2 * Disk Array driver for HP Smart Array controllers.
3 * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
23 #include <linux/module.h>
24 #include <linux/interrupt.h>
25 #include <linux/types.h>
26 #include <linux/pci.h>
27 #include <linux/pci-aspm.h>
28 #include <linux/kernel.h>
29 #include <linux/slab.h>
30 #include <linux/delay.h>
31 #include <linux/major.h>
33 #include <linux/bio.h>
34 #include <linux/blkpg.h>
35 #include <linux/timer.h>
36 #include <linux/proc_fs.h>
37 #include <linux/seq_file.h>
38 #include <linux/init.h>
39 #include <linux/jiffies.h>
40 #include <linux/hdreg.h>
41 #include <linux/spinlock.h>
42 #include <linux/compat.h>
43 #include <linux/mutex.h>
44 #include <linux/bitmap.h>
46 #include <asm/uaccess.h>
48 #include <linux/dma-mapping.h>
49 #include <linux/blkdev.h>
50 #include <linux/genhd.h>
51 #include <linux/completion.h>
52 #include <scsi/scsi.h>
54 #include <scsi/scsi_ioctl.h>
55 #include <linux/cdrom.h>
56 #include <linux/scatterlist.h>
57 #include <linux/kthread.h>
59 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
60 #define DRIVER_NAME "HP CISS Driver (v 3.6.26)"
61 #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26)
63 /* Embedded module documentation macros - see modules.h */
64 MODULE_AUTHOR("Hewlett-Packard Company");
65 MODULE_DESCRIPTION("Driver for HP Smart Array Controllers");
66 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
67 MODULE_VERSION("3.6.26");
68 MODULE_LICENSE("GPL");
69 static int cciss_tape_cmds
= 6;
70 module_param(cciss_tape_cmds
, int, 0644);
71 MODULE_PARM_DESC(cciss_tape_cmds
,
72 "number of commands to allocate for tape devices (default: 6)");
73 static int cciss_simple_mode
;
74 module_param(cciss_simple_mode
, int, S_IRUGO
|S_IWUSR
);
75 MODULE_PARM_DESC(cciss_simple_mode
,
76 "Use 'simple mode' rather than 'performant mode'");
78 static DEFINE_MUTEX(cciss_mutex
);
79 static struct proc_dir_entry
*proc_cciss
;
81 #include "cciss_cmd.h"
83 #include <linux/cciss_ioctl.h>
85 /* define the PCI info for the cards we can control */
86 static const struct pci_device_id cciss_pci_device_id
[] = {
87 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISS
, 0x0E11, 0x4070},
88 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4080},
89 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4082},
90 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSB
, 0x0E11, 0x4083},
91 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x4091},
92 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409A},
93 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409B},
94 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409C},
95 {PCI_VENDOR_ID_COMPAQ
, PCI_DEVICE_ID_COMPAQ_CISSC
, 0x0E11, 0x409D},
96 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSA
, 0x103C, 0x3225},
97 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3223},
98 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3234},
99 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3235},
100 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3211},
101 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3212},
102 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3213},
103 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3214},
104 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSD
, 0x103C, 0x3215},
105 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x3237},
106 {PCI_VENDOR_ID_HP
, PCI_DEVICE_ID_HP_CISSC
, 0x103C, 0x323D},
110 MODULE_DEVICE_TABLE(pci
, cciss_pci_device_id
);
112 /* board_id = Subsystem Device ID & Vendor ID
113 * product = Marketing Name for the board
114 * access = Address of the struct of function pointers
116 static struct board_type products
[] = {
117 {0x40700E11, "Smart Array 5300", &SA5_access
},
118 {0x40800E11, "Smart Array 5i", &SA5B_access
},
119 {0x40820E11, "Smart Array 532", &SA5B_access
},
120 {0x40830E11, "Smart Array 5312", &SA5B_access
},
121 {0x409A0E11, "Smart Array 641", &SA5_access
},
122 {0x409B0E11, "Smart Array 642", &SA5_access
},
123 {0x409C0E11, "Smart Array 6400", &SA5_access
},
124 {0x409D0E11, "Smart Array 6400 EM", &SA5_access
},
125 {0x40910E11, "Smart Array 6i", &SA5_access
},
126 {0x3225103C, "Smart Array P600", &SA5_access
},
127 {0x3223103C, "Smart Array P800", &SA5_access
},
128 {0x3234103C, "Smart Array P400", &SA5_access
},
129 {0x3235103C, "Smart Array P400i", &SA5_access
},
130 {0x3211103C, "Smart Array E200i", &SA5_access
},
131 {0x3212103C, "Smart Array E200", &SA5_access
},
132 {0x3213103C, "Smart Array E200i", &SA5_access
},
133 {0x3214103C, "Smart Array E200i", &SA5_access
},
134 {0x3215103C, "Smart Array E200i", &SA5_access
},
135 {0x3237103C, "Smart Array E500", &SA5_access
},
136 {0x3223103C, "Smart Array P800", &SA5_access
},
137 {0x3234103C, "Smart Array P400", &SA5_access
},
138 {0x323D103C, "Smart Array P700m", &SA5_access
},
141 /* How long to wait (in milliseconds) for board to go into simple mode */
142 #define MAX_CONFIG_WAIT 30000
143 #define MAX_IOCTL_CONFIG_WAIT 1000
145 /*define how many times we will try a command because of bus resets */
146 #define MAX_CMD_RETRIES 3
150 /* Originally cciss driver only supports 8 major numbers */
151 #define MAX_CTLR_ORIG 8
153 static ctlr_info_t
*hba
[MAX_CTLR
];
155 static struct task_struct
*cciss_scan_thread
;
156 static DEFINE_MUTEX(scan_mutex
);
157 static LIST_HEAD(scan_q
);
159 static void do_cciss_request(struct request_queue
*q
);
160 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
);
161 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
);
162 static int cciss_open(struct block_device
*bdev
, fmode_t mode
);
163 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
);
164 static int cciss_release(struct gendisk
*disk
, fmode_t mode
);
165 static int do_ioctl(struct block_device
*bdev
, fmode_t mode
,
166 unsigned int cmd
, unsigned long arg
);
167 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
168 unsigned int cmd
, unsigned long arg
);
169 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
);
171 static int cciss_revalidate(struct gendisk
*disk
);
172 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
, int via_ioctl
);
173 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
174 int clear_all
, int via_ioctl
);
176 static void cciss_read_capacity(ctlr_info_t
*h
, int logvol
,
177 sector_t
*total_size
, unsigned int *block_size
);
178 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
179 sector_t
*total_size
, unsigned int *block_size
);
180 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
182 unsigned int block_size
, InquiryData_struct
*inq_buff
,
183 drive_info_struct
*drv
);
184 static void __devinit
cciss_interrupt_mode(ctlr_info_t
*);
185 static int __devinit
cciss_enter_simple_mode(struct ctlr_info
*h
);
186 static void start_io(ctlr_info_t
*h
);
187 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
188 __u8 page_code
, unsigned char scsi3addr
[],
190 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
192 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
);
194 static int add_to_scan_list(struct ctlr_info
*h
);
195 static int scan_thread(void *data
);
196 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
);
197 static void cciss_hba_release(struct device
*dev
);
198 static void cciss_device_release(struct device
*dev
);
199 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
);
200 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
);
201 static inline u32
next_command(ctlr_info_t
*h
);
202 static int __devinit
cciss_find_cfg_addrs(struct pci_dev
*pdev
,
203 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
205 static int __devinit
cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
206 unsigned long *memory_bar
);
207 static inline u32
cciss_tag_discard_error_bits(ctlr_info_t
*h
, u32 tag
);
208 static __devinit
int write_driver_ver_to_cfgtable(
209 CfgTable_struct __iomem
*cfgtable
);
211 /* performant mode helper functions */
212 static void calc_bucket_map(int *bucket
, int num_buckets
, int nsgs
,
214 static void cciss_put_controller_into_performant_mode(ctlr_info_t
*h
);
216 #ifdef CONFIG_PROC_FS
217 static void cciss_procinit(ctlr_info_t
*h
);
219 static void cciss_procinit(ctlr_info_t
*h
)
222 #endif /* CONFIG_PROC_FS */
225 static int cciss_compat_ioctl(struct block_device
*, fmode_t
,
226 unsigned, unsigned long);
229 static const struct block_device_operations cciss_fops
= {
230 .owner
= THIS_MODULE
,
231 .open
= cciss_unlocked_open
,
232 .release
= cciss_release
,
234 .getgeo
= cciss_getgeo
,
236 .compat_ioctl
= cciss_compat_ioctl
,
238 .revalidate_disk
= cciss_revalidate
,
241 /* set_performant_mode: Modify the tag for cciss performant
242 * set bit 0 for pull model, bits 3-1 for block fetch
245 static void set_performant_mode(ctlr_info_t
*h
, CommandList_struct
*c
)
247 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
248 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
252 * Enqueuing and dequeuing functions for cmdlists.
254 static inline void addQ(struct list_head
*list
, CommandList_struct
*c
)
256 list_add_tail(&c
->list
, list
);
259 static inline void removeQ(CommandList_struct
*c
)
262 * After kexec/dump some commands might still
263 * be in flight, which the firmware will try
264 * to complete. Resetting the firmware doesn't work
265 * with old fw revisions, so we have to mark
266 * them off as 'stale' to prevent the driver from
269 if (WARN_ON(list_empty(&c
->list
))) {
270 c
->cmd_type
= CMD_MSG_STALE
;
274 list_del_init(&c
->list
);
277 static void enqueue_cmd_and_start_io(ctlr_info_t
*h
,
278 CommandList_struct
*c
)
281 set_performant_mode(h
, c
);
282 spin_lock_irqsave(&h
->lock
, flags
);
285 if (h
->Qdepth
> h
->maxQsinceinit
)
286 h
->maxQsinceinit
= h
->Qdepth
;
288 spin_unlock_irqrestore(&h
->lock
, flags
);
291 static void cciss_free_sg_chain_blocks(SGDescriptor_struct
**cmd_sg_list
,
298 for (i
= 0; i
< nr_cmds
; i
++) {
299 kfree(cmd_sg_list
[i
]);
300 cmd_sg_list
[i
] = NULL
;
305 static SGDescriptor_struct
**cciss_allocate_sg_chain_blocks(
306 ctlr_info_t
*h
, int chainsize
, int nr_cmds
)
309 SGDescriptor_struct
**cmd_sg_list
;
314 cmd_sg_list
= kmalloc(sizeof(*cmd_sg_list
) * nr_cmds
, GFP_KERNEL
);
318 /* Build up chain blocks for each command */
319 for (j
= 0; j
< nr_cmds
; j
++) {
320 /* Need a block of chainsized s/g elements. */
321 cmd_sg_list
[j
] = kmalloc((chainsize
*
322 sizeof(*cmd_sg_list
[j
])), GFP_KERNEL
);
323 if (!cmd_sg_list
[j
]) {
324 dev_err(&h
->pdev
->dev
, "Cannot get memory "
325 "for s/g chains.\n");
331 cciss_free_sg_chain_blocks(cmd_sg_list
, nr_cmds
);
335 static void cciss_unmap_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
)
337 SGDescriptor_struct
*chain_sg
;
340 if (c
->Header
.SGTotal
<= h
->max_cmd_sgentries
)
343 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
344 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
345 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
346 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
349 static void cciss_map_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
,
350 SGDescriptor_struct
*chain_block
, int len
)
352 SGDescriptor_struct
*chain_sg
;
355 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
356 chain_sg
->Ext
= CCISS_SG_CHAIN
;
358 temp64
.val
= pci_map_single(h
->pdev
, chain_block
, len
,
360 chain_sg
->Addr
.lower
= temp64
.val32
.lower
;
361 chain_sg
->Addr
.upper
= temp64
.val32
.upper
;
364 #include "cciss_scsi.c" /* For SCSI tape support */
366 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
369 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1)
371 #ifdef CONFIG_PROC_FS
374 * Report information about this controller.
376 #define ENG_GIG 1000000000
377 #define ENG_GIG_FACTOR (ENG_GIG/512)
378 #define ENGAGE_SCSI "engage scsi"
380 static void cciss_seq_show_header(struct seq_file
*seq
)
382 ctlr_info_t
*h
= seq
->private;
384 seq_printf(seq
, "%s: HP %s Controller\n"
385 "Board ID: 0x%08lx\n"
386 "Firmware Version: %c%c%c%c\n"
388 "Logical drives: %d\n"
389 "Current Q depth: %d\n"
390 "Current # commands on controller: %d\n"
391 "Max Q depth since init: %d\n"
392 "Max # commands on controller since init: %d\n"
393 "Max SG entries since init: %d\n",
396 (unsigned long)h
->board_id
,
397 h
->firm_ver
[0], h
->firm_ver
[1], h
->firm_ver
[2],
398 h
->firm_ver
[3], (unsigned int)h
->intr
[h
->intr_mode
],
400 h
->Qdepth
, h
->commands_outstanding
,
401 h
->maxQsinceinit
, h
->max_outstanding
, h
->maxSG
);
403 #ifdef CONFIG_CISS_SCSI_TAPE
404 cciss_seq_tape_report(seq
, h
);
405 #endif /* CONFIG_CISS_SCSI_TAPE */
408 static void *cciss_seq_start(struct seq_file
*seq
, loff_t
*pos
)
410 ctlr_info_t
*h
= seq
->private;
413 /* prevent displaying bogus info during configuration
414 * or deconfiguration of a logical volume
416 spin_lock_irqsave(&h
->lock
, flags
);
417 if (h
->busy_configuring
) {
418 spin_unlock_irqrestore(&h
->lock
, flags
);
419 return ERR_PTR(-EBUSY
);
421 h
->busy_configuring
= 1;
422 spin_unlock_irqrestore(&h
->lock
, flags
);
425 cciss_seq_show_header(seq
);
430 static int cciss_seq_show(struct seq_file
*seq
, void *v
)
432 sector_t vol_sz
, vol_sz_frac
;
433 ctlr_info_t
*h
= seq
->private;
434 unsigned ctlr
= h
->ctlr
;
436 drive_info_struct
*drv
= h
->drv
[*pos
];
438 if (*pos
> h
->highest_lun
)
441 if (drv
== NULL
) /* it's possible for h->drv[] to have holes. */
447 vol_sz
= drv
->nr_blocks
;
448 vol_sz_frac
= sector_div(vol_sz
, ENG_GIG_FACTOR
);
450 sector_div(vol_sz_frac
, ENG_GIG_FACTOR
);
452 if (drv
->raid_level
< 0 || drv
->raid_level
> RAID_UNKNOWN
)
453 drv
->raid_level
= RAID_UNKNOWN
;
454 seq_printf(seq
, "cciss/c%dd%d:"
455 "\t%4u.%02uGB\tRAID %s\n",
456 ctlr
, (int) *pos
, (int)vol_sz
, (int)vol_sz_frac
,
457 raid_label
[drv
->raid_level
]);
461 static void *cciss_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
463 ctlr_info_t
*h
= seq
->private;
465 if (*pos
> h
->highest_lun
)
472 static void cciss_seq_stop(struct seq_file
*seq
, void *v
)
474 ctlr_info_t
*h
= seq
->private;
476 /* Only reset h->busy_configuring if we succeeded in setting
477 * it during cciss_seq_start. */
478 if (v
== ERR_PTR(-EBUSY
))
481 h
->busy_configuring
= 0;
484 static const struct seq_operations cciss_seq_ops
= {
485 .start
= cciss_seq_start
,
486 .show
= cciss_seq_show
,
487 .next
= cciss_seq_next
,
488 .stop
= cciss_seq_stop
,
491 static int cciss_seq_open(struct inode
*inode
, struct file
*file
)
493 int ret
= seq_open(file
, &cciss_seq_ops
);
494 struct seq_file
*seq
= file
->private_data
;
497 seq
->private = PDE(inode
)->data
;
503 cciss_proc_write(struct file
*file
, const char __user
*buf
,
504 size_t length
, loff_t
*ppos
)
509 #ifndef CONFIG_CISS_SCSI_TAPE
513 if (!buf
|| length
> PAGE_SIZE
- 1)
516 buffer
= (char *)__get_free_page(GFP_KERNEL
);
521 if (copy_from_user(buffer
, buf
, length
))
523 buffer
[length
] = '\0';
525 #ifdef CONFIG_CISS_SCSI_TAPE
526 if (strncmp(ENGAGE_SCSI
, buffer
, sizeof ENGAGE_SCSI
- 1) == 0) {
527 struct seq_file
*seq
= file
->private_data
;
528 ctlr_info_t
*h
= seq
->private;
530 err
= cciss_engage_scsi(h
);
534 #endif /* CONFIG_CISS_SCSI_TAPE */
536 /* might be nice to have "disengage" too, but it's not
537 safely possible. (only 1 module use count, lock issues.) */
540 free_page((unsigned long)buffer
);
544 static const struct file_operations cciss_proc_fops
= {
545 .owner
= THIS_MODULE
,
546 .open
= cciss_seq_open
,
549 .release
= seq_release
,
550 .write
= cciss_proc_write
,
553 static void __devinit
cciss_procinit(ctlr_info_t
*h
)
555 struct proc_dir_entry
*pde
;
557 if (proc_cciss
== NULL
)
558 proc_cciss
= proc_mkdir("driver/cciss", NULL
);
561 pde
= proc_create_data(h
->devname
, S_IWUSR
| S_IRUSR
| S_IRGRP
|
563 &cciss_proc_fops
, h
);
565 #endif /* CONFIG_PROC_FS */
567 #define MAX_PRODUCT_NAME_LEN 19
569 #define to_hba(n) container_of(n, struct ctlr_info, dev)
570 #define to_drv(n) container_of(n, drive_info_struct, dev)
572 /* List of controllers which cannot be hard reset on kexec with reset_devices */
573 static u32 unresettable_controller
[] = {
574 0x324a103C, /* Smart Array P712m */
575 0x324b103C, /* SmartArray P711m */
576 0x3223103C, /* Smart Array P800 */
577 0x3234103C, /* Smart Array P400 */
578 0x3235103C, /* Smart Array P400i */
579 0x3211103C, /* Smart Array E200i */
580 0x3212103C, /* Smart Array E200 */
581 0x3213103C, /* Smart Array E200i */
582 0x3214103C, /* Smart Array E200i */
583 0x3215103C, /* Smart Array E200i */
584 0x3237103C, /* Smart Array E500 */
585 0x323D103C, /* Smart Array P700m */
586 0x409C0E11, /* Smart Array 6400 */
587 0x409D0E11, /* Smart Array 6400 EM */
590 /* List of controllers which cannot even be soft reset */
591 static u32 soft_unresettable_controller
[] = {
592 0x409C0E11, /* Smart Array 6400 */
593 0x409D0E11, /* Smart Array 6400 EM */
596 static int ctlr_is_hard_resettable(u32 board_id
)
600 for (i
= 0; i
< ARRAY_SIZE(unresettable_controller
); i
++)
601 if (unresettable_controller
[i
] == board_id
)
606 static int ctlr_is_soft_resettable(u32 board_id
)
610 for (i
= 0; i
< ARRAY_SIZE(soft_unresettable_controller
); i
++)
611 if (soft_unresettable_controller
[i
] == board_id
)
616 static int ctlr_is_resettable(u32 board_id
)
618 return ctlr_is_hard_resettable(board_id
) ||
619 ctlr_is_soft_resettable(board_id
);
622 static ssize_t
host_show_resettable(struct device
*dev
,
623 struct device_attribute
*attr
,
626 struct ctlr_info
*h
= to_hba(dev
);
628 return snprintf(buf
, 20, "%d\n", ctlr_is_resettable(h
->board_id
));
630 static DEVICE_ATTR(resettable
, S_IRUGO
, host_show_resettable
, NULL
);
632 static ssize_t
host_store_rescan(struct device
*dev
,
633 struct device_attribute
*attr
,
634 const char *buf
, size_t count
)
636 struct ctlr_info
*h
= to_hba(dev
);
639 wake_up_process(cciss_scan_thread
);
640 wait_for_completion_interruptible(&h
->scan_wait
);
644 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
646 static ssize_t
host_show_transport_mode(struct device
*dev
,
647 struct device_attribute
*attr
,
650 struct ctlr_info
*h
= to_hba(dev
);
652 return snprintf(buf
, 20, "%s\n",
653 h
->transMethod
& CFGTBL_Trans_Performant
?
654 "performant" : "simple");
656 static DEVICE_ATTR(transport_mode
, S_IRUGO
, host_show_transport_mode
, NULL
);
658 static ssize_t
dev_show_unique_id(struct device
*dev
,
659 struct device_attribute
*attr
,
662 drive_info_struct
*drv
= to_drv(dev
);
663 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
668 spin_lock_irqsave(&h
->lock
, flags
);
669 if (h
->busy_configuring
)
672 memcpy(sn
, drv
->serial_no
, sizeof(sn
));
673 spin_unlock_irqrestore(&h
->lock
, flags
);
678 return snprintf(buf
, 16 * 2 + 2,
679 "%02X%02X%02X%02X%02X%02X%02X%02X"
680 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
681 sn
[0], sn
[1], sn
[2], sn
[3],
682 sn
[4], sn
[5], sn
[6], sn
[7],
683 sn
[8], sn
[9], sn
[10], sn
[11],
684 sn
[12], sn
[13], sn
[14], sn
[15]);
686 static DEVICE_ATTR(unique_id
, S_IRUGO
, dev_show_unique_id
, NULL
);
688 static ssize_t
dev_show_vendor(struct device
*dev
,
689 struct device_attribute
*attr
,
692 drive_info_struct
*drv
= to_drv(dev
);
693 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
694 char vendor
[VENDOR_LEN
+ 1];
698 spin_lock_irqsave(&h
->lock
, flags
);
699 if (h
->busy_configuring
)
702 memcpy(vendor
, drv
->vendor
, VENDOR_LEN
+ 1);
703 spin_unlock_irqrestore(&h
->lock
, flags
);
708 return snprintf(buf
, sizeof(vendor
) + 1, "%s\n", drv
->vendor
);
710 static DEVICE_ATTR(vendor
, S_IRUGO
, dev_show_vendor
, NULL
);
712 static ssize_t
dev_show_model(struct device
*dev
,
713 struct device_attribute
*attr
,
716 drive_info_struct
*drv
= to_drv(dev
);
717 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
718 char model
[MODEL_LEN
+ 1];
722 spin_lock_irqsave(&h
->lock
, flags
);
723 if (h
->busy_configuring
)
726 memcpy(model
, drv
->model
, MODEL_LEN
+ 1);
727 spin_unlock_irqrestore(&h
->lock
, flags
);
732 return snprintf(buf
, sizeof(model
) + 1, "%s\n", drv
->model
);
734 static DEVICE_ATTR(model
, S_IRUGO
, dev_show_model
, NULL
);
736 static ssize_t
dev_show_rev(struct device
*dev
,
737 struct device_attribute
*attr
,
740 drive_info_struct
*drv
= to_drv(dev
);
741 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
742 char rev
[REV_LEN
+ 1];
746 spin_lock_irqsave(&h
->lock
, flags
);
747 if (h
->busy_configuring
)
750 memcpy(rev
, drv
->rev
, REV_LEN
+ 1);
751 spin_unlock_irqrestore(&h
->lock
, flags
);
756 return snprintf(buf
, sizeof(rev
) + 1, "%s\n", drv
->rev
);
758 static DEVICE_ATTR(rev
, S_IRUGO
, dev_show_rev
, NULL
);
760 static ssize_t
cciss_show_lunid(struct device
*dev
,
761 struct device_attribute
*attr
, char *buf
)
763 drive_info_struct
*drv
= to_drv(dev
);
764 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
766 unsigned char lunid
[8];
768 spin_lock_irqsave(&h
->lock
, flags
);
769 if (h
->busy_configuring
) {
770 spin_unlock_irqrestore(&h
->lock
, flags
);
774 spin_unlock_irqrestore(&h
->lock
, flags
);
777 memcpy(lunid
, drv
->LunID
, sizeof(lunid
));
778 spin_unlock_irqrestore(&h
->lock
, flags
);
779 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
780 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
781 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
783 static DEVICE_ATTR(lunid
, S_IRUGO
, cciss_show_lunid
, NULL
);
785 static ssize_t
cciss_show_raid_level(struct device
*dev
,
786 struct device_attribute
*attr
, char *buf
)
788 drive_info_struct
*drv
= to_drv(dev
);
789 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
793 spin_lock_irqsave(&h
->lock
, flags
);
794 if (h
->busy_configuring
) {
795 spin_unlock_irqrestore(&h
->lock
, flags
);
798 raid
= drv
->raid_level
;
799 spin_unlock_irqrestore(&h
->lock
, flags
);
800 if (raid
< 0 || raid
> RAID_UNKNOWN
)
803 return snprintf(buf
, strlen(raid_label
[raid
]) + 7, "RAID %s\n",
806 static DEVICE_ATTR(raid_level
, S_IRUGO
, cciss_show_raid_level
, NULL
);
808 static ssize_t
cciss_show_usage_count(struct device
*dev
,
809 struct device_attribute
*attr
, char *buf
)
811 drive_info_struct
*drv
= to_drv(dev
);
812 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
816 spin_lock_irqsave(&h
->lock
, flags
);
817 if (h
->busy_configuring
) {
818 spin_unlock_irqrestore(&h
->lock
, flags
);
821 count
= drv
->usage_count
;
822 spin_unlock_irqrestore(&h
->lock
, flags
);
823 return snprintf(buf
, 20, "%d\n", count
);
825 static DEVICE_ATTR(usage_count
, S_IRUGO
, cciss_show_usage_count
, NULL
);
827 static struct attribute
*cciss_host_attrs
[] = {
828 &dev_attr_rescan
.attr
,
829 &dev_attr_resettable
.attr
,
830 &dev_attr_transport_mode
.attr
,
834 static struct attribute_group cciss_host_attr_group
= {
835 .attrs
= cciss_host_attrs
,
838 static const struct attribute_group
*cciss_host_attr_groups
[] = {
839 &cciss_host_attr_group
,
843 static struct device_type cciss_host_type
= {
844 .name
= "cciss_host",
845 .groups
= cciss_host_attr_groups
,
846 .release
= cciss_hba_release
,
849 static struct attribute
*cciss_dev_attrs
[] = {
850 &dev_attr_unique_id
.attr
,
851 &dev_attr_model
.attr
,
852 &dev_attr_vendor
.attr
,
854 &dev_attr_lunid
.attr
,
855 &dev_attr_raid_level
.attr
,
856 &dev_attr_usage_count
.attr
,
860 static struct attribute_group cciss_dev_attr_group
= {
861 .attrs
= cciss_dev_attrs
,
864 static const struct attribute_group
*cciss_dev_attr_groups
[] = {
865 &cciss_dev_attr_group
,
869 static struct device_type cciss_dev_type
= {
870 .name
= "cciss_device",
871 .groups
= cciss_dev_attr_groups
,
872 .release
= cciss_device_release
,
875 static struct bus_type cciss_bus_type
= {
880 * cciss_hba_release is called when the reference count
881 * of h->dev goes to zero.
883 static void cciss_hba_release(struct device
*dev
)
886 * nothing to do, but need this to avoid a warning
887 * about not having a release handler from lib/kref.c.
892 * Initialize sysfs entry for each controller. This sets up and registers
893 * the 'cciss#' directory for each individual controller under
894 * /sys/bus/pci/devices/<dev>/.
896 static int cciss_create_hba_sysfs_entry(struct ctlr_info
*h
)
898 device_initialize(&h
->dev
);
899 h
->dev
.type
= &cciss_host_type
;
900 h
->dev
.bus
= &cciss_bus_type
;
901 dev_set_name(&h
->dev
, "%s", h
->devname
);
902 h
->dev
.parent
= &h
->pdev
->dev
;
904 return device_add(&h
->dev
);
908 * Remove sysfs entries for an hba.
910 static void cciss_destroy_hba_sysfs_entry(struct ctlr_info
*h
)
913 put_device(&h
->dev
); /* final put. */
916 /* cciss_device_release is called when the reference count
917 * of h->drv[x]dev goes to zero.
919 static void cciss_device_release(struct device
*dev
)
921 drive_info_struct
*drv
= to_drv(dev
);
926 * Initialize sysfs for each logical drive. This sets up and registers
927 * the 'c#d#' directory for each individual logical drive under
928 * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from
929 * /sys/block/cciss!c#d# to this entry.
931 static long cciss_create_ld_sysfs_entry(struct ctlr_info
*h
,
936 if (h
->drv
[drv_index
]->device_initialized
)
939 dev
= &h
->drv
[drv_index
]->dev
;
940 device_initialize(dev
);
941 dev
->type
= &cciss_dev_type
;
942 dev
->bus
= &cciss_bus_type
;
943 dev_set_name(dev
, "c%dd%d", h
->ctlr
, drv_index
);
944 dev
->parent
= &h
->dev
;
945 h
->drv
[drv_index
]->device_initialized
= 1;
946 return device_add(dev
);
950 * Remove sysfs entries for a logical drive.
952 static void cciss_destroy_ld_sysfs_entry(struct ctlr_info
*h
, int drv_index
,
955 struct device
*dev
= &h
->drv
[drv_index
]->dev
;
957 /* special case for c*d0, we only destroy it on controller exit */
958 if (drv_index
== 0 && !ctlr_exiting
)
962 put_device(dev
); /* the "final" put. */
963 h
->drv
[drv_index
] = NULL
;
967 * For operations that cannot sleep, a command block is allocated at init,
968 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
969 * which ones are free or in use.
971 static CommandList_struct
*cmd_alloc(ctlr_info_t
*h
)
973 CommandList_struct
*c
;
976 dma_addr_t cmd_dma_handle
, err_dma_handle
;
979 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
982 } while (test_and_set_bit(i
, h
->cmd_pool_bits
) != 0);
984 memset(c
, 0, sizeof(CommandList_struct
));
985 cmd_dma_handle
= h
->cmd_pool_dhandle
+ i
* sizeof(CommandList_struct
);
986 c
->err_info
= h
->errinfo_pool
+ i
;
987 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
988 err_dma_handle
= h
->errinfo_pool_dhandle
989 + i
* sizeof(ErrorInfo_struct
);
994 INIT_LIST_HEAD(&c
->list
);
995 c
->busaddr
= (__u32
) cmd_dma_handle
;
996 temp64
.val
= (__u64
) err_dma_handle
;
997 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
998 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
999 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
1005 /* allocate a command using pci_alloc_consistent, used for ioctls,
1006 * etc., not for the main i/o path.
1008 static CommandList_struct
*cmd_special_alloc(ctlr_info_t
*h
)
1010 CommandList_struct
*c
;
1012 dma_addr_t cmd_dma_handle
, err_dma_handle
;
1014 c
= (CommandList_struct
*) pci_alloc_consistent(h
->pdev
,
1015 sizeof(CommandList_struct
), &cmd_dma_handle
);
1018 memset(c
, 0, sizeof(CommandList_struct
));
1022 c
->err_info
= (ErrorInfo_struct
*)
1023 pci_alloc_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
1026 if (c
->err_info
== NULL
) {
1027 pci_free_consistent(h
->pdev
,
1028 sizeof(CommandList_struct
), c
, cmd_dma_handle
);
1031 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
1033 INIT_LIST_HEAD(&c
->list
);
1034 c
->busaddr
= (__u32
) cmd_dma_handle
;
1035 temp64
.val
= (__u64
) err_dma_handle
;
1036 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
1037 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
1038 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
1044 static void cmd_free(ctlr_info_t
*h
, CommandList_struct
*c
)
1048 i
= c
- h
->cmd_pool
;
1049 clear_bit(i
, h
->cmd_pool_bits
);
1053 static void cmd_special_free(ctlr_info_t
*h
, CommandList_struct
*c
)
1057 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
1058 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
1059 pci_free_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
1060 c
->err_info
, (dma_addr_t
) temp64
.val
);
1061 pci_free_consistent(h
->pdev
, sizeof(CommandList_struct
), c
,
1062 (dma_addr_t
) cciss_tag_discard_error_bits(h
, (u32
) c
->busaddr
));
1065 static inline ctlr_info_t
*get_host(struct gendisk
*disk
)
1067 return disk
->queue
->queuedata
;
1070 static inline drive_info_struct
*get_drv(struct gendisk
*disk
)
1072 return disk
->private_data
;
1076 * Open. Make sure the device is really there.
1078 static int cciss_open(struct block_device
*bdev
, fmode_t mode
)
1080 ctlr_info_t
*h
= get_host(bdev
->bd_disk
);
1081 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1083 dev_dbg(&h
->pdev
->dev
, "cciss_open %s\n", bdev
->bd_disk
->disk_name
);
1084 if (drv
->busy_configuring
)
1087 * Root is allowed to open raw volume zero even if it's not configured
1088 * so array config can still work. Root is also allowed to open any
1089 * volume that has a LUN ID, so it can issue IOCTL to reread the
1090 * disk information. I don't think I really like this
1091 * but I'm already using way to many device nodes to claim another one
1092 * for "raw controller".
1094 if (drv
->heads
== 0) {
1095 if (MINOR(bdev
->bd_dev
) != 0) { /* not node 0? */
1096 /* if not node 0 make sure it is a partition = 0 */
1097 if (MINOR(bdev
->bd_dev
) & 0x0f) {
1099 /* if it is, make sure we have a LUN ID */
1100 } else if (memcmp(drv
->LunID
, CTLR_LUNID
,
1101 sizeof(drv
->LunID
))) {
1105 if (!capable(CAP_SYS_ADMIN
))
1113 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
)
1117 mutex_lock(&cciss_mutex
);
1118 ret
= cciss_open(bdev
, mode
);
1119 mutex_unlock(&cciss_mutex
);
1125 * Close. Sync first.
1127 static int cciss_release(struct gendisk
*disk
, fmode_t mode
)
1130 drive_info_struct
*drv
;
1132 mutex_lock(&cciss_mutex
);
1134 drv
= get_drv(disk
);
1135 dev_dbg(&h
->pdev
->dev
, "cciss_release %s\n", disk
->disk_name
);
1138 mutex_unlock(&cciss_mutex
);
1142 static int do_ioctl(struct block_device
*bdev
, fmode_t mode
,
1143 unsigned cmd
, unsigned long arg
)
1146 mutex_lock(&cciss_mutex
);
1147 ret
= cciss_ioctl(bdev
, mode
, cmd
, arg
);
1148 mutex_unlock(&cciss_mutex
);
1152 #ifdef CONFIG_COMPAT
1154 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1155 unsigned cmd
, unsigned long arg
);
1156 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1157 unsigned cmd
, unsigned long arg
);
1159 static int cciss_compat_ioctl(struct block_device
*bdev
, fmode_t mode
,
1160 unsigned cmd
, unsigned long arg
)
1163 case CCISS_GETPCIINFO
:
1164 case CCISS_GETINTINFO
:
1165 case CCISS_SETINTINFO
:
1166 case CCISS_GETNODENAME
:
1167 case CCISS_SETNODENAME
:
1168 case CCISS_GETHEARTBEAT
:
1169 case CCISS_GETBUSTYPES
:
1170 case CCISS_GETFIRMVER
:
1171 case CCISS_GETDRIVVER
:
1172 case CCISS_REVALIDVOLS
:
1173 case CCISS_DEREGDISK
:
1174 case CCISS_REGNEWDISK
:
1176 case CCISS_RESCANDISK
:
1177 case CCISS_GETLUNINFO
:
1178 return do_ioctl(bdev
, mode
, cmd
, arg
);
1180 case CCISS_PASSTHRU32
:
1181 return cciss_ioctl32_passthru(bdev
, mode
, cmd
, arg
);
1182 case CCISS_BIG_PASSTHRU32
:
1183 return cciss_ioctl32_big_passthru(bdev
, mode
, cmd
, arg
);
1186 return -ENOIOCTLCMD
;
1190 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1191 unsigned cmd
, unsigned long arg
)
1193 IOCTL32_Command_struct __user
*arg32
=
1194 (IOCTL32_Command_struct __user
*) arg
;
1195 IOCTL_Command_struct arg64
;
1196 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
1202 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1203 sizeof(arg64
.LUN_info
));
1205 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1206 sizeof(arg64
.Request
));
1208 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1209 sizeof(arg64
.error_info
));
1210 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1211 err
|= get_user(cp
, &arg32
->buf
);
1212 arg64
.buf
= compat_ptr(cp
);
1213 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1218 err
= do_ioctl(bdev
, mode
, CCISS_PASSTHRU
, (unsigned long)p
);
1222 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1223 sizeof(arg32
->error_info
));
1229 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1230 unsigned cmd
, unsigned long arg
)
1232 BIG_IOCTL32_Command_struct __user
*arg32
=
1233 (BIG_IOCTL32_Command_struct __user
*) arg
;
1234 BIG_IOCTL_Command_struct arg64
;
1235 BIG_IOCTL_Command_struct __user
*p
=
1236 compat_alloc_user_space(sizeof(arg64
));
1240 memset(&arg64
, 0, sizeof(arg64
));
1243 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1244 sizeof(arg64
.LUN_info
));
1246 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1247 sizeof(arg64
.Request
));
1249 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1250 sizeof(arg64
.error_info
));
1251 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1252 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
1253 err
|= get_user(cp
, &arg32
->buf
);
1254 arg64
.buf
= compat_ptr(cp
);
1255 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1260 err
= do_ioctl(bdev
, mode
, CCISS_BIG_PASSTHRU
, (unsigned long)p
);
1264 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1265 sizeof(arg32
->error_info
));
1272 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1274 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1276 if (!drv
->cylinders
)
1279 geo
->heads
= drv
->heads
;
1280 geo
->sectors
= drv
->sectors
;
1281 geo
->cylinders
= drv
->cylinders
;
1285 static void check_ioctl_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
1287 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
1288 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
1289 (void)check_for_unit_attention(h
, c
);
1292 static int cciss_getpciinfo(ctlr_info_t
*h
, void __user
*argp
)
1294 cciss_pci_info_struct pciinfo
;
1298 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
1299 pciinfo
.bus
= h
->pdev
->bus
->number
;
1300 pciinfo
.dev_fn
= h
->pdev
->devfn
;
1301 pciinfo
.board_id
= h
->board_id
;
1302 if (copy_to_user(argp
, &pciinfo
, sizeof(cciss_pci_info_struct
)))
1307 static int cciss_getintinfo(ctlr_info_t
*h
, void __user
*argp
)
1309 cciss_coalint_struct intinfo
;
1313 intinfo
.delay
= readl(&h
->cfgtable
->HostWrite
.CoalIntDelay
);
1314 intinfo
.count
= readl(&h
->cfgtable
->HostWrite
.CoalIntCount
);
1316 (argp
, &intinfo
, sizeof(cciss_coalint_struct
)))
1321 static int cciss_setintinfo(ctlr_info_t
*h
, void __user
*argp
)
1323 cciss_coalint_struct intinfo
;
1324 unsigned long flags
;
1329 if (!capable(CAP_SYS_ADMIN
))
1331 if (copy_from_user(&intinfo
, argp
, sizeof(intinfo
)))
1333 if ((intinfo
.delay
== 0) && (intinfo
.count
== 0))
1335 spin_lock_irqsave(&h
->lock
, flags
);
1336 /* Update the field, and then ring the doorbell */
1337 writel(intinfo
.delay
, &(h
->cfgtable
->HostWrite
.CoalIntDelay
));
1338 writel(intinfo
.count
, &(h
->cfgtable
->HostWrite
.CoalIntCount
));
1339 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1341 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1342 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1344 udelay(1000); /* delay and try again */
1346 spin_unlock_irqrestore(&h
->lock
, flags
);
1347 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1352 static int cciss_getnodename(ctlr_info_t
*h
, void __user
*argp
)
1354 NodeName_type NodeName
;
1359 for (i
= 0; i
< 16; i
++)
1360 NodeName
[i
] = readb(&h
->cfgtable
->ServerName
[i
]);
1361 if (copy_to_user(argp
, NodeName
, sizeof(NodeName_type
)))
1366 static int cciss_setnodename(ctlr_info_t
*h
, void __user
*argp
)
1368 NodeName_type NodeName
;
1369 unsigned long flags
;
1374 if (!capable(CAP_SYS_ADMIN
))
1376 if (copy_from_user(NodeName
, argp
, sizeof(NodeName_type
)))
1378 spin_lock_irqsave(&h
->lock
, flags
);
1379 /* Update the field, and then ring the doorbell */
1380 for (i
= 0; i
< 16; i
++)
1381 writeb(NodeName
[i
], &h
->cfgtable
->ServerName
[i
]);
1382 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1383 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1384 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1386 udelay(1000); /* delay and try again */
1388 spin_unlock_irqrestore(&h
->lock
, flags
);
1389 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1394 static int cciss_getheartbeat(ctlr_info_t
*h
, void __user
*argp
)
1396 Heartbeat_type heartbeat
;
1400 heartbeat
= readl(&h
->cfgtable
->HeartBeat
);
1401 if (copy_to_user(argp
, &heartbeat
, sizeof(Heartbeat_type
)))
1406 static int cciss_getbustypes(ctlr_info_t
*h
, void __user
*argp
)
1408 BusTypes_type BusTypes
;
1412 BusTypes
= readl(&h
->cfgtable
->BusTypes
);
1413 if (copy_to_user(argp
, &BusTypes
, sizeof(BusTypes_type
)))
1418 static int cciss_getfirmver(ctlr_info_t
*h
, void __user
*argp
)
1420 FirmwareVer_type firmware
;
1424 memcpy(firmware
, h
->firm_ver
, 4);
1427 (argp
, firmware
, sizeof(FirmwareVer_type
)))
1432 static int cciss_getdrivver(ctlr_info_t
*h
, void __user
*argp
)
1434 DriverVer_type DriverVer
= DRIVER_VERSION
;
1438 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
1443 static int cciss_getluninfo(ctlr_info_t
*h
,
1444 struct gendisk
*disk
, void __user
*argp
)
1446 LogvolInfo_struct luninfo
;
1447 drive_info_struct
*drv
= get_drv(disk
);
1451 memcpy(&luninfo
.LunID
, drv
->LunID
, sizeof(luninfo
.LunID
));
1452 luninfo
.num_opens
= drv
->usage_count
;
1453 luninfo
.num_parts
= 0;
1454 if (copy_to_user(argp
, &luninfo
, sizeof(LogvolInfo_struct
)))
1459 static int cciss_passthru(ctlr_info_t
*h
, void __user
*argp
)
1461 IOCTL_Command_struct iocommand
;
1462 CommandList_struct
*c
;
1465 DECLARE_COMPLETION_ONSTACK(wait
);
1470 if (!capable(CAP_SYS_RAWIO
))
1474 (&iocommand
, argp
, sizeof(IOCTL_Command_struct
)))
1476 if ((iocommand
.buf_size
< 1) &&
1477 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
1480 if (iocommand
.buf_size
> 0) {
1481 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
1485 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
1486 /* Copy the data into the buffer we created */
1487 if (copy_from_user(buff
, iocommand
.buf
, iocommand
.buf_size
)) {
1492 memset(buff
, 0, iocommand
.buf_size
);
1494 c
= cmd_special_alloc(h
);
1499 /* Fill in the command type */
1500 c
->cmd_type
= CMD_IOCTL_PEND
;
1501 /* Fill in Command Header */
1502 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
1503 if (iocommand
.buf_size
> 0) { /* buffer to fill */
1504 c
->Header
.SGList
= 1;
1505 c
->Header
.SGTotal
= 1;
1506 } else { /* no buffers to fill */
1507 c
->Header
.SGList
= 0;
1508 c
->Header
.SGTotal
= 0;
1510 c
->Header
.LUN
= iocommand
.LUN_info
;
1511 /* use the kernel address the cmd block for tag */
1512 c
->Header
.Tag
.lower
= c
->busaddr
;
1514 /* Fill in Request block */
1515 c
->Request
= iocommand
.Request
;
1517 /* Fill in the scatter gather information */
1518 if (iocommand
.buf_size
> 0) {
1519 temp64
.val
= pci_map_single(h
->pdev
, buff
,
1520 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
1521 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
1522 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
1523 c
->SG
[0].Len
= iocommand
.buf_size
;
1524 c
->SG
[0].Ext
= 0; /* we are not chaining */
1528 enqueue_cmd_and_start_io(h
, c
);
1529 wait_for_completion(&wait
);
1531 /* unlock the buffers from DMA */
1532 temp64
.val32
.lower
= c
->SG
[0].Addr
.lower
;
1533 temp64
.val32
.upper
= c
->SG
[0].Addr
.upper
;
1534 pci_unmap_single(h
->pdev
, (dma_addr_t
) temp64
.val
, iocommand
.buf_size
,
1535 PCI_DMA_BIDIRECTIONAL
);
1536 check_ioctl_unit_attention(h
, c
);
1538 /* Copy the error information out */
1539 iocommand
.error_info
= *(c
->err_info
);
1540 if (copy_to_user(argp
, &iocommand
, sizeof(IOCTL_Command_struct
))) {
1542 cmd_special_free(h
, c
);
1546 if (iocommand
.Request
.Type
.Direction
== XFER_READ
) {
1547 /* Copy the data out of the buffer we created */
1548 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
1550 cmd_special_free(h
, c
);
1555 cmd_special_free(h
, c
);
1559 static int cciss_bigpassthru(ctlr_info_t
*h
, void __user
*argp
)
1561 BIG_IOCTL_Command_struct
*ioc
;
1562 CommandList_struct
*c
;
1563 unsigned char **buff
= NULL
;
1564 int *buff_size
= NULL
;
1569 DECLARE_COMPLETION_ONSTACK(wait
);
1572 BYTE __user
*data_ptr
;
1576 if (!capable(CAP_SYS_RAWIO
))
1578 ioc
= kmalloc(sizeof(*ioc
), GFP_KERNEL
);
1583 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
1587 if ((ioc
->buf_size
< 1) &&
1588 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
1592 /* Check kmalloc limits using all SGs */
1593 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
1597 if (ioc
->buf_size
> ioc
->malloc_size
* MAXSGENTRIES
) {
1601 buff
= kzalloc(MAXSGENTRIES
* sizeof(char *), GFP_KERNEL
);
1606 buff_size
= kmalloc(MAXSGENTRIES
* sizeof(int), GFP_KERNEL
);
1611 left
= ioc
->buf_size
;
1612 data_ptr
= ioc
->buf
;
1614 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
1615 buff_size
[sg_used
] = sz
;
1616 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
1617 if (buff
[sg_used
] == NULL
) {
1621 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
1622 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
1627 memset(buff
[sg_used
], 0, sz
);
1633 c
= cmd_special_alloc(h
);
1638 c
->cmd_type
= CMD_IOCTL_PEND
;
1639 c
->Header
.ReplyQueue
= 0;
1640 c
->Header
.SGList
= sg_used
;
1641 c
->Header
.SGTotal
= sg_used
;
1642 c
->Header
.LUN
= ioc
->LUN_info
;
1643 c
->Header
.Tag
.lower
= c
->busaddr
;
1645 c
->Request
= ioc
->Request
;
1646 for (i
= 0; i
< sg_used
; i
++) {
1647 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
], buff_size
[i
],
1648 PCI_DMA_BIDIRECTIONAL
);
1649 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
1650 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
1651 c
->SG
[i
].Len
= buff_size
[i
];
1652 c
->SG
[i
].Ext
= 0; /* we are not chaining */
1655 enqueue_cmd_and_start_io(h
, c
);
1656 wait_for_completion(&wait
);
1657 /* unlock the buffers from DMA */
1658 for (i
= 0; i
< sg_used
; i
++) {
1659 temp64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1660 temp64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1661 pci_unmap_single(h
->pdev
,
1662 (dma_addr_t
) temp64
.val
, buff_size
[i
],
1663 PCI_DMA_BIDIRECTIONAL
);
1665 check_ioctl_unit_attention(h
, c
);
1666 /* Copy the error information out */
1667 ioc
->error_info
= *(c
->err_info
);
1668 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
1669 cmd_special_free(h
, c
);
1673 if (ioc
->Request
.Type
.Direction
== XFER_READ
) {
1674 /* Copy the data out of the buffer we created */
1675 BYTE __user
*ptr
= ioc
->buf
;
1676 for (i
= 0; i
< sg_used
; i
++) {
1677 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
1678 cmd_special_free(h
, c
);
1682 ptr
+= buff_size
[i
];
1685 cmd_special_free(h
, c
);
1689 for (i
= 0; i
< sg_used
; i
++)
1698 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
1699 unsigned int cmd
, unsigned long arg
)
1701 struct gendisk
*disk
= bdev
->bd_disk
;
1702 ctlr_info_t
*h
= get_host(disk
);
1703 void __user
*argp
= (void __user
*)arg
;
1705 dev_dbg(&h
->pdev
->dev
, "cciss_ioctl: Called with cmd=%x %lx\n",
1708 case CCISS_GETPCIINFO
:
1709 return cciss_getpciinfo(h
, argp
);
1710 case CCISS_GETINTINFO
:
1711 return cciss_getintinfo(h
, argp
);
1712 case CCISS_SETINTINFO
:
1713 return cciss_setintinfo(h
, argp
);
1714 case CCISS_GETNODENAME
:
1715 return cciss_getnodename(h
, argp
);
1716 case CCISS_SETNODENAME
:
1717 return cciss_setnodename(h
, argp
);
1718 case CCISS_GETHEARTBEAT
:
1719 return cciss_getheartbeat(h
, argp
);
1720 case CCISS_GETBUSTYPES
:
1721 return cciss_getbustypes(h
, argp
);
1722 case CCISS_GETFIRMVER
:
1723 return cciss_getfirmver(h
, argp
);
1724 case CCISS_GETDRIVVER
:
1725 return cciss_getdrivver(h
, argp
);
1726 case CCISS_DEREGDISK
:
1728 case CCISS_REVALIDVOLS
:
1729 return rebuild_lun_table(h
, 0, 1);
1730 case CCISS_GETLUNINFO
:
1731 return cciss_getluninfo(h
, disk
, argp
);
1732 case CCISS_PASSTHRU
:
1733 return cciss_passthru(h
, argp
);
1734 case CCISS_BIG_PASSTHRU
:
1735 return cciss_bigpassthru(h
, argp
);
1737 /* scsi_cmd_blk_ioctl handles these, below, though some are not */
1738 /* very meaningful for cciss. SG_IO is the main one people want. */
1740 case SG_GET_VERSION_NUM
:
1741 case SG_SET_TIMEOUT
:
1742 case SG_GET_TIMEOUT
:
1743 case SG_GET_RESERVED_SIZE
:
1744 case SG_SET_RESERVED_SIZE
:
1745 case SG_EMULATED_HOST
:
1747 case SCSI_IOCTL_SEND_COMMAND
:
1748 return scsi_cmd_blk_ioctl(bdev
, mode
, cmd
, argp
);
1750 /* scsi_cmd_blk_ioctl would normally handle these, below, but */
1751 /* they aren't a good fit for cciss, as CD-ROMs are */
1752 /* not supported, and we don't have any bus/target/lun */
1753 /* which we present to the kernel. */
1755 case CDROM_SEND_PACKET
:
1756 case CDROMCLOSETRAY
:
1758 case SCSI_IOCTL_GET_IDLUN
:
1759 case SCSI_IOCTL_GET_BUS_NUMBER
:
1765 static void cciss_check_queues(ctlr_info_t
*h
)
1767 int start_queue
= h
->next_to_run
;
1770 /* check to see if we have maxed out the number of commands that can
1771 * be placed on the queue. If so then exit. We do this check here
1772 * in case the interrupt we serviced was from an ioctl and did not
1773 * free any new commands.
1775 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
)
1778 /* We have room on the queue for more commands. Now we need to queue
1779 * them up. We will also keep track of the next queue to run so
1780 * that every queue gets a chance to be started first.
1782 for (i
= 0; i
< h
->highest_lun
+ 1; i
++) {
1783 int curr_queue
= (start_queue
+ i
) % (h
->highest_lun
+ 1);
1784 /* make sure the disk has been added and the drive is real
1785 * because this can be called from the middle of init_one.
1787 if (!h
->drv
[curr_queue
])
1789 if (!(h
->drv
[curr_queue
]->queue
) ||
1790 !(h
->drv
[curr_queue
]->heads
))
1792 blk_start_queue(h
->gendisk
[curr_queue
]->queue
);
1794 /* check to see if we have maxed out the number of commands
1795 * that can be placed on the queue.
1797 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
) {
1798 if (curr_queue
== start_queue
) {
1800 (start_queue
+ 1) % (h
->highest_lun
+ 1);
1803 h
->next_to_run
= curr_queue
;
1810 static void cciss_softirq_done(struct request
*rq
)
1812 CommandList_struct
*c
= rq
->completion_data
;
1813 ctlr_info_t
*h
= hba
[c
->ctlr
];
1814 SGDescriptor_struct
*curr_sg
= c
->SG
;
1816 unsigned long flags
;
1820 if (c
->Request
.Type
.Direction
== XFER_READ
)
1821 ddir
= PCI_DMA_FROMDEVICE
;
1823 ddir
= PCI_DMA_TODEVICE
;
1825 /* command did not need to be retried */
1826 /* unmap the DMA mapping for all the scatter gather elements */
1827 for (i
= 0; i
< c
->Header
.SGList
; i
++) {
1828 if (curr_sg
[sg_index
].Ext
== CCISS_SG_CHAIN
) {
1829 cciss_unmap_sg_chain_block(h
, c
);
1830 /* Point to the next block */
1831 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
1834 temp64
.val32
.lower
= curr_sg
[sg_index
].Addr
.lower
;
1835 temp64
.val32
.upper
= curr_sg
[sg_index
].Addr
.upper
;
1836 pci_unmap_page(h
->pdev
, temp64
.val
, curr_sg
[sg_index
].Len
,
1841 dev_dbg(&h
->pdev
->dev
, "Done with %p\n", rq
);
1843 /* set the residual count for pc requests */
1844 if (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
1845 rq
->resid_len
= c
->err_info
->ResidualCnt
;
1847 blk_end_request_all(rq
, (rq
->errors
== 0) ? 0 : -EIO
);
1849 spin_lock_irqsave(&h
->lock
, flags
);
1851 cciss_check_queues(h
);
1852 spin_unlock_irqrestore(&h
->lock
, flags
);
1855 static inline void log_unit_to_scsi3addr(ctlr_info_t
*h
,
1856 unsigned char scsi3addr
[], uint32_t log_unit
)
1858 memcpy(scsi3addr
, h
->drv
[log_unit
]->LunID
,
1859 sizeof(h
->drv
[log_unit
]->LunID
));
1862 /* This function gets the SCSI vendor, model, and revision of a logical drive
1863 * via the inquiry page 0. Model, vendor, and rev are set to empty strings if
1864 * they cannot be read.
1866 static void cciss_get_device_descr(ctlr_info_t
*h
, int logvol
,
1867 char *vendor
, char *model
, char *rev
)
1870 InquiryData_struct
*inq_buf
;
1871 unsigned char scsi3addr
[8];
1877 inq_buf
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1881 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1882 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buf
, sizeof(*inq_buf
), 0,
1883 scsi3addr
, TYPE_CMD
);
1885 memcpy(vendor
, &inq_buf
->data_byte
[8], VENDOR_LEN
);
1886 vendor
[VENDOR_LEN
] = '\0';
1887 memcpy(model
, &inq_buf
->data_byte
[16], MODEL_LEN
);
1888 model
[MODEL_LEN
] = '\0';
1889 memcpy(rev
, &inq_buf
->data_byte
[32], REV_LEN
);
1890 rev
[REV_LEN
] = '\0';
1897 /* This function gets the serial number of a logical drive via
1898 * inquiry page 0x83. Serial no. is 16 bytes. If the serial
1899 * number cannot be had, for whatever reason, 16 bytes of 0xff
1900 * are returned instead.
1902 static void cciss_get_serial_no(ctlr_info_t
*h
, int logvol
,
1903 unsigned char *serial_no
, int buflen
)
1905 #define PAGE_83_INQ_BYTES 64
1908 unsigned char scsi3addr
[8];
1912 memset(serial_no
, 0xff, buflen
);
1913 buf
= kzalloc(PAGE_83_INQ_BYTES
, GFP_KERNEL
);
1916 memset(serial_no
, 0, buflen
);
1917 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1918 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, buf
,
1919 PAGE_83_INQ_BYTES
, 0x83, scsi3addr
, TYPE_CMD
);
1921 memcpy(serial_no
, &buf
[8], buflen
);
1927 * cciss_add_disk sets up the block device queue for a logical drive
1929 static int cciss_add_disk(ctlr_info_t
*h
, struct gendisk
*disk
,
1932 disk
->queue
= blk_init_queue(do_cciss_request
, &h
->lock
);
1934 goto init_queue_failure
;
1935 sprintf(disk
->disk_name
, "cciss/c%dd%d", h
->ctlr
, drv_index
);
1936 disk
->major
= h
->major
;
1937 disk
->first_minor
= drv_index
<< NWD_SHIFT
;
1938 disk
->fops
= &cciss_fops
;
1939 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
1941 disk
->private_data
= h
->drv
[drv_index
];
1942 disk
->driverfs_dev
= &h
->drv
[drv_index
]->dev
;
1944 /* Set up queue information */
1945 blk_queue_bounce_limit(disk
->queue
, h
->pdev
->dma_mask
);
1947 /* This is a hardware imposed limit. */
1948 blk_queue_max_segments(disk
->queue
, h
->maxsgentries
);
1950 blk_queue_max_hw_sectors(disk
->queue
, h
->cciss_max_sectors
);
1952 blk_queue_softirq_done(disk
->queue
, cciss_softirq_done
);
1954 disk
->queue
->queuedata
= h
;
1956 blk_queue_logical_block_size(disk
->queue
,
1957 h
->drv
[drv_index
]->block_size
);
1959 /* Make sure all queue data is written out before */
1960 /* setting h->drv[drv_index]->queue, as setting this */
1961 /* allows the interrupt handler to start the queue */
1963 h
->drv
[drv_index
]->queue
= disk
->queue
;
1968 blk_cleanup_queue(disk
->queue
);
1974 /* This function will check the usage_count of the drive to be updated/added.
1975 * If the usage_count is zero and it is a heretofore unknown drive, or,
1976 * the drive's capacity, geometry, or serial number has changed,
1977 * then the drive information will be updated and the disk will be
1978 * re-registered with the kernel. If these conditions don't hold,
1979 * then it will be left alone for the next reboot. The exception to this
1980 * is disk 0 which will always be left registered with the kernel since it
1981 * is also the controller node. Any changes to disk 0 will show up on
1984 static void cciss_update_drive_info(ctlr_info_t
*h
, int drv_index
,
1985 int first_time
, int via_ioctl
)
1987 struct gendisk
*disk
;
1988 InquiryData_struct
*inq_buff
= NULL
;
1989 unsigned int block_size
;
1990 sector_t total_size
;
1991 unsigned long flags
= 0;
1993 drive_info_struct
*drvinfo
;
1995 /* Get information about the disk and modify the driver structure */
1996 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1997 drvinfo
= kzalloc(sizeof(*drvinfo
), GFP_KERNEL
);
1998 if (inq_buff
== NULL
|| drvinfo
== NULL
)
2001 /* testing to see if 16-byte CDBs are already being used */
2002 if (h
->cciss_read
== CCISS_READ_16
) {
2003 cciss_read_capacity_16(h
, drv_index
,
2004 &total_size
, &block_size
);
2007 cciss_read_capacity(h
, drv_index
, &total_size
, &block_size
);
2008 /* if read_capacity returns all F's this volume is >2TB */
2009 /* in size so we switch to 16-byte CDB's for all */
2010 /* read/write ops */
2011 if (total_size
== 0xFFFFFFFFULL
) {
2012 cciss_read_capacity_16(h
, drv_index
,
2013 &total_size
, &block_size
);
2014 h
->cciss_read
= CCISS_READ_16
;
2015 h
->cciss_write
= CCISS_WRITE_16
;
2017 h
->cciss_read
= CCISS_READ_10
;
2018 h
->cciss_write
= CCISS_WRITE_10
;
2022 cciss_geometry_inquiry(h
, drv_index
, total_size
, block_size
,
2024 drvinfo
->block_size
= block_size
;
2025 drvinfo
->nr_blocks
= total_size
+ 1;
2027 cciss_get_device_descr(h
, drv_index
, drvinfo
->vendor
,
2028 drvinfo
->model
, drvinfo
->rev
);
2029 cciss_get_serial_no(h
, drv_index
, drvinfo
->serial_no
,
2030 sizeof(drvinfo
->serial_no
));
2031 /* Save the lunid in case we deregister the disk, below. */
2032 memcpy(drvinfo
->LunID
, h
->drv
[drv_index
]->LunID
,
2033 sizeof(drvinfo
->LunID
));
2035 /* Is it the same disk we already know, and nothing's changed? */
2036 if (h
->drv
[drv_index
]->raid_level
!= -1 &&
2037 ((memcmp(drvinfo
->serial_no
,
2038 h
->drv
[drv_index
]->serial_no
, 16) == 0) &&
2039 drvinfo
->block_size
== h
->drv
[drv_index
]->block_size
&&
2040 drvinfo
->nr_blocks
== h
->drv
[drv_index
]->nr_blocks
&&
2041 drvinfo
->heads
== h
->drv
[drv_index
]->heads
&&
2042 drvinfo
->sectors
== h
->drv
[drv_index
]->sectors
&&
2043 drvinfo
->cylinders
== h
->drv
[drv_index
]->cylinders
))
2044 /* The disk is unchanged, nothing to update */
2047 /* If we get here it's not the same disk, or something's changed,
2048 * so we need to * deregister it, and re-register it, if it's not
2050 * If the disk already exists then deregister it before proceeding
2051 * (unless it's the first disk (for the controller node).
2053 if (h
->drv
[drv_index
]->raid_level
!= -1 && drv_index
!= 0) {
2054 dev_warn(&h
->pdev
->dev
, "disk %d has changed.\n", drv_index
);
2055 spin_lock_irqsave(&h
->lock
, flags
);
2056 h
->drv
[drv_index
]->busy_configuring
= 1;
2057 spin_unlock_irqrestore(&h
->lock
, flags
);
2059 /* deregister_disk sets h->drv[drv_index]->queue = NULL
2060 * which keeps the interrupt handler from starting
2063 ret
= deregister_disk(h
, drv_index
, 0, via_ioctl
);
2066 /* If the disk is in use return */
2070 /* Save the new information from cciss_geometry_inquiry
2071 * and serial number inquiry. If the disk was deregistered
2072 * above, then h->drv[drv_index] will be NULL.
2074 if (h
->drv
[drv_index
] == NULL
) {
2075 drvinfo
->device_initialized
= 0;
2076 h
->drv
[drv_index
] = drvinfo
;
2077 drvinfo
= NULL
; /* so it won't be freed below. */
2079 /* special case for cxd0 */
2080 h
->drv
[drv_index
]->block_size
= drvinfo
->block_size
;
2081 h
->drv
[drv_index
]->nr_blocks
= drvinfo
->nr_blocks
;
2082 h
->drv
[drv_index
]->heads
= drvinfo
->heads
;
2083 h
->drv
[drv_index
]->sectors
= drvinfo
->sectors
;
2084 h
->drv
[drv_index
]->cylinders
= drvinfo
->cylinders
;
2085 h
->drv
[drv_index
]->raid_level
= drvinfo
->raid_level
;
2086 memcpy(h
->drv
[drv_index
]->serial_no
, drvinfo
->serial_no
, 16);
2087 memcpy(h
->drv
[drv_index
]->vendor
, drvinfo
->vendor
,
2089 memcpy(h
->drv
[drv_index
]->model
, drvinfo
->model
, MODEL_LEN
+ 1);
2090 memcpy(h
->drv
[drv_index
]->rev
, drvinfo
->rev
, REV_LEN
+ 1);
2094 disk
= h
->gendisk
[drv_index
];
2095 set_capacity(disk
, h
->drv
[drv_index
]->nr_blocks
);
2097 /* If it's not disk 0 (drv_index != 0)
2098 * or if it was disk 0, but there was previously
2099 * no actual corresponding configured logical drive
2100 * (raid_leve == -1) then we want to update the
2101 * logical drive's information.
2103 if (drv_index
|| first_time
) {
2104 if (cciss_add_disk(h
, disk
, drv_index
) != 0) {
2105 cciss_free_gendisk(h
, drv_index
);
2106 cciss_free_drive_info(h
, drv_index
);
2107 dev_warn(&h
->pdev
->dev
, "could not update disk %d\n",
2118 dev_err(&h
->pdev
->dev
, "out of memory\n");
2122 /* This function will find the first index of the controllers drive array
2123 * that has a null drv pointer and allocate the drive info struct and
2124 * will return that index This is where new drives will be added.
2125 * If the index to be returned is greater than the highest_lun index for
2126 * the controller then highest_lun is set * to this new index.
2127 * If there are no available indexes or if tha allocation fails, then -1
2128 * is returned. * "controller_node" is used to know if this is a real
2129 * logical drive, or just the controller node, which determines if this
2130 * counts towards highest_lun.
2132 static int cciss_alloc_drive_info(ctlr_info_t
*h
, int controller_node
)
2135 drive_info_struct
*drv
;
2137 /* Search for an empty slot for our drive info */
2138 for (i
= 0; i
< CISS_MAX_LUN
; i
++) {
2140 /* if not cxd0 case, and it's occupied, skip it. */
2141 if (h
->drv
[i
] && i
!= 0)
2144 * If it's cxd0 case, and drv is alloc'ed already, and a
2145 * disk is configured there, skip it.
2147 if (i
== 0 && h
->drv
[i
] && h
->drv
[i
]->raid_level
!= -1)
2151 * We've found an empty slot. Update highest_lun
2152 * provided this isn't just the fake cxd0 controller node.
2154 if (i
> h
->highest_lun
&& !controller_node
)
2157 /* If adding a real disk at cxd0, and it's already alloc'ed */
2158 if (i
== 0 && h
->drv
[i
] != NULL
)
2162 * Found an empty slot, not already alloc'ed. Allocate it.
2163 * Mark it with raid_level == -1, so we know it's new later on.
2165 drv
= kzalloc(sizeof(*drv
), GFP_KERNEL
);
2168 drv
->raid_level
= -1; /* so we know it's new */
2175 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
)
2177 kfree(h
->drv
[drv_index
]);
2178 h
->drv
[drv_index
] = NULL
;
2181 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
)
2183 put_disk(h
->gendisk
[drv_index
]);
2184 h
->gendisk
[drv_index
] = NULL
;
2187 /* cciss_add_gendisk finds a free hba[]->drv structure
2188 * and allocates a gendisk if needed, and sets the lunid
2189 * in the drvinfo structure. It returns the index into
2190 * the ->drv[] array, or -1 if none are free.
2191 * is_controller_node indicates whether highest_lun should
2192 * count this disk, or if it's only being added to provide
2193 * a means to talk to the controller in case no logical
2194 * drives have yet been configured.
2196 static int cciss_add_gendisk(ctlr_info_t
*h
, unsigned char lunid
[],
2197 int controller_node
)
2201 drv_index
= cciss_alloc_drive_info(h
, controller_node
);
2202 if (drv_index
== -1)
2205 /*Check if the gendisk needs to be allocated */
2206 if (!h
->gendisk
[drv_index
]) {
2207 h
->gendisk
[drv_index
] =
2208 alloc_disk(1 << NWD_SHIFT
);
2209 if (!h
->gendisk
[drv_index
]) {
2210 dev_err(&h
->pdev
->dev
,
2211 "could not allocate a new disk %d\n",
2213 goto err_free_drive_info
;
2216 memcpy(h
->drv
[drv_index
]->LunID
, lunid
,
2217 sizeof(h
->drv
[drv_index
]->LunID
));
2218 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
2220 /* Don't need to mark this busy because nobody */
2221 /* else knows about this disk yet to contend */
2222 /* for access to it. */
2223 h
->drv
[drv_index
]->busy_configuring
= 0;
2228 cciss_free_gendisk(h
, drv_index
);
2229 err_free_drive_info
:
2230 cciss_free_drive_info(h
, drv_index
);
2234 /* This is for the special case of a controller which
2235 * has no logical drives. In this case, we still need
2236 * to register a disk so the controller can be accessed
2237 * by the Array Config Utility.
2239 static void cciss_add_controller_node(ctlr_info_t
*h
)
2241 struct gendisk
*disk
;
2244 if (h
->gendisk
[0] != NULL
) /* already did this? Then bail. */
2247 drv_index
= cciss_add_gendisk(h
, CTLR_LUNID
, 1);
2248 if (drv_index
== -1)
2250 h
->drv
[drv_index
]->block_size
= 512;
2251 h
->drv
[drv_index
]->nr_blocks
= 0;
2252 h
->drv
[drv_index
]->heads
= 0;
2253 h
->drv
[drv_index
]->sectors
= 0;
2254 h
->drv
[drv_index
]->cylinders
= 0;
2255 h
->drv
[drv_index
]->raid_level
= -1;
2256 memset(h
->drv
[drv_index
]->serial_no
, 0, 16);
2257 disk
= h
->gendisk
[drv_index
];
2258 if (cciss_add_disk(h
, disk
, drv_index
) == 0)
2260 cciss_free_gendisk(h
, drv_index
);
2261 cciss_free_drive_info(h
, drv_index
);
2263 dev_warn(&h
->pdev
->dev
, "could not add disk 0.\n");
2267 /* This function will add and remove logical drives from the Logical
2268 * drive array of the controller and maintain persistency of ordering
2269 * so that mount points are preserved until the next reboot. This allows
2270 * for the removal of logical drives in the middle of the drive array
2271 * without a re-ordering of those drives.
2273 * h = The controller to perform the operations on
2275 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
,
2279 ReportLunData_struct
*ld_buff
= NULL
;
2285 unsigned char lunid
[8] = CTLR_LUNID
;
2286 unsigned long flags
;
2288 if (!capable(CAP_SYS_RAWIO
))
2291 /* Set busy_configuring flag for this operation */
2292 spin_lock_irqsave(&h
->lock
, flags
);
2293 if (h
->busy_configuring
) {
2294 spin_unlock_irqrestore(&h
->lock
, flags
);
2297 h
->busy_configuring
= 1;
2298 spin_unlock_irqrestore(&h
->lock
, flags
);
2300 ld_buff
= kzalloc(sizeof(ReportLunData_struct
), GFP_KERNEL
);
2301 if (ld_buff
== NULL
)
2304 return_code
= sendcmd_withirq(h
, CISS_REPORT_LOG
, ld_buff
,
2305 sizeof(ReportLunData_struct
),
2306 0, CTLR_LUNID
, TYPE_CMD
);
2308 if (return_code
== IO_OK
)
2309 listlength
= be32_to_cpu(*(__be32
*) ld_buff
->LUNListLength
);
2310 else { /* reading number of logical volumes failed */
2311 dev_warn(&h
->pdev
->dev
,
2312 "report logical volume command failed\n");
2317 num_luns
= listlength
/ 8; /* 8 bytes per entry */
2318 if (num_luns
> CISS_MAX_LUN
) {
2319 num_luns
= CISS_MAX_LUN
;
2320 dev_warn(&h
->pdev
->dev
, "more luns configured"
2321 " on controller than can be handled by"
2326 cciss_add_controller_node(h
);
2328 /* Compare controller drive array to driver's drive array
2329 * to see if any drives are missing on the controller due
2330 * to action of Array Config Utility (user deletes drive)
2331 * and deregister logical drives which have disappeared.
2333 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2337 /* skip holes in the array from already deleted drives */
2338 if (h
->drv
[i
] == NULL
)
2341 for (j
= 0; j
< num_luns
; j
++) {
2342 memcpy(lunid
, &ld_buff
->LUN
[j
][0], sizeof(lunid
));
2343 if (memcmp(h
->drv
[i
]->LunID
, lunid
,
2344 sizeof(lunid
)) == 0) {
2350 /* Deregister it from the OS, it's gone. */
2351 spin_lock_irqsave(&h
->lock
, flags
);
2352 h
->drv
[i
]->busy_configuring
= 1;
2353 spin_unlock_irqrestore(&h
->lock
, flags
);
2354 return_code
= deregister_disk(h
, i
, 1, via_ioctl
);
2355 if (h
->drv
[i
] != NULL
)
2356 h
->drv
[i
]->busy_configuring
= 0;
2360 /* Compare controller drive array to driver's drive array.
2361 * Check for updates in the drive information and any new drives
2362 * on the controller due to ACU adding logical drives, or changing
2363 * a logical drive's size, etc. Reregister any new/changed drives
2365 for (i
= 0; i
< num_luns
; i
++) {
2370 memcpy(lunid
, &ld_buff
->LUN
[i
][0], sizeof(lunid
));
2371 /* Find if the LUN is already in the drive array
2372 * of the driver. If so then update its info
2373 * if not in use. If it does not exist then find
2374 * the first free index and add it.
2376 for (j
= 0; j
<= h
->highest_lun
; j
++) {
2377 if (h
->drv
[j
] != NULL
&&
2378 memcmp(h
->drv
[j
]->LunID
, lunid
,
2379 sizeof(h
->drv
[j
]->LunID
)) == 0) {
2386 /* check if the drive was found already in the array */
2388 drv_index
= cciss_add_gendisk(h
, lunid
, 0);
2389 if (drv_index
== -1)
2392 cciss_update_drive_info(h
, drv_index
, first_time
, via_ioctl
);
2397 h
->busy_configuring
= 0;
2398 /* We return -1 here to tell the ACU that we have registered/updated
2399 * all of the drives that we can and to keep it from calling us
2404 dev_err(&h
->pdev
->dev
, "out of memory\n");
2405 h
->busy_configuring
= 0;
2409 static void cciss_clear_drive_info(drive_info_struct
*drive_info
)
2411 /* zero out the disk size info */
2412 drive_info
->nr_blocks
= 0;
2413 drive_info
->block_size
= 0;
2414 drive_info
->heads
= 0;
2415 drive_info
->sectors
= 0;
2416 drive_info
->cylinders
= 0;
2417 drive_info
->raid_level
= -1;
2418 memset(drive_info
->serial_no
, 0, sizeof(drive_info
->serial_no
));
2419 memset(drive_info
->model
, 0, sizeof(drive_info
->model
));
2420 memset(drive_info
->rev
, 0, sizeof(drive_info
->rev
));
2421 memset(drive_info
->vendor
, 0, sizeof(drive_info
->vendor
));
2423 * don't clear the LUNID though, we need to remember which
2428 /* This function will deregister the disk and it's queue from the
2429 * kernel. It must be called with the controller lock held and the
2430 * drv structures busy_configuring flag set. It's parameters are:
2432 * disk = This is the disk to be deregistered
2433 * drv = This is the drive_info_struct associated with the disk to be
2434 * deregistered. It contains information about the disk used
2436 * clear_all = This flag determines whether or not the disk information
2437 * is going to be completely cleared out and the highest_lun
2438 * reset. Sometimes we want to clear out information about
2439 * the disk in preparation for re-adding it. In this case
2440 * the highest_lun should be left unchanged and the LunID
2441 * should not be cleared.
2443 * This indicates whether we've reached this path via ioctl.
2444 * This affects the maximum usage count allowed for c0d0 to be messed with.
2445 * If this path is reached via ioctl(), then the max_usage_count will
2446 * be 1, as the process calling ioctl() has got to have the device open.
2447 * If we get here via sysfs, then the max usage count will be zero.
2449 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
2450 int clear_all
, int via_ioctl
)
2453 struct gendisk
*disk
;
2454 drive_info_struct
*drv
;
2455 int recalculate_highest_lun
;
2457 if (!capable(CAP_SYS_RAWIO
))
2460 drv
= h
->drv
[drv_index
];
2461 disk
= h
->gendisk
[drv_index
];
2463 /* make sure logical volume is NOT is use */
2464 if (clear_all
|| (h
->gendisk
[0] == disk
)) {
2465 if (drv
->usage_count
> via_ioctl
)
2467 } else if (drv
->usage_count
> 0)
2470 recalculate_highest_lun
= (drv
== h
->drv
[h
->highest_lun
]);
2472 /* invalidate the devices and deregister the disk. If it is disk
2473 * zero do not deregister it but just zero out it's values. This
2474 * allows us to delete disk zero but keep the controller registered.
2476 if (h
->gendisk
[0] != disk
) {
2477 struct request_queue
*q
= disk
->queue
;
2478 if (disk
->flags
& GENHD_FL_UP
) {
2479 cciss_destroy_ld_sysfs_entry(h
, drv_index
, 0);
2483 blk_cleanup_queue(q
);
2484 /* If clear_all is set then we are deleting the logical
2485 * drive, not just refreshing its info. For drives
2486 * other than disk 0 we will call put_disk. We do not
2487 * do this for disk 0 as we need it to be able to
2488 * configure the controller.
2491 /* This isn't pretty, but we need to find the
2492 * disk in our array and NULL our the pointer.
2493 * This is so that we will call alloc_disk if
2494 * this index is used again later.
2496 for (i
=0; i
< CISS_MAX_LUN
; i
++){
2497 if (h
->gendisk
[i
] == disk
) {
2498 h
->gendisk
[i
] = NULL
;
2505 set_capacity(disk
, 0);
2506 cciss_clear_drive_info(drv
);
2511 /* if it was the last disk, find the new hightest lun */
2512 if (clear_all
&& recalculate_highest_lun
) {
2513 int newhighest
= -1;
2514 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2515 /* if the disk has size > 0, it is available */
2516 if (h
->drv
[i
] && h
->drv
[i
]->heads
)
2519 h
->highest_lun
= newhighest
;
2524 static int fill_cmd(ctlr_info_t
*h
, CommandList_struct
*c
, __u8 cmd
, void *buff
,
2525 size_t size
, __u8 page_code
, unsigned char *scsi3addr
,
2528 u64bit buff_dma_handle
;
2531 c
->cmd_type
= CMD_IOCTL_PEND
;
2532 c
->Header
.ReplyQueue
= 0;
2534 c
->Header
.SGList
= 1;
2535 c
->Header
.SGTotal
= 1;
2537 c
->Header
.SGList
= 0;
2538 c
->Header
.SGTotal
= 0;
2540 c
->Header
.Tag
.lower
= c
->busaddr
;
2541 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2543 c
->Request
.Type
.Type
= cmd_type
;
2544 if (cmd_type
== TYPE_CMD
) {
2547 /* are we trying to read a vital product page */
2548 if (page_code
!= 0) {
2549 c
->Request
.CDB
[1] = 0x01;
2550 c
->Request
.CDB
[2] = page_code
;
2552 c
->Request
.CDBLen
= 6;
2553 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2554 c
->Request
.Type
.Direction
= XFER_READ
;
2555 c
->Request
.Timeout
= 0;
2556 c
->Request
.CDB
[0] = CISS_INQUIRY
;
2557 c
->Request
.CDB
[4] = size
& 0xFF;
2559 case CISS_REPORT_LOG
:
2560 case CISS_REPORT_PHYS
:
2561 /* Talking to controller so It's a physical command
2562 mode = 00 target = 0. Nothing to write.
2564 c
->Request
.CDBLen
= 12;
2565 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2566 c
->Request
.Type
.Direction
= XFER_READ
;
2567 c
->Request
.Timeout
= 0;
2568 c
->Request
.CDB
[0] = cmd
;
2569 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2570 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2571 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2572 c
->Request
.CDB
[9] = size
& 0xFF;
2575 case CCISS_READ_CAPACITY
:
2576 c
->Request
.CDBLen
= 10;
2577 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2578 c
->Request
.Type
.Direction
= XFER_READ
;
2579 c
->Request
.Timeout
= 0;
2580 c
->Request
.CDB
[0] = cmd
;
2582 case CCISS_READ_CAPACITY_16
:
2583 c
->Request
.CDBLen
= 16;
2584 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2585 c
->Request
.Type
.Direction
= XFER_READ
;
2586 c
->Request
.Timeout
= 0;
2587 c
->Request
.CDB
[0] = cmd
;
2588 c
->Request
.CDB
[1] = 0x10;
2589 c
->Request
.CDB
[10] = (size
>> 24) & 0xFF;
2590 c
->Request
.CDB
[11] = (size
>> 16) & 0xFF;
2591 c
->Request
.CDB
[12] = (size
>> 8) & 0xFF;
2592 c
->Request
.CDB
[13] = size
& 0xFF;
2593 c
->Request
.Timeout
= 0;
2594 c
->Request
.CDB
[0] = cmd
;
2596 case CCISS_CACHE_FLUSH
:
2597 c
->Request
.CDBLen
= 12;
2598 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2599 c
->Request
.Type
.Direction
= XFER_WRITE
;
2600 c
->Request
.Timeout
= 0;
2601 c
->Request
.CDB
[0] = BMIC_WRITE
;
2602 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2603 c
->Request
.CDB
[7] = (size
>> 8) & 0xFF;
2604 c
->Request
.CDB
[8] = size
& 0xFF;
2606 case TEST_UNIT_READY
:
2607 c
->Request
.CDBLen
= 6;
2608 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2609 c
->Request
.Type
.Direction
= XFER_NONE
;
2610 c
->Request
.Timeout
= 0;
2613 dev_warn(&h
->pdev
->dev
, "Unknown Command 0x%c\n", cmd
);
2616 } else if (cmd_type
== TYPE_MSG
) {
2618 case CCISS_ABORT_MSG
:
2619 c
->Request
.CDBLen
= 12;
2620 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2621 c
->Request
.Type
.Direction
= XFER_WRITE
;
2622 c
->Request
.Timeout
= 0;
2623 c
->Request
.CDB
[0] = cmd
; /* abort */
2624 c
->Request
.CDB
[1] = 0; /* abort a command */
2625 /* buff contains the tag of the command to abort */
2626 memcpy(&c
->Request
.CDB
[4], buff
, 8);
2628 case CCISS_RESET_MSG
:
2629 c
->Request
.CDBLen
= 16;
2630 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2631 c
->Request
.Type
.Direction
= XFER_NONE
;
2632 c
->Request
.Timeout
= 0;
2633 memset(&c
->Request
.CDB
[0], 0, sizeof(c
->Request
.CDB
));
2634 c
->Request
.CDB
[0] = cmd
; /* reset */
2635 c
->Request
.CDB
[1] = CCISS_RESET_TYPE_TARGET
;
2637 case CCISS_NOOP_MSG
:
2638 c
->Request
.CDBLen
= 1;
2639 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2640 c
->Request
.Type
.Direction
= XFER_WRITE
;
2641 c
->Request
.Timeout
= 0;
2642 c
->Request
.CDB
[0] = cmd
;
2645 dev_warn(&h
->pdev
->dev
,
2646 "unknown message type %d\n", cmd
);
2650 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2653 /* Fill in the scatter gather information */
2655 buff_dma_handle
.val
= (__u64
) pci_map_single(h
->pdev
,
2657 PCI_DMA_BIDIRECTIONAL
);
2658 c
->SG
[0].Addr
.lower
= buff_dma_handle
.val32
.lower
;
2659 c
->SG
[0].Addr
.upper
= buff_dma_handle
.val32
.upper
;
2660 c
->SG
[0].Len
= size
;
2661 c
->SG
[0].Ext
= 0; /* we are not chaining */
2666 static int __devinit
cciss_send_reset(ctlr_info_t
*h
, unsigned char *scsi3addr
,
2669 CommandList_struct
*c
;
2675 return_status
= fill_cmd(h
, c
, CCISS_RESET_MSG
, NULL
, 0, 0,
2676 CTLR_LUNID
, TYPE_MSG
);
2677 c
->Request
.CDB
[1] = reset_type
; /* fill_cmd defaults to target reset */
2678 if (return_status
!= IO_OK
) {
2679 cmd_special_free(h
, c
);
2680 return return_status
;
2683 enqueue_cmd_and_start_io(h
, c
);
2684 /* Don't wait for completion, the reset won't complete. Don't free
2685 * the command either. This is the last command we will send before
2686 * re-initializing everything, so it doesn't matter and won't leak.
2691 static int check_target_status(ctlr_info_t
*h
, CommandList_struct
*c
)
2693 switch (c
->err_info
->ScsiStatus
) {
2696 case SAM_STAT_CHECK_CONDITION
:
2697 switch (0xf & c
->err_info
->SenseInfo
[2]) {
2698 case 0: return IO_OK
; /* no sense */
2699 case 1: return IO_OK
; /* recovered error */
2701 if (check_for_unit_attention(h
, c
))
2702 return IO_NEEDS_RETRY
;
2703 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x "
2704 "check condition, sense key = 0x%02x\n",
2705 c
->Request
.CDB
[0], c
->err_info
->SenseInfo
[2]);
2709 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x"
2710 "scsi status = 0x%02x\n",
2711 c
->Request
.CDB
[0], c
->err_info
->ScsiStatus
);
2717 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
)
2719 int return_status
= IO_OK
;
2721 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2724 switch (c
->err_info
->CommandStatus
) {
2725 case CMD_TARGET_STATUS
:
2726 return_status
= check_target_status(h
, c
);
2728 case CMD_DATA_UNDERRUN
:
2729 case CMD_DATA_OVERRUN
:
2730 /* expected for inquiry and report lun commands */
2733 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x is "
2734 "reported invalid\n", c
->Request
.CDB
[0]);
2735 return_status
= IO_ERROR
;
2737 case CMD_PROTOCOL_ERR
:
2738 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x has "
2739 "protocol error\n", c
->Request
.CDB
[0]);
2740 return_status
= IO_ERROR
;
2742 case CMD_HARDWARE_ERR
:
2743 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2744 " hardware error\n", c
->Request
.CDB
[0]);
2745 return_status
= IO_ERROR
;
2747 case CMD_CONNECTION_LOST
:
2748 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2749 "connection lost\n", c
->Request
.CDB
[0]);
2750 return_status
= IO_ERROR
;
2753 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x was "
2754 "aborted\n", c
->Request
.CDB
[0]);
2755 return_status
= IO_ERROR
;
2757 case CMD_ABORT_FAILED
:
2758 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x reports "
2759 "abort failed\n", c
->Request
.CDB
[0]);
2760 return_status
= IO_ERROR
;
2762 case CMD_UNSOLICITED_ABORT
:
2763 dev_warn(&h
->pdev
->dev
, "unsolicited abort 0x%02x\n",
2765 return_status
= IO_NEEDS_RETRY
;
2767 case CMD_UNABORTABLE
:
2768 dev_warn(&h
->pdev
->dev
, "cmd unabortable\n");
2769 return_status
= IO_ERROR
;
2772 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x returned "
2773 "unknown status %x\n", c
->Request
.CDB
[0],
2774 c
->err_info
->CommandStatus
);
2775 return_status
= IO_ERROR
;
2777 return return_status
;
2780 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
2783 DECLARE_COMPLETION_ONSTACK(wait
);
2784 u64bit buff_dma_handle
;
2785 int return_status
= IO_OK
;
2789 enqueue_cmd_and_start_io(h
, c
);
2791 wait_for_completion(&wait
);
2793 if (c
->err_info
->CommandStatus
== 0 || !attempt_retry
)
2796 return_status
= process_sendcmd_error(h
, c
);
2798 if (return_status
== IO_NEEDS_RETRY
&&
2799 c
->retry_count
< MAX_CMD_RETRIES
) {
2800 dev_warn(&h
->pdev
->dev
, "retrying 0x%02x\n",
2803 /* erase the old error information */
2804 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
2805 return_status
= IO_OK
;
2806 INIT_COMPLETION(wait
);
2811 /* unlock the buffers from DMA */
2812 buff_dma_handle
.val32
.lower
= c
->SG
[0].Addr
.lower
;
2813 buff_dma_handle
.val32
.upper
= c
->SG
[0].Addr
.upper
;
2814 pci_unmap_single(h
->pdev
, (dma_addr_t
) buff_dma_handle
.val
,
2815 c
->SG
[0].Len
, PCI_DMA_BIDIRECTIONAL
);
2816 return return_status
;
2819 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
2820 __u8 page_code
, unsigned char scsi3addr
[],
2823 CommandList_struct
*c
;
2826 c
= cmd_special_alloc(h
);
2829 return_status
= fill_cmd(h
, c
, cmd
, buff
, size
, page_code
,
2830 scsi3addr
, cmd_type
);
2831 if (return_status
== IO_OK
)
2832 return_status
= sendcmd_withirq_core(h
, c
, 1);
2834 cmd_special_free(h
, c
);
2835 return return_status
;
2838 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
2839 sector_t total_size
,
2840 unsigned int block_size
,
2841 InquiryData_struct
*inq_buff
,
2842 drive_info_struct
*drv
)
2846 unsigned char scsi3addr
[8];
2848 memset(inq_buff
, 0, sizeof(InquiryData_struct
));
2849 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2850 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
2851 sizeof(*inq_buff
), 0xC1, scsi3addr
, TYPE_CMD
);
2852 if (return_code
== IO_OK
) {
2853 if (inq_buff
->data_byte
[8] == 0xFF) {
2854 dev_warn(&h
->pdev
->dev
,
2855 "reading geometry failed, volume "
2856 "does not support reading geometry\n");
2858 drv
->sectors
= 32; /* Sectors per track */
2859 drv
->cylinders
= total_size
+ 1;
2860 drv
->raid_level
= RAID_UNKNOWN
;
2862 drv
->heads
= inq_buff
->data_byte
[6];
2863 drv
->sectors
= inq_buff
->data_byte
[7];
2864 drv
->cylinders
= (inq_buff
->data_byte
[4] & 0xff) << 8;
2865 drv
->cylinders
+= inq_buff
->data_byte
[5];
2866 drv
->raid_level
= inq_buff
->data_byte
[8];
2868 drv
->block_size
= block_size
;
2869 drv
->nr_blocks
= total_size
+ 1;
2870 t
= drv
->heads
* drv
->sectors
;
2872 sector_t real_size
= total_size
+ 1;
2873 unsigned long rem
= sector_div(real_size
, t
);
2876 drv
->cylinders
= real_size
;
2878 } else { /* Get geometry failed */
2879 dev_warn(&h
->pdev
->dev
, "reading geometry failed\n");
2884 cciss_read_capacity(ctlr_info_t
*h
, int logvol
, sector_t
*total_size
,
2885 unsigned int *block_size
)
2887 ReadCapdata_struct
*buf
;
2889 unsigned char scsi3addr
[8];
2891 buf
= kzalloc(sizeof(ReadCapdata_struct
), GFP_KERNEL
);
2893 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2897 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2898 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY
, buf
,
2899 sizeof(ReadCapdata_struct
), 0, scsi3addr
, TYPE_CMD
);
2900 if (return_code
== IO_OK
) {
2901 *total_size
= be32_to_cpu(*(__be32
*) buf
->total_size
);
2902 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2903 } else { /* read capacity command failed */
2904 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2906 *block_size
= BLOCK_SIZE
;
2911 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
2912 sector_t
*total_size
, unsigned int *block_size
)
2914 ReadCapdata_struct_16
*buf
;
2916 unsigned char scsi3addr
[8];
2918 buf
= kzalloc(sizeof(ReadCapdata_struct_16
), GFP_KERNEL
);
2920 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2924 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2925 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY_16
,
2926 buf
, sizeof(ReadCapdata_struct_16
),
2927 0, scsi3addr
, TYPE_CMD
);
2928 if (return_code
== IO_OK
) {
2929 *total_size
= be64_to_cpu(*(__be64
*) buf
->total_size
);
2930 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2931 } else { /* read capacity command failed */
2932 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2934 *block_size
= BLOCK_SIZE
;
2936 dev_info(&h
->pdev
->dev
, " blocks= %llu block_size= %d\n",
2937 (unsigned long long)*total_size
+1, *block_size
);
2941 static int cciss_revalidate(struct gendisk
*disk
)
2943 ctlr_info_t
*h
= get_host(disk
);
2944 drive_info_struct
*drv
= get_drv(disk
);
2947 unsigned int block_size
;
2948 sector_t total_size
;
2949 InquiryData_struct
*inq_buff
= NULL
;
2951 for (logvol
= 0; logvol
<= h
->highest_lun
; logvol
++) {
2952 if (!h
->drv
[logvol
])
2954 if (memcmp(h
->drv
[logvol
]->LunID
, drv
->LunID
,
2955 sizeof(drv
->LunID
)) == 0) {
2964 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
2965 if (inq_buff
== NULL
) {
2966 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2969 if (h
->cciss_read
== CCISS_READ_10
) {
2970 cciss_read_capacity(h
, logvol
,
2971 &total_size
, &block_size
);
2973 cciss_read_capacity_16(h
, logvol
,
2974 &total_size
, &block_size
);
2976 cciss_geometry_inquiry(h
, logvol
, total_size
, block_size
,
2979 blk_queue_logical_block_size(drv
->queue
, drv
->block_size
);
2980 set_capacity(disk
, drv
->nr_blocks
);
2987 * Map (physical) PCI mem into (virtual) kernel space
2989 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
2991 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
2992 ulong page_offs
= ((ulong
) base
) - page_base
;
2993 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
2995 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
2999 * Takes jobs of the Q and sends them to the hardware, then puts it on
3000 * the Q to wait for completion.
3002 static void start_io(ctlr_info_t
*h
)
3004 CommandList_struct
*c
;
3006 while (!list_empty(&h
->reqQ
)) {
3007 c
= list_entry(h
->reqQ
.next
, CommandList_struct
, list
);
3008 /* can't do anything if fifo is full */
3009 if ((h
->access
.fifo_full(h
))) {
3010 dev_warn(&h
->pdev
->dev
, "fifo full\n");
3014 /* Get the first entry from the Request Q */
3018 /* Tell the controller execute command */
3019 h
->access
.submit_command(h
, c
);
3021 /* Put job onto the completed Q */
3026 /* Assumes that h->lock is held. */
3027 /* Zeros out the error record and then resends the command back */
3028 /* to the controller */
3029 static inline void resend_cciss_cmd(ctlr_info_t
*h
, CommandList_struct
*c
)
3031 /* erase the old error information */
3032 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
3034 /* add it to software queue and then send it to the controller */
3037 if (h
->Qdepth
> h
->maxQsinceinit
)
3038 h
->maxQsinceinit
= h
->Qdepth
;
3043 static inline unsigned int make_status_bytes(unsigned int scsi_status_byte
,
3044 unsigned int msg_byte
, unsigned int host_byte
,
3045 unsigned int driver_byte
)
3047 /* inverse of macros in scsi.h */
3048 return (scsi_status_byte
& 0xff) |
3049 ((msg_byte
& 0xff) << 8) |
3050 ((host_byte
& 0xff) << 16) |
3051 ((driver_byte
& 0xff) << 24);
3054 static inline int evaluate_target_status(ctlr_info_t
*h
,
3055 CommandList_struct
*cmd
, int *retry_cmd
)
3057 unsigned char sense_key
;
3058 unsigned char status_byte
, msg_byte
, host_byte
, driver_byte
;
3062 /* If we get in here, it means we got "target status", that is, scsi status */
3063 status_byte
= cmd
->err_info
->ScsiStatus
;
3064 driver_byte
= DRIVER_OK
;
3065 msg_byte
= cmd
->err_info
->CommandStatus
; /* correct? seems too device specific */
3067 if (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
3068 host_byte
= DID_PASSTHROUGH
;
3072 error_value
= make_status_bytes(status_byte
, msg_byte
,
3073 host_byte
, driver_byte
);
3075 if (cmd
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
) {
3076 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
)
3077 dev_warn(&h
->pdev
->dev
, "cmd %p "
3078 "has SCSI Status 0x%x\n",
3079 cmd
, cmd
->err_info
->ScsiStatus
);
3083 /* check the sense key */
3084 sense_key
= 0xf & cmd
->err_info
->SenseInfo
[2];
3085 /* no status or recovered error */
3086 if (((sense_key
== 0x0) || (sense_key
== 0x1)) &&
3087 (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
))
3090 if (check_for_unit_attention(h
, cmd
)) {
3091 *retry_cmd
= !(cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
);
3095 /* Not SG_IO or similar? */
3096 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
) {
3097 if (error_value
!= 0)
3098 dev_warn(&h
->pdev
->dev
, "cmd %p has CHECK CONDITION"
3099 " sense key = 0x%x\n", cmd
, sense_key
);
3103 /* SG_IO or similar, copy sense data back */
3104 if (cmd
->rq
->sense
) {
3105 if (cmd
->rq
->sense_len
> cmd
->err_info
->SenseLen
)
3106 cmd
->rq
->sense_len
= cmd
->err_info
->SenseLen
;
3107 memcpy(cmd
->rq
->sense
, cmd
->err_info
->SenseInfo
,
3108 cmd
->rq
->sense_len
);
3110 cmd
->rq
->sense_len
= 0;
3115 /* checks the status of the job and calls complete buffers to mark all
3116 * buffers for the completed job. Note that this function does not need
3117 * to hold the hba/queue lock.
3119 static inline void complete_command(ctlr_info_t
*h
, CommandList_struct
*cmd
,
3123 struct request
*rq
= cmd
->rq
;
3128 rq
->errors
= make_status_bytes(0, 0, 0, DRIVER_TIMEOUT
);
3130 if (cmd
->err_info
->CommandStatus
== 0) /* no error has occurred */
3131 goto after_error_processing
;
3133 switch (cmd
->err_info
->CommandStatus
) {
3134 case CMD_TARGET_STATUS
:
3135 rq
->errors
= evaluate_target_status(h
, cmd
, &retry_cmd
);
3137 case CMD_DATA_UNDERRUN
:
3138 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
) {
3139 dev_warn(&h
->pdev
->dev
, "cmd %p has"
3140 " completed with data underrun "
3142 cmd
->rq
->resid_len
= cmd
->err_info
->ResidualCnt
;
3145 case CMD_DATA_OVERRUN
:
3146 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
)
3147 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has"
3148 " completed with data overrun "
3152 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p is "
3153 "reported invalid\n", cmd
);
3154 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3155 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3156 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3157 DID_PASSTHROUGH
: DID_ERROR
);
3159 case CMD_PROTOCOL_ERR
:
3160 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has "
3161 "protocol error\n", cmd
);
3162 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3163 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3164 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3165 DID_PASSTHROUGH
: DID_ERROR
);
3167 case CMD_HARDWARE_ERR
:
3168 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3169 " hardware error\n", cmd
);
3170 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3171 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3172 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3173 DID_PASSTHROUGH
: DID_ERROR
);
3175 case CMD_CONNECTION_LOST
:
3176 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3177 "connection lost\n", cmd
);
3178 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3179 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3180 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3181 DID_PASSTHROUGH
: DID_ERROR
);
3184 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p was "
3186 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3187 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3188 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3189 DID_PASSTHROUGH
: DID_ABORT
);
3191 case CMD_ABORT_FAILED
:
3192 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p reports "
3193 "abort failed\n", cmd
);
3194 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3195 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3196 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3197 DID_PASSTHROUGH
: DID_ERROR
);
3199 case CMD_UNSOLICITED_ABORT
:
3200 dev_warn(&h
->pdev
->dev
, "cciss%d: unsolicited "
3201 "abort %p\n", h
->ctlr
, cmd
);
3202 if (cmd
->retry_count
< MAX_CMD_RETRIES
) {
3204 dev_warn(&h
->pdev
->dev
, "retrying %p\n", cmd
);
3207 dev_warn(&h
->pdev
->dev
,
3208 "%p retried too many times\n", cmd
);
3209 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3210 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3211 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3212 DID_PASSTHROUGH
: DID_ABORT
);
3215 dev_warn(&h
->pdev
->dev
, "cmd %p timedout\n", cmd
);
3216 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3217 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3218 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3219 DID_PASSTHROUGH
: DID_ERROR
);
3221 case CMD_UNABORTABLE
:
3222 dev_warn(&h
->pdev
->dev
, "cmd %p unabortable\n", cmd
);
3223 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3224 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3225 cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
?
3226 DID_PASSTHROUGH
: DID_ERROR
);
3229 dev_warn(&h
->pdev
->dev
, "cmd %p returned "
3230 "unknown status %x\n", cmd
,
3231 cmd
->err_info
->CommandStatus
);
3232 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3233 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3234 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3235 DID_PASSTHROUGH
: DID_ERROR
);
3238 after_error_processing
:
3240 /* We need to return this command */
3242 resend_cciss_cmd(h
, cmd
);
3245 cmd
->rq
->completion_data
= cmd
;
3246 blk_complete_request(cmd
->rq
);
3249 static inline u32
cciss_tag_contains_index(u32 tag
)
3251 #define DIRECT_LOOKUP_BIT 0x10
3252 return tag
& DIRECT_LOOKUP_BIT
;
3255 static inline u32
cciss_tag_to_index(u32 tag
)
3257 #define DIRECT_LOOKUP_SHIFT 5
3258 return tag
>> DIRECT_LOOKUP_SHIFT
;
3261 static inline u32
cciss_tag_discard_error_bits(ctlr_info_t
*h
, u32 tag
)
3263 #define CCISS_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
3264 #define CCISS_SIMPLE_ERROR_BITS 0x03
3265 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
3266 return tag
& ~CCISS_PERF_ERROR_BITS
;
3267 return tag
& ~CCISS_SIMPLE_ERROR_BITS
;
3270 static inline void cciss_mark_tag_indexed(u32
*tag
)
3272 *tag
|= DIRECT_LOOKUP_BIT
;
3275 static inline void cciss_set_tag_index(u32
*tag
, u32 index
)
3277 *tag
|= (index
<< DIRECT_LOOKUP_SHIFT
);
3281 * Get a request and submit it to the controller.
3283 static void do_cciss_request(struct request_queue
*q
)
3285 ctlr_info_t
*h
= q
->queuedata
;
3286 CommandList_struct
*c
;
3289 struct request
*creq
;
3291 struct scatterlist
*tmp_sg
;
3292 SGDescriptor_struct
*curr_sg
;
3293 drive_info_struct
*drv
;
3299 creq
= blk_peek_request(q
);
3303 BUG_ON(creq
->nr_phys_segments
> h
->maxsgentries
);
3309 blk_start_request(creq
);
3311 tmp_sg
= h
->scatter_list
[c
->cmdindex
];
3312 spin_unlock_irq(q
->queue_lock
);
3314 c
->cmd_type
= CMD_RWREQ
;
3317 /* fill in the request */
3318 drv
= creq
->rq_disk
->private_data
;
3319 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
3320 /* got command from pool, so use the command block index instead */
3321 /* for direct lookups. */
3322 /* The first 2 bits are reserved for controller error reporting. */
3323 cciss_set_tag_index(&c
->Header
.Tag
.lower
, c
->cmdindex
);
3324 cciss_mark_tag_indexed(&c
->Header
.Tag
.lower
);
3325 memcpy(&c
->Header
.LUN
, drv
->LunID
, sizeof(drv
->LunID
));
3326 c
->Request
.CDBLen
= 10; /* 12 byte commands not in FW yet; */
3327 c
->Request
.Type
.Type
= TYPE_CMD
; /* It is a command. */
3328 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3329 c
->Request
.Type
.Direction
=
3330 (rq_data_dir(creq
) == READ
) ? XFER_READ
: XFER_WRITE
;
3331 c
->Request
.Timeout
= 0; /* Don't time out */
3333 (rq_data_dir(creq
) == READ
) ? h
->cciss_read
: h
->cciss_write
;
3334 start_blk
= blk_rq_pos(creq
);
3335 dev_dbg(&h
->pdev
->dev
, "sector =%d nr_sectors=%d\n",
3336 (int)blk_rq_pos(creq
), (int)blk_rq_sectors(creq
));
3337 sg_init_table(tmp_sg
, h
->maxsgentries
);
3338 seg
= blk_rq_map_sg(q
, creq
, tmp_sg
);
3340 /* get the DMA records for the setup */
3341 if (c
->Request
.Type
.Direction
== XFER_READ
)
3342 dir
= PCI_DMA_FROMDEVICE
;
3344 dir
= PCI_DMA_TODEVICE
;
3350 for (i
= 0; i
< seg
; i
++) {
3351 if (((sg_index
+1) == (h
->max_cmd_sgentries
)) &&
3352 !chained
&& ((seg
- i
) > 1)) {
3353 /* Point to next chain block. */
3354 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
3358 curr_sg
[sg_index
].Len
= tmp_sg
[i
].length
;
3359 temp64
.val
= (__u64
) pci_map_page(h
->pdev
, sg_page(&tmp_sg
[i
]),
3361 tmp_sg
[i
].length
, dir
);
3362 curr_sg
[sg_index
].Addr
.lower
= temp64
.val32
.lower
;
3363 curr_sg
[sg_index
].Addr
.upper
= temp64
.val32
.upper
;
3364 curr_sg
[sg_index
].Ext
= 0; /* we are not chaining */
3368 cciss_map_sg_chain_block(h
, c
, h
->cmd_sg_list
[c
->cmdindex
],
3369 (seg
- (h
->max_cmd_sgentries
- 1)) *
3370 sizeof(SGDescriptor_struct
));
3372 /* track how many SG entries we are using */
3376 dev_dbg(&h
->pdev
->dev
, "Submitting %u sectors in %d segments "
3378 blk_rq_sectors(creq
), seg
, chained
);
3380 c
->Header
.SGTotal
= seg
+ chained
;
3381 if (seg
<= h
->max_cmd_sgentries
)
3382 c
->Header
.SGList
= c
->Header
.SGTotal
;
3384 c
->Header
.SGList
= h
->max_cmd_sgentries
;
3385 set_performant_mode(h
, c
);
3387 if (likely(creq
->cmd_type
== REQ_TYPE_FS
)) {
3388 if(h
->cciss_read
== CCISS_READ_10
) {
3389 c
->Request
.CDB
[1] = 0;
3390 c
->Request
.CDB
[2] = (start_blk
>> 24) & 0xff; /* MSB */
3391 c
->Request
.CDB
[3] = (start_blk
>> 16) & 0xff;
3392 c
->Request
.CDB
[4] = (start_blk
>> 8) & 0xff;
3393 c
->Request
.CDB
[5] = start_blk
& 0xff;
3394 c
->Request
.CDB
[6] = 0; /* (sect >> 24) & 0xff; MSB */
3395 c
->Request
.CDB
[7] = (blk_rq_sectors(creq
) >> 8) & 0xff;
3396 c
->Request
.CDB
[8] = blk_rq_sectors(creq
) & 0xff;
3397 c
->Request
.CDB
[9] = c
->Request
.CDB
[11] = c
->Request
.CDB
[12] = 0;
3399 u32 upper32
= upper_32_bits(start_blk
);
3401 c
->Request
.CDBLen
= 16;
3402 c
->Request
.CDB
[1]= 0;
3403 c
->Request
.CDB
[2]= (upper32
>> 24) & 0xff; /* MSB */
3404 c
->Request
.CDB
[3]= (upper32
>> 16) & 0xff;
3405 c
->Request
.CDB
[4]= (upper32
>> 8) & 0xff;
3406 c
->Request
.CDB
[5]= upper32
& 0xff;
3407 c
->Request
.CDB
[6]= (start_blk
>> 24) & 0xff;
3408 c
->Request
.CDB
[7]= (start_blk
>> 16) & 0xff;
3409 c
->Request
.CDB
[8]= (start_blk
>> 8) & 0xff;
3410 c
->Request
.CDB
[9]= start_blk
& 0xff;
3411 c
->Request
.CDB
[10]= (blk_rq_sectors(creq
) >> 24) & 0xff;
3412 c
->Request
.CDB
[11]= (blk_rq_sectors(creq
) >> 16) & 0xff;
3413 c
->Request
.CDB
[12]= (blk_rq_sectors(creq
) >> 8) & 0xff;
3414 c
->Request
.CDB
[13]= blk_rq_sectors(creq
) & 0xff;
3415 c
->Request
.CDB
[14] = c
->Request
.CDB
[15] = 0;
3417 } else if (creq
->cmd_type
== REQ_TYPE_BLOCK_PC
) {
3418 c
->Request
.CDBLen
= creq
->cmd_len
;
3419 memcpy(c
->Request
.CDB
, creq
->cmd
, BLK_MAX_CDB
);
3421 dev_warn(&h
->pdev
->dev
, "bad request type %d\n",
3426 spin_lock_irq(q
->queue_lock
);
3430 if (h
->Qdepth
> h
->maxQsinceinit
)
3431 h
->maxQsinceinit
= h
->Qdepth
;
3437 /* We will already have the driver lock here so not need
3443 static inline unsigned long get_next_completion(ctlr_info_t
*h
)
3445 return h
->access
.command_completed(h
);
3448 static inline int interrupt_pending(ctlr_info_t
*h
)
3450 return h
->access
.intr_pending(h
);
3453 static inline long interrupt_not_for_us(ctlr_info_t
*h
)
3455 return ((h
->access
.intr_pending(h
) == 0) ||
3456 (h
->interrupts_enabled
== 0));
3459 static inline int bad_tag(ctlr_info_t
*h
, u32 tag_index
,
3462 if (unlikely(tag_index
>= h
->nr_cmds
)) {
3463 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
3469 static inline void finish_cmd(ctlr_info_t
*h
, CommandList_struct
*c
,
3473 if (likely(c
->cmd_type
== CMD_RWREQ
))
3474 complete_command(h
, c
, 0);
3475 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3476 complete(c
->waiting
);
3477 #ifdef CONFIG_CISS_SCSI_TAPE
3478 else if (c
->cmd_type
== CMD_SCSI
)
3479 complete_scsi_command(c
, 0, raw_tag
);
3483 static inline u32
next_command(ctlr_info_t
*h
)
3487 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
3488 return h
->access
.command_completed(h
);
3490 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
3491 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
3492 (h
->reply_pool_head
)++;
3493 h
->commands_outstanding
--;
3497 /* Check for wraparound */
3498 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
3499 h
->reply_pool_head
= h
->reply_pool
;
3500 h
->reply_pool_wraparound
^= 1;
3505 /* process completion of an indexed ("direct lookup") command */
3506 static inline u32
process_indexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3509 CommandList_struct
*c
;
3511 tag_index
= cciss_tag_to_index(raw_tag
);
3512 if (bad_tag(h
, tag_index
, raw_tag
))
3513 return next_command(h
);
3514 c
= h
->cmd_pool
+ tag_index
;
3515 finish_cmd(h
, c
, raw_tag
);
3516 return next_command(h
);
3519 /* process completion of a non-indexed command */
3520 static inline u32
process_nonindexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3522 CommandList_struct
*c
= NULL
;
3523 __u32 busaddr_masked
, tag_masked
;
3525 tag_masked
= cciss_tag_discard_error_bits(h
, raw_tag
);
3526 list_for_each_entry(c
, &h
->cmpQ
, list
) {
3527 busaddr_masked
= cciss_tag_discard_error_bits(h
, c
->busaddr
);
3528 if (busaddr_masked
== tag_masked
) {
3529 finish_cmd(h
, c
, raw_tag
);
3530 return next_command(h
);
3533 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3534 return next_command(h
);
3537 /* Some controllers, like p400, will give us one interrupt
3538 * after a soft reset, even if we turned interrupts off.
3539 * Only need to check for this in the cciss_xxx_discard_completions
3542 static int ignore_bogus_interrupt(ctlr_info_t
*h
)
3544 if (likely(!reset_devices
))
3547 if (likely(h
->interrupts_enabled
))
3550 dev_info(&h
->pdev
->dev
, "Received interrupt while interrupts disabled "
3551 "(known firmware bug.) Ignoring.\n");
3556 static irqreturn_t
cciss_intx_discard_completions(int irq
, void *dev_id
)
3558 ctlr_info_t
*h
= dev_id
;
3559 unsigned long flags
;
3562 if (ignore_bogus_interrupt(h
))
3565 if (interrupt_not_for_us(h
))
3567 spin_lock_irqsave(&h
->lock
, flags
);
3568 while (interrupt_pending(h
)) {
3569 raw_tag
= get_next_completion(h
);
3570 while (raw_tag
!= FIFO_EMPTY
)
3571 raw_tag
= next_command(h
);
3573 spin_unlock_irqrestore(&h
->lock
, flags
);
3577 static irqreturn_t
cciss_msix_discard_completions(int irq
, void *dev_id
)
3579 ctlr_info_t
*h
= dev_id
;
3580 unsigned long flags
;
3583 if (ignore_bogus_interrupt(h
))
3586 spin_lock_irqsave(&h
->lock
, flags
);
3587 raw_tag
= get_next_completion(h
);
3588 while (raw_tag
!= FIFO_EMPTY
)
3589 raw_tag
= next_command(h
);
3590 spin_unlock_irqrestore(&h
->lock
, flags
);
3594 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
)
3596 ctlr_info_t
*h
= dev_id
;
3597 unsigned long flags
;
3600 if (interrupt_not_for_us(h
))
3602 spin_lock_irqsave(&h
->lock
, flags
);
3603 while (interrupt_pending(h
)) {
3604 raw_tag
= get_next_completion(h
);
3605 while (raw_tag
!= FIFO_EMPTY
) {
3606 if (cciss_tag_contains_index(raw_tag
))
3607 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3609 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3612 spin_unlock_irqrestore(&h
->lock
, flags
);
3616 /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never
3617 * check the interrupt pending register because it is not set.
3619 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
)
3621 ctlr_info_t
*h
= dev_id
;
3622 unsigned long flags
;
3625 spin_lock_irqsave(&h
->lock
, flags
);
3626 raw_tag
= get_next_completion(h
);
3627 while (raw_tag
!= FIFO_EMPTY
) {
3628 if (cciss_tag_contains_index(raw_tag
))
3629 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3631 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3633 spin_unlock_irqrestore(&h
->lock
, flags
);
3638 * add_to_scan_list() - add controller to rescan queue
3639 * @h: Pointer to the controller.
3641 * Adds the controller to the rescan queue if not already on the queue.
3643 * returns 1 if added to the queue, 0 if skipped (could be on the
3644 * queue already, or the controller could be initializing or shutting
3647 static int add_to_scan_list(struct ctlr_info
*h
)
3649 struct ctlr_info
*test_h
;
3653 if (h
->busy_initializing
)
3656 if (!mutex_trylock(&h
->busy_shutting_down
))
3659 mutex_lock(&scan_mutex
);
3660 list_for_each_entry(test_h
, &scan_q
, scan_list
) {
3666 if (!found
&& !h
->busy_scanning
) {
3667 INIT_COMPLETION(h
->scan_wait
);
3668 list_add_tail(&h
->scan_list
, &scan_q
);
3671 mutex_unlock(&scan_mutex
);
3672 mutex_unlock(&h
->busy_shutting_down
);
3678 * remove_from_scan_list() - remove controller from rescan queue
3679 * @h: Pointer to the controller.
3681 * Removes the controller from the rescan queue if present. Blocks if
3682 * the controller is currently conducting a rescan. The controller
3683 * can be in one of three states:
3684 * 1. Doesn't need a scan
3685 * 2. On the scan list, but not scanning yet (we remove it)
3686 * 3. Busy scanning (and not on the list). In this case we want to wait for
3687 * the scan to complete to make sure the scanning thread for this
3688 * controller is completely idle.
3690 static void remove_from_scan_list(struct ctlr_info
*h
)
3692 struct ctlr_info
*test_h
, *tmp_h
;
3694 mutex_lock(&scan_mutex
);
3695 list_for_each_entry_safe(test_h
, tmp_h
, &scan_q
, scan_list
) {
3696 if (test_h
== h
) { /* state 2. */
3697 list_del(&h
->scan_list
);
3698 complete_all(&h
->scan_wait
);
3699 mutex_unlock(&scan_mutex
);
3703 if (h
->busy_scanning
) { /* state 3. */
3704 mutex_unlock(&scan_mutex
);
3705 wait_for_completion(&h
->scan_wait
);
3706 } else { /* state 1, nothing to do. */
3707 mutex_unlock(&scan_mutex
);
3712 * scan_thread() - kernel thread used to rescan controllers
3715 * A kernel thread used scan for drive topology changes on
3716 * controllers. The thread processes only one controller at a time
3717 * using a queue. Controllers are added to the queue using
3718 * add_to_scan_list() and removed from the queue either after done
3719 * processing or using remove_from_scan_list().
3723 static int scan_thread(void *data
)
3725 struct ctlr_info
*h
;
3728 set_current_state(TASK_INTERRUPTIBLE
);
3730 if (kthread_should_stop())
3734 mutex_lock(&scan_mutex
);
3735 if (list_empty(&scan_q
)) {
3736 mutex_unlock(&scan_mutex
);
3740 h
= list_entry(scan_q
.next
,
3743 list_del(&h
->scan_list
);
3744 h
->busy_scanning
= 1;
3745 mutex_unlock(&scan_mutex
);
3747 rebuild_lun_table(h
, 0, 0);
3748 complete_all(&h
->scan_wait
);
3749 mutex_lock(&scan_mutex
);
3750 h
->busy_scanning
= 0;
3751 mutex_unlock(&scan_mutex
);
3758 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
3760 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
3763 switch (c
->err_info
->SenseInfo
[12]) {
3765 dev_warn(&h
->pdev
->dev
, "a state change "
3766 "detected, command retried\n");
3770 dev_warn(&h
->pdev
->dev
, "LUN failure "
3771 "detected, action required\n");
3774 case REPORT_LUNS_CHANGED
:
3775 dev_warn(&h
->pdev
->dev
, "report LUN data changed\n");
3777 * Here, we could call add_to_scan_list and wake up the scan thread,
3778 * except that it's quite likely that we will get more than one
3779 * REPORT_LUNS_CHANGED condition in quick succession, which means
3780 * that those which occur after the first one will likely happen
3781 * *during* the scan_thread's rescan. And the rescan code is not
3782 * robust enough to restart in the middle, undoing what it has already
3783 * done, and it's not clear that it's even possible to do this, since
3784 * part of what it does is notify the block layer, which starts
3785 * doing it's own i/o to read partition tables and so on, and the
3786 * driver doesn't have visibility to know what might need undoing.
3787 * In any event, if possible, it is horribly complicated to get right
3788 * so we just don't do it for now.
3790 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
3794 case POWER_OR_RESET
:
3795 dev_warn(&h
->pdev
->dev
,
3796 "a power on or device reset detected\n");
3799 case UNIT_ATTENTION_CLEARED
:
3800 dev_warn(&h
->pdev
->dev
,
3801 "unit attention cleared by another initiator\n");
3805 dev_warn(&h
->pdev
->dev
, "unknown unit attention detected\n");
3811 * We cannot read the structure directly, for portability we must use
3813 * This is for debug only.
3815 static void print_cfg_table(ctlr_info_t
*h
)
3819 CfgTable_struct
*tb
= h
->cfgtable
;
3821 dev_dbg(&h
->pdev
->dev
, "Controller Configuration information\n");
3822 dev_dbg(&h
->pdev
->dev
, "------------------------------------\n");
3823 for (i
= 0; i
< 4; i
++)
3824 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3825 temp_name
[4] = '\0';
3826 dev_dbg(&h
->pdev
->dev
, " Signature = %s\n", temp_name
);
3827 dev_dbg(&h
->pdev
->dev
, " Spec Number = %d\n",
3828 readl(&(tb
->SpecValence
)));
3829 dev_dbg(&h
->pdev
->dev
, " Transport methods supported = 0x%x\n",
3830 readl(&(tb
->TransportSupport
)));
3831 dev_dbg(&h
->pdev
->dev
, " Transport methods active = 0x%x\n",
3832 readl(&(tb
->TransportActive
)));
3833 dev_dbg(&h
->pdev
->dev
, " Requested transport Method = 0x%x\n",
3834 readl(&(tb
->HostWrite
.TransportRequest
)));
3835 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Delay = 0x%x\n",
3836 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3837 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Count = 0x%x\n",
3838 readl(&(tb
->HostWrite
.CoalIntCount
)));
3839 dev_dbg(&h
->pdev
->dev
, " Max outstanding commands = 0x%d\n",
3840 readl(&(tb
->CmdsOutMax
)));
3841 dev_dbg(&h
->pdev
->dev
, " Bus Types = 0x%x\n",
3842 readl(&(tb
->BusTypes
)));
3843 for (i
= 0; i
< 16; i
++)
3844 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3845 temp_name
[16] = '\0';
3846 dev_dbg(&h
->pdev
->dev
, " Server Name = %s\n", temp_name
);
3847 dev_dbg(&h
->pdev
->dev
, " Heartbeat Counter = 0x%x\n\n\n",
3848 readl(&(tb
->HeartBeat
)));
3851 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3853 int i
, offset
, mem_type
, bar_type
;
3854 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3857 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3858 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3859 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3862 mem_type
= pci_resource_flags(pdev
, i
) &
3863 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3865 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3866 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3867 offset
+= 4; /* 32 bit */
3869 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3872 default: /* reserved in PCI 2.2 */
3873 dev_warn(&pdev
->dev
,
3874 "Base address is invalid\n");
3879 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3885 /* Fill in bucket_map[], given nsgs (the max number of
3886 * scatter gather elements supported) and bucket[],
3887 * which is an array of 8 integers. The bucket[] array
3888 * contains 8 different DMA transfer sizes (in 16
3889 * byte increments) which the controller uses to fetch
3890 * commands. This function fills in bucket_map[], which
3891 * maps a given number of scatter gather elements to one of
3892 * the 8 DMA transfer sizes. The point of it is to allow the
3893 * controller to only do as much DMA as needed to fetch the
3894 * command, with the DMA transfer size encoded in the lower
3895 * bits of the command address.
3897 static void calc_bucket_map(int bucket
[], int num_buckets
,
3898 int nsgs
, int *bucket_map
)
3902 /* even a command with 0 SGs requires 4 blocks */
3903 #define MINIMUM_TRANSFER_BLOCKS 4
3904 #define NUM_BUCKETS 8
3905 /* Note, bucket_map must have nsgs+1 entries. */
3906 for (i
= 0; i
<= nsgs
; i
++) {
3907 /* Compute size of a command with i SG entries */
3908 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
3909 b
= num_buckets
; /* Assume the biggest bucket */
3910 /* Find the bucket that is just big enough */
3911 for (j
= 0; j
< 8; j
++) {
3912 if (bucket
[j
] >= size
) {
3917 /* for a command with i SG entries, use bucket b. */
3922 static void __devinit
cciss_wait_for_mode_change_ack(ctlr_info_t
*h
)
3926 /* under certain very rare conditions, this can take awhile.
3927 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3928 * as we enter this code.) */
3929 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3930 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
3932 usleep_range(10000, 20000);
3936 static __devinit
void cciss_enter_performant_mode(ctlr_info_t
*h
,
3939 /* This is a bit complicated. There are 8 registers on
3940 * the controller which we write to to tell it 8 different
3941 * sizes of commands which there may be. It's a way of
3942 * reducing the DMA done to fetch each command. Encoded into
3943 * each command's tag are 3 bits which communicate to the controller
3944 * which of the eight sizes that command fits within. The size of
3945 * each command depends on how many scatter gather entries there are.
3946 * Each SG entry requires 16 bytes. The eight registers are programmed
3947 * with the number of 16-byte blocks a command of that size requires.
3948 * The smallest command possible requires 5 such 16 byte blocks.
3949 * the largest command possible requires MAXSGENTRIES + 4 16-byte
3950 * blocks. Note, this only extends to the SG entries contained
3951 * within the command block, and does not extend to chained blocks
3952 * of SG elements. bft[] contains the eight values we write to
3953 * the registers. They are not evenly distributed, but have more
3954 * sizes for small commands, and fewer sizes for larger commands.
3957 int bft
[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES
+ 4};
3959 * 5 = 1 s/g entry or 4k
3960 * 6 = 2 s/g entry or 8k
3961 * 8 = 4 s/g entry or 16k
3962 * 10 = 6 s/g entry or 24k
3964 unsigned long register_value
;
3965 BUILD_BUG_ON(28 > MAXSGENTRIES
+ 4);
3967 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
3969 /* Controller spec: zero out this buffer. */
3970 memset(h
->reply_pool
, 0, h
->max_commands
* sizeof(__u64
));
3971 h
->reply_pool_head
= h
->reply_pool
;
3973 trans_offset
= readl(&(h
->cfgtable
->TransMethodOffset
));
3974 calc_bucket_map(bft
, ARRAY_SIZE(bft
), h
->maxsgentries
,
3975 h
->blockFetchTable
);
3976 writel(bft
[0], &h
->transtable
->BlockFetch0
);
3977 writel(bft
[1], &h
->transtable
->BlockFetch1
);
3978 writel(bft
[2], &h
->transtable
->BlockFetch2
);
3979 writel(bft
[3], &h
->transtable
->BlockFetch3
);
3980 writel(bft
[4], &h
->transtable
->BlockFetch4
);
3981 writel(bft
[5], &h
->transtable
->BlockFetch5
);
3982 writel(bft
[6], &h
->transtable
->BlockFetch6
);
3983 writel(bft
[7], &h
->transtable
->BlockFetch7
);
3985 /* size of controller ring buffer */
3986 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
3987 writel(1, &h
->transtable
->RepQCount
);
3988 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
3989 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
3990 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
3991 writel(0, &h
->transtable
->RepQAddr0High32
);
3992 writel(CFGTBL_Trans_Performant
| use_short_tags
,
3993 &(h
->cfgtable
->HostWrite
.TransportRequest
));
3995 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3996 cciss_wait_for_mode_change_ack(h
);
3997 register_value
= readl(&(h
->cfgtable
->TransportActive
));
3998 if (!(register_value
& CFGTBL_Trans_Performant
))
3999 dev_warn(&h
->pdev
->dev
, "cciss: unable to get board into"
4000 " performant mode\n");
4003 static void __devinit
cciss_put_controller_into_performant_mode(ctlr_info_t
*h
)
4005 __u32 trans_support
;
4007 if (cciss_simple_mode
)
4010 dev_dbg(&h
->pdev
->dev
, "Trying to put board into Performant mode\n");
4011 /* Attempt to put controller into performant mode if supported */
4012 /* Does board support performant mode? */
4013 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
4014 if (!(trans_support
& PERFORMANT_MODE
))
4017 dev_dbg(&h
->pdev
->dev
, "Placing controller into performant mode\n");
4018 /* Performant mode demands commands on a 32 byte boundary
4019 * pci_alloc_consistent aligns on page boundarys already.
4020 * Just need to check if divisible by 32
4022 if ((sizeof(CommandList_struct
) % 32) != 0) {
4023 dev_warn(&h
->pdev
->dev
, "%s %d %s\n",
4024 "cciss info: command size[",
4025 (int)sizeof(CommandList_struct
),
4026 "] not divisible by 32, no performant mode..\n");
4030 /* Performant mode ring buffer and supporting data structures */
4031 h
->reply_pool
= (__u64
*)pci_alloc_consistent(
4032 h
->pdev
, h
->max_commands
* sizeof(__u64
),
4033 &(h
->reply_pool_dhandle
));
4035 /* Need a block fetch table for performant mode */
4036 h
->blockFetchTable
= kmalloc(((h
->maxsgentries
+1) *
4037 sizeof(__u32
)), GFP_KERNEL
);
4039 if ((h
->reply_pool
== NULL
) || (h
->blockFetchTable
== NULL
))
4042 cciss_enter_performant_mode(h
,
4043 trans_support
& CFGTBL_Trans_use_short_tags
);
4045 /* Change the access methods to the performant access methods */
4046 h
->access
= SA5_performant_access
;
4047 h
->transMethod
= CFGTBL_Trans_Performant
;
4051 kfree(h
->blockFetchTable
);
4053 pci_free_consistent(h
->pdev
,
4054 h
->max_commands
* sizeof(__u64
),
4056 h
->reply_pool_dhandle
);
4059 } /* cciss_put_controller_into_performant_mode */
4061 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
4062 * controllers that are capable. If not, we use IO-APIC mode.
4065 static void __devinit
cciss_interrupt_mode(ctlr_info_t
*h
)
4067 #ifdef CONFIG_PCI_MSI
4069 struct msix_entry cciss_msix_entries
[4] = { {0, 0}, {0, 1},
4073 /* Some boards advertise MSI but don't really support it */
4074 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
4075 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
4076 goto default_int_mode
;
4078 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSIX
)) {
4079 err
= pci_enable_msix(h
->pdev
, cciss_msix_entries
, 4);
4081 h
->intr
[0] = cciss_msix_entries
[0].vector
;
4082 h
->intr
[1] = cciss_msix_entries
[1].vector
;
4083 h
->intr
[2] = cciss_msix_entries
[2].vector
;
4084 h
->intr
[3] = cciss_msix_entries
[3].vector
;
4089 dev_warn(&h
->pdev
->dev
,
4090 "only %d MSI-X vectors available\n", err
);
4091 goto default_int_mode
;
4093 dev_warn(&h
->pdev
->dev
,
4094 "MSI-X init failed %d\n", err
);
4095 goto default_int_mode
;
4098 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSI
)) {
4099 if (!pci_enable_msi(h
->pdev
))
4102 dev_warn(&h
->pdev
->dev
, "MSI init failed\n");
4105 #endif /* CONFIG_PCI_MSI */
4106 /* if we get here we're going to use the default interrupt mode */
4107 h
->intr
[h
->intr_mode
] = h
->pdev
->irq
;
4111 static int __devinit
cciss_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
4114 u32 subsystem_vendor_id
, subsystem_device_id
;
4116 subsystem_vendor_id
= pdev
->subsystem_vendor
;
4117 subsystem_device_id
= pdev
->subsystem_device
;
4118 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
4119 subsystem_vendor_id
;
4121 for (i
= 0; i
< ARRAY_SIZE(products
); i
++)
4122 if (*board_id
== products
[i
].board_id
)
4124 dev_warn(&pdev
->dev
, "unrecognized board ID: 0x%08x, ignoring.\n",
4129 static inline bool cciss_board_disabled(ctlr_info_t
*h
)
4133 (void) pci_read_config_word(h
->pdev
, PCI_COMMAND
, &command
);
4134 return ((command
& PCI_COMMAND_MEMORY
) == 0);
4137 static int __devinit
cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
4138 unsigned long *memory_bar
)
4142 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
4143 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
4144 /* addressing mode bits already removed */
4145 *memory_bar
= pci_resource_start(pdev
, i
);
4146 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
4150 dev_warn(&pdev
->dev
, "no memory BAR found\n");
4154 static int __devinit
cciss_wait_for_board_state(struct pci_dev
*pdev
,
4155 void __iomem
*vaddr
, int wait_for_ready
)
4156 #define BOARD_READY 1
4157 #define BOARD_NOT_READY 0
4163 iterations
= CCISS_BOARD_READY_ITERATIONS
;
4165 iterations
= CCISS_BOARD_NOT_READY_ITERATIONS
;
4167 for (i
= 0; i
< iterations
; i
++) {
4168 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
4169 if (wait_for_ready
) {
4170 if (scratchpad
== CCISS_FIRMWARE_READY
)
4173 if (scratchpad
!= CCISS_FIRMWARE_READY
)
4176 msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS
);
4178 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
4182 static int __devinit
cciss_find_cfg_addrs(struct pci_dev
*pdev
,
4183 void __iomem
*vaddr
, u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
4186 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
4187 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
4188 *cfg_base_addr
&= (u32
) 0x0000ffff;
4189 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
4190 if (*cfg_base_addr_index
== -1) {
4191 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index, "
4192 "*cfg_base_addr = 0x%08x\n", *cfg_base_addr
);
4198 static int __devinit
cciss_find_cfgtables(ctlr_info_t
*h
)
4202 u64 cfg_base_addr_index
;
4206 rc
= cciss_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
4207 &cfg_base_addr_index
, &cfg_offset
);
4210 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4211 cfg_base_addr_index
) + cfg_offset
, sizeof(h
->cfgtable
));
4214 rc
= write_driver_ver_to_cfgtable(h
->cfgtable
);
4217 /* Find performant mode table. */
4218 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
4219 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4220 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
4221 sizeof(*h
->transtable
));
4227 static void __devinit
cciss_get_max_perf_mode_cmds(struct ctlr_info
*h
)
4229 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
4231 /* Limit commands in memory limited kdump scenario. */
4232 if (reset_devices
&& h
->max_commands
> 32)
4233 h
->max_commands
= 32;
4235 if (h
->max_commands
< 16) {
4236 dev_warn(&h
->pdev
->dev
, "Controller reports "
4237 "max supported commands of %d, an obvious lie. "
4238 "Using 16. Ensure that firmware is up to date.\n",
4240 h
->max_commands
= 16;
4244 /* Interrogate the hardware for some limits:
4245 * max commands, max SG elements without chaining, and with chaining,
4246 * SG chain block size, etc.
4248 static void __devinit
cciss_find_board_params(ctlr_info_t
*h
)
4250 cciss_get_max_perf_mode_cmds(h
);
4251 h
->nr_cmds
= h
->max_commands
- 4 - cciss_tape_cmds
;
4252 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxSGElements
));
4254 * Limit in-command s/g elements to 32 save dma'able memory.
4255 * Howvever spec says if 0, use 31
4257 h
->max_cmd_sgentries
= 31;
4258 if (h
->maxsgentries
> 512) {
4259 h
->max_cmd_sgentries
= 32;
4260 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sgentries
+ 1;
4261 h
->maxsgentries
--; /* save one for chain pointer */
4263 h
->maxsgentries
= 31; /* default to traditional values */
4268 static inline bool CISS_signature_present(ctlr_info_t
*h
)
4270 if (!check_signature(h
->cfgtable
->Signature
, "CISS", 4)) {
4271 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
4277 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
4278 static inline void cciss_enable_scsi_prefetch(ctlr_info_t
*h
)
4283 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
4285 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
4289 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
4290 * in a prefetch beyond physical memory.
4292 static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t
*h
)
4297 if (h
->board_id
!= 0x3225103C)
4299 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
4300 dma_prefetch
|= 0x8000;
4301 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
4302 pci_read_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, &dma_refetch
);
4304 pci_write_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, dma_refetch
);
4307 static int __devinit
cciss_pci_init(ctlr_info_t
*h
)
4309 int prod_index
, err
;
4311 prod_index
= cciss_lookup_board_id(h
->pdev
, &h
->board_id
);
4314 h
->product_name
= products
[prod_index
].product_name
;
4315 h
->access
= *(products
[prod_index
].access
);
4317 if (cciss_board_disabled(h
)) {
4318 dev_warn(&h
->pdev
->dev
, "controller appears to be disabled\n");
4322 pci_disable_link_state(h
->pdev
, PCIE_LINK_STATE_L0S
|
4323 PCIE_LINK_STATE_L1
| PCIE_LINK_STATE_CLKPM
);
4325 err
= pci_enable_device(h
->pdev
);
4327 dev_warn(&h
->pdev
->dev
, "Unable to Enable PCI device\n");
4331 err
= pci_request_regions(h
->pdev
, "cciss");
4333 dev_warn(&h
->pdev
->dev
,
4334 "Cannot obtain PCI resources, aborting\n");
4338 dev_dbg(&h
->pdev
->dev
, "irq = %x\n", h
->pdev
->irq
);
4339 dev_dbg(&h
->pdev
->dev
, "board_id = %x\n", h
->board_id
);
4341 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
4342 * else we use the IO-APIC interrupt assigned to us by system ROM.
4344 cciss_interrupt_mode(h
);
4345 err
= cciss_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
4347 goto err_out_free_res
;
4348 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
4351 goto err_out_free_res
;
4353 err
= cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
4355 goto err_out_free_res
;
4356 err
= cciss_find_cfgtables(h
);
4358 goto err_out_free_res
;
4360 cciss_find_board_params(h
);
4362 if (!CISS_signature_present(h
)) {
4364 goto err_out_free_res
;
4366 cciss_enable_scsi_prefetch(h
);
4367 cciss_p600_dma_prefetch_quirk(h
);
4368 err
= cciss_enter_simple_mode(h
);
4370 goto err_out_free_res
;
4371 cciss_put_controller_into_performant_mode(h
);
4376 * Deliberately omit pci_disable_device(): it does something nasty to
4377 * Smart Array controllers that pci_enable_device does not undo
4380 iounmap(h
->transtable
);
4382 iounmap(h
->cfgtable
);
4385 pci_release_regions(h
->pdev
);
4389 /* Function to find the first free pointer into our hba[] array
4390 * Returns -1 if no free entries are left.
4392 static int alloc_cciss_hba(struct pci_dev
*pdev
)
4396 for (i
= 0; i
< MAX_CTLR
; i
++) {
4400 h
= kzalloc(sizeof(ctlr_info_t
), GFP_KERNEL
);
4407 dev_warn(&pdev
->dev
, "This driver supports a maximum"
4408 " of %d controllers.\n", MAX_CTLR
);
4411 dev_warn(&pdev
->dev
, "out of memory.\n");
4415 static void free_hba(ctlr_info_t
*h
)
4419 hba
[h
->ctlr
] = NULL
;
4420 for (i
= 0; i
< h
->highest_lun
+ 1; i
++)
4421 if (h
->gendisk
[i
] != NULL
)
4422 put_disk(h
->gendisk
[i
]);
4426 /* Send a message CDB to the firmware. */
4427 static __devinit
int cciss_message(struct pci_dev
*pdev
, unsigned char opcode
, unsigned char type
)
4430 CommandListHeader_struct CommandHeader
;
4431 RequestBlock_struct Request
;
4432 ErrDescriptor_struct ErrorDescriptor
;
4434 static const size_t cmd_sz
= sizeof(Command
) + sizeof(ErrorInfo_struct
);
4437 uint32_t paddr32
, tag
;
4438 void __iomem
*vaddr
;
4441 vaddr
= ioremap_nocache(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
4445 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
4446 CCISS commands, so they must be allocated from the lower 4GiB of
4448 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4454 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
4460 /* This must fit, because of the 32-bit consistent DMA mask. Also,
4461 although there's no guarantee, we assume that the address is at
4462 least 4-byte aligned (most likely, it's page-aligned). */
4465 cmd
->CommandHeader
.ReplyQueue
= 0;
4466 cmd
->CommandHeader
.SGList
= 0;
4467 cmd
->CommandHeader
.SGTotal
= 0;
4468 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
4469 cmd
->CommandHeader
.Tag
.upper
= 0;
4470 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
4472 cmd
->Request
.CDBLen
= 16;
4473 cmd
->Request
.Type
.Type
= TYPE_MSG
;
4474 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
4475 cmd
->Request
.Type
.Direction
= XFER_NONE
;
4476 cmd
->Request
.Timeout
= 0; /* Don't time out */
4477 cmd
->Request
.CDB
[0] = opcode
;
4478 cmd
->Request
.CDB
[1] = type
;
4479 memset(&cmd
->Request
.CDB
[2], 0, 14); /* the rest of the CDB is reserved */
4481 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(Command
);
4482 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
4483 cmd
->ErrorDescriptor
.Len
= sizeof(ErrorInfo_struct
);
4485 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
4487 for (i
= 0; i
< 10; i
++) {
4488 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
4489 if ((tag
& ~3) == paddr32
)
4491 msleep(CCISS_POST_RESET_NOOP_TIMEOUT_MSECS
);
4496 /* we leak the DMA buffer here ... no choice since the controller could
4497 still complete the command. */
4500 "controller message %02x:%02x timed out\n",
4505 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
4508 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
4513 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
4518 #define cciss_noop(p) cciss_message(p, 3, 0)
4520 static int cciss_controller_hard_reset(struct pci_dev
*pdev
,
4521 void * __iomem vaddr
, u32 use_doorbell
)
4527 /* For everything after the P600, the PCI power state method
4528 * of resetting the controller doesn't work, so we have this
4529 * other way using the doorbell register.
4531 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
4532 writel(use_doorbell
, vaddr
+ SA5_DOORBELL
);
4533 } else { /* Try to do it the PCI power state way */
4535 /* Quoting from the Open CISS Specification: "The Power
4536 * Management Control/Status Register (CSR) controls the power
4537 * state of the device. The normal operating state is D0,
4538 * CSR=00h. The software off state is D3, CSR=03h. To reset
4539 * the controller, place the interface device in D3 then to D0,
4540 * this causes a secondary PCI reset which will reset the
4543 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
4546 "cciss_controller_hard_reset: "
4547 "PCI PM not supported\n");
4550 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
4551 /* enter the D3hot power management state */
4552 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
4553 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4555 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4559 /* enter the D0 power management state */
4560 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4562 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4565 * The P600 requires a small delay when changing states.
4566 * Otherwise we may think the board did not reset and we bail.
4567 * This for kdump only and is particular to the P600.
4574 static __devinit
void init_driver_version(char *driver_version
, int len
)
4576 memset(driver_version
, 0, len
);
4577 strncpy(driver_version
, "cciss " DRIVER_NAME
, len
- 1);
4580 static __devinit
int write_driver_ver_to_cfgtable(
4581 CfgTable_struct __iomem
*cfgtable
)
4583 char *driver_version
;
4584 int i
, size
= sizeof(cfgtable
->driver_version
);
4586 driver_version
= kmalloc(size
, GFP_KERNEL
);
4587 if (!driver_version
)
4590 init_driver_version(driver_version
, size
);
4591 for (i
= 0; i
< size
; i
++)
4592 writeb(driver_version
[i
], &cfgtable
->driver_version
[i
]);
4593 kfree(driver_version
);
4597 static __devinit
void read_driver_ver_from_cfgtable(
4598 CfgTable_struct __iomem
*cfgtable
, unsigned char *driver_ver
)
4602 for (i
= 0; i
< sizeof(cfgtable
->driver_version
); i
++)
4603 driver_ver
[i
] = readb(&cfgtable
->driver_version
[i
]);
4606 static __devinit
int controller_reset_failed(
4607 CfgTable_struct __iomem
*cfgtable
)
4610 char *driver_ver
, *old_driver_ver
;
4611 int rc
, size
= sizeof(cfgtable
->driver_version
);
4613 old_driver_ver
= kmalloc(2 * size
, GFP_KERNEL
);
4614 if (!old_driver_ver
)
4616 driver_ver
= old_driver_ver
+ size
;
4618 /* After a reset, the 32 bytes of "driver version" in the cfgtable
4619 * should have been changed, otherwise we know the reset failed.
4621 init_driver_version(old_driver_ver
, size
);
4622 read_driver_ver_from_cfgtable(cfgtable
, driver_ver
);
4623 rc
= !memcmp(driver_ver
, old_driver_ver
, size
);
4624 kfree(old_driver_ver
);
4628 /* This does a hard reset of the controller using PCI power management
4629 * states or using the doorbell register. */
4630 static __devinit
int cciss_kdump_hard_reset_controller(struct pci_dev
*pdev
)
4634 u64 cfg_base_addr_index
;
4635 void __iomem
*vaddr
;
4636 unsigned long paddr
;
4637 u32 misc_fw_support
;
4639 CfgTable_struct __iomem
*cfgtable
;
4642 u16 command_register
;
4644 /* For controllers as old a the p600, this is very nearly
4647 * pci_save_state(pci_dev);
4648 * pci_set_power_state(pci_dev, PCI_D3hot);
4649 * pci_set_power_state(pci_dev, PCI_D0);
4650 * pci_restore_state(pci_dev);
4652 * For controllers newer than the P600, the pci power state
4653 * method of resetting doesn't work so we have another way
4654 * using the doorbell register.
4657 /* Exclude 640x boards. These are two pci devices in one slot
4658 * which share a battery backed cache module. One controls the
4659 * cache, the other accesses the cache through the one that controls
4660 * it. If we reset the one controlling the cache, the other will
4661 * likely not be happy. Just forbid resetting this conjoined mess.
4663 cciss_lookup_board_id(pdev
, &board_id
);
4664 if (!ctlr_is_resettable(board_id
)) {
4665 dev_warn(&pdev
->dev
, "Cannot reset Smart Array 640x "
4666 "due to shared cache module.");
4670 /* if controller is soft- but not hard resettable... */
4671 if (!ctlr_is_hard_resettable(board_id
))
4672 return -ENOTSUPP
; /* try soft reset later. */
4674 /* Save the PCI command register */
4675 pci_read_config_word(pdev
, 4, &command_register
);
4676 /* Turn the board off. This is so that later pci_restore_state()
4677 * won't turn the board on before the rest of config space is ready.
4679 pci_disable_device(pdev
);
4680 pci_save_state(pdev
);
4682 /* find the first memory BAR, so we can find the cfg table */
4683 rc
= cciss_pci_find_memory_BAR(pdev
, &paddr
);
4686 vaddr
= remap_pci_mem(paddr
, 0x250);
4690 /* find cfgtable in order to check if reset via doorbell is supported */
4691 rc
= cciss_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
4692 &cfg_base_addr_index
, &cfg_offset
);
4695 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
4696 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
4701 rc
= write_driver_ver_to_cfgtable(cfgtable
);
4705 /* If reset via doorbell register is supported, use that.
4706 * There are two such methods. Favor the newest method.
4708 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
4709 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET2
;
4711 use_doorbell
= DOORBELL_CTLR_RESET2
;
4713 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
4715 dev_warn(&pdev
->dev
, "Controller claims that "
4716 "'Bit 2 doorbell reset' is "
4717 "supported, but not 'bit 5 doorbell reset'. "
4718 "Firmware update is recommended.\n");
4719 rc
= -ENOTSUPP
; /* use the soft reset */
4720 goto unmap_cfgtable
;
4724 rc
= cciss_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
4726 goto unmap_cfgtable
;
4727 pci_restore_state(pdev
);
4728 rc
= pci_enable_device(pdev
);
4730 dev_warn(&pdev
->dev
, "failed to enable device.\n");
4731 goto unmap_cfgtable
;
4733 pci_write_config_word(pdev
, 4, command_register
);
4735 /* Some devices (notably the HP Smart Array 5i Controller)
4736 need a little pause here */
4737 msleep(CCISS_POST_RESET_PAUSE_MSECS
);
4739 /* Wait for board to become not ready, then ready. */
4740 dev_info(&pdev
->dev
, "Waiting for board to reset.\n");
4741 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
4743 dev_warn(&pdev
->dev
, "Failed waiting for board to hard reset."
4744 " Will try soft reset.\n");
4745 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4746 goto unmap_cfgtable
;
4748 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
4750 dev_warn(&pdev
->dev
,
4751 "failed waiting for board to become ready "
4752 "after hard reset\n");
4753 goto unmap_cfgtable
;
4756 rc
= controller_reset_failed(vaddr
);
4758 goto unmap_cfgtable
;
4760 dev_warn(&pdev
->dev
, "Unable to successfully hard reset "
4761 "controller. Will try soft reset.\n");
4762 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4764 dev_info(&pdev
->dev
, "Board ready after hard reset.\n");
4775 static __devinit
int cciss_init_reset_devices(struct pci_dev
*pdev
)
4782 /* Reset the controller with a PCI power-cycle or via doorbell */
4783 rc
= cciss_kdump_hard_reset_controller(pdev
);
4785 /* -ENOTSUPP here means we cannot reset the controller
4786 * but it's already (and still) up and running in
4787 * "performant mode". Or, it might be 640x, which can't reset
4788 * due to concerns about shared bbwc between 6402/6404 pair.
4790 if (rc
== -ENOTSUPP
)
4791 return rc
; /* just try to do the kdump anyhow. */
4795 /* Now try to get the controller to respond to a no-op */
4796 dev_warn(&pdev
->dev
, "Waiting for controller to respond to no-op\n");
4797 for (i
= 0; i
< CCISS_POST_RESET_NOOP_RETRIES
; i
++) {
4798 if (cciss_noop(pdev
) == 0)
4801 dev_warn(&pdev
->dev
, "no-op failed%s\n",
4802 (i
< CCISS_POST_RESET_NOOP_RETRIES
- 1 ?
4803 "; re-trying" : ""));
4804 msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS
);
4809 static __devinit
int cciss_allocate_cmd_pool(ctlr_info_t
*h
)
4811 h
->cmd_pool_bits
= kmalloc(BITS_TO_LONGS(h
->nr_cmds
) *
4812 sizeof(unsigned long), GFP_KERNEL
);
4813 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
4814 h
->nr_cmds
* sizeof(CommandList_struct
),
4815 &(h
->cmd_pool_dhandle
));
4816 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
4817 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4818 &(h
->errinfo_pool_dhandle
));
4819 if ((h
->cmd_pool_bits
== NULL
)
4820 || (h
->cmd_pool
== NULL
)
4821 || (h
->errinfo_pool
== NULL
)) {
4822 dev_err(&h
->pdev
->dev
, "out of memory");
4828 static __devinit
int cciss_allocate_scatterlists(ctlr_info_t
*h
)
4832 /* zero it, so that on free we need not know how many were alloc'ed */
4833 h
->scatter_list
= kzalloc(h
->max_commands
*
4834 sizeof(struct scatterlist
*), GFP_KERNEL
);
4835 if (!h
->scatter_list
)
4838 for (i
= 0; i
< h
->nr_cmds
; i
++) {
4839 h
->scatter_list
[i
] = kmalloc(sizeof(struct scatterlist
) *
4840 h
->maxsgentries
, GFP_KERNEL
);
4841 if (h
->scatter_list
[i
] == NULL
) {
4842 dev_err(&h
->pdev
->dev
, "could not allocate "
4850 static void cciss_free_scatterlists(ctlr_info_t
*h
)
4854 if (h
->scatter_list
) {
4855 for (i
= 0; i
< h
->nr_cmds
; i
++)
4856 kfree(h
->scatter_list
[i
]);
4857 kfree(h
->scatter_list
);
4861 static void cciss_free_cmd_pool(ctlr_info_t
*h
)
4863 kfree(h
->cmd_pool_bits
);
4865 pci_free_consistent(h
->pdev
,
4866 h
->nr_cmds
* sizeof(CommandList_struct
),
4867 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4868 if (h
->errinfo_pool
)
4869 pci_free_consistent(h
->pdev
,
4870 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4871 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4874 static int cciss_request_irq(ctlr_info_t
*h
,
4875 irqreturn_t (*msixhandler
)(int, void *),
4876 irqreturn_t (*intxhandler
)(int, void *))
4878 if (h
->msix_vector
|| h
->msi_vector
) {
4879 if (!request_irq(h
->intr
[h
->intr_mode
], msixhandler
,
4882 dev_err(&h
->pdev
->dev
, "Unable to get msi irq %d"
4883 " for %s\n", h
->intr
[h
->intr_mode
],
4888 if (!request_irq(h
->intr
[h
->intr_mode
], intxhandler
,
4889 IRQF_SHARED
, h
->devname
, h
))
4891 dev_err(&h
->pdev
->dev
, "Unable to get irq %d for %s\n",
4892 h
->intr
[h
->intr_mode
], h
->devname
);
4896 static int __devinit
cciss_kdump_soft_reset(ctlr_info_t
*h
)
4898 if (cciss_send_reset(h
, CTLR_LUNID
, CCISS_RESET_TYPE_CONTROLLER
)) {
4899 dev_warn(&h
->pdev
->dev
, "Resetting array controller failed.\n");
4903 dev_info(&h
->pdev
->dev
, "Waiting for board to soft reset.\n");
4904 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_NOT_READY
)) {
4905 dev_warn(&h
->pdev
->dev
, "Soft reset had no effect.\n");
4909 dev_info(&h
->pdev
->dev
, "Board reset, awaiting READY status.\n");
4910 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
)) {
4911 dev_warn(&h
->pdev
->dev
, "Board failed to become ready "
4912 "after soft reset.\n");
4919 static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t
*h
)
4923 free_irq(h
->intr
[h
->intr_mode
], h
);
4924 #ifdef CONFIG_PCI_MSI
4926 pci_disable_msix(h
->pdev
);
4927 else if (h
->msi_vector
)
4928 pci_disable_msi(h
->pdev
);
4929 #endif /* CONFIG_PCI_MSI */
4930 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
4931 cciss_free_scatterlists(h
);
4932 cciss_free_cmd_pool(h
);
4933 kfree(h
->blockFetchTable
);
4935 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
4936 h
->reply_pool
, h
->reply_pool_dhandle
);
4938 iounmap(h
->transtable
);
4940 iounmap(h
->cfgtable
);
4943 unregister_blkdev(h
->major
, h
->devname
);
4944 cciss_destroy_hba_sysfs_entry(h
);
4945 pci_release_regions(h
->pdev
);
4951 * This is it. Find all the controllers and register them. I really hate
4952 * stealing all these major device numbers.
4953 * returns the number of block devices registered.
4955 static int __devinit
cciss_init_one(struct pci_dev
*pdev
,
4956 const struct pci_device_id
*ent
)
4961 int try_soft_reset
= 0;
4962 int dac
, return_code
;
4963 InquiryData_struct
*inq_buff
;
4965 unsigned long flags
;
4967 rc
= cciss_init_reset_devices(pdev
);
4969 if (rc
!= -ENOTSUPP
)
4971 /* If the reset fails in a particular way (it has no way to do
4972 * a proper hard reset, so returns -ENOTSUPP) we can try to do
4973 * a soft reset once we get the controller configured up to the
4974 * point that it can accept a command.
4980 reinit_after_soft_reset
:
4982 i
= alloc_cciss_hba(pdev
);
4988 h
->busy_initializing
= 1;
4989 h
->intr_mode
= cciss_simple_mode
? SIMPLE_MODE_INT
: PERF_MODE_INT
;
4990 INIT_LIST_HEAD(&h
->cmpQ
);
4991 INIT_LIST_HEAD(&h
->reqQ
);
4992 mutex_init(&h
->busy_shutting_down
);
4994 if (cciss_pci_init(h
) != 0)
4995 goto clean_no_release_regions
;
4997 sprintf(h
->devname
, "cciss%d", i
);
5000 if (cciss_tape_cmds
< 2)
5001 cciss_tape_cmds
= 2;
5002 if (cciss_tape_cmds
> 16)
5003 cciss_tape_cmds
= 16;
5005 init_completion(&h
->scan_wait
);
5007 if (cciss_create_hba_sysfs_entry(h
))
5010 /* configure PCI DMA stuff */
5011 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)))
5013 else if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)))
5016 dev_err(&h
->pdev
->dev
, "no suitable DMA available\n");
5021 * register with the major number, or get a dynamic major number
5022 * by passing 0 as argument. This is done for greater than
5023 * 8 controller support.
5025 if (i
< MAX_CTLR_ORIG
)
5026 h
->major
= COMPAQ_CISS_MAJOR
+ i
;
5027 rc
= register_blkdev(h
->major
, h
->devname
);
5028 if (rc
== -EBUSY
|| rc
== -EINVAL
) {
5029 dev_err(&h
->pdev
->dev
,
5030 "Unable to get major number %d for %s "
5031 "on hba %d\n", h
->major
, h
->devname
, i
);
5034 if (i
>= MAX_CTLR_ORIG
)
5038 /* make sure the board interrupts are off */
5039 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5040 rc
= cciss_request_irq(h
, do_cciss_msix_intr
, do_cciss_intx
);
5044 dev_info(&h
->pdev
->dev
, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
5045 h
->devname
, pdev
->device
, pci_name(pdev
),
5046 h
->intr
[h
->intr_mode
], dac
? "" : " not");
5048 if (cciss_allocate_cmd_pool(h
))
5051 if (cciss_allocate_scatterlists(h
))
5054 h
->cmd_sg_list
= cciss_allocate_sg_chain_blocks(h
,
5055 h
->chainsize
, h
->nr_cmds
);
5056 if (!h
->cmd_sg_list
&& h
->chainsize
> 0)
5059 spin_lock_init(&h
->lock
);
5061 /* Initialize the pdev driver private data.
5062 have it point to h. */
5063 pci_set_drvdata(pdev
, h
);
5064 /* command and error info recs zeroed out before
5066 bitmap_zero(h
->cmd_pool_bits
, h
->nr_cmds
);
5069 h
->highest_lun
= -1;
5070 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
5072 h
->gendisk
[j
] = NULL
;
5075 /* At this point, the controller is ready to take commands.
5076 * Now, if reset_devices and the hard reset didn't work, try
5077 * the soft reset and see if that works.
5079 if (try_soft_reset
) {
5081 /* This is kind of gross. We may or may not get a completion
5082 * from the soft reset command, and if we do, then the value
5083 * from the fifo may or may not be valid. So, we wait 10 secs
5084 * after the reset throwing away any completions we get during
5085 * that time. Unregister the interrupt handler and register
5086 * fake ones to scoop up any residual completions.
5088 spin_lock_irqsave(&h
->lock
, flags
);
5089 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5090 spin_unlock_irqrestore(&h
->lock
, flags
);
5091 free_irq(h
->intr
[h
->intr_mode
], h
);
5092 rc
= cciss_request_irq(h
, cciss_msix_discard_completions
,
5093 cciss_intx_discard_completions
);
5095 dev_warn(&h
->pdev
->dev
, "Failed to request_irq after "
5100 rc
= cciss_kdump_soft_reset(h
);
5102 dev_warn(&h
->pdev
->dev
, "Soft reset failed.\n");
5106 dev_info(&h
->pdev
->dev
, "Board READY.\n");
5107 dev_info(&h
->pdev
->dev
,
5108 "Waiting for stale completions to drain.\n");
5109 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5111 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5113 rc
= controller_reset_failed(h
->cfgtable
);
5115 dev_info(&h
->pdev
->dev
,
5116 "Soft reset appears to have failed.\n");
5118 /* since the controller's reset, we have to go back and re-init
5119 * everything. Easiest to just forget what we've done and do it
5122 cciss_undo_allocations_after_kdump_soft_reset(h
);
5125 /* don't go to clean4, we already unallocated */
5128 goto reinit_after_soft_reset
;
5131 cciss_scsi_setup(h
);
5133 /* Turn the interrupts on so we can service requests */
5134 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5136 /* Get the firmware version */
5137 inq_buff
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
5138 if (inq_buff
== NULL
) {
5139 dev_err(&h
->pdev
->dev
, "out of memory\n");
5143 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
5144 sizeof(InquiryData_struct
), 0, CTLR_LUNID
, TYPE_CMD
);
5145 if (return_code
== IO_OK
) {
5146 h
->firm_ver
[0] = inq_buff
->data_byte
[32];
5147 h
->firm_ver
[1] = inq_buff
->data_byte
[33];
5148 h
->firm_ver
[2] = inq_buff
->data_byte
[34];
5149 h
->firm_ver
[3] = inq_buff
->data_byte
[35];
5150 } else { /* send command failed */
5151 dev_warn(&h
->pdev
->dev
, "unable to determine firmware"
5152 " version of controller\n");
5158 h
->cciss_max_sectors
= 8192;
5160 rebuild_lun_table(h
, 1, 0);
5161 cciss_engage_scsi(h
);
5162 h
->busy_initializing
= 0;
5166 cciss_free_cmd_pool(h
);
5167 cciss_free_scatterlists(h
);
5168 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5169 free_irq(h
->intr
[h
->intr_mode
], h
);
5171 unregister_blkdev(h
->major
, h
->devname
);
5173 cciss_destroy_hba_sysfs_entry(h
);
5175 pci_release_regions(pdev
);
5176 clean_no_release_regions
:
5177 h
->busy_initializing
= 0;
5180 * Deliberately omit pci_disable_device(): it does something nasty to
5181 * Smart Array controllers that pci_enable_device does not undo
5183 pci_set_drvdata(pdev
, NULL
);
5188 static void cciss_shutdown(struct pci_dev
*pdev
)
5194 h
= pci_get_drvdata(pdev
);
5195 flush_buf
= kzalloc(4, GFP_KERNEL
);
5197 dev_warn(&h
->pdev
->dev
, "cache not flushed, out of memory.\n");
5200 /* write all data in the battery backed cache to disk */
5201 return_code
= sendcmd_withirq(h
, CCISS_CACHE_FLUSH
, flush_buf
,
5202 4, 0, CTLR_LUNID
, TYPE_CMD
);
5204 if (return_code
!= IO_OK
)
5205 dev_warn(&h
->pdev
->dev
, "Error flushing cache\n");
5206 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5207 free_irq(h
->intr
[h
->intr_mode
], h
);
5210 static int __devinit
cciss_enter_simple_mode(struct ctlr_info
*h
)
5214 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
5215 if (!(trans_support
& SIMPLE_MODE
))
5218 h
->max_commands
= readl(&(h
->cfgtable
->CmdsOutMax
));
5219 writel(CFGTBL_Trans_Simple
, &(h
->cfgtable
->HostWrite
.TransportRequest
));
5220 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
5221 cciss_wait_for_mode_change_ack(h
);
5223 if (!(readl(&(h
->cfgtable
->TransportActive
)) & CFGTBL_Trans_Simple
)) {
5224 dev_warn(&h
->pdev
->dev
, "unable to get board into simple mode\n");
5227 h
->transMethod
= CFGTBL_Trans_Simple
;
5232 static void __devexit
cciss_remove_one(struct pci_dev
*pdev
)
5237 if (pci_get_drvdata(pdev
) == NULL
) {
5238 dev_err(&pdev
->dev
, "Unable to remove device\n");
5242 h
= pci_get_drvdata(pdev
);
5244 if (hba
[i
] == NULL
) {
5245 dev_err(&pdev
->dev
, "device appears to already be removed\n");
5249 mutex_lock(&h
->busy_shutting_down
);
5251 remove_from_scan_list(h
);
5252 remove_proc_entry(h
->devname
, proc_cciss
);
5253 unregister_blkdev(h
->major
, h
->devname
);
5255 /* remove it from the disk list */
5256 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
5257 struct gendisk
*disk
= h
->gendisk
[j
];
5259 struct request_queue
*q
= disk
->queue
;
5261 if (disk
->flags
& GENHD_FL_UP
) {
5262 cciss_destroy_ld_sysfs_entry(h
, j
, 1);
5266 blk_cleanup_queue(q
);
5270 #ifdef CONFIG_CISS_SCSI_TAPE
5271 cciss_unregister_scsi(h
); /* unhook from SCSI subsystem */
5274 cciss_shutdown(pdev
);
5276 #ifdef CONFIG_PCI_MSI
5278 pci_disable_msix(h
->pdev
);
5279 else if (h
->msi_vector
)
5280 pci_disable_msi(h
->pdev
);
5281 #endif /* CONFIG_PCI_MSI */
5283 iounmap(h
->transtable
);
5284 iounmap(h
->cfgtable
);
5287 cciss_free_cmd_pool(h
);
5288 /* Free up sg elements */
5289 for (j
= 0; j
< h
->nr_cmds
; j
++)
5290 kfree(h
->scatter_list
[j
]);
5291 kfree(h
->scatter_list
);
5292 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5293 kfree(h
->blockFetchTable
);
5295 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
5296 h
->reply_pool
, h
->reply_pool_dhandle
);
5298 * Deliberately omit pci_disable_device(): it does something nasty to
5299 * Smart Array controllers that pci_enable_device does not undo
5301 pci_release_regions(pdev
);
5302 pci_set_drvdata(pdev
, NULL
);
5303 cciss_destroy_hba_sysfs_entry(h
);
5304 mutex_unlock(&h
->busy_shutting_down
);
5308 static struct pci_driver cciss_pci_driver
= {
5310 .probe
= cciss_init_one
,
5311 .remove
= __devexit_p(cciss_remove_one
),
5312 .id_table
= cciss_pci_device_id
, /* id_table */
5313 .shutdown
= cciss_shutdown
,
5317 * This is it. Register the PCI driver information for the cards we control
5318 * the OS will call our registered routines when it finds one of our cards.
5320 static int __init
cciss_init(void)
5325 * The hardware requires that commands are aligned on a 64-bit
5326 * boundary. Given that we use pci_alloc_consistent() to allocate an
5327 * array of them, the size must be a multiple of 8 bytes.
5329 BUILD_BUG_ON(sizeof(CommandList_struct
) % COMMANDLIST_ALIGNMENT
);
5330 printk(KERN_INFO DRIVER_NAME
"\n");
5332 err
= bus_register(&cciss_bus_type
);
5336 /* Start the scan thread */
5337 cciss_scan_thread
= kthread_run(scan_thread
, NULL
, "cciss_scan");
5338 if (IS_ERR(cciss_scan_thread
)) {
5339 err
= PTR_ERR(cciss_scan_thread
);
5340 goto err_bus_unregister
;
5343 /* Register for our PCI devices */
5344 err
= pci_register_driver(&cciss_pci_driver
);
5346 goto err_thread_stop
;
5351 kthread_stop(cciss_scan_thread
);
5353 bus_unregister(&cciss_bus_type
);
5358 static void __exit
cciss_cleanup(void)
5362 pci_unregister_driver(&cciss_pci_driver
);
5363 /* double check that all controller entrys have been removed */
5364 for (i
= 0; i
< MAX_CTLR
; i
++) {
5365 if (hba
[i
] != NULL
) {
5366 dev_warn(&hba
[i
]->pdev
->dev
,
5367 "had to remove controller\n");
5368 cciss_remove_one(hba
[i
]->pdev
);
5371 kthread_stop(cciss_scan_thread
);
5373 remove_proc_entry("driver/cciss", NULL
);
5374 bus_unregister(&cciss_bus_type
);
5377 module_init(cciss_init
);
5378 module_exit(cciss_cleanup
);