2 * Disk Array driver for HP SA 5xxx and 6xxx Controllers
3 * Copyright 2000, 2006 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; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
23 #include <linux/config.h> /* CONFIG_PROC_FS */
24 #include <linux/module.h>
25 #include <linux/interrupt.h>
26 #include <linux/types.h>
27 #include <linux/pci.h>
28 #include <linux/kernel.h>
29 #include <linux/slab.h>
30 #include <linux/delay.h>
31 #include <linux/major.h>
33 #include <linux/bio.h>
34 #include <linux/blkpg.h>
35 #include <linux/timer.h>
36 #include <linux/proc_fs.h>
37 #include <linux/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>
50 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
51 #define DRIVER_NAME "HP CISS Driver (v 3.6.10)"
52 #define DRIVER_VERSION CCISS_DRIVER_VERSION(3,6,10)
54 /* Embedded module documentation macros - see modules.h */
55 MODULE_AUTHOR("Hewlett-Packard Company");
56 MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 3.6.10");
57 MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
58 " SA6i P600 P800 P400 P400i E200 E200i E500");
59 MODULE_LICENSE("GPL");
61 #include "cciss_cmd.h"
63 #include <linux/cciss_ioctl.h>
65 /* define the PCI info for the cards we can control */
66 static const struct pci_device_id cciss_pci_device_id[] = {
67 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070},
68 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080},
69 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082},
70 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083},
71 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091},
72 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A},
73 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B},
74 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C},
75 {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D},
76 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225},
77 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223},
78 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234},
79 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235},
80 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211},
81 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212},
82 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213},
83 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214},
84 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215},
85 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3233},
89 MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
91 /* board_id = Subsystem Device ID & Vendor ID
92 * product = Marketing Name for the board
93 * access = Address of the struct of function pointers
95 static struct board_type products[] = {
96 {0x40700E11, "Smart Array 5300", &SA5_access},
97 {0x40800E11, "Smart Array 5i", &SA5B_access},
98 {0x40820E11, "Smart Array 532", &SA5B_access},
99 {0x40830E11, "Smart Array 5312", &SA5B_access},
100 {0x409A0E11, "Smart Array 641", &SA5_access},
101 {0x409B0E11, "Smart Array 642", &SA5_access},
102 {0x409C0E11, "Smart Array 6400", &SA5_access},
103 {0x409D0E11, "Smart Array 6400 EM", &SA5_access},
104 {0x40910E11, "Smart Array 6i", &SA5_access},
105 {0x3225103C, "Smart Array P600", &SA5_access},
106 {0x3223103C, "Smart Array P800", &SA5_access},
107 {0x3234103C, "Smart Array P400", &SA5_access},
108 {0x3235103C, "Smart Array P400i", &SA5_access},
109 {0x3211103C, "Smart Array E200i", &SA5_access},
110 {0x3212103C, "Smart Array E200", &SA5_access},
111 {0x3213103C, "Smart Array E200i", &SA5_access},
112 {0x3214103C, "Smart Array E200i", &SA5_access},
113 {0x3215103C, "Smart Array E200i", &SA5_access},
114 {0x3233103C, "Smart Array E500", &SA5_access},
117 /* How long to wait (in milliseconds) for board to go into simple mode */
118 #define MAX_CONFIG_WAIT 30000
119 #define MAX_IOCTL_CONFIG_WAIT 1000
121 /*define how many times we will try a command because of bus resets */
122 #define MAX_CMD_RETRIES 3
124 #define READ_AHEAD 1024
125 #define NR_CMDS 384 /* #commands that can be outstanding */
128 /* Originally cciss driver only supports 8 major numbers */
129 #define MAX_CTLR_ORIG 8
131 static ctlr_info_t *hba[MAX_CTLR];
133 static void do_cciss_request(request_queue_t *q);
134 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs);
135 static int cciss_open(struct inode *inode, struct file *filep);
136 static int cciss_release(struct inode *inode, struct file *filep);
137 static int cciss_ioctl(struct inode *inode, struct file *filep,
138 unsigned int cmd, unsigned long arg);
139 static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo);
141 static int revalidate_allvol(ctlr_info_t *host);
142 static int cciss_revalidate(struct gendisk *disk);
143 static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk);
144 static int deregister_disk(struct gendisk *disk, drive_info_struct *drv,
147 static void cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
148 int withirq, unsigned int *total_size,
149 unsigned int *block_size);
150 static void cciss_geometry_inquiry(int ctlr, int logvol, int withirq,
151 unsigned int total_size,
152 unsigned int block_size,
153 InquiryData_struct *inq_buff,
154 drive_info_struct *drv);
155 static void cciss_getgeometry(int cntl_num);
156 static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *,
158 static void start_io(ctlr_info_t *h);
159 static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size,
160 unsigned int use_unit_num, unsigned int log_unit,
161 __u8 page_code, unsigned char *scsi3addr, int cmd_type);
162 static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
163 unsigned int use_unit_num, unsigned int log_unit,
164 __u8 page_code, int cmd_type);
166 static void fail_all_cmds(unsigned long ctlr);
168 #ifdef CONFIG_PROC_FS
169 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
170 int length, int *eof, void *data);
171 static void cciss_procinit(int i);
173 static void cciss_procinit(int i)
176 #endif /* CONFIG_PROC_FS */
179 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
182 static struct block_device_operations cciss_fops = {
183 .owner = THIS_MODULE,
185 .release = cciss_release,
186 .ioctl = cciss_ioctl,
187 .getgeo = cciss_getgeo,
189 .compat_ioctl = cciss_compat_ioctl,
191 .revalidate_disk = cciss_revalidate,
195 * Enqueuing and dequeuing functions for cmdlists.
197 static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
201 c->next = c->prev = c;
203 c->prev = (*Qptr)->prev;
205 (*Qptr)->prev->next = c;
210 static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
211 CommandList_struct *c)
213 if (c && c->next != c) {
216 c->prev->next = c->next;
217 c->next->prev = c->prev;
224 #include "cciss_scsi.c" /* For SCSI tape support */
226 #ifdef CONFIG_PROC_FS
229 * Report information about this controller.
231 #define ENG_GIG 1000000000
232 #define ENG_GIG_FACTOR (ENG_GIG/512)
233 #define RAID_UNKNOWN 6
234 static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
238 static struct proc_dir_entry *proc_cciss;
240 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
241 int length, int *eof, void *data)
246 ctlr_info_t *h = (ctlr_info_t *) data;
247 drive_info_struct *drv;
249 sector_t vol_sz, vol_sz_frac;
253 /* prevent displaying bogus info during configuration
254 * or deconfiguration of a logical volume
256 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
257 if (h->busy_configuring) {
258 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
261 h->busy_configuring = 1;
262 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
264 size = sprintf(buffer, "%s: HP %s Controller\n"
265 "Board ID: 0x%08lx\n"
266 "Firmware Version: %c%c%c%c\n"
268 "Logical drives: %d\n"
269 "Current Q depth: %d\n"
270 "Current # commands on controller: %d\n"
271 "Max Q depth since init: %d\n"
272 "Max # commands on controller since init: %d\n"
273 "Max SG entries since init: %d\n\n",
276 (unsigned long)h->board_id,
277 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2],
278 h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT],
279 h->num_luns, h->Qdepth, h->commands_outstanding,
280 h->maxQsinceinit, h->max_outstanding, h->maxSG);
284 cciss_proc_tape_report(ctlr, buffer, &pos, &len);
285 for (i = 0; i <= h->highest_lun; i++) {
291 vol_sz = drv->nr_blocks;
292 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
294 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
296 if (drv->raid_level > 5)
297 drv->raid_level = RAID_UNKNOWN;
298 size = sprintf(buffer + len, "cciss/c%dd%d:"
299 "\t%4u.%02uGB\tRAID %s\n",
300 ctlr, i, (int)vol_sz, (int)vol_sz_frac,
301 raid_label[drv->raid_level]);
307 *start = buffer + offset;
311 h->busy_configuring = 0;
316 cciss_proc_write(struct file *file, const char __user *buffer,
317 unsigned long count, void *data)
319 unsigned char cmd[80];
321 #ifdef CONFIG_CISS_SCSI_TAPE
322 ctlr_info_t *h = (ctlr_info_t *) data;
326 if (count > sizeof(cmd) - 1)
328 if (copy_from_user(cmd, buffer, count))
331 len = strlen(cmd); // above 3 lines ensure safety
332 if (len && cmd[len - 1] == '\n')
334 # ifdef CONFIG_CISS_SCSI_TAPE
335 if (strcmp("engage scsi", cmd) == 0) {
336 rc = cciss_engage_scsi(h->ctlr);
341 /* might be nice to have "disengage" too, but it's not
342 safely possible. (only 1 module use count, lock issues.) */
348 * Get us a file in /proc/cciss that says something about each controller.
349 * Create /proc/cciss if it doesn't exist yet.
351 static void __devinit cciss_procinit(int i)
353 struct proc_dir_entry *pde;
355 if (proc_cciss == NULL) {
356 proc_cciss = proc_mkdir("cciss", proc_root_driver);
361 pde = create_proc_read_entry(hba[i]->devname,
362 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
363 proc_cciss, cciss_proc_get_info, hba[i]);
364 pde->write_proc = cciss_proc_write;
366 #endif /* CONFIG_PROC_FS */
369 * For operations that cannot sleep, a command block is allocated at init,
370 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
371 * which ones are free or in use. For operations that can wait for kmalloc
372 * to possible sleep, this routine can be called with get_from_pool set to 0.
373 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
375 static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool)
377 CommandList_struct *c;
380 dma_addr_t cmd_dma_handle, err_dma_handle;
382 if (!get_from_pool) {
383 c = (CommandList_struct *) pci_alloc_consistent(h->pdev,
384 sizeof(CommandList_struct), &cmd_dma_handle);
387 memset(c, 0, sizeof(CommandList_struct));
391 c->err_info = (ErrorInfo_struct *)
392 pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct),
395 if (c->err_info == NULL) {
396 pci_free_consistent(h->pdev,
397 sizeof(CommandList_struct), c, cmd_dma_handle);
400 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
401 } else { /* get it out of the controllers pool */
404 i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
407 } while (test_and_set_bit
408 (i & (BITS_PER_LONG - 1),
409 h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
411 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
414 memset(c, 0, sizeof(CommandList_struct));
415 cmd_dma_handle = h->cmd_pool_dhandle
416 + i * sizeof(CommandList_struct);
417 c->err_info = h->errinfo_pool + i;
418 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
419 err_dma_handle = h->errinfo_pool_dhandle
420 + i * sizeof(ErrorInfo_struct);
426 c->busaddr = (__u32) cmd_dma_handle;
427 temp64.val = (__u64) err_dma_handle;
428 c->ErrDesc.Addr.lower = temp64.val32.lower;
429 c->ErrDesc.Addr.upper = temp64.val32.upper;
430 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
437 * Frees a command block that was previously allocated with cmd_alloc().
439 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
444 if (!got_from_pool) {
445 temp64.val32.lower = c->ErrDesc.Addr.lower;
446 temp64.val32.upper = c->ErrDesc.Addr.upper;
447 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
448 c->err_info, (dma_addr_t) temp64.val);
449 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
450 c, (dma_addr_t) c->busaddr);
453 clear_bit(i & (BITS_PER_LONG - 1),
454 h->cmd_pool_bits + (i / BITS_PER_LONG));
459 static inline ctlr_info_t *get_host(struct gendisk *disk)
461 return disk->queue->queuedata;
464 static inline drive_info_struct *get_drv(struct gendisk *disk)
466 return disk->private_data;
470 * Open. Make sure the device is really there.
472 static int cciss_open(struct inode *inode, struct file *filep)
474 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
475 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
478 printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
479 #endif /* CCISS_DEBUG */
481 if (host->busy_initializing || drv->busy_configuring)
484 * Root is allowed to open raw volume zero even if it's not configured
485 * so array config can still work. Root is also allowed to open any
486 * volume that has a LUN ID, so it can issue IOCTL to reread the
487 * disk information. I don't think I really like this
488 * but I'm already using way to many device nodes to claim another one
489 * for "raw controller".
491 if (drv->nr_blocks == 0) {
492 if (iminor(inode) != 0) { /* not node 0? */
493 /* if not node 0 make sure it is a partition = 0 */
494 if (iminor(inode) & 0x0f) {
496 /* if it is, make sure we have a LUN ID */
497 } else if (drv->LunID == 0) {
501 if (!capable(CAP_SYS_ADMIN))
512 static int cciss_release(struct inode *inode, struct file *filep)
514 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
515 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
518 printk(KERN_DEBUG "cciss_release %s\n",
519 inode->i_bdev->bd_disk->disk_name);
520 #endif /* CCISS_DEBUG */
529 static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
533 ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
538 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd,
540 static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd,
543 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
546 case CCISS_GETPCIINFO:
547 case CCISS_GETINTINFO:
548 case CCISS_SETINTINFO:
549 case CCISS_GETNODENAME:
550 case CCISS_SETNODENAME:
551 case CCISS_GETHEARTBEAT:
552 case CCISS_GETBUSTYPES:
553 case CCISS_GETFIRMVER:
554 case CCISS_GETDRIVVER:
555 case CCISS_REVALIDVOLS:
556 case CCISS_DEREGDISK:
557 case CCISS_REGNEWDISK:
559 case CCISS_RESCANDISK:
560 case CCISS_GETLUNINFO:
561 return do_ioctl(f, cmd, arg);
563 case CCISS_PASSTHRU32:
564 return cciss_ioctl32_passthru(f, cmd, arg);
565 case CCISS_BIG_PASSTHRU32:
566 return cciss_ioctl32_big_passthru(f, cmd, arg);
573 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd,
576 IOCTL32_Command_struct __user *arg32 =
577 (IOCTL32_Command_struct __user *) arg;
578 IOCTL_Command_struct arg64;
579 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
585 copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
586 sizeof(arg64.LUN_info));
588 copy_from_user(&arg64.Request, &arg32->Request,
589 sizeof(arg64.Request));
591 copy_from_user(&arg64.error_info, &arg32->error_info,
592 sizeof(arg64.error_info));
593 err |= get_user(arg64.buf_size, &arg32->buf_size);
594 err |= get_user(cp, &arg32->buf);
595 arg64.buf = compat_ptr(cp);
596 err |= copy_to_user(p, &arg64, sizeof(arg64));
601 err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long)p);
605 copy_in_user(&arg32->error_info, &p->error_info,
606 sizeof(arg32->error_info));
612 static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd,
615 BIG_IOCTL32_Command_struct __user *arg32 =
616 (BIG_IOCTL32_Command_struct __user *) arg;
617 BIG_IOCTL_Command_struct arg64;
618 BIG_IOCTL_Command_struct __user *p =
619 compat_alloc_user_space(sizeof(arg64));
625 copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
626 sizeof(arg64.LUN_info));
628 copy_from_user(&arg64.Request, &arg32->Request,
629 sizeof(arg64.Request));
631 copy_from_user(&arg64.error_info, &arg32->error_info,
632 sizeof(arg64.error_info));
633 err |= get_user(arg64.buf_size, &arg32->buf_size);
634 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
635 err |= get_user(cp, &arg32->buf);
636 arg64.buf = compat_ptr(cp);
637 err |= copy_to_user(p, &arg64, sizeof(arg64));
642 err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long)p);
646 copy_in_user(&arg32->error_info, &p->error_info,
647 sizeof(arg32->error_info));
654 static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo)
656 drive_info_struct *drv = get_drv(bdev->bd_disk);
661 geo->heads = drv->heads;
662 geo->sectors = drv->sectors;
663 geo->cylinders = drv->cylinders;
670 static int cciss_ioctl(struct inode *inode, struct file *filep,
671 unsigned int cmd, unsigned long arg)
673 struct block_device *bdev = inode->i_bdev;
674 struct gendisk *disk = bdev->bd_disk;
675 ctlr_info_t *host = get_host(disk);
676 drive_info_struct *drv = get_drv(disk);
677 int ctlr = host->ctlr;
678 void __user *argp = (void __user *)arg;
681 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
682 #endif /* CCISS_DEBUG */
685 case CCISS_GETPCIINFO:
687 cciss_pci_info_struct pciinfo;
691 pciinfo.domain = pci_domain_nr(host->pdev->bus);
692 pciinfo.bus = host->pdev->bus->number;
693 pciinfo.dev_fn = host->pdev->devfn;
694 pciinfo.board_id = host->board_id;
696 (argp, &pciinfo, sizeof(cciss_pci_info_struct)))
700 case CCISS_GETINTINFO:
702 cciss_coalint_struct intinfo;
706 readl(&host->cfgtable->HostWrite.CoalIntDelay);
708 readl(&host->cfgtable->HostWrite.CoalIntCount);
710 (argp, &intinfo, sizeof(cciss_coalint_struct)))
714 case CCISS_SETINTINFO:
716 cciss_coalint_struct intinfo;
722 if (!capable(CAP_SYS_ADMIN))
725 (&intinfo, argp, sizeof(cciss_coalint_struct)))
727 if ((intinfo.delay == 0) && (intinfo.count == 0))
729 // printk("cciss_ioctl: delay and count cannot be 0\n");
732 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
733 /* Update the field, and then ring the doorbell */
734 writel(intinfo.delay,
735 &(host->cfgtable->HostWrite.CoalIntDelay));
736 writel(intinfo.count,
737 &(host->cfgtable->HostWrite.CoalIntCount));
738 writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
740 for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) {
741 if (!(readl(host->vaddr + SA5_DOORBELL)
744 /* delay and try again */
747 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
748 if (i >= MAX_IOCTL_CONFIG_WAIT)
752 case CCISS_GETNODENAME:
754 NodeName_type NodeName;
759 for (i = 0; i < 16; i++)
761 readb(&host->cfgtable->ServerName[i]);
762 if (copy_to_user(argp, NodeName, sizeof(NodeName_type)))
766 case CCISS_SETNODENAME:
768 NodeName_type NodeName;
774 if (!capable(CAP_SYS_ADMIN))
778 (NodeName, argp, sizeof(NodeName_type)))
781 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
783 /* Update the field, and then ring the doorbell */
784 for (i = 0; i < 16; i++)
786 &host->cfgtable->ServerName[i]);
788 writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
790 for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) {
791 if (!(readl(host->vaddr + SA5_DOORBELL)
794 /* delay and try again */
797 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
798 if (i >= MAX_IOCTL_CONFIG_WAIT)
803 case CCISS_GETHEARTBEAT:
805 Heartbeat_type heartbeat;
809 heartbeat = readl(&host->cfgtable->HeartBeat);
811 (argp, &heartbeat, sizeof(Heartbeat_type)))
815 case CCISS_GETBUSTYPES:
817 BusTypes_type BusTypes;
821 BusTypes = readl(&host->cfgtable->BusTypes);
823 (argp, &BusTypes, sizeof(BusTypes_type)))
827 case CCISS_GETFIRMVER:
829 FirmwareVer_type firmware;
833 memcpy(firmware, host->firm_ver, 4);
836 (argp, firmware, sizeof(FirmwareVer_type)))
840 case CCISS_GETDRIVVER:
842 DriverVer_type DriverVer = DRIVER_VERSION;
848 (argp, &DriverVer, sizeof(DriverVer_type)))
853 case CCISS_REVALIDVOLS:
854 if (bdev != bdev->bd_contains || drv != host->drv)
856 return revalidate_allvol(host);
858 case CCISS_GETLUNINFO:{
859 LogvolInfo_struct luninfo;
861 luninfo.LunID = drv->LunID;
862 luninfo.num_opens = drv->usage_count;
863 luninfo.num_parts = 0;
864 if (copy_to_user(argp, &luninfo,
865 sizeof(LogvolInfo_struct)))
869 case CCISS_DEREGDISK:
870 return rebuild_lun_table(host, disk);
873 return rebuild_lun_table(host, NULL);
877 IOCTL_Command_struct iocommand;
878 CommandList_struct *c;
882 DECLARE_COMPLETION(wait);
887 if (!capable(CAP_SYS_RAWIO))
891 (&iocommand, argp, sizeof(IOCTL_Command_struct)))
893 if ((iocommand.buf_size < 1) &&
894 (iocommand.Request.Type.Direction != XFER_NONE)) {
897 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
898 /* Check kmalloc limits */
899 if (iocommand.buf_size > 128000)
902 if (iocommand.buf_size > 0) {
903 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
907 if (iocommand.Request.Type.Direction == XFER_WRITE) {
908 /* Copy the data into the buffer we created */
910 (buff, iocommand.buf, iocommand.buf_size)) {
915 memset(buff, 0, iocommand.buf_size);
917 if ((c = cmd_alloc(host, 0)) == NULL) {
921 // Fill in the command type
922 c->cmd_type = CMD_IOCTL_PEND;
923 // Fill in Command Header
924 c->Header.ReplyQueue = 0; // unused in simple mode
925 if (iocommand.buf_size > 0) // buffer to fill
927 c->Header.SGList = 1;
928 c->Header.SGTotal = 1;
929 } else // no buffers to fill
931 c->Header.SGList = 0;
932 c->Header.SGTotal = 0;
934 c->Header.LUN = iocommand.LUN_info;
935 c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
937 // Fill in Request block
938 c->Request = iocommand.Request;
940 // Fill in the scatter gather information
941 if (iocommand.buf_size > 0) {
942 temp64.val = pci_map_single(host->pdev, buff,
944 PCI_DMA_BIDIRECTIONAL);
945 c->SG[0].Addr.lower = temp64.val32.lower;
946 c->SG[0].Addr.upper = temp64.val32.upper;
947 c->SG[0].Len = iocommand.buf_size;
948 c->SG[0].Ext = 0; // we are not chaining
952 /* Put the request on the tail of the request queue */
953 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
954 addQ(&host->reqQ, c);
957 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
959 wait_for_completion(&wait);
961 /* unlock the buffers from DMA */
962 temp64.val32.lower = c->SG[0].Addr.lower;
963 temp64.val32.upper = c->SG[0].Addr.upper;
964 pci_unmap_single(host->pdev, (dma_addr_t) temp64.val,
966 PCI_DMA_BIDIRECTIONAL);
968 /* Copy the error information out */
969 iocommand.error_info = *(c->err_info);
971 (argp, &iocommand, sizeof(IOCTL_Command_struct))) {
973 cmd_free(host, c, 0);
977 if (iocommand.Request.Type.Direction == XFER_READ) {
978 /* Copy the data out of the buffer we created */
980 (iocommand.buf, buff, iocommand.buf_size)) {
982 cmd_free(host, c, 0);
987 cmd_free(host, c, 0);
990 case CCISS_BIG_PASSTHRU:{
991 BIG_IOCTL_Command_struct *ioc;
992 CommandList_struct *c;
993 unsigned char **buff = NULL;
994 int *buff_size = NULL;
1000 DECLARE_COMPLETION(wait);
1003 BYTE __user *data_ptr;
1007 if (!capable(CAP_SYS_RAWIO))
1009 ioc = (BIG_IOCTL_Command_struct *)
1010 kmalloc(sizeof(*ioc), GFP_KERNEL);
1015 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
1019 if ((ioc->buf_size < 1) &&
1020 (ioc->Request.Type.Direction != XFER_NONE)) {
1024 /* Check kmalloc limits using all SGs */
1025 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
1029 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
1034 kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL);
1039 buff_size = (int *)kmalloc(MAXSGENTRIES * sizeof(int),
1045 left = ioc->buf_size;
1046 data_ptr = ioc->buf;
1049 ioc->malloc_size) ? ioc->
1051 buff_size[sg_used] = sz;
1052 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
1053 if (buff[sg_used] == NULL) {
1057 if (ioc->Request.Type.Direction == XFER_WRITE) {
1059 (buff[sg_used], data_ptr, sz)) {
1064 memset(buff[sg_used], 0, sz);
1070 if ((c = cmd_alloc(host, 0)) == NULL) {
1074 c->cmd_type = CMD_IOCTL_PEND;
1075 c->Header.ReplyQueue = 0;
1077 if (ioc->buf_size > 0) {
1078 c->Header.SGList = sg_used;
1079 c->Header.SGTotal = sg_used;
1081 c->Header.SGList = 0;
1082 c->Header.SGTotal = 0;
1084 c->Header.LUN = ioc->LUN_info;
1085 c->Header.Tag.lower = c->busaddr;
1087 c->Request = ioc->Request;
1088 if (ioc->buf_size > 0) {
1090 for (i = 0; i < sg_used; i++) {
1092 pci_map_single(host->pdev, buff[i],
1094 PCI_DMA_BIDIRECTIONAL);
1095 c->SG[i].Addr.lower =
1097 c->SG[i].Addr.upper =
1099 c->SG[i].Len = buff_size[i];
1100 c->SG[i].Ext = 0; /* we are not chaining */
1104 /* Put the request on the tail of the request queue */
1105 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1106 addQ(&host->reqQ, c);
1109 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1110 wait_for_completion(&wait);
1111 /* unlock the buffers from DMA */
1112 for (i = 0; i < sg_used; i++) {
1113 temp64.val32.lower = c->SG[i].Addr.lower;
1114 temp64.val32.upper = c->SG[i].Addr.upper;
1115 pci_unmap_single(host->pdev,
1116 (dma_addr_t) temp64.val, buff_size[i],
1117 PCI_DMA_BIDIRECTIONAL);
1119 /* Copy the error information out */
1120 ioc->error_info = *(c->err_info);
1121 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1122 cmd_free(host, c, 0);
1126 if (ioc->Request.Type.Direction == XFER_READ) {
1127 /* Copy the data out of the buffer we created */
1128 BYTE __user *ptr = ioc->buf;
1129 for (i = 0; i < sg_used; i++) {
1131 (ptr, buff[i], buff_size[i])) {
1132 cmd_free(host, c, 0);
1136 ptr += buff_size[i];
1139 cmd_free(host, c, 0);
1143 for (i = 0; i < sg_used; i++)
1157 * revalidate_allvol is for online array config utilities. After a
1158 * utility reconfigures the drives in the array, it can use this function
1159 * (through an ioctl) to make the driver zap any previous disk structs for
1160 * that controller and get new ones.
1162 * Right now I'm using the getgeometry() function to do this, but this
1163 * function should probably be finer grained and allow you to revalidate one
1164 * particular logical volume (instead of all of them on a particular
1167 static int revalidate_allvol(ctlr_info_t *host)
1169 int ctlr = host->ctlr, i;
1170 unsigned long flags;
1172 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1173 if (host->usage_count > 1) {
1174 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1175 printk(KERN_WARNING "cciss: Device busy for volume"
1176 " revalidation (usage=%d)\n", host->usage_count);
1179 host->usage_count++;
1180 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1182 for (i = 0; i < NWD; i++) {
1183 struct gendisk *disk = host->gendisk[i];
1185 request_queue_t *q = disk->queue;
1187 if (disk->flags & GENHD_FL_UP)
1190 blk_cleanup_queue(q);
1195 * Set the partition and block size structures for all volumes
1196 * on this controller to zero. We will reread all of this data
1198 memset(host->drv, 0, sizeof(drive_info_struct)
1201 * Tell the array controller not to give us any interrupts while
1202 * we check the new geometry. Then turn interrupts back on when
1205 host->access.set_intr_mask(host, CCISS_INTR_OFF);
1206 cciss_getgeometry(ctlr);
1207 host->access.set_intr_mask(host, CCISS_INTR_ON);
1209 /* Loop through each real device */
1210 for (i = 0; i < NWD; i++) {
1211 struct gendisk *disk = host->gendisk[i];
1212 drive_info_struct *drv = &(host->drv[i]);
1213 /* we must register the controller even if no disks exist */
1214 /* this is for the online array utilities */
1215 if (!drv->heads && i)
1217 blk_queue_hardsect_size(drv->queue, drv->block_size);
1218 set_capacity(disk, drv->nr_blocks);
1221 host->usage_count--;
1225 static inline void complete_buffers(struct bio *bio, int status)
1228 struct bio *xbh = bio->bi_next;
1229 int nr_sectors = bio_sectors(bio);
1231 bio->bi_next = NULL;
1232 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
1237 static void cciss_check_queues(ctlr_info_t *h)
1239 int start_queue = h->next_to_run;
1242 /* check to see if we have maxed out the number of commands that can
1243 * be placed on the queue. If so then exit. We do this check here
1244 * in case the interrupt we serviced was from an ioctl and did not
1245 * free any new commands.
1247 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
1250 /* We have room on the queue for more commands. Now we need to queue
1251 * them up. We will also keep track of the next queue to run so
1252 * that every queue gets a chance to be started first.
1254 for (i = 0; i < h->highest_lun + 1; i++) {
1255 int curr_queue = (start_queue + i) % (h->highest_lun + 1);
1256 /* make sure the disk has been added and the drive is real
1257 * because this can be called from the middle of init_one.
1259 if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads))
1261 blk_start_queue(h->gendisk[curr_queue]->queue);
1263 /* check to see if we have maxed out the number of commands
1264 * that can be placed on the queue.
1266 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) {
1267 if (curr_queue == start_queue) {
1269 (start_queue + 1) % (h->highest_lun + 1);
1272 h->next_to_run = curr_queue;
1276 curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
1281 static void cciss_softirq_done(struct request *rq)
1283 CommandList_struct *cmd = rq->completion_data;
1284 ctlr_info_t *h = hba[cmd->ctlr];
1285 unsigned long flags;
1289 if (cmd->Request.Type.Direction == XFER_READ)
1290 ddir = PCI_DMA_FROMDEVICE;
1292 ddir = PCI_DMA_TODEVICE;
1294 /* command did not need to be retried */
1295 /* unmap the DMA mapping for all the scatter gather elements */
1296 for (i = 0; i < cmd->Header.SGList; i++) {
1297 temp64.val32.lower = cmd->SG[i].Addr.lower;
1298 temp64.val32.upper = cmd->SG[i].Addr.upper;
1299 pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir);
1302 complete_buffers(rq->bio, rq->errors);
1305 printk("Done with %p\n", rq);
1306 #endif /* CCISS_DEBUG */
1308 add_disk_randomness(rq->rq_disk);
1309 spin_lock_irqsave(&h->lock, flags);
1310 end_that_request_last(rq, rq->errors);
1311 cmd_free(h, cmd, 1);
1312 cciss_check_queues(h);
1313 spin_unlock_irqrestore(&h->lock, flags);
1316 /* This function will check the usage_count of the drive to be updated/added.
1317 * If the usage_count is zero then the drive information will be updated and
1318 * the disk will be re-registered with the kernel. If not then it will be
1319 * left alone for the next reboot. The exception to this is disk 0 which
1320 * will always be left registered with the kernel since it is also the
1321 * controller node. Any changes to disk 0 will show up on the next
1324 static void cciss_update_drive_info(int ctlr, int drv_index)
1326 ctlr_info_t *h = hba[ctlr];
1327 struct gendisk *disk;
1328 ReadCapdata_struct *size_buff = NULL;
1329 InquiryData_struct *inq_buff = NULL;
1330 unsigned int block_size;
1331 unsigned int total_size;
1332 unsigned long flags = 0;
1335 /* if the disk already exists then deregister it before proceeding */
1336 if (h->drv[drv_index].raid_level != -1) {
1337 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1338 h->drv[drv_index].busy_configuring = 1;
1339 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1340 ret = deregister_disk(h->gendisk[drv_index],
1341 &h->drv[drv_index], 0);
1342 h->drv[drv_index].busy_configuring = 0;
1345 /* If the disk is in use return */
1349 /* Get information about the disk and modify the driver structure */
1350 size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
1351 if (size_buff == NULL)
1353 inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
1354 if (inq_buff == NULL)
1357 cciss_read_capacity(ctlr, drv_index, size_buff, 1,
1358 &total_size, &block_size);
1359 cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
1360 inq_buff, &h->drv[drv_index]);
1363 disk = h->gendisk[drv_index];
1364 set_capacity(disk, h->drv[drv_index].nr_blocks);
1366 /* if it's the controller it's already added */
1368 disk->queue = blk_init_queue(do_cciss_request, &h->lock);
1370 /* Set up queue information */
1371 disk->queue->backing_dev_info.ra_pages = READ_AHEAD;
1372 blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask);
1374 /* This is a hardware imposed limit. */
1375 blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES);
1377 /* This is a limit in the driver and could be eliminated. */
1378 blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES);
1380 blk_queue_max_sectors(disk->queue, 512);
1382 blk_queue_softirq_done(disk->queue, cciss_softirq_done);
1384 disk->queue->queuedata = hba[ctlr];
1386 blk_queue_hardsect_size(disk->queue,
1387 hba[ctlr]->drv[drv_index].block_size);
1389 h->drv[drv_index].queue = disk->queue;
1398 printk(KERN_ERR "cciss: out of memory\n");
1402 /* This function will find the first index of the controllers drive array
1403 * that has a -1 for the raid_level and will return that index. This is
1404 * where new drives will be added. If the index to be returned is greater
1405 * than the highest_lun index for the controller then highest_lun is set
1406 * to this new index. If there are no available indexes then -1 is returned.
1408 static int cciss_find_free_drive_index(int ctlr)
1412 for (i = 0; i < CISS_MAX_LUN; i++) {
1413 if (hba[ctlr]->drv[i].raid_level == -1) {
1414 if (i > hba[ctlr]->highest_lun)
1415 hba[ctlr]->highest_lun = i;
1422 /* This function will add and remove logical drives from the Logical
1423 * drive array of the controller and maintain persistency of ordering
1424 * so that mount points are preserved until the next reboot. This allows
1425 * for the removal of logical drives in the middle of the drive array
1426 * without a re-ordering of those drives.
1428 * h = The controller to perform the operations on
1429 * del_disk = The disk to remove if specified. If the value given
1430 * is NULL then no disk is removed.
1432 static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk)
1436 ReportLunData_struct *ld_buff = NULL;
1437 drive_info_struct *drv = NULL;
1444 unsigned long flags;
1446 /* Set busy_configuring flag for this operation */
1447 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1448 if (h->num_luns >= CISS_MAX_LUN) {
1449 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1453 if (h->busy_configuring) {
1454 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1457 h->busy_configuring = 1;
1459 /* if del_disk is NULL then we are being called to add a new disk
1460 * and update the logical drive table. If it is not NULL then
1461 * we will check if the disk is in use or not.
1463 if (del_disk != NULL) {
1464 drv = get_drv(del_disk);
1465 drv->busy_configuring = 1;
1466 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1467 return_code = deregister_disk(del_disk, drv, 1);
1468 drv->busy_configuring = 0;
1469 h->busy_configuring = 0;
1472 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1473 if (!capable(CAP_SYS_RAWIO))
1476 ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1477 if (ld_buff == NULL)
1480 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1481 sizeof(ReportLunData_struct), 0,
1484 if (return_code == IO_OK) {
1486 (0xff & (unsigned int)(ld_buff->LUNListLength[0]))
1489 (0xff & (unsigned int)(ld_buff->LUNListLength[1]))
1492 (0xff & (unsigned int)(ld_buff->LUNListLength[2]))
1495 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1496 } else { /* reading number of logical volumes failed */
1497 printk(KERN_WARNING "cciss: report logical volume"
1498 " command failed\n");
1503 num_luns = listlength / 8; /* 8 bytes per entry */
1504 if (num_luns > CISS_MAX_LUN) {
1505 num_luns = CISS_MAX_LUN;
1506 printk(KERN_WARNING "cciss: more luns configured"
1507 " on controller than can be handled by"
1511 /* Compare controller drive array to drivers drive array.
1512 * Check for updates in the drive information and any new drives
1513 * on the controller.
1515 for (i = 0; i < num_luns; i++) {
1521 (unsigned int)(ld_buff->LUN[i][3])) << 24;
1523 (unsigned int)(ld_buff->LUN[i][2])) << 16;
1525 (unsigned int)(ld_buff->LUN[i][1])) << 8;
1526 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1528 /* Find if the LUN is already in the drive array
1529 * of the controller. If so then update its info
1530 * if not is use. If it does not exist then find
1531 * the first free index and add it.
1533 for (j = 0; j <= h->highest_lun; j++) {
1534 if (h->drv[j].LunID == lunid) {
1540 /* check if the drive was found already in the array */
1542 drv_index = cciss_find_free_drive_index(ctlr);
1543 if (drv_index == -1)
1547 h->drv[drv_index].LunID = lunid;
1548 cciss_update_drive_info(ctlr, drv_index);
1554 h->busy_configuring = 0;
1555 /* We return -1 here to tell the ACU that we have registered/updated
1556 * all of the drives that we can and to keep it from calling us
1561 printk(KERN_ERR "cciss: out of memory\n");
1565 /* This function will deregister the disk and it's queue from the
1566 * kernel. It must be called with the controller lock held and the
1567 * drv structures busy_configuring flag set. It's parameters are:
1569 * disk = This is the disk to be deregistered
1570 * drv = This is the drive_info_struct associated with the disk to be
1571 * deregistered. It contains information about the disk used
1573 * clear_all = This flag determines whether or not the disk information
1574 * is going to be completely cleared out and the highest_lun
1575 * reset. Sometimes we want to clear out information about
1576 * the disk in preparation for re-adding it. In this case
1577 * the highest_lun should be left unchanged and the LunID
1578 * should not be cleared.
1580 static int deregister_disk(struct gendisk *disk, drive_info_struct *drv,
1583 ctlr_info_t *h = get_host(disk);
1585 if (!capable(CAP_SYS_RAWIO))
1588 /* make sure logical volume is NOT is use */
1589 if (clear_all || (h->gendisk[0] == disk)) {
1590 if (drv->usage_count > 1)
1592 } else if (drv->usage_count > 0)
1595 /* invalidate the devices and deregister the disk. If it is disk
1596 * zero do not deregister it but just zero out it's values. This
1597 * allows us to delete disk zero but keep the controller registered.
1599 if (h->gendisk[0] != disk) {
1601 request_queue_t *q = disk->queue;
1602 if (disk->flags & GENHD_FL_UP)
1605 blk_cleanup_queue(q);
1612 /* zero out the disk size info */
1614 drv->block_size = 0;
1618 drv->raid_level = -1; /* This can be used as a flag variable to
1619 * indicate that this element of the drive
1624 /* check to see if it was the last disk */
1625 if (drv == h->drv + h->highest_lun) {
1626 /* if so, find the new hightest lun */
1627 int i, newhighest = -1;
1628 for (i = 0; i < h->highest_lun; i++) {
1629 /* if the disk has size > 0, it is available */
1630 if (h->drv[i].heads)
1633 h->highest_lun = newhighest;
1641 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,
1642 1: address logical volume log_unit,
1643 2: periph device address is scsi3addr */
1644 unsigned int log_unit, __u8 page_code,
1645 unsigned char *scsi3addr, int cmd_type)
1647 ctlr_info_t *h = hba[ctlr];
1648 u64bit buff_dma_handle;
1651 c->cmd_type = CMD_IOCTL_PEND;
1652 c->Header.ReplyQueue = 0;
1654 c->Header.SGList = 1;
1655 c->Header.SGTotal = 1;
1657 c->Header.SGList = 0;
1658 c->Header.SGTotal = 0;
1660 c->Header.Tag.lower = c->busaddr;
1662 c->Request.Type.Type = cmd_type;
1663 if (cmd_type == TYPE_CMD) {
1666 /* If the logical unit number is 0 then, this is going
1667 to controller so It's a physical command
1668 mode = 0 target = 0. So we have nothing to write.
1669 otherwise, if use_unit_num == 1,
1670 mode = 1(volume set addressing) target = LUNID
1671 otherwise, if use_unit_num == 2,
1672 mode = 0(periph dev addr) target = scsi3addr */
1673 if (use_unit_num == 1) {
1674 c->Header.LUN.LogDev.VolId =
1675 h->drv[log_unit].LunID;
1676 c->Header.LUN.LogDev.Mode = 1;
1677 } else if (use_unit_num == 2) {
1678 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr,
1680 c->Header.LUN.LogDev.Mode = 0;
1682 /* are we trying to read a vital product page */
1683 if (page_code != 0) {
1684 c->Request.CDB[1] = 0x01;
1685 c->Request.CDB[2] = page_code;
1687 c->Request.CDBLen = 6;
1688 c->Request.Type.Attribute = ATTR_SIMPLE;
1689 c->Request.Type.Direction = XFER_READ;
1690 c->Request.Timeout = 0;
1691 c->Request.CDB[0] = CISS_INQUIRY;
1692 c->Request.CDB[4] = size & 0xFF;
1694 case CISS_REPORT_LOG:
1695 case CISS_REPORT_PHYS:
1696 /* Talking to controller so It's a physical command
1697 mode = 00 target = 0. Nothing to write.
1699 c->Request.CDBLen = 12;
1700 c->Request.Type.Attribute = ATTR_SIMPLE;
1701 c->Request.Type.Direction = XFER_READ;
1702 c->Request.Timeout = 0;
1703 c->Request.CDB[0] = cmd;
1704 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1705 c->Request.CDB[7] = (size >> 16) & 0xFF;
1706 c->Request.CDB[8] = (size >> 8) & 0xFF;
1707 c->Request.CDB[9] = size & 0xFF;
1710 case CCISS_READ_CAPACITY:
1711 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1712 c->Header.LUN.LogDev.Mode = 1;
1713 c->Request.CDBLen = 10;
1714 c->Request.Type.Attribute = ATTR_SIMPLE;
1715 c->Request.Type.Direction = XFER_READ;
1716 c->Request.Timeout = 0;
1717 c->Request.CDB[0] = cmd;
1719 case CCISS_CACHE_FLUSH:
1720 c->Request.CDBLen = 12;
1721 c->Request.Type.Attribute = ATTR_SIMPLE;
1722 c->Request.Type.Direction = XFER_WRITE;
1723 c->Request.Timeout = 0;
1724 c->Request.CDB[0] = BMIC_WRITE;
1725 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1729 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
1732 } else if (cmd_type == TYPE_MSG) {
1734 case 0: /* ABORT message */
1735 c->Request.CDBLen = 12;
1736 c->Request.Type.Attribute = ATTR_SIMPLE;
1737 c->Request.Type.Direction = XFER_WRITE;
1738 c->Request.Timeout = 0;
1739 c->Request.CDB[0] = cmd; /* abort */
1740 c->Request.CDB[1] = 0; /* abort a command */
1741 /* buff contains the tag of the command to abort */
1742 memcpy(&c->Request.CDB[4], buff, 8);
1744 case 1: /* RESET message */
1745 c->Request.CDBLen = 12;
1746 c->Request.Type.Attribute = ATTR_SIMPLE;
1747 c->Request.Type.Direction = XFER_WRITE;
1748 c->Request.Timeout = 0;
1749 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
1750 c->Request.CDB[0] = cmd; /* reset */
1751 c->Request.CDB[1] = 0x04; /* reset a LUN */
1752 case 3: /* No-Op message */
1753 c->Request.CDBLen = 1;
1754 c->Request.Type.Attribute = ATTR_SIMPLE;
1755 c->Request.Type.Direction = XFER_WRITE;
1756 c->Request.Timeout = 0;
1757 c->Request.CDB[0] = cmd;
1761 "cciss%d: unknown message type %d\n", ctlr, cmd);
1766 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1769 /* Fill in the scatter gather information */
1771 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1773 PCI_DMA_BIDIRECTIONAL);
1774 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1775 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1776 c->SG[0].Len = size;
1777 c->SG[0].Ext = 0; /* we are not chaining */
1782 static int sendcmd_withirq(__u8 cmd,
1786 unsigned int use_unit_num,
1787 unsigned int log_unit, __u8 page_code, int cmd_type)
1789 ctlr_info_t *h = hba[ctlr];
1790 CommandList_struct *c;
1791 u64bit buff_dma_handle;
1792 unsigned long flags;
1794 DECLARE_COMPLETION(wait);
1796 if ((c = cmd_alloc(h, 0)) == NULL)
1798 return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1799 log_unit, page_code, NULL, cmd_type);
1800 if (return_status != IO_OK) {
1802 return return_status;
1807 /* Put the request on the tail of the queue and send it */
1808 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1812 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1814 wait_for_completion(&wait);
1816 if (c->err_info->CommandStatus != 0) { /* an error has occurred */
1817 switch (c->err_info->CommandStatus) {
1818 case CMD_TARGET_STATUS:
1819 printk(KERN_WARNING "cciss: cmd %p has "
1820 " completed with errors\n", c);
1821 if (c->err_info->ScsiStatus) {
1822 printk(KERN_WARNING "cciss: cmd %p "
1823 "has SCSI Status = %x\n",
1824 c, c->err_info->ScsiStatus);
1828 case CMD_DATA_UNDERRUN:
1829 case CMD_DATA_OVERRUN:
1830 /* expected for inquire and report lun commands */
1833 printk(KERN_WARNING "cciss: Cmd %p is "
1834 "reported invalid\n", c);
1835 return_status = IO_ERROR;
1837 case CMD_PROTOCOL_ERR:
1838 printk(KERN_WARNING "cciss: cmd %p has "
1839 "protocol error \n", c);
1840 return_status = IO_ERROR;
1842 case CMD_HARDWARE_ERR:
1843 printk(KERN_WARNING "cciss: cmd %p had "
1844 " hardware error\n", c);
1845 return_status = IO_ERROR;
1847 case CMD_CONNECTION_LOST:
1848 printk(KERN_WARNING "cciss: cmd %p had "
1849 "connection lost\n", c);
1850 return_status = IO_ERROR;
1853 printk(KERN_WARNING "cciss: cmd %p was "
1855 return_status = IO_ERROR;
1857 case CMD_ABORT_FAILED:
1858 printk(KERN_WARNING "cciss: cmd %p reports "
1859 "abort failed\n", c);
1860 return_status = IO_ERROR;
1862 case CMD_UNSOLICITED_ABORT:
1864 "cciss%d: unsolicited abort %p\n", ctlr, c);
1865 if (c->retry_count < MAX_CMD_RETRIES) {
1867 "cciss%d: retrying %p\n", ctlr, c);
1869 /* erase the old error information */
1870 memset(c->err_info, 0,
1871 sizeof(ErrorInfo_struct));
1872 return_status = IO_OK;
1873 INIT_COMPLETION(wait);
1876 return_status = IO_ERROR;
1879 printk(KERN_WARNING "cciss: cmd %p returned "
1880 "unknown status %x\n", c,
1881 c->err_info->CommandStatus);
1882 return_status = IO_ERROR;
1885 /* unlock the buffers from DMA */
1886 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
1887 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
1888 pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val,
1889 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
1891 return return_status;
1894 static void cciss_geometry_inquiry(int ctlr, int logvol,
1895 int withirq, unsigned int total_size,
1896 unsigned int block_size,
1897 InquiryData_struct *inq_buff,
1898 drive_info_struct *drv)
1901 memset(inq_buff, 0, sizeof(InquiryData_struct));
1903 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1904 inq_buff, sizeof(*inq_buff), 1,
1905 logvol, 0xC1, TYPE_CMD);
1907 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1908 sizeof(*inq_buff), 1, logvol, 0xC1, NULL,
1910 if (return_code == IO_OK) {
1911 if (inq_buff->data_byte[8] == 0xFF) {
1913 "cciss: reading geometry failed, volume "
1914 "does not support reading geometry\n");
1915 drv->block_size = block_size;
1916 drv->nr_blocks = total_size;
1918 drv->sectors = 32; // Sectors per track
1919 drv->cylinders = total_size / 255 / 32;
1923 drv->block_size = block_size;
1924 drv->nr_blocks = total_size;
1925 drv->heads = inq_buff->data_byte[6];
1926 drv->sectors = inq_buff->data_byte[7];
1927 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1928 drv->cylinders += inq_buff->data_byte[5];
1929 drv->raid_level = inq_buff->data_byte[8];
1930 t = drv->heads * drv->sectors;
1932 drv->cylinders = total_size / t;
1935 } else { /* Get geometry failed */
1936 printk(KERN_WARNING "cciss: reading geometry failed\n");
1938 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
1939 drv->heads, drv->sectors, drv->cylinders);
1943 cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1944 int withirq, unsigned int *total_size,
1945 unsigned int *block_size)
1948 memset(buf, 0, sizeof(*buf));
1950 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1951 ctlr, buf, sizeof(*buf), 1,
1952 logvol, 0, TYPE_CMD);
1954 return_code = sendcmd(CCISS_READ_CAPACITY,
1955 ctlr, buf, sizeof(*buf), 1, logvol, 0,
1957 if (return_code == IO_OK) {
1959 be32_to_cpu(*((__be32 *) & buf->total_size[0])) + 1;
1960 *block_size = be32_to_cpu(*((__be32 *) & buf->block_size[0]));
1961 } else { /* read capacity command failed */
1962 printk(KERN_WARNING "cciss: read capacity failed\n");
1964 *block_size = BLOCK_SIZE;
1966 printk(KERN_INFO " blocks= %u block_size= %d\n",
1967 *total_size, *block_size);
1971 static int cciss_revalidate(struct gendisk *disk)
1973 ctlr_info_t *h = get_host(disk);
1974 drive_info_struct *drv = get_drv(disk);
1977 unsigned int block_size;
1978 unsigned int total_size;
1979 ReadCapdata_struct *size_buff = NULL;
1980 InquiryData_struct *inq_buff = NULL;
1982 for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) {
1983 if (h->drv[logvol].LunID == drv->LunID) {
1992 size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
1993 if (size_buff == NULL) {
1994 printk(KERN_WARNING "cciss: out of memory\n");
1997 inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
1998 if (inq_buff == NULL) {
1999 printk(KERN_WARNING "cciss: out of memory\n");
2004 cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size,
2006 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size,
2009 blk_queue_hardsect_size(drv->queue, drv->block_size);
2010 set_capacity(disk, drv->nr_blocks);
2018 * Wait polling for a command to complete.
2019 * The memory mapped FIFO is polled for the completion.
2020 * Used only at init time, interrupts from the HBA are disabled.
2022 static unsigned long pollcomplete(int ctlr)
2027 /* Wait (up to 20 seconds) for a command to complete */
2029 for (i = 20 * HZ; i > 0; i--) {
2030 done = hba[ctlr]->access.command_completed(hba[ctlr]);
2031 if (done == FIFO_EMPTY)
2032 schedule_timeout_uninterruptible(1);
2036 /* Invalid address to tell caller we ran out of time */
2040 static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete)
2042 /* We get in here if sendcmd() is polling for completions
2043 and gets some command back that it wasn't expecting --
2044 something other than that which it just sent down.
2045 Ordinarily, that shouldn't happen, but it can happen when
2046 the scsi tape stuff gets into error handling mode, and
2047 starts using sendcmd() to try to abort commands and
2048 reset tape drives. In that case, sendcmd may pick up
2049 completions of commands that were sent to logical drives
2050 through the block i/o system, or cciss ioctls completing, etc.
2051 In that case, we need to save those completions for later
2052 processing by the interrupt handler.
2055 #ifdef CONFIG_CISS_SCSI_TAPE
2056 struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects;
2058 /* If it's not the scsi tape stuff doing error handling, (abort */
2059 /* or reset) then we don't expect anything weird. */
2060 if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) {
2062 printk(KERN_WARNING "cciss cciss%d: SendCmd "
2063 "Invalid command list address returned! (%lx)\n",
2065 /* not much we can do. */
2066 #ifdef CONFIG_CISS_SCSI_TAPE
2070 /* We've sent down an abort or reset, but something else
2072 if (srl->ncompletions >= (NR_CMDS + 2)) {
2073 /* Uh oh. No room to save it for later... */
2074 printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, "
2075 "reject list overflow, command lost!\n", ctlr);
2078 /* Save it for later */
2079 srl->complete[srl->ncompletions] = complete;
2080 srl->ncompletions++;
2086 * Send a command to the controller, and wait for it to complete.
2087 * Only used at init time.
2089 static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller,
2090 1: address logical volume log_unit,
2091 2: periph device address is scsi3addr */
2092 unsigned int log_unit,
2093 __u8 page_code, unsigned char *scsi3addr, int cmd_type)
2095 CommandList_struct *c;
2097 unsigned long complete;
2098 ctlr_info_t *info_p = hba[ctlr];
2099 u64bit buff_dma_handle;
2100 int status, done = 0;
2102 if ((c = cmd_alloc(info_p, 1)) == NULL) {
2103 printk(KERN_WARNING "cciss: unable to get memory");
2106 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
2107 log_unit, page_code, scsi3addr, cmd_type);
2108 if (status != IO_OK) {
2109 cmd_free(info_p, c, 1);
2117 printk(KERN_DEBUG "cciss: turning intr off\n");
2118 #endif /* CCISS_DEBUG */
2119 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
2121 /* Make sure there is room in the command FIFO */
2122 /* Actually it should be completely empty at this time */
2123 /* unless we are in here doing error handling for the scsi */
2124 /* tape side of the driver. */
2125 for (i = 200000; i > 0; i--) {
2126 /* if fifo isn't full go */
2127 if (!(info_p->access.fifo_full(info_p))) {
2132 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
2133 " waiting!\n", ctlr);
2138 info_p->access.submit_command(info_p, c);
2141 complete = pollcomplete(ctlr);
2144 printk(KERN_DEBUG "cciss: command completed\n");
2145 #endif /* CCISS_DEBUG */
2147 if (complete == 1) {
2149 "cciss cciss%d: SendCmd Timeout out, "
2150 "No command list address returned!\n", ctlr);
2156 /* This will need to change for direct lookup completions */
2157 if ((complete & CISS_ERROR_BIT)
2158 && (complete & ~CISS_ERROR_BIT) == c->busaddr) {
2159 /* if data overrun or underun on Report command
2162 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
2163 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
2164 (c->Request.CDB[0] == CISS_INQUIRY)) &&
2165 ((c->err_info->CommandStatus ==
2166 CMD_DATA_OVERRUN) ||
2167 (c->err_info->CommandStatus == CMD_DATA_UNDERRUN)
2169 complete = c->busaddr;
2171 if (c->err_info->CommandStatus ==
2172 CMD_UNSOLICITED_ABORT) {
2173 printk(KERN_WARNING "cciss%d: "
2174 "unsolicited abort %p\n",
2176 if (c->retry_count < MAX_CMD_RETRIES) {
2178 "cciss%d: retrying %p\n",
2181 /* erase the old error */
2183 memset(c->err_info, 0,
2185 (ErrorInfo_struct));
2189 "cciss%d: retried %p too "
2190 "many times\n", ctlr, c);
2194 } else if (c->err_info->CommandStatus ==
2197 "cciss%d: command could not be aborted.\n",
2202 printk(KERN_WARNING "ciss ciss%d: sendcmd"
2203 " Error %x \n", ctlr,
2204 c->err_info->CommandStatus);
2205 printk(KERN_WARNING "ciss ciss%d: sendcmd"
2207 " size %x\n num %x value %x\n",
2209 c->err_info->MoreErrInfo.Invalid_Cmd.
2211 c->err_info->MoreErrInfo.Invalid_Cmd.
2213 c->err_info->MoreErrInfo.Invalid_Cmd.
2219 /* This will need changing for direct lookup completions */
2220 if (complete != c->busaddr) {
2221 if (add_sendcmd_reject(cmd, ctlr, complete) != 0) {
2222 BUG(); /* we are pretty much hosed if we get here. */
2230 /* unlock the data buffer from DMA */
2231 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
2232 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
2233 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
2234 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
2235 #ifdef CONFIG_CISS_SCSI_TAPE
2236 /* if we saved some commands for later, process them now. */
2237 if (info_p->scsi_rejects.ncompletions > 0)
2238 do_cciss_intr(0, info_p, NULL);
2240 cmd_free(info_p, c, 1);
2245 * Map (physical) PCI mem into (virtual) kernel space
2247 static void __iomem *remap_pci_mem(ulong base, ulong size)
2249 ulong page_base = ((ulong) base) & PAGE_MASK;
2250 ulong page_offs = ((ulong) base) - page_base;
2251 void __iomem *page_remapped = ioremap(page_base, page_offs + size);
2253 return page_remapped ? (page_remapped + page_offs) : NULL;
2257 * Takes jobs of the Q and sends them to the hardware, then puts it on
2258 * the Q to wait for completion.
2260 static void start_io(ctlr_info_t *h)
2262 CommandList_struct *c;
2264 while ((c = h->reqQ) != NULL) {
2265 /* can't do anything if fifo is full */
2266 if ((h->access.fifo_full(h))) {
2267 printk(KERN_WARNING "cciss: fifo full\n");
2271 /* Get the first entry from the Request Q */
2272 removeQ(&(h->reqQ), c);
2275 /* Tell the controller execute command */
2276 h->access.submit_command(h, c);
2278 /* Put job onto the completed Q */
2279 addQ(&(h->cmpQ), c);
2283 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
2284 /* Zeros out the error record and then resends the command back */
2285 /* to the controller */
2286 static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c)
2288 /* erase the old error information */
2289 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
2291 /* add it to software queue and then send it to the controller */
2292 addQ(&(h->reqQ), c);
2294 if (h->Qdepth > h->maxQsinceinit)
2295 h->maxQsinceinit = h->Qdepth;
2300 /* checks the status of the job and calls complete buffers to mark all
2301 * buffers for the completed job. Note that this function does not need
2302 * to hold the hba/queue lock.
2304 static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
2313 if (cmd->err_info->CommandStatus != 0) { /* an error has occurred */
2314 switch (cmd->err_info->CommandStatus) {
2315 unsigned char sense_key;
2316 case CMD_TARGET_STATUS:
2319 if (cmd->err_info->ScsiStatus == 0x02) {
2320 printk(KERN_WARNING "cciss: cmd %p "
2321 "has CHECK CONDITION "
2322 " byte 2 = 0x%x\n", cmd,
2323 cmd->err_info->SenseInfo[2]
2325 /* check the sense key */
2326 sense_key = 0xf & cmd->err_info->SenseInfo[2];
2327 /* no status or recovered error */
2328 if ((sense_key == 0x0) || (sense_key == 0x1)) {
2332 printk(KERN_WARNING "cciss: cmd %p "
2333 "has SCSI Status 0x%x\n",
2334 cmd, cmd->err_info->ScsiStatus);
2337 case CMD_DATA_UNDERRUN:
2338 printk(KERN_WARNING "cciss: cmd %p has"
2339 " completed with data underrun "
2342 case CMD_DATA_OVERRUN:
2343 printk(KERN_WARNING "cciss: cmd %p has"
2344 " completed with data overrun "
2348 printk(KERN_WARNING "cciss: cmd %p is "
2349 "reported invalid\n", cmd);
2352 case CMD_PROTOCOL_ERR:
2353 printk(KERN_WARNING "cciss: cmd %p has "
2354 "protocol error \n", cmd);
2357 case CMD_HARDWARE_ERR:
2358 printk(KERN_WARNING "cciss: cmd %p had "
2359 " hardware error\n", cmd);
2362 case CMD_CONNECTION_LOST:
2363 printk(KERN_WARNING "cciss: cmd %p had "
2364 "connection lost\n", cmd);
2368 printk(KERN_WARNING "cciss: cmd %p was "
2372 case CMD_ABORT_FAILED:
2373 printk(KERN_WARNING "cciss: cmd %p reports "
2374 "abort failed\n", cmd);
2377 case CMD_UNSOLICITED_ABORT:
2378 printk(KERN_WARNING "cciss%d: unsolicited "
2379 "abort %p\n", h->ctlr, cmd);
2380 if (cmd->retry_count < MAX_CMD_RETRIES) {
2383 "cciss%d: retrying %p\n", h->ctlr, cmd);
2387 "cciss%d: %p retried too "
2388 "many times\n", h->ctlr, cmd);
2392 printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd);
2396 printk(KERN_WARNING "cciss: cmd %p returned "
2397 "unknown status %x\n", cmd,
2398 cmd->err_info->CommandStatus);
2402 /* We need to return this command */
2404 resend_cciss_cmd(h, cmd);
2408 cmd->rq->completion_data = cmd;
2409 cmd->rq->errors = status;
2410 blk_add_trace_rq(cmd->rq->q, cmd->rq, BLK_TA_COMPLETE);
2411 blk_complete_request(cmd->rq);
2415 * Get a request and submit it to the controller.
2417 static void do_cciss_request(request_queue_t *q)
2419 ctlr_info_t *h = q->queuedata;
2420 CommandList_struct *c;
2422 struct request *creq;
2424 struct scatterlist tmp_sg[MAXSGENTRIES];
2425 drive_info_struct *drv;
2428 /* We call start_io here in case there is a command waiting on the
2429 * queue that has not been sent.
2431 if (blk_queue_plugged(q))
2435 creq = elv_next_request(q);
2439 BUG_ON(creq->nr_phys_segments > MAXSGENTRIES);
2441 if ((c = cmd_alloc(h, 1)) == NULL)
2444 blkdev_dequeue_request(creq);
2446 spin_unlock_irq(q->queue_lock);
2448 c->cmd_type = CMD_RWREQ;
2451 /* fill in the request */
2452 drv = creq->rq_disk->private_data;
2453 c->Header.ReplyQueue = 0; // unused in simple mode
2454 /* got command from pool, so use the command block index instead */
2455 /* for direct lookups. */
2456 /* The first 2 bits are reserved for controller error reporting. */
2457 c->Header.Tag.lower = (c->cmdindex << 3);
2458 c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */
2459 c->Header.LUN.LogDev.VolId = drv->LunID;
2460 c->Header.LUN.LogDev.Mode = 1;
2461 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2462 c->Request.Type.Type = TYPE_CMD; // It is a command.
2463 c->Request.Type.Attribute = ATTR_SIMPLE;
2464 c->Request.Type.Direction =
2465 (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE;
2466 c->Request.Timeout = 0; // Don't time out
2468 (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2469 start_blk = creq->sector;
2471 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector,
2472 (int)creq->nr_sectors);
2473 #endif /* CCISS_DEBUG */
2475 seg = blk_rq_map_sg(q, creq, tmp_sg);
2477 /* get the DMA records for the setup */
2478 if (c->Request.Type.Direction == XFER_READ)
2479 dir = PCI_DMA_FROMDEVICE;
2481 dir = PCI_DMA_TODEVICE;
2483 for (i = 0; i < seg; i++) {
2484 c->SG[i].Len = tmp_sg[i].length;
2485 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2487 tmp_sg[i].length, dir);
2488 c->SG[i].Addr.lower = temp64.val32.lower;
2489 c->SG[i].Addr.upper = temp64.val32.upper;
2490 c->SG[i].Ext = 0; // we are not chaining
2492 /* track how many SG entries we are using */
2497 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n",
2498 creq->nr_sectors, seg);
2499 #endif /* CCISS_DEBUG */
2501 c->Header.SGList = c->Header.SGTotal = seg;
2502 c->Request.CDB[1] = 0;
2503 c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB
2504 c->Request.CDB[3] = (start_blk >> 16) & 0xff;
2505 c->Request.CDB[4] = (start_blk >> 8) & 0xff;
2506 c->Request.CDB[5] = start_blk & 0xff;
2507 c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB
2508 c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff;
2509 c->Request.CDB[8] = creq->nr_sectors & 0xff;
2510 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2512 spin_lock_irq(q->queue_lock);
2514 addQ(&(h->reqQ), c);
2516 if (h->Qdepth > h->maxQsinceinit)
2517 h->maxQsinceinit = h->Qdepth;
2523 /* We will already have the driver lock here so not need
2529 static inline unsigned long get_next_completion(ctlr_info_t *h)
2531 #ifdef CONFIG_CISS_SCSI_TAPE
2532 /* Any rejects from sendcmd() lying around? Process them first */
2533 if (h->scsi_rejects.ncompletions == 0)
2534 return h->access.command_completed(h);
2536 struct sendcmd_reject_list *srl;
2538 srl = &h->scsi_rejects;
2539 n = --srl->ncompletions;
2540 /* printk("cciss%d: processing saved reject\n", h->ctlr); */
2542 return srl->complete[n];
2545 return h->access.command_completed(h);
2549 static inline int interrupt_pending(ctlr_info_t *h)
2551 #ifdef CONFIG_CISS_SCSI_TAPE
2552 return (h->access.intr_pending(h)
2553 || (h->scsi_rejects.ncompletions > 0));
2555 return h->access.intr_pending(h);
2559 static inline long interrupt_not_for_us(ctlr_info_t *h)
2561 #ifdef CONFIG_CISS_SCSI_TAPE
2562 return (((h->access.intr_pending(h) == 0) ||
2563 (h->interrupts_enabled == 0))
2564 && (h->scsi_rejects.ncompletions == 0));
2566 return (((h->access.intr_pending(h) == 0) ||
2567 (h->interrupts_enabled == 0)));
2571 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2573 ctlr_info_t *h = dev_id;
2574 CommandList_struct *c;
2575 unsigned long flags;
2578 if (interrupt_not_for_us(h))
2581 * If there are completed commands in the completion queue,
2582 * we had better do something about it.
2584 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2585 while (interrupt_pending(h)) {
2586 while ((a = get_next_completion(h)) != FIFO_EMPTY) {
2590 if (a2 >= NR_CMDS) {
2592 "cciss: controller cciss%d failed, stopping.\n",
2594 fail_all_cmds(h->ctlr);
2598 c = h->cmd_pool + a2;
2603 if ((c = h->cmpQ) == NULL) {
2605 "cciss: Completion of %08x ignored\n",
2609 while (c->busaddr != a) {
2616 * If we've found the command, take it off the
2617 * completion Q and free it
2619 if (c->busaddr == a) {
2620 removeQ(&h->cmpQ, c);
2621 if (c->cmd_type == CMD_RWREQ) {
2622 complete_command(h, c, 0);
2623 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2624 complete(c->waiting);
2626 # ifdef CONFIG_CISS_SCSI_TAPE
2627 else if (c->cmd_type == CMD_SCSI)
2628 complete_scsi_command(c, 0, a1);
2635 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2640 * We cannot read the structure directly, for portability we must use
2642 * This is for debug only.
2645 static void print_cfg_table(CfgTable_struct *tb)
2650 printk("Controller Configuration information\n");
2651 printk("------------------------------------\n");
2652 for (i = 0; i < 4; i++)
2653 temp_name[i] = readb(&(tb->Signature[i]));
2654 temp_name[4] = '\0';
2655 printk(" Signature = %s\n", temp_name);
2656 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2657 printk(" Transport methods supported = 0x%x\n",
2658 readl(&(tb->TransportSupport)));
2659 printk(" Transport methods active = 0x%x\n",
2660 readl(&(tb->TransportActive)));
2661 printk(" Requested transport Method = 0x%x\n",
2662 readl(&(tb->HostWrite.TransportRequest)));
2663 printk(" Coalesce Interrupt Delay = 0x%x\n",
2664 readl(&(tb->HostWrite.CoalIntDelay)));
2665 printk(" Coalesce Interrupt Count = 0x%x\n",
2666 readl(&(tb->HostWrite.CoalIntCount)));
2667 printk(" Max outstanding commands = 0x%d\n",
2668 readl(&(tb->CmdsOutMax)));
2669 printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
2670 for (i = 0; i < 16; i++)
2671 temp_name[i] = readb(&(tb->ServerName[i]));
2672 temp_name[16] = '\0';
2673 printk(" Server Name = %s\n", temp_name);
2674 printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat)));
2676 #endif /* CCISS_DEBUG */
2678 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
2680 int i, offset, mem_type, bar_type;
2681 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2684 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
2685 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
2686 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2689 mem_type = pci_resource_flags(pdev, i) &
2690 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2692 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2693 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2694 offset += 4; /* 32 bit */
2696 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2699 default: /* reserved in PCI 2.2 */
2701 "Base address is invalid\n");
2706 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2712 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
2713 * controllers that are capable. If not, we use IO-APIC mode.
2716 static void __devinit cciss_interrupt_mode(ctlr_info_t *c,
2717 struct pci_dev *pdev, __u32 board_id)
2719 #ifdef CONFIG_PCI_MSI
2721 struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1},
2725 /* Some boards advertise MSI but don't really support it */
2726 if ((board_id == 0x40700E11) ||
2727 (board_id == 0x40800E11) ||
2728 (board_id == 0x40820E11) || (board_id == 0x40830E11))
2729 goto default_int_mode;
2731 if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) {
2732 err = pci_enable_msix(pdev, cciss_msix_entries, 4);
2734 c->intr[0] = cciss_msix_entries[0].vector;
2735 c->intr[1] = cciss_msix_entries[1].vector;
2736 c->intr[2] = cciss_msix_entries[2].vector;
2737 c->intr[3] = cciss_msix_entries[3].vector;
2742 printk(KERN_WARNING "cciss: only %d MSI-X vectors "
2743 "available\n", err);
2745 printk(KERN_WARNING "cciss: MSI-X init failed %d\n",
2749 if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) {
2750 if (!pci_enable_msi(pdev)) {
2751 c->intr[SIMPLE_MODE_INT] = pdev->irq;
2755 printk(KERN_WARNING "cciss: MSI init failed\n");
2756 c->intr[SIMPLE_MODE_INT] = pdev->irq;
2761 #endif /* CONFIG_PCI_MSI */
2762 /* if we get here we're going to use the default interrupt mode */
2763 c->intr[SIMPLE_MODE_INT] = pdev->irq;
2767 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2769 ushort subsystem_vendor_id, subsystem_device_id, command;
2770 __u32 board_id, scratchpad = 0;
2772 __u32 cfg_base_addr;
2773 __u64 cfg_base_addr_index;
2776 /* check to see if controller has been disabled */
2777 /* BEFORE trying to enable it */
2778 (void)pci_read_config_word(pdev, PCI_COMMAND, &command);
2779 if (!(command & 0x02)) {
2781 "cciss: controller appears to be disabled\n");
2785 err = pci_enable_device(pdev);
2787 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2791 err = pci_request_regions(pdev, "cciss");
2793 printk(KERN_ERR "cciss: Cannot obtain PCI resources, "
2795 goto err_out_disable_pdev;
2798 subsystem_vendor_id = pdev->subsystem_vendor;
2799 subsystem_device_id = pdev->subsystem_device;
2800 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2801 subsystem_vendor_id);
2804 printk("command = %x\n", command);
2805 printk("irq = %x\n", pdev->irq);
2806 printk("board_id = %x\n", board_id);
2807 #endif /* CCISS_DEBUG */
2809 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
2810 * else we use the IO-APIC interrupt assigned to us by system ROM.
2812 cciss_interrupt_mode(c, pdev, board_id);
2815 * Memory base addr is first addr , the second points to the config
2819 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2821 printk("address 0 = %x\n", c->paddr);
2822 #endif /* CCISS_DEBUG */
2823 c->vaddr = remap_pci_mem(c->paddr, 200);
2825 /* Wait for the board to become ready. (PCI hotplug needs this.)
2826 * We poll for up to 120 secs, once per 100ms. */
2827 for (i = 0; i < 1200; i++) {
2828 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2829 if (scratchpad == CCISS_FIRMWARE_READY)
2831 set_current_state(TASK_INTERRUPTIBLE);
2832 schedule_timeout(HZ / 10); /* wait 100ms */
2834 if (scratchpad != CCISS_FIRMWARE_READY) {
2835 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2837 goto err_out_free_res;
2840 /* get the address index number */
2841 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2842 cfg_base_addr &= (__u32) 0x0000ffff;
2844 printk("cfg base address = %x\n", cfg_base_addr);
2845 #endif /* CCISS_DEBUG */
2846 cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr);
2848 printk("cfg base address index = %x\n", cfg_base_addr_index);
2849 #endif /* CCISS_DEBUG */
2850 if (cfg_base_addr_index == -1) {
2851 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2853 goto err_out_free_res;
2856 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2858 printk("cfg offset = %x\n", cfg_offset);
2859 #endif /* CCISS_DEBUG */
2860 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
2861 cfg_base_addr_index) +
2862 cfg_offset, sizeof(CfgTable_struct));
2863 c->board_id = board_id;
2866 print_cfg_table(c->cfgtable);
2867 #endif /* CCISS_DEBUG */
2869 for (i = 0; i < ARRAY_SIZE(products); i++) {
2870 if (board_id == products[i].board_id) {
2871 c->product_name = products[i].product_name;
2872 c->access = *(products[i].access);
2876 if (i == ARRAY_SIZE(products)) {
2877 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2878 " to access the Smart Array controller %08lx\n",
2879 (unsigned long)board_id);
2881 goto err_out_free_res;
2883 if ((readb(&c->cfgtable->Signature[0]) != 'C') ||
2884 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2885 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2886 (readb(&c->cfgtable->Signature[3]) != 'S')) {
2887 printk("Does not appear to be a valid CISS config table\n");
2889 goto err_out_free_res;
2893 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2895 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2897 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2902 printk("Trying to put board into Simple mode\n");
2903 #endif /* CCISS_DEBUG */
2904 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2905 /* Update the field, and then ring the doorbell */
2906 writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest));
2907 writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2909 /* under certain very rare conditions, this can take awhile.
2910 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2911 * as we enter this code.) */
2912 for (i = 0; i < MAX_CONFIG_WAIT; i++) {
2913 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2915 /* delay and try again */
2916 set_current_state(TASK_INTERRUPTIBLE);
2917 schedule_timeout(10);
2921 printk(KERN_DEBUG "I counter got to %d %x\n", i,
2922 readl(c->vaddr + SA5_DOORBELL));
2923 #endif /* CCISS_DEBUG */
2925 print_cfg_table(c->cfgtable);
2926 #endif /* CCISS_DEBUG */
2928 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
2929 printk(KERN_WARNING "cciss: unable to get board into"
2932 goto err_out_free_res;
2937 pci_release_regions(pdev);
2939 err_out_disable_pdev:
2940 pci_disable_device(pdev);
2945 * Gets information about the local volumes attached to the controller.
2947 static void cciss_getgeometry(int cntl_num)
2949 ReportLunData_struct *ld_buff;
2950 ReadCapdata_struct *size_buff;
2951 InquiryData_struct *inq_buff;
2959 ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2960 if (ld_buff == NULL) {
2961 printk(KERN_ERR "cciss: out of memory\n");
2964 size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
2965 if (size_buff == NULL) {
2966 printk(KERN_ERR "cciss: out of memory\n");
2970 inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
2971 if (inq_buff == NULL) {
2972 printk(KERN_ERR "cciss: out of memory\n");
2977 /* Get the firmware version */
2978 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2979 sizeof(InquiryData_struct), 0, 0, 0, NULL,
2981 if (return_code == IO_OK) {
2982 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2983 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2984 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2985 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2986 } else { /* send command failed */
2988 printk(KERN_WARNING "cciss: unable to determine firmware"
2989 " version of controller\n");
2991 /* Get the number of logical volumes */
2992 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2993 sizeof(ReportLunData_struct), 0, 0, 0, NULL,
2996 if (return_code == IO_OK) {
2998 printk("LUN Data\n--------------------------\n");
2999 #endif /* CCISS_DEBUG */
3002 (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
3004 (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
3006 (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
3007 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
3008 } else { /* reading number of logical volumes failed */
3010 printk(KERN_WARNING "cciss: report logical volume"
3011 " command failed\n");
3014 hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
3015 if (hba[cntl_num]->num_luns > CISS_MAX_LUN) {
3017 "ciss: only %d number of logical volumes supported\n",
3019 hba[cntl_num]->num_luns = CISS_MAX_LUN;
3022 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n",
3023 ld_buff->LUNListLength[0], ld_buff->LUNListLength[1],
3024 ld_buff->LUNListLength[2], ld_buff->LUNListLength[3],
3025 hba[cntl_num]->num_luns);
3026 #endif /* CCISS_DEBUG */
3028 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1;
3029 // for(i=0; i< hba[cntl_num]->num_luns; i++)
3030 for (i = 0; i < CISS_MAX_LUN; i++) {
3031 if (i < hba[cntl_num]->num_luns) {
3032 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3]))
3034 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2]))
3036 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1]))
3038 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
3040 hba[cntl_num]->drv[i].LunID = lunid;
3043 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
3044 ld_buff->LUN[i][0], ld_buff->LUN[i][1],
3045 ld_buff->LUN[i][2], ld_buff->LUN[i][3],
3046 hba[cntl_num]->drv[i].LunID);
3047 #endif /* CCISS_DEBUG */
3048 cciss_read_capacity(cntl_num, i, size_buff, 0,
3049 &total_size, &block_size);
3050 cciss_geometry_inquiry(cntl_num, i, 0, total_size,
3051 block_size, inq_buff,
3052 &hba[cntl_num]->drv[i]);
3054 /* initialize raid_level to indicate a free space */
3055 hba[cntl_num]->drv[i].raid_level = -1;
3063 /* Function to find the first free pointer into our hba[] array */
3064 /* Returns -1 if no free entries are left. */
3065 static int alloc_cciss_hba(void)
3067 struct gendisk *disk[NWD];
3069 for (n = 0; n < NWD; n++) {
3070 disk[n] = alloc_disk(1 << NWD_SHIFT);
3075 for (i = 0; i < MAX_CTLR; i++) {
3078 p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL);
3081 for (n = 0; n < NWD; n++)
3082 p->gendisk[n] = disk[n];
3087 printk(KERN_WARNING "cciss: This driver supports a maximum"
3088 " of %d controllers.\n", MAX_CTLR);
3091 printk(KERN_ERR "cciss: out of memory.\n");
3098 static void free_hba(int i)
3100 ctlr_info_t *p = hba[i];
3104 for (n = 0; n < NWD; n++)
3105 put_disk(p->gendisk[n]);
3110 * This is it. Find all the controllers and register them. I really hate
3111 * stealing all these major device numbers.
3112 * returns the number of block devices registered.
3114 static int __devinit cciss_init_one(struct pci_dev *pdev,
3115 const struct pci_device_id *ent)
3123 i = alloc_cciss_hba();
3127 hba[i]->busy_initializing = 1;
3129 if (cciss_pci_init(hba[i], pdev) != 0)
3132 sprintf(hba[i]->devname, "cciss%d", i);
3134 hba[i]->pdev = pdev;
3136 /* configure PCI DMA stuff */
3137 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
3139 else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
3142 printk(KERN_ERR "cciss: no suitable DMA available\n");
3147 * register with the major number, or get a dynamic major number
3148 * by passing 0 as argument. This is done for greater than
3149 * 8 controller support.
3151 if (i < MAX_CTLR_ORIG)
3152 hba[i]->major = COMPAQ_CISS_MAJOR + i;
3153 rc = register_blkdev(hba[i]->major, hba[i]->devname);
3154 if (rc == -EBUSY || rc == -EINVAL) {
3156 "cciss: Unable to get major number %d for %s "
3157 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
3160 if (i >= MAX_CTLR_ORIG)
3164 /* make sure the board interrupts are off */
3165 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
3166 if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr,
3167 IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) {
3168 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
3169 hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname);
3173 printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
3174 hba[i]->devname, pdev->device, pci_name(pdev),
3175 hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not");
3177 hba[i]->cmd_pool_bits =
3178 kmalloc(((NR_CMDS + BITS_PER_LONG -
3179 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL);
3180 hba[i]->cmd_pool = (CommandList_struct *)
3181 pci_alloc_consistent(hba[i]->pdev,
3182 NR_CMDS * sizeof(CommandList_struct),
3183 &(hba[i]->cmd_pool_dhandle));
3184 hba[i]->errinfo_pool = (ErrorInfo_struct *)
3185 pci_alloc_consistent(hba[i]->pdev,
3186 NR_CMDS * sizeof(ErrorInfo_struct),
3187 &(hba[i]->errinfo_pool_dhandle));
3188 if ((hba[i]->cmd_pool_bits == NULL)
3189 || (hba[i]->cmd_pool == NULL)
3190 || (hba[i]->errinfo_pool == NULL)) {
3191 printk(KERN_ERR "cciss: out of memory");
3194 #ifdef CONFIG_CISS_SCSI_TAPE
3195 hba[i]->scsi_rejects.complete =
3196 kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) *
3197 (NR_CMDS + 5), GFP_KERNEL);
3198 if (hba[i]->scsi_rejects.complete == NULL) {
3199 printk(KERN_ERR "cciss: out of memory");
3203 spin_lock_init(&hba[i]->lock);
3205 /* Initialize the pdev driver private data.
3206 have it point to hba[i]. */
3207 pci_set_drvdata(pdev, hba[i]);
3208 /* command and error info recs zeroed out before
3210 memset(hba[i]->cmd_pool_bits, 0,
3211 ((NR_CMDS + BITS_PER_LONG -
3212 1) / BITS_PER_LONG) * sizeof(unsigned long));
3215 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n", i);
3216 #endif /* CCISS_DEBUG */
3218 cciss_getgeometry(i);
3220 cciss_scsi_setup(i);
3222 /* Turn the interrupts on so we can service requests */
3223 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
3226 hba[i]->busy_initializing = 0;
3228 for (j = 0; j < NWD; j++) { /* mfm */
3229 drive_info_struct *drv = &(hba[i]->drv[j]);
3230 struct gendisk *disk = hba[i]->gendisk[j];
3232 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
3235 "cciss: unable to allocate queue for disk %d\n",
3241 q->backing_dev_info.ra_pages = READ_AHEAD;
3242 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
3244 /* This is a hardware imposed limit. */
3245 blk_queue_max_hw_segments(q, MAXSGENTRIES);
3247 /* This is a limit in the driver and could be eliminated. */
3248 blk_queue_max_phys_segments(q, MAXSGENTRIES);
3250 blk_queue_max_sectors(q, 512);
3252 blk_queue_softirq_done(q, cciss_softirq_done);
3254 q->queuedata = hba[i];
3255 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
3256 disk->major = hba[i]->major;
3257 disk->first_minor = j << NWD_SHIFT;
3258 disk->fops = &cciss_fops;
3260 disk->private_data = drv;
3261 disk->driverfs_dev = &pdev->dev;
3262 /* we must register the controller even if no disks exist */
3263 /* this is for the online array utilities */
3264 if (!drv->heads && j)
3266 blk_queue_hardsect_size(q, drv->block_size);
3267 set_capacity(disk, drv->nr_blocks);
3274 #ifdef CONFIG_CISS_SCSI_TAPE
3275 kfree(hba[i]->scsi_rejects.complete);
3277 kfree(hba[i]->cmd_pool_bits);
3278 if (hba[i]->cmd_pool)
3279 pci_free_consistent(hba[i]->pdev,
3280 NR_CMDS * sizeof(CommandList_struct),
3281 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3282 if (hba[i]->errinfo_pool)
3283 pci_free_consistent(hba[i]->pdev,
3284 NR_CMDS * sizeof(ErrorInfo_struct),
3285 hba[i]->errinfo_pool,
3286 hba[i]->errinfo_pool_dhandle);
3287 free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]);
3289 unregister_blkdev(hba[i]->major, hba[i]->devname);
3291 hba[i]->busy_initializing = 0;
3296 static void __devexit cciss_remove_one(struct pci_dev *pdev)
3298 ctlr_info_t *tmp_ptr;
3303 if (pci_get_drvdata(pdev) == NULL) {
3304 printk(KERN_ERR "cciss: Unable to remove device \n");
3307 tmp_ptr = pci_get_drvdata(pdev);
3309 if (hba[i] == NULL) {
3310 printk(KERN_ERR "cciss: device appears to "
3311 "already be removed \n");
3314 /* Turn board interrupts off and send the flush cache command */
3315 /* sendcmd will turn off interrupt, and send the flush...
3316 * To write all data in the battery backed cache to disks */
3317 memset(flush_buf, 0, 4);
3318 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
3320 if (return_code != IO_OK) {
3321 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
3324 free_irq(hba[i]->intr[2], hba[i]);
3326 #ifdef CONFIG_PCI_MSI
3327 if (hba[i]->msix_vector)
3328 pci_disable_msix(hba[i]->pdev);
3329 else if (hba[i]->msi_vector)
3330 pci_disable_msi(hba[i]->pdev);
3331 #endif /* CONFIG_PCI_MSI */
3333 iounmap(hba[i]->vaddr);
3334 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
3335 unregister_blkdev(hba[i]->major, hba[i]->devname);
3336 remove_proc_entry(hba[i]->devname, proc_cciss);
3338 /* remove it from the disk list */
3339 for (j = 0; j < NWD; j++) {
3340 struct gendisk *disk = hba[i]->gendisk[j];
3342 request_queue_t *q = disk->queue;
3344 if (disk->flags & GENHD_FL_UP)
3347 blk_cleanup_queue(q);
3351 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
3352 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3353 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(ErrorInfo_struct),
3354 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
3355 kfree(hba[i]->cmd_pool_bits);
3356 #ifdef CONFIG_CISS_SCSI_TAPE
3357 kfree(hba[i]->scsi_rejects.complete);
3359 pci_release_regions(pdev);
3360 pci_disable_device(pdev);
3361 pci_set_drvdata(pdev, NULL);
3365 static struct pci_driver cciss_pci_driver = {
3367 .probe = cciss_init_one,
3368 .remove = __devexit_p(cciss_remove_one),
3369 .id_table = cciss_pci_device_id, /* id_table */
3373 * This is it. Register the PCI driver information for the cards we control
3374 * the OS will call our registered routines when it finds one of our cards.
3376 static int __init cciss_init(void)
3378 printk(KERN_INFO DRIVER_NAME "\n");
3380 /* Register for our PCI devices */
3381 return pci_register_driver(&cciss_pci_driver);
3384 static void __exit cciss_cleanup(void)
3388 pci_unregister_driver(&cciss_pci_driver);
3389 /* double check that all controller entrys have been removed */
3390 for (i = 0; i < MAX_CTLR; i++) {
3391 if (hba[i] != NULL) {
3392 printk(KERN_WARNING "cciss: had to remove"
3393 " controller %d\n", i);
3394 cciss_remove_one(hba[i]->pdev);
3397 remove_proc_entry("cciss", proc_root_driver);
3400 static void fail_all_cmds(unsigned long ctlr)
3402 /* If we get here, the board is apparently dead. */
3403 ctlr_info_t *h = hba[ctlr];
3404 CommandList_struct *c;
3405 unsigned long flags;
3407 printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr);
3408 h->alive = 0; /* the controller apparently died... */
3410 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
3412 pci_disable_device(h->pdev); /* Make sure it is really dead. */
3414 /* move everything off the request queue onto the completed queue */
3415 while ((c = h->reqQ) != NULL) {
3416 removeQ(&(h->reqQ), c);
3418 addQ(&(h->cmpQ), c);
3421 /* Now, fail everything on the completed queue with a HW error */
3422 while ((c = h->cmpQ) != NULL) {
3423 removeQ(&h->cmpQ, c);
3424 c->err_info->CommandStatus = CMD_HARDWARE_ERR;
3425 if (c->cmd_type == CMD_RWREQ) {
3426 complete_command(h, c, 0);
3427 } else if (c->cmd_type == CMD_IOCTL_PEND)
3428 complete(c->waiting);
3429 #ifdef CONFIG_CISS_SCSI_TAPE
3430 else if (c->cmd_type == CMD_SCSI)
3431 complete_scsi_command(c, 0, 0);
3434 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
3438 module_init(cciss_init);
3439 module_exit(cciss_cleanup);