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[PATCH] cciss: busy_initializing flag
[deliverable/linux.git] / drivers / block / cciss.c
CommitLineData
1da177e4
LT		 1/*
2 * Disk Array driver for HP SA 5xxx and 6xxx Controllers
3de0a70b 3 * Copyright 2000, 2005 Hewlett-Packard Development Company, L.P.
1da177e4
LT		 4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 *
19 * Questions/Comments/Bugfixes to iss_storagedev@hp.com
20 *
21 */
22
23#include <linux/config.h> /* CONFIG_PROC_FS */
24#include <linux/module.h>
25#include <linux/interrupt.h>
26#include <linux/types.h>
27#include <linux/pci.h>
28#include <linux/kernel.h>
29#include <linux/slab.h>
30#include <linux/delay.h>
31#include <linux/major.h>
32#include <linux/fs.h>
33#include <linux/bio.h>
34#include <linux/blkpg.h>
35#include <linux/timer.h>
36#include <linux/proc_fs.h>
37#include <linux/init.h>
38#include <linux/hdreg.h>
39#include <linux/spinlock.h>
40#include <linux/compat.h>
41#include <asm/uaccess.h>
42#include <asm/io.h>
43
eb0df996 44#include <linux/dma-mapping.h>
1da177e4
LT		 45#include <linux/blkdev.h>
46#include <linux/genhd.h>
47#include <linux/completion.h>
48
49#define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
9dc7a86e
MM		 50#define DRIVER_NAME "HP CISS Driver (v 2.6.8)"
51#define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,8)
1da177e4
LT		 52
53/* Embedded module documentation macros - see modules.h */
54MODULE_AUTHOR("Hewlett-Packard Company");
9dc7a86e 55MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.8");
1da177e4 56MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
9dc7a86e 57 " SA6i P600 P800 P400 P400i E200 E200i");
1da177e4
LT		 58MODULE_LICENSE("GPL");
59
60#include "cciss_cmd.h"
61#include "cciss.h"
62#include <linux/cciss_ioctl.h>
63
64/* define the PCI info for the cards we can control */
65static const struct pci_device_id cciss_pci_device_id[] = {
66 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS,
67 0x0E11, 0x4070, 0, 0, 0},
68 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
69 0x0E11, 0x4080, 0, 0, 0},
70 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
71 0x0E11, 0x4082, 0, 0, 0},
72 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
73 0x0E11, 0x4083, 0, 0, 0},
74 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
75 0x0E11, 0x409A, 0, 0, 0},
76 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
77 0x0E11, 0x409B, 0, 0, 0},
78 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
79 0x0E11, 0x409C, 0, 0, 0},
80 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
81 0x0E11, 0x409D, 0, 0, 0},
82 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
83 0x0E11, 0x4091, 0, 0, 0},
84 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA,
85 0x103C, 0x3225, 0, 0, 0},
9dc7a86e 86 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
1da177e4 87 0x103c, 0x3223, 0, 0, 0},
3de0a70b 88 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
9dc7a86e 89 0x103c, 0x3234, 0, 0, 0},
3de0a70b 90 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
9dc7a86e
MM		 91 0x103c, 0x3235, 0, 0, 0},
92 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
93 0x103c, 0x3211, 0, 0, 0},
94 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
95 0x103c, 0x3212, 0, 0, 0},
96 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
97 0x103c, 0x3213, 0, 0, 0},
98 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
99 0x103c, 0x3214, 0, 0, 0},
100 { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
101 0x103c, 0x3215, 0, 0, 0},
1da177e4
LT		 102 {0,}
103};
104MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
105
106#define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
107
108/* board_id = Subsystem Device ID & Vendor ID
109 * product = Marketing Name for the board
110 * access = Address of the struct of function pointers
111 */
112static struct board_type products[] = {
113 { 0x40700E11, "Smart Array 5300", &SA5_access },
114 { 0x40800E11, "Smart Array 5i", &SA5B_access},
115 { 0x40820E11, "Smart Array 532", &SA5B_access},
116 { 0x40830E11, "Smart Array 5312", &SA5B_access},
117 { 0x409A0E11, "Smart Array 641", &SA5_access},
118 { 0x409B0E11, "Smart Array 642", &SA5_access},
119 { 0x409C0E11, "Smart Array 6400", &SA5_access},
120 { 0x409D0E11, "Smart Array 6400 EM", &SA5_access},
121 { 0x40910E11, "Smart Array 6i", &SA5_access},
122 { 0x3225103C, "Smart Array P600", &SA5_access},
123 { 0x3223103C, "Smart Array P800", &SA5_access},
9dc7a86e
MM		 124 { 0x3234103C, "Smart Array P400", &SA5_access},
125 { 0x3235103C, "Smart Array P400i", &SA5_access},
126 { 0x3211103C, "Smart Array E200i", &SA5_access},
127 { 0x3212103C, "Smart Array E200", &SA5_access},
128 { 0x3213103C, "Smart Array E200i", &SA5_access},
129 { 0x3214103C, "Smart Array E200i", &SA5_access},
130 { 0x3215103C, "Smart Array E200i", &SA5_access},
1da177e4
LT		 131};
132
133/* How long to wait (in millesconds) for board to go into simple mode */
134#define MAX_CONFIG_WAIT 30000
135#define MAX_IOCTL_CONFIG_WAIT 1000
136
137/*define how many times we will try a command because of bus resets */
138#define MAX_CMD_RETRIES 3
139
140#define READ_AHEAD 1024
141#define NR_CMDS 384 /* #commands that can be outstanding */
142#define MAX_CTLR 32
143
144/* Originally cciss driver only supports 8 major numbers */
145#define MAX_CTLR_ORIG 8
146
147
1da177e4
LT		 148static ctlr_info_t *hba[MAX_CTLR];
149
150static void do_cciss_request(request_queue_t *q);
151static int cciss_open(struct inode *inode, struct file *filep);
152static int cciss_release(struct inode *inode, struct file *filep);
153static int cciss_ioctl(struct inode *inode, struct file *filep,
154 unsigned int cmd, unsigned long arg);
155
156static int revalidate_allvol(ctlr_info_t *host);
157static int cciss_revalidate(struct gendisk *disk);
158static int deregister_disk(struct gendisk *disk);
159static int register_new_disk(ctlr_info_t *h);
160
161static void cciss_getgeometry(int cntl_num);
162
163static void start_io( ctlr_info_t *h);
164static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
165 unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
166 unsigned char *scsi3addr, int cmd_type);
167
168#ifdef CONFIG_PROC_FS
169static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
170 int length, int *eof, void *data);
171static void cciss_procinit(int i);
172#else
173static void cciss_procinit(int i) {}
174#endif /* CONFIG_PROC_FS */
175
176#ifdef CONFIG_COMPAT
177static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
178#endif
179
180static struct block_device_operations cciss_fops = {
181 .owner = THIS_MODULE,
182 .open = cciss_open,
183 .release = cciss_release,
184 .ioctl = cciss_ioctl,
185#ifdef CONFIG_COMPAT
186 .compat_ioctl = cciss_compat_ioctl,
187#endif
188 .revalidate_disk= cciss_revalidate,
189};
190
191/*
192 * Enqueuing and dequeuing functions for cmdlists.
193 */
194static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
195{
196 if (*Qptr == NULL) {
197 *Qptr = c;
198 c->next = c->prev = c;
199 } else {
200 c->prev = (*Qptr)->prev;
201 c->next = (*Qptr);
202 (*Qptr)->prev->next = c;
203 (*Qptr)->prev = c;
204 }
205}
206
207static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
208 CommandList_struct *c)
209{
210 if (c && c->next != c) {
211 if (*Qptr == c) *Qptr = c->next;
212 c->prev->next = c->next;
213 c->next->prev = c->prev;
214 } else {
215 *Qptr = NULL;
216 }
217 return c;
218}
219
220#include "cciss_scsi.c" /* For SCSI tape support */
221
222#ifdef CONFIG_PROC_FS
223
224/*
225 * Report information about this controller.
226 */
227#define ENG_GIG 1000000000
228#define ENG_GIG_FACTOR (ENG_GIG/512)
229#define RAID_UNKNOWN 6
230static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
231 "UNKNOWN"};
232
233static struct proc_dir_entry *proc_cciss;
234
235static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
236 int length, int *eof, void *data)
237{
238 off_t pos = 0;
239 off_t len = 0;
240 int size, i, ctlr;
241 ctlr_info_t *h = (ctlr_info_t*)data;
242 drive_info_struct *drv;
243 unsigned long flags;
244 sector_t vol_sz, vol_sz_frac;
245
246 ctlr = h->ctlr;
247
248 /* prevent displaying bogus info during configuration
249 * or deconfiguration of a logical volume
250 */
251 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
252 if (h->busy_configuring) {
253 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
254 return -EBUSY;
255 }
256 h->busy_configuring = 1;
257 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
258
259 size = sprintf(buffer, "%s: HP %s Controller\n"
260 "Board ID: 0x%08lx\n"
261 "Firmware Version: %c%c%c%c\n"
262 "IRQ: %d\n"
263 "Logical drives: %d\n"
264 "Current Q depth: %d\n"
265 "Current # commands on controller: %d\n"
266 "Max Q depth since init: %d\n"
267 "Max # commands on controller since init: %d\n"
268 "Max SG entries since init: %d\n\n",
269 h->devname,
270 h->product_name,
271 (unsigned long)h->board_id,
272 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
273 (unsigned int)h->intr,
274 h->num_luns,
275 h->Qdepth, h->commands_outstanding,
276 h->maxQsinceinit, h->max_outstanding, h->maxSG);
277
278 pos += size; len += size;
279 cciss_proc_tape_report(ctlr, buffer, &pos, &len);
280 for(i=0; i<=h->highest_lun; i++) {
281
282 drv = &h->drv[i];
283 if (drv->block_size == 0)
284 continue;
285
286 vol_sz = drv->nr_blocks;
287 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
288 vol_sz_frac *= 100;
289 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
290
291 if (drv->raid_level > 5)
292 drv->raid_level = RAID_UNKNOWN;
293 size = sprintf(buffer+len, "cciss/c%dd%d:"
294 "\t%4u.%02uGB\tRAID %s\n",
295 ctlr, i, (int)vol_sz, (int)vol_sz_frac,
296 raid_label[drv->raid_level]);
297 pos += size; len += size;
298 }
299
300 *eof = 1;
301 *start = buffer+offset;
302 len -= offset;
303 if (len>length)
304 len = length;
305 h->busy_configuring = 0;
306 return len;
307}
308
309static int
310cciss_proc_write(struct file *file, const char __user *buffer,
311 unsigned long count, void *data)
312{
313 unsigned char cmd[80];
314 int len;
315#ifdef CONFIG_CISS_SCSI_TAPE
316 ctlr_info_t *h = (ctlr_info_t *) data;
317 int rc;
318#endif
319
320 if (count > sizeof(cmd)-1) return -EINVAL;
321 if (copy_from_user(cmd, buffer, count)) return -EFAULT;
322 cmd[count] = '\0';
323 len = strlen(cmd); // above 3 lines ensure safety
324 if (len && cmd[len-1] == '\n')
325 cmd[--len] = '\0';
326# ifdef CONFIG_CISS_SCSI_TAPE
327 if (strcmp("engage scsi", cmd)==0) {
328 rc = cciss_engage_scsi(h->ctlr);
329 if (rc != 0) return -rc;
330 return count;
331 }
332 /* might be nice to have "disengage" too, but it's not
333 safely possible. (only 1 module use count, lock issues.) */
334# endif
335 return -EINVAL;
336}
337
338/*
339 * Get us a file in /proc/cciss that says something about each controller.
340 * Create /proc/cciss if it doesn't exist yet.
341 */
342static void __devinit cciss_procinit(int i)
343{
344 struct proc_dir_entry *pde;
345
346 if (proc_cciss == NULL) {
347 proc_cciss = proc_mkdir("cciss", proc_root_driver);
348 if (!proc_cciss)
349 return;
350 }
351
352 pde = create_proc_read_entry(hba[i]->devname,
353 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
354 proc_cciss, cciss_proc_get_info, hba[i]);
355 pde->write_proc = cciss_proc_write;
356}
357#endif /* CONFIG_PROC_FS */
358
359/*
360 * For operations that cannot sleep, a command block is allocated at init,
361 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
362 * which ones are free or in use. For operations that can wait for kmalloc
363 * to possible sleep, this routine can be called with get_from_pool set to 0.
364 * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
365 */
366static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
367{
368 CommandList_struct *c;
369 int i;
370 u64bit temp64;
371 dma_addr_t cmd_dma_handle, err_dma_handle;
372
373 if (!get_from_pool)
374 {
375 c = (CommandList_struct *) pci_alloc_consistent(
376 h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
377 if(c==NULL)
378 return NULL;
379 memset(c, 0, sizeof(CommandList_struct));
380
381 c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
382 h->pdev, sizeof(ErrorInfo_struct),
383 &err_dma_handle);
384
385 if (c->err_info == NULL)
386 {
387 pci_free_consistent(h->pdev,
388 sizeof(CommandList_struct), c, cmd_dma_handle);
389 return NULL;
390 }
391 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
392 } else /* get it out of the controllers pool */
393 {
394 do {
395 i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
396 if (i == NR_CMDS)
397 return NULL;
398 } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
399#ifdef CCISS_DEBUG
400 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
401#endif
402 c = h->cmd_pool + i;
403 memset(c, 0, sizeof(CommandList_struct));
404 cmd_dma_handle = h->cmd_pool_dhandle
405 + i*sizeof(CommandList_struct);
406 c->err_info = h->errinfo_pool + i;
407 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
408 err_dma_handle = h->errinfo_pool_dhandle
409 + i*sizeof(ErrorInfo_struct);
410 h->nr_allocs++;
411 }
412
413 c->busaddr = (__u32) cmd_dma_handle;
414 temp64.val = (__u64) err_dma_handle;
415 c->ErrDesc.Addr.lower = temp64.val32.lower;
416 c->ErrDesc.Addr.upper = temp64.val32.upper;
417 c->ErrDesc.Len = sizeof(ErrorInfo_struct);
418
419 c->ctlr = h->ctlr;
420 return c;
421
422
423}
424
425/*
426 * Frees a command block that was previously allocated with cmd_alloc().
427 */
428static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
429{
430 int i;
431 u64bit temp64;
432
433 if( !got_from_pool)
434 {
435 temp64.val32.lower = c->ErrDesc.Addr.lower;
436 temp64.val32.upper = c->ErrDesc.Addr.upper;
437 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
438 c->err_info, (dma_addr_t) temp64.val);
439 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
440 c, (dma_addr_t) c->busaddr);
441 } else
442 {
443 i = c - h->cmd_pool;
444 clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
445 h->nr_frees++;
446 }
447}
448
449static inline ctlr_info_t *get_host(struct gendisk *disk)
450{
451 return disk->queue->queuedata;
452}
453
454static inline drive_info_struct *get_drv(struct gendisk *disk)
455{
456 return disk->private_data;
457}
458
459/*
460 * Open. Make sure the device is really there.
461 */
462static int cciss_open(struct inode *inode, struct file *filep)
463{
464 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
465 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
466
467#ifdef CCISS_DEBUG
468 printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
469#endif /* CCISS_DEBUG */
470
1f8ef380
MM		 471 if (host->busy_initializing)
472 return -EBUSY;
473
1da177e4
LT		 474 /*
475 * Root is allowed to open raw volume zero even if it's not configured
476 * so array config can still work. Root is also allowed to open any
477 * volume that has a LUN ID, so it can issue IOCTL to reread the
478 * disk information. I don't think I really like this
479 * but I'm already using way to many device nodes to claim another one
480 * for "raw controller".
481 */
482 if (drv->nr_blocks == 0) {
483 if (iminor(inode) != 0) { /* not node 0? */
484 /* if not node 0 make sure it is a partition = 0 */
485 if (iminor(inode) & 0x0f) {
486 return -ENXIO;
487 /* if it is, make sure we have a LUN ID */
488 } else if (drv->LunID == 0) {
489 return -ENXIO;
490 }
491 }
492 if (!capable(CAP_SYS_ADMIN))
493 return -EPERM;
494 }
495 drv->usage_count++;
496 host->usage_count++;
497 return 0;
498}
499/*
500 * Close. Sync first.
501 */
502static int cciss_release(struct inode *inode, struct file *filep)
503{
504 ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
505 drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
506
507#ifdef CCISS_DEBUG
508 printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
509#endif /* CCISS_DEBUG */
510
511 drv->usage_count--;
512 host->usage_count--;
513 return 0;
514}
515
516#ifdef CONFIG_COMPAT
517
518static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
519{
520 int ret;
521 lock_kernel();
522 ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
523 unlock_kernel();
524 return ret;
525}
526
527static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
528static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
529
530static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
531{
532 switch (cmd) {
533 case CCISS_GETPCIINFO:
534 case CCISS_GETINTINFO:
535 case CCISS_SETINTINFO:
536 case CCISS_GETNODENAME:
537 case CCISS_SETNODENAME:
538 case CCISS_GETHEARTBEAT:
539 case CCISS_GETBUSTYPES:
540 case CCISS_GETFIRMVER:
541 case CCISS_GETDRIVVER:
542 case CCISS_REVALIDVOLS:
543 case CCISS_DEREGDISK:
544 case CCISS_REGNEWDISK:
545 case CCISS_REGNEWD:
546 case CCISS_RESCANDISK:
547 case CCISS_GETLUNINFO:
548 return do_ioctl(f, cmd, arg);
549
550 case CCISS_PASSTHRU32:
551 return cciss_ioctl32_passthru(f, cmd, arg);
552 case CCISS_BIG_PASSTHRU32:
553 return cciss_ioctl32_big_passthru(f, cmd, arg);
554
555 default:
556 return -ENOIOCTLCMD;
557 }
558}
559
560static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
561{
562 IOCTL32_Command_struct __user *arg32 =
563 (IOCTL32_Command_struct __user *) arg;
564 IOCTL_Command_struct arg64;
565 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
566 int err;
567 u32 cp;
568
569 err = 0;
570 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
571 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
572 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
573 err |= get_user(arg64.buf_size, &arg32->buf_size);
574 err |= get_user(cp, &arg32->buf);
575 arg64.buf = compat_ptr(cp);
576 err |= copy_to_user(p, &arg64, sizeof(arg64));
577
578 if (err)
579 return -EFAULT;
580
581 err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
582 if (err)
583 return err;
584 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
585 if (err)
586 return -EFAULT;
587 return err;
588}
589
590static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
591{
592 BIG_IOCTL32_Command_struct __user *arg32 =
593 (BIG_IOCTL32_Command_struct __user *) arg;
594 BIG_IOCTL_Command_struct arg64;
595 BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
596 int err;
597 u32 cp;
598
599 err = 0;
600 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
601 err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
602 err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
603 err |= get_user(arg64.buf_size, &arg32->buf_size);
604 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
605 err |= get_user(cp, &arg32->buf);
606 arg64.buf = compat_ptr(cp);
607 err |= copy_to_user(p, &arg64, sizeof(arg64));
608
609 if (err)
610 return -EFAULT;
611
612 err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
613 if (err)
614 return err;
615 err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
616 if (err)
617 return -EFAULT;
618 return err;
619}
620#endif
621/*
622 * ioctl
623 */
624static int cciss_ioctl(struct inode *inode, struct file *filep,
625 unsigned int cmd, unsigned long arg)
626{
627 struct block_device *bdev = inode->i_bdev;
628 struct gendisk *disk = bdev->bd_disk;
629 ctlr_info_t *host = get_host(disk);
630 drive_info_struct *drv = get_drv(disk);
631 int ctlr = host->ctlr;
632 void __user *argp = (void __user *)arg;
633
634#ifdef CCISS_DEBUG
635 printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
636#endif /* CCISS_DEBUG */
637
638 switch(cmd) {
639 case HDIO_GETGEO:
640 {
641 struct hd_geometry driver_geo;
642 if (drv->cylinders) {
643 driver_geo.heads = drv->heads;
644 driver_geo.sectors = drv->sectors;
645 driver_geo.cylinders = drv->cylinders;
646 } else
647 return -ENXIO;
648 driver_geo.start= get_start_sect(inode->i_bdev);
649 if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry)))
650 return -EFAULT;
651 return(0);
652 }
653
654 case CCISS_GETPCIINFO:
655 {
656 cciss_pci_info_struct pciinfo;
657
658 if (!arg) return -EINVAL;
cd6fb584 659 pciinfo.domain = pci_domain_nr(host->pdev->bus);
1da177e4
LT		 660 pciinfo.bus = host->pdev->bus->number;
661 pciinfo.dev_fn = host->pdev->devfn;
662 pciinfo.board_id = host->board_id;
663 if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct )))
664 return -EFAULT;
665 return(0);
666 }
667 case CCISS_GETINTINFO:
668 {
669 cciss_coalint_struct intinfo;
670 if (!arg) return -EINVAL;
671 intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
672 intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
673 if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
674 return -EFAULT;
675 return(0);
676 }
677 case CCISS_SETINTINFO:
678 {
679 cciss_coalint_struct intinfo;
680 unsigned long flags;
681 int i;
682
683 if (!arg) return -EINVAL;
684 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
685 if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
686 return -EFAULT;
687 if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
688
689 {
690// printk("cciss_ioctl: delay and count cannot be 0\n");
691 return( -EINVAL);
692 }
693 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
694 /* Update the field, and then ring the doorbell */
695 writel( intinfo.delay,
696 &(host->cfgtable->HostWrite.CoalIntDelay));
697 writel( intinfo.count,
698 &(host->cfgtable->HostWrite.CoalIntCount));
699 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
700
701 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
702 if (!(readl(host->vaddr + SA5_DOORBELL)
703 & CFGTBL_ChangeReq))
704 break;
705 /* delay and try again */
706 udelay(1000);
707 }
708 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
709 if (i >= MAX_IOCTL_CONFIG_WAIT)
710 return -EAGAIN;
711 return(0);
712 }
713 case CCISS_GETNODENAME:
714 {
715 NodeName_type NodeName;
716 int i;
717
718 if (!arg) return -EINVAL;
719 for(i=0;i<16;i++)
720 NodeName[i] = readb(&host->cfgtable->ServerName[i]);
721 if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
722 return -EFAULT;
723 return(0);
724 }
725 case CCISS_SETNODENAME:
726 {
727 NodeName_type NodeName;
728 unsigned long flags;
729 int i;
730
731 if (!arg) return -EINVAL;
732 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
733
734 if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
735 return -EFAULT;
736
737 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
738
739 /* Update the field, and then ring the doorbell */
740 for(i=0;i<16;i++)
741 writeb( NodeName[i], &host->cfgtable->ServerName[i]);
742
743 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
744
745 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
746 if (!(readl(host->vaddr + SA5_DOORBELL)
747 & CFGTBL_ChangeReq))
748 break;
749 /* delay and try again */
750 udelay(1000);
751 }
752 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
753 if (i >= MAX_IOCTL_CONFIG_WAIT)
754 return -EAGAIN;
755 return(0);
756 }
757
758 case CCISS_GETHEARTBEAT:
759 {
760 Heartbeat_type heartbeat;
761
762 if (!arg) return -EINVAL;
763 heartbeat = readl(&host->cfgtable->HeartBeat);
764 if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
765 return -EFAULT;
766 return(0);
767 }
768 case CCISS_GETBUSTYPES:
769 {
770 BusTypes_type BusTypes;
771
772 if (!arg) return -EINVAL;
773 BusTypes = readl(&host->cfgtable->BusTypes);
774 if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
775 return -EFAULT;
776 return(0);
777 }
778 case CCISS_GETFIRMVER:
779 {
780 FirmwareVer_type firmware;
781
782 if (!arg) return -EINVAL;
783 memcpy(firmware, host->firm_ver, 4);
784
785 if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
786 return -EFAULT;
787 return(0);
788 }
789 case CCISS_GETDRIVVER:
790 {
791 DriverVer_type DriverVer = DRIVER_VERSION;
792
793 if (!arg) return -EINVAL;
794
795 if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
796 return -EFAULT;
797 return(0);
798 }
799
800 case CCISS_REVALIDVOLS:
801 if (bdev != bdev->bd_contains || drv != host->drv)
802 return -ENXIO;
803 return revalidate_allvol(host);
804
805 case CCISS_GETLUNINFO: {
806 LogvolInfo_struct luninfo;
1da177e4
LT		 807
808 luninfo.LunID = drv->LunID;
809 luninfo.num_opens = drv->usage_count;
810 luninfo.num_parts = 0;
1da177e4
LT		 811 if (copy_to_user(argp, &luninfo,
812 sizeof(LogvolInfo_struct)))
813 return -EFAULT;
814 return(0);
815 }
816 case CCISS_DEREGDISK:
817 return deregister_disk(disk);
818
819 case CCISS_REGNEWD:
820 return register_new_disk(host);
821
822 case CCISS_PASSTHRU:
823 {
824 IOCTL_Command_struct iocommand;
825 CommandList_struct *c;
826 char *buff = NULL;
827 u64bit temp64;
828 unsigned long flags;
829 DECLARE_COMPLETION(wait);
830
831 if (!arg) return -EINVAL;
832
833 if (!capable(CAP_SYS_RAWIO)) return -EPERM;
834
835 if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
836 return -EFAULT;
837 if((iocommand.buf_size < 1) &&
838 (iocommand.Request.Type.Direction != XFER_NONE))
839 {
840 return -EINVAL;
841 }
842#if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
843 /* Check kmalloc limits */
844 if(iocommand.buf_size > 128000)
845 return -EINVAL;
846#endif
847 if(iocommand.buf_size > 0)
848 {
849 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
850 if( buff == NULL)
851 return -EFAULT;
852 }
853 if (iocommand.Request.Type.Direction == XFER_WRITE)
854 {
855 /* Copy the data into the buffer we created */
856 if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
857 {
858 kfree(buff);
859 return -EFAULT;
860 }
861 } else {
862 memset(buff, 0, iocommand.buf_size);
863 }
864 if ((c = cmd_alloc(host , 0)) == NULL)
865 {
866 kfree(buff);
867 return -ENOMEM;
868 }
869 // Fill in the command type
870 c->cmd_type = CMD_IOCTL_PEND;
871 // Fill in Command Header
872 c->Header.ReplyQueue = 0; // unused in simple mode
873 if( iocommand.buf_size > 0) // buffer to fill
874 {
875 c->Header.SGList = 1;
876 c->Header.SGTotal= 1;
877 } else // no buffers to fill
878 {
879 c->Header.SGList = 0;
880 c->Header.SGTotal= 0;
881 }
882 c->Header.LUN = iocommand.LUN_info;
883 c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
884
885 // Fill in Request block
886 c->Request = iocommand.Request;
887
888 // Fill in the scatter gather information
889 if (iocommand.buf_size > 0 )
890 {
891 temp64.val = pci_map_single( host->pdev, buff,
892 iocommand.buf_size,
893 PCI_DMA_BIDIRECTIONAL);
894 c->SG[0].Addr.lower = temp64.val32.lower;
895 c->SG[0].Addr.upper = temp64.val32.upper;
896 c->SG[0].Len = iocommand.buf_size;
897 c->SG[0].Ext = 0; // we are not chaining
898 }
899 c->waiting = &wait;
900
901 /* Put the request on the tail of the request queue */
902 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
903 addQ(&host->reqQ, c);
904 host->Qdepth++;
905 start_io(host);
906 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
907
908 wait_for_completion(&wait);
909
910 /* unlock the buffers from DMA */
911 temp64.val32.lower = c->SG[0].Addr.lower;
912 temp64.val32.upper = c->SG[0].Addr.upper;
913 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
914 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
915
916 /* Copy the error information out */
917 iocommand.error_info = *(c->err_info);
918 if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
919 {
920 kfree(buff);
921 cmd_free(host, c, 0);
922 return( -EFAULT);
923 }
924
925 if (iocommand.Request.Type.Direction == XFER_READ)
926 {
927 /* Copy the data out of the buffer we created */
928 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
929 {
930 kfree(buff);
931 cmd_free(host, c, 0);
932 return -EFAULT;
933 }
934 }
935 kfree(buff);
936 cmd_free(host, c, 0);
937 return(0);
938 }
939 case CCISS_BIG_PASSTHRU: {
940 BIG_IOCTL_Command_struct *ioc;
941 CommandList_struct *c;
942 unsigned char **buff = NULL;
943 int *buff_size = NULL;
944 u64bit temp64;
945 unsigned long flags;
946 BYTE sg_used = 0;
947 int status = 0;
948 int i;
949 DECLARE_COMPLETION(wait);
950 __u32 left;
951 __u32 sz;
952 BYTE __user *data_ptr;
953
954 if (!arg)
955 return -EINVAL;
956 if (!capable(CAP_SYS_RAWIO))
957 return -EPERM;
958 ioc = (BIG_IOCTL_Command_struct *)
959 kmalloc(sizeof(*ioc), GFP_KERNEL);
960 if (!ioc) {
961 status = -ENOMEM;
962 goto cleanup1;
963 }
964 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
965 status = -EFAULT;
966 goto cleanup1;
967 }
968 if ((ioc->buf_size < 1) &&
969 (ioc->Request.Type.Direction != XFER_NONE)) {
970 status = -EINVAL;
971 goto cleanup1;
972 }
973 /* Check kmalloc limits using all SGs */
974 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
975 status = -EINVAL;
976 goto cleanup1;
977 }
978 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
979 status = -EINVAL;
980 goto cleanup1;
981 }
982 buff = (unsigned char **) kmalloc(MAXSGENTRIES *
983 sizeof(char *), GFP_KERNEL);
984 if (!buff) {
985 status = -ENOMEM;
986 goto cleanup1;
987 }
988 memset(buff, 0, MAXSGENTRIES);
989 buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
990 GFP_KERNEL);
991 if (!buff_size) {
992 status = -ENOMEM;
993 goto cleanup1;
994 }
995 left = ioc->buf_size;
996 data_ptr = ioc->buf;
997 while (left) {
998 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
999 buff_size[sg_used] = sz;
1000 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
1001 if (buff[sg_used] == NULL) {
1002 status = -ENOMEM;
1003 goto cleanup1;
1004 }
1005 if (ioc->Request.Type.Direction == XFER_WRITE &&
1006 copy_from_user(buff[sg_used], data_ptr, sz)) {
1007 status = -ENOMEM;
1008 goto cleanup1;
1009 } else {
1010 memset(buff[sg_used], 0, sz);
1011 }
1012 left -= sz;
1013 data_ptr += sz;
1014 sg_used++;
1015 }
1016 if ((c = cmd_alloc(host , 0)) == NULL) {
1017 status = -ENOMEM;
1018 goto cleanup1;
1019 }
1020 c->cmd_type = CMD_IOCTL_PEND;
1021 c->Header.ReplyQueue = 0;
1022
1023 if( ioc->buf_size > 0) {
1024 c->Header.SGList = sg_used;
1025 c->Header.SGTotal= sg_used;
1026 } else {
1027 c->Header.SGList = 0;
1028 c->Header.SGTotal= 0;
1029 }
1030 c->Header.LUN = ioc->LUN_info;
1031 c->Header.Tag.lower = c->busaddr;
1032
1033 c->Request = ioc->Request;
1034 if (ioc->buf_size > 0 ) {
1035 int i;
1036 for(i=0; i<sg_used; i++) {
1037 temp64.val = pci_map_single( host->pdev, buff[i],
1038 buff_size[i],
1039 PCI_DMA_BIDIRECTIONAL);
1040 c->SG[i].Addr.lower = temp64.val32.lower;
1041 c->SG[i].Addr.upper = temp64.val32.upper;
1042 c->SG[i].Len = buff_size[i];
1043 c->SG[i].Ext = 0; /* we are not chaining */
1044 }
1045 }
1046 c->waiting = &wait;
1047 /* Put the request on the tail of the request queue */
1048 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1049 addQ(&host->reqQ, c);
1050 host->Qdepth++;
1051 start_io(host);
1052 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1053 wait_for_completion(&wait);
1054 /* unlock the buffers from DMA */
1055 for(i=0; i<sg_used; i++) {
1056 temp64.val32.lower = c->SG[i].Addr.lower;
1057 temp64.val32.upper = c->SG[i].Addr.upper;
1058 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
1059 buff_size[i], PCI_DMA_BIDIRECTIONAL);
1060 }
1061 /* Copy the error information out */
1062 ioc->error_info = *(c->err_info);
1063 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1064 cmd_free(host, c, 0);
1065 status = -EFAULT;
1066 goto cleanup1;
1067 }
1068 if (ioc->Request.Type.Direction == XFER_READ) {
1069 /* Copy the data out of the buffer we created */
1070 BYTE __user *ptr = ioc->buf;
1071 for(i=0; i< sg_used; i++) {
1072 if (copy_to_user(ptr, buff[i], buff_size[i])) {
1073 cmd_free(host, c, 0);
1074 status = -EFAULT;
1075 goto cleanup1;
1076 }
1077 ptr += buff_size[i];
1078 }
1079 }
1080 cmd_free(host, c, 0);
1081 status = 0;
1082cleanup1:
1083 if (buff) {
1084 for(i=0; i<sg_used; i++)
1085 if(buff[i] != NULL)
1086 kfree(buff[i]);
1087 kfree(buff);
1088 }
1089 if (buff_size)
1090 kfree(buff_size);
1091 if (ioc)
1092 kfree(ioc);
1093 return(status);
1094 }
1095 default:
1096 return -ENOTTY;
1097 }
1098
1099}
1100
1101/*
1102 * revalidate_allvol is for online array config utilities. After a
1103 * utility reconfigures the drives in the array, it can use this function
1104 * (through an ioctl) to make the driver zap any previous disk structs for
1105 * that controller and get new ones.
1106 *
1107 * Right now I'm using the getgeometry() function to do this, but this
1108 * function should probably be finer grained and allow you to revalidate one
1109 * particualar logical volume (instead of all of them on a particular
1110 * controller).
1111 */
1112static int revalidate_allvol(ctlr_info_t *host)
1113{
1114 int ctlr = host->ctlr, i;
1115 unsigned long flags;
1116
1117 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1118 if (host->usage_count > 1) {
1119 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1120 printk(KERN_WARNING "cciss: Device busy for volume"
1121 " revalidation (usage=%d)\n", host->usage_count);
1122 return -EBUSY;
1123 }
1124 host->usage_count++;
1125 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1126
1127 for(i=0; i< NWD; i++) {
1128 struct gendisk *disk = host->gendisk[i];
1129 if (disk->flags & GENHD_FL_UP)
1130 del_gendisk(disk);
1131 }
1132
1133 /*
1134 * Set the partition and block size structures for all volumes
1135 * on this controller to zero. We will reread all of this data
1136 */
1137 memset(host->drv, 0, sizeof(drive_info_struct)
1138 * CISS_MAX_LUN);
1139 /*
1140 * Tell the array controller not to give us any interrupts while
1141 * we check the new geometry. Then turn interrupts back on when
1142 * we're done.
1143 */
1144 host->access.set_intr_mask(host, CCISS_INTR_OFF);
1145 cciss_getgeometry(ctlr);
1146 host->access.set_intr_mask(host, CCISS_INTR_ON);
1147
1148 /* Loop through each real device */
1149 for (i = 0; i < NWD; i++) {
1150 struct gendisk *disk = host->gendisk[i];
1151 drive_info_struct *drv = &(host->drv[i]);
1152 /* we must register the controller even if no disks exist */
1153 /* this is for the online array utilities */
1154 if (!drv->heads && i)
1155 continue;
ad2b9312 1156 blk_queue_hardsect_size(drv->queue, drv->block_size);
1da177e4
LT		 1157 set_capacity(disk, drv->nr_blocks);
1158 add_disk(disk);
1159 }
1160 host->usage_count--;
1161 return 0;
1162}
1163
1164static int deregister_disk(struct gendisk *disk)
1165{
1166 unsigned long flags;
1167 ctlr_info_t *h = get_host(disk);
1168 drive_info_struct *drv = get_drv(disk);
1169 int ctlr = h->ctlr;
1170
1171 if (!capable(CAP_SYS_RAWIO))
1172 return -EPERM;
1173
1174 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1175 /* make sure logical volume is NOT is use */
1176 if( drv->usage_count > 1) {
1177 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1178 return -EBUSY;
1179 }
1180 drv->usage_count++;
1181 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1182
1183 /* invalidate the devices and deregister the disk */
1184 if (disk->flags & GENHD_FL_UP)
1185 del_gendisk(disk);
1186 /* check to see if it was the last disk */
1187 if (drv == h->drv + h->highest_lun) {
1188 /* if so, find the new hightest lun */
1189 int i, newhighest =-1;
1190 for(i=0; i<h->highest_lun; i++) {
1191 /* if the disk has size > 0, it is available */
1192 if (h->drv[i].nr_blocks)
1193 newhighest = i;
1194 }
1195 h->highest_lun = newhighest;
1196
1197 }
1198 --h->num_luns;
1199 /* zero out the disk size info */
1200 drv->nr_blocks = 0;
1201 drv->block_size = 0;
1202 drv->cylinders = 0;
1203 drv->LunID = 0;
1204 return(0);
1205}
1206static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
1207 size_t size,
1208 unsigned int use_unit_num, /* 0: address the controller,
1209 1: address logical volume log_unit,
1210 2: periph device address is scsi3addr */
1211 unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
1212 int cmd_type)
1213{
1214 ctlr_info_t *h= hba[ctlr];
1215 u64bit buff_dma_handle;
1216 int status = IO_OK;
1217
1218 c->cmd_type = CMD_IOCTL_PEND;
1219 c->Header.ReplyQueue = 0;
1220 if( buff != NULL) {
1221 c->Header.SGList = 1;
1222 c->Header.SGTotal= 1;
1223 } else {
1224 c->Header.SGList = 0;
1225 c->Header.SGTotal= 0;
1226 }
1227 c->Header.Tag.lower = c->busaddr;
1228
1229 c->Request.Type.Type = cmd_type;
1230 if (cmd_type == TYPE_CMD) {
1231 switch(cmd) {
1232 case CISS_INQUIRY:
1233 /* If the logical unit number is 0 then, this is going
1234 to controller so It's a physical command
1235 mode = 0 target = 0. So we have nothing to write.
1236 otherwise, if use_unit_num == 1,
1237 mode = 1(volume set addressing) target = LUNID
1238 otherwise, if use_unit_num == 2,
1239 mode = 0(periph dev addr) target = scsi3addr */
1240 if (use_unit_num == 1) {
1241 c->Header.LUN.LogDev.VolId=
1242 h->drv[log_unit].LunID;
1243 c->Header.LUN.LogDev.Mode = 1;
1244 } else if (use_unit_num == 2) {
1245 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
1246 c->Header.LUN.LogDev.Mode = 0;
1247 }
1248 /* are we trying to read a vital product page */
1249 if(page_code != 0) {
1250 c->Request.CDB[1] = 0x01;
1251 c->Request.CDB[2] = page_code;
1252 }
1253 c->Request.CDBLen = 6;
1254 c->Request.Type.Attribute = ATTR_SIMPLE;
1255 c->Request.Type.Direction = XFER_READ;
1256 c->Request.Timeout = 0;
1257 c->Request.CDB[0] = CISS_INQUIRY;
1258 c->Request.CDB[4] = size & 0xFF;
1259 break;
1260 case CISS_REPORT_LOG:
1261 case CISS_REPORT_PHYS:
1262 /* Talking to controller so It's a physical command
1263 mode = 00 target = 0. Nothing to write.
1264 */
1265 c->Request.CDBLen = 12;
1266 c->Request.Type.Attribute = ATTR_SIMPLE;
1267 c->Request.Type.Direction = XFER_READ;
1268 c->Request.Timeout = 0;
1269 c->Request.CDB[0] = cmd;
1270 c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
1271 c->Request.CDB[7] = (size >> 16) & 0xFF;
1272 c->Request.CDB[8] = (size >> 8) & 0xFF;
1273 c->Request.CDB[9] = size & 0xFF;
1274 break;
1275
1276 case CCISS_READ_CAPACITY:
1277 c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1278 c->Header.LUN.LogDev.Mode = 1;
1279 c->Request.CDBLen = 10;
1280 c->Request.Type.Attribute = ATTR_SIMPLE;
1281 c->Request.Type.Direction = XFER_READ;
1282 c->Request.Timeout = 0;
1283 c->Request.CDB[0] = cmd;
1284 break;
1285 case CCISS_CACHE_FLUSH:
1286 c->Request.CDBLen = 12;
1287 c->Request.Type.Attribute = ATTR_SIMPLE;
1288 c->Request.Type.Direction = XFER_WRITE;
1289 c->Request.Timeout = 0;
1290 c->Request.CDB[0] = BMIC_WRITE;
1291 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1292 break;
1293 default:
1294 printk(KERN_WARNING
1295 "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
1296 return(IO_ERROR);
1297 }
1298 } else if (cmd_type == TYPE_MSG) {
1299 switch (cmd) {
1300 case 3: /* No-Op message */
1301 c->Request.CDBLen = 1;
1302 c->Request.Type.Attribute = ATTR_SIMPLE;
1303 c->Request.Type.Direction = XFER_WRITE;
1304 c->Request.Timeout = 0;
1305 c->Request.CDB[0] = cmd;
1306 break;
1307 default:
1308 printk(KERN_WARNING
1309 "cciss%d: unknown message type %d\n",
1310 ctlr, cmd);
1311 return IO_ERROR;
1312 }
1313 } else {
1314 printk(KERN_WARNING
1315 "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1316 return IO_ERROR;
1317 }
1318 /* Fill in the scatter gather information */
1319 if (size > 0) {
1320 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1321 buff, size, PCI_DMA_BIDIRECTIONAL);
1322 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1323 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1324 c->SG[0].Len = size;
1325 c->SG[0].Ext = 0; /* we are not chaining */
1326 }
1327 return status;
1328}
1329static int sendcmd_withirq(__u8 cmd,
1330 int ctlr,
1331 void *buff,
1332 size_t size,
1333 unsigned int use_unit_num,
1334 unsigned int log_unit,
1335 __u8 page_code,
1336 int cmd_type)
1337{
1338 ctlr_info_t *h = hba[ctlr];
1339 CommandList_struct *c;
1340 u64bit buff_dma_handle;
1341 unsigned long flags;
1342 int return_status;
1343 DECLARE_COMPLETION(wait);
1344
1345 if ((c = cmd_alloc(h , 0)) == NULL)
1346 return -ENOMEM;
1347 return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1348 log_unit, page_code, NULL, cmd_type);
1349 if (return_status != IO_OK) {
1350 cmd_free(h, c, 0);
1351 return return_status;
1352 }
1353resend_cmd2:
1354 c->waiting = &wait;
1355
1356 /* Put the request on the tail of the queue and send it */
1357 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1358 addQ(&h->reqQ, c);
1359 h->Qdepth++;
1360 start_io(h);
1361 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1362
1363 wait_for_completion(&wait);
1364
1365 if(c->err_info->CommandStatus != 0)
1366 { /* an error has occurred */
1367 switch(c->err_info->CommandStatus)
1368 {
1369 case CMD_TARGET_STATUS:
1370 printk(KERN_WARNING "cciss: cmd %p has "
1371 " completed with errors\n", c);
1372 if( c->err_info->ScsiStatus)
1373 {
1374 printk(KERN_WARNING "cciss: cmd %p "
1375 "has SCSI Status = %x\n",
1376 c,
1377 c->err_info->ScsiStatus);
1378 }
1379
1380 break;
1381 case CMD_DATA_UNDERRUN:
1382 case CMD_DATA_OVERRUN:
1383 /* expected for inquire and report lun commands */
1384 break;
1385 case CMD_INVALID:
1386 printk(KERN_WARNING "cciss: Cmd %p is "
1387 "reported invalid\n", c);
1388 return_status = IO_ERROR;
1389 break;
1390 case CMD_PROTOCOL_ERR:
1391 printk(KERN_WARNING "cciss: cmd %p has "
1392 "protocol error \n", c);
1393 return_status = IO_ERROR;
1394 break;
1395case CMD_HARDWARE_ERR:
1396 printk(KERN_WARNING "cciss: cmd %p had "
1397 " hardware error\n", c);
1398 return_status = IO_ERROR;
1399 break;
1400 case CMD_CONNECTION_LOST:
1401 printk(KERN_WARNING "cciss: cmd %p had "
1402 "connection lost\n", c);
1403 return_status = IO_ERROR;
1404 break;
1405 case CMD_ABORTED:
1406 printk(KERN_WARNING "cciss: cmd %p was "
1407 "aborted\n", c);
1408 return_status = IO_ERROR;
1409 break;
1410 case CMD_ABORT_FAILED:
1411 printk(KERN_WARNING "cciss: cmd %p reports "
1412 "abort failed\n", c);
1413 return_status = IO_ERROR;
1414 break;
1415 case CMD_UNSOLICITED_ABORT:
1416 printk(KERN_WARNING
1417 "cciss%d: unsolicited abort %p\n",
1418 ctlr, c);
1419 if (c->retry_count < MAX_CMD_RETRIES) {
1420 printk(KERN_WARNING
1421 "cciss%d: retrying %p\n",
1422 ctlr, c);
1423 c->retry_count++;
1424 /* erase the old error information */
1425 memset(c->err_info, 0,
1426 sizeof(ErrorInfo_struct));
1427 return_status = IO_OK;
1428 INIT_COMPLETION(wait);
1429 goto resend_cmd2;
1430 }
1431 return_status = IO_ERROR;
1432 break;
1433 default:
1434 printk(KERN_WARNING "cciss: cmd %p returned "
1435 "unknown status %x\n", c,
1436 c->err_info->CommandStatus);
1437 return_status = IO_ERROR;
1438 }
1439 }
1440 /* unlock the buffers from DMA */
1441 pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1442 size, PCI_DMA_BIDIRECTIONAL);
1443 cmd_free(h, c, 0);
1444 return(return_status);
1445
1446}
1447static void cciss_geometry_inquiry(int ctlr, int logvol,
1448 int withirq, unsigned int total_size,
1449 unsigned int block_size, InquiryData_struct *inq_buff,
1450 drive_info_struct *drv)
1451{
1452 int return_code;
1453 memset(inq_buff, 0, sizeof(InquiryData_struct));
1454 if (withirq)
1455 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1456 inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1457 else
1458 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1459 sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1460 if (return_code == IO_OK) {
1461 if(inq_buff->data_byte[8] == 0xFF) {
1462 printk(KERN_WARNING
1463 "cciss: reading geometry failed, volume "
1464 "does not support reading geometry\n");
1465 drv->block_size = block_size;
1466 drv->nr_blocks = total_size;
1467 drv->heads = 255;
1468 drv->sectors = 32; // Sectors per track
1469 drv->cylinders = total_size / 255 / 32;
1470 } else {
1471 unsigned int t;
1472
1473 drv->block_size = block_size;
1474 drv->nr_blocks = total_size;
1475 drv->heads = inq_buff->data_byte[6];
1476 drv->sectors = inq_buff->data_byte[7];
1477 drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1478 drv->cylinders += inq_buff->data_byte[5];
1479 drv->raid_level = inq_buff->data_byte[8];
1480 t = drv->heads * drv->sectors;
1481 if (t > 1) {
1482 drv->cylinders = total_size/t;
1483 }
1484 }
1485 } else { /* Get geometry failed */
1486 printk(KERN_WARNING "cciss: reading geometry failed\n");
1487 }
1488 printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
1489 drv->heads, drv->sectors, drv->cylinders);
1490}
1491static void
1492cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1493 int withirq, unsigned int *total_size, unsigned int *block_size)
1494{
1495 int return_code;
1496 memset(buf, 0, sizeof(*buf));
1497 if (withirq)
1498 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1499 ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1500 else
1501 return_code = sendcmd(CCISS_READ_CAPACITY,
1502 ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1503 if (return_code == IO_OK) {
1504 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1505 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1506 } else { /* read capacity command failed */
1507 printk(KERN_WARNING "cciss: read capacity failed\n");
1508 *total_size = 0;
1509 *block_size = BLOCK_SIZE;
1510 }
1511 printk(KERN_INFO " blocks= %u block_size= %d\n",
1512 *total_size, *block_size);
1513 return;
1514}
1515
1516static int register_new_disk(ctlr_info_t *h)
1517{
1518 struct gendisk *disk;
1519 int ctlr = h->ctlr;
1520 int i;
1521 int num_luns;
1522 int logvol;
1523 int new_lun_found = 0;
1524 int new_lun_index = 0;
1525 int free_index_found = 0;
1526 int free_index = 0;
1527 ReportLunData_struct *ld_buff = NULL;
1528 ReadCapdata_struct *size_buff = NULL;
1529 InquiryData_struct *inq_buff = NULL;
1530 int return_code;
1531 int listlength = 0;
1532 __u32 lunid = 0;
1533 unsigned int block_size;
1534 unsigned int total_size;
1535
1536 if (!capable(CAP_SYS_RAWIO))
1537 return -EPERM;
1538 /* if we have no space in our disk array left to add anything */
1539 if( h->num_luns >= CISS_MAX_LUN)
1540 return -EINVAL;
1541
1542 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1543 if (ld_buff == NULL)
1544 goto mem_msg;
1545 memset(ld_buff, 0, sizeof(ReportLunData_struct));
1546 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1547 if (size_buff == NULL)
1548 goto mem_msg;
1549 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1550 if (inq_buff == NULL)
1551 goto mem_msg;
1552
1553 return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1554 sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);
1555
1556 if( return_code == IO_OK)
1557 {
1558
1559 // printk("LUN Data\n--------------------------\n");
1560
1561 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
1562 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
1563 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
1564 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1565 } else /* reading number of logical volumes failed */
1566 {
1567 printk(KERN_WARNING "cciss: report logical volume"
1568 " command failed\n");
1569 listlength = 0;
1570 goto free_err;
1571 }
1572 num_luns = listlength / 8; // 8 bytes pre entry
1573 if (num_luns > CISS_MAX_LUN)
1574 {
1575 num_luns = CISS_MAX_LUN;
1576 }
1577#ifdef CCISS_DEBUG
1578 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
1579 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
1580 ld_buff->LUNListLength[3], num_luns);
1581#endif
1582 for(i=0; i< num_luns; i++)
1583 {
1584 int j;
1585 int lunID_found = 0;
1586
1587 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
1588 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
1589 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
1590 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1591
1592 /* check to see if this is a new lun */
1593 for(j=0; j <= h->highest_lun; j++)
1594 {
1595#ifdef CCISS_DEBUG
1596 printk("Checking %d %x against %x\n", j,h->drv[j].LunID,
1597 lunid);
1598#endif /* CCISS_DEBUG */
1599 if (h->drv[j].LunID == lunid)
1600 {
1601 lunID_found = 1;
1602 break;
1603 }
1604
1605 }
1606 if( lunID_found == 1)
1607 continue;
1608 else
1609 { /* It is the new lun we have been looking for */
1610#ifdef CCISS_DEBUG
1611 printk("new lun found at %d\n", i);
1612#endif /* CCISS_DEBUG */
1613 new_lun_index = i;
1614 new_lun_found = 1;
1615 break;
1616 }
1617 }
1618 if (!new_lun_found)
1619 {
1620 printk(KERN_WARNING "cciss: New Logical Volume not found\n");
1621 goto free_err;
1622 }
1623 /* Now find the free index */
1624 for(i=0; i <CISS_MAX_LUN; i++)
1625 {
1626#ifdef CCISS_DEBUG
1627 printk("Checking Index %d\n", i);
1628#endif /* CCISS_DEBUG */
1629 if(h->drv[i].LunID == 0)
1630 {
1631#ifdef CCISS_DEBUG
1632 printk("free index found at %d\n", i);
1633#endif /* CCISS_DEBUG */
1634 free_index_found = 1;
1635 free_index = i;
1636 break;
1637 }
1638 }
1639 if (!free_index_found)
1640 {
1641 printk(KERN_WARNING "cciss: unable to find free slot for disk\n");
1642 goto free_err;
1643 }
1644
1645 logvol = free_index;
1646 h->drv[logvol].LunID = lunid;
1647 /* there could be gaps in lun numbers, track hightest */
1648 if(h->highest_lun < lunid)
1649 h->highest_lun = logvol;
1650 cciss_read_capacity(ctlr, logvol, size_buff, 1,
1651 &total_size, &block_size);
1652 cciss_geometry_inquiry(ctlr, logvol, 1, total_size, block_size,
1653 inq_buff, &h->drv[logvol]);
1654 h->drv[logvol].usage_count = 0;
1655 ++h->num_luns;
1656 /* setup partitions per disk */
1657 disk = h->gendisk[logvol];
1658 set_capacity(disk, h->drv[logvol].nr_blocks);
1659 /* if it's the controller it's already added */
1660 if(logvol)
1661 add_disk(disk);
1662freeret:
1663 kfree(ld_buff);
1664 kfree(size_buff);
1665 kfree(inq_buff);
1666 return (logvol);
1667mem_msg:
1668 printk(KERN_ERR "cciss: out of memory\n");
1669free_err:
1670 logvol = -1;
1671 goto freeret;
1672}
1673
1674static int cciss_revalidate(struct gendisk *disk)
1675{
1676 ctlr_info_t *h = get_host(disk);
1677 drive_info_struct *drv = get_drv(disk);
1678 int logvol;
1679 int FOUND=0;
1680 unsigned int block_size;
1681 unsigned int total_size;
1682 ReadCapdata_struct *size_buff = NULL;
1683 InquiryData_struct *inq_buff = NULL;
1684
1685 for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1686 {
1687 if(h->drv[logvol].LunID == drv->LunID) {
1688 FOUND=1;
1689 break;
1690 }
1691 }
1692
1693 if (!FOUND) return 1;
1694
1695 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1696 if (size_buff == NULL)
1697 {
1698 printk(KERN_WARNING "cciss: out of memory\n");
1699 return 1;
1700 }
1701 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1702 if (inq_buff == NULL)
1703 {
1704 printk(KERN_WARNING "cciss: out of memory\n");
1705 kfree(size_buff);
1706 return 1;
1707 }
1708
1709 cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1710 cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1711
ad2b9312 1712 blk_queue_hardsect_size(drv->queue, drv->block_size);
1da177e4
LT		 1713 set_capacity(disk, drv->nr_blocks);
1714
1715 kfree(size_buff);
1716 kfree(inq_buff);
1717 return 0;
1718}
1719
1720/*
1721 * Wait polling for a command to complete.
1722 * The memory mapped FIFO is polled for the completion.
1723 * Used only at init time, interrupts from the HBA are disabled.
1724 */
1725static unsigned long pollcomplete(int ctlr)
1726{
1727 unsigned long done;
1728 int i;
1729
1730 /* Wait (up to 20 seconds) for a command to complete */
1731
1732 for (i = 20 * HZ; i > 0; i--) {
1733 done = hba[ctlr]->access.command_completed(hba[ctlr]);
86e84862
NA		 1734 if (done == FIFO_EMPTY)
1735 schedule_timeout_uninterruptible(1);
1736 else
1da177e4
LT		 1737 return (done);
1738 }
1739 /* Invalid address to tell caller we ran out of time */
1740 return 1;
1741}
1742/*
1743 * Send a command to the controller, and wait for it to complete.
1744 * Only used at init time.
1745 */
1746static int sendcmd(
1747 __u8 cmd,
1748 int ctlr,
1749 void *buff,
1750 size_t size,
1751 unsigned int use_unit_num, /* 0: address the controller,
1752 1: address logical volume log_unit,
1753 2: periph device address is scsi3addr */
1754 unsigned int log_unit,
1755 __u8 page_code,
1756 unsigned char *scsi3addr,
1757 int cmd_type)
1758{
1759 CommandList_struct *c;
1760 int i;
1761 unsigned long complete;
1762 ctlr_info_t *info_p= hba[ctlr];
1763 u64bit buff_dma_handle;
1764 int status;
1765
1766 if ((c = cmd_alloc(info_p, 1)) == NULL) {
1767 printk(KERN_WARNING "cciss: unable to get memory");
1768 return(IO_ERROR);
1769 }
1770 status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1771 log_unit, page_code, scsi3addr, cmd_type);
1772 if (status != IO_OK) {
1773 cmd_free(info_p, c, 1);
1774 return status;
1775 }
1776resend_cmd1:
1777 /*
1778 * Disable interrupt
1779 */
1780#ifdef CCISS_DEBUG
1781 printk(KERN_DEBUG "cciss: turning intr off\n");
1782#endif /* CCISS_DEBUG */
1783 info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1784
1785 /* Make sure there is room in the command FIFO */
1786 /* Actually it should be completely empty at this time. */
1787 for (i = 200000; i > 0; i--)
1788 {
1789 /* if fifo isn't full go */
1790 if (!(info_p->access.fifo_full(info_p)))
1791 {
1792
1793 break;
1794 }
1795 udelay(10);
1796 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
1797 " waiting!\n", ctlr);
1798 }
1799 /*
1800 * Send the cmd
1801 */
1802 info_p->access.submit_command(info_p, c);
1803 complete = pollcomplete(ctlr);
1804
1805#ifdef CCISS_DEBUG
1806 printk(KERN_DEBUG "cciss: command completed\n");
1807#endif /* CCISS_DEBUG */
1808
1809 if (complete != 1) {
1810 if ( (complete & CISS_ERROR_BIT)
1811 && (complete & ~CISS_ERROR_BIT) == c->busaddr)
1812 {
1813 /* if data overrun or underun on Report command
1814 ignore it
1815 */
1816 if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
1817 (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
1818 (c->Request.CDB[0] == CISS_INQUIRY)) &&
1819 ((c->err_info->CommandStatus ==
1820 CMD_DATA_OVERRUN) ||
1821 (c->err_info->CommandStatus ==
1822 CMD_DATA_UNDERRUN)
1823 ))
1824 {
1825 complete = c->busaddr;
1826 } else {
1827 if (c->err_info->CommandStatus ==
1828 CMD_UNSOLICITED_ABORT) {
1829 printk(KERN_WARNING "cciss%d: "
1830 "unsolicited abort %p\n",
1831 ctlr, c);
1832 if (c->retry_count < MAX_CMD_RETRIES) {
1833 printk(KERN_WARNING
1834 "cciss%d: retrying %p\n",
1835 ctlr, c);
1836 c->retry_count++;
1837 /* erase the old error */
1838 /* information */
1839 memset(c->err_info, 0,
1840 sizeof(ErrorInfo_struct));
1841 goto resend_cmd1;
1842 } else {
1843 printk(KERN_WARNING
1844 "cciss%d: retried %p too "
1845 "many times\n", ctlr, c);
1846 status = IO_ERROR;
1847 goto cleanup1;
1848 }
1849 }
1850 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1851 " Error %x \n", ctlr,
1852 c->err_info->CommandStatus);
1853 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1854 " offensive info\n"
1855 " size %x\n num %x value %x\n", ctlr,
1856 c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
1857 c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
1858 c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
1859 status = IO_ERROR;
1860 goto cleanup1;
1861 }
1862 }
1863 if (complete != c->busaddr) {
1864 printk( KERN_WARNING "cciss cciss%d: SendCmd "
1865 "Invalid command list address returned! (%lx)\n",
1866 ctlr, complete);
1867 status = IO_ERROR;
1868 goto cleanup1;
1869 }
1870 } else {
1871 printk( KERN_WARNING
1872 "cciss cciss%d: SendCmd Timeout out, "
1873 "No command list address returned!\n",
1874 ctlr);
1875 status = IO_ERROR;
1876 }
1877
1878cleanup1:
1879 /* unlock the data buffer from DMA */
1880 pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
1881 size, PCI_DMA_BIDIRECTIONAL);
1882 cmd_free(info_p, c, 1);
1883 return (status);
1884}
1885/*
1886 * Map (physical) PCI mem into (virtual) kernel space
1887 */
1888static void __iomem *remap_pci_mem(ulong base, ulong size)
1889{
1890 ulong page_base = ((ulong) base) & PAGE_MASK;
1891 ulong page_offs = ((ulong) base) - page_base;
1892 void __iomem *page_remapped = ioremap(page_base, page_offs+size);
1893
1894 return page_remapped ? (page_remapped + page_offs) : NULL;
1895}
1896
1897/*
1898 * Takes jobs of the Q and sends them to the hardware, then puts it on
1899 * the Q to wait for completion.
1900 */
1901static void start_io( ctlr_info_t *h)
1902{
1903 CommandList_struct *c;
1904
1905 while(( c = h->reqQ) != NULL )
1906 {
1907 /* can't do anything if fifo is full */
1908 if ((h->access.fifo_full(h))) {
1909 printk(KERN_WARNING "cciss: fifo full\n");
1910 break;
1911 }
1912
1913 /* Get the frist entry from the Request Q */
1914 removeQ(&(h->reqQ), c);
1915 h->Qdepth--;
1916
1917 /* Tell the controller execute command */
1918 h->access.submit_command(h, c);
1919
1920 /* Put job onto the completed Q */
1921 addQ (&(h->cmpQ), c);
1922 }
1923}
1924
1925static inline void complete_buffers(struct bio *bio, int status)
1926{
1927 while (bio) {
1928 struct bio *xbh = bio->bi_next;
1929 int nr_sectors = bio_sectors(bio);
1930
1931 bio->bi_next = NULL;
1932 blk_finished_io(len);
1933 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
1934 bio = xbh;
1935 }
1936
1937}
1938/* Assumes that CCISS_LOCK(h->ctlr) is held. */
1939/* Zeros out the error record and then resends the command back */
1940/* to the controller */
1941static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
1942{
1943 /* erase the old error information */
1944 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
1945
1946 /* add it to software queue and then send it to the controller */
1947 addQ(&(h->reqQ),c);
1948 h->Qdepth++;
1949 if(h->Qdepth > h->maxQsinceinit)
1950 h->maxQsinceinit = h->Qdepth;
1951
1952 start_io(h);
1953}
1954/* checks the status of the job and calls complete buffers to mark all
1955 * buffers for the completed job.
1956 */
1957static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
1958 int timeout)
1959{
1960 int status = 1;
1961 int i;
1962 int retry_cmd = 0;
1963 u64bit temp64;
1964
1965 if (timeout)
1966 status = 0;
1967
1968 if(cmd->err_info->CommandStatus != 0)
1969 { /* an error has occurred */
1970 switch(cmd->err_info->CommandStatus)
1971 {
1972 unsigned char sense_key;
1973 case CMD_TARGET_STATUS:
1974 status = 0;
1975
1976 if( cmd->err_info->ScsiStatus == 0x02)
1977 {
1978 printk(KERN_WARNING "cciss: cmd %p "
1979 "has CHECK CONDITION "
1980 " byte 2 = 0x%x\n", cmd,
1981 cmd->err_info->SenseInfo[2]
1982 );
1983 /* check the sense key */
1984 sense_key = 0xf &
1985 cmd->err_info->SenseInfo[2];
1986 /* no status or recovered error */
1987 if((sense_key == 0x0) ||
1988 (sense_key == 0x1))
1989 {
1990 status = 1;
1991 }
1992 } else
1993 {
1994 printk(KERN_WARNING "cciss: cmd %p "
1995 "has SCSI Status 0x%x\n",
1996 cmd, cmd->err_info->ScsiStatus);
1997 }
1998 break;
1999 case CMD_DATA_UNDERRUN:
2000 printk(KERN_WARNING "cciss: cmd %p has"
2001 " completed with data underrun "
2002 "reported\n", cmd);
2003 break;
2004 case CMD_DATA_OVERRUN:
2005 printk(KERN_WARNING "cciss: cmd %p has"
2006 " completed with data overrun "
2007 "reported\n", cmd);
2008 break;
2009 case CMD_INVALID:
2010 printk(KERN_WARNING "cciss: cmd %p is "
2011 "reported invalid\n", cmd);
2012 status = 0;
2013 break;
2014 case CMD_PROTOCOL_ERR:
2015 printk(KERN_WARNING "cciss: cmd %p has "
2016 "protocol error \n", cmd);
2017 status = 0;
2018 break;
2019 case CMD_HARDWARE_ERR:
2020 printk(KERN_WARNING "cciss: cmd %p had "
2021 " hardware error\n", cmd);
2022 status = 0;
2023 break;
2024 case CMD_CONNECTION_LOST:
2025 printk(KERN_WARNING "cciss: cmd %p had "
2026 "connection lost\n", cmd);
2027 status=0;
2028 break;
2029 case CMD_ABORTED:
2030 printk(KERN_WARNING "cciss: cmd %p was "
2031 "aborted\n", cmd);
2032 status=0;
2033 break;
2034 case CMD_ABORT_FAILED:
2035 printk(KERN_WARNING "cciss: cmd %p reports "
2036 "abort failed\n", cmd);
2037 status=0;
2038 break;
2039 case CMD_UNSOLICITED_ABORT:
2040 printk(KERN_WARNING "cciss%d: unsolicited "
2041 "abort %p\n", h->ctlr, cmd);
2042 if (cmd->retry_count < MAX_CMD_RETRIES) {
2043 retry_cmd=1;
2044 printk(KERN_WARNING
2045 "cciss%d: retrying %p\n",
2046 h->ctlr, cmd);
2047 cmd->retry_count++;
2048 } else
2049 printk(KERN_WARNING
2050 "cciss%d: %p retried too "
2051 "many times\n", h->ctlr, cmd);
2052 status=0;
2053 break;
2054 case CMD_TIMEOUT:
2055 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2056 cmd);
2057 status=0;
2058 break;
2059 default:
2060 printk(KERN_WARNING "cciss: cmd %p returned "
2061 "unknown status %x\n", cmd,
2062 cmd->err_info->CommandStatus);
2063 status=0;
2064 }
2065 }
2066 /* We need to return this command */
2067 if(retry_cmd) {
2068 resend_cciss_cmd(h,cmd);
2069 return;
2070 }
2071 /* command did not need to be retried */
2072 /* unmap the DMA mapping for all the scatter gather elements */
2073 for(i=0; i<cmd->Header.SGList; i++) {
2074 temp64.val32.lower = cmd->SG[i].Addr.lower;
2075 temp64.val32.upper = cmd->SG[i].Addr.upper;
2076 pci_unmap_page(hba[cmd->ctlr]->pdev,
2077 temp64.val, cmd->SG[i].Len,
2078 (cmd->Request.Type.Direction == XFER_READ) ?
2079 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2080 }
2081 complete_buffers(cmd->rq->bio, status);
2082
2083#ifdef CCISS_DEBUG
2084 printk("Done with %p\n", cmd->rq);
2085#endif /* CCISS_DEBUG */
2086
2087 end_that_request_last(cmd->rq);
2088 cmd_free(h,cmd,1);
2089}
2090
2091/*
2092 * Get a request and submit it to the controller.
2093 */
2094static void do_cciss_request(request_queue_t *q)
2095{
2096 ctlr_info_t *h= q->queuedata;
2097 CommandList_struct *c;
2098 int start_blk, seg;
2099 struct request *creq;
2100 u64bit temp64;
2101 struct scatterlist tmp_sg[MAXSGENTRIES];
2102 drive_info_struct *drv;
2103 int i, dir;
2104
2105 /* We call start_io here in case there is a command waiting on the
2106 * queue that has not been sent.
2107 */
2108 if (blk_queue_plugged(q))
2109 goto startio;
2110
2111queue:
2112 creq = elv_next_request(q);
2113 if (!creq)
2114 goto startio;
2115
2116 if (creq->nr_phys_segments > MAXSGENTRIES)
2117 BUG();
2118
2119 if (( c = cmd_alloc(h, 1)) == NULL)
2120 goto full;
2121
2122 blkdev_dequeue_request(creq);
2123
2124 spin_unlock_irq(q->queue_lock);
2125
2126 c->cmd_type = CMD_RWREQ;
2127 c->rq = creq;
2128
2129 /* fill in the request */
2130 drv = creq->rq_disk->private_data;
2131 c->Header.ReplyQueue = 0; // unused in simple mode
2132 c->Header.Tag.lower = c->busaddr; // use the physical address the cmd block for tag
2133 c->Header.LUN.LogDev.VolId= drv->LunID;
2134 c->Header.LUN.LogDev.Mode = 1;
2135 c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2136 c->Request.Type.Type = TYPE_CMD; // It is a command.
2137 c->Request.Type.Attribute = ATTR_SIMPLE;
2138 c->Request.Type.Direction =
2139 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
2140 c->Request.Timeout = 0; // Don't time out
2141 c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2142 start_blk = creq->sector;
2143#ifdef CCISS_DEBUG
2144 printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2145 (int) creq->nr_sectors);
2146#endif /* CCISS_DEBUG */
2147
2148 seg = blk_rq_map_sg(q, creq, tmp_sg);
2149
2150 /* get the DMA records for the setup */
2151 if (c->Request.Type.Direction == XFER_READ)
2152 dir = PCI_DMA_FROMDEVICE;
2153 else
2154 dir = PCI_DMA_TODEVICE;
2155
2156 for (i=0; i<seg; i++)
2157 {
2158 c->SG[i].Len = tmp_sg[i].length;
2159 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2160 tmp_sg[i].offset, tmp_sg[i].length,
2161 dir);
2162 c->SG[i].Addr.lower = temp64.val32.lower;
2163 c->SG[i].Addr.upper = temp64.val32.upper;
2164 c->SG[i].Ext = 0; // we are not chaining
2165 }
2166 /* track how many SG entries we are using */
2167 if( seg > h->maxSG)
2168 h->maxSG = seg;
2169
2170#ifdef CCISS_DEBUG
2171 printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2172#endif /* CCISS_DEBUG */
2173
2174 c->Header.SGList = c->Header.SGTotal = seg;
2175 c->Request.CDB[1]= 0;
2176 c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB
2177 c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2178 c->Request.CDB[4]= (start_blk >> 8) & 0xff;
2179 c->Request.CDB[5]= start_blk & 0xff;
2180 c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2181 c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff;
2182 c->Request.CDB[8]= creq->nr_sectors & 0xff;
2183 c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2184
2185 spin_lock_irq(q->queue_lock);
2186
2187 addQ(&(h->reqQ),c);
2188 h->Qdepth++;
2189 if(h->Qdepth > h->maxQsinceinit)
2190 h->maxQsinceinit = h->Qdepth;
2191
2192 goto queue;
2193full:
2194 blk_stop_queue(q);
2195startio:
2196 /* We will already have the driver lock here so not need
2197 * to lock it.
2198 */
2199 start_io(h);
2200}
2201
2202static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2203{
2204 ctlr_info_t *h = dev_id;
2205 CommandList_struct *c;
2206 unsigned long flags;
2207 __u32 a, a1;
2208 int j;
2209 int start_queue = h->next_to_run;
2210
2211 /* Is this interrupt for us? */
2212 if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2213 return IRQ_NONE;
2214
2215 /*
2216 * If there are completed commands in the completion queue,
2217 * we had better do something about it.
2218 */
2219 spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2220 while( h->access.intr_pending(h))
2221 {
2222 while((a = h->access.command_completed(h)) != FIFO_EMPTY)
2223 {
2224 a1 = a;
2225 a &= ~3;
2226 if ((c = h->cmpQ) == NULL)
2227 {
2228 printk(KERN_WARNING "cciss: Completion of %08lx ignored\n", (unsigned long)a1);
2229 continue;
2230 }
2231 while(c->busaddr != a) {
2232 c = c->next;
2233 if (c == h->cmpQ)
2234 break;
2235 }
2236 /*
2237 * If we've found the command, take it off the
2238 * completion Q and free it
2239 */
2240 if (c->busaddr == a) {
2241 removeQ(&h->cmpQ, c);
2242 if (c->cmd_type == CMD_RWREQ) {
2243 complete_command(h, c, 0);
2244 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2245 complete(c->waiting);
2246 }
2247# ifdef CONFIG_CISS_SCSI_TAPE
2248 else if (c->cmd_type == CMD_SCSI)
2249 complete_scsi_command(c, 0, a1);
2250# endif
2251 continue;
2252 }
2253 }
2254 }
2255
2256 /* check to see if we have maxed out the number of commands that can
2257 * be placed on the queue. If so then exit. We do this check here
2258 * in case the interrupt we serviced was from an ioctl and did not
2259 * free any new commands.
2260 */
2261 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2262 goto cleanup;
2263
2264 /* We have room on the queue for more commands. Now we need to queue
2265 * them up. We will also keep track of the next queue to run so
2266 * that every queue gets a chance to be started first.
2267 */
ad2b9312
MM		 2268 for (j=0; j < h->highest_lun + 1; j++){
2269 int curr_queue = (start_queue + j) % (h->highest_lun + 1);
1da177e4
LT		 2270 /* make sure the disk has been added and the drive is real
2271 * because this can be called from the middle of init_one.
2272 */
ad2b9312 2273 if(!(h->drv[curr_queue].queue) ||
1da177e4
LT		 2274 !(h->drv[curr_queue].heads))
2275 continue;
2276 blk_start_queue(h->gendisk[curr_queue]->queue);
2277
2278 /* check to see if we have maxed out the number of commands
2279 * that can be placed on the queue.
2280 */
2281 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2282 {
2283 if (curr_queue == start_queue){
ad2b9312 2284 h->next_to_run = (start_queue + 1) % (h->highest_lun + 1);
1da177e4
LT		 2285 goto cleanup;
2286 } else {
2287 h->next_to_run = curr_queue;
2288 goto cleanup;
2289 }
2290 } else {
ad2b9312 2291 curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
1da177e4
LT		 2292 }
2293 }
2294
2295cleanup:
2296 spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2297 return IRQ_HANDLED;
2298}
1da177e4
LT		 2299/*
2300 * We cannot read the structure directly, for portablity we must use
2301 * the io functions.
2302 * This is for debug only.
2303 */
2304#ifdef CCISS_DEBUG
2305static void print_cfg_table( CfgTable_struct *tb)
2306{
2307 int i;
2308 char temp_name[17];
2309
2310 printk("Controller Configuration information\n");
2311 printk("------------------------------------\n");
2312 for(i=0;i<4;i++)
2313 temp_name[i] = readb(&(tb->Signature[i]));
2314 temp_name[4]='\0';
2315 printk(" Signature = %s\n", temp_name);
2316 printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
2317 printk(" Transport methods supported = 0x%x\n",
2318 readl(&(tb-> TransportSupport)));
2319 printk(" Transport methods active = 0x%x\n",
2320 readl(&(tb->TransportActive)));
2321 printk(" Requested transport Method = 0x%x\n",
2322 readl(&(tb->HostWrite.TransportRequest)));
2323 printk(" Coalese Interrupt Delay = 0x%x\n",
2324 readl(&(tb->HostWrite.CoalIntDelay)));
2325 printk(" Coalese Interrupt Count = 0x%x\n",
2326 readl(&(tb->HostWrite.CoalIntCount)));
2327 printk(" Max outstanding commands = 0x%d\n",
2328 readl(&(tb->CmdsOutMax)));
2329 printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2330 for(i=0;i<16;i++)
2331 temp_name[i] = readb(&(tb->ServerName[i]));
2332 temp_name[16] = '\0';
2333 printk(" Server Name = %s\n", temp_name);
2334 printk(" Heartbeat Counter = 0x%x\n\n\n",
2335 readl(&(tb->HeartBeat)));
2336}
2337#endif /* CCISS_DEBUG */
2338
2339static void release_io_mem(ctlr_info_t *c)
2340{
2341 /* if IO mem was not protected do nothing */
2342 if( c->io_mem_addr == 0)
2343 return;
2344 release_region(c->io_mem_addr, c->io_mem_length);
2345 c->io_mem_addr = 0;
2346 c->io_mem_length = 0;
2347}
2348
2349static int find_PCI_BAR_index(struct pci_dev *pdev,
2350 unsigned long pci_bar_addr)
2351{
2352 int i, offset, mem_type, bar_type;
2353 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2354 return 0;
2355 offset = 0;
2356 for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2357 bar_type = pci_resource_flags(pdev, i) &
2358 PCI_BASE_ADDRESS_SPACE;
2359 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2360 offset += 4;
2361 else {
2362 mem_type = pci_resource_flags(pdev, i) &
2363 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2364 switch (mem_type) {
2365 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2366 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2367 offset += 4; /* 32 bit */
2368 break;
2369 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2370 offset += 8;
2371 break;
2372 default: /* reserved in PCI 2.2 */
2373 printk(KERN_WARNING "Base address is invalid\n");
2374 return -1;
2375 break;
2376 }
2377 }
2378 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2379 return i+1;
2380 }
2381 return -1;
2382}
2383
2384static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2385{
2386 ushort subsystem_vendor_id, subsystem_device_id, command;
2387 __u32 board_id, scratchpad = 0;
2388 __u64 cfg_offset;
2389 __u32 cfg_base_addr;
2390 __u64 cfg_base_addr_index;
2391 int i;
2392
2393 /* check to see if controller has been disabled */
2394 /* BEFORE trying to enable it */
2395 (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2396 if(!(command & 0x02))
2397 {
2398 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2399 return(-1);
2400 }
2401
2402 if (pci_enable_device(pdev))
2403 {
2404 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2405 return( -1);
2406 }
1da177e4
LT		 2407
2408 subsystem_vendor_id = pdev->subsystem_vendor;
2409 subsystem_device_id = pdev->subsystem_device;
2410 board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2411 subsystem_vendor_id);
2412
2413 /* search for our IO range so we can protect it */
2414 for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2415 {
2416 /* is this an IO range */
2417 if( pci_resource_flags(pdev, i) & 0x01 ) {
2418 c->io_mem_addr = pci_resource_start(pdev, i);
2419 c->io_mem_length = pci_resource_end(pdev, i) -
2420 pci_resource_start(pdev, i) +1;
2421#ifdef CCISS_DEBUG
2422 printk("IO value found base_addr[%d] %lx %lx\n", i,
2423 c->io_mem_addr, c->io_mem_length);
2424#endif /* CCISS_DEBUG */
2425 /* register the IO range */
2426 if(!request_region( c->io_mem_addr,
2427 c->io_mem_length, "cciss"))
2428 {
2429 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2430 c->io_mem_addr, c->io_mem_length);
2431 c->io_mem_addr= 0;
2432 c->io_mem_length = 0;
2433 }
2434 break;
2435 }
2436 }
2437
2438#ifdef CCISS_DEBUG
2439 printk("command = %x\n", command);
2440 printk("irq = %x\n", pdev->irq);
2441 printk("board_id = %x\n", board_id);
2442#endif /* CCISS_DEBUG */
2443
2444 c->intr = pdev->irq;
2445
2446 /*
2447 * Memory base addr is first addr , the second points to the config
2448 * table
2449 */
2450
2451 c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2452#ifdef CCISS_DEBUG
2453 printk("address 0 = %x\n", c->paddr);
2454#endif /* CCISS_DEBUG */
2455 c->vaddr = remap_pci_mem(c->paddr, 200);
2456
2457 /* Wait for the board to become ready. (PCI hotplug needs this.)
2458 * We poll for up to 120 secs, once per 100ms. */
2459 for (i=0; i < 1200; i++) {
2460 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2461 if (scratchpad == CCISS_FIRMWARE_READY)
2462 break;
2463 set_current_state(TASK_INTERRUPTIBLE);
2464 schedule_timeout(HZ / 10); /* wait 100ms */
2465 }
2466 if (scratchpad != CCISS_FIRMWARE_READY) {
2467 printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
2468 return -1;
2469 }
2470
2471 /* get the address index number */
2472 cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2473 cfg_base_addr &= (__u32) 0x0000ffff;
2474#ifdef CCISS_DEBUG
2475 printk("cfg base address = %x\n", cfg_base_addr);
2476#endif /* CCISS_DEBUG */
2477 cfg_base_addr_index =
2478 find_PCI_BAR_index(pdev, cfg_base_addr);
2479#ifdef CCISS_DEBUG
2480 printk("cfg base address index = %x\n", cfg_base_addr_index);
2481#endif /* CCISS_DEBUG */
2482 if (cfg_base_addr_index == -1) {
2483 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2484 release_io_mem(c);
2485 return -1;
2486 }
2487
2488 cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2489#ifdef CCISS_DEBUG
2490 printk("cfg offset = %x\n", cfg_offset);
2491#endif /* CCISS_DEBUG */
2492 c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
2493 cfg_base_addr_index) + cfg_offset,
2494 sizeof(CfgTable_struct));
2495 c->board_id = board_id;
2496
2497#ifdef CCISS_DEBUG
2498 print_cfg_table(c->cfgtable);
2499#endif /* CCISS_DEBUG */
2500
2501 for(i=0; i<NR_PRODUCTS; i++) {
2502 if (board_id == products[i].board_id) {
2503 c->product_name = products[i].product_name;
2504 c->access = *(products[i].access);
2505 break;
2506 }
2507 }
2508 if (i == NR_PRODUCTS) {
2509 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2510 " to access the Smart Array controller %08lx\n",
2511 (unsigned long)board_id);
2512 return -1;
2513 }
2514 if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
2515 (readb(&c->cfgtable->Signature[1]) != 'I') ||
2516 (readb(&c->cfgtable->Signature[2]) != 'S') ||
2517 (readb(&c->cfgtable->Signature[3]) != 'S') )
2518 {
2519 printk("Does not appear to be a valid CISS config table\n");
2520 return -1;
2521 }
2522
2523#ifdef CONFIG_X86
2524{
2525 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2526 __u32 prefetch;
2527 prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2528 prefetch |= 0x100;
2529 writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2530}
2531#endif
2532
2533#ifdef CCISS_DEBUG
2534 printk("Trying to put board into Simple mode\n");
2535#endif /* CCISS_DEBUG */
2536 c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2537 /* Update the field, and then ring the doorbell */
2538 writel( CFGTBL_Trans_Simple,
2539 &(c->cfgtable->HostWrite.TransportRequest));
2540 writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2541
2542 /* under certain very rare conditions, this can take awhile.
2543 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2544 * as we enter this code.) */
2545 for(i=0;i<MAX_CONFIG_WAIT;i++) {
2546 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2547 break;
2548 /* delay and try again */
2549 set_current_state(TASK_INTERRUPTIBLE);
2550 schedule_timeout(10);
2551 }
2552
2553#ifdef CCISS_DEBUG
2554 printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2555#endif /* CCISS_DEBUG */
2556#ifdef CCISS_DEBUG
2557 print_cfg_table(c->cfgtable);
2558#endif /* CCISS_DEBUG */
2559
2560 if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2561 {
2562 printk(KERN_WARNING "cciss: unable to get board into"
2563 " simple mode\n");
2564 return -1;
2565 }
2566 return 0;
2567
2568}
2569
2570/*
2571 * Gets information about the local volumes attached to the controller.
2572 */
2573static void cciss_getgeometry(int cntl_num)
2574{
2575 ReportLunData_struct *ld_buff;
2576 ReadCapdata_struct *size_buff;
2577 InquiryData_struct *inq_buff;
2578 int return_code;
2579 int i;
2580 int listlength = 0;
2581 __u32 lunid = 0;
2582 int block_size;
2583 int total_size;
2584
2585 ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2586 if (ld_buff == NULL)
2587 {
2588 printk(KERN_ERR "cciss: out of memory\n");
2589 return;
2590 }
2591 memset(ld_buff, 0, sizeof(ReportLunData_struct));
2592 size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2593 if (size_buff == NULL)
2594 {
2595 printk(KERN_ERR "cciss: out of memory\n");
2596 kfree(ld_buff);
2597 return;
2598 }
2599 inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2600 if (inq_buff == NULL)
2601 {
2602 printk(KERN_ERR "cciss: out of memory\n");
2603 kfree(ld_buff);
2604 kfree(size_buff);
2605 return;
2606 }
2607 /* Get the firmware version */
2608 return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2609 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2610 if (return_code == IO_OK)
2611 {
2612 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2613 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2614 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2615 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2616 } else /* send command failed */
2617 {
2618 printk(KERN_WARNING "cciss: unable to determine firmware"
2619 " version of controller\n");
2620 }
2621 /* Get the number of logical volumes */
2622 return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2623 sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2624
2625 if( return_code == IO_OK)
2626 {
2627#ifdef CCISS_DEBUG
2628 printk("LUN Data\n--------------------------\n");
2629#endif /* CCISS_DEBUG */
2630
2631 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2632 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2633 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
2634 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2635 } else /* reading number of logical volumes failed */
2636 {
2637 printk(KERN_WARNING "cciss: report logical volume"
2638 " command failed\n");
2639 listlength = 0;
2640 }
2641 hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2642 if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2643 {
2644 printk(KERN_ERR "ciss: only %d number of logical volumes supported\n",
2645 CISS_MAX_LUN);
2646 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2647 }
2648#ifdef CCISS_DEBUG
2649 printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2650 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2651 ld_buff->LUNListLength[3], hba[cntl_num]->num_luns);
2652#endif /* CCISS_DEBUG */
2653
2654 hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
2655 for(i=0; i< hba[cntl_num]->num_luns; i++)
2656 {
2657
2658 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
2659 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
2660 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
2661 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2662
2663 hba[cntl_num]->drv[i].LunID = lunid;
2664
2665
2666#ifdef CCISS_DEBUG
2667 printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
2668 ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2],
2669 ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID);
2670#endif /* CCISS_DEBUG */
2671 cciss_read_capacity(cntl_num, i, size_buff, 0,
2672 &total_size, &block_size);
2673 cciss_geometry_inquiry(cntl_num, i, 0, total_size, block_size,
2674 inq_buff, &hba[cntl_num]->drv[i]);
2675 }
2676 kfree(ld_buff);
2677 kfree(size_buff);
2678 kfree(inq_buff);
2679}
2680
2681/* Function to find the first free pointer into our hba[] array */
2682/* Returns -1 if no free entries are left. */
2683static int alloc_cciss_hba(void)
2684{
2685 struct gendisk *disk[NWD];
2686 int i, n;
2687 for (n = 0; n < NWD; n++) {
2688 disk[n] = alloc_disk(1 << NWD_SHIFT);
2689 if (!disk[n])
2690 goto out;
2691 }
2692
2693 for(i=0; i< MAX_CTLR; i++) {
2694 if (!hba[i]) {
2695 ctlr_info_t *p;
2696 p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
2697 if (!p)
2698 goto Enomem;
2699 memset(p, 0, sizeof(ctlr_info_t));
2700 for (n = 0; n < NWD; n++)
2701 p->gendisk[n] = disk[n];
2702 hba[i] = p;
2703 return i;
2704 }
2705 }
2706 printk(KERN_WARNING "cciss: This driver supports a maximum"
2707 " of %d controllers.\n", MAX_CTLR);
2708 goto out;
2709Enomem:
2710 printk(KERN_ERR "cciss: out of memory.\n");
2711out:
2712 while (n--)
2713 put_disk(disk[n]);
2714 return -1;
2715}
2716
2717static void free_hba(int i)
2718{
2719 ctlr_info_t *p = hba[i];
2720 int n;
2721
2722 hba[i] = NULL;
2723 for (n = 0; n < NWD; n++)
2724 put_disk(p->gendisk[n]);
2725 kfree(p);
2726}
2727
2728/*
2729 * This is it. Find all the controllers and register them. I really hate
2730 * stealing all these major device numbers.
2731 * returns the number of block devices registered.
2732 */
2733static int __devinit cciss_init_one(struct pci_dev *pdev,
2734 const struct pci_device_id *ent)
2735{
2736 request_queue_t *q;
2737 int i;
2738 int j;
2739 int rc;
2740
2741 printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
2742 " bus %d dev %d func %d\n",
2743 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
2744 PCI_FUNC(pdev->devfn));
2745 i = alloc_cciss_hba();
2746 if(i < 0)
2747 return (-1);
1f8ef380
MM		 2748
2749 hba[i]->busy_initializing = 1;
2750
1da177e4
LT		 2751 if (cciss_pci_init(hba[i], pdev) != 0)
2752 goto clean1;
2753
2754 sprintf(hba[i]->devname, "cciss%d", i);
2755 hba[i]->ctlr = i;
2756 hba[i]->pdev = pdev;
2757
2758 /* configure PCI DMA stuff */
eb0df996 2759 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
1da177e4 2760 printk("cciss: using DAC cycles\n");
eb0df996 2761 else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
1da177e4
LT		 2762 printk("cciss: not using DAC cycles\n");
2763 else {
2764 printk("cciss: no suitable DMA available\n");
2765 goto clean1;
2766 }
2767
2768 /*
2769 * register with the major number, or get a dynamic major number
2770 * by passing 0 as argument. This is done for greater than
2771 * 8 controller support.
2772 */
2773 if (i < MAX_CTLR_ORIG)
2774 hba[i]->major = MAJOR_NR + i;
2775 rc = register_blkdev(hba[i]->major, hba[i]->devname);
2776 if(rc == -EBUSY || rc == -EINVAL) {
2777 printk(KERN_ERR
2778 "cciss: Unable to get major number %d for %s "
2779 "on hba %d\n", hba[i]->major, hba[i]->devname, i);
2780 goto clean1;
2781 }
2782 else {
2783 if (i >= MAX_CTLR_ORIG)
2784 hba[i]->major = rc;
2785 }
2786
2787 /* make sure the board interrupts are off */
2788 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
2789 if( request_irq(hba[i]->intr, do_cciss_intr,
2790 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
2791 hba[i]->devname, hba[i])) {
2792 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
2793 hba[i]->intr, hba[i]->devname);
2794 goto clean2;
2795 }
2796 hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
2797 hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
2798 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2799 &(hba[i]->cmd_pool_dhandle));
2800 hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
2801 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2802 &(hba[i]->errinfo_pool_dhandle));
2803 if((hba[i]->cmd_pool_bits == NULL)
2804 || (hba[i]->cmd_pool == NULL)
2805 || (hba[i]->errinfo_pool == NULL)) {
2806 printk( KERN_ERR "cciss: out of memory");
2807 goto clean4;
2808 }
2809
2810 spin_lock_init(&hba[i]->lock);
1da177e4
LT		 2811
2812 /* Initialize the pdev driver private data.
2813 have it point to hba[i]. */
2814 pci_set_drvdata(pdev, hba[i]);
2815 /* command and error info recs zeroed out before
2816 they are used */
2817 memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
2818
2819#ifdef CCISS_DEBUG
2820 printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
2821#endif /* CCISS_DEBUG */
2822
2823 cciss_getgeometry(i);
2824
2825 cciss_scsi_setup(i);
2826
2827 /* Turn the interrupts on so we can service requests */
2828 hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
2829
2830 cciss_procinit(i);
2831
ad2b9312
MM		 2832 for(j=0; j < NWD; j++) { /* mfm */
2833 drive_info_struct *drv = &(hba[i]->drv[j]);
2834 struct gendisk *disk = hba[i]->gendisk[j];
2835
2836 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
2837 if (!q) {
2838 printk(KERN_ERR
2839 "cciss: unable to allocate queue for disk %d\n",
2840 j);
2841 break;
2842 }
2843 drv->queue = q;
2844
2845 q->backing_dev_info.ra_pages = READ_AHEAD;
1da177e4
LT		 2846 blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
2847
2848 /* This is a hardware imposed limit. */
2849 blk_queue_max_hw_segments(q, MAXSGENTRIES);
2850
2851 /* This is a limit in the driver and could be eliminated. */
2852 blk_queue_max_phys_segments(q, MAXSGENTRIES);
2853
2854 blk_queue_max_sectors(q, 512);
2855
ad2b9312 2856 q->queuedata = hba[i];
1da177e4
LT		 2857 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
2858 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
2859 disk->major = hba[i]->major;
2860 disk->first_minor = j << NWD_SHIFT;
2861 disk->fops = &cciss_fops;
ad2b9312 2862 disk->queue = q;
1da177e4
LT		 2863 disk->private_data = drv;
2864 /* we must register the controller even if no disks exist */
2865 /* this is for the online array utilities */
2866 if(!drv->heads && j)
2867 continue;
ad2b9312 2868 blk_queue_hardsect_size(q, drv->block_size);
1da177e4
LT		 2869 set_capacity(disk, drv->nr_blocks);
2870 add_disk(disk);
2871 }
ad2b9312 2872
1f8ef380 2873 hba[i]->busy_initializing = 0;
1da177e4
LT		 2874 return(1);
2875
2876clean4:
2877 if(hba[i]->cmd_pool_bits)
2878 kfree(hba[i]->cmd_pool_bits);
2879 if(hba[i]->cmd_pool)
2880 pci_free_consistent(hba[i]->pdev,
2881 NR_CMDS * sizeof(CommandList_struct),
2882 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2883 if(hba[i]->errinfo_pool)
2884 pci_free_consistent(hba[i]->pdev,
2885 NR_CMDS * sizeof( ErrorInfo_struct),
2886 hba[i]->errinfo_pool,
2887 hba[i]->errinfo_pool_dhandle);
2888 free_irq(hba[i]->intr, hba[i]);
2889clean2:
2890 unregister_blkdev(hba[i]->major, hba[i]->devname);
2891clean1:
2892 release_io_mem(hba[i]);
2893 free_hba(i);
1f8ef380 2894 hba[i]->busy_initializing = 0;
1da177e4
LT		 2895 return(-1);
2896}
2897
2898static void __devexit cciss_remove_one (struct pci_dev *pdev)
2899{
2900 ctlr_info_t *tmp_ptr;
2901 int i, j;
2902 char flush_buf[4];
2903 int return_code;
2904
2905 if (pci_get_drvdata(pdev) == NULL)
2906 {
2907 printk( KERN_ERR "cciss: Unable to remove device \n");
2908 return;
2909 }
2910 tmp_ptr = pci_get_drvdata(pdev);
2911 i = tmp_ptr->ctlr;
2912 if (hba[i] == NULL)
2913 {
2914 printk(KERN_ERR "cciss: device appears to "
2915 "already be removed \n");
2916 return;
2917 }
2918 /* Turn board interrupts off and send the flush cache command */
2919 /* sendcmd will turn off interrupt, and send the flush...
2920 * To write all data in the battery backed cache to disks */
2921 memset(flush_buf, 0, 4);
2922 return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
2923 TYPE_CMD);
2924 if(return_code != IO_OK)
2925 {
2926 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
2927 i);
2928 }
2929 free_irq(hba[i]->intr, hba[i]);
2930 pci_set_drvdata(pdev, NULL);
2931 iounmap(hba[i]->vaddr);
2932 cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
2933 unregister_blkdev(hba[i]->major, hba[i]->devname);
2934 remove_proc_entry(hba[i]->devname, proc_cciss);
2935
2936 /* remove it from the disk list */
2937 for (j = 0; j < NWD; j++) {
2938 struct gendisk *disk = hba[i]->gendisk[j];
2939 if (disk->flags & GENHD_FL_UP)
ad2b9312 2940 blk_cleanup_queue(disk->queue);
1da177e4
LT		 2941 del_gendisk(disk);
2942 }
2943
1da177e4
LT		 2944 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2945 hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2946 pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2947 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
2948 kfree(hba[i]->cmd_pool_bits);
2949 release_io_mem(hba[i]);
2950 free_hba(i);
2951}
2952
2953static struct pci_driver cciss_pci_driver = {
2954 .name = "cciss",
2955 .probe = cciss_init_one,
2956 .remove = __devexit_p(cciss_remove_one),
2957 .id_table = cciss_pci_device_id, /* id_table */
2958};
2959
2960/*
2961 * This is it. Register the PCI driver information for the cards we control
2962 * the OS will call our registered routines when it finds one of our cards.
2963 */
2964static int __init cciss_init(void)
2965{
2966 printk(KERN_INFO DRIVER_NAME "\n");
2967
2968 /* Register for our PCI devices */
2969 return pci_module_init(&cciss_pci_driver);
2970}
2971
2972static void __exit cciss_cleanup(void)
2973{
2974 int i;
2975
2976 pci_unregister_driver(&cciss_pci_driver);
2977 /* double check that all controller entrys have been removed */
2978 for (i=0; i< MAX_CTLR; i++)
2979 {
2980 if (hba[i] != NULL)
2981 {
2982 printk(KERN_WARNING "cciss: had to remove"
2983 " controller %d\n", i);
2984 cciss_remove_one(hba[i]->pdev);
2985 }
2986 }
2987 remove_proc_entry("cciss", proc_root_driver);
2988}
2989
2990module_init(cciss_init);
2991module_exit(cciss_cleanup);
Linux kernel - Deliverables
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