERF_ERROR_BITS
;
3221 return tag
& ~CCISS_SIMPLE_ERROR_BITS
;
3224 static inline void cciss_mark_tag_indexed(u32
*tag
)
3226 *tag
|= DIRECT_LOOKUP_BIT
;
3229 static inline void cciss_set_tag_index(u32
*tag
, u32 index
)
3231 *tag
|= (index
<< DIRECT_LOOKUP_SHIFT
);
3235 * Get a request and submit it to the controller.
3237 static void do_cciss_request(struct request_queue
*q
)
3239 ctlr_info_t
*h
= q
->queuedata
;
3240 CommandList_struct
*c
;
3243 struct request
*creq
;
3245 struct scatterlist
*tmp_sg
;
3246 SGDescriptor_struct
*curr_sg
;
3247 drive_info_struct
*drv
;
3253 creq
= blk_peek_request(q
);
3257 BUG_ON(creq
->nr_phys_segments
> h
->maxsgentries
);
3263 blk_start_request(creq
);
3265 tmp_sg
= h
->scatter_list
[c
->cmdindex
];
3266 spin_unlock_irq(q
->queue_lock
);
3268 c
->cmd_type
= CMD_RWREQ
;
3271 /* fill in the request */
3272 drv
= creq
->rq_disk
->private_data
;
3273 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
3274 /* got command from pool, so use the command block index instead */
3275 /* for direct lookups. */
3276 /* The first 2 bits are reserved for controller error reporting. */
3277 cciss_set_tag_index(&c
->Header
.Tag
.lower
, c
->cmdindex
);
3278 cciss_mark_tag_indexed(&c
->Header
.Tag
.lower
);
3279 memcpy(&c
->Header
.LUN
, drv
->LunID
, sizeof(drv
->LunID
));
3280 c
->Request
.CDBLen
= 10; /* 12 byte commands not in FW yet; */
3281 c
->Request
.Type
.Type
= TYPE_CMD
; /* It is a command. */
3282 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3283 c
->Request
.Type
.Direction
=
3284 (rq_data_dir(creq
) == READ
) ? XFER_READ
: XFER_WRITE
;
3285 c
->Request
.Timeout
= 0; /* Don't time out */
3287 (rq_data_dir(creq
) == READ
) ? h
->cciss_read
: h
->cciss_write
;
3288 start_blk
= blk_rq_pos(creq
);
3289 dev_dbg(&h
->pdev
->dev
, "sector =%d nr_sectors=%d\n",
3290 (int)blk_rq_pos(creq
), (int)blk_rq_sectors(creq
));
3291 sg_init_table(tmp_sg
, h
->maxsgentries
);
3292 seg
= blk_rq_map_sg(q
, creq
, tmp_sg
);
3294 /* get the DMA records for the setup */
3295 if (c
->Request
.Type
.Direction
== XFER_READ
)
3296 dir
= PCI_DMA_FROMDEVICE
;
3298 dir
= PCI_DMA_TODEVICE
;
3304 for (i
= 0; i
< seg
; i
++) {
3305 if (((sg_index
+1) == (h
->max_cmd_sgentries
)) &&
3306 !chained
&& ((seg
- i
) > 1)) {
3307 /* Point to next chain block. */
3308 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
3312 curr_sg
[sg_index
].Len
= tmp_sg
[i
].length
;
3313 temp64
.val
= (__u64
) pci_map_page(h
->pdev
, sg_page(&tmp_sg
[i
]),
3315 tmp_sg
[i
].length
, dir
);
3316 curr_sg
[sg_index
].Addr
.lower
= temp64
.val32
.lower
;
3317 curr_sg
[sg_index
].Addr
.upper
= temp64
.val32
.upper
;
3318 curr_sg
[sg_index
].Ext
= 0; /* we are not chaining */
3322 cciss_map_sg_chain_block(h
, c
, h
->cmd_sg_list
[c
->cmdindex
],
3323 (seg
- (h
->max_cmd_sgentries
- 1)) *
3324 sizeof(SGDescriptor_struct
));
3326 /* track how many SG entries we are using */
3330 dev_dbg(&h
->pdev
->dev
, "Submitting %u sectors in %d segments "
3332 blk_rq_sectors(creq
), seg
, chained
);
3334 c
->Header
.SGTotal
= seg
+ chained
;
3335 if (seg
<= h
->max_cmd_sgentries
)
3336 c
->Header
.SGList
= c
->Header
.SGTotal
;
3338 c
->Header
.SGList
= h
->max_cmd_sgentries
;
3339 set_performant_mode(h
, c
);
3341 if (likely(creq
->cmd_type
== REQ_TYPE_FS
)) {
3342 if(h
->cciss_read
== CCISS_READ_10
) {
3343 c
->Request
.CDB
[1] = 0;
3344 c
->Request
.CDB
[2] = (start_blk
>> 24) & 0xff; /* MSB */
3345 c
->Request
.CDB
[3] = (start_blk
>> 16) & 0xff;
3346 c
->Request
.CDB
[4] = (start_blk
>> 8) & 0xff;
3347 c
->Request
.CDB
[5] = start_blk
& 0xff;
3348 c
->Request
.CDB
[6] = 0; /* (sect >> 24) & 0xff; MSB */
3349 c
->Request
.CDB
[7] = (blk_rq_sectors(creq
) >> 8) & 0xff;
3350 c
->Request
.CDB
[8] = blk_rq_sectors(creq
) & 0xff;
3351 c
->Request
.CDB
[9] = c
->Request
.CDB
[11] = c
->Request
.CDB
[12] = 0;
3353 u32 upper32
= upper_32_bits(start_blk
);
3355 c
->Request
.CDBLen
= 16;
3356 c
->Request
.CDB
[1]= 0;
3357 c
->Request
.CDB
[2]= (upper32
>> 24) & 0xff; /* MSB */
3358 c
->Request
.CDB
[3]= (upper32
>> 16) & 0xff;
3359 c
->Request
.CDB
[4]= (upper32
>> 8) & 0xff;
3360 c
->Request
.CDB
[5]= upper32
& 0xff;
3361 c
->Request
.CDB
[6]= (start_blk
>> 24) & 0xff;
3362 c
->Request
.CDB
[7]= (start_blk
>> 16) & 0xff;
3363 c
->Request
.CDB
[8]= (start_blk
>> 8) & 0xff;
3364 c
->Request
.CDB
[9]= start_blk
& 0xff;
3365 c
->Request
.CDB
[10]= (blk_rq_sectors(creq
) >> 24) & 0xff;
3366 c
->Request
.CDB
[11]= (blk_rq_sectors(creq
) >> 16) & 0xff;
3367 c
->Request
.CDB
[12]= (blk_rq_sectors(creq
) >> 8) & 0xff;
3368 c
->Request
.CDB
[13]= blk_rq_sectors(creq
) & 0xff;
3369 c
->Request
.CDB
[14] = c
->Request
.CDB
[15] = 0;
3371 } else if (creq
->cmd_type
== REQ_TYPE_BLOCK_PC
) {
3372 c
->Request
.CDBLen
= creq
->cmd_len
;
3373 memcpy(c
->Request
.CDB
, creq
->cmd
, BLK_MAX_CDB
);
3375 dev_warn(&h
->pdev
->dev
, "bad request type %d\n",
3380 spin_lock_irq(q
->queue_lock
);
3384 if (h
->Qdepth
> h
->maxQsinceinit
)
3385 h
->maxQsinceinit
= h
->Qdepth
;
3391 /* We will already have the driver lock here so not need
3397 static inline unsigned long get_next_completion(ctlr_info_t
*h
)
3399 return h
->access
.command_completed(h
);
3402 static inline int interrupt_pending(ctlr_info_t
*h
)
3404 return h
->access
.intr_pending(h
);
3407 static inline long interrupt_not_for_us(ctlr_info_t
*h
)
3409 return ((h
->access
.intr_pending(h
) == 0) ||
3410 (h
->interrupts_enabled
== 0));
3413 static inline int bad_tag(ctlr_info_t
*h
, u32 tag_index
,
3416 if (unlikely(tag_index
>= h
->nr_cmds
)) {
3417 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
3423 static inline void finish_cmd(ctlr_info_t
*h
, CommandList_struct
*c
,
3427 if (likely(c
->cmd_type
== CMD_RWREQ
))
3428 complete_command(h
, c
, 0);
3429 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3430 complete(c
->waiting
);
3431 #ifdef CONFIG_CISS_SCSI_TAPE
3432 else if (c
->cmd_type
== CMD_SCSI
)
3433 complete_scsi_command(c
, 0, raw_tag
);
3437 static inline u32
next_command(ctlr_info_t
*h
)
3441 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
3442 return h
->access
.command_completed(h
);
3444 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
3445 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
3446 (h
->reply_pool_head
)++;
3447 h
->commands_outstanding
--;
3451 /* Check for wraparound */
3452 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
3453 h
->reply_pool_head
= h
->reply_pool
;
3454 h
->reply_pool_wraparound
^= 1;
3459 /* process completion of an indexed ("direct lookup") command */
3460 static inline u32
process_indexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3463 CommandList_struct
*c
;
3465 tag_index
= cciss_tag_to_index(raw_tag
);
3466 if (bad_tag(h
, tag_index
, raw_tag
))
3467 return next_command(h
);
3468 c
= h
->cmd_pool
+ tag_index
;
3469 finish_cmd(h
, c
, raw_tag
);
3470 return next_command(h
);
3473 /* process completion of a non-indexed command */
3474 static inline u32
process_nonindexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3476 CommandList_struct
*c
= NULL
;
3477 __u32 busaddr_masked
, tag_masked
;
3479 tag_masked
= cciss_tag_discard_error_bits(h
, raw_tag
);
3480 list_for_each_entry(c
, &h
->cmpQ
, list
) {
3481 busaddr_masked
= cciss_tag_discard_error_bits(h
, c
->busaddr
);
3482 if (busaddr_masked
== tag_masked
) {
3483 finish_cmd(h
, c
, raw_tag
);
3484 return next_command(h
);
3487 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3488 return next_command(h
);
3491 /* Some controllers, like p400, will give us one interrupt
3492 * after a soft reset, even if we turned interrupts off.
3493 * Only need to check for this in the cciss_xxx_discard_completions
3496 static int ignore_bogus_interrupt(ctlr_info_t
*h
)
3498 if (likely(!reset_devices
))
3501 if (likely(h
->interrupts_enabled
))
3504 dev_info(&h
->pdev
->dev
, "Received interrupt while interrupts disabled "
3505 "(known firmware bug.) Ignoring.\n");
3510 static irqreturn_t
cciss_intx_discard_completions(int irq
, void *dev_id
)
3512 ctlr_info_t
*h
= dev_id
;
3513 unsigned long flags
;
3516 if (ignore_bogus_interrupt(h
))
3519 if (interrupt_not_for_us(h
))
3521 spin_lock_irqsave(&h
->lock
, flags
);
3522 while (interrupt_pending(h
)) {
3523 raw_tag
= get_next_completion(h
);
3524 while (raw_tag
!= FIFO_EMPTY
)
3525 raw_tag
= next_command(h
);
3527 spin_unlock_irqrestore(&h
->lock
, flags
);
3531 static irqreturn_t
cciss_msix_discard_completions(int irq
, void *dev_id
)
3533 ctlr_info_t
*h
= dev_id
;
3534 unsigned long flags
;
3537 if (ignore_bogus_interrupt(h
))
3540 spin_lock_irqsave(&h
->lock
, flags
);
3541 raw_tag
= get_next_completion(h
);
3542 while (raw_tag
!= FIFO_EMPTY
)
3543 raw_tag
= next_command(h
);
3544 spin_unlock_irqrestore(&h
->lock
, flags
);
3548 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
)
3550 ctlr_info_t
*h
= dev_id
;
3551 unsigned long flags
;
3554 if (interrupt_not_for_us(h
))
3556 spin_lock_irqsave(&h
->lock
, flags
);
3557 while (interrupt_pending(h
)) {
3558 raw_tag
= get_next_completion(h
);
3559 while (raw_tag
!= FIFO_EMPTY
) {
3560 if (cciss_tag_contains_index(raw_tag
))
3561 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3563 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3566 spin_unlock_irqrestore(&h
->lock
, flags
);
3570 /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never
3571 * check the interrupt pending register because it is not set.
3573 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
)
3575 ctlr_info_t
*h
= dev_id
;
3576 unsigned long flags
;
3579 spin_lock_irqsave(&h
->lock
, flags
);
3580 raw_tag
= get_next_completion(h
);
3581 while (raw_tag
!= FIFO_EMPTY
) {
3582 if (cciss_tag_contains_index(raw_tag
))
3583 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3585 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3587 spin_unlock_irqrestore(&h
->lock
, flags
);
3592 * add_to_scan_list() - add controller to rescan queue
3593 * @h: Pointer to the controller.
3595 * Adds the controller to the rescan queue if not already on the queue.
3597 * returns 1 if added to the queue, 0 if skipped (could be on the
3598 * queue already, or the controller could be initializing or shutting
3601 static int add_to_scan_list(struct ctlr_info
*h
)
3603 struct ctlr_info
*test_h
;
3607 if (h
->busy_initializing
)
3610 if (!mutex_trylock(&h
->busy_shutting_down
))
3613 mutex_lock(&scan_mutex
);
3614 list_for_each_entry(test_h
, &scan_q
, scan_list
) {
3620 if (!found
&& !h
->busy_scanning
) {
3621 INIT_COMPLETION(h
->scan_wait
);
3622 list_add_tail(&h
->scan_list
, &scan_q
);
3625 mutex_unlock(&scan_mutex
);
3626 mutex_unlock(&h
->busy_shutting_down
);
3632 * remove_from_scan_list() - remove controller from rescan queue
3633 * @h: Pointer to the controller.
3635 * Removes the controller from the rescan queue if present. Blocks if
3636 * the controller is currently conducting a rescan. The controller
3637 * can be in one of three states:
3638 * 1. Doesn't need a scan
3639 * 2. On the scan list, but not scanning yet (we remove it)
3640 * 3. Busy scanning (and not on the list). In this case we want to wait for
3641 * the scan to complete to make sure the scanning thread for this
3642 * controller is completely idle.
3644 static void remove_from_scan_list(struct ctlr_info
*h
)
3646 struct ctlr_info
*test_h
, *tmp_h
;
3648 mutex_lock(&scan_mutex
);
3649 list_for_each_entry_safe(test_h
, tmp_h
, &scan_q
, scan_list
) {
3650 if (test_h
== h
) { /* state 2. */
3651 list_del(&h
->scan_list
);
3652 complete_all(&h
->scan_wait
);
3653 mutex_unlock(&scan_mutex
);
3657 if (h
->busy_scanning
) { /* state 3. */
3658 mutex_unlock(&scan_mutex
);
3659 wait_for_completion(&h
->scan_wait
);
3660 } else { /* state 1, nothing to do. */
3661 mutex_unlock(&scan_mutex
);
3666 * scan_thread() - kernel thread used to rescan controllers
3669 * A kernel thread used scan for drive topology changes on
3670 * controllers. The thread processes only one controller at a time
3671 * using a queue. Controllers are added to the queue using
3672 * add_to_scan_list() and removed from the queue either after done
3673 * processing or using remove_from_scan_list().
3677 static int scan_thread(void *data
)
3679 struct ctlr_info
*h
;
3682 set_current_state(TASK_INTERRUPTIBLE
);
3684 if (kthread_should_stop())
3688 mutex_lock(&scan_mutex
);
3689 if (list_empty(&scan_q
)) {
3690 mutex_unlock(&scan_mutex
);
3694 h
= list_entry(scan_q
.next
,
3697 list_del(&h
->scan_list
);
3698 h
->busy_scanning
= 1;
3699 mutex_unlock(&scan_mutex
);
3701 rebuild_lun_table(h
, 0, 0);
3702 complete_all(&h
->scan_wait
);
3703 mutex_lock(&scan_mutex
);
3704 h
->busy_scanning
= 0;
3705 mutex_unlock(&scan_mutex
);
3712 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
3714 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
3717 switch (c
->err_info
->SenseInfo
[12]) {
3719 dev_warn(&h
->pdev
->dev
, "a state change "
3720 "detected, command retried\n");
3724 dev_warn(&h
->pdev
->dev
, "LUN failure "
3725 "detected, action required\n");
3728 case REPORT_LUNS_CHANGED
:
3729 dev_warn(&h
->pdev
->dev
, "report LUN data changed\n");
3731 * Here, we could call add_to_scan_list and wake up the scan thread,
3732 * except that it's quite likely that we will get more than one
3733 * REPORT_LUNS_CHANGED condition in quick succession, which means
3734 * that those which occur after the first one will likely happen
3735 * *during* the scan_thread's rescan. And the rescan code is not
3736 * robust enough to restart in the middle, undoing what it has already
3737 * done, and it's not clear that it's even possible to do this, since
3738 * part of what it does is notify the block layer, which starts
3739 * doing it's own i/o to read partition tables and so on, and the
3740 * driver doesn't have visibility to know what might need undoing.
3741 * In any event, if possible, it is horribly complicated to get right
3742 * so we just don't do it for now.
3744 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
3748 case POWER_OR_RESET
:
3749 dev_warn(&h
->pdev
->dev
,
3750 "a power on or device reset detected\n");
3753 case UNIT_ATTENTION_CLEARED
:
3754 dev_warn(&h
->pdev
->dev
,
3755 "unit attention cleared by another initiator\n");
3759 dev_warn(&h
->pdev
->dev
, "unknown unit attention detected\n");
3765 * We cannot read the structure directly, for portability we must use
3767 * This is for debug only.
3769 static void print_cfg_table(ctlr_info_t
*h
)
3773 CfgTable_struct
*tb
= h
->cfgtable
;
3775 dev_dbg(&h
->pdev
->dev
, "Controller Configuration information\n");
3776 dev_dbg(&h
->pdev
->dev
, "------------------------------------\n");
3777 for (i
= 0; i
< 4; i
++)
3778 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3779 temp_name
[4] = '\0';
3780 dev_dbg(&h
->pdev
->dev
, " Signature = %s\n", temp_name
);
3781 dev_dbg(&h
->pdev
->dev
, " Spec Number = %d\n",
3782 readl(&(tb
->SpecValence
)));
3783 dev_dbg(&h
->pdev
->dev
, " Transport methods supported = 0x%x\n",
3784 readl(&(tb
->TransportSupport
)));
3785 dev_dbg(&h
->pdev
->dev
, " Transport methods active = 0x%x\n",
3786 readl(&(tb
->TransportActive
)));
3787 dev_dbg(&h
->pdev
->dev
, " Requested transport Method = 0x%x\n",
3788 readl(&(tb
->HostWrite
.TransportRequest
)));
3789 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Delay = 0x%x\n",
3790 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3791 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Count = 0x%x\n",
3792 readl(&(tb
->HostWrite
.CoalIntCount
)));
3793 dev_dbg(&h
->pdev
->dev
, " Max outstanding commands = 0x%d\n",
3794 readl(&(tb
->CmdsOutMax
)));
3795 dev_dbg(&h
->pdev
->dev
, " Bus Types = 0x%x\n",
3796 readl(&(tb
->BusTypes
)));
3797 for (i
= 0; i
< 16; i
++)
3798 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3799 temp_name
[16] = '\0';
3800 dev_dbg(&h
->pdev
->dev
, " Server Name = %s\n", temp_name
);
3801 dev_dbg(&h
->pdev
->dev
, " Heartbeat Counter = 0x%x\n\n\n",
3802 readl(&(tb
->HeartBeat
)));
3805 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3807 int i
, offset
, mem_type
, bar_type
;
3808 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3811 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3812 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3813 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3816 mem_type
= pci_resource_flags(pdev
, i
) &
3817 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3819 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3820 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3821 offset
+= 4; /* 32 bit */
3823 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3826 default: /* reserved in PCI 2.2 */
3827 dev_warn(&pdev
->dev
,
3828 "Base address is invalid\n");
3833 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3839 /* Fill in bucket_map[], given nsgs (the max number of
3840 * scatter gather elements supported) and bucket[],
3841 * which is an array of 8 integers. The bucket[] array
3842 * contains 8 different DMA transfer sizes (in 16
3843 * byte increments) which the controller uses to fetch
3844 * commands. This function fills in bucket_map[], which
3845 * maps a given number of scatter gather elements to one of
3846 * the 8 DMA transfer sizes. The point of it is to allow the
3847 * controller to only do as much DMA as needed to fetch the
3848 * command, with the DMA transfer size encoded in the lower
3849 * bits of the command address.
3851 static void calc_bucket_map(int bucket
[], int num_buckets
,
3852 int nsgs
, int *bucket_map
)
3856 /* even a command with 0 SGs requires 4 blocks */
3857 #define MINIMUM_TRANSFER_BLOCKS 4
3858 #define NUM_BUCKETS 8
3859 /* Note, bucket_map must have nsgs+1 entries. */
3860 for (i
= 0; i
<= nsgs
; i
++) {
3861 /* Compute size of a command with i SG entries */
3862 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
3863 b
= num_buckets
; /* Assume the biggest bucket */
3864 /* Find the bucket that is just big enough */
3865 for (j
= 0; j
< 8; j
++) {
3866 if (bucket
[j
] >= size
) {
3871 /* for a command with i SG entries, use bucket b. */
3876 static void __devinit
cciss_wait_for_mode_change_ack(ctlr_info_t
*h
)
3880 /* under certain very rare conditions, this can take awhile.
3881 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3882 * as we enter this code.) */
3883 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3884 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
3886 usleep_range(10000, 20000);
3890 static __devinit
void cciss_enter_performant_mode(ctlr_info_t
*h
,
3893 /* This is a bit complicated. There are 8 registers on
3894 * the controller which we write to to tell it 8 different
3895 * sizes of commands which there may be. It's a way of
3896 * reducing the DMA done to fetch each command. Encoded into
3897 * each command's tag are 3 bits which communicate to the controller
3898 * which of the eight sizes that command fits within. The size of
3899 * each command depends on how many scatter gather entries there are.
3900 * Each SG entry requires 16 bytes. The eight registers are programmed
3901 * with the number of 16-byte blocks a command of that size requires.
3902 * The smallest command possible requires 5 such 16 byte blocks.
3903 * the largest command possible requires MAXSGENTRIES + 4 16-byte
3904 * blocks. Note, this only extends to the SG entries contained
3905 * within the command block, and does not extend to chained blocks
3906 * of SG elements. bft[] contains the eight values we write to
3907 * the registers. They are not evenly distributed, but have more
3908 * sizes for small commands, and fewer sizes for larger commands.
3911 int bft
[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES
+ 4};
3913 * 5 = 1 s/g entry or 4k
3914 * 6 = 2 s/g entry or 8k
3915 * 8 = 4 s/g entry or 16k
3916 * 10 = 6 s/g entry or 24k
3918 unsigned long register_value
;
3919 BUILD_BUG_ON(28 > MAXSGENTRIES
+ 4);
3921 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
3923 /* Controller spec: zero out this buffer. */
3924 memset(h
->reply_pool
, 0, h
->max_commands
* sizeof(__u64
));
3925 h
->reply_pool_head
= h
->reply_pool
;
3927 trans_offset
= readl(&(h
->cfgtable
->TransMethodOffset
));
3928 calc_bucket_map(bft
, ARRAY_SIZE(bft
), h
->maxsgentries
,
3929 h
->blockFetchTable
);
3930 writel(bft
[0], &h
->transtable
->BlockFetch0
);
3931 writel(bft
[1], &h
->transtable
->BlockFetch1
);
3932 writel(bft
[2], &h
->transtable
->BlockFetch2
);
3933 writel(bft
[3], &h
->transtable
->BlockFetch3
);
3934 writel(bft
[4], &h
->transtable
->BlockFetch4
);
3935 writel(bft
[5], &h
->transtable
->BlockFetch5
);
3936 writel(bft
[6], &h
->transtable
->BlockFetch6
);
3937 writel(bft
[7], &h
->transtable
->BlockFetch7
);
3939 /* size of controller ring buffer */
3940 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
3941 writel(1, &h
->transtable
->RepQCount
);
3942 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
3943 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
3944 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
3945 writel(0, &h
->transtable
->RepQAddr0High32
);
3946 writel(CFGTBL_Trans_Performant
| use_short_tags
,
3947 &(h
->cfgtable
->HostWrite
.TransportRequest
));
3949 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3950 cciss_wait_for_mode_change_ack(h
);
3951 register_value
= readl(&(h
->cfgtable
->TransportActive
));
3952 if (!(register_value
& CFGTBL_Trans_Performant
))
3953 dev_warn(&h
->pdev
->dev
, "cciss: unable to get board into"
3954 " performant mode\n");
3957 static void __devinit
cciss_put_controller_into_performant_mode(ctlr_info_t
*h
)
3959 __u32 trans_support
;
3961 dev_dbg(&h
->pdev
->dev
, "Trying to put board into Performant mode\n");
3962 /* Attempt to put controller into performant mode if supported */
3963 /* Does board support performant mode? */
3964 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
3965 if (!(trans_support
& PERFORMANT_MODE
))
3968 dev_dbg(&h
->pdev
->dev
, "Placing controller into performant mode\n");
3969 /* Performant mode demands commands on a 32 byte boundary
3970 * pci_alloc_consistent aligns on page boundarys already.
3971 * Just need to check if divisible by 32
3973 if ((sizeof(CommandList_struct
) % 32) != 0) {
3974 dev_warn(&h
->pdev
->dev
, "%s %d %s\n",
3975 "cciss info: command size[",
3976 (int)sizeof(CommandList_struct
),
3977 "] not divisible by 32, no performant mode..\n");
3981 /* Performant mode ring buffer and supporting data structures */
3982 h
->reply_pool
= (__u64
*)pci_alloc_consistent(
3983 h
->pdev
, h
->max_commands
* sizeof(__u64
),
3984 &(h
->reply_pool_dhandle
));
3986 /* Need a block fetch table for performant mode */
3987 h
->blockFetchTable
= kmalloc(((h
->maxsgentries
+1) *
3988 sizeof(__u32
)), GFP_KERNEL
);
3990 if ((h
->reply_pool
== NULL
) || (h
->blockFetchTable
== NULL
))
3993 cciss_enter_performant_mode(h
,
3994 trans_support
& CFGTBL_Trans_use_short_tags
);
3996 /* Change the access methods to the performant access methods */
3997 h
->access
= SA5_performant_access
;
3998 h
->transMethod
= CFGTBL_Trans_Performant
;
4002 kfree(h
->blockFetchTable
);
4004 pci_free_consistent(h
->pdev
,
4005 h
->max_commands
* sizeof(__u64
),
4007 h
->reply_pool_dhandle
);
4010 } /* cciss_put_controller_into_performant_mode */
4012 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
4013 * controllers that are capable. If not, we use IO-APIC mode.
4016 static void __devinit
cciss_interrupt_mode(ctlr_info_t
*h
)
4018 #ifdef CONFIG_PCI_MSI
4020 struct msix_entry cciss_msix_entries
[4] = { {0, 0}, {0, 1},
4024 /* Some boards advertise MSI but don't really support it */
4025 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
4026 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
4027 goto default_int_mode
;
4029 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSIX
)) {
4030 err
= pci_enable_msix(h
->pdev
, cciss_msix_entries
, 4);
4032 h
->intr
[0] = cciss_msix_entries
[0].vector
;
4033 h
->intr
[1] = cciss_msix_entries
[1].vector
;
4034 h
->intr
[2] = cciss_msix_entries
[2].vector
;
4035 h
->intr
[3] = cciss_msix_entries
[3].vector
;
4040 dev_warn(&h
->pdev
->dev
,
4041 "only %d MSI-X vectors available\n", err
);
4042 goto default_int_mode
;
4044 dev_warn(&h
->pdev
->dev
,
4045 "MSI-X init failed %d\n", err
);
4046 goto default_int_mode
;
4049 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSI
)) {
4050 if (!pci_enable_msi(h
->pdev
))
4053 dev_warn(&h
->pdev
->dev
, "MSI init failed\n");
4056 #endif /* CONFIG_PCI_MSI */
4057 /* if we get here we're going to use the default interrupt mode */
4058 h
->intr
[PERF_MODE_INT
] = h
->pdev
->irq
;
4062 static int __devinit
cciss_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
4065 u32 subsystem_vendor_id
, subsystem_device_id
;
4067 subsystem_vendor_id
= pdev
->subsystem_vendor
;
4068 subsystem_device_id
= pdev
->subsystem_device
;
4069 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
4070 subsystem_vendor_id
;
4072 for (i
= 0; i
< ARRAY_SIZE(products
); i
++)
4073 if (*board_id
== products
[i
].board_id
)
4075 dev_warn(&pdev
->dev
, "unrecognized board ID: 0x%08x, ignoring.\n",
4080 static inline bool cciss_board_disabled(ctlr_info_t
*h
)
4084 (void) pci_read_config_word(h
->pdev
, PCI_COMMAND
, &command
);
4085 return ((command
& PCI_COMMAND_MEMORY
) == 0);
4088 static int __devinit
cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
4089 unsigned long *memory_bar
)
4093 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
4094 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
4095 /* addressing mode bits already removed */
4096 *memory_bar
= pci_resource_start(pdev
, i
);
4097 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
4101 dev_warn(&pdev
->dev
, "no memory BAR found\n");
4105 static int __devinit
cciss_wait_for_board_state(struct pci_dev
*pdev
,
4106 void __iomem
*vaddr
, int wait_for_ready
)
4107 #define BOARD_READY 1
4108 #define BOARD_NOT_READY 0
4114 iterations
= CCISS_BOARD_READY_ITERATIONS
;
4116 iterations
= CCISS_BOARD_NOT_READY_ITERATIONS
;
4118 for (i
= 0; i
< iterations
; i
++) {
4119 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
4120 if (wait_for_ready
) {
4121 if (scratchpad
== CCISS_FIRMWARE_READY
)
4124 if (scratchpad
!= CCISS_FIRMWARE_READY
)
4127 msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS
);
4129 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
4133 static int __devinit
cciss_find_cfg_addrs(struct pci_dev
*pdev
,
4134 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
4137 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
4138 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
4139 *cfg_base_addr
&= (u32
) 0x0000ffff;
4140 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
4141 if (*cfg_base_addr_index
== -1) {
4142 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index, "
4143 "*cfg_base_addr = 0x%08x\n", *cfg_base_addr
);
4149 static int __devinit
cciss_find_cfgtables(ctlr_info_t
*h
)
4153 u64 cfg_base_addr_index
;
4157 rc
= cciss_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
4158 &cfg_base_addr_index
, &cfg_offset
);
4161 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4162 cfg_base_addr_index
) + cfg_offset
, sizeof(h
->cfgtable
));
4165 rc
= write_driver_ver_to_cfgtable(h
->cfgtable
);
4168 /* Find performant mode table. */
4169 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
4170 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4171 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
4172 sizeof(*h
->transtable
));
4178 static void __devinit
cciss_get_max_perf_mode_cmds(struct ctlr_info
*h
)
4180 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
4182 /* Limit commands in memory limited kdump scenario. */
4183 if (reset_devices
&& h
->max_commands
> 32)
4184 h
->max_commands
= 32;
4186 if (h
->max_commands
< 16) {
4187 dev_warn(&h
->pdev
->dev
, "Controller reports "
4188 "max supported commands of %d, an obvious lie. "
4189 "Using 16. Ensure that firmware is up to date.\n",
4191 h
->max_commands
= 16;
4195 /* Interrogate the hardware for some limits:
4196 * max commands, max SG elements without chaining, and with chaining,
4197 * SG chain block size, etc.
4199 static void __devinit
cciss_find_board_params(ctlr_info_t
*h
)
4201 cciss_get_max_perf_mode_cmds(h
);
4202 h
->nr_cmds
= h
->max_commands
- 4; /* Allow room for some ioctls */
4203 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxSGElements
));
4205 * Limit in-command s/g elements to 32 save dma'able memory.
4206 * Howvever spec says if 0, use 31
4208 h
->max_cmd_sgentries
= 31;
4209 if (h
->maxsgentries
> 512) {
4210 h
->max_cmd_sgentries
= 32;
4211 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sgentries
+ 1;
4212 h
->maxsgentries
--; /* save one for chain pointer */
4214 h
->maxsgentries
= 31; /* default to traditional values */
4219 static inline bool CISS_signature_present(ctlr_info_t
*h
)
4221 if ((readb(&h
->cfgtable
->Signature
[0]) != 'C') ||
4222 (readb(&h
->cfgtable
->Signature
[1]) != 'I') ||
4223 (readb(&h
->cfgtable
->Signature
[2]) != 'S') ||
4224 (readb(&h
->cfgtable
->Signature
[3]) != 'S')) {
4225 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
4231 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
4232 static inline void cciss_enable_scsi_prefetch(ctlr_info_t
*h
)
4237 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
4239 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
4243 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
4244 * in a prefetch beyond physical memory.
4246 static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t
*h
)
4251 if (h
->board_id
!= 0x3225103C)
4253 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
4254 dma_prefetch
|= 0x8000;
4255 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
4256 pci_read_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, &dma_refetch
);
4258 pci_write_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, dma_refetch
);
4261 static int __devinit
cciss_pci_init(ctlr_info_t
*h
)
4263 int prod_index
, err
;
4265 prod_index
= cciss_lookup_board_id(h
->pdev
, &h
->board_id
);
4268 h
->product_name
= products
[prod_index
].product_name
;
4269 h
->access
= *(products
[prod_index
].access
);
4271 if (cciss_board_disabled(h
)) {
4272 dev_warn(&h
->pdev
->dev
, "controller appears to be disabled\n");
4275 err
= pci_enable_device(h
->pdev
);
4277 dev_warn(&h
->pdev
->dev
, "Unable to Enable PCI device\n");
4281 err
= pci_request_regions(h
->pdev
, "cciss");
4283 dev_warn(&h
->pdev
->dev
,
4284 "Cannot obtain PCI resources, aborting\n");
4288 dev_dbg(&h
->pdev
->dev
, "irq = %x\n", h
->pdev
->irq
);
4289 dev_dbg(&h
->pdev
->dev
, "board_id = %x\n", h
->board_id
);
4291 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
4292 * else we use the IO-APIC interrupt assigned to us by system ROM.
4294 cciss_interrupt_mode(h
);
4295 err
= cciss_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
4297 goto err_out_free_res
;
4298 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
4301 goto err_out_free_res
;
4303 err
= cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
4305 goto err_out_free_res
;
4306 err
= cciss_find_cfgtables(h
);
4308 goto err_out_free_res
;
4310 cciss_find_board_params(h
);
4312 if (!CISS_signature_present(h
)) {
4314 goto err_out_free_res
;
4316 cciss_enable_scsi_prefetch(h
);
4317 cciss_p600_dma_prefetch_quirk(h
);
4318 cciss_put_controller_into_performant_mode(h
);
4323 * Deliberately omit pci_disable_device(): it does something nasty to
4324 * Smart Array controllers that pci_enable_device does not undo
4327 iounmap(h
->transtable
);
4329 iounmap(h
->cfgtable
);
4332 pci_release_regions(h
->pdev
);
4336 /* Function to find the first free pointer into our hba[] array
4337 * Returns -1 if no free entries are left.
4339 static int alloc_cciss_hba(struct pci_dev
*pdev
)
4343 for (i
= 0; i
< MAX_CTLR
; i
++) {
4347 h
= kzalloc(sizeof(ctlr_info_t
), GFP_KERNEL
);
4354 dev_warn(&pdev
->dev
, "This driver supports a maximum"
4355 " of %d controllers.\n", MAX_CTLR
);
4358 dev_warn(&pdev
->dev
, "out of memory.\n");
4362 static void free_hba(ctlr_info_t
*h
)
4366 hba
[h
->ctlr
] = NULL
;
4367 for (i
= 0; i
< h
->highest_lun
+ 1; i
++)
4368 if (h
->gendisk
[i
] != NULL
)
4369 put_disk(h
->gendisk
[i
]);
4373 /* Send a message CDB to the firmware. */
4374 static __devinit
int cciss_message(struct pci_dev
*pdev
, unsigned char opcode
, unsigned char type
)
4377 CommandListHeader_struct CommandHeader
;
4378 RequestBlock_struct Request
;
4379 ErrDescriptor_struct ErrorDescriptor
;
4381 static const size_t cmd_sz
= sizeof(Command
) + sizeof(ErrorInfo_struct
);
4384 uint32_t paddr32
, tag
;
4385 void __iomem
*vaddr
;
4388 vaddr
= ioremap_nocache(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
4392 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
4393 CCISS commands, so they must be allocated from the lower 4GiB of
4395 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4401 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
4407 /* This must fit, because of the 32-bit consistent DMA mask. Also,
4408 although there's no guarantee, we assume that the address is at
4409 least 4-byte aligned (most likely, it's page-aligned). */
4412 cmd
->CommandHeader
.ReplyQueue
= 0;
4413 cmd
->CommandHeader
.SGList
= 0;
4414 cmd
->CommandHeader
.SGTotal
= 0;
4415 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
4416 cmd
->CommandHeader
.Tag
.upper
= 0;
4417 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
4419 cmd
->Request
.CDBLen
= 16;
4420 cmd
->Request
.Type
.Type
= TYPE_MSG
;
4421 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
4422 cmd
->Request
.Type
.Direction
= XFER_NONE
;
4423 cmd
->Request
.Timeout
= 0; /* Don't time out */
4424 cmd
->Request
.CDB
[0] = opcode
;
4425 cmd
->Request
.CDB
[1] = type
;
4426 memset(&cmd
->Request
.CDB
[2], 0, 14); /* the rest of the CDB is reserved */
4428 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(Command
);
4429 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
4430 cmd
->ErrorDescriptor
.Len
= sizeof(ErrorInfo_struct
);
4432 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
4434 for (i
= 0; i
< 10; i
++) {
4435 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
4436 if ((tag
& ~3) == paddr32
)
4438 msleep(CCISS_POST_RESET_NOOP_TIMEOUT_MSECS
);
4443 /* we leak the DMA buffer here ... no choice since the controller could
4444 still complete the command. */
4447 "controller message %02x:%02x timed out\n",
4452 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
4455 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
4460 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
4465 #define cciss_noop(p) cciss_message(p, 3, 0)
4467 static int cciss_controller_hard_reset(struct pci_dev
*pdev
,
4468 void * __iomem vaddr
, u32 use_doorbell
)
4474 /* For everything after the P600, the PCI power state method
4475 * of resetting the controller doesn't work, so we have this
4476 * other way using the doorbell register.
4478 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
4479 writel(use_doorbell
, vaddr
+ SA5_DOORBELL
);
4480 } else { /* Try to do it the PCI power state way */
4482 /* Quoting from the Open CISS Specification: "The Power
4483 * Management Control/Status Register (CSR) controls the power
4484 * state of the device. The normal operating state is D0,
4485 * CSR=00h. The software off state is D3, CSR=03h. To reset
4486 * the controller, place the interface device in D3 then to D0,
4487 * this causes a secondary PCI reset which will reset the
4490 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
4493 "cciss_controller_hard_reset: "
4494 "PCI PM not supported\n");
4497 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
4498 /* enter the D3hot power management state */
4499 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
4500 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4502 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4506 /* enter the D0 power management state */
4507 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4509 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4514 static __devinit
void init_driver_version(char *driver_version
, int len
)
4516 memset(driver_version
, 0, len
);
4517 strncpy(driver_version
, "cciss " DRIVER_NAME
, len
- 1);
4520 static __devinit
int write_driver_ver_to_cfgtable(
4521 CfgTable_struct __iomem
*cfgtable
)
4523 char *driver_version
;
4524 int i
, size
= sizeof(cfgtable
->driver_version
);
4526 driver_version
= kmalloc(size
, GFP_KERNEL
);
4527 if (!driver_version
)
4530 init_driver_version(driver_version
, size
);
4531 for (i
= 0; i
< size
; i
++)
4532 writeb(driver_version
[i
], &cfgtable
->driver_version
[i
]);
4533 kfree(driver_version
);
4537 static __devinit
void read_driver_ver_from_cfgtable(
4538 CfgTable_struct __iomem
*cfgtable
, unsigned char *driver_ver
)
4542 for (i
= 0; i
< sizeof(cfgtable
->driver_version
); i
++)
4543 driver_ver
[i
] = readb(&cfgtable
->driver_version
[i
]);
4546 static __devinit
int controller_reset_failed(
4547 CfgTable_struct __iomem
*cfgtable
)
4550 char *driver_ver
, *old_driver_ver
;
4551 int rc
, size
= sizeof(cfgtable
->driver_version
);
4553 old_driver_ver
= kmalloc(2 * size
, GFP_KERNEL
);
4554 if (!old_driver_ver
)
4556 driver_ver
= old_driver_ver
+ size
;
4558 /* After a reset, the 32 bytes of "driver version" in the cfgtable
4559 * should have been changed, otherwise we know the reset failed.
4561 init_driver_version(old_driver_ver
, size
);
4562 read_driver_ver_from_cfgtable(cfgtable
, driver_ver
);
4563 rc
= !memcmp(driver_ver
, old_driver_ver
, size
);
4564 kfree(old_driver_ver
);
4568 /* This does a hard reset of the controller using PCI power management
4569 * states or using the doorbell register. */
4570 static __devinit
int cciss_kdump_hard_reset_controller(struct pci_dev
*pdev
)
4574 u64 cfg_base_addr_index
;
4575 void __iomem
*vaddr
;
4576 unsigned long paddr
;
4577 u32 misc_fw_support
;
4579 CfgTable_struct __iomem
*cfgtable
;
4582 u16 command_register
;
4584 /* For controllers as old a the p600, this is very nearly
4587 * pci_save_state(pci_dev);
4588 * pci_set_power_state(pci_dev, PCI_D3hot);
4589 * pci_set_power_state(pci_dev, PCI_D0);
4590 * pci_restore_state(pci_dev);
4592 * For controllers newer than the P600, the pci power state
4593 * method of resetting doesn't work so we have another way
4594 * using the doorbell register.
4597 /* Exclude 640x boards. These are two pci devices in one slot
4598 * which share a battery backed cache module. One controls the
4599 * cache, the other accesses the cache through the one that controls
4600 * it. If we reset the one controlling the cache, the other will
4601 * likely not be happy. Just forbid resetting this conjoined mess.
4603 cciss_lookup_board_id(pdev
, &board_id
);
4604 if (board_id
== 0x409C0E11 || board_id
== 0x409D0E11) {
4605 dev_warn(&pdev
->dev
, "Cannot reset Smart Array 640x "
4606 "due to shared cache module.");
4610 /* Save the PCI command register */
4611 pci_read_config_word(pdev
, 4, &command_register
);
4612 /* Turn the board off. This is so that later pci_restore_state()
4613 * won't turn the board on before the rest of config space is ready.
4615 pci_disable_device(pdev
);
4616 pci_save_state(pdev
);
4618 /* find the first memory BAR, so we can find the cfg table */
4619 rc
= cciss_pci_find_memory_BAR(pdev
, &paddr
);
4622 vaddr
= remap_pci_mem(paddr
, 0x250);
4626 /* find cfgtable in order to check if reset via doorbell is supported */
4627 rc
= cciss_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
4628 &cfg_base_addr_index
, &cfg_offset
);
4631 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
4632 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
4637 rc
= write_driver_ver_to_cfgtable(cfgtable
);
4641 /* If reset via doorbell register is supported, use that.
4642 * There are two such methods. Favor the newest method.
4644 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
4645 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET2
;
4647 use_doorbell
= DOORBELL_CTLR_RESET2
;
4649 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
4651 use_doorbell
= DOORBELL_CTLR_RESET
;
4654 rc
= cciss_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
4656 goto unmap_cfgtable
;
4657 pci_restore_state(pdev
);
4658 rc
= pci_enable_device(pdev
);
4660 dev_warn(&pdev
->dev
, "failed to enable device.\n");
4661 goto unmap_cfgtable
;
4663 pci_write_config_word(pdev
, 4, command_register
);
4665 /* Some devices (notably the HP Smart Array 5i Controller)
4666 need a little pause here */
4667 msleep(CCISS_POST_RESET_PAUSE_MSECS
);
4669 /* Wait for board to become not ready, then ready. */
4670 dev_info(&pdev
->dev
, "Waiting for board to reset.\n");
4671 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
4673 dev_warn(&pdev
->dev
, "Failed waiting for board to hard reset."
4674 " Will try soft reset.\n");
4675 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4676 goto unmap_cfgtable
;
4678 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
4680 dev_warn(&pdev
->dev
,
4681 "failed waiting for board to become ready "
4682 "after hard reset\n");
4683 goto unmap_cfgtable
;
4686 rc
= controller_reset_failed(vaddr
);
4688 goto unmap_cfgtable
;
4690 dev_warn(&pdev
->dev
, "Unable to successfully hard reset "
4691 "controller. Will try soft reset.\n");
4692 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4694 dev_info(&pdev
->dev
, "Board ready after hard reset.\n");
4705 static __devinit
int cciss_init_reset_devices(struct pci_dev
*pdev
)
4712 /* Reset the controller with a PCI power-cycle or via doorbell */
4713 rc
= cciss_kdump_hard_reset_controller(pdev
);
4715 /* -ENOTSUPP here means we cannot reset the controller
4716 * but it's already (and still) up and running in
4717 * "performant mode". Or, it might be 640x, which can't reset
4718 * due to concerns about shared bbwc between 6402/6404 pair.
4720 if (rc
== -ENOTSUPP
)
4721 return rc
; /* just try to do the kdump anyhow. */
4725 /* Now try to get the controller to respond to a no-op */
4726 dev_warn(&pdev
->dev
, "Waiting for controller to respond to no-op\n");
4727 for (i
= 0; i
< CCISS_POST_RESET_NOOP_RETRIES
; i
++) {
4728 if (cciss_noop(pdev
) == 0)
4731 dev_warn(&pdev
->dev
, "no-op failed%s\n",
4732 (i
< CCISS_POST_RESET_NOOP_RETRIES
- 1 ?
4733 "; re-trying" : ""));
4734 msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS
);
4739 static __devinit
int cciss_allocate_cmd_pool(ctlr_info_t
*h
)
4741 h
->cmd_pool_bits
= kmalloc(
4742 DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
) *
4743 sizeof(unsigned long), GFP_KERNEL
);
4744 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
4745 h
->nr_cmds
* sizeof(CommandList_struct
),
4746 &(h
->cmd_pool_dhandle
));
4747 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
4748 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4749 &(h
->errinfo_pool_dhandle
));
4750 if ((h
->cmd_pool_bits
== NULL
)
4751 || (h
->cmd_pool
== NULL
)
4752 || (h
->errinfo_pool
== NULL
)) {
4753 dev_err(&h
->pdev
->dev
, "out of memory");
4759 static __devinit
int cciss_allocate_scatterlists(ctlr_info_t
*h
)
4763 /* zero it, so that on free we need not know how many were alloc'ed */
4764 h
->scatter_list
= kzalloc(h
->max_commands
*
4765 sizeof(struct scatterlist
*), GFP_KERNEL
);
4766 if (!h
->scatter_list
)
4769 for (i
= 0; i
< h
->nr_cmds
; i
++) {
4770 h
->scatter_list
[i
] = kmalloc(sizeof(struct scatterlist
) *
4771 h
->maxsgentries
, GFP_KERNEL
);
4772 if (h
->scatter_list
[i
] == NULL
) {
4773 dev_err(&h
->pdev
->dev
, "could not allocate "
4781 static void cciss_free_scatterlists(ctlr_info_t
*h
)
4785 if (h
->scatter_list
) {
4786 for (i
= 0; i
< h
->nr_cmds
; i
++)
4787 kfree(h
->scatter_list
[i
]);
4788 kfree(h
->scatter_list
);
4792 static void cciss_free_cmd_pool(ctlr_info_t
*h
)
4794 kfree(h
->cmd_pool_bits
);
4796 pci_free_consistent(h
->pdev
,
4797 h
->nr_cmds
* sizeof(CommandList_struct
),
4798 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4799 if (h
->errinfo_pool
)
4800 pci_free_consistent(h
->pdev
,
4801 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4802 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4805 static int cciss_request_irq(ctlr_info_t
*h
,
4806 irqreturn_t (*msixhandler
)(int, void *),
4807 irqreturn_t (*intxhandler
)(int, void *))
4809 if (h
->msix_vector
|| h
->msi_vector
) {
4810 if (!request_irq(h
->intr
[PERF_MODE_INT
], msixhandler
,
4811 IRQF_DISABLED
, h
->devname
, h
))
4813 dev_err(&h
->pdev
->dev
, "Unable to get msi irq %d"
4814 " for %s\n", h
->intr
[PERF_MODE_INT
],
4819 if (!request_irq(h
->intr
[PERF_MODE_INT
], intxhandler
,
4820 IRQF_DISABLED
, h
->devname
, h
))
4822 dev_err(&h
->pdev
->dev
, "Unable to get irq %d for %s\n",
4823 h
->intr
[PERF_MODE_INT
], h
->devname
);
4827 static int __devinit
cciss_kdump_soft_reset(ctlr_info_t
*h
)
4829 if (cciss_send_reset(h
, CTLR_LUNID
, CCISS_RESET_TYPE_CONTROLLER
)) {
4830 dev_warn(&h
->pdev
->dev
, "Resetting array controller failed.\n");
4834 dev_info(&h
->pdev
->dev
, "Waiting for board to soft reset.\n");
4835 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_NOT_READY
)) {
4836 dev_warn(&h
->pdev
->dev
, "Soft reset had no effect.\n");
4840 dev_info(&h
->pdev
->dev
, "Board reset, awaiting READY status.\n");
4841 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
)) {
4842 dev_warn(&h
->pdev
->dev
, "Board failed to become ready "
4843 "after soft reset.\n");
4850 static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t
*h
)
4854 free_irq(h
->intr
[PERF_MODE_INT
], h
);
4855 #ifdef CONFIG_PCI_MSI
4857 pci_disable_msix(h
->pdev
);
4858 else if (h
->msi_vector
)
4859 pci_disable_msi(h
->pdev
);
4860 #endif /* CONFIG_PCI_MSI */
4861 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
4862 cciss_free_scatterlists(h
);
4863 cciss_free_cmd_pool(h
);
4864 kfree(h
->blockFetchTable
);
4866 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
4867 h
->reply_pool
, h
->reply_pool_dhandle
);
4869 iounmap(h
->transtable
);
4871 iounmap(h
->cfgtable
);
4874 unregister_blkdev(h
->major
, h
->devname
);
4875 cciss_destroy_hba_sysfs_entry(h
);
4876 pci_release_regions(h
->pdev
);
4882 * This is it. Find all the controllers and register them. I really hate
4883 * stealing all these major device numbers.
4884 * returns the number of block devices registered.
4886 static int __devinit
cciss_init_one(struct pci_dev
*pdev
,
4887 const struct pci_device_id
*ent
)
4892 int try_soft_reset
= 0;
4893 int dac
, return_code
;
4894 InquiryData_struct
*inq_buff
;
4896 unsigned long flags
;
4898 rc
= cciss_init_reset_devices(pdev
);
4900 if (rc
!= -ENOTSUPP
)
4902 /* If the reset fails in a particular way (it has no way to do
4903 * a proper hard reset, so returns -ENOTSUPP) we can try to do
4904 * a soft reset once we get the controller configured up to the
4905 * point that it can accept a command.
4911 reinit_after_soft_reset
:
4913 i
= alloc_cciss_hba(pdev
);
4919 h
->busy_initializing
= 1;
4920 INIT_LIST_HEAD(&h
->cmpQ
);
4921 INIT_LIST_HEAD(&h
->reqQ
);
4922 mutex_init(&h
->busy_shutting_down
);
4924 if (cciss_pci_init(h
) != 0)
4925 goto clean_no_release_regions
;
4927 sprintf(h
->devname
, "cciss%d", i
);
4930 init_completion(&h
->scan_wait
);
4932 if (cciss_create_hba_sysfs_entry(h
))
4935 /* configure PCI DMA stuff */
4936 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)))
4938 else if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)))
4941 dev_err(&h
->pdev
->dev
, "no suitable DMA available\n");
4946 * register with the major number, or get a dynamic major number
4947 * by passing 0 as argument. This is done for greater than
4948 * 8 controller support.
4950 if (i
< MAX_CTLR_ORIG
)
4951 h
->major
= COMPAQ_CISS_MAJOR
+ i
;
4952 rc
= register_blkdev(h
->major
, h
->devname
);
4953 if (rc
== -EBUSY
|| rc
== -EINVAL
) {
4954 dev_err(&h
->pdev
->dev
,
4955 "Unable to get major number %d for %s "
4956 "on hba %d\n", h
->major
, h
->devname
, i
);
4959 if (i
>= MAX_CTLR_ORIG
)
4963 /* make sure the board interrupts are off */
4964 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
4965 rc
= cciss_request_irq(h
, do_cciss_msix_intr
, do_cciss_intx
);
4969 dev_info(&h
->pdev
->dev
, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
4970 h
->devname
, pdev
->device
, pci_name(pdev
),
4971 h
->intr
[PERF_MODE_INT
], dac
? "" : " not");
4973 if (cciss_allocate_cmd_pool(h
))
4976 if (cciss_allocate_scatterlists(h
))
4979 h
->cmd_sg_list
= cciss_allocate_sg_chain_blocks(h
,
4980 h
->chainsize
, h
->nr_cmds
);
4981 if (!h
->cmd_sg_list
&& h
->chainsize
> 0)
4984 spin_lock_init(&h
->lock
);
4986 /* Initialize the pdev driver private data.
4987 have it point to h. */
4988 pci_set_drvdata(pdev
, h
);
4989 /* command and error info recs zeroed out before
4991 memset(h
->cmd_pool_bits
, 0,
4992 DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
)
4993 * sizeof(unsigned long));
4996 h
->highest_lun
= -1;
4997 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
4999 h
->gendisk
[j
] = NULL
;
5002 /* At this point, the controller is ready to take commands.
5003 * Now, if reset_devices and the hard reset didn't work, try
5004 * the soft reset and see if that works.
5006 if (try_soft_reset
) {
5008 /* This is kind of gross. We may or may not get a completion
5009 * from the soft reset command, and if we do, then the value
5010 * from the fifo may or may not be valid. So, we wait 10 secs
5011 * after the reset throwing away any completions we get during
5012 * that time. Unregister the interrupt handler and register
5013 * fake ones to scoop up any residual completions.
5015 spin_lock_irqsave(&h
->lock
, flags
);
5016 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5017 spin_unlock_irqrestore(&h
->lock
, flags
);
5018 free_irq(h
->intr
[PERF_MODE_INT
], h
);
5019 rc
= cciss_request_irq(h
, cciss_msix_discard_completions
,
5020 cciss_intx_discard_completions
);
5022 dev_warn(&h
->pdev
->dev
, "Failed to request_irq after "
5027 rc
= cciss_kdump_soft_reset(h
);
5029 dev_warn(&h
->pdev
->dev
, "Soft reset failed.\n");
5033 dev_info(&h
->pdev
->dev
, "Board READY.\n");
5034 dev_info(&h
->pdev
->dev
,
5035 "Waiting for stale completions to drain.\n");
5036 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5038 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5040 rc
= controller_reset_failed(h
->cfgtable
);
5042 dev_info(&h
->pdev
->dev
,
5043 "Soft reset appears to have failed.\n");
5045 /* since the controller's reset, we have to go back and re-init
5046 * everything. Easiest to just forget what we've done and do it
5049 cciss_undo_allocations_after_kdump_soft_reset(h
);
5052 /* don't go to clean4, we already unallocated */
5055 goto reinit_after_soft_reset
;
5058 cciss_scsi_setup(h
);
5060 /* Turn the interrupts on so we can service requests */
5061 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5063 /* Get the firmware version */
5064 inq_buff
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
5065 if (inq_buff
== NULL
) {
5066 dev_err(&h
->pdev
->dev
, "out of memory\n");
5070 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
5071 sizeof(InquiryData_struct
), 0, CTLR_LUNID
, TYPE_CMD
);
5072 if (return_code
== IO_OK
) {
5073 h
->firm_ver
[0] = inq_buff
->data_byte
[32];
5074 h
->firm_ver
[1] = inq_buff
->data_byte
[33];
5075 h
->firm_ver
[2] = inq_buff
->data_byte
[34];
5076 h
->firm_ver
[3] = inq_buff
->data_byte
[35];
5077 } else { /* send command failed */
5078 dev_warn(&h
->pdev
->dev
, "unable to determine firmware"
5079 " version of controller\n");
5085 h
->cciss_max_sectors
= 8192;
5087 rebuild_lun_table(h
, 1, 0);
5088 h
->busy_initializing
= 0;
5092 cciss_free_cmd_pool(h
);
5093 cciss_free_scatterlists(h
);
5094 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5095 free_irq(h
->intr
[PERF_MODE_INT
], h
);
5097 unregister_blkdev(h
->major
, h
->devname
);
5099 cciss_destroy_hba_sysfs_entry(h
);
5101 pci_release_regions(pdev
);
5102 clean_no_release_regions
:
5103 h
->busy_initializing
= 0;
5106 * Deliberately omit pci_disable_device(): it does something nasty to
5107 * Smart Array controllers that pci_enable_device does not undo
5109 pci_set_drvdata(pdev
, NULL
);
5114 static void cciss_shutdown(struct pci_dev
*pdev
)
5120 h
= pci_get_drvdata(pdev
);
5121 flush_buf
= kzalloc(4, GFP_KERNEL
);
5123 dev_warn(&h
->pdev
->dev
, "cache not flushed, out of memory.\n");
5126 /* write all data in the battery backed cache to disk */
5127 memset(flush_buf
, 0, 4);
5128 return_code
= sendcmd_withirq(h
, CCISS_CACHE_FLUSH
, flush_buf
,
5129 4, 0, CTLR_LUNID
, TYPE_CMD
);
5131 if (return_code
!= IO_OK
)
5132 dev_warn(&h
->pdev
->dev
, "Error flushing cache\n");
5133 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5134 free_irq(h
->intr
[PERF_MODE_INT
], h
);
5137 static void __devexit
cciss_remove_one(struct pci_dev
*pdev
)
5142 if (pci_get_drvdata(pdev
) == NULL
) {
5143 dev_err(&pdev
->dev
, "Unable to remove device\n");
5147 h
= pci_get_drvdata(pdev
);
5149 if (hba
[i
] == NULL
) {
5150 dev_err(&pdev
->dev
, "device appears to already be removed\n");
5154 mutex_lock(&h
->busy_shutting_down
);
5156 remove_from_scan_list(h
);
5157 remove_proc_entry(h
->devname
, proc_cciss
);
5158 unregister_blkdev(h
->major
, h
->devname
);
5160 /* remove it from the disk list */
5161 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
5162 struct gendisk
*disk
= h
->gendisk
[j
];
5164 struct request_queue
*q
= disk
->queue
;
5166 if (disk
->flags
& GENHD_FL_UP
) {
5167 cciss_destroy_ld_sysfs_entry(h
, j
, 1);
5171 blk_cleanup_queue(q
);
5175 #ifdef CONFIG_CISS_SCSI_TAPE
5176 cciss_unregister_scsi(h
); /* unhook from SCSI subsystem */
5179 cciss_shutdown(pdev
);
5181 #ifdef CONFIG_PCI_MSI
5183 pci_disable_msix(h
->pdev
);
5184 else if (h
->msi_vector
)
5185 pci_disable_msi(h
->pdev
);
5186 #endif /* CONFIG_PCI_MSI */
5188 iounmap(h
->transtable
);
5189 iounmap(h
->cfgtable
);
5192 cciss_free_cmd_pool(h
);
5193 /* Free up sg elements */
5194 for (j
= 0; j
< h
->nr_cmds
; j
++)
5195 kfree(h
->scatter_list
[j
]);
5196 kfree(h
->scatter_list
);
5197 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5198 kfree(h
->blockFetchTable
);
5200 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
5201 h
->reply_pool
, h
->reply_pool_dhandle
);
5203 * Deliberately omit pci_disable_device(): it does something nasty to
5204 * Smart Array controllers that pci_enable_device does not undo
5206 pci_release_regions(pdev
);
5207 pci_set_drvdata(pdev
, NULL
);
5208 cciss_destroy_hba_sysfs_entry(h
);
5209 mutex_unlock(&h
->busy_shutting_down
);
5213 static struct pci_driver cciss_pci_driver
= {
5215 .probe
= cciss_init_one
,
5216 .remove
= __devexit_p(cciss_remove_one
),
5217 .id_table
= cciss_pci_device_id
, /* id_table */
5218 .shutdown
= cciss_shutdown
,
5222 * This is it. Register the PCI driver information for the cards we control
5223 * the OS will call our registered routines when it finds one of our cards.
5225 static int __init
cciss_init(void)
5230 * The hardware requires that commands are aligned on a 64-bit
5231 * boundary. Given that we use pci_alloc_consistent() to allocate an
5232 * array of them, the size must be a multiple of 8 bytes.
5234 BUILD_BUG_ON(sizeof(CommandList_struct
) % COMMANDLIST_ALIGNMENT
);
5235 printk(KERN_INFO DRIVER_NAME
"\n");
5237 err
= bus_register(&cciss_bus_type
);
5241 /* Start the scan thread */
5242 cciss_scan_thread
= kthread_run(scan_thread
, NULL
, "cciss_scan");
5243 if (IS_ERR(cciss_scan_thread
)) {
5244 err
= PTR_ERR(cciss_scan_thread
);
5245 goto err_bus_unregister
;
5248 /* Register for our PCI devices */
5249 err
= pci_register_driver(&cciss_pci_driver
);
5251 goto err_thread_stop
;
5256 kthread_stop(cciss_scan_thread
);
5258 bus_unregister(&cciss_bus_type
);
5263 static void __exit
cciss_cleanup(void)
5267 pci_unregister_driver(&cciss_pci_driver
);
5268 /* double check that all controller entrys have been removed */
5269 for (i
= 0; i
< MAX_CTLR
; i
++) {
5270 if (hba
[i
] != NULL
) {
5271 dev_warn(&hba
[i
]->pdev
->dev
,
5272 "had to remove controller\n");
5273 cciss_remove_one(hba
[i
]->pdev
);
5276 kthread_stop(cciss_scan_thread
);
5278 remove_proc_entry("driver/cciss", NULL
);
5279 bus_unregister(&cciss_bus_type
);
5282 module_init(cciss_init
);
5283 module_exit(cciss_cleanup
);