2 * Disk Array driver for HP Smart Array controllers.
3 * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
23 #include <linux/module.h>
24 #include <linux/interrupt.h>
25 #include <linux/types.h>
26 #include <linux/pci.h>
27 #include <linux/kernel.h>
28 #include <linux/slab.h>
29 #include <linux/delay.h>
30 #include <linux/major.h>
32 #include <linux/bio.h>
33 #include <linux/blkpg.h>
34 #include <linux/timer.h>
35 #include <linux/proc_fs.h>
36 #include <linux/seq_file.h>
37 #include <linux/init.h>
38 #include <linux/hdreg.h>
39 #include <linux/spinlock.h>
40 #include <linux/compat.h>
41 #include <linux/blktrace_api.h>
42 #include <asm/uaccess.h>
45 #include <linux/dma-mapping.h>
46 #include <linux/blkdev.h>
47 #include <linux/genhd.h>
48 #include <linux/completion.h>
49 #include <scsi/scsi.h>
51 #include <scsi/scsi_ioctl.h>
52 #include <linux/cdrom.h>
53 #include <linux/scatterlist.h>
54 #include <linux/kthread.h>
56 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
57 #define DRIVER_NAME "HP CISS Driver (v 3.6.20)"
58 #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 20)
60 /* Embedded module documentation macros - see modules.h */
61 MODULE_AUTHOR("Hewlett-Packard Company");
62 MODULE_DESCRIPTION("Driver for HP Smart Array Controllers");
63 MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
64 " SA6i P600 P800 P400 P400i E200 E200i E500 P700m"
65 " Smart Array G2 Series SAS/SATA Controllers");
66 MODULE_VERSION("3.6.20");
67 MODULE_LICENSE("GPL");
69 #include "cciss_cmd.h"
71 #include <linux/cciss_ioctl.h>
73 /* define the PCI info for the cards we can control */
74 static const struct pci_device_id cciss_pci_device_id[] = {
75 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070},
76 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080},
77 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082},
78 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083},
79 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091},
80 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A},
81 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B},
82 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C},
83 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D},
84 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225},
85 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223},
86 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234},
87 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235},
88 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211},
89 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212},
90 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213},
91 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214},
92 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215},
93 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237},
94 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D},
95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A},
101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B},
102 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
103 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
107 MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
109 /* board_id = Subsystem Device ID & Vendor ID
110 * product = Marketing Name for the board
111 * access = Address of the struct of function pointers
113 static struct board_type products[] = {
114 {0x40700E11, "Smart Array 5300", &SA5_access},
115 {0x40800E11, "Smart Array 5i", &SA5B_access},
116 {0x40820E11, "Smart Array 532", &SA5B_access},
117 {0x40830E11, "Smart Array 5312", &SA5B_access},
118 {0x409A0E11, "Smart Array 641", &SA5_access},
119 {0x409B0E11, "Smart Array 642", &SA5_access},
120 {0x409C0E11, "Smart Array 6400", &SA5_access},
121 {0x409D0E11, "Smart Array 6400 EM", &SA5_access},
122 {0x40910E11, "Smart Array 6i", &SA5_access},
123 {0x3225103C, "Smart Array P600", &SA5_access},
124 {0x3223103C, "Smart Array P800", &SA5_access},
125 {0x3234103C, "Smart Array P400", &SA5_access},
126 {0x3235103C, "Smart Array P400i", &SA5_access},
127 {0x3211103C, "Smart Array E200i", &SA5_access},
128 {0x3212103C, "Smart Array E200", &SA5_access},
129 {0x3213103C, "Smart Array E200i", &SA5_access},
130 {0x3214103C, "Smart Array E200i", &SA5_access},
131 {0x3215103C, "Smart Array E200i", &SA5_access},
132 {0x3237103C, "Smart Array E500", &SA5_access},
133 {0x323D103C, "Smart Array P700m", &SA5_access},
134 {0x3241103C, "Smart Array P212", &SA5_access},
135 {0x3243103C, "Smart Array P410", &SA5_access},
136 {0x3245103C, "Smart Array P410i", &SA5_access},
137 {0x3247103C, "Smart Array P411", &SA5_access},
138 {0x3249103C, "Smart Array P812", &SA5_access},
139 {0x324A103C, "Smart Array P712m", &SA5_access},
140 {0x324B103C, "Smart Array P711m", &SA5_access},
141 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
144 /* How long to wait (in milliseconds) for board to go into simple mode */
145 #define MAX_CONFIG_WAIT 30000
146 #define MAX_IOCTL_CONFIG_WAIT 1000
148 /*define how many times we will try a command because of bus resets */
149 #define MAX_CMD_RETRIES 3
153 /* Originally cciss driver only supports 8 major numbers */
154 #define MAX_CTLR_ORIG 8
156 static ctlr_info_t *hba[MAX_CTLR];
158 static void do_cciss_request(struct request_queue *q);
159 static irqreturn_t do_cciss_intr(int irq, void *dev_id);
160 static int cciss_open(struct block_device *bdev, fmode_t mode);
161 static int cciss_release(struct gendisk *disk, fmode_t mode);
162 static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
163 unsigned int cmd, unsigned long arg);
164 static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo);
166 static int cciss_revalidate(struct gendisk *disk);
167 static int rebuild_lun_table(ctlr_info_t *h, int first_time);
168 static int deregister_disk(ctlr_info_t *h, int drv_index,
171 static void cciss_read_capacity(int ctlr, int logvol, int withirq,
172 sector_t *total_size, unsigned int *block_size);
173 static void cciss_read_capacity_16(int ctlr, int logvol, int withirq,
174 sector_t *total_size, unsigned int *block_size);
175 static void cciss_geometry_inquiry(int ctlr, int logvol,
176 int withirq, sector_t total_size,
177 unsigned int block_size, InquiryData_struct *inq_buff,
178 drive_info_struct *drv);
179 static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *,
181 static void start_io(ctlr_info_t *h);
182 static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size,
183 unsigned int use_unit_num, unsigned int log_unit,
184 __u8 page_code, unsigned char *scsi3addr, int cmd_type);
185 static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
186 unsigned int use_unit_num, unsigned int log_unit,
187 __u8 page_code, int cmd_type);
189 static void fail_all_cmds(unsigned long ctlr);
190 static int scan_thread(void *data);
191 static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c);
193 #ifdef CONFIG_PROC_FS
194 static void cciss_procinit(int i);
196 static void cciss_procinit(int i)
199 #endif /* CONFIG_PROC_FS */
202 static int cciss_compat_ioctl(struct block_device *, fmode_t,
203 unsigned, unsigned long);
206 static struct block_device_operations cciss_fops = {
207 .owner = THIS_MODULE,
209 .release = cciss_release,
210 .locked_ioctl = cciss_ioctl,
211 .getgeo = cciss_getgeo,
213 .compat_ioctl = cciss_compat_ioctl,
215 .revalidate_disk = cciss_revalidate,
219 * Enqueuing and dequeuing functions for cmdlists.
221 static inline void addQ(struct hlist_head *list, CommandList_struct *c)
223 hlist_add_head(&c->list, list);
226 static inline void removeQ(CommandList_struct *c)
228 if (WARN_ON(hlist_unhashed(&c->list)))
231 hlist_del_init(&c->list);
234 #include "cciss_scsi.c" /* For SCSI tape support */
236 #define RAID_UNKNOWN 6
238 #ifdef CONFIG_PROC_FS
241 * Report information about this controller.
243 #define ENG_GIG 1000000000
244 #define ENG_GIG_FACTOR (ENG_GIG/512)
245 #define ENGAGE_SCSI "engage scsi"
246 static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
250 static struct proc_dir_entry *proc_cciss;
252 static void cciss_seq_show_header(struct seq_file *seq)
254 ctlr_info_t *h = seq->private;
256 seq_printf(seq, "%s: HP %s Controller\n"
257 "Board ID: 0x%08lx\n"
258 "Firmware Version: %c%c%c%c\n"
260 "Logical drives: %d\n"
261 "Current Q depth: %d\n"
262 "Current # commands on controller: %d\n"
263 "Max Q depth since init: %d\n"
264 "Max # commands on controller since init: %d\n"
265 "Max SG entries since init: %d\n",
268 (unsigned long)h->board_id,
269 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2],
270 h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT],
272 h->Qdepth, h->commands_outstanding,
273 h->maxQsinceinit, h->max_outstanding, h->maxSG);
275 #ifdef CONFIG_CISS_SCSI_TAPE
276 cciss_seq_tape_report(seq, h->ctlr);
277 #endif /* CONFIG_CISS_SCSI_TAPE */
280 static void *cciss_seq_start(struct seq_file *seq, loff_t *pos)
282 ctlr_info_t *h = seq->private;
283 unsigned ctlr = h->ctlr;
286 /* prevent displaying bogus info during configuration
287 * or deconfiguration of a logical volume
289 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
290 if (h->busy_configuring) {
291 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
292 return ERR_PTR(-EBUSY);
294 h->busy_configuring = 1;
295 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
298 cciss_seq_show_header(seq);
303 static int cciss_seq_show(struct seq_file *seq, void *v)
305 sector_t vol_sz, vol_sz_frac;
306 ctlr_info_t *h = seq->private;
307 unsigned ctlr = h->ctlr;
309 drive_info_struct *drv = &h->drv[*pos];
311 if (*pos > h->highest_lun)
317 vol_sz = drv->nr_blocks;
318 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
320 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
322 if (drv->raid_level > 5)
323 drv->raid_level = RAID_UNKNOWN;
324 seq_printf(seq, "cciss/c%dd%d:"
325 "\t%4u.%02uGB\tRAID %s\n",
326 ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac,
327 raid_label[drv->raid_level]);
331 static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos)
333 ctlr_info_t *h = seq->private;
335 if (*pos > h->highest_lun)
342 static void cciss_seq_stop(struct seq_file *seq, void *v)
344 ctlr_info_t *h = seq->private;
346 /* Only reset h->busy_configuring if we succeeded in setting
347 * it during cciss_seq_start. */
348 if (v == ERR_PTR(-EBUSY))
351 h->busy_configuring = 0;
354 static struct seq_operations cciss_seq_ops = {
355 .start = cciss_seq_start,
356 .show = cciss_seq_show,
357 .next = cciss_seq_next,
358 .stop = cciss_seq_stop,
361 static int cciss_seq_open(struct inode *inode, struct file *file)
363 int ret = seq_open(file, &cciss_seq_ops);
364 struct seq_file *seq = file->private_data;
367 seq->private = PDE(inode)->data;
373 cciss_proc_write(struct file *file, const char __user *buf,
374 size_t length, loff_t *ppos)
379 #ifndef CONFIG_CISS_SCSI_TAPE
383 if (!buf || length > PAGE_SIZE - 1)
386 buffer = (char *)__get_free_page(GFP_KERNEL);
391 if (copy_from_user(buffer, buf, length))
393 buffer[length] = '\0';
395 #ifdef CONFIG_CISS_SCSI_TAPE
396 if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) {
397 struct seq_file *seq = file->private_data;
398 ctlr_info_t *h = seq->private;
401 rc = cciss_engage_scsi(h->ctlr);
407 #endif /* CONFIG_CISS_SCSI_TAPE */
409 /* might be nice to have "disengage" too, but it's not
410 safely possible. (only 1 module use count, lock issues.) */
413 free_page((unsigned long)buffer);
417 static struct file_operations cciss_proc_fops = {
418 .owner = THIS_MODULE,
419 .open = cciss_seq_open,
422 .release = seq_release,
423 .write = cciss_proc_write,
426 static void __devinit cciss_procinit(int i)
428 struct proc_dir_entry *pde;
430 if (proc_cciss == NULL)
431 proc_cciss = proc_mkdir("driver/cciss", NULL);
434 pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP |
436 &cciss_proc_fops, hba[i]);
438 #endif /* CONFIG_PROC_FS */
441 * For operations that cannot sleep, a command block is allocated at init,
442 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
443 * which ones are free or in use. For operations that can wait for kmalloc
444 * to possible sleep, this routine can be called with get_from_pool set to 0.
445 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
447 static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool)
449 CommandList_struct *c;
452 dma_addr_t cmd_dma_handle, err_dma_handle;
454 if (!get_from_pool) {
455 c = (CommandList_struct *) pci_alloc_consistent(h->pdev,
456 sizeof(CommandList_struct), &cmd_dma_handle);
459 memset(c, 0, sizeof(CommandList_struct));
463 c->err_info = (ErrorInfo_struct *)
464 pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct),
467 if (c->err_info == NULL) {
468 pci_free_consistent(h->pdev,
469 sizeof(CommandList_struct), c, cmd_dma_handle);
472 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
473 } else { /* get it out of the controllers pool */
476 i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds);
479 } while (test_and_set_bit
480 (i & (BITS_PER_LONG - 1),
481 h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
483 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
486 memset(c, 0, sizeof(CommandList_struct));
487 cmd_dma_handle = h->cmd_pool_dhandle
488 + i * sizeof(CommandList_struct);
489 c->err_info = h->errinfo_pool + i;
490 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
491 err_dma_handle = h->errinfo_pool_dhandle
492 + i * sizeof(ErrorInfo_struct);
498 INIT_HLIST_NODE(&c->list);
499 c->busaddr = (__u32) cmd_dma_handle;
500 temp64.val = (__u64) err_dma_handle;
501 c->ErrDesc.Addr.lower = temp64.val32.lower;
502 c->ErrDesc.Addr.upper = temp64.val32.upper;
503 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
510 * Frees a command block that was previously allocated with cmd_alloc().
512 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
517 if (!got_from_pool) {
518 temp64.val32.lower = c->ErrDesc.Addr.lower;
519 temp64.val32.upper = c->ErrDesc.Addr.upper;
520 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
521 c->err_info, (dma_addr_t) temp64.val);
522 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
523 c, (dma_addr_t) c->busaddr);
526 clear_bit(i & (BITS_PER_LONG - 1),
527 h->cmd_pool_bits + (i / BITS_PER_LONG));
532 static inline ctlr_info_t *get_host(struct gendisk *disk)
534 return disk->queue->queuedata;
537 static inline drive_info_struct *get_drv(struct gendisk *disk)
539 return disk->private_data;
543 * Open. Make sure the device is really there.
545 static int cciss_open(struct block_device *bdev, fmode_t mode)
547 ctlr_info_t *host = get_host(bdev->bd_disk);
548 drive_info_struct *drv = get_drv(bdev->bd_disk);
551 printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name);
552 #endif /* CCISS_DEBUG */
554 if (host->busy_initializing || drv->busy_configuring)
557 * Root is allowed to open raw volume zero even if it's not configured
558 * so array config can still work. Root is also allowed to open any
559 * volume that has a LUN ID, so it can issue IOCTL to reread the
560 * disk information. I don't think I really like this
561 * but I'm already using way to many device nodes to claim another one
562 * for "raw controller".
564 if (drv->heads == 0) {
565 if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */
566 /* if not node 0 make sure it is a partition = 0 */
567 if (MINOR(bdev->bd_dev) & 0x0f) {
569 /* if it is, make sure we have a LUN ID */
570 } else if (drv->LunID == 0) {
574 if (!capable(CAP_SYS_ADMIN))
585 static int cciss_release(struct gendisk *disk, fmode_t mode)
587 ctlr_info_t *host = get_host(disk);
588 drive_info_struct *drv = get_drv(disk);
591 printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name);
592 #endif /* CCISS_DEBUG */
601 static int do_ioctl(struct block_device *bdev, fmode_t mode,
602 unsigned cmd, unsigned long arg)
606 ret = cciss_ioctl(bdev, mode, cmd, arg);
611 static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode,
612 unsigned cmd, unsigned long arg);
613 static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode,
614 unsigned cmd, unsigned long arg);
616 static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode,
617 unsigned cmd, unsigned long arg)
620 case CCISS_GETPCIINFO:
621 case CCISS_GETINTINFO:
622 case CCISS_SETINTINFO:
623 case CCISS_GETNODENAME:
624 case CCISS_SETNODENAME:
625 case CCISS_GETHEARTBEAT:
626 case CCISS_GETBUSTYPES:
627 case CCISS_GETFIRMVER:
628 case CCISS_GETDRIVVER:
629 case CCISS_REVALIDVOLS:
630 case CCISS_DEREGDISK:
631 case CCISS_REGNEWDISK:
633 case CCISS_RESCANDISK:
634 case CCISS_GETLUNINFO:
635 return do_ioctl(bdev, mode, cmd, arg);
637 case CCISS_PASSTHRU32:
638 return cciss_ioctl32_passthru(bdev, mode, cmd, arg);
639 case CCISS_BIG_PASSTHRU32:
640 return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg);
647 static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode,
648 unsigned cmd, unsigned long arg)
650 IOCTL32_Command_struct __user *arg32 =
651 (IOCTL32_Command_struct __user *) arg;
652 IOCTL_Command_struct arg64;
653 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
659 copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
660 sizeof(arg64.LUN_info));
662 copy_from_user(&arg64.Request, &arg32->Request,
663 sizeof(arg64.Request));
665 copy_from_user(&arg64.error_info, &arg32->error_info,
666 sizeof(arg64.error_info));
667 err |= get_user(arg64.buf_size, &arg32->buf_size);
668 err |= get_user(cp, &arg32->buf);
669 arg64.buf = compat_ptr(cp);
670 err |= copy_to_user(p, &arg64, sizeof(arg64));
675 err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p);
679 copy_in_user(&arg32->error_info, &p->error_info,
680 sizeof(arg32->error_info));
686 static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode,
687 unsigned cmd, unsigned long arg)
689 BIG_IOCTL32_Command_struct __user *arg32 =
690 (BIG_IOCTL32_Command_struct __user *) arg;
691 BIG_IOCTL_Command_struct arg64;
692 BIG_IOCTL_Command_struct __user *p =
693 compat_alloc_user_space(sizeof(arg64));
699 copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
700 sizeof(arg64.LUN_info));
702 copy_from_user(&arg64.Request, &arg32->Request,
703 sizeof(arg64.Request));
705 copy_from_user(&arg64.error_info, &arg32->error_info,
706 sizeof(arg64.error_info));
707 err |= get_user(arg64.buf_size, &arg32->buf_size);
708 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
709 err |= get_user(cp, &arg32->buf);
710 arg64.buf = compat_ptr(cp);
711 err |= copy_to_user(p, &arg64, sizeof(arg64));
716 err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p);
720 copy_in_user(&arg32->error_info, &p->error_info,
721 sizeof(arg32->error_info));
728 static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo)
730 drive_info_struct *drv = get_drv(bdev->bd_disk);
735 geo->heads = drv->heads;
736 geo->sectors = drv->sectors;
737 geo->cylinders = drv->cylinders;
741 static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c)
743 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
744 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
745 (void)check_for_unit_attention(host, c);
750 static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
751 unsigned int cmd, unsigned long arg)
753 struct gendisk *disk = bdev->bd_disk;
754 ctlr_info_t *host = get_host(disk);
755 drive_info_struct *drv = get_drv(disk);
756 int ctlr = host->ctlr;
757 void __user *argp = (void __user *)arg;
760 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
761 #endif /* CCISS_DEBUG */
764 case CCISS_GETPCIINFO:
766 cciss_pci_info_struct pciinfo;
770 pciinfo.domain = pci_domain_nr(host->pdev->bus);
771 pciinfo.bus = host->pdev->bus->number;
772 pciinfo.dev_fn = host->pdev->devfn;
773 pciinfo.board_id = host->board_id;
775 (argp, &pciinfo, sizeof(cciss_pci_info_struct)))
779 case CCISS_GETINTINFO:
781 cciss_coalint_struct intinfo;
785 readl(&host->cfgtable->HostWrite.CoalIntDelay);
787 readl(&host->cfgtable->HostWrite.CoalIntCount);
789 (argp, &intinfo, sizeof(cciss_coalint_struct)))
793 case CCISS_SETINTINFO:
795 cciss_coalint_struct intinfo;
801 if (!capable(CAP_SYS_ADMIN))
804 (&intinfo, argp, sizeof(cciss_coalint_struct)))
806 if ((intinfo.delay == 0) && (intinfo.count == 0))
808 // printk("cciss_ioctl: delay and count cannot be 0\n");
811 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
812 /* Update the field, and then ring the doorbell */
813 writel(intinfo.delay,
814 &(host->cfgtable->HostWrite.CoalIntDelay));
815 writel(intinfo.count,
816 &(host->cfgtable->HostWrite.CoalIntCount));
817 writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
819 for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) {
820 if (!(readl(host->vaddr + SA5_DOORBELL)
823 /* delay and try again */
826 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
827 if (i >= MAX_IOCTL_CONFIG_WAIT)
831 case CCISS_GETNODENAME:
833 NodeName_type NodeName;
838 for (i = 0; i < 16; i++)
840 readb(&host->cfgtable->ServerName[i]);
841 if (copy_to_user(argp, NodeName, sizeof(NodeName_type)))
845 case CCISS_SETNODENAME:
847 NodeName_type NodeName;
853 if (!capable(CAP_SYS_ADMIN))
857 (NodeName, argp, sizeof(NodeName_type)))
860 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
862 /* Update the field, and then ring the doorbell */
863 for (i = 0; i < 16; i++)
865 &host->cfgtable->ServerName[i]);
867 writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
869 for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) {
870 if (!(readl(host->vaddr + SA5_DOORBELL)
873 /* delay and try again */
876 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
877 if (i >= MAX_IOCTL_CONFIG_WAIT)
882 case CCISS_GETHEARTBEAT:
884 Heartbeat_type heartbeat;
888 heartbeat = readl(&host->cfgtable->HeartBeat);
890 (argp, &heartbeat, sizeof(Heartbeat_type)))
894 case CCISS_GETBUSTYPES:
896 BusTypes_type BusTypes;
900 BusTypes = readl(&host->cfgtable->BusTypes);
902 (argp, &BusTypes, sizeof(BusTypes_type)))
906 case CCISS_GETFIRMVER:
908 FirmwareVer_type firmware;
912 memcpy(firmware, host->firm_ver, 4);
915 (argp, firmware, sizeof(FirmwareVer_type)))
919 case CCISS_GETDRIVVER:
921 DriverVer_type DriverVer = DRIVER_VERSION;
927 (argp, &DriverVer, sizeof(DriverVer_type)))
932 case CCISS_DEREGDISK:
934 case CCISS_REVALIDVOLS:
935 return rebuild_lun_table(host, 0);
937 case CCISS_GETLUNINFO:{
938 LogvolInfo_struct luninfo;
940 luninfo.LunID = drv->LunID;
941 luninfo.num_opens = drv->usage_count;
942 luninfo.num_parts = 0;
943 if (copy_to_user(argp, &luninfo,
944 sizeof(LogvolInfo_struct)))
950 IOCTL_Command_struct iocommand;
951 CommandList_struct *c;
955 DECLARE_COMPLETION_ONSTACK(wait);
960 if (!capable(CAP_SYS_RAWIO))
964 (&iocommand, argp, sizeof(IOCTL_Command_struct)))
966 if ((iocommand.buf_size < 1) &&
967 (iocommand.Request.Type.Direction != XFER_NONE)) {
970 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
971 /* Check kmalloc limits */
972 if (iocommand.buf_size > 128000)
975 if (iocommand.buf_size > 0) {
976 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
980 if (iocommand.Request.Type.Direction == XFER_WRITE) {
981 /* Copy the data into the buffer we created */
983 (buff, iocommand.buf, iocommand.buf_size)) {
988 memset(buff, 0, iocommand.buf_size);
990 if ((c = cmd_alloc(host, 0)) == NULL) {
994 // Fill in the command type
995 c->cmd_type = CMD_IOCTL_PEND;
996 // Fill in Command Header
997 c->Header.ReplyQueue = 0; // unused in simple mode
998 if (iocommand.buf_size > 0) // buffer to fill
1000 c->Header.SGList = 1;
1001 c->Header.SGTotal = 1;
1002 } else // no buffers to fill
1004 c->Header.SGList = 0;
1005 c->Header.SGTotal = 0;
1007 c->Header.LUN = iocommand.LUN_info;
1008 c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
1010 // Fill in Request block
1011 c->Request = iocommand.Request;
1013 // Fill in the scatter gather information
1014 if (iocommand.buf_size > 0) {
1015 temp64.val = pci_map_single(host->pdev, buff,
1017 PCI_DMA_BIDIRECTIONAL);
1018 c->SG[0].Addr.lower = temp64.val32.lower;
1019 c->SG[0].Addr.upper = temp64.val32.upper;
1020 c->SG[0].Len = iocommand.buf_size;
1021 c->SG[0].Ext = 0; // we are not chaining
1025 /* Put the request on the tail of the request queue */
1026 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1027 addQ(&host->reqQ, c);
1030 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1032 wait_for_completion(&wait);
1034 /* unlock the buffers from DMA */
1035 temp64.val32.lower = c->SG[0].Addr.lower;
1036 temp64.val32.upper = c->SG[0].Addr.upper;
1037 pci_unmap_single(host->pdev, (dma_addr_t) temp64.val,
1039 PCI_DMA_BIDIRECTIONAL);
1041 check_ioctl_unit_attention(host, c);
1043 /* Copy the error information out */
1044 iocommand.error_info = *(c->err_info);
1046 (argp, &iocommand, sizeof(IOCTL_Command_struct))) {
1048 cmd_free(host, c, 0);
1052 if (iocommand.Request.Type.Direction == XFER_READ) {
1053 /* Copy the data out of the buffer we created */
1055 (iocommand.buf, buff, iocommand.buf_size)) {
1057 cmd_free(host, c, 0);
1062 cmd_free(host, c, 0);
1065 case CCISS_BIG_PASSTHRU:{
1066 BIG_IOCTL_Command_struct *ioc;
1067 CommandList_struct *c;
1068 unsigned char **buff = NULL;
1069 int *buff_size = NULL;
1071 unsigned long flags;
1075 DECLARE_COMPLETION_ONSTACK(wait);
1078 BYTE __user *data_ptr;
1082 if (!capable(CAP_SYS_RAWIO))
1084 ioc = (BIG_IOCTL_Command_struct *)
1085 kmalloc(sizeof(*ioc), GFP_KERNEL);
1090 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
1094 if ((ioc->buf_size < 1) &&
1095 (ioc->Request.Type.Direction != XFER_NONE)) {
1099 /* Check kmalloc limits using all SGs */
1100 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
1104 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
1109 kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL);
1114 buff_size = kmalloc(MAXSGENTRIES * sizeof(int),
1120 left = ioc->buf_size;
1121 data_ptr = ioc->buf;
1124 ioc->malloc_size) ? ioc->
1126 buff_size[sg_used] = sz;
1127 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
1128 if (buff[sg_used] == NULL) {
1132 if (ioc->Request.Type.Direction == XFER_WRITE) {
1134 (buff[sg_used], data_ptr, sz)) {
1139 memset(buff[sg_used], 0, sz);
1145 if ((c = cmd_alloc(host, 0)) == NULL) {
1149 c->cmd_type = CMD_IOCTL_PEND;
1150 c->Header.ReplyQueue = 0;
1152 if (ioc->buf_size > 0) {
1153 c->Header.SGList = sg_used;
1154 c->Header.SGTotal = sg_used;
1156 c->Header.SGList = 0;
1157 c->Header.SGTotal = 0;
1159 c->Header.LUN = ioc->LUN_info;
1160 c->Header.Tag.lower = c->busaddr;
1162 c->Request = ioc->Request;
1163 if (ioc->buf_size > 0) {
1165 for (i = 0; i < sg_used; i++) {
1167 pci_map_single(host->pdev, buff[i],
1169 PCI_DMA_BIDIRECTIONAL);
1170 c->SG[i].Addr.lower =
1172 c->SG[i].Addr.upper =
1174 c->SG[i].Len = buff_size[i];
1175 c->SG[i].Ext = 0; /* we are not chaining */
1179 /* Put the request on the tail of the request queue */
1180 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1181 addQ(&host->reqQ, c);
1184 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1185 wait_for_completion(&wait);
1186 /* unlock the buffers from DMA */
1187 for (i = 0; i < sg_used; i++) {
1188 temp64.val32.lower = c->SG[i].Addr.lower;
1189 temp64.val32.upper = c->SG[i].Addr.upper;
1190 pci_unmap_single(host->pdev,
1191 (dma_addr_t) temp64.val, buff_size[i],
1192 PCI_DMA_BIDIRECTIONAL);
1194 check_ioctl_unit_attention(host, c);
1195 /* Copy the error information out */
1196 ioc->error_info = *(c->err_info);
1197 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1198 cmd_free(host, c, 0);
1202 if (ioc->Request.Type.Direction == XFER_READ) {
1203 /* Copy the data out of the buffer we created */
1204 BYTE __user *ptr = ioc->buf;
1205 for (i = 0; i < sg_used; i++) {
1207 (ptr, buff[i], buff_size[i])) {
1208 cmd_free(host, c, 0);
1212 ptr += buff_size[i];
1215 cmd_free(host, c, 0);
1219 for (i = 0; i < sg_used; i++)
1228 /* scsi_cmd_ioctl handles these, below, though some are not */
1229 /* very meaningful for cciss. SG_IO is the main one people want. */
1231 case SG_GET_VERSION_NUM:
1232 case SG_SET_TIMEOUT:
1233 case SG_GET_TIMEOUT:
1234 case SG_GET_RESERVED_SIZE:
1235 case SG_SET_RESERVED_SIZE:
1236 case SG_EMULATED_HOST:
1238 case SCSI_IOCTL_SEND_COMMAND:
1239 return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp);
1241 /* scsi_cmd_ioctl would normally handle these, below, but */
1242 /* they aren't a good fit for cciss, as CD-ROMs are */
1243 /* not supported, and we don't have any bus/target/lun */
1244 /* which we present to the kernel. */
1246 case CDROM_SEND_PACKET:
1247 case CDROMCLOSETRAY:
1249 case SCSI_IOCTL_GET_IDLUN:
1250 case SCSI_IOCTL_GET_BUS_NUMBER:
1256 static void cciss_check_queues(ctlr_info_t *h)
1258 int start_queue = h->next_to_run;
1261 /* check to see if we have maxed out the number of commands that can
1262 * be placed on the queue. If so then exit. We do this check here
1263 * in case the interrupt we serviced was from an ioctl and did not
1264 * free any new commands.
1266 if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds)
1269 /* We have room on the queue for more commands. Now we need to queue
1270 * them up. We will also keep track of the next queue to run so
1271 * that every queue gets a chance to be started first.
1273 for (i = 0; i < h->highest_lun + 1; i++) {
1274 int curr_queue = (start_queue + i) % (h->highest_lun + 1);
1275 /* make sure the disk has been added and the drive is real
1276 * because this can be called from the middle of init_one.
1278 if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads))
1280 blk_start_queue(h->gendisk[curr_queue]->queue);
1282 /* check to see if we have maxed out the number of commands
1283 * that can be placed on the queue.
1285 if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) {
1286 if (curr_queue == start_queue) {
1288 (start_queue + 1) % (h->highest_lun + 1);
1291 h->next_to_run = curr_queue;
1298 static void cciss_softirq_done(struct request *rq)
1300 CommandList_struct *cmd = rq->completion_data;
1301 ctlr_info_t *h = hba[cmd->ctlr];
1302 unsigned long flags;
1306 if (cmd->Request.Type.Direction == XFER_READ)
1307 ddir = PCI_DMA_FROMDEVICE;
1309 ddir = PCI_DMA_TODEVICE;
1311 /* command did not need to be retried */
1312 /* unmap the DMA mapping for all the scatter gather elements */
1313 for (i = 0; i < cmd->Header.SGList; i++) {
1314 temp64.val32.lower = cmd->SG[i].Addr.lower;
1315 temp64.val32.upper = cmd->SG[i].Addr.upper;
1316 pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir);
1320 printk("Done with %p\n", rq);
1321 #endif /* CCISS_DEBUG */
1323 /* set the residual count for pc requests */
1324 if (blk_pc_request(rq))
1325 rq->resid_len = cmd->err_info->ResidualCnt;
1327 blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO);
1329 spin_lock_irqsave(&h->lock, flags);
1330 cmd_free(h, cmd, 1);
1331 cciss_check_queues(h);
1332 spin_unlock_irqrestore(&h->lock, flags);
1335 /* This function gets the serial number of a logical drive via
1336 * inquiry page 0x83. Serial no. is 16 bytes. If the serial
1337 * number cannot be had, for whatever reason, 16 bytes of 0xff
1338 * are returned instead.
1340 static void cciss_get_serial_no(int ctlr, int logvol, int withirq,
1341 unsigned char *serial_no, int buflen)
1343 #define PAGE_83_INQ_BYTES 64
1349 memset(serial_no, 0xff, buflen);
1350 buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL);
1353 memset(serial_no, 0, buflen);
1355 rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf,
1356 PAGE_83_INQ_BYTES, 1, logvol, 0x83, TYPE_CMD);
1358 rc = sendcmd(CISS_INQUIRY, ctlr, buf,
1359 PAGE_83_INQ_BYTES, 1, logvol, 0x83, NULL, TYPE_CMD);
1361 memcpy(serial_no, &buf[8], buflen);
1366 static void cciss_add_disk(ctlr_info_t *h, struct gendisk *disk,
1369 disk->queue = blk_init_queue(do_cciss_request, &h->lock);
1370 sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index);
1371 disk->major = h->major;
1372 disk->first_minor = drv_index << NWD_SHIFT;
1373 disk->fops = &cciss_fops;
1374 disk->private_data = &h->drv[drv_index];
1375 disk->driverfs_dev = &h->pdev->dev;
1377 /* Set up queue information */
1378 blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask);
1380 /* This is a hardware imposed limit. */
1381 blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES);
1383 /* This is a limit in the driver and could be eliminated. */
1384 blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES);
1386 blk_queue_max_sectors(disk->queue, h->cciss_max_sectors);
1388 blk_queue_softirq_done(disk->queue, cciss_softirq_done);
1390 disk->queue->queuedata = h;
1392 blk_queue_hardsect_size(disk->queue,
1393 h->drv[drv_index].block_size);
1395 /* Make sure all queue data is written out before */
1396 /* setting h->drv[drv_index].queue, as setting this */
1397 /* allows the interrupt handler to start the queue */
1399 h->drv[drv_index].queue = disk->queue;
1403 /* This function will check the usage_count of the drive to be updated/added.
1404 * If the usage_count is zero and it is a heretofore unknown drive, or,
1405 * the drive's capacity, geometry, or serial number has changed,
1406 * then the drive information will be updated and the disk will be
1407 * re-registered with the kernel. If these conditions don't hold,
1408 * then it will be left alone for the next reboot. The exception to this
1409 * is disk 0 which will always be left registered with the kernel since it
1410 * is also the controller node. Any changes to disk 0 will show up on
1413 static void cciss_update_drive_info(int ctlr, int drv_index, int first_time)
1415 ctlr_info_t *h = hba[ctlr];
1416 struct gendisk *disk;
1417 InquiryData_struct *inq_buff = NULL;
1418 unsigned int block_size;
1419 sector_t total_size;
1420 unsigned long flags = 0;
1422 drive_info_struct *drvinfo;
1423 int was_only_controller_node;
1425 /* Get information about the disk and modify the driver structure */
1426 inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
1427 drvinfo = kmalloc(sizeof(*drvinfo), GFP_KERNEL);
1428 if (inq_buff == NULL || drvinfo == NULL)
1431 /* See if we're trying to update the "controller node"
1432 * this will happen the when the first logical drive gets
1435 was_only_controller_node = (drv_index == 0 &&
1436 h->drv[0].raid_level == -1);
1438 /* testing to see if 16-byte CDBs are already being used */
1439 if (h->cciss_read == CCISS_READ_16) {
1440 cciss_read_capacity_16(h->ctlr, drv_index, 1,
1441 &total_size, &block_size);
1444 cciss_read_capacity(ctlr, drv_index, 1,
1445 &total_size, &block_size);
1447 /* if read_capacity returns all F's this volume is >2TB */
1448 /* in size so we switch to 16-byte CDB's for all */
1449 /* read/write ops */
1450 if (total_size == 0xFFFFFFFFULL) {
1451 cciss_read_capacity_16(ctlr, drv_index, 1,
1452 &total_size, &block_size);
1453 h->cciss_read = CCISS_READ_16;
1454 h->cciss_write = CCISS_WRITE_16;
1456 h->cciss_read = CCISS_READ_10;
1457 h->cciss_write = CCISS_WRITE_10;
1461 cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
1463 drvinfo->block_size = block_size;
1464 drvinfo->nr_blocks = total_size + 1;
1466 cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no,
1467 sizeof(drvinfo->serial_no));
1469 /* Is it the same disk we already know, and nothing's changed? */
1470 if (h->drv[drv_index].raid_level != -1 &&
1471 ((memcmp(drvinfo->serial_no,
1472 h->drv[drv_index].serial_no, 16) == 0) &&
1473 drvinfo->block_size == h->drv[drv_index].block_size &&
1474 drvinfo->nr_blocks == h->drv[drv_index].nr_blocks &&
1475 drvinfo->heads == h->drv[drv_index].heads &&
1476 drvinfo->sectors == h->drv[drv_index].sectors &&
1477 drvinfo->cylinders == h->drv[drv_index].cylinders))
1478 /* The disk is unchanged, nothing to update */
1481 /* If we get here it's not the same disk, or something's changed,
1482 * so we need to * deregister it, and re-register it, if it's not
1484 * If the disk already exists then deregister it before proceeding
1485 * (unless it's the first disk (for the controller node).
1487 if (h->drv[drv_index].raid_level != -1 && drv_index != 0) {
1488 printk(KERN_WARNING "disk %d has changed.\n", drv_index);
1489 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1490 h->drv[drv_index].busy_configuring = 1;
1491 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1493 /* deregister_disk sets h->drv[drv_index].queue = NULL
1494 * which keeps the interrupt handler from starting
1497 ret = deregister_disk(h, drv_index, 0);
1498 h->drv[drv_index].busy_configuring = 0;
1501 /* If the disk is in use return */
1505 /* Save the new information from cciss_geometry_inquiry
1506 * and serial number inquiry.
1508 h->drv[drv_index].block_size = drvinfo->block_size;
1509 h->drv[drv_index].nr_blocks = drvinfo->nr_blocks;
1510 h->drv[drv_index].heads = drvinfo->heads;
1511 h->drv[drv_index].sectors = drvinfo->sectors;
1512 h->drv[drv_index].cylinders = drvinfo->cylinders;
1513 h->drv[drv_index].raid_level = drvinfo->raid_level;
1514 memcpy(h->drv[drv_index].serial_no, drvinfo->serial_no, 16);
1517 disk = h->gendisk[drv_index];
1518 set_capacity(disk, h->drv[drv_index].nr_blocks);
1520 /* If it's not disk 0 (drv_index != 0)
1521 * or if it was disk 0, but there was previously
1522 * no actual corresponding configured logical drive
1523 * (raid_leve == -1) then we want to update the
1524 * logical drive's information.
1526 if (drv_index || first_time)
1527 cciss_add_disk(h, disk, drv_index);
1534 printk(KERN_ERR "cciss: out of memory\n");
1538 /* This function will find the first index of the controllers drive array
1539 * that has a -1 for the raid_level and will return that index. This is
1540 * where new drives will be added. If the index to be returned is greater
1541 * than the highest_lun index for the controller then highest_lun is set
1542 * to this new index. If there are no available indexes then -1 is returned.
1543 * "controller_node" is used to know if this is a real logical drive, or just
1544 * the controller node, which determines if this counts towards highest_lun.
1546 static int cciss_find_free_drive_index(int ctlr, int controller_node)
1550 for (i = 0; i < CISS_MAX_LUN; i++) {
1551 if (hba[ctlr]->drv[i].raid_level == -1) {
1552 if (i > hba[ctlr]->highest_lun)
1553 if (!controller_node)
1554 hba[ctlr]->highest_lun = i;
1561 /* cciss_add_gendisk finds a free hba[]->drv structure
1562 * and allocates a gendisk if needed, and sets the lunid
1563 * in the drvinfo structure. It returns the index into
1564 * the ->drv[] array, or -1 if none are free.
1565 * is_controller_node indicates whether highest_lun should
1566 * count this disk, or if it's only being added to provide
1567 * a means to talk to the controller in case no logical
1568 * drives have yet been configured.
1570 static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node)
1574 drv_index = cciss_find_free_drive_index(h->ctlr, controller_node);
1575 if (drv_index == -1)
1577 /*Check if the gendisk needs to be allocated */
1578 if (!h->gendisk[drv_index]) {
1579 h->gendisk[drv_index] =
1580 alloc_disk(1 << NWD_SHIFT);
1581 if (!h->gendisk[drv_index]) {
1582 printk(KERN_ERR "cciss%d: could not "
1583 "allocate a new disk %d\n",
1584 h->ctlr, drv_index);
1588 h->drv[drv_index].LunID = lunid;
1590 /* Don't need to mark this busy because nobody */
1591 /* else knows about this disk yet to contend */
1592 /* for access to it. */
1593 h->drv[drv_index].busy_configuring = 0;
1598 /* This is for the special case of a controller which
1599 * has no logical drives. In this case, we still need
1600 * to register a disk so the controller can be accessed
1601 * by the Array Config Utility.
1603 static void cciss_add_controller_node(ctlr_info_t *h)
1605 struct gendisk *disk;
1608 if (h->gendisk[0] != NULL) /* already did this? Then bail. */
1611 drv_index = cciss_add_gendisk(h, 0, 1);
1612 if (drv_index == -1) {
1613 printk(KERN_WARNING "cciss%d: could not "
1614 "add disk 0.\n", h->ctlr);
1617 h->drv[drv_index].block_size = 512;
1618 h->drv[drv_index].nr_blocks = 0;
1619 h->drv[drv_index].heads = 0;
1620 h->drv[drv_index].sectors = 0;
1621 h->drv[drv_index].cylinders = 0;
1622 h->drv[drv_index].raid_level = -1;
1623 memset(h->drv[drv_index].serial_no, 0, 16);
1624 disk = h->gendisk[drv_index];
1625 cciss_add_disk(h, disk, drv_index);
1628 /* This function will add and remove logical drives from the Logical
1629 * drive array of the controller and maintain persistency of ordering
1630 * so that mount points are preserved until the next reboot. This allows
1631 * for the removal of logical drives in the middle of the drive array
1632 * without a re-ordering of those drives.
1634 * h = The controller to perform the operations on
1636 static int rebuild_lun_table(ctlr_info_t *h, int first_time)
1640 ReportLunData_struct *ld_buff = NULL;
1647 unsigned long flags;
1649 if (!capable(CAP_SYS_RAWIO))
1652 /* Set busy_configuring flag for this operation */
1653 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1654 if (h->busy_configuring) {
1655 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1658 h->busy_configuring = 1;
1659 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1661 ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1662 if (ld_buff == NULL)
1665 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1666 sizeof(ReportLunData_struct), 0,
1669 if (return_code == IO_OK)
1670 listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength);
1671 else { /* reading number of logical volumes failed */
1672 printk(KERN_WARNING "cciss: report logical volume"
1673 " command failed\n");
1678 num_luns = listlength / 8; /* 8 bytes per entry */
1679 if (num_luns > CISS_MAX_LUN) {
1680 num_luns = CISS_MAX_LUN;
1681 printk(KERN_WARNING "cciss: more luns configured"
1682 " on controller than can be handled by"
1687 cciss_add_controller_node(h);
1689 /* Compare controller drive array to driver's drive array
1690 * to see if any drives are missing on the controller due
1691 * to action of Array Config Utility (user deletes drive)
1692 * and deregister logical drives which have disappeared.
1694 for (i = 0; i <= h->highest_lun; i++) {
1698 /* skip holes in the array from already deleted drives */
1699 if (h->drv[i].raid_level == -1)
1702 for (j = 0; j < num_luns; j++) {
1703 memcpy(&lunid, &ld_buff->LUN[j][0], 4);
1704 lunid = le32_to_cpu(lunid);
1705 if (h->drv[i].LunID == lunid) {
1711 /* Deregister it from the OS, it's gone. */
1712 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1713 h->drv[i].busy_configuring = 1;
1714 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1715 return_code = deregister_disk(h, i, 1);
1716 h->drv[i].busy_configuring = 0;
1720 /* Compare controller drive array to driver's drive array.
1721 * Check for updates in the drive information and any new drives
1722 * on the controller due to ACU adding logical drives, or changing
1723 * a logical drive's size, etc. Reregister any new/changed drives
1725 for (i = 0; i < num_luns; i++) {
1730 memcpy(&lunid, &ld_buff->LUN[i][0], 4);
1731 lunid = le32_to_cpu(lunid);
1733 /* Find if the LUN is already in the drive array
1734 * of the driver. If so then update its info
1735 * if not in use. If it does not exist then find
1736 * the first free index and add it.
1738 for (j = 0; j <= h->highest_lun; j++) {
1739 if (h->drv[j].raid_level != -1 &&
1740 h->drv[j].LunID == lunid) {
1747 /* check if the drive was found already in the array */
1749 drv_index = cciss_add_gendisk(h, lunid, 0);
1750 if (drv_index == -1)
1753 cciss_update_drive_info(ctlr, drv_index, first_time);
1758 h->busy_configuring = 0;
1759 /* We return -1 here to tell the ACU that we have registered/updated
1760 * all of the drives that we can and to keep it from calling us
1765 printk(KERN_ERR "cciss: out of memory\n");
1766 h->busy_configuring = 0;
1770 /* This function will deregister the disk and it's queue from the
1771 * kernel. It must be called with the controller lock held and the
1772 * drv structures busy_configuring flag set. It's parameters are:
1774 * disk = This is the disk to be deregistered
1775 * drv = This is the drive_info_struct associated with the disk to be
1776 * deregistered. It contains information about the disk used
1778 * clear_all = This flag determines whether or not the disk information
1779 * is going to be completely cleared out and the highest_lun
1780 * reset. Sometimes we want to clear out information about
1781 * the disk in preparation for re-adding it. In this case
1782 * the highest_lun should be left unchanged and the LunID
1783 * should not be cleared.
1785 static int deregister_disk(ctlr_info_t *h, int drv_index,
1789 struct gendisk *disk;
1790 drive_info_struct *drv;
1792 if (!capable(CAP_SYS_RAWIO))
1795 drv = &h->drv[drv_index];
1796 disk = h->gendisk[drv_index];
1798 /* make sure logical volume is NOT is use */
1799 if (clear_all || (h->gendisk[0] == disk)) {
1800 if (drv->usage_count > 1)
1802 } else if (drv->usage_count > 0)
1805 /* invalidate the devices and deregister the disk. If it is disk
1806 * zero do not deregister it but just zero out it's values. This
1807 * allows us to delete disk zero but keep the controller registered.
1809 if (h->gendisk[0] != disk) {
1810 struct request_queue *q = disk->queue;
1811 if (disk->flags & GENHD_FL_UP)
1814 blk_cleanup_queue(q);
1815 /* Set drv->queue to NULL so that we do not try
1816 * to call blk_start_queue on this queue in the
1821 /* If clear_all is set then we are deleting the logical
1822 * drive, not just refreshing its info. For drives
1823 * other than disk 0 we will call put_disk. We do not
1824 * do this for disk 0 as we need it to be able to
1825 * configure the controller.
1828 /* This isn't pretty, but we need to find the
1829 * disk in our array and NULL our the pointer.
1830 * This is so that we will call alloc_disk if
1831 * this index is used again later.
1833 for (i=0; i < CISS_MAX_LUN; i++){
1834 if (h->gendisk[i] == disk) {
1835 h->gendisk[i] = NULL;
1842 set_capacity(disk, 0);
1846 /* zero out the disk size info */
1848 drv->block_size = 0;
1852 drv->raid_level = -1; /* This can be used as a flag variable to
1853 * indicate that this element of the drive
1858 /* check to see if it was the last disk */
1859 if (drv == h->drv + h->highest_lun) {
1860 /* if so, find the new hightest lun */
1861 int i, newhighest = -1;
1862 for (i = 0; i <= h->highest_lun; i++) {
1863 /* if the disk has size > 0, it is available */
1864 if (h->drv[i].heads)
1867 h->highest_lun = newhighest;
1875 static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller,
1876 1: address logical volume log_unit,
1877 2: periph device address is scsi3addr */
1878 unsigned int log_unit, __u8 page_code,
1879 unsigned char *scsi3addr, int cmd_type)
1881 ctlr_info_t *h = hba[ctlr];
1882 u64bit buff_dma_handle;
1885 c->cmd_type = CMD_IOCTL_PEND;
1886 c->Header.ReplyQueue = 0;
1888 c->Header.SGList = 1;
1889 c->Header.SGTotal = 1;
1891 c->Header.SGList = 0;
1892 c->Header.SGTotal = 0;
1894 c->Header.Tag.lower = c->busaddr;
1896 c->Request.Type.Type = cmd_type;
1897 if (cmd_type == TYPE_CMD) {
1900 /* If the logical unit number is 0 then, this is going
1901 to controller so It's a physical command
1902 mode = 0 target = 0. So we have nothing to write.
1903 otherwise, if use_unit_num == 1,
1904 mode = 1(volume set addressing) target = LUNID
1905 otherwise, if use_unit_num == 2,
1906 mode = 0(periph dev addr) target = scsi3addr */
1907 if (use_unit_num == 1) {
1908 c->Header.LUN.LogDev.VolId =
1909 h->drv[log_unit].LunID;
1910 c->Header.LUN.LogDev.Mode = 1;
1911 } else if (use_unit_num == 2) {
1912 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr,
1914 c->Header.LUN.LogDev.Mode = 0;
1916 /* are we trying to read a vital product page */
1917 if (page_code != 0) {
1918 c->Request.CDB[1] = 0x01;
1919 c->Request.CDB[2] = page_code;
1921 c->Request.CDBLen = 6;
1922 c->Request.Type.Attribute = ATTR_SIMPLE;
1923 c->Request.Type.Direction = XFER_READ;
1924 c->Request.Timeout = 0;
1925 c->Request.CDB[0] = CISS_INQUIRY;
1926 c->Request.CDB[4] = size & 0xFF;
1928 case CISS_REPORT_LOG:
1929 case CISS_REPORT_PHYS:
1930 /* Talking to controller so It's a physical command
1931 mode = 00 target = 0. Nothing to write.
1933 c->Request.CDBLen = 12;
1934 c->Request.Type.Attribute = ATTR_SIMPLE;
1935 c->Request.Type.Direction = XFER_READ;
1936 c->Request.Timeout = 0;
1937 c->Request.CDB[0] = cmd;
1938 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1939 c->Request.CDB[7] = (size >> 16) & 0xFF;
1940 c->Request.CDB[8] = (size >> 8) & 0xFF;
1941 c->Request.CDB[9] = size & 0xFF;
1944 case CCISS_READ_CAPACITY:
1945 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1946 c->Header.LUN.LogDev.Mode = 1;
1947 c->Request.CDBLen = 10;
1948 c->Request.Type.Attribute = ATTR_SIMPLE;
1949 c->Request.Type.Direction = XFER_READ;
1950 c->Request.Timeout = 0;
1951 c->Request.CDB[0] = cmd;
1953 case CCISS_READ_CAPACITY_16:
1954 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1955 c->Header.LUN.LogDev.Mode = 1;
1956 c->Request.CDBLen = 16;
1957 c->Request.Type.Attribute = ATTR_SIMPLE;
1958 c->Request.Type.Direction = XFER_READ;
1959 c->Request.Timeout = 0;
1960 c->Request.CDB[0] = cmd;
1961 c->Request.CDB[1] = 0x10;
1962 c->Request.CDB[10] = (size >> 24) & 0xFF;
1963 c->Request.CDB[11] = (size >> 16) & 0xFF;
1964 c->Request.CDB[12] = (size >> 8) & 0xFF;
1965 c->Request.CDB[13] = size & 0xFF;
1966 c->Request.Timeout = 0;
1967 c->Request.CDB[0] = cmd;
1969 case CCISS_CACHE_FLUSH:
1970 c->Request.CDBLen = 12;
1971 c->Request.Type.Attribute = ATTR_SIMPLE;
1972 c->Request.Type.Direction = XFER_WRITE;
1973 c->Request.Timeout = 0;
1974 c->Request.CDB[0] = BMIC_WRITE;
1975 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1979 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
1982 } else if (cmd_type == TYPE_MSG) {
1984 case 0: /* ABORT message */
1985 c->Request.CDBLen = 12;
1986 c->Request.Type.Attribute = ATTR_SIMPLE;
1987 c->Request.Type.Direction = XFER_WRITE;
1988 c->Request.Timeout = 0;
1989 c->Request.CDB[0] = cmd; /* abort */
1990 c->Request.CDB[1] = 0; /* abort a command */
1991 /* buff contains the tag of the command to abort */
1992 memcpy(&c->Request.CDB[4], buff, 8);
1994 case 1: /* RESET message */
1995 c->Request.CDBLen = 12;
1996 c->Request.Type.Attribute = ATTR_SIMPLE;
1997 c->Request.Type.Direction = XFER_WRITE;
1998 c->Request.Timeout = 0;
1999 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
2000 c->Request.CDB[0] = cmd; /* reset */
2001 c->Request.CDB[1] = 0x04; /* reset a LUN */
2003 case 3: /* No-Op message */
2004 c->Request.CDBLen = 1;
2005 c->Request.Type.Attribute = ATTR_SIMPLE;
2006 c->Request.Type.Direction = XFER_WRITE;
2007 c->Request.Timeout = 0;
2008 c->Request.CDB[0] = cmd;
2012 "cciss%d: unknown message type %d\n", ctlr, cmd);
2017 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
2020 /* Fill in the scatter gather information */
2022 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
2024 PCI_DMA_BIDIRECTIONAL);
2025 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
2026 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
2027 c->SG[0].Len = size;
2028 c->SG[0].Ext = 0; /* we are not chaining */
2033 static int sendcmd_withirq(__u8 cmd,
2037 unsigned int use_unit_num,
2038 unsigned int log_unit, __u8 page_code, int cmd_type)
2040 ctlr_info_t *h = hba[ctlr];
2041 CommandList_struct *c;
2042 u64bit buff_dma_handle;
2043 unsigned long flags;
2045 DECLARE_COMPLETION_ONSTACK(wait);
2047 if ((c = cmd_alloc(h, 0)) == NULL)
2049 return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
2050 log_unit, page_code, NULL, cmd_type);
2051 if (return_status != IO_OK) {
2053 return return_status;
2058 /* Put the request on the tail of the queue and send it */
2059 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
2063 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
2065 wait_for_completion(&wait);
2067 if (c->err_info->CommandStatus != 0) { /* an error has occurred */
2068 switch (c->err_info->CommandStatus) {
2069 case CMD_TARGET_STATUS:
2070 printk(KERN_WARNING "cciss: cmd %p has "
2071 " completed with errors\n", c);
2072 if (c->err_info->ScsiStatus) {
2073 printk(KERN_WARNING "cciss: cmd %p "
2074 "has SCSI Status = %x\n",
2075 c, c->err_info->ScsiStatus);
2079 case CMD_DATA_UNDERRUN:
2080 case CMD_DATA_OVERRUN:
2081 /* expected for inquire and report lun commands */
2084 printk(KERN_WARNING "cciss: Cmd %p is "
2085 "reported invalid\n", c);
2086 return_status = IO_ERROR;
2088 case CMD_PROTOCOL_ERR:
2089 printk(KERN_WARNING "cciss: cmd %p has "
2090 "protocol error \n", c);
2091 return_status = IO_ERROR;
2093 case CMD_HARDWARE_ERR:
2094 printk(KERN_WARNING "cciss: cmd %p had "
2095 " hardware error\n", c);
2096 return_status = IO_ERROR;
2098 case CMD_CONNECTION_LOST:
2099 printk(KERN_WARNING "cciss: cmd %p had "
2100 "connection lost\n", c);
2101 return_status = IO_ERROR;
2104 printk(KERN_WARNING "cciss: cmd %p was "
2106 return_status = IO_ERROR;
2108 case CMD_ABORT_FAILED:
2109 printk(KERN_WARNING "cciss: cmd %p reports "
2110 "abort failed\n", c);
2111 return_status = IO_ERROR;
2113 case CMD_UNSOLICITED_ABORT:
2115 "cciss%d: unsolicited abort %p\n", ctlr, c);
2116 if (c->retry_count < MAX_CMD_RETRIES) {
2118 "cciss%d: retrying %p\n", ctlr, c);
2120 /* erase the old error information */
2121 memset(c->err_info, 0,
2122 sizeof(ErrorInfo_struct));
2123 return_status = IO_OK;
2124 INIT_COMPLETION(wait);
2127 return_status = IO_ERROR;
2130 printk(KERN_WARNING "cciss: cmd %p returned "
2131 "unknown status %x\n", c,
2132 c->err_info->CommandStatus);
2133 return_status = IO_ERROR;
2136 /* unlock the buffers from DMA */
2137 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
2138 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
2139 pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val,
2140 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
2142 return return_status;
2145 static void cciss_geometry_inquiry(int ctlr, int logvol,
2146 int withirq, sector_t total_size,
2147 unsigned int block_size,
2148 InquiryData_struct *inq_buff,
2149 drive_info_struct *drv)
2154 memset(inq_buff, 0, sizeof(InquiryData_struct));
2156 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
2157 inq_buff, sizeof(*inq_buff), 1,
2158 logvol, 0xC1, TYPE_CMD);
2160 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
2161 sizeof(*inq_buff), 1, logvol, 0xC1, NULL,
2163 if (return_code == IO_OK) {
2164 if (inq_buff->data_byte[8] == 0xFF) {
2166 "cciss: reading geometry failed, volume "
2167 "does not support reading geometry\n");
2169 drv->sectors = 32; // Sectors per track
2170 drv->cylinders = total_size + 1;
2171 drv->raid_level = RAID_UNKNOWN;
2173 drv->heads = inq_buff->data_byte[6];
2174 drv->sectors = inq_buff->data_byte[7];
2175 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
2176 drv->cylinders += inq_buff->data_byte[5];
2177 drv->raid_level = inq_buff->data_byte[8];
2179 drv->block_size = block_size;
2180 drv->nr_blocks = total_size + 1;
2181 t = drv->heads * drv->sectors;
2183 sector_t real_size = total_size + 1;
2184 unsigned long rem = sector_div(real_size, t);
2187 drv->cylinders = real_size;
2189 } else { /* Get geometry failed */
2190 printk(KERN_WARNING "cciss: reading geometry failed\n");
2192 printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n",
2193 drv->heads, drv->sectors, drv->cylinders);
2197 cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size,
2198 unsigned int *block_size)
2200 ReadCapdata_struct *buf;
2203 buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
2205 printk(KERN_WARNING "cciss: out of memory\n");
2210 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
2211 ctlr, buf, sizeof(ReadCapdata_struct),
2212 1, logvol, 0, TYPE_CMD);
2214 return_code = sendcmd(CCISS_READ_CAPACITY,
2215 ctlr, buf, sizeof(ReadCapdata_struct),
2216 1, logvol, 0, NULL, TYPE_CMD);
2217 if (return_code == IO_OK) {
2218 *total_size = be32_to_cpu(*(__be32 *) buf->total_size);
2219 *block_size = be32_to_cpu(*(__be32 *) buf->block_size);
2220 } else { /* read capacity command failed */
2221 printk(KERN_WARNING "cciss: read capacity failed\n");
2223 *block_size = BLOCK_SIZE;
2225 if (*total_size != 0)
2226 printk(KERN_INFO " blocks= %llu block_size= %d\n",
2227 (unsigned long long)*total_size+1, *block_size);
2232 cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size)
2234 ReadCapdata_struct_16 *buf;
2237 buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL);
2239 printk(KERN_WARNING "cciss: out of memory\n");
2244 return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16,
2245 ctlr, buf, sizeof(ReadCapdata_struct_16),
2246 1, logvol, 0, TYPE_CMD);
2249 return_code = sendcmd(CCISS_READ_CAPACITY_16,
2250 ctlr, buf, sizeof(ReadCapdata_struct_16),
2251 1, logvol, 0, NULL, TYPE_CMD);
2253 if (return_code == IO_OK) {
2254 *total_size = be64_to_cpu(*(__be64 *) buf->total_size);
2255 *block_size = be32_to_cpu(*(__be32 *) buf->block_size);
2256 } else { /* read capacity command failed */
2257 printk(KERN_WARNING "cciss: read capacity failed\n");
2259 *block_size = BLOCK_SIZE;
2261 printk(KERN_INFO " blocks= %llu block_size= %d\n",
2262 (unsigned long long)*total_size+1, *block_size);
2266 static int cciss_revalidate(struct gendisk *disk)
2268 ctlr_info_t *h = get_host(disk);
2269 drive_info_struct *drv = get_drv(disk);
2272 unsigned int block_size;
2273 sector_t total_size;
2274 InquiryData_struct *inq_buff = NULL;
2276 for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) {
2277 if (h->drv[logvol].LunID == drv->LunID) {
2286 inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
2287 if (inq_buff == NULL) {
2288 printk(KERN_WARNING "cciss: out of memory\n");
2291 if (h->cciss_read == CCISS_READ_10) {
2292 cciss_read_capacity(h->ctlr, logvol, 1,
2293 &total_size, &block_size);
2295 cciss_read_capacity_16(h->ctlr, logvol, 1,
2296 &total_size, &block_size);
2298 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size,
2301 blk_queue_hardsect_size(drv->queue, drv->block_size);
2302 set_capacity(disk, drv->nr_blocks);
2309 * Wait polling for a command to complete.
2310 * The memory mapped FIFO is polled for the completion.
2311 * Used only at init time, interrupts from the HBA are disabled.
2313 static unsigned long pollcomplete(int ctlr)
2318 /* Wait (up to 20 seconds) for a command to complete */
2320 for (i = 20 * HZ; i > 0; i--) {
2321 done = hba[ctlr]->access.command_completed(hba[ctlr]);
2322 if (done == FIFO_EMPTY)
2323 schedule_timeout_uninterruptible(1);
2327 /* Invalid address to tell caller we ran out of time */
2331 static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete)
2333 /* We get in here if sendcmd() is polling for completions
2334 and gets some command back that it wasn't expecting --
2335 something other than that which it just sent down.
2336 Ordinarily, that shouldn't happen, but it can happen when
2337 the scsi tape stuff gets into error handling mode, and
2338 starts using sendcmd() to try to abort commands and
2339 reset tape drives. In that case, sendcmd may pick up
2340 completions of commands that were sent to logical drives
2341 through the block i/o system, or cciss ioctls completing, etc.
2342 In that case, we need to save those completions for later
2343 processing by the interrupt handler.
2346 #ifdef CONFIG_CISS_SCSI_TAPE
2347 struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects;
2349 /* If it's not the scsi tape stuff doing error handling, (abort */
2350 /* or reset) then we don't expect anything weird. */
2351 if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) {
2353 printk(KERN_WARNING "cciss cciss%d: SendCmd "
2354 "Invalid command list address returned! (%lx)\n",
2356 /* not much we can do. */
2357 #ifdef CONFIG_CISS_SCSI_TAPE
2361 /* We've sent down an abort or reset, but something else
2363 if (srl->ncompletions >= (hba[ctlr]->nr_cmds + 2)) {
2364 /* Uh oh. No room to save it for later... */
2365 printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, "
2366 "reject list overflow, command lost!\n", ctlr);
2369 /* Save it for later */
2370 srl->complete[srl->ncompletions] = complete;
2371 srl->ncompletions++;
2377 * Send a command to the controller, and wait for it to complete.
2378 * Only used at init time.
2380 static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller,
2381 1: address logical volume log_unit,
2382 2: periph device address is scsi3addr */
2383 unsigned int log_unit,
2384 __u8 page_code, unsigned char *scsi3addr, int cmd_type)
2386 CommandList_struct *c;
2388 unsigned long complete;
2389 ctlr_info_t *info_p = hba[ctlr];
2390 u64bit buff_dma_handle;
2391 int status, done = 0;
2393 if ((c = cmd_alloc(info_p, 1)) == NULL) {
2394 printk(KERN_WARNING "cciss: unable to get memory");
2397 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
2398 log_unit, page_code, scsi3addr, cmd_type);
2399 if (status != IO_OK) {
2400 cmd_free(info_p, c, 1);
2408 printk(KERN_DEBUG "cciss: turning intr off\n");
2409 #endif /* CCISS_DEBUG */
2410 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
2412 /* Make sure there is room in the command FIFO */
2413 /* Actually it should be completely empty at this time */
2414 /* unless we are in here doing error handling for the scsi */
2415 /* tape side of the driver. */
2416 for (i = 200000; i > 0; i--) {
2417 /* if fifo isn't full go */
2418 if (!(info_p->access.fifo_full(info_p))) {
2423 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
2424 " waiting!\n", ctlr);
2429 info_p->access.submit_command(info_p, c);
2432 complete = pollcomplete(ctlr);
2435 printk(KERN_DEBUG "cciss: command completed\n");
2436 #endif /* CCISS_DEBUG */
2438 if (complete == 1) {
2440 "cciss cciss%d: SendCmd Timeout out, "
2441 "No command list address returned!\n", ctlr);
2447 /* This will need to change for direct lookup completions */
2448 if ((complete & CISS_ERROR_BIT)
2449 && (complete & ~CISS_ERROR_BIT) == c->busaddr) {
2450 /* if data overrun or underun on Report command
2453 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
2454 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
2455 (c->Request.CDB[0] == CISS_INQUIRY)) &&
2456 ((c->err_info->CommandStatus ==
2457 CMD_DATA_OVERRUN) ||
2458 (c->err_info->CommandStatus == CMD_DATA_UNDERRUN)
2460 complete = c->busaddr;
2462 if (c->err_info->CommandStatus ==
2463 CMD_UNSOLICITED_ABORT) {
2464 printk(KERN_WARNING "cciss%d: "
2465 "unsolicited abort %p\n",
2467 if (c->retry_count < MAX_CMD_RETRIES) {
2469 "cciss%d: retrying %p\n",
2472 /* erase the old error */
2474 memset(c->err_info, 0,
2476 (ErrorInfo_struct));
2480 "cciss%d: retried %p too "
2481 "many times\n", ctlr, c);
2485 } else if (c->err_info->CommandStatus ==
2488 "cciss%d: command could not be aborted.\n",
2493 printk(KERN_WARNING "ciss ciss%d: sendcmd"
2494 " Error %x \n", ctlr,
2495 c->err_info->CommandStatus);
2496 printk(KERN_WARNING "ciss ciss%d: sendcmd"
2498 " size %x\n num %x value %x\n",
2500 c->err_info->MoreErrInfo.Invalid_Cmd.
2502 c->err_info->MoreErrInfo.Invalid_Cmd.
2504 c->err_info->MoreErrInfo.Invalid_Cmd.
2510 /* This will need changing for direct lookup completions */
2511 if (complete != c->busaddr) {
2512 if (add_sendcmd_reject(cmd, ctlr, complete) != 0) {
2513 BUG(); /* we are pretty much hosed if we get here. */
2521 /* unlock the data buffer from DMA */
2522 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
2523 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
2524 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
2525 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
2526 #ifdef CONFIG_CISS_SCSI_TAPE
2527 /* if we saved some commands for later, process them now. */
2528 if (info_p->scsi_rejects.ncompletions > 0)
2529 do_cciss_intr(0, info_p);
2531 cmd_free(info_p, c, 1);
2536 * Map (physical) PCI mem into (virtual) kernel space
2538 static void __iomem *remap_pci_mem(ulong base, ulong size)
2540 ulong page_base = ((ulong) base) & PAGE_MASK;
2541 ulong page_offs = ((ulong) base) - page_base;
2542 void __iomem *page_remapped = ioremap(page_base, page_offs + size);
2544 return page_remapped ? (page_remapped + page_offs) : NULL;
2548 * Takes jobs of the Q and sends them to the hardware, then puts it on
2549 * the Q to wait for completion.
2551 static void start_io(ctlr_info_t *h)
2553 CommandList_struct *c;
2555 while (!hlist_empty(&h->reqQ)) {
2556 c = hlist_entry(h->reqQ.first, CommandList_struct, list);
2557 /* can't do anything if fifo is full */
2558 if ((h->access.fifo_full(h))) {
2559 printk(KERN_WARNING "cciss: fifo full\n");
2563 /* Get the first entry from the Request Q */
2567 /* Tell the controller execute command */
2568 h->access.submit_command(h, c);
2570 /* Put job onto the completed Q */
2575 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
2576 /* Zeros out the error record and then resends the command back */
2577 /* to the controller */
2578 static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c)
2580 /* erase the old error information */
2581 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
2583 /* add it to software queue and then send it to the controller */
2586 if (h->Qdepth > h->maxQsinceinit)
2587 h->maxQsinceinit = h->Qdepth;
2592 static inline unsigned int make_status_bytes(unsigned int scsi_status_byte,
2593 unsigned int msg_byte, unsigned int host_byte,
2594 unsigned int driver_byte)
2596 /* inverse of macros in scsi.h */
2597 return (scsi_status_byte & 0xff) |
2598 ((msg_byte & 0xff) << 8) |
2599 ((host_byte & 0xff) << 16) |
2600 ((driver_byte & 0xff) << 24);
2603 static inline int evaluate_target_status(ctlr_info_t *h,
2604 CommandList_struct *cmd, int *retry_cmd)
2606 unsigned char sense_key;
2607 unsigned char status_byte, msg_byte, host_byte, driver_byte;
2611 /* If we get in here, it means we got "target status", that is, scsi status */
2612 status_byte = cmd->err_info->ScsiStatus;
2613 driver_byte = DRIVER_OK;
2614 msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */
2616 if (blk_pc_request(cmd->rq))
2617 host_byte = DID_PASSTHROUGH;
2621 error_value = make_status_bytes(status_byte, msg_byte,
2622 host_byte, driver_byte);
2624 if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) {
2625 if (!blk_pc_request(cmd->rq))
2626 printk(KERN_WARNING "cciss: cmd %p "
2627 "has SCSI Status 0x%x\n",
2628 cmd, cmd->err_info->ScsiStatus);
2632 /* check the sense key */
2633 sense_key = 0xf & cmd->err_info->SenseInfo[2];
2634 /* no status or recovered error */
2635 if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq))
2638 if (check_for_unit_attention(h, cmd)) {
2639 *retry_cmd = !blk_pc_request(cmd->rq);
2643 if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */
2644 if (error_value != 0)
2645 printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION"
2646 " sense key = 0x%x\n", cmd, sense_key);
2650 /* SG_IO or similar, copy sense data back */
2651 if (cmd->rq->sense) {
2652 if (cmd->rq->sense_len > cmd->err_info->SenseLen)
2653 cmd->rq->sense_len = cmd->err_info->SenseLen;
2654 memcpy(cmd->rq->sense, cmd->err_info->SenseInfo,
2655 cmd->rq->sense_len);
2657 cmd->rq->sense_len = 0;
2662 /* checks the status of the job and calls complete buffers to mark all
2663 * buffers for the completed job. Note that this function does not need
2664 * to hold the hba/queue lock.
2666 static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
2670 struct request *rq = cmd->rq;
2675 rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT);
2677 if (cmd->err_info->CommandStatus == 0) /* no error has occurred */
2678 goto after_error_processing;
2680 switch (cmd->err_info->CommandStatus) {
2681 case CMD_TARGET_STATUS:
2682 rq->errors = evaluate_target_status(h, cmd, &retry_cmd);
2684 case CMD_DATA_UNDERRUN:
2685 if (blk_fs_request(cmd->rq)) {
2686 printk(KERN_WARNING "cciss: cmd %p has"
2687 " completed with data underrun "
2689 cmd->rq->resid_len = cmd->err_info->ResidualCnt;
2692 case CMD_DATA_OVERRUN:
2693 if (blk_fs_request(cmd->rq))
2694 printk(KERN_WARNING "cciss: cmd %p has"
2695 " completed with data overrun "
2699 printk(KERN_WARNING "cciss: cmd %p is "
2700 "reported invalid\n", cmd);
2701 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2702 cmd->err_info->CommandStatus, DRIVER_OK,
2703 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
2705 case CMD_PROTOCOL_ERR:
2706 printk(KERN_WARNING "cciss: cmd %p has "
2707 "protocol error \n", cmd);
2708 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2709 cmd->err_info->CommandStatus, DRIVER_OK,
2710 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
2712 case CMD_HARDWARE_ERR:
2713 printk(KERN_WARNING "cciss: cmd %p had "
2714 " hardware error\n", cmd);
2715 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2716 cmd->err_info->CommandStatus, DRIVER_OK,
2717 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
2719 case CMD_CONNECTION_LOST:
2720 printk(KERN_WARNING "cciss: cmd %p had "
2721 "connection lost\n", cmd);
2722 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2723 cmd->err_info->CommandStatus, DRIVER_OK,
2724 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
2727 printk(KERN_WARNING "cciss: cmd %p was "
2729 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2730 cmd->err_info->CommandStatus, DRIVER_OK,
2731 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT);
2733 case CMD_ABORT_FAILED:
2734 printk(KERN_WARNING "cciss: cmd %p reports "
2735 "abort failed\n", cmd);
2736 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2737 cmd->err_info->CommandStatus, DRIVER_OK,
2738 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
2740 case CMD_UNSOLICITED_ABORT:
2741 printk(KERN_WARNING "cciss%d: unsolicited "
2742 "abort %p\n", h->ctlr, cmd);
2743 if (cmd->retry_count < MAX_CMD_RETRIES) {
2746 "cciss%d: retrying %p\n", h->ctlr, cmd);
2750 "cciss%d: %p retried too "
2751 "many times\n", h->ctlr, cmd);
2752 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2753 cmd->err_info->CommandStatus, DRIVER_OK,
2754 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT);
2757 printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd);
2758 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2759 cmd->err_info->CommandStatus, DRIVER_OK,
2760 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
2763 printk(KERN_WARNING "cciss: cmd %p returned "
2764 "unknown status %x\n", cmd,
2765 cmd->err_info->CommandStatus);
2766 rq->errors = make_status_bytes(SAM_STAT_GOOD,
2767 cmd->err_info->CommandStatus, DRIVER_OK,
2768 blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
2771 after_error_processing:
2773 /* We need to return this command */
2775 resend_cciss_cmd(h, cmd);
2778 cmd->rq->completion_data = cmd;
2779 blk_complete_request(cmd->rq);
2783 * Get a request and submit it to the controller.
2785 static void do_cciss_request(struct request_queue *q)
2787 ctlr_info_t *h = q->queuedata;
2788 CommandList_struct *c;
2791 struct request *creq;
2793 struct scatterlist tmp_sg[MAXSGENTRIES];
2794 drive_info_struct *drv;
2797 /* We call start_io here in case there is a command waiting on the
2798 * queue that has not been sent.
2800 if (blk_queue_plugged(q))
2804 creq = blk_peek_request(q);
2808 BUG_ON(creq->nr_phys_segments > MAXSGENTRIES);
2810 if ((c = cmd_alloc(h, 1)) == NULL)
2813 blk_start_request(creq);
2815 spin_unlock_irq(q->queue_lock);
2817 c->cmd_type = CMD_RWREQ;
2820 /* fill in the request */
2821 drv = creq->rq_disk->private_data;
2822 c->Header.ReplyQueue = 0; // unused in simple mode
2823 /* got command from pool, so use the command block index instead */
2824 /* for direct lookups. */
2825 /* The first 2 bits are reserved for controller error reporting. */
2826 c->Header.Tag.lower = (c->cmdindex << 3);
2827 c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */
2828 c->Header.LUN.LogDev.VolId = drv->LunID;
2829 c->Header.LUN.LogDev.Mode = 1;
2830 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2831 c->Request.Type.Type = TYPE_CMD; // It is a command.
2832 c->Request.Type.Attribute = ATTR_SIMPLE;
2833 c->Request.Type.Direction =
2834 (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE;
2835 c->Request.Timeout = 0; // Don't time out
2837 (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write;
2838 start_blk = blk_rq_pos(creq);
2840 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",
2841 (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq));
2842 #endif /* CCISS_DEBUG */
2844 sg_init_table(tmp_sg, MAXSGENTRIES);
2845 seg = blk_rq_map_sg(q, creq, tmp_sg);
2847 /* get the DMA records for the setup */
2848 if (c->Request.Type.Direction == XFER_READ)
2849 dir = PCI_DMA_FROMDEVICE;
2851 dir = PCI_DMA_TODEVICE;
2853 for (i = 0; i < seg; i++) {
2854 c->SG[i].Len = tmp_sg[i].length;
2855 temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]),
2857 tmp_sg[i].length, dir);
2858 c->SG[i].Addr.lower = temp64.val32.lower;
2859 c->SG[i].Addr.upper = temp64.val32.upper;
2860 c->SG[i].Ext = 0; // we are not chaining
2862 /* track how many SG entries we are using */
2867 printk(KERN_DEBUG "cciss: Submitting %u sectors in %d segments\n",
2868 blk_rq_sectors(creq), seg);
2869 #endif /* CCISS_DEBUG */
2871 c->Header.SGList = c->Header.SGTotal = seg;
2872 if (likely(blk_fs_request(creq))) {
2873 if(h->cciss_read == CCISS_READ_10) {
2874 c->Request.CDB[1] = 0;
2875 c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB
2876 c->Request.CDB[3] = (start_blk >> 16) & 0xff;
2877 c->Request.CDB[4] = (start_blk >> 8) & 0xff;
2878 c->Request.CDB[5] = start_blk & 0xff;
2879 c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB
2880 c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff;
2881 c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff;
2882 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2884 u32 upper32 = upper_32_bits(start_blk);
2886 c->Request.CDBLen = 16;
2887 c->Request.CDB[1]= 0;
2888 c->Request.CDB[2]= (upper32 >> 24) & 0xff; //MSB
2889 c->Request.CDB[3]= (upper32 >> 16) & 0xff;
2890 c->Request.CDB[4]= (upper32 >> 8) & 0xff;
2891 c->Request.CDB[5]= upper32 & 0xff;
2892 c->Request.CDB[6]= (start_blk >> 24) & 0xff;
2893 c->Request.CDB[7]= (start_blk >> 16) & 0xff;
2894 c->Request.CDB[8]= (start_blk >> 8) & 0xff;
2895 c->Request.CDB[9]= start_blk & 0xff;
2896 c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff;
2897 c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff;
2898 c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff;
2899 c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff;
2900 c->Request.CDB[14] = c->Request.CDB[15] = 0;
2902 } else if (blk_pc_request(creq)) {
2903 c->Request.CDBLen = creq->cmd_len;
2904 memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB);
2906 printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type);
2910 spin_lock_irq(q->queue_lock);
2914 if (h->Qdepth > h->maxQsinceinit)
2915 h->maxQsinceinit = h->Qdepth;
2921 /* We will already have the driver lock here so not need
2927 static inline unsigned long get_next_completion(ctlr_info_t *h)
2929 #ifdef CONFIG_CISS_SCSI_TAPE
2930 /* Any rejects from sendcmd() lying around? Process them first */
2931 if (h->scsi_rejects.ncompletions == 0)
2932 return h->access.command_completed(h);
2934 struct sendcmd_reject_list *srl;
2936 srl = &h->scsi_rejects;
2937 n = --srl->ncompletions;
2938 /* printk("cciss%d: processing saved reject\n", h->ctlr); */
2940 return srl->complete[n];
2943 return h->access.command_completed(h);
2947 static inline int interrupt_pending(ctlr_info_t *h)
2949 #ifdef CONFIG_CISS_SCSI_TAPE
2950 return (h->access.intr_pending(h)
2951 || (h->scsi_rejects.ncompletions > 0));
2953 return h->access.intr_pending(h);
2957 static inline long interrupt_not_for_us(ctlr_info_t *h)
2959 #ifdef CONFIG_CISS_SCSI_TAPE
2960 return (((h->access.intr_pending(h) == 0) ||
2961 (h->interrupts_enabled == 0))
2962 && (h->scsi_rejects.ncompletions == 0));
2964 return (((h->access.intr_pending(h) == 0) ||
2965 (h->interrupts_enabled == 0)));
2969 static irqreturn_t do_cciss_intr(int irq, void *dev_id)
2971 ctlr_info_t *h = dev_id;
2972 CommandList_struct *c;
2973 unsigned long flags;
2976 if (interrupt_not_for_us(h))
2979 * If there are completed commands in the completion queue,
2980 * we had better do something about it.
2982 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2983 while (interrupt_pending(h)) {
2984 while ((a = get_next_completion(h)) != FIFO_EMPTY) {
2988 if (a2 >= h->nr_cmds) {
2990 "cciss: controller cciss%d failed, stopping.\n",
2992 fail_all_cmds(h->ctlr);
2996 c = h->cmd_pool + a2;
3000 struct hlist_node *tmp;
3004 hlist_for_each_entry(c, tmp, &h->cmpQ, list) {
3005 if (c->busaddr == a)
3010 * If we've found the command, take it off the
3011 * completion Q and free it
3013 if (c && c->busaddr == a) {
3015 if (c->cmd_type == CMD_RWREQ) {
3016 complete_command(h, c, 0);
3017 } else if (c->cmd_type == CMD_IOCTL_PEND) {
3018 complete(c->waiting);
3020 # ifdef CONFIG_CISS_SCSI_TAPE
3021 else if (c->cmd_type == CMD_SCSI)
3022 complete_scsi_command(c, 0, a1);
3029 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
3033 static int scan_thread(void *data)
3035 ctlr_info_t *h = data;
3037 DECLARE_COMPLETION_ONSTACK(wait);
3038 h->rescan_wait = &wait;
3041 rc = wait_for_completion_interruptible(&wait);
3042 if (kthread_should_stop())
3045 rebuild_lun_table(h, 0);
3050 static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c)
3052 if (c->err_info->SenseInfo[2] != UNIT_ATTENTION)
3055 switch (c->err_info->SenseInfo[12]) {
3057 printk(KERN_WARNING "cciss%d: a state change "
3058 "detected, command retried\n", h->ctlr);
3062 printk(KERN_WARNING "cciss%d: LUN failure "
3063 "detected, action required\n", h->ctlr);
3066 case REPORT_LUNS_CHANGED:
3067 printk(KERN_WARNING "cciss%d: report LUN data "
3068 "changed\n", h->ctlr);
3070 complete(h->rescan_wait);
3073 case POWER_OR_RESET:
3074 printk(KERN_WARNING "cciss%d: a power on "
3075 "or device reset detected\n", h->ctlr);
3078 case UNIT_ATTENTION_CLEARED:
3079 printk(KERN_WARNING "cciss%d: unit attention "
3080 "cleared by another initiator\n", h->ctlr);
3084 printk(KERN_WARNING "cciss%d: unknown "
3085 "unit attention detected\n", h->ctlr);
3091 * We cannot read the structure directly, for portability we must use
3093 * This is for debug only.
3096 static void print_cfg_table(CfgTable_struct *tb)
3101 printk("Controller Configuration information\n");
3102 printk("------------------------------------\n");
3103 for (i = 0; i < 4; i++)
3104 temp_name[i] = readb(&(tb->Signature[i]));
3105 temp_name[4] = '\0';
3106 printk(" Signature = %s\n", temp_name);
3107 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
3108 printk(" Transport methods supported = 0x%x\n",
3109 readl(&(tb->TransportSupport)));
3110 printk(" Transport methods active = 0x%x\n",
3111 readl(&(tb->TransportActive)));
3112 printk(" Requested transport Method = 0x%x\n",
3113 readl(&(tb->HostWrite.TransportRequest)));
3114 printk(" Coalesce Interrupt Delay = 0x%x\n",
3115 readl(&(tb->HostWrite.CoalIntDelay)));
3116 printk(" Coalesce Interrupt Count = 0x%x\n",
3117 readl(&(tb->HostWrite.CoalIntCount)));
3118 printk(" Max outstanding commands = 0x%d\n",
3119 readl(&(tb->CmdsOutMax)));
3120 printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
3121 for (i = 0; i < 16; i++)
3122 temp_name[i] = readb(&(tb->ServerName[i]));
3123 temp_name[16] = '\0';
3124 printk(" Server Name = %s\n", temp_name);
3125 printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat)));
3127 #endif /* CCISS_DEBUG */
3129 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
3131 int i, offset, mem_type, bar_type;
3132 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
3135 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
3136 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
3137 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
3140 mem_type = pci_resource_flags(pdev, i) &
3141 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
3143 case PCI_BASE_ADDRESS_MEM_TYPE_32:
3144 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
3145 offset += 4; /* 32 bit */
3147 case PCI_BASE_ADDRESS_MEM_TYPE_64:
3150 default: /* reserved in PCI 2.2 */
3152 "Base address is invalid\n");
3157 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
3163 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
3164 * controllers that are capable. If not, we use IO-APIC mode.
3167 static void __devinit cciss_interrupt_mode(ctlr_info_t *c,
3168 struct pci_dev *pdev, __u32 board_id)
3170 #ifdef CONFIG_PCI_MSI
3172 struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1},
3176 /* Some boards advertise MSI but don't really support it */
3177 if ((board_id == 0x40700E11) ||
3178 (board_id == 0x40800E11) ||
3179 (board_id == 0x40820E11) || (board_id == 0x40830E11))
3180 goto default_int_mode;
3182 if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) {
3183 err = pci_enable_msix(pdev, cciss_msix_entries, 4);
3185 c->intr[0] = cciss_msix_entries[0].vector;
3186 c->intr[1] = cciss_msix_entries[1].vector;
3187 c->intr[2] = cciss_msix_entries[2].vector;
3188 c->intr[3] = cciss_msix_entries[3].vector;
3193 printk(KERN_WARNING "cciss: only %d MSI-X vectors "
3194 "available\n", err);
3195 goto default_int_mode;
3197 printk(KERN_WARNING "cciss: MSI-X init failed %d\n",
3199 goto default_int_mode;
3202 if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) {
3203 if (!pci_enable_msi(pdev)) {
3206 printk(KERN_WARNING "cciss: MSI init failed\n");
3210 #endif /* CONFIG_PCI_MSI */
3211 /* if we get here we're going to use the default interrupt mode */
3212 c->intr[SIMPLE_MODE_INT] = pdev->irq;
3216 static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
3218 ushort subsystem_vendor_id, subsystem_device_id, command;
3219 __u32 board_id, scratchpad = 0;
3221 __u32 cfg_base_addr;
3222 __u64 cfg_base_addr_index;
3225 /* check to see if controller has been disabled */
3226 /* BEFORE trying to enable it */
3227 (void)pci_read_config_word(pdev, PCI_COMMAND, &command);
3228 if (!(command & 0x02)) {
3230 "cciss: controller appears to be disabled\n");
3234 err = pci_enable_device(pdev);
3236 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
3240 err = pci_request_regions(pdev, "cciss");
3242 printk(KERN_ERR "cciss: Cannot obtain PCI resources, "
3247 subsystem_vendor_id = pdev->subsystem_vendor;
3248 subsystem_device_id = pdev->subsystem_device;
3249 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
3250 subsystem_vendor_id);
3253 printk("command = %x\n", command);
3254 printk("irq = %x\n", pdev->irq);
3255 printk("board_id = %x\n", board_id);
3256 #endif /* CCISS_DEBUG */
3258 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
3259 * else we use the IO-APIC interrupt assigned to us by system ROM.
3261 cciss_interrupt_mode(c, pdev, board_id);
3263 /* find the memory BAR */
3264 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
3265 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM)
3268 if (i == DEVICE_COUNT_RESOURCE) {
3269 printk(KERN_WARNING "cciss: No memory BAR found\n");
3271 goto err_out_free_res;
3274 c->paddr = pci_resource_start(pdev, i); /* addressing mode bits
3279 printk("address 0 = %lx\n", c->paddr);
3280 #endif /* CCISS_DEBUG */
3281 c->vaddr = remap_pci_mem(c->paddr, 0x250);
3283 /* Wait for the board to become ready. (PCI hotplug needs this.)
3284 * We poll for up to 120 secs, once per 100ms. */
3285 for (i = 0; i < 1200; i++) {
3286 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
3287 if (scratchpad == CCISS_FIRMWARE_READY)
3289 set_current_state(TASK_INTERRUPTIBLE);
3290 schedule_timeout(HZ / 10); /* wait 100ms */
3292 if (scratchpad != CCISS_FIRMWARE_READY) {
3293 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
3295 goto err_out_free_res;
3298 /* get the address index number */
3299 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
3300 cfg_base_addr &= (__u32) 0x0000ffff;
3302 printk("cfg base address = %x\n", cfg_base_addr);
3303 #endif /* CCISS_DEBUG */
3304 cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr);
3306 printk("cfg base address index = %llx\n",
3307 (unsigned long long)cfg_base_addr_index);
3308 #endif /* CCISS_DEBUG */
3309 if (cfg_base_addr_index == -1) {
3310 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
3312 goto err_out_free_res;
3315 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
3317 printk("cfg offset = %llx\n", (unsigned long long)cfg_offset);
3318 #endif /* CCISS_DEBUG */
3319 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
3320 cfg_base_addr_index) +
3321 cfg_offset, sizeof(CfgTable_struct));
3322 c->board_id = board_id;
3325 print_cfg_table(c->cfgtable);
3326 #endif /* CCISS_DEBUG */
3328 /* Some controllers support Zero Memory Raid (ZMR).
3329 * When configured in ZMR mode the number of supported
3330 * commands drops to 64. So instead of just setting an
3331 * arbitrary value we make the driver a little smarter.
3332 * We read the config table to tell us how many commands
3333 * are supported on the controller then subtract 4 to
3334 * leave a little room for ioctl calls.
3336 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
3337 for (i = 0; i < ARRAY_SIZE(products); i++) {
3338 if (board_id == products[i].board_id) {
3339 c->product_name = products[i].product_name;
3340 c->access = *(products[i].access);
3341 c->nr_cmds = c->max_commands - 4;
3345 if ((readb(&c->cfgtable->Signature[0]) != 'C') ||
3346 (readb(&c->cfgtable->Signature[1]) != 'I') ||
3347 (readb(&c->cfgtable->Signature[2]) != 'S') ||
3348 (readb(&c->cfgtable->Signature[3]) != 'S')) {
3349 printk("Does not appear to be a valid CISS config table\n");
3351 goto err_out_free_res;
3353 /* We didn't find the controller in our list. We know the
3354 * signature is valid. If it's an HP device let's try to
3355 * bind to the device and fire it up. Otherwise we bail.
3357 if (i == ARRAY_SIZE(products)) {
3358 if (subsystem_vendor_id == PCI_VENDOR_ID_HP) {
3359 c->product_name = products[i-1].product_name;
3360 c->access = *(products[i-1].access);
3361 c->nr_cmds = c->max_commands - 4;
3362 printk(KERN_WARNING "cciss: This is an unknown "
3363 "Smart Array controller.\n"
3364 "cciss: Please update to the latest driver "
3365 "available from www.hp.com.\n");
3367 printk(KERN_WARNING "cciss: Sorry, I don't know how"
3368 " to access the Smart Array controller %08lx\n"
3369 , (unsigned long)board_id);
3371 goto err_out_free_res;
3376 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
3378 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
3380 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
3384 /* Disabling DMA prefetch and refetch for the P600.
3385 * An ASIC bug may result in accesses to invalid memory addresses.
3386 * We've disabled prefetch for some time now. Testing with XEN
3387 * kernels revealed a bug in the refetch if dom0 resides on a P600.
3389 if(board_id == 0x3225103C) {
3392 dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG);
3393 dma_prefetch |= 0x8000;
3394 writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG);
3395 pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch);
3397 pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch);
3401 printk("Trying to put board into Simple mode\n");
3402 #endif /* CCISS_DEBUG */
3403 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
3404 /* Update the field, and then ring the doorbell */
3405 writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest));
3406 writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
3408 /* under certain very rare conditions, this can take awhile.
3409 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
3410 * as we enter this code.) */
3411 for (i = 0; i < MAX_CONFIG_WAIT; i++) {
3412 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
3414 /* delay and try again */
3415 set_current_state(TASK_INTERRUPTIBLE);
3416 schedule_timeout(10);
3420 printk(KERN_DEBUG "I counter got to %d %x\n", i,
3421 readl(c->vaddr + SA5_DOORBELL));
3422 #endif /* CCISS_DEBUG */
3424 print_cfg_table(c->cfgtable);
3425 #endif /* CCISS_DEBUG */
3427 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
3428 printk(KERN_WARNING "cciss: unable to get board into"
3431 goto err_out_free_res;
3437 * Deliberately omit pci_disable_device(): it does something nasty to
3438 * Smart Array controllers that pci_enable_device does not undo
3440 pci_release_regions(pdev);
3444 /* Function to find the first free pointer into our hba[] array
3445 * Returns -1 if no free entries are left.
3447 static int alloc_cciss_hba(void)
3451 for (i = 0; i < MAX_CTLR; i++) {
3455 p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL);
3462 printk(KERN_WARNING "cciss: This driver supports a maximum"
3463 " of %d controllers.\n", MAX_CTLR);
3466 printk(KERN_ERR "cciss: out of memory.\n");
3470 static void free_hba(int i)
3472 ctlr_info_t *p = hba[i];
3476 for (n = 0; n < CISS_MAX_LUN; n++)
3477 put_disk(p->gendisk[n]);
3481 /* Send a message CDB to the firmware. */
3482 static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type)
3485 CommandListHeader_struct CommandHeader;
3486 RequestBlock_struct Request;
3487 ErrDescriptor_struct ErrorDescriptor;
3489 static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct);
3492 uint32_t paddr32, tag;
3493 void __iomem *vaddr;
3496 vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
3500 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
3501 CCISS commands, so they must be allocated from the lower 4GiB of
3503 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3509 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
3515 /* This must fit, because of the 32-bit consistent DMA mask. Also,
3516 although there's no guarantee, we assume that the address is at
3517 least 4-byte aligned (most likely, it's page-aligned). */
3520 cmd->CommandHeader.ReplyQueue = 0;
3521 cmd->CommandHeader.SGList = 0;
3522 cmd->CommandHeader.SGTotal = 0;
3523 cmd->CommandHeader.Tag.lower = paddr32;
3524 cmd->CommandHeader.Tag.upper = 0;
3525 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
3527 cmd->Request.CDBLen = 16;
3528 cmd->Request.Type.Type = TYPE_MSG;
3529 cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE;
3530 cmd->Request.Type.Direction = XFER_NONE;
3531 cmd->Request.Timeout = 0; /* Don't time out */
3532 cmd->Request.CDB[0] = opcode;
3533 cmd->Request.CDB[1] = type;
3534 memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */
3536 cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command);
3537 cmd->ErrorDescriptor.Addr.upper = 0;
3538 cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct);
3540 writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET);
3542 for (i = 0; i < 10; i++) {
3543 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
3544 if ((tag & ~3) == paddr32)
3546 schedule_timeout_uninterruptible(HZ);
3551 /* we leak the DMA buffer here ... no choice since the controller could
3552 still complete the command. */
3554 printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n",
3559 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
3562 printk(KERN_ERR "cciss: controller message %02x:%02x failed\n",
3567 printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n",
3572 #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0)
3573 #define cciss_noop(p) cciss_message(p, 3, 0)
3575 static __devinit int cciss_reset_msi(struct pci_dev *pdev)
3577 /* the #defines are stolen from drivers/pci/msi.h. */
3578 #define msi_control_reg(base) (base + PCI_MSI_FLAGS)
3579 #define PCI_MSIX_FLAGS_ENABLE (1 << 15)
3584 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
3586 pci_read_config_word(pdev, msi_control_reg(pos), &control);
3587 if (control & PCI_MSI_FLAGS_ENABLE) {
3588 printk(KERN_INFO "cciss: resetting MSI\n");
3589 pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE);
3593 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
3595 pci_read_config_word(pdev, msi_control_reg(pos), &control);
3596 if (control & PCI_MSIX_FLAGS_ENABLE) {
3597 printk(KERN_INFO "cciss: resetting MSI-X\n");
3598 pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE);
3605 /* This does a hard reset of the controller using PCI power management
3607 static __devinit int cciss_hard_reset_controller(struct pci_dev *pdev)
3609 u16 pmcsr, saved_config_space[32];
3612 printk(KERN_INFO "cciss: using PCI PM to reset controller\n");
3614 /* This is very nearly the same thing as
3616 pci_save_state(pci_dev);
3617 pci_set_power_state(pci_dev, PCI_D3hot);
3618 pci_set_power_state(pci_dev, PCI_D0);
3619 pci_restore_state(pci_dev);
3621 but we can't use these nice canned kernel routines on
3622 kexec, because they also check the MSI/MSI-X state in PCI
3623 configuration space and do the wrong thing when it is
3624 set/cleared. Also, the pci_save/restore_state functions
3625 violate the ordering requirements for restoring the
3626 configuration space from the CCISS document (see the
3627 comment below). So we roll our own .... */
3629 for (i = 0; i < 32; i++)
3630 pci_read_config_word(pdev, 2*i, &saved_config_space[i]);
3632 pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
3634 printk(KERN_ERR "cciss_reset_controller: PCI PM not supported\n");
3638 /* Quoting from the Open CISS Specification: "The Power
3639 * Management Control/Status Register (CSR) controls the power
3640 * state of the device. The normal operating state is D0,
3641 * CSR=00h. The software off state is D3, CSR=03h. To reset
3642 * the controller, place the interface device in D3 then to
3643 * D0, this causes a secondary PCI reset which will reset the
3646 /* enter the D3hot power management state */
3647 pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr);
3648 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3650 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
3652 schedule_timeout_uninterruptible(HZ >> 1);
3654 /* enter the D0 power management state */
3655 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3657 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
3659 schedule_timeout_uninterruptible(HZ >> 1);
3661 /* Restore the PCI configuration space. The Open CISS
3662 * Specification says, "Restore the PCI Configuration
3663 * Registers, offsets 00h through 60h. It is important to
3664 * restore the command register, 16-bits at offset 04h,
3665 * last. Do not restore the configuration status register,
3666 * 16-bits at offset 06h." Note that the offset is 2*i. */
3667 for (i = 0; i < 32; i++) {
3668 if (i == 2 || i == 3)
3670 pci_write_config_word(pdev, 2*i, saved_config_space[i]);
3673 pci_write_config_word(pdev, 4, saved_config_space[2]);
3679 * This is it. Find all the controllers and register them. I really hate
3680 * stealing all these major device numbers.
3681 * returns the number of block devices registered.
3683 static int __devinit cciss_init_one(struct pci_dev *pdev,
3684 const struct pci_device_id *ent)
3689 int dac, return_code;
3690 InquiryData_struct *inq_buff = NULL;
3692 if (reset_devices) {
3693 /* Reset the controller with a PCI power-cycle */
3694 if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev))
3697 /* Now try to get the controller to respond to a no-op. Some
3698 devices (notably the HP Smart Array 5i Controller) need
3699 up to 30 seconds to respond. */
3700 for (i=0; i<30; i++) {
3701 if (cciss_noop(pdev) == 0)
3704 schedule_timeout_uninterruptible(HZ);
3707 printk(KERN_ERR "cciss: controller seems dead\n");
3712 i = alloc_cciss_hba();
3716 hba[i]->busy_initializing = 1;
3717 INIT_HLIST_HEAD(&hba[i]->cmpQ);
3718 INIT_HLIST_HEAD(&hba[i]->reqQ);
3720 if (cciss_pci_init(hba[i], pdev) != 0)
3723 sprintf(hba[i]->devname, "cciss%d", i);
3725 hba[i]->pdev = pdev;
3727 /* configure PCI DMA stuff */
3728 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
3730 else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
3733 printk(KERN_ERR "cciss: no suitable DMA available\n");
3738 * register with the major number, or get a dynamic major number
3739 * by passing 0 as argument. This is done for greater than
3740 * 8 controller support.
3742 if (i < MAX_CTLR_ORIG)
3743 hba[i]->major = COMPAQ_CISS_MAJOR + i;
3744 rc = register_blkdev(hba[i]->major, hba[i]->devname);
3745 if (rc == -EBUSY || rc == -EINVAL) {
3747 "cciss: Unable to get major number %d for %s "
3748 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
3751 if (i >= MAX_CTLR_ORIG)
3755 /* make sure the board interrupts are off */
3756 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
3757 if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr,
3758 IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) {
3759 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
3760 hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname);
3764 printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
3765 hba[i]->devname, pdev->device, pci_name(pdev),
3766 hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not");
3768 hba[i]->cmd_pool_bits =
3769 kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG)
3770 * sizeof(unsigned long), GFP_KERNEL);
3771 hba[i]->cmd_pool = (CommandList_struct *)
3772 pci_alloc_consistent(hba[i]->pdev,
3773 hba[i]->nr_cmds * sizeof(CommandList_struct),
3774 &(hba[i]->cmd_pool_dhandle));
3775 hba[i]->errinfo_pool = (ErrorInfo_struct *)
3776 pci_alloc_consistent(hba[i]->pdev,
3777 hba[i]->nr_cmds * sizeof(ErrorInfo_struct),
3778 &(hba[i]->errinfo_pool_dhandle));
3779 if ((hba[i]->cmd_pool_bits == NULL)
3780 || (hba[i]->cmd_pool == NULL)
3781 || (hba[i]->errinfo_pool == NULL)) {
3782 printk(KERN_ERR "cciss: out of memory");
3785 #ifdef CONFIG_CISS_SCSI_TAPE
3786 hba[i]->scsi_rejects.complete =
3787 kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) *
3788 (hba[i]->nr_cmds + 5), GFP_KERNEL);
3789 if (hba[i]->scsi_rejects.complete == NULL) {
3790 printk(KERN_ERR "cciss: out of memory");
3794 spin_lock_init(&hba[i]->lock);
3796 /* Initialize the pdev driver private data.
3797 have it point to hba[i]. */
3798 pci_set_drvdata(pdev, hba[i]);
3799 /* command and error info recs zeroed out before
3801 memset(hba[i]->cmd_pool_bits, 0,
3802 DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG)
3803 * sizeof(unsigned long));
3805 hba[i]->num_luns = 0;
3806 hba[i]->highest_lun = -1;
3807 for (j = 0; j < CISS_MAX_LUN; j++) {
3808 hba[i]->drv[j].raid_level = -1;
3809 hba[i]->drv[j].queue = NULL;
3810 hba[i]->gendisk[j] = NULL;
3813 cciss_scsi_setup(i);
3815 /* Turn the interrupts on so we can service requests */
3816 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
3818 /* Get the firmware version */
3819 inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL);
3820 if (inq_buff == NULL) {
3821 printk(KERN_ERR "cciss: out of memory\n");
3825 return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff,
3826 sizeof(InquiryData_struct), 0, 0 , 0, TYPE_CMD);
3827 if (return_code == IO_OK) {
3828 hba[i]->firm_ver[0] = inq_buff->data_byte[32];
3829 hba[i]->firm_ver[1] = inq_buff->data_byte[33];
3830 hba[i]->firm_ver[2] = inq_buff->data_byte[34];
3831 hba[i]->firm_ver[3] = inq_buff->data_byte[35];
3832 } else { /* send command failed */
3833 printk(KERN_WARNING "cciss: unable to determine firmware"
3834 " version of controller\n");
3839 hba[i]->cciss_max_sectors = 2048;
3841 hba[i]->busy_initializing = 0;
3843 rebuild_lun_table(hba[i], 1);
3844 hba[i]->cciss_scan_thread = kthread_run(scan_thread, hba[i],
3845 "cciss_scan%02d", i);
3846 if (IS_ERR(hba[i]->cciss_scan_thread))
3847 return PTR_ERR(hba[i]->cciss_scan_thread);
3853 #ifdef CONFIG_CISS_SCSI_TAPE
3854 kfree(hba[i]->scsi_rejects.complete);
3856 kfree(hba[i]->cmd_pool_bits);
3857 if (hba[i]->cmd_pool)
3858 pci_free_consistent(hba[i]->pdev,
3859 hba[i]->nr_cmds * sizeof(CommandList_struct),
3860 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3861 if (hba[i]->errinfo_pool)
3862 pci_free_consistent(hba[i]->pdev,
3863 hba[i]->nr_cmds * sizeof(ErrorInfo_struct),
3864 hba[i]->errinfo_pool,
3865 hba[i]->errinfo_pool_dhandle);
3866 free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]);
3868 unregister_blkdev(hba[i]->major, hba[i]->devname);
3870 hba[i]->busy_initializing = 0;
3871 /* cleanup any queues that may have been initialized */
3872 for (j=0; j <= hba[i]->highest_lun; j++){
3873 drive_info_struct *drv = &(hba[i]->drv[j]);
3875 blk_cleanup_queue(drv->queue);
3878 * Deliberately omit pci_disable_device(): it does something nasty to
3879 * Smart Array controllers that pci_enable_device does not undo
3881 pci_release_regions(pdev);
3882 pci_set_drvdata(pdev, NULL);
3887 static void cciss_shutdown(struct pci_dev *pdev)
3889 ctlr_info_t *tmp_ptr;
3894 tmp_ptr = pci_get_drvdata(pdev);
3895 if (tmp_ptr == NULL)
3901 /* Turn board interrupts off and send the flush cache command */
3902 /* sendcmd will turn off interrupt, and send the flush...
3903 * To write all data in the battery backed cache to disks */
3904 memset(flush_buf, 0, 4);
3905 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
3907 if (return_code == IO_OK) {
3908 printk(KERN_INFO "Completed flushing cache on controller %d\n", i);
3910 printk(KERN_WARNING "Error flushing cache on controller %d\n", i);
3912 free_irq(hba[i]->intr[2], hba[i]);
3915 static void __devexit cciss_remove_one(struct pci_dev *pdev)
3917 ctlr_info_t *tmp_ptr;
3920 if (pci_get_drvdata(pdev) == NULL) {
3921 printk(KERN_ERR "cciss: Unable to remove device \n");
3925 tmp_ptr = pci_get_drvdata(pdev);
3927 if (hba[i] == NULL) {
3928 printk(KERN_ERR "cciss: device appears to "
3929 "already be removed \n");
3933 kthread_stop(hba[i]->cciss_scan_thread);
3935 remove_proc_entry(hba[i]->devname, proc_cciss);
3936 unregister_blkdev(hba[i]->major, hba[i]->devname);
3938 /* remove it from the disk list */
3939 for (j = 0; j < CISS_MAX_LUN; j++) {
3940 struct gendisk *disk = hba[i]->gendisk[j];
3942 struct request_queue *q = disk->queue;
3944 if (disk->flags & GENHD_FL_UP)
3947 blk_cleanup_queue(q);
3951 #ifdef CONFIG_CISS_SCSI_TAPE
3952 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
3955 cciss_shutdown(pdev);
3957 #ifdef CONFIG_PCI_MSI
3958 if (hba[i]->msix_vector)
3959 pci_disable_msix(hba[i]->pdev);
3960 else if (hba[i]->msi_vector)
3961 pci_disable_msi(hba[i]->pdev);
3962 #endif /* CONFIG_PCI_MSI */
3964 iounmap(hba[i]->vaddr);
3966 pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct),
3967 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3968 pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct),
3969 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
3970 kfree(hba[i]->cmd_pool_bits);
3971 #ifdef CONFIG_CISS_SCSI_TAPE
3972 kfree(hba[i]->scsi_rejects.complete);
3975 * Deliberately omit pci_disable_device(): it does something nasty to
3976 * Smart Array controllers that pci_enable_device does not undo
3978 pci_release_regions(pdev);
3979 pci_set_drvdata(pdev, NULL);
3983 static struct pci_driver cciss_pci_driver = {
3985 .probe = cciss_init_one,
3986 .remove = __devexit_p(cciss_remove_one),
3987 .id_table = cciss_pci_device_id, /* id_table */
3988 .shutdown = cciss_shutdown,
3992 * This is it. Register the PCI driver information for the cards we control
3993 * the OS will call our registered routines when it finds one of our cards.
3995 static int __init cciss_init(void)
3998 * The hardware requires that commands are aligned on a 64-bit
3999 * boundary. Given that we use pci_alloc_consistent() to allocate an
4000 * array of them, the size must be a multiple of 8 bytes.
4002 BUILD_BUG_ON(sizeof(CommandList_struct) % 8);
4004 printk(KERN_INFO DRIVER_NAME "\n");
4006 /* Register for our PCI devices */
4007 return pci_register_driver(&cciss_pci_driver);
4010 static void __exit cciss_cleanup(void)
4014 pci_unregister_driver(&cciss_pci_driver);
4015 /* double check that all controller entrys have been removed */
4016 for (i = 0; i < MAX_CTLR; i++) {
4017 if (hba[i] != NULL) {
4018 printk(KERN_WARNING "cciss: had to remove"
4019 " controller %d\n", i);
4020 cciss_remove_one(hba[i]->pdev);
4023 remove_proc_entry("driver/cciss", NULL);
4026 static void fail_all_cmds(unsigned long ctlr)
4028 /* If we get here, the board is apparently dead. */
4029 ctlr_info_t *h = hba[ctlr];
4030 CommandList_struct *c;
4031 unsigned long flags;
4033 printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr);
4034 h->alive = 0; /* the controller apparently died... */
4036 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
4038 pci_disable_device(h->pdev); /* Make sure it is really dead. */
4040 /* move everything off the request queue onto the completed queue */
4041 while (!hlist_empty(&h->reqQ)) {
4042 c = hlist_entry(h->reqQ.first, CommandList_struct, list);
4048 /* Now, fail everything on the completed queue with a HW error */
4049 while (!hlist_empty(&h->cmpQ)) {
4050 c = hlist_entry(h->cmpQ.first, CommandList_struct, list);
4052 c->err_info->CommandStatus = CMD_HARDWARE_ERR;
4053 if (c->cmd_type == CMD_RWREQ) {
4054 complete_command(h, c, 0);
4055 } else if (c->cmd_type == CMD_IOCTL_PEND)
4056 complete(c->waiting);
4057 #ifdef CONFIG_CISS_SCSI_TAPE
4058 else if (c->cmd_type == CMD_SCSI)
4059 complete_scsi_command(c, 0, 0);
4062 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
4066 module_init(cciss_init);
4067 module_exit(cciss_cleanup);