2 * Disk Array driver for HP SA 5xxx and 6xxx Controllers
3 * Copyright 2000, 2002 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 <asm/uaccess.h>
44 #include <linux/blkdev.h>
45 #include <linux/genhd.h>
46 #include <linux/completion.h>
48 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
49 #define DRIVER_NAME "HP CISS Driver (v 2.6.4)"
50 #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,4)
52 /* Embedded module documentation macros - see modules.h */
53 MODULE_AUTHOR("Hewlett-Packard Company");
54 MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.4");
55 MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
57 MODULE_LICENSE("GPL");
59 #include "cciss_cmd.h"
61 #include <linux/cciss_ioctl.h>
63 /* define the PCI info for the cards we can control */
64 const struct pci_device_id cciss_pci_device_id[] = {
65 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS,
66 0x0E11, 0x4070, 0, 0, 0},
67 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
68 0x0E11, 0x4080, 0, 0, 0},
69 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
70 0x0E11, 0x4082, 0, 0, 0},
71 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
72 0x0E11, 0x4083, 0, 0, 0},
73 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
74 0x0E11, 0x409A, 0, 0, 0},
75 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
76 0x0E11, 0x409B, 0, 0, 0},
77 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
78 0x0E11, 0x409C, 0, 0, 0},
79 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
80 0x0E11, 0x409D, 0, 0, 0},
81 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
82 0x0E11, 0x4091, 0, 0, 0},
83 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA,
84 0x103C, 0x3225, 0, 0, 0},
87 MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
89 #define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
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},
108 /* How long to wait (in millesconds) for board to go into simple mode */
109 #define MAX_CONFIG_WAIT 30000
110 #define MAX_IOCTL_CONFIG_WAIT 1000
112 /*define how many times we will try a command because of bus resets */
113 #define MAX_CMD_RETRIES 3
115 #define READ_AHEAD 1024
116 #define NR_CMDS 384 /* #commands that can be outstanding */
119 #define CCISS_DMA_MASK 0xFFFFFFFF /* 32 bit DMA */
121 static ctlr_info_t *hba[MAX_CTLR];
123 static void do_cciss_request(request_queue_t *q);
124 static int cciss_open(struct inode *inode, struct file *filep);
125 static int cciss_release(struct inode *inode, struct file *filep);
126 static int cciss_ioctl(struct inode *inode, struct file *filep,
127 unsigned int cmd, unsigned long arg);
129 static int revalidate_allvol(ctlr_info_t *host);
130 static int cciss_revalidate(struct gendisk *disk);
131 static int deregister_disk(struct gendisk *disk);
132 static int register_new_disk(ctlr_info_t *h);
134 static void cciss_getgeometry(int cntl_num);
136 static void start_io( ctlr_info_t *h);
137 static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
138 unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
139 unsigned char *scsi3addr, int cmd_type);
141 #ifdef CONFIG_PROC_FS
142 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
143 int length, int *eof, void *data);
144 static void cciss_procinit(int i);
146 static void cciss_procinit(int i) {}
147 #endif /* CONFIG_PROC_FS */
150 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
153 static struct block_device_operations cciss_fops = {
154 .owner = THIS_MODULE,
156 .release = cciss_release,
157 .ioctl = cciss_ioctl,
159 .compat_ioctl = cciss_compat_ioctl,
161 .revalidate_disk= cciss_revalidate,
165 * Enqueuing and dequeuing functions for cmdlists.
167 static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
171 c->next = c->prev = c;
173 c->prev = (*Qptr)->prev;
175 (*Qptr)->prev->next = c;
180 static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
181 CommandList_struct *c)
183 if (c && c->next != c) {
184 if (*Qptr == c) *Qptr = c->next;
185 c->prev->next = c->next;
186 c->next->prev = c->prev;
193 #include "cciss_scsi.c" /* For SCSI tape support */
195 #ifdef CONFIG_PROC_FS
198 * Report information about this controller.
200 #define ENG_GIG 1000000000
201 #define ENG_GIG_FACTOR (ENG_GIG/512)
202 #define RAID_UNKNOWN 6
203 static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
206 static struct proc_dir_entry *proc_cciss;
208 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
209 int length, int *eof, void *data)
214 ctlr_info_t *h = (ctlr_info_t*)data;
215 drive_info_struct *drv;
217 sector_t vol_sz, vol_sz_frac;
221 /* prevent displaying bogus info during configuration
222 * or deconfiguration of a logical volume
224 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
225 if (h->busy_configuring) {
226 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
229 h->busy_configuring = 1;
230 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
232 size = sprintf(buffer, "%s: HP %s Controller\n"
233 "Board ID: 0x%08lx\n"
234 "Firmware Version: %c%c%c%c\n"
236 "Logical drives: %d\n"
237 "Current Q depth: %d\n"
238 "Current # commands on controller: %d\n"
239 "Max Q depth since init: %d\n"
240 "Max # commands on controller since init: %d\n"
241 "Max SG entries since init: %d\n\n",
244 (unsigned long)h->board_id,
245 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
246 (unsigned int)h->intr,
248 h->Qdepth, h->commands_outstanding,
249 h->maxQsinceinit, h->max_outstanding, h->maxSG);
251 pos += size; len += size;
252 cciss_proc_tape_report(ctlr, buffer, &pos, &len);
253 for(i=0; i<=h->highest_lun; i++) {
256 if (drv->block_size == 0)
259 vol_sz = drv->nr_blocks;
260 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
262 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
264 if (drv->raid_level > 5)
265 drv->raid_level = RAID_UNKNOWN;
266 size = sprintf(buffer+len, "cciss/c%dd%d:"
267 "\t%4u.%02uGB\tRAID %s\n",
268 ctlr, i, (int)vol_sz, (int)vol_sz_frac,
269 raid_label[drv->raid_level]);
270 pos += size; len += size;
274 *start = buffer+offset;
278 h->busy_configuring = 0;
283 cciss_proc_write(struct file *file, const char __user *buffer,
284 unsigned long count, void *data)
286 unsigned char cmd[80];
288 #ifdef CONFIG_CISS_SCSI_TAPE
289 ctlr_info_t *h = (ctlr_info_t *) data;
293 if (count > sizeof(cmd)-1) return -EINVAL;
294 if (copy_from_user(cmd, buffer, count)) return -EFAULT;
296 len = strlen(cmd); // above 3 lines ensure safety
297 if (cmd[len-1] == '\n')
299 # ifdef CONFIG_CISS_SCSI_TAPE
300 if (strcmp("engage scsi", cmd)==0) {
301 rc = cciss_engage_scsi(h->ctlr);
302 if (rc != 0) return -rc;
305 /* might be nice to have "disengage" too, but it's not
306 safely possible. (only 1 module use count, lock issues.) */
312 * Get us a file in /proc/cciss that says something about each controller.
313 * Create /proc/cciss if it doesn't exist yet.
315 static void __devinit cciss_procinit(int i)
317 struct proc_dir_entry *pde;
319 if (proc_cciss == NULL) {
320 proc_cciss = proc_mkdir("cciss", proc_root_driver);
325 pde = create_proc_read_entry(hba[i]->devname,
326 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
327 proc_cciss, cciss_proc_get_info, hba[i]);
328 pde->write_proc = cciss_proc_write;
330 #endif /* CONFIG_PROC_FS */
333 * For operations that cannot sleep, a command block is allocated at init,
334 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
335 * which ones are free or in use. For operations that can wait for kmalloc
336 * to possible sleep, this routine can be called with get_from_pool set to 0.
337 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
339 static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
341 CommandList_struct *c;
344 dma_addr_t cmd_dma_handle, err_dma_handle;
348 c = (CommandList_struct *) pci_alloc_consistent(
349 h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
352 memset(c, 0, sizeof(CommandList_struct));
354 c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
355 h->pdev, sizeof(ErrorInfo_struct),
358 if (c->err_info == NULL)
360 pci_free_consistent(h->pdev,
361 sizeof(CommandList_struct), c, cmd_dma_handle);
364 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
365 } else /* get it out of the controllers pool */
368 i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
371 } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
373 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
376 memset(c, 0, sizeof(CommandList_struct));
377 cmd_dma_handle = h->cmd_pool_dhandle
378 + i*sizeof(CommandList_struct);
379 c->err_info = h->errinfo_pool + i;
380 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
381 err_dma_handle = h->errinfo_pool_dhandle
382 + i*sizeof(ErrorInfo_struct);
386 c->busaddr = (__u32) cmd_dma_handle;
387 temp64.val = (__u64) err_dma_handle;
388 c->ErrDesc.Addr.lower = temp64.val32.lower;
389 c->ErrDesc.Addr.upper = temp64.val32.upper;
390 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
399 * Frees a command block that was previously allocated with cmd_alloc().
401 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
408 temp64.val32.lower = c->ErrDesc.Addr.lower;
409 temp64.val32.upper = c->ErrDesc.Addr.upper;
410 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
411 c->err_info, (dma_addr_t) temp64.val);
412 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
413 c, (dma_addr_t) c->busaddr);
417 clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
422 static inline ctlr_info_t *get_host(struct gendisk *disk)
424 return disk->queue->queuedata;
427 static inline drive_info_struct *get_drv(struct gendisk *disk)
429 return disk->private_data;
433 * Open. Make sure the device is really there.
435 static int cciss_open(struct inode *inode, struct file *filep)
437 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
438 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
441 printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
442 #endif /* CCISS_DEBUG */
445 * Root is allowed to open raw volume zero even if it's not configured
446 * so array config can still work. Root is also allowed to open any
447 * volume that has a LUN ID, so it can issue IOCTL to reread the
448 * disk information. I don't think I really like this
449 * but I'm already using way to many device nodes to claim another one
450 * for "raw controller".
452 if (drv->nr_blocks == 0) {
453 if (iminor(inode) != 0) { /* not node 0? */
454 /* if not node 0 make sure it is a partition = 0 */
455 if (iminor(inode) & 0x0f) {
457 /* if it is, make sure we have a LUN ID */
458 } else if (drv->LunID == 0) {
462 if (!capable(CAP_SYS_ADMIN))
472 static int cciss_release(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_release %s\n", inode->i_bdev->bd_disk->disk_name);
479 #endif /* CCISS_DEBUG */
488 static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
492 ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
497 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
498 static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
500 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
503 case CCISS_GETPCIINFO:
504 case CCISS_GETINTINFO:
505 case CCISS_SETINTINFO:
506 case CCISS_GETNODENAME:
507 case CCISS_SETNODENAME:
508 case CCISS_GETHEARTBEAT:
509 case CCISS_GETBUSTYPES:
510 case CCISS_GETFIRMVER:
511 case CCISS_GETDRIVVER:
512 case CCISS_REVALIDVOLS:
513 case CCISS_DEREGDISK:
514 case CCISS_REGNEWDISK:
516 case CCISS_RESCANDISK:
517 case CCISS_GETLUNINFO:
518 return do_ioctl(f, cmd, arg);
520 case CCISS_PASSTHRU32:
521 return cciss_ioctl32_passthru(f, cmd, arg);
522 case CCISS_BIG_PASSTHRU32:
523 return cciss_ioctl32_big_passthru(f, cmd, arg);
530 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
532 IOCTL32_Command_struct __user *arg32 =
533 (IOCTL32_Command_struct __user *) arg;
534 IOCTL_Command_struct arg64;
535 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
540 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
541 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
542 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
543 err |= get_user(arg64.buf_size, &arg32->buf_size);
544 err |= get_user(cp, &arg32->buf);
545 arg64.buf = compat_ptr(cp);
546 err |= copy_to_user(p, &arg64, sizeof(arg64));
551 err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
554 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
560 static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
562 BIG_IOCTL32_Command_struct __user *arg32 =
563 (BIG_IOCTL32_Command_struct __user *) arg;
564 BIG_IOCTL_Command_struct arg64;
565 BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
570 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
571 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
572 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
573 err |= get_user(arg64.buf_size, &arg32->buf_size);
574 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
575 err |= get_user(cp, &arg32->buf);
576 arg64.buf = compat_ptr(cp);
577 err |= copy_to_user(p, &arg64, sizeof(arg64));
582 err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
585 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
594 static int cciss_ioctl(struct inode *inode, struct file *filep,
595 unsigned int cmd, unsigned long arg)
597 struct block_device *bdev = inode->i_bdev;
598 struct gendisk *disk = bdev->bd_disk;
599 ctlr_info_t *host = get_host(disk);
600 drive_info_struct *drv = get_drv(disk);
601 int ctlr = host->ctlr;
602 void __user *argp = (void __user *)arg;
605 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
606 #endif /* CCISS_DEBUG */
611 struct hd_geometry driver_geo;
612 if (drv->cylinders) {
613 driver_geo.heads = drv->heads;
614 driver_geo.sectors = drv->sectors;
615 driver_geo.cylinders = drv->cylinders;
618 driver_geo.start= get_start_sect(inode->i_bdev);
619 if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry)))
624 case CCISS_GETPCIINFO:
626 cciss_pci_info_struct pciinfo;
628 if (!arg) return -EINVAL;
629 pciinfo.bus = host->pdev->bus->number;
630 pciinfo.dev_fn = host->pdev->devfn;
631 pciinfo.board_id = host->board_id;
632 if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct )))
636 case CCISS_GETINTINFO:
638 cciss_coalint_struct intinfo;
639 if (!arg) return -EINVAL;
640 intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
641 intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
642 if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
646 case CCISS_SETINTINFO:
648 cciss_coalint_struct intinfo;
652 if (!arg) return -EINVAL;
653 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
654 if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
656 if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
659 // printk("cciss_ioctl: delay and count cannot be 0\n");
662 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
663 /* Update the field, and then ring the doorbell */
664 writel( intinfo.delay,
665 &(host->cfgtable->HostWrite.CoalIntDelay));
666 writel( intinfo.count,
667 &(host->cfgtable->HostWrite.CoalIntCount));
668 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
670 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
671 if (!(readl(host->vaddr + SA5_DOORBELL)
674 /* delay and try again */
677 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
678 if (i >= MAX_IOCTL_CONFIG_WAIT)
682 case CCISS_GETNODENAME:
684 NodeName_type NodeName;
687 if (!arg) return -EINVAL;
689 NodeName[i] = readb(&host->cfgtable->ServerName[i]);
690 if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
694 case CCISS_SETNODENAME:
696 NodeName_type NodeName;
700 if (!arg) return -EINVAL;
701 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
703 if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
706 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
708 /* Update the field, and then ring the doorbell */
710 writeb( NodeName[i], &host->cfgtable->ServerName[i]);
712 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
714 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
715 if (!(readl(host->vaddr + SA5_DOORBELL)
718 /* delay and try again */
721 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
722 if (i >= MAX_IOCTL_CONFIG_WAIT)
727 case CCISS_GETHEARTBEAT:
729 Heartbeat_type heartbeat;
731 if (!arg) return -EINVAL;
732 heartbeat = readl(&host->cfgtable->HeartBeat);
733 if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
737 case CCISS_GETBUSTYPES:
739 BusTypes_type BusTypes;
741 if (!arg) return -EINVAL;
742 BusTypes = readl(&host->cfgtable->BusTypes);
743 if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
747 case CCISS_GETFIRMVER:
749 FirmwareVer_type firmware;
751 if (!arg) return -EINVAL;
752 memcpy(firmware, host->firm_ver, 4);
754 if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
758 case CCISS_GETDRIVVER:
760 DriverVer_type DriverVer = DRIVER_VERSION;
762 if (!arg) return -EINVAL;
764 if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
769 case CCISS_REVALIDVOLS:
770 if (bdev != bdev->bd_contains || drv != host->drv)
772 return revalidate_allvol(host);
774 case CCISS_GETLUNINFO: {
775 LogvolInfo_struct luninfo;
778 luninfo.LunID = drv->LunID;
779 luninfo.num_opens = drv->usage_count;
780 luninfo.num_parts = 0;
781 /* count partitions 1 to 15 with sizes > 0 */
782 for (i = 0; i < MAX_PART - 1; i++) {
785 if (disk->part[i]->nr_sects != 0)
788 if (copy_to_user(argp, &luninfo,
789 sizeof(LogvolInfo_struct)))
793 case CCISS_DEREGDISK:
794 return deregister_disk(disk);
797 return register_new_disk(host);
801 IOCTL_Command_struct iocommand;
802 CommandList_struct *c;
806 DECLARE_COMPLETION(wait);
808 if (!arg) return -EINVAL;
810 if (!capable(CAP_SYS_RAWIO)) return -EPERM;
812 if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
814 if((iocommand.buf_size < 1) &&
815 (iocommand.Request.Type.Direction != XFER_NONE))
819 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
820 /* Check kmalloc limits */
821 if(iocommand.buf_size > 128000)
824 if(iocommand.buf_size > 0)
826 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
830 if (iocommand.Request.Type.Direction == XFER_WRITE)
832 /* Copy the data into the buffer we created */
833 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
839 memset(buff, 0, iocommand.buf_size);
841 if ((c = cmd_alloc(host , 0)) == NULL)
846 // Fill in the command type
847 c->cmd_type = CMD_IOCTL_PEND;
848 // Fill in Command Header
849 c->Header.ReplyQueue = 0; // unused in simple mode
850 if( iocommand.buf_size > 0) // buffer to fill
852 c->Header.SGList = 1;
853 c->Header.SGTotal= 1;
854 } else // no buffers to fill
856 c->Header.SGList = 0;
857 c->Header.SGTotal= 0;
859 c->Header.LUN = iocommand.LUN_info;
860 c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
862 // Fill in Request block
863 c->Request = iocommand.Request;
865 // Fill in the scatter gather information
866 if (iocommand.buf_size > 0 )
868 temp64.val = pci_map_single( host->pdev, buff,
870 PCI_DMA_BIDIRECTIONAL);
871 c->SG[0].Addr.lower = temp64.val32.lower;
872 c->SG[0].Addr.upper = temp64.val32.upper;
873 c->SG[0].Len = iocommand.buf_size;
874 c->SG[0].Ext = 0; // we are not chaining
878 /* Put the request on the tail of the request queue */
879 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
880 addQ(&host->reqQ, c);
883 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
885 wait_for_completion(&wait);
887 /* unlock the buffers from DMA */
888 temp64.val32.lower = c->SG[0].Addr.lower;
889 temp64.val32.upper = c->SG[0].Addr.upper;
890 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
891 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
893 /* Copy the error information out */
894 iocommand.error_info = *(c->err_info);
895 if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
898 cmd_free(host, c, 0);
902 if (iocommand.Request.Type.Direction == XFER_READ)
904 /* Copy the data out of the buffer we created */
905 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
908 cmd_free(host, c, 0);
913 cmd_free(host, c, 0);
916 case CCISS_BIG_PASSTHRU: {
917 BIG_IOCTL_Command_struct *ioc;
918 CommandList_struct *c;
919 unsigned char **buff = NULL;
920 int *buff_size = NULL;
926 DECLARE_COMPLETION(wait);
929 BYTE __user *data_ptr;
933 if (!capable(CAP_SYS_RAWIO))
935 ioc = (BIG_IOCTL_Command_struct *)
936 kmalloc(sizeof(*ioc), GFP_KERNEL);
941 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
945 if ((ioc->buf_size < 1) &&
946 (ioc->Request.Type.Direction != XFER_NONE)) {
950 /* Check kmalloc limits using all SGs */
951 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
955 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
959 buff = (unsigned char **) kmalloc(MAXSGENTRIES *
960 sizeof(char *), GFP_KERNEL);
965 memset(buff, 0, MAXSGENTRIES);
966 buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
972 left = ioc->buf_size;
975 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
976 buff_size[sg_used] = sz;
977 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
978 if (buff[sg_used] == NULL) {
982 if (ioc->Request.Type.Direction == XFER_WRITE &&
983 copy_from_user(buff[sg_used], data_ptr, sz)) {
987 memset(buff[sg_used], 0, sz);
993 if ((c = cmd_alloc(host , 0)) == NULL) {
997 c->cmd_type = CMD_IOCTL_PEND;
998 c->Header.ReplyQueue = 0;
1000 if( ioc->buf_size > 0) {
1001 c->Header.SGList = sg_used;
1002 c->Header.SGTotal= sg_used;
1004 c->Header.SGList = 0;
1005 c->Header.SGTotal= 0;
1007 c->Header.LUN = ioc->LUN_info;
1008 c->Header.Tag.lower = c->busaddr;
1010 c->Request = ioc->Request;
1011 if (ioc->buf_size > 0 ) {
1013 for(i=0; i<sg_used; i++) {
1014 temp64.val = pci_map_single( host->pdev, buff[i],
1016 PCI_DMA_BIDIRECTIONAL);
1017 c->SG[i].Addr.lower = temp64.val32.lower;
1018 c->SG[i].Addr.upper = temp64.val32.upper;
1019 c->SG[i].Len = buff_size[i];
1020 c->SG[i].Ext = 0; /* we are not chaining */
1024 /* Put the request on the tail of the request queue */
1025 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1026 addQ(&host->reqQ, c);
1029 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1030 wait_for_completion(&wait);
1031 /* unlock the buffers from DMA */
1032 for(i=0; i<sg_used; i++) {
1033 temp64.val32.lower = c->SG[i].Addr.lower;
1034 temp64.val32.upper = c->SG[i].Addr.upper;
1035 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
1036 buff_size[i], PCI_DMA_BIDIRECTIONAL);
1038 /* Copy the error information out */
1039 ioc->error_info = *(c->err_info);
1040 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1041 cmd_free(host, c, 0);
1045 if (ioc->Request.Type.Direction == XFER_READ) {
1046 /* Copy the data out of the buffer we created */
1047 BYTE __user *ptr = ioc->buf;
1048 for(i=0; i< sg_used; i++) {
1049 if (copy_to_user(ptr, buff[i], buff_size[i])) {
1050 cmd_free(host, c, 0);
1054 ptr += buff_size[i];
1057 cmd_free(host, c, 0);
1061 for(i=0; i<sg_used; i++)
1079 * revalidate_allvol is for online array config utilities. After a
1080 * utility reconfigures the drives in the array, it can use this function
1081 * (through an ioctl) to make the driver zap any previous disk structs for
1082 * that controller and get new ones.
1084 * Right now I'm using the getgeometry() function to do this, but this
1085 * function should probably be finer grained and allow you to revalidate one
1086 * particualar logical volume (instead of all of them on a particular
1089 static int revalidate_allvol(ctlr_info_t *host)
1091 int ctlr = host->ctlr, i;
1092 unsigned long flags;
1094 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1095 if (host->usage_count > 1) {
1096 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1097 printk(KERN_WARNING "cciss: Device busy for volume"
1098 " revalidation (usage=%d)\n", host->usage_count);
1101 host->usage_count++;
1102 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1104 for(i=0; i< NWD; i++) {
1105 struct gendisk *disk = host->gendisk[i];
1106 if (disk->flags & GENHD_FL_UP)
1111 * Set the partition and block size structures for all volumes
1112 * on this controller to zero. We will reread all of this data
1114 memset(host->drv, 0, sizeof(drive_info_struct)
1117 * Tell the array controller not to give us any interrupts while
1118 * we check the new geometry. Then turn interrupts back on when
1121 host->access.set_intr_mask(host, CCISS_INTR_OFF);
1122 cciss_getgeometry(ctlr);
1123 host->access.set_intr_mask(host, CCISS_INTR_ON);
1125 /* Loop through each real device */
1126 for (i = 0; i < NWD; i++) {
1127 struct gendisk *disk = host->gendisk[i];
1128 drive_info_struct *drv = &(host->drv[i]);
1129 /* we must register the controller even if no disks exist */
1130 /* this is for the online array utilities */
1131 if (!drv->heads && i)
1133 blk_queue_hardsect_size(host->queue, drv->block_size);
1134 set_capacity(disk, drv->nr_blocks);
1137 host->usage_count--;
1141 static int deregister_disk(struct gendisk *disk)
1143 unsigned long flags;
1144 ctlr_info_t *h = get_host(disk);
1145 drive_info_struct *drv = get_drv(disk);
1148 if (!capable(CAP_SYS_RAWIO))
1151 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1152 /* make sure logical volume is NOT is use */
1153 if( drv->usage_count > 1) {
1154 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1158 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1160 /* invalidate the devices and deregister the disk */
1161 if (disk->flags & GENHD_FL_UP)
1163 /* check to see if it was the last disk */
1164 if (drv == h->drv + h->highest_lun) {
1165 /* if so, find the new hightest lun */
1166 int i, newhighest =-1;
1167 for(i=0; i<h->highest_lun; i++) {
1168 /* if the disk has size > 0, it is available */
1169 if (h->drv[i].nr_blocks)
1172 h->highest_lun = newhighest;
1176 /* zero out the disk size info */
1178 drv->block_size = 0;
1183 static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
1185 unsigned int use_unit_num, /* 0: address the controller,
1186 1: address logical volume log_unit,
1187 2: periph device address is scsi3addr */
1188 unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
1191 ctlr_info_t *h= hba[ctlr];
1192 u64bit buff_dma_handle;
1195 c->cmd_type = CMD_IOCTL_PEND;
1196 c->Header.ReplyQueue = 0;
1198 c->Header.SGList = 1;
1199 c->Header.SGTotal= 1;
1201 c->Header.SGList = 0;
1202 c->Header.SGTotal= 0;
1204 c->Header.Tag.lower = c->busaddr;
1206 c->Request.Type.Type = cmd_type;
1207 if (cmd_type == TYPE_CMD) {
1210 /* If the logical unit number is 0 then, this is going
1211 to controller so It's a physical command
1212 mode = 0 target = 0. So we have nothing to write.
1213 otherwise, if use_unit_num == 1,
1214 mode = 1(volume set addressing) target = LUNID
1215 otherwise, if use_unit_num == 2,
1216 mode = 0(periph dev addr) target = scsi3addr */
1217 if (use_unit_num == 1) {
1218 c->Header.LUN.LogDev.VolId=
1219 h->drv[log_unit].LunID;
1220 c->Header.LUN.LogDev.Mode = 1;
1221 } else if (use_unit_num == 2) {
1222 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
1223 c->Header.LUN.LogDev.Mode = 0;
1225 /* are we trying to read a vital product page */
1226 if(page_code != 0) {
1227 c->Request.CDB[1] = 0x01;
1228 c->Request.CDB[2] = page_code;
1230 c->Request.CDBLen = 6;
1231 c->Request.Type.Attribute = ATTR_SIMPLE;
1232 c->Request.Type.Direction = XFER_READ;
1233 c->Request.Timeout = 0;
1234 c->Request.CDB[0] = CISS_INQUIRY;
1235 c->Request.CDB[4] = size & 0xFF;
1237 case CISS_REPORT_LOG:
1238 case CISS_REPORT_PHYS:
1239 /* Talking to controller so It's a physical command
1240 mode = 00 target = 0. Nothing to write.
1242 c->Request.CDBLen = 12;
1243 c->Request.Type.Attribute = ATTR_SIMPLE;
1244 c->Request.Type.Direction = XFER_READ;
1245 c->Request.Timeout = 0;
1246 c->Request.CDB[0] = cmd;
1247 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1248 c->Request.CDB[7] = (size >> 16) & 0xFF;
1249 c->Request.CDB[8] = (size >> 8) & 0xFF;
1250 c->Request.CDB[9] = size & 0xFF;
1253 case CCISS_READ_CAPACITY:
1254 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1255 c->Header.LUN.LogDev.Mode = 1;
1256 c->Request.CDBLen = 10;
1257 c->Request.Type.Attribute = ATTR_SIMPLE;
1258 c->Request.Type.Direction = XFER_READ;
1259 c->Request.Timeout = 0;
1260 c->Request.CDB[0] = cmd;
1262 case CCISS_CACHE_FLUSH:
1263 c->Request.CDBLen = 12;
1264 c->Request.Type.Attribute = ATTR_SIMPLE;
1265 c->Request.Type.Direction = XFER_WRITE;
1266 c->Request.Timeout = 0;
1267 c->Request.CDB[0] = BMIC_WRITE;
1268 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1272 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
1275 } else if (cmd_type == TYPE_MSG) {
1277 case 3: /* No-Op message */
1278 c->Request.CDBLen = 1;
1279 c->Request.Type.Attribute = ATTR_SIMPLE;
1280 c->Request.Type.Direction = XFER_WRITE;
1281 c->Request.Timeout = 0;
1282 c->Request.CDB[0] = cmd;
1286 "cciss%d: unknown message type %d\n",
1292 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1295 /* Fill in the scatter gather information */
1297 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1298 buff, size, PCI_DMA_BIDIRECTIONAL);
1299 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1300 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1301 c->SG[0].Len = size;
1302 c->SG[0].Ext = 0; /* we are not chaining */
1306 static int sendcmd_withirq(__u8 cmd,
1310 unsigned int use_unit_num,
1311 unsigned int log_unit,
1315 ctlr_info_t *h = hba[ctlr];
1316 CommandList_struct *c;
1317 u64bit buff_dma_handle;
1318 unsigned long flags;
1320 DECLARE_COMPLETION(wait);
1322 if ((c = cmd_alloc(h , 0)) == NULL)
1324 return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1325 log_unit, page_code, NULL, cmd_type);
1326 if (return_status != IO_OK) {
1328 return return_status;
1333 /* Put the request on the tail of the queue and send it */
1334 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1338 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1340 wait_for_completion(&wait);
1342 if(c->err_info->CommandStatus != 0)
1343 { /* an error has occurred */
1344 switch(c->err_info->CommandStatus)
1346 case CMD_TARGET_STATUS:
1347 printk(KERN_WARNING "cciss: cmd %p has "
1348 " completed with errors\n", c);
1349 if( c->err_info->ScsiStatus)
1351 printk(KERN_WARNING "cciss: cmd %p "
1352 "has SCSI Status = %x\n",
1354 c->err_info->ScsiStatus);
1358 case CMD_DATA_UNDERRUN:
1359 case CMD_DATA_OVERRUN:
1360 /* expected for inquire and report lun commands */
1363 printk(KERN_WARNING "cciss: Cmd %p is "
1364 "reported invalid\n", c);
1365 return_status = IO_ERROR;
1367 case CMD_PROTOCOL_ERR:
1368 printk(KERN_WARNING "cciss: cmd %p has "
1369 "protocol error \n", c);
1370 return_status = IO_ERROR;
1372 case CMD_HARDWARE_ERR:
1373 printk(KERN_WARNING "cciss: cmd %p had "
1374 " hardware error\n", c);
1375 return_status = IO_ERROR;
1377 case CMD_CONNECTION_LOST:
1378 printk(KERN_WARNING "cciss: cmd %p had "
1379 "connection lost\n", c);
1380 return_status = IO_ERROR;
1383 printk(KERN_WARNING "cciss: cmd %p was "
1385 return_status = IO_ERROR;
1387 case CMD_ABORT_FAILED:
1388 printk(KERN_WARNING "cciss: cmd %p reports "
1389 "abort failed\n", c);
1390 return_status = IO_ERROR;
1392 case CMD_UNSOLICITED_ABORT:
1394 "cciss%d: unsolicited abort %p\n",
1396 if (c->retry_count < MAX_CMD_RETRIES) {
1398 "cciss%d: retrying %p\n",
1401 /* erase the old error information */
1402 memset(c->err_info, 0,
1403 sizeof(ErrorInfo_struct));
1404 return_status = IO_OK;
1405 INIT_COMPLETION(wait);
1408 return_status = IO_ERROR;
1411 printk(KERN_WARNING "cciss: cmd %p returned "
1412 "unknown status %x\n", c,
1413 c->err_info->CommandStatus);
1414 return_status = IO_ERROR;
1417 /* unlock the buffers from DMA */
1418 pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1419 size, PCI_DMA_BIDIRECTIONAL);
1421 return(return_status);
1424 static void cciss_geometry_inquiry(int ctlr, int logvol,
1425 int withirq, unsigned int total_size,
1426 unsigned int block_size, InquiryData_struct *inq_buff,
1427 drive_info_struct *drv)
1430 memset(inq_buff, 0, sizeof(InquiryData_struct));
1432 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1433 inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1435 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1436 sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1437 if (return_code == IO_OK) {
1438 if(inq_buff->data_byte[8] == 0xFF) {
1440 "cciss: reading geometry failed, volume "
1441 "does not support reading geometry\n");
1442 drv->block_size = block_size;
1443 drv->nr_blocks = total_size;
1445 drv->sectors = 32; // Sectors per track
1446 drv->cylinders = total_size / 255 / 32;
1450 drv->block_size = block_size;
1451 drv->nr_blocks = total_size;
1452 drv->heads = inq_buff->data_byte[6];
1453 drv->sectors = inq_buff->data_byte[7];
1454 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1455 drv->cylinders += inq_buff->data_byte[5];
1456 drv->raid_level = inq_buff->data_byte[8];
1457 t = drv->heads * drv->sectors;
1459 drv->cylinders = total_size/t;
1462 } else { /* Get geometry failed */
1463 printk(KERN_WARNING "cciss: reading geometry failed\n");
1465 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
1466 drv->heads, drv->sectors, drv->cylinders);
1469 cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1470 int withirq, unsigned int *total_size, unsigned int *block_size)
1473 memset(buf, 0, sizeof(*buf));
1475 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1476 ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1478 return_code = sendcmd(CCISS_READ_CAPACITY,
1479 ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1480 if (return_code == IO_OK) {
1481 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1482 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1483 } else { /* read capacity command failed */
1484 printk(KERN_WARNING "cciss: read capacity failed\n");
1486 *block_size = BLOCK_SIZE;
1488 printk(KERN_INFO " blocks= %u block_size= %d\n",
1489 *total_size, *block_size);
1493 static int register_new_disk(ctlr_info_t *h)
1495 struct gendisk *disk;
1500 int new_lun_found = 0;
1501 int new_lun_index = 0;
1502 int free_index_found = 0;
1504 ReportLunData_struct *ld_buff = NULL;
1505 ReadCapdata_struct *size_buff = NULL;
1506 InquiryData_struct *inq_buff = NULL;
1510 unsigned int block_size;
1511 unsigned int total_size;
1513 if (!capable(CAP_SYS_RAWIO))
1515 /* if we have no space in our disk array left to add anything */
1516 if( h->num_luns >= CISS_MAX_LUN)
1519 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1520 if (ld_buff == NULL)
1522 memset(ld_buff, 0, sizeof(ReportLunData_struct));
1523 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1524 if (size_buff == NULL)
1526 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1527 if (inq_buff == NULL)
1530 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1531 sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);
1533 if( return_code == IO_OK)
1536 // printk("LUN Data\n--------------------------\n");
1538 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
1539 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
1540 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
1541 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1542 } else /* reading number of logical volumes failed */
1544 printk(KERN_WARNING "cciss: report logical volume"
1545 " command failed\n");
1549 num_luns = listlength / 8; // 8 bytes pre entry
1550 if (num_luns > CISS_MAX_LUN)
1552 num_luns = CISS_MAX_LUN;
1555 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
1556 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
1557 ld_buff->LUNListLength[3], num_luns);
1559 for(i=0; i< num_luns; i++)
1562 int lunID_found = 0;
1564 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
1565 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
1566 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
1567 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1569 /* check to see if this is a new lun */
1570 for(j=0; j <= h->highest_lun; j++)
1573 printk("Checking %d %x against %x\n", j,h->drv[j].LunID,
1575 #endif /* CCISS_DEBUG */
1576 if (h->drv[j].LunID == lunid)
1583 if( lunID_found == 1)
1586 { /* It is the new lun we have been looking for */
1588 printk("new lun found at %d\n", i);
1589 #endif /* CCISS_DEBUG */
1597 printk(KERN_WARNING "cciss: New Logical Volume not found\n");
1600 /* Now find the free index */
1601 for(i=0; i <CISS_MAX_LUN; i++)
1604 printk("Checking Index %d\n", i);
1605 #endif /* CCISS_DEBUG */
1606 if(h->drv[i].LunID == 0)
1609 printk("free index found at %d\n", i);
1610 #endif /* CCISS_DEBUG */
1611 free_index_found = 1;
1616 if (!free_index_found)
1618 printk(KERN_WARNING "cciss: unable to find free slot for disk\n");
1622 logvol = free_index;
1623 h->drv[logvol].LunID = lunid;
1624 /* there could be gaps in lun numbers, track hightest */
1625 if(h->highest_lun < lunid)
1626 h->highest_lun = logvol;
1627 cciss_read_capacity(ctlr, logvol, size_buff, 1,
1628 &total_size, &block_size);
1629 cciss_geometry_inquiry(ctlr, logvol, 1, total_size, block_size,
1630 inq_buff, &h->drv[logvol]);
1631 h->drv[logvol].usage_count = 0;
1633 /* setup partitions per disk */
1634 disk = h->gendisk[logvol];
1635 set_capacity(disk, h->drv[logvol].nr_blocks);
1636 /* if it's the controller it's already added */
1645 printk(KERN_ERR "cciss: out of memory\n");
1651 static int cciss_revalidate(struct gendisk *disk)
1653 ctlr_info_t *h = get_host(disk);
1654 drive_info_struct *drv = get_drv(disk);
1657 unsigned int block_size;
1658 unsigned int total_size;
1659 ReadCapdata_struct *size_buff = NULL;
1660 InquiryData_struct *inq_buff = NULL;
1662 for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1664 if(h->drv[logvol].LunID == drv->LunID) {
1670 if (!FOUND) return 1;
1672 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1673 if (size_buff == NULL)
1675 printk(KERN_WARNING "cciss: out of memory\n");
1678 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1679 if (inq_buff == NULL)
1681 printk(KERN_WARNING "cciss: out of memory\n");
1686 cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1687 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1689 blk_queue_hardsect_size(h->queue, drv->block_size);
1690 set_capacity(disk, drv->nr_blocks);
1698 * Wait polling for a command to complete.
1699 * The memory mapped FIFO is polled for the completion.
1700 * Used only at init time, interrupts from the HBA are disabled.
1702 static unsigned long pollcomplete(int ctlr)
1707 /* Wait (up to 20 seconds) for a command to complete */
1709 for (i = 20 * HZ; i > 0; i--) {
1710 done = hba[ctlr]->access.command_completed(hba[ctlr]);
1711 if (done == FIFO_EMPTY) {
1712 set_current_state(TASK_UNINTERRUPTIBLE);
1713 schedule_timeout(1);
1717 /* Invalid address to tell caller we ran out of time */
1721 * Send a command to the controller, and wait for it to complete.
1722 * Only used at init time.
1729 unsigned int use_unit_num, /* 0: address the controller,
1730 1: address logical volume log_unit,
1731 2: periph device address is scsi3addr */
1732 unsigned int log_unit,
1734 unsigned char *scsi3addr,
1737 CommandList_struct *c;
1739 unsigned long complete;
1740 ctlr_info_t *info_p= hba[ctlr];
1741 u64bit buff_dma_handle;
1744 if ((c = cmd_alloc(info_p, 1)) == NULL) {
1745 printk(KERN_WARNING "cciss: unable to get memory");
1748 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1749 log_unit, page_code, scsi3addr, cmd_type);
1750 if (status != IO_OK) {
1751 cmd_free(info_p, c, 1);
1759 printk(KERN_DEBUG "cciss: turning intr off\n");
1760 #endif /* CCISS_DEBUG */
1761 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1763 /* Make sure there is room in the command FIFO */
1764 /* Actually it should be completely empty at this time. */
1765 for (i = 200000; i > 0; i--)
1767 /* if fifo isn't full go */
1768 if (!(info_p->access.fifo_full(info_p)))
1774 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
1775 " waiting!\n", ctlr);
1780 info_p->access.submit_command(info_p, c);
1781 complete = pollcomplete(ctlr);
1784 printk(KERN_DEBUG "cciss: command completed\n");
1785 #endif /* CCISS_DEBUG */
1787 if (complete != 1) {
1788 if ( (complete & CISS_ERROR_BIT)
1789 && (complete & ~CISS_ERROR_BIT) == c->busaddr)
1791 /* if data overrun or underun on Report command
1794 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
1795 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
1796 (c->Request.CDB[0] == CISS_INQUIRY)) &&
1797 ((c->err_info->CommandStatus ==
1798 CMD_DATA_OVERRUN) ||
1799 (c->err_info->CommandStatus ==
1803 complete = c->busaddr;
1805 if (c->err_info->CommandStatus ==
1806 CMD_UNSOLICITED_ABORT) {
1807 printk(KERN_WARNING "cciss%d: "
1808 "unsolicited abort %p\n",
1810 if (c->retry_count < MAX_CMD_RETRIES) {
1812 "cciss%d: retrying %p\n",
1815 /* erase the old error */
1817 memset(c->err_info, 0,
1818 sizeof(ErrorInfo_struct));
1822 "cciss%d: retried %p too "
1823 "many times\n", ctlr, c);
1828 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1829 " Error %x \n", ctlr,
1830 c->err_info->CommandStatus);
1831 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1833 " size %x\n num %x value %x\n", ctlr,
1834 c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
1835 c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
1836 c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
1841 if (complete != c->busaddr) {
1842 printk( KERN_WARNING "cciss cciss%d: SendCmd "
1843 "Invalid command list address returned! (%lx)\n",
1849 printk( KERN_WARNING
1850 "cciss cciss%d: SendCmd Timeout out, "
1851 "No command list address returned!\n",
1857 /* unlock the data buffer from DMA */
1858 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
1859 size, PCI_DMA_BIDIRECTIONAL);
1860 cmd_free(info_p, c, 1);
1864 * Map (physical) PCI mem into (virtual) kernel space
1866 static void __iomem *remap_pci_mem(ulong base, ulong size)
1868 ulong page_base = ((ulong) base) & PAGE_MASK;
1869 ulong page_offs = ((ulong) base) - page_base;
1870 void __iomem *page_remapped = ioremap(page_base, page_offs+size);
1872 return page_remapped ? (page_remapped + page_offs) : NULL;
1876 * Takes jobs of the Q and sends them to the hardware, then puts it on
1877 * the Q to wait for completion.
1879 static void start_io( ctlr_info_t *h)
1881 CommandList_struct *c;
1883 while(( c = h->reqQ) != NULL )
1885 /* can't do anything if fifo is full */
1886 if ((h->access.fifo_full(h))) {
1887 printk(KERN_WARNING "cciss: fifo full\n");
1891 /* Get the frist entry from the Request Q */
1892 removeQ(&(h->reqQ), c);
1895 /* Tell the controller execute command */
1896 h->access.submit_command(h, c);
1898 /* Put job onto the completed Q */
1899 addQ (&(h->cmpQ), c);
1903 static inline void complete_buffers(struct bio *bio, int status)
1906 struct bio *xbh = bio->bi_next;
1907 int nr_sectors = bio_sectors(bio);
1909 bio->bi_next = NULL;
1910 blk_finished_io(len);
1911 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
1916 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
1917 /* Zeros out the error record and then resends the command back */
1918 /* to the controller */
1919 static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
1921 /* erase the old error information */
1922 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
1924 /* add it to software queue and then send it to the controller */
1927 if(h->Qdepth > h->maxQsinceinit)
1928 h->maxQsinceinit = h->Qdepth;
1932 /* checks the status of the job and calls complete buffers to mark all
1933 * buffers for the completed job.
1935 static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
1946 if(cmd->err_info->CommandStatus != 0)
1947 { /* an error has occurred */
1948 switch(cmd->err_info->CommandStatus)
1950 unsigned char sense_key;
1951 case CMD_TARGET_STATUS:
1954 if( cmd->err_info->ScsiStatus == 0x02)
1956 printk(KERN_WARNING "cciss: cmd %p "
1957 "has CHECK CONDITION "
1958 " byte 2 = 0x%x\n", cmd,
1959 cmd->err_info->SenseInfo[2]
1961 /* check the sense key */
1963 cmd->err_info->SenseInfo[2];
1964 /* no status or recovered error */
1965 if((sense_key == 0x0) ||
1972 printk(KERN_WARNING "cciss: cmd %p "
1973 "has SCSI Status 0x%x\n",
1974 cmd, cmd->err_info->ScsiStatus);
1977 case CMD_DATA_UNDERRUN:
1978 printk(KERN_WARNING "cciss: cmd %p has"
1979 " completed with data underrun "
1982 case CMD_DATA_OVERRUN:
1983 printk(KERN_WARNING "cciss: cmd %p has"
1984 " completed with data overrun "
1988 printk(KERN_WARNING "cciss: cmd %p is "
1989 "reported invalid\n", cmd);
1992 case CMD_PROTOCOL_ERR:
1993 printk(KERN_WARNING "cciss: cmd %p has "
1994 "protocol error \n", cmd);
1997 case CMD_HARDWARE_ERR:
1998 printk(KERN_WARNING "cciss: cmd %p had "
1999 " hardware error\n", cmd);
2002 case CMD_CONNECTION_LOST:
2003 printk(KERN_WARNING "cciss: cmd %p had "
2004 "connection lost\n", cmd);
2008 printk(KERN_WARNING "cciss: cmd %p was "
2012 case CMD_ABORT_FAILED:
2013 printk(KERN_WARNING "cciss: cmd %p reports "
2014 "abort failed\n", cmd);
2017 case CMD_UNSOLICITED_ABORT:
2018 printk(KERN_WARNING "cciss%d: unsolicited "
2019 "abort %p\n", h->ctlr, cmd);
2020 if (cmd->retry_count < MAX_CMD_RETRIES) {
2023 "cciss%d: retrying %p\n",
2028 "cciss%d: %p retried too "
2029 "many times\n", h->ctlr, cmd);
2033 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2038 printk(KERN_WARNING "cciss: cmd %p returned "
2039 "unknown status %x\n", cmd,
2040 cmd->err_info->CommandStatus);
2044 /* We need to return this command */
2046 resend_cciss_cmd(h,cmd);
2049 /* command did not need to be retried */
2050 /* unmap the DMA mapping for all the scatter gather elements */
2051 for(i=0; i<cmd->Header.SGList; i++) {
2052 temp64.val32.lower = cmd->SG[i].Addr.lower;
2053 temp64.val32.upper = cmd->SG[i].Addr.upper;
2054 pci_unmap_page(hba[cmd->ctlr]->pdev,
2055 temp64.val, cmd->SG[i].Len,
2056 (cmd->Request.Type.Direction == XFER_READ) ?
2057 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2059 complete_buffers(cmd->rq->bio, status);
2062 printk("Done with %p\n", cmd->rq);
2063 #endif /* CCISS_DEBUG */
2065 end_that_request_last(cmd->rq);
2070 * Get a request and submit it to the controller.
2072 static void do_cciss_request(request_queue_t *q)
2074 ctlr_info_t *h= q->queuedata;
2075 CommandList_struct *c;
2077 struct request *creq;
2079 struct scatterlist tmp_sg[MAXSGENTRIES];
2080 drive_info_struct *drv;
2083 if (blk_queue_plugged(q))
2087 creq = elv_next_request(q);
2091 if (creq->nr_phys_segments > MAXSGENTRIES)
2094 if (( c = cmd_alloc(h, 1)) == NULL)
2097 blkdev_dequeue_request(creq);
2099 spin_unlock_irq(q->queue_lock);
2101 c->cmd_type = CMD_RWREQ;
2104 /* fill in the request */
2105 drv = creq->rq_disk->private_data;
2106 c->Header.ReplyQueue = 0; // unused in simple mode
2107 c->Header.Tag.lower = c->busaddr; // use the physical address the cmd block for tag
2108 c->Header.LUN.LogDev.VolId= drv->LunID;
2109 c->Header.LUN.LogDev.Mode = 1;
2110 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2111 c->Request.Type.Type = TYPE_CMD; // It is a command.
2112 c->Request.Type.Attribute = ATTR_SIMPLE;
2113 c->Request.Type.Direction =
2114 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
2115 c->Request.Timeout = 0; // Don't time out
2116 c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2117 start_blk = creq->sector;
2119 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2120 (int) creq->nr_sectors);
2121 #endif /* CCISS_DEBUG */
2123 seg = blk_rq_map_sg(q, creq, tmp_sg);
2125 /* get the DMA records for the setup */
2126 if (c->Request.Type.Direction == XFER_READ)
2127 dir = PCI_DMA_FROMDEVICE;
2129 dir = PCI_DMA_TODEVICE;
2131 for (i=0; i<seg; i++)
2133 c->SG[i].Len = tmp_sg[i].length;
2134 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2135 tmp_sg[i].offset, tmp_sg[i].length,
2137 c->SG[i].Addr.lower = temp64.val32.lower;
2138 c->SG[i].Addr.upper = temp64.val32.upper;
2139 c->SG[i].Ext = 0; // we are not chaining
2141 /* track how many SG entries we are using */
2146 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2147 #endif /* CCISS_DEBUG */
2149 c->Header.SGList = c->Header.SGTotal = seg;
2150 c->Request.CDB[1]= 0;
2151 c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB
2152 c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2153 c->Request.CDB[4]= (start_blk >> 8) & 0xff;
2154 c->Request.CDB[5]= start_blk & 0xff;
2155 c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2156 c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff;
2157 c->Request.CDB[8]= creq->nr_sectors & 0xff;
2158 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2160 spin_lock_irq(q->queue_lock);
2164 if(h->Qdepth > h->maxQsinceinit)
2165 h->maxQsinceinit = h->Qdepth;
2174 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2176 ctlr_info_t *h = dev_id;
2177 CommandList_struct *c;
2178 unsigned long flags;
2182 /* Is this interrupt for us? */
2183 if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2187 * If there are completed commands in the completion queue,
2188 * we had better do something about it.
2190 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2191 while( h->access.intr_pending(h))
2193 while((a = h->access.command_completed(h)) != FIFO_EMPTY)
2197 if ((c = h->cmpQ) == NULL)
2199 printk(KERN_WARNING "cciss: Completion of %08lx ignored\n", (unsigned long)a1);
2202 while(c->busaddr != a) {
2208 * If we've found the command, take it off the
2209 * completion Q and free it
2211 if (c->busaddr == a) {
2212 removeQ(&h->cmpQ, c);
2213 if (c->cmd_type == CMD_RWREQ) {
2214 complete_command(h, c, 0);
2215 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2216 complete(c->waiting);
2218 # ifdef CONFIG_CISS_SCSI_TAPE
2219 else if (c->cmd_type == CMD_SCSI)
2220 complete_scsi_command(c, 0, a1);
2228 * See if we can queue up some more IO
2230 blk_start_queue(h->queue);
2231 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2235 * We cannot read the structure directly, for portablity we must use
2237 * This is for debug only.
2240 static void print_cfg_table( CfgTable_struct *tb)
2245 printk("Controller Configuration information\n");
2246 printk("------------------------------------\n");
2248 temp_name[i] = readb(&(tb->Signature[i]));
2250 printk(" Signature = %s\n", temp_name);
2251 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2252 printk(" Transport methods supported = 0x%x\n",
2253 readl(&(tb-> TransportSupport)));
2254 printk(" Transport methods active = 0x%x\n",
2255 readl(&(tb->TransportActive)));
2256 printk(" Requested transport Method = 0x%x\n",
2257 readl(&(tb->HostWrite.TransportRequest)));
2258 printk(" Coalese Interrupt Delay = 0x%x\n",
2259 readl(&(tb->HostWrite.CoalIntDelay)));
2260 printk(" Coalese Interrupt Count = 0x%x\n",
2261 readl(&(tb->HostWrite.CoalIntCount)));
2262 printk(" Max outstanding commands = 0x%d\n",
2263 readl(&(tb->CmdsOutMax)));
2264 printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2266 temp_name[i] = readb(&(tb->ServerName[i]));
2267 temp_name[16] = '\0';
2268 printk(" Server Name = %s\n", temp_name);
2269 printk(" Heartbeat Counter = 0x%x\n\n\n",
2270 readl(&(tb->HeartBeat)));
2272 #endif /* CCISS_DEBUG */
2274 static void release_io_mem(ctlr_info_t *c)
2276 /* if IO mem was not protected do nothing */
2277 if( c->io_mem_addr == 0)
2279 release_region(c->io_mem_addr, c->io_mem_length);
2281 c->io_mem_length = 0;
2284 static int find_PCI_BAR_index(struct pci_dev *pdev,
2285 unsigned long pci_bar_addr)
2287 int i, offset, mem_type, bar_type;
2288 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2291 for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2292 bar_type = pci_resource_flags(pdev, i) &
2293 PCI_BASE_ADDRESS_SPACE;
2294 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2297 mem_type = pci_resource_flags(pdev, i) &
2298 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2300 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2301 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2302 offset += 4; /* 32 bit */
2304 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2307 default: /* reserved in PCI 2.2 */
2308 printk(KERN_WARNING "Base address is invalid\n");
2313 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2319 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2321 ushort subsystem_vendor_id, subsystem_device_id, command;
2322 __u32 board_id, scratchpad = 0;
2324 __u32 cfg_base_addr;
2325 __u64 cfg_base_addr_index;
2328 /* check to see if controller has been disabled */
2329 /* BEFORE trying to enable it */
2330 (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2331 if(!(command & 0x02))
2333 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2337 if (pci_enable_device(pdev))
2339 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2342 if (pci_set_dma_mask(pdev, CCISS_DMA_MASK ) != 0)
2344 printk(KERN_ERR "cciss: Unable to set DMA mask\n");
2348 subsystem_vendor_id = pdev->subsystem_vendor;
2349 subsystem_device_id = pdev->subsystem_device;
2350 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2351 subsystem_vendor_id);
2353 /* search for our IO range so we can protect it */
2354 for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2356 /* is this an IO range */
2357 if( pci_resource_flags(pdev, i) & 0x01 ) {
2358 c->io_mem_addr = pci_resource_start(pdev, i);
2359 c->io_mem_length = pci_resource_end(pdev, i) -
2360 pci_resource_start(pdev, i) +1;
2362 printk("IO value found base_addr[%d] %lx %lx\n", i,
2363 c->io_mem_addr, c->io_mem_length);
2364 #endif /* CCISS_DEBUG */
2365 /* register the IO range */
2366 if(!request_region( c->io_mem_addr,
2367 c->io_mem_length, "cciss"))
2369 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2370 c->io_mem_addr, c->io_mem_length);
2372 c->io_mem_length = 0;
2379 printk("command = %x\n", command);
2380 printk("irq = %x\n", pdev->irq);
2381 printk("board_id = %x\n", board_id);
2382 #endif /* CCISS_DEBUG */
2384 c->intr = pdev->irq;
2387 * Memory base addr is first addr , the second points to the config
2391 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2393 printk("address 0 = %x\n", c->paddr);
2394 #endif /* CCISS_DEBUG */
2395 c->vaddr = remap_pci_mem(c->paddr, 200);
2397 /* Wait for the board to become ready. (PCI hotplug needs this.)
2398 * We poll for up to 120 secs, once per 100ms. */
2399 for (i=0; i < 1200; i++) {
2400 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2401 if (scratchpad == CCISS_FIRMWARE_READY)
2403 set_current_state(TASK_INTERRUPTIBLE);
2404 schedule_timeout(HZ / 10); /* wait 100ms */
2406 if (scratchpad != CCISS_FIRMWARE_READY) {
2407 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2411 /* get the address index number */
2412 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2413 cfg_base_addr &= (__u32) 0x0000ffff;
2415 printk("cfg base address = %x\n", cfg_base_addr);
2416 #endif /* CCISS_DEBUG */
2417 cfg_base_addr_index =
2418 find_PCI_BAR_index(pdev, cfg_base_addr);
2420 printk("cfg base address index = %x\n", cfg_base_addr_index);
2421 #endif /* CCISS_DEBUG */
2422 if (cfg_base_addr_index == -1) {
2423 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2428 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2430 printk("cfg offset = %x\n", cfg_offset);
2431 #endif /* CCISS_DEBUG */
2432 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
2433 cfg_base_addr_index) + cfg_offset,
2434 sizeof(CfgTable_struct));
2435 c->board_id = board_id;
2438 print_cfg_table(c->cfgtable);
2439 #endif /* CCISS_DEBUG */
2441 for(i=0; i<NR_PRODUCTS; i++) {
2442 if (board_id == products[i].board_id) {
2443 c->product_name = products[i].product_name;
2444 c->access = *(products[i].access);
2448 if (i == NR_PRODUCTS) {
2449 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2450 " to access the Smart Array controller %08lx\n",
2451 (unsigned long)board_id);
2454 if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
2455 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2456 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2457 (readb(&c->cfgtable->Signature[3]) != 'S') )
2459 printk("Does not appear to be a valid CISS config table\n");
2465 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2467 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2469 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2474 printk("Trying to put board into Simple mode\n");
2475 #endif /* CCISS_DEBUG */
2476 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2477 /* Update the field, and then ring the doorbell */
2478 writel( CFGTBL_Trans_Simple,
2479 &(c->cfgtable->HostWrite.TransportRequest));
2480 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2482 /* under certain very rare conditions, this can take awhile.
2483 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2484 * as we enter this code.) */
2485 for(i=0;i<MAX_CONFIG_WAIT;i++) {
2486 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2488 /* delay and try again */
2489 set_current_state(TASK_INTERRUPTIBLE);
2490 schedule_timeout(10);
2494 printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2495 #endif /* CCISS_DEBUG */
2497 print_cfg_table(c->cfgtable);
2498 #endif /* CCISS_DEBUG */
2500 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2502 printk(KERN_WARNING "cciss: unable to get board into"
2511 * Gets information about the local volumes attached to the controller.
2513 static void cciss_getgeometry(int cntl_num)
2515 ReportLunData_struct *ld_buff;
2516 ReadCapdata_struct *size_buff;
2517 InquiryData_struct *inq_buff;
2525 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2526 if (ld_buff == NULL)
2528 printk(KERN_ERR "cciss: out of memory\n");
2531 memset(ld_buff, 0, sizeof(ReportLunData_struct));
2532 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2533 if (size_buff == NULL)
2535 printk(KERN_ERR "cciss: out of memory\n");
2539 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2540 if (inq_buff == NULL)
2542 printk(KERN_ERR "cciss: out of memory\n");
2547 /* Get the firmware version */
2548 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2549 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2550 if (return_code == IO_OK)
2552 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2553 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2554 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2555 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2556 } else /* send command failed */
2558 printk(KERN_WARNING "cciss: unable to determine firmware"
2559 " version of controller\n");
2561 /* Get the number of logical volumes */
2562 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2563 sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2565 if( return_code == IO_OK)
2568 printk("LUN Data\n--------------------------\n");
2569 #endif /* CCISS_DEBUG */
2571 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2572 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2573 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
2574 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2575 } else /* reading number of logical volumes failed */
2577 printk(KERN_WARNING "cciss: report logical volume"
2578 " command failed\n");
2581 hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2582 if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2584 printk(KERN_ERR "ciss: only %d number of logical volumes supported\n",
2586 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2589 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2590 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2591 ld_buff->LUNListLength[3], hba[cntl_num]->num_luns);
2592 #endif /* CCISS_DEBUG */
2594 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
2595 for(i=0; i< hba[cntl_num]->num_luns; i++)
2598 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
2599 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
2600 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
2601 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2603 hba[cntl_num]->drv[i].LunID = lunid;
2607 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
2608 ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2],
2609 ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID);
2610 #endif /* CCISS_DEBUG */
2611 cciss_read_capacity(cntl_num, i, size_buff, 0,
2612 &total_size, &block_size);
2613 cciss_geometry_inquiry(cntl_num, i, 0, total_size, block_size,
2614 inq_buff, &hba[cntl_num]->drv[i]);
2621 /* Function to find the first free pointer into our hba[] array */
2622 /* Returns -1 if no free entries are left. */
2623 static int alloc_cciss_hba(void)
2625 struct gendisk *disk[NWD];
2627 for (n = 0; n < NWD; n++) {
2628 disk[n] = alloc_disk(1 << NWD_SHIFT);
2633 for(i=0; i< MAX_CTLR; i++) {
2636 p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
2639 memset(p, 0, sizeof(ctlr_info_t));
2640 for (n = 0; n < NWD; n++)
2641 p->gendisk[n] = disk[n];
2646 printk(KERN_WARNING "cciss: This driver supports a maximum"
2647 " of 8 controllers.\n");
2650 printk(KERN_ERR "cciss: out of memory.\n");
2657 static void free_hba(int i)
2659 ctlr_info_t *p = hba[i];
2663 for (n = 0; n < NWD; n++)
2664 put_disk(p->gendisk[n]);
2669 * This is it. Find all the controllers and register them. I really hate
2670 * stealing all these major device numbers.
2671 * returns the number of block devices registered.
2673 static int __devinit cciss_init_one(struct pci_dev *pdev,
2674 const struct pci_device_id *ent)
2680 printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
2681 " bus %d dev %d func %d\n",
2682 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
2683 PCI_FUNC(pdev->devfn));
2684 i = alloc_cciss_hba();
2687 if (cciss_pci_init(hba[i], pdev) != 0)
2690 sprintf(hba[i]->devname, "cciss%d", i);
2692 hba[i]->pdev = pdev;
2694 /* configure PCI DMA stuff */
2695 if (!pci_set_dma_mask(pdev, 0xffffffffffffffffULL))
2696 printk("cciss: using DAC cycles\n");
2697 else if (!pci_set_dma_mask(pdev, 0xffffffff))
2698 printk("cciss: not using DAC cycles\n");
2700 printk("cciss: no suitable DMA available\n");
2704 if (register_blkdev(COMPAQ_CISS_MAJOR+i, hba[i]->devname)) {
2705 printk(KERN_ERR "cciss: Unable to register device %s\n",
2710 /* make sure the board interrupts are off */
2711 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
2712 if( request_irq(hba[i]->intr, do_cciss_intr,
2713 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
2714 hba[i]->devname, hba[i])) {
2715 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
2716 hba[i]->intr, hba[i]->devname);
2719 hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
2720 hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
2721 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2722 &(hba[i]->cmd_pool_dhandle));
2723 hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
2724 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2725 &(hba[i]->errinfo_pool_dhandle));
2726 if((hba[i]->cmd_pool_bits == NULL)
2727 || (hba[i]->cmd_pool == NULL)
2728 || (hba[i]->errinfo_pool == NULL)) {
2729 printk( KERN_ERR "cciss: out of memory");
2733 spin_lock_init(&hba[i]->lock);
2734 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
2738 q->backing_dev_info.ra_pages = READ_AHEAD;
2740 q->queuedata = hba[i];
2742 /* Initialize the pdev driver private data.
2743 have it point to hba[i]. */
2744 pci_set_drvdata(pdev, hba[i]);
2745 /* command and error info recs zeroed out before
2747 memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
2750 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
2751 #endif /* CCISS_DEBUG */
2753 cciss_getgeometry(i);
2755 cciss_scsi_setup(i);
2757 /* Turn the interrupts on so we can service requests */
2758 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
2762 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
2764 /* This is a hardware imposed limit. */
2765 blk_queue_max_hw_segments(q, MAXSGENTRIES);
2767 /* This is a limit in the driver and could be eliminated. */
2768 blk_queue_max_phys_segments(q, MAXSGENTRIES);
2770 blk_queue_max_sectors(q, 512);
2773 for(j=0; j<NWD; j++) {
2774 drive_info_struct *drv = &(hba[i]->drv[j]);
2775 struct gendisk *disk = hba[i]->gendisk[j];
2777 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
2778 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
2779 disk->major = COMPAQ_CISS_MAJOR + i;
2780 disk->first_minor = j << NWD_SHIFT;
2781 disk->fops = &cciss_fops;
2782 disk->queue = hba[i]->queue;
2783 disk->private_data = drv;
2784 /* we must register the controller even if no disks exist */
2785 /* this is for the online array utilities */
2786 if(!drv->heads && j)
2788 blk_queue_hardsect_size(hba[i]->queue, drv->block_size);
2789 set_capacity(disk, drv->nr_blocks);
2795 if(hba[i]->cmd_pool_bits)
2796 kfree(hba[i]->cmd_pool_bits);
2797 if(hba[i]->cmd_pool)
2798 pci_free_consistent(hba[i]->pdev,
2799 NR_CMDS * sizeof(CommandList_struct),
2800 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2801 if(hba[i]->errinfo_pool)
2802 pci_free_consistent(hba[i]->pdev,
2803 NR_CMDS * sizeof( ErrorInfo_struct),
2804 hba[i]->errinfo_pool,
2805 hba[i]->errinfo_pool_dhandle);
2806 free_irq(hba[i]->intr, hba[i]);
2808 unregister_blkdev(COMPAQ_CISS_MAJOR+i, hba[i]->devname);
2810 release_io_mem(hba[i]);
2815 static void __devexit cciss_remove_one (struct pci_dev *pdev)
2817 ctlr_info_t *tmp_ptr;
2822 if (pci_get_drvdata(pdev) == NULL)
2824 printk( KERN_ERR "cciss: Unable to remove device \n");
2827 tmp_ptr = pci_get_drvdata(pdev);
2831 printk(KERN_ERR "cciss: device appears to "
2832 "already be removed \n");
2835 /* Turn board interrupts off and send the flush cache command */
2836 /* sendcmd will turn off interrupt, and send the flush...
2837 * To write all data in the battery backed cache to disks */
2838 memset(flush_buf, 0, 4);
2839 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
2841 if(return_code != IO_OK)
2843 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
2846 free_irq(hba[i]->intr, hba[i]);
2847 pci_set_drvdata(pdev, NULL);
2848 iounmap(hba[i]->vaddr);
2849 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
2850 unregister_blkdev(COMPAQ_CISS_MAJOR+i, hba[i]->devname);
2851 remove_proc_entry(hba[i]->devname, proc_cciss);
2853 /* remove it from the disk list */
2854 for (j = 0; j < NWD; j++) {
2855 struct gendisk *disk = hba[i]->gendisk[j];
2856 if (disk->flags & GENHD_FL_UP)
2860 blk_cleanup_queue(hba[i]->queue);
2861 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2862 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2863 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2864 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
2865 kfree(hba[i]->cmd_pool_bits);
2866 release_io_mem(hba[i]);
2870 static struct pci_driver cciss_pci_driver = {
2872 .probe = cciss_init_one,
2873 .remove = __devexit_p(cciss_remove_one),
2874 .id_table = cciss_pci_device_id, /* id_table */
2878 * This is it. Register the PCI driver information for the cards we control
2879 * the OS will call our registered routines when it finds one of our cards.
2881 int __init cciss_init(void)
2883 printk(KERN_INFO DRIVER_NAME "\n");
2885 /* Register for our PCI devices */
2886 return pci_module_init(&cciss_pci_driver);
2889 static int __init init_cciss_module(void)
2891 return ( cciss_init());
2894 static void __exit cleanup_cciss_module(void)
2898 pci_unregister_driver(&cciss_pci_driver);
2899 /* double check that all controller entrys have been removed */
2900 for (i=0; i< MAX_CTLR; i++)
2904 printk(KERN_WARNING "cciss: had to remove"
2905 " controller %d\n", i);
2906 cciss_remove_one(hba[i]->pdev);
2909 remove_proc_entry("cciss", proc_root_driver);
2912 module_init(init_cciss_module);
2913 module_exit(cleanup_cciss_module);