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 void 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 cciss_interrupt_mode(ctlr_info_t
*);
185 static int 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 cciss_find_cfg_addrs(struct pci_dev
*pdev
, void __iomem
*vaddr
,
203 u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
205 static int 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 int write_driver_ver_to_cfgtable(CfgTable_struct __iomem
*cfgtable
);
210 /* performant mode helper functions */
211 static void calc_bucket_map(int *bucket
, int num_buckets
, int nsgs
,
213 static void cciss_put_controller_into_performant_mode(ctlr_info_t
*h
);
215 #ifdef CONFIG_PROC_FS
216 static void cciss_procinit(ctlr_info_t
*h
);
218 static void cciss_procinit(ctlr_info_t
*h
)
221 #endif /* CONFIG_PROC_FS */
224 static int cciss_compat_ioctl(struct block_device
*, fmode_t
,
225 unsigned, unsigned long);
228 static const struct block_device_operations cciss_fops
= {
229 .owner
= THIS_MODULE
,
230 .open
= cciss_unlocked_open
,
231 .release
= cciss_release
,
233 .getgeo
= cciss_getgeo
,
235 .compat_ioctl
= cciss_compat_ioctl
,
237 .revalidate_disk
= cciss_revalidate
,
240 /* set_performant_mode: Modify the tag for cciss performant
241 * set bit 0 for pull model, bits 3-1 for block fetch
244 static void set_performant_mode(ctlr_info_t
*h
, CommandList_struct
*c
)
246 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
247 c
->busaddr
|= 1 | (h
->blockFetchTable
[c
->Header
.SGList
] << 1);
251 * Enqueuing and dequeuing functions for cmdlists.
253 static inline void addQ(struct list_head
*list
, CommandList_struct
*c
)
255 list_add_tail(&c
->list
, list
);
258 static inline void removeQ(CommandList_struct
*c
)
261 * After kexec/dump some commands might still
262 * be in flight, which the firmware will try
263 * to complete. Resetting the firmware doesn't work
264 * with old fw revisions, so we have to mark
265 * them off as 'stale' to prevent the driver from
268 if (WARN_ON(list_empty(&c
->list
))) {
269 c
->cmd_type
= CMD_MSG_STALE
;
273 list_del_init(&c
->list
);
276 static void enqueue_cmd_and_start_io(ctlr_info_t
*h
,
277 CommandList_struct
*c
)
280 set_performant_mode(h
, c
);
281 spin_lock_irqsave(&h
->lock
, flags
);
284 if (h
->Qdepth
> h
->maxQsinceinit
)
285 h
->maxQsinceinit
= h
->Qdepth
;
287 spin_unlock_irqrestore(&h
->lock
, flags
);
290 static void cciss_free_sg_chain_blocks(SGDescriptor_struct
**cmd_sg_list
,
297 for (i
= 0; i
< nr_cmds
; i
++) {
298 kfree(cmd_sg_list
[i
]);
299 cmd_sg_list
[i
] = NULL
;
304 static SGDescriptor_struct
**cciss_allocate_sg_chain_blocks(
305 ctlr_info_t
*h
, int chainsize
, int nr_cmds
)
308 SGDescriptor_struct
**cmd_sg_list
;
313 cmd_sg_list
= kmalloc(sizeof(*cmd_sg_list
) * nr_cmds
, GFP_KERNEL
);
317 /* Build up chain blocks for each command */
318 for (j
= 0; j
< nr_cmds
; j
++) {
319 /* Need a block of chainsized s/g elements. */
320 cmd_sg_list
[j
] = kmalloc((chainsize
*
321 sizeof(*cmd_sg_list
[j
])), GFP_KERNEL
);
322 if (!cmd_sg_list
[j
]) {
323 dev_err(&h
->pdev
->dev
, "Cannot get memory "
324 "for s/g chains.\n");
330 cciss_free_sg_chain_blocks(cmd_sg_list
, nr_cmds
);
334 static void cciss_unmap_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
)
336 SGDescriptor_struct
*chain_sg
;
339 if (c
->Header
.SGTotal
<= h
->max_cmd_sgentries
)
342 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
343 temp64
.val32
.lower
= chain_sg
->Addr
.lower
;
344 temp64
.val32
.upper
= chain_sg
->Addr
.upper
;
345 pci_unmap_single(h
->pdev
, temp64
.val
, chain_sg
->Len
, PCI_DMA_TODEVICE
);
348 static void cciss_map_sg_chain_block(ctlr_info_t
*h
, CommandList_struct
*c
,
349 SGDescriptor_struct
*chain_block
, int len
)
351 SGDescriptor_struct
*chain_sg
;
354 chain_sg
= &c
->SG
[h
->max_cmd_sgentries
- 1];
355 chain_sg
->Ext
= CCISS_SG_CHAIN
;
357 temp64
.val
= pci_map_single(h
->pdev
, chain_block
, len
,
359 chain_sg
->Addr
.lower
= temp64
.val32
.lower
;
360 chain_sg
->Addr
.upper
= temp64
.val32
.upper
;
363 #include "cciss_scsi.c" /* For SCSI tape support */
365 static const char *raid_label
[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
368 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1)
370 #ifdef CONFIG_PROC_FS
373 * Report information about this controller.
375 #define ENG_GIG 1000000000
376 #define ENG_GIG_FACTOR (ENG_GIG/512)
377 #define ENGAGE_SCSI "engage scsi"
379 static void cciss_seq_show_header(struct seq_file
*seq
)
381 ctlr_info_t
*h
= seq
->private;
383 seq_printf(seq
, "%s: HP %s Controller\n"
384 "Board ID: 0x%08lx\n"
385 "Firmware Version: %c%c%c%c\n"
387 "Logical drives: %d\n"
388 "Current Q depth: %d\n"
389 "Current # commands on controller: %d\n"
390 "Max Q depth since init: %d\n"
391 "Max # commands on controller since init: %d\n"
392 "Max SG entries since init: %d\n",
395 (unsigned long)h
->board_id
,
396 h
->firm_ver
[0], h
->firm_ver
[1], h
->firm_ver
[2],
397 h
->firm_ver
[3], (unsigned int)h
->intr
[h
->intr_mode
],
399 h
->Qdepth
, h
->commands_outstanding
,
400 h
->maxQsinceinit
, h
->max_outstanding
, h
->maxSG
);
402 #ifdef CONFIG_CISS_SCSI_TAPE
403 cciss_seq_tape_report(seq
, h
);
404 #endif /* CONFIG_CISS_SCSI_TAPE */
407 static void *cciss_seq_start(struct seq_file
*seq
, loff_t
*pos
)
409 ctlr_info_t
*h
= seq
->private;
412 /* prevent displaying bogus info during configuration
413 * or deconfiguration of a logical volume
415 spin_lock_irqsave(&h
->lock
, flags
);
416 if (h
->busy_configuring
) {
417 spin_unlock_irqrestore(&h
->lock
, flags
);
418 return ERR_PTR(-EBUSY
);
420 h
->busy_configuring
= 1;
421 spin_unlock_irqrestore(&h
->lock
, flags
);
424 cciss_seq_show_header(seq
);
429 static int cciss_seq_show(struct seq_file
*seq
, void *v
)
431 sector_t vol_sz
, vol_sz_frac
;
432 ctlr_info_t
*h
= seq
->private;
433 unsigned ctlr
= h
->ctlr
;
435 drive_info_struct
*drv
= h
->drv
[*pos
];
437 if (*pos
> h
->highest_lun
)
440 if (drv
== NULL
) /* it's possible for h->drv[] to have holes. */
446 vol_sz
= drv
->nr_blocks
;
447 vol_sz_frac
= sector_div(vol_sz
, ENG_GIG_FACTOR
);
449 sector_div(vol_sz_frac
, ENG_GIG_FACTOR
);
451 if (drv
->raid_level
< 0 || drv
->raid_level
> RAID_UNKNOWN
)
452 drv
->raid_level
= RAID_UNKNOWN
;
453 seq_printf(seq
, "cciss/c%dd%d:"
454 "\t%4u.%02uGB\tRAID %s\n",
455 ctlr
, (int) *pos
, (int)vol_sz
, (int)vol_sz_frac
,
456 raid_label
[drv
->raid_level
]);
460 static void *cciss_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
462 ctlr_info_t
*h
= seq
->private;
464 if (*pos
> h
->highest_lun
)
471 static void cciss_seq_stop(struct seq_file
*seq
, void *v
)
473 ctlr_info_t
*h
= seq
->private;
475 /* Only reset h->busy_configuring if we succeeded in setting
476 * it during cciss_seq_start. */
477 if (v
== ERR_PTR(-EBUSY
))
480 h
->busy_configuring
= 0;
483 static const struct seq_operations cciss_seq_ops
= {
484 .start
= cciss_seq_start
,
485 .show
= cciss_seq_show
,
486 .next
= cciss_seq_next
,
487 .stop
= cciss_seq_stop
,
490 static int cciss_seq_open(struct inode
*inode
, struct file
*file
)
492 int ret
= seq_open(file
, &cciss_seq_ops
);
493 struct seq_file
*seq
= file
->private_data
;
496 seq
->private = PDE_DATA(inode
);
502 cciss_proc_write(struct file
*file
, const char __user
*buf
,
503 size_t length
, loff_t
*ppos
)
508 #ifndef CONFIG_CISS_SCSI_TAPE
512 if (!buf
|| length
> PAGE_SIZE
- 1)
515 buffer
= (char *)__get_free_page(GFP_KERNEL
);
520 if (copy_from_user(buffer
, buf
, length
))
522 buffer
[length
] = '\0';
524 #ifdef CONFIG_CISS_SCSI_TAPE
525 if (strncmp(ENGAGE_SCSI
, buffer
, sizeof ENGAGE_SCSI
- 1) == 0) {
526 struct seq_file
*seq
= file
->private_data
;
527 ctlr_info_t
*h
= seq
->private;
529 err
= cciss_engage_scsi(h
);
533 #endif /* CONFIG_CISS_SCSI_TAPE */
535 /* might be nice to have "disengage" too, but it's not
536 safely possible. (only 1 module use count, lock issues.) */
539 free_page((unsigned long)buffer
);
543 static const struct file_operations cciss_proc_fops
= {
544 .owner
= THIS_MODULE
,
545 .open
= cciss_seq_open
,
548 .release
= seq_release
,
549 .write
= cciss_proc_write
,
552 static void cciss_procinit(ctlr_info_t
*h
)
554 struct proc_dir_entry
*pde
;
556 if (proc_cciss
== NULL
)
557 proc_cciss
= proc_mkdir("driver/cciss", NULL
);
560 pde
= proc_create_data(h
->devname
, S_IWUSR
| S_IRUSR
| S_IRGRP
|
562 &cciss_proc_fops
, h
);
564 #endif /* CONFIG_PROC_FS */
566 #define MAX_PRODUCT_NAME_LEN 19
568 #define to_hba(n) container_of(n, struct ctlr_info, dev)
569 #define to_drv(n) container_of(n, drive_info_struct, dev)
571 /* List of controllers which cannot be hard reset on kexec with reset_devices */
572 static u32 unresettable_controller
[] = {
573 0x324a103C, /* Smart Array P712m */
574 0x324b103C, /* SmartArray P711m */
575 0x3223103C, /* Smart Array P800 */
576 0x3234103C, /* Smart Array P400 */
577 0x3235103C, /* Smart Array P400i */
578 0x3211103C, /* Smart Array E200i */
579 0x3212103C, /* Smart Array E200 */
580 0x3213103C, /* Smart Array E200i */
581 0x3214103C, /* Smart Array E200i */
582 0x3215103C, /* Smart Array E200i */
583 0x3237103C, /* Smart Array E500 */
584 0x323D103C, /* Smart Array P700m */
585 0x409C0E11, /* Smart Array 6400 */
586 0x409D0E11, /* Smart Array 6400 EM */
589 /* List of controllers which cannot even be soft reset */
590 static u32 soft_unresettable_controller
[] = {
591 0x409C0E11, /* Smart Array 6400 */
592 0x409D0E11, /* Smart Array 6400 EM */
595 static int ctlr_is_hard_resettable(u32 board_id
)
599 for (i
= 0; i
< ARRAY_SIZE(unresettable_controller
); i
++)
600 if (unresettable_controller
[i
] == board_id
)
605 static int ctlr_is_soft_resettable(u32 board_id
)
609 for (i
= 0; i
< ARRAY_SIZE(soft_unresettable_controller
); i
++)
610 if (soft_unresettable_controller
[i
] == board_id
)
615 static int ctlr_is_resettable(u32 board_id
)
617 return ctlr_is_hard_resettable(board_id
) ||
618 ctlr_is_soft_resettable(board_id
);
621 static ssize_t
host_show_resettable(struct device
*dev
,
622 struct device_attribute
*attr
,
625 struct ctlr_info
*h
= to_hba(dev
);
627 return snprintf(buf
, 20, "%d\n", ctlr_is_resettable(h
->board_id
));
629 static DEVICE_ATTR(resettable
, S_IRUGO
, host_show_resettable
, NULL
);
631 static ssize_t
host_store_rescan(struct device
*dev
,
632 struct device_attribute
*attr
,
633 const char *buf
, size_t count
)
635 struct ctlr_info
*h
= to_hba(dev
);
638 wake_up_process(cciss_scan_thread
);
639 wait_for_completion_interruptible(&h
->scan_wait
);
643 static DEVICE_ATTR(rescan
, S_IWUSR
, NULL
, host_store_rescan
);
645 static ssize_t
host_show_transport_mode(struct device
*dev
,
646 struct device_attribute
*attr
,
649 struct ctlr_info
*h
= to_hba(dev
);
651 return snprintf(buf
, 20, "%s\n",
652 h
->transMethod
& CFGTBL_Trans_Performant
?
653 "performant" : "simple");
655 static DEVICE_ATTR(transport_mode
, S_IRUGO
, host_show_transport_mode
, NULL
);
657 static ssize_t
dev_show_unique_id(struct device
*dev
,
658 struct device_attribute
*attr
,
661 drive_info_struct
*drv
= to_drv(dev
);
662 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
667 spin_lock_irqsave(&h
->lock
, flags
);
668 if (h
->busy_configuring
)
671 memcpy(sn
, drv
->serial_no
, sizeof(sn
));
672 spin_unlock_irqrestore(&h
->lock
, flags
);
677 return snprintf(buf
, 16 * 2 + 2,
678 "%02X%02X%02X%02X%02X%02X%02X%02X"
679 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
680 sn
[0], sn
[1], sn
[2], sn
[3],
681 sn
[4], sn
[5], sn
[6], sn
[7],
682 sn
[8], sn
[9], sn
[10], sn
[11],
683 sn
[12], sn
[13], sn
[14], sn
[15]);
685 static DEVICE_ATTR(unique_id
, S_IRUGO
, dev_show_unique_id
, NULL
);
687 static ssize_t
dev_show_vendor(struct device
*dev
,
688 struct device_attribute
*attr
,
691 drive_info_struct
*drv
= to_drv(dev
);
692 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
693 char vendor
[VENDOR_LEN
+ 1];
697 spin_lock_irqsave(&h
->lock
, flags
);
698 if (h
->busy_configuring
)
701 memcpy(vendor
, drv
->vendor
, VENDOR_LEN
+ 1);
702 spin_unlock_irqrestore(&h
->lock
, flags
);
707 return snprintf(buf
, sizeof(vendor
) + 1, "%s\n", drv
->vendor
);
709 static DEVICE_ATTR(vendor
, S_IRUGO
, dev_show_vendor
, NULL
);
711 static ssize_t
dev_show_model(struct device
*dev
,
712 struct device_attribute
*attr
,
715 drive_info_struct
*drv
= to_drv(dev
);
716 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
717 char model
[MODEL_LEN
+ 1];
721 spin_lock_irqsave(&h
->lock
, flags
);
722 if (h
->busy_configuring
)
725 memcpy(model
, drv
->model
, MODEL_LEN
+ 1);
726 spin_unlock_irqrestore(&h
->lock
, flags
);
731 return snprintf(buf
, sizeof(model
) + 1, "%s\n", drv
->model
);
733 static DEVICE_ATTR(model
, S_IRUGO
, dev_show_model
, NULL
);
735 static ssize_t
dev_show_rev(struct device
*dev
,
736 struct device_attribute
*attr
,
739 drive_info_struct
*drv
= to_drv(dev
);
740 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
741 char rev
[REV_LEN
+ 1];
745 spin_lock_irqsave(&h
->lock
, flags
);
746 if (h
->busy_configuring
)
749 memcpy(rev
, drv
->rev
, REV_LEN
+ 1);
750 spin_unlock_irqrestore(&h
->lock
, flags
);
755 return snprintf(buf
, sizeof(rev
) + 1, "%s\n", drv
->rev
);
757 static DEVICE_ATTR(rev
, S_IRUGO
, dev_show_rev
, NULL
);
759 static ssize_t
cciss_show_lunid(struct device
*dev
,
760 struct device_attribute
*attr
, char *buf
)
762 drive_info_struct
*drv
= to_drv(dev
);
763 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
765 unsigned char lunid
[8];
767 spin_lock_irqsave(&h
->lock
, flags
);
768 if (h
->busy_configuring
) {
769 spin_unlock_irqrestore(&h
->lock
, flags
);
773 spin_unlock_irqrestore(&h
->lock
, flags
);
776 memcpy(lunid
, drv
->LunID
, sizeof(lunid
));
777 spin_unlock_irqrestore(&h
->lock
, flags
);
778 return snprintf(buf
, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
779 lunid
[0], lunid
[1], lunid
[2], lunid
[3],
780 lunid
[4], lunid
[5], lunid
[6], lunid
[7]);
782 static DEVICE_ATTR(lunid
, S_IRUGO
, cciss_show_lunid
, NULL
);
784 static ssize_t
cciss_show_raid_level(struct device
*dev
,
785 struct device_attribute
*attr
, char *buf
)
787 drive_info_struct
*drv
= to_drv(dev
);
788 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
792 spin_lock_irqsave(&h
->lock
, flags
);
793 if (h
->busy_configuring
) {
794 spin_unlock_irqrestore(&h
->lock
, flags
);
797 raid
= drv
->raid_level
;
798 spin_unlock_irqrestore(&h
->lock
, flags
);
799 if (raid
< 0 || raid
> RAID_UNKNOWN
)
802 return snprintf(buf
, strlen(raid_label
[raid
]) + 7, "RAID %s\n",
805 static DEVICE_ATTR(raid_level
, S_IRUGO
, cciss_show_raid_level
, NULL
);
807 static ssize_t
cciss_show_usage_count(struct device
*dev
,
808 struct device_attribute
*attr
, char *buf
)
810 drive_info_struct
*drv
= to_drv(dev
);
811 struct ctlr_info
*h
= to_hba(drv
->dev
.parent
);
815 spin_lock_irqsave(&h
->lock
, flags
);
816 if (h
->busy_configuring
) {
817 spin_unlock_irqrestore(&h
->lock
, flags
);
820 count
= drv
->usage_count
;
821 spin_unlock_irqrestore(&h
->lock
, flags
);
822 return snprintf(buf
, 20, "%d\n", count
);
824 static DEVICE_ATTR(usage_count
, S_IRUGO
, cciss_show_usage_count
, NULL
);
826 static struct attribute
*cciss_host_attrs
[] = {
827 &dev_attr_rescan
.attr
,
828 &dev_attr_resettable
.attr
,
829 &dev_attr_transport_mode
.attr
,
833 static struct attribute_group cciss_host_attr_group
= {
834 .attrs
= cciss_host_attrs
,
837 static const struct attribute_group
*cciss_host_attr_groups
[] = {
838 &cciss_host_attr_group
,
842 static struct device_type cciss_host_type
= {
843 .name
= "cciss_host",
844 .groups
= cciss_host_attr_groups
,
845 .release
= cciss_hba_release
,
848 static struct attribute
*cciss_dev_attrs
[] = {
849 &dev_attr_unique_id
.attr
,
850 &dev_attr_model
.attr
,
851 &dev_attr_vendor
.attr
,
853 &dev_attr_lunid
.attr
,
854 &dev_attr_raid_level
.attr
,
855 &dev_attr_usage_count
.attr
,
859 static struct attribute_group cciss_dev_attr_group
= {
860 .attrs
= cciss_dev_attrs
,
863 static const struct attribute_group
*cciss_dev_attr_groups
[] = {
864 &cciss_dev_attr_group
,
868 static struct device_type cciss_dev_type
= {
869 .name
= "cciss_device",
870 .groups
= cciss_dev_attr_groups
,
871 .release
= cciss_device_release
,
874 static struct bus_type cciss_bus_type
= {
879 * cciss_hba_release is called when the reference count
880 * of h->dev goes to zero.
882 static void cciss_hba_release(struct device
*dev
)
885 * nothing to do, but need this to avoid a warning
886 * about not having a release handler from lib/kref.c.
891 * Initialize sysfs entry for each controller. This sets up and registers
892 * the 'cciss#' directory for each individual controller under
893 * /sys/bus/pci/devices/<dev>/.
895 static int cciss_create_hba_sysfs_entry(struct ctlr_info
*h
)
897 device_initialize(&h
->dev
);
898 h
->dev
.type
= &cciss_host_type
;
899 h
->dev
.bus
= &cciss_bus_type
;
900 dev_set_name(&h
->dev
, "%s", h
->devname
);
901 h
->dev
.parent
= &h
->pdev
->dev
;
903 return device_add(&h
->dev
);
907 * Remove sysfs entries for an hba.
909 static void cciss_destroy_hba_sysfs_entry(struct ctlr_info
*h
)
912 put_device(&h
->dev
); /* final put. */
915 /* cciss_device_release is called when the reference count
916 * of h->drv[x]dev goes to zero.
918 static void cciss_device_release(struct device
*dev
)
920 drive_info_struct
*drv
= to_drv(dev
);
925 * Initialize sysfs for each logical drive. This sets up and registers
926 * the 'c#d#' directory for each individual logical drive under
927 * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from
928 * /sys/block/cciss!c#d# to this entry.
930 static long cciss_create_ld_sysfs_entry(struct ctlr_info
*h
,
935 if (h
->drv
[drv_index
]->device_initialized
)
938 dev
= &h
->drv
[drv_index
]->dev
;
939 device_initialize(dev
);
940 dev
->type
= &cciss_dev_type
;
941 dev
->bus
= &cciss_bus_type
;
942 dev_set_name(dev
, "c%dd%d", h
->ctlr
, drv_index
);
943 dev
->parent
= &h
->dev
;
944 h
->drv
[drv_index
]->device_initialized
= 1;
945 return device_add(dev
);
949 * Remove sysfs entries for a logical drive.
951 static void cciss_destroy_ld_sysfs_entry(struct ctlr_info
*h
, int drv_index
,
954 struct device
*dev
= &h
->drv
[drv_index
]->dev
;
956 /* special case for c*d0, we only destroy it on controller exit */
957 if (drv_index
== 0 && !ctlr_exiting
)
961 put_device(dev
); /* the "final" put. */
962 h
->drv
[drv_index
] = NULL
;
966 * For operations that cannot sleep, a command block is allocated at init,
967 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
968 * which ones are free or in use.
970 static CommandList_struct
*cmd_alloc(ctlr_info_t
*h
)
972 CommandList_struct
*c
;
975 dma_addr_t cmd_dma_handle
, err_dma_handle
;
978 i
= find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
);
981 } while (test_and_set_bit(i
, h
->cmd_pool_bits
) != 0);
983 memset(c
, 0, sizeof(CommandList_struct
));
984 cmd_dma_handle
= h
->cmd_pool_dhandle
+ i
* sizeof(CommandList_struct
);
985 c
->err_info
= h
->errinfo_pool
+ i
;
986 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
987 err_dma_handle
= h
->errinfo_pool_dhandle
988 + i
* sizeof(ErrorInfo_struct
);
993 INIT_LIST_HEAD(&c
->list
);
994 c
->busaddr
= (__u32
) cmd_dma_handle
;
995 temp64
.val
= (__u64
) err_dma_handle
;
996 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
997 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
998 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
1004 /* allocate a command using pci_alloc_consistent, used for ioctls,
1005 * etc., not for the main i/o path.
1007 static CommandList_struct
*cmd_special_alloc(ctlr_info_t
*h
)
1009 CommandList_struct
*c
;
1011 dma_addr_t cmd_dma_handle
, err_dma_handle
;
1013 c
= (CommandList_struct
*) pci_alloc_consistent(h
->pdev
,
1014 sizeof(CommandList_struct
), &cmd_dma_handle
);
1017 memset(c
, 0, sizeof(CommandList_struct
));
1021 c
->err_info
= (ErrorInfo_struct
*)
1022 pci_alloc_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
1025 if (c
->err_info
== NULL
) {
1026 pci_free_consistent(h
->pdev
,
1027 sizeof(CommandList_struct
), c
, cmd_dma_handle
);
1030 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
1032 INIT_LIST_HEAD(&c
->list
);
1033 c
->busaddr
= (__u32
) cmd_dma_handle
;
1034 temp64
.val
= (__u64
) err_dma_handle
;
1035 c
->ErrDesc
.Addr
.lower
= temp64
.val32
.lower
;
1036 c
->ErrDesc
.Addr
.upper
= temp64
.val32
.upper
;
1037 c
->ErrDesc
.Len
= sizeof(ErrorInfo_struct
);
1043 static void cmd_free(ctlr_info_t
*h
, CommandList_struct
*c
)
1047 i
= c
- h
->cmd_pool
;
1048 clear_bit(i
, h
->cmd_pool_bits
);
1052 static void cmd_special_free(ctlr_info_t
*h
, CommandList_struct
*c
)
1056 temp64
.val32
.lower
= c
->ErrDesc
.Addr
.lower
;
1057 temp64
.val32
.upper
= c
->ErrDesc
.Addr
.upper
;
1058 pci_free_consistent(h
->pdev
, sizeof(ErrorInfo_struct
),
1059 c
->err_info
, (dma_addr_t
) temp64
.val
);
1060 pci_free_consistent(h
->pdev
, sizeof(CommandList_struct
), c
,
1061 (dma_addr_t
) cciss_tag_discard_error_bits(h
, (u32
) c
->busaddr
));
1064 static inline ctlr_info_t
*get_host(struct gendisk
*disk
)
1066 return disk
->queue
->queuedata
;
1069 static inline drive_info_struct
*get_drv(struct gendisk
*disk
)
1071 return disk
->private_data
;
1075 * Open. Make sure the device is really there.
1077 static int cciss_open(struct block_device
*bdev
, fmode_t mode
)
1079 ctlr_info_t
*h
= get_host(bdev
->bd_disk
);
1080 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1082 dev_dbg(&h
->pdev
->dev
, "cciss_open %s\n", bdev
->bd_disk
->disk_name
);
1083 if (drv
->busy_configuring
)
1086 * Root is allowed to open raw volume zero even if it's not configured
1087 * so array config can still work. Root is also allowed to open any
1088 * volume that has a LUN ID, so it can issue IOCTL to reread the
1089 * disk information. I don't think I really like this
1090 * but I'm already using way to many device nodes to claim another one
1091 * for "raw controller".
1093 if (drv
->heads
== 0) {
1094 if (MINOR(bdev
->bd_dev
) != 0) { /* not node 0? */
1095 /* if not node 0 make sure it is a partition = 0 */
1096 if (MINOR(bdev
->bd_dev
) & 0x0f) {
1098 /* if it is, make sure we have a LUN ID */
1099 } else if (memcmp(drv
->LunID
, CTLR_LUNID
,
1100 sizeof(drv
->LunID
))) {
1104 if (!capable(CAP_SYS_ADMIN
))
1112 static int cciss_unlocked_open(struct block_device
*bdev
, fmode_t mode
)
1116 mutex_lock(&cciss_mutex
);
1117 ret
= cciss_open(bdev
, mode
);
1118 mutex_unlock(&cciss_mutex
);
1124 * Close. Sync first.
1126 static void cciss_release(struct gendisk
*disk
, fmode_t mode
)
1129 drive_info_struct
*drv
;
1131 mutex_lock(&cciss_mutex
);
1133 drv
= get_drv(disk
);
1134 dev_dbg(&h
->pdev
->dev
, "cciss_release %s\n", disk
->disk_name
);
1137 mutex_unlock(&cciss_mutex
);
1140 static int do_ioctl(struct block_device
*bdev
, fmode_t mode
,
1141 unsigned cmd
, unsigned long arg
)
1144 mutex_lock(&cciss_mutex
);
1145 ret
= cciss_ioctl(bdev
, mode
, cmd
, arg
);
1146 mutex_unlock(&cciss_mutex
);
1150 #ifdef CONFIG_COMPAT
1152 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1153 unsigned cmd
, unsigned long arg
);
1154 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1155 unsigned cmd
, unsigned long arg
);
1157 static int cciss_compat_ioctl(struct block_device
*bdev
, fmode_t mode
,
1158 unsigned cmd
, unsigned long arg
)
1161 case CCISS_GETPCIINFO
:
1162 case CCISS_GETINTINFO
:
1163 case CCISS_SETINTINFO
:
1164 case CCISS_GETNODENAME
:
1165 case CCISS_SETNODENAME
:
1166 case CCISS_GETHEARTBEAT
:
1167 case CCISS_GETBUSTYPES
:
1168 case CCISS_GETFIRMVER
:
1169 case CCISS_GETDRIVVER
:
1170 case CCISS_REVALIDVOLS
:
1171 case CCISS_DEREGDISK
:
1172 case CCISS_REGNEWDISK
:
1174 case CCISS_RESCANDISK
:
1175 case CCISS_GETLUNINFO
:
1176 return do_ioctl(bdev
, mode
, cmd
, arg
);
1178 case CCISS_PASSTHRU32
:
1179 return cciss_ioctl32_passthru(bdev
, mode
, cmd
, arg
);
1180 case CCISS_BIG_PASSTHRU32
:
1181 return cciss_ioctl32_big_passthru(bdev
, mode
, cmd
, arg
);
1184 return -ENOIOCTLCMD
;
1188 static int cciss_ioctl32_passthru(struct block_device
*bdev
, fmode_t mode
,
1189 unsigned cmd
, unsigned long arg
)
1191 IOCTL32_Command_struct __user
*arg32
=
1192 (IOCTL32_Command_struct __user
*) arg
;
1193 IOCTL_Command_struct arg64
;
1194 IOCTL_Command_struct __user
*p
= compat_alloc_user_space(sizeof(arg64
));
1200 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1201 sizeof(arg64
.LUN_info
));
1203 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1204 sizeof(arg64
.Request
));
1206 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1207 sizeof(arg64
.error_info
));
1208 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1209 err
|= get_user(cp
, &arg32
->buf
);
1210 arg64
.buf
= compat_ptr(cp
);
1211 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1216 err
= do_ioctl(bdev
, mode
, CCISS_PASSTHRU
, (unsigned long)p
);
1220 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1221 sizeof(arg32
->error_info
));
1227 static int cciss_ioctl32_big_passthru(struct block_device
*bdev
, fmode_t mode
,
1228 unsigned cmd
, unsigned long arg
)
1230 BIG_IOCTL32_Command_struct __user
*arg32
=
1231 (BIG_IOCTL32_Command_struct __user
*) arg
;
1232 BIG_IOCTL_Command_struct arg64
;
1233 BIG_IOCTL_Command_struct __user
*p
=
1234 compat_alloc_user_space(sizeof(arg64
));
1238 memset(&arg64
, 0, sizeof(arg64
));
1241 copy_from_user(&arg64
.LUN_info
, &arg32
->LUN_info
,
1242 sizeof(arg64
.LUN_info
));
1244 copy_from_user(&arg64
.Request
, &arg32
->Request
,
1245 sizeof(arg64
.Request
));
1247 copy_from_user(&arg64
.error_info
, &arg32
->error_info
,
1248 sizeof(arg64
.error_info
));
1249 err
|= get_user(arg64
.buf_size
, &arg32
->buf_size
);
1250 err
|= get_user(arg64
.malloc_size
, &arg32
->malloc_size
);
1251 err
|= get_user(cp
, &arg32
->buf
);
1252 arg64
.buf
= compat_ptr(cp
);
1253 err
|= copy_to_user(p
, &arg64
, sizeof(arg64
));
1258 err
= do_ioctl(bdev
, mode
, CCISS_BIG_PASSTHRU
, (unsigned long)p
);
1262 copy_in_user(&arg32
->error_info
, &p
->error_info
,
1263 sizeof(arg32
->error_info
));
1270 static int cciss_getgeo(struct block_device
*bdev
, struct hd_geometry
*geo
)
1272 drive_info_struct
*drv
= get_drv(bdev
->bd_disk
);
1274 if (!drv
->cylinders
)
1277 geo
->heads
= drv
->heads
;
1278 geo
->sectors
= drv
->sectors
;
1279 geo
->cylinders
= drv
->cylinders
;
1283 static void check_ioctl_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
1285 if (c
->err_info
->CommandStatus
== CMD_TARGET_STATUS
&&
1286 c
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
)
1287 (void)check_for_unit_attention(h
, c
);
1290 static int cciss_getpciinfo(ctlr_info_t
*h
, void __user
*argp
)
1292 cciss_pci_info_struct pciinfo
;
1296 pciinfo
.domain
= pci_domain_nr(h
->pdev
->bus
);
1297 pciinfo
.bus
= h
->pdev
->bus
->number
;
1298 pciinfo
.dev_fn
= h
->pdev
->devfn
;
1299 pciinfo
.board_id
= h
->board_id
;
1300 if (copy_to_user(argp
, &pciinfo
, sizeof(cciss_pci_info_struct
)))
1305 static int cciss_getintinfo(ctlr_info_t
*h
, void __user
*argp
)
1307 cciss_coalint_struct intinfo
;
1311 intinfo
.delay
= readl(&h
->cfgtable
->HostWrite
.CoalIntDelay
);
1312 intinfo
.count
= readl(&h
->cfgtable
->HostWrite
.CoalIntCount
);
1314 (argp
, &intinfo
, sizeof(cciss_coalint_struct
)))
1319 static int cciss_setintinfo(ctlr_info_t
*h
, void __user
*argp
)
1321 cciss_coalint_struct intinfo
;
1322 unsigned long flags
;
1327 if (!capable(CAP_SYS_ADMIN
))
1329 if (copy_from_user(&intinfo
, argp
, sizeof(intinfo
)))
1331 if ((intinfo
.delay
== 0) && (intinfo
.count
== 0))
1333 spin_lock_irqsave(&h
->lock
, flags
);
1334 /* Update the field, and then ring the doorbell */
1335 writel(intinfo
.delay
, &(h
->cfgtable
->HostWrite
.CoalIntDelay
));
1336 writel(intinfo
.count
, &(h
->cfgtable
->HostWrite
.CoalIntCount
));
1337 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1339 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1340 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1342 udelay(1000); /* delay and try again */
1344 spin_unlock_irqrestore(&h
->lock
, flags
);
1345 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1350 static int cciss_getnodename(ctlr_info_t
*h
, void __user
*argp
)
1352 NodeName_type NodeName
;
1357 for (i
= 0; i
< 16; i
++)
1358 NodeName
[i
] = readb(&h
->cfgtable
->ServerName
[i
]);
1359 if (copy_to_user(argp
, NodeName
, sizeof(NodeName_type
)))
1364 static int cciss_setnodename(ctlr_info_t
*h
, void __user
*argp
)
1366 NodeName_type NodeName
;
1367 unsigned long flags
;
1372 if (!capable(CAP_SYS_ADMIN
))
1374 if (copy_from_user(NodeName
, argp
, sizeof(NodeName_type
)))
1376 spin_lock_irqsave(&h
->lock
, flags
);
1377 /* Update the field, and then ring the doorbell */
1378 for (i
= 0; i
< 16; i
++)
1379 writeb(NodeName
[i
], &h
->cfgtable
->ServerName
[i
]);
1380 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
1381 for (i
= 0; i
< MAX_IOCTL_CONFIG_WAIT
; i
++) {
1382 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
1384 udelay(1000); /* delay and try again */
1386 spin_unlock_irqrestore(&h
->lock
, flags
);
1387 if (i
>= MAX_IOCTL_CONFIG_WAIT
)
1392 static int cciss_getheartbeat(ctlr_info_t
*h
, void __user
*argp
)
1394 Heartbeat_type heartbeat
;
1398 heartbeat
= readl(&h
->cfgtable
->HeartBeat
);
1399 if (copy_to_user(argp
, &heartbeat
, sizeof(Heartbeat_type
)))
1404 static int cciss_getbustypes(ctlr_info_t
*h
, void __user
*argp
)
1406 BusTypes_type BusTypes
;
1410 BusTypes
= readl(&h
->cfgtable
->BusTypes
);
1411 if (copy_to_user(argp
, &BusTypes
, sizeof(BusTypes_type
)))
1416 static int cciss_getfirmver(ctlr_info_t
*h
, void __user
*argp
)
1418 FirmwareVer_type firmware
;
1422 memcpy(firmware
, h
->firm_ver
, 4);
1425 (argp
, firmware
, sizeof(FirmwareVer_type
)))
1430 static int cciss_getdrivver(ctlr_info_t
*h
, void __user
*argp
)
1432 DriverVer_type DriverVer
= DRIVER_VERSION
;
1436 if (copy_to_user(argp
, &DriverVer
, sizeof(DriverVer_type
)))
1441 static int cciss_getluninfo(ctlr_info_t
*h
,
1442 struct gendisk
*disk
, void __user
*argp
)
1444 LogvolInfo_struct luninfo
;
1445 drive_info_struct
*drv
= get_drv(disk
);
1449 memcpy(&luninfo
.LunID
, drv
->LunID
, sizeof(luninfo
.LunID
));
1450 luninfo
.num_opens
= drv
->usage_count
;
1451 luninfo
.num_parts
= 0;
1452 if (copy_to_user(argp
, &luninfo
, sizeof(LogvolInfo_struct
)))
1457 static int cciss_passthru(ctlr_info_t
*h
, void __user
*argp
)
1459 IOCTL_Command_struct iocommand
;
1460 CommandList_struct
*c
;
1463 DECLARE_COMPLETION_ONSTACK(wait
);
1468 if (!capable(CAP_SYS_RAWIO
))
1472 (&iocommand
, argp
, sizeof(IOCTL_Command_struct
)))
1474 if ((iocommand
.buf_size
< 1) &&
1475 (iocommand
.Request
.Type
.Direction
!= XFER_NONE
)) {
1478 if (iocommand
.buf_size
> 0) {
1479 buff
= kmalloc(iocommand
.buf_size
, GFP_KERNEL
);
1483 if (iocommand
.Request
.Type
.Direction
== XFER_WRITE
) {
1484 /* Copy the data into the buffer we created */
1485 if (copy_from_user(buff
, iocommand
.buf
, iocommand
.buf_size
)) {
1490 memset(buff
, 0, iocommand
.buf_size
);
1492 c
= cmd_special_alloc(h
);
1497 /* Fill in the command type */
1498 c
->cmd_type
= CMD_IOCTL_PEND
;
1499 /* Fill in Command Header */
1500 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
1501 if (iocommand
.buf_size
> 0) { /* buffer to fill */
1502 c
->Header
.SGList
= 1;
1503 c
->Header
.SGTotal
= 1;
1504 } else { /* no buffers to fill */
1505 c
->Header
.SGList
= 0;
1506 c
->Header
.SGTotal
= 0;
1508 c
->Header
.LUN
= iocommand
.LUN_info
;
1509 /* use the kernel address the cmd block for tag */
1510 c
->Header
.Tag
.lower
= c
->busaddr
;
1512 /* Fill in Request block */
1513 c
->Request
= iocommand
.Request
;
1515 /* Fill in the scatter gather information */
1516 if (iocommand
.buf_size
> 0) {
1517 temp64
.val
= pci_map_single(h
->pdev
, buff
,
1518 iocommand
.buf_size
, PCI_DMA_BIDIRECTIONAL
);
1519 c
->SG
[0].Addr
.lower
= temp64
.val32
.lower
;
1520 c
->SG
[0].Addr
.upper
= temp64
.val32
.upper
;
1521 c
->SG
[0].Len
= iocommand
.buf_size
;
1522 c
->SG
[0].Ext
= 0; /* we are not chaining */
1526 enqueue_cmd_and_start_io(h
, c
);
1527 wait_for_completion(&wait
);
1529 /* unlock the buffers from DMA */
1530 temp64
.val32
.lower
= c
->SG
[0].Addr
.lower
;
1531 temp64
.val32
.upper
= c
->SG
[0].Addr
.upper
;
1532 pci_unmap_single(h
->pdev
, (dma_addr_t
) temp64
.val
, iocommand
.buf_size
,
1533 PCI_DMA_BIDIRECTIONAL
);
1534 check_ioctl_unit_attention(h
, c
);
1536 /* Copy the error information out */
1537 iocommand
.error_info
= *(c
->err_info
);
1538 if (copy_to_user(argp
, &iocommand
, sizeof(IOCTL_Command_struct
))) {
1540 cmd_special_free(h
, c
);
1544 if (iocommand
.Request
.Type
.Direction
== XFER_READ
) {
1545 /* Copy the data out of the buffer we created */
1546 if (copy_to_user(iocommand
.buf
, buff
, iocommand
.buf_size
)) {
1548 cmd_special_free(h
, c
);
1553 cmd_special_free(h
, c
);
1557 static int cciss_bigpassthru(ctlr_info_t
*h
, void __user
*argp
)
1559 BIG_IOCTL_Command_struct
*ioc
;
1560 CommandList_struct
*c
;
1561 unsigned char **buff
= NULL
;
1562 int *buff_size
= NULL
;
1567 DECLARE_COMPLETION_ONSTACK(wait
);
1570 BYTE __user
*data_ptr
;
1574 if (!capable(CAP_SYS_RAWIO
))
1576 ioc
= kmalloc(sizeof(*ioc
), GFP_KERNEL
);
1581 if (copy_from_user(ioc
, argp
, sizeof(*ioc
))) {
1585 if ((ioc
->buf_size
< 1) &&
1586 (ioc
->Request
.Type
.Direction
!= XFER_NONE
)) {
1590 /* Check kmalloc limits using all SGs */
1591 if (ioc
->malloc_size
> MAX_KMALLOC_SIZE
) {
1595 if (ioc
->buf_size
> ioc
->malloc_size
* MAXSGENTRIES
) {
1599 buff
= kzalloc(MAXSGENTRIES
* sizeof(char *), GFP_KERNEL
);
1604 buff_size
= kmalloc(MAXSGENTRIES
* sizeof(int), GFP_KERNEL
);
1609 left
= ioc
->buf_size
;
1610 data_ptr
= ioc
->buf
;
1612 sz
= (left
> ioc
->malloc_size
) ? ioc
->malloc_size
: left
;
1613 buff_size
[sg_used
] = sz
;
1614 buff
[sg_used
] = kmalloc(sz
, GFP_KERNEL
);
1615 if (buff
[sg_used
] == NULL
) {
1619 if (ioc
->Request
.Type
.Direction
== XFER_WRITE
) {
1620 if (copy_from_user(buff
[sg_used
], data_ptr
, sz
)) {
1625 memset(buff
[sg_used
], 0, sz
);
1631 c
= cmd_special_alloc(h
);
1636 c
->cmd_type
= CMD_IOCTL_PEND
;
1637 c
->Header
.ReplyQueue
= 0;
1638 c
->Header
.SGList
= sg_used
;
1639 c
->Header
.SGTotal
= sg_used
;
1640 c
->Header
.LUN
= ioc
->LUN_info
;
1641 c
->Header
.Tag
.lower
= c
->busaddr
;
1643 c
->Request
= ioc
->Request
;
1644 for (i
= 0; i
< sg_used
; i
++) {
1645 temp64
.val
= pci_map_single(h
->pdev
, buff
[i
], buff_size
[i
],
1646 PCI_DMA_BIDIRECTIONAL
);
1647 c
->SG
[i
].Addr
.lower
= temp64
.val32
.lower
;
1648 c
->SG
[i
].Addr
.upper
= temp64
.val32
.upper
;
1649 c
->SG
[i
].Len
= buff_size
[i
];
1650 c
->SG
[i
].Ext
= 0; /* we are not chaining */
1653 enqueue_cmd_and_start_io(h
, c
);
1654 wait_for_completion(&wait
);
1655 /* unlock the buffers from DMA */
1656 for (i
= 0; i
< sg_used
; i
++) {
1657 temp64
.val32
.lower
= c
->SG
[i
].Addr
.lower
;
1658 temp64
.val32
.upper
= c
->SG
[i
].Addr
.upper
;
1659 pci_unmap_single(h
->pdev
,
1660 (dma_addr_t
) temp64
.val
, buff_size
[i
],
1661 PCI_DMA_BIDIRECTIONAL
);
1663 check_ioctl_unit_attention(h
, c
);
1664 /* Copy the error information out */
1665 ioc
->error_info
= *(c
->err_info
);
1666 if (copy_to_user(argp
, ioc
, sizeof(*ioc
))) {
1667 cmd_special_free(h
, c
);
1671 if (ioc
->Request
.Type
.Direction
== XFER_READ
) {
1672 /* Copy the data out of the buffer we created */
1673 BYTE __user
*ptr
= ioc
->buf
;
1674 for (i
= 0; i
< sg_used
; i
++) {
1675 if (copy_to_user(ptr
, buff
[i
], buff_size
[i
])) {
1676 cmd_special_free(h
, c
);
1680 ptr
+= buff_size
[i
];
1683 cmd_special_free(h
, c
);
1687 for (i
= 0; i
< sg_used
; i
++)
1696 static int cciss_ioctl(struct block_device
*bdev
, fmode_t mode
,
1697 unsigned int cmd
, unsigned long arg
)
1699 struct gendisk
*disk
= bdev
->bd_disk
;
1700 ctlr_info_t
*h
= get_host(disk
);
1701 void __user
*argp
= (void __user
*)arg
;
1703 dev_dbg(&h
->pdev
->dev
, "cciss_ioctl: Called with cmd=%x %lx\n",
1706 case CCISS_GETPCIINFO
:
1707 return cciss_getpciinfo(h
, argp
);
1708 case CCISS_GETINTINFO
:
1709 return cciss_getintinfo(h
, argp
);
1710 case CCISS_SETINTINFO
:
1711 return cciss_setintinfo(h
, argp
);
1712 case CCISS_GETNODENAME
:
1713 return cciss_getnodename(h
, argp
);
1714 case CCISS_SETNODENAME
:
1715 return cciss_setnodename(h
, argp
);
1716 case CCISS_GETHEARTBEAT
:
1717 return cciss_getheartbeat(h
, argp
);
1718 case CCISS_GETBUSTYPES
:
1719 return cciss_getbustypes(h
, argp
);
1720 case CCISS_GETFIRMVER
:
1721 return cciss_getfirmver(h
, argp
);
1722 case CCISS_GETDRIVVER
:
1723 return cciss_getdrivver(h
, argp
);
1724 case CCISS_DEREGDISK
:
1726 case CCISS_REVALIDVOLS
:
1727 return rebuild_lun_table(h
, 0, 1);
1728 case CCISS_GETLUNINFO
:
1729 return cciss_getluninfo(h
, disk
, argp
);
1730 case CCISS_PASSTHRU
:
1731 return cciss_passthru(h
, argp
);
1732 case CCISS_BIG_PASSTHRU
:
1733 return cciss_bigpassthru(h
, argp
);
1735 /* scsi_cmd_blk_ioctl handles these, below, though some are not */
1736 /* very meaningful for cciss. SG_IO is the main one people want. */
1738 case SG_GET_VERSION_NUM
:
1739 case SG_SET_TIMEOUT
:
1740 case SG_GET_TIMEOUT
:
1741 case SG_GET_RESERVED_SIZE
:
1742 case SG_SET_RESERVED_SIZE
:
1743 case SG_EMULATED_HOST
:
1745 case SCSI_IOCTL_SEND_COMMAND
:
1746 return scsi_cmd_blk_ioctl(bdev
, mode
, cmd
, argp
);
1748 /* scsi_cmd_blk_ioctl would normally handle these, below, but */
1749 /* they aren't a good fit for cciss, as CD-ROMs are */
1750 /* not supported, and we don't have any bus/target/lun */
1751 /* which we present to the kernel. */
1753 case CDROM_SEND_PACKET
:
1754 case CDROMCLOSETRAY
:
1756 case SCSI_IOCTL_GET_IDLUN
:
1757 case SCSI_IOCTL_GET_BUS_NUMBER
:
1763 static void cciss_check_queues(ctlr_info_t
*h
)
1765 int start_queue
= h
->next_to_run
;
1768 /* check to see if we have maxed out the number of commands that can
1769 * be placed on the queue. If so then exit. We do this check here
1770 * in case the interrupt we serviced was from an ioctl and did not
1771 * free any new commands.
1773 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
)
1776 /* We have room on the queue for more commands. Now we need to queue
1777 * them up. We will also keep track of the next queue to run so
1778 * that every queue gets a chance to be started first.
1780 for (i
= 0; i
< h
->highest_lun
+ 1; i
++) {
1781 int curr_queue
= (start_queue
+ i
) % (h
->highest_lun
+ 1);
1782 /* make sure the disk has been added and the drive is real
1783 * because this can be called from the middle of init_one.
1785 if (!h
->drv
[curr_queue
])
1787 if (!(h
->drv
[curr_queue
]->queue
) ||
1788 !(h
->drv
[curr_queue
]->heads
))
1790 blk_start_queue(h
->gendisk
[curr_queue
]->queue
);
1792 /* check to see if we have maxed out the number of commands
1793 * that can be placed on the queue.
1795 if ((find_first_zero_bit(h
->cmd_pool_bits
, h
->nr_cmds
)) == h
->nr_cmds
) {
1796 if (curr_queue
== start_queue
) {
1798 (start_queue
+ 1) % (h
->highest_lun
+ 1);
1801 h
->next_to_run
= curr_queue
;
1808 static void cciss_softirq_done(struct request
*rq
)
1810 CommandList_struct
*c
= rq
->completion_data
;
1811 ctlr_info_t
*h
= hba
[c
->ctlr
];
1812 SGDescriptor_struct
*curr_sg
= c
->SG
;
1814 unsigned long flags
;
1818 if (c
->Request
.Type
.Direction
== XFER_READ
)
1819 ddir
= PCI_DMA_FROMDEVICE
;
1821 ddir
= PCI_DMA_TODEVICE
;
1823 /* command did not need to be retried */
1824 /* unmap the DMA mapping for all the scatter gather elements */
1825 for (i
= 0; i
< c
->Header
.SGList
; i
++) {
1826 if (curr_sg
[sg_index
].Ext
== CCISS_SG_CHAIN
) {
1827 cciss_unmap_sg_chain_block(h
, c
);
1828 /* Point to the next block */
1829 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
1832 temp64
.val32
.lower
= curr_sg
[sg_index
].Addr
.lower
;
1833 temp64
.val32
.upper
= curr_sg
[sg_index
].Addr
.upper
;
1834 pci_unmap_page(h
->pdev
, temp64
.val
, curr_sg
[sg_index
].Len
,
1839 dev_dbg(&h
->pdev
->dev
, "Done with %p\n", rq
);
1841 /* set the residual count for pc requests */
1842 if (rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
1843 rq
->resid_len
= c
->err_info
->ResidualCnt
;
1845 blk_end_request_all(rq
, (rq
->errors
== 0) ? 0 : -EIO
);
1847 spin_lock_irqsave(&h
->lock
, flags
);
1849 cciss_check_queues(h
);
1850 spin_unlock_irqrestore(&h
->lock
, flags
);
1853 static inline void log_unit_to_scsi3addr(ctlr_info_t
*h
,
1854 unsigned char scsi3addr
[], uint32_t log_unit
)
1856 memcpy(scsi3addr
, h
->drv
[log_unit
]->LunID
,
1857 sizeof(h
->drv
[log_unit
]->LunID
));
1860 /* This function gets the SCSI vendor, model, and revision of a logical drive
1861 * via the inquiry page 0. Model, vendor, and rev are set to empty strings if
1862 * they cannot be read.
1864 static void cciss_get_device_descr(ctlr_info_t
*h
, int logvol
,
1865 char *vendor
, char *model
, char *rev
)
1868 InquiryData_struct
*inq_buf
;
1869 unsigned char scsi3addr
[8];
1875 inq_buf
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1879 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1880 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buf
, sizeof(*inq_buf
), 0,
1881 scsi3addr
, TYPE_CMD
);
1883 memcpy(vendor
, &inq_buf
->data_byte
[8], VENDOR_LEN
);
1884 vendor
[VENDOR_LEN
] = '\0';
1885 memcpy(model
, &inq_buf
->data_byte
[16], MODEL_LEN
);
1886 model
[MODEL_LEN
] = '\0';
1887 memcpy(rev
, &inq_buf
->data_byte
[32], REV_LEN
);
1888 rev
[REV_LEN
] = '\0';
1895 /* This function gets the serial number of a logical drive via
1896 * inquiry page 0x83. Serial no. is 16 bytes. If the serial
1897 * number cannot be had, for whatever reason, 16 bytes of 0xff
1898 * are returned instead.
1900 static void cciss_get_serial_no(ctlr_info_t
*h
, int logvol
,
1901 unsigned char *serial_no
, int buflen
)
1903 #define PAGE_83_INQ_BYTES 64
1906 unsigned char scsi3addr
[8];
1910 memset(serial_no
, 0xff, buflen
);
1911 buf
= kzalloc(PAGE_83_INQ_BYTES
, GFP_KERNEL
);
1914 memset(serial_no
, 0, buflen
);
1915 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
1916 rc
= sendcmd_withirq(h
, CISS_INQUIRY
, buf
,
1917 PAGE_83_INQ_BYTES
, 0x83, scsi3addr
, TYPE_CMD
);
1919 memcpy(serial_no
, &buf
[8], buflen
);
1925 * cciss_add_disk sets up the block device queue for a logical drive
1927 static int cciss_add_disk(ctlr_info_t
*h
, struct gendisk
*disk
,
1930 disk
->queue
= blk_init_queue(do_cciss_request
, &h
->lock
);
1932 goto init_queue_failure
;
1933 sprintf(disk
->disk_name
, "cciss/c%dd%d", h
->ctlr
, drv_index
);
1934 disk
->major
= h
->major
;
1935 disk
->first_minor
= drv_index
<< NWD_SHIFT
;
1936 disk
->fops
= &cciss_fops
;
1937 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
1939 disk
->private_data
= h
->drv
[drv_index
];
1940 disk
->driverfs_dev
= &h
->drv
[drv_index
]->dev
;
1942 /* Set up queue information */
1943 blk_queue_bounce_limit(disk
->queue
, h
->pdev
->dma_mask
);
1945 /* This is a hardware imposed limit. */
1946 blk_queue_max_segments(disk
->queue
, h
->maxsgentries
);
1948 blk_queue_max_hw_sectors(disk
->queue
, h
->cciss_max_sectors
);
1950 blk_queue_softirq_done(disk
->queue
, cciss_softirq_done
);
1952 disk
->queue
->queuedata
= h
;
1954 blk_queue_logical_block_size(disk
->queue
,
1955 h
->drv
[drv_index
]->block_size
);
1957 /* Make sure all queue data is written out before */
1958 /* setting h->drv[drv_index]->queue, as setting this */
1959 /* allows the interrupt handler to start the queue */
1961 h
->drv
[drv_index
]->queue
= disk
->queue
;
1966 blk_cleanup_queue(disk
->queue
);
1972 /* This function will check the usage_count of the drive to be updated/added.
1973 * If the usage_count is zero and it is a heretofore unknown drive, or,
1974 * the drive's capacity, geometry, or serial number has changed,
1975 * then the drive information will be updated and the disk will be
1976 * re-registered with the kernel. If these conditions don't hold,
1977 * then it will be left alone for the next reboot. The exception to this
1978 * is disk 0 which will always be left registered with the kernel since it
1979 * is also the controller node. Any changes to disk 0 will show up on
1982 static void cciss_update_drive_info(ctlr_info_t
*h
, int drv_index
,
1983 int first_time
, int via_ioctl
)
1985 struct gendisk
*disk
;
1986 InquiryData_struct
*inq_buff
= NULL
;
1987 unsigned int block_size
;
1988 sector_t total_size
;
1989 unsigned long flags
= 0;
1991 drive_info_struct
*drvinfo
;
1993 /* Get information about the disk and modify the driver structure */
1994 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
1995 drvinfo
= kzalloc(sizeof(*drvinfo
), GFP_KERNEL
);
1996 if (inq_buff
== NULL
|| drvinfo
== NULL
)
1999 /* testing to see if 16-byte CDBs are already being used */
2000 if (h
->cciss_read
== CCISS_READ_16
) {
2001 cciss_read_capacity_16(h
, drv_index
,
2002 &total_size
, &block_size
);
2005 cciss_read_capacity(h
, drv_index
, &total_size
, &block_size
);
2006 /* if read_capacity returns all F's this volume is >2TB */
2007 /* in size so we switch to 16-byte CDB's for all */
2008 /* read/write ops */
2009 if (total_size
== 0xFFFFFFFFULL
) {
2010 cciss_read_capacity_16(h
, drv_index
,
2011 &total_size
, &block_size
);
2012 h
->cciss_read
= CCISS_READ_16
;
2013 h
->cciss_write
= CCISS_WRITE_16
;
2015 h
->cciss_read
= CCISS_READ_10
;
2016 h
->cciss_write
= CCISS_WRITE_10
;
2020 cciss_geometry_inquiry(h
, drv_index
, total_size
, block_size
,
2022 drvinfo
->block_size
= block_size
;
2023 drvinfo
->nr_blocks
= total_size
+ 1;
2025 cciss_get_device_descr(h
, drv_index
, drvinfo
->vendor
,
2026 drvinfo
->model
, drvinfo
->rev
);
2027 cciss_get_serial_no(h
, drv_index
, drvinfo
->serial_no
,
2028 sizeof(drvinfo
->serial_no
));
2029 /* Save the lunid in case we deregister the disk, below. */
2030 memcpy(drvinfo
->LunID
, h
->drv
[drv_index
]->LunID
,
2031 sizeof(drvinfo
->LunID
));
2033 /* Is it the same disk we already know, and nothing's changed? */
2034 if (h
->drv
[drv_index
]->raid_level
!= -1 &&
2035 ((memcmp(drvinfo
->serial_no
,
2036 h
->drv
[drv_index
]->serial_no
, 16) == 0) &&
2037 drvinfo
->block_size
== h
->drv
[drv_index
]->block_size
&&
2038 drvinfo
->nr_blocks
== h
->drv
[drv_index
]->nr_blocks
&&
2039 drvinfo
->heads
== h
->drv
[drv_index
]->heads
&&
2040 drvinfo
->sectors
== h
->drv
[drv_index
]->sectors
&&
2041 drvinfo
->cylinders
== h
->drv
[drv_index
]->cylinders
))
2042 /* The disk is unchanged, nothing to update */
2045 /* If we get here it's not the same disk, or something's changed,
2046 * so we need to * deregister it, and re-register it, if it's not
2048 * If the disk already exists then deregister it before proceeding
2049 * (unless it's the first disk (for the controller node).
2051 if (h
->drv
[drv_index
]->raid_level
!= -1 && drv_index
!= 0) {
2052 dev_warn(&h
->pdev
->dev
, "disk %d has changed.\n", drv_index
);
2053 spin_lock_irqsave(&h
->lock
, flags
);
2054 h
->drv
[drv_index
]->busy_configuring
= 1;
2055 spin_unlock_irqrestore(&h
->lock
, flags
);
2057 /* deregister_disk sets h->drv[drv_index]->queue = NULL
2058 * which keeps the interrupt handler from starting
2061 ret
= deregister_disk(h
, drv_index
, 0, via_ioctl
);
2064 /* If the disk is in use return */
2068 /* Save the new information from cciss_geometry_inquiry
2069 * and serial number inquiry. If the disk was deregistered
2070 * above, then h->drv[drv_index] will be NULL.
2072 if (h
->drv
[drv_index
] == NULL
) {
2073 drvinfo
->device_initialized
= 0;
2074 h
->drv
[drv_index
] = drvinfo
;
2075 drvinfo
= NULL
; /* so it won't be freed below. */
2077 /* special case for cxd0 */
2078 h
->drv
[drv_index
]->block_size
= drvinfo
->block_size
;
2079 h
->drv
[drv_index
]->nr_blocks
= drvinfo
->nr_blocks
;
2080 h
->drv
[drv_index
]->heads
= drvinfo
->heads
;
2081 h
->drv
[drv_index
]->sectors
= drvinfo
->sectors
;
2082 h
->drv
[drv_index
]->cylinders
= drvinfo
->cylinders
;
2083 h
->drv
[drv_index
]->raid_level
= drvinfo
->raid_level
;
2084 memcpy(h
->drv
[drv_index
]->serial_no
, drvinfo
->serial_no
, 16);
2085 memcpy(h
->drv
[drv_index
]->vendor
, drvinfo
->vendor
,
2087 memcpy(h
->drv
[drv_index
]->model
, drvinfo
->model
, MODEL_LEN
+ 1);
2088 memcpy(h
->drv
[drv_index
]->rev
, drvinfo
->rev
, REV_LEN
+ 1);
2092 disk
= h
->gendisk
[drv_index
];
2093 set_capacity(disk
, h
->drv
[drv_index
]->nr_blocks
);
2095 /* If it's not disk 0 (drv_index != 0)
2096 * or if it was disk 0, but there was previously
2097 * no actual corresponding configured logical drive
2098 * (raid_leve == -1) then we want to update the
2099 * logical drive's information.
2101 if (drv_index
|| first_time
) {
2102 if (cciss_add_disk(h
, disk
, drv_index
) != 0) {
2103 cciss_free_gendisk(h
, drv_index
);
2104 cciss_free_drive_info(h
, drv_index
);
2105 dev_warn(&h
->pdev
->dev
, "could not update disk %d\n",
2116 dev_err(&h
->pdev
->dev
, "out of memory\n");
2120 /* This function will find the first index of the controllers drive array
2121 * that has a null drv pointer and allocate the drive info struct and
2122 * will return that index This is where new drives will be added.
2123 * If the index to be returned is greater than the highest_lun index for
2124 * the controller then highest_lun is set * to this new index.
2125 * If there are no available indexes or if tha allocation fails, then -1
2126 * is returned. * "controller_node" is used to know if this is a real
2127 * logical drive, or just the controller node, which determines if this
2128 * counts towards highest_lun.
2130 static int cciss_alloc_drive_info(ctlr_info_t
*h
, int controller_node
)
2133 drive_info_struct
*drv
;
2135 /* Search for an empty slot for our drive info */
2136 for (i
= 0; i
< CISS_MAX_LUN
; i
++) {
2138 /* if not cxd0 case, and it's occupied, skip it. */
2139 if (h
->drv
[i
] && i
!= 0)
2142 * If it's cxd0 case, and drv is alloc'ed already, and a
2143 * disk is configured there, skip it.
2145 if (i
== 0 && h
->drv
[i
] && h
->drv
[i
]->raid_level
!= -1)
2149 * We've found an empty slot. Update highest_lun
2150 * provided this isn't just the fake cxd0 controller node.
2152 if (i
> h
->highest_lun
&& !controller_node
)
2155 /* If adding a real disk at cxd0, and it's already alloc'ed */
2156 if (i
== 0 && h
->drv
[i
] != NULL
)
2160 * Found an empty slot, not already alloc'ed. Allocate it.
2161 * Mark it with raid_level == -1, so we know it's new later on.
2163 drv
= kzalloc(sizeof(*drv
), GFP_KERNEL
);
2166 drv
->raid_level
= -1; /* so we know it's new */
2173 static void cciss_free_drive_info(ctlr_info_t
*h
, int drv_index
)
2175 kfree(h
->drv
[drv_index
]);
2176 h
->drv
[drv_index
] = NULL
;
2179 static void cciss_free_gendisk(ctlr_info_t
*h
, int drv_index
)
2181 put_disk(h
->gendisk
[drv_index
]);
2182 h
->gendisk
[drv_index
] = NULL
;
2185 /* cciss_add_gendisk finds a free hba[]->drv structure
2186 * and allocates a gendisk if needed, and sets the lunid
2187 * in the drvinfo structure. It returns the index into
2188 * the ->drv[] array, or -1 if none are free.
2189 * is_controller_node indicates whether highest_lun should
2190 * count this disk, or if it's only being added to provide
2191 * a means to talk to the controller in case no logical
2192 * drives have yet been configured.
2194 static int cciss_add_gendisk(ctlr_info_t
*h
, unsigned char lunid
[],
2195 int controller_node
)
2199 drv_index
= cciss_alloc_drive_info(h
, controller_node
);
2200 if (drv_index
== -1)
2203 /*Check if the gendisk needs to be allocated */
2204 if (!h
->gendisk
[drv_index
]) {
2205 h
->gendisk
[drv_index
] =
2206 alloc_disk(1 << NWD_SHIFT
);
2207 if (!h
->gendisk
[drv_index
]) {
2208 dev_err(&h
->pdev
->dev
,
2209 "could not allocate a new disk %d\n",
2211 goto err_free_drive_info
;
2214 memcpy(h
->drv
[drv_index
]->LunID
, lunid
,
2215 sizeof(h
->drv
[drv_index
]->LunID
));
2216 if (cciss_create_ld_sysfs_entry(h
, drv_index
))
2218 /* Don't need to mark this busy because nobody */
2219 /* else knows about this disk yet to contend */
2220 /* for access to it. */
2221 h
->drv
[drv_index
]->busy_configuring
= 0;
2226 cciss_free_gendisk(h
, drv_index
);
2227 err_free_drive_info
:
2228 cciss_free_drive_info(h
, drv_index
);
2232 /* This is for the special case of a controller which
2233 * has no logical drives. In this case, we still need
2234 * to register a disk so the controller can be accessed
2235 * by the Array Config Utility.
2237 static void cciss_add_controller_node(ctlr_info_t
*h
)
2239 struct gendisk
*disk
;
2242 if (h
->gendisk
[0] != NULL
) /* already did this? Then bail. */
2245 drv_index
= cciss_add_gendisk(h
, CTLR_LUNID
, 1);
2246 if (drv_index
== -1)
2248 h
->drv
[drv_index
]->block_size
= 512;
2249 h
->drv
[drv_index
]->nr_blocks
= 0;
2250 h
->drv
[drv_index
]->heads
= 0;
2251 h
->drv
[drv_index
]->sectors
= 0;
2252 h
->drv
[drv_index
]->cylinders
= 0;
2253 h
->drv
[drv_index
]->raid_level
= -1;
2254 memset(h
->drv
[drv_index
]->serial_no
, 0, 16);
2255 disk
= h
->gendisk
[drv_index
];
2256 if (cciss_add_disk(h
, disk
, drv_index
) == 0)
2258 cciss_free_gendisk(h
, drv_index
);
2259 cciss_free_drive_info(h
, drv_index
);
2261 dev_warn(&h
->pdev
->dev
, "could not add disk 0.\n");
2265 /* This function will add and remove logical drives from the Logical
2266 * drive array of the controller and maintain persistency of ordering
2267 * so that mount points are preserved until the next reboot. This allows
2268 * for the removal of logical drives in the middle of the drive array
2269 * without a re-ordering of those drives.
2271 * h = The controller to perform the operations on
2273 static int rebuild_lun_table(ctlr_info_t
*h
, int first_time
,
2277 ReportLunData_struct
*ld_buff
= NULL
;
2283 unsigned char lunid
[8] = CTLR_LUNID
;
2284 unsigned long flags
;
2286 if (!capable(CAP_SYS_RAWIO
))
2289 /* Set busy_configuring flag for this operation */
2290 spin_lock_irqsave(&h
->lock
, flags
);
2291 if (h
->busy_configuring
) {
2292 spin_unlock_irqrestore(&h
->lock
, flags
);
2295 h
->busy_configuring
= 1;
2296 spin_unlock_irqrestore(&h
->lock
, flags
);
2298 ld_buff
= kzalloc(sizeof(ReportLunData_struct
), GFP_KERNEL
);
2299 if (ld_buff
== NULL
)
2302 return_code
= sendcmd_withirq(h
, CISS_REPORT_LOG
, ld_buff
,
2303 sizeof(ReportLunData_struct
),
2304 0, CTLR_LUNID
, TYPE_CMD
);
2306 if (return_code
== IO_OK
)
2307 listlength
= be32_to_cpu(*(__be32
*) ld_buff
->LUNListLength
);
2308 else { /* reading number of logical volumes failed */
2309 dev_warn(&h
->pdev
->dev
,
2310 "report logical volume command failed\n");
2315 num_luns
= listlength
/ 8; /* 8 bytes per entry */
2316 if (num_luns
> CISS_MAX_LUN
) {
2317 num_luns
= CISS_MAX_LUN
;
2318 dev_warn(&h
->pdev
->dev
, "more luns configured"
2319 " on controller than can be handled by"
2324 cciss_add_controller_node(h
);
2326 /* Compare controller drive array to driver's drive array
2327 * to see if any drives are missing on the controller due
2328 * to action of Array Config Utility (user deletes drive)
2329 * and deregister logical drives which have disappeared.
2331 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2335 /* skip holes in the array from already deleted drives */
2336 if (h
->drv
[i
] == NULL
)
2339 for (j
= 0; j
< num_luns
; j
++) {
2340 memcpy(lunid
, &ld_buff
->LUN
[j
][0], sizeof(lunid
));
2341 if (memcmp(h
->drv
[i
]->LunID
, lunid
,
2342 sizeof(lunid
)) == 0) {
2348 /* Deregister it from the OS, it's gone. */
2349 spin_lock_irqsave(&h
->lock
, flags
);
2350 h
->drv
[i
]->busy_configuring
= 1;
2351 spin_unlock_irqrestore(&h
->lock
, flags
);
2352 return_code
= deregister_disk(h
, i
, 1, via_ioctl
);
2353 if (h
->drv
[i
] != NULL
)
2354 h
->drv
[i
]->busy_configuring
= 0;
2358 /* Compare controller drive array to driver's drive array.
2359 * Check for updates in the drive information and any new drives
2360 * on the controller due to ACU adding logical drives, or changing
2361 * a logical drive's size, etc. Reregister any new/changed drives
2363 for (i
= 0; i
< num_luns
; i
++) {
2368 memcpy(lunid
, &ld_buff
->LUN
[i
][0], sizeof(lunid
));
2369 /* Find if the LUN is already in the drive array
2370 * of the driver. If so then update its info
2371 * if not in use. If it does not exist then find
2372 * the first free index and add it.
2374 for (j
= 0; j
<= h
->highest_lun
; j
++) {
2375 if (h
->drv
[j
] != NULL
&&
2376 memcmp(h
->drv
[j
]->LunID
, lunid
,
2377 sizeof(h
->drv
[j
]->LunID
)) == 0) {
2384 /* check if the drive was found already in the array */
2386 drv_index
= cciss_add_gendisk(h
, lunid
, 0);
2387 if (drv_index
== -1)
2390 cciss_update_drive_info(h
, drv_index
, first_time
, via_ioctl
);
2395 h
->busy_configuring
= 0;
2396 /* We return -1 here to tell the ACU that we have registered/updated
2397 * all of the drives that we can and to keep it from calling us
2402 dev_err(&h
->pdev
->dev
, "out of memory\n");
2403 h
->busy_configuring
= 0;
2407 static void cciss_clear_drive_info(drive_info_struct
*drive_info
)
2409 /* zero out the disk size info */
2410 drive_info
->nr_blocks
= 0;
2411 drive_info
->block_size
= 0;
2412 drive_info
->heads
= 0;
2413 drive_info
->sectors
= 0;
2414 drive_info
->cylinders
= 0;
2415 drive_info
->raid_level
= -1;
2416 memset(drive_info
->serial_no
, 0, sizeof(drive_info
->serial_no
));
2417 memset(drive_info
->model
, 0, sizeof(drive_info
->model
));
2418 memset(drive_info
->rev
, 0, sizeof(drive_info
->rev
));
2419 memset(drive_info
->vendor
, 0, sizeof(drive_info
->vendor
));
2421 * don't clear the LUNID though, we need to remember which
2426 /* This function will deregister the disk and it's queue from the
2427 * kernel. It must be called with the controller lock held and the
2428 * drv structures busy_configuring flag set. It's parameters are:
2430 * disk = This is the disk to be deregistered
2431 * drv = This is the drive_info_struct associated with the disk to be
2432 * deregistered. It contains information about the disk used
2434 * clear_all = This flag determines whether or not the disk information
2435 * is going to be completely cleared out and the highest_lun
2436 * reset. Sometimes we want to clear out information about
2437 * the disk in preparation for re-adding it. In this case
2438 * the highest_lun should be left unchanged and the LunID
2439 * should not be cleared.
2441 * This indicates whether we've reached this path via ioctl.
2442 * This affects the maximum usage count allowed for c0d0 to be messed with.
2443 * If this path is reached via ioctl(), then the max_usage_count will
2444 * be 1, as the process calling ioctl() has got to have the device open.
2445 * If we get here via sysfs, then the max usage count will be zero.
2447 static int deregister_disk(ctlr_info_t
*h
, int drv_index
,
2448 int clear_all
, int via_ioctl
)
2451 struct gendisk
*disk
;
2452 drive_info_struct
*drv
;
2453 int recalculate_highest_lun
;
2455 if (!capable(CAP_SYS_RAWIO
))
2458 drv
= h
->drv
[drv_index
];
2459 disk
= h
->gendisk
[drv_index
];
2461 /* make sure logical volume is NOT is use */
2462 if (clear_all
|| (h
->gendisk
[0] == disk
)) {
2463 if (drv
->usage_count
> via_ioctl
)
2465 } else if (drv
->usage_count
> 0)
2468 recalculate_highest_lun
= (drv
== h
->drv
[h
->highest_lun
]);
2470 /* invalidate the devices and deregister the disk. If it is disk
2471 * zero do not deregister it but just zero out it's values. This
2472 * allows us to delete disk zero but keep the controller registered.
2474 if (h
->gendisk
[0] != disk
) {
2475 struct request_queue
*q
= disk
->queue
;
2476 if (disk
->flags
& GENHD_FL_UP
) {
2477 cciss_destroy_ld_sysfs_entry(h
, drv_index
, 0);
2481 blk_cleanup_queue(q
);
2482 /* If clear_all is set then we are deleting the logical
2483 * drive, not just refreshing its info. For drives
2484 * other than disk 0 we will call put_disk. We do not
2485 * do this for disk 0 as we need it to be able to
2486 * configure the controller.
2489 /* This isn't pretty, but we need to find the
2490 * disk in our array and NULL our the pointer.
2491 * This is so that we will call alloc_disk if
2492 * this index is used again later.
2494 for (i
=0; i
< CISS_MAX_LUN
; i
++){
2495 if (h
->gendisk
[i
] == disk
) {
2496 h
->gendisk
[i
] = NULL
;
2503 set_capacity(disk
, 0);
2504 cciss_clear_drive_info(drv
);
2509 /* if it was the last disk, find the new hightest lun */
2510 if (clear_all
&& recalculate_highest_lun
) {
2511 int newhighest
= -1;
2512 for (i
= 0; i
<= h
->highest_lun
; i
++) {
2513 /* if the disk has size > 0, it is available */
2514 if (h
->drv
[i
] && h
->drv
[i
]->heads
)
2517 h
->highest_lun
= newhighest
;
2522 static int fill_cmd(ctlr_info_t
*h
, CommandList_struct
*c
, __u8 cmd
, void *buff
,
2523 size_t size
, __u8 page_code
, unsigned char *scsi3addr
,
2526 u64bit buff_dma_handle
;
2529 c
->cmd_type
= CMD_IOCTL_PEND
;
2530 c
->Header
.ReplyQueue
= 0;
2532 c
->Header
.SGList
= 1;
2533 c
->Header
.SGTotal
= 1;
2535 c
->Header
.SGList
= 0;
2536 c
->Header
.SGTotal
= 0;
2538 c
->Header
.Tag
.lower
= c
->busaddr
;
2539 memcpy(c
->Header
.LUN
.LunAddrBytes
, scsi3addr
, 8);
2541 c
->Request
.Type
.Type
= cmd_type
;
2542 if (cmd_type
== TYPE_CMD
) {
2545 /* are we trying to read a vital product page */
2546 if (page_code
!= 0) {
2547 c
->Request
.CDB
[1] = 0x01;
2548 c
->Request
.CDB
[2] = page_code
;
2550 c
->Request
.CDBLen
= 6;
2551 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2552 c
->Request
.Type
.Direction
= XFER_READ
;
2553 c
->Request
.Timeout
= 0;
2554 c
->Request
.CDB
[0] = CISS_INQUIRY
;
2555 c
->Request
.CDB
[4] = size
& 0xFF;
2557 case CISS_REPORT_LOG
:
2558 case CISS_REPORT_PHYS
:
2559 /* Talking to controller so It's a physical command
2560 mode = 00 target = 0. Nothing to write.
2562 c
->Request
.CDBLen
= 12;
2563 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2564 c
->Request
.Type
.Direction
= XFER_READ
;
2565 c
->Request
.Timeout
= 0;
2566 c
->Request
.CDB
[0] = cmd
;
2567 c
->Request
.CDB
[6] = (size
>> 24) & 0xFF; /* MSB */
2568 c
->Request
.CDB
[7] = (size
>> 16) & 0xFF;
2569 c
->Request
.CDB
[8] = (size
>> 8) & 0xFF;
2570 c
->Request
.CDB
[9] = size
& 0xFF;
2573 case CCISS_READ_CAPACITY
:
2574 c
->Request
.CDBLen
= 10;
2575 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2576 c
->Request
.Type
.Direction
= XFER_READ
;
2577 c
->Request
.Timeout
= 0;
2578 c
->Request
.CDB
[0] = cmd
;
2580 case CCISS_READ_CAPACITY_16
:
2581 c
->Request
.CDBLen
= 16;
2582 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2583 c
->Request
.Type
.Direction
= XFER_READ
;
2584 c
->Request
.Timeout
= 0;
2585 c
->Request
.CDB
[0] = cmd
;
2586 c
->Request
.CDB
[1] = 0x10;
2587 c
->Request
.CDB
[10] = (size
>> 24) & 0xFF;
2588 c
->Request
.CDB
[11] = (size
>> 16) & 0xFF;
2589 c
->Request
.CDB
[12] = (size
>> 8) & 0xFF;
2590 c
->Request
.CDB
[13] = size
& 0xFF;
2591 c
->Request
.Timeout
= 0;
2592 c
->Request
.CDB
[0] = cmd
;
2594 case CCISS_CACHE_FLUSH
:
2595 c
->Request
.CDBLen
= 12;
2596 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2597 c
->Request
.Type
.Direction
= XFER_WRITE
;
2598 c
->Request
.Timeout
= 0;
2599 c
->Request
.CDB
[0] = BMIC_WRITE
;
2600 c
->Request
.CDB
[6] = BMIC_CACHE_FLUSH
;
2601 c
->Request
.CDB
[7] = (size
>> 8) & 0xFF;
2602 c
->Request
.CDB
[8] = size
& 0xFF;
2604 case TEST_UNIT_READY
:
2605 c
->Request
.CDBLen
= 6;
2606 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2607 c
->Request
.Type
.Direction
= XFER_NONE
;
2608 c
->Request
.Timeout
= 0;
2611 dev_warn(&h
->pdev
->dev
, "Unknown Command 0x%c\n", cmd
);
2614 } else if (cmd_type
== TYPE_MSG
) {
2616 case CCISS_ABORT_MSG
:
2617 c
->Request
.CDBLen
= 12;
2618 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2619 c
->Request
.Type
.Direction
= XFER_WRITE
;
2620 c
->Request
.Timeout
= 0;
2621 c
->Request
.CDB
[0] = cmd
; /* abort */
2622 c
->Request
.CDB
[1] = 0; /* abort a command */
2623 /* buff contains the tag of the command to abort */
2624 memcpy(&c
->Request
.CDB
[4], buff
, 8);
2626 case CCISS_RESET_MSG
:
2627 c
->Request
.CDBLen
= 16;
2628 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2629 c
->Request
.Type
.Direction
= XFER_NONE
;
2630 c
->Request
.Timeout
= 0;
2631 memset(&c
->Request
.CDB
[0], 0, sizeof(c
->Request
.CDB
));
2632 c
->Request
.CDB
[0] = cmd
; /* reset */
2633 c
->Request
.CDB
[1] = CCISS_RESET_TYPE_TARGET
;
2635 case CCISS_NOOP_MSG
:
2636 c
->Request
.CDBLen
= 1;
2637 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
2638 c
->Request
.Type
.Direction
= XFER_WRITE
;
2639 c
->Request
.Timeout
= 0;
2640 c
->Request
.CDB
[0] = cmd
;
2643 dev_warn(&h
->pdev
->dev
,
2644 "unknown message type %d\n", cmd
);
2648 dev_warn(&h
->pdev
->dev
, "unknown command type %d\n", cmd_type
);
2651 /* Fill in the scatter gather information */
2653 buff_dma_handle
.val
= (__u64
) pci_map_single(h
->pdev
,
2655 PCI_DMA_BIDIRECTIONAL
);
2656 c
->SG
[0].Addr
.lower
= buff_dma_handle
.val32
.lower
;
2657 c
->SG
[0].Addr
.upper
= buff_dma_handle
.val32
.upper
;
2658 c
->SG
[0].Len
= size
;
2659 c
->SG
[0].Ext
= 0; /* we are not chaining */
2664 static int cciss_send_reset(ctlr_info_t
*h
, unsigned char *scsi3addr
,
2667 CommandList_struct
*c
;
2673 return_status
= fill_cmd(h
, c
, CCISS_RESET_MSG
, NULL
, 0, 0,
2674 CTLR_LUNID
, TYPE_MSG
);
2675 c
->Request
.CDB
[1] = reset_type
; /* fill_cmd defaults to target reset */
2676 if (return_status
!= IO_OK
) {
2677 cmd_special_free(h
, c
);
2678 return return_status
;
2681 enqueue_cmd_and_start_io(h
, c
);
2682 /* Don't wait for completion, the reset won't complete. Don't free
2683 * the command either. This is the last command we will send before
2684 * re-initializing everything, so it doesn't matter and won't leak.
2689 static int check_target_status(ctlr_info_t
*h
, CommandList_struct
*c
)
2691 switch (c
->err_info
->ScsiStatus
) {
2694 case SAM_STAT_CHECK_CONDITION
:
2695 switch (0xf & c
->err_info
->SenseInfo
[2]) {
2696 case 0: return IO_OK
; /* no sense */
2697 case 1: return IO_OK
; /* recovered error */
2699 if (check_for_unit_attention(h
, c
))
2700 return IO_NEEDS_RETRY
;
2701 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x "
2702 "check condition, sense key = 0x%02x\n",
2703 c
->Request
.CDB
[0], c
->err_info
->SenseInfo
[2]);
2707 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x"
2708 "scsi status = 0x%02x\n",
2709 c
->Request
.CDB
[0], c
->err_info
->ScsiStatus
);
2715 static int process_sendcmd_error(ctlr_info_t
*h
, CommandList_struct
*c
)
2717 int return_status
= IO_OK
;
2719 if (c
->err_info
->CommandStatus
== CMD_SUCCESS
)
2722 switch (c
->err_info
->CommandStatus
) {
2723 case CMD_TARGET_STATUS
:
2724 return_status
= check_target_status(h
, c
);
2726 case CMD_DATA_UNDERRUN
:
2727 case CMD_DATA_OVERRUN
:
2728 /* expected for inquiry and report lun commands */
2731 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x is "
2732 "reported invalid\n", c
->Request
.CDB
[0]);
2733 return_status
= IO_ERROR
;
2735 case CMD_PROTOCOL_ERR
:
2736 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x has "
2737 "protocol error\n", c
->Request
.CDB
[0]);
2738 return_status
= IO_ERROR
;
2740 case CMD_HARDWARE_ERR
:
2741 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2742 " hardware error\n", c
->Request
.CDB
[0]);
2743 return_status
= IO_ERROR
;
2745 case CMD_CONNECTION_LOST
:
2746 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x had "
2747 "connection lost\n", c
->Request
.CDB
[0]);
2748 return_status
= IO_ERROR
;
2751 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x was "
2752 "aborted\n", c
->Request
.CDB
[0]);
2753 return_status
= IO_ERROR
;
2755 case CMD_ABORT_FAILED
:
2756 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x reports "
2757 "abort failed\n", c
->Request
.CDB
[0]);
2758 return_status
= IO_ERROR
;
2760 case CMD_UNSOLICITED_ABORT
:
2761 dev_warn(&h
->pdev
->dev
, "unsolicited abort 0x%02x\n",
2763 return_status
= IO_NEEDS_RETRY
;
2765 case CMD_UNABORTABLE
:
2766 dev_warn(&h
->pdev
->dev
, "cmd unabortable\n");
2767 return_status
= IO_ERROR
;
2770 dev_warn(&h
->pdev
->dev
, "cmd 0x%02x returned "
2771 "unknown status %x\n", c
->Request
.CDB
[0],
2772 c
->err_info
->CommandStatus
);
2773 return_status
= IO_ERROR
;
2775 return return_status
;
2778 static int sendcmd_withirq_core(ctlr_info_t
*h
, CommandList_struct
*c
,
2781 DECLARE_COMPLETION_ONSTACK(wait
);
2782 u64bit buff_dma_handle
;
2783 int return_status
= IO_OK
;
2787 enqueue_cmd_and_start_io(h
, c
);
2789 wait_for_completion(&wait
);
2791 if (c
->err_info
->CommandStatus
== 0 || !attempt_retry
)
2794 return_status
= process_sendcmd_error(h
, c
);
2796 if (return_status
== IO_NEEDS_RETRY
&&
2797 c
->retry_count
< MAX_CMD_RETRIES
) {
2798 dev_warn(&h
->pdev
->dev
, "retrying 0x%02x\n",
2801 /* erase the old error information */
2802 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
2803 return_status
= IO_OK
;
2804 INIT_COMPLETION(wait
);
2809 /* unlock the buffers from DMA */
2810 buff_dma_handle
.val32
.lower
= c
->SG
[0].Addr
.lower
;
2811 buff_dma_handle
.val32
.upper
= c
->SG
[0].Addr
.upper
;
2812 pci_unmap_single(h
->pdev
, (dma_addr_t
) buff_dma_handle
.val
,
2813 c
->SG
[0].Len
, PCI_DMA_BIDIRECTIONAL
);
2814 return return_status
;
2817 static int sendcmd_withirq(ctlr_info_t
*h
, __u8 cmd
, void *buff
, size_t size
,
2818 __u8 page_code
, unsigned char scsi3addr
[],
2821 CommandList_struct
*c
;
2824 c
= cmd_special_alloc(h
);
2827 return_status
= fill_cmd(h
, c
, cmd
, buff
, size
, page_code
,
2828 scsi3addr
, cmd_type
);
2829 if (return_status
== IO_OK
)
2830 return_status
= sendcmd_withirq_core(h
, c
, 1);
2832 cmd_special_free(h
, c
);
2833 return return_status
;
2836 static void cciss_geometry_inquiry(ctlr_info_t
*h
, int logvol
,
2837 sector_t total_size
,
2838 unsigned int block_size
,
2839 InquiryData_struct
*inq_buff
,
2840 drive_info_struct
*drv
)
2844 unsigned char scsi3addr
[8];
2846 memset(inq_buff
, 0, sizeof(InquiryData_struct
));
2847 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2848 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
2849 sizeof(*inq_buff
), 0xC1, scsi3addr
, TYPE_CMD
);
2850 if (return_code
== IO_OK
) {
2851 if (inq_buff
->data_byte
[8] == 0xFF) {
2852 dev_warn(&h
->pdev
->dev
,
2853 "reading geometry failed, volume "
2854 "does not support reading geometry\n");
2856 drv
->sectors
= 32; /* Sectors per track */
2857 drv
->cylinders
= total_size
+ 1;
2858 drv
->raid_level
= RAID_UNKNOWN
;
2860 drv
->heads
= inq_buff
->data_byte
[6];
2861 drv
->sectors
= inq_buff
->data_byte
[7];
2862 drv
->cylinders
= (inq_buff
->data_byte
[4] & 0xff) << 8;
2863 drv
->cylinders
+= inq_buff
->data_byte
[5];
2864 drv
->raid_level
= inq_buff
->data_byte
[8];
2866 drv
->block_size
= block_size
;
2867 drv
->nr_blocks
= total_size
+ 1;
2868 t
= drv
->heads
* drv
->sectors
;
2870 sector_t real_size
= total_size
+ 1;
2871 unsigned long rem
= sector_div(real_size
, t
);
2874 drv
->cylinders
= real_size
;
2876 } else { /* Get geometry failed */
2877 dev_warn(&h
->pdev
->dev
, "reading geometry failed\n");
2882 cciss_read_capacity(ctlr_info_t
*h
, int logvol
, sector_t
*total_size
,
2883 unsigned int *block_size
)
2885 ReadCapdata_struct
*buf
;
2887 unsigned char scsi3addr
[8];
2889 buf
= kzalloc(sizeof(ReadCapdata_struct
), GFP_KERNEL
);
2891 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2895 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2896 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY
, buf
,
2897 sizeof(ReadCapdata_struct
), 0, scsi3addr
, TYPE_CMD
);
2898 if (return_code
== IO_OK
) {
2899 *total_size
= be32_to_cpu(*(__be32
*) buf
->total_size
);
2900 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2901 } else { /* read capacity command failed */
2902 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2904 *block_size
= BLOCK_SIZE
;
2909 static void cciss_read_capacity_16(ctlr_info_t
*h
, int logvol
,
2910 sector_t
*total_size
, unsigned int *block_size
)
2912 ReadCapdata_struct_16
*buf
;
2914 unsigned char scsi3addr
[8];
2916 buf
= kzalloc(sizeof(ReadCapdata_struct_16
), GFP_KERNEL
);
2918 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2922 log_unit_to_scsi3addr(h
, scsi3addr
, logvol
);
2923 return_code
= sendcmd_withirq(h
, CCISS_READ_CAPACITY_16
,
2924 buf
, sizeof(ReadCapdata_struct_16
),
2925 0, scsi3addr
, TYPE_CMD
);
2926 if (return_code
== IO_OK
) {
2927 *total_size
= be64_to_cpu(*(__be64
*) buf
->total_size
);
2928 *block_size
= be32_to_cpu(*(__be32
*) buf
->block_size
);
2929 } else { /* read capacity command failed */
2930 dev_warn(&h
->pdev
->dev
, "read capacity failed\n");
2932 *block_size
= BLOCK_SIZE
;
2934 dev_info(&h
->pdev
->dev
, " blocks= %llu block_size= %d\n",
2935 (unsigned long long)*total_size
+1, *block_size
);
2939 static int cciss_revalidate(struct gendisk
*disk
)
2941 ctlr_info_t
*h
= get_host(disk
);
2942 drive_info_struct
*drv
= get_drv(disk
);
2945 unsigned int block_size
;
2946 sector_t total_size
;
2947 InquiryData_struct
*inq_buff
= NULL
;
2949 for (logvol
= 0; logvol
<= h
->highest_lun
; logvol
++) {
2950 if (!h
->drv
[logvol
])
2952 if (memcmp(h
->drv
[logvol
]->LunID
, drv
->LunID
,
2953 sizeof(drv
->LunID
)) == 0) {
2962 inq_buff
= kmalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
2963 if (inq_buff
== NULL
) {
2964 dev_warn(&h
->pdev
->dev
, "out of memory\n");
2967 if (h
->cciss_read
== CCISS_READ_10
) {
2968 cciss_read_capacity(h
, logvol
,
2969 &total_size
, &block_size
);
2971 cciss_read_capacity_16(h
, logvol
,
2972 &total_size
, &block_size
);
2974 cciss_geometry_inquiry(h
, logvol
, total_size
, block_size
,
2977 blk_queue_logical_block_size(drv
->queue
, drv
->block_size
);
2978 set_capacity(disk
, drv
->nr_blocks
);
2985 * Map (physical) PCI mem into (virtual) kernel space
2987 static void __iomem
*remap_pci_mem(ulong base
, ulong size
)
2989 ulong page_base
= ((ulong
) base
) & PAGE_MASK
;
2990 ulong page_offs
= ((ulong
) base
) - page_base
;
2991 void __iomem
*page_remapped
= ioremap(page_base
, page_offs
+ size
);
2993 return page_remapped
? (page_remapped
+ page_offs
) : NULL
;
2997 * Takes jobs of the Q and sends them to the hardware, then puts it on
2998 * the Q to wait for completion.
3000 static void start_io(ctlr_info_t
*h
)
3002 CommandList_struct
*c
;
3004 while (!list_empty(&h
->reqQ
)) {
3005 c
= list_entry(h
->reqQ
.next
, CommandList_struct
, list
);
3006 /* can't do anything if fifo is full */
3007 if ((h
->access
.fifo_full(h
))) {
3008 dev_warn(&h
->pdev
->dev
, "fifo full\n");
3012 /* Get the first entry from the Request Q */
3016 /* Tell the controller execute command */
3017 h
->access
.submit_command(h
, c
);
3019 /* Put job onto the completed Q */
3024 /* Assumes that h->lock is held. */
3025 /* Zeros out the error record and then resends the command back */
3026 /* to the controller */
3027 static inline void resend_cciss_cmd(ctlr_info_t
*h
, CommandList_struct
*c
)
3029 /* erase the old error information */
3030 memset(c
->err_info
, 0, sizeof(ErrorInfo_struct
));
3032 /* add it to software queue and then send it to the controller */
3035 if (h
->Qdepth
> h
->maxQsinceinit
)
3036 h
->maxQsinceinit
= h
->Qdepth
;
3041 static inline unsigned int make_status_bytes(unsigned int scsi_status_byte
,
3042 unsigned int msg_byte
, unsigned int host_byte
,
3043 unsigned int driver_byte
)
3045 /* inverse of macros in scsi.h */
3046 return (scsi_status_byte
& 0xff) |
3047 ((msg_byte
& 0xff) << 8) |
3048 ((host_byte
& 0xff) << 16) |
3049 ((driver_byte
& 0xff) << 24);
3052 static inline int evaluate_target_status(ctlr_info_t
*h
,
3053 CommandList_struct
*cmd
, int *retry_cmd
)
3055 unsigned char sense_key
;
3056 unsigned char status_byte
, msg_byte
, host_byte
, driver_byte
;
3060 /* If we get in here, it means we got "target status", that is, scsi status */
3061 status_byte
= cmd
->err_info
->ScsiStatus
;
3062 driver_byte
= DRIVER_OK
;
3063 msg_byte
= cmd
->err_info
->CommandStatus
; /* correct? seems too device specific */
3065 if (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
)
3066 host_byte
= DID_PASSTHROUGH
;
3070 error_value
= make_status_bytes(status_byte
, msg_byte
,
3071 host_byte
, driver_byte
);
3073 if (cmd
->err_info
->ScsiStatus
!= SAM_STAT_CHECK_CONDITION
) {
3074 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
)
3075 dev_warn(&h
->pdev
->dev
, "cmd %p "
3076 "has SCSI Status 0x%x\n",
3077 cmd
, cmd
->err_info
->ScsiStatus
);
3081 /* check the sense key */
3082 sense_key
= 0xf & cmd
->err_info
->SenseInfo
[2];
3083 /* no status or recovered error */
3084 if (((sense_key
== 0x0) || (sense_key
== 0x1)) &&
3085 (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
))
3088 if (check_for_unit_attention(h
, cmd
)) {
3089 *retry_cmd
= !(cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
);
3093 /* Not SG_IO or similar? */
3094 if (cmd
->rq
->cmd_type
!= REQ_TYPE_BLOCK_PC
) {
3095 if (error_value
!= 0)
3096 dev_warn(&h
->pdev
->dev
, "cmd %p has CHECK CONDITION"
3097 " sense key = 0x%x\n", cmd
, sense_key
);
3101 /* SG_IO or similar, copy sense data back */
3102 if (cmd
->rq
->sense
) {
3103 if (cmd
->rq
->sense_len
> cmd
->err_info
->SenseLen
)
3104 cmd
->rq
->sense_len
= cmd
->err_info
->SenseLen
;
3105 memcpy(cmd
->rq
->sense
, cmd
->err_info
->SenseInfo
,
3106 cmd
->rq
->sense_len
);
3108 cmd
->rq
->sense_len
= 0;
3113 /* checks the status of the job and calls complete buffers to mark all
3114 * buffers for the completed job. Note that this function does not need
3115 * to hold the hba/queue lock.
3117 static inline void complete_command(ctlr_info_t
*h
, CommandList_struct
*cmd
,
3121 struct request
*rq
= cmd
->rq
;
3126 rq
->errors
= make_status_bytes(0, 0, 0, DRIVER_TIMEOUT
);
3128 if (cmd
->err_info
->CommandStatus
== 0) /* no error has occurred */
3129 goto after_error_processing
;
3131 switch (cmd
->err_info
->CommandStatus
) {
3132 case CMD_TARGET_STATUS
:
3133 rq
->errors
= evaluate_target_status(h
, cmd
, &retry_cmd
);
3135 case CMD_DATA_UNDERRUN
:
3136 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
) {
3137 dev_warn(&h
->pdev
->dev
, "cmd %p has"
3138 " completed with data underrun "
3140 cmd
->rq
->resid_len
= cmd
->err_info
->ResidualCnt
;
3143 case CMD_DATA_OVERRUN
:
3144 if (cmd
->rq
->cmd_type
== REQ_TYPE_FS
)
3145 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has"
3146 " completed with data overrun "
3150 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p is "
3151 "reported invalid\n", cmd
);
3152 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3153 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3154 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3155 DID_PASSTHROUGH
: DID_ERROR
);
3157 case CMD_PROTOCOL_ERR
:
3158 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p has "
3159 "protocol error\n", cmd
);
3160 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3161 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3162 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3163 DID_PASSTHROUGH
: DID_ERROR
);
3165 case CMD_HARDWARE_ERR
:
3166 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3167 " hardware error\n", cmd
);
3168 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3169 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3170 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3171 DID_PASSTHROUGH
: DID_ERROR
);
3173 case CMD_CONNECTION_LOST
:
3174 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p had "
3175 "connection lost\n", cmd
);
3176 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3177 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3178 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3179 DID_PASSTHROUGH
: DID_ERROR
);
3182 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p was "
3184 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3185 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3186 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3187 DID_PASSTHROUGH
: DID_ABORT
);
3189 case CMD_ABORT_FAILED
:
3190 dev_warn(&h
->pdev
->dev
, "cciss: cmd %p reports "
3191 "abort failed\n", cmd
);
3192 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3193 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3194 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3195 DID_PASSTHROUGH
: DID_ERROR
);
3197 case CMD_UNSOLICITED_ABORT
:
3198 dev_warn(&h
->pdev
->dev
, "cciss%d: unsolicited "
3199 "abort %p\n", h
->ctlr
, cmd
);
3200 if (cmd
->retry_count
< MAX_CMD_RETRIES
) {
3202 dev_warn(&h
->pdev
->dev
, "retrying %p\n", cmd
);
3205 dev_warn(&h
->pdev
->dev
,
3206 "%p retried too many times\n", cmd
);
3207 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3208 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3209 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3210 DID_PASSTHROUGH
: DID_ABORT
);
3213 dev_warn(&h
->pdev
->dev
, "cmd %p timedout\n", cmd
);
3214 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3215 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3216 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3217 DID_PASSTHROUGH
: DID_ERROR
);
3219 case CMD_UNABORTABLE
:
3220 dev_warn(&h
->pdev
->dev
, "cmd %p unabortable\n", cmd
);
3221 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3222 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3223 cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
?
3224 DID_PASSTHROUGH
: DID_ERROR
);
3227 dev_warn(&h
->pdev
->dev
, "cmd %p returned "
3228 "unknown status %x\n", cmd
,
3229 cmd
->err_info
->CommandStatus
);
3230 rq
->errors
= make_status_bytes(SAM_STAT_GOOD
,
3231 cmd
->err_info
->CommandStatus
, DRIVER_OK
,
3232 (cmd
->rq
->cmd_type
== REQ_TYPE_BLOCK_PC
) ?
3233 DID_PASSTHROUGH
: DID_ERROR
);
3236 after_error_processing
:
3238 /* We need to return this command */
3240 resend_cciss_cmd(h
, cmd
);
3243 cmd
->rq
->completion_data
= cmd
;
3244 blk_complete_request(cmd
->rq
);
3247 static inline u32
cciss_tag_contains_index(u32 tag
)
3249 #define DIRECT_LOOKUP_BIT 0x10
3250 return tag
& DIRECT_LOOKUP_BIT
;
3253 static inline u32
cciss_tag_to_index(u32 tag
)
3255 #define DIRECT_LOOKUP_SHIFT 5
3256 return tag
>> DIRECT_LOOKUP_SHIFT
;
3259 static inline u32
cciss_tag_discard_error_bits(ctlr_info_t
*h
, u32 tag
)
3261 #define CCISS_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
3262 #define CCISS_SIMPLE_ERROR_BITS 0x03
3263 if (likely(h
->transMethod
& CFGTBL_Trans_Performant
))
3264 return tag
& ~CCISS_PERF_ERROR_BITS
;
3265 return tag
& ~CCISS_SIMPLE_ERROR_BITS
;
3268 static inline void cciss_mark_tag_indexed(u32
*tag
)
3270 *tag
|= DIRECT_LOOKUP_BIT
;
3273 static inline void cciss_set_tag_index(u32
*tag
, u32 index
)
3275 *tag
|= (index
<< DIRECT_LOOKUP_SHIFT
);
3279 * Get a request and submit it to the controller.
3281 static void do_cciss_request(struct request_queue
*q
)
3283 ctlr_info_t
*h
= q
->queuedata
;
3284 CommandList_struct
*c
;
3287 struct request
*creq
;
3289 struct scatterlist
*tmp_sg
;
3290 SGDescriptor_struct
*curr_sg
;
3291 drive_info_struct
*drv
;
3297 creq
= blk_peek_request(q
);
3301 BUG_ON(creq
->nr_phys_segments
> h
->maxsgentries
);
3307 blk_start_request(creq
);
3309 tmp_sg
= h
->scatter_list
[c
->cmdindex
];
3310 spin_unlock_irq(q
->queue_lock
);
3312 c
->cmd_type
= CMD_RWREQ
;
3315 /* fill in the request */
3316 drv
= creq
->rq_disk
->private_data
;
3317 c
->Header
.ReplyQueue
= 0; /* unused in simple mode */
3318 /* got command from pool, so use the command block index instead */
3319 /* for direct lookups. */
3320 /* The first 2 bits are reserved for controller error reporting. */
3321 cciss_set_tag_index(&c
->Header
.Tag
.lower
, c
->cmdindex
);
3322 cciss_mark_tag_indexed(&c
->Header
.Tag
.lower
);
3323 memcpy(&c
->Header
.LUN
, drv
->LunID
, sizeof(drv
->LunID
));
3324 c
->Request
.CDBLen
= 10; /* 12 byte commands not in FW yet; */
3325 c
->Request
.Type
.Type
= TYPE_CMD
; /* It is a command. */
3326 c
->Request
.Type
.Attribute
= ATTR_SIMPLE
;
3327 c
->Request
.Type
.Direction
=
3328 (rq_data_dir(creq
) == READ
) ? XFER_READ
: XFER_WRITE
;
3329 c
->Request
.Timeout
= 0; /* Don't time out */
3331 (rq_data_dir(creq
) == READ
) ? h
->cciss_read
: h
->cciss_write
;
3332 start_blk
= blk_rq_pos(creq
);
3333 dev_dbg(&h
->pdev
->dev
, "sector =%d nr_sectors=%d\n",
3334 (int)blk_rq_pos(creq
), (int)blk_rq_sectors(creq
));
3335 sg_init_table(tmp_sg
, h
->maxsgentries
);
3336 seg
= blk_rq_map_sg(q
, creq
, tmp_sg
);
3338 /* get the DMA records for the setup */
3339 if (c
->Request
.Type
.Direction
== XFER_READ
)
3340 dir
= PCI_DMA_FROMDEVICE
;
3342 dir
= PCI_DMA_TODEVICE
;
3348 for (i
= 0; i
< seg
; i
++) {
3349 if (((sg_index
+1) == (h
->max_cmd_sgentries
)) &&
3350 !chained
&& ((seg
- i
) > 1)) {
3351 /* Point to next chain block. */
3352 curr_sg
= h
->cmd_sg_list
[c
->cmdindex
];
3356 curr_sg
[sg_index
].Len
= tmp_sg
[i
].length
;
3357 temp64
.val
= (__u64
) pci_map_page(h
->pdev
, sg_page(&tmp_sg
[i
]),
3359 tmp_sg
[i
].length
, dir
);
3360 curr_sg
[sg_index
].Addr
.lower
= temp64
.val32
.lower
;
3361 curr_sg
[sg_index
].Addr
.upper
= temp64
.val32
.upper
;
3362 curr_sg
[sg_index
].Ext
= 0; /* we are not chaining */
3366 cciss_map_sg_chain_block(h
, c
, h
->cmd_sg_list
[c
->cmdindex
],
3367 (seg
- (h
->max_cmd_sgentries
- 1)) *
3368 sizeof(SGDescriptor_struct
));
3370 /* track how many SG entries we are using */
3374 dev_dbg(&h
->pdev
->dev
, "Submitting %u sectors in %d segments "
3376 blk_rq_sectors(creq
), seg
, chained
);
3378 c
->Header
.SGTotal
= seg
+ chained
;
3379 if (seg
<= h
->max_cmd_sgentries
)
3380 c
->Header
.SGList
= c
->Header
.SGTotal
;
3382 c
->Header
.SGList
= h
->max_cmd_sgentries
;
3383 set_performant_mode(h
, c
);
3385 if (likely(creq
->cmd_type
== REQ_TYPE_FS
)) {
3386 if(h
->cciss_read
== CCISS_READ_10
) {
3387 c
->Request
.CDB
[1] = 0;
3388 c
->Request
.CDB
[2] = (start_blk
>> 24) & 0xff; /* MSB */
3389 c
->Request
.CDB
[3] = (start_blk
>> 16) & 0xff;
3390 c
->Request
.CDB
[4] = (start_blk
>> 8) & 0xff;
3391 c
->Request
.CDB
[5] = start_blk
& 0xff;
3392 c
->Request
.CDB
[6] = 0; /* (sect >> 24) & 0xff; MSB */
3393 c
->Request
.CDB
[7] = (blk_rq_sectors(creq
) >> 8) & 0xff;
3394 c
->Request
.CDB
[8] = blk_rq_sectors(creq
) & 0xff;
3395 c
->Request
.CDB
[9] = c
->Request
.CDB
[11] = c
->Request
.CDB
[12] = 0;
3397 u32 upper32
= upper_32_bits(start_blk
);
3399 c
->Request
.CDBLen
= 16;
3400 c
->Request
.CDB
[1]= 0;
3401 c
->Request
.CDB
[2]= (upper32
>> 24) & 0xff; /* MSB */
3402 c
->Request
.CDB
[3]= (upper32
>> 16) & 0xff;
3403 c
->Request
.CDB
[4]= (upper32
>> 8) & 0xff;
3404 c
->Request
.CDB
[5]= upper32
& 0xff;
3405 c
->Request
.CDB
[6]= (start_blk
>> 24) & 0xff;
3406 c
->Request
.CDB
[7]= (start_blk
>> 16) & 0xff;
3407 c
->Request
.CDB
[8]= (start_blk
>> 8) & 0xff;
3408 c
->Request
.CDB
[9]= start_blk
& 0xff;
3409 c
->Request
.CDB
[10]= (blk_rq_sectors(creq
) >> 24) & 0xff;
3410 c
->Request
.CDB
[11]= (blk_rq_sectors(creq
) >> 16) & 0xff;
3411 c
->Request
.CDB
[12]= (blk_rq_sectors(creq
) >> 8) & 0xff;
3412 c
->Request
.CDB
[13]= blk_rq_sectors(creq
) & 0xff;
3413 c
->Request
.CDB
[14] = c
->Request
.CDB
[15] = 0;
3415 } else if (creq
->cmd_type
== REQ_TYPE_BLOCK_PC
) {
3416 c
->Request
.CDBLen
= creq
->cmd_len
;
3417 memcpy(c
->Request
.CDB
, creq
->cmd
, BLK_MAX_CDB
);
3419 dev_warn(&h
->pdev
->dev
, "bad request type %d\n",
3424 spin_lock_irq(q
->queue_lock
);
3428 if (h
->Qdepth
> h
->maxQsinceinit
)
3429 h
->maxQsinceinit
= h
->Qdepth
;
3435 /* We will already have the driver lock here so not need
3441 static inline unsigned long get_next_completion(ctlr_info_t
*h
)
3443 return h
->access
.command_completed(h
);
3446 static inline int interrupt_pending(ctlr_info_t
*h
)
3448 return h
->access
.intr_pending(h
);
3451 static inline long interrupt_not_for_us(ctlr_info_t
*h
)
3453 return ((h
->access
.intr_pending(h
) == 0) ||
3454 (h
->interrupts_enabled
== 0));
3457 static inline int bad_tag(ctlr_info_t
*h
, u32 tag_index
,
3460 if (unlikely(tag_index
>= h
->nr_cmds
)) {
3461 dev_warn(&h
->pdev
->dev
, "bad tag 0x%08x ignored.\n", raw_tag
);
3467 static inline void finish_cmd(ctlr_info_t
*h
, CommandList_struct
*c
,
3471 if (likely(c
->cmd_type
== CMD_RWREQ
))
3472 complete_command(h
, c
, 0);
3473 else if (c
->cmd_type
== CMD_IOCTL_PEND
)
3474 complete(c
->waiting
);
3475 #ifdef CONFIG_CISS_SCSI_TAPE
3476 else if (c
->cmd_type
== CMD_SCSI
)
3477 complete_scsi_command(c
, 0, raw_tag
);
3481 static inline u32
next_command(ctlr_info_t
*h
)
3485 if (unlikely(!(h
->transMethod
& CFGTBL_Trans_Performant
)))
3486 return h
->access
.command_completed(h
);
3488 if ((*(h
->reply_pool_head
) & 1) == (h
->reply_pool_wraparound
)) {
3489 a
= *(h
->reply_pool_head
); /* Next cmd in ring buffer */
3490 (h
->reply_pool_head
)++;
3491 h
->commands_outstanding
--;
3495 /* Check for wraparound */
3496 if (h
->reply_pool_head
== (h
->reply_pool
+ h
->max_commands
)) {
3497 h
->reply_pool_head
= h
->reply_pool
;
3498 h
->reply_pool_wraparound
^= 1;
3503 /* process completion of an indexed ("direct lookup") command */
3504 static inline u32
process_indexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3507 CommandList_struct
*c
;
3509 tag_index
= cciss_tag_to_index(raw_tag
);
3510 if (bad_tag(h
, tag_index
, raw_tag
))
3511 return next_command(h
);
3512 c
= h
->cmd_pool
+ tag_index
;
3513 finish_cmd(h
, c
, raw_tag
);
3514 return next_command(h
);
3517 /* process completion of a non-indexed command */
3518 static inline u32
process_nonindexed_cmd(ctlr_info_t
*h
, u32 raw_tag
)
3520 CommandList_struct
*c
= NULL
;
3521 __u32 busaddr_masked
, tag_masked
;
3523 tag_masked
= cciss_tag_discard_error_bits(h
, raw_tag
);
3524 list_for_each_entry(c
, &h
->cmpQ
, list
) {
3525 busaddr_masked
= cciss_tag_discard_error_bits(h
, c
->busaddr
);
3526 if (busaddr_masked
== tag_masked
) {
3527 finish_cmd(h
, c
, raw_tag
);
3528 return next_command(h
);
3531 bad_tag(h
, h
->nr_cmds
+ 1, raw_tag
);
3532 return next_command(h
);
3535 /* Some controllers, like p400, will give us one interrupt
3536 * after a soft reset, even if we turned interrupts off.
3537 * Only need to check for this in the cciss_xxx_discard_completions
3540 static int ignore_bogus_interrupt(ctlr_info_t
*h
)
3542 if (likely(!reset_devices
))
3545 if (likely(h
->interrupts_enabled
))
3548 dev_info(&h
->pdev
->dev
, "Received interrupt while interrupts disabled "
3549 "(known firmware bug.) Ignoring.\n");
3554 static irqreturn_t
cciss_intx_discard_completions(int irq
, void *dev_id
)
3556 ctlr_info_t
*h
= dev_id
;
3557 unsigned long flags
;
3560 if (ignore_bogus_interrupt(h
))
3563 if (interrupt_not_for_us(h
))
3565 spin_lock_irqsave(&h
->lock
, flags
);
3566 while (interrupt_pending(h
)) {
3567 raw_tag
= get_next_completion(h
);
3568 while (raw_tag
!= FIFO_EMPTY
)
3569 raw_tag
= next_command(h
);
3571 spin_unlock_irqrestore(&h
->lock
, flags
);
3575 static irqreturn_t
cciss_msix_discard_completions(int irq
, void *dev_id
)
3577 ctlr_info_t
*h
= dev_id
;
3578 unsigned long flags
;
3581 if (ignore_bogus_interrupt(h
))
3584 spin_lock_irqsave(&h
->lock
, flags
);
3585 raw_tag
= get_next_completion(h
);
3586 while (raw_tag
!= FIFO_EMPTY
)
3587 raw_tag
= next_command(h
);
3588 spin_unlock_irqrestore(&h
->lock
, flags
);
3592 static irqreturn_t
do_cciss_intx(int irq
, void *dev_id
)
3594 ctlr_info_t
*h
= dev_id
;
3595 unsigned long flags
;
3598 if (interrupt_not_for_us(h
))
3600 spin_lock_irqsave(&h
->lock
, flags
);
3601 while (interrupt_pending(h
)) {
3602 raw_tag
= get_next_completion(h
);
3603 while (raw_tag
!= FIFO_EMPTY
) {
3604 if (cciss_tag_contains_index(raw_tag
))
3605 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3607 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3610 spin_unlock_irqrestore(&h
->lock
, flags
);
3614 /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never
3615 * check the interrupt pending register because it is not set.
3617 static irqreturn_t
do_cciss_msix_intr(int irq
, void *dev_id
)
3619 ctlr_info_t
*h
= dev_id
;
3620 unsigned long flags
;
3623 spin_lock_irqsave(&h
->lock
, flags
);
3624 raw_tag
= get_next_completion(h
);
3625 while (raw_tag
!= FIFO_EMPTY
) {
3626 if (cciss_tag_contains_index(raw_tag
))
3627 raw_tag
= process_indexed_cmd(h
, raw_tag
);
3629 raw_tag
= process_nonindexed_cmd(h
, raw_tag
);
3631 spin_unlock_irqrestore(&h
->lock
, flags
);
3636 * add_to_scan_list() - add controller to rescan queue
3637 * @h: Pointer to the controller.
3639 * Adds the controller to the rescan queue if not already on the queue.
3641 * returns 1 if added to the queue, 0 if skipped (could be on the
3642 * queue already, or the controller could be initializing or shutting
3645 static int add_to_scan_list(struct ctlr_info
*h
)
3647 struct ctlr_info
*test_h
;
3651 if (h
->busy_initializing
)
3654 if (!mutex_trylock(&h
->busy_shutting_down
))
3657 mutex_lock(&scan_mutex
);
3658 list_for_each_entry(test_h
, &scan_q
, scan_list
) {
3664 if (!found
&& !h
->busy_scanning
) {
3665 INIT_COMPLETION(h
->scan_wait
);
3666 list_add_tail(&h
->scan_list
, &scan_q
);
3669 mutex_unlock(&scan_mutex
);
3670 mutex_unlock(&h
->busy_shutting_down
);
3676 * remove_from_scan_list() - remove controller from rescan queue
3677 * @h: Pointer to the controller.
3679 * Removes the controller from the rescan queue if present. Blocks if
3680 * the controller is currently conducting a rescan. The controller
3681 * can be in one of three states:
3682 * 1. Doesn't need a scan
3683 * 2. On the scan list, but not scanning yet (we remove it)
3684 * 3. Busy scanning (and not on the list). In this case we want to wait for
3685 * the scan to complete to make sure the scanning thread for this
3686 * controller is completely idle.
3688 static void remove_from_scan_list(struct ctlr_info
*h
)
3690 struct ctlr_info
*test_h
, *tmp_h
;
3692 mutex_lock(&scan_mutex
);
3693 list_for_each_entry_safe(test_h
, tmp_h
, &scan_q
, scan_list
) {
3694 if (test_h
== h
) { /* state 2. */
3695 list_del(&h
->scan_list
);
3696 complete_all(&h
->scan_wait
);
3697 mutex_unlock(&scan_mutex
);
3701 if (h
->busy_scanning
) { /* state 3. */
3702 mutex_unlock(&scan_mutex
);
3703 wait_for_completion(&h
->scan_wait
);
3704 } else { /* state 1, nothing to do. */
3705 mutex_unlock(&scan_mutex
);
3710 * scan_thread() - kernel thread used to rescan controllers
3713 * A kernel thread used scan for drive topology changes on
3714 * controllers. The thread processes only one controller at a time
3715 * using a queue. Controllers are added to the queue using
3716 * add_to_scan_list() and removed from the queue either after done
3717 * processing or using remove_from_scan_list().
3721 static int scan_thread(void *data
)
3723 struct ctlr_info
*h
;
3726 set_current_state(TASK_INTERRUPTIBLE
);
3728 if (kthread_should_stop())
3732 mutex_lock(&scan_mutex
);
3733 if (list_empty(&scan_q
)) {
3734 mutex_unlock(&scan_mutex
);
3738 h
= list_entry(scan_q
.next
,
3741 list_del(&h
->scan_list
);
3742 h
->busy_scanning
= 1;
3743 mutex_unlock(&scan_mutex
);
3745 rebuild_lun_table(h
, 0, 0);
3746 complete_all(&h
->scan_wait
);
3747 mutex_lock(&scan_mutex
);
3748 h
->busy_scanning
= 0;
3749 mutex_unlock(&scan_mutex
);
3756 static int check_for_unit_attention(ctlr_info_t
*h
, CommandList_struct
*c
)
3758 if (c
->err_info
->SenseInfo
[2] != UNIT_ATTENTION
)
3761 switch (c
->err_info
->SenseInfo
[12]) {
3763 dev_warn(&h
->pdev
->dev
, "a state change "
3764 "detected, command retried\n");
3768 dev_warn(&h
->pdev
->dev
, "LUN failure "
3769 "detected, action required\n");
3772 case REPORT_LUNS_CHANGED
:
3773 dev_warn(&h
->pdev
->dev
, "report LUN data changed\n");
3775 * Here, we could call add_to_scan_list and wake up the scan thread,
3776 * except that it's quite likely that we will get more than one
3777 * REPORT_LUNS_CHANGED condition in quick succession, which means
3778 * that those which occur after the first one will likely happen
3779 * *during* the scan_thread's rescan. And the rescan code is not
3780 * robust enough to restart in the middle, undoing what it has already
3781 * done, and it's not clear that it's even possible to do this, since
3782 * part of what it does is notify the block layer, which starts
3783 * doing it's own i/o to read partition tables and so on, and the
3784 * driver doesn't have visibility to know what might need undoing.
3785 * In any event, if possible, it is horribly complicated to get right
3786 * so we just don't do it for now.
3788 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
3792 case POWER_OR_RESET
:
3793 dev_warn(&h
->pdev
->dev
,
3794 "a power on or device reset detected\n");
3797 case UNIT_ATTENTION_CLEARED
:
3798 dev_warn(&h
->pdev
->dev
,
3799 "unit attention cleared by another initiator\n");
3803 dev_warn(&h
->pdev
->dev
, "unknown unit attention detected\n");
3809 * We cannot read the structure directly, for portability we must use
3811 * This is for debug only.
3813 static void print_cfg_table(ctlr_info_t
*h
)
3817 CfgTable_struct
*tb
= h
->cfgtable
;
3819 dev_dbg(&h
->pdev
->dev
, "Controller Configuration information\n");
3820 dev_dbg(&h
->pdev
->dev
, "------------------------------------\n");
3821 for (i
= 0; i
< 4; i
++)
3822 temp_name
[i
] = readb(&(tb
->Signature
[i
]));
3823 temp_name
[4] = '\0';
3824 dev_dbg(&h
->pdev
->dev
, " Signature = %s\n", temp_name
);
3825 dev_dbg(&h
->pdev
->dev
, " Spec Number = %d\n",
3826 readl(&(tb
->SpecValence
)));
3827 dev_dbg(&h
->pdev
->dev
, " Transport methods supported = 0x%x\n",
3828 readl(&(tb
->TransportSupport
)));
3829 dev_dbg(&h
->pdev
->dev
, " Transport methods active = 0x%x\n",
3830 readl(&(tb
->TransportActive
)));
3831 dev_dbg(&h
->pdev
->dev
, " Requested transport Method = 0x%x\n",
3832 readl(&(tb
->HostWrite
.TransportRequest
)));
3833 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Delay = 0x%x\n",
3834 readl(&(tb
->HostWrite
.CoalIntDelay
)));
3835 dev_dbg(&h
->pdev
->dev
, " Coalesce Interrupt Count = 0x%x\n",
3836 readl(&(tb
->HostWrite
.CoalIntCount
)));
3837 dev_dbg(&h
->pdev
->dev
, " Max outstanding commands = 0x%d\n",
3838 readl(&(tb
->CmdsOutMax
)));
3839 dev_dbg(&h
->pdev
->dev
, " Bus Types = 0x%x\n",
3840 readl(&(tb
->BusTypes
)));
3841 for (i
= 0; i
< 16; i
++)
3842 temp_name
[i
] = readb(&(tb
->ServerName
[i
]));
3843 temp_name
[16] = '\0';
3844 dev_dbg(&h
->pdev
->dev
, " Server Name = %s\n", temp_name
);
3845 dev_dbg(&h
->pdev
->dev
, " Heartbeat Counter = 0x%x\n\n\n",
3846 readl(&(tb
->HeartBeat
)));
3849 static int find_PCI_BAR_index(struct pci_dev
*pdev
, unsigned long pci_bar_addr
)
3851 int i
, offset
, mem_type
, bar_type
;
3852 if (pci_bar_addr
== PCI_BASE_ADDRESS_0
) /* looking for BAR zero? */
3855 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++) {
3856 bar_type
= pci_resource_flags(pdev
, i
) & PCI_BASE_ADDRESS_SPACE
;
3857 if (bar_type
== PCI_BASE_ADDRESS_SPACE_IO
)
3860 mem_type
= pci_resource_flags(pdev
, i
) &
3861 PCI_BASE_ADDRESS_MEM_TYPE_MASK
;
3863 case PCI_BASE_ADDRESS_MEM_TYPE_32
:
3864 case PCI_BASE_ADDRESS_MEM_TYPE_1M
:
3865 offset
+= 4; /* 32 bit */
3867 case PCI_BASE_ADDRESS_MEM_TYPE_64
:
3870 default: /* reserved in PCI 2.2 */
3871 dev_warn(&pdev
->dev
,
3872 "Base address is invalid\n");
3877 if (offset
== pci_bar_addr
- PCI_BASE_ADDRESS_0
)
3883 /* Fill in bucket_map[], given nsgs (the max number of
3884 * scatter gather elements supported) and bucket[],
3885 * which is an array of 8 integers. The bucket[] array
3886 * contains 8 different DMA transfer sizes (in 16
3887 * byte increments) which the controller uses to fetch
3888 * commands. This function fills in bucket_map[], which
3889 * maps a given number of scatter gather elements to one of
3890 * the 8 DMA transfer sizes. The point of it is to allow the
3891 * controller to only do as much DMA as needed to fetch the
3892 * command, with the DMA transfer size encoded in the lower
3893 * bits of the command address.
3895 static void calc_bucket_map(int bucket
[], int num_buckets
,
3896 int nsgs
, int *bucket_map
)
3900 /* even a command with 0 SGs requires 4 blocks */
3901 #define MINIMUM_TRANSFER_BLOCKS 4
3902 #define NUM_BUCKETS 8
3903 /* Note, bucket_map must have nsgs+1 entries. */
3904 for (i
= 0; i
<= nsgs
; i
++) {
3905 /* Compute size of a command with i SG entries */
3906 size
= i
+ MINIMUM_TRANSFER_BLOCKS
;
3907 b
= num_buckets
; /* Assume the biggest bucket */
3908 /* Find the bucket that is just big enough */
3909 for (j
= 0; j
< 8; j
++) {
3910 if (bucket
[j
] >= size
) {
3915 /* for a command with i SG entries, use bucket b. */
3920 static void cciss_wait_for_mode_change_ack(ctlr_info_t
*h
)
3924 /* under certain very rare conditions, this can take awhile.
3925 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3926 * as we enter this code.) */
3927 for (i
= 0; i
< MAX_CONFIG_WAIT
; i
++) {
3928 if (!(readl(h
->vaddr
+ SA5_DOORBELL
) & CFGTBL_ChangeReq
))
3930 usleep_range(10000, 20000);
3934 static void cciss_enter_performant_mode(ctlr_info_t
*h
, u32 use_short_tags
)
3936 /* This is a bit complicated. There are 8 registers on
3937 * the controller which we write to to tell it 8 different
3938 * sizes of commands which there may be. It's a way of
3939 * reducing the DMA done to fetch each command. Encoded into
3940 * each command's tag are 3 bits which communicate to the controller
3941 * which of the eight sizes that command fits within. The size of
3942 * each command depends on how many scatter gather entries there are.
3943 * Each SG entry requires 16 bytes. The eight registers are programmed
3944 * with the number of 16-byte blocks a command of that size requires.
3945 * The smallest command possible requires 5 such 16 byte blocks.
3946 * the largest command possible requires MAXSGENTRIES + 4 16-byte
3947 * blocks. Note, this only extends to the SG entries contained
3948 * within the command block, and does not extend to chained blocks
3949 * of SG elements. bft[] contains the eight values we write to
3950 * the registers. They are not evenly distributed, but have more
3951 * sizes for small commands, and fewer sizes for larger commands.
3954 int bft
[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES
+ 4};
3956 * 5 = 1 s/g entry or 4k
3957 * 6 = 2 s/g entry or 8k
3958 * 8 = 4 s/g entry or 16k
3959 * 10 = 6 s/g entry or 24k
3961 unsigned long register_value
;
3962 BUILD_BUG_ON(28 > MAXSGENTRIES
+ 4);
3964 h
->reply_pool_wraparound
= 1; /* spec: init to 1 */
3966 /* Controller spec: zero out this buffer. */
3967 memset(h
->reply_pool
, 0, h
->max_commands
* sizeof(__u64
));
3968 h
->reply_pool_head
= h
->reply_pool
;
3970 trans_offset
= readl(&(h
->cfgtable
->TransMethodOffset
));
3971 calc_bucket_map(bft
, ARRAY_SIZE(bft
), h
->maxsgentries
,
3972 h
->blockFetchTable
);
3973 writel(bft
[0], &h
->transtable
->BlockFetch0
);
3974 writel(bft
[1], &h
->transtable
->BlockFetch1
);
3975 writel(bft
[2], &h
->transtable
->BlockFetch2
);
3976 writel(bft
[3], &h
->transtable
->BlockFetch3
);
3977 writel(bft
[4], &h
->transtable
->BlockFetch4
);
3978 writel(bft
[5], &h
->transtable
->BlockFetch5
);
3979 writel(bft
[6], &h
->transtable
->BlockFetch6
);
3980 writel(bft
[7], &h
->transtable
->BlockFetch7
);
3982 /* size of controller ring buffer */
3983 writel(h
->max_commands
, &h
->transtable
->RepQSize
);
3984 writel(1, &h
->transtable
->RepQCount
);
3985 writel(0, &h
->transtable
->RepQCtrAddrLow32
);
3986 writel(0, &h
->transtable
->RepQCtrAddrHigh32
);
3987 writel(h
->reply_pool_dhandle
, &h
->transtable
->RepQAddr0Low32
);
3988 writel(0, &h
->transtable
->RepQAddr0High32
);
3989 writel(CFGTBL_Trans_Performant
| use_short_tags
,
3990 &(h
->cfgtable
->HostWrite
.TransportRequest
));
3992 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
3993 cciss_wait_for_mode_change_ack(h
);
3994 register_value
= readl(&(h
->cfgtable
->TransportActive
));
3995 if (!(register_value
& CFGTBL_Trans_Performant
))
3996 dev_warn(&h
->pdev
->dev
, "cciss: unable to get board into"
3997 " performant mode\n");
4000 static void cciss_put_controller_into_performant_mode(ctlr_info_t
*h
)
4002 __u32 trans_support
;
4004 if (cciss_simple_mode
)
4007 dev_dbg(&h
->pdev
->dev
, "Trying to put board into Performant mode\n");
4008 /* Attempt to put controller into performant mode if supported */
4009 /* Does board support performant mode? */
4010 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
4011 if (!(trans_support
& PERFORMANT_MODE
))
4014 dev_dbg(&h
->pdev
->dev
, "Placing controller into performant mode\n");
4015 /* Performant mode demands commands on a 32 byte boundary
4016 * pci_alloc_consistent aligns on page boundarys already.
4017 * Just need to check if divisible by 32
4019 if ((sizeof(CommandList_struct
) % 32) != 0) {
4020 dev_warn(&h
->pdev
->dev
, "%s %d %s\n",
4021 "cciss info: command size[",
4022 (int)sizeof(CommandList_struct
),
4023 "] not divisible by 32, no performant mode..\n");
4027 /* Performant mode ring buffer and supporting data structures */
4028 h
->reply_pool
= (__u64
*)pci_alloc_consistent(
4029 h
->pdev
, h
->max_commands
* sizeof(__u64
),
4030 &(h
->reply_pool_dhandle
));
4032 /* Need a block fetch table for performant mode */
4033 h
->blockFetchTable
= kmalloc(((h
->maxsgentries
+1) *
4034 sizeof(__u32
)), GFP_KERNEL
);
4036 if ((h
->reply_pool
== NULL
) || (h
->blockFetchTable
== NULL
))
4039 cciss_enter_performant_mode(h
,
4040 trans_support
& CFGTBL_Trans_use_short_tags
);
4042 /* Change the access methods to the performant access methods */
4043 h
->access
= SA5_performant_access
;
4044 h
->transMethod
= CFGTBL_Trans_Performant
;
4048 kfree(h
->blockFetchTable
);
4050 pci_free_consistent(h
->pdev
,
4051 h
->max_commands
* sizeof(__u64
),
4053 h
->reply_pool_dhandle
);
4056 } /* cciss_put_controller_into_performant_mode */
4058 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
4059 * controllers that are capable. If not, we use IO-APIC mode.
4062 static void cciss_interrupt_mode(ctlr_info_t
*h
)
4064 #ifdef CONFIG_PCI_MSI
4066 struct msix_entry cciss_msix_entries
[4] = { {0, 0}, {0, 1},
4070 /* Some boards advertise MSI but don't really support it */
4071 if ((h
->board_id
== 0x40700E11) || (h
->board_id
== 0x40800E11) ||
4072 (h
->board_id
== 0x40820E11) || (h
->board_id
== 0x40830E11))
4073 goto default_int_mode
;
4075 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSIX
)) {
4076 err
= pci_enable_msix(h
->pdev
, cciss_msix_entries
, 4);
4078 h
->intr
[0] = cciss_msix_entries
[0].vector
;
4079 h
->intr
[1] = cciss_msix_entries
[1].vector
;
4080 h
->intr
[2] = cciss_msix_entries
[2].vector
;
4081 h
->intr
[3] = cciss_msix_entries
[3].vector
;
4086 dev_warn(&h
->pdev
->dev
,
4087 "only %d MSI-X vectors available\n", err
);
4088 goto default_int_mode
;
4090 dev_warn(&h
->pdev
->dev
,
4091 "MSI-X init failed %d\n", err
);
4092 goto default_int_mode
;
4095 if (pci_find_capability(h
->pdev
, PCI_CAP_ID_MSI
)) {
4096 if (!pci_enable_msi(h
->pdev
))
4099 dev_warn(&h
->pdev
->dev
, "MSI init failed\n");
4102 #endif /* CONFIG_PCI_MSI */
4103 /* if we get here we're going to use the default interrupt mode */
4104 h
->intr
[h
->intr_mode
] = h
->pdev
->irq
;
4108 static int cciss_lookup_board_id(struct pci_dev
*pdev
, u32
*board_id
)
4111 u32 subsystem_vendor_id
, subsystem_device_id
;
4113 subsystem_vendor_id
= pdev
->subsystem_vendor
;
4114 subsystem_device_id
= pdev
->subsystem_device
;
4115 *board_id
= ((subsystem_device_id
<< 16) & 0xffff0000) |
4116 subsystem_vendor_id
;
4118 for (i
= 0; i
< ARRAY_SIZE(products
); i
++)
4119 if (*board_id
== products
[i
].board_id
)
4121 dev_warn(&pdev
->dev
, "unrecognized board ID: 0x%08x, ignoring.\n",
4126 static inline bool cciss_board_disabled(ctlr_info_t
*h
)
4130 (void) pci_read_config_word(h
->pdev
, PCI_COMMAND
, &command
);
4131 return ((command
& PCI_COMMAND_MEMORY
) == 0);
4134 static int cciss_pci_find_memory_BAR(struct pci_dev
*pdev
,
4135 unsigned long *memory_bar
)
4139 for (i
= 0; i
< DEVICE_COUNT_RESOURCE
; i
++)
4140 if (pci_resource_flags(pdev
, i
) & IORESOURCE_MEM
) {
4141 /* addressing mode bits already removed */
4142 *memory_bar
= pci_resource_start(pdev
, i
);
4143 dev_dbg(&pdev
->dev
, "memory BAR = %lx\n",
4147 dev_warn(&pdev
->dev
, "no memory BAR found\n");
4151 static int cciss_wait_for_board_state(struct pci_dev
*pdev
,
4152 void __iomem
*vaddr
, int wait_for_ready
)
4153 #define BOARD_READY 1
4154 #define BOARD_NOT_READY 0
4160 iterations
= CCISS_BOARD_READY_ITERATIONS
;
4162 iterations
= CCISS_BOARD_NOT_READY_ITERATIONS
;
4164 for (i
= 0; i
< iterations
; i
++) {
4165 scratchpad
= readl(vaddr
+ SA5_SCRATCHPAD_OFFSET
);
4166 if (wait_for_ready
) {
4167 if (scratchpad
== CCISS_FIRMWARE_READY
)
4170 if (scratchpad
!= CCISS_FIRMWARE_READY
)
4173 msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS
);
4175 dev_warn(&pdev
->dev
, "board not ready, timed out.\n");
4179 static int cciss_find_cfg_addrs(struct pci_dev
*pdev
, void __iomem
*vaddr
,
4180 u32
*cfg_base_addr
, u64
*cfg_base_addr_index
,
4183 *cfg_base_addr
= readl(vaddr
+ SA5_CTCFG_OFFSET
);
4184 *cfg_offset
= readl(vaddr
+ SA5_CTMEM_OFFSET
);
4185 *cfg_base_addr
&= (u32
) 0x0000ffff;
4186 *cfg_base_addr_index
= find_PCI_BAR_index(pdev
, *cfg_base_addr
);
4187 if (*cfg_base_addr_index
== -1) {
4188 dev_warn(&pdev
->dev
, "cannot find cfg_base_addr_index, "
4189 "*cfg_base_addr = 0x%08x\n", *cfg_base_addr
);
4195 static int cciss_find_cfgtables(ctlr_info_t
*h
)
4199 u64 cfg_base_addr_index
;
4203 rc
= cciss_find_cfg_addrs(h
->pdev
, h
->vaddr
, &cfg_base_addr
,
4204 &cfg_base_addr_index
, &cfg_offset
);
4207 h
->cfgtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4208 cfg_base_addr_index
) + cfg_offset
, sizeof(*h
->cfgtable
));
4211 rc
= write_driver_ver_to_cfgtable(h
->cfgtable
);
4214 /* Find performant mode table. */
4215 trans_offset
= readl(&h
->cfgtable
->TransMethodOffset
);
4216 h
->transtable
= remap_pci_mem(pci_resource_start(h
->pdev
,
4217 cfg_base_addr_index
)+cfg_offset
+trans_offset
,
4218 sizeof(*h
->transtable
));
4224 static void cciss_get_max_perf_mode_cmds(struct ctlr_info
*h
)
4226 h
->max_commands
= readl(&(h
->cfgtable
->MaxPerformantModeCommands
));
4228 /* Limit commands in memory limited kdump scenario. */
4229 if (reset_devices
&& h
->max_commands
> 32)
4230 h
->max_commands
= 32;
4232 if (h
->max_commands
< 16) {
4233 dev_warn(&h
->pdev
->dev
, "Controller reports "
4234 "max supported commands of %d, an obvious lie. "
4235 "Using 16. Ensure that firmware is up to date.\n",
4237 h
->max_commands
= 16;
4241 /* Interrogate the hardware for some limits:
4242 * max commands, max SG elements without chaining, and with chaining,
4243 * SG chain block size, etc.
4245 static void cciss_find_board_params(ctlr_info_t
*h
)
4247 cciss_get_max_perf_mode_cmds(h
);
4248 h
->nr_cmds
= h
->max_commands
- 4 - cciss_tape_cmds
;
4249 h
->maxsgentries
= readl(&(h
->cfgtable
->MaxSGElements
));
4251 * Limit in-command s/g elements to 32 save dma'able memory.
4252 * Howvever spec says if 0, use 31
4254 h
->max_cmd_sgentries
= 31;
4255 if (h
->maxsgentries
> 512) {
4256 h
->max_cmd_sgentries
= 32;
4257 h
->chainsize
= h
->maxsgentries
- h
->max_cmd_sgentries
+ 1;
4258 h
->maxsgentries
--; /* save one for chain pointer */
4260 h
->maxsgentries
= 31; /* default to traditional values */
4265 static inline bool CISS_signature_present(ctlr_info_t
*h
)
4267 if (!check_signature(h
->cfgtable
->Signature
, "CISS", 4)) {
4268 dev_warn(&h
->pdev
->dev
, "not a valid CISS config table\n");
4274 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
4275 static inline void cciss_enable_scsi_prefetch(ctlr_info_t
*h
)
4280 prefetch
= readl(&(h
->cfgtable
->SCSI_Prefetch
));
4282 writel(prefetch
, &(h
->cfgtable
->SCSI_Prefetch
));
4286 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
4287 * in a prefetch beyond physical memory.
4289 static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t
*h
)
4294 if (h
->board_id
!= 0x3225103C)
4296 dma_prefetch
= readl(h
->vaddr
+ I2O_DMA1_CFG
);
4297 dma_prefetch
|= 0x8000;
4298 writel(dma_prefetch
, h
->vaddr
+ I2O_DMA1_CFG
);
4299 pci_read_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, &dma_refetch
);
4301 pci_write_config_dword(h
->pdev
, PCI_COMMAND_PARITY
, dma_refetch
);
4304 static int cciss_pci_init(ctlr_info_t
*h
)
4306 int prod_index
, err
;
4308 prod_index
= cciss_lookup_board_id(h
->pdev
, &h
->board_id
);
4311 h
->product_name
= products
[prod_index
].product_name
;
4312 h
->access
= *(products
[prod_index
].access
);
4314 if (cciss_board_disabled(h
)) {
4315 dev_warn(&h
->pdev
->dev
, "controller appears to be disabled\n");
4319 pci_disable_link_state(h
->pdev
, PCIE_LINK_STATE_L0S
|
4320 PCIE_LINK_STATE_L1
| PCIE_LINK_STATE_CLKPM
);
4322 err
= pci_enable_device(h
->pdev
);
4324 dev_warn(&h
->pdev
->dev
, "Unable to Enable PCI device\n");
4328 err
= pci_request_regions(h
->pdev
, "cciss");
4330 dev_warn(&h
->pdev
->dev
,
4331 "Cannot obtain PCI resources, aborting\n");
4335 dev_dbg(&h
->pdev
->dev
, "irq = %x\n", h
->pdev
->irq
);
4336 dev_dbg(&h
->pdev
->dev
, "board_id = %x\n", h
->board_id
);
4338 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
4339 * else we use the IO-APIC interrupt assigned to us by system ROM.
4341 cciss_interrupt_mode(h
);
4342 err
= cciss_pci_find_memory_BAR(h
->pdev
, &h
->paddr
);
4344 goto err_out_free_res
;
4345 h
->vaddr
= remap_pci_mem(h
->paddr
, 0x250);
4348 goto err_out_free_res
;
4350 err
= cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
);
4352 goto err_out_free_res
;
4353 err
= cciss_find_cfgtables(h
);
4355 goto err_out_free_res
;
4357 cciss_find_board_params(h
);
4359 if (!CISS_signature_present(h
)) {
4361 goto err_out_free_res
;
4363 cciss_enable_scsi_prefetch(h
);
4364 cciss_p600_dma_prefetch_quirk(h
);
4365 err
= cciss_enter_simple_mode(h
);
4367 goto err_out_free_res
;
4368 cciss_put_controller_into_performant_mode(h
);
4373 * Deliberately omit pci_disable_device(): it does something nasty to
4374 * Smart Array controllers that pci_enable_device does not undo
4377 iounmap(h
->transtable
);
4379 iounmap(h
->cfgtable
);
4382 pci_release_regions(h
->pdev
);
4386 /* Function to find the first free pointer into our hba[] array
4387 * Returns -1 if no free entries are left.
4389 static int alloc_cciss_hba(struct pci_dev
*pdev
)
4393 for (i
= 0; i
< MAX_CTLR
; i
++) {
4397 h
= kzalloc(sizeof(ctlr_info_t
), GFP_KERNEL
);
4404 dev_warn(&pdev
->dev
, "This driver supports a maximum"
4405 " of %d controllers.\n", MAX_CTLR
);
4408 dev_warn(&pdev
->dev
, "out of memory.\n");
4412 static void free_hba(ctlr_info_t
*h
)
4416 hba
[h
->ctlr
] = NULL
;
4417 for (i
= 0; i
< h
->highest_lun
+ 1; i
++)
4418 if (h
->gendisk
[i
] != NULL
)
4419 put_disk(h
->gendisk
[i
]);
4423 /* Send a message CDB to the firmware. */
4424 static int cciss_message(struct pci_dev
*pdev
, unsigned char opcode
,
4428 CommandListHeader_struct CommandHeader
;
4429 RequestBlock_struct Request
;
4430 ErrDescriptor_struct ErrorDescriptor
;
4432 static const size_t cmd_sz
= sizeof(Command
) + sizeof(ErrorInfo_struct
);
4435 uint32_t paddr32
, tag
;
4436 void __iomem
*vaddr
;
4439 vaddr
= ioremap_nocache(pci_resource_start(pdev
, 0), pci_resource_len(pdev
, 0));
4443 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
4444 CCISS commands, so they must be allocated from the lower 4GiB of
4446 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
4452 cmd
= pci_alloc_consistent(pdev
, cmd_sz
, &paddr64
);
4458 /* This must fit, because of the 32-bit consistent DMA mask. Also,
4459 although there's no guarantee, we assume that the address is at
4460 least 4-byte aligned (most likely, it's page-aligned). */
4463 cmd
->CommandHeader
.ReplyQueue
= 0;
4464 cmd
->CommandHeader
.SGList
= 0;
4465 cmd
->CommandHeader
.SGTotal
= 0;
4466 cmd
->CommandHeader
.Tag
.lower
= paddr32
;
4467 cmd
->CommandHeader
.Tag
.upper
= 0;
4468 memset(&cmd
->CommandHeader
.LUN
.LunAddrBytes
, 0, 8);
4470 cmd
->Request
.CDBLen
= 16;
4471 cmd
->Request
.Type
.Type
= TYPE_MSG
;
4472 cmd
->Request
.Type
.Attribute
= ATTR_HEADOFQUEUE
;
4473 cmd
->Request
.Type
.Direction
= XFER_NONE
;
4474 cmd
->Request
.Timeout
= 0; /* Don't time out */
4475 cmd
->Request
.CDB
[0] = opcode
;
4476 cmd
->Request
.CDB
[1] = type
;
4477 memset(&cmd
->Request
.CDB
[2], 0, 14); /* the rest of the CDB is reserved */
4479 cmd
->ErrorDescriptor
.Addr
.lower
= paddr32
+ sizeof(Command
);
4480 cmd
->ErrorDescriptor
.Addr
.upper
= 0;
4481 cmd
->ErrorDescriptor
.Len
= sizeof(ErrorInfo_struct
);
4483 writel(paddr32
, vaddr
+ SA5_REQUEST_PORT_OFFSET
);
4485 for (i
= 0; i
< 10; i
++) {
4486 tag
= readl(vaddr
+ SA5_REPLY_PORT_OFFSET
);
4487 if ((tag
& ~3) == paddr32
)
4489 msleep(CCISS_POST_RESET_NOOP_TIMEOUT_MSECS
);
4494 /* we leak the DMA buffer here ... no choice since the controller could
4495 still complete the command. */
4498 "controller message %02x:%02x timed out\n",
4503 pci_free_consistent(pdev
, cmd_sz
, cmd
, paddr64
);
4506 dev_err(&pdev
->dev
, "controller message %02x:%02x failed\n",
4511 dev_info(&pdev
->dev
, "controller message %02x:%02x succeeded\n",
4516 #define cciss_noop(p) cciss_message(p, 3, 0)
4518 static int cciss_controller_hard_reset(struct pci_dev
*pdev
,
4519 void * __iomem vaddr
, u32 use_doorbell
)
4525 /* For everything after the P600, the PCI power state method
4526 * of resetting the controller doesn't work, so we have this
4527 * other way using the doorbell register.
4529 dev_info(&pdev
->dev
, "using doorbell to reset controller\n");
4530 writel(use_doorbell
, vaddr
+ SA5_DOORBELL
);
4531 } else { /* Try to do it the PCI power state way */
4533 /* Quoting from the Open CISS Specification: "The Power
4534 * Management Control/Status Register (CSR) controls the power
4535 * state of the device. The normal operating state is D0,
4536 * CSR=00h. The software off state is D3, CSR=03h. To reset
4537 * the controller, place the interface device in D3 then to D0,
4538 * this causes a secondary PCI reset which will reset the
4541 pos
= pci_find_capability(pdev
, PCI_CAP_ID_PM
);
4544 "cciss_controller_hard_reset: "
4545 "PCI PM not supported\n");
4548 dev_info(&pdev
->dev
, "using PCI PM to reset controller\n");
4549 /* enter the D3hot power management state */
4550 pci_read_config_word(pdev
, pos
+ PCI_PM_CTRL
, &pmcsr
);
4551 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4553 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4557 /* enter the D0 power management state */
4558 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
4560 pci_write_config_word(pdev
, pos
+ PCI_PM_CTRL
, pmcsr
);
4563 * The P600 requires a small delay when changing states.
4564 * Otherwise we may think the board did not reset and we bail.
4565 * This for kdump only and is particular to the P600.
4572 static void init_driver_version(char *driver_version
, int len
)
4574 memset(driver_version
, 0, len
);
4575 strncpy(driver_version
, "cciss " DRIVER_NAME
, len
- 1);
4578 static int write_driver_ver_to_cfgtable(CfgTable_struct __iomem
*cfgtable
)
4580 char *driver_version
;
4581 int i
, size
= sizeof(cfgtable
->driver_version
);
4583 driver_version
= kmalloc(size
, GFP_KERNEL
);
4584 if (!driver_version
)
4587 init_driver_version(driver_version
, size
);
4588 for (i
= 0; i
< size
; i
++)
4589 writeb(driver_version
[i
], &cfgtable
->driver_version
[i
]);
4590 kfree(driver_version
);
4594 static void read_driver_ver_from_cfgtable(CfgTable_struct __iomem
*cfgtable
,
4595 unsigned char *driver_ver
)
4599 for (i
= 0; i
< sizeof(cfgtable
->driver_version
); i
++)
4600 driver_ver
[i
] = readb(&cfgtable
->driver_version
[i
]);
4603 static int controller_reset_failed(CfgTable_struct __iomem
*cfgtable
)
4606 char *driver_ver
, *old_driver_ver
;
4607 int rc
, size
= sizeof(cfgtable
->driver_version
);
4609 old_driver_ver
= kmalloc(2 * size
, GFP_KERNEL
);
4610 if (!old_driver_ver
)
4612 driver_ver
= old_driver_ver
+ size
;
4614 /* After a reset, the 32 bytes of "driver version" in the cfgtable
4615 * should have been changed, otherwise we know the reset failed.
4617 init_driver_version(old_driver_ver
, size
);
4618 read_driver_ver_from_cfgtable(cfgtable
, driver_ver
);
4619 rc
= !memcmp(driver_ver
, old_driver_ver
, size
);
4620 kfree(old_driver_ver
);
4624 /* This does a hard reset of the controller using PCI power management
4625 * states or using the doorbell register. */
4626 static int cciss_kdump_hard_reset_controller(struct pci_dev
*pdev
)
4630 u64 cfg_base_addr_index
;
4631 void __iomem
*vaddr
;
4632 unsigned long paddr
;
4633 u32 misc_fw_support
;
4635 CfgTable_struct __iomem
*cfgtable
;
4638 u16 command_register
;
4640 /* For controllers as old a the p600, this is very nearly
4643 * pci_save_state(pci_dev);
4644 * pci_set_power_state(pci_dev, PCI_D3hot);
4645 * pci_set_power_state(pci_dev, PCI_D0);
4646 * pci_restore_state(pci_dev);
4648 * For controllers newer than the P600, the pci power state
4649 * method of resetting doesn't work so we have another way
4650 * using the doorbell register.
4653 /* Exclude 640x boards. These are two pci devices in one slot
4654 * which share a battery backed cache module. One controls the
4655 * cache, the other accesses the cache through the one that controls
4656 * it. If we reset the one controlling the cache, the other will
4657 * likely not be happy. Just forbid resetting this conjoined mess.
4659 cciss_lookup_board_id(pdev
, &board_id
);
4660 if (!ctlr_is_resettable(board_id
)) {
4661 dev_warn(&pdev
->dev
, "Cannot reset Smart Array 640x "
4662 "due to shared cache module.");
4666 /* if controller is soft- but not hard resettable... */
4667 if (!ctlr_is_hard_resettable(board_id
))
4668 return -ENOTSUPP
; /* try soft reset later. */
4670 /* Save the PCI command register */
4671 pci_read_config_word(pdev
, 4, &command_register
);
4672 /* Turn the board off. This is so that later pci_restore_state()
4673 * won't turn the board on before the rest of config space is ready.
4675 pci_disable_device(pdev
);
4676 pci_save_state(pdev
);
4678 /* find the first memory BAR, so we can find the cfg table */
4679 rc
= cciss_pci_find_memory_BAR(pdev
, &paddr
);
4682 vaddr
= remap_pci_mem(paddr
, 0x250);
4686 /* find cfgtable in order to check if reset via doorbell is supported */
4687 rc
= cciss_find_cfg_addrs(pdev
, vaddr
, &cfg_base_addr
,
4688 &cfg_base_addr_index
, &cfg_offset
);
4691 cfgtable
= remap_pci_mem(pci_resource_start(pdev
,
4692 cfg_base_addr_index
) + cfg_offset
, sizeof(*cfgtable
));
4697 rc
= write_driver_ver_to_cfgtable(cfgtable
);
4701 /* If reset via doorbell register is supported, use that.
4702 * There are two such methods. Favor the newest method.
4704 misc_fw_support
= readl(&cfgtable
->misc_fw_support
);
4705 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET2
;
4707 use_doorbell
= DOORBELL_CTLR_RESET2
;
4709 use_doorbell
= misc_fw_support
& MISC_FW_DOORBELL_RESET
;
4711 dev_warn(&pdev
->dev
, "Controller claims that "
4712 "'Bit 2 doorbell reset' is "
4713 "supported, but not 'bit 5 doorbell reset'. "
4714 "Firmware update is recommended.\n");
4715 rc
= -ENOTSUPP
; /* use the soft reset */
4716 goto unmap_cfgtable
;
4720 rc
= cciss_controller_hard_reset(pdev
, vaddr
, use_doorbell
);
4722 goto unmap_cfgtable
;
4723 pci_restore_state(pdev
);
4724 rc
= pci_enable_device(pdev
);
4726 dev_warn(&pdev
->dev
, "failed to enable device.\n");
4727 goto unmap_cfgtable
;
4729 pci_write_config_word(pdev
, 4, command_register
);
4731 /* Some devices (notably the HP Smart Array 5i Controller)
4732 need a little pause here */
4733 msleep(CCISS_POST_RESET_PAUSE_MSECS
);
4735 /* Wait for board to become not ready, then ready. */
4736 dev_info(&pdev
->dev
, "Waiting for board to reset.\n");
4737 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_NOT_READY
);
4739 dev_warn(&pdev
->dev
, "Failed waiting for board to hard reset."
4740 " Will try soft reset.\n");
4741 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4742 goto unmap_cfgtable
;
4744 rc
= cciss_wait_for_board_state(pdev
, vaddr
, BOARD_READY
);
4746 dev_warn(&pdev
->dev
,
4747 "failed waiting for board to become ready "
4748 "after hard reset\n");
4749 goto unmap_cfgtable
;
4752 rc
= controller_reset_failed(vaddr
);
4754 goto unmap_cfgtable
;
4756 dev_warn(&pdev
->dev
, "Unable to successfully hard reset "
4757 "controller. Will try soft reset.\n");
4758 rc
= -ENOTSUPP
; /* Not expected, but try soft reset later */
4760 dev_info(&pdev
->dev
, "Board ready after hard reset.\n");
4771 static int cciss_init_reset_devices(struct pci_dev
*pdev
)
4778 /* Reset the controller with a PCI power-cycle or via doorbell */
4779 rc
= cciss_kdump_hard_reset_controller(pdev
);
4781 /* -ENOTSUPP here means we cannot reset the controller
4782 * but it's already (and still) up and running in
4783 * "performant mode". Or, it might be 640x, which can't reset
4784 * due to concerns about shared bbwc between 6402/6404 pair.
4786 if (rc
== -ENOTSUPP
)
4787 return rc
; /* just try to do the kdump anyhow. */
4791 /* Now try to get the controller to respond to a no-op */
4792 dev_warn(&pdev
->dev
, "Waiting for controller to respond to no-op\n");
4793 for (i
= 0; i
< CCISS_POST_RESET_NOOP_RETRIES
; i
++) {
4794 if (cciss_noop(pdev
) == 0)
4797 dev_warn(&pdev
->dev
, "no-op failed%s\n",
4798 (i
< CCISS_POST_RESET_NOOP_RETRIES
- 1 ?
4799 "; re-trying" : ""));
4800 msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS
);
4805 static int cciss_allocate_cmd_pool(ctlr_info_t
*h
)
4807 h
->cmd_pool_bits
= kmalloc(BITS_TO_LONGS(h
->nr_cmds
) *
4808 sizeof(unsigned long), GFP_KERNEL
);
4809 h
->cmd_pool
= pci_alloc_consistent(h
->pdev
,
4810 h
->nr_cmds
* sizeof(CommandList_struct
),
4811 &(h
->cmd_pool_dhandle
));
4812 h
->errinfo_pool
= pci_alloc_consistent(h
->pdev
,
4813 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4814 &(h
->errinfo_pool_dhandle
));
4815 if ((h
->cmd_pool_bits
== NULL
)
4816 || (h
->cmd_pool
== NULL
)
4817 || (h
->errinfo_pool
== NULL
)) {
4818 dev_err(&h
->pdev
->dev
, "out of memory");
4824 static int cciss_allocate_scatterlists(ctlr_info_t
*h
)
4828 /* zero it, so that on free we need not know how many were alloc'ed */
4829 h
->scatter_list
= kzalloc(h
->max_commands
*
4830 sizeof(struct scatterlist
*), GFP_KERNEL
);
4831 if (!h
->scatter_list
)
4834 for (i
= 0; i
< h
->nr_cmds
; i
++) {
4835 h
->scatter_list
[i
] = kmalloc(sizeof(struct scatterlist
) *
4836 h
->maxsgentries
, GFP_KERNEL
);
4837 if (h
->scatter_list
[i
] == NULL
) {
4838 dev_err(&h
->pdev
->dev
, "could not allocate "
4846 static void cciss_free_scatterlists(ctlr_info_t
*h
)
4850 if (h
->scatter_list
) {
4851 for (i
= 0; i
< h
->nr_cmds
; i
++)
4852 kfree(h
->scatter_list
[i
]);
4853 kfree(h
->scatter_list
);
4857 static void cciss_free_cmd_pool(ctlr_info_t
*h
)
4859 kfree(h
->cmd_pool_bits
);
4861 pci_free_consistent(h
->pdev
,
4862 h
->nr_cmds
* sizeof(CommandList_struct
),
4863 h
->cmd_pool
, h
->cmd_pool_dhandle
);
4864 if (h
->errinfo_pool
)
4865 pci_free_consistent(h
->pdev
,
4866 h
->nr_cmds
* sizeof(ErrorInfo_struct
),
4867 h
->errinfo_pool
, h
->errinfo_pool_dhandle
);
4870 static int cciss_request_irq(ctlr_info_t
*h
,
4871 irqreturn_t (*msixhandler
)(int, void *),
4872 irqreturn_t (*intxhandler
)(int, void *))
4874 if (h
->msix_vector
|| h
->msi_vector
) {
4875 if (!request_irq(h
->intr
[h
->intr_mode
], msixhandler
,
4878 dev_err(&h
->pdev
->dev
, "Unable to get msi irq %d"
4879 " for %s\n", h
->intr
[h
->intr_mode
],
4884 if (!request_irq(h
->intr
[h
->intr_mode
], intxhandler
,
4885 IRQF_SHARED
, h
->devname
, h
))
4887 dev_err(&h
->pdev
->dev
, "Unable to get irq %d for %s\n",
4888 h
->intr
[h
->intr_mode
], h
->devname
);
4892 static int cciss_kdump_soft_reset(ctlr_info_t
*h
)
4894 if (cciss_send_reset(h
, CTLR_LUNID
, CCISS_RESET_TYPE_CONTROLLER
)) {
4895 dev_warn(&h
->pdev
->dev
, "Resetting array controller failed.\n");
4899 dev_info(&h
->pdev
->dev
, "Waiting for board to soft reset.\n");
4900 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_NOT_READY
)) {
4901 dev_warn(&h
->pdev
->dev
, "Soft reset had no effect.\n");
4905 dev_info(&h
->pdev
->dev
, "Board reset, awaiting READY status.\n");
4906 if (cciss_wait_for_board_state(h
->pdev
, h
->vaddr
, BOARD_READY
)) {
4907 dev_warn(&h
->pdev
->dev
, "Board failed to become ready "
4908 "after soft reset.\n");
4915 static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t
*h
)
4919 free_irq(h
->intr
[h
->intr_mode
], h
);
4920 #ifdef CONFIG_PCI_MSI
4922 pci_disable_msix(h
->pdev
);
4923 else if (h
->msi_vector
)
4924 pci_disable_msi(h
->pdev
);
4925 #endif /* CONFIG_PCI_MSI */
4926 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
4927 cciss_free_scatterlists(h
);
4928 cciss_free_cmd_pool(h
);
4929 kfree(h
->blockFetchTable
);
4931 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
4932 h
->reply_pool
, h
->reply_pool_dhandle
);
4934 iounmap(h
->transtable
);
4936 iounmap(h
->cfgtable
);
4939 unregister_blkdev(h
->major
, h
->devname
);
4940 cciss_destroy_hba_sysfs_entry(h
);
4941 pci_release_regions(h
->pdev
);
4947 * This is it. Find all the controllers and register them. I really hate
4948 * stealing all these major device numbers.
4949 * returns the number of block devices registered.
4951 static int cciss_init_one(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
4956 int try_soft_reset
= 0;
4957 int dac
, return_code
;
4958 InquiryData_struct
*inq_buff
;
4960 unsigned long flags
;
4962 rc
= cciss_init_reset_devices(pdev
);
4964 if (rc
!= -ENOTSUPP
)
4966 /* If the reset fails in a particular way (it has no way to do
4967 * a proper hard reset, so returns -ENOTSUPP) we can try to do
4968 * a soft reset once we get the controller configured up to the
4969 * point that it can accept a command.
4975 reinit_after_soft_reset
:
4977 i
= alloc_cciss_hba(pdev
);
4983 h
->busy_initializing
= 1;
4984 h
->intr_mode
= cciss_simple_mode
? SIMPLE_MODE_INT
: PERF_MODE_INT
;
4985 INIT_LIST_HEAD(&h
->cmpQ
);
4986 INIT_LIST_HEAD(&h
->reqQ
);
4987 mutex_init(&h
->busy_shutting_down
);
4989 if (cciss_pci_init(h
) != 0)
4990 goto clean_no_release_regions
;
4992 sprintf(h
->devname
, "cciss%d", i
);
4995 if (cciss_tape_cmds
< 2)
4996 cciss_tape_cmds
= 2;
4997 if (cciss_tape_cmds
> 16)
4998 cciss_tape_cmds
= 16;
5000 init_completion(&h
->scan_wait
);
5002 if (cciss_create_hba_sysfs_entry(h
))
5005 /* configure PCI DMA stuff */
5006 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)))
5008 else if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)))
5011 dev_err(&h
->pdev
->dev
, "no suitable DMA available\n");
5016 * register with the major number, or get a dynamic major number
5017 * by passing 0 as argument. This is done for greater than
5018 * 8 controller support.
5020 if (i
< MAX_CTLR_ORIG
)
5021 h
->major
= COMPAQ_CISS_MAJOR
+ i
;
5022 rc
= register_blkdev(h
->major
, h
->devname
);
5023 if (rc
== -EBUSY
|| rc
== -EINVAL
) {
5024 dev_err(&h
->pdev
->dev
,
5025 "Unable to get major number %d for %s "
5026 "on hba %d\n", h
->major
, h
->devname
, i
);
5029 if (i
>= MAX_CTLR_ORIG
)
5033 /* make sure the board interrupts are off */
5034 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5035 rc
= cciss_request_irq(h
, do_cciss_msix_intr
, do_cciss_intx
);
5039 dev_info(&h
->pdev
->dev
, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
5040 h
->devname
, pdev
->device
, pci_name(pdev
),
5041 h
->intr
[h
->intr_mode
], dac
? "" : " not");
5043 if (cciss_allocate_cmd_pool(h
))
5046 if (cciss_allocate_scatterlists(h
))
5049 h
->cmd_sg_list
= cciss_allocate_sg_chain_blocks(h
,
5050 h
->chainsize
, h
->nr_cmds
);
5051 if (!h
->cmd_sg_list
&& h
->chainsize
> 0)
5054 spin_lock_init(&h
->lock
);
5056 /* Initialize the pdev driver private data.
5057 have it point to h. */
5058 pci_set_drvdata(pdev
, h
);
5059 /* command and error info recs zeroed out before
5061 bitmap_zero(h
->cmd_pool_bits
, h
->nr_cmds
);
5064 h
->highest_lun
= -1;
5065 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
5067 h
->gendisk
[j
] = NULL
;
5070 /* At this point, the controller is ready to take commands.
5071 * Now, if reset_devices and the hard reset didn't work, try
5072 * the soft reset and see if that works.
5074 if (try_soft_reset
) {
5076 /* This is kind of gross. We may or may not get a completion
5077 * from the soft reset command, and if we do, then the value
5078 * from the fifo may or may not be valid. So, we wait 10 secs
5079 * after the reset throwing away any completions we get during
5080 * that time. Unregister the interrupt handler and register
5081 * fake ones to scoop up any residual completions.
5083 spin_lock_irqsave(&h
->lock
, flags
);
5084 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5085 spin_unlock_irqrestore(&h
->lock
, flags
);
5086 free_irq(h
->intr
[h
->intr_mode
], h
);
5087 rc
= cciss_request_irq(h
, cciss_msix_discard_completions
,
5088 cciss_intx_discard_completions
);
5090 dev_warn(&h
->pdev
->dev
, "Failed to request_irq after "
5095 rc
= cciss_kdump_soft_reset(h
);
5097 dev_warn(&h
->pdev
->dev
, "Soft reset failed.\n");
5101 dev_info(&h
->pdev
->dev
, "Board READY.\n");
5102 dev_info(&h
->pdev
->dev
,
5103 "Waiting for stale completions to drain.\n");
5104 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5106 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5108 rc
= controller_reset_failed(h
->cfgtable
);
5110 dev_info(&h
->pdev
->dev
,
5111 "Soft reset appears to have failed.\n");
5113 /* since the controller's reset, we have to go back and re-init
5114 * everything. Easiest to just forget what we've done and do it
5117 cciss_undo_allocations_after_kdump_soft_reset(h
);
5120 /* don't go to clean4, we already unallocated */
5123 goto reinit_after_soft_reset
;
5126 cciss_scsi_setup(h
);
5128 /* Turn the interrupts on so we can service requests */
5129 h
->access
.set_intr_mask(h
, CCISS_INTR_ON
);
5131 /* Get the firmware version */
5132 inq_buff
= kzalloc(sizeof(InquiryData_struct
), GFP_KERNEL
);
5133 if (inq_buff
== NULL
) {
5134 dev_err(&h
->pdev
->dev
, "out of memory\n");
5138 return_code
= sendcmd_withirq(h
, CISS_INQUIRY
, inq_buff
,
5139 sizeof(InquiryData_struct
), 0, CTLR_LUNID
, TYPE_CMD
);
5140 if (return_code
== IO_OK
) {
5141 h
->firm_ver
[0] = inq_buff
->data_byte
[32];
5142 h
->firm_ver
[1] = inq_buff
->data_byte
[33];
5143 h
->firm_ver
[2] = inq_buff
->data_byte
[34];
5144 h
->firm_ver
[3] = inq_buff
->data_byte
[35];
5145 } else { /* send command failed */
5146 dev_warn(&h
->pdev
->dev
, "unable to determine firmware"
5147 " version of controller\n");
5153 h
->cciss_max_sectors
= 8192;
5155 rebuild_lun_table(h
, 1, 0);
5156 cciss_engage_scsi(h
);
5157 h
->busy_initializing
= 0;
5161 cciss_free_cmd_pool(h
);
5162 cciss_free_scatterlists(h
);
5163 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5164 free_irq(h
->intr
[h
->intr_mode
], h
);
5166 unregister_blkdev(h
->major
, h
->devname
);
5168 cciss_destroy_hba_sysfs_entry(h
);
5170 pci_release_regions(pdev
);
5171 clean_no_release_regions
:
5172 h
->busy_initializing
= 0;
5175 * Deliberately omit pci_disable_device(): it does something nasty to
5176 * Smart Array controllers that pci_enable_device does not undo
5178 pci_set_drvdata(pdev
, NULL
);
5183 static void cciss_shutdown(struct pci_dev
*pdev
)
5189 h
= pci_get_drvdata(pdev
);
5190 flush_buf
= kzalloc(4, GFP_KERNEL
);
5192 dev_warn(&h
->pdev
->dev
, "cache not flushed, out of memory.\n");
5195 /* write all data in the battery backed cache to disk */
5196 return_code
= sendcmd_withirq(h
, CCISS_CACHE_FLUSH
, flush_buf
,
5197 4, 0, CTLR_LUNID
, TYPE_CMD
);
5199 if (return_code
!= IO_OK
)
5200 dev_warn(&h
->pdev
->dev
, "Error flushing cache\n");
5201 h
->access
.set_intr_mask(h
, CCISS_INTR_OFF
);
5202 free_irq(h
->intr
[h
->intr_mode
], h
);
5205 static int cciss_enter_simple_mode(struct ctlr_info
*h
)
5209 trans_support
= readl(&(h
->cfgtable
->TransportSupport
));
5210 if (!(trans_support
& SIMPLE_MODE
))
5213 h
->max_commands
= readl(&(h
->cfgtable
->CmdsOutMax
));
5214 writel(CFGTBL_Trans_Simple
, &(h
->cfgtable
->HostWrite
.TransportRequest
));
5215 writel(CFGTBL_ChangeReq
, h
->vaddr
+ SA5_DOORBELL
);
5216 cciss_wait_for_mode_change_ack(h
);
5218 if (!(readl(&(h
->cfgtable
->TransportActive
)) & CFGTBL_Trans_Simple
)) {
5219 dev_warn(&h
->pdev
->dev
, "unable to get board into simple mode\n");
5222 h
->transMethod
= CFGTBL_Trans_Simple
;
5227 static void cciss_remove_one(struct pci_dev
*pdev
)
5232 if (pci_get_drvdata(pdev
) == NULL
) {
5233 dev_err(&pdev
->dev
, "Unable to remove device\n");
5237 h
= pci_get_drvdata(pdev
);
5239 if (hba
[i
] == NULL
) {
5240 dev_err(&pdev
->dev
, "device appears to already be removed\n");
5244 mutex_lock(&h
->busy_shutting_down
);
5246 remove_from_scan_list(h
);
5247 remove_proc_entry(h
->devname
, proc_cciss
);
5248 unregister_blkdev(h
->major
, h
->devname
);
5250 /* remove it from the disk list */
5251 for (j
= 0; j
< CISS_MAX_LUN
; j
++) {
5252 struct gendisk
*disk
= h
->gendisk
[j
];
5254 struct request_queue
*q
= disk
->queue
;
5256 if (disk
->flags
& GENHD_FL_UP
) {
5257 cciss_destroy_ld_sysfs_entry(h
, j
, 1);
5261 blk_cleanup_queue(q
);
5265 #ifdef CONFIG_CISS_SCSI_TAPE
5266 cciss_unregister_scsi(h
); /* unhook from SCSI subsystem */
5269 cciss_shutdown(pdev
);
5271 #ifdef CONFIG_PCI_MSI
5273 pci_disable_msix(h
->pdev
);
5274 else if (h
->msi_vector
)
5275 pci_disable_msi(h
->pdev
);
5276 #endif /* CONFIG_PCI_MSI */
5278 iounmap(h
->transtable
);
5279 iounmap(h
->cfgtable
);
5282 cciss_free_cmd_pool(h
);
5283 /* Free up sg elements */
5284 for (j
= 0; j
< h
->nr_cmds
; j
++)
5285 kfree(h
->scatter_list
[j
]);
5286 kfree(h
->scatter_list
);
5287 cciss_free_sg_chain_blocks(h
->cmd_sg_list
, h
->nr_cmds
);
5288 kfree(h
->blockFetchTable
);
5290 pci_free_consistent(h
->pdev
, h
->max_commands
* sizeof(__u64
),
5291 h
->reply_pool
, h
->reply_pool_dhandle
);
5293 * Deliberately omit pci_disable_device(): it does something nasty to
5294 * Smart Array controllers that pci_enable_device does not undo
5296 pci_release_regions(pdev
);
5297 pci_set_drvdata(pdev
, NULL
);
5298 cciss_destroy_hba_sysfs_entry(h
);
5299 mutex_unlock(&h
->busy_shutting_down
);
5303 static struct pci_driver cciss_pci_driver
= {
5305 .probe
= cciss_init_one
,
5306 .remove
= cciss_remove_one
,
5307 .id_table
= cciss_pci_device_id
, /* id_table */
5308 .shutdown
= cciss_shutdown
,
5312 * This is it. Register the PCI driver information for the cards we control
5313 * the OS will call our registered routines when it finds one of our cards.
5315 static int __init
cciss_init(void)
5320 * The hardware requires that commands are aligned on a 64-bit
5321 * boundary. Given that we use pci_alloc_consistent() to allocate an
5322 * array of them, the size must be a multiple of 8 bytes.
5324 BUILD_BUG_ON(sizeof(CommandList_struct
) % COMMANDLIST_ALIGNMENT
);
5325 printk(KERN_INFO DRIVER_NAME
"\n");
5327 err
= bus_register(&cciss_bus_type
);
5331 /* Start the scan thread */
5332 cciss_scan_thread
= kthread_run(scan_thread
, NULL
, "cciss_scan");
5333 if (IS_ERR(cciss_scan_thread
)) {
5334 err
= PTR_ERR(cciss_scan_thread
);
5335 goto err_bus_unregister
;
5338 /* Register for our PCI devices */
5339 err
= pci_register_driver(&cciss_pci_driver
);
5341 goto err_thread_stop
;
5346 kthread_stop(cciss_scan_thread
);
5348 bus_unregister(&cciss_bus_type
);
5353 static void __exit
cciss_cleanup(void)
5357 pci_unregister_driver(&cciss_pci_driver
);
5358 /* double check that all controller entrys have been removed */
5359 for (i
= 0; i
< MAX_CTLR
; i
++) {
5360 if (hba
[i
] != NULL
) {
5361 dev_warn(&hba
[i
]->pdev
->dev
,
5362 "had to remove controller\n");
5363 cciss_remove_one(hba
[i
]->pdev
);
5366 kthread_stop(cciss_scan_thread
);
5368 remove_proc_entry("driver/cciss", NULL
);
5369 bus_unregister(&cciss_bus_type
);
5372 module_init(cciss_init
);
5373 module_exit(cciss_cleanup
);