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kbuild: fix silentoldconfig with make O=
[linux-2.6/verdex.git] / drivers / block / cciss.c
blob28f2c177a54167a0ce7d3bd9e3f1dbe7ac1d7995
1 /*
2 * Disk Array driver for HP SA 5xxx and 6xxx Controllers
3 * Copyright 2000, 2005 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 E300");
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_CISSC,
89 0x103c, 0x3231, 0, 0, 0},
90 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
91 0x103c, 0x3233, 0, 0, 0},
92 {0,}
93 };
94 MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
95
96 #define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
97
98 /* board_id = Subsystem Device ID & Vendor ID
99 * product = Marketing Name for the board
100 * access = Address of the struct of function pointers
101 */
102 static struct board_type products[] = {
103 { 0x40700E11, "Smart Array 5300", &SA5_access },
104 { 0x40800E11, "Smart Array 5i", &SA5B_access},
105 { 0x40820E11, "Smart Array 532", &SA5B_access},
106 { 0x40830E11, "Smart Array 5312", &SA5B_access},
107 { 0x409A0E11, "Smart Array 641", &SA5_access},
108 { 0x409B0E11, "Smart Array 642", &SA5_access},
109 { 0x409C0E11, "Smart Array 6400", &SA5_access},
110 { 0x409D0E11, "Smart Array 6400 EM", &SA5_access},
111 { 0x40910E11, "Smart Array 6i", &SA5_access},
112 { 0x3225103C, "Smart Array P600", &SA5_access},
113 { 0x3223103C, "Smart Array P800", &SA5_access},
114 { 0x3231103C, "Smart Array E400", &SA5_access},
115 { 0x3233103C, "Smart Array E300", &SA5_access},
116 };
117
118 /* How long to wait (in millesconds) for board to go into simple mode */
119 #define MAX_CONFIG_WAIT 30000
120 #define MAX_IOCTL_CONFIG_WAIT 1000
121
122 /*define how many times we will try a command because of bus resets */
123 #define MAX_CMD_RETRIES 3
124
125 #define READ_AHEAD 1024
126 #define NR_CMDS 384 /* #commands that can be outstanding */
127 #define MAX_CTLR 32
128
129 /* Originally cciss driver only supports 8 major numbers */
130 #define MAX_CTLR_ORIG 8
131
132
133 static ctlr_info_t *hba[MAX_CTLR];
134
135 static void do_cciss_request(request_queue_t *q);
136 static int cciss_open(struct inode *inode, struct file *filep);
137 static int cciss_release(struct inode *inode, struct file *filep);
138 static int cciss_ioctl(struct inode *inode, struct file *filep,
139 unsigned int cmd, unsigned long arg);
140
141 static int revalidate_allvol(ctlr_info_t *host);
142 static int cciss_revalidate(struct gendisk *disk);
143 static int deregister_disk(struct gendisk *disk);
144 static int register_new_disk(ctlr_info_t *h);
145
146 static void cciss_getgeometry(int cntl_num);
147
148 static void start_io( ctlr_info_t *h);
149 static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
150 unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
151 unsigned char *scsi3addr, int cmd_type);
152
153 #ifdef CONFIG_PROC_FS
154 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
155 int length, int *eof, void *data);
156 static void cciss_procinit(int i);
157 #else
158 static void cciss_procinit(int i) {}
159 #endif /* CONFIG_PROC_FS */
160
161 #ifdef CONFIG_COMPAT
162 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
163 #endif
164
165 static struct block_device_operations cciss_fops = {
166 .owner = THIS_MODULE,
167 .open = cciss_open,
168 .release = cciss_release,
169 .ioctl = cciss_ioctl,
170 #ifdef CONFIG_COMPAT
171 .compat_ioctl = cciss_compat_ioctl,
172 #endif
173 .revalidate_disk= cciss_revalidate,
174 };
175
176 /*
177 * Enqueuing and dequeuing functions for cmdlists.
178 */
179 static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
180 {
181 if (*Qptr == NULL) {
182 *Qptr = c;
183 c->next = c->prev = c;
184 } else {
185 c->prev = (*Qptr)->prev;
186 c->next = (*Qptr);
187 (*Qptr)->prev->next = c;
188 (*Qptr)->prev = c;
189 }
190 }
191
192 static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
193 CommandList_struct *c)
194 {
195 if (c && c->next != c) {
196 if (*Qptr == c) *Qptr = c->next;
197 c->prev->next = c->next;
198 c->next->prev = c->prev;
199 } else {
200 *Qptr = NULL;
201 }
202 return c;
203 }
204
205 #include "cciss_scsi.c" /* For SCSI tape support */
206
207 #ifdef CONFIG_PROC_FS
208
209 /*
210 * Report information about this controller.
211 */
212 #define ENG_GIG 1000000000
213 #define ENG_GIG_FACTOR (ENG_GIG/512)
214 #define RAID_UNKNOWN 6
215 static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
216 "UNKNOWN"};
217
218 static struct proc_dir_entry *proc_cciss;
219
220 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
221 int length, int *eof, void *data)
222 {
223 off_t pos = 0;
224 off_t len = 0;
225 int size, i, ctlr;
226 ctlr_info_t *h = (ctlr_info_t*)data;
227 drive_info_struct *drv;
228 unsigned long flags;
229 sector_t vol_sz, vol_sz_frac;
230
231 ctlr = h->ctlr;
232
233 /* prevent displaying bogus info during configuration
234 * or deconfiguration of a logical volume
235 */
236 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
237 if (h->busy_configuring) {
238 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
239 return -EBUSY;
240 }
241 h->busy_configuring = 1;
242 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
243
244 size = sprintf(buffer, "%s: HP %s Controller\n"
245 "Board ID: 0x%08lx\n"
246 "Firmware Version: %c%c%c%c\n"
247 "IRQ: %d\n"
248 "Logical drives: %d\n"
249 "Current Q depth: %d\n"
250 "Current # commands on controller: %d\n"
251 "Max Q depth since init: %d\n"
252 "Max # commands on controller since init: %d\n"
253 "Max SG entries since init: %d\n\n",
254 h->devname,
255 h->product_name,
256 (unsigned long)h->board_id,
257 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
258 (unsigned int)h->intr,
259 h->num_luns,
260 h->Qdepth, h->commands_outstanding,
261 h->maxQsinceinit, h->max_outstanding, h->maxSG);
262
263 pos += size; len += size;
264 cciss_proc_tape_report(ctlr, buffer, &pos, &len);
265 for(i=0; i<=h->highest_lun; i++) {
266
267 drv = &h->drv[i];
268 if (drv->block_size == 0)
269 continue;
270
271 vol_sz = drv->nr_blocks;
272 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
273 vol_sz_frac *= 100;
274 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
275
276 if (drv->raid_level > 5)
277 drv->raid_level = RAID_UNKNOWN;
278 size = sprintf(buffer+len, "cciss/c%dd%d:"
279 "\t%4u.%02uGB\tRAID %s\n",
280 ctlr, i, (int)vol_sz, (int)vol_sz_frac,
281 raid_label[drv->raid_level]);
282 pos += size; len += size;
283 }
284
285 *eof = 1;
286 *start = buffer+offset;
287 len -= offset;
288 if (len>length)
289 len = length;
290 h->busy_configuring = 0;
291 return len;
292 }
293
294 static int
295 cciss_proc_write(struct file *file, const char __user *buffer,
296 unsigned long count, void *data)
297 {
298 unsigned char cmd[80];
299 int len;
300 #ifdef CONFIG_CISS_SCSI_TAPE
301 ctlr_info_t *h = (ctlr_info_t *) data;
302 int rc;
303 #endif
304
305 if (count > sizeof(cmd)-1) return -EINVAL;
306 if (copy_from_user(cmd, buffer, count)) return -EFAULT;
307 cmd[count] = '\0';
308 len = strlen(cmd); // above 3 lines ensure safety
309 if (len && cmd[len-1] == '\n')
310 cmd[--len] = '\0';
311 # ifdef CONFIG_CISS_SCSI_TAPE
312 if (strcmp("engage scsi", cmd)==0) {
313 rc = cciss_engage_scsi(h->ctlr);
314 if (rc != 0) return -rc;
315 return count;
316 }
317 /* might be nice to have "disengage" too, but it's not
318 safely possible. (only 1 module use count, lock issues.) */
319 # endif
320 return -EINVAL;
321 }
322
323 /*
324 * Get us a file in /proc/cciss that says something about each controller.
325 * Create /proc/cciss if it doesn't exist yet.
326 */
327 static void __devinit cciss_procinit(int i)
328 {
329 struct proc_dir_entry *pde;
330
331 if (proc_cciss == NULL) {
332 proc_cciss = proc_mkdir("cciss", proc_root_driver);
333 if (!proc_cciss)
334 return;
335 }
336
337 pde = create_proc_read_entry(hba[i]->devname,
338 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
339 proc_cciss, cciss_proc_get_info, hba[i]);
340 pde->write_proc = cciss_proc_write;
341 }
342 #endif /* CONFIG_PROC_FS */
343
344 /*
345 * For operations that cannot sleep, a command block is allocated at init,
346 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
347 * which ones are free or in use. For operations that can wait for kmalloc
348 * to possible sleep, this routine can be called with get_from_pool set to 0.
349 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
350 */
351 static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
352 {
353 CommandList_struct *c;
354 int i;
355 u64bit temp64;
356 dma_addr_t cmd_dma_handle, err_dma_handle;
357
358 if (!get_from_pool)
359 {
360 c = (CommandList_struct *) pci_alloc_consistent(
361 h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
362 if(c==NULL)
363 return NULL;
364 memset(c, 0, sizeof(CommandList_struct));
365
366 c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
367 h->pdev, sizeof(ErrorInfo_struct),
368 &err_dma_handle);
369
370 if (c->err_info == NULL)
371 {
372 pci_free_consistent(h->pdev,
373 sizeof(CommandList_struct), c, cmd_dma_handle);
374 return NULL;
375 }
376 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
377 } else /* get it out of the controllers pool */
378 {
379 do {
380 i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
381 if (i == NR_CMDS)
382 return NULL;
383 } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
384 #ifdef CCISS_DEBUG
385 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
386 #endif
387 c = h->cmd_pool + i;
388 memset(c, 0, sizeof(CommandList_struct));
389 cmd_dma_handle = h->cmd_pool_dhandle
390 + i*sizeof(CommandList_struct);
391 c->err_info = h->errinfo_pool + i;
392 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
393 err_dma_handle = h->errinfo_pool_dhandle
394 + i*sizeof(ErrorInfo_struct);
395 h->nr_allocs++;
396 }
397
398 c->busaddr = (__u32) cmd_dma_handle;
399 temp64.val = (__u64) err_dma_handle;
400 c->ErrDesc.Addr.lower = temp64.val32.lower;
401 c->ErrDesc.Addr.upper = temp64.val32.upper;
402 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
403
404 c->ctlr = h->ctlr;
405 return c;
406
407
408 }
409
410 /*
411 * Frees a command block that was previously allocated with cmd_alloc().
412 */
413 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
414 {
415 int i;
416 u64bit temp64;
417
418 if( !got_from_pool)
419 {
420 temp64.val32.lower = c->ErrDesc.Addr.lower;
421 temp64.val32.upper = c->ErrDesc.Addr.upper;
422 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
423 c->err_info, (dma_addr_t) temp64.val);
424 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
425 c, (dma_addr_t) c->busaddr);
426 } else
427 {
428 i = c - h->cmd_pool;
429 clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
430 h->nr_frees++;
431 }
432 }
433
434 static inline ctlr_info_t *get_host(struct gendisk *disk)
435 {
436 return disk->queue->queuedata;
437 }
438
439 static inline drive_info_struct *get_drv(struct gendisk *disk)
440 {
441 return disk->private_data;
442 }
443
444 /*
445 * Open. Make sure the device is really there.
446 */
447 static int cciss_open(struct inode *inode, struct file *filep)
448 {
449 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
450 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
451
452 #ifdef CCISS_DEBUG
453 printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
454 #endif /* CCISS_DEBUG */
455
456 /*
457 * Root is allowed to open raw volume zero even if it's not configured
458 * so array config can still work. Root is also allowed to open any
459 * volume that has a LUN ID, so it can issue IOCTL to reread the
460 * disk information. I don't think I really like this
461 * but I'm already using way to many device nodes to claim another one
462 * for "raw controller".
463 */
464 if (drv->nr_blocks == 0) {
465 if (iminor(inode) != 0) { /* not node 0? */
466 /* if not node 0 make sure it is a partition = 0 */
467 if (iminor(inode) & 0x0f) {
468 return -ENXIO;
469 /* if it is, make sure we have a LUN ID */
470 } else if (drv->LunID == 0) {
471 return -ENXIO;
472 }
473 }
474 if (!capable(CAP_SYS_ADMIN))
475 return -EPERM;
476 }
477 drv->usage_count++;
478 host->usage_count++;
479 return 0;
480 }
481 /*
482 * Close. Sync first.
483 */
484 static int cciss_release(struct inode *inode, struct file *filep)
485 {
486 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
487 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
488
489 #ifdef CCISS_DEBUG
490 printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
491 #endif /* CCISS_DEBUG */
492
493 drv->usage_count--;
494 host->usage_count--;
495 return 0;
496 }
497
498 #ifdef CONFIG_COMPAT
499
500 static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
501 {
502 int ret;
503 lock_kernel();
504 ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
505 unlock_kernel();
506 return ret;
507 }
508
509 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
510 static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
511
512 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
513 {
514 switch (cmd) {
515 case CCISS_GETPCIINFO:
516 case CCISS_GETINTINFO:
517 case CCISS_SETINTINFO:
518 case CCISS_GETNODENAME:
519 case CCISS_SETNODENAME:
520 case CCISS_GETHEARTBEAT:
521 case CCISS_GETBUSTYPES:
522 case CCISS_GETFIRMVER:
523 case CCISS_GETDRIVVER:
524 case CCISS_REVALIDVOLS:
525 case CCISS_DEREGDISK:
526 case CCISS_REGNEWDISK:
527 case CCISS_REGNEWD:
528 case CCISS_RESCANDISK:
529 case CCISS_GETLUNINFO:
530 return do_ioctl(f, cmd, arg);
531
532 case CCISS_PASSTHRU32:
533 return cciss_ioctl32_passthru(f, cmd, arg);
534 case CCISS_BIG_PASSTHRU32:
535 return cciss_ioctl32_big_passthru(f, cmd, arg);
536
537 default:
538 return -ENOIOCTLCMD;
539 }
540 }
541
542 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
543 {
544 IOCTL32_Command_struct __user *arg32 =
545 (IOCTL32_Command_struct __user *) arg;
546 IOCTL_Command_struct arg64;
547 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
548 int err;
549 u32 cp;
550
551 err = 0;
552 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
553 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
554 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
555 err |= get_user(arg64.buf_size, &arg32->buf_size);
556 err |= get_user(cp, &arg32->buf);
557 arg64.buf = compat_ptr(cp);
558 err |= copy_to_user(p, &arg64, sizeof(arg64));
559
560 if (err)
561 return -EFAULT;
562
563 err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
564 if (err)
565 return err;
566 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
567 if (err)
568 return -EFAULT;
569 return err;
570 }
571
572 static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
573 {
574 BIG_IOCTL32_Command_struct __user *arg32 =
575 (BIG_IOCTL32_Command_struct __user *) arg;
576 BIG_IOCTL_Command_struct arg64;
577 BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
578 int err;
579 u32 cp;
580
581 err = 0;
582 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
583 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
584 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
585 err |= get_user(arg64.buf_size, &arg32->buf_size);
586 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
587 err |= get_user(cp, &arg32->buf);
588 arg64.buf = compat_ptr(cp);
589 err |= copy_to_user(p, &arg64, sizeof(arg64));
590
591 if (err)
592 return -EFAULT;
593
594 err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
595 if (err)
596 return err;
597 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
598 if (err)
599 return -EFAULT;
600 return err;
601 }
602 #endif
603 /*
604 * ioctl
605 */
606 static int cciss_ioctl(struct inode *inode, struct file *filep,
607 unsigned int cmd, unsigned long arg)
608 {
609 struct block_device *bdev = inode->i_bdev;
610 struct gendisk *disk = bdev->bd_disk;
611 ctlr_info_t *host = get_host(disk);
612 drive_info_struct *drv = get_drv(disk);
613 int ctlr = host->ctlr;
614 void __user *argp = (void __user *)arg;
615
616 #ifdef CCISS_DEBUG
617 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
618 #endif /* CCISS_DEBUG */
619
620 switch(cmd) {
621 case HDIO_GETGEO:
622 {
623 struct hd_geometry driver_geo;
624 if (drv->cylinders) {
625 driver_geo.heads = drv->heads;
626 driver_geo.sectors = drv->sectors;
627 driver_geo.cylinders = drv->cylinders;
628 } else
629 return -ENXIO;
630 driver_geo.start= get_start_sect(inode->i_bdev);
631 if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry)))
632 return -EFAULT;
633 return(0);
634 }
635
636 case CCISS_GETPCIINFO:
637 {
638 cciss_pci_info_struct pciinfo;
639
640 if (!arg) return -EINVAL;
641 pciinfo.domain = pci_domain_nr(host->pdev->bus);
642 pciinfo.bus = host->pdev->bus->number;
643 pciinfo.dev_fn = host->pdev->devfn;
644 pciinfo.board_id = host->board_id;
645 if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct )))
646 return -EFAULT;
647 return(0);
648 }
649 case CCISS_GETINTINFO:
650 {
651 cciss_coalint_struct intinfo;
652 if (!arg) return -EINVAL;
653 intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
654 intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
655 if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
656 return -EFAULT;
657 return(0);
658 }
659 case CCISS_SETINTINFO:
660 {
661 cciss_coalint_struct intinfo;
662 unsigned long flags;
663 int i;
664
665 if (!arg) return -EINVAL;
666 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
667 if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
668 return -EFAULT;
669 if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
670
671 {
672 // printk("cciss_ioctl: delay and count cannot be 0\n");
673 return( -EINVAL);
674 }
675 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
676 /* Update the field, and then ring the doorbell */
677 writel( intinfo.delay,
678 &(host->cfgtable->HostWrite.CoalIntDelay));
679 writel( intinfo.count,
680 &(host->cfgtable->HostWrite.CoalIntCount));
681 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
682
683 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
684 if (!(readl(host->vaddr + SA5_DOORBELL)
685 & CFGTBL_ChangeReq))
686 break;
687 /* delay and try again */
688 udelay(1000);
689 }
690 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
691 if (i >= MAX_IOCTL_CONFIG_WAIT)
692 return -EAGAIN;
693 return(0);
694 }
695 case CCISS_GETNODENAME:
696 {
697 NodeName_type NodeName;
698 int i;
699
700 if (!arg) return -EINVAL;
701 for(i=0;i<16;i++)
702 NodeName[i] = readb(&host->cfgtable->ServerName[i]);
703 if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
704 return -EFAULT;
705 return(0);
706 }
707 case CCISS_SETNODENAME:
708 {
709 NodeName_type NodeName;
710 unsigned long flags;
711 int i;
712
713 if (!arg) return -EINVAL;
714 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
715
716 if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
717 return -EFAULT;
718
719 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
720
721 /* Update the field, and then ring the doorbell */
722 for(i=0;i<16;i++)
723 writeb( NodeName[i], &host->cfgtable->ServerName[i]);
724
725 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
726
727 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
728 if (!(readl(host->vaddr + SA5_DOORBELL)
729 & CFGTBL_ChangeReq))
730 break;
731 /* delay and try again */
732 udelay(1000);
733 }
734 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
735 if (i >= MAX_IOCTL_CONFIG_WAIT)
736 return -EAGAIN;
737 return(0);
738 }
739
740 case CCISS_GETHEARTBEAT:
741 {
742 Heartbeat_type heartbeat;
743
744 if (!arg) return -EINVAL;
745 heartbeat = readl(&host->cfgtable->HeartBeat);
746 if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
747 return -EFAULT;
748 return(0);
749 }
750 case CCISS_GETBUSTYPES:
751 {
752 BusTypes_type BusTypes;
753
754 if (!arg) return -EINVAL;
755 BusTypes = readl(&host->cfgtable->BusTypes);
756 if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
757 return -EFAULT;
758 return(0);
759 }
760 case CCISS_GETFIRMVER:
761 {
762 FirmwareVer_type firmware;
763
764 if (!arg) return -EINVAL;
765 memcpy(firmware, host->firm_ver, 4);
766
767 if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
768 return -EFAULT;
769 return(0);
770 }
771 case CCISS_GETDRIVVER:
772 {
773 DriverVer_type DriverVer = DRIVER_VERSION;
774
775 if (!arg) return -EINVAL;
776
777 if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
778 return -EFAULT;
779 return(0);
780 }
781
782 case CCISS_REVALIDVOLS:
783 if (bdev != bdev->bd_contains || drv != host->drv)
784 return -ENXIO;
785 return revalidate_allvol(host);
786
787 case CCISS_GETLUNINFO: {
788 LogvolInfo_struct luninfo;
789
790 luninfo.LunID = drv->LunID;
791 luninfo.num_opens = drv->usage_count;
792 luninfo.num_parts = 0;
793 if (copy_to_user(argp, &luninfo,
794 sizeof(LogvolInfo_struct)))
795 return -EFAULT;
796 return(0);
797 }
798 case CCISS_DEREGDISK:
799 return deregister_disk(disk);
800
801 case CCISS_REGNEWD:
802 return register_new_disk(host);
803
804 case CCISS_PASSTHRU:
805 {
806 IOCTL_Command_struct iocommand;
807 CommandList_struct *c;
808 char *buff = NULL;
809 u64bit temp64;
810 unsigned long flags;
811 DECLARE_COMPLETION(wait);
812
813 if (!arg) return -EINVAL;
814
815 if (!capable(CAP_SYS_RAWIO)) return -EPERM;
816
817 if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
818 return -EFAULT;
819 if((iocommand.buf_size < 1) &&
820 (iocommand.Request.Type.Direction != XFER_NONE))
821 {
822 return -EINVAL;
823 }
824 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
825 /* Check kmalloc limits */
826 if(iocommand.buf_size > 128000)
827 return -EINVAL;
828 #endif
829 if(iocommand.buf_size > 0)
830 {
831 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
832 if( buff == NULL)
833 return -EFAULT;
834 }
835 if (iocommand.Request.Type.Direction == XFER_WRITE)
836 {
837 /* Copy the data into the buffer we created */
838 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
839 {
840 kfree(buff);
841 return -EFAULT;
842 }
843 } else {
844 memset(buff, 0, iocommand.buf_size);
845 }
846 if ((c = cmd_alloc(host , 0)) == NULL)
847 {
848 kfree(buff);
849 return -ENOMEM;
850 }
851 // Fill in the command type
852 c->cmd_type = CMD_IOCTL_PEND;
853 // Fill in Command Header
854 c->Header.ReplyQueue = 0; // unused in simple mode
855 if( iocommand.buf_size > 0) // buffer to fill
856 {
857 c->Header.SGList = 1;
858 c->Header.SGTotal= 1;
859 } else // no buffers to fill
860 {
861 c->Header.SGList = 0;
862 c->Header.SGTotal= 0;
863 }
864 c->Header.LUN = iocommand.LUN_info;
865 c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
866
867 // Fill in Request block
868 c->Request = iocommand.Request;
869
870 // Fill in the scatter gather information
871 if (iocommand.buf_size > 0 )
872 {
873 temp64.val = pci_map_single( host->pdev, buff,
874 iocommand.buf_size,
875 PCI_DMA_BIDIRECTIONAL);
876 c->SG[0].Addr.lower = temp64.val32.lower;
877 c->SG[0].Addr.upper = temp64.val32.upper;
878 c->SG[0].Len = iocommand.buf_size;
879 c->SG[0].Ext = 0; // we are not chaining
880 }
881 c->waiting = &wait;
882
883 /* Put the request on the tail of the request queue */
884 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
885 addQ(&host->reqQ, c);
886 host->Qdepth++;
887 start_io(host);
888 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
889
890 wait_for_completion(&wait);
891
892 /* unlock the buffers from DMA */
893 temp64.val32.lower = c->SG[0].Addr.lower;
894 temp64.val32.upper = c->SG[0].Addr.upper;
895 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
896 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
897
898 /* Copy the error information out */
899 iocommand.error_info = *(c->err_info);
900 if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
901 {
902 kfree(buff);
903 cmd_free(host, c, 0);
904 return( -EFAULT);
905 }
906
907 if (iocommand.Request.Type.Direction == XFER_READ)
908 {
909 /* Copy the data out of the buffer we created */
910 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
911 {
912 kfree(buff);
913 cmd_free(host, c, 0);
914 return -EFAULT;
915 }
916 }
917 kfree(buff);
918 cmd_free(host, c, 0);
919 return(0);
920 }
921 case CCISS_BIG_PASSTHRU: {
922 BIG_IOCTL_Command_struct *ioc;
923 CommandList_struct *c;
924 unsigned char **buff = NULL;
925 int *buff_size = NULL;
926 u64bit temp64;
927 unsigned long flags;
928 BYTE sg_used = 0;
929 int status = 0;
930 int i;
931 DECLARE_COMPLETION(wait);
932 __u32 left;
933 __u32 sz;
934 BYTE __user *data_ptr;
935
936 if (!arg)
937 return -EINVAL;
938 if (!capable(CAP_SYS_RAWIO))
939 return -EPERM;
940 ioc = (BIG_IOCTL_Command_struct *)
941 kmalloc(sizeof(*ioc), GFP_KERNEL);
942 if (!ioc) {
943 status = -ENOMEM;
944 goto cleanup1;
945 }
946 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
947 status = -EFAULT;
948 goto cleanup1;
949 }
950 if ((ioc->buf_size < 1) &&
951 (ioc->Request.Type.Direction != XFER_NONE)) {
952 status = -EINVAL;
953 goto cleanup1;
954 }
955 /* Check kmalloc limits using all SGs */
956 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
957 status = -EINVAL;
958 goto cleanup1;
959 }
960 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
961 status = -EINVAL;
962 goto cleanup1;
963 }
964 buff = (unsigned char **) kmalloc(MAXSGENTRIES *
965 sizeof(char *), GFP_KERNEL);
966 if (!buff) {
967 status = -ENOMEM;
968 goto cleanup1;
969 }
970 memset(buff, 0, MAXSGENTRIES);
971 buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
972 GFP_KERNEL);
973 if (!buff_size) {
974 status = -ENOMEM;
975 goto cleanup1;
976 }
977 left = ioc->buf_size;
978 data_ptr = ioc->buf;
979 while (left) {
980 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
981 buff_size[sg_used] = sz;
982 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
983 if (buff[sg_used] == NULL) {
984 status = -ENOMEM;
985 goto cleanup1;
986 }
987 if (ioc->Request.Type.Direction == XFER_WRITE &&
988 copy_from_user(buff[sg_used], data_ptr, sz)) {
989 status = -ENOMEM;
990 goto cleanup1;
991 } else {
992 memset(buff[sg_used], 0, sz);
993 }
994 left -= sz;
995 data_ptr += sz;
996 sg_used++;
997 }
998 if ((c = cmd_alloc(host , 0)) == NULL) {
999 status = -ENOMEM;
1000 goto cleanup1;
1001 }
1002 c->cmd_type = CMD_IOCTL_PEND;
1003 c->Header.ReplyQueue = 0;
1004
1005 if( ioc->buf_size > 0) {
1006 c->Header.SGList = sg_used;
1007 c->Header.SGTotal= sg_used;
1008 } else {
1009 c->Header.SGList = 0;
1010 c->Header.SGTotal= 0;
1011 }
1012 c->Header.LUN = ioc->LUN_info;
1013 c->Header.Tag.lower = c->busaddr;
1014
1015 c->Request = ioc->Request;
1016 if (ioc->buf_size > 0 ) {
1017 int i;
1018 for(i=0; i<sg_used; i++) {
1019 temp64.val = pci_map_single( host->pdev, buff[i],
1020 buff_size[i],
1021 PCI_DMA_BIDIRECTIONAL);
1022 c->SG[i].Addr.lower = temp64.val32.lower;
1023 c->SG[i].Addr.upper = temp64.val32.upper;
1024 c->SG[i].Len = buff_size[i];
1025 c->SG[i].Ext = 0; /* we are not chaining */
1026 }
1027 }
1028 c->waiting = &wait;
1029 /* Put the request on the tail of the request queue */
1030 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1031 addQ(&host->reqQ, c);
1032 host->Qdepth++;
1033 start_io(host);
1034 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1035 wait_for_completion(&wait);
1036 /* unlock the buffers from DMA */
1037 for(i=0; i<sg_used; i++) {
1038 temp64.val32.lower = c->SG[i].Addr.lower;
1039 temp64.val32.upper = c->SG[i].Addr.upper;
1040 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
1041 buff_size[i], PCI_DMA_BIDIRECTIONAL);
1042 }
1043 /* Copy the error information out */
1044 ioc->error_info = *(c->err_info);
1045 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1046 cmd_free(host, c, 0);
1047 status = -EFAULT;
1048 goto cleanup1;
1049 }
1050 if (ioc->Request.Type.Direction == XFER_READ) {
1051 /* Copy the data out of the buffer we created */
1052 BYTE __user *ptr = ioc->buf;
1053 for(i=0; i< sg_used; i++) {
1054 if (copy_to_user(ptr, buff[i], buff_size[i])) {
1055 cmd_free(host, c, 0);
1056 status = -EFAULT;
1057 goto cleanup1;
1058 }
1059 ptr += buff_size[i];
1060 }
1061 }
1062 cmd_free(host, c, 0);
1063 status = 0;
1064 cleanup1:
1065 if (buff) {
1066 for(i=0; i<sg_used; i++)
1067 if(buff[i] != NULL)
1068 kfree(buff[i]);
1069 kfree(buff);
1070 }
1071 if (buff_size)
1072 kfree(buff_size);
1073 if (ioc)
1074 kfree(ioc);
1075 return(status);
1076 }
1077 default:
1078 return -ENOTTY;
1079 }
1080
1081 }
1082
1083 /*
1084 * revalidate_allvol is for online array config utilities. After a
1085 * utility reconfigures the drives in the array, it can use this function
1086 * (through an ioctl) to make the driver zap any previous disk structs for
1087 * that controller and get new ones.
1088 *
1089 * Right now I'm using the getgeometry() function to do this, but this
1090 * function should probably be finer grained and allow you to revalidate one
1091 * particualar logical volume (instead of all of them on a particular
1092 * controller).
1093 */
1094 static int revalidate_allvol(ctlr_info_t *host)
1095 {
1096 int ctlr = host->ctlr, i;
1097 unsigned long flags;
1098
1099 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1100 if (host->usage_count > 1) {
1101 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1102 printk(KERN_WARNING "cciss: Device busy for volume"
1103 " revalidation (usage=%d)\n", host->usage_count);
1104 return -EBUSY;
1105 }
1106 host->usage_count++;
1107 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1108
1109 for(i=0; i< NWD; i++) {
1110 struct gendisk *disk = host->gendisk[i];
1111 if (disk->flags & GENHD_FL_UP)
1112 del_gendisk(disk);
1113 }
1114
1115 /*
1116 * Set the partition and block size structures for all volumes
1117 * on this controller to zero. We will reread all of this data
1118 */
1119 memset(host->drv, 0, sizeof(drive_info_struct)
1120 * CISS_MAX_LUN);
1121 /*
1122 * Tell the array controller not to give us any interrupts while
1123 * we check the new geometry. Then turn interrupts back on when
1124 * we're done.
1125 */
1126 host->access.set_intr_mask(host, CCISS_INTR_OFF);
1127 cciss_getgeometry(ctlr);
1128 host->access.set_intr_mask(host, CCISS_INTR_ON);
1129
1130 /* Loop through each real device */
1131 for (i = 0; i < NWD; i++) {
1132 struct gendisk *disk = host->gendisk[i];
1133 drive_info_struct *drv = &(host->drv[i]);
1134 /* we must register the controller even if no disks exist */
1135 /* this is for the online array utilities */
1136 if (!drv->heads && i)
1137 continue;
1138 blk_queue_hardsect_size(drv->queue, drv->block_size);
1139 set_capacity(disk, drv->nr_blocks);
1140 add_disk(disk);
1141 }
1142 host->usage_count--;
1143 return 0;
1144 }
1145
1146 static int deregister_disk(struct gendisk *disk)
1147 {
1148 unsigned long flags;
1149 ctlr_info_t *h = get_host(disk);
1150 drive_info_struct *drv = get_drv(disk);
1151 int ctlr = h->ctlr;
1152
1153 if (!capable(CAP_SYS_RAWIO))
1154 return -EPERM;
1155
1156 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1157 /* make sure logical volume is NOT is use */
1158 if( drv->usage_count > 1) {
1159 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1160 return -EBUSY;
1161 }
1162 drv->usage_count++;
1163 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1164
1165 /* invalidate the devices and deregister the disk */
1166 if (disk->flags & GENHD_FL_UP)
1167 del_gendisk(disk);
1168 /* check to see if it was the last disk */
1169 if (drv == h->drv + h->highest_lun) {
1170 /* if so, find the new hightest lun */
1171 int i, newhighest =-1;
1172 for(i=0; i<h->highest_lun; i++) {
1173 /* if the disk has size > 0, it is available */
1174 if (h->drv[i].nr_blocks)
1175 newhighest = i;
1176 }
1177 h->highest_lun = newhighest;
1178
1179 }
1180 --h->num_luns;
1181 /* zero out the disk size info */
1182 drv->nr_blocks = 0;
1183 drv->block_size = 0;
1184 drv->cylinders = 0;
1185 drv->LunID = 0;
1186 return(0);
1187 }
1188 static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
1189 size_t size,
1190 unsigned int use_unit_num, /* 0: address the controller,
1191 1: address logical volume log_unit,
1192 2: periph device address is scsi3addr */
1193 unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
1194 int cmd_type)
1195 {
1196 ctlr_info_t *h= hba[ctlr];
1197 u64bit buff_dma_handle;
1198 int status = IO_OK;
1199
1200 c->cmd_type = CMD_IOCTL_PEND;
1201 c->Header.ReplyQueue = 0;
1202 if( buff != NULL) {
1203 c->Header.SGList = 1;
1204 c->Header.SGTotal= 1;
1205 } else {
1206 c->Header.SGList = 0;
1207 c->Header.SGTotal= 0;
1208 }
1209 c->Header.Tag.lower = c->busaddr;
1210
1211 c->Request.Type.Type = cmd_type;
1212 if (cmd_type == TYPE_CMD) {
1213 switch(cmd) {
1214 case CISS_INQUIRY:
1215 /* If the logical unit number is 0 then, this is going
1216 to controller so It's a physical command
1217 mode = 0 target = 0. So we have nothing to write.
1218 otherwise, if use_unit_num == 1,
1219 mode = 1(volume set addressing) target = LUNID
1220 otherwise, if use_unit_num == 2,
1221 mode = 0(periph dev addr) target = scsi3addr */
1222 if (use_unit_num == 1) {
1223 c->Header.LUN.LogDev.VolId=
1224 h->drv[log_unit].LunID;
1225 c->Header.LUN.LogDev.Mode = 1;
1226 } else if (use_unit_num == 2) {
1227 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
1228 c->Header.LUN.LogDev.Mode = 0;
1229 }
1230 /* are we trying to read a vital product page */
1231 if(page_code != 0) {
1232 c->Request.CDB[1] = 0x01;
1233 c->Request.CDB[2] = page_code;
1234 }
1235 c->Request.CDBLen = 6;
1236 c->Request.Type.Attribute = ATTR_SIMPLE;
1237 c->Request.Type.Direction = XFER_READ;
1238 c->Request.Timeout = 0;
1239 c->Request.CDB[0] = CISS_INQUIRY;
1240 c->Request.CDB[4] = size & 0xFF;
1241 break;
1242 case CISS_REPORT_LOG:
1243 case CISS_REPORT_PHYS:
1244 /* Talking to controller so It's a physical command
1245 mode = 00 target = 0. Nothing to write.
1246 */
1247 c->Request.CDBLen = 12;
1248 c->Request.Type.Attribute = ATTR_SIMPLE;
1249 c->Request.Type.Direction = XFER_READ;
1250 c->Request.Timeout = 0;
1251 c->Request.CDB[0] = cmd;
1252 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1253 c->Request.CDB[7] = (size >> 16) & 0xFF;
1254 c->Request.CDB[8] = (size >> 8) & 0xFF;
1255 c->Request.CDB[9] = size & 0xFF;
1256 break;
1257
1258 case CCISS_READ_CAPACITY:
1259 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1260 c->Header.LUN.LogDev.Mode = 1;
1261 c->Request.CDBLen = 10;
1262 c->Request.Type.Attribute = ATTR_SIMPLE;
1263 c->Request.Type.Direction = XFER_READ;
1264 c->Request.Timeout = 0;
1265 c->Request.CDB[0] = cmd;
1266 break;
1267 case CCISS_CACHE_FLUSH:
1268 c->Request.CDBLen = 12;
1269 c->Request.Type.Attribute = ATTR_SIMPLE;
1270 c->Request.Type.Direction = XFER_WRITE;
1271 c->Request.Timeout = 0;
1272 c->Request.CDB[0] = BMIC_WRITE;
1273 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1274 break;
1275 default:
1276 printk(KERN_WARNING
1277 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
1278 return(IO_ERROR);
1279 }
1280 } else if (cmd_type == TYPE_MSG) {
1281 switch (cmd) {
1282 case 3: /* No-Op message */
1283 c->Request.CDBLen = 1;
1284 c->Request.Type.Attribute = ATTR_SIMPLE;
1285 c->Request.Type.Direction = XFER_WRITE;
1286 c->Request.Timeout = 0;
1287 c->Request.CDB[0] = cmd;
1288 break;
1289 default:
1290 printk(KERN_WARNING
1291 "cciss%d: unknown message type %d\n",
1292 ctlr, cmd);
1293 return IO_ERROR;
1294 }
1295 } else {
1296 printk(KERN_WARNING
1297 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1298 return IO_ERROR;
1299 }
1300 /* Fill in the scatter gather information */
1301 if (size > 0) {
1302 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1303 buff, size, PCI_DMA_BIDIRECTIONAL);
1304 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1305 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1306 c->SG[0].Len = size;
1307 c->SG[0].Ext = 0; /* we are not chaining */
1308 }
1309 return status;
1310 }
1311 static int sendcmd_withirq(__u8 cmd,
1312 int ctlr,
1313 void *buff,
1314 size_t size,
1315 unsigned int use_unit_num,
1316 unsigned int log_unit,
1317 __u8 page_code,
1318 int cmd_type)
1319 {
1320 ctlr_info_t *h = hba[ctlr];
1321 CommandList_struct *c;
1322 u64bit buff_dma_handle;
1323 unsigned long flags;
1324 int return_status;
1325 DECLARE_COMPLETION(wait);
1326
1327 if ((c = cmd_alloc(h , 0)) == NULL)
1328 return -ENOMEM;
1329 return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1330 log_unit, page_code, NULL, cmd_type);
1331 if (return_status != IO_OK) {
1332 cmd_free(h, c, 0);
1333 return return_status;
1334 }
1335 resend_cmd2:
1336 c->waiting = &wait;
1337
1338 /* Put the request on the tail of the queue and send it */
1339 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1340 addQ(&h->reqQ, c);
1341 h->Qdepth++;
1342 start_io(h);
1343 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1344
1345 wait_for_completion(&wait);
1346
1347 if(c->err_info->CommandStatus != 0)
1348 { /* an error has occurred */
1349 switch(c->err_info->CommandStatus)
1350 {
1351 case CMD_TARGET_STATUS:
1352 printk(KERN_WARNING "cciss: cmd %p has "
1353 " completed with errors\n", c);
1354 if( c->err_info->ScsiStatus)
1355 {
1356 printk(KERN_WARNING "cciss: cmd %p "
1357 "has SCSI Status = %x\n",
1358 c,
1359 c->err_info->ScsiStatus);
1360 }
1361
1362 break;
1363 case CMD_DATA_UNDERRUN:
1364 case CMD_DATA_OVERRUN:
1365 /* expected for inquire and report lun commands */
1366 break;
1367 case CMD_INVALID:
1368 printk(KERN_WARNING "cciss: Cmd %p is "
1369 "reported invalid\n", c);
1370 return_status = IO_ERROR;
1371 break;
1372 case CMD_PROTOCOL_ERR:
1373 printk(KERN_WARNING "cciss: cmd %p has "
1374 "protocol error \n", c);
1375 return_status = IO_ERROR;
1376 break;
1377 case CMD_HARDWARE_ERR:
1378 printk(KERN_WARNING "cciss: cmd %p had "
1379 " hardware error\n", c);
1380 return_status = IO_ERROR;
1381 break;
1382 case CMD_CONNECTION_LOST:
1383 printk(KERN_WARNING "cciss: cmd %p had "
1384 "connection lost\n", c);
1385 return_status = IO_ERROR;
1386 break;
1387 case CMD_ABORTED:
1388 printk(KERN_WARNING "cciss: cmd %p was "
1389 "aborted\n", c);
1390 return_status = IO_ERROR;
1391 break;
1392 case CMD_ABORT_FAILED:
1393 printk(KERN_WARNING "cciss: cmd %p reports "
1394 "abort failed\n", c);
1395 return_status = IO_ERROR;
1396 break;
1397 case CMD_UNSOLICITED_ABORT:
1398 printk(KERN_WARNING
1399 "cciss%d: unsolicited abort %p\n",
1400 ctlr, c);
1401 if (c->retry_count < MAX_CMD_RETRIES) {
1402 printk(KERN_WARNING
1403 "cciss%d: retrying %p\n",
1404 ctlr, c);
1405 c->retry_count++;
1406 /* erase the old error information */
1407 memset(c->err_info, 0,
1408 sizeof(ErrorInfo_struct));
1409 return_status = IO_OK;
1410 INIT_COMPLETION(wait);
1411 goto resend_cmd2;
1412 }
1413 return_status = IO_ERROR;
1414 break;
1415 default:
1416 printk(KERN_WARNING "cciss: cmd %p returned "
1417 "unknown status %x\n", c,
1418 c->err_info->CommandStatus);
1419 return_status = IO_ERROR;
1420 }
1421 }
1422 /* unlock the buffers from DMA */
1423 pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1424 size, PCI_DMA_BIDIRECTIONAL);
1425 cmd_free(h, c, 0);
1426 return(return_status);
1427
1428 }
1429 static void cciss_geometry_inquiry(int ctlr, int logvol,
1430 int withirq, unsigned int total_size,
1431 unsigned int block_size, InquiryData_struct *inq_buff,
1432 drive_info_struct *drv)
1433 {
1434 int return_code;
1435 memset(inq_buff, 0, sizeof(InquiryData_struct));
1436 if (withirq)
1437 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1438 inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1439 else
1440 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1441 sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1442 if (return_code == IO_OK) {
1443 if(inq_buff->data_byte[8] == 0xFF) {
1444 printk(KERN_WARNING
1445 "cciss: reading geometry failed, volume "
1446 "does not support reading geometry\n");
1447 drv->block_size = block_size;
1448 drv->nr_blocks = total_size;
1449 drv->heads = 255;
1450 drv->sectors = 32; // Sectors per track
1451 drv->cylinders = total_size / 255 / 32;
1452 } else {
1453 unsigned int t;
1454
1455 drv->block_size = block_size;
1456 drv->nr_blocks = total_size;
1457 drv->heads = inq_buff->data_byte[6];
1458 drv->sectors = inq_buff->data_byte[7];
1459 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1460 drv->cylinders += inq_buff->data_byte[5];
1461 drv->raid_level = inq_buff->data_byte[8];
1462 t = drv->heads * drv->sectors;
1463 if (t > 1) {
1464 drv->cylinders = total_size/t;
1465 }
1466 }
1467 } else { /* Get geometry failed */
1468 printk(KERN_WARNING "cciss: reading geometry failed\n");
1469 }
1470 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
1471 drv->heads, drv->sectors, drv->cylinders);
1472 }
1473 static void
1474 cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1475 int withirq, unsigned int *total_size, unsigned int *block_size)
1476 {
1477 int return_code;
1478 memset(buf, 0, sizeof(*buf));
1479 if (withirq)
1480 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1481 ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1482 else
1483 return_code = sendcmd(CCISS_READ_CAPACITY,
1484 ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1485 if (return_code == IO_OK) {
1486 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1487 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1488 } else { /* read capacity command failed */
1489 printk(KERN_WARNING "cciss: read capacity failed\n");
1490 *total_size = 0;
1491 *block_size = BLOCK_SIZE;
1492 }
1493 printk(KERN_INFO " blocks= %u block_size= %d\n",
1494 *total_size, *block_size);
1495 return;
1496 }
1497
1498 static int register_new_disk(ctlr_info_t *h)
1499 {
1500 struct gendisk *disk;
1501 int ctlr = h->ctlr;
1502 int i;
1503 int num_luns;
1504 int logvol;
1505 int new_lun_found = 0;
1506 int new_lun_index = 0;
1507 int free_index_found = 0;
1508 int free_index = 0;
1509 ReportLunData_struct *ld_buff = NULL;
1510 ReadCapdata_struct *size_buff = NULL;
1511 InquiryData_struct *inq_buff = NULL;
1512 int return_code;
1513 int listlength = 0;
1514 __u32 lunid = 0;
1515 unsigned int block_size;
1516 unsigned int total_size;
1517
1518 if (!capable(CAP_SYS_RAWIO))
1519 return -EPERM;
1520 /* if we have no space in our disk array left to add anything */
1521 if( h->num_luns >= CISS_MAX_LUN)
1522 return -EINVAL;
1523
1524 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1525 if (ld_buff == NULL)
1526 goto mem_msg;
1527 memset(ld_buff, 0, sizeof(ReportLunData_struct));
1528 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1529 if (size_buff == NULL)
1530 goto mem_msg;
1531 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1532 if (inq_buff == NULL)
1533 goto mem_msg;
1534
1535 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1536 sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);
1537
1538 if( return_code == IO_OK)
1539 {
1540
1541 // printk("LUN Data\n--------------------------\n");
1542
1543 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
1544 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
1545 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
1546 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1547 } else /* reading number of logical volumes failed */
1548 {
1549 printk(KERN_WARNING "cciss: report logical volume"
1550 " command failed\n");
1551 listlength = 0;
1552 goto free_err;
1553 }
1554 num_luns = listlength / 8; // 8 bytes pre entry
1555 if (num_luns > CISS_MAX_LUN)
1556 {
1557 num_luns = CISS_MAX_LUN;
1558 }
1559 #ifdef CCISS_DEBUG
1560 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
1561 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
1562 ld_buff->LUNListLength[3], num_luns);
1563 #endif
1564 for(i=0; i< num_luns; i++)
1565 {
1566 int j;
1567 int lunID_found = 0;
1568
1569 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
1570 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
1571 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
1572 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1573
1574 /* check to see if this is a new lun */
1575 for(j=0; j <= h->highest_lun; j++)
1576 {
1577 #ifdef CCISS_DEBUG
1578 printk("Checking %d %x against %x\n", j,h->drv[j].LunID,
1579 lunid);
1580 #endif /* CCISS_DEBUG */
1581 if (h->drv[j].LunID == lunid)
1582 {
1583 lunID_found = 1;
1584 break;
1585 }
1586
1587 }
1588 if( lunID_found == 1)
1589 continue;
1590 else
1591 { /* It is the new lun we have been looking for */
1592 #ifdef CCISS_DEBUG
1593 printk("new lun found at %d\n", i);
1594 #endif /* CCISS_DEBUG */
1595 new_lun_index = i;
1596 new_lun_found = 1;
1597 break;
1598 }
1599 }
1600 if (!new_lun_found)
1601 {
1602 printk(KERN_WARNING "cciss: New Logical Volume not found\n");
1603 goto free_err;
1604 }
1605 /* Now find the free index */
1606 for(i=0; i <CISS_MAX_LUN; i++)
1607 {
1608 #ifdef CCISS_DEBUG
1609 printk("Checking Index %d\n", i);
1610 #endif /* CCISS_DEBUG */
1611 if(h->drv[i].LunID == 0)
1612 {
1613 #ifdef CCISS_DEBUG
1614 printk("free index found at %d\n", i);
1615 #endif /* CCISS_DEBUG */
1616 free_index_found = 1;
1617 free_index = i;
1618 break;
1619 }
1620 }
1621 if (!free_index_found)
1622 {
1623 printk(KERN_WARNING "cciss: unable to find free slot for disk\n");
1624 goto free_err;
1625 }
1626
1627 logvol = free_index;
1628 h->drv[logvol].LunID = lunid;
1629 /* there could be gaps in lun numbers, track hightest */
1630 if(h->highest_lun < lunid)
1631 h->highest_lun = logvol;
1632 cciss_read_capacity(ctlr, logvol, size_buff, 1,
1633 &total_size, &block_size);
1634 cciss_geometry_inquiry(ctlr, logvol, 1, total_size, block_size,
1635 inq_buff, &h->drv[logvol]);
1636 h->drv[logvol].usage_count = 0;
1637 ++h->num_luns;
1638 /* setup partitions per disk */
1639 disk = h->gendisk[logvol];
1640 set_capacity(disk, h->drv[logvol].nr_blocks);
1641 /* if it's the controller it's already added */
1642 if(logvol)
1643 add_disk(disk);
1644 freeret:
1645 kfree(ld_buff);
1646 kfree(size_buff);
1647 kfree(inq_buff);
1648 return (logvol);
1649 mem_msg:
1650 printk(KERN_ERR "cciss: out of memory\n");
1651 free_err:
1652 logvol = -1;
1653 goto freeret;
1654 }
1655
1656 static int cciss_revalidate(struct gendisk *disk)
1657 {
1658 ctlr_info_t *h = get_host(disk);
1659 drive_info_struct *drv = get_drv(disk);
1660 int logvol;
1661 int FOUND=0;
1662 unsigned int block_size;
1663 unsigned int total_size;
1664 ReadCapdata_struct *size_buff = NULL;
1665 InquiryData_struct *inq_buff = NULL;
1666
1667 for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1668 {
1669 if(h->drv[logvol].LunID == drv->LunID) {
1670 FOUND=1;
1671 break;
1672 }
1673 }
1674
1675 if (!FOUND) return 1;
1676
1677 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1678 if (size_buff == NULL)
1679 {
1680 printk(KERN_WARNING "cciss: out of memory\n");
1681 return 1;
1682 }
1683 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1684 if (inq_buff == NULL)
1685 {
1686 printk(KERN_WARNING "cciss: out of memory\n");
1687 kfree(size_buff);
1688 return 1;
1689 }
1690
1691 cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1692 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1693
1694 blk_queue_hardsect_size(drv->queue, drv->block_size);
1695 set_capacity(disk, drv->nr_blocks);
1696
1697 kfree(size_buff);
1698 kfree(inq_buff);
1699 return 0;
1700 }
1701
1702 /*
1703 * Wait polling for a command to complete.
1704 * The memory mapped FIFO is polled for the completion.
1705 * Used only at init time, interrupts from the HBA are disabled.
1706 */
1707 static unsigned long pollcomplete(int ctlr)
1708 {
1709 unsigned long done;
1710 int i;
1711
1712 /* Wait (up to 20 seconds) for a command to complete */
1713
1714 for (i = 20 * HZ; i > 0; i--) {
1715 done = hba[ctlr]->access.command_completed(hba[ctlr]);
1716 if (done == FIFO_EMPTY)
1717 schedule_timeout_uninterruptible(1);
1718 else
1719 return (done);
1720 }
1721 /* Invalid address to tell caller we ran out of time */
1722 return 1;
1723 }
1724 /*
1725 * Send a command to the controller, and wait for it to complete.
1726 * Only used at init time.
1727 */
1728 static int sendcmd(
1729 __u8 cmd,
1730 int ctlr,
1731 void *buff,
1732 size_t size,
1733 unsigned int use_unit_num, /* 0: address the controller,
1734 1: address logical volume log_unit,
1735 2: periph device address is scsi3addr */
1736 unsigned int log_unit,
1737 __u8 page_code,
1738 unsigned char *scsi3addr,
1739 int cmd_type)
1740 {
1741 CommandList_struct *c;
1742 int i;
1743 unsigned long complete;
1744 ctlr_info_t *info_p= hba[ctlr];
1745 u64bit buff_dma_handle;
1746 int status;
1747
1748 if ((c = cmd_alloc(info_p, 1)) == NULL) {
1749 printk(KERN_WARNING "cciss: unable to get memory");
1750 return(IO_ERROR);
1751 }
1752 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1753 log_unit, page_code, scsi3addr, cmd_type);
1754 if (status != IO_OK) {
1755 cmd_free(info_p, c, 1);
1756 return status;
1757 }
1758 resend_cmd1:
1759 /*
1760 * Disable interrupt
1761 */
1762 #ifdef CCISS_DEBUG
1763 printk(KERN_DEBUG "cciss: turning intr off\n");
1764 #endif /* CCISS_DEBUG */
1765 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1766
1767 /* Make sure there is room in the command FIFO */
1768 /* Actually it should be completely empty at this time. */
1769 for (i = 200000; i > 0; i--)
1770 {
1771 /* if fifo isn't full go */
1772 if (!(info_p->access.fifo_full(info_p)))
1773 {
1774
1775 break;
1776 }
1777 udelay(10);
1778 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
1779 " waiting!\n", ctlr);
1780 }
1781 /*
1782 * Send the cmd
1783 */
1784 info_p->access.submit_command(info_p, c);
1785 complete = pollcomplete(ctlr);
1786
1787 #ifdef CCISS_DEBUG
1788 printk(KERN_DEBUG "cciss: command completed\n");
1789 #endif /* CCISS_DEBUG */
1790
1791 if (complete != 1) {
1792 if ( (complete & CISS_ERROR_BIT)
1793 && (complete & ~CISS_ERROR_BIT) == c->busaddr)
1794 {
1795 /* if data overrun or underun on Report command
1796 ignore it
1797 */
1798 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
1799 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
1800 (c->Request.CDB[0] == CISS_INQUIRY)) &&
1801 ((c->err_info->CommandStatus ==
1802 CMD_DATA_OVERRUN) ||
1803 (c->err_info->CommandStatus ==
1804 CMD_DATA_UNDERRUN)
1805 ))
1806 {
1807 complete = c->busaddr;
1808 } else {
1809 if (c->err_info->CommandStatus ==
1810 CMD_UNSOLICITED_ABORT) {
1811 printk(KERN_WARNING "cciss%d: "
1812 "unsolicited abort %p\n",
1813 ctlr, c);
1814 if (c->retry_count < MAX_CMD_RETRIES) {
1815 printk(KERN_WARNING
1816 "cciss%d: retrying %p\n",
1817 ctlr, c);
1818 c->retry_count++;
1819 /* erase the old error */
1820 /* information */
1821 memset(c->err_info, 0,
1822 sizeof(ErrorInfo_struct));
1823 goto resend_cmd1;
1824 } else {
1825 printk(KERN_WARNING
1826 "cciss%d: retried %p too "
1827 "many times\n", ctlr, c);
1828 status = IO_ERROR;
1829 goto cleanup1;
1830 }
1831 }
1832 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1833 " Error %x \n", ctlr,
1834 c->err_info->CommandStatus);
1835 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1836 " offensive info\n"
1837 " size %x\n num %x value %x\n", ctlr,
1838 c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
1839 c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
1840 c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
1841 status = IO_ERROR;
1842 goto cleanup1;
1843 }
1844 }
1845 if (complete != c->busaddr) {
1846 printk( KERN_WARNING "cciss cciss%d: SendCmd "
1847 "Invalid command list address returned! (%lx)\n",
1848 ctlr, complete);
1849 status = IO_ERROR;
1850 goto cleanup1;
1851 }
1852 } else {
1853 printk( KERN_WARNING
1854 "cciss cciss%d: SendCmd Timeout out, "
1855 "No command list address returned!\n",
1856 ctlr);
1857 status = IO_ERROR;
1858 }
1859
1860 cleanup1:
1861 /* unlock the data buffer from DMA */
1862 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
1863 size, PCI_DMA_BIDIRECTIONAL);
1864 cmd_free(info_p, c, 1);
1865 return (status);
1866 }
1867 /*
1868 * Map (physical) PCI mem into (virtual) kernel space
1869 */
1870 static void __iomem *remap_pci_mem(ulong base, ulong size)
1871 {
1872 ulong page_base = ((ulong) base) & PAGE_MASK;
1873 ulong page_offs = ((ulong) base) - page_base;
1874 void __iomem *page_remapped = ioremap(page_base, page_offs+size);
1875
1876 return page_remapped ? (page_remapped + page_offs) : NULL;
1877 }
1878
1879 /*
1880 * Takes jobs of the Q and sends them to the hardware, then puts it on
1881 * the Q to wait for completion.
1882 */
1883 static void start_io( ctlr_info_t *h)
1884 {
1885 CommandList_struct *c;
1886
1887 while(( c = h->reqQ) != NULL )
1888 {
1889 /* can't do anything if fifo is full */
1890 if ((h->access.fifo_full(h))) {
1891 printk(KERN_WARNING "cciss: fifo full\n");
1892 break;
1893 }
1894
1895 /* Get the frist entry from the Request Q */
1896 removeQ(&(h->reqQ), c);
1897 h->Qdepth--;
1898
1899 /* Tell the controller execute command */
1900 h->access.submit_command(h, c);
1901
1902 /* Put job onto the completed Q */
1903 addQ (&(h->cmpQ), c);
1904 }
1905 }
1906
1907 static inline void complete_buffers(struct bio *bio, int status)
1908 {
1909 while (bio) {
1910 struct bio *xbh = bio->bi_next;
1911 int nr_sectors = bio_sectors(bio);
1912
1913 bio->bi_next = NULL;
1914 blk_finished_io(len);
1915 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
1916 bio = xbh;
1917 }
1918
1919 }
1920 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
1921 /* Zeros out the error record and then resends the command back */
1922 /* to the controller */
1923 static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
1924 {
1925 /* erase the old error information */
1926 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
1927
1928 /* add it to software queue and then send it to the controller */
1929 addQ(&(h->reqQ),c);
1930 h->Qdepth++;
1931 if(h->Qdepth > h->maxQsinceinit)
1932 h->maxQsinceinit = h->Qdepth;
1933
1934 start_io(h);
1935 }
1936 /* checks the status of the job and calls complete buffers to mark all
1937 * buffers for the completed job.
1938 */
1939 static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
1940 int timeout)
1941 {
1942 int status = 1;
1943 int i;
1944 int retry_cmd = 0;
1945 u64bit temp64;
1946
1947 if (timeout)
1948 status = 0;
1949
1950 if(cmd->err_info->CommandStatus != 0)
1951 { /* an error has occurred */
1952 switch(cmd->err_info->CommandStatus)
1953 {
1954 unsigned char sense_key;
1955 case CMD_TARGET_STATUS:
1956 status = 0;
1957
1958 if( cmd->err_info->ScsiStatus == 0x02)
1959 {
1960 printk(KERN_WARNING "cciss: cmd %p "
1961 "has CHECK CONDITION "
1962 " byte 2 = 0x%x\n", cmd,
1963 cmd->err_info->SenseInfo[2]
1964 );
1965 /* check the sense key */
1966 sense_key = 0xf &
1967 cmd->err_info->SenseInfo[2];
1968 /* no status or recovered error */
1969 if((sense_key == 0x0) ||
1970 (sense_key == 0x1))
1971 {
1972 status = 1;
1973 }
1974 } else
1975 {
1976 printk(KERN_WARNING "cciss: cmd %p "
1977 "has SCSI Status 0x%x\n",
1978 cmd, cmd->err_info->ScsiStatus);
1979 }
1980 break;
1981 case CMD_DATA_UNDERRUN:
1982 printk(KERN_WARNING "cciss: cmd %p has"
1983 " completed with data underrun "
1984 "reported\n", cmd);
1985 break;
1986 case CMD_DATA_OVERRUN:
1987 printk(KERN_WARNING "cciss: cmd %p has"
1988 " completed with data overrun "
1989 "reported\n", cmd);
1990 break;
1991 case CMD_INVALID:
1992 printk(KERN_WARNING "cciss: cmd %p is "
1993 "reported invalid\n", cmd);
1994 status = 0;
1995 break;
1996 case CMD_PROTOCOL_ERR:
1997 printk(KERN_WARNING "cciss: cmd %p has "
1998 "protocol error \n", cmd);
1999 status = 0;
2000 break;
2001 case CMD_HARDWARE_ERR:
2002 printk(KERN_WARNING "cciss: cmd %p had "
2003 " hardware error\n", cmd);
2004 status = 0;
2005 break;
2006 case CMD_CONNECTION_LOST:
2007 printk(KERN_WARNING "cciss: cmd %p had "
2008 "connection lost\n", cmd);
2009 status=0;
2010 break;
2011 case CMD_ABORTED:
2012 printk(KERN_WARNING "cciss: cmd %p was "
2013 "aborted\n", cmd);
2014 status=0;
2015 break;
2016 case CMD_ABORT_FAILED:
2017 printk(KERN_WARNING "cciss: cmd %p reports "
2018 "abort failed\n", cmd);
2019 status=0;
2020 break;
2021 case CMD_UNSOLICITED_ABORT:
2022 printk(KERN_WARNING "cciss%d: unsolicited "
2023 "abort %p\n", h->ctlr, cmd);
2024 if (cmd->retry_count < MAX_CMD_RETRIES) {
2025 retry_cmd=1;
2026 printk(KERN_WARNING
2027 "cciss%d: retrying %p\n",
2028 h->ctlr, cmd);
2029 cmd->retry_count++;
2030 } else
2031 printk(KERN_WARNING
2032 "cciss%d: %p retried too "
2033 "many times\n", h->ctlr, cmd);
2034 status=0;
2035 break;
2036 case CMD_TIMEOUT:
2037 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2038 cmd);
2039 status=0;
2040 break;
2041 default:
2042 printk(KERN_WARNING "cciss: cmd %p returned "
2043 "unknown status %x\n", cmd,
2044 cmd->err_info->CommandStatus);
2045 status=0;
2046 }
2047 }
2048 /* We need to return this command */
2049 if(retry_cmd) {
2050 resend_cciss_cmd(h,cmd);
2051 return;
2052 }
2053 /* command did not need to be retried */
2054 /* unmap the DMA mapping for all the scatter gather elements */
2055 for(i=0; i<cmd->Header.SGList; i++) {
2056 temp64.val32.lower = cmd->SG[i].Addr.lower;
2057 temp64.val32.upper = cmd->SG[i].Addr.upper;
2058 pci_unmap_page(hba[cmd->ctlr]->pdev,
2059 temp64.val, cmd->SG[i].Len,
2060 (cmd->Request.Type.Direction == XFER_READ) ?
2061 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2062 }
2063 complete_buffers(cmd->rq->bio, status);
2064
2065 #ifdef CCISS_DEBUG
2066 printk("Done with %p\n", cmd->rq);
2067 #endif /* CCISS_DEBUG */
2068
2069 end_that_request_last(cmd->rq);
2070 cmd_free(h,cmd,1);
2071 }
2072
2073 /*
2074 * Get a request and submit it to the controller.
2075 */
2076 static void do_cciss_request(request_queue_t *q)
2077 {
2078 ctlr_info_t *h= q->queuedata;
2079 CommandList_struct *c;
2080 int start_blk, seg;
2081 struct request *creq;
2082 u64bit temp64;
2083 struct scatterlist tmp_sg[MAXSGENTRIES];
2084 drive_info_struct *drv;
2085 int i, dir;
2086
2087 /* We call start_io here in case there is a command waiting on the
2088 * queue that has not been sent.
2089 */
2090 if (blk_queue_plugged(q))
2091 goto startio;
2092
2093 queue:
2094 creq = elv_next_request(q);
2095 if (!creq)
2096 goto startio;
2097
2098 if (creq->nr_phys_segments > MAXSGENTRIES)
2099 BUG();
2100
2101 if (( c = cmd_alloc(h, 1)) == NULL)
2102 goto full;
2103
2104 blkdev_dequeue_request(creq);
2105
2106 spin_unlock_irq(q->queue_lock);
2107
2108 c->cmd_type = CMD_RWREQ;
2109 c->rq = creq;
2110
2111 /* fill in the request */
2112 drv = creq->rq_disk->private_data;
2113 c->Header.ReplyQueue = 0; // unused in simple mode
2114 c->Header.Tag.lower = c->busaddr; // use the physical address the cmd block for tag
2115 c->Header.LUN.LogDev.VolId= drv->LunID;
2116 c->Header.LUN.LogDev.Mode = 1;
2117 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2118 c->Request.Type.Type = TYPE_CMD; // It is a command.
2119 c->Request.Type.Attribute = ATTR_SIMPLE;
2120 c->Request.Type.Direction =
2121 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
2122 c->Request.Timeout = 0; // Don't time out
2123 c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2124 start_blk = creq->sector;
2125 #ifdef CCISS_DEBUG
2126 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2127 (int) creq->nr_sectors);
2128 #endif /* CCISS_DEBUG */
2129
2130 seg = blk_rq_map_sg(q, creq, tmp_sg);
2131
2132 /* get the DMA records for the setup */
2133 if (c->Request.Type.Direction == XFER_READ)
2134 dir = PCI_DMA_FROMDEVICE;
2135 else
2136 dir = PCI_DMA_TODEVICE;
2137
2138 for (i=0; i<seg; i++)
2139 {
2140 c->SG[i].Len = tmp_sg[i].length;
2141 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2142 tmp_sg[i].offset, tmp_sg[i].length,
2143 dir);
2144 c->SG[i].Addr.lower = temp64.val32.lower;
2145 c->SG[i].Addr.upper = temp64.val32.upper;
2146 c->SG[i].Ext = 0; // we are not chaining
2147 }
2148 /* track how many SG entries we are using */
2149 if( seg > h->maxSG)
2150 h->maxSG = seg;
2151
2152 #ifdef CCISS_DEBUG
2153 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2154 #endif /* CCISS_DEBUG */
2155
2156 c->Header.SGList = c->Header.SGTotal = seg;
2157 c->Request.CDB[1]= 0;
2158 c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB
2159 c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2160 c->Request.CDB[4]= (start_blk >> 8) & 0xff;
2161 c->Request.CDB[5]= start_blk & 0xff;
2162 c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2163 c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff;
2164 c->Request.CDB[8]= creq->nr_sectors & 0xff;
2165 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2166
2167 spin_lock_irq(q->queue_lock);
2168
2169 addQ(&(h->reqQ),c);
2170 h->Qdepth++;
2171 if(h->Qdepth > h->maxQsinceinit)
2172 h->maxQsinceinit = h->Qdepth;
2173
2174 goto queue;
2175 full:
2176 blk_stop_queue(q);
2177 startio:
2178 /* We will already have the driver lock here so not need
2179 * to lock it.
2180 */
2181 start_io(h);
2182 }
2183
2184 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2185 {
2186 ctlr_info_t *h = dev_id;
2187 CommandList_struct *c;
2188 unsigned long flags;
2189 __u32 a, a1;
2190 int j;
2191 int start_queue = h->next_to_run;
2192
2193 /* Is this interrupt for us? */
2194 if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2195 return IRQ_NONE;
2196
2197 /*
2198 * If there are completed commands in the completion queue,
2199 * we had better do something about it.
2200 */
2201 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2202 while( h->access.intr_pending(h))
2203 {
2204 while((a = h->access.command_completed(h)) != FIFO_EMPTY)
2205 {
2206 a1 = a;
2207 a &= ~3;
2208 if ((c = h->cmpQ) == NULL)
2209 {
2210 printk(KERN_WARNING "cciss: Completion of %08lx ignored\n", (unsigned long)a1);
2211 continue;
2212 }
2213 while(c->busaddr != a) {
2214 c = c->next;
2215 if (c == h->cmpQ)
2216 break;
2217 }
2218 /*
2219 * If we've found the command, take it off the
2220 * completion Q and free it
2221 */
2222 if (c->busaddr == a) {
2223 removeQ(&h->cmpQ, c);
2224 if (c->cmd_type == CMD_RWREQ) {
2225 complete_command(h, c, 0);
2226 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2227 complete(c->waiting);
2228 }
2229 # ifdef CONFIG_CISS_SCSI_TAPE
2230 else if (c->cmd_type == CMD_SCSI)
2231 complete_scsi_command(c, 0, a1);
2232 # endif
2233 continue;
2234 }
2235 }
2236 }
2237
2238 /* check to see if we have maxed out the number of commands that can
2239 * be placed on the queue. If so then exit. We do this check here
2240 * in case the interrupt we serviced was from an ioctl and did not
2241 * free any new commands.
2242 */
2243 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2244 goto cleanup;
2245
2246 /* We have room on the queue for more commands. Now we need to queue
2247 * them up. We will also keep track of the next queue to run so
2248 * that every queue gets a chance to be started first.
2249 */
2250 for (j=0; j < h->highest_lun + 1; j++){
2251 int curr_queue = (start_queue + j) % (h->highest_lun + 1);
2252 /* make sure the disk has been added and the drive is real
2253 * because this can be called from the middle of init_one.
2254 */
2255 if(!(h->drv[curr_queue].queue) ||
2256 !(h->drv[curr_queue].heads))
2257 continue;
2258 blk_start_queue(h->gendisk[curr_queue]->queue);
2259
2260 /* check to see if we have maxed out the number of commands
2261 * that can be placed on the queue.
2262 */
2263 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2264 {
2265 if (curr_queue == start_queue){
2266 h->next_to_run = (start_queue + 1) % (h->highest_lun + 1);
2267 goto cleanup;
2268 } else {
2269 h->next_to_run = curr_queue;
2270 goto cleanup;
2271 }
2272 } else {
2273 curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
2274 }
2275 }
2276
2277 cleanup:
2278 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2279 return IRQ_HANDLED;
2280 }
2281 /*
2282 * We cannot read the structure directly, for portablity we must use
2283 * the io functions.
2284 * This is for debug only.
2285 */
2286 #ifdef CCISS_DEBUG
2287 static void print_cfg_table( CfgTable_struct *tb)
2288 {
2289 int i;
2290 char temp_name[17];
2291
2292 printk("Controller Configuration information\n");
2293 printk("------------------------------------\n");
2294 for(i=0;i<4;i++)
2295 temp_name[i] = readb(&(tb->Signature[i]));
2296 temp_name[4]='\0';
2297 printk(" Signature = %s\n", temp_name);
2298 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2299 printk(" Transport methods supported = 0x%x\n",
2300 readl(&(tb-> TransportSupport)));
2301 printk(" Transport methods active = 0x%x\n",
2302 readl(&(tb->TransportActive)));
2303 printk(" Requested transport Method = 0x%x\n",
2304 readl(&(tb->HostWrite.TransportRequest)));
2305 printk(" Coalese Interrupt Delay = 0x%x\n",
2306 readl(&(tb->HostWrite.CoalIntDelay)));
2307 printk(" Coalese Interrupt Count = 0x%x\n",
2308 readl(&(tb->HostWrite.CoalIntCount)));
2309 printk(" Max outstanding commands = 0x%d\n",
2310 readl(&(tb->CmdsOutMax)));
2311 printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2312 for(i=0;i<16;i++)
2313 temp_name[i] = readb(&(tb->ServerName[i]));
2314 temp_name[16] = '\0';
2315 printk(" Server Name = %s\n", temp_name);
2316 printk(" Heartbeat Counter = 0x%x\n\n\n",
2317 readl(&(tb->HeartBeat)));
2318 }
2319 #endif /* CCISS_DEBUG */
2320
2321 static void release_io_mem(ctlr_info_t *c)
2322 {
2323 /* if IO mem was not protected do nothing */
2324 if( c->io_mem_addr == 0)
2325 return;
2326 release_region(c->io_mem_addr, c->io_mem_length);
2327 c->io_mem_addr = 0;
2328 c->io_mem_length = 0;
2329 }
2330
2331 static int find_PCI_BAR_index(struct pci_dev *pdev,
2332 unsigned long pci_bar_addr)
2333 {
2334 int i, offset, mem_type, bar_type;
2335 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2336 return 0;
2337 offset = 0;
2338 for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2339 bar_type = pci_resource_flags(pdev, i) &
2340 PCI_BASE_ADDRESS_SPACE;
2341 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2342 offset += 4;
2343 else {
2344 mem_type = pci_resource_flags(pdev, i) &
2345 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2346 switch (mem_type) {
2347 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2348 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2349 offset += 4; /* 32 bit */
2350 break;
2351 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2352 offset += 8;
2353 break;
2354 default: /* reserved in PCI 2.2 */
2355 printk(KERN_WARNING "Base address is invalid\n");
2356 return -1;
2357 break;
2358 }
2359 }
2360 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2361 return i+1;
2362 }
2363 return -1;
2364 }
2365
2366 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2367 {
2368 ushort subsystem_vendor_id, subsystem_device_id, command;
2369 __u32 board_id, scratchpad = 0;
2370 __u64 cfg_offset;
2371 __u32 cfg_base_addr;
2372 __u64 cfg_base_addr_index;
2373 int i;
2374
2375 /* check to see if controller has been disabled */
2376 /* BEFORE trying to enable it */
2377 (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2378 if(!(command & 0x02))
2379 {
2380 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2381 return(-1);
2382 }
2383
2384 if (pci_enable_device(pdev))
2385 {
2386 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2387 return( -1);
2388 }
2389
2390 subsystem_vendor_id = pdev->subsystem_vendor;
2391 subsystem_device_id = pdev->subsystem_device;
2392 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2393 subsystem_vendor_id);
2394
2395 /* search for our IO range so we can protect it */
2396 for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2397 {
2398 /* is this an IO range */
2399 if( pci_resource_flags(pdev, i) & 0x01 ) {
2400 c->io_mem_addr = pci_resource_start(pdev, i);
2401 c->io_mem_length = pci_resource_end(pdev, i) -
2402 pci_resource_start(pdev, i) +1;
2403 #ifdef CCISS_DEBUG
2404 printk("IO value found base_addr[%d] %lx %lx\n", i,
2405 c->io_mem_addr, c->io_mem_length);
2406 #endif /* CCISS_DEBUG */
2407 /* register the IO range */
2408 if(!request_region( c->io_mem_addr,
2409 c->io_mem_length, "cciss"))
2410 {
2411 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2412 c->io_mem_addr, c->io_mem_length);
2413 c->io_mem_addr= 0;
2414 c->io_mem_length = 0;
2415 }
2416 break;
2417 }
2418 }
2419
2420 #ifdef CCISS_DEBUG
2421 printk("command = %x\n", command);
2422 printk("irq = %x\n", pdev->irq);
2423 printk("board_id = %x\n", board_id);
2424 #endif /* CCISS_DEBUG */
2425
2426 c->intr = pdev->irq;
2427
2428 /*
2429 * Memory base addr is first addr , the second points to the config
2430 * table
2431 */
2432
2433 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2434 #ifdef CCISS_DEBUG
2435 printk("address 0 = %x\n", c->paddr);
2436 #endif /* CCISS_DEBUG */
2437 c->vaddr = remap_pci_mem(c->paddr, 200);
2438
2439 /* Wait for the board to become ready. (PCI hotplug needs this.)
2440 * We poll for up to 120 secs, once per 100ms. */
2441 for (i=0; i < 1200; i++) {
2442 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2443 if (scratchpad == CCISS_FIRMWARE_READY)
2444 break;
2445 set_current_state(TASK_INTERRUPTIBLE);
2446 schedule_timeout(HZ / 10); /* wait 100ms */
2447 }
2448 if (scratchpad != CCISS_FIRMWARE_READY) {
2449 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2450 return -1;
2451 }
2452
2453 /* get the address index number */
2454 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2455 cfg_base_addr &= (__u32) 0x0000ffff;
2456 #ifdef CCISS_DEBUG
2457 printk("cfg base address = %x\n", cfg_base_addr);
2458 #endif /* CCISS_DEBUG */
2459 cfg_base_addr_index =
2460 find_PCI_BAR_index(pdev, cfg_base_addr);
2461 #ifdef CCISS_DEBUG
2462 printk("cfg base address index = %x\n", cfg_base_addr_index);
2463 #endif /* CCISS_DEBUG */
2464 if (cfg_base_addr_index == -1) {
2465 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2466 release_io_mem(c);
2467 return -1;
2468 }
2469
2470 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2471 #ifdef CCISS_DEBUG
2472 printk("cfg offset = %x\n", cfg_offset);
2473 #endif /* CCISS_DEBUG */
2474 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
2475 cfg_base_addr_index) + cfg_offset,
2476 sizeof(CfgTable_struct));
2477 c->board_id = board_id;
2478
2479 #ifdef CCISS_DEBUG
2480 print_cfg_table(c->cfgtable);
2481 #endif /* CCISS_DEBUG */
2482
2483 for(i=0; i<NR_PRODUCTS; i++) {
2484 if (board_id == products[i].board_id) {
2485 c->product_name = products[i].product_name;
2486 c->access = *(products[i].access);
2487 break;
2488 }
2489 }
2490 if (i == NR_PRODUCTS) {
2491 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2492 " to access the Smart Array controller %08lx\n",
2493 (unsigned long)board_id);
2494 return -1;
2495 }
2496 if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
2497 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2498 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2499 (readb(&c->cfgtable->Signature[3]) != 'S') )
2500 {
2501 printk("Does not appear to be a valid CISS config table\n");
2502 return -1;
2503 }
2504
2505 #ifdef CONFIG_X86
2506 {
2507 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2508 __u32 prefetch;
2509 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2510 prefetch |= 0x100;
2511 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2512 }
2513 #endif
2514
2515 #ifdef CCISS_DEBUG
2516 printk("Trying to put board into Simple mode\n");
2517 #endif /* CCISS_DEBUG */
2518 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2519 /* Update the field, and then ring the doorbell */
2520 writel( CFGTBL_Trans_Simple,
2521 &(c->cfgtable->HostWrite.TransportRequest));
2522 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2523
2524 /* under certain very rare conditions, this can take awhile.
2525 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2526 * as we enter this code.) */
2527 for(i=0;i<MAX_CONFIG_WAIT;i++) {
2528 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2529 break;
2530 /* delay and try again */
2531 set_current_state(TASK_INTERRUPTIBLE);
2532 schedule_timeout(10);
2533 }
2534
2535 #ifdef CCISS_DEBUG
2536 printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2537 #endif /* CCISS_DEBUG */
2538 #ifdef CCISS_DEBUG
2539 print_cfg_table(c->cfgtable);
2540 #endif /* CCISS_DEBUG */
2541
2542 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2543 {
2544 printk(KERN_WARNING "cciss: unable to get board into"
2545 " simple mode\n");
2546 return -1;
2547 }
2548 return 0;
2549
2550 }
2551
2552 /*
2553 * Gets information about the local volumes attached to the controller.
2554 */
2555 static void cciss_getgeometry(int cntl_num)
2556 {
2557 ReportLunData_struct *ld_buff;
2558 ReadCapdata_struct *size_buff;
2559 InquiryData_struct *inq_buff;
2560 int return_code;
2561 int i;
2562 int listlength = 0;
2563 __u32 lunid = 0;
2564 int block_size;
2565 int total_size;
2566
2567 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2568 if (ld_buff == NULL)
2569 {
2570 printk(KERN_ERR "cciss: out of memory\n");
2571 return;
2572 }
2573 memset(ld_buff, 0, sizeof(ReportLunData_struct));
2574 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2575 if (size_buff == NULL)
2576 {
2577 printk(KERN_ERR "cciss: out of memory\n");
2578 kfree(ld_buff);
2579 return;
2580 }
2581 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2582 if (inq_buff == NULL)
2583 {
2584 printk(KERN_ERR "cciss: out of memory\n");
2585 kfree(ld_buff);
2586 kfree(size_buff);
2587 return;
2588 }
2589 /* Get the firmware version */
2590 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2591 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2592 if (return_code == IO_OK)
2593 {
2594 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2595 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2596 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2597 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2598 } else /* send command failed */
2599 {
2600 printk(KERN_WARNING "cciss: unable to determine firmware"
2601 " version of controller\n");
2602 }
2603 /* Get the number of logical volumes */
2604 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2605 sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2606
2607 if( return_code == IO_OK)
2608 {
2609 #ifdef CCISS_DEBUG
2610 printk("LUN Data\n--------------------------\n");
2611 #endif /* CCISS_DEBUG */
2612
2613 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2614 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2615 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
2616 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2617 } else /* reading number of logical volumes failed */
2618 {
2619 printk(KERN_WARNING "cciss: report logical volume"
2620 " command failed\n");
2621 listlength = 0;
2622 }
2623 hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2624 if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2625 {
2626 printk(KERN_ERR "ciss: only %d number of logical volumes supported\n",
2627 CISS_MAX_LUN);
2628 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2629 }
2630 #ifdef CCISS_DEBUG
2631 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2632 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2633 ld_buff->LUNListLength[3], hba[cntl_num]->num_luns);
2634 #endif /* CCISS_DEBUG */
2635
2636 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
2637 for(i=0; i< hba[cntl_num]->num_luns; i++)
2638 {
2639
2640 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
2641 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
2642 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
2643 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2644
2645 hba[cntl_num]->drv[i].LunID = lunid;
2646
2647
2648 #ifdef CCISS_DEBUG
2649 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
2650 ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2],
2651 ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID);
2652 #endif /* CCISS_DEBUG */
2653 cciss_read_capacity(cntl_num, i, size_buff, 0,
2654 &total_size, &block_size);
2655 cciss_geometry_inquiry(cntl_num, i, 0, total_size, block_size,
2656 inq_buff, &hba[cntl_num]->drv[i]);
2657 }
2658 kfree(ld_buff);
2659 kfree(size_buff);
2660 kfree(inq_buff);
2661 }
2662
2663 /* Function to find the first free pointer into our hba[] array */
2664 /* Returns -1 if no free entries are left. */
2665 static int alloc_cciss_hba(void)
2666 {
2667 struct gendisk *disk[NWD];
2668 int i, n;
2669 for (n = 0; n < NWD; n++) {
2670 disk[n] = alloc_disk(1 << NWD_SHIFT);
2671 if (!disk[n])
2672 goto out;
2673 }
2674
2675 for(i=0; i< MAX_CTLR; i++) {
2676 if (!hba[i]) {
2677 ctlr_info_t *p;
2678 p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
2679 if (!p)
2680 goto Enomem;
2681 memset(p, 0, sizeof(ctlr_info_t));
2682 for (n = 0; n < NWD; n++)
2683 p->gendisk[n] = disk[n];
2684 hba[i] = p;
2685 return i;
2686 }
2687 }
2688 printk(KERN_WARNING "cciss: This driver supports a maximum"
2689 " of %d controllers.\n", MAX_CTLR);
2690 goto out;
2691 Enomem:
2692 printk(KERN_ERR "cciss: out of memory.\n");
2693 out:
2694 while (n--)
2695 put_disk(disk[n]);
2696 return -1;
2697 }
2698
2699 static void free_hba(int i)
2700 {
2701 ctlr_info_t *p = hba[i];
2702 int n;
2703
2704 hba[i] = NULL;
2705 for (n = 0; n < NWD; n++)
2706 put_disk(p->gendisk[n]);
2707 kfree(p);
2708 }
2709
2710 /*
2711 * This is it. Find all the controllers and register them. I really hate
2712 * stealing all these major device numbers.
2713 * returns the number of block devices registered.
2714 */
2715 static int __devinit cciss_init_one(struct pci_dev *pdev,
2716 const struct pci_device_id *ent)
2717 {
2718 request_queue_t *q;
2719 int i;
2720 int j;
2721 int rc;
2722
2723 printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
2724 " bus %d dev %d func %d\n",
2725 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
2726 PCI_FUNC(pdev->devfn));
2727 i = alloc_cciss_hba();
2728 if(i < 0)
2729 return (-1);
2730 if (cciss_pci_init(hba[i], pdev) != 0)
2731 goto clean1;
2732
2733 sprintf(hba[i]->devname, "cciss%d", i);
2734 hba[i]->ctlr = i;
2735 hba[i]->pdev = pdev;
2736
2737 /* configure PCI DMA stuff */
2738 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
2739 printk("cciss: using DAC cycles\n");
2740 else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2741 printk("cciss: not using DAC cycles\n");
2742 else {
2743 printk("cciss: no suitable DMA available\n");
2744 goto clean1;
2745 }
2746
2747 /*
2748 * register with the major number, or get a dynamic major number
2749 * by passing 0 as argument. This is done for greater than
2750 * 8 controller support.
2751 */
2752 if (i < MAX_CTLR_ORIG)
2753 hba[i]->major = MAJOR_NR + i;
2754 rc = register_blkdev(hba[i]->major, hba[i]->devname);
2755 if(rc == -EBUSY || rc == -EINVAL) {
2756 printk(KERN_ERR
2757 "cciss: Unable to get major number %d for %s "
2758 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
2759 goto clean1;
2760 }
2761 else {
2762 if (i >= MAX_CTLR_ORIG)
2763 hba[i]->major = rc;
2764 }
2765
2766 /* make sure the board interrupts are off */
2767 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
2768 if( request_irq(hba[i]->intr, do_cciss_intr,
2769 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
2770 hba[i]->devname, hba[i])) {
2771 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
2772 hba[i]->intr, hba[i]->devname);
2773 goto clean2;
2774 }
2775 hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
2776 hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
2777 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2778 &(hba[i]->cmd_pool_dhandle));
2779 hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
2780 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2781 &(hba[i]->errinfo_pool_dhandle));
2782 if((hba[i]->cmd_pool_bits == NULL)
2783 || (hba[i]->cmd_pool == NULL)
2784 || (hba[i]->errinfo_pool == NULL)) {
2785 printk( KERN_ERR "cciss: out of memory");
2786 goto clean4;
2787 }
2788
2789 spin_lock_init(&hba[i]->lock);
2790
2791 /* Initialize the pdev driver private data.
2792 have it point to hba[i]. */
2793 pci_set_drvdata(pdev, hba[i]);
2794 /* command and error info recs zeroed out before
2795 they are used */
2796 memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
2797
2798 #ifdef CCISS_DEBUG
2799 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
2800 #endif /* CCISS_DEBUG */
2801
2802 cciss_getgeometry(i);
2803
2804 cciss_scsi_setup(i);
2805
2806 /* Turn the interrupts on so we can service requests */
2807 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
2808
2809 cciss_procinit(i);
2810
2811 for(j=0; j < NWD; j++) { /* mfm */
2812 drive_info_struct *drv = &(hba[i]->drv[j]);
2813 struct gendisk *disk = hba[i]->gendisk[j];
2814
2815 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
2816 if (!q) {
2817 printk(KERN_ERR
2818 "cciss: unable to allocate queue for disk %d\n",
2819 j);
2820 break;
2821 }
2822 drv->queue = q;
2823
2824 q->backing_dev_info.ra_pages = READ_AHEAD;
2825 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
2826
2827 /* This is a hardware imposed limit. */
2828 blk_queue_max_hw_segments(q, MAXSGENTRIES);
2829
2830 /* This is a limit in the driver and could be eliminated. */
2831 blk_queue_max_phys_segments(q, MAXSGENTRIES);
2832
2833 blk_queue_max_sectors(q, 512);
2834
2835 q->queuedata = hba[i];
2836 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
2837 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
2838 disk->major = hba[i]->major;
2839 disk->first_minor = j << NWD_SHIFT;
2840 disk->fops = &cciss_fops;
2841 disk->queue = q;
2842 disk->private_data = drv;
2843 /* we must register the controller even if no disks exist */
2844 /* this is for the online array utilities */
2845 if(!drv->heads && j)
2846 continue;
2847 blk_queue_hardsect_size(q, drv->block_size);
2848 set_capacity(disk, drv->nr_blocks);
2849 add_disk(disk);
2850 }
2851
2852 return(1);
2853
2854 clean4:
2855 if(hba[i]->cmd_pool_bits)
2856 kfree(hba[i]->cmd_pool_bits);
2857 if(hba[i]->cmd_pool)
2858 pci_free_consistent(hba[i]->pdev,
2859 NR_CMDS * sizeof(CommandList_struct),
2860 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2861 if(hba[i]->errinfo_pool)
2862 pci_free_consistent(hba[i]->pdev,
2863 NR_CMDS * sizeof( ErrorInfo_struct),
2864 hba[i]->errinfo_pool,
2865 hba[i]->errinfo_pool_dhandle);
2866 free_irq(hba[i]->intr, hba[i]);
2867 clean2:
2868 unregister_blkdev(hba[i]->major, hba[i]->devname);
2869 clean1:
2870 release_io_mem(hba[i]);
2871 free_hba(i);
2872 return(-1);
2873 }
2874
2875 static void __devexit cciss_remove_one (struct pci_dev *pdev)
2876 {
2877 ctlr_info_t *tmp_ptr;
2878 int i, j;
2879 char flush_buf[4];
2880 int return_code;
2881
2882 if (pci_get_drvdata(pdev) == NULL)
2883 {
2884 printk( KERN_ERR "cciss: Unable to remove device \n");
2885 return;
2886 }
2887 tmp_ptr = pci_get_drvdata(pdev);
2888 i = tmp_ptr->ctlr;
2889 if (hba[i] == NULL)
2890 {
2891 printk(KERN_ERR "cciss: device appears to "
2892 "already be removed \n");
2893 return;
2894 }
2895 /* Turn board interrupts off and send the flush cache command */
2896 /* sendcmd will turn off interrupt, and send the flush...
2897 * To write all data in the battery backed cache to disks */
2898 memset(flush_buf, 0, 4);
2899 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
2900 TYPE_CMD);
2901 if(return_code != IO_OK)
2902 {
2903 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
2904 i);
2905 }
2906 free_irq(hba[i]->intr, hba[i]);
2907 pci_set_drvdata(pdev, NULL);
2908 iounmap(hba[i]->vaddr);
2909 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
2910 unregister_blkdev(hba[i]->major, hba[i]->devname);
2911 remove_proc_entry(hba[i]->devname, proc_cciss);
2912
2913 /* remove it from the disk list */
2914 for (j = 0; j < NWD; j++) {
2915 struct gendisk *disk = hba[i]->gendisk[j];
2916 if (disk->flags & GENHD_FL_UP)
2917 blk_cleanup_queue(disk->queue);
2918 del_gendisk(disk);
2919 }
2920
2921 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2922 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2923 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2924 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
2925 kfree(hba[i]->cmd_pool_bits);
2926 release_io_mem(hba[i]);
2927 free_hba(i);
2928 }
2929
2930 static struct pci_driver cciss_pci_driver = {
2931 .name = "cciss",
2932 .probe = cciss_init_one,
2933 .remove = __devexit_p(cciss_remove_one),
2934 .id_table = cciss_pci_device_id, /* id_table */
2935 };
2936
2937 /*
2938 * This is it. Register the PCI driver information for the cards we control
2939 * the OS will call our registered routines when it finds one of our cards.
2940 */
2941 static int __init cciss_init(void)
2942 {
2943 printk(KERN_INFO DRIVER_NAME "\n");
2944
2945 /* Register for our PCI devices */
2946 return pci_module_init(&cciss_pci_driver);
2947 }
2948
2949 static void __exit cciss_cleanup(void)
2950 {
2951 int i;
2952
2953 pci_unregister_driver(&cciss_pci_driver);
2954 /* double check that all controller entrys have been removed */
2955 for (i=0; i< MAX_CTLR; i++)
2956 {
2957 if (hba[i] != NULL)
2958 {
2959 printk(KERN_WARNING "cciss: had to remove"
2960 " controller %d\n", i);
2961 cciss_remove_one(hba[i]->pdev);
2962 }
2963 }
2964 remove_proc_entry("cciss", proc_root_driver);
2965 }
2966
2967 module_init(cciss_init);
2968 module_exit(cciss_cleanup);
Verdex Pro support