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