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 2.6.8)"
51 #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,8)
53 /* Embedded module documentation macros - see modules.h */
54 MODULE_AUTHOR("Hewlett-Packard Company");
55 MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.8");
56 MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
57 " SA6i P600 P800 P400 P400i E200 E200i");
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_CISSC,
87 0x103c, 0x3223, 0, 0, 0},
88 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
89 0x103c, 0x3234, 0, 0, 0},
90 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
91 0x103c, 0x3235, 0, 0, 0},
92 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
93 0x103c, 0x3211, 0, 0, 0},
94 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
95 0x103c, 0x3212, 0, 0, 0},
96 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
97 0x103c, 0x3213, 0, 0, 0},
98 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
99 0x103c, 0x3214, 0, 0, 0},
100 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
101 0x103c, 0x3215, 0, 0, 0},
104 MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
106 #define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
108 /* board_id = Subsystem Device ID & Vendor ID
109 * product = Marketing Name for the board
110 * access = Address of the struct of function pointers
112 static struct board_type products[] = {
113 { 0x40700E11, "Smart Array 5300", &SA5_access },
114 { 0x40800E11, "Smart Array 5i", &SA5B_access},
115 { 0x40820E11, "Smart Array 532", &SA5B_access},
116 { 0x40830E11, "Smart Array 5312", &SA5B_access},
117 { 0x409A0E11, "Smart Array 641", &SA5_access},
118 { 0x409B0E11, "Smart Array 642", &SA5_access},
119 { 0x409C0E11, "Smart Array 6400", &SA5_access},
120 { 0x409D0E11, "Smart Array 6400 EM", &SA5_access},
121 { 0x40910E11, "Smart Array 6i", &SA5_access},
122 { 0x3225103C, "Smart Array P600", &SA5_access},
123 { 0x3223103C, "Smart Array P800", &SA5_access},
124 { 0x3234103C, "Smart Array P400", &SA5_access},
125 { 0x3235103C, "Smart Array P400i", &SA5_access},
126 { 0x3211103C, "Smart Array E200i", &SA5_access},
127 { 0x3212103C, "Smart Array E200", &SA5_access},
128 { 0x3213103C, "Smart Array E200i", &SA5_access},
129 { 0x3214103C, "Smart Array E200i", &SA5_access},
130 { 0x3215103C, "Smart Array E200i", &SA5_access},
133 /* How long to wait (in millesconds) for board to go into simple mode */
134 #define MAX_CONFIG_WAIT 30000
135 #define MAX_IOCTL_CONFIG_WAIT 1000
137 /*define how many times we will try a command because of bus resets */
138 #define MAX_CMD_RETRIES 3
140 #define READ_AHEAD 1024
141 #define NR_CMDS 384 /* #commands that can be outstanding */
144 /* Originally cciss driver only supports 8 major numbers */
145 #define MAX_CTLR_ORIG 8
148 static ctlr_info_t *hba[MAX_CTLR];
150 static void do_cciss_request(request_queue_t *q);
151 static int cciss_open(struct inode *inode, struct file *filep);
152 static int cciss_release(struct inode *inode, struct file *filep);
153 static int cciss_ioctl(struct inode *inode, struct file *filep,
154 unsigned int cmd, unsigned long arg);
156 static int revalidate_allvol(ctlr_info_t *host);
157 static int cciss_revalidate(struct gendisk *disk);
158 static int deregister_disk(struct gendisk *disk);
159 static int register_new_disk(ctlr_info_t *h);
161 static void cciss_getgeometry(int cntl_num);
163 static void start_io( ctlr_info_t *h);
164 static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
165 unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
166 unsigned char *scsi3addr, int cmd_type);
168 #ifdef CONFIG_PROC_FS
169 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
170 int length, int *eof, void *data);
171 static void cciss_procinit(int i);
173 static void cciss_procinit(int i) {}
174 #endif /* CONFIG_PROC_FS */
177 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
180 static struct block_device_operations cciss_fops = {
181 .owner = THIS_MODULE,
183 .release = cciss_release,
184 .ioctl = cciss_ioctl,
186 .compat_ioctl = cciss_compat_ioctl,
188 .revalidate_disk= cciss_revalidate,
192 * Enqueuing and dequeuing functions for cmdlists.
194 static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
198 c->next = c->prev = c;
200 c->prev = (*Qptr)->prev;
202 (*Qptr)->prev->next = c;
207 static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
208 CommandList_struct *c)
210 if (c && c->next != c) {
211 if (*Qptr == c) *Qptr = c->next;
212 c->prev->next = c->next;
213 c->next->prev = c->prev;
220 #include "cciss_scsi.c" /* For SCSI tape support */
222 #ifdef CONFIG_PROC_FS
225 * Report information about this controller.
227 #define ENG_GIG 1000000000
228 #define ENG_GIG_FACTOR (ENG_GIG/512)
229 #define RAID_UNKNOWN 6
230 static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
233 static struct proc_dir_entry *proc_cciss;
235 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
236 int length, int *eof, void *data)
241 ctlr_info_t *h = (ctlr_info_t*)data;
242 drive_info_struct *drv;
244 sector_t vol_sz, vol_sz_frac;
248 /* prevent displaying bogus info during configuration
249 * or deconfiguration of a logical volume
251 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
252 if (h->busy_configuring) {
253 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
256 h->busy_configuring = 1;
257 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
259 size = sprintf(buffer, "%s: HP %s Controller\n"
260 "Board ID: 0x%08lx\n"
261 "Firmware Version: %c%c%c%c\n"
263 "Logical drives: %d\n"
264 "Current Q depth: %d\n"
265 "Current # commands on controller: %d\n"
266 "Max Q depth since init: %d\n"
267 "Max # commands on controller since init: %d\n"
268 "Max SG entries since init: %d\n\n",
271 (unsigned long)h->board_id,
272 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
273 (unsigned int)h->intr,
275 h->Qdepth, h->commands_outstanding,
276 h->maxQsinceinit, h->max_outstanding, h->maxSG);
278 pos += size; len += size;
279 cciss_proc_tape_report(ctlr, buffer, &pos, &len);
280 for(i=0; i<=h->highest_lun; i++) {
283 if (drv->block_size == 0)
286 vol_sz = drv->nr_blocks;
287 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
289 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
291 if (drv->raid_level > 5)
292 drv->raid_level = RAID_UNKNOWN;
293 size = sprintf(buffer+len, "cciss/c%dd%d:"
294 "\t%4u.%02uGB\tRAID %s\n",
295 ctlr, i, (int)vol_sz, (int)vol_sz_frac,
296 raid_label[drv->raid_level]);
297 pos += size; len += size;
301 *start = buffer+offset;
305 h->busy_configuring = 0;
310 cciss_proc_write(struct file *file, const char __user *buffer,
311 unsigned long count, void *data)
313 unsigned char cmd[80];
315 #ifdef CONFIG_CISS_SCSI_TAPE
316 ctlr_info_t *h = (ctlr_info_t *) data;
320 if (count > sizeof(cmd)-1) return -EINVAL;
321 if (copy_from_user(cmd, buffer, count)) return -EFAULT;
323 len = strlen(cmd); // above 3 lines ensure safety
324 if (len && cmd[len-1] == '\n')
326 # ifdef CONFIG_CISS_SCSI_TAPE
327 if (strcmp("engage scsi", cmd)==0) {
328 rc = cciss_engage_scsi(h->ctlr);
329 if (rc != 0) return -rc;
332 /* might be nice to have "disengage" too, but it's not
333 safely possible. (only 1 module use count, lock issues.) */
339 * Get us a file in /proc/cciss that says something about each controller.
340 * Create /proc/cciss if it doesn't exist yet.
342 static void __devinit cciss_procinit(int i)
344 struct proc_dir_entry *pde;
346 if (proc_cciss == NULL) {
347 proc_cciss = proc_mkdir("cciss", proc_root_driver);
352 pde = create_proc_read_entry(hba[i]->devname,
353 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
354 proc_cciss, cciss_proc_get_info, hba[i]);
355 pde->write_proc = cciss_proc_write;
357 #endif /* CONFIG_PROC_FS */
360 * For operations that cannot sleep, a command block is allocated at init,
361 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
362 * which ones are free or in use. For operations that can wait for kmalloc
363 * to possible sleep, this routine can be called with get_from_pool set to 0.
364 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
366 static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
368 CommandList_struct *c;
371 dma_addr_t cmd_dma_handle, err_dma_handle;
375 c = (CommandList_struct *) pci_alloc_consistent(
376 h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
379 memset(c, 0, sizeof(CommandList_struct));
381 c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
382 h->pdev, sizeof(ErrorInfo_struct),
385 if (c->err_info == NULL)
387 pci_free_consistent(h->pdev,
388 sizeof(CommandList_struct), c, cmd_dma_handle);
391 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
392 } else /* get it out of the controllers pool */
395 i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
398 } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
400 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
403 memset(c, 0, sizeof(CommandList_struct));
404 cmd_dma_handle = h->cmd_pool_dhandle
405 + i*sizeof(CommandList_struct);
406 c->err_info = h->errinfo_pool + i;
407 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
408 err_dma_handle = h->errinfo_pool_dhandle
409 + i*sizeof(ErrorInfo_struct);
413 c->busaddr = (__u32) cmd_dma_handle;
414 temp64.val = (__u64) err_dma_handle;
415 c->ErrDesc.Addr.lower = temp64.val32.lower;
416 c->ErrDesc.Addr.upper = temp64.val32.upper;
417 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
426 * Frees a command block that was previously allocated with cmd_alloc().
428 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
435 temp64.val32.lower = c->ErrDesc.Addr.lower;
436 temp64.val32.upper = c->ErrDesc.Addr.upper;
437 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
438 c->err_info, (dma_addr_t) temp64.val);
439 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
440 c, (dma_addr_t) c->busaddr);
444 clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
449 static inline ctlr_info_t *get_host(struct gendisk *disk)
451 return disk->queue->queuedata;
454 static inline drive_info_struct *get_drv(struct gendisk *disk)
456 return disk->private_data;
460 * Open. Make sure the device is really there.
462 static int cciss_open(struct inode *inode, struct file *filep)
464 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
465 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
468 printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
469 #endif /* CCISS_DEBUG */
472 * Root is allowed to open raw volume zero even if it's not configured
473 * so array config can still work. Root is also allowed to open any
474 * volume that has a LUN ID, so it can issue IOCTL to reread the
475 * disk information. I don't think I really like this
476 * but I'm already using way to many device nodes to claim another one
477 * for "raw controller".
479 if (drv->nr_blocks == 0) {
480 if (iminor(inode) != 0) { /* not node 0? */
481 /* if not node 0 make sure it is a partition = 0 */
482 if (iminor(inode) & 0x0f) {
484 /* if it is, make sure we have a LUN ID */
485 } else if (drv->LunID == 0) {
489 if (!capable(CAP_SYS_ADMIN))
499 static int cciss_release(struct inode *inode, struct file *filep)
501 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
502 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
505 printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
506 #endif /* CCISS_DEBUG */
515 static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
519 ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
524 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
525 static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
527 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
530 case CCISS_GETPCIINFO:
531 case CCISS_GETINTINFO:
532 case CCISS_SETINTINFO:
533 case CCISS_GETNODENAME:
534 case CCISS_SETNODENAME:
535 case CCISS_GETHEARTBEAT:
536 case CCISS_GETBUSTYPES:
537 case CCISS_GETFIRMVER:
538 case CCISS_GETDRIVVER:
539 case CCISS_REVALIDVOLS:
540 case CCISS_DEREGDISK:
541 case CCISS_REGNEWDISK:
543 case CCISS_RESCANDISK:
544 case CCISS_GETLUNINFO:
545 return do_ioctl(f, cmd, arg);
547 case CCISS_PASSTHRU32:
548 return cciss_ioctl32_passthru(f, cmd, arg);
549 case CCISS_BIG_PASSTHRU32:
550 return cciss_ioctl32_big_passthru(f, cmd, arg);
557 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
559 IOCTL32_Command_struct __user *arg32 =
560 (IOCTL32_Command_struct __user *) arg;
561 IOCTL_Command_struct arg64;
562 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
567 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
568 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
569 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
570 err |= get_user(arg64.buf_size, &arg32->buf_size);
571 err |= get_user(cp, &arg32->buf);
572 arg64.buf = compat_ptr(cp);
573 err |= copy_to_user(p, &arg64, sizeof(arg64));
578 err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
581 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
587 static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
589 BIG_IOCTL32_Command_struct __user *arg32 =
590 (BIG_IOCTL32_Command_struct __user *) arg;
591 BIG_IOCTL_Command_struct arg64;
592 BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
597 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
598 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
599 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
600 err |= get_user(arg64.buf_size, &arg32->buf_size);
601 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
602 err |= get_user(cp, &arg32->buf);
603 arg64.buf = compat_ptr(cp);
604 err |= copy_to_user(p, &arg64, sizeof(arg64));
609 err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
612 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
621 static int cciss_ioctl(struct inode *inode, struct file *filep,
622 unsigned int cmd, unsigned long arg)
624 struct block_device *bdev = inode->i_bdev;
625 struct gendisk *disk = bdev->bd_disk;
626 ctlr_info_t *host = get_host(disk);
627 drive_info_struct *drv = get_drv(disk);
628 int ctlr = host->ctlr;
629 void __user *argp = (void __user *)arg;
632 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
633 #endif /* CCISS_DEBUG */
638 struct hd_geometry driver_geo;
639 if (drv->cylinders) {
640 driver_geo.heads = drv->heads;
641 driver_geo.sectors = drv->sectors;
642 driver_geo.cylinders = drv->cylinders;
645 driver_geo.start= get_start_sect(inode->i_bdev);
646 if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry)))
651 case CCISS_GETPCIINFO:
653 cciss_pci_info_struct pciinfo;
655 if (!arg) return -EINVAL;
656 pciinfo.domain = pci_domain_nr(host->pdev->bus);
657 pciinfo.bus = host->pdev->bus->number;
658 pciinfo.dev_fn = host->pdev->devfn;
659 pciinfo.board_id = host->board_id;
660 if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct )))
664 case CCISS_GETINTINFO:
666 cciss_coalint_struct intinfo;
667 if (!arg) return -EINVAL;
668 intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
669 intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
670 if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
674 case CCISS_SETINTINFO:
676 cciss_coalint_struct intinfo;
680 if (!arg) return -EINVAL;
681 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
682 if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
684 if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
687 // printk("cciss_ioctl: delay and count cannot be 0\n");
690 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
691 /* Update the field, and then ring the doorbell */
692 writel( intinfo.delay,
693 &(host->cfgtable->HostWrite.CoalIntDelay));
694 writel( intinfo.count,
695 &(host->cfgtable->HostWrite.CoalIntCount));
696 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
698 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
699 if (!(readl(host->vaddr + SA5_DOORBELL)
702 /* delay and try again */
705 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
706 if (i >= MAX_IOCTL_CONFIG_WAIT)
710 case CCISS_GETNODENAME:
712 NodeName_type NodeName;
715 if (!arg) return -EINVAL;
717 NodeName[i] = readb(&host->cfgtable->ServerName[i]);
718 if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
722 case CCISS_SETNODENAME:
724 NodeName_type NodeName;
728 if (!arg) return -EINVAL;
729 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
731 if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
734 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
736 /* Update the field, and then ring the doorbell */
738 writeb( NodeName[i], &host->cfgtable->ServerName[i]);
740 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
742 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
743 if (!(readl(host->vaddr + SA5_DOORBELL)
746 /* delay and try again */
749 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
750 if (i >= MAX_IOCTL_CONFIG_WAIT)
755 case CCISS_GETHEARTBEAT:
757 Heartbeat_type heartbeat;
759 if (!arg) return -EINVAL;
760 heartbeat = readl(&host->cfgtable->HeartBeat);
761 if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
765 case CCISS_GETBUSTYPES:
767 BusTypes_type BusTypes;
769 if (!arg) return -EINVAL;
770 BusTypes = readl(&host->cfgtable->BusTypes);
771 if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
775 case CCISS_GETFIRMVER:
777 FirmwareVer_type firmware;
779 if (!arg) return -EINVAL;
780 memcpy(firmware, host->firm_ver, 4);
782 if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
786 case CCISS_GETDRIVVER:
788 DriverVer_type DriverVer = DRIVER_VERSION;
790 if (!arg) return -EINVAL;
792 if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
797 case CCISS_REVALIDVOLS:
798 if (bdev != bdev->bd_contains || drv != host->drv)
800 return revalidate_allvol(host);
802 case CCISS_GETLUNINFO: {
803 LogvolInfo_struct luninfo;
805 luninfo.LunID = drv->LunID;
806 luninfo.num_opens = drv->usage_count;
807 luninfo.num_parts = 0;
808 if (copy_to_user(argp, &luninfo,
809 sizeof(LogvolInfo_struct)))
813 case CCISS_DEREGDISK:
814 return deregister_disk(disk);
817 return register_new_disk(host);
821 IOCTL_Command_struct iocommand;
822 CommandList_struct *c;
826 DECLARE_COMPLETION(wait);
828 if (!arg) return -EINVAL;
830 if (!capable(CAP_SYS_RAWIO)) return -EPERM;
832 if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
834 if((iocommand.buf_size < 1) &&
835 (iocommand.Request.Type.Direction != XFER_NONE))
839 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
840 /* Check kmalloc limits */
841 if(iocommand.buf_size > 128000)
844 if(iocommand.buf_size > 0)
846 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
850 if (iocommand.Request.Type.Direction == XFER_WRITE)
852 /* Copy the data into the buffer we created */
853 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
859 memset(buff, 0, iocommand.buf_size);
861 if ((c = cmd_alloc(host , 0)) == NULL)
866 // Fill in the command type
867 c->cmd_type = CMD_IOCTL_PEND;
868 // Fill in Command Header
869 c->Header.ReplyQueue = 0; // unused in simple mode
870 if( iocommand.buf_size > 0) // buffer to fill
872 c->Header.SGList = 1;
873 c->Header.SGTotal= 1;
874 } else // no buffers to fill
876 c->Header.SGList = 0;
877 c->Header.SGTotal= 0;
879 c->Header.LUN = iocommand.LUN_info;
880 c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
882 // Fill in Request block
883 c->Request = iocommand.Request;
885 // Fill in the scatter gather information
886 if (iocommand.buf_size > 0 )
888 temp64.val = pci_map_single( host->pdev, buff,
890 PCI_DMA_BIDIRECTIONAL);
891 c->SG[0].Addr.lower = temp64.val32.lower;
892 c->SG[0].Addr.upper = temp64.val32.upper;
893 c->SG[0].Len = iocommand.buf_size;
894 c->SG[0].Ext = 0; // we are not chaining
898 /* Put the request on the tail of the request queue */
899 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
900 addQ(&host->reqQ, c);
903 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
905 wait_for_completion(&wait);
907 /* unlock the buffers from DMA */
908 temp64.val32.lower = c->SG[0].Addr.lower;
909 temp64.val32.upper = c->SG[0].Addr.upper;
910 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
911 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
913 /* Copy the error information out */
914 iocommand.error_info = *(c->err_info);
915 if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
918 cmd_free(host, c, 0);
922 if (iocommand.Request.Type.Direction == XFER_READ)
924 /* Copy the data out of the buffer we created */
925 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
928 cmd_free(host, c, 0);
933 cmd_free(host, c, 0);
936 case CCISS_BIG_PASSTHRU: {
937 BIG_IOCTL_Command_struct *ioc;
938 CommandList_struct *c;
939 unsigned char **buff = NULL;
940 int *buff_size = NULL;
946 DECLARE_COMPLETION(wait);
949 BYTE __user *data_ptr;
953 if (!capable(CAP_SYS_RAWIO))
955 ioc = (BIG_IOCTL_Command_struct *)
956 kmalloc(sizeof(*ioc), GFP_KERNEL);
961 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
965 if ((ioc->buf_size < 1) &&
966 (ioc->Request.Type.Direction != XFER_NONE)) {
970 /* Check kmalloc limits using all SGs */
971 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
975 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
979 buff = (unsigned char **) kmalloc(MAXSGENTRIES *
980 sizeof(char *), GFP_KERNEL);
985 memset(buff, 0, MAXSGENTRIES);
986 buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
992 left = ioc->buf_size;
995 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
996 buff_size[sg_used] = sz;
997 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
998 if (buff[sg_used] == NULL) {
1002 if (ioc->Request.Type.Direction == XFER_WRITE &&
1003 copy_from_user(buff[sg_used], data_ptr, sz)) {
1007 memset(buff[sg_used], 0, sz);
1013 if ((c = cmd_alloc(host , 0)) == NULL) {
1017 c->cmd_type = CMD_IOCTL_PEND;
1018 c->Header.ReplyQueue = 0;
1020 if( ioc->buf_size > 0) {
1021 c->Header.SGList = sg_used;
1022 c->Header.SGTotal= sg_used;
1024 c->Header.SGList = 0;
1025 c->Header.SGTotal= 0;
1027 c->Header.LUN = ioc->LUN_info;
1028 c->Header.Tag.lower = c->busaddr;
1030 c->Request = ioc->Request;
1031 if (ioc->buf_size > 0 ) {
1033 for(i=0; i<sg_used; i++) {
1034 temp64.val = pci_map_single( host->pdev, buff[i],
1036 PCI_DMA_BIDIRECTIONAL);
1037 c->SG[i].Addr.lower = temp64.val32.lower;
1038 c->SG[i].Addr.upper = temp64.val32.upper;
1039 c->SG[i].Len = buff_size[i];
1040 c->SG[i].Ext = 0; /* we are not chaining */
1044 /* Put the request on the tail of the request queue */
1045 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1046 addQ(&host->reqQ, c);
1049 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1050 wait_for_completion(&wait);
1051 /* unlock the buffers from DMA */
1052 for(i=0; i<sg_used; i++) {
1053 temp64.val32.lower = c->SG[i].Addr.lower;
1054 temp64.val32.upper = c->SG[i].Addr.upper;
1055 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
1056 buff_size[i], PCI_DMA_BIDIRECTIONAL);
1058 /* Copy the error information out */
1059 ioc->error_info = *(c->err_info);
1060 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1061 cmd_free(host, c, 0);
1065 if (ioc->Request.Type.Direction == XFER_READ) {
1066 /* Copy the data out of the buffer we created */
1067 BYTE __user *ptr = ioc->buf;
1068 for(i=0; i< sg_used; i++) {
1069 if (copy_to_user(ptr, buff[i], buff_size[i])) {
1070 cmd_free(host, c, 0);
1074 ptr += buff_size[i];
1077 cmd_free(host, c, 0);
1081 for(i=0; i<sg_used; i++)
1099 * revalidate_allvol is for online array config utilities. After a
1100 * utility reconfigures the drives in the array, it can use this function
1101 * (through an ioctl) to make the driver zap any previous disk structs for
1102 * that controller and get new ones.
1104 * Right now I'm using the getgeometry() function to do this, but this
1105 * function should probably be finer grained and allow you to revalidate one
1106 * particualar logical volume (instead of all of them on a particular
1109 static int revalidate_allvol(ctlr_info_t *host)
1111 int ctlr = host->ctlr, i;
1112 unsigned long flags;
1114 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1115 if (host->usage_count > 1) {
1116 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1117 printk(KERN_WARNING "cciss: Device busy for volume"
1118 " revalidation (usage=%d)\n", host->usage_count);
1121 host->usage_count++;
1122 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1124 for(i=0; i< NWD; i++) {
1125 struct gendisk *disk = host->gendisk[i];
1126 if (disk->flags & GENHD_FL_UP)
1131 * Set the partition and block size structures for all volumes
1132 * on this controller to zero. We will reread all of this data
1134 memset(host->drv, 0, sizeof(drive_info_struct)
1137 * Tell the array controller not to give us any interrupts while
1138 * we check the new geometry. Then turn interrupts back on when
1141 host->access.set_intr_mask(host, CCISS_INTR_OFF);
1142 cciss_getgeometry(ctlr);
1143 host->access.set_intr_mask(host, CCISS_INTR_ON);
1145 /* Loop through each real device */
1146 for (i = 0; i < NWD; i++) {
1147 struct gendisk *disk = host->gendisk[i];
1148 drive_info_struct *drv = &(host->drv[i]);
1149 /* we must register the controller even if no disks exist */
1150 /* this is for the online array utilities */
1151 if (!drv->heads && i)
1153 blk_queue_hardsect_size(drv->queue, drv->block_size);
1154 set_capacity(disk, drv->nr_blocks);
1157 host->usage_count--;
1161 static int deregister_disk(struct gendisk *disk)
1163 unsigned long flags;
1164 ctlr_info_t *h = get_host(disk);
1165 drive_info_struct *drv = get_drv(disk);
1168 if (!capable(CAP_SYS_RAWIO))
1171 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1172 /* make sure logical volume is NOT is use */
1173 if( drv->usage_count > 1) {
1174 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1178 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1180 /* invalidate the devices and deregister the disk */
1181 if (disk->flags & GENHD_FL_UP)
1183 /* check to see if it was the last disk */
1184 if (drv == h->drv + h->highest_lun) {
1185 /* if so, find the new hightest lun */
1186 int i, newhighest =-1;
1187 for(i=0; i<h->highest_lun; i++) {
1188 /* if the disk has size > 0, it is available */
1189 if (h->drv[i].nr_blocks)
1192 h->highest_lun = newhighest;
1196 /* zero out the disk size info */
1198 drv->block_size = 0;
1203 static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
1205 unsigned int use_unit_num, /* 0: address the controller,
1206 1: address logical volume log_unit,
1207 2: periph device address is scsi3addr */
1208 unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
1211 ctlr_info_t *h= hba[ctlr];
1212 u64bit buff_dma_handle;
1215 c->cmd_type = CMD_IOCTL_PEND;
1216 c->Header.ReplyQueue = 0;
1218 c->Header.SGList = 1;
1219 c->Header.SGTotal= 1;
1221 c->Header.SGList = 0;
1222 c->Header.SGTotal= 0;
1224 c->Header.Tag.lower = c->busaddr;
1226 c->Request.Type.Type = cmd_type;
1227 if (cmd_type == TYPE_CMD) {
1230 /* If the logical unit number is 0 then, this is going
1231 to controller so It's a physical command
1232 mode = 0 target = 0. So we have nothing to write.
1233 otherwise, if use_unit_num == 1,
1234 mode = 1(volume set addressing) target = LUNID
1235 otherwise, if use_unit_num == 2,
1236 mode = 0(periph dev addr) target = scsi3addr */
1237 if (use_unit_num == 1) {
1238 c->Header.LUN.LogDev.VolId=
1239 h->drv[log_unit].LunID;
1240 c->Header.LUN.LogDev.Mode = 1;
1241 } else if (use_unit_num == 2) {
1242 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
1243 c->Header.LUN.LogDev.Mode = 0;
1245 /* are we trying to read a vital product page */
1246 if(page_code != 0) {
1247 c->Request.CDB[1] = 0x01;
1248 c->Request.CDB[2] = page_code;
1250 c->Request.CDBLen = 6;
1251 c->Request.Type.Attribute = ATTR_SIMPLE;
1252 c->Request.Type.Direction = XFER_READ;
1253 c->Request.Timeout = 0;
1254 c->Request.CDB[0] = CISS_INQUIRY;
1255 c->Request.CDB[4] = size & 0xFF;
1257 case CISS_REPORT_LOG:
1258 case CISS_REPORT_PHYS:
1259 /* Talking to controller so It's a physical command
1260 mode = 00 target = 0. Nothing to write.
1262 c->Request.CDBLen = 12;
1263 c->Request.Type.Attribute = ATTR_SIMPLE;
1264 c->Request.Type.Direction = XFER_READ;
1265 c->Request.Timeout = 0;
1266 c->Request.CDB[0] = cmd;
1267 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1268 c->Request.CDB[7] = (size >> 16) & 0xFF;
1269 c->Request.CDB[8] = (size >> 8) & 0xFF;
1270 c->Request.CDB[9] = size & 0xFF;
1273 case CCISS_READ_CAPACITY:
1274 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1275 c->Header.LUN.LogDev.Mode = 1;
1276 c->Request.CDBLen = 10;
1277 c->Request.Type.Attribute = ATTR_SIMPLE;
1278 c->Request.Type.Direction = XFER_READ;
1279 c->Request.Timeout = 0;
1280 c->Request.CDB[0] = cmd;
1282 case CCISS_CACHE_FLUSH:
1283 c->Request.CDBLen = 12;
1284 c->Request.Type.Attribute = ATTR_SIMPLE;
1285 c->Request.Type.Direction = XFER_WRITE;
1286 c->Request.Timeout = 0;
1287 c->Request.CDB[0] = BMIC_WRITE;
1288 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1292 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
1295 } else if (cmd_type == TYPE_MSG) {
1297 case 3: /* No-Op message */
1298 c->Request.CDBLen = 1;
1299 c->Request.Type.Attribute = ATTR_SIMPLE;
1300 c->Request.Type.Direction = XFER_WRITE;
1301 c->Request.Timeout = 0;
1302 c->Request.CDB[0] = cmd;
1306 "cciss%d: unknown message type %d\n",
1312 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1315 /* Fill in the scatter gather information */
1317 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1318 buff, size, PCI_DMA_BIDIRECTIONAL);
1319 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1320 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1321 c->SG[0].Len = size;
1322 c->SG[0].Ext = 0; /* we are not chaining */
1326 static int sendcmd_withirq(__u8 cmd,
1330 unsigned int use_unit_num,
1331 unsigned int log_unit,
1335 ctlr_info_t *h = hba[ctlr];
1336 CommandList_struct *c;
1337 u64bit buff_dma_handle;
1338 unsigned long flags;
1340 DECLARE_COMPLETION(wait);
1342 if ((c = cmd_alloc(h , 0)) == NULL)
1344 return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1345 log_unit, page_code, NULL, cmd_type);
1346 if (return_status != IO_OK) {
1348 return return_status;
1353 /* Put the request on the tail of the queue and send it */
1354 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1358 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1360 wait_for_completion(&wait);
1362 if(c->err_info->CommandStatus != 0)
1363 { /* an error has occurred */
1364 switch(c->err_info->CommandStatus)
1366 case CMD_TARGET_STATUS:
1367 printk(KERN_WARNING "cciss: cmd %p has "
1368 " completed with errors\n", c);
1369 if( c->err_info->ScsiStatus)
1371 printk(KERN_WARNING "cciss: cmd %p "
1372 "has SCSI Status = %x\n",
1374 c->err_info->ScsiStatus);
1378 case CMD_DATA_UNDERRUN:
1379 case CMD_DATA_OVERRUN:
1380 /* expected for inquire and report lun commands */
1383 printk(KERN_WARNING "cciss: Cmd %p is "
1384 "reported invalid\n", c);
1385 return_status = IO_ERROR;
1387 case CMD_PROTOCOL_ERR:
1388 printk(KERN_WARNING "cciss: cmd %p has "
1389 "protocol error \n", c);
1390 return_status = IO_ERROR;
1392 case CMD_HARDWARE_ERR:
1393 printk(KERN_WARNING "cciss: cmd %p had "
1394 " hardware error\n", c);
1395 return_status = IO_ERROR;
1397 case CMD_CONNECTION_LOST:
1398 printk(KERN_WARNING "cciss: cmd %p had "
1399 "connection lost\n", c);
1400 return_status = IO_ERROR;
1403 printk(KERN_WARNING "cciss: cmd %p was "
1405 return_status = IO_ERROR;
1407 case CMD_ABORT_FAILED:
1408 printk(KERN_WARNING "cciss: cmd %p reports "
1409 "abort failed\n", c);
1410 return_status = IO_ERROR;
1412 case CMD_UNSOLICITED_ABORT:
1414 "cciss%d: unsolicited abort %p\n",
1416 if (c->retry_count < MAX_CMD_RETRIES) {
1418 "cciss%d: retrying %p\n",
1421 /* erase the old error information */
1422 memset(c->err_info, 0,
1423 sizeof(ErrorInfo_struct));
1424 return_status = IO_OK;
1425 INIT_COMPLETION(wait);
1428 return_status = IO_ERROR;
1431 printk(KERN_WARNING "cciss: cmd %p returned "
1432 "unknown status %x\n", c,
1433 c->err_info->CommandStatus);
1434 return_status = IO_ERROR;
1437 /* unlock the buffers from DMA */
1438 pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1439 size, PCI_DMA_BIDIRECTIONAL);
1441 return(return_status);
1444 static void cciss_geometry_inquiry(int ctlr, int logvol,
1445 int withirq, unsigned int total_size,
1446 unsigned int block_size, InquiryData_struct *inq_buff,
1447 drive_info_struct *drv)
1450 memset(inq_buff, 0, sizeof(InquiryData_struct));
1452 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1453 inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1455 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1456 sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1457 if (return_code == IO_OK) {
1458 if(inq_buff->data_byte[8] == 0xFF) {
1460 "cciss: reading geometry failed, volume "
1461 "does not support reading geometry\n");
1462 drv->block_size = block_size;
1463 drv->nr_blocks = total_size;
1465 drv->sectors = 32; // Sectors per track
1466 drv->cylinders = total_size / 255 / 32;
1470 drv->block_size = block_size;
1471 drv->nr_blocks = total_size;
1472 drv->heads = inq_buff->data_byte[6];
1473 drv->sectors = inq_buff->data_byte[7];
1474 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1475 drv->cylinders += inq_buff->data_byte[5];
1476 drv->raid_level = inq_buff->data_byte[8];
1477 t = drv->heads * drv->sectors;
1479 drv->cylinders = total_size/t;
1482 } else { /* Get geometry failed */
1483 printk(KERN_WARNING "cciss: reading geometry failed\n");
1485 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
1486 drv->heads, drv->sectors, drv->cylinders);
1489 cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1490 int withirq, unsigned int *total_size, unsigned int *block_size)
1493 memset(buf, 0, sizeof(*buf));
1495 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1496 ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1498 return_code = sendcmd(CCISS_READ_CAPACITY,
1499 ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1500 if (return_code == IO_OK) {
1501 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1502 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1503 } else { /* read capacity command failed */
1504 printk(KERN_WARNING "cciss: read capacity failed\n");
1506 *block_size = BLOCK_SIZE;
1508 printk(KERN_INFO " blocks= %u block_size= %d\n",
1509 *total_size, *block_size);
1513 static int register_new_disk(ctlr_info_t *h)
1515 struct gendisk *disk;
1520 int new_lun_found = 0;
1521 int new_lun_index = 0;
1522 int free_index_found = 0;
1524 ReportLunData_struct *ld_buff = NULL;
1525 ReadCapdata_struct *size_buff = NULL;
1526 InquiryData_struct *inq_buff = NULL;
1530 unsigned int block_size;
1531 unsigned int total_size;
1533 if (!capable(CAP_SYS_RAWIO))
1535 /* if we have no space in our disk array left to add anything */
1536 if( h->num_luns >= CISS_MAX_LUN)
1539 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1540 if (ld_buff == NULL)
1542 memset(ld_buff, 0, sizeof(ReportLunData_struct));
1543 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1544 if (size_buff == NULL)
1546 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1547 if (inq_buff == NULL)
1550 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1551 sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);
1553 if( return_code == IO_OK)
1556 // printk("LUN Data\n--------------------------\n");
1558 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
1559 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
1560 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
1561 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1562 } else /* reading number of logical volumes failed */
1564 printk(KERN_WARNING "cciss: report logical volume"
1565 " command failed\n");
1569 num_luns = listlength / 8; // 8 bytes pre entry
1570 if (num_luns > CISS_MAX_LUN)
1572 num_luns = CISS_MAX_LUN;
1575 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
1576 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
1577 ld_buff->LUNListLength[3], num_luns);
1579 for(i=0; i< num_luns; i++)
1582 int lunID_found = 0;
1584 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
1585 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
1586 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
1587 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1589 /* check to see if this is a new lun */
1590 for(j=0; j <= h->highest_lun; j++)
1593 printk("Checking %d %x against %x\n", j,h->drv[j].LunID,
1595 #endif /* CCISS_DEBUG */
1596 if (h->drv[j].LunID == lunid)
1603 if( lunID_found == 1)
1606 { /* It is the new lun we have been looking for */
1608 printk("new lun found at %d\n", i);
1609 #endif /* CCISS_DEBUG */
1617 printk(KERN_WARNING "cciss: New Logical Volume not found\n");
1620 /* Now find the free index */
1621 for(i=0; i <CISS_MAX_LUN; i++)
1624 printk("Checking Index %d\n", i);
1625 #endif /* CCISS_DEBUG */
1626 if(h->drv[i].LunID == 0)
1629 printk("free index found at %d\n", i);
1630 #endif /* CCISS_DEBUG */
1631 free_index_found = 1;
1636 if (!free_index_found)
1638 printk(KERN_WARNING "cciss: unable to find free slot for disk\n");
1642 logvol = free_index;
1643 h->drv[logvol].LunID = lunid;
1644 /* there could be gaps in lun numbers, track hightest */
1645 if(h->highest_lun < lunid)
1646 h->highest_lun = logvol;
1647 cciss_read_capacity(ctlr, logvol, size_buff, 1,
1648 &total_size, &block_size);
1649 cciss_geometry_inquiry(ctlr, logvol, 1, total_size, block_size,
1650 inq_buff, &h->drv[logvol]);
1651 h->drv[logvol].usage_count = 0;
1653 /* setup partitions per disk */
1654 disk = h->gendisk[logvol];
1655 set_capacity(disk, h->drv[logvol].nr_blocks);
1656 /* if it's the controller it's already added */
1665 printk(KERN_ERR "cciss: out of memory\n");
1671 static int cciss_revalidate(struct gendisk *disk)
1673 ctlr_info_t *h = get_host(disk);
1674 drive_info_struct *drv = get_drv(disk);
1677 unsigned int block_size;
1678 unsigned int total_size;
1679 ReadCapdata_struct *size_buff = NULL;
1680 InquiryData_struct *inq_buff = NULL;
1682 for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1684 if(h->drv[logvol].LunID == drv->LunID) {
1690 if (!FOUND) return 1;
1692 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1693 if (size_buff == NULL)
1695 printk(KERN_WARNING "cciss: out of memory\n");
1698 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1699 if (inq_buff == NULL)
1701 printk(KERN_WARNING "cciss: out of memory\n");
1706 cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1707 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1709 blk_queue_hardsect_size(drv->queue, drv->block_size);
1710 set_capacity(disk, drv->nr_blocks);
1718 * Wait polling for a command to complete.
1719 * The memory mapped FIFO is polled for the completion.
1720 * Used only at init time, interrupts from the HBA are disabled.
1722 static unsigned long pollcomplete(int ctlr)
1727 /* Wait (up to 20 seconds) for a command to complete */
1729 for (i = 20 * HZ; i > 0; i--) {
1730 done = hba[ctlr]->access.command_completed(hba[ctlr]);
1731 if (done == FIFO_EMPTY)
1732 schedule_timeout_uninterruptible(1);
1736 /* Invalid address to tell caller we ran out of time */
1740 * Send a command to the controller, and wait for it to complete.
1741 * Only used at init time.
1748 unsigned int use_unit_num, /* 0: address the controller,
1749 1: address logical volume log_unit,
1750 2: periph device address is scsi3addr */
1751 unsigned int log_unit,
1753 unsigned char *scsi3addr,
1756 CommandList_struct *c;
1758 unsigned long complete;
1759 ctlr_info_t *info_p= hba[ctlr];
1760 u64bit buff_dma_handle;
1763 if ((c = cmd_alloc(info_p, 1)) == NULL) {
1764 printk(KERN_WARNING "cciss: unable to get memory");
1767 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1768 log_unit, page_code, scsi3addr, cmd_type);
1769 if (status != IO_OK) {
1770 cmd_free(info_p, c, 1);
1778 printk(KERN_DEBUG "cciss: turning intr off\n");
1779 #endif /* CCISS_DEBUG */
1780 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1782 /* Make sure there is room in the command FIFO */
1783 /* Actually it should be completely empty at this time. */
1784 for (i = 200000; i > 0; i--)
1786 /* if fifo isn't full go */
1787 if (!(info_p->access.fifo_full(info_p)))
1793 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
1794 " waiting!\n", ctlr);
1799 info_p->access.submit_command(info_p, c);
1800 complete = pollcomplete(ctlr);
1803 printk(KERN_DEBUG "cciss: command completed\n");
1804 #endif /* CCISS_DEBUG */
1806 if (complete != 1) {
1807 if ( (complete & CISS_ERROR_BIT)
1808 && (complete & ~CISS_ERROR_BIT) == c->busaddr)
1810 /* if data overrun or underun on Report command
1813 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
1814 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
1815 (c->Request.CDB[0] == CISS_INQUIRY)) &&
1816 ((c->err_info->CommandStatus ==
1817 CMD_DATA_OVERRUN) ||
1818 (c->err_info->CommandStatus ==
1822 complete = c->busaddr;
1824 if (c->err_info->CommandStatus ==
1825 CMD_UNSOLICITED_ABORT) {
1826 printk(KERN_WARNING "cciss%d: "
1827 "unsolicited abort %p\n",
1829 if (c->retry_count < MAX_CMD_RETRIES) {
1831 "cciss%d: retrying %p\n",
1834 /* erase the old error */
1836 memset(c->err_info, 0,
1837 sizeof(ErrorInfo_struct));
1841 "cciss%d: retried %p too "
1842 "many times\n", ctlr, c);
1847 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1848 " Error %x \n", ctlr,
1849 c->err_info->CommandStatus);
1850 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1852 " size %x\n num %x value %x\n", ctlr,
1853 c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
1854 c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
1855 c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
1860 if (complete != c->busaddr) {
1861 printk( KERN_WARNING "cciss cciss%d: SendCmd "
1862 "Invalid command list address returned! (%lx)\n",
1868 printk( KERN_WARNING
1869 "cciss cciss%d: SendCmd Timeout out, "
1870 "No command list address returned!\n",
1876 /* unlock the data buffer from DMA */
1877 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
1878 size, PCI_DMA_BIDIRECTIONAL);
1879 cmd_free(info_p, c, 1);
1883 * Map (physical) PCI mem into (virtual) kernel space
1885 static void __iomem *remap_pci_mem(ulong base, ulong size)
1887 ulong page_base = ((ulong) base) & PAGE_MASK;
1888 ulong page_offs = ((ulong) base) - page_base;
1889 void __iomem *page_remapped = ioremap(page_base, page_offs+size);
1891 return page_remapped ? (page_remapped + page_offs) : NULL;
1895 * Takes jobs of the Q and sends them to the hardware, then puts it on
1896 * the Q to wait for completion.
1898 static void start_io( ctlr_info_t *h)
1900 CommandList_struct *c;
1902 while(( c = h->reqQ) != NULL )
1904 /* can't do anything if fifo is full */
1905 if ((h->access.fifo_full(h))) {
1906 printk(KERN_WARNING "cciss: fifo full\n");
1910 /* Get the frist entry from the Request Q */
1911 removeQ(&(h->reqQ), c);
1914 /* Tell the controller execute command */
1915 h->access.submit_command(h, c);
1917 /* Put job onto the completed Q */
1918 addQ (&(h->cmpQ), c);
1922 static inline void complete_buffers(struct bio *bio, int status)
1925 struct bio *xbh = bio->bi_next;
1926 int nr_sectors = bio_sectors(bio);
1928 bio->bi_next = NULL;
1929 blk_finished_io(len);
1930 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
1935 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
1936 /* Zeros out the error record and then resends the command back */
1937 /* to the controller */
1938 static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
1940 /* erase the old error information */
1941 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
1943 /* add it to software queue and then send it to the controller */
1946 if(h->Qdepth > h->maxQsinceinit)
1947 h->maxQsinceinit = h->Qdepth;
1951 /* checks the status of the job and calls complete buffers to mark all
1952 * buffers for the completed job.
1954 static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
1965 if(cmd->err_info->CommandStatus != 0)
1966 { /* an error has occurred */
1967 switch(cmd->err_info->CommandStatus)
1969 unsigned char sense_key;
1970 case CMD_TARGET_STATUS:
1973 if( cmd->err_info->ScsiStatus == 0x02)
1975 printk(KERN_WARNING "cciss: cmd %p "
1976 "has CHECK CONDITION "
1977 " byte 2 = 0x%x\n", cmd,
1978 cmd->err_info->SenseInfo[2]
1980 /* check the sense key */
1982 cmd->err_info->SenseInfo[2];
1983 /* no status or recovered error */
1984 if((sense_key == 0x0) ||
1991 printk(KERN_WARNING "cciss: cmd %p "
1992 "has SCSI Status 0x%x\n",
1993 cmd, cmd->err_info->ScsiStatus);
1996 case CMD_DATA_UNDERRUN:
1997 printk(KERN_WARNING "cciss: cmd %p has"
1998 " completed with data underrun "
2001 case CMD_DATA_OVERRUN:
2002 printk(KERN_WARNING "cciss: cmd %p has"
2003 " completed with data overrun "
2007 printk(KERN_WARNING "cciss: cmd %p is "
2008 "reported invalid\n", cmd);
2011 case CMD_PROTOCOL_ERR:
2012 printk(KERN_WARNING "cciss: cmd %p has "
2013 "protocol error \n", cmd);
2016 case CMD_HARDWARE_ERR:
2017 printk(KERN_WARNING "cciss: cmd %p had "
2018 " hardware error\n", cmd);
2021 case CMD_CONNECTION_LOST:
2022 printk(KERN_WARNING "cciss: cmd %p had "
2023 "connection lost\n", cmd);
2027 printk(KERN_WARNING "cciss: cmd %p was "
2031 case CMD_ABORT_FAILED:
2032 printk(KERN_WARNING "cciss: cmd %p reports "
2033 "abort failed\n", cmd);
2036 case CMD_UNSOLICITED_ABORT:
2037 printk(KERN_WARNING "cciss%d: unsolicited "
2038 "abort %p\n", h->ctlr, cmd);
2039 if (cmd->retry_count < MAX_CMD_RETRIES) {
2042 "cciss%d: retrying %p\n",
2047 "cciss%d: %p retried too "
2048 "many times\n", h->ctlr, cmd);
2052 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2057 printk(KERN_WARNING "cciss: cmd %p returned "
2058 "unknown status %x\n", cmd,
2059 cmd->err_info->CommandStatus);
2063 /* We need to return this command */
2065 resend_cciss_cmd(h,cmd);
2068 /* command did not need to be retried */
2069 /* unmap the DMA mapping for all the scatter gather elements */
2070 for(i=0; i<cmd->Header.SGList; i++) {
2071 temp64.val32.lower = cmd->SG[i].Addr.lower;
2072 temp64.val32.upper = cmd->SG[i].Addr.upper;
2073 pci_unmap_page(hba[cmd->ctlr]->pdev,
2074 temp64.val, cmd->SG[i].Len,
2075 (cmd->Request.Type.Direction == XFER_READ) ?
2076 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2078 complete_buffers(cmd->rq->bio, status);
2081 printk("Done with %p\n", cmd->rq);
2082 #endif /* CCISS_DEBUG */
2084 end_that_request_last(cmd->rq);
2089 * Get a request and submit it to the controller.
2091 static void do_cciss_request(request_queue_t *q)
2093 ctlr_info_t *h= q->queuedata;
2094 CommandList_struct *c;
2096 struct request *creq;
2098 struct scatterlist tmp_sg[MAXSGENTRIES];
2099 drive_info_struct *drv;
2102 /* We call start_io here in case there is a command waiting on the
2103 * queue that has not been sent.
2105 if (blk_queue_plugged(q))
2109 creq = elv_next_request(q);
2113 if (creq->nr_phys_segments > MAXSGENTRIES)
2116 if (( c = cmd_alloc(h, 1)) == NULL)
2119 blkdev_dequeue_request(creq);
2121 spin_unlock_irq(q->queue_lock);
2123 c->cmd_type = CMD_RWREQ;
2126 /* fill in the request */
2127 drv = creq->rq_disk->private_data;
2128 c->Header.ReplyQueue = 0; // unused in simple mode
2129 c->Header.Tag.lower = c->busaddr; // use the physical address the cmd block for tag
2130 c->Header.LUN.LogDev.VolId= drv->LunID;
2131 c->Header.LUN.LogDev.Mode = 1;
2132 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2133 c->Request.Type.Type = TYPE_CMD; // It is a command.
2134 c->Request.Type.Attribute = ATTR_SIMPLE;
2135 c->Request.Type.Direction =
2136 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
2137 c->Request.Timeout = 0; // Don't time out
2138 c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2139 start_blk = creq->sector;
2141 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2142 (int) creq->nr_sectors);
2143 #endif /* CCISS_DEBUG */
2145 seg = blk_rq_map_sg(q, creq, tmp_sg);
2147 /* get the DMA records for the setup */
2148 if (c->Request.Type.Direction == XFER_READ)
2149 dir = PCI_DMA_FROMDEVICE;
2151 dir = PCI_DMA_TODEVICE;
2153 for (i=0; i<seg; i++)
2155 c->SG[i].Len = tmp_sg[i].length;
2156 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2157 tmp_sg[i].offset, tmp_sg[i].length,
2159 c->SG[i].Addr.lower = temp64.val32.lower;
2160 c->SG[i].Addr.upper = temp64.val32.upper;
2161 c->SG[i].Ext = 0; // we are not chaining
2163 /* track how many SG entries we are using */
2168 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2169 #endif /* CCISS_DEBUG */
2171 c->Header.SGList = c->Header.SGTotal = seg;
2172 c->Request.CDB[1]= 0;
2173 c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB
2174 c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2175 c->Request.CDB[4]= (start_blk >> 8) & 0xff;
2176 c->Request.CDB[5]= start_blk & 0xff;
2177 c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2178 c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff;
2179 c->Request.CDB[8]= creq->nr_sectors & 0xff;
2180 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2182 spin_lock_irq(q->queue_lock);
2186 if(h->Qdepth > h->maxQsinceinit)
2187 h->maxQsinceinit = h->Qdepth;
2193 /* We will already have the driver lock here so not need
2199 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2201 ctlr_info_t *h = dev_id;
2202 CommandList_struct *c;
2203 unsigned long flags;
2206 int start_queue = h->next_to_run;
2208 /* Is this interrupt for us? */
2209 if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2213 * If there are completed commands in the completion queue,
2214 * we had better do something about it.
2216 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2217 while( h->access.intr_pending(h))
2219 while((a = h->access.command_completed(h)) != FIFO_EMPTY)
2223 if ((c = h->cmpQ) == NULL)
2225 printk(KERN_WARNING "cciss: Completion of %08lx ignored\n", (unsigned long)a1);
2228 while(c->busaddr != a) {
2234 * If we've found the command, take it off the
2235 * completion Q and free it
2237 if (c->busaddr == a) {
2238 removeQ(&h->cmpQ, c);
2239 if (c->cmd_type == CMD_RWREQ) {
2240 complete_command(h, c, 0);
2241 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2242 complete(c->waiting);
2244 # ifdef CONFIG_CISS_SCSI_TAPE
2245 else if (c->cmd_type == CMD_SCSI)
2246 complete_scsi_command(c, 0, a1);
2253 /* check to see if we have maxed out the number of commands that can
2254 * be placed on the queue. If so then exit. We do this check here
2255 * in case the interrupt we serviced was from an ioctl and did not
2256 * free any new commands.
2258 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2261 /* We have room on the queue for more commands. Now we need to queue
2262 * them up. We will also keep track of the next queue to run so
2263 * that every queue gets a chance to be started first.
2265 for (j=0; j < h->highest_lun + 1; j++){
2266 int curr_queue = (start_queue + j) % (h->highest_lun + 1);
2267 /* make sure the disk has been added and the drive is real
2268 * because this can be called from the middle of init_one.
2270 if(!(h->drv[curr_queue].queue) ||
2271 !(h->drv[curr_queue].heads))
2273 blk_start_queue(h->gendisk[curr_queue]->queue);
2275 /* check to see if we have maxed out the number of commands
2276 * that can be placed on the queue.
2278 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2280 if (curr_queue == start_queue){
2281 h->next_to_run = (start_queue + 1) % (h->highest_lun + 1);
2284 h->next_to_run = curr_queue;
2288 curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
2293 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2297 * We cannot read the structure directly, for portablity we must use
2299 * This is for debug only.
2302 static void print_cfg_table( CfgTable_struct *tb)
2307 printk("Controller Configuration information\n");
2308 printk("------------------------------------\n");
2310 temp_name[i] = readb(&(tb->Signature[i]));
2312 printk(" Signature = %s\n", temp_name);
2313 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2314 printk(" Transport methods supported = 0x%x\n",
2315 readl(&(tb-> TransportSupport)));
2316 printk(" Transport methods active = 0x%x\n",
2317 readl(&(tb->TransportActive)));
2318 printk(" Requested transport Method = 0x%x\n",
2319 readl(&(tb->HostWrite.TransportRequest)));
2320 printk(" Coalese Interrupt Delay = 0x%x\n",
2321 readl(&(tb->HostWrite.CoalIntDelay)));
2322 printk(" Coalese Interrupt Count = 0x%x\n",
2323 readl(&(tb->HostWrite.CoalIntCount)));
2324 printk(" Max outstanding commands = 0x%d\n",
2325 readl(&(tb->CmdsOutMax)));
2326 printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2328 temp_name[i] = readb(&(tb->ServerName[i]));
2329 temp_name[16] = '\0';
2330 printk(" Server Name = %s\n", temp_name);
2331 printk(" Heartbeat Counter = 0x%x\n\n\n",
2332 readl(&(tb->HeartBeat)));
2334 #endif /* CCISS_DEBUG */
2336 static void release_io_mem(ctlr_info_t *c)
2338 /* if IO mem was not protected do nothing */
2339 if( c->io_mem_addr == 0)
2341 release_region(c->io_mem_addr, c->io_mem_length);
2343 c->io_mem_length = 0;
2346 static int find_PCI_BAR_index(struct pci_dev *pdev,
2347 unsigned long pci_bar_addr)
2349 int i, offset, mem_type, bar_type;
2350 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2353 for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2354 bar_type = pci_resource_flags(pdev, i) &
2355 PCI_BASE_ADDRESS_SPACE;
2356 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2359 mem_type = pci_resource_flags(pdev, i) &
2360 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2362 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2363 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2364 offset += 4; /* 32 bit */
2366 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2369 default: /* reserved in PCI 2.2 */
2370 printk(KERN_WARNING "Base address is invalid\n");
2375 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2381 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2383 ushort subsystem_vendor_id, subsystem_device_id, command;
2384 __u32 board_id, scratchpad = 0;
2386 __u32 cfg_base_addr;
2387 __u64 cfg_base_addr_index;
2390 /* check to see if controller has been disabled */
2391 /* BEFORE trying to enable it */
2392 (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2393 if(!(command & 0x02))
2395 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2399 if (pci_enable_device(pdev))
2401 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2405 subsystem_vendor_id = pdev->subsystem_vendor;
2406 subsystem_device_id = pdev->subsystem_device;
2407 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2408 subsystem_vendor_id);
2410 /* search for our IO range so we can protect it */
2411 for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2413 /* is this an IO range */
2414 if( pci_resource_flags(pdev, i) & 0x01 ) {
2415 c->io_mem_addr = pci_resource_start(pdev, i);
2416 c->io_mem_length = pci_resource_end(pdev, i) -
2417 pci_resource_start(pdev, i) +1;
2419 printk("IO value found base_addr[%d] %lx %lx\n", i,
2420 c->io_mem_addr, c->io_mem_length);
2421 #endif /* CCISS_DEBUG */
2422 /* register the IO range */
2423 if(!request_region( c->io_mem_addr,
2424 c->io_mem_length, "cciss"))
2426 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2427 c->io_mem_addr, c->io_mem_length);
2429 c->io_mem_length = 0;
2436 printk("command = %x\n", command);
2437 printk("irq = %x\n", pdev->irq);
2438 printk("board_id = %x\n", board_id);
2439 #endif /* CCISS_DEBUG */
2441 c->intr = pdev->irq;
2444 * Memory base addr is first addr , the second points to the config
2448 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2450 printk("address 0 = %x\n", c->paddr);
2451 #endif /* CCISS_DEBUG */
2452 c->vaddr = remap_pci_mem(c->paddr, 200);
2454 /* Wait for the board to become ready. (PCI hotplug needs this.)
2455 * We poll for up to 120 secs, once per 100ms. */
2456 for (i=0; i < 1200; i++) {
2457 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2458 if (scratchpad == CCISS_FIRMWARE_READY)
2460 set_current_state(TASK_INTERRUPTIBLE);
2461 schedule_timeout(HZ / 10); /* wait 100ms */
2463 if (scratchpad != CCISS_FIRMWARE_READY) {
2464 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2468 /* get the address index number */
2469 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2470 cfg_base_addr &= (__u32) 0x0000ffff;
2472 printk("cfg base address = %x\n", cfg_base_addr);
2473 #endif /* CCISS_DEBUG */
2474 cfg_base_addr_index =
2475 find_PCI_BAR_index(pdev, cfg_base_addr);
2477 printk("cfg base address index = %x\n", cfg_base_addr_index);
2478 #endif /* CCISS_DEBUG */
2479 if (cfg_base_addr_index == -1) {
2480 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2485 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2487 printk("cfg offset = %x\n", cfg_offset);
2488 #endif /* CCISS_DEBUG */
2489 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
2490 cfg_base_addr_index) + cfg_offset,
2491 sizeof(CfgTable_struct));
2492 c->board_id = board_id;
2495 print_cfg_table(c->cfgtable);
2496 #endif /* CCISS_DEBUG */
2498 for(i=0; i<NR_PRODUCTS; i++) {
2499 if (board_id == products[i].board_id) {
2500 c->product_name = products[i].product_name;
2501 c->access = *(products[i].access);
2505 if (i == NR_PRODUCTS) {
2506 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2507 " to access the Smart Array controller %08lx\n",
2508 (unsigned long)board_id);
2511 if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
2512 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2513 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2514 (readb(&c->cfgtable->Signature[3]) != 'S') )
2516 printk("Does not appear to be a valid CISS config table\n");
2522 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2524 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2526 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2531 printk("Trying to put board into Simple mode\n");
2532 #endif /* CCISS_DEBUG */
2533 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2534 /* Update the field, and then ring the doorbell */
2535 writel( CFGTBL_Trans_Simple,
2536 &(c->cfgtable->HostWrite.TransportRequest));
2537 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2539 /* under certain very rare conditions, this can take awhile.
2540 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2541 * as we enter this code.) */
2542 for(i=0;i<MAX_CONFIG_WAIT;i++) {
2543 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2545 /* delay and try again */
2546 set_current_state(TASK_INTERRUPTIBLE);
2547 schedule_timeout(10);
2551 printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2552 #endif /* CCISS_DEBUG */
2554 print_cfg_table(c->cfgtable);
2555 #endif /* CCISS_DEBUG */
2557 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2559 printk(KERN_WARNING "cciss: unable to get board into"
2568 * Gets information about the local volumes attached to the controller.
2570 static void cciss_getgeometry(int cntl_num)
2572 ReportLunData_struct *ld_buff;
2573 ReadCapdata_struct *size_buff;
2574 InquiryData_struct *inq_buff;
2582 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2583 if (ld_buff == NULL)
2585 printk(KERN_ERR "cciss: out of memory\n");
2588 memset(ld_buff, 0, sizeof(ReportLunData_struct));
2589 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2590 if (size_buff == NULL)
2592 printk(KERN_ERR "cciss: out of memory\n");
2596 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2597 if (inq_buff == NULL)
2599 printk(KERN_ERR "cciss: out of memory\n");
2604 /* Get the firmware version */
2605 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2606 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2607 if (return_code == IO_OK)
2609 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2610 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2611 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2612 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2613 } else /* send command failed */
2615 printk(KERN_WARNING "cciss: unable to determine firmware"
2616 " version of controller\n");
2618 /* Get the number of logical volumes */
2619 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2620 sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2622 if( return_code == IO_OK)
2625 printk("LUN Data\n--------------------------\n");
2626 #endif /* CCISS_DEBUG */
2628 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2629 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2630 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
2631 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2632 } else /* reading number of logical volumes failed */
2634 printk(KERN_WARNING "cciss: report logical volume"
2635 " command failed\n");
2638 hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2639 if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2641 printk(KERN_ERR "ciss: only %d number of logical volumes supported\n",
2643 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2646 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2647 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2648 ld_buff->LUNListLength[3], hba[cntl_num]->num_luns);
2649 #endif /* CCISS_DEBUG */
2651 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
2652 for(i=0; i< hba[cntl_num]->num_luns; i++)
2655 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
2656 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
2657 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
2658 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2660 hba[cntl_num]->drv[i].LunID = lunid;
2664 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
2665 ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2],
2666 ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID);
2667 #endif /* CCISS_DEBUG */
2668 cciss_read_capacity(cntl_num, i, size_buff, 0,
2669 &total_size, &block_size);
2670 cciss_geometry_inquiry(cntl_num, i, 0, total_size, block_size,
2671 inq_buff, &hba[cntl_num]->drv[i]);
2678 /* Function to find the first free pointer into our hba[] array */
2679 /* Returns -1 if no free entries are left. */
2680 static int alloc_cciss_hba(void)
2682 struct gendisk *disk[NWD];
2684 for (n = 0; n < NWD; n++) {
2685 disk[n] = alloc_disk(1 << NWD_SHIFT);
2690 for(i=0; i< MAX_CTLR; i++) {
2693 p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
2696 memset(p, 0, sizeof(ctlr_info_t));
2697 for (n = 0; n < NWD; n++)
2698 p->gendisk[n] = disk[n];
2703 printk(KERN_WARNING "cciss: This driver supports a maximum"
2704 " of %d controllers.\n", MAX_CTLR);
2707 printk(KERN_ERR "cciss: out of memory.\n");
2714 static void free_hba(int i)
2716 ctlr_info_t *p = hba[i];
2720 for (n = 0; n < NWD; n++)
2721 put_disk(p->gendisk[n]);
2726 * This is it. Find all the controllers and register them. I really hate
2727 * stealing all these major device numbers.
2728 * returns the number of block devices registered.
2730 static int __devinit cciss_init_one(struct pci_dev *pdev,
2731 const struct pci_device_id *ent)
2738 printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
2739 " bus %d dev %d func %d\n",
2740 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
2741 PCI_FUNC(pdev->devfn));
2742 i = alloc_cciss_hba();
2745 if (cciss_pci_init(hba[i], pdev) != 0)
2748 sprintf(hba[i]->devname, "cciss%d", i);
2750 hba[i]->pdev = pdev;
2752 /* configure PCI DMA stuff */
2753 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
2754 printk("cciss: using DAC cycles\n");
2755 else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2756 printk("cciss: not using DAC cycles\n");
2758 printk("cciss: no suitable DMA available\n");
2763 * register with the major number, or get a dynamic major number
2764 * by passing 0 as argument. This is done for greater than
2765 * 8 controller support.
2767 if (i < MAX_CTLR_ORIG)
2768 hba[i]->major = MAJOR_NR + i;
2769 rc = register_blkdev(hba[i]->major, hba[i]->devname);
2770 if(rc == -EBUSY || rc == -EINVAL) {
2772 "cciss: Unable to get major number %d for %s "
2773 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
2777 if (i >= MAX_CTLR_ORIG)
2781 /* make sure the board interrupts are off */
2782 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
2783 if( request_irq(hba[i]->intr, do_cciss_intr,
2784 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
2785 hba[i]->devname, hba[i])) {
2786 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
2787 hba[i]->intr, hba[i]->devname);
2790 hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
2791 hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
2792 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2793 &(hba[i]->cmd_pool_dhandle));
2794 hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
2795 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2796 &(hba[i]->errinfo_pool_dhandle));
2797 if((hba[i]->cmd_pool_bits == NULL)
2798 || (hba[i]->cmd_pool == NULL)
2799 || (hba[i]->errinfo_pool == NULL)) {
2800 printk( KERN_ERR "cciss: out of memory");
2804 spin_lock_init(&hba[i]->lock);
2806 /* Initialize the pdev driver private data.
2807 have it point to hba[i]. */
2808 pci_set_drvdata(pdev, hba[i]);
2809 /* command and error info recs zeroed out before
2811 memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
2814 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
2815 #endif /* CCISS_DEBUG */
2817 cciss_getgeometry(i);
2819 cciss_scsi_setup(i);
2821 /* Turn the interrupts on so we can service requests */
2822 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
2826 for(j=0; j < NWD; j++) { /* mfm */
2827 drive_info_struct *drv = &(hba[i]->drv[j]);
2828 struct gendisk *disk = hba[i]->gendisk[j];
2830 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
2833 "cciss: unable to allocate queue for disk %d\n",
2839 q->backing_dev_info.ra_pages = READ_AHEAD;
2840 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
2842 /* This is a hardware imposed limit. */
2843 blk_queue_max_hw_segments(q, MAXSGENTRIES);
2845 /* This is a limit in the driver and could be eliminated. */
2846 blk_queue_max_phys_segments(q, MAXSGENTRIES);
2848 blk_queue_max_sectors(q, 512);
2850 q->queuedata = hba[i];
2851 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
2852 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
2853 disk->major = hba[i]->major;
2854 disk->first_minor = j << NWD_SHIFT;
2855 disk->fops = &cciss_fops;
2857 disk->private_data = drv;
2858 /* we must register the controller even if no disks exist */
2859 /* this is for the online array utilities */
2860 if(!drv->heads && j)
2862 blk_queue_hardsect_size(q, drv->block_size);
2863 set_capacity(disk, drv->nr_blocks);
2870 if(hba[i]->cmd_pool_bits)
2871 kfree(hba[i]->cmd_pool_bits);
2872 if(hba[i]->cmd_pool)
2873 pci_free_consistent(hba[i]->pdev,
2874 NR_CMDS * sizeof(CommandList_struct),
2875 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2876 if(hba[i]->errinfo_pool)
2877 pci_free_consistent(hba[i]->pdev,
2878 NR_CMDS * sizeof( ErrorInfo_struct),
2879 hba[i]->errinfo_pool,
2880 hba[i]->errinfo_pool_dhandle);
2881 free_irq(hba[i]->intr, hba[i]);
2883 unregister_blkdev(hba[i]->major, hba[i]->devname);
2885 release_io_mem(hba[i]);
2890 static void __devexit cciss_remove_one (struct pci_dev *pdev)
2892 ctlr_info_t *tmp_ptr;
2897 if (pci_get_drvdata(pdev) == NULL)
2899 printk( KERN_ERR "cciss: Unable to remove device \n");
2902 tmp_ptr = pci_get_drvdata(pdev);
2906 printk(KERN_ERR "cciss: device appears to "
2907 "already be removed \n");
2910 /* Turn board interrupts off and send the flush cache command */
2911 /* sendcmd will turn off interrupt, and send the flush...
2912 * To write all data in the battery backed cache to disks */
2913 memset(flush_buf, 0, 4);
2914 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
2916 if(return_code != IO_OK)
2918 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
2921 free_irq(hba[i]->intr, hba[i]);
2922 pci_set_drvdata(pdev, NULL);
2923 iounmap(hba[i]->vaddr);
2924 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
2925 unregister_blkdev(hba[i]->major, hba[i]->devname);
2926 remove_proc_entry(hba[i]->devname, proc_cciss);
2928 /* remove it from the disk list */
2929 for (j = 0; j < NWD; j++) {
2930 struct gendisk *disk = hba[i]->gendisk[j];
2931 if (disk->flags & GENHD_FL_UP)
2932 blk_cleanup_queue(disk->queue);
2936 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2937 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2938 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2939 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
2940 kfree(hba[i]->cmd_pool_bits);
2941 release_io_mem(hba[i]);
2945 static struct pci_driver cciss_pci_driver = {
2947 .probe = cciss_init_one,
2948 .remove = __devexit_p(cciss_remove_one),
2949 .id_table = cciss_pci_device_id, /* id_table */
2953 * This is it. Register the PCI driver information for the cards we control
2954 * the OS will call our registered routines when it finds one of our cards.
2956 static int __init cciss_init(void)
2958 printk(KERN_INFO DRIVER_NAME "\n");
2960 /* Register for our PCI devices */
2961 return pci_module_init(&cciss_pci_driver);
2964 static void __exit cciss_cleanup(void)
2968 pci_unregister_driver(&cciss_pci_driver);
2969 /* double check that all controller entrys have been removed */
2970 for (i=0; i< MAX_CTLR; i++)
2974 printk(KERN_WARNING "cciss: had to remove"
2975 " controller %d\n", i);
2976 cciss_remove_one(hba[i]->pdev);
2979 remove_proc_entry("cciss", proc_root_driver);
2982 module_init(cciss_init);
2983 module_exit(cciss_cleanup);