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[PATCH] w1: cleanups.
[linux-2.6/verdex.git] / drivers / block / cciss.c
blobabde27027c06b5cddd2dd873267e80b7a27dda51
1 /*
2 * Disk Array driver for HP SA 5xxx and 6xxx Controllers
3 * Copyright 2000, 2002 Hewlett-Packard Development Company, L.P.
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
44 #include <linux/dma-mapping.h>
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))
50 #define DRIVER_NAME "HP CISS Driver (v 2.6.6)"
51 #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,6)
52
53 /* Embedded module documentation macros - see modules.h */
54 MODULE_AUTHOR("Hewlett-Packard Company");
55 MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.6");
56 MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
57 " SA6i P600 P800 E400");
58 MODULE_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 */
65 static const struct pci_device_id cciss_pci_device_id[] = {
66 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS,
67 0x0E11, 0x4070, 0, 0, 0},
68 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
69 0x0E11, 0x4080, 0, 0, 0},
70 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
71 0x0E11, 0x4082, 0, 0, 0},
72 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
73 0x0E11, 0x4083, 0, 0, 0},
74 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
75 0x0E11, 0x409A, 0, 0, 0},
76 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
77 0x0E11, 0x409B, 0, 0, 0},
78 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
79 0x0E11, 0x409C, 0, 0, 0},
80 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
81 0x0E11, 0x409D, 0, 0, 0},
82 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
83 0x0E11, 0x4091, 0, 0, 0},
84 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA,
85 0x103C, 0x3225, 0, 0, 0},
86 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSB,
87 0x103c, 0x3223, 0, 0, 0},
88 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSB,
89 0x103c, 0x3231, 0, 0, 0},
90 {0,}
91 };
92 MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
93
94 #define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
95
96 /* board_id = Subsystem Device ID & Vendor ID
97 * product = Marketing Name for the board
98 * access = Address of the struct of function pointers
99 */
100 static struct board_type products[] = {
101 { 0x40700E11, "Smart Array 5300", &SA5_access },
102 { 0x40800E11, "Smart Array 5i", &SA5B_access},
103 { 0x40820E11, "Smart Array 532", &SA5B_access},
104 { 0x40830E11, "Smart Array 5312", &SA5B_access},
105 { 0x409A0E11, "Smart Array 641", &SA5_access},
106 { 0x409B0E11, "Smart Array 642", &SA5_access},
107 { 0x409C0E11, "Smart Array 6400", &SA5_access},
108 { 0x409D0E11, "Smart Array 6400 EM", &SA5_access},
109 { 0x40910E11, "Smart Array 6i", &SA5_access},
110 { 0x3225103C, "Smart Array P600", &SA5_access},
111 { 0x3223103C, "Smart Array P800", &SA5_access},
112 { 0x3231103C, "Smart Array E400", &SA5_access},
113 };
114
115 /* How long to wait (in millesconds) for board to go into simple mode */
116 #define MAX_CONFIG_WAIT 30000
117 #define MAX_IOCTL_CONFIG_WAIT 1000
118
119 /*define how many times we will try a command because of bus resets */
120 #define MAX_CMD_RETRIES 3
121
122 #define READ_AHEAD 1024
123 #define NR_CMDS 384 /* #commands that can be outstanding */
124 #define MAX_CTLR 32
125
126 /* Originally cciss driver only supports 8 major numbers */
127 #define MAX_CTLR_ORIG 8
128
129
130 static ctlr_info_t *hba[MAX_CTLR];
131
132 static void do_cciss_request(request_queue_t *q);
133 static int cciss_open(struct inode *inode, struct file *filep);
134 static int cciss_release(struct inode *inode, struct file *filep);
135 static int cciss_ioctl(struct inode *inode, struct file *filep,
136 unsigned int cmd, unsigned long arg);
137
138 static int revalidate_allvol(ctlr_info_t *host);
139 static int cciss_revalidate(struct gendisk *disk);
140 static int deregister_disk(struct gendisk *disk);
141 static int register_new_disk(ctlr_info_t *h);
142
143 static void cciss_getgeometry(int cntl_num);
144
145 static void start_io( ctlr_info_t *h);
146 static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
147 unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
148 unsigned char *scsi3addr, int cmd_type);
149
150 #ifdef CONFIG_PROC_FS
151 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
152 int length, int *eof, void *data);
153 static void cciss_procinit(int i);
154 #else
155 static void cciss_procinit(int i) {}
156 #endif /* CONFIG_PROC_FS */
157
158 #ifdef CONFIG_COMPAT
159 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
160 #endif
161
162 static struct block_device_operations cciss_fops = {
163 .owner = THIS_MODULE,
164 .open = cciss_open,
165 .release = cciss_release,
166 .ioctl = cciss_ioctl,
167 #ifdef CONFIG_COMPAT
168 .compat_ioctl = cciss_compat_ioctl,
169 #endif
170 .revalidate_disk= cciss_revalidate,
171 };
172
173 /*
174 * Enqueuing and dequeuing functions for cmdlists.
175 */
176 static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
177 {
178 if (*Qptr == NULL) {
179 *Qptr = c;
180 c->next = c->prev = c;
181 } else {
182 c->prev = (*Qptr)->prev;
183 c->next = (*Qptr);
184 (*Qptr)->prev->next = c;
185 (*Qptr)->prev = c;
186 }
187 }
188
189 static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
190 CommandList_struct *c)
191 {
192 if (c && c->next != c) {
193 if (*Qptr == c) *Qptr = c->next;
194 c->prev->next = c->next;
195 c->next->prev = c->prev;
196 } else {
197 *Qptr = NULL;
198 }
199 return c;
200 }
201
202 #include "cciss_scsi.c" /* For SCSI tape support */
203
204 #ifdef CONFIG_PROC_FS
205
206 /*
207 * Report information about this controller.
208 */
209 #define ENG_GIG 1000000000
210 #define ENG_GIG_FACTOR (ENG_GIG/512)
211 #define RAID_UNKNOWN 6
212 static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
213 "UNKNOWN"};
214
215 static struct proc_dir_entry *proc_cciss;
216
217 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
218 int length, int *eof, void *data)
219 {
220 off_t pos = 0;
221 off_t len = 0;
222 int size, i, ctlr;
223 ctlr_info_t *h = (ctlr_info_t*)data;
224 drive_info_struct *drv;
225 unsigned long flags;
226 sector_t vol_sz, vol_sz_frac;
227
228 ctlr = h->ctlr;
229
230 /* prevent displaying bogus info during configuration
231 * or deconfiguration of a logical volume
232 */
233 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
234 if (h->busy_configuring) {
235 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
236 return -EBUSY;
237 }
238 h->busy_configuring = 1;
239 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
240
241 size = sprintf(buffer, "%s: HP %s Controller\n"
242 "Board ID: 0x%08lx\n"
243 "Firmware Version: %c%c%c%c\n"
244 "IRQ: %d\n"
245 "Logical drives: %d\n"
246 "Current Q depth: %d\n"
247 "Current # commands on controller: %d\n"
248 "Max Q depth since init: %d\n"
249 "Max # commands on controller since init: %d\n"
250 "Max SG entries since init: %d\n\n",
251 h->devname,
252 h->product_name,
253 (unsigned long)h->board_id,
254 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
255 (unsigned int)h->intr,
256 h->num_luns,
257 h->Qdepth, h->commands_outstanding,
258 h->maxQsinceinit, h->max_outstanding, h->maxSG);
259
260 pos += size; len += size;
261 cciss_proc_tape_report(ctlr, buffer, &pos, &len);
262 for(i=0; i<=h->highest_lun; i++) {
263
264 drv = &h->drv[i];
265 if (drv->block_size == 0)
266 continue;
267
268 vol_sz = drv->nr_blocks;
269 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
270 vol_sz_frac *= 100;
271 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
272
273 if (drv->raid_level > 5)
274 drv->raid_level = RAID_UNKNOWN;
275 size = sprintf(buffer+len, "cciss/c%dd%d:"
276 "\t%4u.%02uGB\tRAID %s\n",
277 ctlr, i, (int)vol_sz, (int)vol_sz_frac,
278 raid_label[drv->raid_level]);
279 pos += size; len += size;
280 }
281
282 *eof = 1;
283 *start = buffer+offset;
284 len -= offset;
285 if (len>length)
286 len = length;
287 h->busy_configuring = 0;
288 return len;
289 }
290
291 static int
292 cciss_proc_write(struct file *file, const char __user *buffer,
293 unsigned long count, void *data)
294 {
295 unsigned char cmd[80];
296 int len;
297 #ifdef CONFIG_CISS_SCSI_TAPE
298 ctlr_info_t *h = (ctlr_info_t *) data;
299 int rc;
300 #endif
301
302 if (count > sizeof(cmd)-1) return -EINVAL;
303 if (copy_from_user(cmd, buffer, count)) return -EFAULT;
304 cmd[count] = '\0';
305 len = strlen(cmd); // above 3 lines ensure safety
306 if (len && cmd[len-1] == '\n')
307 cmd[--len] = '\0';
308 # ifdef CONFIG_CISS_SCSI_TAPE
309 if (strcmp("engage scsi", cmd)==0) {
310 rc = cciss_engage_scsi(h->ctlr);
311 if (rc != 0) return -rc;
312 return count;
313 }
314 /* might be nice to have "disengage" too, but it's not
315 safely possible. (only 1 module use count, lock issues.) */
316 # endif
317 return -EINVAL;
318 }
319
320 /*
321 * Get us a file in /proc/cciss that says something about each controller.
322 * Create /proc/cciss if it doesn't exist yet.
323 */
324 static void __devinit cciss_procinit(int i)
325 {
326 struct proc_dir_entry *pde;
327
328 if (proc_cciss == NULL) {
329 proc_cciss = proc_mkdir("cciss", proc_root_driver);
330 if (!proc_cciss)
331 return;
332 }
333
334 pde = create_proc_read_entry(hba[i]->devname,
335 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
336 proc_cciss, cciss_proc_get_info, hba[i]);
337 pde->write_proc = cciss_proc_write;
338 }
339 #endif /* CONFIG_PROC_FS */
340
341 /*
342 * For operations that cannot sleep, a command block is allocated at init,
343 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
344 * which ones are free or in use. For operations that can wait for kmalloc
345 * to possible sleep, this routine can be called with get_from_pool set to 0.
346 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
347 */
348 static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
349 {
350 CommandList_struct *c;
351 int i;
352 u64bit temp64;
353 dma_addr_t cmd_dma_handle, err_dma_handle;
354
355 if (!get_from_pool)
356 {
357 c = (CommandList_struct *) pci_alloc_consistent(
358 h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
359 if(c==NULL)
360 return NULL;
361 memset(c, 0, sizeof(CommandList_struct));
362
363 c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
364 h->pdev, sizeof(ErrorInfo_struct),
365 &err_dma_handle);
366
367 if (c->err_info == NULL)
368 {
369 pci_free_consistent(h->pdev,
370 sizeof(CommandList_struct), c, cmd_dma_handle);
371 return NULL;
372 }
373 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
374 } else /* get it out of the controllers pool */
375 {
376 do {
377 i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
378 if (i == NR_CMDS)
379 return NULL;
380 } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
381 #ifdef CCISS_DEBUG
382 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
383 #endif
384 c = h->cmd_pool + i;
385 memset(c, 0, sizeof(CommandList_struct));
386 cmd_dma_handle = h->cmd_pool_dhandle
387 + i*sizeof(CommandList_struct);
388 c->err_info = h->errinfo_pool + i;
389 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
390 err_dma_handle = h->errinfo_pool_dhandle
391 + i*sizeof(ErrorInfo_struct);
392 h->nr_allocs++;
393 }
394
395 c->busaddr = (__u32) cmd_dma_handle;
396 temp64.val = (__u64) err_dma_handle;
397 c->ErrDesc.Addr.lower = temp64.val32.lower;
398 c->ErrDesc.Addr.upper = temp64.val32.upper;
399 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
400
401 c->ctlr = h->ctlr;
402 return c;
403
404
405 }
406
407 /*
408 * Frees a command block that was previously allocated with cmd_alloc().
409 */
410 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
411 {
412 int i;
413 u64bit temp64;
414
415 if( !got_from_pool)
416 {
417 temp64.val32.lower = c->ErrDesc.Addr.lower;
418 temp64.val32.upper = c->ErrDesc.Addr.upper;
419 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
420 c->err_info, (dma_addr_t) temp64.val);
421 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
422 c, (dma_addr_t) c->busaddr);
423 } else
424 {
425 i = c - h->cmd_pool;
426 clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
427 h->nr_frees++;
428 }
429 }
430
431 static inline ctlr_info_t *get_host(struct gendisk *disk)
432 {
433 return disk->queue->queuedata;
434 }
435
436 static inline drive_info_struct *get_drv(struct gendisk *disk)
437 {
438 return disk->private_data;
439 }
440
441 /*
442 * Open. Make sure the device is really there.
443 */
444 static int cciss_open(struct inode *inode, struct file *filep)
445 {
446 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
447 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
448
449 #ifdef CCISS_DEBUG
450 printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
451 #endif /* CCISS_DEBUG */
452
453 /*
454 * Root is allowed to open raw volume zero even if it's not configured
455 * so array config can still work. Root is also allowed to open any
456 * volume that has a LUN ID, so it can issue IOCTL to reread the
457 * disk information. I don't think I really like this
458 * but I'm already using way to many device nodes to claim another one
459 * for "raw controller".
460 */
461 if (drv->nr_blocks == 0) {
462 if (iminor(inode) != 0) { /* not node 0? */
463 /* if not node 0 make sure it is a partition = 0 */
464 if (iminor(inode) & 0x0f) {
465 return -ENXIO;
466 /* if it is, make sure we have a LUN ID */
467 } else if (drv->LunID == 0) {
468 return -ENXIO;
469 }
470 }
471 if (!capable(CAP_SYS_ADMIN))
472 return -EPERM;
473 }
474 drv->usage_count++;
475 host->usage_count++;
476 return 0;
477 }
478 /*
479 * Close. Sync first.
480 */
481 static int cciss_release(struct inode *inode, struct file *filep)
482 {
483 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
484 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
485
486 #ifdef CCISS_DEBUG
487 printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
488 #endif /* CCISS_DEBUG */
489
490 drv->usage_count--;
491 host->usage_count--;
492 return 0;
493 }
494
495 #ifdef CONFIG_COMPAT
496
497 static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
498 {
499 int ret;
500 lock_kernel();
501 ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
502 unlock_kernel();
503 return ret;
504 }
505
506 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
507 static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
508
509 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
510 {
511 switch (cmd) {
512 case CCISS_GETPCIINFO:
513 case CCISS_GETINTINFO:
514 case CCISS_SETINTINFO:
515 case CCISS_GETNODENAME:
516 case CCISS_SETNODENAME:
517 case CCISS_GETHEARTBEAT:
518 case CCISS_GETBUSTYPES:
519 case CCISS_GETFIRMVER:
520 case CCISS_GETDRIVVER:
521 case CCISS_REVALIDVOLS:
522 case CCISS_DEREGDISK:
523 case CCISS_REGNEWDISK:
524 case CCISS_REGNEWD:
525 case CCISS_RESCANDISK:
526 case CCISS_GETLUNINFO:
527 return do_ioctl(f, cmd, arg);
528
529 case CCISS_PASSTHRU32:
530 return cciss_ioctl32_passthru(f, cmd, arg);
531 case CCISS_BIG_PASSTHRU32:
532 return cciss_ioctl32_big_passthru(f, cmd, arg);
533
534 default:
535 return -ENOIOCTLCMD;
536 }
537 }
538
539 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
540 {
541 IOCTL32_Command_struct __user *arg32 =
542 (IOCTL32_Command_struct __user *) arg;
543 IOCTL_Command_struct arg64;
544 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
545 int err;
546 u32 cp;
547
548 err = 0;
549 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
550 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
551 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
552 err |= get_user(arg64.buf_size, &arg32->buf_size);
553 err |= get_user(cp, &arg32->buf);
554 arg64.buf = compat_ptr(cp);
555 err |= copy_to_user(p, &arg64, sizeof(arg64));
556
557 if (err)
558 return -EFAULT;
559
560 err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
561 if (err)
562 return err;
563 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
564 if (err)
565 return -EFAULT;
566 return err;
567 }
568
569 static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
570 {
571 BIG_IOCTL32_Command_struct __user *arg32 =
572 (BIG_IOCTL32_Command_struct __user *) arg;
573 BIG_IOCTL_Command_struct arg64;
574 BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
575 int err;
576 u32 cp;
577
578 err = 0;
579 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
580 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
581 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
582 err |= get_user(arg64.buf_size, &arg32->buf_size);
583 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
584 err |= get_user(cp, &arg32->buf);
585 arg64.buf = compat_ptr(cp);
586 err |= copy_to_user(p, &arg64, sizeof(arg64));
587
588 if (err)
589 return -EFAULT;
590
591 err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
592 if (err)
593 return err;
594 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
595 if (err)
596 return -EFAULT;
597 return err;
598 }
599 #endif
600 /*
601 * ioctl
602 */
603 static int cciss_ioctl(struct inode *inode, struct file *filep,
604 unsigned int cmd, unsigned long arg)
605 {
606 struct block_device *bdev = inode->i_bdev;
607 struct gendisk *disk = bdev->bd_disk;
608 ctlr_info_t *host = get_host(disk);
609 drive_info_struct *drv = get_drv(disk);
610 int ctlr = host->ctlr;
611 void __user *argp = (void __user *)arg;
612
613 #ifdef CCISS_DEBUG
614 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
615 #endif /* CCISS_DEBUG */
616
617 switch(cmd) {
618 case HDIO_GETGEO:
619 {
620 struct hd_geometry driver_geo;
621 if (drv->cylinders) {
622 driver_geo.heads = drv->heads;
623 driver_geo.sectors = drv->sectors;
624 driver_geo.cylinders = drv->cylinders;
625 } else
626 return -ENXIO;
627 driver_geo.start= get_start_sect(inode->i_bdev);
628 if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry)))
629 return -EFAULT;
630 return(0);
631 }
632
633 case CCISS_GETPCIINFO:
634 {
635 cciss_pci_info_struct pciinfo;
636
637 if (!arg) return -EINVAL;
638 pciinfo.bus = host->pdev->bus->number;
639 pciinfo.dev_fn = host->pdev->devfn;
640 pciinfo.board_id = host->board_id;
641 if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct )))
642 return -EFAULT;
643 return(0);
644 }
645 case CCISS_GETINTINFO:
646 {
647 cciss_coalint_struct intinfo;
648 if (!arg) return -EINVAL;
649 intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
650 intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
651 if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
652 return -EFAULT;
653 return(0);
654 }
655 case CCISS_SETINTINFO:
656 {
657 cciss_coalint_struct intinfo;
658 unsigned long flags;
659 int i;
660
661 if (!arg) return -EINVAL;
662 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
663 if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
664 return -EFAULT;
665 if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
666
667 {
668 // printk("cciss_ioctl: delay and count cannot be 0\n");
669 return( -EINVAL);
670 }
671 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
672 /* Update the field, and then ring the doorbell */
673 writel( intinfo.delay,
674 &(host->cfgtable->HostWrite.CoalIntDelay));
675 writel( intinfo.count,
676 &(host->cfgtable->HostWrite.CoalIntCount));
677 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
678
679 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
680 if (!(readl(host->vaddr + SA5_DOORBELL)
681 & CFGTBL_ChangeReq))
682 break;
683 /* delay and try again */
684 udelay(1000);
685 }
686 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
687 if (i >= MAX_IOCTL_CONFIG_WAIT)
688 return -EAGAIN;
689 return(0);
690 }
691 case CCISS_GETNODENAME:
692 {
693 NodeName_type NodeName;
694 int i;
695
696 if (!arg) return -EINVAL;
697 for(i=0;i<16;i++)
698 NodeName[i] = readb(&host->cfgtable->ServerName[i]);
699 if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
700 return -EFAULT;
701 return(0);
702 }
703 case CCISS_SETNODENAME:
704 {
705 NodeName_type NodeName;
706 unsigned long flags;
707 int i;
708
709 if (!arg) return -EINVAL;
710 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
711
712 if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
713 return -EFAULT;
714
715 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
716
717 /* Update the field, and then ring the doorbell */
718 for(i=0;i<16;i++)
719 writeb( NodeName[i], &host->cfgtable->ServerName[i]);
720
721 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
722
723 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
724 if (!(readl(host->vaddr + SA5_DOORBELL)
725 & CFGTBL_ChangeReq))
726 break;
727 /* delay and try again */
728 udelay(1000);
729 }
730 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
731 if (i >= MAX_IOCTL_CONFIG_WAIT)
732 return -EAGAIN;
733 return(0);
734 }
735
736 case CCISS_GETHEARTBEAT:
737 {
738 Heartbeat_type heartbeat;
739
740 if (!arg) return -EINVAL;
741 heartbeat = readl(&host->cfgtable->HeartBeat);
742 if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
743 return -EFAULT;
744 return(0);
745 }
746 case CCISS_GETBUSTYPES:
747 {
748 BusTypes_type BusTypes;
749
750 if (!arg) return -EINVAL;
751 BusTypes = readl(&host->cfgtable->BusTypes);
752 if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
753 return -EFAULT;
754 return(0);
755 }
756 case CCISS_GETFIRMVER:
757 {
758 FirmwareVer_type firmware;
759
760 if (!arg) return -EINVAL;
761 memcpy(firmware, host->firm_ver, 4);
762
763 if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
764 return -EFAULT;
765 return(0);
766 }
767 case CCISS_GETDRIVVER:
768 {
769 DriverVer_type DriverVer = DRIVER_VERSION;
770
771 if (!arg) return -EINVAL;
772
773 if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
774 return -EFAULT;
775 return(0);
776 }
777
778 case CCISS_REVALIDVOLS:
779 if (bdev != bdev->bd_contains || drv != host->drv)
780 return -ENXIO;
781 return revalidate_allvol(host);
782
783 case CCISS_GETLUNINFO: {
784 LogvolInfo_struct luninfo;
785 int i;
786
787 luninfo.LunID = drv->LunID;
788 luninfo.num_opens = drv->usage_count;
789 luninfo.num_parts = 0;
790 /* count partitions 1 to 15 with sizes > 0 */
791 for (i = 0; i < MAX_PART - 1; i++) {
792 if (!disk->part[i])
793 continue;
794 if (disk->part[i]->nr_sects != 0)
795 luninfo.num_parts++;
796 }
797 if (copy_to_user(argp, &luninfo,
798 sizeof(LogvolInfo_struct)))
799 return -EFAULT;
800 return(0);
801 }
802 case CCISS_DEREGDISK:
803 return deregister_disk(disk);
804
805 case CCISS_REGNEWD:
806 return register_new_disk(host);
807
808 case CCISS_PASSTHRU:
809 {
810 IOCTL_Command_struct iocommand;
811 CommandList_struct *c;
812 char *buff = NULL;
813 u64bit temp64;
814 unsigned long flags;
815 DECLARE_COMPLETION(wait);
816
817 if (!arg) return -EINVAL;
818
819 if (!capable(CAP_SYS_RAWIO)) return -EPERM;
820
821 if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
822 return -EFAULT;
823 if((iocommand.buf_size < 1) &&
824 (iocommand.Request.Type.Direction != XFER_NONE))
825 {
826 return -EINVAL;
827 }
828 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
829 /* Check kmalloc limits */
830 if(iocommand.buf_size > 128000)
831 return -EINVAL;
832 #endif
833 if(iocommand.buf_size > 0)
834 {
835 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
836 if( buff == NULL)
837 return -EFAULT;
838 }
839 if (iocommand.Request.Type.Direction == XFER_WRITE)
840 {
841 /* Copy the data into the buffer we created */
842 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
843 {
844 kfree(buff);
845 return -EFAULT;
846 }
847 } else {
848 memset(buff, 0, iocommand.buf_size);
849 }
850 if ((c = cmd_alloc(host , 0)) == NULL)
851 {
852 kfree(buff);
853 return -ENOMEM;
854 }
855 // Fill in the command type
856 c->cmd_type = CMD_IOCTL_PEND;
857 // Fill in Command Header
858 c->Header.ReplyQueue = 0; // unused in simple mode
859 if( iocommand.buf_size > 0) // buffer to fill
860 {
861 c->Header.SGList = 1;
862 c->Header.SGTotal= 1;
863 } else // no buffers to fill
864 {
865 c->Header.SGList = 0;
866 c->Header.SGTotal= 0;
867 }
868 c->Header.LUN = iocommand.LUN_info;
869 c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
870
871 // Fill in Request block
872 c->Request = iocommand.Request;
873
874 // Fill in the scatter gather information
875 if (iocommand.buf_size > 0 )
876 {
877 temp64.val = pci_map_single( host->pdev, buff,
878 iocommand.buf_size,
879 PCI_DMA_BIDIRECTIONAL);
880 c->SG[0].Addr.lower = temp64.val32.lower;
881 c->SG[0].Addr.upper = temp64.val32.upper;
882 c->SG[0].Len = iocommand.buf_size;
883 c->SG[0].Ext = 0; // we are not chaining
884 }
885 c->waiting = &wait;
886
887 /* Put the request on the tail of the request queue */
888 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
889 addQ(&host->reqQ, c);
890 host->Qdepth++;
891 start_io(host);
892 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
893
894 wait_for_completion(&wait);
895
896 /* unlock the buffers from DMA */
897 temp64.val32.lower = c->SG[0].Addr.lower;
898 temp64.val32.upper = c->SG[0].Addr.upper;
899 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
900 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
901
902 /* Copy the error information out */
903 iocommand.error_info = *(c->err_info);
904 if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
905 {
906 kfree(buff);
907 cmd_free(host, c, 0);
908 return( -EFAULT);
909 }
910
911 if (iocommand.Request.Type.Direction == XFER_READ)
912 {
913 /* Copy the data out of the buffer we created */
914 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
915 {
916 kfree(buff);
917 cmd_free(host, c, 0);
918 return -EFAULT;
919 }
920 }
921 kfree(buff);
922 cmd_free(host, c, 0);
923 return(0);
924 }
925 case CCISS_BIG_PASSTHRU: {
926 BIG_IOCTL_Command_struct *ioc;
927 CommandList_struct *c;
928 unsigned char **buff = NULL;
929 int *buff_size = NULL;
930 u64bit temp64;
931 unsigned long flags;
932 BYTE sg_used = 0;
933 int status = 0;
934 int i;
935 DECLARE_COMPLETION(wait);
936 __u32 left;
937 __u32 sz;
938 BYTE __user *data_ptr;
939
940 if (!arg)
941 return -EINVAL;
942 if (!capable(CAP_SYS_RAWIO))
943 return -EPERM;
944 ioc = (BIG_IOCTL_Command_struct *)
945 kmalloc(sizeof(*ioc), GFP_KERNEL);
946 if (!ioc) {
947 status = -ENOMEM;
948 goto cleanup1;
949 }
950 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
951 status = -EFAULT;
952 goto cleanup1;
953 }
954 if ((ioc->buf_size < 1) &&
955 (ioc->Request.Type.Direction != XFER_NONE)) {
956 status = -EINVAL;
957 goto cleanup1;
958 }
959 /* Check kmalloc limits using all SGs */
960 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
961 status = -EINVAL;
962 goto cleanup1;
963 }
964 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
965 status = -EINVAL;
966 goto cleanup1;
967 }
968 buff = (unsigned char **) kmalloc(MAXSGENTRIES *
969 sizeof(char *), GFP_KERNEL);
970 if (!buff) {
971 status = -ENOMEM;
972 goto cleanup1;
973 }
974 memset(buff, 0, MAXSGENTRIES);
975 buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
976 GFP_KERNEL);
977 if (!buff_size) {
978 status = -ENOMEM;
979 goto cleanup1;
980 }
981 left = ioc->buf_size;
982 data_ptr = ioc->buf;
983 while (left) {
984 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
985 buff_size[sg_used] = sz;
986 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
987 if (buff[sg_used] == NULL) {
988 status = -ENOMEM;
989 goto cleanup1;
990 }
991 if (ioc->Request.Type.Direction == XFER_WRITE &&
992 copy_from_user(buff[sg_used], data_ptr, sz)) {
993 status = -ENOMEM;
994 goto cleanup1;
995 } else {
996 memset(buff[sg_used], 0, sz);
997 }
998 left -= sz;
999 data_ptr += sz;
1000 sg_used++;
1001 }
1002 if ((c = cmd_alloc(host , 0)) == NULL) {
1003 status = -ENOMEM;
1004 goto cleanup1;
1005 }
1006 c->cmd_type = CMD_IOCTL_PEND;
1007 c->Header.ReplyQueue = 0;
1008
1009 if( ioc->buf_size > 0) {
1010 c->Header.SGList = sg_used;
1011 c->Header.SGTotal= sg_used;
1012 } else {
1013 c->Header.SGList = 0;
1014 c->Header.SGTotal= 0;
1015 }
1016 c->Header.LUN = ioc->LUN_info;
1017 c->Header.Tag.lower = c->busaddr;
1018
1019 c->Request = ioc->Request;
1020 if (ioc->buf_size > 0 ) {
1021 int i;
1022 for(i=0; i<sg_used; i++) {
1023 temp64.val = pci_map_single( host->pdev, buff[i],
1024 buff_size[i],
1025 PCI_DMA_BIDIRECTIONAL);
1026 c->SG[i].Addr.lower = temp64.val32.lower;
1027 c->SG[i].Addr.upper = temp64.val32.upper;
1028 c->SG[i].Len = buff_size[i];
1029 c->SG[i].Ext = 0; /* we are not chaining */
1030 }
1031 }
1032 c->waiting = &wait;
1033 /* Put the request on the tail of the request queue */
1034 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1035 addQ(&host->reqQ, c);
1036 host->Qdepth++;
1037 start_io(host);
1038 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1039 wait_for_completion(&wait);
1040 /* unlock the buffers from DMA */
1041 for(i=0; i<sg_used; i++) {
1042 temp64.val32.lower = c->SG[i].Addr.lower;
1043 temp64.val32.upper = c->SG[i].Addr.upper;
1044 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
1045 buff_size[i], PCI_DMA_BIDIRECTIONAL);
1046 }
1047 /* Copy the error information out */
1048 ioc->error_info = *(c->err_info);
1049 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1050 cmd_free(host, c, 0);
1051 status = -EFAULT;
1052 goto cleanup1;
1053 }
1054 if (ioc->Request.Type.Direction == XFER_READ) {
1055 /* Copy the data out of the buffer we created */
1056 BYTE __user *ptr = ioc->buf;
1057 for(i=0; i< sg_used; i++) {
1058 if (copy_to_user(ptr, buff[i], buff_size[i])) {
1059 cmd_free(host, c, 0);
1060 status = -EFAULT;
1061 goto cleanup1;
1062 }
1063 ptr += buff_size[i];
1064 }
1065 }
1066 cmd_free(host, c, 0);
1067 status = 0;
1068 cleanup1:
1069 if (buff) {
1070 for(i=0; i<sg_used; i++)
1071 if(buff[i] != NULL)
1072 kfree(buff[i]);
1073 kfree(buff);
1074 }
1075 if (buff_size)
1076 kfree(buff_size);
1077 if (ioc)
1078 kfree(ioc);
1079 return(status);
1080 }
1081 default:
1082 return -ENOTTY;
1083 }
1084
1085 }
1086
1087 /*
1088 * revalidate_allvol is for online array config utilities. After a
1089 * utility reconfigures the drives in the array, it can use this function
1090 * (through an ioctl) to make the driver zap any previous disk structs for
1091 * that controller and get new ones.
1092 *
1093 * Right now I'm using the getgeometry() function to do this, but this
1094 * function should probably be finer grained and allow you to revalidate one
1095 * particualar logical volume (instead of all of them on a particular
1096 * controller).
1097 */
1098 static int revalidate_allvol(ctlr_info_t *host)
1099 {
1100 int ctlr = host->ctlr, i;
1101 unsigned long flags;
1102
1103 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1104 if (host->usage_count > 1) {
1105 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1106 printk(KERN_WARNING "cciss: Device busy for volume"
1107 " revalidation (usage=%d)\n", host->usage_count);
1108 return -EBUSY;
1109 }
1110 host->usage_count++;
1111 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1112
1113 for(i=0; i< NWD; i++) {
1114 struct gendisk *disk = host->gendisk[i];
1115 if (disk->flags & GENHD_FL_UP)
1116 del_gendisk(disk);
1117 }
1118
1119 /*
1120 * Set the partition and block size structures for all volumes
1121 * on this controller to zero. We will reread all of this data
1122 */
1123 memset(host->drv, 0, sizeof(drive_info_struct)
1124 * CISS_MAX_LUN);
1125 /*
1126 * Tell the array controller not to give us any interrupts while
1127 * we check the new geometry. Then turn interrupts back on when
1128 * we're done.
1129 */
1130 host->access.set_intr_mask(host, CCISS_INTR_OFF);
1131 cciss_getgeometry(ctlr);
1132 host->access.set_intr_mask(host, CCISS_INTR_ON);
1133
1134 /* Loop through each real device */
1135 for (i = 0; i < NWD; i++) {
1136 struct gendisk *disk = host->gendisk[i];
1137 drive_info_struct *drv = &(host->drv[i]);
1138 /* we must register the controller even if no disks exist */
1139 /* this is for the online array utilities */
1140 if (!drv->heads && i)
1141 continue;
1142 blk_queue_hardsect_size(host->queue, drv->block_size);
1143 set_capacity(disk, drv->nr_blocks);
1144 add_disk(disk);
1145 }
1146 host->usage_count--;
1147 return 0;
1148 }
1149
1150 static int deregister_disk(struct gendisk *disk)
1151 {
1152 unsigned long flags;
1153 ctlr_info_t *h = get_host(disk);
1154 drive_info_struct *drv = get_drv(disk);
1155 int ctlr = h->ctlr;
1156
1157 if (!capable(CAP_SYS_RAWIO))
1158 return -EPERM;
1159
1160 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1161 /* make sure logical volume is NOT is use */
1162 if( drv->usage_count > 1) {
1163 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1164 return -EBUSY;
1165 }
1166 drv->usage_count++;
1167 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1168
1169 /* invalidate the devices and deregister the disk */
1170 if (disk->flags & GENHD_FL_UP)
1171 del_gendisk(disk);
1172 /* check to see if it was the last disk */
1173 if (drv == h->drv + h->highest_lun) {
1174 /* if so, find the new hightest lun */
1175 int i, newhighest =-1;
1176 for(i=0; i<h->highest_lun; i++) {
1177 /* if the disk has size > 0, it is available */
1178 if (h->drv[i].nr_blocks)
1179 newhighest = i;
1180 }
1181 h->highest_lun = newhighest;
1182
1183 }
1184 --h->num_luns;
1185 /* zero out the disk size info */
1186 drv->nr_blocks = 0;
1187 drv->block_size = 0;
1188 drv->cylinders = 0;
1189 drv->LunID = 0;
1190 return(0);
1191 }
1192 static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
1193 size_t size,
1194 unsigned int use_unit_num, /* 0: address the controller,
1195 1: address logical volume log_unit,
1196 2: periph device address is scsi3addr */
1197 unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
1198 int cmd_type)
1199 {
1200 ctlr_info_t *h= hba[ctlr];
1201 u64bit buff_dma_handle;
1202 int status = IO_OK;
1203
1204 c->cmd_type = CMD_IOCTL_PEND;
1205 c->Header.ReplyQueue = 0;
1206 if( buff != NULL) {
1207 c->Header.SGList = 1;
1208 c->Header.SGTotal= 1;
1209 } else {
1210 c->Header.SGList = 0;
1211 c->Header.SGTotal= 0;
1212 }
1213 c->Header.Tag.lower = c->busaddr;
1214
1215 c->Request.Type.Type = cmd_type;
1216 if (cmd_type == TYPE_CMD) {
1217 switch(cmd) {
1218 case CISS_INQUIRY:
1219 /* If the logical unit number is 0 then, this is going
1220 to controller so It's a physical command
1221 mode = 0 target = 0. So we have nothing to write.
1222 otherwise, if use_unit_num == 1,
1223 mode = 1(volume set addressing) target = LUNID
1224 otherwise, if use_unit_num == 2,
1225 mode = 0(periph dev addr) target = scsi3addr */
1226 if (use_unit_num == 1) {
1227 c->Header.LUN.LogDev.VolId=
1228 h->drv[log_unit].LunID;
1229 c->Header.LUN.LogDev.Mode = 1;
1230 } else if (use_unit_num == 2) {
1231 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
1232 c->Header.LUN.LogDev.Mode = 0;
1233 }
1234 /* are we trying to read a vital product page */
1235 if(page_code != 0) {
1236 c->Request.CDB[1] = 0x01;
1237 c->Request.CDB[2] = page_code;
1238 }
1239 c->Request.CDBLen = 6;
1240 c->Request.Type.Attribute = ATTR_SIMPLE;
1241 c->Request.Type.Direction = XFER_READ;
1242 c->Request.Timeout = 0;
1243 c->Request.CDB[0] = CISS_INQUIRY;
1244 c->Request.CDB[4] = size & 0xFF;
1245 break;
1246 case CISS_REPORT_LOG:
1247 case CISS_REPORT_PHYS:
1248 /* Talking to controller so It's a physical command
1249 mode = 00 target = 0. Nothing to write.
1250 */
1251 c->Request.CDBLen = 12;
1252 c->Request.Type.Attribute = ATTR_SIMPLE;
1253 c->Request.Type.Direction = XFER_READ;
1254 c->Request.Timeout = 0;
1255 c->Request.CDB[0] = cmd;
1256 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1257 c->Request.CDB[7] = (size >> 16) & 0xFF;
1258 c->Request.CDB[8] = (size >> 8) & 0xFF;
1259 c->Request.CDB[9] = size & 0xFF;
1260 break;
1261
1262 case CCISS_READ_CAPACITY:
1263 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1264 c->Header.LUN.LogDev.Mode = 1;
1265 c->Request.CDBLen = 10;
1266 c->Request.Type.Attribute = ATTR_SIMPLE;
1267 c->Request.Type.Direction = XFER_READ;
1268 c->Request.Timeout = 0;
1269 c->Request.CDB[0] = cmd;
1270 break;
1271 case CCISS_CACHE_FLUSH:
1272 c->Request.CDBLen = 12;
1273 c->Request.Type.Attribute = ATTR_SIMPLE;
1274 c->Request.Type.Direction = XFER_WRITE;
1275 c->Request.Timeout = 0;
1276 c->Request.CDB[0] = BMIC_WRITE;
1277 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1278 break;
1279 default:
1280 printk(KERN_WARNING
1281 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
1282 return(IO_ERROR);
1283 }
1284 } else if (cmd_type == TYPE_MSG) {
1285 switch (cmd) {
1286 case 3: /* No-Op message */
1287 c->Request.CDBLen = 1;
1288 c->Request.Type.Attribute = ATTR_SIMPLE;
1289 c->Request.Type.Direction = XFER_WRITE;
1290 c->Request.Timeout = 0;
1291 c->Request.CDB[0] = cmd;
1292 break;
1293 default:
1294 printk(KERN_WARNING
1295 "cciss%d: unknown message type %d\n",
1296 ctlr, cmd);
1297 return IO_ERROR;
1298 }
1299 } else {
1300 printk(KERN_WARNING
1301 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1302 return IO_ERROR;
1303 }
1304 /* Fill in the scatter gather information */
1305 if (size > 0) {
1306 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1307 buff, size, PCI_DMA_BIDIRECTIONAL);
1308 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1309 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1310 c->SG[0].Len = size;
1311 c->SG[0].Ext = 0; /* we are not chaining */
1312 }
1313 return status;
1314 }
1315 static int sendcmd_withirq(__u8 cmd,
1316 int ctlr,
1317 void *buff,
1318 size_t size,
1319 unsigned int use_unit_num,
1320 unsigned int log_unit,
1321 __u8 page_code,
1322 int cmd_type)
1323 {
1324 ctlr_info_t *h = hba[ctlr];
1325 CommandList_struct *c;
1326 u64bit buff_dma_handle;
1327 unsigned long flags;
1328 int return_status;
1329 DECLARE_COMPLETION(wait);
1330
1331 if ((c = cmd_alloc(h , 0)) == NULL)
1332 return -ENOMEM;
1333 return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1334 log_unit, page_code, NULL, cmd_type);
1335 if (return_status != IO_OK) {
1336 cmd_free(h, c, 0);
1337 return return_status;
1338 }
1339 resend_cmd2:
1340 c->waiting = &wait;
1341
1342 /* Put the request on the tail of the queue and send it */
1343 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1344 addQ(&h->reqQ, c);
1345 h->Qdepth++;
1346 start_io(h);
1347 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1348
1349 wait_for_completion(&wait);
1350
1351 if(c->err_info->CommandStatus != 0)
1352 { /* an error has occurred */
1353 switch(c->err_info->CommandStatus)
1354 {
1355 case CMD_TARGET_STATUS:
1356 printk(KERN_WARNING "cciss: cmd %p has "
1357 " completed with errors\n", c);
1358 if( c->err_info->ScsiStatus)
1359 {
1360 printk(KERN_WARNING "cciss: cmd %p "
1361 "has SCSI Status = %x\n",
1362 c,
1363 c->err_info->ScsiStatus);
1364 }
1365
1366 break;
1367 case CMD_DATA_UNDERRUN:
1368 case CMD_DATA_OVERRUN:
1369 /* expected for inquire and report lun commands */
1370 break;
1371 case CMD_INVALID:
1372 printk(KERN_WARNING "cciss: Cmd %p is "
1373 "reported invalid\n", c);
1374 return_status = IO_ERROR;
1375 break;
1376 case CMD_PROTOCOL_ERR:
1377 printk(KERN_WARNING "cciss: cmd %p has "
1378 "protocol error \n", c);
1379 return_status = IO_ERROR;
1380 break;
1381 case CMD_HARDWARE_ERR:
1382 printk(KERN_WARNING "cciss: cmd %p had "
1383 " hardware error\n", c);
1384 return_status = IO_ERROR;
1385 break;
1386 case CMD_CONNECTION_LOST:
1387 printk(KERN_WARNING "cciss: cmd %p had "
1388 "connection lost\n", c);
1389 return_status = IO_ERROR;
1390 break;
1391 case CMD_ABORTED:
1392 printk(KERN_WARNING "cciss: cmd %p was "
1393 "aborted\n", c);
1394 return_status = IO_ERROR;
1395 break;
1396 case CMD_ABORT_FAILED:
1397 printk(KERN_WARNING "cciss: cmd %p reports "
1398 "abort failed\n", c);
1399 return_status = IO_ERROR;
1400 break;
1401 case CMD_UNSOLICITED_ABORT:
1402 printk(KERN_WARNING
1403 "cciss%d: unsolicited abort %p\n",
1404 ctlr, c);
1405 if (c->retry_count < MAX_CMD_RETRIES) {
1406 printk(KERN_WARNING
1407 "cciss%d: retrying %p\n",
1408 ctlr, c);
1409 c->retry_count++;
1410 /* erase the old error information */
1411 memset(c->err_info, 0,
1412 sizeof(ErrorInfo_struct));
1413 return_status = IO_OK;
1414 INIT_COMPLETION(wait);
1415 goto resend_cmd2;
1416 }
1417 return_status = IO_ERROR;
1418 break;
1419 default:
1420 printk(KERN_WARNING "cciss: cmd %p returned "
1421 "unknown status %x\n", c,
1422 c->err_info->CommandStatus);
1423 return_status = IO_ERROR;
1424 }
1425 }
1426 /* unlock the buffers from DMA */
1427 pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1428 size, PCI_DMA_BIDIRECTIONAL);
1429 cmd_free(h, c, 0);
1430 return(return_status);
1431
1432 }
1433 static void cciss_geometry_inquiry(int ctlr, int logvol,
1434 int withirq, unsigned int total_size,
1435 unsigned int block_size, InquiryData_struct *inq_buff,
1436 drive_info_struct *drv)
1437 {
1438 int return_code;
1439 memset(inq_buff, 0, sizeof(InquiryData_struct));
1440 if (withirq)
1441 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1442 inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1443 else
1444 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1445 sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1446 if (return_code == IO_OK) {
1447 if(inq_buff->data_byte[8] == 0xFF) {
1448 printk(KERN_WARNING
1449 "cciss: reading geometry failed, volume "
1450 "does not support reading geometry\n");
1451 drv->block_size = block_size;
1452 drv->nr_blocks = total_size;
1453 drv->heads = 255;
1454 drv->sectors = 32; // Sectors per track
1455 drv->cylinders = total_size / 255 / 32;
1456 } else {
1457 unsigned int t;
1458
1459 drv->block_size = block_size;
1460 drv->nr_blocks = total_size;
1461 drv->heads = inq_buff->data_byte[6];
1462 drv->sectors = inq_buff->data_byte[7];
1463 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1464 drv->cylinders += inq_buff->data_byte[5];
1465 drv->raid_level = inq_buff->data_byte[8];
1466 t = drv->heads * drv->sectors;
1467 if (t > 1) {
1468 drv->cylinders = total_size/t;
1469 }
1470 }
1471 } else { /* Get geometry failed */
1472 printk(KERN_WARNING "cciss: reading geometry failed\n");
1473 }
1474 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
1475 drv->heads, drv->sectors, drv->cylinders);
1476 }
1477 static void
1478 cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1479 int withirq, unsigned int *total_size, unsigned int *block_size)
1480 {
1481 int return_code;
1482 memset(buf, 0, sizeof(*buf));
1483 if (withirq)
1484 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1485 ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1486 else
1487 return_code = sendcmd(CCISS_READ_CAPACITY,
1488 ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1489 if (return_code == IO_OK) {
1490 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1491 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1492 } else { /* read capacity command failed */
1493 printk(KERN_WARNING "cciss: read capacity failed\n");
1494 *total_size = 0;
1495 *block_size = BLOCK_SIZE;
1496 }
1497 printk(KERN_INFO " blocks= %u block_size= %d\n",
1498 *total_size, *block_size);
1499 return;
1500 }
1501
1502 static int register_new_disk(ctlr_info_t *h)
1503 {
1504 struct gendisk *disk;
1505 int ctlr = h->ctlr;
1506 int i;
1507 int num_luns;
1508 int logvol;
1509 int new_lun_found = 0;
1510 int new_lun_index = 0;
1511 int free_index_found = 0;
1512 int free_index = 0;
1513 ReportLunData_struct *ld_buff = NULL;
1514 ReadCapdata_struct *size_buff = NULL;
1515 InquiryData_struct *inq_buff = NULL;
1516 int return_code;
1517 int listlength = 0;
1518 __u32 lunid = 0;
1519 unsigned int block_size;
1520 unsigned int total_size;
1521
1522 if (!capable(CAP_SYS_RAWIO))
1523 return -EPERM;
1524 /* if we have no space in our disk array left to add anything */
1525 if( h->num_luns >= CISS_MAX_LUN)
1526 return -EINVAL;
1527
1528 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1529 if (ld_buff == NULL)
1530 goto mem_msg;
1531 memset(ld_buff, 0, sizeof(ReportLunData_struct));
1532 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1533 if (size_buff == NULL)
1534 goto mem_msg;
1535 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1536 if (inq_buff == NULL)
1537 goto mem_msg;
1538
1539 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1540 sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);
1541
1542 if( return_code == IO_OK)
1543 {
1544
1545 // printk("LUN Data\n--------------------------\n");
1546
1547 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
1548 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
1549 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
1550 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1551 } else /* reading number of logical volumes failed */
1552 {
1553 printk(KERN_WARNING "cciss: report logical volume"
1554 " command failed\n");
1555 listlength = 0;
1556 goto free_err;
1557 }
1558 num_luns = listlength / 8; // 8 bytes pre entry
1559 if (num_luns > CISS_MAX_LUN)
1560 {
1561 num_luns = CISS_MAX_LUN;
1562 }
1563 #ifdef CCISS_DEBUG
1564 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
1565 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
1566 ld_buff->LUNListLength[3], num_luns);
1567 #endif
1568 for(i=0; i< num_luns; i++)
1569 {
1570 int j;
1571 int lunID_found = 0;
1572
1573 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
1574 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
1575 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
1576 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1577
1578 /* check to see if this is a new lun */
1579 for(j=0; j <= h->highest_lun; j++)
1580 {
1581 #ifdef CCISS_DEBUG
1582 printk("Checking %d %x against %x\n", j,h->drv[j].LunID,
1583 lunid);
1584 #endif /* CCISS_DEBUG */
1585 if (h->drv[j].LunID == lunid)
1586 {
1587 lunID_found = 1;
1588 break;
1589 }
1590
1591 }
1592 if( lunID_found == 1)
1593 continue;
1594 else
1595 { /* It is the new lun we have been looking for */
1596 #ifdef CCISS_DEBUG
1597 printk("new lun found at %d\n", i);
1598 #endif /* CCISS_DEBUG */
1599 new_lun_index = i;
1600 new_lun_found = 1;
1601 break;
1602 }
1603 }
1604 if (!new_lun_found)
1605 {
1606 printk(KERN_WARNING "cciss: New Logical Volume not found\n");
1607 goto free_err;
1608 }
1609 /* Now find the free index */
1610 for(i=0; i <CISS_MAX_LUN; i++)
1611 {
1612 #ifdef CCISS_DEBUG
1613 printk("Checking Index %d\n", i);
1614 #endif /* CCISS_DEBUG */
1615 if(h->drv[i].LunID == 0)
1616 {
1617 #ifdef CCISS_DEBUG
1618 printk("free index found at %d\n", i);
1619 #endif /* CCISS_DEBUG */
1620 free_index_found = 1;
1621 free_index = i;
1622 break;
1623 }
1624 }
1625 if (!free_index_found)
1626 {
1627 printk(KERN_WARNING "cciss: unable to find free slot for disk\n");
1628 goto free_err;
1629 }
1630
1631 logvol = free_index;
1632 h->drv[logvol].LunID = lunid;
1633 /* there could be gaps in lun numbers, track hightest */
1634 if(h->highest_lun < lunid)
1635 h->highest_lun = logvol;
1636 cciss_read_capacity(ctlr, logvol, size_buff, 1,
1637 &total_size, &block_size);
1638 cciss_geometry_inquiry(ctlr, logvol, 1, total_size, block_size,
1639 inq_buff, &h->drv[logvol]);
1640 h->drv[logvol].usage_count = 0;
1641 ++h->num_luns;
1642 /* setup partitions per disk */
1643 disk = h->gendisk[logvol];
1644 set_capacity(disk, h->drv[logvol].nr_blocks);
1645 /* if it's the controller it's already added */
1646 if(logvol)
1647 add_disk(disk);
1648 freeret:
1649 kfree(ld_buff);
1650 kfree(size_buff);
1651 kfree(inq_buff);
1652 return (logvol);
1653 mem_msg:
1654 printk(KERN_ERR "cciss: out of memory\n");
1655 free_err:
1656 logvol = -1;
1657 goto freeret;
1658 }
1659
1660 static int cciss_revalidate(struct gendisk *disk)
1661 {
1662 ctlr_info_t *h = get_host(disk);
1663 drive_info_struct *drv = get_drv(disk);
1664 int logvol;
1665 int FOUND=0;
1666 unsigned int block_size;
1667 unsigned int total_size;
1668 ReadCapdata_struct *size_buff = NULL;
1669 InquiryData_struct *inq_buff = NULL;
1670
1671 for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1672 {
1673 if(h->drv[logvol].LunID == drv->LunID) {
1674 FOUND=1;
1675 break;
1676 }
1677 }
1678
1679 if (!FOUND) return 1;
1680
1681 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1682 if (size_buff == NULL)
1683 {
1684 printk(KERN_WARNING "cciss: out of memory\n");
1685 return 1;
1686 }
1687 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1688 if (inq_buff == NULL)
1689 {
1690 printk(KERN_WARNING "cciss: out of memory\n");
1691 kfree(size_buff);
1692 return 1;
1693 }
1694
1695 cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1696 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1697
1698 blk_queue_hardsect_size(h->queue, drv->block_size);
1699 set_capacity(disk, drv->nr_blocks);
1700
1701 kfree(size_buff);
1702 kfree(inq_buff);
1703 return 0;
1704 }
1705
1706 /*
1707 * Wait polling for a command to complete.
1708 * The memory mapped FIFO is polled for the completion.
1709 * Used only at init time, interrupts from the HBA are disabled.
1710 */
1711 static unsigned long pollcomplete(int ctlr)
1712 {
1713 unsigned long done;
1714 int i;
1715
1716 /* Wait (up to 20 seconds) for a command to complete */
1717
1718 for (i = 20 * HZ; i > 0; i--) {
1719 done = hba[ctlr]->access.command_completed(hba[ctlr]);
1720 if (done == FIFO_EMPTY) {
1721 set_current_state(TASK_UNINTERRUPTIBLE);
1722 schedule_timeout(1);
1723 } else
1724 return (done);
1725 }
1726 /* Invalid address to tell caller we ran out of time */
1727 return 1;
1728 }
1729 /*
1730 * Send a command to the controller, and wait for it to complete.
1731 * Only used at init time.
1732 */
1733 static int sendcmd(
1734 __u8 cmd,
1735 int ctlr,
1736 void *buff,
1737 size_t size,
1738 unsigned int use_unit_num, /* 0: address the controller,
1739 1: address logical volume log_unit,
1740 2: periph device address is scsi3addr */
1741 unsigned int log_unit,
1742 __u8 page_code,
1743 unsigned char *scsi3addr,
1744 int cmd_type)
1745 {
1746 CommandList_struct *c;
1747 int i;
1748 unsigned long complete;
1749 ctlr_info_t *info_p= hba[ctlr];
1750 u64bit buff_dma_handle;
1751 int status;
1752
1753 if ((c = cmd_alloc(info_p, 1)) == NULL) {
1754 printk(KERN_WARNING "cciss: unable to get memory");
1755 return(IO_ERROR);
1756 }
1757 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1758 log_unit, page_code, scsi3addr, cmd_type);
1759 if (status != IO_OK) {
1760 cmd_free(info_p, c, 1);
1761 return status;
1762 }
1763 resend_cmd1:
1764 /*
1765 * Disable interrupt
1766 */
1767 #ifdef CCISS_DEBUG
1768 printk(KERN_DEBUG "cciss: turning intr off\n");
1769 #endif /* CCISS_DEBUG */
1770 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1771
1772 /* Make sure there is room in the command FIFO */
1773 /* Actually it should be completely empty at this time. */
1774 for (i = 200000; i > 0; i--)
1775 {
1776 /* if fifo isn't full go */
1777 if (!(info_p->access.fifo_full(info_p)))
1778 {
1779
1780 break;
1781 }
1782 udelay(10);
1783 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
1784 " waiting!\n", ctlr);
1785 }
1786 /*
1787 * Send the cmd
1788 */
1789 info_p->access.submit_command(info_p, c);
1790 complete = pollcomplete(ctlr);
1791
1792 #ifdef CCISS_DEBUG
1793 printk(KERN_DEBUG "cciss: command completed\n");
1794 #endif /* CCISS_DEBUG */
1795
1796 if (complete != 1) {
1797 if ( (complete & CISS_ERROR_BIT)
1798 && (complete & ~CISS_ERROR_BIT) == c->busaddr)
1799 {
1800 /* if data overrun or underun on Report command
1801 ignore it
1802 */
1803 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
1804 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
1805 (c->Request.CDB[0] == CISS_INQUIRY)) &&
1806 ((c->err_info->CommandStatus ==
1807 CMD_DATA_OVERRUN) ||
1808 (c->err_info->CommandStatus ==
1809 CMD_DATA_UNDERRUN)
1810 ))
1811 {
1812 complete = c->busaddr;
1813 } else {
1814 if (c->err_info->CommandStatus ==
1815 CMD_UNSOLICITED_ABORT) {
1816 printk(KERN_WARNING "cciss%d: "
1817 "unsolicited abort %p\n",
1818 ctlr, c);
1819 if (c->retry_count < MAX_CMD_RETRIES) {
1820 printk(KERN_WARNING
1821 "cciss%d: retrying %p\n",
1822 ctlr, c);
1823 c->retry_count++;
1824 /* erase the old error */
1825 /* information */
1826 memset(c->err_info, 0,
1827 sizeof(ErrorInfo_struct));
1828 goto resend_cmd1;
1829 } else {
1830 printk(KERN_WARNING
1831 "cciss%d: retried %p too "
1832 "many times\n", ctlr, c);
1833 status = IO_ERROR;
1834 goto cleanup1;
1835 }
1836 }
1837 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1838 " Error %x \n", ctlr,
1839 c->err_info->CommandStatus);
1840 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1841 " offensive info\n"
1842 " size %x\n num %x value %x\n", ctlr,
1843 c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
1844 c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
1845 c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
1846 status = IO_ERROR;
1847 goto cleanup1;
1848 }
1849 }
1850 if (complete != c->busaddr) {
1851 printk( KERN_WARNING "cciss cciss%d: SendCmd "
1852 "Invalid command list address returned! (%lx)\n",
1853 ctlr, complete);
1854 status = IO_ERROR;
1855 goto cleanup1;
1856 }
1857 } else {
1858 printk( KERN_WARNING
1859 "cciss cciss%d: SendCmd Timeout out, "
1860 "No command list address returned!\n",
1861 ctlr);
1862 status = IO_ERROR;
1863 }
1864
1865 cleanup1:
1866 /* unlock the data buffer from DMA */
1867 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
1868 size, PCI_DMA_BIDIRECTIONAL);
1869 cmd_free(info_p, c, 1);
1870 return (status);
1871 }
1872 /*
1873 * Map (physical) PCI mem into (virtual) kernel space
1874 */
1875 static void __iomem *remap_pci_mem(ulong base, ulong size)
1876 {
1877 ulong page_base = ((ulong) base) & PAGE_MASK;
1878 ulong page_offs = ((ulong) base) - page_base;
1879 void __iomem *page_remapped = ioremap(page_base, page_offs+size);
1880
1881 return page_remapped ? (page_remapped + page_offs) : NULL;
1882 }
1883
1884 /*
1885 * Takes jobs of the Q and sends them to the hardware, then puts it on
1886 * the Q to wait for completion.
1887 */
1888 static void start_io( ctlr_info_t *h)
1889 {
1890 CommandList_struct *c;
1891
1892 while(( c = h->reqQ) != NULL )
1893 {
1894 /* can't do anything if fifo is full */
1895 if ((h->access.fifo_full(h))) {
1896 printk(KERN_WARNING "cciss: fifo full\n");
1897 break;
1898 }
1899
1900 /* Get the frist entry from the Request Q */
1901 removeQ(&(h->reqQ), c);
1902 h->Qdepth--;
1903
1904 /* Tell the controller execute command */
1905 h->access.submit_command(h, c);
1906
1907 /* Put job onto the completed Q */
1908 addQ (&(h->cmpQ), c);
1909 }
1910 }
1911
1912 static inline void complete_buffers(struct bio *bio, int status)
1913 {
1914 while (bio) {
1915 struct bio *xbh = bio->bi_next;
1916 int nr_sectors = bio_sectors(bio);
1917
1918 bio->bi_next = NULL;
1919 blk_finished_io(len);
1920 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
1921 bio = xbh;
1922 }
1923
1924 }
1925 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
1926 /* Zeros out the error record and then resends the command back */
1927 /* to the controller */
1928 static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
1929 {
1930 /* erase the old error information */
1931 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
1932
1933 /* add it to software queue and then send it to the controller */
1934 addQ(&(h->reqQ),c);
1935 h->Qdepth++;
1936 if(h->Qdepth > h->maxQsinceinit)
1937 h->maxQsinceinit = h->Qdepth;
1938
1939 start_io(h);
1940 }
1941 /* checks the status of the job and calls complete buffers to mark all
1942 * buffers for the completed job.
1943 */
1944 static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
1945 int timeout)
1946 {
1947 int status = 1;
1948 int i;
1949 int retry_cmd = 0;
1950 u64bit temp64;
1951
1952 if (timeout)
1953 status = 0;
1954
1955 if(cmd->err_info->CommandStatus != 0)
1956 { /* an error has occurred */
1957 switch(cmd->err_info->CommandStatus)
1958 {
1959 unsigned char sense_key;
1960 case CMD_TARGET_STATUS:
1961 status = 0;
1962
1963 if( cmd->err_info->ScsiStatus == 0x02)
1964 {
1965 printk(KERN_WARNING "cciss: cmd %p "
1966 "has CHECK CONDITION "
1967 " byte 2 = 0x%x\n", cmd,
1968 cmd->err_info->SenseInfo[2]
1969 );
1970 /* check the sense key */
1971 sense_key = 0xf &
1972 cmd->err_info->SenseInfo[2];
1973 /* no status or recovered error */
1974 if((sense_key == 0x0) ||
1975 (sense_key == 0x1))
1976 {
1977 status = 1;
1978 }
1979 } else
1980 {
1981 printk(KERN_WARNING "cciss: cmd %p "
1982 "has SCSI Status 0x%x\n",
1983 cmd, cmd->err_info->ScsiStatus);
1984 }
1985 break;
1986 case CMD_DATA_UNDERRUN:
1987 printk(KERN_WARNING "cciss: cmd %p has"
1988 " completed with data underrun "
1989 "reported\n", cmd);
1990 break;
1991 case CMD_DATA_OVERRUN:
1992 printk(KERN_WARNING "cciss: cmd %p has"
1993 " completed with data overrun "
1994 "reported\n", cmd);
1995 break;
1996 case CMD_INVALID:
1997 printk(KERN_WARNING "cciss: cmd %p is "
1998 "reported invalid\n", cmd);
1999 status = 0;
2000 break;
2001 case CMD_PROTOCOL_ERR:
2002 printk(KERN_WARNING "cciss: cmd %p has "
2003 "protocol error \n", cmd);
2004 status = 0;
2005 break;
2006 case CMD_HARDWARE_ERR:
2007 printk(KERN_WARNING "cciss: cmd %p had "
2008 " hardware error\n", cmd);
2009 status = 0;
2010 break;
2011 case CMD_CONNECTION_LOST:
2012 printk(KERN_WARNING "cciss: cmd %p had "
2013 "connection lost\n", cmd);
2014 status=0;
2015 break;
2016 case CMD_ABORTED:
2017 printk(KERN_WARNING "cciss: cmd %p was "
2018 "aborted\n", cmd);
2019 status=0;
2020 break;
2021 case CMD_ABORT_FAILED:
2022 printk(KERN_WARNING "cciss: cmd %p reports "
2023 "abort failed\n", cmd);
2024 status=0;
2025 break;
2026 case CMD_UNSOLICITED_ABORT:
2027 printk(KERN_WARNING "cciss%d: unsolicited "
2028 "abort %p\n", h->ctlr, cmd);
2029 if (cmd->retry_count < MAX_CMD_RETRIES) {
2030 retry_cmd=1;
2031 printk(KERN_WARNING
2032 "cciss%d: retrying %p\n",
2033 h->ctlr, cmd);
2034 cmd->retry_count++;
2035 } else
2036 printk(KERN_WARNING
2037 "cciss%d: %p retried too "
2038 "many times\n", h->ctlr, cmd);
2039 status=0;
2040 break;
2041 case CMD_TIMEOUT:
2042 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2043 cmd);
2044 status=0;
2045 break;
2046 default:
2047 printk(KERN_WARNING "cciss: cmd %p returned "
2048 "unknown status %x\n", cmd,
2049 cmd->err_info->CommandStatus);
2050 status=0;
2051 }
2052 }
2053 /* We need to return this command */
2054 if(retry_cmd) {
2055 resend_cciss_cmd(h,cmd);
2056 return;
2057 }
2058 /* command did not need to be retried */
2059 /* unmap the DMA mapping for all the scatter gather elements */
2060 for(i=0; i<cmd->Header.SGList; i++) {
2061 temp64.val32.lower = cmd->SG[i].Addr.lower;
2062 temp64.val32.upper = cmd->SG[i].Addr.upper;
2063 pci_unmap_page(hba[cmd->ctlr]->pdev,
2064 temp64.val, cmd->SG[i].Len,
2065 (cmd->Request.Type.Direction == XFER_READ) ?
2066 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2067 }
2068 complete_buffers(cmd->rq->bio, status);
2069
2070 #ifdef CCISS_DEBUG
2071 printk("Done with %p\n", cmd->rq);
2072 #endif /* CCISS_DEBUG */
2073
2074 end_that_request_last(cmd->rq);
2075 cmd_free(h,cmd,1);
2076 }
2077
2078 /*
2079 * Get a request and submit it to the controller.
2080 */
2081 static void do_cciss_request(request_queue_t *q)
2082 {
2083 ctlr_info_t *h= q->queuedata;
2084 CommandList_struct *c;
2085 int start_blk, seg;
2086 struct request *creq;
2087 u64bit temp64;
2088 struct scatterlist tmp_sg[MAXSGENTRIES];
2089 drive_info_struct *drv;
2090 int i, dir;
2091
2092 /* We call start_io here in case there is a command waiting on the
2093 * queue that has not been sent.
2094 */
2095 if (blk_queue_plugged(q))
2096 goto startio;
2097
2098 queue:
2099 creq = elv_next_request(q);
2100 if (!creq)
2101 goto startio;
2102
2103 if (creq->nr_phys_segments > MAXSGENTRIES)
2104 BUG();
2105
2106 if (( c = cmd_alloc(h, 1)) == NULL)
2107 goto full;
2108
2109 blkdev_dequeue_request(creq);
2110
2111 spin_unlock_irq(q->queue_lock);
2112
2113 c->cmd_type = CMD_RWREQ;
2114 c->rq = creq;
2115
2116 /* fill in the request */
2117 drv = creq->rq_disk->private_data;
2118 c->Header.ReplyQueue = 0; // unused in simple mode
2119 c->Header.Tag.lower = c->busaddr; // use the physical address the cmd block for tag
2120 c->Header.LUN.LogDev.VolId= drv->LunID;
2121 c->Header.LUN.LogDev.Mode = 1;
2122 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2123 c->Request.Type.Type = TYPE_CMD; // It is a command.
2124 c->Request.Type.Attribute = ATTR_SIMPLE;
2125 c->Request.Type.Direction =
2126 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
2127 c->Request.Timeout = 0; // Don't time out
2128 c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2129 start_blk = creq->sector;
2130 #ifdef CCISS_DEBUG
2131 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2132 (int) creq->nr_sectors);
2133 #endif /* CCISS_DEBUG */
2134
2135 seg = blk_rq_map_sg(q, creq, tmp_sg);
2136
2137 /* get the DMA records for the setup */
2138 if (c->Request.Type.Direction == XFER_READ)
2139 dir = PCI_DMA_FROMDEVICE;
2140 else
2141 dir = PCI_DMA_TODEVICE;
2142
2143 for (i=0; i<seg; i++)
2144 {
2145 c->SG[i].Len = tmp_sg[i].length;
2146 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2147 tmp_sg[i].offset, tmp_sg[i].length,
2148 dir);
2149 c->SG[i].Addr.lower = temp64.val32.lower;
2150 c->SG[i].Addr.upper = temp64.val32.upper;
2151 c->SG[i].Ext = 0; // we are not chaining
2152 }
2153 /* track how many SG entries we are using */
2154 if( seg > h->maxSG)
2155 h->maxSG = seg;
2156
2157 #ifdef CCISS_DEBUG
2158 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2159 #endif /* CCISS_DEBUG */
2160
2161 c->Header.SGList = c->Header.SGTotal = seg;
2162 c->Request.CDB[1]= 0;
2163 c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB
2164 c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2165 c->Request.CDB[4]= (start_blk >> 8) & 0xff;
2166 c->Request.CDB[5]= start_blk & 0xff;
2167 c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2168 c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff;
2169 c->Request.CDB[8]= creq->nr_sectors & 0xff;
2170 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2171
2172 spin_lock_irq(q->queue_lock);
2173
2174 addQ(&(h->reqQ),c);
2175 h->Qdepth++;
2176 if(h->Qdepth > h->maxQsinceinit)
2177 h->maxQsinceinit = h->Qdepth;
2178
2179 goto queue;
2180 full:
2181 blk_stop_queue(q);
2182 startio:
2183 /* We will already have the driver lock here so not need
2184 * to lock it.
2185 */
2186 start_io(h);
2187 }
2188
2189 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2190 {
2191 ctlr_info_t *h = dev_id;
2192 CommandList_struct *c;
2193 unsigned long flags;
2194 __u32 a, a1;
2195 int j;
2196 int start_queue = h->next_to_run;
2197
2198 /* Is this interrupt for us? */
2199 if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2200 return IRQ_NONE;
2201
2202 /*
2203 * If there are completed commands in the completion queue,
2204 * we had better do something about it.
2205 */
2206 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2207 while( h->access.intr_pending(h))
2208 {
2209 while((a = h->access.command_completed(h)) != FIFO_EMPTY)
2210 {
2211 a1 = a;
2212 a &= ~3;
2213 if ((c = h->cmpQ) == NULL)
2214 {
2215 printk(KERN_WARNING "cciss: Completion of %08lx ignored\n", (unsigned long)a1);
2216 continue;
2217 }
2218 while(c->busaddr != a) {
2219 c = c->next;
2220 if (c == h->cmpQ)
2221 break;
2222 }
2223 /*
2224 * If we've found the command, take it off the
2225 * completion Q and free it
2226 */
2227 if (c->busaddr == a) {
2228 removeQ(&h->cmpQ, c);
2229 if (c->cmd_type == CMD_RWREQ) {
2230 complete_command(h, c, 0);
2231 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2232 complete(c->waiting);
2233 }
2234 # ifdef CONFIG_CISS_SCSI_TAPE
2235 else if (c->cmd_type == CMD_SCSI)
2236 complete_scsi_command(c, 0, a1);
2237 # endif
2238 continue;
2239 }
2240 }
2241 }
2242
2243 /* check to see if we have maxed out the number of commands that can
2244 * be placed on the queue. If so then exit. We do this check here
2245 * in case the interrupt we serviced was from an ioctl and did not
2246 * free any new commands.
2247 */
2248 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2249 goto cleanup;
2250
2251 /* We have room on the queue for more commands. Now we need to queue
2252 * them up. We will also keep track of the next queue to run so
2253 * that every queue gets a chance to be started first.
2254 */
2255 for (j=0; j < NWD; j++){
2256 int curr_queue = (start_queue + j) % NWD;
2257 /* make sure the disk has been added and the drive is real
2258 * because this can be called from the middle of init_one.
2259 */
2260 if(!(h->gendisk[curr_queue]->queue) ||
2261 !(h->drv[curr_queue].heads))
2262 continue;
2263 blk_start_queue(h->gendisk[curr_queue]->queue);
2264
2265 /* check to see if we have maxed out the number of commands
2266 * that can be placed on the queue.
2267 */
2268 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2269 {
2270 if (curr_queue == start_queue){
2271 h->next_to_run = (start_queue + 1) % NWD;
2272 goto cleanup;
2273 } else {
2274 h->next_to_run = curr_queue;
2275 goto cleanup;
2276 }
2277 } else {
2278 curr_queue = (curr_queue + 1) % NWD;
2279 }
2280 }
2281
2282 cleanup:
2283 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2284 return IRQ_HANDLED;
2285 }
2286
2287 /*
2288 * We cannot read the structure directly, for portablity we must use
2289 * the io functions.
2290 * This is for debug only.
2291 */
2292 #ifdef CCISS_DEBUG
2293 static void print_cfg_table( CfgTable_struct *tb)
2294 {
2295 int i;
2296 char temp_name[17];
2297
2298 printk("Controller Configuration information\n");
2299 printk("------------------------------------\n");
2300 for(i=0;i<4;i++)
2301 temp_name[i] = readb(&(tb->Signature[i]));
2302 temp_name[4]='\0';
2303 printk(" Signature = %s\n", temp_name);
2304 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2305 printk(" Transport methods supported = 0x%x\n",
2306 readl(&(tb-> TransportSupport)));
2307 printk(" Transport methods active = 0x%x\n",
2308 readl(&(tb->TransportActive)));
2309 printk(" Requested transport Method = 0x%x\n",
2310 readl(&(tb->HostWrite.TransportRequest)));
2311 printk(" Coalese Interrupt Delay = 0x%x\n",
2312 readl(&(tb->HostWrite.CoalIntDelay)));
2313 printk(" Coalese Interrupt Count = 0x%x\n",
2314 readl(&(tb->HostWrite.CoalIntCount)));
2315 printk(" Max outstanding commands = 0x%d\n",
2316 readl(&(tb->CmdsOutMax)));
2317 printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2318 for(i=0;i<16;i++)
2319 temp_name[i] = readb(&(tb->ServerName[i]));
2320 temp_name[16] = '\0';
2321 printk(" Server Name = %s\n", temp_name);
2322 printk(" Heartbeat Counter = 0x%x\n\n\n",
2323 readl(&(tb->HeartBeat)));
2324 }
2325 #endif /* CCISS_DEBUG */
2326
2327 static void release_io_mem(ctlr_info_t *c)
2328 {
2329 /* if IO mem was not protected do nothing */
2330 if( c->io_mem_addr == 0)
2331 return;
2332 release_region(c->io_mem_addr, c->io_mem_length);
2333 c->io_mem_addr = 0;
2334 c->io_mem_length = 0;
2335 }
2336
2337 static int find_PCI_BAR_index(struct pci_dev *pdev,
2338 unsigned long pci_bar_addr)
2339 {
2340 int i, offset, mem_type, bar_type;
2341 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2342 return 0;
2343 offset = 0;
2344 for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2345 bar_type = pci_resource_flags(pdev, i) &
2346 PCI_BASE_ADDRESS_SPACE;
2347 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2348 offset += 4;
2349 else {
2350 mem_type = pci_resource_flags(pdev, i) &
2351 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2352 switch (mem_type) {
2353 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2354 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2355 offset += 4; /* 32 bit */
2356 break;
2357 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2358 offset += 8;
2359 break;
2360 default: /* reserved in PCI 2.2 */
2361 printk(KERN_WARNING "Base address is invalid\n");
2362 return -1;
2363 break;
2364 }
2365 }
2366 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2367 return i+1;
2368 }
2369 return -1;
2370 }
2371
2372 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2373 {
2374 ushort subsystem_vendor_id, subsystem_device_id, command;
2375 __u32 board_id, scratchpad = 0;
2376 __u64 cfg_offset;
2377 __u32 cfg_base_addr;
2378 __u64 cfg_base_addr_index;
2379 int i;
2380
2381 /* check to see if controller has been disabled */
2382 /* BEFORE trying to enable it */
2383 (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2384 if(!(command & 0x02))
2385 {
2386 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2387 return(-1);
2388 }
2389
2390 if (pci_enable_device(pdev))
2391 {
2392 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2393 return( -1);
2394 }
2395
2396 subsystem_vendor_id = pdev->subsystem_vendor;
2397 subsystem_device_id = pdev->subsystem_device;
2398 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2399 subsystem_vendor_id);
2400
2401 /* search for our IO range so we can protect it */
2402 for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2403 {
2404 /* is this an IO range */
2405 if( pci_resource_flags(pdev, i) & 0x01 ) {
2406 c->io_mem_addr = pci_resource_start(pdev, i);
2407 c->io_mem_length = pci_resource_end(pdev, i) -
2408 pci_resource_start(pdev, i) +1;
2409 #ifdef CCISS_DEBUG
2410 printk("IO value found base_addr[%d] %lx %lx\n", i,
2411 c->io_mem_addr, c->io_mem_length);
2412 #endif /* CCISS_DEBUG */
2413 /* register the IO range */
2414 if(!request_region( c->io_mem_addr,
2415 c->io_mem_length, "cciss"))
2416 {
2417 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2418 c->io_mem_addr, c->io_mem_length);
2419 c->io_mem_addr= 0;
2420 c->io_mem_length = 0;
2421 }
2422 break;
2423 }
2424 }
2425
2426 #ifdef CCISS_DEBUG
2427 printk("command = %x\n", command);
2428 printk("irq = %x\n", pdev->irq);
2429 printk("board_id = %x\n", board_id);
2430 #endif /* CCISS_DEBUG */
2431
2432 c->intr = pdev->irq;
2433
2434 /*
2435 * Memory base addr is first addr , the second points to the config
2436 * table
2437 */
2438
2439 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2440 #ifdef CCISS_DEBUG
2441 printk("address 0 = %x\n", c->paddr);
2442 #endif /* CCISS_DEBUG */
2443 c->vaddr = remap_pci_mem(c->paddr, 200);
2444
2445 /* Wait for the board to become ready. (PCI hotplug needs this.)
2446 * We poll for up to 120 secs, once per 100ms. */
2447 for (i=0; i < 1200; i++) {
2448 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2449 if (scratchpad == CCISS_FIRMWARE_READY)
2450 break;
2451 set_current_state(TASK_INTERRUPTIBLE);
2452 schedule_timeout(HZ / 10); /* wait 100ms */
2453 }
2454 if (scratchpad != CCISS_FIRMWARE_READY) {
2455 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2456 return -1;
2457 }
2458
2459 /* get the address index number */
2460 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2461 cfg_base_addr &= (__u32) 0x0000ffff;
2462 #ifdef CCISS_DEBUG
2463 printk("cfg base address = %x\n", cfg_base_addr);
2464 #endif /* CCISS_DEBUG */
2465 cfg_base_addr_index =
2466 find_PCI_BAR_index(pdev, cfg_base_addr);
2467 #ifdef CCISS_DEBUG
2468 printk("cfg base address index = %x\n", cfg_base_addr_index);
2469 #endif /* CCISS_DEBUG */
2470 if (cfg_base_addr_index == -1) {
2471 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2472 release_io_mem(c);
2473 return -1;
2474 }
2475
2476 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2477 #ifdef CCISS_DEBUG
2478 printk("cfg offset = %x\n", cfg_offset);
2479 #endif /* CCISS_DEBUG */
2480 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
2481 cfg_base_addr_index) + cfg_offset,
2482 sizeof(CfgTable_struct));
2483 c->board_id = board_id;
2484
2485 #ifdef CCISS_DEBUG
2486 print_cfg_table(c->cfgtable);
2487 #endif /* CCISS_DEBUG */
2488
2489 for(i=0; i<NR_PRODUCTS; i++) {
2490 if (board_id == products[i].board_id) {
2491 c->product_name = products[i].product_name;
2492 c->access = *(products[i].access);
2493 break;
2494 }
2495 }
2496 if (i == NR_PRODUCTS) {
2497 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2498 " to access the Smart Array controller %08lx\n",
2499 (unsigned long)board_id);
2500 return -1;
2501 }
2502 if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
2503 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2504 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2505 (readb(&c->cfgtable->Signature[3]) != 'S') )
2506 {
2507 printk("Does not appear to be a valid CISS config table\n");
2508 return -1;
2509 }
2510
2511 #ifdef CONFIG_X86
2512 {
2513 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2514 __u32 prefetch;
2515 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2516 prefetch |= 0x100;
2517 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2518 }
2519 #endif
2520
2521 #ifdef CCISS_DEBUG
2522 printk("Trying to put board into Simple mode\n");
2523 #endif /* CCISS_DEBUG */
2524 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2525 /* Update the field, and then ring the doorbell */
2526 writel( CFGTBL_Trans_Simple,
2527 &(c->cfgtable->HostWrite.TransportRequest));
2528 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2529
2530 /* under certain very rare conditions, this can take awhile.
2531 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2532 * as we enter this code.) */
2533 for(i=0;i<MAX_CONFIG_WAIT;i++) {
2534 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2535 break;
2536 /* delay and try again */
2537 set_current_state(TASK_INTERRUPTIBLE);
2538 schedule_timeout(10);
2539 }
2540
2541 #ifdef CCISS_DEBUG
2542 printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2543 #endif /* CCISS_DEBUG */
2544 #ifdef CCISS_DEBUG
2545 print_cfg_table(c->cfgtable);
2546 #endif /* CCISS_DEBUG */
2547
2548 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2549 {
2550 printk(KERN_WARNING "cciss: unable to get board into"
2551 " simple mode\n");
2552 return -1;
2553 }
2554 return 0;
2555
2556 }
2557
2558 /*
2559 * Gets information about the local volumes attached to the controller.
2560 */
2561 static void cciss_getgeometry(int cntl_num)
2562 {
2563 ReportLunData_struct *ld_buff;
2564 ReadCapdata_struct *size_buff;
2565 InquiryData_struct *inq_buff;
2566 int return_code;
2567 int i;
2568 int listlength = 0;
2569 __u32 lunid = 0;
2570 int block_size;
2571 int total_size;
2572
2573 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2574 if (ld_buff == NULL)
2575 {
2576 printk(KERN_ERR "cciss: out of memory\n");
2577 return;
2578 }
2579 memset(ld_buff, 0, sizeof(ReportLunData_struct));
2580 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2581 if (size_buff == NULL)
2582 {
2583 printk(KERN_ERR "cciss: out of memory\n");
2584 kfree(ld_buff);
2585 return;
2586 }
2587 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2588 if (inq_buff == NULL)
2589 {
2590 printk(KERN_ERR "cciss: out of memory\n");
2591 kfree(ld_buff);
2592 kfree(size_buff);
2593 return;
2594 }
2595 /* Get the firmware version */
2596 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2597 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2598 if (return_code == IO_OK)
2599 {
2600 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2601 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2602 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2603 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2604 } else /* send command failed */
2605 {
2606 printk(KERN_WARNING "cciss: unable to determine firmware"
2607 " version of controller\n");
2608 }
2609 /* Get the number of logical volumes */
2610 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2611 sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2612
2613 if( return_code == IO_OK)
2614 {
2615 #ifdef CCISS_DEBUG
2616 printk("LUN Data\n--------------------------\n");
2617 #endif /* CCISS_DEBUG */
2618
2619 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2620 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2621 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
2622 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2623 } else /* reading number of logical volumes failed */
2624 {
2625 printk(KERN_WARNING "cciss: report logical volume"
2626 " command failed\n");
2627 listlength = 0;
2628 }
2629 hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2630 if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2631 {
2632 printk(KERN_ERR "ciss: only %d number of logical volumes supported\n",
2633 CISS_MAX_LUN);
2634 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2635 }
2636 #ifdef CCISS_DEBUG
2637 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2638 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2639 ld_buff->LUNListLength[3], hba[cntl_num]->num_luns);
2640 #endif /* CCISS_DEBUG */
2641
2642 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
2643 for(i=0; i< hba[cntl_num]->num_luns; i++)
2644 {
2645
2646 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
2647 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
2648 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
2649 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2650
2651 hba[cntl_num]->drv[i].LunID = lunid;
2652
2653
2654 #ifdef CCISS_DEBUG
2655 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
2656 ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2],
2657 ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID);
2658 #endif /* CCISS_DEBUG */
2659 cciss_read_capacity(cntl_num, i, size_buff, 0,
2660 &total_size, &block_size);
2661 cciss_geometry_inquiry(cntl_num, i, 0, total_size, block_size,
2662 inq_buff, &hba[cntl_num]->drv[i]);
2663 }
2664 kfree(ld_buff);
2665 kfree(size_buff);
2666 kfree(inq_buff);
2667 }
2668
2669 /* Function to find the first free pointer into our hba[] array */
2670 /* Returns -1 if no free entries are left. */
2671 static int alloc_cciss_hba(void)
2672 {
2673 struct gendisk *disk[NWD];
2674 int i, n;
2675 for (n = 0; n < NWD; n++) {
2676 disk[n] = alloc_disk(1 << NWD_SHIFT);
2677 if (!disk[n])
2678 goto out;
2679 }
2680
2681 for(i=0; i< MAX_CTLR; i++) {
2682 if (!hba[i]) {
2683 ctlr_info_t *p;
2684 p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
2685 if (!p)
2686 goto Enomem;
2687 memset(p, 0, sizeof(ctlr_info_t));
2688 for (n = 0; n < NWD; n++)
2689 p->gendisk[n] = disk[n];
2690 hba[i] = p;
2691 return i;
2692 }
2693 }
2694 printk(KERN_WARNING "cciss: This driver supports a maximum"
2695 " of %d controllers.\n", MAX_CTLR);
2696 goto out;
2697 Enomem:
2698 printk(KERN_ERR "cciss: out of memory.\n");
2699 out:
2700 while (n--)
2701 put_disk(disk[n]);
2702 return -1;
2703 }
2704
2705 static void free_hba(int i)
2706 {
2707 ctlr_info_t *p = hba[i];
2708 int n;
2709
2710 hba[i] = NULL;
2711 for (n = 0; n < NWD; n++)
2712 put_disk(p->gendisk[n]);
2713 kfree(p);
2714 }
2715
2716 /*
2717 * This is it. Find all the controllers and register them. I really hate
2718 * stealing all these major device numbers.
2719 * returns the number of block devices registered.
2720 */
2721 static int __devinit cciss_init_one(struct pci_dev *pdev,
2722 const struct pci_device_id *ent)
2723 {
2724 request_queue_t *q;
2725 int i;
2726 int j;
2727 int rc;
2728
2729 printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
2730 " bus %d dev %d func %d\n",
2731 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
2732 PCI_FUNC(pdev->devfn));
2733 i = alloc_cciss_hba();
2734 if(i < 0)
2735 return (-1);
2736 if (cciss_pci_init(hba[i], pdev) != 0)
2737 goto clean1;
2738
2739 sprintf(hba[i]->devname, "cciss%d", i);
2740 hba[i]->ctlr = i;
2741 hba[i]->pdev = pdev;
2742
2743 /* configure PCI DMA stuff */
2744 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
2745 printk("cciss: using DAC cycles\n");
2746 else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2747 printk("cciss: not using DAC cycles\n");
2748 else {
2749 printk("cciss: no suitable DMA available\n");
2750 goto clean1;
2751 }
2752
2753 /*
2754 * register with the major number, or get a dynamic major number
2755 * by passing 0 as argument. This is done for greater than
2756 * 8 controller support.
2757 */
2758 if (i < MAX_CTLR_ORIG)
2759 hba[i]->major = MAJOR_NR + i;
2760 rc = register_blkdev(hba[i]->major, hba[i]->devname);
2761 if(rc == -EBUSY || rc == -EINVAL) {
2762 printk(KERN_ERR
2763 "cciss: Unable to get major number %d for %s "
2764 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
2765 goto clean1;
2766 }
2767 else {
2768 if (i >= MAX_CTLR_ORIG)
2769 hba[i]->major = rc;
2770 }
2771
2772 /* make sure the board interrupts are off */
2773 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
2774 if( request_irq(hba[i]->intr, do_cciss_intr,
2775 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
2776 hba[i]->devname, hba[i])) {
2777 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
2778 hba[i]->intr, hba[i]->devname);
2779 goto clean2;
2780 }
2781 hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
2782 hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
2783 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2784 &(hba[i]->cmd_pool_dhandle));
2785 hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
2786 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2787 &(hba[i]->errinfo_pool_dhandle));
2788 if((hba[i]->cmd_pool_bits == NULL)
2789 || (hba[i]->cmd_pool == NULL)
2790 || (hba[i]->errinfo_pool == NULL)) {
2791 printk( KERN_ERR "cciss: out of memory");
2792 goto clean4;
2793 }
2794
2795 spin_lock_init(&hba[i]->lock);
2796 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
2797 if (!q)
2798 goto clean4;
2799
2800 q->backing_dev_info.ra_pages = READ_AHEAD;
2801 hba[i]->queue = q;
2802 q->queuedata = hba[i];
2803
2804 /* Initialize the pdev driver private data.
2805 have it point to hba[i]. */
2806 pci_set_drvdata(pdev, hba[i]);
2807 /* command and error info recs zeroed out before
2808 they are used */
2809 memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
2810
2811 #ifdef CCISS_DEBUG
2812 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
2813 #endif /* CCISS_DEBUG */
2814
2815 cciss_getgeometry(i);
2816
2817 cciss_scsi_setup(i);
2818
2819 /* Turn the interrupts on so we can service requests */
2820 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
2821
2822 cciss_procinit(i);
2823
2824 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
2825
2826 /* This is a hardware imposed limit. */
2827 blk_queue_max_hw_segments(q, MAXSGENTRIES);
2828
2829 /* This is a limit in the driver and could be eliminated. */
2830 blk_queue_max_phys_segments(q, MAXSGENTRIES);
2831
2832 blk_queue_max_sectors(q, 512);
2833
2834
2835 for(j=0; j<NWD; j++) {
2836 drive_info_struct *drv = &(hba[i]->drv[j]);
2837 struct gendisk *disk = hba[i]->gendisk[j];
2838
2839 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
2840 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
2841 disk->major = hba[i]->major;
2842 disk->first_minor = j << NWD_SHIFT;
2843 disk->fops = &cciss_fops;
2844 disk->queue = hba[i]->queue;
2845 disk->private_data = drv;
2846 /* we must register the controller even if no disks exist */
2847 /* this is for the online array utilities */
2848 if(!drv->heads && j)
2849 continue;
2850 blk_queue_hardsect_size(hba[i]->queue, drv->block_size);
2851 set_capacity(disk, drv->nr_blocks);
2852 add_disk(disk);
2853 }
2854 return(1);
2855
2856 clean4:
2857 if(hba[i]->cmd_pool_bits)
2858 kfree(hba[i]->cmd_pool_bits);
2859 if(hba[i]->cmd_pool)
2860 pci_free_consistent(hba[i]->pdev,
2861 NR_CMDS * sizeof(CommandList_struct),
2862 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2863 if(hba[i]->errinfo_pool)
2864 pci_free_consistent(hba[i]->pdev,
2865 NR_CMDS * sizeof( ErrorInfo_struct),
2866 hba[i]->errinfo_pool,
2867 hba[i]->errinfo_pool_dhandle);
2868 free_irq(hba[i]->intr, hba[i]);
2869 clean2:
2870 unregister_blkdev(hba[i]->major, hba[i]->devname);
2871 clean1:
2872 release_io_mem(hba[i]);
2873 free_hba(i);
2874 return(-1);
2875 }
2876
2877 static void __devexit cciss_remove_one (struct pci_dev *pdev)
2878 {
2879 ctlr_info_t *tmp_ptr;
2880 int i, j;
2881 char flush_buf[4];
2882 int return_code;
2883
2884 if (pci_get_drvdata(pdev) == NULL)
2885 {
2886 printk( KERN_ERR "cciss: Unable to remove device \n");
2887 return;
2888 }
2889 tmp_ptr = pci_get_drvdata(pdev);
2890 i = tmp_ptr->ctlr;
2891 if (hba[i] == NULL)
2892 {
2893 printk(KERN_ERR "cciss: device appears to "
2894 "already be removed \n");
2895 return;
2896 }
2897 /* Turn board interrupts off and send the flush cache command */
2898 /* sendcmd will turn off interrupt, and send the flush...
2899 * To write all data in the battery backed cache to disks */
2900 memset(flush_buf, 0, 4);
2901 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
2902 TYPE_CMD);
2903 if(return_code != IO_OK)
2904 {
2905 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
2906 i);
2907 }
2908 free_irq(hba[i]->intr, hba[i]);
2909 pci_set_drvdata(pdev, NULL);
2910 iounmap(hba[i]->vaddr);
2911 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
2912 unregister_blkdev(hba[i]->major, hba[i]->devname);
2913 remove_proc_entry(hba[i]->devname, proc_cciss);
2914
2915 /* remove it from the disk list */
2916 for (j = 0; j < NWD; j++) {
2917 struct gendisk *disk = hba[i]->gendisk[j];
2918 if (disk->flags & GENHD_FL_UP)
2919 del_gendisk(disk);
2920 }
2921
2922 blk_cleanup_queue(hba[i]->queue);
2923 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2924 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2925 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2926 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
2927 kfree(hba[i]->cmd_pool_bits);
2928 release_io_mem(hba[i]);
2929 free_hba(i);
2930 }
2931
2932 static struct pci_driver cciss_pci_driver = {
2933 .name = "cciss",
2934 .probe = cciss_init_one,
2935 .remove = __devexit_p(cciss_remove_one),
2936 .id_table = cciss_pci_device_id, /* id_table */
2937 };
2938
2939 /*
2940 * This is it. Register the PCI driver information for the cards we control
2941 * the OS will call our registered routines when it finds one of our cards.
2942 */
2943 static int __init cciss_init(void)
2944 {
2945 printk(KERN_INFO DRIVER_NAME "\n");
2946
2947 /* Register for our PCI devices */
2948 return pci_module_init(&cciss_pci_driver);
2949 }
2950
2951 static void __exit cciss_cleanup(void)
2952 {
2953 int i;
2954
2955 pci_unregister_driver(&cciss_pci_driver);
2956 /* double check that all controller entrys have been removed */
2957 for (i=0; i< MAX_CTLR; i++)
2958 {
2959 if (hba[i] != NULL)
2960 {
2961 printk(KERN_WARNING "cciss: had to remove"
2962 " controller %d\n", i);
2963 cciss_remove_one(hba[i]->pdev);
2964 }
2965 }
2966 remove_proc_entry("cciss", proc_root_driver);
2967 }
2968
2969 module_init(cciss_init);
2970 module_exit(cciss_cleanup);
Verdex Pro support