2 * Disk Array driver for HP SA 5xxx and 6xxx Controllers
3 * Copyright 2000, 2005 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/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 2.6.6)"
51 #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,6)
53 /* Embedded module documentation macros - see modules.h */
54 MODULE_AUTHOR("Hewlett-Packard Company");
55 MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.6");
56 MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
57 " SA6i P600 P800 E400 E300");
58 MODULE_LICENSE("GPL");
60 #include "cciss_cmd.h"
62 #include <linux/cciss_ioctl.h>
64 /* define the PCI info for the cards we can control */
65 static const struct pci_device_id cciss_pci_device_id[] = {
66 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS,
67 0x0E11, 0x4070, 0, 0, 0},
68 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
69 0x0E11, 0x4080, 0, 0, 0},
70 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
71 0x0E11, 0x4082, 0, 0, 0},
72 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
73 0x0E11, 0x4083, 0, 0, 0},
74 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
75 0x0E11, 0x409A, 0, 0, 0},
76 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
77 0x0E11, 0x409B, 0, 0, 0},
78 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
79 0x0E11, 0x409C, 0, 0, 0},
80 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
81 0x0E11, 0x409D, 0, 0, 0},
82 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
83 0x0E11, 0x4091, 0, 0, 0},
84 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA,
85 0x103C, 0x3225, 0, 0, 0},
86 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSB,
87 0x103c, 0x3223, 0, 0, 0},
88 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
89 0x103c, 0x3231, 0, 0, 0},
90 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
91 0x103c, 0x3233, 0, 0, 0},
94 MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
96 #define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
98 /* board_id = Subsystem Device ID & Vendor ID
99 * product = Marketing Name for the board
100 * access = Address of the struct of function pointers
102 static struct board_type products[] = {
103 { 0x40700E11, "Smart Array 5300", &SA5_access },
104 { 0x40800E11, "Smart Array 5i", &SA5B_access},
105 { 0x40820E11, "Smart Array 532", &SA5B_access},
106 { 0x40830E11, "Smart Array 5312", &SA5B_access},
107 { 0x409A0E11, "Smart Array 641", &SA5_access},
108 { 0x409B0E11, "Smart Array 642", &SA5_access},
109 { 0x409C0E11, "Smart Array 6400", &SA5_access},
110 { 0x409D0E11, "Smart Array 6400 EM", &SA5_access},
111 { 0x40910E11, "Smart Array 6i", &SA5_access},
112 { 0x3225103C, "Smart Array P600", &SA5_access},
113 { 0x3223103C, "Smart Array P800", &SA5_access},
114 { 0x3231103C, "Smart Array E400", &SA5_access},
115 { 0x3233103C, "Smart Array E300", &SA5_access},
118 /* How long to wait (in millesconds) for board to go into simple mode */
119 #define MAX_CONFIG_WAIT 30000
120 #define MAX_IOCTL_CONFIG_WAIT 1000
122 /*define how many times we will try a command because of bus resets */
123 #define MAX_CMD_RETRIES 3
125 #define READ_AHEAD 1024
126 #define NR_CMDS 384 /* #commands that can be outstanding */
129 /* Originally cciss driver only supports 8 major numbers */
130 #define MAX_CTLR_ORIG 8
133 static ctlr_info_t *hba[MAX_CTLR];
135 static void do_cciss_request(request_queue_t *q);
136 static int cciss_open(struct inode *inode, struct file *filep);
137 static int cciss_release(struct inode *inode, struct file *filep);
138 static int cciss_ioctl(struct inode *inode, struct file *filep,
139 unsigned int cmd, unsigned long arg);
141 static int revalidate_allvol(ctlr_info_t *host);
142 static int cciss_revalidate(struct gendisk *disk);
143 static int deregister_disk(struct gendisk *disk);
144 static int register_new_disk(ctlr_info_t *h);
146 static void cciss_getgeometry(int cntl_num);
148 static void start_io( ctlr_info_t *h);
149 static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
150 unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
151 unsigned char *scsi3addr, int cmd_type);
153 #ifdef CONFIG_PROC_FS
154 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
155 int length, int *eof, void *data);
156 static void cciss_procinit(int i);
158 static void cciss_procinit(int i) {}
159 #endif /* CONFIG_PROC_FS */
162 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
165 static struct block_device_operations cciss_fops = {
166 .owner = THIS_MODULE,
168 .release = cciss_release,
169 .ioctl = cciss_ioctl,
171 .compat_ioctl = cciss_compat_ioctl,
173 .revalidate_disk= cciss_revalidate,
177 * Enqueuing and dequeuing functions for cmdlists.
179 static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
183 c->next = c->prev = c;
185 c->prev = (*Qptr)->prev;
187 (*Qptr)->prev->next = c;
192 static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
193 CommandList_struct *c)
195 if (c && c->next != c) {
196 if (*Qptr == c) *Qptr = c->next;
197 c->prev->next = c->next;
198 c->next->prev = c->prev;
205 #include "cciss_scsi.c" /* For SCSI tape support */
207 #ifdef CONFIG_PROC_FS
210 * Report information about this controller.
212 #define ENG_GIG 1000000000
213 #define ENG_GIG_FACTOR (ENG_GIG/512)
214 #define RAID_UNKNOWN 6
215 static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
218 static struct proc_dir_entry *proc_cciss;
220 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
221 int length, int *eof, void *data)
226 ctlr_info_t *h = (ctlr_info_t*)data;
227 drive_info_struct *drv;
229 sector_t vol_sz, vol_sz_frac;
233 /* prevent displaying bogus info during configuration
234 * or deconfiguration of a logical volume
236 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
237 if (h->busy_configuring) {
238 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
241 h->busy_configuring = 1;
242 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
244 size = sprintf(buffer, "%s: HP %s Controller\n"
245 "Board ID: 0x%08lx\n"
246 "Firmware Version: %c%c%c%c\n"
248 "Logical drives: %d\n"
249 "Current Q depth: %d\n"
250 "Current # commands on controller: %d\n"
251 "Max Q depth since init: %d\n"
252 "Max # commands on controller since init: %d\n"
253 "Max SG entries since init: %d\n\n",
256 (unsigned long)h->board_id,
257 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
258 (unsigned int)h->intr,
260 h->Qdepth, h->commands_outstanding,
261 h->maxQsinceinit, h->max_outstanding, h->maxSG);
263 pos += size; len += size;
264 cciss_proc_tape_report(ctlr, buffer, &pos, &len);
265 for(i=0; i<=h->highest_lun; i++) {
268 if (drv->block_size == 0)
271 vol_sz = drv->nr_blocks;
272 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
274 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
276 if (drv->raid_level > 5)
277 drv->raid_level = RAID_UNKNOWN;
278 size = sprintf(buffer+len, "cciss/c%dd%d:"
279 "\t%4u.%02uGB\tRAID %s\n",
280 ctlr, i, (int)vol_sz, (int)vol_sz_frac,
281 raid_label[drv->raid_level]);
282 pos += size; len += size;
286 *start = buffer+offset;
290 h->busy_configuring = 0;
295 cciss_proc_write(struct file *file, const char __user *buffer,
296 unsigned long count, void *data)
298 unsigned char cmd[80];
300 #ifdef CONFIG_CISS_SCSI_TAPE
301 ctlr_info_t *h = (ctlr_info_t *) data;
305 if (count > sizeof(cmd)-1) return -EINVAL;
306 if (copy_from_user(cmd, buffer, count)) return -EFAULT;
308 len = strlen(cmd); // above 3 lines ensure safety
309 if (len && cmd[len-1] == '\n')
311 # ifdef CONFIG_CISS_SCSI_TAPE
312 if (strcmp("engage scsi", cmd)==0) {
313 rc = cciss_engage_scsi(h->ctlr);
314 if (rc != 0) return -rc;
317 /* might be nice to have "disengage" too, but it's not
318 safely possible. (only 1 module use count, lock issues.) */
324 * Get us a file in /proc/cciss that says something about each controller.
325 * Create /proc/cciss if it doesn't exist yet.
327 static void __devinit cciss_procinit(int i)
329 struct proc_dir_entry *pde;
331 if (proc_cciss == NULL) {
332 proc_cciss = proc_mkdir("cciss", proc_root_driver);
337 pde = create_proc_read_entry(hba[i]->devname,
338 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
339 proc_cciss, cciss_proc_get_info, hba[i]);
340 pde->write_proc = cciss_proc_write;
342 #endif /* CONFIG_PROC_FS */
345 * For operations that cannot sleep, a command block is allocated at init,
346 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
347 * which ones are free or in use. For operations that can wait for kmalloc
348 * to possible sleep, this routine can be called with get_from_pool set to 0.
349 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
351 static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
353 CommandList_struct *c;
356 dma_addr_t cmd_dma_handle, err_dma_handle;
360 c = (CommandList_struct *) pci_alloc_consistent(
361 h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
364 memset(c, 0, sizeof(CommandList_struct));
366 c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
367 h->pdev, sizeof(ErrorInfo_struct),
370 if (c->err_info == NULL)
372 pci_free_consistent(h->pdev,
373 sizeof(CommandList_struct), c, cmd_dma_handle);
376 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
377 } else /* get it out of the controllers pool */
380 i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
383 } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
385 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
388 memset(c, 0, sizeof(CommandList_struct));
389 cmd_dma_handle = h->cmd_pool_dhandle
390 + i*sizeof(CommandList_struct);
391 c->err_info = h->errinfo_pool + i;
392 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
393 err_dma_handle = h->errinfo_pool_dhandle
394 + i*sizeof(ErrorInfo_struct);
398 c->busaddr = (__u32) cmd_dma_handle;
399 temp64.val = (__u64) err_dma_handle;
400 c->ErrDesc.Addr.lower = temp64.val32.lower;
401 c->ErrDesc.Addr.upper = temp64.val32.upper;
402 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
411 * Frees a command block that was previously allocated with cmd_alloc().
413 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
420 temp64.val32.lower = c->ErrDesc.Addr.lower;
421 temp64.val32.upper = c->ErrDesc.Addr.upper;
422 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
423 c->err_info, (dma_addr_t) temp64.val);
424 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
425 c, (dma_addr_t) c->busaddr);
429 clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
434 static inline ctlr_info_t *get_host(struct gendisk *disk)
436 return disk->queue->queuedata;
439 static inline drive_info_struct *get_drv(struct gendisk *disk)
441 return disk->private_data;
445 * Open. Make sure the device is really there.
447 static int cciss_open(struct inode *inode, struct file *filep)
449 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
450 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
453 printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
454 #endif /* CCISS_DEBUG */
457 * Root is allowed to open raw volume zero even if it's not configured
458 * so array config can still work. Root is also allowed to open any
459 * volume that has a LUN ID, so it can issue IOCTL to reread the
460 * disk information. I don't think I really like this
461 * but I'm already using way to many device nodes to claim another one
462 * for "raw controller".
464 if (drv->nr_blocks == 0) {
465 if (iminor(inode) != 0) { /* not node 0? */
466 /* if not node 0 make sure it is a partition = 0 */
467 if (iminor(inode) & 0x0f) {
469 /* if it is, make sure we have a LUN ID */
470 } else if (drv->LunID == 0) {
474 if (!capable(CAP_SYS_ADMIN))
484 static int cciss_release(struct inode *inode, struct file *filep)
486 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
487 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
490 printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
491 #endif /* CCISS_DEBUG */
500 static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
504 ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
509 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
510 static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
512 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
515 case CCISS_GETPCIINFO:
516 case CCISS_GETINTINFO:
517 case CCISS_SETINTINFO:
518 case CCISS_GETNODENAME:
519 case CCISS_SETNODENAME:
520 case CCISS_GETHEARTBEAT:
521 case CCISS_GETBUSTYPES:
522 case CCISS_GETFIRMVER:
523 case CCISS_GETDRIVVER:
524 case CCISS_REVALIDVOLS:
525 case CCISS_DEREGDISK:
526 case CCISS_REGNEWDISK:
528 case CCISS_RESCANDISK:
529 case CCISS_GETLUNINFO:
530 return do_ioctl(f, cmd, arg);
532 case CCISS_PASSTHRU32:
533 return cciss_ioctl32_passthru(f, cmd, arg);
534 case CCISS_BIG_PASSTHRU32:
535 return cciss_ioctl32_big_passthru(f, cmd, arg);
542 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
544 IOCTL32_Command_struct __user *arg32 =
545 (IOCTL32_Command_struct __user *) arg;
546 IOCTL_Command_struct arg64;
547 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
552 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
553 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
554 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
555 err |= get_user(arg64.buf_size, &arg32->buf_size);
556 err |= get_user(cp, &arg32->buf);
557 arg64.buf = compat_ptr(cp);
558 err |= copy_to_user(p, &arg64, sizeof(arg64));
563 err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
566 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
572 static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
574 BIG_IOCTL32_Command_struct __user *arg32 =
575 (BIG_IOCTL32_Command_struct __user *) arg;
576 BIG_IOCTL_Command_struct arg64;
577 BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
582 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
583 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
584 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
585 err |= get_user(arg64.buf_size, &arg32->buf_size);
586 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
587 err |= get_user(cp, &arg32->buf);
588 arg64.buf = compat_ptr(cp);
589 err |= copy_to_user(p, &arg64, sizeof(arg64));
594 err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
597 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
606 static int cciss_ioctl(struct inode *inode, struct file *filep,
607 unsigned int cmd, unsigned long arg)
609 struct block_device *bdev = inode->i_bdev;
610 struct gendisk *disk = bdev->bd_disk;
611 ctlr_info_t *host = get_host(disk);
612 drive_info_struct *drv = get_drv(disk);
613 int ctlr = host->ctlr;
614 void __user *argp = (void __user *)arg;
617 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
618 #endif /* CCISS_DEBUG */
623 struct hd_geometry driver_geo;
624 if (drv->cylinders) {
625 driver_geo.heads = drv->heads;
626 driver_geo.sectors = drv->sectors;
627 driver_geo.cylinders = drv->cylinders;
630 driver_geo.start= get_start_sect(inode->i_bdev);
631 if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry)))
636 case CCISS_GETPCIINFO:
638 cciss_pci_info_struct pciinfo;
640 if (!arg) return -EINVAL;
641 pciinfo.bus = host->pdev->bus->number;
642 pciinfo.dev_fn = host->pdev->devfn;
643 pciinfo.board_id = host->board_id;
644 if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct )))
648 case CCISS_GETINTINFO:
650 cciss_coalint_struct intinfo;
651 if (!arg) return -EINVAL;
652 intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
653 intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
654 if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
658 case CCISS_SETINTINFO:
660 cciss_coalint_struct intinfo;
664 if (!arg) return -EINVAL;
665 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
666 if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
668 if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
671 // printk("cciss_ioctl: delay and count cannot be 0\n");
674 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
675 /* Update the field, and then ring the doorbell */
676 writel( intinfo.delay,
677 &(host->cfgtable->HostWrite.CoalIntDelay));
678 writel( intinfo.count,
679 &(host->cfgtable->HostWrite.CoalIntCount));
680 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
682 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
683 if (!(readl(host->vaddr + SA5_DOORBELL)
686 /* delay and try again */
689 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
690 if (i >= MAX_IOCTL_CONFIG_WAIT)
694 case CCISS_GETNODENAME:
696 NodeName_type NodeName;
699 if (!arg) return -EINVAL;
701 NodeName[i] = readb(&host->cfgtable->ServerName[i]);
702 if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
706 case CCISS_SETNODENAME:
708 NodeName_type NodeName;
712 if (!arg) return -EINVAL;
713 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
715 if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
718 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
720 /* Update the field, and then ring the doorbell */
722 writeb( NodeName[i], &host->cfgtable->ServerName[i]);
724 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
726 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
727 if (!(readl(host->vaddr + SA5_DOORBELL)
730 /* delay and try again */
733 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
734 if (i >= MAX_IOCTL_CONFIG_WAIT)
739 case CCISS_GETHEARTBEAT:
741 Heartbeat_type heartbeat;
743 if (!arg) return -EINVAL;
744 heartbeat = readl(&host->cfgtable->HeartBeat);
745 if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
749 case CCISS_GETBUSTYPES:
751 BusTypes_type BusTypes;
753 if (!arg) return -EINVAL;
754 BusTypes = readl(&host->cfgtable->BusTypes);
755 if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
759 case CCISS_GETFIRMVER:
761 FirmwareVer_type firmware;
763 if (!arg) return -EINVAL;
764 memcpy(firmware, host->firm_ver, 4);
766 if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
770 case CCISS_GETDRIVVER:
772 DriverVer_type DriverVer = DRIVER_VERSION;
774 if (!arg) return -EINVAL;
776 if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
781 case CCISS_REVALIDVOLS:
782 if (bdev != bdev->bd_contains || drv != host->drv)
784 return revalidate_allvol(host);
786 case CCISS_GETLUNINFO: {
787 LogvolInfo_struct luninfo;
790 luninfo.LunID = drv->LunID;
791 luninfo.num_opens = drv->usage_count;
792 luninfo.num_parts = 0;
793 /* count partitions 1 to 15 with sizes > 0 */
794 for (i = 0; i < MAX_PART - 1; i++) {
797 if (disk->part[i]->nr_sects != 0)
800 if (copy_to_user(argp, &luninfo,
801 sizeof(LogvolInfo_struct)))
805 case CCISS_DEREGDISK:
806 return deregister_disk(disk);
809 return register_new_disk(host);
813 IOCTL_Command_struct iocommand;
814 CommandList_struct *c;
818 DECLARE_COMPLETION(wait);
820 if (!arg) return -EINVAL;
822 if (!capable(CAP_SYS_RAWIO)) return -EPERM;
824 if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
826 if((iocommand.buf_size < 1) &&
827 (iocommand.Request.Type.Direction != XFER_NONE))
831 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
832 /* Check kmalloc limits */
833 if(iocommand.buf_size > 128000)
836 if(iocommand.buf_size > 0)
838 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
842 if (iocommand.Request.Type.Direction == XFER_WRITE)
844 /* Copy the data into the buffer we created */
845 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
851 memset(buff, 0, iocommand.buf_size);
853 if ((c = cmd_alloc(host , 0)) == NULL)
858 // Fill in the command type
859 c->cmd_type = CMD_IOCTL_PEND;
860 // Fill in Command Header
861 c->Header.ReplyQueue = 0; // unused in simple mode
862 if( iocommand.buf_size > 0) // buffer to fill
864 c->Header.SGList = 1;
865 c->Header.SGTotal= 1;
866 } else // no buffers to fill
868 c->Header.SGList = 0;
869 c->Header.SGTotal= 0;
871 c->Header.LUN = iocommand.LUN_info;
872 c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
874 // Fill in Request block
875 c->Request = iocommand.Request;
877 // Fill in the scatter gather information
878 if (iocommand.buf_size > 0 )
880 temp64.val = pci_map_single( host->pdev, buff,
882 PCI_DMA_BIDIRECTIONAL);
883 c->SG[0].Addr.lower = temp64.val32.lower;
884 c->SG[0].Addr.upper = temp64.val32.upper;
885 c->SG[0].Len = iocommand.buf_size;
886 c->SG[0].Ext = 0; // we are not chaining
890 /* Put the request on the tail of the request queue */
891 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
892 addQ(&host->reqQ, c);
895 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
897 wait_for_completion(&wait);
899 /* unlock the buffers from DMA */
900 temp64.val32.lower = c->SG[0].Addr.lower;
901 temp64.val32.upper = c->SG[0].Addr.upper;
902 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
903 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
905 /* Copy the error information out */
906 iocommand.error_info = *(c->err_info);
907 if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
910 cmd_free(host, c, 0);
914 if (iocommand.Request.Type.Direction == XFER_READ)
916 /* Copy the data out of the buffer we created */
917 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
920 cmd_free(host, c, 0);
925 cmd_free(host, c, 0);
928 case CCISS_BIG_PASSTHRU: {
929 BIG_IOCTL_Command_struct *ioc;
930 CommandList_struct *c;
931 unsigned char **buff = NULL;
932 int *buff_size = NULL;
938 DECLARE_COMPLETION(wait);
941 BYTE __user *data_ptr;
945 if (!capable(CAP_SYS_RAWIO))
947 ioc = (BIG_IOCTL_Command_struct *)
948 kmalloc(sizeof(*ioc), GFP_KERNEL);
953 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
957 if ((ioc->buf_size < 1) &&
958 (ioc->Request.Type.Direction != XFER_NONE)) {
962 /* Check kmalloc limits using all SGs */
963 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
967 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
971 buff = (unsigned char **) kmalloc(MAXSGENTRIES *
972 sizeof(char *), GFP_KERNEL);
977 memset(buff, 0, MAXSGENTRIES);
978 buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
984 left = ioc->buf_size;
987 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
988 buff_size[sg_used] = sz;
989 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
990 if (buff[sg_used] == NULL) {
994 if (ioc->Request.Type.Direction == XFER_WRITE &&
995 copy_from_user(buff[sg_used], data_ptr, sz)) {
999 memset(buff[sg_used], 0, sz);
1005 if ((c = cmd_alloc(host , 0)) == NULL) {
1009 c->cmd_type = CMD_IOCTL_PEND;
1010 c->Header.ReplyQueue = 0;
1012 if( ioc->buf_size > 0) {
1013 c->Header.SGList = sg_used;
1014 c->Header.SGTotal= sg_used;
1016 c->Header.SGList = 0;
1017 c->Header.SGTotal= 0;
1019 c->Header.LUN = ioc->LUN_info;
1020 c->Header.Tag.lower = c->busaddr;
1022 c->Request = ioc->Request;
1023 if (ioc->buf_size > 0 ) {
1025 for(i=0; i<sg_used; i++) {
1026 temp64.val = pci_map_single( host->pdev, buff[i],
1028 PCI_DMA_BIDIRECTIONAL);
1029 c->SG[i].Addr.lower = temp64.val32.lower;
1030 c->SG[i].Addr.upper = temp64.val32.upper;
1031 c->SG[i].Len = buff_size[i];
1032 c->SG[i].Ext = 0; /* we are not chaining */
1036 /* Put the request on the tail of the request queue */
1037 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1038 addQ(&host->reqQ, c);
1041 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1042 wait_for_completion(&wait);
1043 /* unlock the buffers from DMA */
1044 for(i=0; i<sg_used; i++) {
1045 temp64.val32.lower = c->SG[i].Addr.lower;
1046 temp64.val32.upper = c->SG[i].Addr.upper;
1047 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
1048 buff_size[i], PCI_DMA_BIDIRECTIONAL);
1050 /* Copy the error information out */
1051 ioc->error_info = *(c->err_info);
1052 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1053 cmd_free(host, c, 0);
1057 if (ioc->Request.Type.Direction == XFER_READ) {
1058 /* Copy the data out of the buffer we created */
1059 BYTE __user *ptr = ioc->buf;
1060 for(i=0; i< sg_used; i++) {
1061 if (copy_to_user(ptr, buff[i], buff_size[i])) {
1062 cmd_free(host, c, 0);
1066 ptr += buff_size[i];
1069 cmd_free(host, c, 0);
1073 for(i=0; i<sg_used; i++)
1091 * revalidate_allvol is for online array config utilities. After a
1092 * utility reconfigures the drives in the array, it can use this function
1093 * (through an ioctl) to make the driver zap any previous disk structs for
1094 * that controller and get new ones.
1096 * Right now I'm using the getgeometry() function to do this, but this
1097 * function should probably be finer grained and allow you to revalidate one
1098 * particualar logical volume (instead of all of them on a particular
1101 static int revalidate_allvol(ctlr_info_t *host)
1103 int ctlr = host->ctlr, i;
1104 unsigned long flags;
1106 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1107 if (host->usage_count > 1) {
1108 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1109 printk(KERN_WARNING "cciss: Device busy for volume"
1110 " revalidation (usage=%d)\n", host->usage_count);
1113 host->usage_count++;
1114 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1116 for(i=0; i< NWD; i++) {
1117 struct gendisk *disk = host->gendisk[i];
1118 if (disk->flags & GENHD_FL_UP)
1123 * Set the partition and block size structures for all volumes
1124 * on this controller to zero. We will reread all of this data
1126 memset(host->drv, 0, sizeof(drive_info_struct)
1129 * Tell the array controller not to give us any interrupts while
1130 * we check the new geometry. Then turn interrupts back on when
1133 host->access.set_intr_mask(host, CCISS_INTR_OFF);
1134 cciss_getgeometry(ctlr);
1135 host->access.set_intr_mask(host, CCISS_INTR_ON);
1137 /* Loop through each real device */
1138 for (i = 0; i < NWD; i++) {
1139 struct gendisk *disk = host->gendisk[i];
1140 drive_info_struct *drv = &(host->drv[i]);
1141 /* we must register the controller even if no disks exist */
1142 /* this is for the online array utilities */
1143 if (!drv->heads && i)
1145 blk_queue_hardsect_size(host->queue, drv->block_size);
1146 set_capacity(disk, drv->nr_blocks);
1149 host->usage_count--;
1153 static int deregister_disk(struct gendisk *disk)
1155 unsigned long flags;
1156 ctlr_info_t *h = get_host(disk);
1157 drive_info_struct *drv = get_drv(disk);
1160 if (!capable(CAP_SYS_RAWIO))
1163 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1164 /* make sure logical volume is NOT is use */
1165 if( drv->usage_count > 1) {
1166 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1170 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1172 /* invalidate the devices and deregister the disk */
1173 if (disk->flags & GENHD_FL_UP)
1175 /* check to see if it was the last disk */
1176 if (drv == h->drv + h->highest_lun) {
1177 /* if so, find the new hightest lun */
1178 int i, newhighest =-1;
1179 for(i=0; i<h->highest_lun; i++) {
1180 /* if the disk has size > 0, it is available */
1181 if (h->drv[i].nr_blocks)
1184 h->highest_lun = newhighest;
1188 /* zero out the disk size info */
1190 drv->block_size = 0;
1195 static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
1197 unsigned int use_unit_num, /* 0: address the controller,
1198 1: address logical volume log_unit,
1199 2: periph device address is scsi3addr */
1200 unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
1203 ctlr_info_t *h= hba[ctlr];
1204 u64bit buff_dma_handle;
1207 c->cmd_type = CMD_IOCTL_PEND;
1208 c->Header.ReplyQueue = 0;
1210 c->Header.SGList = 1;
1211 c->Header.SGTotal= 1;
1213 c->Header.SGList = 0;
1214 c->Header.SGTotal= 0;
1216 c->Header.Tag.lower = c->busaddr;
1218 c->Request.Type.Type = cmd_type;
1219 if (cmd_type == TYPE_CMD) {
1222 /* If the logical unit number is 0 then, this is going
1223 to controller so It's a physical command
1224 mode = 0 target = 0. So we have nothing to write.
1225 otherwise, if use_unit_num == 1,
1226 mode = 1(volume set addressing) target = LUNID
1227 otherwise, if use_unit_num == 2,
1228 mode = 0(periph dev addr) target = scsi3addr */
1229 if (use_unit_num == 1) {
1230 c->Header.LUN.LogDev.VolId=
1231 h->drv[log_unit].LunID;
1232 c->Header.LUN.LogDev.Mode = 1;
1233 } else if (use_unit_num == 2) {
1234 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
1235 c->Header.LUN.LogDev.Mode = 0;
1237 /* are we trying to read a vital product page */
1238 if(page_code != 0) {
1239 c->Request.CDB[1] = 0x01;
1240 c->Request.CDB[2] = page_code;
1242 c->Request.CDBLen = 6;
1243 c->Request.Type.Attribute = ATTR_SIMPLE;
1244 c->Request.Type.Direction = XFER_READ;
1245 c->Request.Timeout = 0;
1246 c->Request.CDB[0] = CISS_INQUIRY;
1247 c->Request.CDB[4] = size & 0xFF;
1249 case CISS_REPORT_LOG:
1250 case CISS_REPORT_PHYS:
1251 /* Talking to controller so It's a physical command
1252 mode = 00 target = 0. Nothing to write.
1254 c->Request.CDBLen = 12;
1255 c->Request.Type.Attribute = ATTR_SIMPLE;
1256 c->Request.Type.Direction = XFER_READ;
1257 c->Request.Timeout = 0;
1258 c->Request.CDB[0] = cmd;
1259 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1260 c->Request.CDB[7] = (size >> 16) & 0xFF;
1261 c->Request.CDB[8] = (size >> 8) & 0xFF;
1262 c->Request.CDB[9] = size & 0xFF;
1265 case CCISS_READ_CAPACITY:
1266 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1267 c->Header.LUN.LogDev.Mode = 1;
1268 c->Request.CDBLen = 10;
1269 c->Request.Type.Attribute = ATTR_SIMPLE;
1270 c->Request.Type.Direction = XFER_READ;
1271 c->Request.Timeout = 0;
1272 c->Request.CDB[0] = cmd;
1274 case CCISS_CACHE_FLUSH:
1275 c->Request.CDBLen = 12;
1276 c->Request.Type.Attribute = ATTR_SIMPLE;
1277 c->Request.Type.Direction = XFER_WRITE;
1278 c->Request.Timeout = 0;
1279 c->Request.CDB[0] = BMIC_WRITE;
1280 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1284 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
1287 } else if (cmd_type == TYPE_MSG) {
1289 case 3: /* No-Op message */
1290 c->Request.CDBLen = 1;
1291 c->Request.Type.Attribute = ATTR_SIMPLE;
1292 c->Request.Type.Direction = XFER_WRITE;
1293 c->Request.Timeout = 0;
1294 c->Request.CDB[0] = cmd;
1298 "cciss%d: unknown message type %d\n",
1304 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1307 /* Fill in the scatter gather information */
1309 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1310 buff, size, PCI_DMA_BIDIRECTIONAL);
1311 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1312 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1313 c->SG[0].Len = size;
1314 c->SG[0].Ext = 0; /* we are not chaining */
1318 static int sendcmd_withirq(__u8 cmd,
1322 unsigned int use_unit_num,
1323 unsigned int log_unit,
1327 ctlr_info_t *h = hba[ctlr];
1328 CommandList_struct *c;
1329 u64bit buff_dma_handle;
1330 unsigned long flags;
1332 DECLARE_COMPLETION(wait);
1334 if ((c = cmd_alloc(h , 0)) == NULL)
1336 return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1337 log_unit, page_code, NULL, cmd_type);
1338 if (return_status != IO_OK) {
1340 return return_status;
1345 /* Put the request on the tail of the queue and send it */
1346 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1350 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1352 wait_for_completion(&wait);
1354 if(c->err_info->CommandStatus != 0)
1355 { /* an error has occurred */
1356 switch(c->err_info->CommandStatus)
1358 case CMD_TARGET_STATUS:
1359 printk(KERN_WARNING "cciss: cmd %p has "
1360 " completed with errors\n", c);
1361 if( c->err_info->ScsiStatus)
1363 printk(KERN_WARNING "cciss: cmd %p "
1364 "has SCSI Status = %x\n",
1366 c->err_info->ScsiStatus);
1370 case CMD_DATA_UNDERRUN:
1371 case CMD_DATA_OVERRUN:
1372 /* expected for inquire and report lun commands */
1375 printk(KERN_WARNING "cciss: Cmd %p is "
1376 "reported invalid\n", c);
1377 return_status = IO_ERROR;
1379 case CMD_PROTOCOL_ERR:
1380 printk(KERN_WARNING "cciss: cmd %p has "
1381 "protocol error \n", c);
1382 return_status = IO_ERROR;
1384 case CMD_HARDWARE_ERR:
1385 printk(KERN_WARNING "cciss: cmd %p had "
1386 " hardware error\n", c);
1387 return_status = IO_ERROR;
1389 case CMD_CONNECTION_LOST:
1390 printk(KERN_WARNING "cciss: cmd %p had "
1391 "connection lost\n", c);
1392 return_status = IO_ERROR;
1395 printk(KERN_WARNING "cciss: cmd %p was "
1397 return_status = IO_ERROR;
1399 case CMD_ABORT_FAILED:
1400 printk(KERN_WARNING "cciss: cmd %p reports "
1401 "abort failed\n", c);
1402 return_status = IO_ERROR;
1404 case CMD_UNSOLICITED_ABORT:
1406 "cciss%d: unsolicited abort %p\n",
1408 if (c->retry_count < MAX_CMD_RETRIES) {
1410 "cciss%d: retrying %p\n",
1413 /* erase the old error information */
1414 memset(c->err_info, 0,
1415 sizeof(ErrorInfo_struct));
1416 return_status = IO_OK;
1417 INIT_COMPLETION(wait);
1420 return_status = IO_ERROR;
1423 printk(KERN_WARNING "cciss: cmd %p returned "
1424 "unknown status %x\n", c,
1425 c->err_info->CommandStatus);
1426 return_status = IO_ERROR;
1429 /* unlock the buffers from DMA */
1430 pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1431 size, PCI_DMA_BIDIRECTIONAL);
1433 return(return_status);
1436 static void cciss_geometry_inquiry(int ctlr, int logvol,
1437 int withirq, unsigned int total_size,
1438 unsigned int block_size, InquiryData_struct *inq_buff,
1439 drive_info_struct *drv)
1442 memset(inq_buff, 0, sizeof(InquiryData_struct));
1444 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1445 inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1447 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1448 sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1449 if (return_code == IO_OK) {
1450 if(inq_buff->data_byte[8] == 0xFF) {
1452 "cciss: reading geometry failed, volume "
1453 "does not support reading geometry\n");
1454 drv->block_size = block_size;
1455 drv->nr_blocks = total_size;
1457 drv->sectors = 32; // Sectors per track
1458 drv->cylinders = total_size / 255 / 32;
1462 drv->block_size = block_size;
1463 drv->nr_blocks = total_size;
1464 drv->heads = inq_buff->data_byte[6];
1465 drv->sectors = inq_buff->data_byte[7];
1466 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1467 drv->cylinders += inq_buff->data_byte[5];
1468 drv->raid_level = inq_buff->data_byte[8];
1469 t = drv->heads * drv->sectors;
1471 drv->cylinders = total_size/t;
1474 } else { /* Get geometry failed */
1475 printk(KERN_WARNING "cciss: reading geometry failed\n");
1477 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
1478 drv->heads, drv->sectors, drv->cylinders);
1481 cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1482 int withirq, unsigned int *total_size, unsigned int *block_size)
1485 memset(buf, 0, sizeof(*buf));
1487 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1488 ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1490 return_code = sendcmd(CCISS_READ_CAPACITY,
1491 ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1492 if (return_code == IO_OK) {
1493 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1494 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1495 } else { /* read capacity command failed */
1496 printk(KERN_WARNING "cciss: read capacity failed\n");
1498 *block_size = BLOCK_SIZE;
1500 printk(KERN_INFO " blocks= %u block_size= %d\n",
1501 *total_size, *block_size);
1505 static int register_new_disk(ctlr_info_t *h)
1507 struct gendisk *disk;
1512 int new_lun_found = 0;
1513 int new_lun_index = 0;
1514 int free_index_found = 0;
1516 ReportLunData_struct *ld_buff = NULL;
1517 ReadCapdata_struct *size_buff = NULL;
1518 InquiryData_struct *inq_buff = NULL;
1522 unsigned int block_size;
1523 unsigned int total_size;
1525 if (!capable(CAP_SYS_RAWIO))
1527 /* if we have no space in our disk array left to add anything */
1528 if( h->num_luns >= CISS_MAX_LUN)
1531 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1532 if (ld_buff == NULL)
1534 memset(ld_buff, 0, sizeof(ReportLunData_struct));
1535 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1536 if (size_buff == NULL)
1538 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1539 if (inq_buff == NULL)
1542 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1543 sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);
1545 if( return_code == IO_OK)
1548 // printk("LUN Data\n--------------------------\n");
1550 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
1551 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
1552 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
1553 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1554 } else /* reading number of logical volumes failed */
1556 printk(KERN_WARNING "cciss: report logical volume"
1557 " command failed\n");
1561 num_luns = listlength / 8; // 8 bytes pre entry
1562 if (num_luns > CISS_MAX_LUN)
1564 num_luns = CISS_MAX_LUN;
1567 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
1568 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
1569 ld_buff->LUNListLength[3], num_luns);
1571 for(i=0; i< num_luns; i++)
1574 int lunID_found = 0;
1576 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
1577 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
1578 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
1579 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1581 /* check to see if this is a new lun */
1582 for(j=0; j <= h->highest_lun; j++)
1585 printk("Checking %d %x against %x\n", j,h->drv[j].LunID,
1587 #endif /* CCISS_DEBUG */
1588 if (h->drv[j].LunID == lunid)
1595 if( lunID_found == 1)
1598 { /* It is the new lun we have been looking for */
1600 printk("new lun found at %d\n", i);
1601 #endif /* CCISS_DEBUG */
1609 printk(KERN_WARNING "cciss: New Logical Volume not found\n");
1612 /* Now find the free index */
1613 for(i=0; i <CISS_MAX_LUN; i++)
1616 printk("Checking Index %d\n", i);
1617 #endif /* CCISS_DEBUG */
1618 if(h->drv[i].LunID == 0)
1621 printk("free index found at %d\n", i);
1622 #endif /* CCISS_DEBUG */
1623 free_index_found = 1;
1628 if (!free_index_found)
1630 printk(KERN_WARNING "cciss: unable to find free slot for disk\n");
1634 logvol = free_index;
1635 h->drv[logvol].LunID = lunid;
1636 /* there could be gaps in lun numbers, track hightest */
1637 if(h->highest_lun < lunid)
1638 h->highest_lun = logvol;
1639 cciss_read_capacity(ctlr, logvol, size_buff, 1,
1640 &total_size, &block_size);
1641 cciss_geometry_inquiry(ctlr, logvol, 1, total_size, block_size,
1642 inq_buff, &h->drv[logvol]);
1643 h->drv[logvol].usage_count = 0;
1645 /* setup partitions per disk */
1646 disk = h->gendisk[logvol];
1647 set_capacity(disk, h->drv[logvol].nr_blocks);
1648 /* if it's the controller it's already added */
1657 printk(KERN_ERR "cciss: out of memory\n");
1663 static int cciss_revalidate(struct gendisk *disk)
1665 ctlr_info_t *h = get_host(disk);
1666 drive_info_struct *drv = get_drv(disk);
1669 unsigned int block_size;
1670 unsigned int total_size;
1671 ReadCapdata_struct *size_buff = NULL;
1672 InquiryData_struct *inq_buff = NULL;
1674 for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1676 if(h->drv[logvol].LunID == drv->LunID) {
1682 if (!FOUND) return 1;
1684 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1685 if (size_buff == NULL)
1687 printk(KERN_WARNING "cciss: out of memory\n");
1690 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1691 if (inq_buff == NULL)
1693 printk(KERN_WARNING "cciss: out of memory\n");
1698 cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1699 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1701 blk_queue_hardsect_size(h->queue, drv->block_size);
1702 set_capacity(disk, drv->nr_blocks);
1710 * Wait polling for a command to complete.
1711 * The memory mapped FIFO is polled for the completion.
1712 * Used only at init time, interrupts from the HBA are disabled.
1714 static unsigned long pollcomplete(int ctlr)
1719 /* Wait (up to 20 seconds) for a command to complete */
1721 for (i = 20 * HZ; i > 0; i--) {
1722 done = hba[ctlr]->access.command_completed(hba[ctlr]);
1723 if (done == FIFO_EMPTY) {
1724 set_current_state(TASK_UNINTERRUPTIBLE);
1725 schedule_timeout(1);
1729 /* Invalid address to tell caller we ran out of time */
1733 * Send a command to the controller, and wait for it to complete.
1734 * Only used at init time.
1741 unsigned int use_unit_num, /* 0: address the controller,
1742 1: address logical volume log_unit,
1743 2: periph device address is scsi3addr */
1744 unsigned int log_unit,
1746 unsigned char *scsi3addr,
1749 CommandList_struct *c;
1751 unsigned long complete;
1752 ctlr_info_t *info_p= hba[ctlr];
1753 u64bit buff_dma_handle;
1756 if ((c = cmd_alloc(info_p, 1)) == NULL) {
1757 printk(KERN_WARNING "cciss: unable to get memory");
1760 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1761 log_unit, page_code, scsi3addr, cmd_type);
1762 if (status != IO_OK) {
1763 cmd_free(info_p, c, 1);
1771 printk(KERN_DEBUG "cciss: turning intr off\n");
1772 #endif /* CCISS_DEBUG */
1773 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1775 /* Make sure there is room in the command FIFO */
1776 /* Actually it should be completely empty at this time. */
1777 for (i = 200000; i > 0; i--)
1779 /* if fifo isn't full go */
1780 if (!(info_p->access.fifo_full(info_p)))
1786 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
1787 " waiting!\n", ctlr);
1792 info_p->access.submit_command(info_p, c);
1793 complete = pollcomplete(ctlr);
1796 printk(KERN_DEBUG "cciss: command completed\n");
1797 #endif /* CCISS_DEBUG */
1799 if (complete != 1) {
1800 if ( (complete & CISS_ERROR_BIT)
1801 && (complete & ~CISS_ERROR_BIT) == c->busaddr)
1803 /* if data overrun or underun on Report command
1806 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
1807 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
1808 (c->Request.CDB[0] == CISS_INQUIRY)) &&
1809 ((c->err_info->CommandStatus ==
1810 CMD_DATA_OVERRUN) ||
1811 (c->err_info->CommandStatus ==
1815 complete = c->busaddr;
1817 if (c->err_info->CommandStatus ==
1818 CMD_UNSOLICITED_ABORT) {
1819 printk(KERN_WARNING "cciss%d: "
1820 "unsolicited abort %p\n",
1822 if (c->retry_count < MAX_CMD_RETRIES) {
1824 "cciss%d: retrying %p\n",
1827 /* erase the old error */
1829 memset(c->err_info, 0,
1830 sizeof(ErrorInfo_struct));
1834 "cciss%d: retried %p too "
1835 "many times\n", ctlr, c);
1840 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1841 " Error %x \n", ctlr,
1842 c->err_info->CommandStatus);
1843 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1845 " size %x\n num %x value %x\n", ctlr,
1846 c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
1847 c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
1848 c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
1853 if (complete != c->busaddr) {
1854 printk( KERN_WARNING "cciss cciss%d: SendCmd "
1855 "Invalid command list address returned! (%lx)\n",
1861 printk( KERN_WARNING
1862 "cciss cciss%d: SendCmd Timeout out, "
1863 "No command list address returned!\n",
1869 /* unlock the data buffer from DMA */
1870 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
1871 size, PCI_DMA_BIDIRECTIONAL);
1872 cmd_free(info_p, c, 1);
1876 * Map (physical) PCI mem into (virtual) kernel space
1878 static void __iomem *remap_pci_mem(ulong base, ulong size)
1880 ulong page_base = ((ulong) base) & PAGE_MASK;
1881 ulong page_offs = ((ulong) base) - page_base;
1882 void __iomem *page_remapped = ioremap(page_base, page_offs+size);
1884 return page_remapped ? (page_remapped + page_offs) : NULL;
1888 * Takes jobs of the Q and sends them to the hardware, then puts it on
1889 * the Q to wait for completion.
1891 static void start_io( ctlr_info_t *h)
1893 CommandList_struct *c;
1895 while(( c = h->reqQ) != NULL )
1897 /* can't do anything if fifo is full */
1898 if ((h->access.fifo_full(h))) {
1899 printk(KERN_WARNING "cciss: fifo full\n");
1903 /* Get the frist entry from the Request Q */
1904 removeQ(&(h->reqQ), c);
1907 /* Tell the controller execute command */
1908 h->access.submit_command(h, c);
1910 /* Put job onto the completed Q */
1911 addQ (&(h->cmpQ), c);
1915 static inline void complete_buffers(struct bio *bio, int status)
1918 struct bio *xbh = bio->bi_next;
1919 int nr_sectors = bio_sectors(bio);
1921 bio->bi_next = NULL;
1922 blk_finished_io(len);
1923 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
1928 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
1929 /* Zeros out the error record and then resends the command back */
1930 /* to the controller */
1931 static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
1933 /* erase the old error information */
1934 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
1936 /* add it to software queue and then send it to the controller */
1939 if(h->Qdepth > h->maxQsinceinit)
1940 h->maxQsinceinit = h->Qdepth;
1944 /* checks the status of the job and calls complete buffers to mark all
1945 * buffers for the completed job.
1947 static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
1958 if(cmd->err_info->CommandStatus != 0)
1959 { /* an error has occurred */
1960 switch(cmd->err_info->CommandStatus)
1962 unsigned char sense_key;
1963 case CMD_TARGET_STATUS:
1966 if( cmd->err_info->ScsiStatus == 0x02)
1968 printk(KERN_WARNING "cciss: cmd %p "
1969 "has CHECK CONDITION "
1970 " byte 2 = 0x%x\n", cmd,
1971 cmd->err_info->SenseInfo[2]
1973 /* check the sense key */
1975 cmd->err_info->SenseInfo[2];
1976 /* no status or recovered error */
1977 if((sense_key == 0x0) ||
1984 printk(KERN_WARNING "cciss: cmd %p "
1985 "has SCSI Status 0x%x\n",
1986 cmd, cmd->err_info->ScsiStatus);
1989 case CMD_DATA_UNDERRUN:
1990 printk(KERN_WARNING "cciss: cmd %p has"
1991 " completed with data underrun "
1994 case CMD_DATA_OVERRUN:
1995 printk(KERN_WARNING "cciss: cmd %p has"
1996 " completed with data overrun "
2000 printk(KERN_WARNING "cciss: cmd %p is "
2001 "reported invalid\n", cmd);
2004 case CMD_PROTOCOL_ERR:
2005 printk(KERN_WARNING "cciss: cmd %p has "
2006 "protocol error \n", cmd);
2009 case CMD_HARDWARE_ERR:
2010 printk(KERN_WARNING "cciss: cmd %p had "
2011 " hardware error\n", cmd);
2014 case CMD_CONNECTION_LOST:
2015 printk(KERN_WARNING "cciss: cmd %p had "
2016 "connection lost\n", cmd);
2020 printk(KERN_WARNING "cciss: cmd %p was "
2024 case CMD_ABORT_FAILED:
2025 printk(KERN_WARNING "cciss: cmd %p reports "
2026 "abort failed\n", cmd);
2029 case CMD_UNSOLICITED_ABORT:
2030 printk(KERN_WARNING "cciss%d: unsolicited "
2031 "abort %p\n", h->ctlr, cmd);
2032 if (cmd->retry_count < MAX_CMD_RETRIES) {
2035 "cciss%d: retrying %p\n",
2040 "cciss%d: %p retried too "
2041 "many times\n", h->ctlr, cmd);
2045 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2050 printk(KERN_WARNING "cciss: cmd %p returned "
2051 "unknown status %x\n", cmd,
2052 cmd->err_info->CommandStatus);
2056 /* We need to return this command */
2058 resend_cciss_cmd(h,cmd);
2061 /* command did not need to be retried */
2062 /* unmap the DMA mapping for all the scatter gather elements */
2063 for(i=0; i<cmd->Header.SGList; i++) {
2064 temp64.val32.lower = cmd->SG[i].Addr.lower;
2065 temp64.val32.upper = cmd->SG[i].Addr.upper;
2066 pci_unmap_page(hba[cmd->ctlr]->pdev,
2067 temp64.val, cmd->SG[i].Len,
2068 (cmd->Request.Type.Direction == XFER_READ) ?
2069 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2071 complete_buffers(cmd->rq->bio, status);
2074 printk("Done with %p\n", cmd->rq);
2075 #endif /* CCISS_DEBUG */
2077 end_that_request_last(cmd->rq);
2082 * Get a request and submit it to the controller.
2084 static void do_cciss_request(request_queue_t *q)
2086 ctlr_info_t *h= q->queuedata;
2087 CommandList_struct *c;
2089 struct request *creq;
2091 struct scatterlist tmp_sg[MAXSGENTRIES];
2092 drive_info_struct *drv;
2095 /* We call start_io here in case there is a command waiting on the
2096 * queue that has not been sent.
2098 if (blk_queue_plugged(q))
2102 creq = elv_next_request(q);
2106 if (creq->nr_phys_segments > MAXSGENTRIES)
2109 if (( c = cmd_alloc(h, 1)) == NULL)
2112 blkdev_dequeue_request(creq);
2114 spin_unlock_irq(q->queue_lock);
2116 c->cmd_type = CMD_RWREQ;
2119 /* fill in the request */
2120 drv = creq->rq_disk->private_data;
2121 c->Header.ReplyQueue = 0; // unused in simple mode
2122 c->Header.Tag.lower = c->busaddr; // use the physical address the cmd block for tag
2123 c->Header.LUN.LogDev.VolId= drv->LunID;
2124 c->Header.LUN.LogDev.Mode = 1;
2125 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2126 c->Request.Type.Type = TYPE_CMD; // It is a command.
2127 c->Request.Type.Attribute = ATTR_SIMPLE;
2128 c->Request.Type.Direction =
2129 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
2130 c->Request.Timeout = 0; // Don't time out
2131 c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2132 start_blk = creq->sector;
2134 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2135 (int) creq->nr_sectors);
2136 #endif /* CCISS_DEBUG */
2138 seg = blk_rq_map_sg(q, creq, tmp_sg);
2140 /* get the DMA records for the setup */
2141 if (c->Request.Type.Direction == XFER_READ)
2142 dir = PCI_DMA_FROMDEVICE;
2144 dir = PCI_DMA_TODEVICE;
2146 for (i=0; i<seg; i++)
2148 c->SG[i].Len = tmp_sg[i].length;
2149 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2150 tmp_sg[i].offset, tmp_sg[i].length,
2152 c->SG[i].Addr.lower = temp64.val32.lower;
2153 c->SG[i].Addr.upper = temp64.val32.upper;
2154 c->SG[i].Ext = 0; // we are not chaining
2156 /* track how many SG entries we are using */
2161 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2162 #endif /* CCISS_DEBUG */
2164 c->Header.SGList = c->Header.SGTotal = seg;
2165 c->Request.CDB[1]= 0;
2166 c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB
2167 c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2168 c->Request.CDB[4]= (start_blk >> 8) & 0xff;
2169 c->Request.CDB[5]= start_blk & 0xff;
2170 c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2171 c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff;
2172 c->Request.CDB[8]= creq->nr_sectors & 0xff;
2173 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2175 spin_lock_irq(q->queue_lock);
2179 if(h->Qdepth > h->maxQsinceinit)
2180 h->maxQsinceinit = h->Qdepth;
2186 /* We will already have the driver lock here so not need
2192 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2194 ctlr_info_t *h = dev_id;
2195 CommandList_struct *c;
2196 unsigned long flags;
2199 int start_queue = h->next_to_run;
2201 /* Is this interrupt for us? */
2202 if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2206 * If there are completed commands in the completion queue,
2207 * we had better do something about it.
2209 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2210 while( h->access.intr_pending(h))
2212 while((a = h->access.command_completed(h)) != FIFO_EMPTY)
2216 if ((c = h->cmpQ) == NULL)
2218 printk(KERN_WARNING "cciss: Completion of %08lx ignored\n", (unsigned long)a1);
2221 while(c->busaddr != a) {
2227 * If we've found the command, take it off the
2228 * completion Q and free it
2230 if (c->busaddr == a) {
2231 removeQ(&h->cmpQ, c);
2232 if (c->cmd_type == CMD_RWREQ) {
2233 complete_command(h, c, 0);
2234 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2235 complete(c->waiting);
2237 # ifdef CONFIG_CISS_SCSI_TAPE
2238 else if (c->cmd_type == CMD_SCSI)
2239 complete_scsi_command(c, 0, a1);
2246 /* check to see if we have maxed out the number of commands that can
2247 * be placed on the queue. If so then exit. We do this check here
2248 * in case the interrupt we serviced was from an ioctl and did not
2249 * free any new commands.
2251 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2254 /* We have room on the queue for more commands. Now we need to queue
2255 * them up. We will also keep track of the next queue to run so
2256 * that every queue gets a chance to be started first.
2258 for (j=0; j < NWD; j++){
2259 int curr_queue = (start_queue + j) % NWD;
2260 /* make sure the disk has been added and the drive is real
2261 * because this can be called from the middle of init_one.
2263 if(!(h->gendisk[curr_queue]->queue) ||
2264 !(h->drv[curr_queue].heads))
2266 blk_start_queue(h->gendisk[curr_queue]->queue);
2268 /* check to see if we have maxed out the number of commands
2269 * that can be placed on the queue.
2271 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2273 if (curr_queue == start_queue){
2274 h->next_to_run = (start_queue + 1) % NWD;
2277 h->next_to_run = curr_queue;
2281 curr_queue = (curr_queue + 1) % NWD;
2286 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2291 * We cannot read the structure directly, for portablity we must use
2293 * This is for debug only.
2296 static void print_cfg_table( CfgTable_struct *tb)
2301 printk("Controller Configuration information\n");
2302 printk("------------------------------------\n");
2304 temp_name[i] = readb(&(tb->Signature[i]));
2306 printk(" Signature = %s\n", temp_name);
2307 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2308 printk(" Transport methods supported = 0x%x\n",
2309 readl(&(tb-> TransportSupport)));
2310 printk(" Transport methods active = 0x%x\n",
2311 readl(&(tb->TransportActive)));
2312 printk(" Requested transport Method = 0x%x\n",
2313 readl(&(tb->HostWrite.TransportRequest)));
2314 printk(" Coalese Interrupt Delay = 0x%x\n",
2315 readl(&(tb->HostWrite.CoalIntDelay)));
2316 printk(" Coalese Interrupt Count = 0x%x\n",
2317 readl(&(tb->HostWrite.CoalIntCount)));
2318 printk(" Max outstanding commands = 0x%d\n",
2319 readl(&(tb->CmdsOutMax)));
2320 printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2322 temp_name[i] = readb(&(tb->ServerName[i]));
2323 temp_name[16] = '\0';
2324 printk(" Server Name = %s\n", temp_name);
2325 printk(" Heartbeat Counter = 0x%x\n\n\n",
2326 readl(&(tb->HeartBeat)));
2328 #endif /* CCISS_DEBUG */
2330 static void release_io_mem(ctlr_info_t *c)
2332 /* if IO mem was not protected do nothing */
2333 if( c->io_mem_addr == 0)
2335 release_region(c->io_mem_addr, c->io_mem_length);
2337 c->io_mem_length = 0;
2340 static int find_PCI_BAR_index(struct pci_dev *pdev,
2341 unsigned long pci_bar_addr)
2343 int i, offset, mem_type, bar_type;
2344 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2347 for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2348 bar_type = pci_resource_flags(pdev, i) &
2349 PCI_BASE_ADDRESS_SPACE;
2350 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2353 mem_type = pci_resource_flags(pdev, i) &
2354 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2356 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2357 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2358 offset += 4; /* 32 bit */
2360 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2363 default: /* reserved in PCI 2.2 */
2364 printk(KERN_WARNING "Base address is invalid\n");
2369 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2375 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2377 ushort subsystem_vendor_id, subsystem_device_id, command;
2378 __u32 board_id, scratchpad = 0;
2380 __u32 cfg_base_addr;
2381 __u64 cfg_base_addr_index;
2384 /* check to see if controller has been disabled */
2385 /* BEFORE trying to enable it */
2386 (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2387 if(!(command & 0x02))
2389 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2393 if (pci_enable_device(pdev))
2395 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2399 subsystem_vendor_id = pdev->subsystem_vendor;
2400 subsystem_device_id = pdev->subsystem_device;
2401 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2402 subsystem_vendor_id);
2404 /* search for our IO range so we can protect it */
2405 for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2407 /* is this an IO range */
2408 if( pci_resource_flags(pdev, i) & 0x01 ) {
2409 c->io_mem_addr = pci_resource_start(pdev, i);
2410 c->io_mem_length = pci_resource_end(pdev, i) -
2411 pci_resource_start(pdev, i) +1;
2413 printk("IO value found base_addr[%d] %lx %lx\n", i,
2414 c->io_mem_addr, c->io_mem_length);
2415 #endif /* CCISS_DEBUG */
2416 /* register the IO range */
2417 if(!request_region( c->io_mem_addr,
2418 c->io_mem_length, "cciss"))
2420 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2421 c->io_mem_addr, c->io_mem_length);
2423 c->io_mem_length = 0;
2430 printk("command = %x\n", command);
2431 printk("irq = %x\n", pdev->irq);
2432 printk("board_id = %x\n", board_id);
2433 #endif /* CCISS_DEBUG */
2435 c->intr = pdev->irq;
2438 * Memory base addr is first addr , the second points to the config
2442 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2444 printk("address 0 = %x\n", c->paddr);
2445 #endif /* CCISS_DEBUG */
2446 c->vaddr = remap_pci_mem(c->paddr, 200);
2448 /* Wait for the board to become ready. (PCI hotplug needs this.)
2449 * We poll for up to 120 secs, once per 100ms. */
2450 for (i=0; i < 1200; i++) {
2451 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2452 if (scratchpad == CCISS_FIRMWARE_READY)
2454 set_current_state(TASK_INTERRUPTIBLE);
2455 schedule_timeout(HZ / 10); /* wait 100ms */
2457 if (scratchpad != CCISS_FIRMWARE_READY) {
2458 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2462 /* get the address index number */
2463 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2464 cfg_base_addr &= (__u32) 0x0000ffff;
2466 printk("cfg base address = %x\n", cfg_base_addr);
2467 #endif /* CCISS_DEBUG */
2468 cfg_base_addr_index =
2469 find_PCI_BAR_index(pdev, cfg_base_addr);
2471 printk("cfg base address index = %x\n", cfg_base_addr_index);
2472 #endif /* CCISS_DEBUG */
2473 if (cfg_base_addr_index == -1) {
2474 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2479 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2481 printk("cfg offset = %x\n", cfg_offset);
2482 #endif /* CCISS_DEBUG */
2483 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
2484 cfg_base_addr_index) + cfg_offset,
2485 sizeof(CfgTable_struct));
2486 c->board_id = board_id;
2489 print_cfg_table(c->cfgtable);
2490 #endif /* CCISS_DEBUG */
2492 for(i=0; i<NR_PRODUCTS; i++) {
2493 if (board_id == products[i].board_id) {
2494 c->product_name = products[i].product_name;
2495 c->access = *(products[i].access);
2499 if (i == NR_PRODUCTS) {
2500 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2501 " to access the Smart Array controller %08lx\n",
2502 (unsigned long)board_id);
2505 if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
2506 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2507 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2508 (readb(&c->cfgtable->Signature[3]) != 'S') )
2510 printk("Does not appear to be a valid CISS config table\n");
2516 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2518 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2520 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2525 printk("Trying to put board into Simple mode\n");
2526 #endif /* CCISS_DEBUG */
2527 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2528 /* Update the field, and then ring the doorbell */
2529 writel( CFGTBL_Trans_Simple,
2530 &(c->cfgtable->HostWrite.TransportRequest));
2531 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2533 /* under certain very rare conditions, this can take awhile.
2534 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2535 * as we enter this code.) */
2536 for(i=0;i<MAX_CONFIG_WAIT;i++) {
2537 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2539 /* delay and try again */
2540 set_current_state(TASK_INTERRUPTIBLE);
2541 schedule_timeout(10);
2545 printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2546 #endif /* CCISS_DEBUG */
2548 print_cfg_table(c->cfgtable);
2549 #endif /* CCISS_DEBUG */
2551 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2553 printk(KERN_WARNING "cciss: unable to get board into"
2562 * Gets information about the local volumes attached to the controller.
2564 static void cciss_getgeometry(int cntl_num)
2566 ReportLunData_struct *ld_buff;
2567 ReadCapdata_struct *size_buff;
2568 InquiryData_struct *inq_buff;
2576 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2577 if (ld_buff == NULL)
2579 printk(KERN_ERR "cciss: out of memory\n");
2582 memset(ld_buff, 0, sizeof(ReportLunData_struct));
2583 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2584 if (size_buff == NULL)
2586 printk(KERN_ERR "cciss: out of memory\n");
2590 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2591 if (inq_buff == NULL)
2593 printk(KERN_ERR "cciss: out of memory\n");
2598 /* Get the firmware version */
2599 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2600 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2601 if (return_code == IO_OK)
2603 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2604 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2605 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2606 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2607 } else /* send command failed */
2609 printk(KERN_WARNING "cciss: unable to determine firmware"
2610 " version of controller\n");
2612 /* Get the number of logical volumes */
2613 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2614 sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2616 if( return_code == IO_OK)
2619 printk("LUN Data\n--------------------------\n");
2620 #endif /* CCISS_DEBUG */
2622 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2623 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2624 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
2625 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2626 } else /* reading number of logical volumes failed */
2628 printk(KERN_WARNING "cciss: report logical volume"
2629 " command failed\n");
2632 hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2633 if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2635 printk(KERN_ERR "ciss: only %d number of logical volumes supported\n",
2637 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2640 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2641 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2642 ld_buff->LUNListLength[3], hba[cntl_num]->num_luns);
2643 #endif /* CCISS_DEBUG */
2645 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
2646 for(i=0; i< hba[cntl_num]->num_luns; i++)
2649 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
2650 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
2651 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
2652 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2654 hba[cntl_num]->drv[i].LunID = lunid;
2658 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
2659 ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2],
2660 ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID);
2661 #endif /* CCISS_DEBUG */
2662 cciss_read_capacity(cntl_num, i, size_buff, 0,
2663 &total_size, &block_size);
2664 cciss_geometry_inquiry(cntl_num, i, 0, total_size, block_size,
2665 inq_buff, &hba[cntl_num]->drv[i]);
2672 /* Function to find the first free pointer into our hba[] array */
2673 /* Returns -1 if no free entries are left. */
2674 static int alloc_cciss_hba(void)
2676 struct gendisk *disk[NWD];
2678 for (n = 0; n < NWD; n++) {
2679 disk[n] = alloc_disk(1 << NWD_SHIFT);
2684 for(i=0; i< MAX_CTLR; i++) {
2687 p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
2690 memset(p, 0, sizeof(ctlr_info_t));
2691 for (n = 0; n < NWD; n++)
2692 p->gendisk[n] = disk[n];
2697 printk(KERN_WARNING "cciss: This driver supports a maximum"
2698 " of %d controllers.\n", MAX_CTLR);
2701 printk(KERN_ERR "cciss: out of memory.\n");
2708 static void free_hba(int i)
2710 ctlr_info_t *p = hba[i];
2714 for (n = 0; n < NWD; n++)
2715 put_disk(p->gendisk[n]);
2720 * This is it. Find all the controllers and register them. I really hate
2721 * stealing all these major device numbers.
2722 * returns the number of block devices registered.
2724 static int __devinit cciss_init_one(struct pci_dev *pdev,
2725 const struct pci_device_id *ent)
2732 printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
2733 " bus %d dev %d func %d\n",
2734 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
2735 PCI_FUNC(pdev->devfn));
2736 i = alloc_cciss_hba();
2739 if (cciss_pci_init(hba[i], pdev) != 0)
2742 sprintf(hba[i]->devname, "cciss%d", i);
2744 hba[i]->pdev = pdev;
2746 /* configure PCI DMA stuff */
2747 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
2748 printk("cciss: using DAC cycles\n");
2749 else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2750 printk("cciss: not using DAC cycles\n");
2752 printk("cciss: no suitable DMA available\n");
2757 * register with the major number, or get a dynamic major number
2758 * by passing 0 as argument. This is done for greater than
2759 * 8 controller support.
2761 if (i < MAX_CTLR_ORIG)
2762 hba[i]->major = MAJOR_NR + i;
2763 rc = register_blkdev(hba[i]->major, hba[i]->devname);
2764 if(rc == -EBUSY || rc == -EINVAL) {
2766 "cciss: Unable to get major number %d for %s "
2767 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
2771 if (i >= MAX_CTLR_ORIG)
2775 /* make sure the board interrupts are off */
2776 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
2777 if( request_irq(hba[i]->intr, do_cciss_intr,
2778 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
2779 hba[i]->devname, hba[i])) {
2780 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
2781 hba[i]->intr, hba[i]->devname);
2784 hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
2785 hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
2786 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2787 &(hba[i]->cmd_pool_dhandle));
2788 hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
2789 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2790 &(hba[i]->errinfo_pool_dhandle));
2791 if((hba[i]->cmd_pool_bits == NULL)
2792 || (hba[i]->cmd_pool == NULL)
2793 || (hba[i]->errinfo_pool == NULL)) {
2794 printk( KERN_ERR "cciss: out of memory");
2798 spin_lock_init(&hba[i]->lock);
2799 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
2803 q->backing_dev_info.ra_pages = READ_AHEAD;
2805 q->queuedata = hba[i];
2807 /* Initialize the pdev driver private data.
2808 have it point to hba[i]. */
2809 pci_set_drvdata(pdev, hba[i]);
2810 /* command and error info recs zeroed out before
2812 memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
2815 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
2816 #endif /* CCISS_DEBUG */
2818 cciss_getgeometry(i);
2820 cciss_scsi_setup(i);
2822 /* Turn the interrupts on so we can service requests */
2823 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
2827 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
2829 /* This is a hardware imposed limit. */
2830 blk_queue_max_hw_segments(q, MAXSGENTRIES);
2832 /* This is a limit in the driver and could be eliminated. */
2833 blk_queue_max_phys_segments(q, MAXSGENTRIES);
2835 blk_queue_max_sectors(q, 512);
2838 for(j=0; j<NWD; j++) {
2839 drive_info_struct *drv = &(hba[i]->drv[j]);
2840 struct gendisk *disk = hba[i]->gendisk[j];
2842 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
2843 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
2844 disk->major = hba[i]->major;
2845 disk->first_minor = j << NWD_SHIFT;
2846 disk->fops = &cciss_fops;
2847 disk->queue = hba[i]->queue;
2848 disk->private_data = drv;
2849 /* we must register the controller even if no disks exist */
2850 /* this is for the online array utilities */
2851 if(!drv->heads && j)
2853 blk_queue_hardsect_size(hba[i]->queue, drv->block_size);
2854 set_capacity(disk, drv->nr_blocks);
2860 if(hba[i]->cmd_pool_bits)
2861 kfree(hba[i]->cmd_pool_bits);
2862 if(hba[i]->cmd_pool)
2863 pci_free_consistent(hba[i]->pdev,
2864 NR_CMDS * sizeof(CommandList_struct),
2865 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2866 if(hba[i]->errinfo_pool)
2867 pci_free_consistent(hba[i]->pdev,
2868 NR_CMDS * sizeof( ErrorInfo_struct),
2869 hba[i]->errinfo_pool,
2870 hba[i]->errinfo_pool_dhandle);
2871 free_irq(hba[i]->intr, hba[i]);
2873 unregister_blkdev(hba[i]->major, hba[i]->devname);
2875 release_io_mem(hba[i]);
2880 static void __devexit cciss_remove_one (struct pci_dev *pdev)
2882 ctlr_info_t *tmp_ptr;
2887 if (pci_get_drvdata(pdev) == NULL)
2889 printk( KERN_ERR "cciss: Unable to remove device \n");
2892 tmp_ptr = pci_get_drvdata(pdev);
2896 printk(KERN_ERR "cciss: device appears to "
2897 "already be removed \n");
2900 /* Turn board interrupts off and send the flush cache command */
2901 /* sendcmd will turn off interrupt, and send the flush...
2902 * To write all data in the battery backed cache to disks */
2903 memset(flush_buf, 0, 4);
2904 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
2906 if(return_code != IO_OK)
2908 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
2911 free_irq(hba[i]->intr, hba[i]);
2912 pci_set_drvdata(pdev, NULL);
2913 iounmap(hba[i]->vaddr);
2914 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
2915 unregister_blkdev(hba[i]->major, hba[i]->devname);
2916 remove_proc_entry(hba[i]->devname, proc_cciss);
2918 /* remove it from the disk list */
2919 for (j = 0; j < NWD; j++) {
2920 struct gendisk *disk = hba[i]->gendisk[j];
2921 if (disk->flags & GENHD_FL_UP)
2925 blk_cleanup_queue(hba[i]->queue);
2926 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2927 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2928 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2929 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
2930 kfree(hba[i]->cmd_pool_bits);
2931 release_io_mem(hba[i]);
2935 static struct pci_driver cciss_pci_driver = {
2937 .probe = cciss_init_one,
2938 .remove = __devexit_p(cciss_remove_one),
2939 .id_table = cciss_pci_device_id, /* id_table */
2943 * This is it. Register the PCI driver information for the cards we control
2944 * the OS will call our registered routines when it finds one of our cards.
2946 static int __init cciss_init(void)
2948 printk(KERN_INFO DRIVER_NAME "\n");
2950 /* Register for our PCI devices */
2951 return pci_module_init(&cciss_pci_driver);
2954 static void __exit cciss_cleanup(void)
2958 pci_unregister_driver(&cciss_pci_driver);
2959 /* double check that all controller entrys have been removed */
2960 for (i=0; i< MAX_CTLR; i++)
2964 printk(KERN_WARNING "cciss: had to remove"
2965 " controller %d\n", i);
2966 cciss_remove_one(hba[i]->pdev);
2969 remove_proc_entry("cciss", proc_root_driver);
2972 module_init(cciss_init);
2973 module_exit(cciss_cleanup);