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[PATCH] cciss: bug fix in cciss_remove_one
[deliverable/linux.git] / drivers / block / cciss.c
CommitLineData
1da177e4
LT		 1/*
2 * Disk Array driver for HP SA 5xxx and 6xxx Controllers
3de0a70b 3 * Copyright 2000, 2005 Hewlett-Packard Development Company, L.P.
1da177e4
LT		 4 *
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.
9 *
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.
14 *
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.
18 *
19 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
20 *
21 */
22
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>
32#include <linux/fs.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>
42#include <asm/io.h>
43
eb0df996 44#include <linux/dma-mapping.h>
1da177e4
LT		 45#include <linux/blkdev.h>
46#include <linux/genhd.h>
47#include <linux/completion.h>
48
49#define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
9dc7a86e
MM		 50#define DRIVER_NAME "HP CISS Driver (v 2.6.8)"
51#define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,8)
1da177e4
LT		 52
53/* Embedded module documentation macros - see modules.h */
54MODULE_AUTHOR("Hewlett-Packard Company");
9dc7a86e 55MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.8");
1da177e4 56MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
9dc7a86e 57 " SA6i P600 P800 P400 P400i E200 E200i");
1da177e4
LT		 58MODULE_LICENSE("GPL");
59
60#include "cciss_cmd.h"
61#include "cciss.h"
62#include <linux/cciss_ioctl.h>
63
64/* define the PCI info for the cards we can control */
65static 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},
9dc7a86e 86 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
1da177e4 87 0x103c, 0x3223, 0, 0, 0},
3de0a70b 88 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
9dc7a86e 89 0x103c, 0x3234, 0, 0, 0},
3de0a70b 90 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
9dc7a86e
MM		 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},
1da177e4
LT		 102 {0,}
103};
104MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
105
106#define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
107
108/* board_id = Subsystem Device ID & Vendor ID
109 * product = Marketing Name for the board
110 * access = Address of the struct of function pointers
111 */
112static 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},
9dc7a86e
MM		 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},
1da177e4
LT		 131};
132
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
136
137/*define how many times we will try a command because of bus resets */
138#define MAX_CMD_RETRIES 3
139
140#define READ_AHEAD 1024
141#define NR_CMDS 384 /* #commands that can be outstanding */
142#define MAX_CTLR 32
143
144/* Originally cciss driver only supports 8 major numbers */
145#define MAX_CTLR_ORIG 8
146
147
1da177e4
LT		 148static ctlr_info_t *hba[MAX_CTLR];
149
150static void do_cciss_request(request_queue_t *q);
151static int cciss_open(struct inode *inode, struct file *filep);
152static int cciss_release(struct inode *inode, struct file *filep);
153static int cciss_ioctl(struct inode *inode, struct file *filep,
154 unsigned int cmd, unsigned long arg);
155
156static int revalidate_allvol(ctlr_info_t *host);
157static int cciss_revalidate(struct gendisk *disk);
ddd47442
MM		 158static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk);
159static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, int clear_all);
1da177e4 160
ddd47442
MM		 161static void cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
162 int withirq, unsigned int *total_size, unsigned int *block_size);
163static void cciss_geometry_inquiry(int ctlr, int logvol,
164 int withirq, unsigned int total_size,
165 unsigned int block_size, InquiryData_struct *inq_buff,
166 drive_info_struct *drv);
1da177e4
LT		 167static void cciss_getgeometry(int cntl_num);
168
169static void start_io( ctlr_info_t *h);
170static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
171 unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
172 unsigned char *scsi3addr, int cmd_type);
ddd47442
MM		 173static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
174 unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
175 int cmd_type);
1da177e4 176
33079b21
MM		 177static void fail_all_cmds(unsigned long ctlr);
178
1da177e4
LT		 179#ifdef CONFIG_PROC_FS
180static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
181 int length, int *eof, void *data);
182static void cciss_procinit(int i);
183#else
184static void cciss_procinit(int i) {}
185#endif /* CONFIG_PROC_FS */
186
187#ifdef CONFIG_COMPAT
188static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
189#endif
190
191static struct block_device_operations cciss_fops = {
192 .owner = THIS_MODULE,
193 .open = cciss_open,
194 .release = cciss_release,
195 .ioctl = cciss_ioctl,
196#ifdef CONFIG_COMPAT
197 .compat_ioctl = cciss_compat_ioctl,
198#endif
199 .revalidate_disk= cciss_revalidate,
200};
201
202/*
203 * Enqueuing and dequeuing functions for cmdlists.
204 */
205static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
206{
207 if (*Qptr == NULL) {
208 *Qptr = c;
209 c->next = c->prev = c;
210 } else {
211 c->prev = (*Qptr)->prev;
212 c->next = (*Qptr);
213 (*Qptr)->prev->next = c;
214 (*Qptr)->prev = c;
215 }
216}
217
218static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
219 CommandList_struct *c)
220{
221 if (c && c->next != c) {
222 if (*Qptr == c) *Qptr = c->next;
223 c->prev->next = c->next;
224 c->next->prev = c->prev;
225 } else {
226 *Qptr = NULL;
227 }
228 return c;
229}
230
231#include "cciss_scsi.c" /* For SCSI tape support */
232
233#ifdef CONFIG_PROC_FS
234
235/*
236 * Report information about this controller.
237 */
238#define ENG_GIG 1000000000
239#define ENG_GIG_FACTOR (ENG_GIG/512)
240#define RAID_UNKNOWN 6
241static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
242 "UNKNOWN"};
243
244static struct proc_dir_entry *proc_cciss;
245
246static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
247 int length, int *eof, void *data)
248{
249 off_t pos = 0;
250 off_t len = 0;
251 int size, i, ctlr;
252 ctlr_info_t *h = (ctlr_info_t*)data;
253 drive_info_struct *drv;
254 unsigned long flags;
255 sector_t vol_sz, vol_sz_frac;
256
257 ctlr = h->ctlr;
258
259 /* prevent displaying bogus info during configuration
260 * or deconfiguration of a logical volume
261 */
262 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
263 if (h->busy_configuring) {
264 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
265 return -EBUSY;
266 }
267 h->busy_configuring = 1;
268 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
269
270 size = sprintf(buffer, "%s: HP %s Controller\n"
271 "Board ID: 0x%08lx\n"
272 "Firmware Version: %c%c%c%c\n"
273 "IRQ: %d\n"
274 "Logical drives: %d\n"
275 "Current Q depth: %d\n"
276 "Current # commands on controller: %d\n"
277 "Max Q depth since init: %d\n"
278 "Max # commands on controller since init: %d\n"
279 "Max SG entries since init: %d\n\n",
280 h->devname,
281 h->product_name,
282 (unsigned long)h->board_id,
283 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
284 (unsigned int)h->intr,
285 h->num_luns,
286 h->Qdepth, h->commands_outstanding,
287 h->maxQsinceinit, h->max_outstanding, h->maxSG);
288
289 pos += size; len += size;
290 cciss_proc_tape_report(ctlr, buffer, &pos, &len);
291 for(i=0; i<=h->highest_lun; i++) {
292
293 drv = &h->drv[i];
ddd47442 294 if (drv->heads == 0)
1da177e4
LT		 295 continue;
296
297 vol_sz = drv->nr_blocks;
298 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
299 vol_sz_frac *= 100;
300 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
301
302 if (drv->raid_level > 5)
303 drv->raid_level = RAID_UNKNOWN;
304 size = sprintf(buffer+len, "cciss/c%dd%d:"
305 "\t%4u.%02uGB\tRAID %s\n",
306 ctlr, i, (int)vol_sz, (int)vol_sz_frac,
307 raid_label[drv->raid_level]);
308 pos += size; len += size;
309 }
310
311 *eof = 1;
312 *start = buffer+offset;
313 len -= offset;
314 if (len>length)
315 len = length;
316 h->busy_configuring = 0;
317 return len;
318}
319
320static int
321cciss_proc_write(struct file *file, const char __user *buffer,
322 unsigned long count, void *data)
323{
324 unsigned char cmd[80];
325 int len;
326#ifdef CONFIG_CISS_SCSI_TAPE
327 ctlr_info_t *h = (ctlr_info_t *) data;
328 int rc;
329#endif
330
331 if (count > sizeof(cmd)-1) return -EINVAL;
332 if (copy_from_user(cmd, buffer, count)) return -EFAULT;
333 cmd[count] = '\0';
334 len = strlen(cmd); // above 3 lines ensure safety
335 if (len && cmd[len-1] == '\n')
336 cmd[--len] = '\0';
337# ifdef CONFIG_CISS_SCSI_TAPE
338 if (strcmp("engage scsi", cmd)==0) {
339 rc = cciss_engage_scsi(h->ctlr);
340 if (rc != 0) return -rc;
341 return count;
342 }
343 /* might be nice to have "disengage" too, but it's not
344 safely possible. (only 1 module use count, lock issues.) */
345# endif
346 return -EINVAL;
347}
348
349/*
350 * Get us a file in /proc/cciss that says something about each controller.
351 * Create /proc/cciss if it doesn't exist yet.
352 */
353static void __devinit cciss_procinit(int i)
354{
355 struct proc_dir_entry *pde;
356
357 if (proc_cciss == NULL) {
358 proc_cciss = proc_mkdir("cciss", proc_root_driver);
359 if (!proc_cciss)
360 return;
361 }
362
363 pde = create_proc_read_entry(hba[i]->devname,
364 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
365 proc_cciss, cciss_proc_get_info, hba[i]);
366 pde->write_proc = cciss_proc_write;
367}
368#endif /* CONFIG_PROC_FS */
369
370/*
371 * For operations that cannot sleep, a command block is allocated at init,
372 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
373 * which ones are free or in use. For operations that can wait for kmalloc
374 * to possible sleep, this routine can be called with get_from_pool set to 0.
375 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
376 */
377static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
378{
379 CommandList_struct *c;
380 int i;
381 u64bit temp64;
382 dma_addr_t cmd_dma_handle, err_dma_handle;
383
384 if (!get_from_pool)
385 {
386 c = (CommandList_struct *) pci_alloc_consistent(
387 h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
388 if(c==NULL)
389 return NULL;
390 memset(c, 0, sizeof(CommandList_struct));
391
33079b21
MM		 392 c->cmdindex = -1;
393
1da177e4
LT		 394 c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
395 h->pdev, sizeof(ErrorInfo_struct),
396 &err_dma_handle);
397
398 if (c->err_info == NULL)
399 {
400 pci_free_consistent(h->pdev,
401 sizeof(CommandList_struct), c, cmd_dma_handle);
402 return NULL;
403 }
404 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
405 } else /* get it out of the controllers pool */
406 {
407 do {
408 i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
409 if (i == NR_CMDS)
410 return NULL;
411 } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
412#ifdef CCISS_DEBUG
413 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
414#endif
415 c = h->cmd_pool + i;
416 memset(c, 0, sizeof(CommandList_struct));
417 cmd_dma_handle = h->cmd_pool_dhandle
418 + i*sizeof(CommandList_struct);
419 c->err_info = h->errinfo_pool + i;
420 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
421 err_dma_handle = h->errinfo_pool_dhandle
422 + i*sizeof(ErrorInfo_struct);
423 h->nr_allocs++;
33079b21
MM		 424
425 c->cmdindex = i;
1da177e4
LT		 426 }
427
428 c->busaddr = (__u32) cmd_dma_handle;
429 temp64.val = (__u64) err_dma_handle;
430 c->ErrDesc.Addr.lower = temp64.val32.lower;
431 c->ErrDesc.Addr.upper = temp64.val32.upper;
432 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
433
434 c->ctlr = h->ctlr;
435 return c;
436
437
438}
439
440/*
441 * Frees a command block that was previously allocated with cmd_alloc().
442 */
443static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
444{
445 int i;
446 u64bit temp64;
447
448 if( !got_from_pool)
449 {
450 temp64.val32.lower = c->ErrDesc.Addr.lower;
451 temp64.val32.upper = c->ErrDesc.Addr.upper;
452 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
453 c->err_info, (dma_addr_t) temp64.val);
454 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
455 c, (dma_addr_t) c->busaddr);
456 } else
457 {
458 i = c - h->cmd_pool;
459 clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
460 h->nr_frees++;
461 }
462}
463
464static inline ctlr_info_t *get_host(struct gendisk *disk)
465{
466 return disk->queue->queuedata;
467}
468
469static inline drive_info_struct *get_drv(struct gendisk *disk)
470{
471 return disk->private_data;
472}
473
474/*
475 * Open. Make sure the device is really there.
476 */
477static int cciss_open(struct inode *inode, struct file *filep)
478{
479 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
480 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
481
482#ifdef CCISS_DEBUG
483 printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
484#endif /* CCISS_DEBUG */
485
1f8ef380
MM		 486 if (host->busy_initializing)
487 return -EBUSY;
488
ddd47442
MM		 489 if (host->busy_initializing || drv->busy_configuring)
490 return -EBUSY;
1da177e4
LT		 491 /*
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".
498 */
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) {
503 return -ENXIO;
504 /* if it is, make sure we have a LUN ID */
505 } else if (drv->LunID == 0) {
506 return -ENXIO;
507 }
508 }
509 if (!capable(CAP_SYS_ADMIN))
510 return -EPERM;
511 }
512 drv->usage_count++;
513 host->usage_count++;
514 return 0;
515}
516/*
517 * Close. Sync first.
518 */
519static int cciss_release(struct inode *inode, struct file *filep)
520{
521 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
522 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
523
524#ifdef CCISS_DEBUG
525 printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
526#endif /* CCISS_DEBUG */
527
528 drv->usage_count--;
529 host->usage_count--;
530 return 0;
531}
532
533#ifdef CONFIG_COMPAT
534
535static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
536{
537 int ret;
538 lock_kernel();
539 ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
540 unlock_kernel();
541 return ret;
542}
543
544static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
545static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
546
547static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
548{
549 switch (cmd) {
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:
562 case CCISS_REGNEWD:
563 case CCISS_RESCANDISK:
564 case CCISS_GETLUNINFO:
565 return do_ioctl(f, cmd, arg);
566
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);
571
572 default:
573 return -ENOIOCTLCMD;
574 }
575}
576
577static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
578{
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));
583 int err;
584 u32 cp;
585
586 err = 0;
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));
594
595 if (err)
596 return -EFAULT;
597
598 err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
599 if (err)
600 return err;
601 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
602 if (err)
603 return -EFAULT;
604 return err;
605}
606
607static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
608{
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));
613 int err;
614 u32 cp;
615
616 err = 0;
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));
625
626 if (err)
627 return -EFAULT;
628
629 err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
630 if (err)
631 return err;
632 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
633 if (err)
634 return -EFAULT;
635 return err;
636}
637#endif
638/*
639 * ioctl
640 */
641static int cciss_ioctl(struct inode *inode, struct file *filep,
642 unsigned int cmd, unsigned long arg)
643{
644 struct block_device *bdev = inode->i_bdev;
645 struct gendisk *disk = bdev->bd_disk;
646 ctlr_info_t *host = get_host(disk);
647 drive_info_struct *drv = get_drv(disk);
648 int ctlr = host->ctlr;
649 void __user *argp = (void __user *)arg;
650
651#ifdef CCISS_DEBUG
652 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
653#endif /* CCISS_DEBUG */
654
655 switch(cmd) {
656 case HDIO_GETGEO:
657 {
658 struct hd_geometry driver_geo;
659 if (drv->cylinders) {
660 driver_geo.heads = drv->heads;
661 driver_geo.sectors = drv->sectors;
662 driver_geo.cylinders = drv->cylinders;
663 } else
664 return -ENXIO;
665 driver_geo.start= get_start_sect(inode->i_bdev);
666 if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry)))
667 return -EFAULT;
668 return(0);
669 }
670
671 case CCISS_GETPCIINFO:
672 {
673 cciss_pci_info_struct pciinfo;
674
675 if (!arg) return -EINVAL;
cd6fb584 676 pciinfo.domain = pci_domain_nr(host->pdev->bus);
1da177e4
LT		 677 pciinfo.bus = host->pdev->bus->number;
678 pciinfo.dev_fn = host->pdev->devfn;
679 pciinfo.board_id = host->board_id;
680 if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct )))
681 return -EFAULT;
682 return(0);
683 }
684 case CCISS_GETINTINFO:
685 {
686 cciss_coalint_struct intinfo;
687 if (!arg) return -EINVAL;
688 intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
689 intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
690 if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
691 return -EFAULT;
692 return(0);
693 }
694 case CCISS_SETINTINFO:
695 {
696 cciss_coalint_struct intinfo;
697 unsigned long flags;
698 int i;
699
700 if (!arg) return -EINVAL;
701 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
702 if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
703 return -EFAULT;
704 if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
705
706 {
707// printk("cciss_ioctl: delay and count cannot be 0\n");
708 return( -EINVAL);
709 }
710 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
711 /* Update the field, and then ring the doorbell */
712 writel( intinfo.delay,
713 &(host->cfgtable->HostWrite.CoalIntDelay));
714 writel( intinfo.count,
715 &(host->cfgtable->HostWrite.CoalIntCount));
716 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
717
718 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
719 if (!(readl(host->vaddr + SA5_DOORBELL)
720 & CFGTBL_ChangeReq))
721 break;
722 /* delay and try again */
723 udelay(1000);
724 }
725 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
726 if (i >= MAX_IOCTL_CONFIG_WAIT)
727 return -EAGAIN;
728 return(0);
729 }
730 case CCISS_GETNODENAME:
731 {
732 NodeName_type NodeName;
733 int i;
734
735 if (!arg) return -EINVAL;
736 for(i=0;i<16;i++)
737 NodeName[i] = readb(&host->cfgtable->ServerName[i]);
738 if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
739 return -EFAULT;
740 return(0);
741 }
742 case CCISS_SETNODENAME:
743 {
744 NodeName_type NodeName;
745 unsigned long flags;
746 int i;
747
748 if (!arg) return -EINVAL;
749 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
750
751 if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
752 return -EFAULT;
753
754 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
755
756 /* Update the field, and then ring the doorbell */
757 for(i=0;i<16;i++)
758 writeb( NodeName[i], &host->cfgtable->ServerName[i]);
759
760 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
761
762 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
763 if (!(readl(host->vaddr + SA5_DOORBELL)
764 & CFGTBL_ChangeReq))
765 break;
766 /* delay and try again */
767 udelay(1000);
768 }
769 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
770 if (i >= MAX_IOCTL_CONFIG_WAIT)
771 return -EAGAIN;
772 return(0);
773 }
774
775 case CCISS_GETHEARTBEAT:
776 {
777 Heartbeat_type heartbeat;
778
779 if (!arg) return -EINVAL;
780 heartbeat = readl(&host->cfgtable->HeartBeat);
781 if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
782 return -EFAULT;
783 return(0);
784 }
785 case CCISS_GETBUSTYPES:
786 {
787 BusTypes_type BusTypes;
788
789 if (!arg) return -EINVAL;
790 BusTypes = readl(&host->cfgtable->BusTypes);
791 if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
792 return -EFAULT;
793 return(0);
794 }
795 case CCISS_GETFIRMVER:
796 {
797 FirmwareVer_type firmware;
798
799 if (!arg) return -EINVAL;
800 memcpy(firmware, host->firm_ver, 4);
801
802 if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
803 return -EFAULT;
804 return(0);
805 }
806 case CCISS_GETDRIVVER:
807 {
808 DriverVer_type DriverVer = DRIVER_VERSION;
809
810 if (!arg) return -EINVAL;
811
812 if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
813 return -EFAULT;
814 return(0);
815 }
816
817 case CCISS_REVALIDVOLS:
818 if (bdev != bdev->bd_contains || drv != host->drv)
819 return -ENXIO;
820 return revalidate_allvol(host);
821
822 case CCISS_GETLUNINFO: {
823 LogvolInfo_struct luninfo;
1da177e4
LT		 824
825 luninfo.LunID = drv->LunID;
826 luninfo.num_opens = drv->usage_count;
827 luninfo.num_parts = 0;
1da177e4
LT		 828 if (copy_to_user(argp, &luninfo,
829 sizeof(LogvolInfo_struct)))
830 return -EFAULT;
831 return(0);
832 }
833 case CCISS_DEREGDISK:
ddd47442 834 return rebuild_lun_table(host, disk);
1da177e4
LT		 835
836 case CCISS_REGNEWD:
ddd47442 837 return rebuild_lun_table(host, NULL);
1da177e4
LT		 838
839 case CCISS_PASSTHRU:
840 {
841 IOCTL_Command_struct iocommand;
842 CommandList_struct *c;
843 char *buff = NULL;
844 u64bit temp64;
845 unsigned long flags;
846 DECLARE_COMPLETION(wait);
847
848 if (!arg) return -EINVAL;
849
850 if (!capable(CAP_SYS_RAWIO)) return -EPERM;
851
852 if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
853 return -EFAULT;
854 if((iocommand.buf_size < 1) &&
855 (iocommand.Request.Type.Direction != XFER_NONE))
856 {
857 return -EINVAL;
858 }
859#if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
860 /* Check kmalloc limits */
861 if(iocommand.buf_size > 128000)
862 return -EINVAL;
863#endif
864 if(iocommand.buf_size > 0)
865 {
866 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
867 if( buff == NULL)
868 return -EFAULT;
869 }
870 if (iocommand.Request.Type.Direction == XFER_WRITE)
871 {
872 /* Copy the data into the buffer we created */
873 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
874 {
875 kfree(buff);
876 return -EFAULT;
877 }
878 } else {
879 memset(buff, 0, iocommand.buf_size);
880 }
881 if ((c = cmd_alloc(host , 0)) == NULL)
882 {
883 kfree(buff);
884 return -ENOMEM;
885 }
886 // Fill in the command type
887 c->cmd_type = CMD_IOCTL_PEND;
888 // Fill in Command Header
889 c->Header.ReplyQueue = 0; // unused in simple mode
890 if( iocommand.buf_size > 0) // buffer to fill
891 {
892 c->Header.SGList = 1;
893 c->Header.SGTotal= 1;
894 } else // no buffers to fill
895 {
896 c->Header.SGList = 0;
897 c->Header.SGTotal= 0;
898 }
899 c->Header.LUN = iocommand.LUN_info;
900 c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
901
902 // Fill in Request block
903 c->Request = iocommand.Request;
904
905 // Fill in the scatter gather information
906 if (iocommand.buf_size > 0 )
907 {
908 temp64.val = pci_map_single( host->pdev, buff,
909 iocommand.buf_size,
910 PCI_DMA_BIDIRECTIONAL);
911 c->SG[0].Addr.lower = temp64.val32.lower;
912 c->SG[0].Addr.upper = temp64.val32.upper;
913 c->SG[0].Len = iocommand.buf_size;
914 c->SG[0].Ext = 0; // we are not chaining
915 }
916 c->waiting = &wait;
917
918 /* Put the request on the tail of the request queue */
919 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
920 addQ(&host->reqQ, c);
921 host->Qdepth++;
922 start_io(host);
923 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
924
925 wait_for_completion(&wait);
926
927 /* unlock the buffers from DMA */
928 temp64.val32.lower = c->SG[0].Addr.lower;
929 temp64.val32.upper = c->SG[0].Addr.upper;
930 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
931 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
932
933 /* Copy the error information out */
934 iocommand.error_info = *(c->err_info);
935 if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
936 {
937 kfree(buff);
938 cmd_free(host, c, 0);
939 return( -EFAULT);
940 }
941
942 if (iocommand.Request.Type.Direction == XFER_READ)
943 {
944 /* Copy the data out of the buffer we created */
945 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
946 {
947 kfree(buff);
948 cmd_free(host, c, 0);
949 return -EFAULT;
950 }
951 }
952 kfree(buff);
953 cmd_free(host, c, 0);
954 return(0);
955 }
956 case CCISS_BIG_PASSTHRU: {
957 BIG_IOCTL_Command_struct *ioc;
958 CommandList_struct *c;
959 unsigned char **buff = NULL;
960 int *buff_size = NULL;
961 u64bit temp64;
962 unsigned long flags;
963 BYTE sg_used = 0;
964 int status = 0;
965 int i;
966 DECLARE_COMPLETION(wait);
967 __u32 left;
968 __u32 sz;
969 BYTE __user *data_ptr;
970
971 if (!arg)
972 return -EINVAL;
973 if (!capable(CAP_SYS_RAWIO))
974 return -EPERM;
975 ioc = (BIG_IOCTL_Command_struct *)
976 kmalloc(sizeof(*ioc), GFP_KERNEL);
977 if (!ioc) {
978 status = -ENOMEM;
979 goto cleanup1;
980 }
981 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
982 status = -EFAULT;
983 goto cleanup1;
984 }
985 if ((ioc->buf_size < 1) &&
986 (ioc->Request.Type.Direction != XFER_NONE)) {
987 status = -EINVAL;
988 goto cleanup1;
989 }
990 /* Check kmalloc limits using all SGs */
991 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
992 status = -EINVAL;
993 goto cleanup1;
994 }
995 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
996 status = -EINVAL;
997 goto cleanup1;
998 }
999 buff = (unsigned char **) kmalloc(MAXSGENTRIES *
1000 sizeof(char *), GFP_KERNEL);
1001 if (!buff) {
1002 status = -ENOMEM;
1003 goto cleanup1;
1004 }
1005 memset(buff, 0, MAXSGENTRIES);
1006 buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
1007 GFP_KERNEL);
1008 if (!buff_size) {
1009 status = -ENOMEM;
1010 goto cleanup1;
1011 }
1012 left = ioc->buf_size;
1013 data_ptr = ioc->buf;
1014 while (left) {
1015 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
1016 buff_size[sg_used] = sz;
1017 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
1018 if (buff[sg_used] == NULL) {
1019 status = -ENOMEM;
1020 goto cleanup1;
1021 }
1022 if (ioc->Request.Type.Direction == XFER_WRITE &&
1023 copy_from_user(buff[sg_used], data_ptr, sz)) {
1024 status = -ENOMEM;
1025 goto cleanup1;
1026 } else {
1027 memset(buff[sg_used], 0, sz);
1028 }
1029 left -= sz;
1030 data_ptr += sz;
1031 sg_used++;
1032 }
1033 if ((c = cmd_alloc(host , 0)) == NULL) {
1034 status = -ENOMEM;
1035 goto cleanup1;
1036 }
1037 c->cmd_type = CMD_IOCTL_PEND;
1038 c->Header.ReplyQueue = 0;
1039
1040 if( ioc->buf_size > 0) {
1041 c->Header.SGList = sg_used;
1042 c->Header.SGTotal= sg_used;
1043 } else {
1044 c->Header.SGList = 0;
1045 c->Header.SGTotal= 0;
1046 }
1047 c->Header.LUN = ioc->LUN_info;
1048 c->Header.Tag.lower = c->busaddr;
1049
1050 c->Request = ioc->Request;
1051 if (ioc->buf_size > 0 ) {
1052 int i;
1053 for(i=0; i<sg_used; i++) {
1054 temp64.val = pci_map_single( host->pdev, buff[i],
1055 buff_size[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 */
1061 }
1062 }
1063 c->waiting = &wait;
1064 /* Put the request on the tail of the request queue */
1065 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1066 addQ(&host->reqQ, c);
1067 host->Qdepth++;
1068 start_io(host);
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);
1077 }
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);
1082 status = -EFAULT;
1083 goto cleanup1;
1084 }
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);
1091 status = -EFAULT;
1092 goto cleanup1;
1093 }
1094 ptr += buff_size[i];
1095 }
1096 }
1097 cmd_free(host, c, 0);
1098 status = 0;
1099cleanup1:
1100 if (buff) {
1101 for(i=0; i<sg_used; i++)
1102 if(buff[i] != NULL)
1103 kfree(buff[i]);
1104 kfree(buff);
1105 }
1106 if (buff_size)
1107 kfree(buff_size);
1108 if (ioc)
1109 kfree(ioc);
1110 return(status);
1111 }
1112 default:
1113 return -ENOTTY;
1114 }
1115
1116}
1117
1118/*
1119 * revalidate_allvol is for online array config utilities. After a
1120 * utility reconfigures the drives in the array, it can use this function
1121 * (through an ioctl) to make the driver zap any previous disk structs for
1122 * that controller and get new ones.
1123 *
1124 * Right now I'm using the getgeometry() function to do this, but this
1125 * function should probably be finer grained and allow you to revalidate one
1126 * particualar logical volume (instead of all of them on a particular
1127 * controller).
1128 */
1129static int revalidate_allvol(ctlr_info_t *host)
1130{
1131 int ctlr = host->ctlr, i;
1132 unsigned long flags;
1133
1134 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1135 if (host->usage_count > 1) {
1136 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1137 printk(KERN_WARNING "cciss: Device busy for volume"
1138 " revalidation (usage=%d)\n", host->usage_count);
1139 return -EBUSY;
1140 }
1141 host->usage_count++;
1142 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1143
1144 for(i=0; i< NWD; i++) {
1145 struct gendisk *disk = host->gendisk[i];
1146 if (disk->flags & GENHD_FL_UP)
1147 del_gendisk(disk);
1148 }
1149
1150 /*
1151 * Set the partition and block size structures for all volumes
1152 * on this controller to zero. We will reread all of this data
1153 */
1154 memset(host->drv, 0, sizeof(drive_info_struct)
1155 * CISS_MAX_LUN);
1156 /*
1157 * Tell the array controller not to give us any interrupts while
1158 * we check the new geometry. Then turn interrupts back on when
1159 * we're done.
1160 */
1161 host->access.set_intr_mask(host, CCISS_INTR_OFF);
1162 cciss_getgeometry(ctlr);
1163 host->access.set_intr_mask(host, CCISS_INTR_ON);
1164
1165 /* Loop through each real device */
1166 for (i = 0; i < NWD; i++) {
1167 struct gendisk *disk = host->gendisk[i];
1168 drive_info_struct *drv = &(host->drv[i]);
1169 /* we must register the controller even if no disks exist */
1170 /* this is for the online array utilities */
1171 if (!drv->heads && i)
1172 continue;
ad2b9312 1173 blk_queue_hardsect_size(drv->queue, drv->block_size);
1da177e4
LT		 1174 set_capacity(disk, drv->nr_blocks);
1175 add_disk(disk);
1176 }
1177 host->usage_count--;
1178 return 0;
1179}
1180
ddd47442
MM		 1181/* This function will check the usage_count of the drive to be updated/added.
1182 * If the usage_count is zero then the drive information will be updated and
1183 * the disk will be re-registered with the kernel. If not then it will be
1184 * left alone for the next reboot. The exception to this is disk 0 which
1185 * will always be left registered with the kernel since it is also the
1186 * controller node. Any changes to disk 0 will show up on the next
1187 * reboot.
1188*/
1189static void cciss_update_drive_info(int ctlr, int drv_index)
1190 {
1191 ctlr_info_t *h = hba[ctlr];
1192 struct gendisk *disk;
1193 ReadCapdata_struct *size_buff = NULL;
1194 InquiryData_struct *inq_buff = NULL;
1195 unsigned int block_size;
1196 unsigned int total_size;
1197 unsigned long flags = 0;
1198 int ret = 0;
1199
1200 /* if the disk already exists then deregister it before proceeding*/
1201 if (h->drv[drv_index].raid_level != -1){
1202 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1203 h->drv[drv_index].busy_configuring = 1;
1204 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1205 ret = deregister_disk(h->gendisk[drv_index],
1206 &h->drv[drv_index], 0);
1207 h->drv[drv_index].busy_configuring = 0;
1208 }
1209
1210 /* If the disk is in use return */
1211 if (ret)
1212 return;
1213
1214
1215 /* Get information about the disk and modify the driver sturcture */
1216 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1217 if (size_buff == NULL)
1218 goto mem_msg;
1219 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1220 if (inq_buff == NULL)
1221 goto mem_msg;
1222
1223 cciss_read_capacity(ctlr, drv_index, size_buff, 1,
1224 &total_size, &block_size);
1225 cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
1226 inq_buff, &h->drv[drv_index]);
1227
1228 ++h->num_luns;
1229 disk = h->gendisk[drv_index];
1230 set_capacity(disk, h->drv[drv_index].nr_blocks);
1231
1232
1233 /* if it's the controller it's already added */
1234 if (drv_index){
1235 disk->queue = blk_init_queue(do_cciss_request, &h->lock);
1236
1237 /* Set up queue information */
1238 disk->queue->backing_dev_info.ra_pages = READ_AHEAD;
1239 blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask);
1240
1241 /* This is a hardware imposed limit. */
1242 blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES);
1243
1244 /* This is a limit in the driver and could be eliminated. */
1245 blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES);
1246
1247 blk_queue_max_sectors(disk->queue, 512);
1248
1249 disk->queue->queuedata = hba[ctlr];
1250
1251 blk_queue_hardsect_size(disk->queue,
1252 hba[ctlr]->drv[drv_index].block_size);
1253
1254 h->drv[drv_index].queue = disk->queue;
1255 add_disk(disk);
1256 }
1257
1258freeret:
1259 kfree(size_buff);
1260 kfree(inq_buff);
1261 return;
1262mem_msg:
1263 printk(KERN_ERR "cciss: out of memory\n");
1264 goto freeret;
1265}
1266
1267/* This function will find the first index of the controllers drive array
1268 * that has a -1 for the raid_level and will return that index. This is
1269 * where new drives will be added. If the index to be returned is greater
1270 * than the highest_lun index for the controller then highest_lun is set
1271 * to this new index. If there are no available indexes then -1 is returned.
1272*/
1273static int cciss_find_free_drive_index(int ctlr)
1274{
1275 int i;
1276
1277 for (i=0; i < CISS_MAX_LUN; i++){
1278 if (hba[ctlr]->drv[i].raid_level == -1){
1279 if (i > hba[ctlr]->highest_lun)
1280 hba[ctlr]->highest_lun = i;
1281 return i;
1282 }
1283 }
1284 return -1;
1285}
1286
1287/* This function will add and remove logical drives from the Logical
1288 * drive array of the controller and maintain persistancy of ordering
1289 * so that mount points are preserved until the next reboot. This allows
1290 * for the removal of logical drives in the middle of the drive array
1291 * without a re-ordering of those drives.
1292 * INPUT
1293 * h = The controller to perform the operations on
1294 * del_disk = The disk to remove if specified. If the value given
1295 * is NULL then no disk is removed.
1296*/
1297static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk)
1da177e4 1298{
ddd47442
MM		 1299 int ctlr = h->ctlr;
1300 int num_luns;
1301 ReportLunData_struct *ld_buff = NULL;
1302 drive_info_struct *drv = NULL;
1303 int return_code;
1304 int listlength = 0;
1305 int i;
1306 int drv_found;
1307 int drv_index = 0;
1308 __u32 lunid = 0;
1da177e4 1309 unsigned long flags;
ddd47442
MM		 1310
1311 /* Set busy_configuring flag for this operation */
1312 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
1313 if (h->num_luns >= CISS_MAX_LUN){
1314 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1315 return -EINVAL;
1316 }
1317
1318 if (h->busy_configuring){
1319 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1320 return -EBUSY;
1321 }
1322 h->busy_configuring = 1;
1323
1324 /* if del_disk is NULL then we are being called to add a new disk
1325 * and update the logical drive table. If it is not NULL then
1326 * we will check if the disk is in use or not.
1327 */
1328 if (del_disk != NULL){
1329 drv = get_drv(del_disk);
1330 drv->busy_configuring = 1;
1331 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1332 return_code = deregister_disk(del_disk, drv, 1);
1333 drv->busy_configuring = 0;
1334 h->busy_configuring = 0;
1335 return return_code;
1336 } else {
1337 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
1338 if (!capable(CAP_SYS_RAWIO))
1339 return -EPERM;
1340
1341 ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1342 if (ld_buff == NULL)
1343 goto mem_msg;
1344
1345 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1346 sizeof(ReportLunData_struct), 0, 0, 0,
1347 TYPE_CMD);
1348
1349 if (return_code == IO_OK){
1350 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
1351 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
1352 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
1353 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1354 } else{ /* reading number of logical volumes failed */
1355 printk(KERN_WARNING "cciss: report logical volume"
1356 " command failed\n");
1357 listlength = 0;
1358 goto freeret;
1359 }
1360
1361 num_luns = listlength / 8; /* 8 bytes per entry */
1362 if (num_luns > CISS_MAX_LUN){
1363 num_luns = CISS_MAX_LUN;
1364 printk(KERN_WARNING "cciss: more luns configured"
1365 " on controller than can be handled by"
1366 " this driver.\n");
1367 }
1368
1369 /* Compare controller drive array to drivers drive array.
1370 * Check for updates in the drive information and any new drives
1371 * on the controller.
1372 */
1373 for (i=0; i < num_luns; i++){
1374 int j;
1375
1376 drv_found = 0;
1377
1378 lunid = (0xff &
1379 (unsigned int)(ld_buff->LUN[i][3])) << 24;
1380 lunid |= (0xff &
1381 (unsigned int)(ld_buff->LUN[i][2])) << 16;
1382 lunid |= (0xff &
1383 (unsigned int)(ld_buff->LUN[i][1])) << 8;
1384 lunid |= 0xff &
1385 (unsigned int)(ld_buff->LUN[i][0]);
1386
1387 /* Find if the LUN is already in the drive array
1388 * of the controller. If so then update its info
1389 * if not is use. If it does not exist then find
1390 * the first free index and add it.
1391 */
1392 for (j=0; j <= h->highest_lun; j++){
1393 if (h->drv[j].LunID == lunid){
1394 drv_index = j;
1395 drv_found = 1;
1396 }
1397 }
1398
1399 /* check if the drive was found already in the array */
1400 if (!drv_found){
1401 drv_index = cciss_find_free_drive_index(ctlr);
1402 if (drv_index == -1)
1403 goto freeret;
1404
1405 }
1406 h->drv[drv_index].LunID = lunid;
1407 cciss_update_drive_info(ctlr, drv_index);
1408 } /* end for */
1409 } /* end else */
1410
1411freeret:
1412 kfree(ld_buff);
1413 h->busy_configuring = 0;
1414 /* We return -1 here to tell the ACU that we have registered/updated
1415 * all of the drives that we can and to keep it from calling us
1416 * additional times.
1417 */
1418 return -1;
1419mem_msg:
1420 printk(KERN_ERR "cciss: out of memory\n");
1421 goto freeret;
1422}
1423
1424/* This function will deregister the disk and it's queue from the
1425 * kernel. It must be called with the controller lock held and the
1426 * drv structures busy_configuring flag set. It's parameters are:
1427 *
1428 * disk = This is the disk to be deregistered
1429 * drv = This is the drive_info_struct associated with the disk to be
1430 * deregistered. It contains information about the disk used
1431 * by the driver.
1432 * clear_all = This flag determines whether or not the disk information
1433 * is going to be completely cleared out and the highest_lun
1434 * reset. Sometimes we want to clear out information about
1435 * the disk in preperation for re-adding it. In this case
1436 * the highest_lun should be left unchanged and the LunID
1437 * should not be cleared.
1438*/
1439static int deregister_disk(struct gendisk *disk, drive_info_struct *drv,
1440 int clear_all)
1441{
1da177e4 1442 ctlr_info_t *h = get_host(disk);
1da177e4
LT		 1443
1444 if (!capable(CAP_SYS_RAWIO))
1445 return -EPERM;
1446
1da177e4 1447 /* make sure logical volume is NOT is use */
ddd47442
MM		 1448 if(clear_all || (h->gendisk[0] == disk)) {
1449 if (drv->usage_count > 1)
1da177e4
LT		 1450 return -EBUSY;
1451 }
ddd47442
MM		 1452 else
1453 if( drv->usage_count > 0 )
1454 return -EBUSY;
1da177e4 1455
ddd47442
MM		 1456 /* invalidate the devices and deregister the disk. If it is disk
1457 * zero do not deregister it but just zero out it's values. This
1458 * allows us to delete disk zero but keep the controller registered.
1459 */
1460 if (h->gendisk[0] != disk){
1461 if (disk->flags & GENHD_FL_UP){
1462 blk_cleanup_queue(disk->queue);
1da177e4 1463 del_gendisk(disk);
ddd47442
MM		 1464 drv->queue = NULL;
1465 }
1466 }
1467
1468 --h->num_luns;
1469 /* zero out the disk size info */
1470 drv->nr_blocks = 0;
1471 drv->block_size = 0;
1472 drv->heads = 0;
1473 drv->sectors = 0;
1474 drv->cylinders = 0;
1475 drv->raid_level = -1; /* This can be used as a flag variable to
1476 * indicate that this element of the drive
1477 * array is free.
1478 */
1479
1480 if (clear_all){
1da177e4
LT		 1481 /* check to see if it was the last disk */
1482 if (drv == h->drv + h->highest_lun) {
1483 /* if so, find the new hightest lun */
1484 int i, newhighest =-1;
1485 for(i=0; i<h->highest_lun; i++) {
1486 /* if the disk has size > 0, it is available */
ddd47442 1487 if (h->drv[i].heads)
1da177e4
LT		 1488 newhighest = i;
1489 }
1490 h->highest_lun = newhighest;
1da177e4 1491 }
ddd47442 1492
1da177e4 1493 drv->LunID = 0;
ddd47442 1494 }
1da177e4
LT		 1495 return(0);
1496}
ddd47442 1497
1da177e4
LT		 1498static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
1499 size_t size,
1500 unsigned int use_unit_num, /* 0: address the controller,
1501 1: address logical volume log_unit,
1502 2: periph device address is scsi3addr */
1503 unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
1504 int cmd_type)
1505{
1506 ctlr_info_t *h= hba[ctlr];
1507 u64bit buff_dma_handle;
1508 int status = IO_OK;
1509
1510 c->cmd_type = CMD_IOCTL_PEND;
1511 c->Header.ReplyQueue = 0;
1512 if( buff != NULL) {
1513 c->Header.SGList = 1;
1514 c->Header.SGTotal= 1;
1515 } else {
1516 c->Header.SGList = 0;
1517 c->Header.SGTotal= 0;
1518 }
1519 c->Header.Tag.lower = c->busaddr;
1520
1521 c->Request.Type.Type = cmd_type;
1522 if (cmd_type == TYPE_CMD) {
1523 switch(cmd) {
1524 case CISS_INQUIRY:
1525 /* If the logical unit number is 0 then, this is going
1526 to controller so It's a physical command
1527 mode = 0 target = 0. So we have nothing to write.
1528 otherwise, if use_unit_num == 1,
1529 mode = 1(volume set addressing) target = LUNID
1530 otherwise, if use_unit_num == 2,
1531 mode = 0(periph dev addr) target = scsi3addr */
1532 if (use_unit_num == 1) {
1533 c->Header.LUN.LogDev.VolId=
1534 h->drv[log_unit].LunID;
1535 c->Header.LUN.LogDev.Mode = 1;
1536 } else if (use_unit_num == 2) {
1537 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
1538 c->Header.LUN.LogDev.Mode = 0;
1539 }
1540 /* are we trying to read a vital product page */
1541 if(page_code != 0) {
1542 c->Request.CDB[1] = 0x01;
1543 c->Request.CDB[2] = page_code;
1544 }
1545 c->Request.CDBLen = 6;
1546 c->Request.Type.Attribute = ATTR_SIMPLE;
1547 c->Request.Type.Direction = XFER_READ;
1548 c->Request.Timeout = 0;
1549 c->Request.CDB[0] = CISS_INQUIRY;
1550 c->Request.CDB[4] = size & 0xFF;
1551 break;
1552 case CISS_REPORT_LOG:
1553 case CISS_REPORT_PHYS:
1554 /* Talking to controller so It's a physical command
1555 mode = 00 target = 0. Nothing to write.
1556 */
1557 c->Request.CDBLen = 12;
1558 c->Request.Type.Attribute = ATTR_SIMPLE;
1559 c->Request.Type.Direction = XFER_READ;
1560 c->Request.Timeout = 0;
1561 c->Request.CDB[0] = cmd;
1562 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1563 c->Request.CDB[7] = (size >> 16) & 0xFF;
1564 c->Request.CDB[8] = (size >> 8) & 0xFF;
1565 c->Request.CDB[9] = size & 0xFF;
1566 break;
1567
1568 case CCISS_READ_CAPACITY:
1569 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1570 c->Header.LUN.LogDev.Mode = 1;
1571 c->Request.CDBLen = 10;
1572 c->Request.Type.Attribute = ATTR_SIMPLE;
1573 c->Request.Type.Direction = XFER_READ;
1574 c->Request.Timeout = 0;
1575 c->Request.CDB[0] = cmd;
1576 break;
1577 case CCISS_CACHE_FLUSH:
1578 c->Request.CDBLen = 12;
1579 c->Request.Type.Attribute = ATTR_SIMPLE;
1580 c->Request.Type.Direction = XFER_WRITE;
1581 c->Request.Timeout = 0;
1582 c->Request.CDB[0] = BMIC_WRITE;
1583 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1584 break;
1585 default:
1586 printk(KERN_WARNING
1587 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
1588 return(IO_ERROR);
1589 }
1590 } else if (cmd_type == TYPE_MSG) {
1591 switch (cmd) {
1592 case 3: /* No-Op message */
1593 c->Request.CDBLen = 1;
1594 c->Request.Type.Attribute = ATTR_SIMPLE;
1595 c->Request.Type.Direction = XFER_WRITE;
1596 c->Request.Timeout = 0;
1597 c->Request.CDB[0] = cmd;
1598 break;
1599 default:
1600 printk(KERN_WARNING
1601 "cciss%d: unknown message type %d\n",
1602 ctlr, cmd);
1603 return IO_ERROR;
1604 }
1605 } else {
1606 printk(KERN_WARNING
1607 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1608 return IO_ERROR;
1609 }
1610 /* Fill in the scatter gather information */
1611 if (size > 0) {
1612 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1613 buff, size, PCI_DMA_BIDIRECTIONAL);
1614 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1615 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1616 c->SG[0].Len = size;
1617 c->SG[0].Ext = 0; /* we are not chaining */
1618 }
1619 return status;
1620}
1621static int sendcmd_withirq(__u8 cmd,
1622 int ctlr,
1623 void *buff,
1624 size_t size,
1625 unsigned int use_unit_num,
1626 unsigned int log_unit,
1627 __u8 page_code,
1628 int cmd_type)
1629{
1630 ctlr_info_t *h = hba[ctlr];
1631 CommandList_struct *c;
1632 u64bit buff_dma_handle;
1633 unsigned long flags;
1634 int return_status;
1635 DECLARE_COMPLETION(wait);
1636
1637 if ((c = cmd_alloc(h , 0)) == NULL)
1638 return -ENOMEM;
1639 return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1640 log_unit, page_code, NULL, cmd_type);
1641 if (return_status != IO_OK) {
1642 cmd_free(h, c, 0);
1643 return return_status;
1644 }
1645resend_cmd2:
1646 c->waiting = &wait;
1647
1648 /* Put the request on the tail of the queue and send it */
1649 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1650 addQ(&h->reqQ, c);
1651 h->Qdepth++;
1652 start_io(h);
1653 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1654
1655 wait_for_completion(&wait);
1656
1657 if(c->err_info->CommandStatus != 0)
1658 { /* an error has occurred */
1659 switch(c->err_info->CommandStatus)
1660 {
1661 case CMD_TARGET_STATUS:
1662 printk(KERN_WARNING "cciss: cmd %p has "
1663 " completed with errors\n", c);
1664 if( c->err_info->ScsiStatus)
1665 {
1666 printk(KERN_WARNING "cciss: cmd %p "
1667 "has SCSI Status = %x\n",
1668 c,
1669 c->err_info->ScsiStatus);
1670 }
1671
1672 break;
1673 case CMD_DATA_UNDERRUN:
1674 case CMD_DATA_OVERRUN:
1675 /* expected for inquire and report lun commands */
1676 break;
1677 case CMD_INVALID:
1678 printk(KERN_WARNING "cciss: Cmd %p is "
1679 "reported invalid\n", c);
1680 return_status = IO_ERROR;
1681 break;
1682 case CMD_PROTOCOL_ERR:
1683 printk(KERN_WARNING "cciss: cmd %p has "
1684 "protocol error \n", c);
1685 return_status = IO_ERROR;
1686 break;
1687case CMD_HARDWARE_ERR:
1688 printk(KERN_WARNING "cciss: cmd %p had "
1689 " hardware error\n", c);
1690 return_status = IO_ERROR;
1691 break;
1692 case CMD_CONNECTION_LOST:
1693 printk(KERN_WARNING "cciss: cmd %p had "
1694 "connection lost\n", c);
1695 return_status = IO_ERROR;
1696 break;
1697 case CMD_ABORTED:
1698 printk(KERN_WARNING "cciss: cmd %p was "
1699 "aborted\n", c);
1700 return_status = IO_ERROR;
1701 break;
1702 case CMD_ABORT_FAILED:
1703 printk(KERN_WARNING "cciss: cmd %p reports "
1704 "abort failed\n", c);
1705 return_status = IO_ERROR;
1706 break;
1707 case CMD_UNSOLICITED_ABORT:
1708 printk(KERN_WARNING
1709 "cciss%d: unsolicited abort %p\n",
1710 ctlr, c);
1711 if (c->retry_count < MAX_CMD_RETRIES) {
1712 printk(KERN_WARNING
1713 "cciss%d: retrying %p\n",
1714 ctlr, c);
1715 c->retry_count++;
1716 /* erase the old error information */
1717 memset(c->err_info, 0,
1718 sizeof(ErrorInfo_struct));
1719 return_status = IO_OK;
1720 INIT_COMPLETION(wait);
1721 goto resend_cmd2;
1722 }
1723 return_status = IO_ERROR;
1724 break;
1725 default:
1726 printk(KERN_WARNING "cciss: cmd %p returned "
1727 "unknown status %x\n", c,
1728 c->err_info->CommandStatus);
1729 return_status = IO_ERROR;
1730 }
1731 }
1732 /* unlock the buffers from DMA */
1733 pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1734 size, PCI_DMA_BIDIRECTIONAL);
1735 cmd_free(h, c, 0);
1736 return(return_status);
1737
1738}
1739static void cciss_geometry_inquiry(int ctlr, int logvol,
1740 int withirq, unsigned int total_size,
1741 unsigned int block_size, InquiryData_struct *inq_buff,
1742 drive_info_struct *drv)
1743{
1744 int return_code;
1745 memset(inq_buff, 0, sizeof(InquiryData_struct));
1746 if (withirq)
1747 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1748 inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1749 else
1750 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1751 sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1752 if (return_code == IO_OK) {
1753 if(inq_buff->data_byte[8] == 0xFF) {
1754 printk(KERN_WARNING
1755 "cciss: reading geometry failed, volume "
1756 "does not support reading geometry\n");
1757 drv->block_size = block_size;
1758 drv->nr_blocks = total_size;
1759 drv->heads = 255;
1760 drv->sectors = 32; // Sectors per track
1761 drv->cylinders = total_size / 255 / 32;
1762 } else {
1763 unsigned int t;
1764
1765 drv->block_size = block_size;
1766 drv->nr_blocks = total_size;
1767 drv->heads = inq_buff->data_byte[6];
1768 drv->sectors = inq_buff->data_byte[7];
1769 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1770 drv->cylinders += inq_buff->data_byte[5];
1771 drv->raid_level = inq_buff->data_byte[8];
1772 t = drv->heads * drv->sectors;
1773 if (t > 1) {
1774 drv->cylinders = total_size/t;
1775 }
1776 }
1777 } else { /* Get geometry failed */
1778 printk(KERN_WARNING "cciss: reading geometry failed\n");
1779 }
1780 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
1781 drv->heads, drv->sectors, drv->cylinders);
1782}
1783static void
1784cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1785 int withirq, unsigned int *total_size, unsigned int *block_size)
1786{
1787 int return_code;
1788 memset(buf, 0, sizeof(*buf));
1789 if (withirq)
1790 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1791 ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1792 else
1793 return_code = sendcmd(CCISS_READ_CAPACITY,
1794 ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1795 if (return_code == IO_OK) {
1796 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1797 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1798 } else { /* read capacity command failed */
1799 printk(KERN_WARNING "cciss: read capacity failed\n");
1800 *total_size = 0;
1801 *block_size = BLOCK_SIZE;
1802 }
1803 printk(KERN_INFO " blocks= %u block_size= %d\n",
1804 *total_size, *block_size);
1805 return;
1806}
1807
1da177e4
LT		 1808static int cciss_revalidate(struct gendisk *disk)
1809{
1810 ctlr_info_t *h = get_host(disk);
1811 drive_info_struct *drv = get_drv(disk);
1812 int logvol;
1813 int FOUND=0;
1814 unsigned int block_size;
1815 unsigned int total_size;
1816 ReadCapdata_struct *size_buff = NULL;
1817 InquiryData_struct *inq_buff = NULL;
1818
1819 for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1820 {
1821 if(h->drv[logvol].LunID == drv->LunID) {
1822 FOUND=1;
1823 break;
1824 }
1825 }
1826
1827 if (!FOUND) return 1;
1828
1829 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1830 if (size_buff == NULL)
1831 {
1832 printk(KERN_WARNING "cciss: out of memory\n");
1833 return 1;
1834 }
1835 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1836 if (inq_buff == NULL)
1837 {
1838 printk(KERN_WARNING "cciss: out of memory\n");
1839 kfree(size_buff);
1840 return 1;
1841 }
1842
1843 cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1844 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1845
ad2b9312 1846 blk_queue_hardsect_size(drv->queue, drv->block_size);
1da177e4
LT		 1847 set_capacity(disk, drv->nr_blocks);
1848
1849 kfree(size_buff);
1850 kfree(inq_buff);
1851 return 0;
1852}
1853
1854/*
1855 * Wait polling for a command to complete.
1856 * The memory mapped FIFO is polled for the completion.
1857 * Used only at init time, interrupts from the HBA are disabled.
1858 */
1859static unsigned long pollcomplete(int ctlr)
1860{
1861 unsigned long done;
1862 int i;
1863
1864 /* Wait (up to 20 seconds) for a command to complete */
1865
1866 for (i = 20 * HZ; i > 0; i--) {
1867 done = hba[ctlr]->access.command_completed(hba[ctlr]);
86e84862
NA		 1868 if (done == FIFO_EMPTY)
1869 schedule_timeout_uninterruptible(1);
1870 else
1da177e4
LT		 1871 return (done);
1872 }
1873 /* Invalid address to tell caller we ran out of time */
1874 return 1;
1875}
1876/*
1877 * Send a command to the controller, and wait for it to complete.
1878 * Only used at init time.
1879 */
1880static int sendcmd(
1881 __u8 cmd,
1882 int ctlr,
1883 void *buff,
1884 size_t size,
1885 unsigned int use_unit_num, /* 0: address the controller,
1886 1: address logical volume log_unit,
1887 2: periph device address is scsi3addr */
1888 unsigned int log_unit,
1889 __u8 page_code,
1890 unsigned char *scsi3addr,
1891 int cmd_type)
1892{
1893 CommandList_struct *c;
1894 int i;
1895 unsigned long complete;
1896 ctlr_info_t *info_p= hba[ctlr];
1897 u64bit buff_dma_handle;
1898 int status;
1899
1900 if ((c = cmd_alloc(info_p, 1)) == NULL) {
1901 printk(KERN_WARNING "cciss: unable to get memory");
1902 return(IO_ERROR);
1903 }
1904 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1905 log_unit, page_code, scsi3addr, cmd_type);
1906 if (status != IO_OK) {
1907 cmd_free(info_p, c, 1);
1908 return status;
1909 }
1910resend_cmd1:
1911 /*
1912 * Disable interrupt
1913 */
1914#ifdef CCISS_DEBUG
1915 printk(KERN_DEBUG "cciss: turning intr off\n");
1916#endif /* CCISS_DEBUG */
1917 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1918
1919 /* Make sure there is room in the command FIFO */
1920 /* Actually it should be completely empty at this time. */
1921 for (i = 200000; i > 0; i--)
1922 {
1923 /* if fifo isn't full go */
1924 if (!(info_p->access.fifo_full(info_p)))
1925 {
1926
1927 break;
1928 }
1929 udelay(10);
1930 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
1931 " waiting!\n", ctlr);
1932 }
1933 /*
1934 * Send the cmd
1935 */
1936 info_p->access.submit_command(info_p, c);
1937 complete = pollcomplete(ctlr);
1938
1939#ifdef CCISS_DEBUG
1940 printk(KERN_DEBUG "cciss: command completed\n");
1941#endif /* CCISS_DEBUG */
1942
1943 if (complete != 1) {
1944 if ( (complete & CISS_ERROR_BIT)
1945 && (complete & ~CISS_ERROR_BIT) == c->busaddr)
1946 {
1947 /* if data overrun or underun on Report command
1948 ignore it
1949 */
1950 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
1951 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
1952 (c->Request.CDB[0] == CISS_INQUIRY)) &&
1953 ((c->err_info->CommandStatus ==
1954 CMD_DATA_OVERRUN) ||
1955 (c->err_info->CommandStatus ==
1956 CMD_DATA_UNDERRUN)
1957 ))
1958 {
1959 complete = c->busaddr;
1960 } else {
1961 if (c->err_info->CommandStatus ==
1962 CMD_UNSOLICITED_ABORT) {
1963 printk(KERN_WARNING "cciss%d: "
1964 "unsolicited abort %p\n",
1965 ctlr, c);
1966 if (c->retry_count < MAX_CMD_RETRIES) {
1967 printk(KERN_WARNING
1968 "cciss%d: retrying %p\n",
1969 ctlr, c);
1970 c->retry_count++;
1971 /* erase the old error */
1972 /* information */
1973 memset(c->err_info, 0,
1974 sizeof(ErrorInfo_struct));
1975 goto resend_cmd1;
1976 } else {
1977 printk(KERN_WARNING
1978 "cciss%d: retried %p too "
1979 "many times\n", ctlr, c);
1980 status = IO_ERROR;
1981 goto cleanup1;
1982 }
1983 }
1984 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1985 " Error %x \n", ctlr,
1986 c->err_info->CommandStatus);
1987 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1988 " offensive info\n"
1989 " size %x\n num %x value %x\n", ctlr,
1990 c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
1991 c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
1992 c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
1993 status = IO_ERROR;
1994 goto cleanup1;
1995 }
1996 }
1997 if (complete != c->busaddr) {
1998 printk( KERN_WARNING "cciss cciss%d: SendCmd "
1999 "Invalid command list address returned! (%lx)\n",
2000 ctlr, complete);
2001 status = IO_ERROR;
2002 goto cleanup1;
2003 }
2004 } else {
2005 printk( KERN_WARNING
2006 "cciss cciss%d: SendCmd Timeout out, "
2007 "No command list address returned!\n",
2008 ctlr);
2009 status = IO_ERROR;
2010 }
2011
2012cleanup1:
2013 /* unlock the data buffer from DMA */
2014 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
2015 size, PCI_DMA_BIDIRECTIONAL);
2016 cmd_free(info_p, c, 1);
2017 return (status);
2018}
2019/*
2020 * Map (physical) PCI mem into (virtual) kernel space
2021 */
2022static void __iomem *remap_pci_mem(ulong base, ulong size)
2023{
2024 ulong page_base = ((ulong) base) & PAGE_MASK;
2025 ulong page_offs = ((ulong) base) - page_base;
2026 void __iomem *page_remapped = ioremap(page_base, page_offs+size);
2027
2028 return page_remapped ? (page_remapped + page_offs) : NULL;
2029}
2030
2031/*
2032 * Takes jobs of the Q and sends them to the hardware, then puts it on
2033 * the Q to wait for completion.
2034 */
2035static void start_io( ctlr_info_t *h)
2036{
2037 CommandList_struct *c;
2038
2039 while(( c = h->reqQ) != NULL )
2040 {
2041 /* can't do anything if fifo is full */
2042 if ((h->access.fifo_full(h))) {
2043 printk(KERN_WARNING "cciss: fifo full\n");
2044 break;
2045 }
2046
2047 /* Get the frist entry from the Request Q */
2048 removeQ(&(h->reqQ), c);
2049 h->Qdepth--;
2050
2051 /* Tell the controller execute command */
2052 h->access.submit_command(h, c);
2053
2054 /* Put job onto the completed Q */
2055 addQ (&(h->cmpQ), c);
2056 }
2057}
2058
2059static inline void complete_buffers(struct bio *bio, int status)
2060{
2061 while (bio) {
2062 struct bio *xbh = bio->bi_next;
2063 int nr_sectors = bio_sectors(bio);
2064
2065 bio->bi_next = NULL;
2066 blk_finished_io(len);
2067 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
2068 bio = xbh;
2069 }
2070
2071}
2072/* Assumes that CCISS_LOCK(h->ctlr) is held. */
2073/* Zeros out the error record and then resends the command back */
2074/* to the controller */
2075static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
2076{
2077 /* erase the old error information */
2078 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
2079
2080 /* add it to software queue and then send it to the controller */
2081 addQ(&(h->reqQ),c);
2082 h->Qdepth++;
2083 if(h->Qdepth > h->maxQsinceinit)
2084 h->maxQsinceinit = h->Qdepth;
2085
2086 start_io(h);
2087}
2088/* checks the status of the job and calls complete buffers to mark all
2089 * buffers for the completed job.
2090 */
2091static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
2092 int timeout)
2093{
2094 int status = 1;
2095 int i;
2096 int retry_cmd = 0;
2097 u64bit temp64;
2098
2099 if (timeout)
2100 status = 0;
2101
2102 if(cmd->err_info->CommandStatus != 0)
2103 { /* an error has occurred */
2104 switch(cmd->err_info->CommandStatus)
2105 {
2106 unsigned char sense_key;
2107 case CMD_TARGET_STATUS:
2108 status = 0;
2109
2110 if( cmd->err_info->ScsiStatus == 0x02)
2111 {
2112 printk(KERN_WARNING "cciss: cmd %p "
2113 "has CHECK CONDITION "
2114 " byte 2 = 0x%x\n", cmd,
2115 cmd->err_info->SenseInfo[2]
2116 );
2117 /* check the sense key */
2118 sense_key = 0xf &
2119 cmd->err_info->SenseInfo[2];
2120 /* no status or recovered error */
2121 if((sense_key == 0x0) ||
2122 (sense_key == 0x1))
2123 {
2124 status = 1;
2125 }
2126 } else
2127 {
2128 printk(KERN_WARNING "cciss: cmd %p "
2129 "has SCSI Status 0x%x\n",
2130 cmd, cmd->err_info->ScsiStatus);
2131 }
2132 break;
2133 case CMD_DATA_UNDERRUN:
2134 printk(KERN_WARNING "cciss: cmd %p has"
2135 " completed with data underrun "
2136 "reported\n", cmd);
2137 break;
2138 case CMD_DATA_OVERRUN:
2139 printk(KERN_WARNING "cciss: cmd %p has"
2140 " completed with data overrun "
2141 "reported\n", cmd);
2142 break;
2143 case CMD_INVALID:
2144 printk(KERN_WARNING "cciss: cmd %p is "
2145 "reported invalid\n", cmd);
2146 status = 0;
2147 break;
2148 case CMD_PROTOCOL_ERR:
2149 printk(KERN_WARNING "cciss: cmd %p has "
2150 "protocol error \n", cmd);
2151 status = 0;
2152 break;
2153 case CMD_HARDWARE_ERR:
2154 printk(KERN_WARNING "cciss: cmd %p had "
2155 " hardware error\n", cmd);
2156 status = 0;
2157 break;
2158 case CMD_CONNECTION_LOST:
2159 printk(KERN_WARNING "cciss: cmd %p had "
2160 "connection lost\n", cmd);
2161 status=0;
2162 break;
2163 case CMD_ABORTED:
2164 printk(KERN_WARNING "cciss: cmd %p was "
2165 "aborted\n", cmd);
2166 status=0;
2167 break;
2168 case CMD_ABORT_FAILED:
2169 printk(KERN_WARNING "cciss: cmd %p reports "
2170 "abort failed\n", cmd);
2171 status=0;
2172 break;
2173 case CMD_UNSOLICITED_ABORT:
2174 printk(KERN_WARNING "cciss%d: unsolicited "
2175 "abort %p\n", h->ctlr, cmd);
2176 if (cmd->retry_count < MAX_CMD_RETRIES) {
2177 retry_cmd=1;
2178 printk(KERN_WARNING
2179 "cciss%d: retrying %p\n",
2180 h->ctlr, cmd);
2181 cmd->retry_count++;
2182 } else
2183 printk(KERN_WARNING
2184 "cciss%d: %p retried too "
2185 "many times\n", h->ctlr, cmd);
2186 status=0;
2187 break;
2188 case CMD_TIMEOUT:
2189 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2190 cmd);
2191 status=0;
2192 break;
2193 default:
2194 printk(KERN_WARNING "cciss: cmd %p returned "
2195 "unknown status %x\n", cmd,
2196 cmd->err_info->CommandStatus);
2197 status=0;
2198 }
2199 }
2200 /* We need to return this command */
2201 if(retry_cmd) {
2202 resend_cciss_cmd(h,cmd);
2203 return;
2204 }
2205 /* command did not need to be retried */
2206 /* unmap the DMA mapping for all the scatter gather elements */
2207 for(i=0; i<cmd->Header.SGList; i++) {
2208 temp64.val32.lower = cmd->SG[i].Addr.lower;
2209 temp64.val32.upper = cmd->SG[i].Addr.upper;
2210 pci_unmap_page(hba[cmd->ctlr]->pdev,
2211 temp64.val, cmd->SG[i].Len,
2212 (cmd->Request.Type.Direction == XFER_READ) ?
2213 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2214 }
2215 complete_buffers(cmd->rq->bio, status);
2216
2217#ifdef CCISS_DEBUG
2218 printk("Done with %p\n", cmd->rq);
2219#endif /* CCISS_DEBUG */
2220
2221 end_that_request_last(cmd->rq);
2222 cmd_free(h,cmd,1);
2223}
2224
2225/*
2226 * Get a request and submit it to the controller.
2227 */
2228static void do_cciss_request(request_queue_t *q)
2229{
2230 ctlr_info_t *h= q->queuedata;
2231 CommandList_struct *c;
2232 int start_blk, seg;
2233 struct request *creq;
2234 u64bit temp64;
2235 struct scatterlist tmp_sg[MAXSGENTRIES];
2236 drive_info_struct *drv;
2237 int i, dir;
2238
2239 /* We call start_io here in case there is a command waiting on the
2240 * queue that has not been sent.
2241 */
2242 if (blk_queue_plugged(q))
2243 goto startio;
2244
2245queue:
2246 creq = elv_next_request(q);
2247 if (!creq)
2248 goto startio;
2249
2250 if (creq->nr_phys_segments > MAXSGENTRIES)
2251 BUG();
2252
2253 if (( c = cmd_alloc(h, 1)) == NULL)
2254 goto full;
2255
2256 blkdev_dequeue_request(creq);
2257
2258 spin_unlock_irq(q->queue_lock);
2259
2260 c->cmd_type = CMD_RWREQ;
2261 c->rq = creq;
2262
2263 /* fill in the request */
2264 drv = creq->rq_disk->private_data;
2265 c->Header.ReplyQueue = 0; // unused in simple mode
33079b21
MM		 2266 /* got command from pool, so use the command block index instead */
2267 /* for direct lookups. */
2268 /* The first 2 bits are reserved for controller error reporting. */
2269 c->Header.Tag.lower = (c->cmdindex << 3);
2270 c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */
1da177e4
LT		 2271 c->Header.LUN.LogDev.VolId= drv->LunID;
2272 c->Header.LUN.LogDev.Mode = 1;
2273 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2274 c->Request.Type.Type = TYPE_CMD; // It is a command.
2275 c->Request.Type.Attribute = ATTR_SIMPLE;
2276 c->Request.Type.Direction =
2277 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
2278 c->Request.Timeout = 0; // Don't time out
2279 c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2280 start_blk = creq->sector;
2281#ifdef CCISS_DEBUG
2282 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2283 (int) creq->nr_sectors);
2284#endif /* CCISS_DEBUG */
2285
2286 seg = blk_rq_map_sg(q, creq, tmp_sg);
2287
2288 /* get the DMA records for the setup */
2289 if (c->Request.Type.Direction == XFER_READ)
2290 dir = PCI_DMA_FROMDEVICE;
2291 else
2292 dir = PCI_DMA_TODEVICE;
2293
2294 for (i=0; i<seg; i++)
2295 {
2296 c->SG[i].Len = tmp_sg[i].length;
2297 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2298 tmp_sg[i].offset, tmp_sg[i].length,
2299 dir);
2300 c->SG[i].Addr.lower = temp64.val32.lower;
2301 c->SG[i].Addr.upper = temp64.val32.upper;
2302 c->SG[i].Ext = 0; // we are not chaining
2303 }
2304 /* track how many SG entries we are using */
2305 if( seg > h->maxSG)
2306 h->maxSG = seg;
2307
2308#ifdef CCISS_DEBUG
2309 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2310#endif /* CCISS_DEBUG */
2311
2312 c->Header.SGList = c->Header.SGTotal = seg;
2313 c->Request.CDB[1]= 0;
2314 c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB
2315 c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2316 c->Request.CDB[4]= (start_blk >> 8) & 0xff;
2317 c->Request.CDB[5]= start_blk & 0xff;
2318 c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2319 c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff;
2320 c->Request.CDB[8]= creq->nr_sectors & 0xff;
2321 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2322
2323 spin_lock_irq(q->queue_lock);
2324
2325 addQ(&(h->reqQ),c);
2326 h->Qdepth++;
2327 if(h->Qdepth > h->maxQsinceinit)
2328 h->maxQsinceinit = h->Qdepth;
2329
2330 goto queue;
2331full:
2332 blk_stop_queue(q);
2333startio:
2334 /* We will already have the driver lock here so not need
2335 * to lock it.
2336 */
2337 start_io(h);
2338}
2339
2340static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2341{
2342 ctlr_info_t *h = dev_id;
2343 CommandList_struct *c;
2344 unsigned long flags;
33079b21 2345 __u32 a, a1, a2;
1da177e4
LT		 2346 int j;
2347 int start_queue = h->next_to_run;
2348
2349 /* Is this interrupt for us? */
2350 if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2351 return IRQ_NONE;
2352
2353 /*
2354 * If there are completed commands in the completion queue,
2355 * we had better do something about it.
2356 */
2357 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2358 while( h->access.intr_pending(h))
2359 {
2360 while((a = h->access.command_completed(h)) != FIFO_EMPTY)
2361 {
2362 a1 = a;
33079b21
MM		 2363 if ((a & 0x04)) {
2364 a2 = (a >> 3);
2365 if (a2 >= NR_CMDS) {
2366 printk(KERN_WARNING "cciss: controller cciss%d failed, stopping.\n", h->ctlr);
2367 fail_all_cmds(h->ctlr);
2368 return IRQ_HANDLED;
2369 }
2370
2371 c = h->cmd_pool + a2;
2372 a = c->busaddr;
2373
2374 } else {
1da177e4 2375 a &= ~3;
33079b21
MM		 2376 if ((c = h->cmpQ) == NULL) {
2377 printk(KERN_WARNING "cciss: Completion of %08x ignored\n", a1);
1da177e4
LT		 2378 continue;
2379 }
2380 while(c->busaddr != a) {
2381 c = c->next;
2382 if (c == h->cmpQ)
2383 break;
2384 }
33079b21 2385 }
1da177e4
LT		 2386 /*
2387 * If we've found the command, take it off the
2388 * completion Q and free it
2389 */
2390 if (c->busaddr == a) {
2391 removeQ(&h->cmpQ, c);
2392 if (c->cmd_type == CMD_RWREQ) {
2393 complete_command(h, c, 0);
2394 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2395 complete(c->waiting);
2396 }
2397# ifdef CONFIG_CISS_SCSI_TAPE
2398 else if (c->cmd_type == CMD_SCSI)
2399 complete_scsi_command(c, 0, a1);
2400# endif
2401 continue;
2402 }
2403 }
2404 }
2405
2406 /* check to see if we have maxed out the number of commands that can
2407 * be placed on the queue. If so then exit. We do this check here
2408 * in case the interrupt we serviced was from an ioctl and did not
2409 * free any new commands.
2410 */
2411 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2412 goto cleanup;
2413
2414 /* We have room on the queue for more commands. Now we need to queue
2415 * them up. We will also keep track of the next queue to run so
2416 * that every queue gets a chance to be started first.
2417 */
ad2b9312
MM		 2418 for (j=0; j < h->highest_lun + 1; j++){
2419 int curr_queue = (start_queue + j) % (h->highest_lun + 1);
1da177e4
LT		 2420 /* make sure the disk has been added and the drive is real
2421 * because this can be called from the middle of init_one.
2422 */
ad2b9312 2423 if(!(h->drv[curr_queue].queue) ||
1da177e4
LT		 2424 !(h->drv[curr_queue].heads))
2425 continue;
2426 blk_start_queue(h->gendisk[curr_queue]->queue);
2427
2428 /* check to see if we have maxed out the number of commands
2429 * that can be placed on the queue.
2430 */
2431 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2432 {
2433 if (curr_queue == start_queue){
ad2b9312 2434 h->next_to_run = (start_queue + 1) % (h->highest_lun + 1);
1da177e4
LT		 2435 goto cleanup;
2436 } else {
2437 h->next_to_run = curr_queue;
2438 goto cleanup;
2439 }
2440 } else {
ad2b9312 2441 curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
1da177e4
LT		 2442 }
2443 }
2444
2445cleanup:
2446 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2447 return IRQ_HANDLED;
2448}
1da177e4
LT		 2449/*
2450 * We cannot read the structure directly, for portablity we must use
2451 * the io functions.
2452 * This is for debug only.
2453 */
2454#ifdef CCISS_DEBUG
2455static void print_cfg_table( CfgTable_struct *tb)
2456{
2457 int i;
2458 char temp_name[17];
2459
2460 printk("Controller Configuration information\n");
2461 printk("------------------------------------\n");
2462 for(i=0;i<4;i++)
2463 temp_name[i] = readb(&(tb->Signature[i]));
2464 temp_name[4]='\0';
2465 printk(" Signature = %s\n", temp_name);
2466 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2467 printk(" Transport methods supported = 0x%x\n",
2468 readl(&(tb-> TransportSupport)));
2469 printk(" Transport methods active = 0x%x\n",
2470 readl(&(tb->TransportActive)));
2471 printk(" Requested transport Method = 0x%x\n",
2472 readl(&(tb->HostWrite.TransportRequest)));
2473 printk(" Coalese Interrupt Delay = 0x%x\n",
2474 readl(&(tb->HostWrite.CoalIntDelay)));
2475 printk(" Coalese Interrupt Count = 0x%x\n",
2476 readl(&(tb->HostWrite.CoalIntCount)));
2477 printk(" Max outstanding commands = 0x%d\n",
2478 readl(&(tb->CmdsOutMax)));
2479 printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2480 for(i=0;i<16;i++)
2481 temp_name[i] = readb(&(tb->ServerName[i]));
2482 temp_name[16] = '\0';
2483 printk(" Server Name = %s\n", temp_name);
2484 printk(" Heartbeat Counter = 0x%x\n\n\n",
2485 readl(&(tb->HeartBeat)));
2486}
2487#endif /* CCISS_DEBUG */
2488
2489static void release_io_mem(ctlr_info_t *c)
2490{
2491 /* if IO mem was not protected do nothing */
2492 if( c->io_mem_addr == 0)
2493 return;
2494 release_region(c->io_mem_addr, c->io_mem_length);
2495 c->io_mem_addr = 0;
2496 c->io_mem_length = 0;
2497}
2498
2499static int find_PCI_BAR_index(struct pci_dev *pdev,
2500 unsigned long pci_bar_addr)
2501{
2502 int i, offset, mem_type, bar_type;
2503 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2504 return 0;
2505 offset = 0;
2506 for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2507 bar_type = pci_resource_flags(pdev, i) &
2508 PCI_BASE_ADDRESS_SPACE;
2509 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2510 offset += 4;
2511 else {
2512 mem_type = pci_resource_flags(pdev, i) &
2513 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2514 switch (mem_type) {
2515 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2516 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2517 offset += 4; /* 32 bit */
2518 break;
2519 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2520 offset += 8;
2521 break;
2522 default: /* reserved in PCI 2.2 */
2523 printk(KERN_WARNING "Base address is invalid\n");
2524 return -1;
2525 break;
2526 }
2527 }
2528 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2529 return i+1;
2530 }
2531 return -1;
2532}
2533
2534static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2535{
2536 ushort subsystem_vendor_id, subsystem_device_id, command;
2537 __u32 board_id, scratchpad = 0;
2538 __u64 cfg_offset;
2539 __u32 cfg_base_addr;
2540 __u64 cfg_base_addr_index;
2541 int i;
2542
2543 /* check to see if controller has been disabled */
2544 /* BEFORE trying to enable it */
2545 (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2546 if(!(command & 0x02))
2547 {
2548 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2549 return(-1);
2550 }
2551
2552 if (pci_enable_device(pdev))
2553 {
2554 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2555 return( -1);
2556 }
1da177e4
LT		 2557
2558 subsystem_vendor_id = pdev->subsystem_vendor;
2559 subsystem_device_id = pdev->subsystem_device;
2560 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2561 subsystem_vendor_id);
2562
2563 /* search for our IO range so we can protect it */
2564 for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2565 {
2566 /* is this an IO range */
2567 if( pci_resource_flags(pdev, i) & 0x01 ) {
2568 c->io_mem_addr = pci_resource_start(pdev, i);
2569 c->io_mem_length = pci_resource_end(pdev, i) -
2570 pci_resource_start(pdev, i) +1;
2571#ifdef CCISS_DEBUG
2572 printk("IO value found base_addr[%d] %lx %lx\n", i,
2573 c->io_mem_addr, c->io_mem_length);
2574#endif /* CCISS_DEBUG */
2575 /* register the IO range */
2576 if(!request_region( c->io_mem_addr,
2577 c->io_mem_length, "cciss"))
2578 {
2579 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2580 c->io_mem_addr, c->io_mem_length);
2581 c->io_mem_addr= 0;
2582 c->io_mem_length = 0;
2583 }
2584 break;
2585 }
2586 }
2587
2588#ifdef CCISS_DEBUG
2589 printk("command = %x\n", command);
2590 printk("irq = %x\n", pdev->irq);
2591 printk("board_id = %x\n", board_id);
2592#endif /* CCISS_DEBUG */
2593
2594 c->intr = pdev->irq;
2595
2596 /*
2597 * Memory base addr is first addr , the second points to the config
2598 * table
2599 */
2600
2601 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2602#ifdef CCISS_DEBUG
2603 printk("address 0 = %x\n", c->paddr);
2604#endif /* CCISS_DEBUG */
2605 c->vaddr = remap_pci_mem(c->paddr, 200);
2606
2607 /* Wait for the board to become ready. (PCI hotplug needs this.)
2608 * We poll for up to 120 secs, once per 100ms. */
2609 for (i=0; i < 1200; i++) {
2610 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2611 if (scratchpad == CCISS_FIRMWARE_READY)
2612 break;
2613 set_current_state(TASK_INTERRUPTIBLE);
2614 schedule_timeout(HZ / 10); /* wait 100ms */
2615 }
2616 if (scratchpad != CCISS_FIRMWARE_READY) {
2617 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2618 return -1;
2619 }
2620
2621 /* get the address index number */
2622 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2623 cfg_base_addr &= (__u32) 0x0000ffff;
2624#ifdef CCISS_DEBUG
2625 printk("cfg base address = %x\n", cfg_base_addr);
2626#endif /* CCISS_DEBUG */
2627 cfg_base_addr_index =
2628 find_PCI_BAR_index(pdev, cfg_base_addr);
2629#ifdef CCISS_DEBUG
2630 printk("cfg base address index = %x\n", cfg_base_addr_index);
2631#endif /* CCISS_DEBUG */
2632 if (cfg_base_addr_index == -1) {
2633 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2634 release_io_mem(c);
2635 return -1;
2636 }
2637
2638 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2639#ifdef CCISS_DEBUG
2640 printk("cfg offset = %x\n", cfg_offset);
2641#endif /* CCISS_DEBUG */
2642 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
2643 cfg_base_addr_index) + cfg_offset,
2644 sizeof(CfgTable_struct));
2645 c->board_id = board_id;
2646
2647#ifdef CCISS_DEBUG
2648 print_cfg_table(c->cfgtable);
2649#endif /* CCISS_DEBUG */
2650
2651 for(i=0; i<NR_PRODUCTS; i++) {
2652 if (board_id == products[i].board_id) {
2653 c->product_name = products[i].product_name;
2654 c->access = *(products[i].access);
2655 break;
2656 }
2657 }
2658 if (i == NR_PRODUCTS) {
2659 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2660 " to access the Smart Array controller %08lx\n",
2661 (unsigned long)board_id);
2662 return -1;
2663 }
2664 if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
2665 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2666 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2667 (readb(&c->cfgtable->Signature[3]) != 'S') )
2668 {
2669 printk("Does not appear to be a valid CISS config table\n");
2670 return -1;
2671 }
2672
2673#ifdef CONFIG_X86
2674{
2675 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2676 __u32 prefetch;
2677 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2678 prefetch |= 0x100;
2679 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2680}
2681#endif
2682
2683#ifdef CCISS_DEBUG
2684 printk("Trying to put board into Simple mode\n");
2685#endif /* CCISS_DEBUG */
2686 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2687 /* Update the field, and then ring the doorbell */
2688 writel( CFGTBL_Trans_Simple,
2689 &(c->cfgtable->HostWrite.TransportRequest));
2690 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2691
2692 /* under certain very rare conditions, this can take awhile.
2693 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2694 * as we enter this code.) */
2695 for(i=0;i<MAX_CONFIG_WAIT;i++) {
2696 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2697 break;
2698 /* delay and try again */
2699 set_current_state(TASK_INTERRUPTIBLE);
2700 schedule_timeout(10);
2701 }
2702
2703#ifdef CCISS_DEBUG
2704 printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2705#endif /* CCISS_DEBUG */
2706#ifdef CCISS_DEBUG
2707 print_cfg_table(c->cfgtable);
2708#endif /* CCISS_DEBUG */
2709
2710 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2711 {
2712 printk(KERN_WARNING "cciss: unable to get board into"
2713 " simple mode\n");
2714 return -1;
2715 }
2716 return 0;
2717
2718}
2719
2720/*
2721 * Gets information about the local volumes attached to the controller.
2722 */
2723static void cciss_getgeometry(int cntl_num)
2724{
2725 ReportLunData_struct *ld_buff;
2726 ReadCapdata_struct *size_buff;
2727 InquiryData_struct *inq_buff;
2728 int return_code;
2729 int i;
2730 int listlength = 0;
2731 __u32 lunid = 0;
2732 int block_size;
2733 int total_size;
2734
2735 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2736 if (ld_buff == NULL)
2737 {
2738 printk(KERN_ERR "cciss: out of memory\n");
2739 return;
2740 }
2741 memset(ld_buff, 0, sizeof(ReportLunData_struct));
2742 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2743 if (size_buff == NULL)
2744 {
2745 printk(KERN_ERR "cciss: out of memory\n");
2746 kfree(ld_buff);
2747 return;
2748 }
2749 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2750 if (inq_buff == NULL)
2751 {
2752 printk(KERN_ERR "cciss: out of memory\n");
2753 kfree(ld_buff);
2754 kfree(size_buff);
2755 return;
2756 }
2757 /* Get the firmware version */
2758 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2759 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2760 if (return_code == IO_OK)
2761 {
2762 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2763 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2764 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2765 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2766 } else /* send command failed */
2767 {
2768 printk(KERN_WARNING "cciss: unable to determine firmware"
2769 " version of controller\n");
2770 }
2771 /* Get the number of logical volumes */
2772 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2773 sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2774
2775 if( return_code == IO_OK)
2776 {
2777#ifdef CCISS_DEBUG
2778 printk("LUN Data\n--------------------------\n");
2779#endif /* CCISS_DEBUG */
2780
2781 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2782 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2783 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
2784 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2785 } else /* reading number of logical volumes failed */
2786 {
2787 printk(KERN_WARNING "cciss: report logical volume"
2788 " command failed\n");
2789 listlength = 0;
2790 }
2791 hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2792 if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2793 {
2794 printk(KERN_ERR "ciss: only %d number of logical volumes supported\n",
2795 CISS_MAX_LUN);
2796 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2797 }
2798#ifdef CCISS_DEBUG
2799 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2800 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2801 ld_buff->LUNListLength[3], hba[cntl_num]->num_luns);
2802#endif /* CCISS_DEBUG */
2803
2804 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
ddd47442
MM		 2805// for(i=0; i< hba[cntl_num]->num_luns; i++)
2806 for(i=0; i < CISS_MAX_LUN; i++)
1da177e4 2807 {
ddd47442
MM		 2808 if (i < hba[cntl_num]->num_luns){
2809 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3]))
2810 << 24;
2811 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2]))
2812 << 16;
2813 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1]))
2814 << 8;
1da177e4
LT		 2815 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2816
2817 hba[cntl_num]->drv[i].LunID = lunid;
2818
2819
2820#ifdef CCISS_DEBUG
2821 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
ddd47442
MM		 2822 ld_buff->LUN[i][0], ld_buff->LUN[i][1],
2823 ld_buff->LUN[i][2], ld_buff->LUN[i][3],
2824 hba[cntl_num]->drv[i].LunID);
1da177e4
LT		 2825#endif /* CCISS_DEBUG */
2826 cciss_read_capacity(cntl_num, i, size_buff, 0,
2827 &total_size, &block_size);
ddd47442
MM		 2828 cciss_geometry_inquiry(cntl_num, i, 0, total_size,
2829 block_size, inq_buff, &hba[cntl_num]->drv[i]);
2830 } else {
2831 /* initialize raid_level to indicate a free space */
2832 hba[cntl_num]->drv[i].raid_level = -1;
2833 }
1da177e4
LT		 2834 }
2835 kfree(ld_buff);
2836 kfree(size_buff);
2837 kfree(inq_buff);
2838}
2839
2840/* Function to find the first free pointer into our hba[] array */
2841/* Returns -1 if no free entries are left. */
2842static int alloc_cciss_hba(void)
2843{
2844 struct gendisk *disk[NWD];
2845 int i, n;
2846 for (n = 0; n < NWD; n++) {
2847 disk[n] = alloc_disk(1 << NWD_SHIFT);
2848 if (!disk[n])
2849 goto out;
2850 }
2851
2852 for(i=0; i< MAX_CTLR; i++) {
2853 if (!hba[i]) {
2854 ctlr_info_t *p;
2855 p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
2856 if (!p)
2857 goto Enomem;
2858 memset(p, 0, sizeof(ctlr_info_t));
2859 for (n = 0; n < NWD; n++)
2860 p->gendisk[n] = disk[n];
2861 hba[i] = p;
2862 return i;
2863 }
2864 }
2865 printk(KERN_WARNING "cciss: This driver supports a maximum"
2866 " of %d controllers.\n", MAX_CTLR);
2867 goto out;
2868Enomem:
2869 printk(KERN_ERR "cciss: out of memory.\n");
2870out:
2871 while (n--)
2872 put_disk(disk[n]);
2873 return -1;
2874}
2875
2876static void free_hba(int i)
2877{
2878 ctlr_info_t *p = hba[i];
2879 int n;
2880
2881 hba[i] = NULL;
2882 for (n = 0; n < NWD; n++)
2883 put_disk(p->gendisk[n]);
2884 kfree(p);
2885}
2886
2887/*
2888 * This is it. Find all the controllers and register them. I really hate
2889 * stealing all these major device numbers.
2890 * returns the number of block devices registered.
2891 */
2892static int __devinit cciss_init_one(struct pci_dev *pdev,
2893 const struct pci_device_id *ent)
2894{
2895 request_queue_t *q;
2896 int i;
2897 int j;
2898 int rc;
2899
2900 printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
2901 " bus %d dev %d func %d\n",
2902 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
2903 PCI_FUNC(pdev->devfn));
2904 i = alloc_cciss_hba();
2905 if(i < 0)
2906 return (-1);
1f8ef380
MM		 2907
2908 hba[i]->busy_initializing = 1;
2909
1da177e4
LT		 2910 if (cciss_pci_init(hba[i], pdev) != 0)
2911 goto clean1;
2912
2913 sprintf(hba[i]->devname, "cciss%d", i);
2914 hba[i]->ctlr = i;
2915 hba[i]->pdev = pdev;
2916
2917 /* configure PCI DMA stuff */
eb0df996 2918 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
1da177e4 2919 printk("cciss: using DAC cycles\n");
eb0df996 2920 else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
1da177e4
LT		 2921 printk("cciss: not using DAC cycles\n");
2922 else {
2923 printk("cciss: no suitable DMA available\n");
2924 goto clean1;
2925 }
2926
2927 /*
2928 * register with the major number, or get a dynamic major number
2929 * by passing 0 as argument. This is done for greater than
2930 * 8 controller support.
2931 */
2932 if (i < MAX_CTLR_ORIG)
2933 hba[i]->major = MAJOR_NR + i;
2934 rc = register_blkdev(hba[i]->major, hba[i]->devname);
2935 if(rc == -EBUSY || rc == -EINVAL) {
2936 printk(KERN_ERR
2937 "cciss: Unable to get major number %d for %s "
2938 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
2939 goto clean1;
2940 }
2941 else {
2942 if (i >= MAX_CTLR_ORIG)
2943 hba[i]->major = rc;
2944 }
2945
2946 /* make sure the board interrupts are off */
2947 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
2948 if( request_irq(hba[i]->intr, do_cciss_intr,
2949 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
2950 hba[i]->devname, hba[i])) {
2951 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
2952 hba[i]->intr, hba[i]->devname);
2953 goto clean2;
2954 }
2955 hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
2956 hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
2957 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2958 &(hba[i]->cmd_pool_dhandle));
2959 hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
2960 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2961 &(hba[i]->errinfo_pool_dhandle));
2962 if((hba[i]->cmd_pool_bits == NULL)
2963 || (hba[i]->cmd_pool == NULL)
2964 || (hba[i]->errinfo_pool == NULL)) {
2965 printk( KERN_ERR "cciss: out of memory");
2966 goto clean4;
2967 }
2968
2969 spin_lock_init(&hba[i]->lock);
1da177e4
LT		 2970
2971 /* Initialize the pdev driver private data.
2972 have it point to hba[i]. */
2973 pci_set_drvdata(pdev, hba[i]);
2974 /* command and error info recs zeroed out before
2975 they are used */
2976 memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
2977
2978#ifdef CCISS_DEBUG
2979 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
2980#endif /* CCISS_DEBUG */
2981
2982 cciss_getgeometry(i);
2983
2984 cciss_scsi_setup(i);
2985
2986 /* Turn the interrupts on so we can service requests */
2987 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
2988
2989 cciss_procinit(i);
2990
ad2b9312
MM		 2991 for(j=0; j < NWD; j++) { /* mfm */
2992 drive_info_struct *drv = &(hba[i]->drv[j]);
2993 struct gendisk *disk = hba[i]->gendisk[j];
2994
2995 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
2996 if (!q) {
2997 printk(KERN_ERR
2998 "cciss: unable to allocate queue for disk %d\n",
2999 j);
3000 break;
3001 }
3002 drv->queue = q;
3003
3004 q->backing_dev_info.ra_pages = READ_AHEAD;
1da177e4
LT		 3005 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
3006
3007 /* This is a hardware imposed limit. */
3008 blk_queue_max_hw_segments(q, MAXSGENTRIES);
3009
3010 /* This is a limit in the driver and could be eliminated. */
3011 blk_queue_max_phys_segments(q, MAXSGENTRIES);
3012
3013 blk_queue_max_sectors(q, 512);
3014
ad2b9312 3015 q->queuedata = hba[i];
1da177e4
LT		 3016 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
3017 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
3018 disk->major = hba[i]->major;
3019 disk->first_minor = j << NWD_SHIFT;
3020 disk->fops = &cciss_fops;
ad2b9312 3021 disk->queue = q;
1da177e4
LT		 3022 disk->private_data = drv;
3023 /* we must register the controller even if no disks exist */
3024 /* this is for the online array utilities */
3025 if(!drv->heads && j)
3026 continue;
ad2b9312 3027 blk_queue_hardsect_size(q, drv->block_size);
1da177e4
LT		 3028 set_capacity(disk, drv->nr_blocks);
3029 add_disk(disk);
3030 }
ad2b9312 3031
1f8ef380 3032 hba[i]->busy_initializing = 0;
1da177e4
LT		 3033 return(1);
3034
3035clean4:
3036 if(hba[i]->cmd_pool_bits)
3037 kfree(hba[i]->cmd_pool_bits);
3038 if(hba[i]->cmd_pool)
3039 pci_free_consistent(hba[i]->pdev,
3040 NR_CMDS * sizeof(CommandList_struct),
3041 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3042 if(hba[i]->errinfo_pool)
3043 pci_free_consistent(hba[i]->pdev,
3044 NR_CMDS * sizeof( ErrorInfo_struct),
3045 hba[i]->errinfo_pool,
3046 hba[i]->errinfo_pool_dhandle);
3047 free_irq(hba[i]->intr, hba[i]);
3048clean2:
3049 unregister_blkdev(hba[i]->major, hba[i]->devname);
3050clean1:
3051 release_io_mem(hba[i]);
3052 free_hba(i);
1f8ef380 3053 hba[i]->busy_initializing = 0;
1da177e4
LT		 3054 return(-1);
3055}
3056
3057static void __devexit cciss_remove_one (struct pci_dev *pdev)
3058{
3059 ctlr_info_t *tmp_ptr;
3060 int i, j;
3061 char flush_buf[4];
3062 int return_code;
3063
3064 if (pci_get_drvdata(pdev) == NULL)
3065 {
3066 printk( KERN_ERR "cciss: Unable to remove device \n");
3067 return;
3068 }
3069 tmp_ptr = pci_get_drvdata(pdev);
3070 i = tmp_ptr->ctlr;
3071 if (hba[i] == NULL)
3072 {
3073 printk(KERN_ERR "cciss: device appears to "
3074 "already be removed \n");
3075 return;
3076 }
3077 /* Turn board interrupts off and send the flush cache command */
3078 /* sendcmd will turn off interrupt, and send the flush...
3079 * To write all data in the battery backed cache to disks */
3080 memset(flush_buf, 0, 4);
3081 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
3082 TYPE_CMD);
3083 if(return_code != IO_OK)
3084 {
3085 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
3086 i);
3087 }
3088 free_irq(hba[i]->intr, hba[i]);
3089 pci_set_drvdata(pdev, NULL);
3090 iounmap(hba[i]->vaddr);
3091 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
3092 unregister_blkdev(hba[i]->major, hba[i]->devname);
3093 remove_proc_entry(hba[i]->devname, proc_cciss);
3094
3095 /* remove it from the disk list */
3096 for (j = 0; j < NWD; j++) {
3097 struct gendisk *disk = hba[i]->gendisk[j];
6a445d3b 3098 if (disk->flags & GENHD_FL_UP) {
1da177e4 3099 del_gendisk(disk);
6a445d3b
MM		 3100 blk_cleanup_queue(disk->queue);
3101 }
1da177e4
LT		 3102 }
3103
1da177e4
LT		 3104 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
3105 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3106 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
3107 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
3108 kfree(hba[i]->cmd_pool_bits);
3109 release_io_mem(hba[i]);
3110 free_hba(i);
3111}
3112
3113static struct pci_driver cciss_pci_driver = {
3114 .name = "cciss",
3115 .probe = cciss_init_one,
3116 .remove = __devexit_p(cciss_remove_one),
3117 .id_table = cciss_pci_device_id, /* id_table */
3118};
3119
3120/*
3121 * This is it. Register the PCI driver information for the cards we control
3122 * the OS will call our registered routines when it finds one of our cards.
3123 */
3124static int __init cciss_init(void)
3125{
3126 printk(KERN_INFO DRIVER_NAME "\n");
3127
3128 /* Register for our PCI devices */
3129 return pci_module_init(&cciss_pci_driver);
3130}
3131
3132static void __exit cciss_cleanup(void)
3133{
3134 int i;
3135
3136 pci_unregister_driver(&cciss_pci_driver);
3137 /* double check that all controller entrys have been removed */
3138 for (i=0; i< MAX_CTLR; i++)
3139 {
3140 if (hba[i] != NULL)
3141 {
3142 printk(KERN_WARNING "cciss: had to remove"
3143 " controller %d\n", i);
3144 cciss_remove_one(hba[i]->pdev);
3145 }
3146 }
3147 remove_proc_entry("cciss", proc_root_driver);
3148}
3149
33079b21
MM		 3150static void fail_all_cmds(unsigned long ctlr)
3151{
3152 /* If we get here, the board is apparently dead. */
3153 ctlr_info_t *h = hba[ctlr];
3154 CommandList_struct *c;
3155 unsigned long flags;
3156
3157 printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr);
3158 h->alive = 0; /* the controller apparently died... */
3159
3160 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
3161
3162 pci_disable_device(h->pdev); /* Make sure it is really dead. */
3163
3164 /* move everything off the request queue onto the completed queue */
3165 while( (c = h->reqQ) != NULL ) {
3166 removeQ(&(h->reqQ), c);
3167 h->Qdepth--;
3168 addQ (&(h->cmpQ), c);
3169 }
3170
3171 /* Now, fail everything on the completed queue with a HW error */
3172 while( (c = h->cmpQ) != NULL ) {
3173 removeQ(&h->cmpQ, c);
3174 c->err_info->CommandStatus = CMD_HARDWARE_ERR;
3175 if (c->cmd_type == CMD_RWREQ) {
3176 complete_command(h, c, 0);
3177 } else if (c->cmd_type == CMD_IOCTL_PEND)
3178 complete(c->waiting);
3179#ifdef CONFIG_CISS_SCSI_TAPE
3180 else if (c->cmd_type == CMD_SCSI)
3181 complete_scsi_command(c, 0, 0);
3182#endif
3183 }
3184 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
3185 return;
3186}
3187
1da177e4
LT		 3188module_init(cciss_init);
3189module_exit(cciss_cleanup);
Linux kernel - Deliverables
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