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/smp_lock.h>
30 #include <linux/delay.h>
31 #include <linux/major.h>
33 #include <linux/bio.h>
34 #include <linux/blkpg.h>
35 #include <linux/timer.h>
36 #include <linux/proc_fs.h>
37 #include <linux/seq_file.h>
38 #include <linux/init.h>
39 #include <linux/jiffies.h>
40 #include <linux/hdreg.h>
41 #include <linux/spinlock.h>
42 #include <linux/compat.h>
43 #include <linux/mutex.h>
44 #include <asm/uaccess.h>
47 #include <linux/dma-mapping.h>
48 #include <linux/blkdev.h>
49 #include <linux/genhd.h>
50 #include <linux/completion.h>
51 #include <scsi/scsi.h>
53 #include <scsi/scsi_ioctl.h>
54 #include <linux/cdrom.h>
55 #include <linux/scatterlist.h>
56 #include <linux/kthread.h>
58 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
59 #define DRIVER_NAME "HP CISS Driver (v 3.6.26)"
60 #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26)
62 /* Embedded module documentation macros - see modules.h */
63 MODULE_AUTHOR("Hewlett-Packard Company");
64 MODULE_DESCRIPTION("Driver for HP Smart Array Controllers");
65 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
66 MODULE_VERSION("3.6.26");
67 MODULE_LICENSE("GPL");
69 static int cciss_allow_hpsa
;
70 module_param(cciss_allow_hpsa
, int, S_IRUGO
|S_IWUSR
);
71 MODULE_PARM_DESC(cciss_allow_hpsa
,
72 "Prevent cciss driver from accessing hardware known to be "
73 " supported by the hpsa driver");
75 #include "cciss_cmd.h"
77 #include <linux/cciss_ioctl.h>
79 /* define the PCI info for the cards we can control */
80 static const struct pci_device_id cciss_pci_device_id
[] = {
81 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISS
, 0x0E11, 0x4070},
82 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4080},
83 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4082},
84 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4083},
85 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x4091},
86 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409A},
87 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409B},
88 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409C},
89 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409D},
90 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSA
, 0x103C, 0x3225},
91 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3223},
92 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3234},
93 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3235},
94 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3211},
95 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3212},
96 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3213},
97 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3214},
98 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3215},
99 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3237},
100 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x323D},
101 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3241},
102 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3243},
103 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3245},
104 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3247},
105 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3249},
106 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324A},
107 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x324B},
108 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3250},
109 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3251},
110 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3252},
111 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3253},
112 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSE
, 0x103C, 0x3254},
116 MODULE_DEVICE_TABLE(pci
, cciss_pci_device_id
);
118 /* board_id = Subsystem Device ID & Vendor ID
119 * product = Marketing Name for the board
120 * access = Address of the struct of function pointers
122 static struct board_type products
[] = {
123 {0x40700E11, "Smart Array 5300", &SA5_access
},
124 {0x40800E11, "Smart Array 5i", &SA5B_access
},
125 {0x40820E11, "Smart Array 532", &SA5B_access
},
126 {0x40830E11, "Smart Array 5312", &SA5B_access
},
127 {0x409A0E11, "Smart Array 641", &SA5_access
},
128 {0x409B0E11, "Smart Array 642", &SA5_access
},
129 {0x409C0E11, "Smart Array 6400", &SA5_access
},
130 {0x409D0E11, "Smart Array 6400 EM", &SA5_access
},
131 {0x40910E11, "Smart Array 6i", &SA5_access
},
132 {0x3225103C, "Smart Array P600", &SA5_access
},
133 {0x3235103C, "Smart Array P400i", &SA5_access
},
134 {0x3211103C, "Smart Array E200i", &SA5_access
},
135 {0x3212103C, "Smart Array E200", &SA5_access
},
136 {0x3213103C, "Smart Array E200i", &SA5_access
},
137 {0x3214103C, "Smart Array E200i", &SA5_access
},
138 {0x3215103C, "Smart Array E200i", &SA5_access
},
139 {0x3237103C, "Smart Array E500", &SA5_access
},
140 /* controllers below this line are also supported by the hpsa driver. */
141 #define HPSA_BOUNDARY 0x3223103C
142 {0x3223103C, "Smart Array P800", &SA5_access
},
143 {0x3234103C, "Smart Array P400", &SA5_access
},
144 {0x323D103C, "Smart Array P700m", &SA5_access
},
145 {0x3241103C, "Smart Array P212", &SA5_access
},
146 {0x3243103C, "Smart Array P410", &SA5_access
},
147 {0x3245103C, "Smart Array P410i", &SA5_access
},
148 {0x3247103C, "Smart Array P411", &SA5_access
},
149 {0x3249103C, "Smart Array P812", &SA5_access
},
150 {0x324A103C, "Smart Array P712m", &SA5_access
},
151 {0x324B103C, "Smart Array P711m", &SA5_access
},
152 {0x3250103C, "Smart Array", &SA5_access
},
153 {0x3251103C, "Smart Array", &SA5_access
},
154 {0x3252103C, "Smart Array", &SA5_access
},
155 {0x3253103C, "Smart Array", &SA5_access
},
156 {0x3254103C, "Smart Array", &SA5_access
},
159 /* How long to wait (in milliseconds) for board to go into simple mode */
160 #define MAX_CONFIG_WAIT 30000
161 #define MAX_IOCTL_CONFIG_WAIT 1000
163 /*define how many times we will try a command because of bus resets */
164 #define MAX_CMD_RETRIES 3
168 /* Originally cciss driver only supports 8 major numbers */
169 #define MAX_CTLR_ORIG 8
171 static ctlr_info_t
*hba
[MAX_CTLR
];
173 static struct task_struct
*cciss_scan_thread
;
174 static DEFINE_MUTEX(scan_mutex
);
175 static LIST_HEAD(scan_q
);
177 static void do_cciss_request(struct request_queue
*q
);
178 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
);
179 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
);
180 static int cciss_open(struct block_device
*bdev
, fmode_t mode
);
181 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
);
182 static int cciss_release(struct gendisk
*disk
, fmode_t mode
);
183 static int do_ioctl(struct block_device
*bdev
, fmode_t mode
,
184 unsigned int cmd
, unsigned long arg
);
185 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
186 unsigned int cmd
, unsigned long arg
);
187 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
);
189 static int cciss_revalidate(struct gendisk
*disk
);
190 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
, int via_ioctl
);
191 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
192 int clear_all
, int via_ioctl
);
194 static void cciss_read_capacity(ctlr_info_t
*h
, int logvol
,
195 sector_t
*total_size
, unsigned int *block_size
);
196 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
197 sector_t
*total_size
, unsigned int *block_size
);
198 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
200 unsigned int block_size
, InquiryData_struct
*inq_buff
,
201 drive_info_struct
*drv
);
202 static void __devinit
cciss_interrupt_mode(ctlr_info_t
*);
203 static void start_io(ctlr_info_t
*h
);
204 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
205 __u8 page_code
, unsigned char scsi3addr
[],
207 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
209 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
);
211 static int add_to_scan_list(struct ctlr_info
*h
);
212 static int scan_thread(void *data
);
213 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
);
214 static void cciss_hba_release(struct device
*dev
);
215 static void cciss_device_release(struct device
*dev
);
216 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
);
217 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
);
218 static inline u32
next_command(ctlr_info_t
*h
);
219 static int __devinit
cciss_find_cfg_addrs(struct pci_dev
*pdev
,
220 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
222 static int __devinit
cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
223 unsigned long *memory_bar
);
226 /* performant mode helper functions */
227 static void calc_bucket_map(int *bucket
, int num_buckets
, int nsgs
,
229 static void cciss_put_controller_into_performant_mode(ctlr_info_t
*h
);
231 #ifdef CONFIG_PROC_FS
232 static void cciss_procinit(ctlr_info_t
*h
);
234 static void cciss_procinit(ctlr_info_t
*h
)
237 #endif /* CONFIG_PROC_FS */
240 static int cciss_compat_ioctl(struct block_device
*, fmode_t
,
241 unsigned, unsigned long);
244 static const struct block_device_operations cciss_fops
= {
245 .owner
= THIS_MODULE
,
246 .open
= cciss_unlocked_open
,
247 .release
= cciss_release
,
249 .getgeo
= cciss_getgeo
,
251 .compat_ioctl
= cciss_compat_ioctl
,
253 .revalidate_disk
= cciss_revalidate
,
256 /* set_performant_mode: Modify the tag for cciss performant
257 * set bit 0 for pull model, bits 3-1 for block fetch
260 static void set_performant_mode(ctlr_info_t
*h
, CommandList_struct
*c
)
262 if (likely(h
->transMethod
== CFGTBL_Trans_Performant
))
263 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
267 * Enqueuing and dequeuing functions for cmdlists.
269 static inline void addQ(struct hlist_head
*list
, CommandList_struct
*c
)
271 hlist_add_head(&c
->list
, list
);
274 static inline void removeQ(CommandList_struct
*c
)
277 * After kexec/dump some commands might still
278 * be in flight, which the firmware will try
279 * to complete. Resetting the firmware doesn't work
280 * with old fw revisions, so we have to mark
281 * them off as 'stale' to prevent the driver from
284 if (WARN_ON(hlist_unhashed(&c
->list
))) {
285 c
->cmd_type
= CMD_MSG_STALE
;
289 hlist_del_init(&c
->list
);
292 static void enqueue_cmd_and_start_io(ctlr_info_t
*h
,
293 CommandList_struct
*c
)
296 set_performant_mode(h
, c
);
297 spin_lock_irqsave(&h
->lock
, flags
);
301 spin_unlock_irqrestore(&h
->lock
, flags
);
304 static void cciss_free_sg_chain_blocks(SGDescriptor_struct
**cmd_sg_list
,
311 for (i
= 0; i
< nr_cmds
; i
++) {
312 kfree(cmd_sg_list
[i
]);
313 cmd_sg_list
[i
] = NULL
;
318 static SGDescriptor_struct
**cciss_allocate_sg_chain_blocks(
319 ctlr_info_t
*h
, int chainsize
, int nr_cmds
)
322 SGDescriptor_struct
**cmd_sg_list
;
327 cmd_sg_list
= kmalloc(sizeof(*cmd_sg_list
) * nr_cmds
, GFP_KERNEL
);
331 /* Build up chain blocks for each command */
332 for (j
= 0; j
< nr_cmds
; j
++) {
333 /* Need a block of chainsized s/g elements. */
334 cmd_sg_list
[j
] = kmalloc((chainsize
*
335 sizeof(*cmd_sg_list
[j
])), GFP_KERNEL
);
336 if (!cmd_sg_list
[j
]) {
337 dev_err(&h
->pdev
->dev
, "Cannot get memory "
338 "for s/g chains.\n");
344 cciss_free_sg_chain_blocks(cmd_sg_list
, nr_cmds
);
348 static void cciss_unmap_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
)
350 SGDescriptor_struct
*chain_sg
;
353 if (c
->Header
.SGTotal
<= h
->max_cmd_sgentries
)
356 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
357 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
358 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
359 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
362 static void cciss_map_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
,
363 SGDescriptor_struct
*chain_block
, int len
)
365 SGDescriptor_struct
*chain_sg
;
368 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
369 chain_sg
->Ext
= CCISS_SG_CHAIN
;
371 temp64
.val
= pci_map_single(h
->pdev
, chain_block
, len
,
373 chain_sg
->Addr
.lower
= temp64
.val32
.lower
;
374 chain_sg
->Addr
.upper
= temp64
.val32
.upper
;
377 #include "cciss_scsi.c" /* For SCSI tape support */
379 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
382 #define RAID_UNKNOWN (sizeof(raid_label) / sizeof(raid_label[0])-1)
384 #ifdef CONFIG_PROC_FS
387 * Report information about this controller.
389 #define ENG_GIG 1000000000
390 #define ENG_GIG_FACTOR (ENG_GIG/512)
391 #define ENGAGE_SCSI "engage scsi"
393 static struct proc_dir_entry
*proc_cciss
;
395 static void cciss_seq_show_header(struct seq_file
*seq
)
397 ctlr_info_t
*h
= seq
->private;
399 seq_printf(seq
, "%s: HP %s Controller\n"
400 "Board ID: 0x%08lx\n"
401 "Firmware Version: %c%c%c%c\n"
403 "Logical drives: %d\n"
404 "Current Q depth: %d\n"
405 "Current # commands on controller: %d\n"
406 "Max Q depth since init: %d\n"
407 "Max # commands on controller since init: %d\n"
408 "Max SG entries since init: %d\n",
411 (unsigned long)h
->board_id
,
412 h
->firm_ver
[0], h
->firm_ver
[1], h
->firm_ver
[2],
413 h
->firm_ver
[3], (unsigned int)h
->intr
[PERF_MODE_INT
],
415 h
->Qdepth
, h
->commands_outstanding
,
416 h
->maxQsinceinit
, h
->max_outstanding
, h
->maxSG
);
418 #ifdef CONFIG_CISS_SCSI_TAPE
419 cciss_seq_tape_report(seq
, h
);
420 #endif /* CONFIG_CISS_SCSI_TAPE */
423 static void *cciss_seq_start(struct seq_file
*seq
, loff_t
*pos
)
425 ctlr_info_t
*h
= seq
->private;
428 /* prevent displaying bogus info during configuration
429 * or deconfiguration of a logical volume
431 spin_lock_irqsave(&h
->lock
, flags
);
432 if (h
->busy_configuring
) {
433 spin_unlock_irqrestore(&h
->lock
, flags
);
434 return ERR_PTR(-EBUSY
);
436 h
->busy_configuring
= 1;
437 spin_unlock_irqrestore(&h
->lock
, flags
);
440 cciss_seq_show_header(seq
);
445 static int cciss_seq_show(struct seq_file
*seq
, void *v
)
447 sector_t vol_sz
, vol_sz_frac
;
448 ctlr_info_t
*h
= seq
->private;
449 unsigned ctlr
= h
->ctlr
;
451 drive_info_struct
*drv
= h
->drv
[*pos
];
453 if (*pos
> h
->highest_lun
)
456 if (drv
== NULL
) /* it's possible for h->drv[] to have holes. */
462 vol_sz
= drv
->nr_blocks
;
463 vol_sz_frac
= sector_div(vol_sz
, ENG_GIG_FACTOR
);
465 sector_div(vol_sz_frac
, ENG_GIG_FACTOR
);
467 if (drv
->raid_level
< 0 || drv
->raid_level
> RAID_UNKNOWN
)
468 drv
->raid_level
= RAID_UNKNOWN
;
469 seq_printf(seq
, "cciss/c%dd%d:"
470 "\t%4u.%02uGB\tRAID %s\n",
471 ctlr
, (int) *pos
, (int)vol_sz
, (int)vol_sz_frac
,
472 raid_label
[drv
->raid_level
]);
476 static void *cciss_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
478 ctlr_info_t
*h
= seq
->private;
480 if (*pos
> h
->highest_lun
)
487 static void cciss_seq_stop(struct seq_file
*seq
, void *v
)
489 ctlr_info_t
*h
= seq
->private;
491 /* Only reset h->busy_configuring if we succeeded in setting
492 * it during cciss_seq_start. */
493 if (v
== ERR_PTR(-EBUSY
))
496 h
->busy_configuring
= 0;
499 static const struct seq_operations cciss_seq_ops
= {
500 .start
= cciss_seq_start
,
501 .show
= cciss_seq_show
,
502 .next
= cciss_seq_next
,
503 .stop
= cciss_seq_stop
,
506 static int cciss_seq_open(struct inode
*inode
, struct file
*file
)
508 int ret
= seq_open(file
, &cciss_seq_ops
);
509 struct seq_file
*seq
= file
->private_data
;
512 seq
->private = PDE(inode
)->data
;
518 cciss_proc_write(struct file
*file
, const char __user
*buf
,
519 size_t length
, loff_t
*ppos
)
524 #ifndef CONFIG_CISS_SCSI_TAPE
528 if (!buf
|| length
> PAGE_SIZE
- 1)
531 buffer
= (char *)__get_free_page(GFP_KERNEL
);
536 if (copy_from_user(buffer
, buf
, length
))
538 buffer
[length
] = '\0';
540 #ifdef CONFIG_CISS_SCSI_TAPE
541 if (strncmp(ENGAGE_SCSI
, buffer
, sizeof ENGAGE_SCSI
- 1) == 0) {
542 struct seq_file
*seq
= file
->private_data
;
543 ctlr_info_t
*h
= seq
->private;
545 err
= cciss_engage_scsi(h
);
549 #endif /* CONFIG_CISS_SCSI_TAPE */
551 /* might be nice to have "disengage" too, but it's not
552 safely possible. (only 1 module use count, lock issues.) */
555 free_page((unsigned long)buffer
);
559 static const struct file_operations cciss_proc_fops
= {
560 .owner
= THIS_MODULE
,
561 .open
= cciss_seq_open
,
564 .release
= seq_release
,
565 .write
= cciss_proc_write
,
568 static void __devinit
cciss_procinit(ctlr_info_t
*h
)
570 struct proc_dir_entry
*pde
;
572 if (proc_cciss
== NULL
)
573 proc_cciss
= proc_mkdir("driver/cciss", NULL
);
576 pde
= proc_create_data(h
->devname
, S_IWUSR
| S_IRUSR
| S_IRGRP
|
578 &cciss_proc_fops
, h
);
580 #endif /* CONFIG_PROC_FS */
582 #define MAX_PRODUCT_NAME_LEN 19
584 #define to_hba(n) container_of(n, struct ctlr_info, dev)
585 #define to_drv(n) container_of(n, drive_info_struct, dev)
587 static ssize_t
host_store_rescan(struct device
*dev
,
588 struct device_attribute
*attr
,
589 const char *buf
, size_t count
)
591 struct ctlr_info
*h
= to_hba(dev
);
594 wake_up_process(cciss_scan_thread
);
595 wait_for_completion_interruptible(&h
->scan_wait
);
599 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
601 static ssize_t
dev_show_unique_id(struct device
*dev
,
602 struct device_attribute
*attr
,
605 drive_info_struct
*drv
= to_drv(dev
);
606 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
611 spin_lock_irqsave(&h
->lock
, flags
);
612 if (h
->busy_configuring
)
615 memcpy(sn
, drv
->serial_no
, sizeof(sn
));
616 spin_unlock_irqrestore(&h
->lock
, flags
);
621 return snprintf(buf
, 16 * 2 + 2,
622 "%02X%02X%02X%02X%02X%02X%02X%02X"
623 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
624 sn
[0], sn
[1], sn
[2], sn
[3],
625 sn
[4], sn
[5], sn
[6], sn
[7],
626 sn
[8], sn
[9], sn
[10], sn
[11],
627 sn
[12], sn
[13], sn
[14], sn
[15]);
629 static DEVICE_ATTR(unique_id
, S_IRUGO
, dev_show_unique_id
, NULL
);
631 static ssize_t
dev_show_vendor(struct device
*dev
,
632 struct device_attribute
*attr
,
635 drive_info_struct
*drv
= to_drv(dev
);
636 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
637 char vendor
[VENDOR_LEN
+ 1];
641 spin_lock_irqsave(&h
->lock
, flags
);
642 if (h
->busy_configuring
)
645 memcpy(vendor
, drv
->vendor
, VENDOR_LEN
+ 1);
646 spin_unlock_irqrestore(&h
->lock
, flags
);
651 return snprintf(buf
, sizeof(vendor
) + 1, "%s\n", drv
->vendor
);
653 static DEVICE_ATTR(vendor
, S_IRUGO
, dev_show_vendor
, NULL
);
655 static ssize_t
dev_show_model(struct device
*dev
,
656 struct device_attribute
*attr
,
659 drive_info_struct
*drv
= to_drv(dev
);
660 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
661 char model
[MODEL_LEN
+ 1];
665 spin_lock_irqsave(&h
->lock
, flags
);
666 if (h
->busy_configuring
)
669 memcpy(model
, drv
->model
, MODEL_LEN
+ 1);
670 spin_unlock_irqrestore(&h
->lock
, flags
);
675 return snprintf(buf
, sizeof(model
) + 1, "%s\n", drv
->model
);
677 static DEVICE_ATTR(model
, S_IRUGO
, dev_show_model
, NULL
);
679 static ssize_t
dev_show_rev(struct device
*dev
,
680 struct device_attribute
*attr
,
683 drive_info_struct
*drv
= to_drv(dev
);
684 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
685 char rev
[REV_LEN
+ 1];
689 spin_lock_irqsave(&h
->lock
, flags
);
690 if (h
->busy_configuring
)
693 memcpy(rev
, drv
->rev
, REV_LEN
+ 1);
694 spin_unlock_irqrestore(&h
->lock
, flags
);
699 return snprintf(buf
, sizeof(rev
) + 1, "%s\n", drv
->rev
);
701 static DEVICE_ATTR(rev
, S_IRUGO
, dev_show_rev
, NULL
);
703 static ssize_t
cciss_show_lunid(struct device
*dev
,
704 struct device_attribute
*attr
, char *buf
)
706 drive_info_struct
*drv
= to_drv(dev
);
707 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
709 unsigned char lunid
[8];
711 spin_lock_irqsave(&h
->lock
, flags
);
712 if (h
->busy_configuring
) {
713 spin_unlock_irqrestore(&h
->lock
, flags
);
717 spin_unlock_irqrestore(&h
->lock
, flags
);
720 memcpy(lunid
, drv
->LunID
, sizeof(lunid
));
721 spin_unlock_irqrestore(&h
->lock
, flags
);
722 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
723 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
724 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
726 static DEVICE_ATTR(lunid
, S_IRUGO
, cciss_show_lunid
, NULL
);
728 static ssize_t
cciss_show_raid_level(struct device
*dev
,
729 struct device_attribute
*attr
, char *buf
)
731 drive_info_struct
*drv
= to_drv(dev
);
732 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
736 spin_lock_irqsave(&h
->lock
, flags
);
737 if (h
->busy_configuring
) {
738 spin_unlock_irqrestore(&h
->lock
, flags
);
741 raid
= drv
->raid_level
;
742 spin_unlock_irqrestore(&h
->lock
, flags
);
743 if (raid
< 0 || raid
> RAID_UNKNOWN
)
746 return snprintf(buf
, strlen(raid_label
[raid
]) + 7, "RAID %s\n",
749 static DEVICE_ATTR(raid_level
, S_IRUGO
, cciss_show_raid_level
, NULL
);
751 static ssize_t
cciss_show_usage_count(struct device
*dev
,
752 struct device_attribute
*attr
, char *buf
)
754 drive_info_struct
*drv
= to_drv(dev
);
755 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
759 spin_lock_irqsave(&h
->lock
, flags
);
760 if (h
->busy_configuring
) {
761 spin_unlock_irqrestore(&h
->lock
, flags
);
764 count
= drv
->usage_count
;
765 spin_unlock_irqrestore(&h
->lock
, flags
);
766 return snprintf(buf
, 20, "%d\n", count
);
768 static DEVICE_ATTR(usage_count
, S_IRUGO
, cciss_show_usage_count
, NULL
);
770 static struct attribute
*cciss_host_attrs
[] = {
771 &dev_attr_rescan
.attr
,
775 static struct attribute_group cciss_host_attr_group
= {
776 .attrs
= cciss_host_attrs
,
779 static const struct attribute_group
*cciss_host_attr_groups
[] = {
780 &cciss_host_attr_group
,
784 static struct device_type cciss_host_type
= {
785 .name
= "cciss_host",
786 .groups
= cciss_host_attr_groups
,
787 .release
= cciss_hba_release
,
790 static struct attribute
*cciss_dev_attrs
[] = {
791 &dev_attr_unique_id
.attr
,
792 &dev_attr_model
.attr
,
793 &dev_attr_vendor
.attr
,
795 &dev_attr_lunid
.attr
,
796 &dev_attr_raid_level
.attr
,
797 &dev_attr_usage_count
.attr
,
801 static struct attribute_group cciss_dev_attr_group
= {
802 .attrs
= cciss_dev_attrs
,
805 static const struct attribute_group
*cciss_dev_attr_groups
[] = {
806 &cciss_dev_attr_group
,
810 static struct device_type cciss_dev_type
= {
811 .name
= "cciss_device",
812 .groups
= cciss_dev_attr_groups
,
813 .release
= cciss_device_release
,
816 static struct bus_type cciss_bus_type
= {
821 * cciss_hba_release is called when the reference count
822 * of h->dev goes to zero.
824 static void cciss_hba_release(struct device
*dev
)
827 * nothing to do, but need this to avoid a warning
828 * about not having a release handler from lib/kref.c.
833 * Initialize sysfs entry for each controller. This sets up and registers
834 * the 'cciss#' directory for each individual controller under
835 * /sys/bus/pci/devices/<dev>/.
837 static int cciss_create_hba_sysfs_entry(struct ctlr_info
*h
)
839 device_initialize(&h
->dev
);
840 h
->dev
.type
= &cciss_host_type
;
841 h
->dev
.bus
= &cciss_bus_type
;
842 dev_set_name(&h
->dev
, "%s", h
->devname
);
843 h
->dev
.parent
= &h
->pdev
->dev
;
845 return device_add(&h
->dev
);
849 * Remove sysfs entries for an hba.
851 static void cciss_destroy_hba_sysfs_entry(struct ctlr_info
*h
)
854 put_device(&h
->dev
); /* final put. */
857 /* cciss_device_release is called when the reference count
858 * of h->drv[x]dev goes to zero.
860 static void cciss_device_release(struct device
*dev
)
862 drive_info_struct
*drv
= to_drv(dev
);
867 * Initialize sysfs for each logical drive. This sets up and registers
868 * the 'c#d#' directory for each individual logical drive under
869 * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from
870 * /sys/block/cciss!c#d# to this entry.
872 static long cciss_create_ld_sysfs_entry(struct ctlr_info
*h
,
877 if (h
->drv
[drv_index
]->device_initialized
)
880 dev
= &h
->drv
[drv_index
]->dev
;
881 device_initialize(dev
);
882 dev
->type
= &cciss_dev_type
;
883 dev
->bus
= &cciss_bus_type
;
884 dev_set_name(dev
, "c%dd%d", h
->ctlr
, drv_index
);
885 dev
->parent
= &h
->dev
;
886 h
->drv
[drv_index
]->device_initialized
= 1;
887 return device_add(dev
);
891 * Remove sysfs entries for a logical drive.
893 static void cciss_destroy_ld_sysfs_entry(struct ctlr_info
*h
, int drv_index
,
896 struct device
*dev
= &h
->drv
[drv_index
]->dev
;
898 /* special case for c*d0, we only destroy it on controller exit */
899 if (drv_index
== 0 && !ctlr_exiting
)
903 put_device(dev
); /* the "final" put. */
904 h
->drv
[drv_index
] = NULL
;
908 * For operations that cannot sleep, a command block is allocated at init,
909 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
910 * which ones are free or in use.
912 static CommandList_struct
*cmd_alloc(ctlr_info_t
*h
)
914 CommandList_struct
*c
;
917 dma_addr_t cmd_dma_handle
, err_dma_handle
;
920 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
923 } while (test_and_set_bit(i
& (BITS_PER_LONG
- 1),
924 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
)) != 0);
926 printk(KERN_DEBUG
"cciss: using command buffer %d\n", i
);
929 memset(c
, 0, sizeof(CommandList_struct
));
930 cmd_dma_handle
= h
->cmd_pool_dhandle
+ i
* sizeof(CommandList_struct
);
931 c
->err_info
= h
->errinfo_pool
+ i
;
932 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
933 err_dma_handle
= h
->errinfo_pool_dhandle
934 + i
* sizeof(ErrorInfo_struct
);
939 INIT_HLIST_NODE(&c
->list
);
940 c
->busaddr
= (__u32
) cmd_dma_handle
;
941 temp64
.val
= (__u64
) err_dma_handle
;
942 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
943 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
944 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
950 /* allocate a command using pci_alloc_consistent, used for ioctls,
951 * etc., not for the main i/o path.
953 static CommandList_struct
*cmd_special_alloc(ctlr_info_t
*h
)
955 CommandList_struct
*c
;
957 dma_addr_t cmd_dma_handle
, err_dma_handle
;
959 c
= (CommandList_struct
*) pci_alloc_consistent(h
->pdev
,
960 sizeof(CommandList_struct
), &cmd_dma_handle
);
963 memset(c
, 0, sizeof(CommandList_struct
));
967 c
->err_info
= (ErrorInfo_struct
*)
968 pci_alloc_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
971 if (c
->err_info
== NULL
) {
972 pci_free_consistent(h
->pdev
,
973 sizeof(CommandList_struct
), c
, cmd_dma_handle
);
976 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
978 INIT_HLIST_NODE(&c
->list
);
979 c
->busaddr
= (__u32
) cmd_dma_handle
;
980 temp64
.val
= (__u64
) err_dma_handle
;
981 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
982 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
983 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
989 static void cmd_free(ctlr_info_t
*h
, CommandList_struct
*c
)
994 clear_bit(i
& (BITS_PER_LONG
- 1),
995 h
->cmd_pool_bits
+ (i
/ BITS_PER_LONG
));
999 static void cmd_special_free(ctlr_info_t
*h
, CommandList_struct
*c
)
1003 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
1004 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
1005 pci_free_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
1006 c
->err_info
, (dma_addr_t
) temp64
.val
);
1007 pci_free_consistent(h
->pdev
, sizeof(CommandList_struct
),
1008 c
, (dma_addr_t
) c
->busaddr
);
1011 static inline ctlr_info_t
*get_host(struct gendisk
*disk
)
1013 return disk
->queue
->queuedata
;
1016 static inline drive_info_struct
*get_drv(struct gendisk
*disk
)
1018 return disk
->private_data
;
1022 * Open. Make sure the device is really there.
1024 static int cciss_open(struct block_device
*bdev
, fmode_t mode
)
1026 ctlr_info_t
*h
= get_host(bdev
->bd_disk
);
1027 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1030 printk(KERN_DEBUG
"cciss_open %s\n", bdev
->bd_disk
->disk_name
);
1031 #endif /* CCISS_DEBUG */
1033 if (drv
->busy_configuring
)
1036 * Root is allowed to open raw volume zero even if it's not configured
1037 * so array config can still work. Root is also allowed to open any
1038 * volume that has a LUN ID, so it can issue IOCTL to reread the
1039 * disk information. I don't think I really like this
1040 * but I'm already using way to many device nodes to claim another one
1041 * for "raw controller".
1043 if (drv
->heads
== 0) {
1044 if (MINOR(bdev
->bd_dev
) != 0) { /* not node 0? */
1045 /* if not node 0 make sure it is a partition = 0 */
1046 if (MINOR(bdev
->bd_dev
) & 0x0f) {
1048 /* if it is, make sure we have a LUN ID */
1049 } else if (memcmp(drv
->LunID
, CTLR_LUNID
,
1050 sizeof(drv
->LunID
))) {
1054 if (!capable(CAP_SYS_ADMIN
))
1062 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
)
1067 ret
= cciss_open(bdev
, mode
);
1074 * Close. Sync first.
1076 static int cciss_release(struct gendisk
*disk
, fmode_t mode
)
1079 drive_info_struct
*drv
;
1083 drv
= get_drv(disk
);
1086 printk(KERN_DEBUG
"cciss_release %s\n", disk
->disk_name
);
1087 #endif /* CCISS_DEBUG */
1095 static int do_ioctl(struct block_device
*bdev
, fmode_t mode
,
1096 unsigned cmd
, unsigned long arg
)
1100 ret
= cciss_ioctl(bdev
, mode
, cmd
, arg
);
1105 #ifdef CONFIG_COMPAT
1107 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1108 unsigned cmd
, unsigned long arg
);
1109 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1110 unsigned cmd
, unsigned long arg
);
1112 static int cciss_compat_ioctl(struct block_device
*bdev
, fmode_t mode
,
1113 unsigned cmd
, unsigned long arg
)
1116 case CCISS_GETPCIINFO
:
1117 case CCISS_GETINTINFO
:
1118 case CCISS_SETINTINFO
:
1119 case CCISS_GETNODENAME
:
1120 case CCISS_SETNODENAME
:
1121 case CCISS_GETHEARTBEAT
:
1122 case CCISS_GETBUSTYPES
:
1123 case CCISS_GETFIRMVER
:
1124 case CCISS_GETDRIVVER
:
1125 case CCISS_REVALIDVOLS
:
1126 case CCISS_DEREGDISK
:
1127 case CCISS_REGNEWDISK
:
1129 case CCISS_RESCANDISK
:
1130 case CCISS_GETLUNINFO
:
1131 return do_ioctl(bdev
, mode
, cmd
, arg
);
1133 case CCISS_PASSTHRU32
:
1134 return cciss_ioctl32_passthru(bdev
, mode
, cmd
, arg
);
1135 case CCISS_BIG_PASSTHRU32
:
1136 return cciss_ioctl32_big_passthru(bdev
, mode
, cmd
, arg
);
1139 return -ENOIOCTLCMD
;
1143 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1144 unsigned cmd
, unsigned long arg
)
1146 IOCTL32_Command_struct __user
*arg32
=
1147 (IOCTL32_Command_struct __user
*) arg
;
1148 IOCTL_Command_struct arg64
;
1149 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
1155 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1156 sizeof(arg64
.LUN_info
));
1158 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1159 sizeof(arg64
.Request
));
1161 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1162 sizeof(arg64
.error_info
));
1163 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1164 err
|= get_user(cp
, &arg32
->buf
);
1165 arg64
.buf
= compat_ptr(cp
);
1166 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1171 err
= do_ioctl(bdev
, mode
, CCISS_PASSTHRU
, (unsigned long)p
);
1175 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1176 sizeof(arg32
->error_info
));
1182 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1183 unsigned cmd
, unsigned long arg
)
1185 BIG_IOCTL32_Command_struct __user
*arg32
=
1186 (BIG_IOCTL32_Command_struct __user
*) arg
;
1187 BIG_IOCTL_Command_struct arg64
;
1188 BIG_IOCTL_Command_struct __user
*p
=
1189 compat_alloc_user_space(sizeof(arg64
));
1195 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1196 sizeof(arg64
.LUN_info
));
1198 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1199 sizeof(arg64
.Request
));
1201 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1202 sizeof(arg64
.error_info
));
1203 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1204 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
1205 err
|= get_user(cp
, &arg32
->buf
);
1206 arg64
.buf
= compat_ptr(cp
);
1207 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1212 err
= do_ioctl(bdev
, mode
, CCISS_BIG_PASSTHRU
, (unsigned long)p
);
1216 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1217 sizeof(arg32
->error_info
));
1224 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1226 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1228 if (!drv
->cylinders
)
1231 geo
->heads
= drv
->heads
;
1232 geo
->sectors
= drv
->sectors
;
1233 geo
->cylinders
= drv
->cylinders
;
1237 static void check_ioctl_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
1239 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
1240 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
1241 (void)check_for_unit_attention(h
, c
);
1246 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
1247 unsigned int cmd
, unsigned long arg
)
1249 struct gendisk
*disk
= bdev
->bd_disk
;
1250 ctlr_info_t
*h
= get_host(disk
);
1251 drive_info_struct
*drv
= get_drv(disk
);
1252 void __user
*argp
= (void __user
*)arg
;
1255 printk(KERN_DEBUG
"cciss_ioctl: Called with cmd=%x %lx\n", cmd
, arg
);
1256 #endif /* CCISS_DEBUG */
1259 case CCISS_GETPCIINFO
:
1261 cciss_pci_info_struct pciinfo
;
1265 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
1266 pciinfo
.bus
= h
->pdev
->bus
->number
;
1267 pciinfo
.dev_fn
= h
->pdev
->devfn
;
1268 pciinfo
.board_id
= h
->board_id
;
1270 (argp
, &pciinfo
, sizeof(cciss_pci_info_struct
)))
1274 case CCISS_GETINTINFO
:
1276 cciss_coalint_struct intinfo
;
1280 readl(&h
->cfgtable
->HostWrite
.CoalIntDelay
);
1282 readl(&h
->cfgtable
->HostWrite
.CoalIntCount
);
1284 (argp
, &intinfo
, sizeof(cciss_coalint_struct
)))
1288 case CCISS_SETINTINFO
:
1290 cciss_coalint_struct intinfo
;
1291 unsigned long flags
;
1296 if (!capable(CAP_SYS_ADMIN
))
1299 (&intinfo
, argp
, sizeof(cciss_coalint_struct
)))
1301 if ((intinfo
.delay
== 0) && (intinfo
.count
== 0))
1303 // printk("cciss_ioctl: delay and count cannot be 0\n");
1306 spin_lock_irqsave(&h
->lock
, flags
);
1307 /* Update the field, and then ring the doorbell */
1308 writel(intinfo
.delay
,
1309 &(h
->cfgtable
->HostWrite
.CoalIntDelay
));
1310 writel(intinfo
.count
,
1311 &(h
->cfgtable
->HostWrite
.CoalIntCount
));
1312 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1314 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1315 if (!(readl(h
->vaddr
+ SA5_DOORBELL
)
1316 & CFGTBL_ChangeReq
))
1318 /* delay and try again */
1321 spin_unlock_irqrestore(&h
->lock
, flags
);
1322 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1326 case CCISS_GETNODENAME
:
1328 NodeName_type NodeName
;
1333 for (i
= 0; i
< 16; i
++)
1335 readb(&h
->cfgtable
->ServerName
[i
]);
1336 if (copy_to_user(argp
, NodeName
, sizeof(NodeName_type
)))
1340 case CCISS_SETNODENAME
:
1342 NodeName_type NodeName
;
1343 unsigned long flags
;
1348 if (!capable(CAP_SYS_ADMIN
))
1352 (NodeName
, argp
, sizeof(NodeName_type
)))
1355 spin_lock_irqsave(&h
->lock
, flags
);
1357 /* Update the field, and then ring the doorbell */
1358 for (i
= 0; i
< 16; i
++)
1360 &h
->cfgtable
->ServerName
[i
]);
1362 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1364 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1365 if (!(readl(h
->vaddr
+ SA5_DOORBELL
)
1366 & CFGTBL_ChangeReq
))
1368 /* delay and try again */
1371 spin_unlock_irqrestore(&h
->lock
, flags
);
1372 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1377 case CCISS_GETHEARTBEAT
:
1379 Heartbeat_type heartbeat
;
1383 heartbeat
= readl(&h
->cfgtable
->HeartBeat
);
1385 (argp
, &heartbeat
, sizeof(Heartbeat_type
)))
1389 case CCISS_GETBUSTYPES
:
1391 BusTypes_type BusTypes
;
1395 BusTypes
= readl(&h
->cfgtable
->BusTypes
);
1397 (argp
, &BusTypes
, sizeof(BusTypes_type
)))
1401 case CCISS_GETFIRMVER
:
1403 FirmwareVer_type firmware
;
1407 memcpy(firmware
, h
->firm_ver
, 4);
1410 (argp
, firmware
, sizeof(FirmwareVer_type
)))
1414 case CCISS_GETDRIVVER
:
1416 DriverVer_type DriverVer
= DRIVER_VERSION
;
1422 (argp
, &DriverVer
, sizeof(DriverVer_type
)))
1427 case CCISS_DEREGDISK
:
1429 case CCISS_REVALIDVOLS
:
1430 return rebuild_lun_table(h
, 0, 1);
1432 case CCISS_GETLUNINFO
:{
1433 LogvolInfo_struct luninfo
;
1435 memcpy(&luninfo
.LunID
, drv
->LunID
,
1436 sizeof(luninfo
.LunID
));
1437 luninfo
.num_opens
= drv
->usage_count
;
1438 luninfo
.num_parts
= 0;
1439 if (copy_to_user(argp
, &luninfo
,
1440 sizeof(LogvolInfo_struct
)))
1444 case CCISS_PASSTHRU
:
1446 IOCTL_Command_struct iocommand
;
1447 CommandList_struct
*c
;
1450 DECLARE_COMPLETION_ONSTACK(wait
);
1455 if (!capable(CAP_SYS_RAWIO
))
1459 (&iocommand
, argp
, sizeof(IOCTL_Command_struct
)))
1461 if ((iocommand
.buf_size
< 1) &&
1462 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
1465 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
1466 /* Check kmalloc limits */
1467 if (iocommand
.buf_size
> 128000)
1470 if (iocommand
.buf_size
> 0) {
1471 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
1475 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
1476 /* Copy the data into the buffer we created */
1478 (buff
, iocommand
.buf
, iocommand
.buf_size
)) {
1483 memset(buff
, 0, iocommand
.buf_size
);
1485 c
= cmd_special_alloc(h
);
1490 /* Fill in the command type */
1491 c
->cmd_type
= CMD_IOCTL_PEND
;
1492 /* Fill in Command Header */
1493 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
1494 if (iocommand
.buf_size
> 0) /* buffer to fill */
1496 c
->Header
.SGList
= 1;
1497 c
->Header
.SGTotal
= 1;
1498 } else /* no buffers to fill */
1500 c
->Header
.SGList
= 0;
1501 c
->Header
.SGTotal
= 0;
1503 c
->Header
.LUN
= iocommand
.LUN_info
;
1504 /* use the kernel address the cmd block for tag */
1505 c
->Header
.Tag
.lower
= c
->busaddr
;
1507 /* Fill in Request block */
1508 c
->Request
= iocommand
.Request
;
1510 /* Fill in the scatter gather information */
1511 if (iocommand
.buf_size
> 0) {
1512 temp64
.val
= pci_map_single(h
->pdev
, buff
,
1514 PCI_DMA_BIDIRECTIONAL
);
1515 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
1516 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
1517 c
->SG
[0].Len
= iocommand
.buf_size
;
1518 c
->SG
[0].Ext
= 0; /* we are not chaining */
1522 enqueue_cmd_and_start_io(h
, c
);
1523 wait_for_completion(&wait
);
1525 /* unlock the buffers from DMA */
1526 temp64
.val32
.lower
= c
->SG
[0].Addr
.lower
;
1527 temp64
.val32
.upper
= c
->SG
[0].Addr
.upper
;
1528 pci_unmap_single(h
->pdev
, (dma_addr_t
) temp64
.val
,
1530 PCI_DMA_BIDIRECTIONAL
);
1532 check_ioctl_unit_attention(h
, c
);
1534 /* Copy the error information out */
1535 iocommand
.error_info
= *(c
->err_info
);
1537 (argp
, &iocommand
, sizeof(IOCTL_Command_struct
))) {
1539 cmd_special_free(h
, c
);
1543 if (iocommand
.Request
.Type
.Direction
== XFER_READ
) {
1544 /* Copy the data out of the buffer we created */
1546 (iocommand
.buf
, buff
, iocommand
.buf_size
)) {
1548 cmd_special_free(h
, c
);
1553 cmd_special_free(h
, c
);
1556 case CCISS_BIG_PASSTHRU
:{
1557 BIG_IOCTL_Command_struct
*ioc
;
1558 CommandList_struct
*c
;
1559 unsigned char **buff
= NULL
;
1560 int *buff_size
= NULL
;
1565 DECLARE_COMPLETION_ONSTACK(wait
);
1568 BYTE __user
*data_ptr
;
1572 if (!capable(CAP_SYS_RAWIO
))
1574 ioc
= (BIG_IOCTL_Command_struct
*)
1575 kmalloc(sizeof(*ioc
), GFP_KERNEL
);
1580 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
1584 if ((ioc
->buf_size
< 1) &&
1585 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
1589 /* Check kmalloc limits using all SGs */
1590 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
1594 if (ioc
->buf_size
> ioc
->malloc_size
* MAXSGENTRIES
) {
1599 kzalloc(MAXSGENTRIES
* sizeof(char *), GFP_KERNEL
);
1604 buff_size
= kmalloc(MAXSGENTRIES
* sizeof(int),
1610 left
= ioc
->buf_size
;
1611 data_ptr
= ioc
->buf
;
1614 ioc
->malloc_size
) ? ioc
->
1616 buff_size
[sg_used
] = sz
;
1617 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
1618 if (buff
[sg_used
] == NULL
) {
1622 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
1624 (buff
[sg_used
], data_ptr
, sz
)) {
1629 memset(buff
[sg_used
], 0, sz
);
1635 c
= cmd_special_alloc(h
);
1640 c
->cmd_type
= CMD_IOCTL_PEND
;
1641 c
->Header
.ReplyQueue
= 0;
1643 if (ioc
->buf_size
> 0) {
1644 c
->Header
.SGList
= sg_used
;
1645 c
->Header
.SGTotal
= sg_used
;
1647 c
->Header
.SGList
= 0;
1648 c
->Header
.SGTotal
= 0;
1650 c
->Header
.LUN
= ioc
->LUN_info
;
1651 c
->Header
.Tag
.lower
= c
->busaddr
;
1653 c
->Request
= ioc
->Request
;
1654 if (ioc
->buf_size
> 0) {
1655 for (i
= 0; i
< sg_used
; i
++) {
1657 pci_map_single(h
->pdev
, buff
[i
],
1659 PCI_DMA_BIDIRECTIONAL
);
1660 c
->SG
[i
].Addr
.lower
=
1662 c
->SG
[i
].Addr
.upper
=
1664 c
->SG
[i
].Len
= buff_size
[i
];
1665 c
->SG
[i
].Ext
= 0; /* we are not chaining */
1669 enqueue_cmd_and_start_io(h
, c
);
1670 wait_for_completion(&wait
);
1671 /* unlock the buffers from DMA */
1672 for (i
= 0; i
< sg_used
; i
++) {
1673 temp64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1674 temp64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1675 pci_unmap_single(h
->pdev
,
1676 (dma_addr_t
) temp64
.val
, buff_size
[i
],
1677 PCI_DMA_BIDIRECTIONAL
);
1679 check_ioctl_unit_attention(h
, c
);
1680 /* Copy the error information out */
1681 ioc
->error_info
= *(c
->err_info
);
1682 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
1683 cmd_special_free(h
, c
);
1687 if (ioc
->Request
.Type
.Direction
== XFER_READ
) {
1688 /* Copy the data out of the buffer we created */
1689 BYTE __user
*ptr
= ioc
->buf
;
1690 for (i
= 0; i
< sg_used
; i
++) {
1692 (ptr
, buff
[i
], buff_size
[i
])) {
1693 cmd_special_free(h
, c
);
1697 ptr
+= buff_size
[i
];
1700 cmd_special_free(h
, c
);
1704 for (i
= 0; i
< sg_used
; i
++)
1713 /* scsi_cmd_ioctl handles these, below, though some are not */
1714 /* very meaningful for cciss. SG_IO is the main one people want. */
1716 case SG_GET_VERSION_NUM
:
1717 case SG_SET_TIMEOUT
:
1718 case SG_GET_TIMEOUT
:
1719 case SG_GET_RESERVED_SIZE
:
1720 case SG_SET_RESERVED_SIZE
:
1721 case SG_EMULATED_HOST
:
1723 case SCSI_IOCTL_SEND_COMMAND
:
1724 return scsi_cmd_ioctl(disk
->queue
, disk
, mode
, cmd
, argp
);
1726 /* scsi_cmd_ioctl would normally handle these, below, but */
1727 /* they aren't a good fit for cciss, as CD-ROMs are */
1728 /* not supported, and we don't have any bus/target/lun */
1729 /* which we present to the kernel. */
1731 case CDROM_SEND_PACKET
:
1732 case CDROMCLOSETRAY
:
1734 case SCSI_IOCTL_GET_IDLUN
:
1735 case SCSI_IOCTL_GET_BUS_NUMBER
:
1741 static void cciss_check_queues(ctlr_info_t
*h
)
1743 int start_queue
= h
->next_to_run
;
1746 /* check to see if we have maxed out the number of commands that can
1747 * be placed on the queue. If so then exit. We do this check here
1748 * in case the interrupt we serviced was from an ioctl and did not
1749 * free any new commands.
1751 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
)
1754 /* We have room on the queue for more commands. Now we need to queue
1755 * them up. We will also keep track of the next queue to run so
1756 * that every queue gets a chance to be started first.
1758 for (i
= 0; i
< h
->highest_lun
+ 1; i
++) {
1759 int curr_queue
= (start_queue
+ i
) % (h
->highest_lun
+ 1);
1760 /* make sure the disk has been added and the drive is real
1761 * because this can be called from the middle of init_one.
1763 if (!h
->drv
[curr_queue
])
1765 if (!(h
->drv
[curr_queue
]->queue
) ||
1766 !(h
->drv
[curr_queue
]->heads
))
1768 blk_start_queue(h
->gendisk
[curr_queue
]->queue
);
1770 /* check to see if we have maxed out the number of commands
1771 * that can be placed on the queue.
1773 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
) {
1774 if (curr_queue
== start_queue
) {
1776 (start_queue
+ 1) % (h
->highest_lun
+ 1);
1779 h
->next_to_run
= curr_queue
;
1786 static void cciss_softirq_done(struct request
*rq
)
1788 CommandList_struct
*c
= rq
->completion_data
;
1789 ctlr_info_t
*h
= hba
[c
->ctlr
];
1790 SGDescriptor_struct
*curr_sg
= c
->SG
;
1792 unsigned long flags
;
1796 if (c
->Request
.Type
.Direction
== XFER_READ
)
1797 ddir
= PCI_DMA_FROMDEVICE
;
1799 ddir
= PCI_DMA_TODEVICE
;
1801 /* command did not need to be retried */
1802 /* unmap the DMA mapping for all the scatter gather elements */
1803 for (i
= 0; i
< c
->Header
.SGList
; i
++) {
1804 if (curr_sg
[sg_index
].Ext
== CCISS_SG_CHAIN
) {
1805 cciss_unmap_sg_chain_block(h
, c
);
1806 /* Point to the next block */
1807 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
1810 temp64
.val32
.lower
= curr_sg
[sg_index
].Addr
.lower
;
1811 temp64
.val32
.upper
= curr_sg
[sg_index
].Addr
.upper
;
1812 pci_unmap_page(h
->pdev
, temp64
.val
, curr_sg
[sg_index
].Len
,
1818 printk("Done with %p\n", rq
);
1819 #endif /* CCISS_DEBUG */
1821 /* set the residual count for pc requests */
1822 if (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
1823 rq
->resid_len
= c
->err_info
->ResidualCnt
;
1825 blk_end_request_all(rq
, (rq
->errors
== 0) ? 0 : -EIO
);
1827 spin_lock_irqsave(&h
->lock
, flags
);
1829 cciss_check_queues(h
);
1830 spin_unlock_irqrestore(&h
->lock
, flags
);
1833 static inline void log_unit_to_scsi3addr(ctlr_info_t
*h
,
1834 unsigned char scsi3addr
[], uint32_t log_unit
)
1836 memcpy(scsi3addr
, h
->drv
[log_unit
]->LunID
,
1837 sizeof(h
->drv
[log_unit
]->LunID
));
1840 /* This function gets the SCSI vendor, model, and revision of a logical drive
1841 * via the inquiry page 0. Model, vendor, and rev are set to empty strings if
1842 * they cannot be read.
1844 static void cciss_get_device_descr(ctlr_info_t
*h
, int logvol
,
1845 char *vendor
, char *model
, char *rev
)
1848 InquiryData_struct
*inq_buf
;
1849 unsigned char scsi3addr
[8];
1855 inq_buf
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1859 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1860 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buf
, sizeof(*inq_buf
), 0,
1861 scsi3addr
, TYPE_CMD
);
1863 memcpy(vendor
, &inq_buf
->data_byte
[8], VENDOR_LEN
);
1864 vendor
[VENDOR_LEN
] = '\0';
1865 memcpy(model
, &inq_buf
->data_byte
[16], MODEL_LEN
);
1866 model
[MODEL_LEN
] = '\0';
1867 memcpy(rev
, &inq_buf
->data_byte
[32], REV_LEN
);
1868 rev
[REV_LEN
] = '\0';
1875 /* This function gets the serial number of a logical drive via
1876 * inquiry page 0x83. Serial no. is 16 bytes. If the serial
1877 * number cannot be had, for whatever reason, 16 bytes of 0xff
1878 * are returned instead.
1880 static void cciss_get_serial_no(ctlr_info_t
*h
, int logvol
,
1881 unsigned char *serial_no
, int buflen
)
1883 #define PAGE_83_INQ_BYTES 64
1886 unsigned char scsi3addr
[8];
1890 memset(serial_no
, 0xff, buflen
);
1891 buf
= kzalloc(PAGE_83_INQ_BYTES
, GFP_KERNEL
);
1894 memset(serial_no
, 0, buflen
);
1895 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1896 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, buf
,
1897 PAGE_83_INQ_BYTES
, 0x83, scsi3addr
, TYPE_CMD
);
1899 memcpy(serial_no
, &buf
[8], buflen
);
1905 * cciss_add_disk sets up the block device queue for a logical drive
1907 static int cciss_add_disk(ctlr_info_t
*h
, struct gendisk
*disk
,
1910 disk
->queue
= blk_init_queue(do_cciss_request
, &h
->lock
);
1912 goto init_queue_failure
;
1913 sprintf(disk
->disk_name
, "cciss/c%dd%d", h
->ctlr
, drv_index
);
1914 disk
->major
= h
->major
;
1915 disk
->first_minor
= drv_index
<< NWD_SHIFT
;
1916 disk
->fops
= &cciss_fops
;
1917 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
1919 disk
->private_data
= h
->drv
[drv_index
];
1920 disk
->driverfs_dev
= &h
->drv
[drv_index
]->dev
;
1922 /* Set up queue information */
1923 blk_queue_bounce_limit(disk
->queue
, h
->pdev
->dma_mask
);
1925 /* This is a hardware imposed limit. */
1926 blk_queue_max_segments(disk
->queue
, h
->maxsgentries
);
1928 blk_queue_max_hw_sectors(disk
->queue
, h
->cciss_max_sectors
);
1930 blk_queue_softirq_done(disk
->queue
, cciss_softirq_done
);
1932 disk
->queue
->queuedata
= h
;
1934 blk_queue_logical_block_size(disk
->queue
,
1935 h
->drv
[drv_index
]->block_size
);
1937 /* Make sure all queue data is written out before */
1938 /* setting h->drv[drv_index]->queue, as setting this */
1939 /* allows the interrupt handler to start the queue */
1941 h
->drv
[drv_index
]->queue
= disk
->queue
;
1946 blk_cleanup_queue(disk
->queue
);
1952 /* This function will check the usage_count of the drive to be updated/added.
1953 * If the usage_count is zero and it is a heretofore unknown drive, or,
1954 * the drive's capacity, geometry, or serial number has changed,
1955 * then the drive information will be updated and the disk will be
1956 * re-registered with the kernel. If these conditions don't hold,
1957 * then it will be left alone for the next reboot. The exception to this
1958 * is disk 0 which will always be left registered with the kernel since it
1959 * is also the controller node. Any changes to disk 0 will show up on
1962 static void cciss_update_drive_info(ctlr_info_t
*h
, int drv_index
,
1963 int first_time
, int via_ioctl
)
1965 struct gendisk
*disk
;
1966 InquiryData_struct
*inq_buff
= NULL
;
1967 unsigned int block_size
;
1968 sector_t total_size
;
1969 unsigned long flags
= 0;
1971 drive_info_struct
*drvinfo
;
1973 /* Get information about the disk and modify the driver structure */
1974 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1975 drvinfo
= kzalloc(sizeof(*drvinfo
), GFP_KERNEL
);
1976 if (inq_buff
== NULL
|| drvinfo
== NULL
)
1979 /* testing to see if 16-byte CDBs are already being used */
1980 if (h
->cciss_read
== CCISS_READ_16
) {
1981 cciss_read_capacity_16(h
, drv_index
,
1982 &total_size
, &block_size
);
1985 cciss_read_capacity(h
, drv_index
, &total_size
, &block_size
);
1986 /* if read_capacity returns all F's this volume is >2TB */
1987 /* in size so we switch to 16-byte CDB's for all */
1988 /* read/write ops */
1989 if (total_size
== 0xFFFFFFFFULL
) {
1990 cciss_read_capacity_16(h
, drv_index
,
1991 &total_size
, &block_size
);
1992 h
->cciss_read
= CCISS_READ_16
;
1993 h
->cciss_write
= CCISS_WRITE_16
;
1995 h
->cciss_read
= CCISS_READ_10
;
1996 h
->cciss_write
= CCISS_WRITE_10
;
2000 cciss_geometry_inquiry(h
, drv_index
, total_size
, block_size
,
2002 drvinfo
->block_size
= block_size
;
2003 drvinfo
->nr_blocks
= total_size
+ 1;
2005 cciss_get_device_descr(h
, drv_index
, drvinfo
->vendor
,
2006 drvinfo
->model
, drvinfo
->rev
);
2007 cciss_get_serial_no(h
, drv_index
, drvinfo
->serial_no
,
2008 sizeof(drvinfo
->serial_no
));
2009 /* Save the lunid in case we deregister the disk, below. */
2010 memcpy(drvinfo
->LunID
, h
->drv
[drv_index
]->LunID
,
2011 sizeof(drvinfo
->LunID
));
2013 /* Is it the same disk we already know, and nothing's changed? */
2014 if (h
->drv
[drv_index
]->raid_level
!= -1 &&
2015 ((memcmp(drvinfo
->serial_no
,
2016 h
->drv
[drv_index
]->serial_no
, 16) == 0) &&
2017 drvinfo
->block_size
== h
->drv
[drv_index
]->block_size
&&
2018 drvinfo
->nr_blocks
== h
->drv
[drv_index
]->nr_blocks
&&
2019 drvinfo
->heads
== h
->drv
[drv_index
]->heads
&&
2020 drvinfo
->sectors
== h
->drv
[drv_index
]->sectors
&&
2021 drvinfo
->cylinders
== h
->drv
[drv_index
]->cylinders
))
2022 /* The disk is unchanged, nothing to update */
2025 /* If we get here it's not the same disk, or something's changed,
2026 * so we need to * deregister it, and re-register it, if it's not
2028 * If the disk already exists then deregister it before proceeding
2029 * (unless it's the first disk (for the controller node).
2031 if (h
->drv
[drv_index
]->raid_level
!= -1 && drv_index
!= 0) {
2032 printk(KERN_WARNING
"disk %d has changed.\n", drv_index
);
2033 spin_lock_irqsave(&h
->lock
, flags
);
2034 h
->drv
[drv_index
]->busy_configuring
= 1;
2035 spin_unlock_irqrestore(&h
->lock
, flags
);
2037 /* deregister_disk sets h->drv[drv_index]->queue = NULL
2038 * which keeps the interrupt handler from starting
2041 ret
= deregister_disk(h
, drv_index
, 0, via_ioctl
);
2044 /* If the disk is in use return */
2048 /* Save the new information from cciss_geometry_inquiry
2049 * and serial number inquiry. If the disk was deregistered
2050 * above, then h->drv[drv_index] will be NULL.
2052 if (h
->drv
[drv_index
] == NULL
) {
2053 drvinfo
->device_initialized
= 0;
2054 h
->drv
[drv_index
] = drvinfo
;
2055 drvinfo
= NULL
; /* so it won't be freed below. */
2057 /* special case for cxd0 */
2058 h
->drv
[drv_index
]->block_size
= drvinfo
->block_size
;
2059 h
->drv
[drv_index
]->nr_blocks
= drvinfo
->nr_blocks
;
2060 h
->drv
[drv_index
]->heads
= drvinfo
->heads
;
2061 h
->drv
[drv_index
]->sectors
= drvinfo
->sectors
;
2062 h
->drv
[drv_index
]->cylinders
= drvinfo
->cylinders
;
2063 h
->drv
[drv_index
]->raid_level
= drvinfo
->raid_level
;
2064 memcpy(h
->drv
[drv_index
]->serial_no
, drvinfo
->serial_no
, 16);
2065 memcpy(h
->drv
[drv_index
]->vendor
, drvinfo
->vendor
,
2067 memcpy(h
->drv
[drv_index
]->model
, drvinfo
->model
, MODEL_LEN
+ 1);
2068 memcpy(h
->drv
[drv_index
]->rev
, drvinfo
->rev
, REV_LEN
+ 1);
2072 disk
= h
->gendisk
[drv_index
];
2073 set_capacity(disk
, h
->drv
[drv_index
]->nr_blocks
);
2075 /* If it's not disk 0 (drv_index != 0)
2076 * or if it was disk 0, but there was previously
2077 * no actual corresponding configured logical drive
2078 * (raid_leve == -1) then we want to update the
2079 * logical drive's information.
2081 if (drv_index
|| first_time
) {
2082 if (cciss_add_disk(h
, disk
, drv_index
) != 0) {
2083 cciss_free_gendisk(h
, drv_index
);
2084 cciss_free_drive_info(h
, drv_index
);
2085 printk(KERN_WARNING
"cciss:%d could not update "
2086 "disk %d\n", h
->ctlr
, drv_index
);
2096 printk(KERN_ERR
"cciss: out of memory\n");
2100 /* This function will find the first index of the controllers drive array
2101 * that has a null drv pointer and allocate the drive info struct and
2102 * will return that index This is where new drives will be added.
2103 * If the index to be returned is greater than the highest_lun index for
2104 * the controller then highest_lun is set * to this new index.
2105 * If there are no available indexes or if tha allocation fails, then -1
2106 * is returned. * "controller_node" is used to know if this is a real
2107 * logical drive, or just the controller node, which determines if this
2108 * counts towards highest_lun.
2110 static int cciss_alloc_drive_info(ctlr_info_t
*h
, int controller_node
)
2113 drive_info_struct
*drv
;
2115 /* Search for an empty slot for our drive info */
2116 for (i
= 0; i
< CISS_MAX_LUN
; i
++) {
2118 /* if not cxd0 case, and it's occupied, skip it. */
2119 if (h
->drv
[i
] && i
!= 0)
2122 * If it's cxd0 case, and drv is alloc'ed already, and a
2123 * disk is configured there, skip it.
2125 if (i
== 0 && h
->drv
[i
] && h
->drv
[i
]->raid_level
!= -1)
2129 * We've found an empty slot. Update highest_lun
2130 * provided this isn't just the fake cxd0 controller node.
2132 if (i
> h
->highest_lun
&& !controller_node
)
2135 /* If adding a real disk at cxd0, and it's already alloc'ed */
2136 if (i
== 0 && h
->drv
[i
] != NULL
)
2140 * Found an empty slot, not already alloc'ed. Allocate it.
2141 * Mark it with raid_level == -1, so we know it's new later on.
2143 drv
= kzalloc(sizeof(*drv
), GFP_KERNEL
);
2146 drv
->raid_level
= -1; /* so we know it's new */
2153 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
)
2155 kfree(h
->drv
[drv_index
]);
2156 h
->drv
[drv_index
] = NULL
;
2159 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
)
2161 put_disk(h
->gendisk
[drv_index
]);
2162 h
->gendisk
[drv_index
] = NULL
;
2165 /* cciss_add_gendisk finds a free hba[]->drv structure
2166 * and allocates a gendisk if needed, and sets the lunid
2167 * in the drvinfo structure. It returns the index into
2168 * the ->drv[] array, or -1 if none are free.
2169 * is_controller_node indicates whether highest_lun should
2170 * count this disk, or if it's only being added to provide
2171 * a means to talk to the controller in case no logical
2172 * drives have yet been configured.
2174 static int cciss_add_gendisk(ctlr_info_t
*h
, unsigned char lunid
[],
2175 int controller_node
)
2179 drv_index
= cciss_alloc_drive_info(h
, controller_node
);
2180 if (drv_index
== -1)
2183 /*Check if the gendisk needs to be allocated */
2184 if (!h
->gendisk
[drv_index
]) {
2185 h
->gendisk
[drv_index
] =
2186 alloc_disk(1 << NWD_SHIFT
);
2187 if (!h
->gendisk
[drv_index
]) {
2188 printk(KERN_ERR
"cciss%d: could not "
2189 "allocate a new disk %d\n",
2190 h
->ctlr
, drv_index
);
2191 goto err_free_drive_info
;
2194 memcpy(h
->drv
[drv_index
]->LunID
, lunid
,
2195 sizeof(h
->drv
[drv_index
]->LunID
));
2196 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
2198 /* Don't need to mark this busy because nobody */
2199 /* else knows about this disk yet to contend */
2200 /* for access to it. */
2201 h
->drv
[drv_index
]->busy_configuring
= 0;
2206 cciss_free_gendisk(h
, drv_index
);
2207 err_free_drive_info
:
2208 cciss_free_drive_info(h
, drv_index
);
2212 /* This is for the special case of a controller which
2213 * has no logical drives. In this case, we still need
2214 * to register a disk so the controller can be accessed
2215 * by the Array Config Utility.
2217 static void cciss_add_controller_node(ctlr_info_t
*h
)
2219 struct gendisk
*disk
;
2222 if (h
->gendisk
[0] != NULL
) /* already did this? Then bail. */
2225 drv_index
= cciss_add_gendisk(h
, CTLR_LUNID
, 1);
2226 if (drv_index
== -1)
2228 h
->drv
[drv_index
]->block_size
= 512;
2229 h
->drv
[drv_index
]->nr_blocks
= 0;
2230 h
->drv
[drv_index
]->heads
= 0;
2231 h
->drv
[drv_index
]->sectors
= 0;
2232 h
->drv
[drv_index
]->cylinders
= 0;
2233 h
->drv
[drv_index
]->raid_level
= -1;
2234 memset(h
->drv
[drv_index
]->serial_no
, 0, 16);
2235 disk
= h
->gendisk
[drv_index
];
2236 if (cciss_add_disk(h
, disk
, drv_index
) == 0)
2238 cciss_free_gendisk(h
, drv_index
);
2239 cciss_free_drive_info(h
, drv_index
);
2241 printk(KERN_WARNING
"cciss%d: could not "
2242 "add disk 0.\n", h
->ctlr
);
2246 /* This function will add and remove logical drives from the Logical
2247 * drive array of the controller and maintain persistency of ordering
2248 * so that mount points are preserved until the next reboot. This allows
2249 * for the removal of logical drives in the middle of the drive array
2250 * without a re-ordering of those drives.
2252 * h = The controller to perform the operations on
2254 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
,
2258 ReportLunData_struct
*ld_buff
= NULL
;
2264 unsigned char lunid
[8] = CTLR_LUNID
;
2265 unsigned long flags
;
2267 if (!capable(CAP_SYS_RAWIO
))
2270 /* Set busy_configuring flag for this operation */
2271 spin_lock_irqsave(&h
->lock
, flags
);
2272 if (h
->busy_configuring
) {
2273 spin_unlock_irqrestore(&h
->lock
, flags
);
2276 h
->busy_configuring
= 1;
2277 spin_unlock_irqrestore(&h
->lock
, flags
);
2279 ld_buff
= kzalloc(sizeof(ReportLunData_struct
), GFP_KERNEL
);
2280 if (ld_buff
== NULL
)
2283 return_code
= sendcmd_withirq(h
, CISS_REPORT_LOG
, ld_buff
,
2284 sizeof(ReportLunData_struct
),
2285 0, CTLR_LUNID
, TYPE_CMD
);
2287 if (return_code
== IO_OK
)
2288 listlength
= be32_to_cpu(*(__be32
*) ld_buff
->LUNListLength
);
2289 else { /* reading number of logical volumes failed */
2290 printk(KERN_WARNING
"cciss: report logical volume"
2291 " command failed\n");
2296 num_luns
= listlength
/ 8; /* 8 bytes per entry */
2297 if (num_luns
> CISS_MAX_LUN
) {
2298 num_luns
= CISS_MAX_LUN
;
2299 printk(KERN_WARNING
"cciss: more luns configured"
2300 " on controller than can be handled by"
2305 cciss_add_controller_node(h
);
2307 /* Compare controller drive array to driver's drive array
2308 * to see if any drives are missing on the controller due
2309 * to action of Array Config Utility (user deletes drive)
2310 * and deregister logical drives which have disappeared.
2312 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2316 /* skip holes in the array from already deleted drives */
2317 if (h
->drv
[i
] == NULL
)
2320 for (j
= 0; j
< num_luns
; j
++) {
2321 memcpy(lunid
, &ld_buff
->LUN
[j
][0], sizeof(lunid
));
2322 if (memcmp(h
->drv
[i
]->LunID
, lunid
,
2323 sizeof(lunid
)) == 0) {
2329 /* Deregister it from the OS, it's gone. */
2330 spin_lock_irqsave(&h
->lock
, flags
);
2331 h
->drv
[i
]->busy_configuring
= 1;
2332 spin_unlock_irqrestore(&h
->lock
, flags
);
2333 return_code
= deregister_disk(h
, i
, 1, via_ioctl
);
2334 if (h
->drv
[i
] != NULL
)
2335 h
->drv
[i
]->busy_configuring
= 0;
2339 /* Compare controller drive array to driver's drive array.
2340 * Check for updates in the drive information and any new drives
2341 * on the controller due to ACU adding logical drives, or changing
2342 * a logical drive's size, etc. Reregister any new/changed drives
2344 for (i
= 0; i
< num_luns
; i
++) {
2349 memcpy(lunid
, &ld_buff
->LUN
[i
][0], sizeof(lunid
));
2350 /* Find if the LUN is already in the drive array
2351 * of the driver. If so then update its info
2352 * if not in use. If it does not exist then find
2353 * the first free index and add it.
2355 for (j
= 0; j
<= h
->highest_lun
; j
++) {
2356 if (h
->drv
[j
] != NULL
&&
2357 memcmp(h
->drv
[j
]->LunID
, lunid
,
2358 sizeof(h
->drv
[j
]->LunID
)) == 0) {
2365 /* check if the drive was found already in the array */
2367 drv_index
= cciss_add_gendisk(h
, lunid
, 0);
2368 if (drv_index
== -1)
2371 cciss_update_drive_info(h
, drv_index
, first_time
, via_ioctl
);
2376 h
->busy_configuring
= 0;
2377 /* We return -1 here to tell the ACU that we have registered/updated
2378 * all of the drives that we can and to keep it from calling us
2383 printk(KERN_ERR
"cciss: out of memory\n");
2384 h
->busy_configuring
= 0;
2388 static void cciss_clear_drive_info(drive_info_struct
*drive_info
)
2390 /* zero out the disk size info */
2391 drive_info
->nr_blocks
= 0;
2392 drive_info
->block_size
= 0;
2393 drive_info
->heads
= 0;
2394 drive_info
->sectors
= 0;
2395 drive_info
->cylinders
= 0;
2396 drive_info
->raid_level
= -1;
2397 memset(drive_info
->serial_no
, 0, sizeof(drive_info
->serial_no
));
2398 memset(drive_info
->model
, 0, sizeof(drive_info
->model
));
2399 memset(drive_info
->rev
, 0, sizeof(drive_info
->rev
));
2400 memset(drive_info
->vendor
, 0, sizeof(drive_info
->vendor
));
2402 * don't clear the LUNID though, we need to remember which
2407 /* This function will deregister the disk and it's queue from the
2408 * kernel. It must be called with the controller lock held and the
2409 * drv structures busy_configuring flag set. It's parameters are:
2411 * disk = This is the disk to be deregistered
2412 * drv = This is the drive_info_struct associated with the disk to be
2413 * deregistered. It contains information about the disk used
2415 * clear_all = This flag determines whether or not the disk information
2416 * is going to be completely cleared out and the highest_lun
2417 * reset. Sometimes we want to clear out information about
2418 * the disk in preparation for re-adding it. In this case
2419 * the highest_lun should be left unchanged and the LunID
2420 * should not be cleared.
2422 * This indicates whether we've reached this path via ioctl.
2423 * This affects the maximum usage count allowed for c0d0 to be messed with.
2424 * If this path is reached via ioctl(), then the max_usage_count will
2425 * be 1, as the process calling ioctl() has got to have the device open.
2426 * If we get here via sysfs, then the max usage count will be zero.
2428 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
2429 int clear_all
, int via_ioctl
)
2432 struct gendisk
*disk
;
2433 drive_info_struct
*drv
;
2434 int recalculate_highest_lun
;
2436 if (!capable(CAP_SYS_RAWIO
))
2439 drv
= h
->drv
[drv_index
];
2440 disk
= h
->gendisk
[drv_index
];
2442 /* make sure logical volume is NOT is use */
2443 if (clear_all
|| (h
->gendisk
[0] == disk
)) {
2444 if (drv
->usage_count
> via_ioctl
)
2446 } else if (drv
->usage_count
> 0)
2449 recalculate_highest_lun
= (drv
== h
->drv
[h
->highest_lun
]);
2451 /* invalidate the devices and deregister the disk. If it is disk
2452 * zero do not deregister it but just zero out it's values. This
2453 * allows us to delete disk zero but keep the controller registered.
2455 if (h
->gendisk
[0] != disk
) {
2456 struct request_queue
*q
= disk
->queue
;
2457 if (disk
->flags
& GENHD_FL_UP
) {
2458 cciss_destroy_ld_sysfs_entry(h
, drv_index
, 0);
2462 blk_cleanup_queue(q
);
2463 /* If clear_all is set then we are deleting the logical
2464 * drive, not just refreshing its info. For drives
2465 * other than disk 0 we will call put_disk. We do not
2466 * do this for disk 0 as we need it to be able to
2467 * configure the controller.
2470 /* This isn't pretty, but we need to find the
2471 * disk in our array and NULL our the pointer.
2472 * This is so that we will call alloc_disk if
2473 * this index is used again later.
2475 for (i
=0; i
< CISS_MAX_LUN
; i
++){
2476 if (h
->gendisk
[i
] == disk
) {
2477 h
->gendisk
[i
] = NULL
;
2484 set_capacity(disk
, 0);
2485 cciss_clear_drive_info(drv
);
2490 /* if it was the last disk, find the new hightest lun */
2491 if (clear_all
&& recalculate_highest_lun
) {
2492 int newhighest
= -1;
2493 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2494 /* if the disk has size > 0, it is available */
2495 if (h
->drv
[i
] && h
->drv
[i
]->heads
)
2498 h
->highest_lun
= newhighest
;
2503 static int fill_cmd(ctlr_info_t
*h
, CommandList_struct
*c
, __u8 cmd
, void *buff
,
2504 size_t size
, __u8 page_code
, unsigned char *scsi3addr
,
2507 u64bit buff_dma_handle
;
2510 c
->cmd_type
= CMD_IOCTL_PEND
;
2511 c
->Header
.ReplyQueue
= 0;
2513 c
->Header
.SGList
= 1;
2514 c
->Header
.SGTotal
= 1;
2516 c
->Header
.SGList
= 0;
2517 c
->Header
.SGTotal
= 0;
2519 c
->Header
.Tag
.lower
= c
->busaddr
;
2520 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2522 c
->Request
.Type
.Type
= cmd_type
;
2523 if (cmd_type
== TYPE_CMD
) {
2526 /* are we trying to read a vital product page */
2527 if (page_code
!= 0) {
2528 c
->Request
.CDB
[1] = 0x01;
2529 c
->Request
.CDB
[2] = page_code
;
2531 c
->Request
.CDBLen
= 6;
2532 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2533 c
->Request
.Type
.Direction
= XFER_READ
;
2534 c
->Request
.Timeout
= 0;
2535 c
->Request
.CDB
[0] = CISS_INQUIRY
;
2536 c
->Request
.CDB
[4] = size
& 0xFF;
2538 case CISS_REPORT_LOG
:
2539 case CISS_REPORT_PHYS
:
2540 /* Talking to controller so It's a physical command
2541 mode = 00 target = 0. Nothing to write.
2543 c
->Request
.CDBLen
= 12;
2544 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2545 c
->Request
.Type
.Direction
= XFER_READ
;
2546 c
->Request
.Timeout
= 0;
2547 c
->Request
.CDB
[0] = cmd
;
2548 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2549 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2550 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2551 c
->Request
.CDB
[9] = size
& 0xFF;
2554 case CCISS_READ_CAPACITY
:
2555 c
->Request
.CDBLen
= 10;
2556 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2557 c
->Request
.Type
.Direction
= XFER_READ
;
2558 c
->Request
.Timeout
= 0;
2559 c
->Request
.CDB
[0] = cmd
;
2561 case CCISS_READ_CAPACITY_16
:
2562 c
->Request
.CDBLen
= 16;
2563 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2564 c
->Request
.Type
.Direction
= XFER_READ
;
2565 c
->Request
.Timeout
= 0;
2566 c
->Request
.CDB
[0] = cmd
;
2567 c
->Request
.CDB
[1] = 0x10;
2568 c
->Request
.CDB
[10] = (size
>> 24) & 0xFF;
2569 c
->Request
.CDB
[11] = (size
>> 16) & 0xFF;
2570 c
->Request
.CDB
[12] = (size
>> 8) & 0xFF;
2571 c
->Request
.CDB
[13] = size
& 0xFF;
2572 c
->Request
.Timeout
= 0;
2573 c
->Request
.CDB
[0] = cmd
;
2575 case CCISS_CACHE_FLUSH
:
2576 c
->Request
.CDBLen
= 12;
2577 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2578 c
->Request
.Type
.Direction
= XFER_WRITE
;
2579 c
->Request
.Timeout
= 0;
2580 c
->Request
.CDB
[0] = BMIC_WRITE
;
2581 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2583 case TEST_UNIT_READY
:
2584 c
->Request
.CDBLen
= 6;
2585 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2586 c
->Request
.Type
.Direction
= XFER_NONE
;
2587 c
->Request
.Timeout
= 0;
2591 "cciss%d: Unknown Command 0x%c\n",
2595 } else if (cmd_type
== TYPE_MSG
) {
2597 case 0: /* ABORT message */
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 1: /* RESET message */
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] = 0x03; /* reset a target */
2616 case 3: /* No-Op message */
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
;
2625 "cciss%d: unknown message type %d\n",
2631 "cciss%d: unknown command type %d\n", h
->ctlr
, cmd_type
);
2634 /* Fill in the scatter gather information */
2636 buff_dma_handle
.val
= (__u64
) pci_map_single(h
->pdev
,
2638 PCI_DMA_BIDIRECTIONAL
);
2639 c
->SG
[0].Addr
.lower
= buff_dma_handle
.val32
.lower
;
2640 c
->SG
[0].Addr
.upper
= buff_dma_handle
.val32
.upper
;
2641 c
->SG
[0].Len
= size
;
2642 c
->SG
[0].Ext
= 0; /* we are not chaining */
2647 static int check_target_status(ctlr_info_t
*h
, CommandList_struct
*c
)
2649 switch (c
->err_info
->ScsiStatus
) {
2652 case SAM_STAT_CHECK_CONDITION
:
2653 switch (0xf & c
->err_info
->SenseInfo
[2]) {
2654 case 0: return IO_OK
; /* no sense */
2655 case 1: return IO_OK
; /* recovered error */
2657 if (check_for_unit_attention(h
, c
))
2658 return IO_NEEDS_RETRY
;
2659 printk(KERN_WARNING
"cciss%d: cmd 0x%02x "
2660 "check condition, sense key = 0x%02x\n",
2661 h
->ctlr
, c
->Request
.CDB
[0],
2662 c
->err_info
->SenseInfo
[2]);
2666 printk(KERN_WARNING
"cciss%d: cmd 0x%02x"
2667 "scsi status = 0x%02x\n", h
->ctlr
,
2668 c
->Request
.CDB
[0], c
->err_info
->ScsiStatus
);
2674 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
)
2676 int return_status
= IO_OK
;
2678 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2681 switch (c
->err_info
->CommandStatus
) {
2682 case CMD_TARGET_STATUS
:
2683 return_status
= check_target_status(h
, c
);
2685 case CMD_DATA_UNDERRUN
:
2686 case CMD_DATA_OVERRUN
:
2687 /* expected for inquiry and report lun commands */
2690 printk(KERN_WARNING
"cciss: cmd 0x%02x is "
2691 "reported invalid\n", c
->Request
.CDB
[0]);
2692 return_status
= IO_ERROR
;
2694 case CMD_PROTOCOL_ERR
:
2695 printk(KERN_WARNING
"cciss: cmd 0x%02x has "
2696 "protocol error \n", c
->Request
.CDB
[0]);
2697 return_status
= IO_ERROR
;
2699 case CMD_HARDWARE_ERR
:
2700 printk(KERN_WARNING
"cciss: cmd 0x%02x had "
2701 " hardware error\n", c
->Request
.CDB
[0]);
2702 return_status
= IO_ERROR
;
2704 case CMD_CONNECTION_LOST
:
2705 printk(KERN_WARNING
"cciss: cmd 0x%02x had "
2706 "connection lost\n", c
->Request
.CDB
[0]);
2707 return_status
= IO_ERROR
;
2710 printk(KERN_WARNING
"cciss: cmd 0x%02x was "
2711 "aborted\n", c
->Request
.CDB
[0]);
2712 return_status
= IO_ERROR
;
2714 case CMD_ABORT_FAILED
:
2715 printk(KERN_WARNING
"cciss: cmd 0x%02x reports "
2716 "abort failed\n", c
->Request
.CDB
[0]);
2717 return_status
= IO_ERROR
;
2719 case CMD_UNSOLICITED_ABORT
:
2721 "cciss%d: unsolicited abort 0x%02x\n", h
->ctlr
,
2723 return_status
= IO_NEEDS_RETRY
;
2726 printk(KERN_WARNING
"cciss: 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 printk(KERN_WARNING
"cciss%d: retrying 0x%02x\n", h
->ctlr
,
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) {
2809 "cciss: 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 printk(KERN_WARNING
"cciss: 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 printk(KERN_WARNING
"cciss: 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 printk(KERN_WARNING
"cciss: 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 printk(KERN_WARNING
"cciss: 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 printk(KERN_WARNING
"cciss: read capacity failed\n");
2888 *block_size
= BLOCK_SIZE
;
2890 printk(KERN_INFO
" 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
< CISS_MAX_LUN
; logvol
++) {
2906 if (memcmp(h
->drv
[logvol
]->LunID
, drv
->LunID
,
2907 sizeof(drv
->LunID
)) == 0) {
2916 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
2917 if (inq_buff
== NULL
) {
2918 printk(KERN_WARNING
"cciss: out of memory\n");
2921 if (h
->cciss_read
== CCISS_READ_10
) {
2922 cciss_read_capacity(h
, logvol
,
2923 &total_size
, &block_size
);
2925 cciss_read_capacity_16(h
, logvol
,
2926 &total_size
, &block_size
);
2928 cciss_geometry_inquiry(h
, logvol
, total_size
, block_size
,
2931 blk_queue_logical_block_size(drv
->queue
, drv
->block_size
);
2932 set_capacity(disk
, drv
->nr_blocks
);
2939 * Map (physical) PCI mem into (virtual) kernel space
2941 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
2943 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
2944 ulong page_offs
= ((ulong
) base
) - page_base
;
2945 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
2947 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
2951 * Takes jobs of the Q and sends them to the hardware, then puts it on
2952 * the Q to wait for completion.
2954 static void start_io(ctlr_info_t
*h
)
2956 CommandList_struct
*c
;
2958 while (!hlist_empty(&h
->reqQ
)) {
2959 c
= hlist_entry(h
->reqQ
.first
, CommandList_struct
, list
);
2960 /* can't do anything if fifo is full */
2961 if ((h
->access
.fifo_full(h
))) {
2962 printk(KERN_WARNING
"cciss: fifo full\n");
2966 /* Get the first entry from the Request Q */
2970 /* Tell the controller execute command */
2971 h
->access
.submit_command(h
, c
);
2973 /* Put job onto the completed Q */
2978 /* Assumes that h->lock is held. */
2979 /* Zeros out the error record and then resends the command back */
2980 /* to the controller */
2981 static inline void resend_cciss_cmd(ctlr_info_t
*h
, CommandList_struct
*c
)
2983 /* erase the old error information */
2984 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
2986 /* add it to software queue and then send it to the controller */
2989 if (h
->Qdepth
> h
->maxQsinceinit
)
2990 h
->maxQsinceinit
= h
->Qdepth
;
2995 static inline unsigned int make_status_bytes(unsigned int scsi_status_byte
,
2996 unsigned int msg_byte
, unsigned int host_byte
,
2997 unsigned int driver_byte
)
2999 /* inverse of macros in scsi.h */
3000 return (scsi_status_byte
& 0xff) |
3001 ((msg_byte
& 0xff) << 8) |
3002 ((host_byte
& 0xff) << 16) |
3003 ((driver_byte
& 0xff) << 24);
3006 static inline int evaluate_target_status(ctlr_info_t
*h
,
3007 CommandList_struct
*cmd
, int *retry_cmd
)
3009 unsigned char sense_key
;
3010 unsigned char status_byte
, msg_byte
, host_byte
, driver_byte
;
3014 /* If we get in here, it means we got "target status", that is, scsi status */
3015 status_byte
= cmd
->err_info
->ScsiStatus
;
3016 driver_byte
= DRIVER_OK
;
3017 msg_byte
= cmd
->err_info
->CommandStatus
; /* correct? seems too device specific */
3019 if (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
3020 host_byte
= DID_PASSTHROUGH
;
3024 error_value
= make_status_bytes(status_byte
, msg_byte
,
3025 host_byte
, driver_byte
);
3027 if (cmd
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
) {
3028 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
)
3029 printk(KERN_WARNING
"cciss: cmd %p "
3030 "has SCSI Status 0x%x\n",
3031 cmd
, cmd
->err_info
->ScsiStatus
);
3035 /* check the sense key */
3036 sense_key
= 0xf & cmd
->err_info
->SenseInfo
[2];
3037 /* no status or recovered error */
3038 if (((sense_key
== 0x0) || (sense_key
== 0x1)) &&
3039 (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
))
3042 if (check_for_unit_attention(h
, cmd
)) {
3043 *retry_cmd
= !(cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
);
3047 /* Not SG_IO or similar? */
3048 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
) {
3049 if (error_value
!= 0)
3050 printk(KERN_WARNING
"cciss: cmd %p has CHECK CONDITION"
3051 " sense key = 0x%x\n", cmd
, sense_key
);
3055 /* SG_IO or similar, copy sense data back */
3056 if (cmd
->rq
->sense
) {
3057 if (cmd
->rq
->sense_len
> cmd
->err_info
->SenseLen
)
3058 cmd
->rq
->sense_len
= cmd
->err_info
->SenseLen
;
3059 memcpy(cmd
->rq
->sense
, cmd
->err_info
->SenseInfo
,
3060 cmd
->rq
->sense_len
);
3062 cmd
->rq
->sense_len
= 0;
3067 /* checks the status of the job and calls complete buffers to mark all
3068 * buffers for the completed job. Note that this function does not need
3069 * to hold the hba/queue lock.
3071 static inline void complete_command(ctlr_info_t
*h
, CommandList_struct
*cmd
,
3075 struct request
*rq
= cmd
->rq
;
3080 rq
->errors
= make_status_bytes(0, 0, 0, DRIVER_TIMEOUT
);
3082 if (cmd
->err_info
->CommandStatus
== 0) /* no error has occurred */
3083 goto after_error_processing
;
3085 switch (cmd
->err_info
->CommandStatus
) {
3086 case CMD_TARGET_STATUS
:
3087 rq
->errors
= evaluate_target_status(h
, cmd
, &retry_cmd
);
3089 case CMD_DATA_UNDERRUN
:
3090 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
) {
3091 printk(KERN_WARNING
"cciss: cmd %p has"
3092 " completed with data underrun "
3094 cmd
->rq
->resid_len
= cmd
->err_info
->ResidualCnt
;
3097 case CMD_DATA_OVERRUN
:
3098 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
)
3099 printk(KERN_WARNING
"cciss: cmd %p has"
3100 " completed with data overrun "
3104 printk(KERN_WARNING
"cciss: cmd %p is "
3105 "reported invalid\n", cmd
);
3106 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3107 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3108 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3109 DID_PASSTHROUGH
: DID_ERROR
);
3111 case CMD_PROTOCOL_ERR
:
3112 printk(KERN_WARNING
"cciss: cmd %p has "
3113 "protocol error \n", cmd
);
3114 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3115 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3116 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3117 DID_PASSTHROUGH
: DID_ERROR
);
3119 case CMD_HARDWARE_ERR
:
3120 printk(KERN_WARNING
"cciss: cmd %p had "
3121 " hardware error\n", cmd
);
3122 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3123 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3124 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3125 DID_PASSTHROUGH
: DID_ERROR
);
3127 case CMD_CONNECTION_LOST
:
3128 printk(KERN_WARNING
"cciss: cmd %p had "
3129 "connection lost\n", cmd
);
3130 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3131 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3132 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3133 DID_PASSTHROUGH
: DID_ERROR
);
3136 printk(KERN_WARNING
"cciss: cmd %p was "
3138 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3139 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3140 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3141 DID_PASSTHROUGH
: DID_ABORT
);
3143 case CMD_ABORT_FAILED
:
3144 printk(KERN_WARNING
"cciss: cmd %p reports "
3145 "abort failed\n", cmd
);
3146 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3147 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3148 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3149 DID_PASSTHROUGH
: DID_ERROR
);
3151 case CMD_UNSOLICITED_ABORT
:
3152 printk(KERN_WARNING
"cciss%d: unsolicited "
3153 "abort %p\n", h
->ctlr
, cmd
);
3154 if (cmd
->retry_count
< MAX_CMD_RETRIES
) {
3157 "cciss%d: retrying %p\n", h
->ctlr
, cmd
);
3161 "cciss%d: %p retried too "
3162 "many times\n", h
->ctlr
, 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 printk(KERN_WARNING
"cciss: 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
);
3176 printk(KERN_WARNING
"cciss: cmd %p returned "
3177 "unknown status %x\n", cmd
,
3178 cmd
->err_info
->CommandStatus
);
3179 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3180 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3181 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3182 DID_PASSTHROUGH
: DID_ERROR
);
3185 after_error_processing
:
3187 /* We need to return this command */
3189 resend_cciss_cmd(h
, cmd
);
3192 cmd
->rq
->completion_data
= cmd
;
3193 blk_complete_request(cmd
->rq
);
3196 static inline u32
cciss_tag_contains_index(u32 tag
)
3198 #define DIRECT_LOOKUP_BIT 0x10
3199 return tag
& DIRECT_LOOKUP_BIT
;
3202 static inline u32
cciss_tag_to_index(u32 tag
)
3204 #define DIRECT_LOOKUP_SHIFT 5
3205 return tag
>> DIRECT_LOOKUP_SHIFT
;
3208 static inline u32
cciss_tag_discard_error_bits(u32 tag
)
3210 #define CCISS_ERROR_BITS 0x03
3211 return tag
& ~CCISS_ERROR_BITS
;
3214 static inline void cciss_mark_tag_indexed(u32
*tag
)
3216 *tag
|= DIRECT_LOOKUP_BIT
;
3219 static inline void cciss_set_tag_index(u32
*tag
, u32 index
)
3221 *tag
|= (index
<< DIRECT_LOOKUP_SHIFT
);
3225 * Get a request and submit it to the controller.
3227 static void do_cciss_request(struct request_queue
*q
)
3229 ctlr_info_t
*h
= q
->queuedata
;
3230 CommandList_struct
*c
;
3233 struct request
*creq
;
3235 struct scatterlist
*tmp_sg
;
3236 SGDescriptor_struct
*curr_sg
;
3237 drive_info_struct
*drv
;
3242 /* We call start_io here in case there is a command waiting on the
3243 * queue that has not been sent.
3245 if (blk_queue_plugged(q
))
3249 creq
= blk_peek_request(q
);
3253 BUG_ON(creq
->nr_phys_segments
> h
->maxsgentries
);
3259 blk_start_request(creq
);
3261 tmp_sg
= h
->scatter_list
[c
->cmdindex
];
3262 spin_unlock_irq(q
->queue_lock
);
3264 c
->cmd_type
= CMD_RWREQ
;
3267 /* fill in the request */
3268 drv
= creq
->rq_disk
->private_data
;
3269 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
3270 /* got command from pool, so use the command block index instead */
3271 /* for direct lookups. */
3272 /* The first 2 bits are reserved for controller error reporting. */
3273 cciss_set_tag_index(&c
->Header
.Tag
.lower
, c
->cmdindex
);
3274 cciss_mark_tag_indexed(&c
->Header
.Tag
.lower
);
3275 memcpy(&c
->Header
.LUN
, drv
->LunID
, sizeof(drv
->LunID
));
3276 c
->Request
.CDBLen
= 10; /* 12 byte commands not in FW yet; */
3277 c
->Request
.Type
.Type
= TYPE_CMD
; /* It is a command. */
3278 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3279 c
->Request
.Type
.Direction
=
3280 (rq_data_dir(creq
) == READ
) ? XFER_READ
: XFER_WRITE
;
3281 c
->Request
.Timeout
= 0; /* Don't time out */
3283 (rq_data_dir(creq
) == READ
) ? h
->cciss_read
: h
->cciss_write
;
3284 start_blk
= blk_rq_pos(creq
);
3286 printk(KERN_DEBUG
"ciss: sector =%d nr_sectors=%d\n",
3287 (int)blk_rq_pos(creq
), (int)blk_rq_sectors(creq
));
3288 #endif /* CCISS_DEBUG */
3290 sg_init_table(tmp_sg
, h
->maxsgentries
);
3291 seg
= blk_rq_map_sg(q
, creq
, tmp_sg
);
3293 /* get the DMA records for the setup */
3294 if (c
->Request
.Type
.Direction
== XFER_READ
)
3295 dir
= PCI_DMA_FROMDEVICE
;
3297 dir
= PCI_DMA_TODEVICE
;
3303 for (i
= 0; i
< seg
; i
++) {
3304 if (((sg_index
+1) == (h
->max_cmd_sgentries
)) &&
3305 !chained
&& ((seg
- i
) > 1)) {
3306 /* Point to next chain block. */
3307 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
3311 curr_sg
[sg_index
].Len
= tmp_sg
[i
].length
;
3312 temp64
.val
= (__u64
) pci_map_page(h
->pdev
, sg_page(&tmp_sg
[i
]),
3314 tmp_sg
[i
].length
, dir
);
3315 curr_sg
[sg_index
].Addr
.lower
= temp64
.val32
.lower
;
3316 curr_sg
[sg_index
].Addr
.upper
= temp64
.val32
.upper
;
3317 curr_sg
[sg_index
].Ext
= 0; /* we are not chaining */
3321 cciss_map_sg_chain_block(h
, c
, h
->cmd_sg_list
[c
->cmdindex
],
3322 (seg
- (h
->max_cmd_sgentries
- 1)) *
3323 sizeof(SGDescriptor_struct
));
3325 /* track how many SG entries we are using */
3330 printk(KERN_DEBUG
"cciss: Submitting %ld sectors in %d segments "
3332 blk_rq_sectors(creq
), seg
, chained
);
3333 #endif /* CCISS_DEBUG */
3335 c
->Header
.SGTotal
= seg
+ chained
;
3336 if (seg
<= h
->max_cmd_sgentries
)
3337 c
->Header
.SGList
= c
->Header
.SGTotal
;
3339 c
->Header
.SGList
= h
->max_cmd_sgentries
;
3340 set_performant_mode(h
, c
);
3342 if (likely(creq
->cmd_type
== REQ_TYPE_FS
)) {
3343 if(h
->cciss_read
== CCISS_READ_10
) {
3344 c
->Request
.CDB
[1] = 0;
3345 c
->Request
.CDB
[2] = (start_blk
>> 24) & 0xff; /* MSB */
3346 c
->Request
.CDB
[3] = (start_blk
>> 16) & 0xff;
3347 c
->Request
.CDB
[4] = (start_blk
>> 8) & 0xff;
3348 c
->Request
.CDB
[5] = start_blk
& 0xff;
3349 c
->Request
.CDB
[6] = 0; /* (sect >> 24) & 0xff; MSB */
3350 c
->Request
.CDB
[7] = (blk_rq_sectors(creq
) >> 8) & 0xff;
3351 c
->Request
.CDB
[8] = blk_rq_sectors(creq
) & 0xff;
3352 c
->Request
.CDB
[9] = c
->Request
.CDB
[11] = c
->Request
.CDB
[12] = 0;
3354 u32 upper32
= upper_32_bits(start_blk
);
3356 c
->Request
.CDBLen
= 16;
3357 c
->Request
.CDB
[1]= 0;
3358 c
->Request
.CDB
[2]= (upper32
>> 24) & 0xff; /* MSB */
3359 c
->Request
.CDB
[3]= (upper32
>> 16) & 0xff;
3360 c
->Request
.CDB
[4]= (upper32
>> 8) & 0xff;
3361 c
->Request
.CDB
[5]= upper32
& 0xff;
3362 c
->Request
.CDB
[6]= (start_blk
>> 24) & 0xff;
3363 c
->Request
.CDB
[7]= (start_blk
>> 16) & 0xff;
3364 c
->Request
.CDB
[8]= (start_blk
>> 8) & 0xff;
3365 c
->Request
.CDB
[9]= start_blk
& 0xff;
3366 c
->Request
.CDB
[10]= (blk_rq_sectors(creq
) >> 24) & 0xff;
3367 c
->Request
.CDB
[11]= (blk_rq_sectors(creq
) >> 16) & 0xff;
3368 c
->Request
.CDB
[12]= (blk_rq_sectors(creq
) >> 8) & 0xff;
3369 c
->Request
.CDB
[13]= blk_rq_sectors(creq
) & 0xff;
3370 c
->Request
.CDB
[14] = c
->Request
.CDB
[15] = 0;
3372 } else if (creq
->cmd_type
== REQ_TYPE_BLOCK_PC
) {
3373 c
->Request
.CDBLen
= creq
->cmd_len
;
3374 memcpy(c
->Request
.CDB
, creq
->cmd
, BLK_MAX_CDB
);
3376 printk(KERN_WARNING
"cciss%d: bad request type %d\n", h
->ctlr
, creq
->cmd_type
);
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
->msi_vector
|| h
->msix_vector
) &&
3410 ((h
->access
.intr_pending(h
) == 0) ||
3411 (h
->interrupts_enabled
== 0));
3414 static inline int bad_tag(ctlr_info_t
*h
, u32 tag_index
,
3417 if (unlikely(tag_index
>= h
->nr_cmds
)) {
3418 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
3424 static inline void finish_cmd(ctlr_info_t
*h
, CommandList_struct
*c
,
3428 if (likely(c
->cmd_type
== CMD_RWREQ
))
3429 complete_command(h
, c
, 0);
3430 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3431 complete(c
->waiting
);
3432 #ifdef CONFIG_CISS_SCSI_TAPE
3433 else if (c
->cmd_type
== CMD_SCSI
)
3434 complete_scsi_command(c
, 0, raw_tag
);
3438 static inline u32
next_command(ctlr_info_t
*h
)
3442 if (unlikely(h
->transMethod
!= CFGTBL_Trans_Performant
))
3443 return h
->access
.command_completed(h
);
3445 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
3446 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
3447 (h
->reply_pool_head
)++;
3448 h
->commands_outstanding
--;
3452 /* Check for wraparound */
3453 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
3454 h
->reply_pool_head
= h
->reply_pool
;
3455 h
->reply_pool_wraparound
^= 1;
3460 /* process completion of an indexed ("direct lookup") command */
3461 static inline u32
process_indexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3464 CommandList_struct
*c
;
3466 tag_index
= cciss_tag_to_index(raw_tag
);
3467 if (bad_tag(h
, tag_index
, raw_tag
))
3468 return next_command(h
);
3469 c
= h
->cmd_pool
+ tag_index
;
3470 finish_cmd(h
, c
, raw_tag
);
3471 return next_command(h
);
3474 /* process completion of a non-indexed command */
3475 static inline u32
process_nonindexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3478 CommandList_struct
*c
= NULL
;
3479 struct hlist_node
*tmp
;
3480 __u32 busaddr_masked
, tag_masked
;
3482 tag
= cciss_tag_discard_error_bits(raw_tag
);
3483 hlist_for_each_entry(c
, tmp
, &h
->cmpQ
, list
) {
3484 busaddr_masked
= cciss_tag_discard_error_bits(c
->busaddr
);
3485 tag_masked
= cciss_tag_discard_error_bits(tag
);
3486 if (busaddr_masked
== tag_masked
) {
3487 finish_cmd(h
, c
, raw_tag
);
3488 return next_command(h
);
3491 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3492 return next_command(h
);
3495 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
)
3497 ctlr_info_t
*h
= dev_id
;
3498 unsigned long flags
;
3501 if (interrupt_not_for_us(h
))
3504 * If there are completed commands in the completion queue,
3505 * we had better do something about it.
3507 spin_lock_irqsave(&h
->lock
, flags
);
3508 while (interrupt_pending(h
)) {
3509 raw_tag
= get_next_completion(h
);
3510 while (raw_tag
!= FIFO_EMPTY
) {
3511 if (cciss_tag_contains_index(raw_tag
))
3512 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3514 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3518 spin_unlock_irqrestore(&h
->lock
, flags
);
3522 /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never
3523 * check the interrupt pending register because it is not set.
3525 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
)
3527 ctlr_info_t
*h
= dev_id
;
3528 unsigned long flags
;
3531 if (interrupt_not_for_us(h
))
3534 * If there are completed commands in the completion queue,
3535 * we had better do something about it.
3537 spin_lock_irqsave(&h
->lock
, flags
);
3538 raw_tag
= get_next_completion(h
);
3539 while (raw_tag
!= FIFO_EMPTY
) {
3540 if (cciss_tag_contains_index(raw_tag
))
3541 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3543 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3546 spin_unlock_irqrestore(&h
->lock
, flags
);
3551 * add_to_scan_list() - add controller to rescan queue
3552 * @h: Pointer to the controller.
3554 * Adds the controller to the rescan queue if not already on the queue.
3556 * returns 1 if added to the queue, 0 if skipped (could be on the
3557 * queue already, or the controller could be initializing or shutting
3560 static int add_to_scan_list(struct ctlr_info
*h
)
3562 struct ctlr_info
*test_h
;
3566 if (h
->busy_initializing
)
3569 if (!mutex_trylock(&h
->busy_shutting_down
))
3572 mutex_lock(&scan_mutex
);
3573 list_for_each_entry(test_h
, &scan_q
, scan_list
) {
3579 if (!found
&& !h
->busy_scanning
) {
3580 INIT_COMPLETION(h
->scan_wait
);
3581 list_add_tail(&h
->scan_list
, &scan_q
);
3584 mutex_unlock(&scan_mutex
);
3585 mutex_unlock(&h
->busy_shutting_down
);
3591 * remove_from_scan_list() - remove controller from rescan queue
3592 * @h: Pointer to the controller.
3594 * Removes the controller from the rescan queue if present. Blocks if
3595 * the controller is currently conducting a rescan. The controller
3596 * can be in one of three states:
3597 * 1. Doesn't need a scan
3598 * 2. On the scan list, but not scanning yet (we remove it)
3599 * 3. Busy scanning (and not on the list). In this case we want to wait for
3600 * the scan to complete to make sure the scanning thread for this
3601 * controller is completely idle.
3603 static void remove_from_scan_list(struct ctlr_info
*h
)
3605 struct ctlr_info
*test_h
, *tmp_h
;
3607 mutex_lock(&scan_mutex
);
3608 list_for_each_entry_safe(test_h
, tmp_h
, &scan_q
, scan_list
) {
3609 if (test_h
== h
) { /* state 2. */
3610 list_del(&h
->scan_list
);
3611 complete_all(&h
->scan_wait
);
3612 mutex_unlock(&scan_mutex
);
3616 if (h
->busy_scanning
) { /* state 3. */
3617 mutex_unlock(&scan_mutex
);
3618 wait_for_completion(&h
->scan_wait
);
3619 } else { /* state 1, nothing to do. */
3620 mutex_unlock(&scan_mutex
);
3625 * scan_thread() - kernel thread used to rescan controllers
3628 * A kernel thread used scan for drive topology changes on
3629 * controllers. The thread processes only one controller at a time
3630 * using a queue. Controllers are added to the queue using
3631 * add_to_scan_list() and removed from the queue either after done
3632 * processing or using remove_from_scan_list().
3636 static int scan_thread(void *data
)
3638 struct ctlr_info
*h
;
3641 set_current_state(TASK_INTERRUPTIBLE
);
3643 if (kthread_should_stop())
3647 mutex_lock(&scan_mutex
);
3648 if (list_empty(&scan_q
)) {
3649 mutex_unlock(&scan_mutex
);
3653 h
= list_entry(scan_q
.next
,
3656 list_del(&h
->scan_list
);
3657 h
->busy_scanning
= 1;
3658 mutex_unlock(&scan_mutex
);
3660 rebuild_lun_table(h
, 0, 0);
3661 complete_all(&h
->scan_wait
);
3662 mutex_lock(&scan_mutex
);
3663 h
->busy_scanning
= 0;
3664 mutex_unlock(&scan_mutex
);
3671 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
3673 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
3676 switch (c
->err_info
->SenseInfo
[12]) {
3678 printk(KERN_WARNING
"cciss%d: a state change "
3679 "detected, command retried\n", h
->ctlr
);
3683 printk(KERN_WARNING
"cciss%d: LUN failure "
3684 "detected, action required\n", h
->ctlr
);
3687 case REPORT_LUNS_CHANGED
:
3688 printk(KERN_WARNING
"cciss%d: report LUN data "
3689 "changed\n", h
->ctlr
);
3691 * Here, we could call add_to_scan_list and wake up the scan thread,
3692 * except that it's quite likely that we will get more than one
3693 * REPORT_LUNS_CHANGED condition in quick succession, which means
3694 * that those which occur after the first one will likely happen
3695 * *during* the scan_thread's rescan. And the rescan code is not
3696 * robust enough to restart in the middle, undoing what it has already
3697 * done, and it's not clear that it's even possible to do this, since
3698 * part of what it does is notify the block layer, which starts
3699 * doing it's own i/o to read partition tables and so on, and the
3700 * driver doesn't have visibility to know what might need undoing.
3701 * In any event, if possible, it is horribly complicated to get right
3702 * so we just don't do it for now.
3704 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
3708 case POWER_OR_RESET
:
3709 printk(KERN_WARNING
"cciss%d: a power on "
3710 "or device reset detected\n", h
->ctlr
);
3713 case UNIT_ATTENTION_CLEARED
:
3714 printk(KERN_WARNING
"cciss%d: unit attention "
3715 "cleared by another initiator\n", h
->ctlr
);
3719 printk(KERN_WARNING
"cciss%d: unknown "
3720 "unit attention detected\n", h
->ctlr
);
3726 * We cannot read the structure directly, for portability we must use
3728 * This is for debug only.
3730 static void print_cfg_table(CfgTable_struct
*tb
)
3736 printk("Controller Configuration information\n");
3737 printk("------------------------------------\n");
3738 for (i
= 0; i
< 4; i
++)
3739 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3740 temp_name
[4] = '\0';
3741 printk(" Signature = %s\n", temp_name
);
3742 printk(" Spec Number = %d\n", readl(&(tb
->SpecValence
)));
3743 printk(" Transport methods supported = 0x%x\n",
3744 readl(&(tb
->TransportSupport
)));
3745 printk(" Transport methods active = 0x%x\n",
3746 readl(&(tb
->TransportActive
)));
3747 printk(" Requested transport Method = 0x%x\n",
3748 readl(&(tb
->HostWrite
.TransportRequest
)));
3749 printk(" Coalesce Interrupt Delay = 0x%x\n",
3750 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3751 printk(" Coalesce Interrupt Count = 0x%x\n",
3752 readl(&(tb
->HostWrite
.CoalIntCount
)));
3753 printk(" Max outstanding commands = 0x%d\n",
3754 readl(&(tb
->CmdsOutMax
)));
3755 printk(" Bus Types = 0x%x\n", readl(&(tb
->BusTypes
)));
3756 for (i
= 0; i
< 16; i
++)
3757 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3758 temp_name
[16] = '\0';
3759 printk(" Server Name = %s\n", temp_name
);
3760 printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb
->HeartBeat
)));
3761 #endif /* CCISS_DEBUG */
3764 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3766 int i
, offset
, mem_type
, bar_type
;
3767 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3770 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3771 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3772 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3775 mem_type
= pci_resource_flags(pdev
, i
) &
3776 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3778 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3779 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3780 offset
+= 4; /* 32 bit */
3782 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3785 default: /* reserved in PCI 2.2 */
3787 "Base address is invalid\n");
3792 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3798 /* Fill in bucket_map[], given nsgs (the max number of
3799 * scatter gather elements supported) and bucket[],
3800 * which is an array of 8 integers. The bucket[] array
3801 * contains 8 different DMA transfer sizes (in 16
3802 * byte increments) which the controller uses to fetch
3803 * commands. This function fills in bucket_map[], which
3804 * maps a given number of scatter gather elements to one of
3805 * the 8 DMA transfer sizes. The point of it is to allow the
3806 * controller to only do as much DMA as needed to fetch the
3807 * command, with the DMA transfer size encoded in the lower
3808 * bits of the command address.
3810 static void calc_bucket_map(int bucket
[], int num_buckets
,
3811 int nsgs
, int *bucket_map
)
3815 /* even a command with 0 SGs requires 4 blocks */
3816 #define MINIMUM_TRANSFER_BLOCKS 4
3817 #define NUM_BUCKETS 8
3818 /* Note, bucket_map must have nsgs+1 entries. */
3819 for (i
= 0; i
<= nsgs
; i
++) {
3820 /* Compute size of a command with i SG entries */
3821 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
3822 b
= num_buckets
; /* Assume the biggest bucket */
3823 /* Find the bucket that is just big enough */
3824 for (j
= 0; j
< 8; j
++) {
3825 if (bucket
[j
] >= size
) {
3830 /* for a command with i SG entries, use bucket b. */
3835 static void __devinit
cciss_wait_for_mode_change_ack(ctlr_info_t
*h
)
3839 /* under certain very rare conditions, this can take awhile.
3840 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3841 * as we enter this code.) */
3842 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3843 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
3849 static __devinit
void cciss_enter_performant_mode(ctlr_info_t
*h
)
3851 /* This is a bit complicated. There are 8 registers on
3852 * the controller which we write to to tell it 8 different
3853 * sizes of commands which there may be. It's a way of
3854 * reducing the DMA done to fetch each command. Encoded into
3855 * each command's tag are 3 bits which communicate to the controller
3856 * which of the eight sizes that command fits within. The size of
3857 * each command depends on how many scatter gather entries there are.
3858 * Each SG entry requires 16 bytes. The eight registers are programmed
3859 * with the number of 16-byte blocks a command of that size requires.
3860 * The smallest command possible requires 5 such 16 byte blocks.
3861 * the largest command possible requires MAXSGENTRIES + 4 16-byte
3862 * blocks. Note, this only extends to the SG entries contained
3863 * within the command block, and does not extend to chained blocks
3864 * of SG elements. bft[] contains the eight values we write to
3865 * the registers. They are not evenly distributed, but have more
3866 * sizes for small commands, and fewer sizes for larger commands.
3869 int bft
[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES
+ 4};
3871 * 5 = 1 s/g entry or 4k
3872 * 6 = 2 s/g entry or 8k
3873 * 8 = 4 s/g entry or 16k
3874 * 10 = 6 s/g entry or 24k
3876 unsigned long register_value
;
3877 BUILD_BUG_ON(28 > MAXSGENTRIES
+ 4);
3879 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
3881 /* Controller spec: zero out this buffer. */
3882 memset(h
->reply_pool
, 0, h
->max_commands
* sizeof(__u64
));
3883 h
->reply_pool_head
= h
->reply_pool
;
3885 trans_offset
= readl(&(h
->cfgtable
->TransMethodOffset
));
3886 calc_bucket_map(bft
, ARRAY_SIZE(bft
), h
->maxsgentries
,
3887 h
->blockFetchTable
);
3888 writel(bft
[0], &h
->transtable
->BlockFetch0
);
3889 writel(bft
[1], &h
->transtable
->BlockFetch1
);
3890 writel(bft
[2], &h
->transtable
->BlockFetch2
);
3891 writel(bft
[3], &h
->transtable
->BlockFetch3
);
3892 writel(bft
[4], &h
->transtable
->BlockFetch4
);
3893 writel(bft
[5], &h
->transtable
->BlockFetch5
);
3894 writel(bft
[6], &h
->transtable
->BlockFetch6
);
3895 writel(bft
[7], &h
->transtable
->BlockFetch7
);
3897 /* size of controller ring buffer */
3898 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
3899 writel(1, &h
->transtable
->RepQCount
);
3900 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
3901 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
3902 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
3903 writel(0, &h
->transtable
->RepQAddr0High32
);
3904 writel(CFGTBL_Trans_Performant
,
3905 &(h
->cfgtable
->HostWrite
.TransportRequest
));
3907 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3908 cciss_wait_for_mode_change_ack(h
);
3909 register_value
= readl(&(h
->cfgtable
->TransportActive
));
3910 if (!(register_value
& CFGTBL_Trans_Performant
))
3911 printk(KERN_WARNING
"cciss: unable to get board into"
3912 " performant mode\n");
3915 static void __devinit
cciss_put_controller_into_performant_mode(ctlr_info_t
*h
)
3917 __u32 trans_support
;
3919 dev_dbg(&h
->pdev
->dev
, "Trying to put board into Performant mode\n");
3920 /* Attempt to put controller into performant mode if supported */
3921 /* Does board support performant mode? */
3922 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
3923 if (!(trans_support
& PERFORMANT_MODE
))
3926 printk(KERN_WARNING
"cciss%d: Placing controller into "
3927 "performant mode\n", h
->ctlr
);
3928 /* Performant mode demands commands on a 32 byte boundary
3929 * pci_alloc_consistent aligns on page boundarys already.
3930 * Just need to check if divisible by 32
3932 if ((sizeof(CommandList_struct
) % 32) != 0) {
3933 printk(KERN_WARNING
"%s %d %s\n",
3934 "cciss info: command size[",
3935 (int)sizeof(CommandList_struct
),
3936 "] not divisible by 32, no performant mode..\n");
3940 /* Performant mode ring buffer and supporting data structures */
3941 h
->reply_pool
= (__u64
*)pci_alloc_consistent(
3942 h
->pdev
, h
->max_commands
* sizeof(__u64
),
3943 &(h
->reply_pool_dhandle
));
3945 /* Need a block fetch table for performant mode */
3946 h
->blockFetchTable
= kmalloc(((h
->maxsgentries
+1) *
3947 sizeof(__u32
)), GFP_KERNEL
);
3949 if ((h
->reply_pool
== NULL
) || (h
->blockFetchTable
== NULL
))
3952 cciss_enter_performant_mode(h
);
3954 /* Change the access methods to the performant access methods */
3955 h
->access
= SA5_performant_access
;
3956 h
->transMethod
= CFGTBL_Trans_Performant
;
3960 kfree(h
->blockFetchTable
);
3962 pci_free_consistent(h
->pdev
,
3963 h
->max_commands
* sizeof(__u64
),
3965 h
->reply_pool_dhandle
);
3968 } /* cciss_put_controller_into_performant_mode */
3970 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
3971 * controllers that are capable. If not, we use IO-APIC mode.
3974 static void __devinit
cciss_interrupt_mode(ctlr_info_t
*h
)
3976 #ifdef CONFIG_PCI_MSI
3978 struct msix_entry cciss_msix_entries
[4] = { {0, 0}, {0, 1},
3982 /* Some boards advertise MSI but don't really support it */
3983 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
3984 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
3985 goto default_int_mode
;
3987 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSIX
)) {
3988 err
= pci_enable_msix(h
->pdev
, cciss_msix_entries
, 4);
3990 h
->intr
[0] = cciss_msix_entries
[0].vector
;
3991 h
->intr
[1] = cciss_msix_entries
[1].vector
;
3992 h
->intr
[2] = cciss_msix_entries
[2].vector
;
3993 h
->intr
[3] = cciss_msix_entries
[3].vector
;
3998 printk(KERN_WARNING
"cciss: only %d MSI-X vectors "
3999 "available\n", err
);
4000 goto default_int_mode
;
4002 printk(KERN_WARNING
"cciss: MSI-X init failed %d\n",
4004 goto default_int_mode
;
4007 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSI
)) {
4008 if (!pci_enable_msi(h
->pdev
))
4011 printk(KERN_WARNING
"cciss: MSI init failed\n");
4014 #endif /* CONFIG_PCI_MSI */
4015 /* if we get here we're going to use the default interrupt mode */
4016 h
->intr
[PERF_MODE_INT
] = h
->pdev
->irq
;
4020 static int __devinit
cciss_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
4023 u32 subsystem_vendor_id
, subsystem_device_id
;
4025 subsystem_vendor_id
= pdev
->subsystem_vendor
;
4026 subsystem_device_id
= pdev
->subsystem_device
;
4027 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
4028 subsystem_vendor_id
;
4030 for (i
= 0; i
< ARRAY_SIZE(products
); i
++) {
4031 /* Stand aside for hpsa driver on request */
4032 if (cciss_allow_hpsa
&& products
[i
].board_id
== HPSA_BOUNDARY
)
4034 if (*board_id
== products
[i
].board_id
)
4037 dev_warn(&pdev
->dev
, "unrecognized board ID: 0x%08x, ignoring.\n",
4042 static inline bool cciss_board_disabled(ctlr_info_t
*h
)
4046 (void) pci_read_config_word(h
->pdev
, PCI_COMMAND
, &command
);
4047 return ((command
& PCI_COMMAND_MEMORY
) == 0);
4050 static int __devinit
cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
4051 unsigned long *memory_bar
)
4055 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
4056 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
4057 /* addressing mode bits already removed */
4058 *memory_bar
= pci_resource_start(pdev
, i
);
4059 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
4063 dev_warn(&pdev
->dev
, "no memory BAR found\n");
4067 static int __devinit
cciss_wait_for_board_ready(ctlr_info_t
*h
)
4072 for (i
= 0; i
< CCISS_BOARD_READY_ITERATIONS
; i
++) {
4073 scratchpad
= readl(h
->vaddr
+ SA5_SCRATCHPAD_OFFSET
);
4074 if (scratchpad
== CCISS_FIRMWARE_READY
)
4076 msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS
);
4078 dev_warn(&h
->pdev
->dev
, "board not ready, timed out.\n");
4082 static int __devinit
cciss_find_cfg_addrs(struct pci_dev
*pdev
,
4083 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
4086 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
4087 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
4088 *cfg_base_addr
&= (u32
) 0x0000ffff;
4089 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
4090 if (*cfg_base_addr_index
== -1) {
4091 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index, "
4092 "*cfg_base_addr = 0x%08x\n", *cfg_base_addr
);
4098 static int __devinit
cciss_find_cfgtables(ctlr_info_t
*h
)
4102 u64 cfg_base_addr_index
;
4106 rc
= cciss_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
4107 &cfg_base_addr_index
, &cfg_offset
);
4110 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4111 cfg_base_addr_index
) + cfg_offset
, sizeof(h
->cfgtable
));
4114 /* Find performant mode table. */
4115 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
4116 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4117 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
4118 sizeof(*h
->transtable
));
4124 static void __devinit
cciss_get_max_perf_mode_cmds(struct ctlr_info
*h
)
4126 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
4127 if (h
->max_commands
< 16) {
4128 dev_warn(&h
->pdev
->dev
, "Controller reports "
4129 "max supported commands of %d, an obvious lie. "
4130 "Using 16. Ensure that firmware is up to date.\n",
4132 h
->max_commands
= 16;
4136 /* Interrogate the hardware for some limits:
4137 * max commands, max SG elements without chaining, and with chaining,
4138 * SG chain block size, etc.
4140 static void __devinit
cciss_find_board_params(ctlr_info_t
*h
)
4142 cciss_get_max_perf_mode_cmds(h
);
4143 h
->nr_cmds
= h
->max_commands
- 4; /* Allow room for some ioctls */
4144 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxSGElements
));
4146 * Limit in-command s/g elements to 32 save dma'able memory.
4147 * Howvever spec says if 0, use 31
4149 h
->max_cmd_sgentries
= 31;
4150 if (h
->maxsgentries
> 512) {
4151 h
->max_cmd_sgentries
= 32;
4152 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sgentries
+ 1;
4153 h
->maxsgentries
--; /* save one for chain pointer */
4155 h
->maxsgentries
= 31; /* default to traditional values */
4160 static inline bool CISS_signature_present(ctlr_info_t
*h
)
4162 if ((readb(&h
->cfgtable
->Signature
[0]) != 'C') ||
4163 (readb(&h
->cfgtable
->Signature
[1]) != 'I') ||
4164 (readb(&h
->cfgtable
->Signature
[2]) != 'S') ||
4165 (readb(&h
->cfgtable
->Signature
[3]) != 'S')) {
4166 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
4172 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
4173 static inline void cciss_enable_scsi_prefetch(ctlr_info_t
*h
)
4178 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
4180 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
4184 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
4185 * in a prefetch beyond physical memory.
4187 static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t
*h
)
4192 if (h
->board_id
!= 0x3225103C)
4194 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
4195 dma_prefetch
|= 0x8000;
4196 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
4197 pci_read_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, &dma_refetch
);
4199 pci_write_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, dma_refetch
);
4202 static int __devinit
cciss_pci_init(ctlr_info_t
*h
)
4204 int prod_index
, err
;
4206 prod_index
= cciss_lookup_board_id(h
->pdev
, &h
->board_id
);
4209 h
->product_name
= products
[prod_index
].product_name
;
4210 h
->access
= *(products
[prod_index
].access
);
4212 if (cciss_board_disabled(h
)) {
4214 "cciss: controller appears to be disabled\n");
4217 err
= pci_enable_device(h
->pdev
);
4219 printk(KERN_ERR
"cciss: Unable to Enable PCI device\n");
4223 err
= pci_request_regions(h
->pdev
, "cciss");
4225 printk(KERN_ERR
"cciss: Cannot obtain PCI resources, "
4231 printk(KERN_INFO
"command = %x\n", command
);
4232 printk(KERN_INFO
"irq = %x\n", h
->pdev
->irq
);
4233 printk(KERN_INFO
"board_id = %x\n", h
->board_id
);
4234 #endif /* CCISS_DEBUG */
4236 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
4237 * else we use the IO-APIC interrupt assigned to us by system ROM.
4239 cciss_interrupt_mode(h
);
4240 err
= cciss_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
4242 goto err_out_free_res
;
4243 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
4246 goto err_out_free_res
;
4248 err
= cciss_wait_for_board_ready(h
);
4250 goto err_out_free_res
;
4251 err
= cciss_find_cfgtables(h
);
4253 goto err_out_free_res
;
4254 print_cfg_table(h
->cfgtable
);
4255 cciss_find_board_params(h
);
4257 if (!CISS_signature_present(h
)) {
4259 goto err_out_free_res
;
4261 cciss_enable_scsi_prefetch(h
);
4262 cciss_p600_dma_prefetch_quirk(h
);
4263 cciss_put_controller_into_performant_mode(h
);
4268 * Deliberately omit pci_disable_device(): it does something nasty to
4269 * Smart Array controllers that pci_enable_device does not undo
4272 iounmap(h
->transtable
);
4274 iounmap(h
->cfgtable
);
4277 pci_release_regions(h
->pdev
);
4281 /* Function to find the first free pointer into our hba[] array
4282 * Returns -1 if no free entries are left.
4284 static int alloc_cciss_hba(void)
4288 for (i
= 0; i
< MAX_CTLR
; i
++) {
4292 h
= kzalloc(sizeof(ctlr_info_t
), GFP_KERNEL
);
4299 printk(KERN_WARNING
"cciss: This driver supports a maximum"
4300 " of %d controllers.\n", MAX_CTLR
);
4303 printk(KERN_ERR
"cciss: out of memory.\n");
4307 static void free_hba(ctlr_info_t
*h
)
4311 hba
[h
->ctlr
] = NULL
;
4312 for (i
= 0; i
< h
->highest_lun
+ 1; i
++)
4313 if (h
->gendisk
[i
] != NULL
)
4314 put_disk(h
->gendisk
[i
]);
4318 /* Send a message CDB to the firmware. */
4319 static __devinit
int cciss_message(struct pci_dev
*pdev
, unsigned char opcode
, unsigned char type
)
4322 CommandListHeader_struct CommandHeader
;
4323 RequestBlock_struct Request
;
4324 ErrDescriptor_struct ErrorDescriptor
;
4326 static const size_t cmd_sz
= sizeof(Command
) + sizeof(ErrorInfo_struct
);
4329 uint32_t paddr32
, tag
;
4330 void __iomem
*vaddr
;
4333 vaddr
= ioremap_nocache(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
4337 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
4338 CCISS commands, so they must be allocated from the lower 4GiB of
4340 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4346 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
4352 /* This must fit, because of the 32-bit consistent DMA mask. Also,
4353 although there's no guarantee, we assume that the address is at
4354 least 4-byte aligned (most likely, it's page-aligned). */
4357 cmd
->CommandHeader
.ReplyQueue
= 0;
4358 cmd
->CommandHeader
.SGList
= 0;
4359 cmd
->CommandHeader
.SGTotal
= 0;
4360 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
4361 cmd
->CommandHeader
.Tag
.upper
= 0;
4362 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
4364 cmd
->Request
.CDBLen
= 16;
4365 cmd
->Request
.Type
.Type
= TYPE_MSG
;
4366 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
4367 cmd
->Request
.Type
.Direction
= XFER_NONE
;
4368 cmd
->Request
.Timeout
= 0; /* Don't time out */
4369 cmd
->Request
.CDB
[0] = opcode
;
4370 cmd
->Request
.CDB
[1] = type
;
4371 memset(&cmd
->Request
.CDB
[2], 0, 14); /* the rest of the CDB is reserved */
4373 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(Command
);
4374 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
4375 cmd
->ErrorDescriptor
.Len
= sizeof(ErrorInfo_struct
);
4377 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
4379 for (i
= 0; i
< 10; i
++) {
4380 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
4381 if ((tag
& ~3) == paddr32
)
4383 schedule_timeout_uninterruptible(HZ
);
4388 /* we leak the DMA buffer here ... no choice since the controller could
4389 still complete the command. */
4391 printk(KERN_ERR
"cciss: controller message %02x:%02x timed out\n",
4396 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
4399 printk(KERN_ERR
"cciss: controller message %02x:%02x failed\n",
4404 printk(KERN_INFO
"cciss: controller message %02x:%02x succeeded\n",
4409 #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0)
4410 #define cciss_noop(p) cciss_message(p, 3, 0)
4412 static __devinit
int cciss_reset_msi(struct pci_dev
*pdev
)
4414 /* the #defines are stolen from drivers/pci/msi.h. */
4415 #define msi_control_reg(base) (base + PCI_MSI_FLAGS)
4416 #define PCI_MSIX_FLAGS_ENABLE (1 << 15)
4421 pos
= pci_find_capability(pdev
, PCI_CAP_ID_MSI
);
4423 pci_read_config_word(pdev
, msi_control_reg(pos
), &control
);
4424 if (control
& PCI_MSI_FLAGS_ENABLE
) {
4425 printk(KERN_INFO
"cciss: resetting MSI\n");
4426 pci_write_config_word(pdev
, msi_control_reg(pos
), control
& ~PCI_MSI_FLAGS_ENABLE
);
4430 pos
= pci_find_capability(pdev
, PCI_CAP_ID_MSIX
);
4432 pci_read_config_word(pdev
, msi_control_reg(pos
), &control
);
4433 if (control
& PCI_MSIX_FLAGS_ENABLE
) {
4434 printk(KERN_INFO
"cciss: resetting MSI-X\n");
4435 pci_write_config_word(pdev
, msi_control_reg(pos
), control
& ~PCI_MSIX_FLAGS_ENABLE
);
4442 static int cciss_controller_hard_reset(struct pci_dev
*pdev
,
4443 void * __iomem vaddr
, bool use_doorbell
)
4449 /* For everything after the P600, the PCI power state method
4450 * of resetting the controller doesn't work, so we have this
4451 * other way using the doorbell register.
4453 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
4454 writel(DOORBELL_CTLR_RESET
, vaddr
+ SA5_DOORBELL
);
4456 } else { /* Try to do it the PCI power state way */
4458 /* Quoting from the Open CISS Specification: "The Power
4459 * Management Control/Status Register (CSR) controls the power
4460 * state of the device. The normal operating state is D0,
4461 * CSR=00h. The software off state is D3, CSR=03h. To reset
4462 * the controller, place the interface device in D3 then to D0,
4463 * this causes a secondary PCI reset which will reset the
4466 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
4469 "cciss_controller_hard_reset: "
4470 "PCI PM not supported\n");
4473 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
4474 /* enter the D3hot power management state */
4475 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
4476 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4478 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4482 /* enter the D0 power management state */
4483 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4485 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4492 /* This does a hard reset of the controller using PCI power management
4493 * states or using the doorbell register. */
4494 static __devinit
int cciss_kdump_hard_reset_controller(struct pci_dev
*pdev
)
4496 u16 saved_config_space
[32];
4499 u64 cfg_base_addr_index
;
4500 void __iomem
*vaddr
;
4501 unsigned long paddr
;
4502 u32 misc_fw_support
, active_transport
;
4504 CfgTable_struct __iomem
*cfgtable
;
4508 /* For controllers as old a the p600, this is very nearly
4511 * pci_save_state(pci_dev);
4512 * pci_set_power_state(pci_dev, PCI_D3hot);
4513 * pci_set_power_state(pci_dev, PCI_D0);
4514 * pci_restore_state(pci_dev);
4516 * but we can't use these nice canned kernel routines on
4517 * kexec, because they also check the MSI/MSI-X state in PCI
4518 * configuration space and do the wrong thing when it is
4519 * set/cleared. Also, the pci_save/restore_state functions
4520 * violate the ordering requirements for restoring the
4521 * configuration space from the CCISS document (see the
4522 * comment below). So we roll our own ....
4524 * For controllers newer than the P600, the pci power state
4525 * method of resetting doesn't work so we have another way
4526 * using the doorbell register.
4529 /* Exclude 640x boards. These are two pci devices in one slot
4530 * which share a battery backed cache module. One controls the
4531 * cache, the other accesses the cache through the one that controls
4532 * it. If we reset the one controlling the cache, the other will
4533 * likely not be happy. Just forbid resetting this conjoined mess.
4535 cciss_lookup_board_id(pdev
, &board_id
);
4536 if (board_id
== 0x409C0E11 || board_id
== 0x409D0E11) {
4537 dev_warn(&pdev
->dev
, "Cannot reset Smart Array 640x "
4538 "due to shared cache module.");
4542 for (i
= 0; i
< 32; i
++)
4543 pci_read_config_word(pdev
, 2*i
, &saved_config_space
[i
]);
4545 /* find the first memory BAR, so we can find the cfg table */
4546 rc
= cciss_pci_find_memory_BAR(pdev
, &paddr
);
4549 vaddr
= remap_pci_mem(paddr
, 0x250);
4553 /* find cfgtable in order to check if reset via doorbell is supported */
4554 rc
= cciss_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
4555 &cfg_base_addr_index
, &cfg_offset
);
4558 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
4559 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
4565 /* If reset via doorbell register is supported, use that. */
4566 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
4567 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
4569 rc
= cciss_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
4571 goto unmap_cfgtable
;
4573 /* Restore the PCI configuration space. The Open CISS
4574 * Specification says, "Restore the PCI Configuration
4575 * Registers, offsets 00h through 60h. It is important to
4576 * restore the command register, 16-bits at offset 04h,
4577 * last. Do not restore the configuration status register,
4578 * 16-bits at offset 06h." Note that the offset is 2*i.
4580 for (i
= 0; i
< 32; i
++) {
4581 if (i
== 2 || i
== 3)
4583 pci_write_config_word(pdev
, 2*i
, saved_config_space
[i
]);
4586 pci_write_config_word(pdev
, 4, saved_config_space
[2]);
4588 /* Some devices (notably the HP Smart Array 5i Controller)
4589 need a little pause here */
4590 msleep(CCISS_POST_RESET_PAUSE_MSECS
);
4592 /* Controller should be in simple mode at this point. If it's not,
4593 * It means we're on one of those controllers which doesn't support
4594 * the doorbell reset method and on which the PCI power management reset
4595 * method doesn't work (P800, for example.)
4596 * In those cases, don't try to proceed, as it generally doesn't work.
4598 active_transport
= readl(&cfgtable
->TransportActive
);
4599 if (active_transport
& PERFORMANT_MODE
) {
4600 dev_warn(&pdev
->dev
, "Unable to successfully reset controller,"
4601 " Ignoring controller.\n");
4613 static __devinit
int cciss_init_reset_devices(struct pci_dev
*pdev
)
4620 /* Reset the controller with a PCI power-cycle or via doorbell */
4621 rc
= cciss_kdump_hard_reset_controller(pdev
);
4623 /* -ENOTSUPP here means we cannot reset the controller
4624 * but it's already (and still) up and running in
4625 * "performant mode". Or, it might be 640x, which can't reset
4626 * due to concerns about shared bbwc between 6402/6404 pair.
4628 if (rc
== -ENOTSUPP
)
4629 return 0; /* just try to do the kdump anyhow. */
4632 if (cciss_reset_msi(pdev
))
4635 /* Now try to get the controller to respond to a no-op */
4636 for (i
= 0; i
< CCISS_POST_RESET_NOOP_RETRIES
; i
++) {
4637 if (cciss_noop(pdev
) == 0)
4640 dev_warn(&pdev
->dev
, "no-op failed%s\n",
4641 (i
< CCISS_POST_RESET_NOOP_RETRIES
- 1 ?
4642 "; re-trying" : ""));
4643 msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS
);
4649 * This is it. Find all the controllers and register them. I really hate
4650 * stealing all these major device numbers.
4651 * returns the number of block devices registered.
4653 static int __devinit
cciss_init_one(struct pci_dev
*pdev
,
4654 const struct pci_device_id
*ent
)
4660 int dac
, return_code
;
4661 InquiryData_struct
*inq_buff
;
4664 rc
= cciss_init_reset_devices(pdev
);
4667 i
= alloc_cciss_hba();
4673 h
->busy_initializing
= 1;
4674 INIT_HLIST_HEAD(&h
->cmpQ
);
4675 INIT_HLIST_HEAD(&h
->reqQ
);
4676 mutex_init(&h
->busy_shutting_down
);
4678 if (cciss_pci_init(h
) != 0)
4679 goto clean_no_release_regions
;
4681 sprintf(h
->devname
, "cciss%d", i
);
4684 init_completion(&h
->scan_wait
);
4686 if (cciss_create_hba_sysfs_entry(h
))
4689 /* configure PCI DMA stuff */
4690 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)))
4692 else if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)))
4695 printk(KERN_ERR
"cciss: no suitable DMA available\n");
4700 * register with the major number, or get a dynamic major number
4701 * by passing 0 as argument. This is done for greater than
4702 * 8 controller support.
4704 if (i
< MAX_CTLR_ORIG
)
4705 h
->major
= COMPAQ_CISS_MAJOR
+ i
;
4706 rc
= register_blkdev(h
->major
, h
->devname
);
4707 if (rc
== -EBUSY
|| rc
== -EINVAL
) {
4709 "cciss: Unable to get major number %d for %s "
4710 "on hba %d\n", h
->major
, h
->devname
, i
);
4713 if (i
>= MAX_CTLR_ORIG
)
4717 /* make sure the board interrupts are off */
4718 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
4719 if (h
->msi_vector
|| h
->msix_vector
) {
4720 if (request_irq(h
->intr
[PERF_MODE_INT
],
4722 IRQF_DISABLED
, h
->devname
, h
)) {
4723 printk(KERN_ERR
"cciss: Unable to get irq %d for %s\n",
4724 h
->intr
[PERF_MODE_INT
], h
->devname
);
4728 if (request_irq(h
->intr
[PERF_MODE_INT
], do_cciss_intx
,
4729 IRQF_DISABLED
, h
->devname
, h
)) {
4730 printk(KERN_ERR
"cciss: Unable to get irq %d for %s\n",
4731 h
->intr
[PERF_MODE_INT
], h
->devname
);
4736 printk(KERN_INFO
"%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
4737 h
->devname
, pdev
->device
, pci_name(pdev
),
4738 h
->intr
[PERF_MODE_INT
], dac
? "" : " not");
4741 kmalloc(DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
)
4742 * sizeof(unsigned long), GFP_KERNEL
);
4743 h
->cmd_pool
= (CommandList_struct
*)
4744 pci_alloc_consistent(h
->pdev
,
4745 h
->nr_cmds
* sizeof(CommandList_struct
),
4746 &(h
->cmd_pool_dhandle
));
4747 h
->errinfo_pool
= (ErrorInfo_struct
*)
4748 pci_alloc_consistent(h
->pdev
,
4749 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4750 &(h
->errinfo_pool_dhandle
));
4751 if ((h
->cmd_pool_bits
== NULL
)
4752 || (h
->cmd_pool
== NULL
)
4753 || (h
->errinfo_pool
== NULL
)) {
4754 printk(KERN_ERR
"cciss: out of memory");
4758 /* Need space for temp scatter list */
4759 h
->scatter_list
= kmalloc(h
->max_commands
*
4760 sizeof(struct scatterlist
*),
4762 for (k
= 0; k
< h
->nr_cmds
; k
++) {
4763 h
->scatter_list
[k
] = kmalloc(sizeof(struct scatterlist
) *
4766 if (h
->scatter_list
[k
] == NULL
) {
4767 printk(KERN_ERR
"cciss%d: could not allocate "
4772 h
->cmd_sg_list
= cciss_allocate_sg_chain_blocks(h
,
4773 h
->chainsize
, h
->nr_cmds
);
4774 if (!h
->cmd_sg_list
&& h
->chainsize
> 0)
4777 spin_lock_init(&h
->lock
);
4779 /* Initialize the pdev driver private data.
4780 have it point to h. */
4781 pci_set_drvdata(pdev
, h
);
4782 /* command and error info recs zeroed out before
4784 memset(h
->cmd_pool_bits
, 0,
4785 DIV_ROUND_UP(h
->nr_cmds
, BITS_PER_LONG
)
4786 * sizeof(unsigned long));
4789 h
->highest_lun
= -1;
4790 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
4792 h
->gendisk
[j
] = NULL
;
4795 cciss_scsi_setup(h
);
4797 /* Turn the interrupts on so we can service requests */
4798 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
4800 /* Get the firmware version */
4801 inq_buff
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
4802 if (inq_buff
== NULL
) {
4803 printk(KERN_ERR
"cciss: out of memory\n");
4807 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
4808 sizeof(InquiryData_struct
), 0, CTLR_LUNID
, TYPE_CMD
);
4809 if (return_code
== IO_OK
) {
4810 h
->firm_ver
[0] = inq_buff
->data_byte
[32];
4811 h
->firm_ver
[1] = inq_buff
->data_byte
[33];
4812 h
->firm_ver
[2] = inq_buff
->data_byte
[34];
4813 h
->firm_ver
[3] = inq_buff
->data_byte
[35];
4814 } else { /* send command failed */
4815 printk(KERN_WARNING
"cciss: unable to determine firmware"
4816 " version of controller\n");
4822 h
->cciss_max_sectors
= 8192;
4824 rebuild_lun_table(h
, 1, 0);
4825 h
->busy_initializing
= 0;
4829 kfree(h
->cmd_pool_bits
);
4830 /* Free up sg elements */
4831 for (k
= 0; k
< h
->nr_cmds
; k
++)
4832 kfree(h
->scatter_list
[k
]);
4833 kfree(h
->scatter_list
);
4834 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
4836 pci_free_consistent(h
->pdev
,
4837 h
->nr_cmds
* sizeof(CommandList_struct
),
4838 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4839 if (h
->errinfo_pool
)
4840 pci_free_consistent(h
->pdev
,
4841 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4843 h
->errinfo_pool_dhandle
);
4844 free_irq(h
->intr
[PERF_MODE_INT
], h
);
4846 unregister_blkdev(h
->major
, h
->devname
);
4848 cciss_destroy_hba_sysfs_entry(h
);
4850 pci_release_regions(pdev
);
4851 clean_no_release_regions
:
4852 h
->busy_initializing
= 0;
4855 * Deliberately omit pci_disable_device(): it does something nasty to
4856 * Smart Array controllers that pci_enable_device does not undo
4858 pci_set_drvdata(pdev
, NULL
);
4863 static void cciss_shutdown(struct pci_dev
*pdev
)
4869 h
= pci_get_drvdata(pdev
);
4870 flush_buf
= kzalloc(4, GFP_KERNEL
);
4873 "cciss:%d cache not flushed, out of memory.\n",
4877 /* write all data in the battery backed cache to disk */
4878 memset(flush_buf
, 0, 4);
4879 return_code
= sendcmd_withirq(h
, CCISS_CACHE_FLUSH
, flush_buf
,
4880 4, 0, CTLR_LUNID
, TYPE_CMD
);
4882 if (return_code
!= IO_OK
)
4883 printk(KERN_WARNING
"cciss%d: Error flushing cache\n",
4885 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
4886 free_irq(h
->intr
[PERF_MODE_INT
], h
);
4889 static void __devexit
cciss_remove_one(struct pci_dev
*pdev
)
4894 if (pci_get_drvdata(pdev
) == NULL
) {
4895 printk(KERN_ERR
"cciss: Unable to remove device \n");
4899 h
= pci_get_drvdata(pdev
);
4901 if (hba
[i
] == NULL
) {
4902 printk(KERN_ERR
"cciss: device appears to "
4903 "already be removed\n");
4907 mutex_lock(&h
->busy_shutting_down
);
4909 remove_from_scan_list(h
);
4910 remove_proc_entry(h
->devname
, proc_cciss
);
4911 unregister_blkdev(h
->major
, h
->devname
);
4913 /* remove it from the disk list */
4914 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
4915 struct gendisk
*disk
= h
->gendisk
[j
];
4917 struct request_queue
*q
= disk
->queue
;
4919 if (disk
->flags
& GENHD_FL_UP
) {
4920 cciss_destroy_ld_sysfs_entry(h
, j
, 1);
4924 blk_cleanup_queue(q
);
4928 #ifdef CONFIG_CISS_SCSI_TAPE
4929 cciss_unregister_scsi(h
); /* unhook from SCSI subsystem */
4932 cciss_shutdown(pdev
);
4934 #ifdef CONFIG_PCI_MSI
4936 pci_disable_msix(h
->pdev
);
4937 else if (h
->msi_vector
)
4938 pci_disable_msi(h
->pdev
);
4939 #endif /* CONFIG_PCI_MSI */
4941 iounmap(h
->transtable
);
4942 iounmap(h
->cfgtable
);
4945 pci_free_consistent(h
->pdev
, h
->nr_cmds
* sizeof(CommandList_struct
),
4946 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4947 pci_free_consistent(h
->pdev
, h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4948 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4949 kfree(h
->cmd_pool_bits
);
4950 /* Free up sg elements */
4951 for (j
= 0; j
< h
->nr_cmds
; j
++)
4952 kfree(h
->scatter_list
[j
]);
4953 kfree(h
->scatter_list
);
4954 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
4956 * Deliberately omit pci_disable_device(): it does something nasty to
4957 * Smart Array controllers that pci_enable_device does not undo
4959 pci_release_regions(pdev
);
4960 pci_set_drvdata(pdev
, NULL
);
4961 cciss_destroy_hba_sysfs_entry(h
);
4962 mutex_unlock(&h
->busy_shutting_down
);
4966 static struct pci_driver cciss_pci_driver
= {
4968 .probe
= cciss_init_one
,
4969 .remove
= __devexit_p(cciss_remove_one
),
4970 .id_table
= cciss_pci_device_id
, /* id_table */
4971 .shutdown
= cciss_shutdown
,
4975 * This is it. Register the PCI driver information for the cards we control
4976 * the OS will call our registered routines when it finds one of our cards.
4978 static int __init
cciss_init(void)
4983 * The hardware requires that commands are aligned on a 64-bit
4984 * boundary. Given that we use pci_alloc_consistent() to allocate an
4985 * array of them, the size must be a multiple of 8 bytes.
4987 BUILD_BUG_ON(sizeof(CommandList_struct
) % COMMANDLIST_ALIGNMENT
);
4988 printk(KERN_INFO DRIVER_NAME
"\n");
4990 err
= bus_register(&cciss_bus_type
);
4994 /* Start the scan thread */
4995 cciss_scan_thread
= kthread_run(scan_thread
, NULL
, "cciss_scan");
4996 if (IS_ERR(cciss_scan_thread
)) {
4997 err
= PTR_ERR(cciss_scan_thread
);
4998 goto err_bus_unregister
;
5001 /* Register for our PCI devices */
5002 err
= pci_register_driver(&cciss_pci_driver
);
5004 goto err_thread_stop
;
5009 kthread_stop(cciss_scan_thread
);
5011 bus_unregister(&cciss_bus_type
);
5016 static void __exit
cciss_cleanup(void)
5020 pci_unregister_driver(&cciss_pci_driver
);
5021 /* double check that all controller entrys have been removed */
5022 for (i
= 0; i
< MAX_CTLR
; i
++) {
5023 if (hba
[i
] != NULL
) {
5024 printk(KERN_WARNING
"cciss: had to remove"
5025 " controller %d\n", i
);
5026 cciss_remove_one(hba
[i
]->pdev
);
5029 kthread_stop(cciss_scan_thread
);
5030 remove_proc_entry("driver/cciss", NULL
);
5031 bus_unregister(&cciss_bus_type
);
5034 module_init(cciss_init
);
5035 module_exit(cciss_cleanup
);