2 * Disk Array driver for HP SA 5xxx and 6xxx Controllers
3 * Copyright 2000, 2006 Hewlett-Packard Development Company, L.P.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
23 #include <linux/config.h> /* CONFIG_PROC_FS */
24 #include <linux/module.h>
25 #include <linux/interrupt.h>
26 #include <linux/types.h>
27 #include <linux/pci.h>
28 #include <linux/kernel.h>
29 #include <linux/slab.h>
30 #include <linux/delay.h>
31 #include <linux/major.h>
33 #include <linux/bio.h>
34 #include <linux/blkpg.h>
35 #include <linux/timer.h>
36 #include <linux/proc_fs.h>
37 #include <linux/init.h>
38 #include <linux/hdreg.h>
39 #include <linux/spinlock.h>
40 #include <linux/compat.h>
41 #include <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 2.6.10)"
51 #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,10)
53 /* Embedded module documentation macros - see modules.h */
54 MODULE_AUTHOR("Hewlett-Packard Company");
55 MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.10");
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 irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs);
152 static int cciss_open(struct inode *inode, struct file *filep);
153 static int cciss_release(struct inode *inode, struct file *filep);
154 static int cciss_ioctl(struct inode *inode, struct file *filep,
155 unsigned int cmd, unsigned long arg);
156 static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo);
158 static int revalidate_allvol(ctlr_info_t *host);
159 static int cciss_revalidate(struct gendisk *disk);
160 static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk);
161 static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, int clear_all);
163 static void cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
164 int withirq, unsigned int *total_size, unsigned int *block_size);
165 static void cciss_geometry_inquiry(int ctlr, int logvol,
166 int withirq, unsigned int total_size,
167 unsigned int block_size, InquiryData_struct *inq_buff,
168 drive_info_struct *drv);
169 static void cciss_getgeometry(int cntl_num);
170 static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, __u32);
171 static void start_io( ctlr_info_t *h);
172 static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
173 unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
174 unsigned char *scsi3addr, int cmd_type);
175 static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
176 unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
179 static void fail_all_cmds(unsigned long ctlr);
181 #ifdef CONFIG_PROC_FS
182 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
183 int length, int *eof, void *data);
184 static void cciss_procinit(int i);
186 static void cciss_procinit(int i) {}
187 #endif /* CONFIG_PROC_FS */
190 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
193 static struct block_device_operations cciss_fops = {
194 .owner = THIS_MODULE,
196 .release = cciss_release,
197 .ioctl = cciss_ioctl,
198 .getgeo = cciss_getgeo,
200 .compat_ioctl = cciss_compat_ioctl,
202 .revalidate_disk= cciss_revalidate,
206 * Enqueuing and dequeuing functions for cmdlists.
208 static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
212 c->next = c->prev = c;
214 c->prev = (*Qptr)->prev;
216 (*Qptr)->prev->next = c;
221 static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
222 CommandList_struct *c)
224 if (c && c->next != c) {
225 if (*Qptr == c) *Qptr = c->next;
226 c->prev->next = c->next;
227 c->next->prev = c->prev;
234 #include "cciss_scsi.c" /* For SCSI tape support */
236 #ifdef CONFIG_PROC_FS
239 * Report information about this controller.
241 #define ENG_GIG 1000000000
242 #define ENG_GIG_FACTOR (ENG_GIG/512)
243 #define RAID_UNKNOWN 6
244 static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
247 static struct proc_dir_entry *proc_cciss;
249 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
250 int length, int *eof, void *data)
255 ctlr_info_t *h = (ctlr_info_t*)data;
256 drive_info_struct *drv;
258 sector_t vol_sz, vol_sz_frac;
262 /* prevent displaying bogus info during configuration
263 * or deconfiguration of a logical volume
265 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
266 if (h->busy_configuring) {
267 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
270 h->busy_configuring = 1;
271 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
273 size = sprintf(buffer, "%s: HP %s Controller\n"
274 "Board ID: 0x%08lx\n"
275 "Firmware Version: %c%c%c%c\n"
277 "Logical drives: %d\n"
278 "Current Q depth: %d\n"
279 "Current # commands on controller: %d\n"
280 "Max Q depth since init: %d\n"
281 "Max # commands on controller since init: %d\n"
282 "Max SG entries since init: %d\n\n",
285 (unsigned long)h->board_id,
286 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
287 (unsigned int)h->intr[SIMPLE_MODE_INT],
289 h->Qdepth, h->commands_outstanding,
290 h->maxQsinceinit, h->max_outstanding, h->maxSG);
292 pos += size; len += size;
293 cciss_proc_tape_report(ctlr, buffer, &pos, &len);
294 for(i=0; i<=h->highest_lun; i++) {
300 vol_sz = drv->nr_blocks;
301 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
303 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
305 if (drv->raid_level > 5)
306 drv->raid_level = RAID_UNKNOWN;
307 size = sprintf(buffer+len, "cciss/c%dd%d:"
308 "\t%4u.%02uGB\tRAID %s\n",
309 ctlr, i, (int)vol_sz, (int)vol_sz_frac,
310 raid_label[drv->raid_level]);
311 pos += size; len += size;
315 *start = buffer+offset;
319 h->busy_configuring = 0;
324 cciss_proc_write(struct file *file, const char __user *buffer,
325 unsigned long count, void *data)
327 unsigned char cmd[80];
329 #ifdef CONFIG_CISS_SCSI_TAPE
330 ctlr_info_t *h = (ctlr_info_t *) data;
334 if (count > sizeof(cmd)-1) return -EINVAL;
335 if (copy_from_user(cmd, buffer, count)) return -EFAULT;
337 len = strlen(cmd); // above 3 lines ensure safety
338 if (len && cmd[len-1] == '\n')
340 # ifdef CONFIG_CISS_SCSI_TAPE
341 if (strcmp("engage scsi", cmd)==0) {
342 rc = cciss_engage_scsi(h->ctlr);
343 if (rc != 0) return -rc;
346 /* might be nice to have "disengage" too, but it's not
347 safely possible. (only 1 module use count, lock issues.) */
353 * Get us a file in /proc/cciss that says something about each controller.
354 * Create /proc/cciss if it doesn't exist yet.
356 static void __devinit cciss_procinit(int i)
358 struct proc_dir_entry *pde;
360 if (proc_cciss == NULL) {
361 proc_cciss = proc_mkdir("cciss", proc_root_driver);
366 pde = create_proc_read_entry(hba[i]->devname,
367 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
368 proc_cciss, cciss_proc_get_info, hba[i]);
369 pde->write_proc = cciss_proc_write;
371 #endif /* CONFIG_PROC_FS */
374 * For operations that cannot sleep, a command block is allocated at init,
375 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
376 * which ones are free or in use. For operations that can wait for kmalloc
377 * to possible sleep, this routine can be called with get_from_pool set to 0.
378 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
380 static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
382 CommandList_struct *c;
385 dma_addr_t cmd_dma_handle, err_dma_handle;
389 c = (CommandList_struct *) pci_alloc_consistent(
390 h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
393 memset(c, 0, sizeof(CommandList_struct));
397 c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
398 h->pdev, sizeof(ErrorInfo_struct),
401 if (c->err_info == NULL)
403 pci_free_consistent(h->pdev,
404 sizeof(CommandList_struct), c, cmd_dma_handle);
407 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
408 } else /* get it out of the controllers pool */
411 i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
414 } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
416 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
419 memset(c, 0, sizeof(CommandList_struct));
420 cmd_dma_handle = h->cmd_pool_dhandle
421 + i*sizeof(CommandList_struct);
422 c->err_info = h->errinfo_pool + i;
423 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
424 err_dma_handle = h->errinfo_pool_dhandle
425 + i*sizeof(ErrorInfo_struct);
431 c->busaddr = (__u32) cmd_dma_handle;
432 temp64.val = (__u64) err_dma_handle;
433 c->ErrDesc.Addr.lower = temp64.val32.lower;
434 c->ErrDesc.Addr.upper = temp64.val32.upper;
435 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
444 * Frees a command block that was previously allocated with cmd_alloc().
446 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
453 temp64.val32.lower = c->ErrDesc.Addr.lower;
454 temp64.val32.upper = c->ErrDesc.Addr.upper;
455 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
456 c->err_info, (dma_addr_t) temp64.val);
457 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
458 c, (dma_addr_t) c->busaddr);
462 clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
467 static inline ctlr_info_t *get_host(struct gendisk *disk)
469 return disk->queue->queuedata;
472 static inline drive_info_struct *get_drv(struct gendisk *disk)
474 return disk->private_data;
478 * Open. Make sure the device is really there.
480 static int cciss_open(struct inode *inode, struct file *filep)
482 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
483 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
486 printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
487 #endif /* CCISS_DEBUG */
489 if (host->busy_initializing || drv->busy_configuring)
492 * Root is allowed to open raw volume zero even if it's not configured
493 * so array config can still work. Root is also allowed to open any
494 * volume that has a LUN ID, so it can issue IOCTL to reread the
495 * disk information. I don't think I really like this
496 * but I'm already using way to many device nodes to claim another one
497 * for "raw controller".
499 if (drv->nr_blocks == 0) {
500 if (iminor(inode) != 0) { /* not node 0? */
501 /* if not node 0 make sure it is a partition = 0 */
502 if (iminor(inode) & 0x0f) {
504 /* if it is, make sure we have a LUN ID */
505 } else if (drv->LunID == 0) {
509 if (!capable(CAP_SYS_ADMIN))
519 static int cciss_release(struct inode *inode, struct file *filep)
521 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
522 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
525 printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
526 #endif /* CCISS_DEBUG */
535 static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
539 ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
544 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
545 static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
547 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
550 case CCISS_GETPCIINFO:
551 case CCISS_GETINTINFO:
552 case CCISS_SETINTINFO:
553 case CCISS_GETNODENAME:
554 case CCISS_SETNODENAME:
555 case CCISS_GETHEARTBEAT:
556 case CCISS_GETBUSTYPES:
557 case CCISS_GETFIRMVER:
558 case CCISS_GETDRIVVER:
559 case CCISS_REVALIDVOLS:
560 case CCISS_DEREGDISK:
561 case CCISS_REGNEWDISK:
563 case CCISS_RESCANDISK:
564 case CCISS_GETLUNINFO:
565 return do_ioctl(f, cmd, arg);
567 case CCISS_PASSTHRU32:
568 return cciss_ioctl32_passthru(f, cmd, arg);
569 case CCISS_BIG_PASSTHRU32:
570 return cciss_ioctl32_big_passthru(f, cmd, arg);
577 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
579 IOCTL32_Command_struct __user *arg32 =
580 (IOCTL32_Command_struct __user *) arg;
581 IOCTL_Command_struct arg64;
582 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
587 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
588 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
589 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
590 err |= get_user(arg64.buf_size, &arg32->buf_size);
591 err |= get_user(cp, &arg32->buf);
592 arg64.buf = compat_ptr(cp);
593 err |= copy_to_user(p, &arg64, sizeof(arg64));
598 err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
601 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
607 static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
609 BIG_IOCTL32_Command_struct __user *arg32 =
610 (BIG_IOCTL32_Command_struct __user *) arg;
611 BIG_IOCTL_Command_struct arg64;
612 BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
617 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
618 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
619 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
620 err |= get_user(arg64.buf_size, &arg32->buf_size);
621 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
622 err |= get_user(cp, &arg32->buf);
623 arg64.buf = compat_ptr(cp);
624 err |= copy_to_user(p, &arg64, sizeof(arg64));
629 err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
632 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
639 static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo)
641 drive_info_struct *drv = get_drv(bdev->bd_disk);
646 geo->heads = drv->heads;
647 geo->sectors = drv->sectors;
648 geo->cylinders = drv->cylinders;
655 static int cciss_ioctl(struct inode *inode, struct file *filep,
656 unsigned int cmd, unsigned long arg)
658 struct block_device *bdev = inode->i_bdev;
659 struct gendisk *disk = bdev->bd_disk;
660 ctlr_info_t *host = get_host(disk);
661 drive_info_struct *drv = get_drv(disk);
662 int ctlr = host->ctlr;
663 void __user *argp = (void __user *)arg;
666 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
667 #endif /* CCISS_DEBUG */
670 case CCISS_GETPCIINFO:
672 cciss_pci_info_struct pciinfo;
674 if (!arg) return -EINVAL;
675 pciinfo.domain = pci_domain_nr(host->pdev->bus);
676 pciinfo.bus = host->pdev->bus->number;
677 pciinfo.dev_fn = host->pdev->devfn;
678 pciinfo.board_id = host->board_id;
679 if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct )))
683 case CCISS_GETINTINFO:
685 cciss_coalint_struct intinfo;
686 if (!arg) return -EINVAL;
687 intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
688 intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
689 if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
693 case CCISS_SETINTINFO:
695 cciss_coalint_struct intinfo;
699 if (!arg) return -EINVAL;
700 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
701 if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
703 if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
706 // printk("cciss_ioctl: delay and count cannot be 0\n");
709 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
710 /* Update the field, and then ring the doorbell */
711 writel( intinfo.delay,
712 &(host->cfgtable->HostWrite.CoalIntDelay));
713 writel( intinfo.count,
714 &(host->cfgtable->HostWrite.CoalIntCount));
715 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
717 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
718 if (!(readl(host->vaddr + SA5_DOORBELL)
721 /* delay and try again */
724 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
725 if (i >= MAX_IOCTL_CONFIG_WAIT)
729 case CCISS_GETNODENAME:
731 NodeName_type NodeName;
734 if (!arg) return -EINVAL;
736 NodeName[i] = readb(&host->cfgtable->ServerName[i]);
737 if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
741 case CCISS_SETNODENAME:
743 NodeName_type NodeName;
747 if (!arg) return -EINVAL;
748 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
750 if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
753 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
755 /* Update the field, and then ring the doorbell */
757 writeb( NodeName[i], &host->cfgtable->ServerName[i]);
759 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
761 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
762 if (!(readl(host->vaddr + SA5_DOORBELL)
765 /* delay and try again */
768 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
769 if (i >= MAX_IOCTL_CONFIG_WAIT)
774 case CCISS_GETHEARTBEAT:
776 Heartbeat_type heartbeat;
778 if (!arg) return -EINVAL;
779 heartbeat = readl(&host->cfgtable->HeartBeat);
780 if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
784 case CCISS_GETBUSTYPES:
786 BusTypes_type BusTypes;
788 if (!arg) return -EINVAL;
789 BusTypes = readl(&host->cfgtable->BusTypes);
790 if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
794 case CCISS_GETFIRMVER:
796 FirmwareVer_type firmware;
798 if (!arg) return -EINVAL;
799 memcpy(firmware, host->firm_ver, 4);
801 if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
805 case CCISS_GETDRIVVER:
807 DriverVer_type DriverVer = DRIVER_VERSION;
809 if (!arg) return -EINVAL;
811 if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
816 case CCISS_REVALIDVOLS:
817 if (bdev != bdev->bd_contains || drv != host->drv)
819 return revalidate_allvol(host);
821 case CCISS_GETLUNINFO: {
822 LogvolInfo_struct luninfo;
824 luninfo.LunID = drv->LunID;
825 luninfo.num_opens = drv->usage_count;
826 luninfo.num_parts = 0;
827 if (copy_to_user(argp, &luninfo,
828 sizeof(LogvolInfo_struct)))
832 case CCISS_DEREGDISK:
833 return rebuild_lun_table(host, disk);
836 return rebuild_lun_table(host, NULL);
840 IOCTL_Command_struct iocommand;
841 CommandList_struct *c;
845 DECLARE_COMPLETION(wait);
847 if (!arg) return -EINVAL;
849 if (!capable(CAP_SYS_RAWIO)) return -EPERM;
851 if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
853 if((iocommand.buf_size < 1) &&
854 (iocommand.Request.Type.Direction != XFER_NONE))
858 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
859 /* Check kmalloc limits */
860 if(iocommand.buf_size > 128000)
863 if(iocommand.buf_size > 0)
865 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
869 if (iocommand.Request.Type.Direction == XFER_WRITE)
871 /* Copy the data into the buffer we created */
872 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
878 memset(buff, 0, iocommand.buf_size);
880 if ((c = cmd_alloc(host , 0)) == NULL)
885 // Fill in the command type
886 c->cmd_type = CMD_IOCTL_PEND;
887 // Fill in Command Header
888 c->Header.ReplyQueue = 0; // unused in simple mode
889 if( iocommand.buf_size > 0) // buffer to fill
891 c->Header.SGList = 1;
892 c->Header.SGTotal= 1;
893 } else // no buffers to fill
895 c->Header.SGList = 0;
896 c->Header.SGTotal= 0;
898 c->Header.LUN = iocommand.LUN_info;
899 c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
901 // Fill in Request block
902 c->Request = iocommand.Request;
904 // Fill in the scatter gather information
905 if (iocommand.buf_size > 0 )
907 temp64.val = pci_map_single( host->pdev, buff,
909 PCI_DMA_BIDIRECTIONAL);
910 c->SG[0].Addr.lower = temp64.val32.lower;
911 c->SG[0].Addr.upper = temp64.val32.upper;
912 c->SG[0].Len = iocommand.buf_size;
913 c->SG[0].Ext = 0; // we are not chaining
917 /* Put the request on the tail of the request queue */
918 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
919 addQ(&host->reqQ, c);
922 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
924 wait_for_completion(&wait);
926 /* unlock the buffers from DMA */
927 temp64.val32.lower = c->SG[0].Addr.lower;
928 temp64.val32.upper = c->SG[0].Addr.upper;
929 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
930 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
932 /* Copy the error information out */
933 iocommand.error_info = *(c->err_info);
934 if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
937 cmd_free(host, c, 0);
941 if (iocommand.Request.Type.Direction == XFER_READ)
943 /* Copy the data out of the buffer we created */
944 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
947 cmd_free(host, c, 0);
952 cmd_free(host, c, 0);
955 case CCISS_BIG_PASSTHRU: {
956 BIG_IOCTL_Command_struct *ioc;
957 CommandList_struct *c;
958 unsigned char **buff = NULL;
959 int *buff_size = NULL;
965 DECLARE_COMPLETION(wait);
968 BYTE __user *data_ptr;
972 if (!capable(CAP_SYS_RAWIO))
974 ioc = (BIG_IOCTL_Command_struct *)
975 kmalloc(sizeof(*ioc), GFP_KERNEL);
980 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
984 if ((ioc->buf_size < 1) &&
985 (ioc->Request.Type.Direction != XFER_NONE)) {
989 /* Check kmalloc limits using all SGs */
990 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
994 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
998 buff = (unsigned char **) kmalloc(MAXSGENTRIES *
999 sizeof(char *), GFP_KERNEL);
1004 memset(buff, 0, MAXSGENTRIES);
1005 buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
1011 left = ioc->buf_size;
1012 data_ptr = ioc->buf;
1014 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
1015 buff_size[sg_used] = sz;
1016 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
1017 if (buff[sg_used] == NULL) {
1021 if (ioc->Request.Type.Direction == XFER_WRITE) {
1022 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
1027 memset(buff[sg_used], 0, sz);
1033 if ((c = cmd_alloc(host , 0)) == NULL) {
1037 c->cmd_type = CMD_IOCTL_PEND;
1038 c->Header.ReplyQueue = 0;
1040 if( ioc->buf_size > 0) {
1041 c->Header.SGList = sg_used;
1042 c->Header.SGTotal= sg_used;
1044 c->Header.SGList = 0;
1045 c->Header.SGTotal= 0;
1047 c->Header.LUN = ioc->LUN_info;
1048 c->Header.Tag.lower = c->busaddr;
1050 c->Request = ioc->Request;
1051 if (ioc->buf_size > 0 ) {
1053 for(i=0; i<sg_used; i++) {
1054 temp64.val = pci_map_single( host->pdev, buff[i],
1056 PCI_DMA_BIDIRECTIONAL);
1057 c->SG[i].Addr.lower = temp64.val32.lower;
1058 c->SG[i].Addr.upper = temp64.val32.upper;
1059 c->SG[i].Len = buff_size[i];
1060 c->SG[i].Ext = 0; /* we are not chaining */
1064 /* Put the request on the tail of the request queue */
1065 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1066 addQ(&host->reqQ, c);
1069 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1070 wait_for_completion(&wait);
1071 /* unlock the buffers from DMA */
1072 for(i=0; i<sg_used; i++) {
1073 temp64.val32.lower = c->SG[i].Addr.lower;
1074 temp64.val32.upper = c->SG[i].Addr.upper;
1075 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
1076 buff_size[i], PCI_DMA_BIDIRECTIONAL);
1078 /* Copy the error information out */
1079 ioc->error_info = *(c->err_info);
1080 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1081 cmd_free(host, c, 0);
1085 if (ioc->Request.Type.Direction == XFER_READ) {
1086 /* Copy the data out of the buffer we created */
1087 BYTE __user *ptr = ioc->buf;
1088 for(i=0; i< sg_used; i++) {
1089 if (copy_to_user(ptr, buff[i], buff_size[i])) {
1090 cmd_free(host, c, 0);
1094 ptr += buff_size[i];
1097 cmd_free(host, c, 0);
1101 for(i=0; i<sg_used; i++)
1116 * revalidate_allvol is for online array config utilities. After a
1117 * utility reconfigures the drives in the array, it can use this function
1118 * (through an ioctl) to make the driver zap any previous disk structs for
1119 * that controller and get new ones.
1121 * Right now I'm using the getgeometry() function to do this, but this
1122 * function should probably be finer grained and allow you to revalidate one
1123 * particualar logical volume (instead of all of them on a particular
1126 static int revalidate_allvol(ctlr_info_t *host)
1128 int ctlr = host->ctlr, i;
1129 unsigned long flags;
1131 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1132 if (host->usage_count > 1) {
1133 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1134 printk(KERN_WARNING "cciss: Device busy for volume"
1135 " revalidation (usage=%d)\n", host->usage_count);
1138 host->usage_count++;
1139 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1141 for(i=0; i< NWD; i++) {
1142 struct gendisk *disk = host->gendisk[i];
1144 request_queue_t *q = disk->queue;
1146 if (disk->flags & GENHD_FL_UP)
1149 blk_cleanup_queue(q);
1154 * Set the partition and block size structures for all volumes
1155 * on this controller to zero. We will reread all of this data
1157 memset(host->drv, 0, sizeof(drive_info_struct)
1160 * Tell the array controller not to give us any interrupts while
1161 * we check the new geometry. Then turn interrupts back on when
1164 host->access.set_intr_mask(host, CCISS_INTR_OFF);
1165 cciss_getgeometry(ctlr);
1166 host->access.set_intr_mask(host, CCISS_INTR_ON);
1168 /* Loop through each real device */
1169 for (i = 0; i < NWD; i++) {
1170 struct gendisk *disk = host->gendisk[i];
1171 drive_info_struct *drv = &(host->drv[i]);
1172 /* we must register the controller even if no disks exist */
1173 /* this is for the online array utilities */
1174 if (!drv->heads && i)
1176 blk_queue_hardsect_size(drv->queue, drv->block_size);
1177 set_capacity(disk, drv->nr_blocks);
1180 host->usage_count--;
1184 /* This function will check the usage_count of the drive to be updated/added.
1185 * If the usage_count is zero then the drive information will be updated and
1186 * the disk will be re-registered with the kernel. If not then it will be
1187 * left alone for the next reboot. The exception to this is disk 0 which
1188 * will always be left registered with the kernel since it is also the
1189 * controller node. Any changes to disk 0 will show up on the next
1192 static void cciss_update_drive_info(int ctlr, int drv_index)
1194 ctlr_info_t *h = hba[ctlr];
1195 struct gendisk *disk;
1196 ReadCapdata_struct *size_buff = NULL;
1197 InquiryData_struct *inq_buff = NULL;
1198 unsigned int block_size;
1199 unsigned int total_size;
1200 unsigned long flags = 0;
1203 /* if the disk already exists then deregister it before proceeding*/
1204 if (h->drv[drv_index].raid_level != -1){
1205 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1206 h->drv[drv_index].busy_configuring = 1;
1207 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1208 ret = deregister_disk(h->gendisk[drv_index],
1209 &h->drv[drv_index], 0);
1210 h->drv[drv_index].busy_configuring = 0;
1213 /* If the disk is in use return */
1218 /* Get information about the disk and modify the driver sturcture */
1219 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1220 if (size_buff == NULL)
1222 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1223 if (inq_buff == NULL)
1226 cciss_read_capacity(ctlr, drv_index, size_buff, 1,
1227 &total_size, &block_size);
1228 cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
1229 inq_buff, &h->drv[drv_index]);
1232 disk = h->gendisk[drv_index];
1233 set_capacity(disk, h->drv[drv_index].nr_blocks);
1236 /* if it's the controller it's already added */
1238 disk->queue = blk_init_queue(do_cciss_request, &h->lock);
1240 /* Set up queue information */
1241 disk->queue->backing_dev_info.ra_pages = READ_AHEAD;
1242 blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask);
1244 /* This is a hardware imposed limit. */
1245 blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES);
1247 /* This is a limit in the driver and could be eliminated. */
1248 blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES);
1250 blk_queue_max_sectors(disk->queue, 512);
1252 disk->queue->queuedata = hba[ctlr];
1254 blk_queue_hardsect_size(disk->queue,
1255 hba[ctlr]->drv[drv_index].block_size);
1257 h->drv[drv_index].queue = disk->queue;
1266 printk(KERN_ERR "cciss: out of memory\n");
1270 /* This function will find the first index of the controllers drive array
1271 * that has a -1 for the raid_level and will return that index. This is
1272 * where new drives will be added. If the index to be returned is greater
1273 * than the highest_lun index for the controller then highest_lun is set
1274 * to this new index. If there are no available indexes then -1 is returned.
1276 static int cciss_find_free_drive_index(int ctlr)
1280 for (i=0; i < CISS_MAX_LUN; i++){
1281 if (hba[ctlr]->drv[i].raid_level == -1){
1282 if (i > hba[ctlr]->highest_lun)
1283 hba[ctlr]->highest_lun = i;
1290 /* This function will add and remove logical drives from the Logical
1291 * drive array of the controller and maintain persistancy of ordering
1292 * so that mount points are preserved until the next reboot. This allows
1293 * for the removal of logical drives in the middle of the drive array
1294 * without a re-ordering of those drives.
1296 * h = The controller to perform the operations on
1297 * del_disk = The disk to remove if specified. If the value given
1298 * is NULL then no disk is removed.
1300 static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk)
1304 ReportLunData_struct *ld_buff = NULL;
1305 drive_info_struct *drv = NULL;
1312 unsigned long flags;
1314 /* Set busy_configuring flag for this operation */
1315 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1316 if (h->num_luns >= CISS_MAX_LUN){
1317 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1321 if (h->busy_configuring){
1322 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1325 h->busy_configuring = 1;
1327 /* if del_disk is NULL then we are being called to add a new disk
1328 * and update the logical drive table. If it is not NULL then
1329 * we will check if the disk is in use or not.
1331 if (del_disk != NULL){
1332 drv = get_drv(del_disk);
1333 drv->busy_configuring = 1;
1334 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1335 return_code = deregister_disk(del_disk, drv, 1);
1336 drv->busy_configuring = 0;
1337 h->busy_configuring = 0;
1340 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1341 if (!capable(CAP_SYS_RAWIO))
1344 ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1345 if (ld_buff == NULL)
1348 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1349 sizeof(ReportLunData_struct), 0, 0, 0,
1352 if (return_code == IO_OK){
1353 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
1354 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
1355 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
1356 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1357 } else{ /* reading number of logical volumes failed */
1358 printk(KERN_WARNING "cciss: report logical volume"
1359 " command failed\n");
1364 num_luns = listlength / 8; /* 8 bytes per entry */
1365 if (num_luns > CISS_MAX_LUN){
1366 num_luns = CISS_MAX_LUN;
1367 printk(KERN_WARNING "cciss: more luns configured"
1368 " on controller than can be handled by"
1372 /* Compare controller drive array to drivers drive array.
1373 * Check for updates in the drive information and any new drives
1374 * on the controller.
1376 for (i=0; i < num_luns; i++){
1382 (unsigned int)(ld_buff->LUN[i][3])) << 24;
1384 (unsigned int)(ld_buff->LUN[i][2])) << 16;
1386 (unsigned int)(ld_buff->LUN[i][1])) << 8;
1388 (unsigned int)(ld_buff->LUN[i][0]);
1390 /* Find if the LUN is already in the drive array
1391 * of the controller. If so then update its info
1392 * if not is use. If it does not exist then find
1393 * the first free index and add it.
1395 for (j=0; j <= h->highest_lun; j++){
1396 if (h->drv[j].LunID == lunid){
1402 /* check if the drive was found already in the array */
1404 drv_index = cciss_find_free_drive_index(ctlr);
1405 if (drv_index == -1)
1409 h->drv[drv_index].LunID = lunid;
1410 cciss_update_drive_info(ctlr, drv_index);
1416 h->busy_configuring = 0;
1417 /* We return -1 here to tell the ACU that we have registered/updated
1418 * all of the drives that we can and to keep it from calling us
1423 printk(KERN_ERR "cciss: out of memory\n");
1427 /* This function will deregister the disk and it's queue from the
1428 * kernel. It must be called with the controller lock held and the
1429 * drv structures busy_configuring flag set. It's parameters are:
1431 * disk = This is the disk to be deregistered
1432 * drv = This is the drive_info_struct associated with the disk to be
1433 * deregistered. It contains information about the disk used
1435 * clear_all = This flag determines whether or not the disk information
1436 * is going to be completely cleared out and the highest_lun
1437 * reset. Sometimes we want to clear out information about
1438 * the disk in preperation for re-adding it. In this case
1439 * the highest_lun should be left unchanged and the LunID
1440 * should not be cleared.
1442 static int deregister_disk(struct gendisk *disk, drive_info_struct *drv,
1445 ctlr_info_t *h = get_host(disk);
1447 if (!capable(CAP_SYS_RAWIO))
1450 /* make sure logical volume is NOT is use */
1451 if(clear_all || (h->gendisk[0] == disk)) {
1452 if (drv->usage_count > 1)
1456 if( drv->usage_count > 0 )
1459 /* invalidate the devices and deregister the disk. If it is disk
1460 * zero do not deregister it but just zero out it's values. This
1461 * allows us to delete disk zero but keep the controller registered.
1463 if (h->gendisk[0] != disk){
1465 request_queue_t *q = disk->queue;
1466 if (disk->flags & GENHD_FL_UP)
1469 blk_cleanup_queue(q);
1476 /* zero out the disk size info */
1478 drv->block_size = 0;
1482 drv->raid_level = -1; /* This can be used as a flag variable to
1483 * indicate that this element of the drive
1488 /* check to see if it was the last disk */
1489 if (drv == h->drv + h->highest_lun) {
1490 /* if so, find the new hightest lun */
1491 int i, newhighest =-1;
1492 for(i=0; i<h->highest_lun; i++) {
1493 /* if the disk has size > 0, it is available */
1494 if (h->drv[i].heads)
1497 h->highest_lun = newhighest;
1505 static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
1507 unsigned int use_unit_num, /* 0: address the controller,
1508 1: address logical volume log_unit,
1509 2: periph device address is scsi3addr */
1510 unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
1513 ctlr_info_t *h= hba[ctlr];
1514 u64bit buff_dma_handle;
1517 c->cmd_type = CMD_IOCTL_PEND;
1518 c->Header.ReplyQueue = 0;
1520 c->Header.SGList = 1;
1521 c->Header.SGTotal= 1;
1523 c->Header.SGList = 0;
1524 c->Header.SGTotal= 0;
1526 c->Header.Tag.lower = c->busaddr;
1528 c->Request.Type.Type = cmd_type;
1529 if (cmd_type == TYPE_CMD) {
1532 /* If the logical unit number is 0 then, this is going
1533 to controller so It's a physical command
1534 mode = 0 target = 0. So we have nothing to write.
1535 otherwise, if use_unit_num == 1,
1536 mode = 1(volume set addressing) target = LUNID
1537 otherwise, if use_unit_num == 2,
1538 mode = 0(periph dev addr) target = scsi3addr */
1539 if (use_unit_num == 1) {
1540 c->Header.LUN.LogDev.VolId=
1541 h->drv[log_unit].LunID;
1542 c->Header.LUN.LogDev.Mode = 1;
1543 } else if (use_unit_num == 2) {
1544 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
1545 c->Header.LUN.LogDev.Mode = 0;
1547 /* are we trying to read a vital product page */
1548 if(page_code != 0) {
1549 c->Request.CDB[1] = 0x01;
1550 c->Request.CDB[2] = page_code;
1552 c->Request.CDBLen = 6;
1553 c->Request.Type.Attribute = ATTR_SIMPLE;
1554 c->Request.Type.Direction = XFER_READ;
1555 c->Request.Timeout = 0;
1556 c->Request.CDB[0] = CISS_INQUIRY;
1557 c->Request.CDB[4] = size & 0xFF;
1559 case CISS_REPORT_LOG:
1560 case CISS_REPORT_PHYS:
1561 /* Talking to controller so It's a physical command
1562 mode = 00 target = 0. Nothing to write.
1564 c->Request.CDBLen = 12;
1565 c->Request.Type.Attribute = ATTR_SIMPLE;
1566 c->Request.Type.Direction = XFER_READ;
1567 c->Request.Timeout = 0;
1568 c->Request.CDB[0] = cmd;
1569 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1570 c->Request.CDB[7] = (size >> 16) & 0xFF;
1571 c->Request.CDB[8] = (size >> 8) & 0xFF;
1572 c->Request.CDB[9] = size & 0xFF;
1575 case CCISS_READ_CAPACITY:
1576 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1577 c->Header.LUN.LogDev.Mode = 1;
1578 c->Request.CDBLen = 10;
1579 c->Request.Type.Attribute = ATTR_SIMPLE;
1580 c->Request.Type.Direction = XFER_READ;
1581 c->Request.Timeout = 0;
1582 c->Request.CDB[0] = cmd;
1584 case CCISS_CACHE_FLUSH:
1585 c->Request.CDBLen = 12;
1586 c->Request.Type.Attribute = ATTR_SIMPLE;
1587 c->Request.Type.Direction = XFER_WRITE;
1588 c->Request.Timeout = 0;
1589 c->Request.CDB[0] = BMIC_WRITE;
1590 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1594 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
1597 } else if (cmd_type == TYPE_MSG) {
1599 case 0: /* ABORT message */
1600 c->Request.CDBLen = 12;
1601 c->Request.Type.Attribute = ATTR_SIMPLE;
1602 c->Request.Type.Direction = XFER_WRITE;
1603 c->Request.Timeout = 0;
1604 c->Request.CDB[0] = cmd; /* abort */
1605 c->Request.CDB[1] = 0; /* abort a command */
1606 /* buff contains the tag of the command to abort */
1607 memcpy(&c->Request.CDB[4], buff, 8);
1609 case 1: /* RESET message */
1610 c->Request.CDBLen = 12;
1611 c->Request.Type.Attribute = ATTR_SIMPLE;
1612 c->Request.Type.Direction = XFER_WRITE;
1613 c->Request.Timeout = 0;
1614 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
1615 c->Request.CDB[0] = cmd; /* reset */
1616 c->Request.CDB[1] = 0x04; /* reset a LUN */
1617 case 3: /* No-Op message */
1618 c->Request.CDBLen = 1;
1619 c->Request.Type.Attribute = ATTR_SIMPLE;
1620 c->Request.Type.Direction = XFER_WRITE;
1621 c->Request.Timeout = 0;
1622 c->Request.CDB[0] = cmd;
1626 "cciss%d: unknown message type %d\n",
1632 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1635 /* Fill in the scatter gather information */
1637 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1638 buff, size, PCI_DMA_BIDIRECTIONAL);
1639 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1640 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1641 c->SG[0].Len = size;
1642 c->SG[0].Ext = 0; /* we are not chaining */
1646 static int sendcmd_withirq(__u8 cmd,
1650 unsigned int use_unit_num,
1651 unsigned int log_unit,
1655 ctlr_info_t *h = hba[ctlr];
1656 CommandList_struct *c;
1657 u64bit buff_dma_handle;
1658 unsigned long flags;
1660 DECLARE_COMPLETION(wait);
1662 if ((c = cmd_alloc(h , 0)) == NULL)
1664 return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1665 log_unit, page_code, NULL, cmd_type);
1666 if (return_status != IO_OK) {
1668 return return_status;
1673 /* Put the request on the tail of the queue and send it */
1674 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1678 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1680 wait_for_completion(&wait);
1682 if(c->err_info->CommandStatus != 0)
1683 { /* an error has occurred */
1684 switch(c->err_info->CommandStatus)
1686 case CMD_TARGET_STATUS:
1687 printk(KERN_WARNING "cciss: cmd %p has "
1688 " completed with errors\n", c);
1689 if( c->err_info->ScsiStatus)
1691 printk(KERN_WARNING "cciss: cmd %p "
1692 "has SCSI Status = %x\n",
1694 c->err_info->ScsiStatus);
1698 case CMD_DATA_UNDERRUN:
1699 case CMD_DATA_OVERRUN:
1700 /* expected for inquire and report lun commands */
1703 printk(KERN_WARNING "cciss: Cmd %p is "
1704 "reported invalid\n", c);
1705 return_status = IO_ERROR;
1707 case CMD_PROTOCOL_ERR:
1708 printk(KERN_WARNING "cciss: cmd %p has "
1709 "protocol error \n", c);
1710 return_status = IO_ERROR;
1712 case CMD_HARDWARE_ERR:
1713 printk(KERN_WARNING "cciss: cmd %p had "
1714 " hardware error\n", c);
1715 return_status = IO_ERROR;
1717 case CMD_CONNECTION_LOST:
1718 printk(KERN_WARNING "cciss: cmd %p had "
1719 "connection lost\n", c);
1720 return_status = IO_ERROR;
1723 printk(KERN_WARNING "cciss: cmd %p was "
1725 return_status = IO_ERROR;
1727 case CMD_ABORT_FAILED:
1728 printk(KERN_WARNING "cciss: cmd %p reports "
1729 "abort failed\n", c);
1730 return_status = IO_ERROR;
1732 case CMD_UNSOLICITED_ABORT:
1734 "cciss%d: unsolicited abort %p\n",
1736 if (c->retry_count < MAX_CMD_RETRIES) {
1738 "cciss%d: retrying %p\n",
1741 /* erase the old error information */
1742 memset(c->err_info, 0,
1743 sizeof(ErrorInfo_struct));
1744 return_status = IO_OK;
1745 INIT_COMPLETION(wait);
1748 return_status = IO_ERROR;
1751 printk(KERN_WARNING "cciss: cmd %p returned "
1752 "unknown status %x\n", c,
1753 c->err_info->CommandStatus);
1754 return_status = IO_ERROR;
1757 /* unlock the buffers from DMA */
1758 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
1759 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
1760 pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1761 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
1763 return(return_status);
1766 static void cciss_geometry_inquiry(int ctlr, int logvol,
1767 int withirq, unsigned int total_size,
1768 unsigned int block_size, InquiryData_struct *inq_buff,
1769 drive_info_struct *drv)
1772 memset(inq_buff, 0, sizeof(InquiryData_struct));
1774 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1775 inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1777 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1778 sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1779 if (return_code == IO_OK) {
1780 if(inq_buff->data_byte[8] == 0xFF) {
1782 "cciss: reading geometry failed, volume "
1783 "does not support reading geometry\n");
1784 drv->block_size = block_size;
1785 drv->nr_blocks = total_size;
1787 drv->sectors = 32; // Sectors per track
1788 drv->cylinders = total_size / 255 / 32;
1792 drv->block_size = block_size;
1793 drv->nr_blocks = total_size;
1794 drv->heads = inq_buff->data_byte[6];
1795 drv->sectors = inq_buff->data_byte[7];
1796 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1797 drv->cylinders += inq_buff->data_byte[5];
1798 drv->raid_level = inq_buff->data_byte[8];
1799 t = drv->heads * drv->sectors;
1801 drv->cylinders = total_size/t;
1804 } else { /* Get geometry failed */
1805 printk(KERN_WARNING "cciss: reading geometry failed\n");
1807 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
1808 drv->heads, drv->sectors, drv->cylinders);
1811 cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1812 int withirq, unsigned int *total_size, unsigned int *block_size)
1815 memset(buf, 0, sizeof(*buf));
1817 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1818 ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1820 return_code = sendcmd(CCISS_READ_CAPACITY,
1821 ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1822 if (return_code == IO_OK) {
1823 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1824 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1825 } else { /* read capacity command failed */
1826 printk(KERN_WARNING "cciss: read capacity failed\n");
1828 *block_size = BLOCK_SIZE;
1830 printk(KERN_INFO " blocks= %u block_size= %d\n",
1831 *total_size, *block_size);
1835 static int cciss_revalidate(struct gendisk *disk)
1837 ctlr_info_t *h = get_host(disk);
1838 drive_info_struct *drv = get_drv(disk);
1841 unsigned int block_size;
1842 unsigned int total_size;
1843 ReadCapdata_struct *size_buff = NULL;
1844 InquiryData_struct *inq_buff = NULL;
1846 for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1848 if(h->drv[logvol].LunID == drv->LunID) {
1854 if (!FOUND) return 1;
1856 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1857 if (size_buff == NULL)
1859 printk(KERN_WARNING "cciss: out of memory\n");
1862 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1863 if (inq_buff == NULL)
1865 printk(KERN_WARNING "cciss: out of memory\n");
1870 cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1871 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1873 blk_queue_hardsect_size(drv->queue, drv->block_size);
1874 set_capacity(disk, drv->nr_blocks);
1882 * Wait polling for a command to complete.
1883 * The memory mapped FIFO is polled for the completion.
1884 * Used only at init time, interrupts from the HBA are disabled.
1886 static unsigned long pollcomplete(int ctlr)
1891 /* Wait (up to 20 seconds) for a command to complete */
1893 for (i = 20 * HZ; i > 0; i--) {
1894 done = hba[ctlr]->access.command_completed(hba[ctlr]);
1895 if (done == FIFO_EMPTY)
1896 schedule_timeout_uninterruptible(1);
1900 /* Invalid address to tell caller we ran out of time */
1904 static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete)
1906 /* We get in here if sendcmd() is polling for completions
1907 and gets some command back that it wasn't expecting --
1908 something other than that which it just sent down.
1909 Ordinarily, that shouldn't happen, but it can happen when
1910 the scsi tape stuff gets into error handling mode, and
1911 starts using sendcmd() to try to abort commands and
1912 reset tape drives. In that case, sendcmd may pick up
1913 completions of commands that were sent to logical drives
1914 through the block i/o system, or cciss ioctls completing, etc.
1915 In that case, we need to save those completions for later
1916 processing by the interrupt handler.
1919 #ifdef CONFIG_CISS_SCSI_TAPE
1920 struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects;
1922 /* If it's not the scsi tape stuff doing error handling, (abort */
1923 /* or reset) then we don't expect anything weird. */
1924 if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) {
1926 printk( KERN_WARNING "cciss cciss%d: SendCmd "
1927 "Invalid command list address returned! (%lx)\n",
1929 /* not much we can do. */
1930 #ifdef CONFIG_CISS_SCSI_TAPE
1934 /* We've sent down an abort or reset, but something else
1936 if (srl->ncompletions >= (NR_CMDS + 2)) {
1937 /* Uh oh. No room to save it for later... */
1938 printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, "
1939 "reject list overflow, command lost!\n", ctlr);
1942 /* Save it for later */
1943 srl->complete[srl->ncompletions] = complete;
1944 srl->ncompletions++;
1950 * Send a command to the controller, and wait for it to complete.
1951 * Only used at init time.
1958 unsigned int use_unit_num, /* 0: address the controller,
1959 1: address logical volume log_unit,
1960 2: periph device address is scsi3addr */
1961 unsigned int log_unit,
1963 unsigned char *scsi3addr,
1966 CommandList_struct *c;
1968 unsigned long complete;
1969 ctlr_info_t *info_p= hba[ctlr];
1970 u64bit buff_dma_handle;
1971 int status, done = 0;
1973 if ((c = cmd_alloc(info_p, 1)) == NULL) {
1974 printk(KERN_WARNING "cciss: unable to get memory");
1977 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1978 log_unit, page_code, scsi3addr, cmd_type);
1979 if (status != IO_OK) {
1980 cmd_free(info_p, c, 1);
1988 printk(KERN_DEBUG "cciss: turning intr off\n");
1989 #endif /* CCISS_DEBUG */
1990 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1992 /* Make sure there is room in the command FIFO */
1993 /* Actually it should be completely empty at this time */
1994 /* unless we are in here doing error handling for the scsi */
1995 /* tape side of the driver. */
1996 for (i = 200000; i > 0; i--)
1998 /* if fifo isn't full go */
1999 if (!(info_p->access.fifo_full(info_p)))
2005 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
2006 " waiting!\n", ctlr);
2011 info_p->access.submit_command(info_p, c);
2014 complete = pollcomplete(ctlr);
2017 printk(KERN_DEBUG "cciss: command completed\n");
2018 #endif /* CCISS_DEBUG */
2020 if (complete == 1) {
2021 printk( KERN_WARNING
2022 "cciss cciss%d: SendCmd Timeout out, "
2023 "No command list address returned!\n",
2030 /* This will need to change for direct lookup completions */
2031 if ( (complete & CISS_ERROR_BIT)
2032 && (complete & ~CISS_ERROR_BIT) == c->busaddr)
2034 /* if data overrun or underun on Report command
2037 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
2038 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
2039 (c->Request.CDB[0] == CISS_INQUIRY)) &&
2040 ((c->err_info->CommandStatus ==
2041 CMD_DATA_OVERRUN) ||
2042 (c->err_info->CommandStatus ==
2046 complete = c->busaddr;
2048 if (c->err_info->CommandStatus ==
2049 CMD_UNSOLICITED_ABORT) {
2050 printk(KERN_WARNING "cciss%d: "
2051 "unsolicited abort %p\n",
2053 if (c->retry_count < MAX_CMD_RETRIES) {
2055 "cciss%d: retrying %p\n",
2058 /* erase the old error */
2060 memset(c->err_info, 0,
2061 sizeof(ErrorInfo_struct));
2065 "cciss%d: retried %p too "
2066 "many times\n", ctlr, c);
2070 } else if (c->err_info->CommandStatus == CMD_UNABORTABLE) {
2071 printk(KERN_WARNING "cciss%d: command could not be aborted.\n", ctlr);
2075 printk(KERN_WARNING "ciss ciss%d: sendcmd"
2076 " Error %x \n", ctlr,
2077 c->err_info->CommandStatus);
2078 printk(KERN_WARNING "ciss ciss%d: sendcmd"
2080 " size %x\n num %x value %x\n", ctlr,
2081 c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
2082 c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
2083 c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
2088 /* This will need changing for direct lookup completions */
2089 if (complete != c->busaddr) {
2090 if (add_sendcmd_reject(cmd, ctlr, complete) != 0) {
2091 BUG(); /* we are pretty much hosed if we get here. */
2099 /* unlock the data buffer from DMA */
2100 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
2101 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
2102 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
2103 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
2104 #ifdef CONFIG_CISS_SCSI_TAPE
2105 /* if we saved some commands for later, process them now. */
2106 if (info_p->scsi_rejects.ncompletions > 0)
2107 do_cciss_intr(0, info_p, NULL);
2109 cmd_free(info_p, c, 1);
2113 * Map (physical) PCI mem into (virtual) kernel space
2115 static void __iomem *remap_pci_mem(ulong base, ulong size)
2117 ulong page_base = ((ulong) base) & PAGE_MASK;
2118 ulong page_offs = ((ulong) base) - page_base;
2119 void __iomem *page_remapped = ioremap(page_base, page_offs+size);
2121 return page_remapped ? (page_remapped + page_offs) : NULL;
2125 * Takes jobs of the Q and sends them to the hardware, then puts it on
2126 * the Q to wait for completion.
2128 static void start_io( ctlr_info_t *h)
2130 CommandList_struct *c;
2132 while(( c = h->reqQ) != NULL )
2134 /* can't do anything if fifo is full */
2135 if ((h->access.fifo_full(h))) {
2136 printk(KERN_WARNING "cciss: fifo full\n");
2140 /* Get the frist entry from the Request Q */
2141 removeQ(&(h->reqQ), c);
2144 /* Tell the controller execute command */
2145 h->access.submit_command(h, c);
2147 /* Put job onto the completed Q */
2148 addQ (&(h->cmpQ), c);
2152 static inline void complete_buffers(struct bio *bio, int status)
2155 struct bio *xbh = bio->bi_next;
2156 int nr_sectors = bio_sectors(bio);
2158 bio->bi_next = NULL;
2159 blk_finished_io(len);
2160 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
2165 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
2166 /* Zeros out the error record and then resends the command back */
2167 /* to the controller */
2168 static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
2170 /* erase the old error information */
2171 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
2173 /* add it to software queue and then send it to the controller */
2176 if(h->Qdepth > h->maxQsinceinit)
2177 h->maxQsinceinit = h->Qdepth;
2181 /* checks the status of the job and calls complete buffers to mark all
2182 * buffers for the completed job.
2184 static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
2195 if(cmd->err_info->CommandStatus != 0)
2196 { /* an error has occurred */
2197 switch(cmd->err_info->CommandStatus)
2199 unsigned char sense_key;
2200 case CMD_TARGET_STATUS:
2203 if( cmd->err_info->ScsiStatus == 0x02)
2205 printk(KERN_WARNING "cciss: cmd %p "
2206 "has CHECK CONDITION "
2207 " byte 2 = 0x%x\n", cmd,
2208 cmd->err_info->SenseInfo[2]
2210 /* check the sense key */
2212 cmd->err_info->SenseInfo[2];
2213 /* no status or recovered error */
2214 if((sense_key == 0x0) ||
2221 printk(KERN_WARNING "cciss: cmd %p "
2222 "has SCSI Status 0x%x\n",
2223 cmd, cmd->err_info->ScsiStatus);
2226 case CMD_DATA_UNDERRUN:
2227 printk(KERN_WARNING "cciss: cmd %p has"
2228 " completed with data underrun "
2231 case CMD_DATA_OVERRUN:
2232 printk(KERN_WARNING "cciss: cmd %p has"
2233 " completed with data overrun "
2237 printk(KERN_WARNING "cciss: cmd %p is "
2238 "reported invalid\n", cmd);
2241 case CMD_PROTOCOL_ERR:
2242 printk(KERN_WARNING "cciss: cmd %p has "
2243 "protocol error \n", cmd);
2246 case CMD_HARDWARE_ERR:
2247 printk(KERN_WARNING "cciss: cmd %p had "
2248 " hardware error\n", cmd);
2251 case CMD_CONNECTION_LOST:
2252 printk(KERN_WARNING "cciss: cmd %p had "
2253 "connection lost\n", cmd);
2257 printk(KERN_WARNING "cciss: cmd %p was "
2261 case CMD_ABORT_FAILED:
2262 printk(KERN_WARNING "cciss: cmd %p reports "
2263 "abort failed\n", cmd);
2266 case CMD_UNSOLICITED_ABORT:
2267 printk(KERN_WARNING "cciss%d: unsolicited "
2268 "abort %p\n", h->ctlr, cmd);
2269 if (cmd->retry_count < MAX_CMD_RETRIES) {
2272 "cciss%d: retrying %p\n",
2277 "cciss%d: %p retried too "
2278 "many times\n", h->ctlr, cmd);
2282 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2287 printk(KERN_WARNING "cciss: cmd %p returned "
2288 "unknown status %x\n", cmd,
2289 cmd->err_info->CommandStatus);
2293 /* We need to return this command */
2295 resend_cciss_cmd(h,cmd);
2298 /* command did not need to be retried */
2299 /* unmap the DMA mapping for all the scatter gather elements */
2300 for(i=0; i<cmd->Header.SGList; i++) {
2301 temp64.val32.lower = cmd->SG[i].Addr.lower;
2302 temp64.val32.upper = cmd->SG[i].Addr.upper;
2303 pci_unmap_page(hba[cmd->ctlr]->pdev,
2304 temp64.val, cmd->SG[i].Len,
2305 (cmd->Request.Type.Direction == XFER_READ) ?
2306 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2308 complete_buffers(cmd->rq->bio, status);
2311 printk("Done with %p\n", cmd->rq);
2312 #endif /* CCISS_DEBUG */
2314 end_that_request_last(cmd->rq, status ? 1 : -EIO);
2319 * Get a request and submit it to the controller.
2321 static void do_cciss_request(request_queue_t *q)
2323 ctlr_info_t *h= q->queuedata;
2324 CommandList_struct *c;
2326 struct request *creq;
2328 struct scatterlist tmp_sg[MAXSGENTRIES];
2329 drive_info_struct *drv;
2332 /* We call start_io here in case there is a command waiting on the
2333 * queue that has not been sent.
2335 if (blk_queue_plugged(q))
2339 creq = elv_next_request(q);
2343 if (creq->nr_phys_segments > MAXSGENTRIES)
2346 if (( c = cmd_alloc(h, 1)) == NULL)
2349 blkdev_dequeue_request(creq);
2351 spin_unlock_irq(q->queue_lock);
2353 c->cmd_type = CMD_RWREQ;
2356 /* fill in the request */
2357 drv = creq->rq_disk->private_data;
2358 c->Header.ReplyQueue = 0; // unused in simple mode
2359 /* got command from pool, so use the command block index instead */
2360 /* for direct lookups. */
2361 /* The first 2 bits are reserved for controller error reporting. */
2362 c->Header.Tag.lower = (c->cmdindex << 3);
2363 c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */
2364 c->Header.LUN.LogDev.VolId= drv->LunID;
2365 c->Header.LUN.LogDev.Mode = 1;
2366 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2367 c->Request.Type.Type = TYPE_CMD; // It is a command.
2368 c->Request.Type.Attribute = ATTR_SIMPLE;
2369 c->Request.Type.Direction =
2370 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
2371 c->Request.Timeout = 0; // Don't time out
2372 c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2373 start_blk = creq->sector;
2375 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2376 (int) creq->nr_sectors);
2377 #endif /* CCISS_DEBUG */
2379 seg = blk_rq_map_sg(q, creq, tmp_sg);
2381 /* get the DMA records for the setup */
2382 if (c->Request.Type.Direction == XFER_READ)
2383 dir = PCI_DMA_FROMDEVICE;
2385 dir = PCI_DMA_TODEVICE;
2387 for (i=0; i<seg; i++)
2389 c->SG[i].Len = tmp_sg[i].length;
2390 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2391 tmp_sg[i].offset, tmp_sg[i].length,
2393 c->SG[i].Addr.lower = temp64.val32.lower;
2394 c->SG[i].Addr.upper = temp64.val32.upper;
2395 c->SG[i].Ext = 0; // we are not chaining
2397 /* track how many SG entries we are using */
2402 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2403 #endif /* CCISS_DEBUG */
2405 c->Header.SGList = c->Header.SGTotal = seg;
2406 c->Request.CDB[1]= 0;
2407 c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB
2408 c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2409 c->Request.CDB[4]= (start_blk >> 8) & 0xff;
2410 c->Request.CDB[5]= start_blk & 0xff;
2411 c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2412 c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff;
2413 c->Request.CDB[8]= creq->nr_sectors & 0xff;
2414 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2416 spin_lock_irq(q->queue_lock);
2420 if(h->Qdepth > h->maxQsinceinit)
2421 h->maxQsinceinit = h->Qdepth;
2427 /* We will already have the driver lock here so not need
2433 static inline unsigned long get_next_completion(ctlr_info_t *h)
2435 #ifdef CONFIG_CISS_SCSI_TAPE
2436 /* Any rejects from sendcmd() lying around? Process them first */
2437 if (h->scsi_rejects.ncompletions == 0)
2438 return h->access.command_completed(h);
2440 struct sendcmd_reject_list *srl;
2442 srl = &h->scsi_rejects;
2443 n = --srl->ncompletions;
2444 /* printk("cciss%d: processing saved reject\n", h->ctlr); */
2446 return srl->complete[n];
2449 return h->access.command_completed(h);
2453 static inline int interrupt_pending(ctlr_info_t *h)
2455 #ifdef CONFIG_CISS_SCSI_TAPE
2456 return ( h->access.intr_pending(h)
2457 || (h->scsi_rejects.ncompletions > 0));
2459 return h->access.intr_pending(h);
2463 static inline long interrupt_not_for_us(ctlr_info_t *h)
2465 #ifdef CONFIG_CISS_SCSI_TAPE
2466 return (((h->access.intr_pending(h) == 0) ||
2467 (h->interrupts_enabled == 0))
2468 && (h->scsi_rejects.ncompletions == 0));
2470 return (((h->access.intr_pending(h) == 0) ||
2471 (h->interrupts_enabled == 0)));
2475 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2477 ctlr_info_t *h = dev_id;
2478 CommandList_struct *c;
2479 unsigned long flags;
2482 int start_queue = h->next_to_run;
2484 if (interrupt_not_for_us(h))
2487 * If there are completed commands in the completion queue,
2488 * we had better do something about it.
2490 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2491 while (interrupt_pending(h)) {
2492 while((a = get_next_completion(h)) != FIFO_EMPTY) {
2496 if (a2 >= NR_CMDS) {
2497 printk(KERN_WARNING "cciss: controller cciss%d failed, stopping.\n", h->ctlr);
2498 fail_all_cmds(h->ctlr);
2502 c = h->cmd_pool + a2;
2507 if ((c = h->cmpQ) == NULL) {
2508 printk(KERN_WARNING "cciss: Completion of %08x ignored\n", a1);
2511 while(c->busaddr != a) {
2518 * If we've found the command, take it off the
2519 * completion Q and free it
2521 if (c->busaddr == a) {
2522 removeQ(&h->cmpQ, c);
2523 if (c->cmd_type == CMD_RWREQ) {
2524 complete_command(h, c, 0);
2525 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2526 complete(c->waiting);
2528 # ifdef CONFIG_CISS_SCSI_TAPE
2529 else if (c->cmd_type == CMD_SCSI)
2530 complete_scsi_command(c, 0, a1);
2537 /* check to see if we have maxed out the number of commands that can
2538 * be placed on the queue. If so then exit. We do this check here
2539 * in case the interrupt we serviced was from an ioctl and did not
2540 * free any new commands.
2542 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2545 /* We have room on the queue for more commands. Now we need to queue
2546 * them up. We will also keep track of the next queue to run so
2547 * that every queue gets a chance to be started first.
2549 for (j=0; j < h->highest_lun + 1; j++){
2550 int curr_queue = (start_queue + j) % (h->highest_lun + 1);
2551 /* make sure the disk has been added and the drive is real
2552 * because this can be called from the middle of init_one.
2554 if(!(h->drv[curr_queue].queue) ||
2555 !(h->drv[curr_queue].heads))
2557 blk_start_queue(h->gendisk[curr_queue]->queue);
2559 /* check to see if we have maxed out the number of commands
2560 * that can be placed on the queue.
2562 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2564 if (curr_queue == start_queue){
2565 h->next_to_run = (start_queue + 1) % (h->highest_lun + 1);
2568 h->next_to_run = curr_queue;
2572 curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
2577 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2581 * We cannot read the structure directly, for portablity we must use
2583 * This is for debug only.
2586 static void print_cfg_table( CfgTable_struct *tb)
2591 printk("Controller Configuration information\n");
2592 printk("------------------------------------\n");
2594 temp_name[i] = readb(&(tb->Signature[i]));
2596 printk(" Signature = %s\n", temp_name);
2597 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2598 printk(" Transport methods supported = 0x%x\n",
2599 readl(&(tb-> TransportSupport)));
2600 printk(" Transport methods active = 0x%x\n",
2601 readl(&(tb->TransportActive)));
2602 printk(" Requested transport Method = 0x%x\n",
2603 readl(&(tb->HostWrite.TransportRequest)));
2604 printk(" Coalese Interrupt Delay = 0x%x\n",
2605 readl(&(tb->HostWrite.CoalIntDelay)));
2606 printk(" Coalese Interrupt Count = 0x%x\n",
2607 readl(&(tb->HostWrite.CoalIntCount)));
2608 printk(" Max outstanding commands = 0x%d\n",
2609 readl(&(tb->CmdsOutMax)));
2610 printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2612 temp_name[i] = readb(&(tb->ServerName[i]));
2613 temp_name[16] = '\0';
2614 printk(" Server Name = %s\n", temp_name);
2615 printk(" Heartbeat Counter = 0x%x\n\n\n",
2616 readl(&(tb->HeartBeat)));
2618 #endif /* CCISS_DEBUG */
2620 static void release_io_mem(ctlr_info_t *c)
2622 /* if IO mem was not protected do nothing */
2623 if( c->io_mem_addr == 0)
2625 release_region(c->io_mem_addr, c->io_mem_length);
2627 c->io_mem_length = 0;
2630 static int find_PCI_BAR_index(struct pci_dev *pdev,
2631 unsigned long pci_bar_addr)
2633 int i, offset, mem_type, bar_type;
2634 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2637 for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2638 bar_type = pci_resource_flags(pdev, i) &
2639 PCI_BASE_ADDRESS_SPACE;
2640 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2643 mem_type = pci_resource_flags(pdev, i) &
2644 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2646 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2647 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2648 offset += 4; /* 32 bit */
2650 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2653 default: /* reserved in PCI 2.2 */
2654 printk(KERN_WARNING "Base address is invalid\n");
2659 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2665 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
2666 * controllers that are capable. If not, we use IO-APIC mode.
2669 static void __devinit cciss_interrupt_mode(ctlr_info_t *c, struct pci_dev *pdev, __u32 board_id)
2671 #ifdef CONFIG_PCI_MSI
2673 struct msix_entry cciss_msix_entries[4] = {{0,0}, {0,1},
2676 /* Some boards advertise MSI but don't really support it */
2677 if ((board_id == 0x40700E11) ||
2678 (board_id == 0x40800E11) ||
2679 (board_id == 0x40820E11) ||
2680 (board_id == 0x40830E11))
2681 goto default_int_mode;
2683 if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) {
2684 err = pci_enable_msix(pdev, cciss_msix_entries, 4);
2686 c->intr[0] = cciss_msix_entries[0].vector;
2687 c->intr[1] = cciss_msix_entries[1].vector;
2688 c->intr[2] = cciss_msix_entries[2].vector;
2689 c->intr[3] = cciss_msix_entries[3].vector;
2694 printk(KERN_WARNING "cciss: only %d MSI-X vectors "
2695 "available\n", err);
2697 printk(KERN_WARNING "cciss: MSI-X init failed %d\n",
2701 if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) {
2702 if (!pci_enable_msi(pdev)) {
2703 c->intr[SIMPLE_MODE_INT] = pdev->irq;
2707 printk(KERN_WARNING "cciss: MSI init failed\n");
2708 c->intr[SIMPLE_MODE_INT] = pdev->irq;
2712 #endif /* CONFIG_PCI_MSI */
2713 /* if we get here we're going to use the default interrupt mode */
2715 c->intr[SIMPLE_MODE_INT] = pdev->irq;
2719 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2721 ushort subsystem_vendor_id, subsystem_device_id, command;
2722 __u32 board_id, scratchpad = 0;
2724 __u32 cfg_base_addr;
2725 __u64 cfg_base_addr_index;
2728 /* check to see if controller has been disabled */
2729 /* BEFORE trying to enable it */
2730 (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2731 if(!(command & 0x02))
2733 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2737 if (pci_enable_device(pdev))
2739 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2743 subsystem_vendor_id = pdev->subsystem_vendor;
2744 subsystem_device_id = pdev->subsystem_device;
2745 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2746 subsystem_vendor_id);
2748 /* search for our IO range so we can protect it */
2749 for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2751 /* is this an IO range */
2752 if( pci_resource_flags(pdev, i) & 0x01 ) {
2753 c->io_mem_addr = pci_resource_start(pdev, i);
2754 c->io_mem_length = pci_resource_end(pdev, i) -
2755 pci_resource_start(pdev, i) +1;
2757 printk("IO value found base_addr[%d] %lx %lx\n", i,
2758 c->io_mem_addr, c->io_mem_length);
2759 #endif /* CCISS_DEBUG */
2760 /* register the IO range */
2761 if(!request_region( c->io_mem_addr,
2762 c->io_mem_length, "cciss"))
2764 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2765 c->io_mem_addr, c->io_mem_length);
2767 c->io_mem_length = 0;
2774 printk("command = %x\n", command);
2775 printk("irq = %x\n", pdev->irq);
2776 printk("board_id = %x\n", board_id);
2777 #endif /* CCISS_DEBUG */
2779 /* If the kernel supports MSI/MSI-X we will try to enable that functionality,
2780 * else we use the IO-APIC interrupt assigned to us by system ROM.
2782 cciss_interrupt_mode(c, pdev, board_id);
2785 * Memory base addr is first addr , the second points to the config
2789 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2791 printk("address 0 = %x\n", c->paddr);
2792 #endif /* CCISS_DEBUG */
2793 c->vaddr = remap_pci_mem(c->paddr, 200);
2795 /* Wait for the board to become ready. (PCI hotplug needs this.)
2796 * We poll for up to 120 secs, once per 100ms. */
2797 for (i=0; i < 1200; i++) {
2798 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2799 if (scratchpad == CCISS_FIRMWARE_READY)
2801 set_current_state(TASK_INTERRUPTIBLE);
2802 schedule_timeout(HZ / 10); /* wait 100ms */
2804 if (scratchpad != CCISS_FIRMWARE_READY) {
2805 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2809 /* get the address index number */
2810 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2811 cfg_base_addr &= (__u32) 0x0000ffff;
2813 printk("cfg base address = %x\n", cfg_base_addr);
2814 #endif /* CCISS_DEBUG */
2815 cfg_base_addr_index =
2816 find_PCI_BAR_index(pdev, cfg_base_addr);
2818 printk("cfg base address index = %x\n", cfg_base_addr_index);
2819 #endif /* CCISS_DEBUG */
2820 if (cfg_base_addr_index == -1) {
2821 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2826 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2828 printk("cfg offset = %x\n", cfg_offset);
2829 #endif /* CCISS_DEBUG */
2830 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
2831 cfg_base_addr_index) + cfg_offset,
2832 sizeof(CfgTable_struct));
2833 c->board_id = board_id;
2836 print_cfg_table(c->cfgtable);
2837 #endif /* CCISS_DEBUG */
2839 for(i=0; i<NR_PRODUCTS; i++) {
2840 if (board_id == products[i].board_id) {
2841 c->product_name = products[i].product_name;
2842 c->access = *(products[i].access);
2846 if (i == NR_PRODUCTS) {
2847 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2848 " to access the Smart Array controller %08lx\n",
2849 (unsigned long)board_id);
2852 if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
2853 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2854 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2855 (readb(&c->cfgtable->Signature[3]) != 'S') )
2857 printk("Does not appear to be a valid CISS config table\n");
2863 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2865 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2867 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2872 printk("Trying to put board into Simple mode\n");
2873 #endif /* CCISS_DEBUG */
2874 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2875 /* Update the field, and then ring the doorbell */
2876 writel( CFGTBL_Trans_Simple,
2877 &(c->cfgtable->HostWrite.TransportRequest));
2878 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2880 /* under certain very rare conditions, this can take awhile.
2881 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2882 * as we enter this code.) */
2883 for(i=0;i<MAX_CONFIG_WAIT;i++) {
2884 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2886 /* delay and try again */
2887 set_current_state(TASK_INTERRUPTIBLE);
2888 schedule_timeout(10);
2892 printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2893 #endif /* CCISS_DEBUG */
2895 print_cfg_table(c->cfgtable);
2896 #endif /* CCISS_DEBUG */
2898 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2900 printk(KERN_WARNING "cciss: unable to get board into"
2909 * Gets information about the local volumes attached to the controller.
2911 static void cciss_getgeometry(int cntl_num)
2913 ReportLunData_struct *ld_buff;
2914 ReadCapdata_struct *size_buff;
2915 InquiryData_struct *inq_buff;
2923 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2924 if (ld_buff == NULL)
2926 printk(KERN_ERR "cciss: out of memory\n");
2929 memset(ld_buff, 0, sizeof(ReportLunData_struct));
2930 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2931 if (size_buff == NULL)
2933 printk(KERN_ERR "cciss: out of memory\n");
2937 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2938 if (inq_buff == NULL)
2940 printk(KERN_ERR "cciss: out of memory\n");
2945 /* Get the firmware version */
2946 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2947 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2948 if (return_code == IO_OK)
2950 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2951 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2952 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2953 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2954 } else /* send command failed */
2956 printk(KERN_WARNING "cciss: unable to determine firmware"
2957 " version of controller\n");
2959 /* Get the number of logical volumes */
2960 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2961 sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2963 if( return_code == IO_OK)
2966 printk("LUN Data\n--------------------------\n");
2967 #endif /* CCISS_DEBUG */
2969 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2970 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2971 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
2972 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2973 } else /* reading number of logical volumes failed */
2975 printk(KERN_WARNING "cciss: report logical volume"
2976 " command failed\n");
2979 hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2980 if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2982 printk(KERN_ERR "ciss: only %d number of logical volumes supported\n",
2984 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2987 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2988 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2989 ld_buff->LUNListLength[3], hba[cntl_num]->num_luns);
2990 #endif /* CCISS_DEBUG */
2992 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
2993 // for(i=0; i< hba[cntl_num]->num_luns; i++)
2994 for(i=0; i < CISS_MAX_LUN; i++)
2996 if (i < hba[cntl_num]->num_luns){
2997 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3]))
2999 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2]))
3001 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1]))
3003 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
3005 hba[cntl_num]->drv[i].LunID = lunid;
3009 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
3010 ld_buff->LUN[i][0], ld_buff->LUN[i][1],
3011 ld_buff->LUN[i][2], ld_buff->LUN[i][3],
3012 hba[cntl_num]->drv[i].LunID);
3013 #endif /* CCISS_DEBUG */
3014 cciss_read_capacity(cntl_num, i, size_buff, 0,
3015 &total_size, &block_size);
3016 cciss_geometry_inquiry(cntl_num, i, 0, total_size,
3017 block_size, inq_buff, &hba[cntl_num]->drv[i]);
3019 /* initialize raid_level to indicate a free space */
3020 hba[cntl_num]->drv[i].raid_level = -1;
3028 /* Function to find the first free pointer into our hba[] array */
3029 /* Returns -1 if no free entries are left. */
3030 static int alloc_cciss_hba(void)
3032 struct gendisk *disk[NWD];
3034 for (n = 0; n < NWD; n++) {
3035 disk[n] = alloc_disk(1 << NWD_SHIFT);
3040 for(i=0; i< MAX_CTLR; i++) {
3043 p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
3046 memset(p, 0, sizeof(ctlr_info_t));
3047 for (n = 0; n < NWD; n++)
3048 p->gendisk[n] = disk[n];
3053 printk(KERN_WARNING "cciss: This driver supports a maximum"
3054 " of %d controllers.\n", MAX_CTLR);
3057 printk(KERN_ERR "cciss: out of memory.\n");
3064 static void free_hba(int i)
3066 ctlr_info_t *p = hba[i];
3070 for (n = 0; n < NWD; n++)
3071 put_disk(p->gendisk[n]);
3076 * This is it. Find all the controllers and register them. I really hate
3077 * stealing all these major device numbers.
3078 * returns the number of block devices registered.
3080 static int __devinit cciss_init_one(struct pci_dev *pdev,
3081 const struct pci_device_id *ent)
3088 printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
3089 " bus %d dev %d func %d\n",
3090 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
3091 PCI_FUNC(pdev->devfn));
3092 i = alloc_cciss_hba();
3096 hba[i]->busy_initializing = 1;
3098 if (cciss_pci_init(hba[i], pdev) != 0)
3101 sprintf(hba[i]->devname, "cciss%d", i);
3103 hba[i]->pdev = pdev;
3105 /* configure PCI DMA stuff */
3106 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
3107 printk("cciss: using DAC cycles\n");
3108 else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
3109 printk("cciss: not using DAC cycles\n");
3111 printk("cciss: no suitable DMA available\n");
3116 * register with the major number, or get a dynamic major number
3117 * by passing 0 as argument. This is done for greater than
3118 * 8 controller support.
3120 if (i < MAX_CTLR_ORIG)
3121 hba[i]->major = MAJOR_NR + i;
3122 rc = register_blkdev(hba[i]->major, hba[i]->devname);
3123 if(rc == -EBUSY || rc == -EINVAL) {
3125 "cciss: Unable to get major number %d for %s "
3126 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
3130 if (i >= MAX_CTLR_ORIG)
3134 /* make sure the board interrupts are off */
3135 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
3136 if( request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr,
3137 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
3138 hba[i]->devname, hba[i])) {
3139 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
3140 hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname);
3143 hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
3144 hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
3145 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
3146 &(hba[i]->cmd_pool_dhandle));
3147 hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
3148 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
3149 &(hba[i]->errinfo_pool_dhandle));
3150 if((hba[i]->cmd_pool_bits == NULL)
3151 || (hba[i]->cmd_pool == NULL)
3152 || (hba[i]->errinfo_pool == NULL)) {
3153 printk( KERN_ERR "cciss: out of memory");
3156 #ifdef CONFIG_CISS_SCSI_TAPE
3157 hba[i]->scsi_rejects.complete =
3158 kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) *
3159 (NR_CMDS + 5), GFP_KERNEL);
3160 if (hba[i]->scsi_rejects.complete == NULL) {
3161 printk( KERN_ERR "cciss: out of memory");
3165 spin_lock_init(&hba[i]->lock);
3167 /* Initialize the pdev driver private data.
3168 have it point to hba[i]. */
3169 pci_set_drvdata(pdev, hba[i]);
3170 /* command and error info recs zeroed out before
3172 memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
3175 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
3176 #endif /* CCISS_DEBUG */
3178 cciss_getgeometry(i);
3180 cciss_scsi_setup(i);
3182 /* Turn the interrupts on so we can service requests */
3183 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
3186 hba[i]->busy_initializing = 0;
3188 for(j=0; j < NWD; j++) { /* mfm */
3189 drive_info_struct *drv = &(hba[i]->drv[j]);
3190 struct gendisk *disk = hba[i]->gendisk[j];
3192 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
3195 "cciss: unable to allocate queue for disk %d\n",
3201 q->backing_dev_info.ra_pages = READ_AHEAD;
3202 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
3204 /* This is a hardware imposed limit. */
3205 blk_queue_max_hw_segments(q, MAXSGENTRIES);
3207 /* This is a limit in the driver and could be eliminated. */
3208 blk_queue_max_phys_segments(q, MAXSGENTRIES);
3210 blk_queue_max_sectors(q, 512);
3212 q->queuedata = hba[i];
3213 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
3214 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
3215 disk->major = hba[i]->major;
3216 disk->first_minor = j << NWD_SHIFT;
3217 disk->fops = &cciss_fops;
3219 disk->private_data = drv;
3220 /* we must register the controller even if no disks exist */
3221 /* this is for the online array utilities */
3222 if(!drv->heads && j)
3224 blk_queue_hardsect_size(q, drv->block_size);
3225 set_capacity(disk, drv->nr_blocks);
3232 #ifdef CONFIG_CISS_SCSI_TAPE
3233 if(hba[i]->scsi_rejects.complete)
3234 kfree(hba[i]->scsi_rejects.complete);
3236 kfree(hba[i]->cmd_pool_bits);
3237 if(hba[i]->cmd_pool)
3238 pci_free_consistent(hba[i]->pdev,
3239 NR_CMDS * sizeof(CommandList_struct),
3240 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3241 if(hba[i]->errinfo_pool)
3242 pci_free_consistent(hba[i]->pdev,
3243 NR_CMDS * sizeof( ErrorInfo_struct),
3244 hba[i]->errinfo_pool,
3245 hba[i]->errinfo_pool_dhandle);
3246 free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]);
3248 unregister_blkdev(hba[i]->major, hba[i]->devname);
3250 release_io_mem(hba[i]);
3252 hba[i]->busy_initializing = 0;
3256 static void __devexit cciss_remove_one (struct pci_dev *pdev)
3258 ctlr_info_t *tmp_ptr;
3263 if (pci_get_drvdata(pdev) == NULL)
3265 printk( KERN_ERR "cciss: Unable to remove device \n");
3268 tmp_ptr = pci_get_drvdata(pdev);
3272 printk(KERN_ERR "cciss: device appears to "
3273 "already be removed \n");
3276 /* Turn board interrupts off and send the flush cache command */
3277 /* sendcmd will turn off interrupt, and send the flush...
3278 * To write all data in the battery backed cache to disks */
3279 memset(flush_buf, 0, 4);
3280 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
3282 if(return_code != IO_OK)
3284 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
3287 free_irq(hba[i]->intr[2], hba[i]);
3289 #ifdef CONFIG_PCI_MSI
3290 if (hba[i]->msix_vector)
3291 pci_disable_msix(hba[i]->pdev);
3292 else if (hba[i]->msi_vector)
3293 pci_disable_msi(hba[i]->pdev);
3294 #endif /* CONFIG_PCI_MSI */
3296 pci_set_drvdata(pdev, NULL);
3297 iounmap(hba[i]->vaddr);
3298 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
3299 unregister_blkdev(hba[i]->major, hba[i]->devname);
3300 remove_proc_entry(hba[i]->devname, proc_cciss);
3302 /* remove it from the disk list */
3303 for (j = 0; j < NWD; j++) {
3304 struct gendisk *disk = hba[i]->gendisk[j];
3306 request_queue_t *q = disk->queue;
3308 if (disk->flags & GENHD_FL_UP)
3311 blk_cleanup_queue(q);
3315 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
3316 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3317 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
3318 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
3319 kfree(hba[i]->cmd_pool_bits);
3320 #ifdef CONFIG_CISS_SCSI_TAPE
3321 kfree(hba[i]->scsi_rejects.complete);
3323 release_io_mem(hba[i]);
3327 static struct pci_driver cciss_pci_driver = {
3329 .probe = cciss_init_one,
3330 .remove = __devexit_p(cciss_remove_one),
3331 .id_table = cciss_pci_device_id, /* id_table */
3335 * This is it. Register the PCI driver information for the cards we control
3336 * the OS will call our registered routines when it finds one of our cards.
3338 static int __init cciss_init(void)
3340 printk(KERN_INFO DRIVER_NAME "\n");
3342 /* Register for our PCI devices */
3343 return pci_module_init(&cciss_pci_driver);
3346 static void __exit cciss_cleanup(void)
3350 pci_unregister_driver(&cciss_pci_driver);
3351 /* double check that all controller entrys have been removed */
3352 for (i=0; i< MAX_CTLR; i++)
3356 printk(KERN_WARNING "cciss: had to remove"
3357 " controller %d\n", i);
3358 cciss_remove_one(hba[i]->pdev);
3361 remove_proc_entry("cciss", proc_root_driver);
3364 static void fail_all_cmds(unsigned long ctlr)
3366 /* If we get here, the board is apparently dead. */
3367 ctlr_info_t *h = hba[ctlr];
3368 CommandList_struct *c;
3369 unsigned long flags;
3371 printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr);
3372 h->alive = 0; /* the controller apparently died... */
3374 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
3376 pci_disable_device(h->pdev); /* Make sure it is really dead. */
3378 /* move everything off the request queue onto the completed queue */
3379 while( (c = h->reqQ) != NULL ) {
3380 removeQ(&(h->reqQ), c);
3382 addQ (&(h->cmpQ), c);
3385 /* Now, fail everything on the completed queue with a HW error */
3386 while( (c = h->cmpQ) != NULL ) {
3387 removeQ(&h->cmpQ, c);
3388 c->err_info->CommandStatus = CMD_HARDWARE_ERR;
3389 if (c->cmd_type == CMD_RWREQ) {
3390 complete_command(h, c, 0);
3391 } else if (c->cmd_type == CMD_IOCTL_PEND)
3392 complete(c->waiting);
3393 #ifdef CONFIG_CISS_SCSI_TAPE
3394 else if (c->cmd_type == CMD_SCSI)
3395 complete_scsi_command(c, 0, 0);
3398 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
3402 module_init(cciss_init);
3403 module_exit(cciss_cleanup);