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/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/init.h>
37 #include <linux/hdreg.h>
38 #include <linux/spinlock.h>
39 #include <linux/compat.h>
40 #include <linux/blktrace_api.h>
41 #include <asm/uaccess.h>
44 #include <linux/dma-mapping.h>
45 #include <linux/blkdev.h>
46 #include <linux/genhd.h>
47 #include <linux/completion.h>
49 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
50 #define DRIVER_NAME "HP CISS Driver (v 3.6.10)"
51 #define DRIVER_VERSION CCISS_DRIVER_VERSION(3,6,10)
53 /* Embedded module documentation macros - see modules.h */
54 MODULE_AUTHOR("Hewlett-Packard Company");
55 MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 3.6.10");
56 MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
57 " SA6i P600 P800 P400 P400i E200 E200i E500");
58 MODULE_LICENSE("GPL");
59 MODULE_VERSION("2.6.8");
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_ONSTACK(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_ONSTACK(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 blk_finished_io(len);
1233 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
1238 static void cciss_check_queues(ctlr_info_t *h)
1240 int start_queue = h->next_to_run;
1243 /* check to see if we have maxed out the number of commands that can
1244 * be placed on the queue. If so then exit. We do this check here
1245 * in case the interrupt we serviced was from an ioctl and did not
1246 * free any new commands.
1248 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
1251 /* We have room on the queue for more commands. Now we need to queue
1252 * them up. We will also keep track of the next queue to run so
1253 * that every queue gets a chance to be started first.
1255 for (i = 0; i < h->highest_lun + 1; i++) {
1256 int curr_queue = (start_queue + i) % (h->highest_lun + 1);
1257 /* make sure the disk has been added and the drive is real
1258 * because this can be called from the middle of init_one.
1260 if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads))
1262 blk_start_queue(h->gendisk[curr_queue]->queue);
1264 /* check to see if we have maxed out the number of commands
1265 * that can be placed on the queue.
1267 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) {
1268 if (curr_queue == start_queue) {
1270 (start_queue + 1) % (h->highest_lun + 1);
1273 h->next_to_run = curr_queue;
1277 curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
1282 static void cciss_softirq_done(struct request *rq)
1284 CommandList_struct *cmd = rq->completion_data;
1285 ctlr_info_t *h = hba[cmd->ctlr];
1286 unsigned long flags;
1290 if (cmd->Request.Type.Direction == XFER_READ)
1291 ddir = PCI_DMA_FROMDEVICE;
1293 ddir = PCI_DMA_TODEVICE;
1295 /* command did not need to be retried */
1296 /* unmap the DMA mapping for all the scatter gather elements */
1297 for (i = 0; i < cmd->Header.SGList; i++) {
1298 temp64.val32.lower = cmd->SG[i].Addr.lower;
1299 temp64.val32.upper = cmd->SG[i].Addr.upper;
1300 pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir);
1303 complete_buffers(rq->bio, rq->errors);
1305 if (blk_fs_request(rq)) {
1306 const int rw = rq_data_dir(rq);
1308 disk_stat_add(rq->rq_disk, sectors[rw], rq->nr_sectors);
1312 printk("Done with %p\n", rq);
1313 #endif /* CCISS_DEBUG */
1315 add_disk_randomness(rq->rq_disk);
1316 spin_lock_irqsave(&h->lock, flags);
1317 end_that_request_last(rq, rq->errors);
1318 cmd_free(h, cmd, 1);
1319 cciss_check_queues(h);
1320 spin_unlock_irqrestore(&h->lock, flags);
1323 /* This function will check the usage_count of the drive to be updated/added.
1324 * If the usage_count is zero then the drive information will be updated and
1325 * the disk will be re-registered with the kernel. If not then it will be
1326 * left alone for the next reboot. The exception to this is disk 0 which
1327 * will always be left registered with the kernel since it is also the
1328 * controller node. Any changes to disk 0 will show up on the next
1331 static void cciss_update_drive_info(int ctlr, int drv_index)
1333 ctlr_info_t *h = hba[ctlr];
1334 struct gendisk *disk;
1335 ReadCapdata_struct *size_buff = NULL;
1336 InquiryData_struct *inq_buff = NULL;
1337 unsigned int block_size;
1338 unsigned int total_size;
1339 unsigned long flags = 0;
1342 /* if the disk already exists then deregister it before proceeding */
1343 if (h->drv[drv_index].raid_level != -1) {
1344 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1345 h->drv[drv_index].busy_configuring = 1;
1346 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1347 ret = deregister_disk(h->gendisk[drv_index],
1348 &h->drv[drv_index], 0);
1349 h->drv[drv_index].busy_configuring = 0;
1352 /* If the disk is in use return */
1356 /* Get information about the disk and modify the driver structure */
1357 size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
1358 if (size_buff == NULL)
1360 inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
1361 if (inq_buff == NULL)
1364 cciss_read_capacity(ctlr, drv_index, size_buff, 1,
1365 &total_size, &block_size);
1366 cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
1367 inq_buff, &h->drv[drv_index]);
1370 disk = h->gendisk[drv_index];
1371 set_capacity(disk, h->drv[drv_index].nr_blocks);
1373 /* if it's the controller it's already added */
1375 disk->queue = blk_init_queue(do_cciss_request, &h->lock);
1377 /* Set up queue information */
1378 disk->queue->backing_dev_info.ra_pages = READ_AHEAD;
1379 blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask);
1381 /* This is a hardware imposed limit. */
1382 blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES);
1384 /* This is a limit in the driver and could be eliminated. */
1385 blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES);
1387 blk_queue_max_sectors(disk->queue, 512);
1389 blk_queue_softirq_done(disk->queue, cciss_softirq_done);
1391 disk->queue->queuedata = hba[ctlr];
1393 blk_queue_hardsect_size(disk->queue,
1394 hba[ctlr]->drv[drv_index].block_size);
1396 h->drv[drv_index].queue = disk->queue;
1405 printk(KERN_ERR "cciss: out of memory\n");
1409 /* This function will find the first index of the controllers drive array
1410 * that has a -1 for the raid_level and will return that index. This is
1411 * where new drives will be added. If the index to be returned is greater
1412 * than the highest_lun index for the controller then highest_lun is set
1413 * to this new index. If there are no available indexes then -1 is returned.
1415 static int cciss_find_free_drive_index(int ctlr)
1419 for (i = 0; i < CISS_MAX_LUN; i++) {
1420 if (hba[ctlr]->drv[i].raid_level == -1) {
1421 if (i > hba[ctlr]->highest_lun)
1422 hba[ctlr]->highest_lun = i;
1429 /* This function will add and remove logical drives from the Logical
1430 * drive array of the controller and maintain persistency of ordering
1431 * so that mount points are preserved until the next reboot. This allows
1432 * for the removal of logical drives in the middle of the drive array
1433 * without a re-ordering of those drives.
1435 * h = The controller to perform the operations on
1436 * del_disk = The disk to remove if specified. If the value given
1437 * is NULL then no disk is removed.
1439 static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk)
1443 ReportLunData_struct *ld_buff = NULL;
1444 drive_info_struct *drv = NULL;
1451 unsigned long flags;
1453 /* Set busy_configuring flag for this operation */
1454 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1455 if (h->num_luns >= CISS_MAX_LUN) {
1456 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1460 if (h->busy_configuring) {
1461 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1464 h->busy_configuring = 1;
1466 /* if del_disk is NULL then we are being called to add a new disk
1467 * and update the logical drive table. If it is not NULL then
1468 * we will check if the disk is in use or not.
1470 if (del_disk != NULL) {
1471 drv = get_drv(del_disk);
1472 drv->busy_configuring = 1;
1473 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1474 return_code = deregister_disk(del_disk, drv, 1);
1475 drv->busy_configuring = 0;
1476 h->busy_configuring = 0;
1479 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1480 if (!capable(CAP_SYS_RAWIO))
1483 ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1484 if (ld_buff == NULL)
1487 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1488 sizeof(ReportLunData_struct), 0,
1491 if (return_code == IO_OK) {
1493 (0xff & (unsigned int)(ld_buff->LUNListLength[0]))
1496 (0xff & (unsigned int)(ld_buff->LUNListLength[1]))
1499 (0xff & (unsigned int)(ld_buff->LUNListLength[2]))
1502 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1503 } else { /* reading number of logical volumes failed */
1504 printk(KERN_WARNING "cciss: report logical volume"
1505 " command failed\n");
1510 num_luns = listlength / 8; /* 8 bytes per entry */
1511 if (num_luns > CISS_MAX_LUN) {
1512 num_luns = CISS_MAX_LUN;
1513 printk(KERN_WARNING "cciss: more luns configured"
1514 " on controller than can be handled by"
1518 /* Compare controller drive array to drivers drive array.
1519 * Check for updates in the drive information and any new drives
1520 * on the controller.
1522 for (i = 0; i < num_luns; i++) {
1528 (unsigned int)(ld_buff->LUN[i][3])) << 24;
1530 (unsigned int)(ld_buff->LUN[i][2])) << 16;
1532 (unsigned int)(ld_buff->LUN[i][1])) << 8;
1533 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1535 /* Find if the LUN is already in the drive array
1536 * of the controller. If so then update its info
1537 * if not is use. If it does not exist then find
1538 * the first free index and add it.
1540 for (j = 0; j <= h->highest_lun; j++) {
1541 if (h->drv[j].LunID == lunid) {
1547 /* check if the drive was found already in the array */
1549 drv_index = cciss_find_free_drive_index(ctlr);
1550 if (drv_index == -1)
1554 h->drv[drv_index].LunID = lunid;
1555 cciss_update_drive_info(ctlr, drv_index);
1561 h->busy_configuring = 0;
1562 /* We return -1 here to tell the ACU that we have registered/updated
1563 * all of the drives that we can and to keep it from calling us
1568 printk(KERN_ERR "cciss: out of memory\n");
1572 /* This function will deregister the disk and it's queue from the
1573 * kernel. It must be called with the controller lock held and the
1574 * drv structures busy_configuring flag set. It's parameters are:
1576 * disk = This is the disk to be deregistered
1577 * drv = This is the drive_info_struct associated with the disk to be
1578 * deregistered. It contains information about the disk used
1580 * clear_all = This flag determines whether or not the disk information
1581 * is going to be completely cleared out and the highest_lun
1582 * reset. Sometimes we want to clear out information about
1583 * the disk in preparation for re-adding it. In this case
1584 * the highest_lun should be left unchanged and the LunID
1585 * should not be cleared.
1587 static int deregister_disk(struct gendisk *disk, drive_info_struct *drv,
1590 ctlr_info_t *h = get_host(disk);
1592 if (!capable(CAP_SYS_RAWIO))
1595 /* make sure logical volume is NOT is use */
1596 if (clear_all || (h->gendisk[0] == disk)) {
1597 if (drv->usage_count > 1)
1599 } else if (drv->usage_count > 0)
1602 /* invalidate the devices and deregister the disk. If it is disk
1603 * zero do not deregister it but just zero out it's values. This
1604 * allows us to delete disk zero but keep the controller registered.
1606 if (h->gendisk[0] != disk) {
1608 request_queue_t *q = disk->queue;
1609 if (disk->flags & GENHD_FL_UP)
1612 blk_cleanup_queue(q);
1619 /* zero out the disk size info */
1621 drv->block_size = 0;
1625 drv->raid_level = -1; /* This can be used as a flag variable to
1626 * indicate that this element of the drive
1631 /* check to see if it was the last disk */
1632 if (drv == h->drv + h->highest_lun) {
1633 /* if so, find the new hightest lun */
1634 int i, newhighest = -1;
1635 for (i = 0; i < h->highest_lun; i++) {
1636 /* if the disk has size > 0, it is available */
1637 if (h->drv[i].heads)
1640 h->highest_lun = newhighest;
1648 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,
1649 1: address logical volume log_unit,
1650 2: periph device address is scsi3addr */
1651 unsigned int log_unit, __u8 page_code,
1652 unsigned char *scsi3addr, int cmd_type)
1654 ctlr_info_t *h = hba[ctlr];
1655 u64bit buff_dma_handle;
1658 c->cmd_type = CMD_IOCTL_PEND;
1659 c->Header.ReplyQueue = 0;
1661 c->Header.SGList = 1;
1662 c->Header.SGTotal = 1;
1664 c->Header.SGList = 0;
1665 c->Header.SGTotal = 0;
1667 c->Header.Tag.lower = c->busaddr;
1669 c->Request.Type.Type = cmd_type;
1670 if (cmd_type == TYPE_CMD) {
1673 /* If the logical unit number is 0 then, this is going
1674 to controller so It's a physical command
1675 mode = 0 target = 0. So we have nothing to write.
1676 otherwise, if use_unit_num == 1,
1677 mode = 1(volume set addressing) target = LUNID
1678 otherwise, if use_unit_num == 2,
1679 mode = 0(periph dev addr) target = scsi3addr */
1680 if (use_unit_num == 1) {
1681 c->Header.LUN.LogDev.VolId =
1682 h->drv[log_unit].LunID;
1683 c->Header.LUN.LogDev.Mode = 1;
1684 } else if (use_unit_num == 2) {
1685 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr,
1687 c->Header.LUN.LogDev.Mode = 0;
1689 /* are we trying to read a vital product page */
1690 if (page_code != 0) {
1691 c->Request.CDB[1] = 0x01;
1692 c->Request.CDB[2] = page_code;
1694 c->Request.CDBLen = 6;
1695 c->Request.Type.Attribute = ATTR_SIMPLE;
1696 c->Request.Type.Direction = XFER_READ;
1697 c->Request.Timeout = 0;
1698 c->Request.CDB[0] = CISS_INQUIRY;
1699 c->Request.CDB[4] = size & 0xFF;
1701 case CISS_REPORT_LOG:
1702 case CISS_REPORT_PHYS:
1703 /* Talking to controller so It's a physical command
1704 mode = 00 target = 0. Nothing to write.
1706 c->Request.CDBLen = 12;
1707 c->Request.Type.Attribute = ATTR_SIMPLE;
1708 c->Request.Type.Direction = XFER_READ;
1709 c->Request.Timeout = 0;
1710 c->Request.CDB[0] = cmd;
1711 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1712 c->Request.CDB[7] = (size >> 16) & 0xFF;
1713 c->Request.CDB[8] = (size >> 8) & 0xFF;
1714 c->Request.CDB[9] = size & 0xFF;
1717 case CCISS_READ_CAPACITY:
1718 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1719 c->Header.LUN.LogDev.Mode = 1;
1720 c->Request.CDBLen = 10;
1721 c->Request.Type.Attribute = ATTR_SIMPLE;
1722 c->Request.Type.Direction = XFER_READ;
1723 c->Request.Timeout = 0;
1724 c->Request.CDB[0] = cmd;
1726 case CCISS_CACHE_FLUSH:
1727 c->Request.CDBLen = 12;
1728 c->Request.Type.Attribute = ATTR_SIMPLE;
1729 c->Request.Type.Direction = XFER_WRITE;
1730 c->Request.Timeout = 0;
1731 c->Request.CDB[0] = BMIC_WRITE;
1732 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1736 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
1739 } else if (cmd_type == TYPE_MSG) {
1741 case 0: /* ABORT message */
1742 c->Request.CDBLen = 12;
1743 c->Request.Type.Attribute = ATTR_SIMPLE;
1744 c->Request.Type.Direction = XFER_WRITE;
1745 c->Request.Timeout = 0;
1746 c->Request.CDB[0] = cmd; /* abort */
1747 c->Request.CDB[1] = 0; /* abort a command */
1748 /* buff contains the tag of the command to abort */
1749 memcpy(&c->Request.CDB[4], buff, 8);
1751 case 1: /* RESET message */
1752 c->Request.CDBLen = 12;
1753 c->Request.Type.Attribute = ATTR_SIMPLE;
1754 c->Request.Type.Direction = XFER_WRITE;
1755 c->Request.Timeout = 0;
1756 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
1757 c->Request.CDB[0] = cmd; /* reset */
1758 c->Request.CDB[1] = 0x04; /* reset a LUN */
1759 case 3: /* No-Op message */
1760 c->Request.CDBLen = 1;
1761 c->Request.Type.Attribute = ATTR_SIMPLE;
1762 c->Request.Type.Direction = XFER_WRITE;
1763 c->Request.Timeout = 0;
1764 c->Request.CDB[0] = cmd;
1768 "cciss%d: unknown message type %d\n", ctlr, cmd);
1773 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1776 /* Fill in the scatter gather information */
1778 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1780 PCI_DMA_BIDIRECTIONAL);
1781 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1782 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1783 c->SG[0].Len = size;
1784 c->SG[0].Ext = 0; /* we are not chaining */
1789 static int sendcmd_withirq(__u8 cmd,
1793 unsigned int use_unit_num,
1794 unsigned int log_unit, __u8 page_code, int cmd_type)
1796 ctlr_info_t *h = hba[ctlr];
1797 CommandList_struct *c;
1798 u64bit buff_dma_handle;
1799 unsigned long flags;
1801 DECLARE_COMPLETION_ONSTACK(wait);
1803 if ((c = cmd_alloc(h, 0)) == NULL)
1805 return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1806 log_unit, page_code, NULL, cmd_type);
1807 if (return_status != IO_OK) {
1809 return return_status;
1814 /* Put the request on the tail of the queue and send it */
1815 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1819 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1821 wait_for_completion(&wait);
1823 if (c->err_info->CommandStatus != 0) { /* an error has occurred */
1824 switch (c->err_info->CommandStatus) {
1825 case CMD_TARGET_STATUS:
1826 printk(KERN_WARNING "cciss: cmd %p has "
1827 " completed with errors\n", c);
1828 if (c->err_info->ScsiStatus) {
1829 printk(KERN_WARNING "cciss: cmd %p "
1830 "has SCSI Status = %x\n",
1831 c, c->err_info->ScsiStatus);
1835 case CMD_DATA_UNDERRUN:
1836 case CMD_DATA_OVERRUN:
1837 /* expected for inquire and report lun commands */
1840 printk(KERN_WARNING "cciss: Cmd %p is "
1841 "reported invalid\n", c);
1842 return_status = IO_ERROR;
1844 case CMD_PROTOCOL_ERR:
1845 printk(KERN_WARNING "cciss: cmd %p has "
1846 "protocol error \n", c);
1847 return_status = IO_ERROR;
1849 case CMD_HARDWARE_ERR:
1850 printk(KERN_WARNING "cciss: cmd %p had "
1851 " hardware error\n", c);
1852 return_status = IO_ERROR;
1854 case CMD_CONNECTION_LOST:
1855 printk(KERN_WARNING "cciss: cmd %p had "
1856 "connection lost\n", c);
1857 return_status = IO_ERROR;
1860 printk(KERN_WARNING "cciss: cmd %p was "
1862 return_status = IO_ERROR;
1864 case CMD_ABORT_FAILED:
1865 printk(KERN_WARNING "cciss: cmd %p reports "
1866 "abort failed\n", c);
1867 return_status = IO_ERROR;
1869 case CMD_UNSOLICITED_ABORT:
1871 "cciss%d: unsolicited abort %p\n", ctlr, c);
1872 if (c->retry_count < MAX_CMD_RETRIES) {
1874 "cciss%d: retrying %p\n", ctlr, c);
1876 /* erase the old error information */
1877 memset(c->err_info, 0,
1878 sizeof(ErrorInfo_struct));
1879 return_status = IO_OK;
1880 INIT_COMPLETION(wait);
1883 return_status = IO_ERROR;
1886 printk(KERN_WARNING "cciss: cmd %p returned "
1887 "unknown status %x\n", c,
1888 c->err_info->CommandStatus);
1889 return_status = IO_ERROR;
1892 /* unlock the buffers from DMA */
1893 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
1894 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
1895 pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val,
1896 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
1898 return return_status;
1901 static void cciss_geometry_inquiry(int ctlr, int logvol,
1902 int withirq, unsigned int total_size,
1903 unsigned int block_size,
1904 InquiryData_struct *inq_buff,
1905 drive_info_struct *drv)
1908 memset(inq_buff, 0, sizeof(InquiryData_struct));
1910 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1911 inq_buff, sizeof(*inq_buff), 1,
1912 logvol, 0xC1, TYPE_CMD);
1914 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1915 sizeof(*inq_buff), 1, logvol, 0xC1, NULL,
1917 if (return_code == IO_OK) {
1918 if (inq_buff->data_byte[8] == 0xFF) {
1920 "cciss: reading geometry failed, volume "
1921 "does not support reading geometry\n");
1922 drv->block_size = block_size;
1923 drv->nr_blocks = total_size;
1925 drv->sectors = 32; // Sectors per track
1926 drv->cylinders = total_size / 255 / 32;
1930 drv->block_size = block_size;
1931 drv->nr_blocks = total_size;
1932 drv->heads = inq_buff->data_byte[6];
1933 drv->sectors = inq_buff->data_byte[7];
1934 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1935 drv->cylinders += inq_buff->data_byte[5];
1936 drv->raid_level = inq_buff->data_byte[8];
1937 t = drv->heads * drv->sectors;
1939 drv->cylinders = total_size / t;
1942 } else { /* Get geometry failed */
1943 printk(KERN_WARNING "cciss: reading geometry failed\n");
1945 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
1946 drv->heads, drv->sectors, drv->cylinders);
1950 cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1951 int withirq, unsigned int *total_size,
1952 unsigned int *block_size)
1955 memset(buf, 0, sizeof(*buf));
1957 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1958 ctlr, buf, sizeof(*buf), 1,
1959 logvol, 0, TYPE_CMD);
1961 return_code = sendcmd(CCISS_READ_CAPACITY,
1962 ctlr, buf, sizeof(*buf), 1, logvol, 0,
1964 if (return_code == IO_OK) {
1966 be32_to_cpu(*((__be32 *) & buf->total_size[0])) + 1;
1967 *block_size = be32_to_cpu(*((__be32 *) & buf->block_size[0]));
1968 } else { /* read capacity command failed */
1969 printk(KERN_WARNING "cciss: read capacity failed\n");
1971 *block_size = BLOCK_SIZE;
1973 printk(KERN_INFO " blocks= %u block_size= %d\n",
1974 *total_size, *block_size);
1978 static int cciss_revalidate(struct gendisk *disk)
1980 ctlr_info_t *h = get_host(disk);
1981 drive_info_struct *drv = get_drv(disk);
1984 unsigned int block_size;
1985 unsigned int total_size;
1986 ReadCapdata_struct *size_buff = NULL;
1987 InquiryData_struct *inq_buff = NULL;
1989 for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) {
1990 if (h->drv[logvol].LunID == drv->LunID) {
1999 size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
2000 if (size_buff == NULL) {
2001 printk(KERN_WARNING "cciss: out of memory\n");
2004 inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
2005 if (inq_buff == NULL) {
2006 printk(KERN_WARNING "cciss: out of memory\n");
2011 cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size,
2013 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size,
2016 blk_queue_hardsect_size(drv->queue, drv->block_size);
2017 set_capacity(disk, drv->nr_blocks);
2025 * Wait polling for a command to complete.
2026 * The memory mapped FIFO is polled for the completion.
2027 * Used only at init time, interrupts from the HBA are disabled.
2029 static unsigned long pollcomplete(int ctlr)
2034 /* Wait (up to 20 seconds) for a command to complete */
2036 for (i = 20 * HZ; i > 0; i--) {
2037 done = hba[ctlr]->access.command_completed(hba[ctlr]);
2038 if (done == FIFO_EMPTY)
2039 schedule_timeout_uninterruptible(1);
2043 /* Invalid address to tell caller we ran out of time */
2047 static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete)
2049 /* We get in here if sendcmd() is polling for completions
2050 and gets some command back that it wasn't expecting --
2051 something other than that which it just sent down.
2052 Ordinarily, that shouldn't happen, but it can happen when
2053 the scsi tape stuff gets into error handling mode, and
2054 starts using sendcmd() to try to abort commands and
2055 reset tape drives. In that case, sendcmd may pick up
2056 completions of commands that were sent to logical drives
2057 through the block i/o system, or cciss ioctls completing, etc.
2058 In that case, we need to save those completions for later
2059 processing by the interrupt handler.
2062 #ifdef CONFIG_CISS_SCSI_TAPE
2063 struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects;
2065 /* If it's not the scsi tape stuff doing error handling, (abort */
2066 /* or reset) then we don't expect anything weird. */
2067 if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) {
2069 printk(KERN_WARNING "cciss cciss%d: SendCmd "
2070 "Invalid command list address returned! (%lx)\n",
2072 /* not much we can do. */
2073 #ifdef CONFIG_CISS_SCSI_TAPE
2077 /* We've sent down an abort or reset, but something else
2079 if (srl->ncompletions >= (NR_CMDS + 2)) {
2080 /* Uh oh. No room to save it for later... */
2081 printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, "
2082 "reject list overflow, command lost!\n", ctlr);
2085 /* Save it for later */
2086 srl->complete[srl->ncompletions] = complete;
2087 srl->ncompletions++;
2093 * Send a command to the controller, and wait for it to complete.
2094 * Only used at init time.
2096 static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller,
2097 1: address logical volume log_unit,
2098 2: periph device address is scsi3addr */
2099 unsigned int log_unit,
2100 __u8 page_code, unsigned char *scsi3addr, int cmd_type)
2102 CommandList_struct *c;
2104 unsigned long complete;
2105 ctlr_info_t *info_p = hba[ctlr];
2106 u64bit buff_dma_handle;
2107 int status, done = 0;
2109 if ((c = cmd_alloc(info_p, 1)) == NULL) {
2110 printk(KERN_WARNING "cciss: unable to get memory");
2113 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
2114 log_unit, page_code, scsi3addr, cmd_type);
2115 if (status != IO_OK) {
2116 cmd_free(info_p, c, 1);
2124 printk(KERN_DEBUG "cciss: turning intr off\n");
2125 #endif /* CCISS_DEBUG */
2126 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
2128 /* Make sure there is room in the command FIFO */
2129 /* Actually it should be completely empty at this time */
2130 /* unless we are in here doing error handling for the scsi */
2131 /* tape side of the driver. */
2132 for (i = 200000; i > 0; i--) {
2133 /* if fifo isn't full go */
2134 if (!(info_p->access.fifo_full(info_p))) {
2139 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
2140 " waiting!\n", ctlr);
2145 info_p->access.submit_command(info_p, c);
2148 complete = pollcomplete(ctlr);
2151 printk(KERN_DEBUG "cciss: command completed\n");
2152 #endif /* CCISS_DEBUG */
2154 if (complete == 1) {
2156 "cciss cciss%d: SendCmd Timeout out, "
2157 "No command list address returned!\n", ctlr);
2163 /* This will need to change for direct lookup completions */
2164 if ((complete & CISS_ERROR_BIT)
2165 && (complete & ~CISS_ERROR_BIT) == c->busaddr) {
2166 /* if data overrun or underun on Report command
2169 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
2170 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
2171 (c->Request.CDB[0] == CISS_INQUIRY)) &&
2172 ((c->err_info->CommandStatus ==
2173 CMD_DATA_OVERRUN) ||
2174 (c->err_info->CommandStatus == CMD_DATA_UNDERRUN)
2176 complete = c->busaddr;
2178 if (c->err_info->CommandStatus ==
2179 CMD_UNSOLICITED_ABORT) {
2180 printk(KERN_WARNING "cciss%d: "
2181 "unsolicited abort %p\n",
2183 if (c->retry_count < MAX_CMD_RETRIES) {
2185 "cciss%d: retrying %p\n",
2188 /* erase the old error */
2190 memset(c->err_info, 0,
2192 (ErrorInfo_struct));
2196 "cciss%d: retried %p too "
2197 "many times\n", ctlr, c);
2201 } else if (c->err_info->CommandStatus ==
2204 "cciss%d: command could not be aborted.\n",
2209 printk(KERN_WARNING "ciss ciss%d: sendcmd"
2210 " Error %x \n", ctlr,
2211 c->err_info->CommandStatus);
2212 printk(KERN_WARNING "ciss ciss%d: sendcmd"
2214 " size %x\n num %x value %x\n",
2216 c->err_info->MoreErrInfo.Invalid_Cmd.
2218 c->err_info->MoreErrInfo.Invalid_Cmd.
2220 c->err_info->MoreErrInfo.Invalid_Cmd.
2226 /* This will need changing for direct lookup completions */
2227 if (complete != c->busaddr) {
2228 if (add_sendcmd_reject(cmd, ctlr, complete) != 0) {
2229 BUG(); /* we are pretty much hosed if we get here. */
2237 /* unlock the data buffer from DMA */
2238 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
2239 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
2240 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
2241 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
2242 #ifdef CONFIG_CISS_SCSI_TAPE
2243 /* if we saved some commands for later, process them now. */
2244 if (info_p->scsi_rejects.ncompletions > 0)
2245 do_cciss_intr(0, info_p, NULL);
2247 cmd_free(info_p, c, 1);
2252 * Map (physical) PCI mem into (virtual) kernel space
2254 static void __iomem *remap_pci_mem(ulong base, ulong size)
2256 ulong page_base = ((ulong) base) & PAGE_MASK;
2257 ulong page_offs = ((ulong) base) - page_base;
2258 void __iomem *page_remapped = ioremap(page_base, page_offs + size);
2260 return page_remapped ? (page_remapped + page_offs) : NULL;
2264 * Takes jobs of the Q and sends them to the hardware, then puts it on
2265 * the Q to wait for completion.
2267 static void start_io(ctlr_info_t *h)
2269 CommandList_struct *c;
2271 while ((c = h->reqQ) != NULL) {
2272 /* can't do anything if fifo is full */
2273 if ((h->access.fifo_full(h))) {
2274 printk(KERN_WARNING "cciss: fifo full\n");
2278 /* Get the first entry from the Request Q */
2279 removeQ(&(h->reqQ), c);
2282 /* Tell the controller execute command */
2283 h->access.submit_command(h, c);
2285 /* Put job onto the completed Q */
2286 addQ(&(h->cmpQ), c);
2290 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
2291 /* Zeros out the error record and then resends the command back */
2292 /* to the controller */
2293 static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c)
2295 /* erase the old error information */
2296 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
2298 /* add it to software queue and then send it to the controller */
2299 addQ(&(h->reqQ), c);
2301 if (h->Qdepth > h->maxQsinceinit)
2302 h->maxQsinceinit = h->Qdepth;
2307 /* checks the status of the job and calls complete buffers to mark all
2308 * buffers for the completed job. Note that this function does not need
2309 * to hold the hba/queue lock.
2311 static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
2320 if (cmd->err_info->CommandStatus != 0) { /* an error has occurred */
2321 switch (cmd->err_info->CommandStatus) {
2322 unsigned char sense_key;
2323 case CMD_TARGET_STATUS:
2326 if (cmd->err_info->ScsiStatus == 0x02) {
2327 printk(KERN_WARNING "cciss: cmd %p "
2328 "has CHECK CONDITION "
2329 " byte 2 = 0x%x\n", cmd,
2330 cmd->err_info->SenseInfo[2]
2332 /* check the sense key */
2333 sense_key = 0xf & cmd->err_info->SenseInfo[2];
2334 /* no status or recovered error */
2335 if ((sense_key == 0x0) || (sense_key == 0x1)) {
2339 printk(KERN_WARNING "cciss: cmd %p "
2340 "has SCSI Status 0x%x\n",
2341 cmd, cmd->err_info->ScsiStatus);
2344 case CMD_DATA_UNDERRUN:
2345 printk(KERN_WARNING "cciss: cmd %p has"
2346 " completed with data underrun "
2349 case CMD_DATA_OVERRUN:
2350 printk(KERN_WARNING "cciss: cmd %p has"
2351 " completed with data overrun "
2355 printk(KERN_WARNING "cciss: cmd %p is "
2356 "reported invalid\n", cmd);
2359 case CMD_PROTOCOL_ERR:
2360 printk(KERN_WARNING "cciss: cmd %p has "
2361 "protocol error \n", cmd);
2364 case CMD_HARDWARE_ERR:
2365 printk(KERN_WARNING "cciss: cmd %p had "
2366 " hardware error\n", cmd);
2369 case CMD_CONNECTION_LOST:
2370 printk(KERN_WARNING "cciss: cmd %p had "
2371 "connection lost\n", cmd);
2375 printk(KERN_WARNING "cciss: cmd %p was "
2379 case CMD_ABORT_FAILED:
2380 printk(KERN_WARNING "cciss: cmd %p reports "
2381 "abort failed\n", cmd);
2384 case CMD_UNSOLICITED_ABORT:
2385 printk(KERN_WARNING "cciss%d: unsolicited "
2386 "abort %p\n", h->ctlr, cmd);
2387 if (cmd->retry_count < MAX_CMD_RETRIES) {
2390 "cciss%d: retrying %p\n", h->ctlr, cmd);
2394 "cciss%d: %p retried too "
2395 "many times\n", h->ctlr, cmd);
2399 printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd);
2403 printk(KERN_WARNING "cciss: cmd %p returned "
2404 "unknown status %x\n", cmd,
2405 cmd->err_info->CommandStatus);
2409 /* We need to return this command */
2411 resend_cciss_cmd(h, cmd);
2415 cmd->rq->completion_data = cmd;
2416 cmd->rq->errors = status;
2417 blk_add_trace_rq(cmd->rq->q, cmd->rq, BLK_TA_COMPLETE);
2418 blk_complete_request(cmd->rq);
2422 * Get a request and submit it to the controller.
2424 static void do_cciss_request(request_queue_t *q)
2426 ctlr_info_t *h = q->queuedata;
2427 CommandList_struct *c;
2429 struct request *creq;
2431 struct scatterlist tmp_sg[MAXSGENTRIES];
2432 drive_info_struct *drv;
2435 /* We call start_io here in case there is a command waiting on the
2436 * queue that has not been sent.
2438 if (blk_queue_plugged(q))
2442 creq = elv_next_request(q);
2446 BUG_ON(creq->nr_phys_segments > MAXSGENTRIES);
2448 if ((c = cmd_alloc(h, 1)) == NULL)
2451 blkdev_dequeue_request(creq);
2453 spin_unlock_irq(q->queue_lock);
2455 c->cmd_type = CMD_RWREQ;
2458 /* fill in the request */
2459 drv = creq->rq_disk->private_data;
2460 c->Header.ReplyQueue = 0; // unused in simple mode
2461 /* got command from pool, so use the command block index instead */
2462 /* for direct lookups. */
2463 /* The first 2 bits are reserved for controller error reporting. */
2464 c->Header.Tag.lower = (c->cmdindex << 3);
2465 c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */
2466 c->Header.LUN.LogDev.VolId = drv->LunID;
2467 c->Header.LUN.LogDev.Mode = 1;
2468 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2469 c->Request.Type.Type = TYPE_CMD; // It is a command.
2470 c->Request.Type.Attribute = ATTR_SIMPLE;
2471 c->Request.Type.Direction =
2472 (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE;
2473 c->Request.Timeout = 0; // Don't time out
2475 (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2476 start_blk = creq->sector;
2478 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector,
2479 (int)creq->nr_sectors);
2480 #endif /* CCISS_DEBUG */
2482 seg = blk_rq_map_sg(q, creq, tmp_sg);
2484 /* get the DMA records for the setup */
2485 if (c->Request.Type.Direction == XFER_READ)
2486 dir = PCI_DMA_FROMDEVICE;
2488 dir = PCI_DMA_TODEVICE;
2490 for (i = 0; i < seg; i++) {
2491 c->SG[i].Len = tmp_sg[i].length;
2492 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2494 tmp_sg[i].length, dir);
2495 c->SG[i].Addr.lower = temp64.val32.lower;
2496 c->SG[i].Addr.upper = temp64.val32.upper;
2497 c->SG[i].Ext = 0; // we are not chaining
2499 /* track how many SG entries we are using */
2504 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n",
2505 creq->nr_sectors, seg);
2506 #endif /* CCISS_DEBUG */
2508 c->Header.SGList = c->Header.SGTotal = seg;
2509 c->Request.CDB[1] = 0;
2510 c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB
2511 c->Request.CDB[3] = (start_blk >> 16) & 0xff;
2512 c->Request.CDB[4] = (start_blk >> 8) & 0xff;
2513 c->Request.CDB[5] = start_blk & 0xff;
2514 c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB
2515 c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff;
2516 c->Request.CDB[8] = creq->nr_sectors & 0xff;
2517 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2519 spin_lock_irq(q->queue_lock);
2521 addQ(&(h->reqQ), c);
2523 if (h->Qdepth > h->maxQsinceinit)
2524 h->maxQsinceinit = h->Qdepth;
2530 /* We will already have the driver lock here so not need
2536 static inline unsigned long get_next_completion(ctlr_info_t *h)
2538 #ifdef CONFIG_CISS_SCSI_TAPE
2539 /* Any rejects from sendcmd() lying around? Process them first */
2540 if (h->scsi_rejects.ncompletions == 0)
2541 return h->access.command_completed(h);
2543 struct sendcmd_reject_list *srl;
2545 srl = &h->scsi_rejects;
2546 n = --srl->ncompletions;
2547 /* printk("cciss%d: processing saved reject\n", h->ctlr); */
2549 return srl->complete[n];
2552 return h->access.command_completed(h);
2556 static inline int interrupt_pending(ctlr_info_t *h)
2558 #ifdef CONFIG_CISS_SCSI_TAPE
2559 return (h->access.intr_pending(h)
2560 || (h->scsi_rejects.ncompletions > 0));
2562 return h->access.intr_pending(h);
2566 static inline long interrupt_not_for_us(ctlr_info_t *h)
2568 #ifdef CONFIG_CISS_SCSI_TAPE
2569 return (((h->access.intr_pending(h) == 0) ||
2570 (h->interrupts_enabled == 0))
2571 && (h->scsi_rejects.ncompletions == 0));
2573 return (((h->access.intr_pending(h) == 0) ||
2574 (h->interrupts_enabled == 0)));
2578 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2580 ctlr_info_t *h = dev_id;
2581 CommandList_struct *c;
2582 unsigned long flags;
2585 if (interrupt_not_for_us(h))
2588 * If there are completed commands in the completion queue,
2589 * we had better do something about it.
2591 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2592 while (interrupt_pending(h)) {
2593 while ((a = get_next_completion(h)) != FIFO_EMPTY) {
2597 if (a2 >= NR_CMDS) {
2599 "cciss: controller cciss%d failed, stopping.\n",
2601 fail_all_cmds(h->ctlr);
2605 c = h->cmd_pool + a2;
2610 if ((c = h->cmpQ) == NULL) {
2612 "cciss: Completion of %08x ignored\n",
2616 while (c->busaddr != a) {
2623 * If we've found the command, take it off the
2624 * completion Q and free it
2626 if (c->busaddr == a) {
2627 removeQ(&h->cmpQ, c);
2628 if (c->cmd_type == CMD_RWREQ) {
2629 complete_command(h, c, 0);
2630 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2631 complete(c->waiting);
2633 # ifdef CONFIG_CISS_SCSI_TAPE
2634 else if (c->cmd_type == CMD_SCSI)
2635 complete_scsi_command(c, 0, a1);
2642 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2647 * We cannot read the structure directly, for portability we must use
2649 * This is for debug only.
2652 static void print_cfg_table(CfgTable_struct *tb)
2657 printk("Controller Configuration information\n");
2658 printk("------------------------------------\n");
2659 for (i = 0; i < 4; i++)
2660 temp_name[i] = readb(&(tb->Signature[i]));
2661 temp_name[4] = '\0';
2662 printk(" Signature = %s\n", temp_name);
2663 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2664 printk(" Transport methods supported = 0x%x\n",
2665 readl(&(tb->TransportSupport)));
2666 printk(" Transport methods active = 0x%x\n",
2667 readl(&(tb->TransportActive)));
2668 printk(" Requested transport Method = 0x%x\n",
2669 readl(&(tb->HostWrite.TransportRequest)));
2670 printk(" Coalesce Interrupt Delay = 0x%x\n",
2671 readl(&(tb->HostWrite.CoalIntDelay)));
2672 printk(" Coalesce Interrupt Count = 0x%x\n",
2673 readl(&(tb->HostWrite.CoalIntCount)));
2674 printk(" Max outstanding commands = 0x%d\n",
2675 readl(&(tb->CmdsOutMax)));
2676 printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
2677 for (i = 0; i < 16; i++)
2678 temp_name[i] = readb(&(tb->ServerName[i]));
2679 temp_name[16] = '\0';
2680 printk(" Server Name = %s\n", temp_name);
2681 printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat)));
2683 #endif /* CCISS_DEBUG */
2685 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
2687 int i, offset, mem_type, bar_type;
2688 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2691 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
2692 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
2693 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2696 mem_type = pci_resource_flags(pdev, i) &
2697 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2699 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2700 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2701 offset += 4; /* 32 bit */
2703 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2706 default: /* reserved in PCI 2.2 */
2708 "Base address is invalid\n");
2713 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2719 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
2720 * controllers that are capable. If not, we use IO-APIC mode.
2723 static void __devinit cciss_interrupt_mode(ctlr_info_t *c,
2724 struct pci_dev *pdev, __u32 board_id)
2726 #ifdef CONFIG_PCI_MSI
2728 struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1},
2732 /* Some boards advertise MSI but don't really support it */
2733 if ((board_id == 0x40700E11) ||
2734 (board_id == 0x40800E11) ||
2735 (board_id == 0x40820E11) || (board_id == 0x40830E11))
2736 goto default_int_mode;
2738 if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) {
2739 err = pci_enable_msix(pdev, cciss_msix_entries, 4);
2741 c->intr[0] = cciss_msix_entries[0].vector;
2742 c->intr[1] = cciss_msix_entries[1].vector;
2743 c->intr[2] = cciss_msix_entries[2].vector;
2744 c->intr[3] = cciss_msix_entries[3].vector;
2749 printk(KERN_WARNING "cciss: only %d MSI-X vectors "
2750 "available\n", err);
2752 printk(KERN_WARNING "cciss: MSI-X init failed %d\n",
2756 if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) {
2757 if (!pci_enable_msi(pdev)) {
2758 c->intr[SIMPLE_MODE_INT] = pdev->irq;
2762 printk(KERN_WARNING "cciss: MSI init failed\n");
2763 c->intr[SIMPLE_MODE_INT] = pdev->irq;
2768 #endif /* CONFIG_PCI_MSI */
2769 /* if we get here we're going to use the default interrupt mode */
2770 c->intr[SIMPLE_MODE_INT] = pdev->irq;
2774 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2776 ushort subsystem_vendor_id, subsystem_device_id, command;
2777 __u32 board_id, scratchpad = 0;
2779 __u32 cfg_base_addr;
2780 __u64 cfg_base_addr_index;
2783 /* check to see if controller has been disabled */
2784 /* BEFORE trying to enable it */
2785 (void)pci_read_config_word(pdev, PCI_COMMAND, &command);
2786 if (!(command & 0x02)) {
2788 "cciss: controller appears to be disabled\n");
2792 err = pci_enable_device(pdev);
2794 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2798 err = pci_request_regions(pdev, "cciss");
2800 printk(KERN_ERR "cciss: Cannot obtain PCI resources, "
2802 goto err_out_disable_pdev;
2805 subsystem_vendor_id = pdev->subsystem_vendor;
2806 subsystem_device_id = pdev->subsystem_device;
2807 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2808 subsystem_vendor_id);
2811 printk("command = %x\n", command);
2812 printk("irq = %x\n", pdev->irq);
2813 printk("board_id = %x\n", board_id);
2814 #endif /* CCISS_DEBUG */
2816 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
2817 * else we use the IO-APIC interrupt assigned to us by system ROM.
2819 cciss_interrupt_mode(c, pdev, board_id);
2822 * Memory base addr is first addr , the second points to the config
2826 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2828 printk("address 0 = %x\n", c->paddr);
2829 #endif /* CCISS_DEBUG */
2830 c->vaddr = remap_pci_mem(c->paddr, 200);
2832 /* Wait for the board to become ready. (PCI hotplug needs this.)
2833 * We poll for up to 120 secs, once per 100ms. */
2834 for (i = 0; i < 1200; i++) {
2835 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2836 if (scratchpad == CCISS_FIRMWARE_READY)
2838 set_current_state(TASK_INTERRUPTIBLE);
2839 schedule_timeout(HZ / 10); /* wait 100ms */
2841 if (scratchpad != CCISS_FIRMWARE_READY) {
2842 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2844 goto err_out_free_res;
2847 /* get the address index number */
2848 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2849 cfg_base_addr &= (__u32) 0x0000ffff;
2851 printk("cfg base address = %x\n", cfg_base_addr);
2852 #endif /* CCISS_DEBUG */
2853 cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr);
2855 printk("cfg base address index = %x\n", cfg_base_addr_index);
2856 #endif /* CCISS_DEBUG */
2857 if (cfg_base_addr_index == -1) {
2858 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2860 goto err_out_free_res;
2863 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2865 printk("cfg offset = %x\n", cfg_offset);
2866 #endif /* CCISS_DEBUG */
2867 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
2868 cfg_base_addr_index) +
2869 cfg_offset, sizeof(CfgTable_struct));
2870 c->board_id = board_id;
2873 print_cfg_table(c->cfgtable);
2874 #endif /* CCISS_DEBUG */
2876 for (i = 0; i < ARRAY_SIZE(products); i++) {
2877 if (board_id == products[i].board_id) {
2878 c->product_name = products[i].product_name;
2879 c->access = *(products[i].access);
2883 if (i == ARRAY_SIZE(products)) {
2884 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2885 " to access the Smart Array controller %08lx\n",
2886 (unsigned long)board_id);
2888 goto err_out_free_res;
2890 if ((readb(&c->cfgtable->Signature[0]) != 'C') ||
2891 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2892 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2893 (readb(&c->cfgtable->Signature[3]) != 'S')) {
2894 printk("Does not appear to be a valid CISS config table\n");
2896 goto err_out_free_res;
2900 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2902 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2904 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2909 printk("Trying to put board into Simple mode\n");
2910 #endif /* CCISS_DEBUG */
2911 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2912 /* Update the field, and then ring the doorbell */
2913 writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest));
2914 writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2916 /* under certain very rare conditions, this can take awhile.
2917 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2918 * as we enter this code.) */
2919 for (i = 0; i < MAX_CONFIG_WAIT; i++) {
2920 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2922 /* delay and try again */
2923 set_current_state(TASK_INTERRUPTIBLE);
2924 schedule_timeout(10);
2928 printk(KERN_DEBUG "I counter got to %d %x\n", i,
2929 readl(c->vaddr + SA5_DOORBELL));
2930 #endif /* CCISS_DEBUG */
2932 print_cfg_table(c->cfgtable);
2933 #endif /* CCISS_DEBUG */
2935 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
2936 printk(KERN_WARNING "cciss: unable to get board into"
2939 goto err_out_free_res;
2944 pci_release_regions(pdev);
2946 err_out_disable_pdev:
2947 pci_disable_device(pdev);
2952 * Gets information about the local volumes attached to the controller.
2954 static void cciss_getgeometry(int cntl_num)
2956 ReportLunData_struct *ld_buff;
2957 ReadCapdata_struct *size_buff;
2958 InquiryData_struct *inq_buff;
2966 ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2967 if (ld_buff == NULL) {
2968 printk(KERN_ERR "cciss: out of memory\n");
2971 size_buff = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
2972 if (size_buff == NULL) {
2973 printk(KERN_ERR "cciss: out of memory\n");
2977 inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
2978 if (inq_buff == NULL) {
2979 printk(KERN_ERR "cciss: out of memory\n");
2984 /* Get the firmware version */
2985 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2986 sizeof(InquiryData_struct), 0, 0, 0, NULL,
2988 if (return_code == IO_OK) {
2989 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2990 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2991 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2992 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2993 } else { /* send command failed */
2995 printk(KERN_WARNING "cciss: unable to determine firmware"
2996 " version of controller\n");
2998 /* Get the number of logical volumes */
2999 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
3000 sizeof(ReportLunData_struct), 0, 0, 0, NULL,
3003 if (return_code == IO_OK) {
3005 printk("LUN Data\n--------------------------\n");
3006 #endif /* CCISS_DEBUG */
3009 (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
3011 (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
3013 (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
3014 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
3015 } else { /* reading number of logical volumes failed */
3017 printk(KERN_WARNING "cciss: report logical volume"
3018 " command failed\n");
3021 hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
3022 if (hba[cntl_num]->num_luns > CISS_MAX_LUN) {
3024 "ciss: only %d number of logical volumes supported\n",
3026 hba[cntl_num]->num_luns = CISS_MAX_LUN;
3029 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n",
3030 ld_buff->LUNListLength[0], ld_buff->LUNListLength[1],
3031 ld_buff->LUNListLength[2], ld_buff->LUNListLength[3],
3032 hba[cntl_num]->num_luns);
3033 #endif /* CCISS_DEBUG */
3035 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1;
3036 // for(i=0; i< hba[cntl_num]->num_luns; i++)
3037 for (i = 0; i < CISS_MAX_LUN; i++) {
3038 if (i < hba[cntl_num]->num_luns) {
3039 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3]))
3041 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2]))
3043 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1]))
3045 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
3047 hba[cntl_num]->drv[i].LunID = lunid;
3050 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
3051 ld_buff->LUN[i][0], ld_buff->LUN[i][1],
3052 ld_buff->LUN[i][2], ld_buff->LUN[i][3],
3053 hba[cntl_num]->drv[i].LunID);
3054 #endif /* CCISS_DEBUG */
3055 cciss_read_capacity(cntl_num, i, size_buff, 0,
3056 &total_size, &block_size);
3057 cciss_geometry_inquiry(cntl_num, i, 0, total_size,
3058 block_size, inq_buff,
3059 &hba[cntl_num]->drv[i]);
3061 /* initialize raid_level to indicate a free space */
3062 hba[cntl_num]->drv[i].raid_level = -1;
3070 /* Function to find the first free pointer into our hba[] array */
3071 /* Returns -1 if no free entries are left. */
3072 static int alloc_cciss_hba(void)
3074 struct gendisk *disk[NWD];
3076 for (n = 0; n < NWD; n++) {
3077 disk[n] = alloc_disk(1 << NWD_SHIFT);
3082 for (i = 0; i < MAX_CTLR; i++) {
3085 p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL);
3088 for (n = 0; n < NWD; n++)
3089 p->gendisk[n] = disk[n];
3094 printk(KERN_WARNING "cciss: This driver supports a maximum"
3095 " of %d controllers.\n", MAX_CTLR);
3098 printk(KERN_ERR "cciss: out of memory.\n");
3105 static void free_hba(int i)
3107 ctlr_info_t *p = hba[i];
3111 for (n = 0; n < NWD; n++)
3112 put_disk(p->gendisk[n]);
3117 * This is it. Find all the controllers and register them. I really hate
3118 * stealing all these major device numbers.
3119 * returns the number of block devices registered.
3121 static int __devinit cciss_init_one(struct pci_dev *pdev,
3122 const struct pci_device_id *ent)
3130 i = alloc_cciss_hba();
3134 hba[i]->busy_initializing = 1;
3136 if (cciss_pci_init(hba[i], pdev) != 0)
3139 sprintf(hba[i]->devname, "cciss%d", i);
3141 hba[i]->pdev = pdev;
3143 /* configure PCI DMA stuff */
3144 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
3146 else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
3149 printk(KERN_ERR "cciss: no suitable DMA available\n");
3154 * register with the major number, or get a dynamic major number
3155 * by passing 0 as argument. This is done for greater than
3156 * 8 controller support.
3158 if (i < MAX_CTLR_ORIG)
3159 hba[i]->major = COMPAQ_CISS_MAJOR + i;
3160 rc = register_blkdev(hba[i]->major, hba[i]->devname);
3161 if (rc == -EBUSY || rc == -EINVAL) {
3163 "cciss: Unable to get major number %d for %s "
3164 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
3167 if (i >= MAX_CTLR_ORIG)
3171 /* make sure the board interrupts are off */
3172 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
3173 if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr,
3174 IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) {
3175 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
3176 hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname);
3180 printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
3181 hba[i]->devname, pdev->device, pci_name(pdev),
3182 hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not");
3184 hba[i]->cmd_pool_bits =
3185 kmalloc(((NR_CMDS + BITS_PER_LONG -
3186 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL);
3187 hba[i]->cmd_pool = (CommandList_struct *)
3188 pci_alloc_consistent(hba[i]->pdev,
3189 NR_CMDS * sizeof(CommandList_struct),
3190 &(hba[i]->cmd_pool_dhandle));
3191 hba[i]->errinfo_pool = (ErrorInfo_struct *)
3192 pci_alloc_consistent(hba[i]->pdev,
3193 NR_CMDS * sizeof(ErrorInfo_struct),
3194 &(hba[i]->errinfo_pool_dhandle));
3195 if ((hba[i]->cmd_pool_bits == NULL)
3196 || (hba[i]->cmd_pool == NULL)
3197 || (hba[i]->errinfo_pool == NULL)) {
3198 printk(KERN_ERR "cciss: out of memory");
3201 #ifdef CONFIG_CISS_SCSI_TAPE
3202 hba[i]->scsi_rejects.complete =
3203 kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) *
3204 (NR_CMDS + 5), GFP_KERNEL);
3205 if (hba[i]->scsi_rejects.complete == NULL) {
3206 printk(KERN_ERR "cciss: out of memory");
3210 spin_lock_init(&hba[i]->lock);
3212 /* Initialize the pdev driver private data.
3213 have it point to hba[i]. */
3214 pci_set_drvdata(pdev, hba[i]);
3215 /* command and error info recs zeroed out before
3217 memset(hba[i]->cmd_pool_bits, 0,
3218 ((NR_CMDS + BITS_PER_LONG -
3219 1) / BITS_PER_LONG) * sizeof(unsigned long));
3222 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n", i);
3223 #endif /* CCISS_DEBUG */
3225 cciss_getgeometry(i);
3227 cciss_scsi_setup(i);
3229 /* Turn the interrupts on so we can service requests */
3230 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
3233 hba[i]->busy_initializing = 0;
3235 for (j = 0; j < NWD; j++) { /* mfm */
3236 drive_info_struct *drv = &(hba[i]->drv[j]);
3237 struct gendisk *disk = hba[i]->gendisk[j];
3239 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
3242 "cciss: unable to allocate queue for disk %d\n",
3248 q->backing_dev_info.ra_pages = READ_AHEAD;
3249 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
3251 /* This is a hardware imposed limit. */
3252 blk_queue_max_hw_segments(q, MAXSGENTRIES);
3254 /* This is a limit in the driver and could be eliminated. */
3255 blk_queue_max_phys_segments(q, MAXSGENTRIES);
3257 blk_queue_max_sectors(q, 512);
3259 blk_queue_softirq_done(q, cciss_softirq_done);
3261 q->queuedata = hba[i];
3262 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
3263 disk->major = hba[i]->major;
3264 disk->first_minor = j << NWD_SHIFT;
3265 disk->fops = &cciss_fops;
3267 disk->private_data = drv;
3268 disk->driverfs_dev = &pdev->dev;
3269 /* we must register the controller even if no disks exist */
3270 /* this is for the online array utilities */
3271 if (!drv->heads && j)
3273 blk_queue_hardsect_size(q, drv->block_size);
3274 set_capacity(disk, drv->nr_blocks);
3281 #ifdef CONFIG_CISS_SCSI_TAPE
3282 kfree(hba[i]->scsi_rejects.complete);
3284 kfree(hba[i]->cmd_pool_bits);
3285 if (hba[i]->cmd_pool)
3286 pci_free_consistent(hba[i]->pdev,
3287 NR_CMDS * sizeof(CommandList_struct),
3288 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3289 if (hba[i]->errinfo_pool)
3290 pci_free_consistent(hba[i]->pdev,
3291 NR_CMDS * sizeof(ErrorInfo_struct),
3292 hba[i]->errinfo_pool,
3293 hba[i]->errinfo_pool_dhandle);
3294 free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]);
3296 unregister_blkdev(hba[i]->major, hba[i]->devname);
3298 hba[i]->busy_initializing = 0;
3303 static void __devexit cciss_remove_one(struct pci_dev *pdev)
3305 ctlr_info_t *tmp_ptr;
3310 if (pci_get_drvdata(pdev) == NULL) {
3311 printk(KERN_ERR "cciss: Unable to remove device \n");
3314 tmp_ptr = pci_get_drvdata(pdev);
3316 if (hba[i] == NULL) {
3317 printk(KERN_ERR "cciss: device appears to "
3318 "already be removed \n");
3321 /* Turn board interrupts off and send the flush cache command */
3322 /* sendcmd will turn off interrupt, and send the flush...
3323 * To write all data in the battery backed cache to disks */
3324 memset(flush_buf, 0, 4);
3325 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
3327 if (return_code != IO_OK) {
3328 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
3331 free_irq(hba[i]->intr[2], hba[i]);
3333 #ifdef CONFIG_PCI_MSI
3334 if (hba[i]->msix_vector)
3335 pci_disable_msix(hba[i]->pdev);
3336 else if (hba[i]->msi_vector)
3337 pci_disable_msi(hba[i]->pdev);
3338 #endif /* CONFIG_PCI_MSI */
3340 iounmap(hba[i]->vaddr);
3341 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
3342 unregister_blkdev(hba[i]->major, hba[i]->devname);
3343 remove_proc_entry(hba[i]->devname, proc_cciss);
3345 /* remove it from the disk list */
3346 for (j = 0; j < NWD; j++) {
3347 struct gendisk *disk = hba[i]->gendisk[j];
3349 request_queue_t *q = disk->queue;
3351 if (disk->flags & GENHD_FL_UP)
3354 blk_cleanup_queue(q);
3358 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
3359 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3360 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(ErrorInfo_struct),
3361 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
3362 kfree(hba[i]->cmd_pool_bits);
3363 #ifdef CONFIG_CISS_SCSI_TAPE
3364 kfree(hba[i]->scsi_rejects.complete);
3366 pci_release_regions(pdev);
3367 pci_disable_device(pdev);
3368 pci_set_drvdata(pdev, NULL);
3372 static struct pci_driver cciss_pci_driver = {
3374 .probe = cciss_init_one,
3375 .remove = __devexit_p(cciss_remove_one),
3376 .id_table = cciss_pci_device_id, /* id_table */
3380 * This is it. Register the PCI driver information for the cards we control
3381 * the OS will call our registered routines when it finds one of our cards.
3383 static int __init cciss_init(void)
3385 printk(KERN_INFO DRIVER_NAME "\n");
3387 /* Register for our PCI devices */
3388 return pci_register_driver(&cciss_pci_driver);
3391 static void __exit cciss_cleanup(void)
3395 pci_unregister_driver(&cciss_pci_driver);
3396 /* double check that all controller entrys have been removed */
3397 for (i = 0; i < MAX_CTLR; i++) {
3398 if (hba[i] != NULL) {
3399 printk(KERN_WARNING "cciss: had to remove"
3400 " controller %d\n", i);
3401 cciss_remove_one(hba[i]->pdev);
3404 remove_proc_entry("cciss", proc_root_driver);
3407 static void fail_all_cmds(unsigned long ctlr)
3409 /* If we get here, the board is apparently dead. */
3410 ctlr_info_t *h = hba[ctlr];
3411 CommandList_struct *c;
3412 unsigned long flags;
3414 printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr);
3415 h->alive = 0; /* the controller apparently died... */
3417 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
3419 pci_disable_device(h->pdev); /* Make sure it is really dead. */
3421 /* move everything off the request queue onto the completed queue */
3422 while ((c = h->reqQ) != NULL) {
3423 removeQ(&(h->reqQ), c);
3425 addQ(&(h->cmpQ), c);
3428 /* Now, fail everything on the completed queue with a HW error */
3429 while ((c = h->cmpQ) != NULL) {
3430 removeQ(&h->cmpQ, c);
3431 c->err_info->CommandStatus = CMD_HARDWARE_ERR;
3432 if (c->cmd_type == CMD_RWREQ) {
3433 complete_command(h, c, 0);
3434 } else if (c->cmd_type == CMD_IOCTL_PEND)
3435 complete(c->waiting);
3436 #ifdef CONFIG_CISS_SCSI_TAPE
3437 else if (c->cmd_type == CMD_SCSI)
3438 complete_scsi_command(c, 0, 0);
3441 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
3445 module_init(cciss_init);
3446 module_exit(cciss_cleanup);