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 Cciss-discuss@lists.sourceforge.net
20 *
21 */
22
23 #include <linux/config.h> /* CONFIG_PROC_FS */
24 #include <linux/module.h>
25 #include <linux/version.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/blkpg.h>
34 #include <linux/timer.h>
35 #include <linux/proc_fs.h>
36 #include <linux/init.h>
37 #include <linux/hdreg.h>
38 #include <linux/spinlock.h>
39 #include <asm/uaccess.h>
40 #include <asm/io.h>
41 #include <linux/smp_lock.h>
42
43 #include <linux/blk.h>
44 #include <linux/blkdev.h>
45 #include <linux/genhd.h>
46
47 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
48 #define DRIVER_NAME "HP CISS Driver (v 2.4.60)"
49 #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,4,60)
50
51 /* Embedded module documentation macros - see modules.h */
52 MODULE_AUTHOR("Hewlett-Packard Company");
53 MODULE_DESCRIPTION("Driver for HP SA5xxx SA6xxx Controllers version 2.4.52");
54 MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400 6i SA6422 P600 P400 P400i E200i E200");
55 MODULE_LICENSE("GPL");
56
57 #include "cciss_cmd.h"
58 #include "cciss.h"
59 #include <linux/cciss_ioctl.h>
60
61 /* define the PCI info for the cards we can control */
62 const struct pci_device_id cciss_pci_device_id[] = {
63 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS,
64 0x0E11, 0x4070, 0, 0, 0},
65 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
66 0x0E11, 0x4080, 0, 0, 0},
67 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
68 0x0E11, 0x4082, 0, 0, 0},
69 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
70 0x0E11, 0x4083, 0, 0, 0},
71 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
72 0x0E11, 0x409A, 0, 0, 0},
73 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
74 0x0E11, 0x409B, 0, 0, 0},
75 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
76 0x0E11, 0x409C, 0, 0, 0},
77 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
78 0x0E11, 0x409D, 0, 0, 0},
79 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
80 0x0E11, 0x4091, 0, 0, 0},
81 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
82 0x0E11, 0x409E, 0, 0, 0},
83 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA,
84 0x103C, 0x3225, 0, 0, 0},
85 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
86 0x103C, 0x3234, 0, 0, 0},
87 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
88 0x103C, 0x3235, 0, 0, 0},
89 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
90 0x103C, 0x3211, 0, 0, 0},
91 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
92 0x103C, 0x3212, 0, 0, 0},
93 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
94 0x103C, 0x3213, 0, 0, 0},
95 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
96 0x103C, 0x3214, 0, 0, 0},
97 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
98 0x103C, 0x3215, 0, 0, 0},
99 { PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
100 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
101 {0,}
102 };
103 MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
104
105 #define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
106
107 /* board_id = Subsystem Device ID & Vendor ID
108 * product = Marketing Name for the board
109 * access = Address of the struct of function pointers
110 */
111 static struct board_type products[] = {
112 { 0x40700E11, "Smart Array 5300", &SA5_access},
113 { 0x40800E11, "Smart Array 5i", &SA5B_access},
114 { 0x40820E11, "Smart Array 532", &SA5B_access},
115 { 0x40830E11, "Smart Array 5312", &SA5B_access},
116 { 0x409A0E11, "Smart Array 641", &SA5_access},
117 { 0x409B0E11, "Smart Array 642", &SA5_access},
118 { 0x409C0E11, "Smart Array 6400", &SA5_access},
119 { 0x409D0E11, "Smart Array 6400 EM", &SA5_access},
120 { 0x40910E11, "Smart Array 6i", &SA5_access},
121 { 0x409E0E11, "Smart Array 6422", &SA5_access},
122 { 0x3234103c, "Smart Array P400", &SA5_access},
123 { 0x3235103c, "Smart Array P400i", &SA5_access},
124 { 0x3211103c, "Smart Array E200i", &SA5_access},
125 { 0x3212103c, "Smart Array E200", &SA5_access},
126 { 0x3213103c, "Smart Array E200i", &SA5_access},
127 { 0x3214103c, "Smart Array E200i", &SA5_access},
128 { 0x3215103c, "Smart Array E200i", &SA5_access},
129 { 0xFFFF103C, "Unknown Smart Array", &SA5_access},
130 };
131
132 /* How long to wait (in millesconds) for board to go into simple mode */
133 #define MAX_CONFIG_WAIT 30000
134 #define MAX_IOCTL_CONFIG_WAIT 1000
135
136 /*define how many times we will try a command because of bus resets */
137 #define MAX_CMD_RETRIES 3
138
139 #define READ_AHEAD 128
140 #define NR_CMDS 128 /* #commands that can be outstanding */
141 #define MAX_CTLR 32
142
143 /* No sense in giving up our preallocated major numbers */
144 #if MAX_CTLR < 8
145 #error"cciss.c: MAX_CTLR must be 8 or greater"
146 #endif
147
148 /* Originally cciss driver only supports 8 major number */
149 #define MAX_CTLR_ORIG COMPAQ_CISS_MAJOR7 - COMPAQ_CISS_MAJOR + 1
150
151 #define CCISS_DMA_MASK 0xFFFFFFFFFFFFFFFFULL /* 64 bit DMA */
152
153 #ifdef CONFIG_CISS_MONITOR_THREAD
154 static int cciss_monitor(void *ctlr);
155 static int start_monitor_thread(ctlr_info_t *h, unsigned char *cmd,
156 unsigned long count, int (*cciss_monitor)(void *), int *rc);
157 static u32 heartbeat_timer = 0;
158 #else
159 #define cciss_monitor(x)
160 #define kill_monitor_thead(x)
161 #endif
162
163 static ctlr_info_t *hba[MAX_CTLR];
164 static int map_major_to_ctlr[MAX_BLKDEV] = {0}; /* gets ctlr num from maj num */
165 static struct proc_dir_entry *proc_cciss;
166
167 static void do_cciss_request(request_queue_t *q);
168 static int cciss_open(struct inode *inode, struct file *filep);
169 static int cciss_release(struct inode *inode, struct file *filep);
170 static int cciss_ioctl(struct inode *inode, struct file *filep,
171 unsigned int cmd, unsigned long arg);
172
173 static int revalidate_logvol(kdev_t dev, int maxusage);
174 static int frevalidate_logvol(kdev_t dev);
175 static int deregister_disk(int ctlr, int logvol);
176 static int register_new_disk(int cltr, int opened_vol, __u64 requested_lun);
177 static int cciss_rescan_disk(int cltr, int logvol);
178
179 static void cciss_getgeometry(int cntl_num);
180
181 static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c);
182 static void start_io( ctlr_info_t *h);
183
184 #ifdef CONFIG_PROC_FS
185 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
186 int length, int *eof, void *data);
187 static void cciss_procinit(int i);
188 #else
cciss_proc_get_info(char * buffer,char ** start,off_t offset,int length,int * eof,void * data)189 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
190 int length, int *eof, void *data) { return 0;}
cciss_procinit(int i)191 static void cciss_procinit(int i) {}
192 #endif /* CONFIG_PROC_FS */
193
194 /*
195 * Enqueuing and dequeuing functions for cmdlists.
196 */
addQ(CommandList_struct ** Qptr,CommandList_struct * c)197 static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
198 {
199 if (*Qptr == NULL) {
200 *Qptr = c;
201 c->next = c->prev = c;
202 } else {
203 c->prev = (*Qptr)->prev;
204 c->next = (*Qptr);
205 (*Qptr)->prev->next = c;
206 (*Qptr)->prev = c;
207 }
208 }
209
removeQ(CommandList_struct ** Qptr,CommandList_struct * c)210 static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
211 CommandList_struct *c)
212 {
213 if (c && c->next != c) {
214 if (*Qptr == c) *Qptr = c->next;
215 c->prev->next = c->next;
216 c->next->prev = c->prev;
217 } else {
218 *Qptr = NULL;
219 }
220 return c;
221 }
222
223 static struct block_device_operations cciss_fops = {
224 owner: THIS_MODULE,
225 open: cciss_open,
226 release: cciss_release,
227 ioctl: cciss_ioctl,
228 revalidate: frevalidate_logvol,
229 };
230
231 #include "cciss_scsi.c" /* For SCSI tape support */
232
233 #define ENG_GIG 1048576000
234 #define ENG_GIG_FACTOR (ENG_GIG/512)
235 #define RAID_UNKNOWN 6
236 static const char *raid_label[] = {"0","4","1(0+1)","5","5+1","ADG",
237 "UNKNOWN"};
238 /*
239 * Report information about this controller.
240 */
241 #ifdef CONFIG_PROC_FS
cciss_proc_get_info(char * buffer,char ** start,off_t offset,int length,int * eof,void * data)242 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
243 int length, int *eof, void *data)
244 {
245 off_t pos = 0;
246 off_t len = 0;
247 int size, i, ctlr;
248 ctlr_info_t *h = (ctlr_info_t*)data;
249 drive_info_struct *drv;
250 unsigned long flags;
251 unsigned int vol_sz, vol_sz_frac;
252
253 spin_lock_irqsave(&io_request_lock, flags);
254 if (h->busy_configuring) {
255 spin_unlock_irqrestore(&io_request_lock, flags);
256 return -EBUSY;
257 }
258 h->busy_configuring = 1;
259 spin_unlock_irqrestore(&io_request_lock, flags);
260
261 ctlr = h->ctlr;
262 size = sprintf(buffer, "%s: HP %s Controller\n"
263 "Board ID: 0x%08lx\n"
264 "Firmware Version: %c%c%c%c\n"
265 "IRQ: %d\n"
266 "Logical drives: %d\n"
267 "Current Q depth: %d\n"
268 "Current # commands on controller: %d\n"
269 "Max Q depth since init: %d\n"
270 "Max # commands on controller since init: %d\n"
271 "Max SG entries since init: %d\n"
272 MONITOR_PERIOD_PATTERN
273 MONITOR_DEADLINE_PATTERN
274 MONITOR_STATUS_PATTERN
275 "\n",
276 h->devname,
277 h->product_name,
278 (unsigned long)h->board_id,
279 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
280 (unsigned int)h->intr,
281 h->num_luns,
282 h->Qdepth, h->commands_outstanding,
283 h->maxQsinceinit, h->max_outstanding, h->maxSG,
284 MONITOR_PERIOD_VALUE(h),
285 MONITOR_DEADLINE_VALUE(h),
286 CTLR_STATUS(h));
287
288 pos += size; len += size;
289 cciss_proc_tape_report(ctlr, buffer, &pos, &len);
290 for(i=0; i<=h->highest_lun; i++) {
291 drv = &h->drv[i];
292 if (drv->nr_blocks == 0)
293 continue;
294 vol_sz = drv->nr_blocks/ENG_GIG_FACTOR;
295 vol_sz_frac = (drv->nr_blocks%ENG_GIG_FACTOR)*100/ENG_GIG_FACTOR;
296
297 if (drv->raid_level > 5)
298 drv->raid_level = RAID_UNKNOWN;
299 size = sprintf(buffer+len, "cciss/c%dd%d:"
300 "\t%4d.%02dGB\tRAID %s\n",
301 ctlr, i, vol_sz,vol_sz_frac,
302 raid_label[drv->raid_level]);
303 pos += size, len += size;
304 }
305
306 *eof = 1;
307 *start = buffer+offset;
308 len -= offset;
309 if (len>length)
310 len = length;
311 h->busy_configuring = 0;
312 return len;
313 }
314
315 static int
cciss_proc_write(struct file * file,const char * buffer,unsigned long count,void * data)316 cciss_proc_write(struct file *file, const char *buffer,
317 unsigned long count, void *data)
318 {
319 unsigned char cmd[80];
320 int len;
321 ctlr_info_t *h = (ctlr_info_t *) data;
322 int rc;
323
324 if (count > sizeof(cmd)-1)
325 return -EINVAL;
326 if (copy_from_user(cmd, buffer, count))
327 return -EFAULT;
328 cmd[count] = '\0';
329 len = strlen(cmd);
330 if (cmd[len-1] == '\n')
331 cmd[--len] = '\0';
332
333 # ifdef CONFIG_CISS_SCSI_TAPE
334 if (strcmp("engage scsi", cmd)==0) {
335 rc = cciss_engage_scsi(h->ctlr);
336 if (rc != 0)
337 return -rc;
338 return count;
339 }
340 /* might be nice to have "disengage" too, but it's not
341 safely possible. (only 1 module use count, lock issues.) */
342 # endif
343
344 if (START_MONITOR_THREAD(h, cmd, count, cciss_monitor, &rc) == 0)
345 return rc;
346
347 return -EINVAL;
348 }
349
350 /*
351 * Get us a file in /proc/cciss that says something about each controller.
352 * Create /proc/cciss if it doesn't exist yet.
353 */
cciss_procinit(int i)354 static void __init cciss_procinit(int i)
355 {
356 struct proc_dir_entry *pde;
357
358 if (proc_cciss == NULL) {
359 proc_cciss = proc_mkdir("cciss", proc_root_driver);
360 if (!proc_cciss) {
361 printk("cciss: proc_mkdir failed\n");
362 return;
363 }
364 }
365
366 pde = create_proc_read_entry(hba[i]->devname,
367 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
368 proc_cciss, cciss_proc_get_info, hba[i]);
369 pde->write_proc = cciss_proc_write;
370 }
371 #endif /* CONFIG_PROC_FS */
372
373 /*
374 * For operations that cannot sleep, a command block is allocated at init,
375 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
376 * which ones are free or in use. For operations that can wait for kmalloc
377 * to possible sleep, this routine can be called with get_from_pool set to 0.
378 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
379 */
cmd_alloc(ctlr_info_t * h,int get_from_pool)380 static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
381 {
382 CommandList_struct *c;
383 int i;
384 u64bit temp64;
385 dma_addr_t cmd_dma_handle, err_dma_handle;
386
387 if (!get_from_pool) {
388 c = (CommandList_struct *) pci_alloc_consistent(
389 h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
390 if (c==NULL)
391 return NULL;
392 memset(c, 0, sizeof(CommandList_struct));
393
394 c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
395 h->pdev, sizeof(ErrorInfo_struct),
396 &err_dma_handle);
397
398 if (c->err_info == NULL)
399 {
400 pci_free_consistent(h->pdev,
401 sizeof(CommandList_struct), c, cmd_dma_handle);
402 return NULL;
403 }
404 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
405 } else /* get it out of the controllers pool */
406 {
407 do {
408 i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
409 if (i == NR_CMDS)
410 return NULL;
411 } while(test_and_set_bit(i%32, h->cmd_pool_bits+(i/32)) != 0);
412 #ifdef CCISS_DEBUG
413 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
414 #endif
415 c = h->cmd_pool + i;
416 memset(c, 0, sizeof(CommandList_struct));
417 cmd_dma_handle = h->cmd_pool_dhandle
418 + i*sizeof(CommandList_struct);
419 c->err_info = h->errinfo_pool + i;
420 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
421 err_dma_handle = h->errinfo_pool_dhandle
422 + i*sizeof(ErrorInfo_struct);
423 h->nr_allocs++;
424 }
425
426 c->busaddr = (__u32) cmd_dma_handle;
427 temp64.val = (__u64) err_dma_handle;
428 c->ErrDesc.Addr.lower = temp64.val32.lower;
429 c->ErrDesc.Addr.upper = temp64.val32.upper;
430 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
431
432 c->ctlr = h->ctlr;
433 return c;
434
435
436 }
437
438 /*
439 * Frees a command block that was previously allocated with cmd_alloc().
440 */
cmd_free(ctlr_info_t * h,CommandList_struct * c,int got_from_pool)441 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
442 {
443 int i;
444 u64bit temp64;
445
446 if (!got_from_pool) {
447 temp64.val32.lower = c->ErrDesc.Addr.lower;
448 temp64.val32.upper = c->ErrDesc.Addr.upper;
449 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
450 c->err_info, (dma_addr_t) temp64.val);
451 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
452 c, (dma_addr_t) c->busaddr);
453 } else
454 {
455 i = c - h->cmd_pool;
456 clear_bit(i%32, h->cmd_pool_bits+(i/32));
457 h->nr_frees++;
458 }
459 }
460
461 /*
462 * fills in the disk information.
463 */
cciss_geninit(int ctlr)464 static void cciss_geninit( int ctlr)
465 {
466 drive_info_struct *drv;
467 int i,j;
468
469 /* Loop through each real device */
470 hba[ctlr]->gendisk.nr_real = 0;
471 for(i=0; i< NWD; i++) {
472 drv = &(hba[ctlr]->drv[i]);
473 if (!(drv->nr_blocks))
474 continue;
475 hba[ctlr]->hd[i << NWD_SHIFT].nr_sects =
476 hba[ctlr]->sizes[i << NWD_SHIFT] = drv->nr_blocks;
477
478 /* for each partition */
479 for(j=0; j<MAX_PART; j++) {
480 hba[ctlr]->blocksizes[(i<<NWD_SHIFT) + j] = 1024;
481
482 hba[ctlr]->hardsizes[ (i<<NWD_SHIFT) + j] =
483 drv->block_size;
484 }
485 }
486 hba[ctlr]->gendisk.nr_real = hba[ctlr]->highest_lun+1;
487 }
488 /*
489 * Open. Make sure the device is really there.
490 */
cciss_open(struct inode * inode,struct file * filep)491 static int cciss_open(struct inode *inode, struct file *filep)
492 {
493 int ctlr = map_major_to_ctlr[MAJOR(inode->i_rdev)];
494 int dsk = MINOR(inode->i_rdev) >> NWD_SHIFT;
495
496 #ifdef CCISS_DEBUG
497 printk(KERN_DEBUG "cciss_open %x (%x:%x)\n", inode->i_rdev, ctlr, dsk);
498 #endif /* CCISS_DEBUG */
499
500 if (ctlr > MAX_CTLR || hba[ctlr] == NULL || !CTLR_IS_ALIVE(hba[ctlr]))
501 return -ENXIO;
502 /*
503 * Root is allowed to open raw volume zero even if its not configured
504 * so array config can still work. Root is also allowed to open any
505 * volume that has a LUN ID, so it can issue IOCTL to reread the
506 * disk information. I don't think I really like this.
507 * but I'm already using way to many device nodes to claim another one
508 * for "raw controller".
509 */
510 if (hba[ctlr]->sizes[MINOR(inode->i_rdev)] == 0) { /* not online? */
511 if (MINOR(inode->i_rdev) != 0) { /* not node 0? */
512 /* if not node 0 make sure it is a partition = 0 */
513 if (MINOR(inode->i_rdev) & 0x0f) {
514 return -ENXIO;
515 /* if it is, make sure we have a LUN ID */
516 } else if (hba[ctlr]->drv[MINOR(inode->i_rdev)
517 >> NWD_SHIFT].LunID == 0) {
518 return -ENXIO;
519 }
520 }
521 if (!capable(CAP_SYS_ADMIN))
522 return -EPERM;
523 }
524
525 hba[ctlr]->drv[dsk].usage_count++;
526 hba[ctlr]->usage_count++;
527 return 0;
528 }
529 /*
530 * Close. Sync first.
531 */
cciss_release(struct inode * inode,struct file * filep)532 static int cciss_release(struct inode *inode, struct file *filep)
533 {
534 int ctlr = map_major_to_ctlr[MAJOR(inode->i_rdev)];
535 int dsk = MINOR(inode->i_rdev) >> NWD_SHIFT;
536
537 #ifdef CCISS_DEBUG
538 printk(KERN_DEBUG "cciss_release %x (%x:%x)\n", inode->i_rdev, ctlr, dsk);
539 #endif /* CCISS_DEBUG */
540
541 /* fsync_dev(inode->i_rdev); */
542
543 hba[ctlr]->drv[dsk].usage_count--;
544 hba[ctlr]->usage_count--;
545 return 0;
546 }
547
548 #ifdef __x86_64__
549 /* for AMD 64 bit kernel compatibility with 32-bit userland ioctls */
550 extern int sys_ioctl(unsigned int fd, unsigned cmd, unsigned long arg);
551
552 extern int
553 register_ioctl32_conversion(unsigned int cmd, int (*handler)(unsigned int,
554 unsigned int, unsigned long, struct file *));
555 extern int unregister_ioctl32_conversion(unsigned int cmd);
556
557 static int cciss_ioctl32_passthru(unsigned int fd, unsigned cmd, unsigned long arg, struct file *file);
558 static int cciss_ioctl32_big_passthru(unsigned int fd, unsigned cmd, unsigned long arg, struct file *file);
559
560 typedef int (*handler_type) (unsigned int, unsigned int, unsigned long,
561 struct file *);
562
563 static struct ioctl32_map {
564 unsigned int cmd;
565 handler_type handler;
566 int registered;
567 } cciss_ioctl32_map[] = {
568 { CCISS_GETPCIINFO, (handler_type) sys_ioctl, 0 },
569 { CCISS_GETINTINFO, (handler_type) sys_ioctl, 0 },
570 { CCISS_SETINTINFO, (handler_type) sys_ioctl, 0 },
571 { CCISS_GETNODENAME, (handler_type) sys_ioctl, 0 },
572 { CCISS_SETNODENAME, (handler_type) sys_ioctl, 0 },
573 { CCISS_GETHEARTBEAT, (handler_type) sys_ioctl, 0 },
574 { CCISS_GETBUSTYPES, (handler_type) sys_ioctl, 0 },
575 { CCISS_GETFIRMVER, (handler_type) sys_ioctl, 0 },
576 { CCISS_GETDRIVVER, (handler_type) sys_ioctl, 0 },
577 { CCISS_REVALIDVOLS, (handler_type) sys_ioctl, 0 },
578 { CCISS_PASSTHRU32, cciss_ioctl32_passthru, 0 },
579 { CCISS_DEREGDISK, (handler_type) sys_ioctl, 0 },
580 { CCISS_REGNEWDISK, (handler_type) sys_ioctl, 0 },
581 { CCISS_REGNEWD, (handler_type) sys_ioctl, 0 },
582 { CCISS_RESCANDISK, (handler_type) sys_ioctl, 0 },
583 { CCISS_GETLUNINFO, (handler_type) sys_ioctl, 0 },
584 { CCISS_BIG_PASSTHRU32, cciss_ioctl32_big_passthru, 0 },
585 };
586 #define NCCISS_IOCTL32_ENTRIES (sizeof(cciss_ioctl32_map) / sizeof(cciss_ioctl32_map[0]))
register_cciss_ioctl32(void)587 static void register_cciss_ioctl32(void)
588 {
589 int i, rc;
590
591 for (i=0; i < NCCISS_IOCTL32_ENTRIES; i++) {
592 rc = register_ioctl32_conversion(
593 cciss_ioctl32_map[i].cmd,
594 cciss_ioctl32_map[i].handler);
595 if (rc != 0) {
596 printk(KERN_WARNING "cciss: failed to register "
597 "32 bit compatible ioctl 0x%08x\n",
598 cciss_ioctl32_map[i].cmd);
599 cciss_ioctl32_map[i].registered = 0;
600 } else
601 cciss_ioctl32_map[i].registered = 1;
602 }
603 }
unregister_cciss_ioctl32(void)604 static void unregister_cciss_ioctl32(void)
605 {
606 int i, rc;
607
608 for (i=0; i < NCCISS_IOCTL32_ENTRIES; i++) {
609 if (!cciss_ioctl32_map[i].registered)
610 continue;
611 rc = unregister_ioctl32_conversion(
612 cciss_ioctl32_map[i].cmd);
613 if (rc == 0) {
614 cciss_ioctl32_map[i].registered = 0;
615 continue;
616 }
617 printk(KERN_WARNING "cciss: failed to unregister "
618 "32 bit compatible ioctl 0x%08x\n",
619 cciss_ioctl32_map[i].cmd);
620 }
621 }
cciss_ioctl32_passthru(unsigned int fd,unsigned cmd,unsigned long arg,struct file * file)622 int cciss_ioctl32_passthru(unsigned int fd, unsigned cmd, unsigned long arg,
623 struct file *file)
624 {
625 IOCTL32_Command_struct *arg32 =
626 (IOCTL32_Command_struct *) arg;
627 IOCTL_Command_struct arg64;
628 mm_segment_t old_fs;
629 int err;
630 __u64 tmp_ptr;
631
632 err = 0;
633 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
634 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
635 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
636 err |= get_user(arg64.buf_size, &arg32->buf_size);
637 err |= get_user(tmp_ptr, &arg32->buf);
638 arg64.buf = (BYTE *) tmp_ptr;
639 if (err)
640 return -EFAULT;
641
642 old_fs = get_fs();
643 set_fs(KERNEL_DS);
644 err = sys_ioctl(fd, CCISS_PASSTHRU, (unsigned long) &arg64);
645 set_fs(old_fs);
646 if (err)
647 return err;
648 err |= copy_to_user(&arg32->error_info, &arg64.error_info, sizeof(arg32->error_info));
649 if (err)
650 return -EFAULT;
651 return err;
652 }
cciss_ioctl32_big_passthru(unsigned int fd,unsigned cmd,unsigned long arg,struct file * file)653 int cciss_ioctl32_big_passthru(unsigned int fd, unsigned cmd, unsigned long arg,
654 struct file *file)
655 {
656 BIG_IOCTL32_Command_struct *arg32 =
657 (BIG_IOCTL32_Command_struct *) arg;
658 BIG_IOCTL_Command_struct arg64;
659 mm_segment_t old_fs;
660 int err;
661 __u64 tmp_ptr;
662
663 err = 0;
664 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
665 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
666 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
667 err |= get_user(arg64.buf_size, &arg32->buf_size);
668 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
669 err |= get_user(tmp_ptr, &arg32->buf);
670 arg64.buf = (BYTE *) tmp_ptr;
671 if (err) return -EFAULT;
672 old_fs = get_fs();
673 set_fs(KERNEL_DS);
674 err = sys_ioctl(fd, CCISS_BIG_PASSTHRU, (unsigned long) &arg64);
675 set_fs(old_fs);
676 if (err)
677 return err;
678 err |= copy_to_user(&arg32->error_info, &arg64.error_info, sizeof(arg32->error_info));
679 if (err)
680 return -EFAULT;
681 return err;
682 }
683 #else
register_cciss_ioctl32(void)684 static inline void register_cciss_ioctl32(void) {}
unregister_cciss_ioctl32(void)685 static inline void unregister_cciss_ioctl32(void) {}
686 #endif
687
688 /*
689 * ioctl
690 */
cciss_ioctl(struct inode * inode,struct file * filep,unsigned int cmd,unsigned long arg)691 static int cciss_ioctl(struct inode *inode, struct file *filep,
692 unsigned int cmd, unsigned long arg)
693 {
694 int ctlr = map_major_to_ctlr[MAJOR(inode->i_rdev)];
695 int dsk = MINOR(inode->i_rdev) >> NWD_SHIFT;
696
697 #ifdef CCISS_DEBUG
698 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
699 #endif /* CCISS_DEBUG */
700
701 switch(cmd) {
702 case HDIO_GETGEO:
703 {
704 struct hd_geometry driver_geo;
705 if (hba[ctlr]->drv[dsk].cylinders) {
706 driver_geo.heads = hba[ctlr]->drv[dsk].heads;
707 driver_geo.sectors = hba[ctlr]->drv[dsk].sectors;
708 driver_geo.cylinders = hba[ctlr]->drv[dsk].cylinders;
709 } else
710 return -ENXIO;
711 driver_geo.start=
712 hba[ctlr]->hd[MINOR(inode->i_rdev)].start_sect;
713 if (copy_to_user((void *) arg, &driver_geo,
714 sizeof( struct hd_geometry)))
715 return -EFAULT;
716 return 0;
717 }
718 case HDIO_GETGEO_BIG:
719 {
720 struct hd_big_geometry driver_geo;
721 if (hba[ctlr]->drv[dsk].cylinders) {
722 driver_geo.heads = hba[ctlr]->drv[dsk].heads;
723 driver_geo.sectors = hba[ctlr]->drv[dsk].sectors;
724 driver_geo.cylinders = hba[ctlr]->drv[dsk].cylinders;
725 } else
726 return -ENXIO;
727 driver_geo.start=
728 hba[ctlr]->hd[MINOR(inode->i_rdev)].start_sect;
729 if (copy_to_user((void *) arg, &driver_geo,
730 sizeof( struct hd_big_geometry)))
731 return -EFAULT;
732 return 0;
733 }
734 case BLKRRPART:
735 if (!capable(CAP_SYS_ADMIN))
736 return -EPERM;
737 return revalidate_logvol(inode->i_rdev, 1);
738 case BLKGETSIZE:
739 case BLKGETSIZE64:
740 case BLKFLSBUF:
741 case BLKBSZSET:
742 case BLKBSZGET:
743 case BLKROSET:
744 case BLKROGET:
745 case BLKRASET:
746 case BLKRAGET:
747 case BLKPG:
748 case BLKELVGET:
749 case BLKELVSET:
750 return blk_ioctl(inode->i_rdev, cmd, arg);
751 case CCISS_GETPCIINFO:
752 {
753 cciss_pci_info_struct pciinfo;
754
755 if (!arg)
756 return -EINVAL;
757 pciinfo.bus = hba[ctlr]->pdev->bus->number;
758 pciinfo.dev_fn = hba[ctlr]->pdev->devfn;
759 pciinfo.board_id = hba[ctlr]->board_id;
760 if (copy_to_user((void *) arg, &pciinfo, sizeof( cciss_pci_info_struct )))
761 return -EFAULT;
762 return 0;
763 }
764 case CCISS_GETINTINFO:
765 {
766 cciss_coalint_struct intinfo;
767 ctlr_info_t *c = hba[ctlr];
768
769 if (!arg)
770 return -EINVAL;
771 intinfo.delay = readl(&c->cfgtable->HostWrite.CoalIntDelay);
772 intinfo.count = readl(&c->cfgtable->HostWrite.CoalIntCount);
773 if (copy_to_user((void *) arg, &intinfo, sizeof( cciss_coalint_struct )))
774 return -EFAULT;
775 return 0;
776 }
777 case CCISS_SETINTINFO:
778 {
779 cciss_coalint_struct intinfo;
780 ctlr_info_t *c = hba[ctlr];
781 unsigned long flags;
782 int i;
783
784 if (!arg)
785 return -EINVAL;
786 if (!capable(CAP_SYS_ADMIN))
787 return -EPERM;
788 if (copy_from_user(&intinfo, (void *) arg, sizeof( cciss_coalint_struct)))
789 return -EFAULT;
790 if ( (intinfo.delay == 0 ) && (intinfo.count == 0)) {
791 return -EINVAL;
792 }
793
794 spin_lock_irqsave(&io_request_lock, flags);
795 /* Can only safely update if no commands outstanding */
796 if (c->commands_outstanding > 0 ) {
797 spin_unlock_irqrestore(&io_request_lock, flags);
798 return -EINVAL;
799 }
800 /* Update the field, and then ring the doorbell */
801 writel( intinfo.delay,
802 &(c->cfgtable->HostWrite.CoalIntDelay));
803 writel( intinfo.count,
804 &(c->cfgtable->HostWrite.CoalIntCount));
805 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
806
807 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
808 if (!(readl(c->vaddr + SA5_DOORBELL)
809 & CFGTBL_ChangeReq))
810 break;
811 /* delay and try again */
812 udelay(1000);
813 }
814 spin_unlock_irqrestore(&io_request_lock, flags);
815 if (i >= MAX_IOCTL_CONFIG_WAIT)
816 /* there is an unlikely case where this can happen,
817 * involving hot replacing a failed 144 GB drive in a
818 * RAID 5 set just as we attempt this ioctl. */
819 return -EAGAIN;
820 return 0;
821 }
822 case CCISS_GETNODENAME:
823 {
824 NodeName_type NodeName;
825 ctlr_info_t *c = hba[ctlr];
826 int i;
827
828 if (!arg)
829 return -EINVAL;
830 for(i=0;i<16;i++)
831 NodeName[i] = readb(&c->cfgtable->ServerName[i]);
832 if (copy_to_user((void *) arg, NodeName, sizeof( NodeName_type)))
833 return -EFAULT;
834 return 0;
835 }
836 case CCISS_SETNODENAME:
837 {
838 NodeName_type NodeName;
839 ctlr_info_t *c = hba[ctlr];
840 unsigned long flags;
841 int i;
842
843 if (!arg)
844 return -EINVAL;
845 if (!capable(CAP_SYS_ADMIN))
846 return -EPERM;
847
848 if (copy_from_user(NodeName, (void *) arg, sizeof( NodeName_type)))
849 return -EFAULT;
850
851 spin_lock_irqsave(&io_request_lock, flags);
852
853 /* Update the field, and then ring the doorbell */
854 for(i=0;i<16;i++)
855 writeb( NodeName[i], &c->cfgtable->ServerName[i]);
856
857 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
858
859 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
860 if (!(readl(c->vaddr + SA5_DOORBELL)
861 & CFGTBL_ChangeReq))
862 break;
863 /* delay and try again */
864 udelay(1000);
865 }
866 spin_unlock_irqrestore(&io_request_lock, flags);
867 if (i >= MAX_IOCTL_CONFIG_WAIT)
868 /* there is an unlikely case where this can happen,
869 * involving hot replacing a failed 144 GB drive in a
870 * RAID 5 set just as we attempt this ioctl. */
871 return -EAGAIN;
872 return 0;
873 }
874
875 case CCISS_GETHEARTBEAT:
876 {
877 Heartbeat_type heartbeat;
878 ctlr_info_t *c = hba[ctlr];
879
880 if (!arg)
881 return -EINVAL;
882 heartbeat = readl(&c->cfgtable->HeartBeat);
883 if (copy_to_user((void *) arg, &heartbeat, sizeof( Heartbeat_type)))
884 return -EFAULT;
885 return 0;
886 }
887 case CCISS_GETBUSTYPES:
888 {
889 BusTypes_type BusTypes;
890 ctlr_info_t *c = hba[ctlr];
891
892 if (!arg)
893 return -EINVAL;
894 BusTypes = readl(&c->cfgtable->BusTypes);
895 if (copy_to_user((void *) arg, &BusTypes, sizeof( BusTypes_type) ))
896 return -EFAULT;
897 return 0;
898 }
899 case CCISS_GETFIRMVER:
900 {
901 FirmwareVer_type firmware;
902
903 if (!arg)
904 return -EINVAL;
905 memcpy(firmware, hba[ctlr]->firm_ver, 4);
906
907 if (copy_to_user((void *) arg, firmware, sizeof( FirmwareVer_type)))
908 return -EFAULT;
909 return 0;
910 }
911 case CCISS_GETDRIVVER:
912 {
913 DriverVer_type DriverVer = DRIVER_VERSION;
914
915 if (!arg)
916 return -EINVAL;
917
918 if (copy_to_user((void *) arg, &DriverVer, sizeof( DriverVer_type) ))
919 return -EFAULT;
920 return 0;
921 }
922 case CCISS_RESCANDISK:
923 {
924 return cciss_rescan_disk(ctlr, dsk);
925 }
926 case CCISS_DEREGDISK:
927 return deregister_disk(ctlr,dsk);
928
929 case CCISS_REGNEWD:
930 return register_new_disk(ctlr, dsk, 0);
931 case CCISS_REGNEWDISK:
932 {
933 __u64 new_logvol;
934
935 if (!arg)
936 return -EINVAL;
937 if (copy_from_user(&new_logvol, (void *) arg,
938 sizeof( __u64)))
939 return -EFAULT;
940 return register_new_disk(ctlr, dsk, new_logvol);
941 }
942 case CCISS_GETLUNINFO:
943 {
944 LogvolInfo_struct luninfo;
945 int num_parts = 0;
946 int i, start;
947
948 luninfo.LunID = hba[ctlr]->drv[dsk].LunID;
949 luninfo.num_opens = hba[ctlr]->drv[dsk].usage_count;
950
951 /* count partitions 1 to 15 with sizes > 0 */
952 start = (dsk << NWD_SHIFT);
953 for(i=1; i <MAX_PART; i++) {
954 int minor = start+i;
955 if (hba[ctlr]->sizes[minor] != 0)
956 num_parts++;
957 }
958 luninfo.num_parts = num_parts;
959 if (copy_to_user((void *) arg, &luninfo,
960 sizeof( LogvolInfo_struct) ))
961 return -EFAULT;
962 return 0;
963 }
964 case CCISS_PASSTHRU:
965 {
966 IOCTL_Command_struct iocommand;
967 ctlr_info_t *h = hba[ctlr];
968 CommandList_struct *c;
969 char *buff = NULL;
970 u64bit temp64;
971 unsigned long flags;
972 DECLARE_COMPLETION(wait);
973
974 if (!arg)
975 return -EINVAL;
976
977 if (!capable(CAP_SYS_RAWIO))
978 return -EPERM;
979
980 if (copy_from_user(&iocommand, (void *) arg, sizeof( IOCTL_Command_struct) ))
981 return -EFAULT;
982 if ((iocommand.buf_size < 1) &&
983 (iocommand.Request.Type.Direction
984 != XFER_NONE)) {
985 return -EINVAL;
986 }
987 /* Check kmalloc limits */
988 if (iocommand.buf_size > 128000)
989 return -EINVAL;
990 if (iocommand.buf_size > 0) {
991 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
992 if (buff == NULL)
993 return -ENOMEM;
994 }
995 if (iocommand.Request.Type.Direction == XFER_WRITE) {
996 /* Copy the data into the buffer we created */
997 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
998 {
999 kfree(buff);
1000 return -EFAULT;
1001 }
1002 }
1003 else
1004 memset(buff, 0, iocommand.buf_size);
1005 if ((c = cmd_alloc(h , 0)) == NULL) {
1006 kfree(buff);
1007 return -ENOMEM;
1008 }
1009 /* Fill in the command type */
1010 c->cmd_type = CMD_IOCTL_PEND;
1011 /* Fill in Command Header */
1012 c->Header.ReplyQueue = 0; /* unused in simple mode */
1013 if (iocommand.buf_size > 0) { /* buffer to fill */
1014 c->Header.SGList = 1;
1015 c->Header.SGTotal= 1;
1016 } else { /* no buffers to fill */
1017 c->Header.SGList = 0;
1018 c->Header.SGTotal= 0;
1019 }
1020 c->Header.LUN = iocommand.LUN_info;
1021 c->Header.Tag.lower = c->busaddr; /* use the kernel address */
1022 /* the cmd block for tag */
1023
1024 /* Fill in Request block */
1025 c->Request = iocommand.Request;
1026
1027 /* Fill in the scatter gather information */
1028 if (iocommand.buf_size > 0 ) {
1029 temp64.val = pci_map_single( h->pdev, buff,
1030 iocommand.buf_size,
1031 PCI_DMA_BIDIRECTIONAL);
1032 c->SG[0].Addr.lower = temp64.val32.lower;
1033 c->SG[0].Addr.upper = temp64.val32.upper;
1034 c->SG[0].Len = iocommand.buf_size;
1035 c->SG[0].Ext = 0; /* we are not chaining */
1036 }
1037 c->waiting = &wait;
1038
1039 /* Put the request on the tail of the request queue */
1040 spin_lock_irqsave(&io_request_lock, flags);
1041 addQ(&h->reqQ, c);
1042 h->Qdepth++;
1043 start_io(h);
1044 spin_unlock_irqrestore(&io_request_lock, flags);
1045
1046 wait_for_completion(&wait);
1047
1048 /* unlock the buffers from DMA */
1049 temp64.val32.lower = c->SG[0].Addr.lower;
1050 temp64.val32.upper = c->SG[0].Addr.upper;
1051 pci_unmap_single( h->pdev, (dma_addr_t) temp64.val,
1052 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
1053
1054 /* Copy the error information out */
1055 iocommand.error_info = *(c->err_info);
1056 if (copy_to_user((void *) arg, &iocommand,
1057 sizeof( IOCTL_Command_struct) ) ) {
1058 kfree(buff);
1059 cmd_free(h, c, 0);
1060 return( -EFAULT);
1061 }
1062
1063 if (iocommand.Request.Type.Direction == XFER_READ) {
1064 /* Copy the data out of the buffer we created */
1065 if (copy_to_user(iocommand.buf, buff,
1066 iocommand.buf_size)) {
1067 kfree(buff);
1068 cmd_free(h, c, 0);
1069 return -EFAULT;
1070 }
1071 }
1072 kfree(buff);
1073 cmd_free(h, c, 0);
1074 return 0;
1075 }
1076 case CCISS_BIG_PASSTHRU:
1077 {
1078 BIG_IOCTL_Command_struct iocommand;
1079 ctlr_info_t *h = hba[ctlr];
1080 CommandList_struct *c;
1081 char *buff[MAXSGENTRIES] = {NULL,};
1082 int buff_size[MAXSGENTRIES] = {0,};
1083 u64bit temp64;
1084 unsigned long flags;
1085 BYTE sg_used = 0;
1086 int status = 0;
1087 int i;
1088 DECLARE_COMPLETION(wait);
1089
1090 if (!arg)
1091 return -EINVAL;
1092
1093 if (!capable(CAP_SYS_RAWIO))
1094 return -EPERM;
1095
1096 if (copy_from_user(&iocommand, (void *) arg, sizeof( BIG_IOCTL_Command_struct) ))
1097 return -EFAULT;
1098 if ((iocommand.buf_size < 1) &&
1099 (iocommand.Request.Type.Direction != XFER_NONE)) {
1100 return -EINVAL;
1101 }
1102 /* Check kmalloc limits using all SGs */
1103 if (iocommand.malloc_size > MAX_KMALLOC_SIZE)
1104 return -EINVAL;
1105 if (iocommand.buf_size > iocommand.malloc_size * MAXSGENTRIES)
1106 return -EINVAL;
1107 if (iocommand.buf_size > 0) {
1108 __u32 size_left_alloc = iocommand.buf_size;
1109 BYTE *data_ptr = (BYTE *) iocommand.buf;
1110 while (size_left_alloc > 0) {
1111 buff_size[sg_used] = (size_left_alloc
1112 > iocommand.malloc_size)
1113 ? iocommand.malloc_size : size_left_alloc;
1114 buff[sg_used] = kmalloc( buff_size[sg_used],
1115 GFP_KERNEL);
1116 if (buff[sg_used] == NULL) {
1117 status = -ENOMEM;
1118 goto cleanup1;
1119 }
1120 if (iocommand.Request.Type.Direction ==
1121 XFER_WRITE) {
1122 /* Copy the data into the buffer created */
1123 if (copy_from_user(buff[sg_used], data_ptr,
1124 buff_size[sg_used])) {
1125 status = -EFAULT;
1126 goto cleanup1;
1127 }
1128 }
1129 else
1130 memset(buff[sg_used], 0, buff_size[sg_used]);
1131 size_left_alloc -= buff_size[sg_used];
1132 data_ptr += buff_size[sg_used];
1133 sg_used++;
1134 }
1135
1136 }
1137 if ((c = cmd_alloc(h , 0)) == NULL) {
1138 status = -ENOMEM;
1139 goto cleanup1;
1140 }
1141 /* Fill in the command type */
1142 c->cmd_type = CMD_IOCTL_PEND;
1143 /* Fill in Command Header */
1144 c->Header.ReplyQueue = 0; /* unused in simple mode */
1145
1146 if (iocommand.buf_size > 0) { /* buffer to fill */
1147 c->Header.SGList = sg_used;
1148 c->Header.SGTotal= sg_used;
1149 } else { /* no buffers to fill */
1150 c->Header.SGList = 0;
1151 c->Header.SGTotal= 0;
1152 }
1153 c->Header.LUN = iocommand.LUN_info;
1154 c->Header.Tag.lower = c->busaddr; /* use the kernel address */
1155 /* the cmd block for tag */
1156
1157 /* Fill in Request block */
1158 c->Request = iocommand.Request;
1159 /* Fill in the scatter gather information */
1160 if (iocommand.buf_size > 0 ) {
1161 int i;
1162 for(i=0; i< sg_used; i++) {
1163 temp64.val = pci_map_single( h->pdev, buff[i],
1164 buff_size[i],
1165 PCI_DMA_BIDIRECTIONAL);
1166
1167 c->SG[i].Addr.lower = temp64.val32.lower;
1168 c->SG[i].Addr.upper = temp64.val32.upper;
1169 c->SG[i].Len = buff_size[i];
1170 c->SG[i].Ext = 0; /* we are not chaining */
1171 }
1172 }
1173 c->waiting = &wait;
1174 /* Put the request on the tail of the request queue */
1175 spin_lock_irqsave(&io_request_lock, flags);
1176 addQ(&h->reqQ, c);
1177 h->Qdepth++;
1178 start_io(h);
1179 spin_unlock_irqrestore(&io_request_lock, flags);
1180 wait_for_completion(&wait);
1181 /* unlock the buffers from DMA */
1182 for(i=0; i< sg_used; i++) {
1183 temp64.val32.lower = c->SG[i].Addr.lower;
1184 temp64.val32.upper = c->SG[i].Addr.upper;
1185 pci_unmap_single( h->pdev, (dma_addr_t) temp64.val,
1186 buff_size[i], PCI_DMA_BIDIRECTIONAL);
1187 }
1188 /* Copy the error information out */
1189 iocommand.error_info = *(c->err_info);
1190 if (copy_to_user((void *) arg, &iocommand,
1191 sizeof( IOCTL_Command_struct) ) ) {
1192 cmd_free(h, c, 0);
1193 status = -EFAULT;
1194 goto cleanup1;
1195 }
1196 if (iocommand.Request.Type.Direction == XFER_READ) {
1197 /* Copy the data out of the buffer we created */
1198 BYTE *ptr = (BYTE *) iocommand.buf;
1199 for(i=0; i< sg_used; i++) {
1200 if (copy_to_user(ptr, buff[i], buff_size[i])) {
1201 cmd_free(h, c, 0);
1202 status = -EFAULT;
1203 goto cleanup1;
1204
1205 }
1206 ptr += buff_size[i];
1207 }
1208 }
1209 cmd_free(h, c, 0);
1210 status = 0;
1211
1212
1213 cleanup1:
1214 for(i=0; i< sg_used; i++) {
1215 if (buff[i] != NULL)
1216 kfree(buff[i]);
1217 }
1218 return status;
1219 }
1220 default:
1221 return -EBADRQC;
1222 }
1223
1224 }
1225
1226 /* Borrowed and adapted from sd.c */
revalidate_logvol(kdev_t dev,int maxusage)1227 static int revalidate_logvol(kdev_t dev, int maxusage)
1228 {
1229 int ctlr, target;
1230 struct gendisk *gdev;
1231 unsigned long flags;
1232 int max_p;
1233 int start;
1234 int i;
1235
1236 target = MINOR(dev) >> NWD_SHIFT;
1237 ctlr = map_major_to_ctlr[MAJOR(dev)];
1238 gdev = &(hba[ctlr]->gendisk);
1239
1240 spin_lock_irqsave(&io_request_lock, flags);
1241 if (hba[ctlr]->drv[target].usage_count > maxusage) {
1242 spin_unlock_irqrestore(&io_request_lock, flags);
1243 printk(KERN_WARNING "cciss: Device busy for "
1244 "revalidation (usage=%d)\n",
1245 hba[ctlr]->drv[target].usage_count);
1246 return -EBUSY;
1247 }
1248 hba[ctlr]->drv[target].usage_count++;
1249 spin_unlock_irqrestore(&io_request_lock, flags);
1250
1251 max_p = gdev->max_p;
1252 start = target << gdev->minor_shift;
1253
1254 for(i=max_p-1; i>=0; i--) {
1255 int minor = start+i;
1256 invalidate_device(MKDEV(hba[ctlr]->major, minor), 1);
1257 gdev->part[minor].start_sect = 0;
1258 gdev->part[minor].nr_sects = 0;
1259
1260 /* reset the blocksize so we can read the partition table */
1261 blksize_size[hba[ctlr]->major][minor] = 1024;
1262 }
1263 /* setup partitions per disk */
1264 grok_partitions(gdev, target, MAX_PART,
1265 hba[ctlr]->drv[target].nr_blocks);
1266 hba[ctlr]->drv[target].usage_count--;
1267 return 0;
1268 }
1269
frevalidate_logvol(kdev_t dev)1270 static int frevalidate_logvol(kdev_t dev)
1271 {
1272 #ifdef CCISS_DEBUG
1273 printk(KERN_DEBUG "cciss: frevalidate has been called\n");
1274 #endif /* CCISS_DEBUG */
1275 return revalidate_logvol(dev, 0);
1276 }
deregister_disk(int ctlr,int logvol)1277 static int deregister_disk(int ctlr, int logvol)
1278 {
1279 unsigned long flags;
1280 struct gendisk *gdev = &(hba[ctlr]->gendisk);
1281 ctlr_info_t *h = hba[ctlr];
1282 int start, max_p, i;
1283
1284 if (!capable(CAP_SYS_RAWIO))
1285 return -EPERM;
1286
1287 spin_lock_irqsave(&io_request_lock, flags);
1288 /* make sure logical volume is NOT is use */
1289 if (h->drv[logvol].usage_count > 1 || h->busy_configuring) {
1290 spin_unlock_irqrestore(&io_request_lock, flags);
1291 return -EBUSY;
1292 }
1293 h->busy_configuring = 1;
1294 spin_unlock_irqrestore(&io_request_lock, flags);
1295
1296 /* invalidate the devices and deregister the disk */
1297 max_p = gdev->max_p;
1298 start = logvol << gdev->minor_shift;
1299 for (i=max_p-1; i>=0; i--) {
1300 int minor = start+i;
1301 /* printk("invalidating( %d %d)\n", ctlr, minor); */
1302 invalidate_device(MKDEV(hba[ctlr]->major, minor), 1);
1303 /* so open will now fail */
1304 h->sizes[minor] = 0;
1305 /* so it will no longer appear in /proc/partitions */
1306 gdev->part[minor].start_sect = 0;
1307 gdev->part[minor].nr_sects = 0;
1308 }
1309 /* check to see if it was the last disk */
1310 if (logvol == h->highest_lun) {
1311 /* if so, find the new hightest lun */
1312 int i, newhighest =-1;
1313 for(i=0; i<h->highest_lun; i++) {
1314 /* if the disk has size > 0, it is available */
1315 if (h->sizes[i << gdev->minor_shift] != 0)
1316 newhighest = i;
1317 }
1318 h->highest_lun = newhighest;
1319
1320 }
1321 --h->num_luns;
1322 gdev->nr_real = h->highest_lun+1;
1323 /* zero out the disk size info */
1324 h->drv[logvol].nr_blocks = 0;
1325 h->drv[logvol].block_size = 0;
1326 h->drv[logvol].cylinders = 0;
1327 h->drv[logvol].LunID = 0;
1328 h->busy_configuring = 0;
1329 return 0;
1330 }
sendcmd_withirq(__u8 cmd,int ctlr,void * buff,size_t size,unsigned int use_unit_num,unsigned int log_unit,__u8 page_code,__u8 cmdtype)1331 static int sendcmd_withirq(__u8 cmd,
1332 int ctlr,
1333 void *buff,
1334 size_t size,
1335 unsigned int use_unit_num,
1336 unsigned int log_unit,
1337 __u8 page_code,
1338 __u8 cmdtype)
1339 {
1340 ctlr_info_t *h = hba[ctlr];
1341 CommandList_struct *c;
1342 u64bit buff_dma_handle;
1343 unsigned long flags;
1344 int return_status = IO_OK;
1345 DECLARE_COMPLETION(wait);
1346
1347 if ((c = cmd_alloc(h , 0)) == NULL)
1348 return -ENOMEM;
1349 c->cmd_type = CMD_IOCTL_PEND;
1350 /* Fill in Command Header */
1351 c->Header.ReplyQueue = 0; /* unused in simple mode */
1352 if (buff != NULL) { /* buffer to fill */
1353 c->Header.SGList = 1;
1354 c->Header.SGTotal= 1;
1355 } else {
1356 /* no buffers to fill */
1357 c->Header.SGList = 0;
1358 c->Header.SGTotal= 0;
1359 }
1360 c->Header.Tag.lower = c->busaddr; /* tag is phys addr of cmd */
1361 /* Fill in Request block */
1362 c->Request.CDB[0] = cmd;
1363 c->Request.Type.Type = cmdtype;
1364 if (cmdtype == TYPE_CMD) {
1365 switch (cmd) {
1366 case CISS_INQUIRY:
1367 /* If the logical unit number is 0 then, this is going
1368 to controller so It's a physical command
1369 mode = 0 target = 0.
1370 So we have nothing to write.
1371 Otherwise
1372 mode = 1 target = LUNID
1373 */
1374 if (use_unit_num != 0) {
1375 c->Header.LUN.LogDev.VolId =
1376 hba[ctlr]->drv[log_unit].LunID;
1377 c->Header.LUN.LogDev.Mode = 1;
1378 }
1379 if (page_code != 0) {
1380 c->Request.CDB[1] = 0x01;
1381 c->Request.CDB[2] = page_code;
1382 }
1383 c->Request.CDBLen = 6;
1384 c->Request.Type.Attribute = ATTR_SIMPLE;
1385 c->Request.Type.Direction = XFER_READ; /* Read */
1386 c->Request.Timeout = 0; /* Don't time out */
1387 c->Request.CDB[4] = size & 0xFF;
1388 break;
1389 case CISS_REPORT_LOG:
1390 /* Talking to controller so It's a physical command
1391 mode = 00 target = 0.
1392 So we have nothing to write.
1393 */
1394 c->Request.CDBLen = 12;
1395 c->Request.Type.Attribute = ATTR_SIMPLE;
1396 c->Request.Type.Direction = XFER_READ; /* Read */
1397 c->Request.Timeout = 0; /* Don't time out */
1398 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
1399 c->Request.CDB[7] = (size >> 16) & 0xFF;
1400 c->Request.CDB[8] = (size >> 8) & 0xFF;
1401 c->Request.CDB[9] = size & 0xFF;
1402 break;
1403 case CCISS_READ_CAPACITY:
1404 c->Header.LUN.LogDev.VolId=
1405 hba[ctlr]->drv[log_unit].LunID;
1406 c->Header.LUN.LogDev.Mode = 1;
1407 c->Request.CDBLen = 10;
1408 c->Request.Type.Attribute = ATTR_SIMPLE;
1409 c->Request.Type.Direction = XFER_READ; /* Read */
1410 c->Request.Timeout = 0; /* Don't time out */
1411 break;
1412 default:
1413 printk(KERN_WARNING
1414 "cciss: Unknown Command 0x%x sent attempted\n", cmd);
1415 cmd_free(h, c, 1);
1416 return IO_ERROR;
1417 }
1418 } else if (cmdtype == TYPE_MSG) {
1419 switch (cmd) {
1420 case 3: /* No-Op message */
1421 c->Request.CDBLen = 1;
1422 c->Request.Type.Attribute = ATTR_SIMPLE;
1423 c->Request.Type.Direction = XFER_WRITE;
1424 c->Request.Timeout = 0;
1425 c->Request.CDB[0] = cmd;
1426 break;
1427 default:
1428 printk(KERN_WARNING
1429 "cciss%d: unknown message type %d\n",
1430 ctlr, cmd);
1431 cmd_free(h, c, 1);
1432 return IO_ERROR;
1433 }
1434 } else {
1435 printk(KERN_WARNING
1436 "cciss%d: unknown command type %d\n", ctlr, cmdtype);
1437 cmd_free(h, c, 1);
1438 return IO_ERROR;
1439 }
1440
1441 /* Fill in the scatter gather information */
1442 if (size > 0) {
1443 buff_dma_handle.val = (__u64) pci_map_single( h->pdev,
1444 buff, size, PCI_DMA_BIDIRECTIONAL);
1445 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1446 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1447 c->SG[0].Len = size;
1448 c->SG[0].Ext = 0; /* we are not chaining */
1449 }
1450
1451 resend_cmd2:
1452 c->waiting = &wait;
1453 /* Put the request on the tail of the queue and send it */
1454 spin_lock_irqsave(&io_request_lock, flags);
1455 addQ(&h->reqQ, c);
1456 h->Qdepth++;
1457 start_io(h);
1458 spin_unlock_irqrestore(&io_request_lock, flags);
1459
1460 wait_for_completion(&wait);
1461
1462
1463 if (c->err_info->CommandStatus != 0) {
1464 /* an error has occurred */
1465 switch (c->err_info->CommandStatus) {
1466 case CMD_TARGET_STATUS:
1467 printk(KERN_WARNING "cciss: cmd %p has "
1468 " completed with errors\n", c);
1469 if (c->err_info->ScsiStatus) {
1470 printk(KERN_WARNING "cciss: cmd %p "
1471 "has SCSI Status = %x\n", c,
1472 c->err_info->ScsiStatus);
1473 }
1474 break;
1475 case CMD_DATA_UNDERRUN:
1476 case CMD_DATA_OVERRUN:
1477 /* expected for inquire and report lun commands */
1478 break;
1479 case CMD_INVALID:
1480 printk(KERN_WARNING "cciss: cmd %p is "
1481 "reported invalid\n", c);
1482 return_status = IO_ERROR;
1483 break;
1484 case CMD_PROTOCOL_ERR:
1485 printk(KERN_WARNING "cciss: cmd %p has "
1486 "protocol error \n", c);
1487 return_status = IO_ERROR;
1488 break;
1489 case CMD_HARDWARE_ERR:
1490 printk(KERN_WARNING "cciss: cmd %p had "
1491 " hardware error\n", c);
1492 return_status = IO_ERROR;
1493 break;
1494 case CMD_CONNECTION_LOST:
1495 printk(KERN_WARNING "cciss: cmd %p had "
1496 "connection lost\n", c);
1497 return_status = IO_ERROR;
1498 break;
1499 case CMD_ABORTED:
1500 printk(KERN_WARNING "cciss: cmd %p was "
1501 "aborted\n", c);
1502 return_status = IO_ERROR;
1503 break;
1504 case CMD_ABORT_FAILED:
1505 printk(KERN_WARNING "cciss: cmd %p reports "
1506 "abort failed\n", c);
1507 return_status = IO_ERROR;
1508 break;
1509 case CMD_UNSOLICITED_ABORT:
1510 printk(KERN_WARNING "cciss: cmd %p aborted "
1511 "do to an unsolicited abort\n", c);
1512 if (c->retry_count < MAX_CMD_RETRIES)
1513 {
1514 printk(KERN_WARNING "retrying cmd\n");
1515 c->retry_count++;
1516 /* erase the old error */
1517 /* information */
1518 memset(c->err_info, 0,
1519 sizeof(ErrorInfo_struct));
1520 return_status = IO_OK;
1521 INIT_COMPLETION(wait);
1522 goto resend_cmd2;
1523
1524 }
1525 return_status = IO_ERROR;
1526 break;
1527 default:
1528 printk(KERN_WARNING "cciss: cmd %p returned "
1529 "unknown status %x\n", c,
1530 c->err_info->CommandStatus);
1531 return_status = IO_ERROR;
1532 }
1533 }
1534
1535 /* unlock the buffers from DMA */
1536 pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1537 size, PCI_DMA_BIDIRECTIONAL);
1538 cmd_free(h, c, 0);
1539 return return_status;
1540 }
register_new_disk(int ctlr,int opened_vol,__u64 requested_lun)1541 static int register_new_disk(int ctlr, int opened_vol, __u64 requested_lun)
1542 {
1543 struct gendisk *gdev = &(hba[ctlr]->gendisk);
1544 ctlr_info_t *h = hba[ctlr];
1545 int start, max_p, i;
1546 int num_luns;
1547 int logvol;
1548 int new_lun_found = 0;
1549 int new_lun_index = 0;
1550 int free_index_found = 0;
1551 int free_index = 0;
1552 ReportLunData_struct *ld_buff;
1553 ReadCapdata_struct *size_buff;
1554 InquiryData_struct *inq_buff;
1555 int return_code;
1556 int listlength = 0;
1557 __u32 lunid = 0;
1558 unsigned int block_size;
1559 unsigned int total_size;
1560 unsigned long flags;
1561 int req_lunid = (int) (requested_lun & (__u64) 0xffffffff);
1562
1563 if (!capable(CAP_SYS_RAWIO))
1564 return -EPERM;
1565 /* if we have no space in our disk array left to add anything */
1566 spin_lock_irqsave(&io_request_lock, flags);
1567 if (h->num_luns >= CISS_MAX_LUN) {
1568 spin_unlock_irqrestore(&io_request_lock, flags);
1569 return -EINVAL;
1570 }
1571 if (h->busy_configuring) {
1572 spin_unlock_irqrestore(&io_request_lock, flags);
1573 return -EBUSY;
1574 }
1575 h->busy_configuring = 1;
1576 spin_unlock_irqrestore(&io_request_lock, flags);
1577
1578 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1579 if (ld_buff == NULL) {
1580 printk(KERN_ERR "cciss: out of memory\n");
1581 h->busy_configuring = 0;
1582 return -ENOMEM;
1583 }
1584 memset(ld_buff, 0, sizeof(ReportLunData_struct));
1585 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1586 if (size_buff == NULL) {
1587 printk(KERN_ERR "cciss: out of memory\n");
1588 kfree(ld_buff);
1589 h->busy_configuring = 0;
1590 return -ENOMEM;
1591 }
1592 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1593 if (inq_buff == NULL) {
1594 printk(KERN_ERR "cciss: out of memory\n");
1595 kfree(ld_buff);
1596 kfree(size_buff);
1597 h->busy_configuring = 0;
1598 return -ENOMEM;
1599 }
1600
1601 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1602 sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);
1603
1604 if (return_code == IO_OK) {
1605 listlength = be32_to_cpu(*((__u32 *) &ld_buff->LUNListLength[0]));
1606 } else {
1607 /* reading number of logical volumes failed */
1608 printk(KERN_WARNING "cciss: report logical volume"
1609 " command failed\n");
1610 listlength = 0;
1611 h->busy_configuring = 0;
1612 return -1;
1613 }
1614 num_luns = listlength / 8; /* 8 bytes pre entry */
1615 if (num_luns > CISS_MAX_LUN)
1616 num_luns = CISS_MAX_LUN;
1617
1618 #ifdef CCISS_DEBUG
1619 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
1620 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
1621 ld_buff->LUNListLength[3], num_luns);
1622 #endif
1623 for(i=0; i< num_luns; i++) {
1624 int j;
1625 int lunID_found = 0;
1626
1627 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
1628 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
1629 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
1630 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1631
1632 /* check to see if this is a new lun */
1633 for(j=0; j <= h->highest_lun; j++) {
1634 #ifdef CCISS_DEBUG
1635 printk("Checking %d %x against %x\n", j,h->drv[j].LunID,
1636 lunid);
1637 #endif /* CCISS_DEBUG */
1638 if (h->drv[j].LunID == lunid) {
1639 lunID_found = 1;
1640 break;
1641 }
1642
1643 }
1644 if (lunID_found == 1)
1645 continue;
1646 else { /* new lun found */
1647
1648 #ifdef CCISS_DEBUG
1649 printk("new lun found at %d\n", i);
1650 #endif /* CCISS_DEBUG */
1651 if (req_lunid) /* we are looking for a specific lun */
1652 {
1653 if (lunid != req_lunid)
1654 {
1655 #ifdef CCISS_DEBUG
1656 printk("new lun %x is not %x\n",
1657 lunid, req_lunid);
1658 #endif /* CCISS_DEBUG */
1659 continue;
1660 }
1661 }
1662 new_lun_index = i;
1663 new_lun_found = 1;
1664 break;
1665 }
1666 }
1667 if (!new_lun_found) {
1668 printk(KERN_DEBUG "cciss: New Logical Volume not found\n");
1669 h->busy_configuring = 0;
1670 return -1;
1671 }
1672 /* Now find the free index */
1673 for(i=0; i <CISS_MAX_LUN; i++) {
1674 #ifdef CCISS_DEBUG
1675 printk("Checking Index %d\n", i);
1676 #endif /* CCISS_DEBUG */
1677 if (hba[ctlr]->drv[i].LunID == 0) {
1678 #ifdef CCISS_DEBUG
1679 printk("free index found at %d\n", i);
1680 #endif /* CCISS_DEBUG */
1681 free_index_found = 1;
1682 free_index = i;
1683 break;
1684 }
1685 }
1686 if (!free_index_found) {
1687 printk(KERN_WARNING "cciss: unable to find free slot for disk\n");
1688 h->busy_configuring = 0;
1689 return -1;
1690 }
1691
1692 logvol = free_index;
1693 hba[ctlr]->drv[logvol].LunID = lunid;
1694 /* there could be gaps in lun numbers, track hightest */
1695 if (hba[ctlr]->highest_lun < logvol)
1696 hba[ctlr]->highest_lun = logvol;
1697
1698 memset(size_buff, 0, sizeof(ReadCapdata_struct));
1699 return_code = sendcmd_withirq(CCISS_READ_CAPACITY, ctlr,
1700 size_buff, sizeof(ReadCapdata_struct), 1,
1701 logvol, 0, TYPE_CMD);
1702 if (return_code == IO_OK) {
1703 total_size = (0xff &
1704 (unsigned int) size_buff->total_size[0]) << 24;
1705 total_size |= (0xff &
1706 (unsigned int) size_buff->total_size[1]) << 16;
1707 total_size |= (0xff &
1708 (unsigned int) size_buff->total_size[2]) << 8;
1709 total_size |= (0xff &
1710 (unsigned int) size_buff->total_size[3]);
1711 total_size++; /* command returns highest block address */
1712
1713 block_size = (0xff &
1714 (unsigned int) size_buff->block_size[0]) << 24;
1715 block_size |= (0xff &
1716 (unsigned int) size_buff->block_size[1]) << 16;
1717 block_size |= (0xff &
1718 (unsigned int) size_buff->block_size[2]) << 8;
1719 block_size |= (0xff &
1720 (unsigned int) size_buff->block_size[3]);
1721 } else {
1722 /* read capacity command failed */
1723 printk(KERN_WARNING "cciss: read capacity failed\n");
1724 total_size = 0;
1725 block_size = BLOCK_SIZE;
1726 }
1727 printk(KERN_INFO " blocks= %d block_size= %d\n",
1728 total_size, block_size);
1729 /* Execute the command to read the disk geometry */
1730 memset(inq_buff, 0, sizeof(InquiryData_struct));
1731 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buff,
1732 sizeof(InquiryData_struct), 1, logvol ,0xC1, TYPE_CMD);
1733 if (return_code == IO_OK) {
1734 if (inq_buff->data_byte[8] == 0xFF) {
1735 printk(KERN_WARNING
1736 "cciss: reading geometry failed, "
1737 "volume does not support reading geometry\n");
1738
1739 hba[ctlr]->drv[logvol].block_size = block_size;
1740 hba[ctlr]->drv[logvol].nr_blocks = total_size;
1741 hba[ctlr]->drv[logvol].heads = 255;
1742 hba[ctlr]->drv[logvol].sectors = 32; /* secs/trk */
1743 hba[ctlr]->drv[logvol].cylinders = total_size / 255 /32;
1744 hba[ctlr]->drv[logvol].raid_level = RAID_UNKNOWN;
1745 } else {
1746 hba[ctlr]->drv[logvol].block_size = block_size;
1747 hba[ctlr]->drv[logvol].nr_blocks = total_size;
1748 hba[ctlr]->drv[logvol].heads = inq_buff->data_byte[6];
1749 hba[ctlr]->drv[logvol].sectors = inq_buff->data_byte[7];
1750 hba[ctlr]->drv[logvol].cylinders =
1751 (inq_buff->data_byte[4] & 0xff) << 8;
1752 hba[ctlr]->drv[logvol].cylinders +=
1753 inq_buff->data_byte[5];
1754 hba[ctlr]->drv[logvol].raid_level =
1755 inq_buff->data_byte[8];
1756 }
1757 } else {
1758 /* Get geometry failed */
1759 printk(KERN_WARNING "cciss: reading geometry failed, "
1760 "continuing with default geometry\n");
1761
1762 hba[ctlr]->drv[logvol].block_size = block_size;
1763 hba[ctlr]->drv[logvol].nr_blocks = total_size;
1764 hba[ctlr]->drv[logvol].heads = 255;
1765 hba[ctlr]->drv[logvol].sectors = 32; /* Sectors per track */
1766 hba[ctlr]->drv[logvol].cylinders = total_size / 255 / 32;
1767 }
1768 if (hba[ctlr]->drv[logvol].raid_level > 5)
1769 hba[ctlr]->drv[logvol].raid_level = RAID_UNKNOWN;
1770 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d RAID %s\n\n",
1771 hba[ctlr]->drv[logvol].heads,
1772 hba[ctlr]->drv[logvol].sectors,
1773 hba[ctlr]->drv[logvol].cylinders,
1774 raid_label[hba[ctlr]->drv[logvol].raid_level]);
1775
1776 /* special case for c?d0, which may be opened even when
1777 it does not "exist". In that case, don't mess with usage count.
1778 Also, /dev/c1d1 could be used to re-add c0d0 so we can't just
1779 check whether logvol == 0, must check logvol != opened_vol */
1780 if (logvol != opened_vol)
1781 hba[ctlr]->drv[logvol].usage_count = 0;
1782
1783 max_p = gdev->max_p;
1784 start = logvol<< gdev->minor_shift;
1785 hba[ctlr]->hd[start].nr_sects = total_size;
1786 hba[ctlr]->sizes[start] = total_size;
1787
1788 for(i=max_p-1; i>=0; i--) {
1789 int minor = start+i;
1790 invalidate_device(MKDEV(hba[ctlr]->major, minor), 1);
1791 gdev->part[minor].start_sect = 0;
1792 gdev->part[minor].nr_sects = 0;
1793
1794 /* reset the blocksize so we can read the partition table */
1795 blksize_size[hba[ctlr]->major][minor] = block_size;
1796 hba[ctlr]->hardsizes[minor] = block_size;
1797 }
1798
1799 ++hba[ctlr]->num_luns;
1800 gdev->nr_real = hba[ctlr]->highest_lun + 1;
1801 /* setup partitions per disk */
1802 grok_partitions(gdev, logvol, MAX_PART,
1803 hba[ctlr]->drv[logvol].nr_blocks);
1804 kfree(ld_buff);
1805 kfree(size_buff);
1806 kfree(inq_buff);
1807 h->busy_configuring = 0;
1808 return logvol;
1809 }
1810
cciss_rescan_disk(int ctlr,int logvol)1811 static int cciss_rescan_disk(int ctlr, int logvol)
1812 {
1813 struct gendisk *gdev = &(hba[ctlr]->gendisk);
1814 int start, max_p, i;
1815 ReadCapdata_struct *size_buff;
1816 InquiryData_struct *inq_buff;
1817 int return_code;
1818 unsigned int block_size;
1819 unsigned int total_size;
1820
1821 if (!capable(CAP_SYS_RAWIO))
1822 return -EPERM;
1823 if (hba[ctlr]->sizes[logvol << NWD_SHIFT] != 0) {
1824 /* disk is possible on line, return just a warning */
1825 return 1;
1826 }
1827 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1828 if (size_buff == NULL) {
1829 printk(KERN_ERR "cciss: out of memory\n");
1830 return -1;
1831 }
1832 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1833 if (inq_buff == NULL) {
1834 printk(KERN_ERR "cciss: out of memory\n");
1835 kfree(size_buff);
1836 return -1;
1837 }
1838 memset(size_buff, 0, sizeof(ReadCapdata_struct));
1839 return_code = sendcmd_withirq(CCISS_READ_CAPACITY, ctlr, size_buff,
1840 sizeof( ReadCapdata_struct), 1, logvol, 0,
1841 TYPE_CMD);
1842 if (return_code == IO_OK) {
1843 total_size = (0xff &
1844 (unsigned int)(size_buff->total_size[0])) << 24;
1845 total_size |= (0xff &
1846 (unsigned int)(size_buff->total_size[1])) << 16;
1847 total_size |= (0xff &
1848 (unsigned int)(size_buff->total_size[2])) << 8;
1849 total_size |= (0xff & (unsigned int)
1850 (size_buff->total_size[3]));
1851 total_size++; /* command returns highest block address */
1852
1853 block_size = (0xff &
1854 (unsigned int)(size_buff->block_size[0])) << 24;
1855 block_size |= (0xff &
1856 (unsigned int)(size_buff->block_size[1])) << 16;
1857 block_size |= (0xff &
1858 (unsigned int)(size_buff->block_size[2])) << 8;
1859 block_size |= (0xff &
1860 (unsigned int)(size_buff->block_size[3]));
1861 } else { /* read capacity command failed */
1862 printk(KERN_WARNING "cciss: read capacity failed\n");
1863 total_size = block_size = 0;
1864 }
1865 printk(KERN_INFO " blocks= %d block_size= %d\n",
1866 total_size, block_size);
1867 /* Execute the command to read the disk geometry */
1868 memset(inq_buff, 0, sizeof(InquiryData_struct));
1869 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buff,
1870 sizeof(InquiryData_struct), 1, logvol ,0xC1, TYPE_CMD);
1871 if (return_code == IO_OK) {
1872 if (inq_buff->data_byte[8] == 0xFF) {
1873 printk(KERN_WARNING "cciss: reading geometry failed, "
1874 "volume does not support reading geometry\n");
1875
1876 hba[ctlr]->drv[logvol].nr_blocks = total_size;
1877 hba[ctlr]->drv[logvol].heads = 255;
1878 hba[ctlr]->drv[logvol].sectors = 32; /* Sectors/track */
1879 hba[ctlr]->drv[logvol].cylinders = total_size / 255 /32;
1880 } else {
1881 hba[ctlr]->drv[logvol].nr_blocks = total_size;
1882 hba[ctlr]->drv[logvol].heads = inq_buff->data_byte[6];
1883 hba[ctlr]->drv[logvol].sectors = inq_buff->data_byte[7];
1884 hba[ctlr]->drv[logvol].cylinders =
1885 (inq_buff->data_byte[4] & 0xff) << 8;
1886 hba[ctlr]->drv[logvol].cylinders +=
1887 inq_buff->data_byte[5];
1888 }
1889 } else { /* Get geometry failed */
1890 printk(KERN_WARNING "cciss: reading geometry failed, "
1891 "continuing with default geometry\n");
1892
1893 hba[ctlr]->drv[logvol].nr_blocks = total_size;
1894 hba[ctlr]->drv[logvol].heads = 255;
1895 hba[ctlr]->drv[logvol].sectors = 32; /* Sectors / track */
1896 hba[ctlr]->drv[logvol].cylinders = total_size / 255 /32;
1897 }
1898
1899 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d \n\n",
1900 hba[ctlr]->drv[logvol].heads,
1901 hba[ctlr]->drv[logvol].sectors,
1902 hba[ctlr]->drv[logvol].cylinders);
1903 max_p = gdev->max_p;
1904 start = logvol<< gdev->minor_shift;
1905 hba[ctlr]->hd[start].nr_sects = hba[ctlr]->sizes[start]= total_size;
1906
1907 for (i=max_p-1; i>=0; i--) {
1908 int minor = start+i;
1909 invalidate_device(MKDEV(hba[ctlr]->major, minor), 1);
1910 gdev->part[minor].start_sect = 0;
1911 gdev->part[minor].nr_sects = 0;
1912
1913 /* reset the blocksize so we can read the partition table */
1914 blksize_size[hba[ctlr]->major][minor] = block_size;
1915 hba[ctlr]->hardsizes[minor] = block_size;
1916 }
1917
1918 /* setup partitions per disk */
1919 grok_partitions(gdev, logvol, MAX_PART,
1920 hba[ctlr]->drv[logvol].nr_blocks );
1921
1922 kfree(size_buff);
1923 kfree(inq_buff);
1924 return 0;
1925 }
1926 /*
1927 * Wait polling for a command to complete.
1928 * The memory mapped FIFO is polled for the completion.
1929 * Used only at init time, interrupts disabled.
1930 */
pollcomplete(int ctlr)1931 static unsigned long pollcomplete(int ctlr)
1932 {
1933 unsigned long done;
1934 int i;
1935
1936 /* Wait (up to 20 seconds) for a command to complete */
1937
1938 for (i = 20 * HZ; i > 0; i--) {
1939 done = hba[ctlr]->access.command_completed(hba[ctlr]);
1940 if (done == FIFO_EMPTY) {
1941 set_current_state(TASK_UNINTERRUPTIBLE);
1942 schedule_timeout(1);
1943 } else
1944 return done;
1945 }
1946 /* Invalid address to tell caller we ran out of time */
1947 return 1;
1948 }
1949 /*
1950 * Send a command to the controller, and wait for it to complete.
1951 * Only used at init time.
1952 */
sendcmd(__u8 cmd,int ctlr,void * buff,size_t size,unsigned int use_unit_num,unsigned int log_unit,__u8 page_code,unsigned char * scsi3addr)1953 static int sendcmd(
1954 __u8 cmd,
1955 int ctlr,
1956 void *buff,
1957 size_t size,
1958 unsigned int use_unit_num, /* 0: address the controller,
1959 1: address logical volume log_unit,
1960 2: periph device address is scsi3addr */
1961 unsigned int log_unit,
1962 __u8 page_code,
1963 unsigned char *scsi3addr)
1964 {
1965 CommandList_struct *c;
1966 int i;
1967 unsigned long complete;
1968 ctlr_info_t *info_p= hba[ctlr];
1969 u64bit buff_dma_handle;
1970 int status = IO_OK;
1971
1972 c = cmd_alloc(info_p, 1);
1973 if (c == NULL) {
1974 printk(KERN_WARNING "cciss: unable to get memory");
1975 return IO_ERROR;
1976 }
1977 /* Fill in Command Header */
1978 c->Header.ReplyQueue = 0; /* unused in simple mode */
1979 if (buff != NULL) { /* buffer to fill */
1980 c->Header.SGList = 1;
1981 c->Header.SGTotal= 1;
1982 } else { /* no buffers to fill */
1983 c->Header.SGList = 0;
1984 c->Header.SGTotal= 0;
1985 }
1986 c->Header.Tag.lower = c->busaddr; /* use the kernel address */
1987 /* the cmd block for tag */
1988 /* Fill in Request block */
1989 switch (cmd) {
1990 case CISS_INQUIRY:
1991 /* If the logical unit number is 0 then, this is going
1992 to controller so It's a physical command
1993 mode = 0 target = 0.
1994 So we have nothing to write.
1995 otherwise, if use_unit_num == 1,
1996 mode = 1(volume set addressing) target = LUNID
1997 otherwise, if use_unit_num == 2,
1998 mode = 0(periph dev addr) target = scsi3addr
1999 */
2000 if (use_unit_num == 1) {
2001 c->Header.LUN.LogDev.VolId=
2002 hba[ctlr]->drv[log_unit].LunID;
2003 c->Header.LUN.LogDev.Mode = 1;
2004 }
2005 else if (use_unit_num == 2) {
2006 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
2007 c->Header.LUN.LogDev.Mode = 0;
2008 /* phys dev addr */
2009 }
2010
2011 /* are we trying to read a vital product page */
2012 if (page_code != 0) {
2013 c->Request.CDB[1] = 0x01;
2014 c->Request.CDB[2] = page_code;
2015 }
2016 c->Request.CDBLen = 6;
2017 c->Request.Type.Type = TYPE_CMD; /* It is a command. */
2018 c->Request.Type.Attribute = ATTR_SIMPLE;
2019 c->Request.Type.Direction = XFER_READ; /* Read */
2020 c->Request.Timeout = 0; /* Don't time out */
2021 c->Request.CDB[0] = CISS_INQUIRY;
2022 c->Request.CDB[4] = size & 0xFF;
2023 break;
2024 case CISS_REPORT_LOG:
2025 case CISS_REPORT_PHYS:
2026 /* Talking to controller so It's a physical command
2027 mode = 00 target = 0.
2028 So we have nothing to write.
2029 */
2030 c->Request.CDBLen = 12;
2031 c->Request.Type.Type = TYPE_CMD; /* It is a command. */
2032 c->Request.Type.Attribute = ATTR_SIMPLE;
2033 c->Request.Type.Direction = XFER_READ; /* Read */
2034 c->Request.Timeout = 0; /* Don't time out */
2035 c->Request.CDB[0] = cmd;
2036 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
2037 c->Request.CDB[7] = (size >> 16) & 0xFF;
2038 c->Request.CDB[8] = (size >> 8) & 0xFF;
2039 c->Request.CDB[9] = size & 0xFF;
2040 break;
2041
2042 case CCISS_READ_CAPACITY:
2043 c->Header.LUN.LogDev.VolId=
2044 hba[ctlr]->drv[log_unit].LunID;
2045 c->Header.LUN.LogDev.Mode = 1;
2046 c->Request.CDBLen = 10;
2047 c->Request.Type.Type = TYPE_CMD; /* It is a command. */
2048 c->Request.Type.Attribute = ATTR_SIMPLE;
2049 c->Request.Type.Direction = XFER_READ; /* Read */
2050 c->Request.Timeout = 0; /* Don't time out */
2051 c->Request.CDB[0] = CCISS_READ_CAPACITY;
2052 break;
2053 case CCISS_CACHE_FLUSH:
2054 c->Request.CDBLen = 12;
2055 c->Request.Type.Type = TYPE_CMD; /* It is a command. */
2056 c->Request.Type.Attribute = ATTR_SIMPLE;
2057 c->Request.Type.Direction = XFER_WRITE; /* No data */
2058 c->Request.Timeout = 0; /* Don't time out */
2059 c->Request.CDB[0] = BMIC_WRITE; /* BMIC Passthru */
2060 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
2061 break;
2062 default:
2063 printk(KERN_WARNING
2064 "cciss: Unknown Command 0x%x sent attempted\n",
2065 cmd);
2066 cmd_free(info_p, c, 1);
2067 return IO_ERROR;
2068 };
2069 /* Fill in the scatter gather information */
2070 if (size > 0) {
2071 buff_dma_handle.val = (__u64) pci_map_single( info_p->pdev,
2072 buff, size, PCI_DMA_BIDIRECTIONAL);
2073 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
2074 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
2075 c->SG[0].Len = size;
2076 c->SG[0].Ext = 0; /* we are not chaining */
2077 }
2078 resend_cmd1:
2079 /*
2080 * Disable interrupt
2081 */
2082 #ifdef CCISS_DEBUG
2083 printk(KERN_DEBUG "cciss: turning intr off\n");
2084 #endif /* CCISS_DEBUG */
2085 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
2086
2087 /* Make sure there is room in the command FIFO */
2088 /* Actually it should be completely empty at this time. */
2089 for (i = 200000; i > 0; i--) {
2090 /* if fifo isn't full go */
2091 if (!(info_p->access.fifo_full(info_p))) {
2092
2093 break;
2094 }
2095 udelay(10);
2096 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
2097 " waiting!\n", ctlr);
2098 }
2099 /*
2100 * Send the cmd
2101 */
2102 info_p->access.submit_command(info_p, c);
2103 complete = pollcomplete(ctlr);
2104
2105 #ifdef CCISS_DEBUG
2106 printk(KERN_DEBUG "cciss: command completed\n");
2107 #endif /* CCISS_DEBUG */
2108
2109 if (complete != 1) {
2110 if ( (complete & CISS_ERROR_BIT)
2111 && (complete & ~CISS_ERROR_BIT) == c->busaddr) {
2112 /* if data overrun or underun on Report command
2113 ignore it
2114 */
2115 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
2116 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
2117 (c->Request.CDB[0] == CISS_INQUIRY)) &&
2118 ((c->err_info->CommandStatus ==
2119 CMD_DATA_OVERRUN) ||
2120 (c->err_info->CommandStatus ==
2121 CMD_DATA_UNDERRUN)
2122 )) {
2123 complete = c->busaddr;
2124 } else {
2125 if (c->err_info->CommandStatus ==
2126 CMD_UNSOLICITED_ABORT) {
2127 printk(KERN_WARNING "cciss: "
2128 "cmd %p aborted do "
2129 "to an unsolicited abort \n", c);
2130 if (c->retry_count < MAX_CMD_RETRIES) {
2131 printk(KERN_WARNING
2132 "retrying cmd\n");
2133 c->retry_count++;
2134 /* erase the old error */
2135 /* information */
2136 memset(c->err_info, 0,
2137 sizeof(ErrorInfo_struct));
2138 goto resend_cmd1;
2139 } else {
2140 printk(KERN_WARNING
2141 "retried to many times\n");
2142 status = IO_ERROR;
2143 goto cleanup1;
2144 }
2145 }
2146 printk(KERN_WARNING "cciss cciss%d: sendcmd"
2147 " Error %x \n", ctlr,
2148 c->err_info->CommandStatus);
2149 printk(KERN_WARNING "cciss cciss%d: sendcmd"
2150 " offensive info\n"
2151 " size %x\n num %x value %x\n", ctlr,
2152 c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
2153 c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
2154 c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
2155 status = IO_ERROR;
2156 goto cleanup1;
2157 }
2158 }
2159 if (complete != c->busaddr) {
2160 printk( KERN_WARNING "cciss cciss%d: SendCmd "
2161 "Invalid command list address returned! (%lx)\n",
2162 ctlr, complete);
2163 status = IO_ERROR;
2164 goto cleanup1;
2165 }
2166 } else {
2167 printk( KERN_WARNING
2168 "cciss cciss%d: SendCmd Timeout out, "
2169 "No command list address returned!\n",
2170 ctlr);
2171 status = IO_ERROR;
2172 }
2173
2174 cleanup1:
2175 /* unlock the data buffer from DMA */
2176 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
2177 size, PCI_DMA_BIDIRECTIONAL);
2178 cmd_free(info_p, c, 1);
2179 return status;
2180 }
2181 /*
2182 * Map (physical) PCI mem into (virtual) kernel space
2183 */
remap_pci_mem(ulong base,ulong size)2184 static ulong remap_pci_mem(ulong base, ulong size)
2185 {
2186 ulong page_base = ((ulong) base) & PAGE_MASK;
2187 ulong page_offs = ((ulong) base) - page_base;
2188 ulong page_remapped = (ulong) ioremap(page_base, page_offs+size);
2189
2190 return (ulong) (page_remapped ? (page_remapped + page_offs) : 0UL);
2191 }
2192
2193 /*
2194 * Takes jobs of the Q and sends them to the hardware, then puts it on
2195 * the Q to wait for completion.
2196 */
start_io(ctlr_info_t * h)2197 static void start_io( ctlr_info_t *h)
2198 {
2199 CommandList_struct *c;
2200
2201 while(( c = h->reqQ) != NULL ) {
2202 /* can't do anything if fifo is full */
2203 if ((h->access.fifo_full(h))) {
2204 printk(KERN_WARNING "cciss: fifo full \n");
2205 return;
2206 }
2207 /* Get the frist entry from the Request Q */
2208 removeQ(&(h->reqQ), c);
2209 h->Qdepth--;
2210
2211 /* Tell the controller execute command */
2212 h->access.submit_command(h, c);
2213
2214 /* Put job onto the completed Q */
2215 addQ (&(h->cmpQ), c);
2216 }
2217 }
2218
complete_buffers(struct buffer_head * bh,int status)2219 static inline void complete_buffers( struct buffer_head *bh, int status)
2220 {
2221 struct buffer_head *xbh;
2222
2223 while(bh) {
2224 xbh = bh->b_reqnext;
2225 bh->b_reqnext = NULL;
2226 blk_finished_io(bh->b_size >> 9);
2227 bh->b_end_io(bh, status);
2228 bh = xbh;
2229 }
2230 }
2231 /* This code assumes io_request_lock is already held */
2232 /* Zeros out the error record and then resends the command back */
2233 /* to the controller */
resend_cciss_cmd(ctlr_info_t * h,CommandList_struct * c)2234 static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
2235 {
2236 /* erase the old error information */
2237 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
2238
2239 /* add it to software queue and then send it to the controller */
2240 addQ(&(h->reqQ),c);
2241 h->Qdepth++;
2242 if (h->Qdepth > h->maxQsinceinit)
2243 h->maxQsinceinit = h->Qdepth;
2244
2245 start_io(h);
2246 }
2247 /* checks the status of the job and calls complete buffers to mark all
2248 * buffers for the completed job.
2249 */
complete_command(ctlr_info_t * h,CommandList_struct * cmd,int timeout)2250 static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
2251 int timeout)
2252 {
2253 int status = 1;
2254 int retry_cmd = 0;
2255 int i, ddir;
2256 u64bit temp64;
2257
2258 if (timeout)
2259 status = 0;
2260
2261 if (cmd->err_info->CommandStatus != 0) {
2262 /* an error has occurred */
2263 switch (cmd->err_info->CommandStatus) {
2264 unsigned char sense_key;
2265 case CMD_TARGET_STATUS:
2266 status = 0;
2267
2268 if (cmd->err_info->ScsiStatus == 0x02) {
2269 printk(KERN_WARNING "cciss: cmd %p "
2270 "has CHECK CONDITION,"
2271 " sense key = 0x%x\n", cmd,
2272 cmd->err_info->SenseInfo[2]);
2273 /* check the sense key */
2274 sense_key = 0xf &
2275 cmd->err_info->SenseInfo[2];
2276 /* recovered error */
2277 if ( sense_key == 0x1)
2278 status = 1;
2279 } else {
2280 printk(KERN_WARNING "cciss: cmd %p "
2281 "has SCSI Status 0x%x\n",
2282 cmd, cmd->err_info->ScsiStatus);
2283 }
2284 break;
2285 case CMD_DATA_UNDERRUN:
2286 printk(KERN_WARNING "cciss: cmd %p has"
2287 " completed with data underrun "
2288 "reported\n", cmd);
2289 break;
2290 case CMD_DATA_OVERRUN:
2291 printk(KERN_WARNING "cciss: cmd %p has"
2292 " completed with data overrun "
2293 "reported\n", cmd);
2294 break;
2295 case CMD_INVALID:
2296 printk(KERN_WARNING "cciss: cmd %p is "
2297 "reported invalid\n", cmd);
2298 status = 0;
2299 break;
2300 case CMD_PROTOCOL_ERR:
2301 printk(KERN_WARNING "cciss: cmd %p has "
2302 "protocol error \n", cmd);
2303 status = 0;
2304 break;
2305 case CMD_HARDWARE_ERR:
2306 printk(KERN_WARNING "cciss: cmd %p had "
2307 " hardware error\n", cmd);
2308 status = 0;
2309 break;
2310 case CMD_CONNECTION_LOST:
2311 printk(KERN_WARNING "cciss: cmd %p had "
2312 "connection lost\n", cmd);
2313 status=0;
2314 break;
2315 case CMD_ABORTED:
2316 printk(KERN_WARNING "cciss: cmd %p was "
2317 "aborted\n", cmd);
2318 status=0;
2319 break;
2320 case CMD_ABORT_FAILED:
2321 printk(KERN_WARNING "cciss: cmd %p reports "
2322 "abort failed\n", cmd);
2323 status=0;
2324 break;
2325 case CMD_UNSOLICITED_ABORT:
2326 printk(KERN_WARNING "cciss: cmd %p aborted do "
2327 "to an unsolicited abort \n",
2328 cmd);
2329 if (cmd->retry_count < MAX_CMD_RETRIES) {
2330 retry_cmd=1;
2331 printk(KERN_WARNING
2332 "retrying cmd\n");
2333 cmd->retry_count++;
2334 } else {
2335 printk(KERN_WARNING
2336 "retried to many times\n");
2337 }
2338 status=0;
2339 break;
2340 case CMD_TIMEOUT:
2341 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2342 cmd);
2343 status=0;
2344 break;
2345 default:
2346 printk(KERN_WARNING "cciss: cmd %p returned "
2347 "unknown status %x\n", cmd,
2348 cmd->err_info->CommandStatus);
2349 status=0;
2350 }
2351 }
2352 /* We need to return this command */
2353 if (retry_cmd) {
2354 resend_cciss_cmd(h,cmd);
2355 return;
2356 }
2357 /* command did not need to be retried */
2358 /* unmap the DMA mapping for all the scatter gather elements */
2359 if (cmd->Request.Type.Direction == XFER_READ)
2360 ddir = PCI_DMA_FROMDEVICE;
2361 else
2362 ddir = PCI_DMA_TODEVICE;
2363 for(i=0; i<cmd->Header.SGList; i++) {
2364 temp64.val32.lower = cmd->SG[i].Addr.lower;
2365 temp64.val32.upper = cmd->SG[i].Addr.upper;
2366 pci_unmap_page(hba[cmd->ctlr]->pdev,
2367 temp64.val, cmd->SG[i].Len, ddir);
2368 }
2369 complete_buffers(cmd->rq->bh, status);
2370 #ifdef CCISS_DEBUG
2371 printk("Done with %p\n", cmd->rq);
2372 #endif /* CCISS_DEBUG */
2373 end_that_request_last(cmd->rq);
2374 cmd_free(h,cmd,1);
2375 }
2376
2377
cpq_new_segment(request_queue_t * q,struct request * rq,int max_segments)2378 static inline int cpq_new_segment(request_queue_t *q, struct request *rq,
2379 int max_segments)
2380 {
2381 if (rq->nr_segments < MAXSGENTRIES) {
2382 rq->nr_segments++;
2383 return 1;
2384 }
2385 return 0;
2386 }
2387
cpq_back_merge_fn(request_queue_t * q,struct request * rq,struct buffer_head * bh,int max_segments)2388 static int cpq_back_merge_fn(request_queue_t *q, struct request *rq,
2389 struct buffer_head *bh, int max_segments)
2390 {
2391 if (blk_seg_merge_ok(rq->bhtail, bh))
2392 return 1;
2393 return cpq_new_segment(q, rq, max_segments);
2394 }
2395
cpq_front_merge_fn(request_queue_t * q,struct request * rq,struct buffer_head * bh,int max_segments)2396 static int cpq_front_merge_fn(request_queue_t *q, struct request *rq,
2397 struct buffer_head *bh, int max_segments)
2398 {
2399 if (blk_seg_merge_ok(bh, rq->bh))
2400 return 1;
2401 return cpq_new_segment(q, rq, max_segments);
2402 }
2403
cpq_merge_requests_fn(request_queue_t * q,struct request * rq,struct request * nxt,int max_segments)2404 static int cpq_merge_requests_fn(request_queue_t *q, struct request *rq,
2405 struct request *nxt, int max_segments)
2406 {
2407 int total_segments = rq->nr_segments + nxt->nr_segments;
2408
2409 if (blk_seg_merge_ok(rq->bhtail, nxt->bh))
2410 total_segments--;
2411
2412 if (total_segments > MAXSGENTRIES)
2413 return 0;
2414
2415 rq->nr_segments = total_segments;
2416 return 1;
2417 }
2418
2419 /*
2420 * Get a request and submit it to the controller.
2421 * Currently we do one request at a time. Ideally we would like to send
2422 * everything to the controller on the first call, but there is a danger
2423 * of holding the io_request_lock for to long.
2424 */
do_cciss_request(request_queue_t * q)2425 static void do_cciss_request(request_queue_t *q)
2426 {
2427 ctlr_info_t *h= q->queuedata;
2428 CommandList_struct *c;
2429 int log_unit, start_blk, seg;
2430 unsigned long long lastdataend;
2431 struct buffer_head *bh;
2432 struct list_head *queue_head = &q->queue_head;
2433 struct request *creq;
2434 u64bit temp64;
2435 struct scatterlist tmp_sg[MAXSGENTRIES];
2436 int i, ddir;
2437
2438 if (q->plugged)
2439 goto startio;
2440
2441 next:
2442 if (list_empty(queue_head))
2443 goto startio;
2444
2445 creq = blkdev_entry_next_request(queue_head);
2446 if (creq->nr_segments > MAXSGENTRIES)
2447 BUG();
2448
2449 if( h->ctlr != map_major_to_ctlr[MAJOR(creq->rq_dev)] ) {
2450 printk(KERN_WARNING "doreq cmd for %d, %x at %p\n",
2451 h->ctlr, creq->rq_dev, creq);
2452 blkdev_dequeue_request(creq);
2453 complete_buffers(creq->bh, 0);
2454 end_that_request_last(creq);
2455 goto startio;
2456 }
2457
2458 /* make sure controller is alive. */
2459 if (!CTLR_IS_ALIVE(h)) {
2460 printk(KERN_WARNING "cciss%d: I/O quit ", h->ctlr);
2461 blkdev_dequeue_request(creq);
2462 complete_buffers(creq->bh, 0);
2463 end_that_request_last(creq);
2464 return;
2465 }
2466
2467 if (( c = cmd_alloc(h, 1)) == NULL)
2468 goto startio;
2469
2470 blkdev_dequeue_request(creq);
2471
2472 spin_unlock_irq(&io_request_lock);
2473
2474 c->cmd_type = CMD_RWREQ;
2475 c->rq = creq;
2476 bh = creq->bh;
2477
2478 /* fill in the request */
2479 log_unit = MINOR(creq->rq_dev) >> NWD_SHIFT;
2480 c->Header.ReplyQueue = 0; /* unused in simple mode */
2481 c->Header.Tag.lower = c->busaddr; /* use the physical address */
2482 /* the cmd block for tag */
2483 c->Header.LUN.LogDev.VolId= hba[h->ctlr]->drv[log_unit].LunID;
2484 c->Header.LUN.LogDev.Mode = 1;
2485 c->Request.CDBLen = 10; /* 12 byte commands not in FW yet. */
2486 c->Request.Type.Type = TYPE_CMD; /* It is a command. */
2487 c->Request.Type.Attribute = ATTR_SIMPLE;
2488 c->Request.Type.Direction =
2489 (creq->cmd == READ) ? XFER_READ: XFER_WRITE;
2490 c->Request.Timeout = 0; /* Don't time out */
2491 c->Request.CDB[0] = (creq->cmd == READ) ? CCISS_READ : CCISS_WRITE;
2492 start_blk = hba[h->ctlr]->hd[MINOR(creq->rq_dev)].start_sect + creq->sector;
2493 #ifdef CCISS_DEBUG
2494 if (bh == NULL)
2495 panic("cciss: bh== NULL?");
2496 printk(KERN_DEBUG "cciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2497 (int) creq->nr_sectors);
2498 #endif /* CCISS_DEBUG */
2499 seg = 0;
2500 lastdataend = ~0ULL;
2501 while(bh) {
2502 if (bh_phys(bh) == lastdataend)
2503 { /* tack it on to the last segment */
2504 tmp_sg[seg-1].length +=bh->b_size;
2505 lastdataend += bh->b_size;
2506 } else {
2507 if (seg == MAXSGENTRIES)
2508 BUG();
2509 tmp_sg[seg].page = bh->b_page;
2510 tmp_sg[seg].length = bh->b_size;
2511 tmp_sg[seg].offset = bh_offset(bh);
2512 lastdataend = bh_phys(bh) + bh->b_size;
2513 seg++;
2514 }
2515 bh = bh->b_reqnext;
2516 }
2517
2518 /* get the DMA records for the setup */
2519 if (c->Request.Type.Direction == XFER_READ)
2520 ddir = PCI_DMA_FROMDEVICE;
2521 else
2522 ddir = PCI_DMA_TODEVICE;
2523 for (i=0; i<seg; i++) {
2524 c->SG[i].Len = tmp_sg[i].length;
2525 temp64.val = pci_map_page(h->pdev, tmp_sg[i].page,
2526 tmp_sg[i].offset, tmp_sg[i].length, ddir);
2527 c->SG[i].Addr.lower = temp64.val32.lower;
2528 c->SG[i].Addr.upper = temp64.val32.upper;
2529 c->SG[i].Ext = 0; /* we are not chaining */
2530 }
2531 /* track how many SG entries we are using */
2532 if (seg > h->maxSG)
2533 h->maxSG = seg;
2534
2535 #ifdef CCISS_DEBUG
2536 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", sect, seg);
2537 #endif /* CCISS_DEBUG */
2538
2539 c->Header.SGList = c->Header.SGTotal = seg;
2540 c->Request.CDB[1]= 0;
2541 c->Request.CDB[2]= (start_blk >> 24) & 0xff; /* MSB */
2542 c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2543 c->Request.CDB[4]= (start_blk >> 8) & 0xff;
2544 c->Request.CDB[5]= start_blk & 0xff;
2545 c->Request.CDB[6]= 0; /* (sect >> 24) & 0xff; MSB */
2546 c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff;
2547 c->Request.CDB[8]= creq->nr_sectors & 0xff;
2548 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2549
2550 spin_lock_irq(&io_request_lock);
2551
2552 addQ(&(h->reqQ),c);
2553 h->Qdepth++;
2554 if (h->Qdepth > h->maxQsinceinit)
2555 h->maxQsinceinit = h->Qdepth;
2556
2557 goto next;
2558
2559 startio:
2560 start_io(h);
2561 }
2562
do_cciss_intr(int irq,void * dev_id,struct pt_regs * regs)2563 static void do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2564 {
2565 ctlr_info_t *h = dev_id;
2566 CommandList_struct *c;
2567 unsigned long flags;
2568 __u32 a, a1;
2569
2570
2571 /* Is this interrupt for us? */
2572 if ((h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2573 return;
2574
2575 /*
2576 * If there are completed commands in the completion queue,
2577 * we had better do something about it.
2578 */
2579 spin_lock_irqsave(&io_request_lock, flags);
2580 while( h->access.intr_pending(h)) {
2581 while((a = h->access.command_completed(h)) != FIFO_EMPTY) {
2582 a1 = a;
2583 a &= ~3;
2584 if ((c = h->cmpQ) == NULL) {
2585 printk(KERN_WARNING "cciss: Completion of %08lx ignored\n", (unsigned long)a1);
2586 continue;
2587 }
2588 while(c->busaddr != a) {
2589 c = c->next;
2590 if (c == h->cmpQ)
2591 break;
2592 }
2593 /*
2594 * If we've found the command, take it off the
2595 * completion Q and free it
2596 */
2597 if (c->busaddr == a) {
2598 removeQ(&h->cmpQ, c);
2599 if (c->cmd_type == CMD_RWREQ) {
2600 complete_command(h, c, 0);
2601 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2602 complete(c->waiting);
2603 }
2604 # ifdef CONFIG_CISS_SCSI_TAPE
2605 else if (c->cmd_type == CMD_SCSI) {
2606 complete_scsi_command(c, 0, a1);
2607 }
2608 # endif
2609 continue;
2610 }
2611 }
2612 }
2613 /*
2614 * See if we can queue up some more IO
2615 */
2616 do_cciss_request(BLK_DEFAULT_QUEUE(h->major));
2617 spin_unlock_irqrestore(&io_request_lock, flags);
2618 }
2619 /*
2620 * We cannot read the structure directly, for portablity we must use
2621 * the io functions.
2622 * This is for debug only.
2623 */
2624 #ifdef CCISS_DEBUG
print_cfg_table(CfgTable_struct * tb)2625 static void print_cfg_table( CfgTable_struct *tb)
2626 {
2627 int i;
2628 char temp_name[17];
2629
2630 printk("Controller Configuration information\n");
2631 printk("------------------------------------\n");
2632 for(i=0;i<4;i++)
2633 temp_name[i] = readb(&(tb->Signature[i]));
2634 temp_name[4]='\0';
2635 printk(" Signature = %s\n", temp_name);
2636 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2637 printk(" Transport methods supported = 0x%x\n",
2638 readl(&(tb-> TransportSupport)));
2639 printk(" Transport methods active = 0x%x\n",
2640 readl(&(tb->TransportActive)));
2641 printk(" Requested transport Method = 0x%x\n",
2642 readl(&(tb->HostWrite.TransportRequest)));
2643 printk(" Coalese Interrupt Delay = 0x%x\n",
2644 readl(&(tb->HostWrite.CoalIntDelay)));
2645 printk(" Coalese Interrupt Count = 0x%x\n",
2646 readl(&(tb->HostWrite.CoalIntCount)));
2647 printk(" Max outstanding commands = 0x%d\n",
2648 readl(&(tb->CmdsOutMax)));
2649 printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2650 for(i=0;i<16;i++)
2651 temp_name[i] = readb(&(tb->ServerName[i]));
2652 temp_name[16] = '\0';
2653 printk(" Server Name = %s\n", temp_name);
2654 printk(" Heartbeat Counter = 0x%x\n\n\n",
2655 readl(&(tb->HeartBeat)));
2656 }
2657 #endif /* CCISS_DEBUG */
2658
release_io_mem(ctlr_info_t * c)2659 static void release_io_mem(ctlr_info_t *c)
2660 {
2661 /* if IO mem was not protected do nothing */
2662 if (c->io_mem_addr == 0)
2663 return;
2664 release_region(c->io_mem_addr, c->io_mem_length);
2665 c->io_mem_addr = 0;
2666 c->io_mem_length = 0;
2667 }
find_PCI_BAR_index(struct pci_dev * pdev,unsigned long pci_bar_addr)2668 static int find_PCI_BAR_index(struct pci_dev *pdev,
2669 unsigned long pci_bar_addr)
2670 {
2671 int i, offset, mem_type, bar_type;
2672 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2673 return 0;
2674 offset = 0;
2675 for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2676 bar_type = pci_resource_flags(pdev, i) &
2677 PCI_BASE_ADDRESS_SPACE;
2678 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2679 offset += 4;
2680 else {
2681 mem_type = pci_resource_flags(pdev, i) &
2682 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2683 switch (mem_type) {
2684 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2685 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2686 offset += 4; /* 32 bit */
2687 break;
2688 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2689 offset += 8;
2690 break;
2691 default: /* reserved in PCI 2.2 */
2692 printk(KERN_WARNING "Base address is invalid\n");
2693 return -1;
2694 break;
2695 }
2696 }
2697 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2698 return i+1;
2699 }
2700 return -1;
2701 }
2702
cciss_pci_init(ctlr_info_t * c,struct pci_dev * pdev)2703 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2704 {
2705 ushort subsystem_vendor_id, subsystem_device_id, command;
2706 int ready = 0;
2707 __u32 board_id, scratchpad;
2708 __u64 cfg_offset;
2709 __u32 cfg_base_addr;
2710 __u64 cfg_base_addr_index;
2711 int i;
2712
2713 /* check to see if controller has been disabled */
2714 /* BEFORE we try to enable it */
2715 (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2716 if (!(command & 0x02)) {
2717 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2718 return -1;
2719 }
2720 if (pci_enable_device(pdev)) {
2721 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2722 return -1;
2723 }
2724 if (pci_set_dma_mask(pdev, CCISS_DMA_MASK ) != 0) {
2725 printk(KERN_ERR "cciss: Unable to set DMA mask\n");
2726 return -1;
2727 }
2728
2729 subsystem_vendor_id = pdev->subsystem_vendor;
2730 subsystem_device_id = pdev->subsystem_device;
2731 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2732 subsystem_vendor_id );
2733
2734
2735 /* search for our IO range so we can protect it */
2736 for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2737 /* is this an IO range */
2738 if (pci_resource_flags(pdev, i) & 0x01) {
2739 c->io_mem_addr = pci_resource_start(pdev, i);
2740 c->io_mem_length = pci_resource_end(pdev, i) -
2741 pci_resource_start(pdev, i) + 1;
2742 #ifdef CCISS_DEBUG
2743 printk("IO value found base_addr[%d] %lx %lx\n", i,
2744 c->io_mem_addr, c->io_mem_length);
2745 #endif /* CCISS_DEBUG */
2746 /* register the IO range */
2747 if (!request_region( c->io_mem_addr,
2748 c->io_mem_length, "cciss")) {
2749 printk(KERN_WARNING
2750 "cciss I/O memory range already in "
2751 "use addr=%lx length=%ld\n",
2752 c->io_mem_addr, c->io_mem_length);
2753 c->io_mem_addr= 0;
2754 c->io_mem_length = 0;
2755 }
2756 break;
2757 }
2758 }
2759
2760 #ifdef CCISS_DEBUG
2761 printk("command = %x\n", command);
2762 printk("irq = %x\n", pdev->irq);
2763 printk("board_id = %x\n", board_id);
2764 #endif /* CCISS_DEBUG */
2765
2766 c->intr = pdev->irq;
2767
2768 /*
2769 * Memory base addr is first addr , the second points to the config
2770 * table
2771 */
2772
2773 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2774 #ifdef CCISS_DEBUG
2775 printk("address 0 = %x\n", c->paddr);
2776 #endif /* CCISS_DEBUG */
2777 c->vaddr = remap_pci_mem(c->paddr, 200);
2778 /* Wait for the board to become ready. (PCI hotplug needs this.)
2779 * We poll for up to 120 secs, once per 100ms. */
2780 for (i=0; i < 1200; i++) {
2781 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2782 if (scratchpad == 0xffff0000) {
2783 ready = 1;
2784 break;
2785 }
2786 set_current_state(TASK_UNINTERRUPTIBLE);
2787 schedule_timeout(HZ / 10); /* wait 100ms */
2788 }
2789 if (!ready) {
2790 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2791 return -1;
2792 }
2793
2794 /* get the address index number */
2795 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2796 cfg_base_addr &= (__u32) 0x0000ffff;
2797 #ifdef CCISS_DEBUG
2798 printk("cfg base address = %x\n", cfg_base_addr);
2799 #endif /* CCISS_DEBUG */
2800 cfg_base_addr_index =
2801 find_PCI_BAR_index(pdev, cfg_base_addr);
2802 #ifdef CCISS_DEBUG
2803 printk("cfg base address index = %x\n", cfg_base_addr_index);
2804 #endif /* CCISS_DEBUG */
2805 if (cfg_base_addr_index == -1) {
2806 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2807 release_io_mem(c);
2808 return -1;
2809 }
2810
2811 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2812 #ifdef CCISS_DEBUG
2813 printk("cfg offset = %x\n", cfg_offset);
2814 #endif /* CCISS_DEBUG */
2815 c->cfgtable = (CfgTable_struct *)
2816 remap_pci_mem(pci_resource_start(pdev, cfg_base_addr_index)
2817 + cfg_offset, sizeof(CfgTable_struct));
2818 c->board_id = board_id;
2819
2820 #ifdef CCISS_DEBUG
2821 print_cfg_table(c->cfgtable);
2822 #endif /* CCISS_DEBUG */
2823
2824 for(i=0; i<NR_PRODUCTS; i++) {
2825 if (board_id == products[i].board_id) {
2826 c->product_name = products[i].product_name;
2827 c->access = *(products[i].access);
2828 break;
2829 }
2830 }
2831 if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
2832 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2833 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2834 (readb(&c->cfgtable->Signature[3]) != 'S') ) {
2835 printk("Does not appear to be a valid CISS config table\n");
2836 return -1;
2837 }
2838 /* We didn't find the controller in our list. We know the
2839 * signature is valid. If it's an HP device let's try to
2840 * bind to the device and fire it up. Otherwise we bail.
2841 */
2842 if (i == NR_PRODUCTS) {
2843 if (subsystem_vendor_id == PCI_VENDOR_ID_HP) {
2844 c->product_name = products[NR_PRODUCTS-1].product_name;
2845 c->access = *(products[NR_PRODUCTS-1].access);
2846 printk(KERN_WARNING "cciss: This is an unknown "
2847 "Smart Array controller.\n"
2848 "cciss: Please update to the latest driver "
2849 "available from www.hp.com.\n");
2850 } else {
2851 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2852 " to access the Smart Array controller %08lx\n"
2853 , (unsigned long)board_id);
2854 return -1;
2855 }
2856 }
2857
2858 #ifdef CONFIG_X86
2859 {
2860 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2861 __u32 prefetch;
2862 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2863 prefetch |= 0x100;
2864 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2865 }
2866 #endif
2867
2868 #ifdef CCISS_DEBUG
2869 printk("Trying to put board into Simple mode\n");
2870 #endif /* CCISS_DEBUG */
2871 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2872 /* Update the field, and then ring the doorbell */
2873 writel( CFGTBL_Trans_Simple,
2874 &(c->cfgtable->HostWrite.TransportRequest));
2875 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2876
2877 /* Here, we wait, possibly for a long time, (4 secs or more).
2878 * In some unlikely cases, (e.g. A failed 144 GB drive in a
2879 * RAID 5 set was hot replaced just as we're coming in here) it
2880 * can take that long. Normally (almost always) we will wait
2881 * less than 1 sec. */
2882 for(i=0;i<MAX_CONFIG_WAIT;i++) {
2883 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2884 break;
2885 /* delay and try again */
2886 set_current_state(TASK_INTERRUPTIBLE);
2887 schedule_timeout(1);
2888 }
2889
2890 #ifdef CCISS_DEBUG
2891 printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2892 #endif /* CCISS_DEBUG */
2893 #ifdef CCISS_DEBUG
2894 print_cfg_table(c->cfgtable);
2895 #endif /* CCISS_DEBUG */
2896
2897 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
2898 printk(KERN_WARNING "cciss: unable to get board into"
2899 " simple mode\n");
2900 return -1;
2901 }
2902 return 0;
2903
2904 }
2905
2906 /*
2907 * Gets information about the local volumes attached to the controller.
2908 */
cciss_getgeometry(int cntl_num)2909 static void cciss_getgeometry(int cntl_num)
2910 {
2911 ReportLunData_struct *ld_buff;
2912 ReadCapdata_struct *size_buff;
2913 InquiryData_struct *inq_buff;
2914 int return_code;
2915 int i;
2916 int listlength = 0;
2917 __u32 lunid = 0;
2918 int block_size;
2919 int total_size;
2920
2921 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2922 if (ld_buff == NULL) {
2923 printk(KERN_ERR "cciss: out of memory\n");
2924 return;
2925 }
2926 memset(ld_buff, 0, sizeof(ReportLunData_struct));
2927 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2928 if (size_buff == NULL) {
2929 printk(KERN_ERR "cciss: out of memory\n");
2930 kfree(ld_buff);
2931 return;
2932 }
2933 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2934 if (inq_buff == NULL) {
2935 printk(KERN_ERR "cciss: out of memory\n");
2936 kfree(ld_buff);
2937 kfree(size_buff);
2938 return;
2939 }
2940 /* Get the firmware version */
2941 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2942 sizeof(InquiryData_struct), 0, 0 ,0, NULL);
2943 if (return_code == IO_OK) {
2944 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2945 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2946 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2947 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2948 } else { /* send command failed */
2949 printk(KERN_WARNING "cciss: unable to determine firmware"
2950 " version of controller\n");
2951 }
2952 /* Get the number of logical volumes */
2953 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2954 sizeof(ReportLunData_struct), 0, 0, 0, NULL);
2955
2956 if (return_code == IO_OK) {
2957 #ifdef CCISS_DEBUG
2958 printk("LUN Data\n--------------------------\n");
2959 #endif /* CCISS_DEBUG */
2960
2961 listlength = be32_to_cpu(*((__u32 *) &ld_buff->LUNListLength[0]));
2962 } else { /* reading number of logical volumes failed */
2963 printk(KERN_WARNING "cciss: report logical volume"
2964 " command failed\n");
2965 listlength = 0;
2966 }
2967 hba[cntl_num]->num_luns = listlength / 8; /* 8 bytes pre entry */
2968 if (hba[cntl_num]->num_luns > CISS_MAX_LUN) {
2969 printk(KERN_ERR "cciss: only %d number of logical volumes supported\n",
2970 CISS_MAX_LUN);
2971 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2972 }
2973 #ifdef CCISS_DEBUG
2974 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2975 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2976 ld_buff->LUNListLength[3], hba[cntl_num]->num_luns);
2977 #endif /* CCISS_DEBUG */
2978
2979 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
2980 for(i=0; i< hba[cntl_num]->num_luns; i++) {
2981 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
2982 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
2983 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
2984 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2985 hba[cntl_num]->drv[i].LunID = lunid;
2986
2987 #ifdef CCISS_DEBUG
2988 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
2989 ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2],
2990 ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID);
2991 #endif /* CCISS_DEBUG */
2992
2993 memset(size_buff, 0, sizeof(ReadCapdata_struct));
2994 return_code = sendcmd(CCISS_READ_CAPACITY, cntl_num, size_buff,
2995 sizeof( ReadCapdata_struct), 1, i, 0, NULL);
2996 if (return_code == IO_OK) {
2997 total_size = (0xff &
2998 (unsigned int)(size_buff->total_size[0])) << 24;
2999 total_size |= (0xff &
3000 (unsigned int)(size_buff->total_size[1])) << 16;
3001 total_size |= (0xff &
3002 (unsigned int)(size_buff->total_size[2])) << 8;
3003 total_size |= (0xff & (unsigned int)
3004 (size_buff->total_size[3]));
3005 total_size++; /* command returns highest */
3006 /* block address */
3007
3008 block_size = (0xff &
3009 (unsigned int)(size_buff->block_size[0])) << 24;
3010 block_size |= (0xff &
3011 (unsigned int)(size_buff->block_size[1])) << 16;
3012 block_size |= (0xff &
3013 (unsigned int)(size_buff->block_size[2])) << 8;
3014 block_size |= (0xff &
3015 (unsigned int)(size_buff->block_size[3]));
3016 } else { /* read capacity command failed */
3017 printk(KERN_WARNING "cciss: read capacity failed\n");
3018 total_size = block_size = 0;
3019 }
3020 printk(KERN_INFO " blocks= %d block_size= %d\n",
3021 total_size, block_size);
3022
3023 /* Execute the command to read the disk geometry */
3024 memset(inq_buff, 0, sizeof(InquiryData_struct));
3025 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
3026 sizeof(InquiryData_struct), 1, i, 0xC1, NULL );
3027 if (return_code == IO_OK) {
3028 if (inq_buff->data_byte[8] == 0xFF) {
3029 printk(KERN_WARNING "cciss: reading geometry failed, volume does not support reading geometry\n");
3030
3031 hba[cntl_num]->drv[i].block_size = block_size;
3032 hba[cntl_num]->drv[i].nr_blocks = total_size;
3033 hba[cntl_num]->drv[i].heads = 255;
3034 hba[cntl_num]->drv[i].sectors = 32; /* Sectors */
3035 /* per track */
3036 hba[cntl_num]->drv[i].cylinders = total_size
3037 / 255 / 32;
3038 } else {
3039
3040 hba[cntl_num]->drv[i].block_size = block_size;
3041 hba[cntl_num]->drv[i].nr_blocks = total_size;
3042 hba[cntl_num]->drv[i].heads =
3043 inq_buff->data_byte[6];
3044 hba[cntl_num]->drv[i].sectors =
3045 inq_buff->data_byte[7];
3046 hba[cntl_num]->drv[i].cylinders =
3047 (inq_buff->data_byte[4] & 0xff) << 8;
3048 hba[cntl_num]->drv[i].cylinders +=
3049 inq_buff->data_byte[5];
3050 hba[cntl_num]->drv[i].raid_level =
3051 inq_buff->data_byte[8];
3052 }
3053 }
3054 else { /* Get geometry failed */
3055 printk(KERN_WARNING "cciss: reading geometry failed, continuing with default geometry\n");
3056
3057 hba[cntl_num]->drv[i].block_size = block_size;
3058 hba[cntl_num]->drv[i].nr_blocks = total_size;
3059 hba[cntl_num]->drv[i].heads = 255;
3060 hba[cntl_num]->drv[i].sectors = 32; /* Sectors */
3061 /* per track */
3062 hba[cntl_num]->drv[i].cylinders = total_size / 255 / 32;
3063 }
3064 if (hba[cntl_num]->drv[i].raid_level > 5)
3065 hba[cntl_num]->drv[i].raid_level = RAID_UNKNOWN;
3066 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d RAID %s\n\n",
3067 hba[cntl_num]->drv[i].heads,
3068 hba[cntl_num]->drv[i].sectors,
3069 hba[cntl_num]->drv[i].cylinders,
3070 raid_label[hba[cntl_num]->drv[i].raid_level]);
3071 }
3072 kfree(ld_buff);
3073 kfree(size_buff);
3074 kfree(inq_buff);
3075 }
3076
3077 /* Function to find the first free pointer into our hba[] array */
3078 /* Returns -1 if no free entries are left. */
alloc_cciss_hba(void)3079 static int alloc_cciss_hba(void)
3080 {
3081 int i;
3082 for(i=0; i< MAX_CTLR; i++) {
3083 if (hba[i] == NULL) {
3084 hba[i] = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
3085 if (hba[i]==NULL) {
3086 printk(KERN_ERR "cciss: out of memory.\n");
3087 return -1;
3088 }
3089 return i;
3090 }
3091 }
3092 printk(KERN_WARNING
3093 "cciss: This driver supports a maximum of %d controllers.\n"
3094 "You can change this value in cciss.c and recompile.\n",
3095 MAX_CTLR);
3096 return -1;
3097 }
3098
free_hba(int i)3099 static void free_hba(int i)
3100 {
3101 kfree(hba[i]);
3102 hba[i]=NULL;
3103 }
3104 #ifdef CONFIG_CISS_MONITOR_THREAD
fail_all_cmds(unsigned long ctlr)3105 static void fail_all_cmds(unsigned long ctlr)
3106 {
3107 /* If we get here, the board is apparently dead. */
3108 ctlr_info_t *h = hba[ctlr];
3109 CommandList_struct *c;
3110 unsigned long flags;
3111
3112 printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr);
3113 h->alive = 0; /* the controller apparently died... */
3114
3115 spin_lock_irqsave(&io_request_lock, flags);
3116
3117 pci_disable_device(h->pdev); /* Make sure it is really dead. */
3118
3119 /* move everything off the request queue onto the completed queue */
3120 while( (c = h->reqQ) != NULL ) {
3121 removeQ(&(h->reqQ), c);
3122 h->Qdepth--;
3123 addQ (&(h->cmpQ), c);
3124 }
3125
3126 /* Now, fail everything on the completed queue with a HW error */
3127 while( (c = h->cmpQ) != NULL ) {
3128 removeQ(&h->cmpQ, c);
3129 c->err_info->CommandStatus = CMD_HARDWARE_ERR;
3130 if (c->cmd_type == CMD_RWREQ) {
3131 complete_command(h, c, 0);
3132 } else if (c->cmd_type == CMD_IOCTL_PEND)
3133 complete(c->waiting);
3134 # ifdef CONFIG_CISS_SCSI_TAPE
3135 else if (c->cmd_type == CMD_SCSI)
3136 complete_scsi_command(c, 0, 0);
3137 # endif
3138 }
3139 spin_unlock_irqrestore(&io_request_lock, flags);
3140 return;
3141 }
cciss_monitor(void * ctlr)3142 static int cciss_monitor(void *ctlr)
3143 {
3144 /* If the board fails, we ought to detect that. So we periodically
3145 send down a No-Op message and expect it to complete quickly. If it
3146 doesn't, then we assume the board is dead, and fail all commands.
3147 This is useful mostly in a multipath configuration, so that failover
3148 will happen. */
3149
3150 int rc;
3151 ctlr_info_t *h = (ctlr_info_t *) ctlr;
3152 unsigned long flags;
3153 u32 current_timer;
3154
3155 daemonize();
3156 exit_files(current);
3157 reparent_to_init();
3158
3159 printk("cciss%d: Monitor thread starting.\n", h->ctlr);
3160
3161 /* only listen to signals if the HA was loaded as a module. */
3162 #define SHUTDOWN_SIGS (sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGTERM))
3163 siginitsetinv(¤t->blocked, SHUTDOWN_SIGS);
3164 sprintf(current->comm, "ccissmon%d", h->ctlr);
3165 h->monitor_thread = current;
3166
3167 init_timer(&h->watchdog);
3168 h->watchdog.function = fail_all_cmds;
3169 h->watchdog.data = (unsigned long) h->ctlr;
3170 while (1) {
3171 /* check heartbeat timer */
3172 current_timer = readl(&h->cfgtable->HeartBeat);
3173 current_timer &= 0x0fffffff;
3174 if (heartbeat_timer == current_timer) {
3175 fail_all_cmds(h->ctlr);
3176 break;
3177 }
3178 else
3179 heartbeat_timer = current_timer;
3180
3181 set_current_state(TASK_UNINTERRUPTIBLE);
3182 schedule_timeout(h->monitor_period * HZ);
3183 h->watchdog.expires = jiffies + HZ * h->monitor_deadline;
3184 add_timer(&h->watchdog);
3185 /* send down a trivial command (no op message) to ctlr */
3186 rc = sendcmd_withirq(3, h->ctlr, NULL, 0, 0, 0, 0, TYPE_MSG);
3187 del_timer(&h->watchdog);
3188 if (!CTLR_IS_ALIVE(h))
3189 break;
3190 if (signal_pending(current)) {
3191 printk(KERN_WARNING "%s received signal.\n",
3192 current->comm);
3193 break;
3194 }
3195 if (h->monitor_period == 0) /* zero period means exit thread */
3196 break;
3197 }
3198 printk(KERN_INFO "%s exiting.\n", current->comm);
3199 spin_lock_irqsave(&io_request_lock, flags);
3200 h->monitor_started = 0;
3201 h->monitor_thread = NULL;
3202 spin_unlock_irqrestore(&io_request_lock, flags);
3203 return 0;
3204 }
start_monitor_thread(ctlr_info_t * h,unsigned char * cmd,unsigned long count,int (* cciss_monitor)(void *),int * rc)3205 static int start_monitor_thread(ctlr_info_t *h, unsigned char *cmd,
3206 unsigned long count, int (*cciss_monitor)(void *), int *rc)
3207 {
3208 unsigned long flags;
3209 unsigned int new_period, old_period, new_deadline, old_deadline;
3210
3211 if (strncmp("monitor", cmd, 7) == 0) {
3212 new_period = simple_strtol(cmd + 8, NULL, 10);
3213 spin_lock_irqsave(&io_request_lock, flags);
3214 new_deadline = h->monitor_deadline;
3215 spin_unlock_irqrestore(&io_request_lock, flags);
3216 } else if (strncmp("deadline", cmd, 8) == 0) {
3217 new_deadline = simple_strtol(cmd + 9, NULL, 10);
3218 spin_lock_irqsave(&io_request_lock, flags);
3219 new_period = h->monitor_period;
3220 spin_unlock_irqrestore(&io_request_lock, flags);
3221 } else
3222 return -1;
3223 if (new_period != 0 && new_period < CCISS_MIN_PERIOD)
3224 new_period = CCISS_MIN_PERIOD;
3225 if (new_period > CCISS_MAX_PERIOD)
3226 new_period = CCISS_MAX_PERIOD;
3227 if (new_deadline >= new_period) {
3228 new_deadline = new_period - 5;
3229 printk(KERN_INFO "setting deadline to %d\n", new_deadline);
3230 }
3231 spin_lock_irqsave(&io_request_lock, flags);
3232 if (h->monitor_started != 0) {
3233 old_period = h->monitor_period;
3234 old_deadline = h->monitor_deadline;
3235 h->monitor_period = new_period;
3236 h->monitor_deadline = new_deadline;
3237 spin_unlock_irqrestore(&io_request_lock, flags);
3238 if (new_period == 0) {
3239 printk(KERN_INFO "cciss%d: stopping monitor thread\n",
3240 h->ctlr);
3241 *rc = count;
3242 return 0;
3243 }
3244 if (new_period != old_period)
3245 printk(KERN_INFO "cciss%d: adjusting monitor thread "
3246 "period from %d to %d seconds\n",
3247 h->ctlr, old_period, new_period);
3248 if (new_deadline != old_deadline)
3249 printk(KERN_INFO "cciss%d: adjusting monitor thread "
3250 "deadline from %d to %d seconds\n",
3251 h->ctlr, old_deadline, new_deadline);
3252 *rc = count;
3253 return 0;
3254 }
3255 h->monitor_started = 1;
3256 h->monitor_period = new_period;
3257 h->monitor_deadline = new_deadline;
3258 spin_unlock_irqrestore(&io_request_lock, flags);
3259 kernel_thread(cciss_monitor, h, 0);
3260 *rc = count;
3261 return 0;
3262 }
3263
kill_monitor_thread(ctlr_info_t * h)3264 static void kill_monitor_thread(ctlr_info_t *h)
3265 {
3266 if (h->monitor_thread)
3267 send_sig(SIGKILL, h->monitor_thread, 1);
3268 }
3269 #else
3270 #define kill_monitor_thread(h)
3271 #endif
3272 /*
3273 * This is it. Find all the controllers and register them. I really hate
3274 * stealing all these major device numbers.
3275 * returns the number of block devices registered.
3276 */
cciss_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)3277 static int __init cciss_init_one(struct pci_dev *pdev,
3278 const struct pci_device_id *ent)
3279 {
3280 request_queue_t *q;
3281 int i;
3282 int j;
3283 int rc;
3284
3285 printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
3286 " bus %d dev %d func %d\n",
3287 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
3288 PCI_FUNC(pdev->devfn));
3289 i = alloc_cciss_hba();
3290 if (i < 0 )
3291 return -1;
3292 memset(hba[i], 0, sizeof(ctlr_info_t));
3293 if (cciss_pci_init(hba[i], pdev) != 0) {
3294 free_hba(i);
3295 return -1;
3296 }
3297 sprintf(hba[i]->devname, "cciss%d", i);
3298 hba[i]->ctlr = i;
3299
3300 /* register with the major number, or get a dynamic major number */
3301 /* by passing 0 as argument */
3302
3303 if (i < MAX_CTLR_ORIG)
3304 hba[i]->major = MAJOR_NR + i;
3305
3306 hba[i]->pdev = pdev;
3307 ASSERT_CTLR_ALIVE(hba[i]);
3308
3309 rc = (register_blkdev(hba[i]->major, hba[i]->devname, &cciss_fops));
3310 if (rc < 0) {
3311 printk(KERN_ERR "cciss: Unable to get major number "
3312 "%d for %s\n", hba[i]->major, hba[i]->devname);
3313 release_io_mem(hba[i]);
3314 free_hba(i);
3315 return -1;
3316 } else {
3317 if (i < MAX_CTLR_ORIG) {
3318 hba[i]->major = MAJOR_NR + i;
3319 map_major_to_ctlr[MAJOR_NR + i] = i;
3320 } else {
3321 hba[i]->major = rc;
3322 map_major_to_ctlr[rc] = i;
3323 }
3324 }
3325
3326 /* make sure the board interrupts are off */
3327 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
3328 if (request_irq(hba[i]->intr, do_cciss_intr,
3329 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
3330 hba[i]->devname, hba[i])) {
3331
3332 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
3333 hba[i]->intr, hba[i]->devname);
3334 unregister_blkdev( hba[i]->major, hba[i]->devname);
3335 map_major_to_ctlr[hba[i]->major] = 0;
3336 release_io_mem(hba[i]);
3337 free_hba(i);
3338 return -1;
3339 }
3340 hba[i]->cmd_pool_bits = (__u32*)kmalloc(
3341 ((NR_CMDS+31)/32)*sizeof(__u32), GFP_KERNEL);
3342 hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
3343 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
3344 &(hba[i]->cmd_pool_dhandle));
3345 hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
3346 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
3347 &(hba[i]->errinfo_pool_dhandle));
3348 if ((hba[i]->cmd_pool_bits == NULL)
3349 || (hba[i]->cmd_pool == NULL)
3350 || (hba[i]->errinfo_pool == NULL)) {
3351
3352 if (hba[i]->cmd_pool_bits)
3353 kfree(hba[i]->cmd_pool_bits);
3354 if (hba[i]->cmd_pool)
3355 pci_free_consistent(hba[i]->pdev,
3356 NR_CMDS * sizeof(CommandList_struct),
3357 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3358 if (hba[i]->errinfo_pool)
3359 pci_free_consistent(hba[i]->pdev,
3360 NR_CMDS * sizeof( ErrorInfo_struct),
3361 hba[i]->errinfo_pool,
3362 hba[i]->errinfo_pool_dhandle);
3363 free_irq(hba[i]->intr, hba[i]);
3364 unregister_blkdev(hba[i]->major, hba[i]->devname);
3365 map_major_to_ctlr[hba[i]->major] = 0;
3366 release_io_mem(hba[i]);
3367 free_hba(i);
3368 printk( KERN_ERR "cciss: out of memory");
3369 return -1;
3370 }
3371
3372 /* Initialize the pdev driver private data.
3373 have it point to hba[i]. */
3374 pci_set_drvdata(pdev, hba[i]);
3375 /* command and error info recs zeroed out before
3376 they are used */
3377 memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+31)/32)*sizeof(__u32));
3378
3379 #ifdef CCISS_DEBUG
3380 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
3381 #endif /* CCISS_DEBUG */
3382
3383 cciss_getgeometry(i);
3384
3385 cciss_find_non_disk_devices(i); /* find our tape drives, if any */
3386
3387 /* Turn the interrupts on so we can service requests */
3388 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
3389
3390 cciss_procinit(i);
3391
3392 q = BLK_DEFAULT_QUEUE(hba[i]->major);
3393 q->queuedata = hba[i];
3394 blk_init_queue(q, do_cciss_request);
3395 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
3396 blk_queue_headactive(q, 0);
3397
3398 /* fill in the other Kernel structs */
3399 blksize_size[hba[i]->major] = hba[i]->blocksizes;
3400 hardsect_size[hba[i]->major] = hba[i]->hardsizes;
3401 read_ahead[hba[i]->major] = READ_AHEAD;
3402
3403 /* Set the pointers to queue functions */
3404 q->back_merge_fn = cpq_back_merge_fn;
3405 q->front_merge_fn = cpq_front_merge_fn;
3406 q->merge_requests_fn = cpq_merge_requests_fn;
3407
3408
3409 /* Fill in the gendisk data */
3410 hba[i]->gendisk.major = hba[i]->major;
3411 hba[i]->gendisk.major_name = "cciss";
3412 hba[i]->gendisk.minor_shift = NWD_SHIFT;
3413 hba[i]->gendisk.max_p = MAX_PART;
3414 hba[i]->gendisk.part = hba[i]->hd;
3415 hba[i]->gendisk.sizes = hba[i]->sizes;
3416 hba[i]->gendisk.nr_real = hba[i]->highest_lun+1;
3417 hba[i]->gendisk.fops = &cciss_fops;
3418
3419 /* Get on the disk list */
3420 add_gendisk(&(hba[i]->gendisk));
3421
3422 cciss_geninit(i);
3423 for(j=0; j<NWD; j++)
3424 register_disk(&(hba[i]->gendisk),
3425 MKDEV(hba[i]->major, j <<4),
3426 MAX_PART, &cciss_fops,
3427 hba[i]->drv[j].nr_blocks);
3428
3429 cciss_register_scsi(i, 1); /* hook ourself into SCSI subsystem */
3430
3431 return 1;
3432 }
3433
cciss_remove_one(struct pci_dev * pdev)3434 static void __devexit cciss_remove_one (struct pci_dev *pdev)
3435 {
3436 ctlr_info_t *tmp_ptr;
3437 int i;
3438 char flush_buf[4];
3439 int return_code;
3440
3441 if (pci_get_drvdata(pdev) == NULL) {
3442 printk( KERN_ERR "cciss: Unable to remove device \n");
3443 return;
3444 }
3445 tmp_ptr = pci_get_drvdata(pdev);
3446 i = tmp_ptr->ctlr;
3447 if (hba[i] == NULL) {
3448 printk(KERN_ERR "cciss: device appears to "
3449 "already be removed \n");
3450 return;
3451 }
3452 kill_monitor_thread(hba[i]);
3453 /* no sense in trying to flush a dead board's cache. */
3454 if (CTLR_IS_ALIVE(hba[i])) {
3455 /* Turn board interrupts off and flush the cache */
3456 /* write all data in the battery backed cache to disks */
3457 memset(flush_buf, 0, 4);
3458 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf,
3459 4, 0, 0, 0, NULL);
3460 if (return_code != IO_OK)
3461 printk(KERN_WARNING
3462 "cciss%d: Error flushing cache\n", i);
3463 }
3464 free_irq(hba[i]->intr, hba[i]);
3465 pci_set_drvdata(pdev, NULL);
3466 iounmap((void*)hba[i]->vaddr);
3467 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
3468 unregister_blkdev(hba[i]->major, hba[i]->devname);
3469 map_major_to_ctlr[hba[i]->major] = 0;
3470 remove_proc_entry(hba[i]->devname, proc_cciss);
3471
3472
3473 /* remove it from the disk list */
3474 del_gendisk(&(hba[i]->gendisk));
3475
3476 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
3477 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
3478 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
3479 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
3480 kfree(hba[i]->cmd_pool_bits);
3481 release_io_mem(hba[i]);
3482 free_hba(i);
3483 }
3484
3485 static struct pci_driver cciss_pci_driver = {
3486 name: "cciss",
3487 probe: cciss_init_one,
3488 remove: __devexit_p(cciss_remove_one),
3489 id_table: cciss_pci_device_id, /* id_table */
3490 };
3491
3492 /*
3493 * This is it. Register the PCI driver information for the cards we control
3494 * the OS will call our registered routines when it finds one of our cards.
3495 */
cciss_init(void)3496 int __init cciss_init(void)
3497 {
3498
3499 printk(KERN_INFO DRIVER_NAME "\n");
3500 /* Register for out PCI devices */
3501 return pci_module_init(&cciss_pci_driver);
3502 }
3503
3504 EXPORT_NO_SYMBOLS;
init_cciss_module(void)3505 static int __init init_cciss_module(void)
3506 {
3507 register_cciss_ioctl32();
3508 return cciss_init();
3509 }
3510
cleanup_cciss_module(void)3511 static void __exit cleanup_cciss_module(void)
3512 {
3513 int i;
3514
3515 unregister_cciss_ioctl32();
3516 pci_unregister_driver(&cciss_pci_driver);
3517 /* double check that all controller entrys have been removed */
3518 for (i=0; i< MAX_CTLR; i++) {
3519 if (hba[i] != NULL) {
3520 printk(KERN_WARNING "cciss: had to remove"
3521 " controller %d\n", i);
3522 cciss_remove_one(hba[i]->pdev);
3523 }
3524 }
3525 remove_proc_entry("cciss", proc_root_driver);
3526 }
3527
3528 module_init(init_cciss_module);
3529 module_exit(cleanup_cciss_module);
3530