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[PATCH] PPC64: Fix boot for some pre-POWER4 systems
[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 */
bb2a37bf
MM		 1733 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
1734 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
1da177e4 1735 pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
bb2a37bf 1736 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
1da177e4
LT		 1737 cmd_free(h, c, 0);
1738 return(return_status);
1739
1740}
1741static void cciss_geometry_inquiry(int ctlr, int logvol,
1742 int withirq, unsigned int total_size,
1743 unsigned int block_size, InquiryData_struct *inq_buff,
1744 drive_info_struct *drv)
1745{
1746 int return_code;
1747 memset(inq_buff, 0, sizeof(InquiryData_struct));
1748 if (withirq)
1749 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1750 inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1751 else
1752 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1753 sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1754 if (return_code == IO_OK) {
1755 if(inq_buff->data_byte[8] == 0xFF) {
1756 printk(KERN_WARNING
1757 "cciss: reading geometry failed, volume "
1758 "does not support reading geometry\n");
1759 drv->block_size = block_size;
1760 drv->nr_blocks = total_size;
1761 drv->heads = 255;
1762 drv->sectors = 32; // Sectors per track
1763 drv->cylinders = total_size / 255 / 32;
1764 } else {
1765 unsigned int t;
1766
1767 drv->block_size = block_size;
1768 drv->nr_blocks = total_size;
1769 drv->heads = inq_buff->data_byte[6];
1770 drv->sectors = inq_buff->data_byte[7];
1771 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1772 drv->cylinders += inq_buff->data_byte[5];
1773 drv->raid_level = inq_buff->data_byte[8];
1774 t = drv->heads * drv->sectors;
1775 if (t > 1) {
1776 drv->cylinders = total_size/t;
1777 }
1778 }
1779 } else { /* Get geometry failed */
1780 printk(KERN_WARNING "cciss: reading geometry failed\n");
1781 }
1782 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
1783 drv->heads, drv->sectors, drv->cylinders);
1784}
1785static void
1786cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1787 int withirq, unsigned int *total_size, unsigned int *block_size)
1788{
1789 int return_code;
1790 memset(buf, 0, sizeof(*buf));
1791 if (withirq)
1792 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1793 ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1794 else
1795 return_code = sendcmd(CCISS_READ_CAPACITY,
1796 ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1797 if (return_code == IO_OK) {
1798 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1799 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1800 } else { /* read capacity command failed */
1801 printk(KERN_WARNING "cciss: read capacity failed\n");
1802 *total_size = 0;
1803 *block_size = BLOCK_SIZE;
1804 }
1805 printk(KERN_INFO " blocks= %u block_size= %d\n",
1806 *total_size, *block_size);
1807 return;
1808}
1809
1da177e4
LT		 1810static int cciss_revalidate(struct gendisk *disk)
1811{
1812 ctlr_info_t *h = get_host(disk);
1813 drive_info_struct *drv = get_drv(disk);
1814 int logvol;
1815 int FOUND=0;
1816 unsigned int block_size;
1817 unsigned int total_size;
1818 ReadCapdata_struct *size_buff = NULL;
1819 InquiryData_struct *inq_buff = NULL;
1820
1821 for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1822 {
1823 if(h->drv[logvol].LunID == drv->LunID) {
1824 FOUND=1;
1825 break;
1826 }
1827 }
1828
1829 if (!FOUND) return 1;
1830
1831 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1832 if (size_buff == NULL)
1833 {
1834 printk(KERN_WARNING "cciss: out of memory\n");
1835 return 1;
1836 }
1837 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1838 if (inq_buff == NULL)
1839 {
1840 printk(KERN_WARNING "cciss: out of memory\n");
1841 kfree(size_buff);
1842 return 1;
1843 }
1844
1845 cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1846 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1847
ad2b9312 1848 blk_queue_hardsect_size(drv->queue, drv->block_size);
1da177e4
LT		 1849 set_capacity(disk, drv->nr_blocks);
1850
1851 kfree(size_buff);
1852 kfree(inq_buff);
1853 return 0;
1854}
1855
1856/*
1857 * Wait polling for a command to complete.
1858 * The memory mapped FIFO is polled for the completion.
1859 * Used only at init time, interrupts from the HBA are disabled.
1860 */
1861static unsigned long pollcomplete(int ctlr)
1862{
1863 unsigned long done;
1864 int i;
1865
1866 /* Wait (up to 20 seconds) for a command to complete */
1867
1868 for (i = 20 * HZ; i > 0; i--) {
1869 done = hba[ctlr]->access.command_completed(hba[ctlr]);
86e84862
NA		 1870 if (done == FIFO_EMPTY)
1871 schedule_timeout_uninterruptible(1);
1872 else
1da177e4
LT		 1873 return (done);
1874 }
1875 /* Invalid address to tell caller we ran out of time */
1876 return 1;
1877}
1878/*
1879 * Send a command to the controller, and wait for it to complete.
1880 * Only used at init time.
1881 */
1882static int sendcmd(
1883 __u8 cmd,
1884 int ctlr,
1885 void *buff,
1886 size_t size,
1887 unsigned int use_unit_num, /* 0: address the controller,
1888 1: address logical volume log_unit,
1889 2: periph device address is scsi3addr */
1890 unsigned int log_unit,
1891 __u8 page_code,
1892 unsigned char *scsi3addr,
1893 int cmd_type)
1894{
1895 CommandList_struct *c;
1896 int i;
1897 unsigned long complete;
1898 ctlr_info_t *info_p= hba[ctlr];
1899 u64bit buff_dma_handle;
1900 int status;
1901
1902 if ((c = cmd_alloc(info_p, 1)) == NULL) {
1903 printk(KERN_WARNING "cciss: unable to get memory");
1904 return(IO_ERROR);
1905 }
1906 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1907 log_unit, page_code, scsi3addr, cmd_type);
1908 if (status != IO_OK) {
1909 cmd_free(info_p, c, 1);
1910 return status;
1911 }
1912resend_cmd1:
1913 /*
1914 * Disable interrupt
1915 */
1916#ifdef CCISS_DEBUG
1917 printk(KERN_DEBUG "cciss: turning intr off\n");
1918#endif /* CCISS_DEBUG */
1919 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1920
1921 /* Make sure there is room in the command FIFO */
1922 /* Actually it should be completely empty at this time. */
1923 for (i = 200000; i > 0; i--)
1924 {
1925 /* if fifo isn't full go */
1926 if (!(info_p->access.fifo_full(info_p)))
1927 {
1928
1929 break;
1930 }
1931 udelay(10);
1932 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
1933 " waiting!\n", ctlr);
1934 }
1935 /*
1936 * Send the cmd
1937 */
1938 info_p->access.submit_command(info_p, c);
1939 complete = pollcomplete(ctlr);
1940
1941#ifdef CCISS_DEBUG
1942 printk(KERN_DEBUG "cciss: command completed\n");
1943#endif /* CCISS_DEBUG */
1944
1945 if (complete != 1) {
1946 if ( (complete & CISS_ERROR_BIT)
1947 && (complete & ~CISS_ERROR_BIT) == c->busaddr)
1948 {
1949 /* if data overrun or underun on Report command
1950 ignore it
1951 */
1952 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
1953 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
1954 (c->Request.CDB[0] == CISS_INQUIRY)) &&
1955 ((c->err_info->CommandStatus ==
1956 CMD_DATA_OVERRUN) ||
1957 (c->err_info->CommandStatus ==
1958 CMD_DATA_UNDERRUN)
1959 ))
1960 {
1961 complete = c->busaddr;
1962 } else {
1963 if (c->err_info->CommandStatus ==
1964 CMD_UNSOLICITED_ABORT) {
1965 printk(KERN_WARNING "cciss%d: "
1966 "unsolicited abort %p\n",
1967 ctlr, c);
1968 if (c->retry_count < MAX_CMD_RETRIES) {
1969 printk(KERN_WARNING
1970 "cciss%d: retrying %p\n",
1971 ctlr, c);
1972 c->retry_count++;
1973 /* erase the old error */
1974 /* information */
1975 memset(c->err_info, 0,
1976 sizeof(ErrorInfo_struct));
1977 goto resend_cmd1;
1978 } else {
1979 printk(KERN_WARNING
1980 "cciss%d: retried %p too "
1981 "many times\n", ctlr, c);
1982 status = IO_ERROR;
1983 goto cleanup1;
1984 }
1985 }
1986 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1987 " Error %x \n", ctlr,
1988 c->err_info->CommandStatus);
1989 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1990 " offensive info\n"
1991 " size %x\n num %x value %x\n", ctlr,
1992 c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
1993 c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
1994 c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
1995 status = IO_ERROR;
1996 goto cleanup1;
1997 }
1998 }
1999 if (complete != c->busaddr) {
2000 printk( KERN_WARNING "cciss cciss%d: SendCmd "
2001 "Invalid command list address returned! (%lx)\n",
2002 ctlr, complete);
2003 status = IO_ERROR;
2004 goto cleanup1;
2005 }
2006 } else {
2007 printk( KERN_WARNING
2008 "cciss cciss%d: SendCmd Timeout out, "
2009 "No command list address returned!\n",
2010 ctlr);
2011 status = IO_ERROR;
2012 }
2013
2014cleanup1:
2015 /* unlock the data buffer from DMA */
bb2a37bf
MM		 2016 buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
2017 buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
1da177e4 2018 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
bb2a37bf 2019 c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
1da177e4
LT		 2020 cmd_free(info_p, c, 1);
2021 return (status);
2022}
2023/*
2024 * Map (physical) PCI mem into (virtual) kernel space
2025 */
2026static void __iomem *remap_pci_mem(ulong base, ulong size)
2027{
2028 ulong page_base = ((ulong) base) & PAGE_MASK;
2029 ulong page_offs = ((ulong) base) - page_base;
2030 void __iomem *page_remapped = ioremap(page_base, page_offs+size);
2031
2032 return page_remapped ? (page_remapped + page_offs) : NULL;
2033}
2034
2035/*
2036 * Takes jobs of the Q and sends them to the hardware, then puts it on
2037 * the Q to wait for completion.
2038 */
2039static void start_io( ctlr_info_t *h)
2040{
2041 CommandList_struct *c;
2042
2043 while(( c = h->reqQ) != NULL )
2044 {
2045 /* can't do anything if fifo is full */
2046 if ((h->access.fifo_full(h))) {
2047 printk(KERN_WARNING "cciss: fifo full\n");
2048 break;
2049 }
2050
2051 /* Get the frist entry from the Request Q */
2052 removeQ(&(h->reqQ), c);
2053 h->Qdepth--;
2054
2055 /* Tell the controller execute command */
2056 h->access.submit_command(h, c);
2057
2058 /* Put job onto the completed Q */
2059 addQ (&(h->cmpQ), c);
2060 }
2061}
2062
2063static inline void complete_buffers(struct bio *bio, int status)
2064{
2065 while (bio) {
2066 struct bio *xbh = bio->bi_next;
2067 int nr_sectors = bio_sectors(bio);
2068
2069 bio->bi_next = NULL;
2070 blk_finished_io(len);
2071 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
2072 bio = xbh;
2073 }
2074
2075}
2076/* Assumes that CCISS_LOCK(h->ctlr) is held. */
2077/* Zeros out the error record and then resends the command back */
2078/* to the controller */
2079static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
2080{
2081 /* erase the old error information */
2082 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
2083
2084 /* add it to software queue and then send it to the controller */
2085 addQ(&(h->reqQ),c);
2086 h->Qdepth++;
2087 if(h->Qdepth > h->maxQsinceinit)
2088 h->maxQsinceinit = h->Qdepth;
2089
2090 start_io(h);
2091}
2092/* checks the status of the job and calls complete buffers to mark all
2093 * buffers for the completed job.
2094 */
2095static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
2096 int timeout)
2097{
2098 int status = 1;
2099 int i;
2100 int retry_cmd = 0;
2101 u64bit temp64;
2102
2103 if (timeout)
2104 status = 0;
2105
2106 if(cmd->err_info->CommandStatus != 0)
2107 { /* an error has occurred */
2108 switch(cmd->err_info->CommandStatus)
2109 {
2110 unsigned char sense_key;
2111 case CMD_TARGET_STATUS:
2112 status = 0;
2113
2114 if( cmd->err_info->ScsiStatus == 0x02)
2115 {
2116 printk(KERN_WARNING "cciss: cmd %p "
2117 "has CHECK CONDITION "
2118 " byte 2 = 0x%x\n", cmd,
2119 cmd->err_info->SenseInfo[2]
2120 );
2121 /* check the sense key */
2122 sense_key = 0xf &
2123 cmd->err_info->SenseInfo[2];
2124 /* no status or recovered error */
2125 if((sense_key == 0x0) ||
2126 (sense_key == 0x1))
2127 {
2128 status = 1;
2129 }
2130 } else
2131 {
2132 printk(KERN_WARNING "cciss: cmd %p "
2133 "has SCSI Status 0x%x\n",
2134 cmd, cmd->err_info->ScsiStatus);
2135 }
2136 break;
2137 case CMD_DATA_UNDERRUN:
2138 printk(KERN_WARNING "cciss: cmd %p has"
2139 " completed with data underrun "
2140 "reported\n", cmd);
2141 break;
2142 case CMD_DATA_OVERRUN:
2143 printk(KERN_WARNING "cciss: cmd %p has"
2144 " completed with data overrun "
2145 "reported\n", cmd);
2146 break;
2147 case CMD_INVALID:
2148 printk(KERN_WARNING "cciss: cmd %p is "
2149 "reported invalid\n", cmd);
2150 status = 0;
2151 break;
2152 case CMD_PROTOCOL_ERR:
2153 printk(KERN_WARNING "cciss: cmd %p has "
2154 "protocol error \n", cmd);
2155 status = 0;
2156 break;
2157 case CMD_HARDWARE_ERR:
2158 printk(KERN_WARNING "cciss: cmd %p had "
2159 " hardware error\n", cmd);
2160 status = 0;
2161 break;
2162 case CMD_CONNECTION_LOST:
2163 printk(KERN_WARNING "cciss: cmd %p had "
2164 "connection lost\n", cmd);
2165 status=0;
2166 break;
2167 case CMD_ABORTED:
2168 printk(KERN_WARNING "cciss: cmd %p was "
2169 "aborted\n", cmd);
2170 status=0;
2171 break;
2172 case CMD_ABORT_FAILED:
2173 printk(KERN_WARNING "cciss: cmd %p reports "
2174 "abort failed\n", cmd);
2175 status=0;
2176 break;
2177 case CMD_UNSOLICITED_ABORT:
2178 printk(KERN_WARNING "cciss%d: unsolicited "
2179 "abort %p\n", h->ctlr, cmd);
2180 if (cmd->retry_count < MAX_CMD_RETRIES) {
2181 retry_cmd=1;
2182 printk(KERN_WARNING
2183 "cciss%d: retrying %p\n",
2184 h->ctlr, cmd);
2185 cmd->retry_count++;
2186 } else
2187 printk(KERN_WARNING
2188 "cciss%d: %p retried too "
2189 "many times\n", h->ctlr, cmd);
2190 status=0;
2191 break;
2192 case CMD_TIMEOUT:
2193 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2194 cmd);
2195 status=0;
2196 break;
2197 default:
2198 printk(KERN_WARNING "cciss: cmd %p returned "
2199 "unknown status %x\n", cmd,
2200 cmd->err_info->CommandStatus);
2201 status=0;
2202 }
2203 }
2204 /* We need to return this command */
2205 if(retry_cmd) {
2206 resend_cciss_cmd(h,cmd);
2207 return;
2208 }
2209 /* command did not need to be retried */
2210 /* unmap the DMA mapping for all the scatter gather elements */
2211 for(i=0; i<cmd->Header.SGList; i++) {
2212 temp64.val32.lower = cmd->SG[i].Addr.lower;
2213 temp64.val32.upper = cmd->SG[i].Addr.upper;
2214 pci_unmap_page(hba[cmd->ctlr]->pdev,
2215 temp64.val, cmd->SG[i].Len,
2216 (cmd->Request.Type.Direction == XFER_READ) ?
2217 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2218 }
2219 complete_buffers(cmd->rq->bio, status);
2220
2221#ifdef CCISS_DEBUG
2222 printk("Done with %p\n", cmd->rq);
2223#endif /* CCISS_DEBUG */
2224
2225 end_that_request_last(cmd->rq);
2226 cmd_free(h,cmd,1);
2227}
2228
2229/*
2230 * Get a request and submit it to the controller.
2231 */
2232static void do_cciss_request(request_queue_t *q)
2233{
2234 ctlr_info_t *h= q->queuedata;
2235 CommandList_struct *c;
2236 int start_blk, seg;
2237 struct request *creq;
2238 u64bit temp64;
2239 struct scatterlist tmp_sg[MAXSGENTRIES];
2240 drive_info_struct *drv;
2241 int i, dir;
2242
2243 /* We call start_io here in case there is a command waiting on the
2244 * queue that has not been sent.
2245 */
2246 if (blk_queue_plugged(q))
2247 goto startio;
2248
2249queue:
2250 creq = elv_next_request(q);
2251 if (!creq)
2252 goto startio;
2253
2254 if (creq->nr_phys_segments > MAXSGENTRIES)
2255 BUG();
2256
2257 if (( c = cmd_alloc(h, 1)) == NULL)
2258 goto full;
2259
2260 blkdev_dequeue_request(creq);
2261
2262 spin_unlock_irq(q->queue_lock);
2263
2264 c->cmd_type = CMD_RWREQ;
2265 c->rq = creq;
2266
2267 /* fill in the request */
2268 drv = creq->rq_disk->private_data;
2269 c->Header.ReplyQueue = 0; // unused in simple mode
33079b21
MM		 2270 /* got command from pool, so use the command block index instead */
2271 /* for direct lookups. */
2272 /* The first 2 bits are reserved for controller error reporting. */
2273 c->Header.Tag.lower = (c->cmdindex << 3);
2274 c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */
1da177e4
LT		 2275 c->Header.LUN.LogDev.VolId= drv->LunID;
2276 c->Header.LUN.LogDev.Mode = 1;
2277 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2278 c->Request.Type.Type = TYPE_CMD; // It is a command.
2279 c->Request.Type.Attribute = ATTR_SIMPLE;
2280 c->Request.Type.Direction =
2281 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
2282 c->Request.Timeout = 0; // Don't time out
2283 c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2284 start_blk = creq->sector;
2285#ifdef CCISS_DEBUG
2286 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2287 (int) creq->nr_sectors);
2288#endif /* CCISS_DEBUG */
2289
2290 seg = blk_rq_map_sg(q, creq, tmp_sg);
2291
2292 /* get the DMA records for the setup */
2293 if (c->Request.Type.Direction == XFER_READ)
2294 dir = PCI_DMA_FROMDEVICE;
2295 else
2296 dir = PCI_DMA_TODEVICE;
2297
2298 for (i=0; i<seg; i++)
2299 {
2300 c->SG[i].Len = tmp_sg[i].length;
2301 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2302 tmp_sg[i].offset, tmp_sg[i].length,
2303 dir);
2304 c->SG[i].Addr.lower = temp64.val32.lower;
2305 c->SG[i].Addr.upper = temp64.val32.upper;
2306 c->SG[i].Ext = 0; // we are not chaining
2307 }
2308 /* track how many SG entries we are using */
2309 if( seg > h->maxSG)
2310 h->maxSG = seg;
2311
2312#ifdef CCISS_DEBUG
2313 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2314#endif /* CCISS_DEBUG */
2315
2316 c->Header.SGList = c->Header.SGTotal = seg;
2317 c->Request.CDB[1]= 0;
2318 c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB
2319 c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2320 c->Request.CDB[4]= (start_blk >> 8) & 0xff;
2321 c->Request.CDB[5]= start_blk & 0xff;
2322 c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2323 c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff;
2324 c->Request.CDB[8]= creq->nr_sectors & 0xff;
2325 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2326
2327 spin_lock_irq(q->queue_lock);
2328
2329 addQ(&(h->reqQ),c);
2330 h->Qdepth++;
2331 if(h->Qdepth > h->maxQsinceinit)
2332 h->maxQsinceinit = h->Qdepth;
2333
2334 goto queue;
2335full:
2336 blk_stop_queue(q);
2337startio:
2338 /* We will already have the driver lock here so not need
2339 * to lock it.
2340 */
2341 start_io(h);
2342}
2343
2344static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2345{
2346 ctlr_info_t *h = dev_id;
2347 CommandList_struct *c;
2348 unsigned long flags;
33079b21 2349 __u32 a, a1, a2;
1da177e4
LT		 2350 int j;
2351 int start_queue = h->next_to_run;
2352
2353 /* Is this interrupt for us? */
2354 if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2355 return IRQ_NONE;
2356
2357 /*
2358 * If there are completed commands in the completion queue,
2359 * we had better do something about it.
2360 */
2361 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2362 while( h->access.intr_pending(h))
2363 {
2364 while((a = h->access.command_completed(h)) != FIFO_EMPTY)
2365 {
2366 a1 = a;
33079b21
MM		 2367 if ((a & 0x04)) {
2368 a2 = (a >> 3);
2369 if (a2 >= NR_CMDS) {
2370 printk(KERN_WARNING "cciss: controller cciss%d failed, stopping.\n", h->ctlr);
2371 fail_all_cmds(h->ctlr);
2372 return IRQ_HANDLED;
2373 }
2374
2375 c = h->cmd_pool + a2;
2376 a = c->busaddr;
2377
2378 } else {
1da177e4 2379 a &= ~3;
33079b21
MM		 2380 if ((c = h->cmpQ) == NULL) {
2381 printk(KERN_WARNING "cciss: Completion of %08x ignored\n", a1);
1da177e4
LT		 2382 continue;
2383 }
2384 while(c->busaddr != a) {
2385 c = c->next;
2386 if (c == h->cmpQ)
2387 break;
2388 }
33079b21 2389 }
1da177e4
LT		 2390 /*
2391 * If we've found the command, take it off the
2392 * completion Q and free it
2393 */
2394 if (c->busaddr == a) {
2395 removeQ(&h->cmpQ, c);
2396 if (c->cmd_type == CMD_RWREQ) {
2397 complete_command(h, c, 0);
2398 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2399 complete(c->waiting);
2400 }
2401# ifdef CONFIG_CISS_SCSI_TAPE
2402 else if (c->cmd_type == CMD_SCSI)
2403 complete_scsi_command(c, 0, a1);
2404# endif
2405 continue;
2406 }
2407 }
2408 }
2409
2410 /* check to see if we have maxed out the number of commands that can
2411 * be placed on the queue. If so then exit. We do this check here
2412 * in case the interrupt we serviced was from an ioctl and did not
2413 * free any new commands.
2414 */
2415 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2416 goto cleanup;
2417
2418 /* We have room on the queue for more commands. Now we need to queue
2419 * them up. We will also keep track of the next queue to run so
2420 * that every queue gets a chance to be started first.
2421 */
ad2b9312
MM		 2422 for (j=0; j < h->highest_lun + 1; j++){
2423 int curr_queue = (start_queue + j) % (h->highest_lun + 1);
1da177e4
LT		 2424 /* make sure the disk has been added and the drive is real
2425 * because this can be called from the middle of init_one.
2426 */
ad2b9312 2427 if(!(h->drv[curr_queue].queue) ||
1da177e4
LT		 2428 !(h->drv[curr_queue].heads))
2429 continue;
2430 blk_start_queue(h->gendisk[curr_queue]->queue);
2431
2432 /* check to see if we have maxed out the number of commands
2433 * that can be placed on the queue.
2434 */
2435 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2436 {
2437 if (curr_queue == start_queue){
ad2b9312 2438 h->next_to_run = (start_queue + 1) % (h->highest_lun + 1);
1da177e4
LT		 2439 goto cleanup;
2440 } else {
2441 h->next_to_run = curr_queue;
2442 goto cleanup;
2443 }
2444 } else {
ad2b9312 2445 curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
1da177e4
LT		 2446 }
2447 }
2448
2449cleanup:
2450 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2451 return IRQ_HANDLED;
2452}
1da177e4
LT		 2453/*
2454 * We cannot read the structure directly, for portablity we must use
2455 * the io functions.
2456 * This is for debug only.
2457 */
2458#ifdef CCISS_DEBUG
2459static void print_cfg_table( CfgTable_struct *tb)
2460{
2461 int i;
2462 char temp_name[17];
2463
2464 printk("Controller Configuration information\n");
2465 printk("------------------------------------\n");
2466 for(i=0;i<4;i++)
2467 temp_name[i] = readb(&(tb->Signature[i]));
2468 temp_name[4]='\0';
2469 printk(" Signature = %s\n", temp_name);
2470 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2471 printk(" Transport methods supported = 0x%x\n",
2472 readl(&(tb-> TransportSupport)));
2473 printk(" Transport methods active = 0x%x\n",
2474 readl(&(tb->TransportActive)));
2475 printk(" Requested transport Method = 0x%x\n",
2476 readl(&(tb->HostWrite.TransportRequest)));
2477 printk(" Coalese Interrupt Delay = 0x%x\n",
2478 readl(&(tb->HostWrite.CoalIntDelay)));
2479 printk(" Coalese Interrupt Count = 0x%x\n",
2480 readl(&(tb->HostWrite.CoalIntCount)));
2481 printk(" Max outstanding commands = 0x%d\n",
2482 readl(&(tb->CmdsOutMax)));
2483 printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2484 for(i=0;i<16;i++)
2485 temp_name[i] = readb(&(tb->ServerName[i]));
2486 temp_name[16] = '\0';
2487 printk(" Server Name = %s\n", temp_name);
2488 printk(" Heartbeat Counter = 0x%x\n\n\n",
2489 readl(&(tb->HeartBeat)));
2490}
2491#endif /* CCISS_DEBUG */
2492
2493static void release_io_mem(ctlr_info_t *c)
2494{
2495 /* if IO mem was not protected do nothing */
2496 if( c->io_mem_addr == 0)
2497 return;
2498 release_region(c->io_mem_addr, c->io_mem_length);
2499 c->io_mem_addr = 0;
2500 c->io_mem_length = 0;
2501}
2502
2503static int find_PCI_BAR_index(struct pci_dev *pdev,
2504 unsigned long pci_bar_addr)
2505{
2506 int i, offset, mem_type, bar_type;
2507 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2508 return 0;
2509 offset = 0;
2510 for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2511 bar_type = pci_resource_flags(pdev, i) &
2512 PCI_BASE_ADDRESS_SPACE;
2513 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2514 offset += 4;
2515 else {
2516 mem_type = pci_resource_flags(pdev, i) &
2517 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2518 switch (mem_type) {
2519 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2520 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2521 offset += 4; /* 32 bit */
2522 break;
2523 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2524 offset += 8;
2525 break;
2526 default: /* reserved in PCI 2.2 */
2527 printk(KERN_WARNING "Base address is invalid\n");
2528 return -1;
2529 break;
2530 }
2531 }
2532 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2533 return i+1;
2534 }
2535 return -1;
2536}
2537
2538static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2539{
2540 ushort subsystem_vendor_id, subsystem_device_id, command;
2541 __u32 board_id, scratchpad = 0;
2542 __u64 cfg_offset;
2543 __u32 cfg_base_addr;
2544 __u64 cfg_base_addr_index;
2545 int i;
2546
2547 /* check to see if controller has been disabled */
2548 /* BEFORE trying to enable it */
2549 (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2550 if(!(command & 0x02))
2551 {
2552 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2553 return(-1);
2554 }
2555
2556 if (pci_enable_device(pdev))
2557 {
2558 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2559 return( -1);
2560 }
1da177e4
LT		 2561
2562 subsystem_vendor_id = pdev->subsystem_vendor;
2563 subsystem_device_id = pdev->subsystem_device;
2564 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2565 subsystem_vendor_id);
2566
2567 /* search for our IO range so we can protect it */
2568 for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2569 {
2570 /* is this an IO range */
2571 if( pci_resource_flags(pdev, i) & 0x01 ) {
2572 c->io_mem_addr = pci_resource_start(pdev, i);
2573 c->io_mem_length = pci_resource_end(pdev, i) -
2574 pci_resource_start(pdev, i) +1;
2575#ifdef CCISS_DEBUG
2576 printk("IO value found base_addr[%d] %lx %lx\n", i,
2577 c->io_mem_addr, c->io_mem_length);
2578#endif /* CCISS_DEBUG */
2579 /* register the IO range */
2580 if(!request_region( c->io_mem_addr,
2581 c->io_mem_length, "cciss"))
2582 {
2583 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2584 c->io_mem_addr, c->io_mem_length);
2585 c->io_mem_addr= 0;
2586 c->io_mem_length = 0;
2587 }
2588 break;
2589 }
2590 }
2591
2592#ifdef CCISS_DEBUG
2593 printk("command = %x\n", command);
2594 printk("irq = %x\n", pdev->irq);
2595 printk("board_id = %x\n", board_id);
2596#endif /* CCISS_DEBUG */
2597
2598 c->intr = pdev->irq;
2599
2600 /*
2601 * Memory base addr is first addr , the second points to the config
2602 * table
2603 */
2604
2605 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2606#ifdef CCISS_DEBUG
2607 printk("address 0 = %x\n", c->paddr);
2608#endif /* CCISS_DEBUG */
2609 c->vaddr = remap_pci_mem(c->paddr, 200);
2610
2611 /* Wait for the board to become ready. (PCI hotplug needs this.)
2612 * We poll for up to 120 secs, once per 100ms. */
2613 for (i=0; i < 1200; i++) {
2614 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2615 if (scratchpad == CCISS_FIRMWARE_READY)
2616 break;
2617 set_current_state(TASK_INTERRUPTIBLE);
2618 schedule_timeout(HZ / 10); /* wait 100ms */
2619 }
2620 if (scratchpad != CCISS_FIRMWARE_READY) {
2621 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2622 return -1;
2623 }
2624
2625 /* get the address index number */
2626 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2627 cfg_base_addr &= (__u32) 0x0000ffff;
2628#ifdef CCISS_DEBUG
2629 printk("cfg base address = %x\n", cfg_base_addr);
2630#endif /* CCISS_DEBUG */
2631 cfg_base_addr_index =
2632 find_PCI_BAR_index(pdev, cfg_base_addr);
2633#ifdef CCISS_DEBUG
2634 printk("cfg base address index = %x\n", cfg_base_addr_index);
2635#endif /* CCISS_DEBUG */
2636 if (cfg_base_addr_index == -1) {
2637 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2638 release_io_mem(c);
2639 return -1;
2640 }
2641
2642 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2643#ifdef CCISS_DEBUG
2644 printk("cfg offset = %x\n", cfg_offset);
2645#endif /* CCISS_DEBUG */
2646 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
2647 cfg_base_addr_index) + cfg_offset,
2648 sizeof(CfgTable_struct));
2649 c->board_id = board_id;
2650
2651#ifdef CCISS_DEBUG
2652 print_cfg_table(c->cfgtable);
2653#endif /* CCISS_DEBUG */
2654
2655 for(i=0; i<NR_PRODUCTS; i++) {
2656 if (board_id == products[i].board_id) {
2657 c->product_name = products[i].product_name;
2658 c->access = *(products[i].access);
2659 break;
2660 }
2661 }
2662 if (i == NR_PRODUCTS) {
2663 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2664 " to access the Smart Array controller %08lx\n",
2665 (unsigned long)board_id);
2666 return -1;
2667 }
2668 if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
2669 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2670 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2671 (readb(&c->cfgtable->Signature[3]) != 'S') )
2672 {
2673 printk("Does not appear to be a valid CISS config table\n");
2674 return -1;
2675 }
2676
2677#ifdef CONFIG_X86
2678{
2679 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2680 __u32 prefetch;
2681 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2682 prefetch |= 0x100;
2683 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2684}
2685#endif
2686
2687#ifdef CCISS_DEBUG
2688 printk("Trying to put board into Simple mode\n");
2689#endif /* CCISS_DEBUG */
2690 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2691 /* Update the field, and then ring the doorbell */
2692 writel( CFGTBL_Trans_Simple,
2693 &(c->cfgtable->HostWrite.TransportRequest));
2694 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2695
2696 /* under certain very rare conditions, this can take awhile.
2697 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2698 * as we enter this code.) */
2699 for(i=0;i<MAX_CONFIG_WAIT;i++) {
2700 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2701 break;
2702 /* delay and try again */
2703 set_current_state(TASK_INTERRUPTIBLE);
2704 schedule_timeout(10);
2705 }
2706
2707#ifdef CCISS_DEBUG
2708 printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2709#endif /* CCISS_DEBUG */
2710#ifdef CCISS_DEBUG
2711 print_cfg_table(c->cfgtable);
2712#endif /* CCISS_DEBUG */
2713
2714 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2715 {
2716 printk(KERN_WARNING "cciss: unable to get board into"
2717 " simple mode\n");
2718 return -1;
2719 }
2720 return 0;
2721
2722}
2723
2724/*
2725 * Gets information about the local volumes attached to the controller.
2726 */
2727static void cciss_getgeometry(int cntl_num)
2728{
2729 ReportLunData_struct *ld_buff;
2730 ReadCapdata_struct *size_buff;
2731 InquiryData_struct *inq_buff;
2732 int return_code;
2733 int i;
2734 int listlength = 0;
2735 __u32 lunid = 0;
2736 int block_size;
2737 int total_size;
2738
2739 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2740 if (ld_buff == NULL)
2741 {
2742 printk(KERN_ERR "cciss: out of memory\n");
2743 return;
2744 }
2745 memset(ld_buff, 0, sizeof(ReportLunData_struct));
2746 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2747 if (size_buff == NULL)
2748 {
2749 printk(KERN_ERR "cciss: out of memory\n");
2750 kfree(ld_buff);
2751 return;
2752 }
2753 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2754 if (inq_buff == NULL)
2755 {
2756 printk(KERN_ERR "cciss: out of memory\n");
2757 kfree(ld_buff);
2758 kfree(size_buff);
2759 return;
2760 }
2761 /* Get the firmware version */
2762 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2763 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2764 if (return_code == IO_OK)
2765 {
2766 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2767 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2768 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2769 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2770 } else /* send command failed */
2771 {
2772 printk(KERN_WARNING "cciss: unable to determine firmware"
2773 " version of controller\n");
2774 }
2775 /* Get the number of logical volumes */
2776 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2777 sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2778
2779 if( return_code == IO_OK)
2780 {
2781#ifdef CCISS_DEBUG
2782 printk("LUN Data\n--------------------------\n");
2783#endif /* CCISS_DEBUG */
2784
2785 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2786 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2787 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
2788 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2789 } else /* reading number of logical volumes failed */
2790 {
2791 printk(KERN_WARNING "cciss: report logical volume"
2792 " command failed\n");
2793 listlength = 0;
2794 }
2795 hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2796 if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2797 {
2798 printk(KERN_ERR "ciss: only %d number of logical volumes supported\n",
2799 CISS_MAX_LUN);
2800 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2801 }
2802#ifdef CCISS_DEBUG
2803 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2804 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2805 ld_buff->LUNListLength[3], hba[cntl_num]->num_luns);
2806#endif /* CCISS_DEBUG */
2807
2808 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
ddd47442
MM		 2809// for(i=0; i< hba[cntl_num]->num_luns; i++)
2810 for(i=0; i < CISS_MAX_LUN; i++)
1da177e4 2811 {
ddd47442
MM		 2812 if (i < hba[cntl_num]->num_luns){
2813 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3]))
2814 << 24;
2815 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2]))
2816 << 16;
2817 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1]))
2818 << 8;
1da177e4
LT		 2819 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2820
2821 hba[cntl_num]->drv[i].LunID = lunid;
2822
2823
2824#ifdef CCISS_DEBUG
2825 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
ddd47442
MM		 2826 ld_buff->LUN[i][0], ld_buff->LUN[i][1],
2827 ld_buff->LUN[i][2], ld_buff->LUN[i][3],
2828 hba[cntl_num]->drv[i].LunID);
1da177e4
LT		 2829#endif /* CCISS_DEBUG */
2830 cciss_read_capacity(cntl_num, i, size_buff, 0,
2831 &total_size, &block_size);
ddd47442
MM		 2832 cciss_geometry_inquiry(cntl_num, i, 0, total_size,
2833 block_size, inq_buff, &hba[cntl_num]->drv[i]);
2834 } else {
2835 /* initialize raid_level to indicate a free space */
2836 hba[cntl_num]->drv[i].raid_level = -1;
2837 }
1da177e4
LT		 2838 }
2839 kfree(ld_buff);
2840 kfree(size_buff);
2841 kfree(inq_buff);
2842}
2843
2844/* Function to find the first free pointer into our hba[] array */
2845/* Returns -1 if no free entries are left. */
2846static int alloc_cciss_hba(void)
2847{
2848 struct gendisk *disk[NWD];
2849 int i, n;
2850 for (n = 0; n < NWD; n++) {
2851 disk[n] = alloc_disk(1 << NWD_SHIFT);
2852 if (!disk[n])
2853 goto out;
2854 }
2855
2856 for(i=0; i< MAX_CTLR; i++) {
2857 if (!hba[i]) {
2858 ctlr_info_t *p;
2859 p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
2860 if (!p)
2861 goto Enomem;
2862 memset(p, 0, sizeof(ctlr_info_t));
2863 for (n = 0; n < NWD; n++)
2864 p->gendisk[n] = disk[n];
2865 hba[i] = p;
2866 return i;
2867 }
2868 }
2869 printk(KERN_WARNING "cciss: This driver supports a maximum"
2870 " of %d controllers.\n", MAX_CTLR);
2871 goto out;
2872Enomem:
2873 printk(KERN_ERR "cciss: out of memory.\n");
2874out:
2875 while (n--)
2876 put_disk(disk[n]);
2877 return -1;
2878}
2879
2880static void free_hba(int i)
2881{
2882 ctlr_info_t *p = hba[i];
2883 int n;
2884
2885 hba[i] = NULL;
2886 for (n = 0; n < NWD; n++)
2887 put_disk(p->gendisk[n]);
2888 kfree(p);
2889}
2890
2891/*
2892 * This is it. Find all the controllers and register them. I really hate
2893 * stealing all these major device numbers.
2894 * returns the number of block devices registered.
2895 */
2896static int __devinit cciss_init_one(struct pci_dev *pdev,
2897 const struct pci_device_id *ent)
2898{
2899 request_queue_t *q;
2900 int i;
2901 int j;
2902 int rc;
2903
2904 printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
2905 " bus %d dev %d func %d\n",
2906 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
2907 PCI_FUNC(pdev->devfn));
2908 i = alloc_cciss_hba();
2909 if(i < 0)
2910 return (-1);
1f8ef380
MM		 2911
2912 hba[i]->busy_initializing = 1;
2913
1da177e4
LT		 2914 if (cciss_pci_init(hba[i], pdev) != 0)
2915 goto clean1;
2916
2917 sprintf(hba[i]->devname, "cciss%d", i);
2918 hba[i]->ctlr = i;
2919 hba[i]->pdev = pdev;
2920
2921 /* configure PCI DMA stuff */
eb0df996 2922 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
1da177e4 2923 printk("cciss: using DAC cycles\n");
eb0df996 2924 else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
1da177e4
LT		 2925 printk("cciss: not using DAC cycles\n");
2926 else {
2927 printk("cciss: no suitable DMA available\n");
2928 goto clean1;
2929 }
2930
2931 /*
2932 * register with the major number, or get a dynamic major number
2933 * by passing 0 as argument. This is done for greater than
2934 * 8 controller support.
2935 */
2936 if (i < MAX_CTLR_ORIG)
2937 hba[i]->major = MAJOR_NR + i;
2938 rc = register_blkdev(hba[i]->major, hba[i]->devname);
2939 if(rc == -EBUSY || rc == -EINVAL) {
2940 printk(KERN_ERR
2941 "cciss: Unable to get major number %d for %s "
2942 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
2943 goto clean1;
2944 }
2945 else {
2946 if (i >= MAX_CTLR_ORIG)
2947 hba[i]->major = rc;
2948 }
2949
2950 /* make sure the board interrupts are off */
2951 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
2952 if( request_irq(hba[i]->intr, do_cciss_intr,
2953 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
2954 hba[i]->devname, hba[i])) {
2955 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
2956 hba[i]->intr, hba[i]->devname);
2957 goto clean2;
2958 }
2959 hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
2960 hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
2961 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2962 &(hba[i]->cmd_pool_dhandle));
2963 hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
2964 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2965 &(hba[i]->errinfo_pool_dhandle));
2966 if((hba[i]->cmd_pool_bits == NULL)
2967 || (hba[i]->cmd_pool == NULL)
2968 || (hba[i]->errinfo_pool == NULL)) {
2969 printk( KERN_ERR "cciss: out of memory");
2970 goto clean4;
2971 }
2972
2973 spin_lock_init(&hba[i]->lock);
1da177e4
LT		 2974
2975 /* Initialize the pdev driver private data.
2976 have it point to hba[i]. */
2977 pci_set_drvdata(pdev, hba[i]);
2978 /* command and error info recs zeroed out before
2979 they are used */
2980 memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
2981
2982#ifdef CCISS_DEBUG
2983 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
2984#endif /* CCISS_DEBUG */
2985
2986 cciss_getgeometry(i);
2987
2988 cciss_scsi_setup(i);
2989
2990 /* Turn the interrupts on so we can service requests */
2991 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
2992
2993 cciss_procinit(i);
2994
ad2b9312
MM		 2995 for(j=0; j < NWD; j++) { /* mfm */
2996 drive_info_struct *drv = &(hba[i]->drv[j]);
2997 struct gendisk *disk = hba[i]->gendisk[j];
2998
2999 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
3000 if (!q) {
3001 printk(KERN_ERR
3002 "cciss: unable to allocate queue for disk %d\n",
3003 j);
3004 break;
3005 }
3006 drv->queue = q;
3007
3008 q->backing_dev_info.ra_pages = READ_AHEAD;
1da177e4
LT		 3009 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
3010
3011 /* This is a hardware imposed limit. */
3012 blk_queue_max_hw_segments(q, MAXSGENTRIES);
3013
3014 /* This is a limit in the driver and could be eliminated. */
3015 blk_queue_max_phys_segments(q, MAXSGENTRIES);
3016
3017 blk_queue_max_sectors(q, 512);
3018
ad2b9312 3019 q->queuedata = hba[i];
1da177e4
LT		 3020 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
3021 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
3022 disk->major = hba[i]->major;
3023 disk->first_minor = j << NWD_SHIFT;
3024 disk->fops = &cciss_fops;
ad2b9312 3025 disk->queue = q;
1da177e4
LT		 3026 disk->private_data = drv;
3027 /* we must register the controller even if no disks exist */
3028 /* this is for the online array utilities */
3029 if(!drv->heads && j)
3030 continue;
ad2b9312 3031 blk_queue_hardsect_size(q, drv->block_size);
1da177e4
LT		 3032 set_capacity(disk, drv->nr_blocks);
3033 add_disk(disk);
3034 }
ad2b9312 3035
1f8ef380 3036 hba[i]->busy_initializing = 0;
1da177e4
LT		 3037 return(1);
3038
3039clean4:
3040 if(hba[i]->cmd_pool_bits)
3041 kfree(hba[i]->cmd_pool_bits);
3042 if(hba[i]->cmd_pool)
3043 pci_free_consistent(hba[i]->pdev,
3044 NR_CMDS * sizeof(CommandList_struct),
3045 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3046 if(hba[i]->errinfo_pool)
3047 pci_free_consistent(hba[i]->pdev,
3048 NR_CMDS * sizeof( ErrorInfo_struct),
3049 hba[i]->errinfo_pool,
3050 hba[i]->errinfo_pool_dhandle);
3051 free_irq(hba[i]->intr, hba[i]);
3052clean2:
3053 unregister_blkdev(hba[i]->major, hba[i]->devname);
3054clean1:
3055 release_io_mem(hba[i]);
3056 free_hba(i);
1f8ef380 3057 hba[i]->busy_initializing = 0;
1da177e4
LT		 3058 return(-1);
3059}
3060
3061static void __devexit cciss_remove_one (struct pci_dev *pdev)
3062{
3063 ctlr_info_t *tmp_ptr;
3064 int i, j;
3065 char flush_buf[4];
3066 int return_code;
3067
3068 if (pci_get_drvdata(pdev) == NULL)
3069 {
3070 printk( KERN_ERR "cciss: Unable to remove device \n");
3071 return;
3072 }
3073 tmp_ptr = pci_get_drvdata(pdev);
3074 i = tmp_ptr->ctlr;
3075 if (hba[i] == NULL)
3076 {
3077 printk(KERN_ERR "cciss: device appears to "
3078 "already be removed \n");
3079 return;
3080 }
3081 /* Turn board interrupts off and send the flush cache command */
3082 /* sendcmd will turn off interrupt, and send the flush...
3083 * To write all data in the battery backed cache to disks */
3084 memset(flush_buf, 0, 4);
3085 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
3086 TYPE_CMD);
3087 if(return_code != IO_OK)
3088 {
3089 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
3090 i);
3091 }
3092 free_irq(hba[i]->intr, hba[i]);
3093 pci_set_drvdata(pdev, NULL);
3094 iounmap(hba[i]->vaddr);
3095 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
3096 unregister_blkdev(hba[i]->major, hba[i]->devname);
3097 remove_proc_entry(hba[i]->devname, proc_cciss);
3098
3099 /* remove it from the disk list */
3100 for (j = 0; j < NWD; j++) {
3101 struct gendisk *disk = hba[i]->gendisk[j];
6a445d3b 3102 if (disk->flags & GENHD_FL_UP) {
1da177e4 3103 del_gendisk(disk);
6a445d3b
MM		 3104 blk_cleanup_queue(disk->queue);
3105 }
1da177e4
LT		 3106 }
3107
1da177e4
LT		 3108 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
3109 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3110 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
3111 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
3112 kfree(hba[i]->cmd_pool_bits);
3113 release_io_mem(hba[i]);
3114 free_hba(i);
3115}
3116
3117static struct pci_driver cciss_pci_driver = {
3118 .name = "cciss",
3119 .probe = cciss_init_one,
3120 .remove = __devexit_p(cciss_remove_one),
3121 .id_table = cciss_pci_device_id, /* id_table */
3122};
3123
3124/*
3125 * This is it. Register the PCI driver information for the cards we control
3126 * the OS will call our registered routines when it finds one of our cards.
3127 */
3128static int __init cciss_init(void)
3129{
3130 printk(KERN_INFO DRIVER_NAME "\n");
3131
3132 /* Register for our PCI devices */
3133 return pci_module_init(&cciss_pci_driver);
3134}
3135
3136static void __exit cciss_cleanup(void)
3137{
3138 int i;
3139
3140 pci_unregister_driver(&cciss_pci_driver);
3141 /* double check that all controller entrys have been removed */
3142 for (i=0; i< MAX_CTLR; i++)
3143 {
3144 if (hba[i] != NULL)
3145 {
3146 printk(KERN_WARNING "cciss: had to remove"
3147 " controller %d\n", i);
3148 cciss_remove_one(hba[i]->pdev);
3149 }
3150 }
3151 remove_proc_entry("cciss", proc_root_driver);
3152}
3153
33079b21
MM		 3154static void fail_all_cmds(unsigned long ctlr)
3155{
3156 /* If we get here, the board is apparently dead. */
3157 ctlr_info_t *h = hba[ctlr];
3158 CommandList_struct *c;
3159 unsigned long flags;
3160
3161 printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr);
3162 h->alive = 0; /* the controller apparently died... */
3163
3164 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
3165
3166 pci_disable_device(h->pdev); /* Make sure it is really dead. */
3167
3168 /* move everything off the request queue onto the completed queue */
3169 while( (c = h->reqQ) != NULL ) {
3170 removeQ(&(h->reqQ), c);
3171 h->Qdepth--;
3172 addQ (&(h->cmpQ), c);
3173 }
3174
3175 /* Now, fail everything on the completed queue with a HW error */
3176 while( (c = h->cmpQ) != NULL ) {
3177 removeQ(&h->cmpQ, c);
3178 c->err_info->CommandStatus = CMD_HARDWARE_ERR;
3179 if (c->cmd_type == CMD_RWREQ) {
3180 complete_command(h, c, 0);
3181 } else if (c->cmd_type == CMD_IOCTL_PEND)
3182 complete(c->waiting);
3183#ifdef CONFIG_CISS_SCSI_TAPE
3184 else if (c->cmd_type == CMD_SCSI)
3185 complete_scsi_command(c, 0, 0);
3186#endif
3187 }
3188 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
3189 return;
3190}
3191
1da177e4
LT		 3192module_init(cciss_init);
3193module_exit(cciss_cleanup);
Linux kernel - Deliverables
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