[IA64] fix circular dependency on generation of asm-offsets.h
[linux-2.6.git] / drivers / block / cciss.c
1 /*
2  *    Disk Array driver for HP SA 5xxx and 6xxx Controllers
3  *    Copyright 2000, 2005 Hewlett-Packard Development Company, L.P.
4  *
5  *    This program is free software; you can redistribute it and/or modify
6  *    it under the terms of the GNU General Public License as published by
7  *    the Free Software Foundation; either version 2 of the License, or
8  *    (at your option) any later version.
9  *
10  *    This program is distributed in the hope that it will be useful,
11  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
12  *    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13  *    NON INFRINGEMENT.  See the GNU General Public License for more details.
14  *
15  *    You should have received a copy of the GNU General Public License
16  *    along with this program; if not, write to the Free Software
17  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18  *
19  *    Questions/Comments/Bugfixes to iss_storagedev@hp.com
20  *
21  */
22
23 #include <linux/config.h>       /* CONFIG_PROC_FS */
24 #include <linux/module.h>
25 #include <linux/interrupt.h>
26 #include <linux/types.h>
27 #include <linux/pci.h>
28 #include <linux/kernel.h>
29 #include <linux/slab.h>
30 #include <linux/delay.h>
31 #include <linux/major.h>
32 #include <linux/fs.h>
33 #include <linux/bio.h>
34 #include <linux/blkpg.h>
35 #include <linux/timer.h>
36 #include <linux/proc_fs.h>
37 #include <linux/init.h> 
38 #include <linux/hdreg.h>
39 #include <linux/spinlock.h>
40 #include <linux/compat.h>
41 #include <asm/uaccess.h>
42 #include <asm/io.h>
43
44 #include <linux/dma-mapping.h>
45 #include <linux/blkdev.h>
46 #include <linux/genhd.h>
47 #include <linux/completion.h>
48
49 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
50 #define DRIVER_NAME "HP CISS Driver (v 2.6.6)"
51 #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,6)
52
53 /* Embedded module documentation macros - see modules.h */
54 MODULE_AUTHOR("Hewlett-Packard Company");
55 MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.6");
56 MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
57                         " SA6i P600 P800 E400 E300");
58 MODULE_LICENSE("GPL");
59
60 #include "cciss_cmd.h"
61 #include "cciss.h"
62 #include <linux/cciss_ioctl.h>
63
64 /* define the PCI info for the cards we can control */
65 static const struct pci_device_id cciss_pci_device_id[] = {
66         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS,
67                         0x0E11, 0x4070, 0, 0, 0},
68         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
69                         0x0E11, 0x4080, 0, 0, 0},
70         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
71                         0x0E11, 0x4082, 0, 0, 0},
72         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
73                         0x0E11, 0x4083, 0, 0, 0},
74         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
75                 0x0E11, 0x409A, 0, 0, 0},
76         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
77                 0x0E11, 0x409B, 0, 0, 0},
78         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
79                 0x0E11, 0x409C, 0, 0, 0},
80         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
81                 0x0E11, 0x409D, 0, 0, 0},
82         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
83                 0x0E11, 0x4091, 0, 0, 0},
84         { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA,
85                 0x103C, 0x3225, 0, 0, 0},
86         { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSB,
87                 0x103c, 0x3223, 0, 0, 0},
88         { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
89                 0x103c, 0x3231, 0, 0, 0},
90         { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
91                 0x103c, 0x3233, 0, 0, 0},
92         {0,}
93 };
94 MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
95
96 #define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
97
98 /*  board_id = Subsystem Device ID & Vendor ID
99  *  product = Marketing Name for the board
100  *  access = Address of the struct of function pointers 
101  */
102 static struct board_type products[] = {
103         { 0x40700E11, "Smart Array 5300", &SA5_access },
104         { 0x40800E11, "Smart Array 5i", &SA5B_access},
105         { 0x40820E11, "Smart Array 532", &SA5B_access},
106         { 0x40830E11, "Smart Array 5312", &SA5B_access},
107         { 0x409A0E11, "Smart Array 641", &SA5_access},
108         { 0x409B0E11, "Smart Array 642", &SA5_access},
109         { 0x409C0E11, "Smart Array 6400", &SA5_access},
110         { 0x409D0E11, "Smart Array 6400 EM", &SA5_access},
111         { 0x40910E11, "Smart Array 6i", &SA5_access},
112         { 0x3225103C, "Smart Array P600", &SA5_access},
113         { 0x3223103C, "Smart Array P800", &SA5_access},
114         { 0x3231103C, "Smart Array E400", &SA5_access},
115         { 0x3233103C, "Smart Array E300", &SA5_access},
116 };
117
118 /* How long to wait (in millesconds) for board to go into simple mode */
119 #define MAX_CONFIG_WAIT 30000 
120 #define MAX_IOCTL_CONFIG_WAIT 1000
121
122 /*define how many times we will try a command because of bus resets */
123 #define MAX_CMD_RETRIES 3
124
125 #define READ_AHEAD       1024
126 #define NR_CMDS          384 /* #commands that can be outstanding */
127 #define MAX_CTLR        32
128
129 /* Originally cciss driver only supports 8 major numbers */
130 #define MAX_CTLR_ORIG   8
131
132
133 static ctlr_info_t *hba[MAX_CTLR];
134
135 static void do_cciss_request(request_queue_t *q);
136 static int cciss_open(struct inode *inode, struct file *filep);
137 static int cciss_release(struct inode *inode, struct file *filep);
138 static int cciss_ioctl(struct inode *inode, struct file *filep, 
139                 unsigned int cmd, unsigned long arg);
140
141 static int revalidate_allvol(ctlr_info_t *host);
142 static int cciss_revalidate(struct gendisk *disk);
143 static int deregister_disk(struct gendisk *disk);
144 static int register_new_disk(ctlr_info_t *h);
145
146 static void cciss_getgeometry(int cntl_num);
147
148 static void start_io( ctlr_info_t *h);
149 static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
150         unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
151         unsigned char *scsi3addr, int cmd_type);
152
153 #ifdef CONFIG_PROC_FS
154 static int cciss_proc_get_info(char *buffer, char **start, off_t offset, 
155                 int length, int *eof, void *data);
156 static void cciss_procinit(int i);
157 #else
158 static void cciss_procinit(int i) {}
159 #endif /* CONFIG_PROC_FS */
160
161 #ifdef CONFIG_COMPAT
162 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
163 #endif
164
165 static struct block_device_operations cciss_fops  = {
166         .owner          = THIS_MODULE,
167         .open           = cciss_open, 
168         .release        = cciss_release,
169         .ioctl          = cciss_ioctl,
170 #ifdef CONFIG_COMPAT
171         .compat_ioctl   = cciss_compat_ioctl,
172 #endif
173         .revalidate_disk= cciss_revalidate,
174 };
175
176 /*
177  * Enqueuing and dequeuing functions for cmdlists.
178  */
179 static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
180 {
181         if (*Qptr == NULL) {
182                 *Qptr = c;
183                 c->next = c->prev = c;
184         } else {
185                 c->prev = (*Qptr)->prev;
186                 c->next = (*Qptr);
187                 (*Qptr)->prev->next = c;
188                 (*Qptr)->prev = c;
189         }
190 }
191
192 static inline CommandList_struct *removeQ(CommandList_struct **Qptr, 
193                                                 CommandList_struct *c)
194 {
195         if (c && c->next != c) {
196                 if (*Qptr == c) *Qptr = c->next;
197                 c->prev->next = c->next;
198                 c->next->prev = c->prev;
199         } else {
200                 *Qptr = NULL;
201         }
202         return c;
203 }
204
205 #include "cciss_scsi.c"         /* For SCSI tape support */
206
207 #ifdef CONFIG_PROC_FS
208
209 /*
210  * Report information about this controller.
211  */
212 #define ENG_GIG 1000000000
213 #define ENG_GIG_FACTOR (ENG_GIG/512)
214 #define RAID_UNKNOWN 6
215 static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
216                                            "UNKNOWN"};
217
218 static struct proc_dir_entry *proc_cciss;
219
220 static int cciss_proc_get_info(char *buffer, char **start, off_t offset, 
221                 int length, int *eof, void *data)
222 {
223         off_t pos = 0;
224         off_t len = 0;
225         int size, i, ctlr;
226         ctlr_info_t *h = (ctlr_info_t*)data;
227         drive_info_struct *drv;
228         unsigned long flags;
229         sector_t vol_sz, vol_sz_frac;
230
231         ctlr = h->ctlr;
232
233         /* prevent displaying bogus info during configuration
234          * or deconfiguration of a logical volume
235          */
236         spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
237         if (h->busy_configuring) {
238                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
239         return -EBUSY;
240         }
241         h->busy_configuring = 1;
242         spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
243
244         size = sprintf(buffer, "%s: HP %s Controller\n"
245                 "Board ID: 0x%08lx\n"
246                 "Firmware Version: %c%c%c%c\n"
247                 "IRQ: %d\n"
248                 "Logical drives: %d\n"
249                 "Current Q depth: %d\n"
250                 "Current # commands on controller: %d\n"
251                 "Max Q depth since init: %d\n"
252                 "Max # commands on controller since init: %d\n"
253                 "Max SG entries since init: %d\n\n",
254                 h->devname,
255                 h->product_name,
256                 (unsigned long)h->board_id,
257                 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
258                 (unsigned int)h->intr,
259                 h->num_luns, 
260                 h->Qdepth, h->commands_outstanding,
261                 h->maxQsinceinit, h->max_outstanding, h->maxSG);
262
263         pos += size; len += size;
264         cciss_proc_tape_report(ctlr, buffer, &pos, &len);
265         for(i=0; i<=h->highest_lun; i++) {
266
267                 drv = &h->drv[i];
268                 if (drv->block_size == 0)
269                         continue;
270
271                 vol_sz = drv->nr_blocks;
272                 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
273                 vol_sz_frac *= 100;
274                 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
275
276                 if (drv->raid_level > 5)
277                         drv->raid_level = RAID_UNKNOWN;
278                 size = sprintf(buffer+len, "cciss/c%dd%d:"
279                                 "\t%4u.%02uGB\tRAID %s\n",
280                                 ctlr, i, (int)vol_sz, (int)vol_sz_frac,
281                                 raid_label[drv->raid_level]);
282                 pos += size; len += size;
283         }
284
285         *eof = 1;
286         *start = buffer+offset;
287         len -= offset;
288         if (len>length)
289                 len = length;
290         h->busy_configuring = 0;
291         return len;
292 }
293
294 static int 
295 cciss_proc_write(struct file *file, const char __user *buffer, 
296                         unsigned long count, void *data)
297 {
298         unsigned char cmd[80];
299         int len;
300 #ifdef CONFIG_CISS_SCSI_TAPE
301         ctlr_info_t *h = (ctlr_info_t *) data;
302         int rc;
303 #endif
304
305         if (count > sizeof(cmd)-1) return -EINVAL;
306         if (copy_from_user(cmd, buffer, count)) return -EFAULT;
307         cmd[count] = '\0';
308         len = strlen(cmd);      // above 3 lines ensure safety
309         if (len && cmd[len-1] == '\n')
310                 cmd[--len] = '\0';
311 #       ifdef CONFIG_CISS_SCSI_TAPE
312                 if (strcmp("engage scsi", cmd)==0) {
313                         rc = cciss_engage_scsi(h->ctlr);
314                         if (rc != 0) return -rc;
315                         return count;
316                 }
317                 /* might be nice to have "disengage" too, but it's not 
318                    safely possible. (only 1 module use count, lock issues.) */
319 #       endif
320         return -EINVAL;
321 }
322
323 /*
324  * Get us a file in /proc/cciss that says something about each controller.
325  * Create /proc/cciss if it doesn't exist yet.
326  */
327 static void __devinit cciss_procinit(int i)
328 {
329         struct proc_dir_entry *pde;
330
331         if (proc_cciss == NULL) {
332                 proc_cciss = proc_mkdir("cciss", proc_root_driver);
333                 if (!proc_cciss) 
334                         return;
335         }
336
337         pde = create_proc_read_entry(hba[i]->devname, 
338                 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH, 
339                 proc_cciss, cciss_proc_get_info, hba[i]);
340         pde->write_proc = cciss_proc_write;
341 }
342 #endif /* CONFIG_PROC_FS */
343
344 /* 
345  * For operations that cannot sleep, a command block is allocated at init, 
346  * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
347  * which ones are free or in use.  For operations that can wait for kmalloc 
348  * to possible sleep, this routine can be called with get_from_pool set to 0. 
349  * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. 
350  */ 
351 static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
352 {
353         CommandList_struct *c;
354         int i; 
355         u64bit temp64;
356         dma_addr_t cmd_dma_handle, err_dma_handle;
357
358         if (!get_from_pool)
359         {
360                 c = (CommandList_struct *) pci_alloc_consistent(
361                         h->pdev, sizeof(CommandList_struct), &cmd_dma_handle); 
362                 if(c==NULL)
363                         return NULL;
364                 memset(c, 0, sizeof(CommandList_struct));
365
366                 c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
367                                         h->pdev, sizeof(ErrorInfo_struct), 
368                                         &err_dma_handle);
369         
370                 if (c->err_info == NULL)
371                 {
372                         pci_free_consistent(h->pdev, 
373                                 sizeof(CommandList_struct), c, cmd_dma_handle);
374                         return NULL;
375                 }
376                 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
377         } else /* get it out of the controllers pool */ 
378         {
379                 do {
380                         i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
381                         if (i == NR_CMDS)
382                                 return NULL;
383                 } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
384 #ifdef CCISS_DEBUG
385                 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
386 #endif
387                 c = h->cmd_pool + i;
388                 memset(c, 0, sizeof(CommandList_struct));
389                 cmd_dma_handle = h->cmd_pool_dhandle 
390                                         + i*sizeof(CommandList_struct);
391                 c->err_info = h->errinfo_pool + i;
392                 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
393                 err_dma_handle = h->errinfo_pool_dhandle 
394                                         + i*sizeof(ErrorInfo_struct);
395                 h->nr_allocs++;
396         }
397
398         c->busaddr = (__u32) cmd_dma_handle;
399         temp64.val = (__u64) err_dma_handle;    
400         c->ErrDesc.Addr.lower = temp64.val32.lower;
401         c->ErrDesc.Addr.upper = temp64.val32.upper;
402         c->ErrDesc.Len = sizeof(ErrorInfo_struct);
403         
404         c->ctlr = h->ctlr;
405         return c;
406
407
408 }
409
410 /* 
411  * Frees a command block that was previously allocated with cmd_alloc(). 
412  */
413 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
414 {
415         int i;
416         u64bit temp64;
417
418         if( !got_from_pool)
419         { 
420                 temp64.val32.lower = c->ErrDesc.Addr.lower;
421                 temp64.val32.upper = c->ErrDesc.Addr.upper;
422                 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), 
423                         c->err_info, (dma_addr_t) temp64.val);
424                 pci_free_consistent(h->pdev, sizeof(CommandList_struct), 
425                         c, (dma_addr_t) c->busaddr);
426         } else 
427         {
428                 i = c - h->cmd_pool;
429                 clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
430                 h->nr_frees++;
431         }
432 }
433
434 static inline ctlr_info_t *get_host(struct gendisk *disk)
435 {
436         return disk->queue->queuedata; 
437 }
438
439 static inline drive_info_struct *get_drv(struct gendisk *disk)
440 {
441         return disk->private_data;
442 }
443
444 /*
445  * Open.  Make sure the device is really there.
446  */
447 static int cciss_open(struct inode *inode, struct file *filep)
448 {
449         ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
450         drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
451
452 #ifdef CCISS_DEBUG
453         printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
454 #endif /* CCISS_DEBUG */ 
455
456         /*
457          * Root is allowed to open raw volume zero even if it's not configured
458          * so array config can still work. Root is also allowed to open any
459          * volume that has a LUN ID, so it can issue IOCTL to reread the
460          * disk information.  I don't think I really like this
461          * but I'm already using way to many device nodes to claim another one
462          * for "raw controller".
463          */
464         if (drv->nr_blocks == 0) {
465                 if (iminor(inode) != 0) {       /* not node 0? */
466                         /* if not node 0 make sure it is a partition = 0 */
467                         if (iminor(inode) & 0x0f) {
468                         return -ENXIO;
469                                 /* if it is, make sure we have a LUN ID */
470                         } else if (drv->LunID == 0) {
471                                 return -ENXIO;
472                         }
473                 }
474                 if (!capable(CAP_SYS_ADMIN))
475                         return -EPERM;
476         }
477         drv->usage_count++;
478         host->usage_count++;
479         return 0;
480 }
481 /*
482  * Close.  Sync first.
483  */
484 static int cciss_release(struct inode *inode, struct file *filep)
485 {
486         ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
487         drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
488
489 #ifdef CCISS_DEBUG
490         printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
491 #endif /* CCISS_DEBUG */
492
493         drv->usage_count--;
494         host->usage_count--;
495         return 0;
496 }
497
498 #ifdef CONFIG_COMPAT
499
500 static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
501 {
502         int ret;
503         lock_kernel();
504         ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
505         unlock_kernel();
506         return ret;
507 }
508
509 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
510 static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
511
512 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
513 {
514         switch (cmd) {
515         case CCISS_GETPCIINFO:
516         case CCISS_GETINTINFO:
517         case CCISS_SETINTINFO:
518         case CCISS_GETNODENAME:
519         case CCISS_SETNODENAME:
520         case CCISS_GETHEARTBEAT:
521         case CCISS_GETBUSTYPES:
522         case CCISS_GETFIRMVER:
523         case CCISS_GETDRIVVER:
524         case CCISS_REVALIDVOLS:
525         case CCISS_DEREGDISK:
526         case CCISS_REGNEWDISK:
527         case CCISS_REGNEWD:
528         case CCISS_RESCANDISK:
529         case CCISS_GETLUNINFO:
530                 return do_ioctl(f, cmd, arg);
531
532         case CCISS_PASSTHRU32:
533                 return cciss_ioctl32_passthru(f, cmd, arg);
534         case CCISS_BIG_PASSTHRU32:
535                 return cciss_ioctl32_big_passthru(f, cmd, arg);
536
537         default:
538                 return -ENOIOCTLCMD;
539         }
540 }
541
542 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
543 {
544         IOCTL32_Command_struct __user *arg32 =
545                 (IOCTL32_Command_struct __user *) arg;
546         IOCTL_Command_struct arg64;
547         IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
548         int err;
549         u32 cp;
550
551         err = 0;
552         err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
553         err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
554         err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
555         err |= get_user(arg64.buf_size, &arg32->buf_size);
556         err |= get_user(cp, &arg32->buf);
557         arg64.buf = compat_ptr(cp);
558         err |= copy_to_user(p, &arg64, sizeof(arg64));
559
560         if (err)
561                 return -EFAULT;
562
563         err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
564         if (err)
565                 return err;
566         err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
567         if (err)
568                 return -EFAULT;
569         return err;
570 }
571
572 static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
573 {
574         BIG_IOCTL32_Command_struct __user *arg32 =
575                 (BIG_IOCTL32_Command_struct __user *) arg;
576         BIG_IOCTL_Command_struct arg64;
577         BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
578         int err;
579         u32 cp;
580
581         err = 0;
582         err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
583         err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
584         err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
585         err |= get_user(arg64.buf_size, &arg32->buf_size);
586         err |= get_user(arg64.malloc_size, &arg32->malloc_size);
587         err |= get_user(cp, &arg32->buf);
588         arg64.buf = compat_ptr(cp);
589         err |= copy_to_user(p, &arg64, sizeof(arg64));
590
591         if (err)
592                  return -EFAULT;
593
594         err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
595         if (err)
596                 return err;
597         err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
598         if (err)
599                 return -EFAULT;
600         return err;
601 }
602 #endif
603 /*
604  * ioctl 
605  */
606 static int cciss_ioctl(struct inode *inode, struct file *filep, 
607                 unsigned int cmd, unsigned long arg)
608 {
609         struct block_device *bdev = inode->i_bdev;
610         struct gendisk *disk = bdev->bd_disk;
611         ctlr_info_t *host = get_host(disk);
612         drive_info_struct *drv = get_drv(disk);
613         int ctlr = host->ctlr;
614         void __user *argp = (void __user *)arg;
615
616 #ifdef CCISS_DEBUG
617         printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
618 #endif /* CCISS_DEBUG */ 
619         
620         switch(cmd) {
621         case HDIO_GETGEO:
622         {
623                 struct hd_geometry driver_geo;
624                 if (drv->cylinders) {
625                         driver_geo.heads = drv->heads;
626                         driver_geo.sectors = drv->sectors;
627                         driver_geo.cylinders = drv->cylinders;
628                 } else
629                         return -ENXIO;
630                 driver_geo.start= get_start_sect(inode->i_bdev);
631                 if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry)))
632                         return  -EFAULT;
633                 return(0);
634         }
635
636         case CCISS_GETPCIINFO:
637         {
638                 cciss_pci_info_struct pciinfo;
639
640                 if (!arg) return -EINVAL;
641                 pciinfo.domain = pci_domain_nr(host->pdev->bus);
642                 pciinfo.bus = host->pdev->bus->number;
643                 pciinfo.dev_fn = host->pdev->devfn;
644                 pciinfo.board_id = host->board_id;
645                 if (copy_to_user(argp, &pciinfo,  sizeof( cciss_pci_info_struct )))
646                         return  -EFAULT;
647                 return(0);
648         }       
649         case CCISS_GETINTINFO:
650         {
651                 cciss_coalint_struct intinfo;
652                 if (!arg) return -EINVAL;
653                 intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
654                 intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
655                 if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
656                         return -EFAULT;
657                 return(0);
658         }
659         case CCISS_SETINTINFO:
660         {
661                 cciss_coalint_struct intinfo;
662                 unsigned long flags;
663                 int i;
664
665                 if (!arg) return -EINVAL;       
666                 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
667                 if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
668                         return -EFAULT;
669                 if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
670
671                 {
672 //                      printk("cciss_ioctl: delay and count cannot be 0\n");
673                         return( -EINVAL);
674                 }
675                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
676                 /* Update the field, and then ring the doorbell */ 
677                 writel( intinfo.delay, 
678                         &(host->cfgtable->HostWrite.CoalIntDelay));
679                 writel( intinfo.count, 
680                         &(host->cfgtable->HostWrite.CoalIntCount));
681                 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
682
683                 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
684                         if (!(readl(host->vaddr + SA5_DOORBELL) 
685                                         & CFGTBL_ChangeReq))
686                                 break;
687                         /* delay and try again */
688                         udelay(1000);
689                 }       
690                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
691                 if (i >= MAX_IOCTL_CONFIG_WAIT)
692                         return -EAGAIN;
693                 return(0);
694         }
695         case CCISS_GETNODENAME:
696         {
697                 NodeName_type NodeName;
698                 int i; 
699
700                 if (!arg) return -EINVAL;
701                 for(i=0;i<16;i++)
702                         NodeName[i] = readb(&host->cfgtable->ServerName[i]);
703                 if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
704                         return  -EFAULT;
705                 return(0);
706         }
707         case CCISS_SETNODENAME:
708         {
709                 NodeName_type NodeName;
710                 unsigned long flags;
711                 int i;
712
713                 if (!arg) return -EINVAL;
714                 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
715                 
716                 if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
717                         return -EFAULT;
718
719                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
720
721                         /* Update the field, and then ring the doorbell */ 
722                 for(i=0;i<16;i++)
723                         writeb( NodeName[i], &host->cfgtable->ServerName[i]);
724                         
725                 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
726
727                 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
728                         if (!(readl(host->vaddr + SA5_DOORBELL) 
729                                         & CFGTBL_ChangeReq))
730                                 break;
731                         /* delay and try again */
732                         udelay(1000);
733                 }       
734                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
735                 if (i >= MAX_IOCTL_CONFIG_WAIT)
736                         return -EAGAIN;
737                 return(0);
738         }
739
740         case CCISS_GETHEARTBEAT:
741         {
742                 Heartbeat_type heartbeat;
743
744                 if (!arg) return -EINVAL;
745                 heartbeat = readl(&host->cfgtable->HeartBeat);
746                 if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
747                         return -EFAULT;
748                 return(0);
749         }
750         case CCISS_GETBUSTYPES:
751         {
752                 BusTypes_type BusTypes;
753
754                 if (!arg) return -EINVAL;
755                 BusTypes = readl(&host->cfgtable->BusTypes);
756                 if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
757                         return  -EFAULT;
758                 return(0);
759         }
760         case CCISS_GETFIRMVER:
761         {
762                 FirmwareVer_type firmware;
763
764                 if (!arg) return -EINVAL;
765                 memcpy(firmware, host->firm_ver, 4);
766
767                 if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
768                         return -EFAULT;
769                 return(0);
770         }
771         case CCISS_GETDRIVVER:
772         {
773                 DriverVer_type DriverVer = DRIVER_VERSION;
774
775                 if (!arg) return -EINVAL;
776
777                 if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
778                         return -EFAULT;
779                 return(0);
780         }
781
782         case CCISS_REVALIDVOLS:
783                 if (bdev != bdev->bd_contains || drv != host->drv)
784                         return -ENXIO;
785                 return revalidate_allvol(host);
786
787         case CCISS_GETLUNINFO: {
788                 LogvolInfo_struct luninfo;
789                 
790                 luninfo.LunID = drv->LunID;
791                 luninfo.num_opens = drv->usage_count;
792                 luninfo.num_parts = 0;
793                 if (copy_to_user(argp, &luninfo,
794                                 sizeof(LogvolInfo_struct)))
795                         return -EFAULT;
796                 return(0);
797         }
798         case CCISS_DEREGDISK:
799                 return deregister_disk(disk);
800
801         case CCISS_REGNEWD:
802                 return register_new_disk(host);
803
804         case CCISS_PASSTHRU:
805         {
806                 IOCTL_Command_struct iocommand;
807                 CommandList_struct *c;
808                 char    *buff = NULL;
809                 u64bit  temp64;
810                 unsigned long flags;
811                 DECLARE_COMPLETION(wait);
812
813                 if (!arg) return -EINVAL;
814         
815                 if (!capable(CAP_SYS_RAWIO)) return -EPERM;
816
817                 if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
818                         return -EFAULT;
819                 if((iocommand.buf_size < 1) && 
820                                 (iocommand.Request.Type.Direction != XFER_NONE))
821                 {       
822                         return -EINVAL;
823                 } 
824 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
825                 /* Check kmalloc limits */
826                 if(iocommand.buf_size > 128000)
827                         return -EINVAL;
828 #endif
829                 if(iocommand.buf_size > 0)
830                 {
831                         buff =  kmalloc(iocommand.buf_size, GFP_KERNEL);
832                         if( buff == NULL) 
833                                 return -EFAULT;
834                 }
835                 if (iocommand.Request.Type.Direction == XFER_WRITE)
836                 {
837                         /* Copy the data into the buffer we created */ 
838                         if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
839                         {
840                                 kfree(buff);
841                                 return -EFAULT;
842                         }
843                 } else {
844                         memset(buff, 0, iocommand.buf_size);
845                 }
846                 if ((c = cmd_alloc(host , 0)) == NULL)
847                 {
848                         kfree(buff);
849                         return -ENOMEM;
850                 }
851                         // Fill in the command type 
852                 c->cmd_type = CMD_IOCTL_PEND;
853                         // Fill in Command Header 
854                 c->Header.ReplyQueue = 0;  // unused in simple mode
855                 if( iocommand.buf_size > 0)     // buffer to fill 
856                 {
857                         c->Header.SGList = 1;
858                         c->Header.SGTotal= 1;
859                 } else  // no buffers to fill  
860                 {
861                         c->Header.SGList = 0;
862                         c->Header.SGTotal= 0;
863                 }
864                 c->Header.LUN = iocommand.LUN_info;
865                 c->Header.Tag.lower = c->busaddr;  // use the kernel address the cmd block for tag
866                 
867                 // Fill in Request block 
868                 c->Request = iocommand.Request; 
869         
870                 // Fill in the scatter gather information
871                 if (iocommand.buf_size > 0 ) 
872                 {
873                         temp64.val = pci_map_single( host->pdev, buff,
874                                         iocommand.buf_size, 
875                                 PCI_DMA_BIDIRECTIONAL); 
876                         c->SG[0].Addr.lower = temp64.val32.lower;
877                         c->SG[0].Addr.upper = temp64.val32.upper;
878                         c->SG[0].Len = iocommand.buf_size;
879                         c->SG[0].Ext = 0;  // we are not chaining
880                 }
881                 c->waiting = &wait;
882
883                 /* Put the request on the tail of the request queue */
884                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
885                 addQ(&host->reqQ, c);
886                 host->Qdepth++;
887                 start_io(host);
888                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
889
890                 wait_for_completion(&wait);
891
892                 /* unlock the buffers from DMA */
893                 temp64.val32.lower = c->SG[0].Addr.lower;
894                 temp64.val32.upper = c->SG[0].Addr.upper;
895                 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
896                         iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
897
898                 /* Copy the error information out */ 
899                 iocommand.error_info = *(c->err_info);
900                 if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
901                 {
902                         kfree(buff);
903                         cmd_free(host, c, 0);
904                         return( -EFAULT);       
905                 }       
906
907                 if (iocommand.Request.Type.Direction == XFER_READ)
908                 {
909                         /* Copy the data out of the buffer we created */
910                         if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
911                         {
912                                 kfree(buff);
913                                 cmd_free(host, c, 0);
914                                 return -EFAULT;
915                         }
916                 }
917                 kfree(buff);
918                 cmd_free(host, c, 0);
919                 return(0);
920         } 
921         case CCISS_BIG_PASSTHRU: {
922                 BIG_IOCTL_Command_struct *ioc;
923                 CommandList_struct *c;
924                 unsigned char **buff = NULL;
925                 int     *buff_size = NULL;
926                 u64bit  temp64;
927                 unsigned long flags;
928                 BYTE sg_used = 0;
929                 int status = 0;
930                 int i;
931                 DECLARE_COMPLETION(wait);
932                 __u32   left;
933                 __u32   sz;
934                 BYTE    __user *data_ptr;
935
936                 if (!arg)
937                         return -EINVAL;
938                 if (!capable(CAP_SYS_RAWIO))
939                         return -EPERM;
940                 ioc = (BIG_IOCTL_Command_struct *) 
941                         kmalloc(sizeof(*ioc), GFP_KERNEL);
942                 if (!ioc) {
943                         status = -ENOMEM;
944                         goto cleanup1;
945                 }
946                 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
947                         status = -EFAULT;
948                         goto cleanup1;
949                 }
950                 if ((ioc->buf_size < 1) &&
951                         (ioc->Request.Type.Direction != XFER_NONE)) {
952                                 status = -EINVAL;
953                                 goto cleanup1;
954                 }
955                 /* Check kmalloc limits  using all SGs */
956                 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
957                         status = -EINVAL;
958                         goto cleanup1;
959                 }
960                 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
961                         status = -EINVAL;
962                         goto cleanup1;
963                 }
964                 buff = (unsigned char **) kmalloc(MAXSGENTRIES * 
965                                 sizeof(char *), GFP_KERNEL);
966                 if (!buff) {
967                         status = -ENOMEM;
968                         goto cleanup1;
969                 }
970                 memset(buff, 0, MAXSGENTRIES);
971                 buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int), 
972                                         GFP_KERNEL);
973                 if (!buff_size) {
974                         status = -ENOMEM;
975                         goto cleanup1;
976                 }
977                 left = ioc->buf_size;
978                 data_ptr = ioc->buf;
979                 while (left) {
980                         sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
981                         buff_size[sg_used] = sz;
982                         buff[sg_used] = kmalloc(sz, GFP_KERNEL);
983                         if (buff[sg_used] == NULL) {
984                                 status = -ENOMEM;
985                                 goto cleanup1;
986                         }
987                         if (ioc->Request.Type.Direction == XFER_WRITE &&
988                                 copy_from_user(buff[sg_used], data_ptr, sz)) {
989                                         status = -ENOMEM;
990                                         goto cleanup1;                  
991                         } else {
992                                 memset(buff[sg_used], 0, sz);
993                         }
994                         left -= sz;
995                         data_ptr += sz;
996                         sg_used++;
997                 }
998                 if ((c = cmd_alloc(host , 0)) == NULL) {
999                         status = -ENOMEM;
1000                         goto cleanup1;  
1001                 }
1002                 c->cmd_type = CMD_IOCTL_PEND;
1003                 c->Header.ReplyQueue = 0;
1004                 
1005                 if( ioc->buf_size > 0) {
1006                         c->Header.SGList = sg_used;
1007                         c->Header.SGTotal= sg_used;
1008                 } else { 
1009                         c->Header.SGList = 0;
1010                         c->Header.SGTotal= 0;
1011                 }
1012                 c->Header.LUN = ioc->LUN_info;
1013                 c->Header.Tag.lower = c->busaddr;
1014                 
1015                 c->Request = ioc->Request;
1016                 if (ioc->buf_size > 0 ) {
1017                         int i;
1018                         for(i=0; i<sg_used; i++) {
1019                                 temp64.val = pci_map_single( host->pdev, buff[i],
1020                                         buff_size[i],
1021                                         PCI_DMA_BIDIRECTIONAL);
1022                                 c->SG[i].Addr.lower = temp64.val32.lower;
1023                                 c->SG[i].Addr.upper = temp64.val32.upper;
1024                                 c->SG[i].Len = buff_size[i];
1025                                 c->SG[i].Ext = 0;  /* we are not chaining */
1026                         }
1027                 }
1028                 c->waiting = &wait;
1029                 /* Put the request on the tail of the request queue */
1030                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1031                 addQ(&host->reqQ, c);
1032                 host->Qdepth++;
1033                 start_io(host);
1034                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1035                 wait_for_completion(&wait);
1036                 /* unlock the buffers from DMA */
1037                 for(i=0; i<sg_used; i++) {
1038                         temp64.val32.lower = c->SG[i].Addr.lower;
1039                         temp64.val32.upper = c->SG[i].Addr.upper;
1040                         pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
1041                                 buff_size[i], PCI_DMA_BIDIRECTIONAL);
1042                 }
1043                 /* Copy the error information out */
1044                 ioc->error_info = *(c->err_info);
1045                 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1046                         cmd_free(host, c, 0);
1047                         status = -EFAULT;
1048                         goto cleanup1;
1049                 }
1050                 if (ioc->Request.Type.Direction == XFER_READ) {
1051                         /* Copy the data out of the buffer we created */
1052                         BYTE __user *ptr = ioc->buf;
1053                         for(i=0; i< sg_used; i++) {
1054                                 if (copy_to_user(ptr, buff[i], buff_size[i])) {
1055                                         cmd_free(host, c, 0);
1056                                         status = -EFAULT;
1057                                         goto cleanup1;
1058                                 }
1059                                 ptr += buff_size[i];
1060                         }
1061                 }
1062                 cmd_free(host, c, 0);
1063                 status = 0;
1064 cleanup1:
1065                 if (buff) {
1066                         for(i=0; i<sg_used; i++)
1067                                 if(buff[i] != NULL)
1068                                         kfree(buff[i]);
1069                         kfree(buff);
1070                 }
1071                 if (buff_size)
1072                         kfree(buff_size);
1073                 if (ioc)
1074                         kfree(ioc);
1075                 return(status);
1076         }
1077         default:
1078                 return -ENOTTY;
1079         }
1080         
1081 }
1082
1083 /*
1084  * revalidate_allvol is for online array config utilities.  After a
1085  * utility reconfigures the drives in the array, it can use this function
1086  * (through an ioctl) to make the driver zap any previous disk structs for
1087  * that controller and get new ones.
1088  *
1089  * Right now I'm using the getgeometry() function to do this, but this
1090  * function should probably be finer grained and allow you to revalidate one
1091  * particualar logical volume (instead of all of them on a particular
1092  * controller).
1093  */
1094 static int revalidate_allvol(ctlr_info_t *host)
1095 {
1096         int ctlr = host->ctlr, i;
1097         unsigned long flags;
1098
1099         spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1100         if (host->usage_count > 1) {
1101                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1102                 printk(KERN_WARNING "cciss: Device busy for volume"
1103                         " revalidation (usage=%d)\n", host->usage_count);
1104                 return -EBUSY;
1105         }
1106         host->usage_count++;
1107         spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1108
1109         for(i=0; i< NWD; i++) {
1110                 struct gendisk *disk = host->gendisk[i];
1111                 if (disk->flags & GENHD_FL_UP)
1112                         del_gendisk(disk);
1113         }
1114
1115         /*
1116          * Set the partition and block size structures for all volumes
1117          * on this controller to zero.  We will reread all of this data
1118          */
1119         memset(host->drv,        0, sizeof(drive_info_struct)
1120                                                 * CISS_MAX_LUN);
1121         /*
1122          * Tell the array controller not to give us any interrupts while
1123          * we check the new geometry.  Then turn interrupts back on when
1124          * we're done.
1125          */
1126         host->access.set_intr_mask(host, CCISS_INTR_OFF);
1127         cciss_getgeometry(ctlr);
1128         host->access.set_intr_mask(host, CCISS_INTR_ON);
1129
1130         /* Loop through each real device */ 
1131         for (i = 0; i < NWD; i++) {
1132                 struct gendisk *disk = host->gendisk[i];
1133                 drive_info_struct *drv = &(host->drv[i]);
1134                 /* we must register the controller even if no disks exist */
1135                 /* this is for the online array utilities */
1136                 if (!drv->heads && i)
1137                         continue;
1138                 blk_queue_hardsect_size(drv->queue, drv->block_size);
1139                 set_capacity(disk, drv->nr_blocks);
1140                 add_disk(disk);
1141         }
1142         host->usage_count--;
1143         return 0;
1144 }
1145
1146 static int deregister_disk(struct gendisk *disk)
1147 {
1148         unsigned long flags;
1149         ctlr_info_t *h = get_host(disk);
1150         drive_info_struct *drv = get_drv(disk);
1151         int ctlr = h->ctlr;
1152
1153         if (!capable(CAP_SYS_RAWIO))
1154                 return -EPERM;
1155
1156         spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1157         /* make sure logical volume is NOT is use */
1158         if( drv->usage_count > 1) {
1159                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1160                 return -EBUSY;
1161         }
1162         drv->usage_count++;
1163         spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1164
1165         /* invalidate the devices and deregister the disk */ 
1166         if (disk->flags & GENHD_FL_UP)
1167                 del_gendisk(disk);
1168         /* check to see if it was the last disk */
1169         if (drv == h->drv + h->highest_lun) {
1170                 /* if so, find the new hightest lun */
1171                 int i, newhighest =-1;
1172                 for(i=0; i<h->highest_lun; i++) {
1173                         /* if the disk has size > 0, it is available */
1174                         if (h->drv[i].nr_blocks)
1175                                 newhighest = i;
1176                 }
1177                 h->highest_lun = newhighest;
1178                                 
1179         }
1180         --h->num_luns;
1181         /* zero out the disk size info */ 
1182         drv->nr_blocks = 0;
1183         drv->block_size = 0;
1184         drv->cylinders = 0;
1185         drv->LunID = 0;
1186         return(0);
1187 }
1188 static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
1189         size_t size,
1190         unsigned int use_unit_num, /* 0: address the controller,
1191                                       1: address logical volume log_unit,
1192                                       2: periph device address is scsi3addr */
1193         unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
1194         int cmd_type)
1195 {
1196         ctlr_info_t *h= hba[ctlr];
1197         u64bit buff_dma_handle;
1198         int status = IO_OK;
1199
1200         c->cmd_type = CMD_IOCTL_PEND;
1201         c->Header.ReplyQueue = 0;
1202         if( buff != NULL) {
1203                 c->Header.SGList = 1;
1204                 c->Header.SGTotal= 1;
1205         } else {
1206                 c->Header.SGList = 0;
1207                 c->Header.SGTotal= 0;
1208         }
1209         c->Header.Tag.lower = c->busaddr;
1210
1211         c->Request.Type.Type = cmd_type;
1212         if (cmd_type == TYPE_CMD) {
1213                 switch(cmd) {
1214                 case  CISS_INQUIRY:
1215                         /* If the logical unit number is 0 then, this is going
1216                         to controller so It's a physical command
1217                         mode = 0 target = 0.  So we have nothing to write.
1218                         otherwise, if use_unit_num == 1,
1219                         mode = 1(volume set addressing) target = LUNID
1220                         otherwise, if use_unit_num == 2,
1221                         mode = 0(periph dev addr) target = scsi3addr */
1222                         if (use_unit_num == 1) {
1223                                 c->Header.LUN.LogDev.VolId=
1224                                         h->drv[log_unit].LunID;
1225                                 c->Header.LUN.LogDev.Mode = 1;
1226                         } else if (use_unit_num == 2) {
1227                                 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
1228                                 c->Header.LUN.LogDev.Mode = 0;
1229                         }
1230                         /* are we trying to read a vital product page */
1231                         if(page_code != 0) {
1232                                 c->Request.CDB[1] = 0x01;
1233                                 c->Request.CDB[2] = page_code;
1234                         }
1235                         c->Request.CDBLen = 6;
1236                         c->Request.Type.Attribute = ATTR_SIMPLE;  
1237                         c->Request.Type.Direction = XFER_READ;
1238                         c->Request.Timeout = 0;
1239                         c->Request.CDB[0] =  CISS_INQUIRY;
1240                         c->Request.CDB[4] = size  & 0xFF;  
1241                 break;
1242                 case CISS_REPORT_LOG:
1243                 case CISS_REPORT_PHYS:
1244                         /* Talking to controller so It's a physical command
1245                            mode = 00 target = 0.  Nothing to write.
1246                         */
1247                         c->Request.CDBLen = 12;
1248                         c->Request.Type.Attribute = ATTR_SIMPLE;
1249                         c->Request.Type.Direction = XFER_READ;
1250                         c->Request.Timeout = 0;
1251                         c->Request.CDB[0] = cmd;
1252                         c->Request.CDB[6] = (size >> 24) & 0xFF;  //MSB
1253                         c->Request.CDB[7] = (size >> 16) & 0xFF;
1254                         c->Request.CDB[8] = (size >> 8) & 0xFF;
1255                         c->Request.CDB[9] = size & 0xFF;
1256                         break;
1257
1258                 case CCISS_READ_CAPACITY:
1259                         c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1260                         c->Header.LUN.LogDev.Mode = 1;
1261                         c->Request.CDBLen = 10;
1262                         c->Request.Type.Attribute = ATTR_SIMPLE;
1263                         c->Request.Type.Direction = XFER_READ;
1264                         c->Request.Timeout = 0;
1265                         c->Request.CDB[0] = cmd;
1266                 break;
1267                 case CCISS_CACHE_FLUSH:
1268                         c->Request.CDBLen = 12;
1269                         c->Request.Type.Attribute = ATTR_SIMPLE;
1270                         c->Request.Type.Direction = XFER_WRITE;
1271                         c->Request.Timeout = 0;
1272                         c->Request.CDB[0] = BMIC_WRITE;
1273                         c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1274                 break;
1275                 default:
1276                         printk(KERN_WARNING
1277                                 "cciss%d:  Unknown Command 0x%c\n", ctlr, cmd);
1278                         return(IO_ERROR);
1279                 }
1280         } else if (cmd_type == TYPE_MSG) {
1281                 switch (cmd) {
1282                 case 3: /* No-Op message */
1283                         c->Request.CDBLen = 1;
1284                         c->Request.Type.Attribute = ATTR_SIMPLE;
1285                         c->Request.Type.Direction = XFER_WRITE;
1286                         c->Request.Timeout = 0;
1287                         c->Request.CDB[0] = cmd;
1288                         break;
1289                 default:
1290                         printk(KERN_WARNING
1291                                 "cciss%d: unknown message type %d\n",
1292                                 ctlr, cmd);
1293                         return IO_ERROR;
1294                 }
1295         } else {
1296                 printk(KERN_WARNING
1297                         "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1298                 return IO_ERROR;
1299         }
1300         /* Fill in the scatter gather information */
1301         if (size > 0) {
1302                 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1303                         buff, size, PCI_DMA_BIDIRECTIONAL);
1304                 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1305                 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1306                 c->SG[0].Len = size;
1307                 c->SG[0].Ext = 0;  /* we are not chaining */
1308         }
1309         return status;
1310 }
1311 static int sendcmd_withirq(__u8 cmd,
1312         int     ctlr,
1313         void    *buff,
1314         size_t  size,
1315         unsigned int use_unit_num,
1316         unsigned int log_unit,
1317         __u8    page_code,
1318         int cmd_type)
1319 {
1320         ctlr_info_t *h = hba[ctlr];
1321         CommandList_struct *c;
1322         u64bit  buff_dma_handle;
1323         unsigned long flags;
1324         int return_status;
1325         DECLARE_COMPLETION(wait);
1326         
1327         if ((c = cmd_alloc(h , 0)) == NULL)
1328                 return -ENOMEM;
1329         return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1330                 log_unit, page_code, NULL, cmd_type);
1331         if (return_status != IO_OK) {
1332                 cmd_free(h, c, 0);
1333                 return return_status;
1334         }
1335 resend_cmd2:
1336         c->waiting = &wait;
1337         
1338         /* Put the request on the tail of the queue and send it */
1339         spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1340         addQ(&h->reqQ, c);
1341         h->Qdepth++;
1342         start_io(h);
1343         spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1344         
1345         wait_for_completion(&wait);
1346
1347         if(c->err_info->CommandStatus != 0) 
1348         { /* an error has occurred */ 
1349                 switch(c->err_info->CommandStatus)
1350                 {
1351                         case CMD_TARGET_STATUS:
1352                                 printk(KERN_WARNING "cciss: cmd %p has "
1353                                         " completed with errors\n", c);
1354                                 if( c->err_info->ScsiStatus)
1355                                 {
1356                                         printk(KERN_WARNING "cciss: cmd %p "
1357                                         "has SCSI Status = %x\n",
1358                                                 c,  
1359                                                 c->err_info->ScsiStatus);
1360                                 }
1361
1362                         break;
1363                         case CMD_DATA_UNDERRUN:
1364                         case CMD_DATA_OVERRUN:
1365                         /* expected for inquire and report lun commands */
1366                         break;
1367                         case CMD_INVALID:
1368                                 printk(KERN_WARNING "cciss: Cmd %p is "
1369                                         "reported invalid\n", c);
1370                                 return_status = IO_ERROR;
1371                         break;
1372                         case CMD_PROTOCOL_ERR:
1373                                 printk(KERN_WARNING "cciss: cmd %p has "
1374                                         "protocol error \n", c);
1375                                 return_status = IO_ERROR;
1376                         break;
1377 case CMD_HARDWARE_ERR:
1378                                 printk(KERN_WARNING "cciss: cmd %p had " 
1379                                         " hardware error\n", c);
1380                                 return_status = IO_ERROR;
1381                         break;
1382                         case CMD_CONNECTION_LOST:
1383                                 printk(KERN_WARNING "cciss: cmd %p had "
1384                                         "connection lost\n", c);
1385                                 return_status = IO_ERROR;
1386                         break;
1387                         case CMD_ABORTED:
1388                                 printk(KERN_WARNING "cciss: cmd %p was "
1389                                         "aborted\n", c);
1390                                 return_status = IO_ERROR;
1391                         break;
1392                         case CMD_ABORT_FAILED:
1393                                 printk(KERN_WARNING "cciss: cmd %p reports "
1394                                         "abort failed\n", c);
1395                                 return_status = IO_ERROR;
1396                         break;
1397                         case CMD_UNSOLICITED_ABORT:
1398                                 printk(KERN_WARNING 
1399                                         "cciss%d: unsolicited abort %p\n",
1400                                         ctlr, c);
1401                                 if (c->retry_count < MAX_CMD_RETRIES) {
1402                                         printk(KERN_WARNING 
1403                                                 "cciss%d: retrying %p\n", 
1404                                                 ctlr, c);
1405                                         c->retry_count++;
1406                                         /* erase the old error information */
1407                                         memset(c->err_info, 0,
1408                                                 sizeof(ErrorInfo_struct));
1409                                         return_status = IO_OK;
1410                                         INIT_COMPLETION(wait);
1411                                         goto resend_cmd2;
1412                                 }
1413                                 return_status = IO_ERROR;
1414                         break;
1415                         default:
1416                                 printk(KERN_WARNING "cciss: cmd %p returned "
1417                                         "unknown status %x\n", c, 
1418                                                 c->err_info->CommandStatus); 
1419                                 return_status = IO_ERROR;
1420                 }
1421         }       
1422         /* unlock the buffers from DMA */
1423         pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1424                         size, PCI_DMA_BIDIRECTIONAL);
1425         cmd_free(h, c, 0);
1426         return(return_status);
1427
1428 }
1429 static void cciss_geometry_inquiry(int ctlr, int logvol,
1430                         int withirq, unsigned int total_size,
1431                         unsigned int block_size, InquiryData_struct *inq_buff,
1432                         drive_info_struct *drv)
1433 {
1434         int return_code;
1435         memset(inq_buff, 0, sizeof(InquiryData_struct));
1436         if (withirq)
1437                 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1438                         inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1439         else
1440                 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1441                         sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1442         if (return_code == IO_OK) {
1443                 if(inq_buff->data_byte[8] == 0xFF) {
1444                         printk(KERN_WARNING
1445                                 "cciss: reading geometry failed, volume "
1446                                 "does not support reading geometry\n");
1447                         drv->block_size = block_size;
1448                         drv->nr_blocks = total_size;
1449                         drv->heads = 255;
1450                         drv->sectors = 32; // Sectors per track
1451                         drv->cylinders = total_size / 255 / 32;
1452                 } else {
1453                         unsigned int t;
1454
1455                         drv->block_size = block_size;
1456                         drv->nr_blocks = total_size;
1457                         drv->heads = inq_buff->data_byte[6];
1458                         drv->sectors = inq_buff->data_byte[7];
1459                         drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1460                         drv->cylinders += inq_buff->data_byte[5];
1461                         drv->raid_level = inq_buff->data_byte[8];
1462                         t = drv->heads * drv->sectors;
1463                         if (t > 1) {
1464                                 drv->cylinders = total_size/t;
1465                         }
1466                 }
1467         } else { /* Get geometry failed */
1468                 printk(KERN_WARNING "cciss: reading geometry failed\n");
1469         }
1470         printk(KERN_INFO "      heads= %d, sectors= %d, cylinders= %d\n\n",
1471                 drv->heads, drv->sectors, drv->cylinders);
1472 }
1473 static void
1474 cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1475                 int withirq, unsigned int *total_size, unsigned int *block_size)
1476 {
1477         int return_code;
1478         memset(buf, 0, sizeof(*buf));
1479         if (withirq)
1480                 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1481                         ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1482         else
1483                 return_code = sendcmd(CCISS_READ_CAPACITY,
1484                         ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1485         if (return_code == IO_OK) {
1486                 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1487                 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1488         } else { /* read capacity command failed */
1489                 printk(KERN_WARNING "cciss: read capacity failed\n");
1490                 *total_size = 0;
1491                 *block_size = BLOCK_SIZE;
1492         }
1493         printk(KERN_INFO "      blocks= %u block_size= %d\n",
1494                 *total_size, *block_size);
1495         return;
1496 }
1497
1498 static int register_new_disk(ctlr_info_t *h)
1499 {
1500         struct gendisk *disk;
1501         int ctlr = h->ctlr;
1502         int i;
1503         int num_luns;
1504         int logvol;
1505         int new_lun_found = 0;
1506         int new_lun_index = 0;
1507         int free_index_found = 0;
1508         int free_index = 0;
1509         ReportLunData_struct *ld_buff = NULL;
1510         ReadCapdata_struct *size_buff = NULL;
1511         InquiryData_struct *inq_buff = NULL;
1512         int return_code;
1513         int listlength = 0;
1514         __u32 lunid = 0;
1515         unsigned int block_size;
1516         unsigned int total_size;
1517
1518         if (!capable(CAP_SYS_RAWIO))
1519                 return -EPERM;
1520         /* if we have no space in our disk array left to add anything */
1521         if(  h->num_luns >= CISS_MAX_LUN)
1522                 return -EINVAL;
1523         
1524         ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1525         if (ld_buff == NULL)
1526                 goto mem_msg;
1527         memset(ld_buff, 0, sizeof(ReportLunData_struct));
1528         size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1529         if (size_buff == NULL)
1530                 goto mem_msg;
1531         inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1532         if (inq_buff == NULL)
1533                 goto mem_msg;
1534         
1535         return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, 
1536                         sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);
1537
1538         if( return_code == IO_OK)
1539         {
1540                 
1541                 // printk("LUN Data\n--------------------------\n");
1542
1543                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
1544                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
1545                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;  
1546                 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1547         } else /* reading number of logical volumes failed */
1548         {
1549                 printk(KERN_WARNING "cciss: report logical volume"
1550                         " command failed\n");
1551                 listlength = 0;
1552                 goto free_err;
1553         }
1554         num_luns = listlength / 8; // 8 bytes pre entry
1555         if (num_luns > CISS_MAX_LUN)
1556         {
1557                 num_luns = CISS_MAX_LUN;
1558         }
1559 #ifdef CCISS_DEBUG
1560         printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
1561                 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
1562                 ld_buff->LUNListLength[3],  num_luns);
1563 #endif 
1564         for(i=0; i<  num_luns; i++)
1565         {
1566                 int j;
1567                 int lunID_found = 0;
1568
1569                 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
1570                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
1571                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
1572                 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1573                 
1574                 /* check to see if this is a new lun */ 
1575                 for(j=0; j <= h->highest_lun; j++)
1576                 {
1577 #ifdef CCISS_DEBUG
1578                         printk("Checking %d %x against %x\n", j,h->drv[j].LunID,
1579                                                 lunid);
1580 #endif /* CCISS_DEBUG */
1581                         if (h->drv[j].LunID == lunid)
1582                         {
1583                                 lunID_found = 1;
1584                                 break;
1585                         }
1586                         
1587                 }
1588                 if( lunID_found == 1)
1589                         continue;
1590                 else
1591                 {       /* It is the new lun we have been looking for */
1592 #ifdef CCISS_DEBUG
1593                         printk("new lun found at %d\n", i);
1594 #endif /* CCISS_DEBUG */
1595                         new_lun_index = i;
1596                         new_lun_found = 1;
1597                         break;  
1598                 }
1599          }
1600          if (!new_lun_found)
1601          {
1602                 printk(KERN_WARNING "cciss:  New Logical Volume not found\n");
1603                 goto free_err;
1604          }
1605          /* Now find the free index     */
1606         for(i=0; i <CISS_MAX_LUN; i++)
1607         {
1608 #ifdef CCISS_DEBUG
1609                 printk("Checking Index %d\n", i);
1610 #endif /* CCISS_DEBUG */
1611                 if(h->drv[i].LunID == 0)
1612                 {
1613 #ifdef CCISS_DEBUG
1614                         printk("free index found at %d\n", i);
1615 #endif /* CCISS_DEBUG */
1616                         free_index_found = 1;
1617                         free_index = i;
1618                         break;
1619                 }
1620         }
1621         if (!free_index_found)
1622         {
1623                 printk(KERN_WARNING "cciss: unable to find free slot for disk\n");
1624                 goto free_err;
1625          }
1626
1627         logvol = free_index;
1628         h->drv[logvol].LunID = lunid;
1629                 /* there could be gaps in lun numbers, track hightest */
1630         if(h->highest_lun < lunid)
1631                 h->highest_lun = logvol;
1632         cciss_read_capacity(ctlr, logvol, size_buff, 1,
1633                 &total_size, &block_size);
1634         cciss_geometry_inquiry(ctlr, logvol, 1, total_size, block_size,
1635                         inq_buff, &h->drv[logvol]);
1636         h->drv[logvol].usage_count = 0;
1637         ++h->num_luns;
1638         /* setup partitions per disk */
1639         disk = h->gendisk[logvol];
1640         set_capacity(disk, h->drv[logvol].nr_blocks);
1641         /* if it's the controller it's already added */
1642         if(logvol)
1643                 add_disk(disk);
1644 freeret:
1645         kfree(ld_buff);
1646         kfree(size_buff);
1647         kfree(inq_buff);
1648         return (logvol);
1649 mem_msg:
1650         printk(KERN_ERR "cciss: out of memory\n");
1651 free_err:
1652         logvol = -1;
1653         goto freeret;
1654 }
1655
1656 static int cciss_revalidate(struct gendisk *disk)
1657 {
1658         ctlr_info_t *h = get_host(disk);
1659         drive_info_struct *drv = get_drv(disk);
1660         int logvol;
1661         int FOUND=0;
1662         unsigned int block_size;
1663         unsigned int total_size;
1664         ReadCapdata_struct *size_buff = NULL;
1665         InquiryData_struct *inq_buff = NULL;
1666
1667         for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1668         {
1669                 if(h->drv[logvol].LunID == drv->LunID) {
1670                         FOUND=1;
1671                         break;
1672                 }
1673         }
1674
1675         if (!FOUND) return 1;
1676
1677         size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1678         if (size_buff == NULL)
1679         {
1680                 printk(KERN_WARNING "cciss: out of memory\n");
1681                 return 1;
1682         }
1683         inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1684         if (inq_buff == NULL)
1685         {
1686                 printk(KERN_WARNING "cciss: out of memory\n");
1687                 kfree(size_buff);
1688                 return 1;
1689         }
1690
1691         cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1692         cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1693
1694         blk_queue_hardsect_size(drv->queue, drv->block_size);
1695         set_capacity(disk, drv->nr_blocks);
1696
1697         kfree(size_buff);
1698         kfree(inq_buff);
1699         return 0;
1700 }
1701
1702 /*
1703  *   Wait polling for a command to complete.
1704  *   The memory mapped FIFO is polled for the completion.
1705  *   Used only at init time, interrupts from the HBA are disabled.
1706  */
1707 static unsigned long pollcomplete(int ctlr)
1708 {
1709         unsigned long done;
1710         int i;
1711
1712         /* Wait (up to 20 seconds) for a command to complete */
1713
1714         for (i = 20 * HZ; i > 0; i--) {
1715                 done = hba[ctlr]->access.command_completed(hba[ctlr]);
1716                 if (done == FIFO_EMPTY)
1717                         schedule_timeout_uninterruptible(1);
1718                 else
1719                         return (done);
1720         }
1721         /* Invalid address to tell caller we ran out of time */
1722         return 1;
1723 }
1724 /*
1725  * Send a command to the controller, and wait for it to complete.  
1726  * Only used at init time. 
1727  */
1728 static int sendcmd(
1729         __u8    cmd,
1730         int     ctlr,
1731         void    *buff,
1732         size_t  size,
1733         unsigned int use_unit_num, /* 0: address the controller,
1734                                       1: address logical volume log_unit, 
1735                                       2: periph device address is scsi3addr */
1736         unsigned int log_unit,
1737         __u8    page_code,
1738         unsigned char *scsi3addr,
1739         int cmd_type)
1740 {
1741         CommandList_struct *c;
1742         int i;
1743         unsigned long complete;
1744         ctlr_info_t *info_p= hba[ctlr];
1745         u64bit buff_dma_handle;
1746         int status;
1747
1748         if ((c = cmd_alloc(info_p, 1)) == NULL) {
1749                 printk(KERN_WARNING "cciss: unable to get memory");
1750                 return(IO_ERROR);
1751         }
1752         status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1753                 log_unit, page_code, scsi3addr, cmd_type);
1754         if (status != IO_OK) {
1755                 cmd_free(info_p, c, 1);
1756                 return status;
1757         }
1758 resend_cmd1:
1759         /*
1760          * Disable interrupt
1761          */
1762 #ifdef CCISS_DEBUG
1763         printk(KERN_DEBUG "cciss: turning intr off\n");
1764 #endif /* CCISS_DEBUG */ 
1765         info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1766         
1767         /* Make sure there is room in the command FIFO */
1768         /* Actually it should be completely empty at this time. */
1769         for (i = 200000; i > 0; i--) 
1770         {
1771                 /* if fifo isn't full go */
1772                 if (!(info_p->access.fifo_full(info_p))) 
1773                 {
1774                         
1775                         break;
1776                 }
1777                 udelay(10);
1778                 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
1779                         " waiting!\n", ctlr);
1780         }
1781         /*
1782          * Send the cmd
1783          */
1784         info_p->access.submit_command(info_p, c);
1785         complete = pollcomplete(ctlr);
1786
1787 #ifdef CCISS_DEBUG
1788         printk(KERN_DEBUG "cciss: command completed\n");
1789 #endif /* CCISS_DEBUG */
1790
1791         if (complete != 1) {
1792                 if ( (complete & CISS_ERROR_BIT)
1793                      && (complete & ~CISS_ERROR_BIT) == c->busaddr)
1794                      {
1795                         /* if data overrun or underun on Report command 
1796                                 ignore it 
1797                         */
1798                         if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
1799                              (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
1800                              (c->Request.CDB[0] == CISS_INQUIRY)) &&
1801                                 ((c->err_info->CommandStatus == 
1802                                         CMD_DATA_OVERRUN) || 
1803                                  (c->err_info->CommandStatus == 
1804                                         CMD_DATA_UNDERRUN)
1805                                 ))
1806                         {
1807                                 complete = c->busaddr;
1808                         } else {
1809                                 if (c->err_info->CommandStatus ==
1810                                                 CMD_UNSOLICITED_ABORT) {
1811                                         printk(KERN_WARNING "cciss%d: "
1812                                                 "unsolicited abort %p\n",
1813                                                 ctlr, c);
1814                                         if (c->retry_count < MAX_CMD_RETRIES) {
1815                                                 printk(KERN_WARNING
1816                                                    "cciss%d: retrying %p\n",
1817                                                    ctlr, c);
1818                                                 c->retry_count++;
1819                                                 /* erase the old error */
1820                                                 /* information */
1821                                                 memset(c->err_info, 0,
1822                                                    sizeof(ErrorInfo_struct));
1823                                                 goto resend_cmd1;
1824                                         } else {
1825                                                 printk(KERN_WARNING
1826                                                    "cciss%d: retried %p too "
1827                                                    "many times\n", ctlr, c);
1828                                                 status = IO_ERROR;
1829                                                 goto cleanup1;
1830                                         }
1831                                 }
1832                                 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1833                                 " Error %x \n", ctlr, 
1834                                         c->err_info->CommandStatus); 
1835                                 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1836                                 " offensive info\n"
1837                                 "  size %x\n   num %x   value %x\n", ctlr,
1838                                   c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
1839                                   c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
1840                                   c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
1841                                 status = IO_ERROR;
1842                                 goto cleanup1;
1843                         }
1844                 }
1845                 if (complete != c->busaddr) {
1846                         printk( KERN_WARNING "cciss cciss%d: SendCmd "
1847                       "Invalid command list address returned! (%lx)\n",
1848                                 ctlr, complete);
1849                         status = IO_ERROR;
1850                         goto cleanup1;
1851                 }
1852         } else {
1853                 printk( KERN_WARNING
1854                         "cciss cciss%d: SendCmd Timeout out, "
1855                         "No command list address returned!\n",
1856                         ctlr);
1857                 status = IO_ERROR;
1858         }
1859                 
1860 cleanup1:       
1861         /* unlock the data buffer from DMA */
1862         pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
1863                                 size, PCI_DMA_BIDIRECTIONAL);
1864         cmd_free(info_p, c, 1);
1865         return (status);
1866
1867 /*
1868  * Map (physical) PCI mem into (virtual) kernel space
1869  */
1870 static void __iomem *remap_pci_mem(ulong base, ulong size)
1871 {
1872         ulong page_base        = ((ulong) base) & PAGE_MASK;
1873         ulong page_offs        = ((ulong) base) - page_base;
1874         void __iomem *page_remapped = ioremap(page_base, page_offs+size);
1875
1876         return page_remapped ? (page_remapped + page_offs) : NULL;
1877 }
1878
1879 /* 
1880  * Takes jobs of the Q and sends them to the hardware, then puts it on 
1881  * the Q to wait for completion. 
1882  */ 
1883 static void start_io( ctlr_info_t *h)
1884 {
1885         CommandList_struct *c;
1886         
1887         while(( c = h->reqQ) != NULL )
1888         {
1889                 /* can't do anything if fifo is full */
1890                 if ((h->access.fifo_full(h))) {
1891                         printk(KERN_WARNING "cciss: fifo full\n");
1892                         break;
1893                 }
1894
1895                 /* Get the frist entry from the Request Q */ 
1896                 removeQ(&(h->reqQ), c);
1897                 h->Qdepth--;
1898         
1899                 /* Tell the controller execute command */ 
1900                 h->access.submit_command(h, c);
1901                 
1902                 /* Put job onto the completed Q */ 
1903                 addQ (&(h->cmpQ), c); 
1904         }
1905 }
1906
1907 static inline void complete_buffers(struct bio *bio, int status)
1908 {
1909         while (bio) {
1910                 struct bio *xbh = bio->bi_next; 
1911                 int nr_sectors = bio_sectors(bio);
1912
1913                 bio->bi_next = NULL; 
1914                 blk_finished_io(len);
1915                 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
1916                 bio = xbh;
1917         }
1918
1919
1920 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
1921 /* Zeros out the error record and then resends the command back */
1922 /* to the controller */
1923 static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
1924 {
1925         /* erase the old error information */
1926         memset(c->err_info, 0, sizeof(ErrorInfo_struct));
1927
1928         /* add it to software queue and then send it to the controller */
1929         addQ(&(h->reqQ),c);
1930         h->Qdepth++;
1931         if(h->Qdepth > h->maxQsinceinit)
1932                 h->maxQsinceinit = h->Qdepth;
1933
1934         start_io(h);
1935 }
1936 /* checks the status of the job and calls complete buffers to mark all 
1937  * buffers for the completed job. 
1938  */ 
1939 static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
1940                 int timeout)
1941 {
1942         int status = 1;
1943         int i;
1944         int retry_cmd = 0;
1945         u64bit temp64;
1946                 
1947         if (timeout)
1948                 status = 0; 
1949
1950         if(cmd->err_info->CommandStatus != 0) 
1951         { /* an error has occurred */ 
1952                 switch(cmd->err_info->CommandStatus)
1953                 {
1954                         unsigned char sense_key;
1955                         case CMD_TARGET_STATUS:
1956                                 status = 0;
1957                         
1958                                 if( cmd->err_info->ScsiStatus == 0x02)
1959                                 {
1960                                         printk(KERN_WARNING "cciss: cmd %p "
1961                                                 "has CHECK CONDITION "
1962                                                 " byte 2 = 0x%x\n", cmd,
1963                                                 cmd->err_info->SenseInfo[2]
1964                                         );
1965                                         /* check the sense key */
1966                                         sense_key = 0xf & 
1967                                                 cmd->err_info->SenseInfo[2];
1968                                         /* no status or recovered error */
1969                                         if((sense_key == 0x0) ||
1970                                             (sense_key == 0x1))
1971                                         {
1972                                                         status = 1;
1973                                         }
1974                                 } else
1975                                 {
1976                                         printk(KERN_WARNING "cciss: cmd %p "
1977                                                 "has SCSI Status 0x%x\n",
1978                                                 cmd, cmd->err_info->ScsiStatus);
1979                                 }
1980                         break;
1981                         case CMD_DATA_UNDERRUN:
1982                                 printk(KERN_WARNING "cciss: cmd %p has"
1983                                         " completed with data underrun "
1984                                         "reported\n", cmd);
1985                         break;
1986                         case CMD_DATA_OVERRUN:
1987                                 printk(KERN_WARNING "cciss: cmd %p has"
1988                                         " completed with data overrun "
1989                                         "reported\n", cmd);
1990                         break;
1991                         case CMD_INVALID:
1992                                 printk(KERN_WARNING "cciss: cmd %p is "
1993                                         "reported invalid\n", cmd);
1994                                 status = 0;
1995                         break;
1996                         case CMD_PROTOCOL_ERR:
1997                                 printk(KERN_WARNING "cciss: cmd %p has "
1998                                         "protocol error \n", cmd);
1999                                 status = 0;
2000                         break;
2001                         case CMD_HARDWARE_ERR:
2002                                 printk(KERN_WARNING "cciss: cmd %p had " 
2003                                         " hardware error\n", cmd);
2004                                 status = 0;
2005                         break;
2006                         case CMD_CONNECTION_LOST:
2007                                 printk(KERN_WARNING "cciss: cmd %p had "
2008                                         "connection lost\n", cmd);
2009                                 status=0;
2010                         break;
2011                         case CMD_ABORTED:
2012                                 printk(KERN_WARNING "cciss: cmd %p was "
2013                                         "aborted\n", cmd);
2014                                 status=0;
2015                         break;
2016                         case CMD_ABORT_FAILED:
2017                                 printk(KERN_WARNING "cciss: cmd %p reports "
2018                                         "abort failed\n", cmd);
2019                                 status=0;
2020                         break;
2021                         case CMD_UNSOLICITED_ABORT:
2022                                 printk(KERN_WARNING "cciss%d: unsolicited "
2023                                         "abort %p\n", h->ctlr, cmd);
2024                                 if (cmd->retry_count < MAX_CMD_RETRIES) {
2025                                         retry_cmd=1;
2026                                         printk(KERN_WARNING
2027                                                 "cciss%d: retrying %p\n",
2028                                                 h->ctlr, cmd);
2029                                         cmd->retry_count++;
2030                                 } else
2031                                         printk(KERN_WARNING
2032                                                 "cciss%d: %p retried too "
2033                                                 "many times\n", h->ctlr, cmd);
2034                                 status=0;
2035                         break;
2036                         case CMD_TIMEOUT:
2037                                 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2038                                         cmd);
2039                                 status=0;
2040                         break;
2041                         default:
2042                                 printk(KERN_WARNING "cciss: cmd %p returned "
2043                                         "unknown status %x\n", cmd, 
2044                                                 cmd->err_info->CommandStatus); 
2045                                 status=0;
2046                 }
2047         }
2048         /* We need to return this command */
2049         if(retry_cmd) {
2050                 resend_cciss_cmd(h,cmd);
2051                 return;
2052         }       
2053         /* command did not need to be retried */
2054         /* unmap the DMA mapping for all the scatter gather elements */
2055         for(i=0; i<cmd->Header.SGList; i++) {
2056                 temp64.val32.lower = cmd->SG[i].Addr.lower;
2057                 temp64.val32.upper = cmd->SG[i].Addr.upper;
2058                 pci_unmap_page(hba[cmd->ctlr]->pdev,
2059                         temp64.val, cmd->SG[i].Len,
2060                         (cmd->Request.Type.Direction == XFER_READ) ?
2061                                 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2062         }
2063         complete_buffers(cmd->rq->bio, status);
2064
2065 #ifdef CCISS_DEBUG
2066         printk("Done with %p\n", cmd->rq);
2067 #endif /* CCISS_DEBUG */ 
2068
2069         end_that_request_last(cmd->rq);
2070         cmd_free(h,cmd,1);
2071 }
2072
2073 /* 
2074  * Get a request and submit it to the controller. 
2075  */
2076 static void do_cciss_request(request_queue_t *q)
2077 {
2078         ctlr_info_t *h= q->queuedata; 
2079         CommandList_struct *c;
2080         int start_blk, seg;
2081         struct request *creq;
2082         u64bit temp64;
2083         struct scatterlist tmp_sg[MAXSGENTRIES];
2084         drive_info_struct *drv;
2085         int i, dir;
2086
2087         /* We call start_io here in case there is a command waiting on the
2088          * queue that has not been sent.
2089         */
2090         if (blk_queue_plugged(q))
2091                 goto startio;
2092
2093 queue:
2094         creq = elv_next_request(q);
2095         if (!creq)
2096                 goto startio;
2097
2098         if (creq->nr_phys_segments > MAXSGENTRIES)
2099                 BUG();
2100
2101         if (( c = cmd_alloc(h, 1)) == NULL)
2102                 goto full;
2103
2104         blkdev_dequeue_request(creq);
2105
2106         spin_unlock_irq(q->queue_lock);
2107
2108         c->cmd_type = CMD_RWREQ;
2109         c->rq = creq;
2110         
2111         /* fill in the request */ 
2112         drv = creq->rq_disk->private_data;
2113         c->Header.ReplyQueue = 0;  // unused in simple mode
2114         c->Header.Tag.lower = c->busaddr;  // use the physical address the cmd block for tag
2115         c->Header.LUN.LogDev.VolId= drv->LunID;
2116         c->Header.LUN.LogDev.Mode = 1;
2117         c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2118         c->Request.Type.Type =  TYPE_CMD; // It is a command. 
2119         c->Request.Type.Attribute = ATTR_SIMPLE; 
2120         c->Request.Type.Direction = 
2121                 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE; 
2122         c->Request.Timeout = 0; // Don't time out       
2123         c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2124         start_blk = creq->sector;
2125 #ifdef CCISS_DEBUG
2126         printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2127                 (int) creq->nr_sectors);        
2128 #endif /* CCISS_DEBUG */
2129
2130         seg = blk_rq_map_sg(q, creq, tmp_sg);
2131
2132         /* get the DMA records for the setup */ 
2133         if (c->Request.Type.Direction == XFER_READ)
2134                 dir = PCI_DMA_FROMDEVICE;
2135         else
2136                 dir = PCI_DMA_TODEVICE;
2137
2138         for (i=0; i<seg; i++)
2139         {
2140                 c->SG[i].Len = tmp_sg[i].length;
2141                 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2142                                           tmp_sg[i].offset, tmp_sg[i].length,
2143                                           dir);
2144                 c->SG[i].Addr.lower = temp64.val32.lower;
2145                 c->SG[i].Addr.upper = temp64.val32.upper;
2146                 c->SG[i].Ext = 0;  // we are not chaining
2147         }
2148         /* track how many SG entries we are using */ 
2149         if( seg > h->maxSG)
2150                 h->maxSG = seg; 
2151
2152 #ifdef CCISS_DEBUG
2153         printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2154 #endif /* CCISS_DEBUG */
2155
2156         c->Header.SGList = c->Header.SGTotal = seg;
2157         c->Request.CDB[1]= 0;
2158         c->Request.CDB[2]= (start_blk >> 24) & 0xff;    //MSB
2159         c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2160         c->Request.CDB[4]= (start_blk >>  8) & 0xff;
2161         c->Request.CDB[5]= start_blk & 0xff;
2162         c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2163         c->Request.CDB[7]= (creq->nr_sectors >>  8) & 0xff; 
2164         c->Request.CDB[8]= creq->nr_sectors & 0xff; 
2165         c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2166
2167         spin_lock_irq(q->queue_lock);
2168
2169         addQ(&(h->reqQ),c);
2170         h->Qdepth++;
2171         if(h->Qdepth > h->maxQsinceinit)
2172                 h->maxQsinceinit = h->Qdepth; 
2173
2174         goto queue;
2175 full:
2176         blk_stop_queue(q);
2177 startio:
2178         /* We will already have the driver lock here so not need
2179          * to lock it.
2180         */
2181         start_io(h);
2182 }
2183
2184 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2185 {
2186         ctlr_info_t *h = dev_id;
2187         CommandList_struct *c;
2188         unsigned long flags;
2189         __u32 a, a1;
2190         int j;
2191         int start_queue = h->next_to_run;
2192
2193         /* Is this interrupt for us? */
2194         if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2195                 return IRQ_NONE;
2196
2197         /*
2198          * If there are completed commands in the completion queue,
2199          * we had better do something about it.
2200          */
2201         spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2202         while( h->access.intr_pending(h))
2203         {
2204                 while((a = h->access.command_completed(h)) != FIFO_EMPTY) 
2205                 {
2206                         a1 = a;
2207                         a &= ~3;
2208                         if ((c = h->cmpQ) == NULL)
2209                         {  
2210                                 printk(KERN_WARNING "cciss: Completion of %08lx ignored\n", (unsigned long)a1);
2211                                 continue;       
2212                         } 
2213                         while(c->busaddr != a) {
2214                                 c = c->next;
2215                                 if (c == h->cmpQ) 
2216                                         break;
2217                         }
2218                         /*
2219                          * If we've found the command, take it off the
2220                          * completion Q and free it
2221                          */
2222                          if (c->busaddr == a) {
2223                                 removeQ(&h->cmpQ, c);
2224                                 if (c->cmd_type == CMD_RWREQ) {
2225                                         complete_command(h, c, 0);
2226                                 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2227                                         complete(c->waiting);
2228                                 }
2229 #                               ifdef CONFIG_CISS_SCSI_TAPE
2230                                 else if (c->cmd_type == CMD_SCSI)
2231                                         complete_scsi_command(c, 0, a1);
2232 #                               endif
2233                                 continue;
2234                         }
2235                 }
2236         }
2237
2238         /* check to see if we have maxed out the number of commands that can
2239          * be placed on the queue.  If so then exit.  We do this check here
2240          * in case the interrupt we serviced was from an ioctl and did not
2241          * free any new commands.
2242          */
2243         if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2244                 goto cleanup;
2245
2246         /* We have room on the queue for more commands.  Now we need to queue
2247          * them up.  We will also keep track of the next queue to run so
2248          * that every queue gets a chance to be started first.
2249         */
2250         for (j=0; j < h->highest_lun + 1; j++){
2251                 int curr_queue = (start_queue + j) % (h->highest_lun + 1);
2252                 /* make sure the disk has been added and the drive is real
2253                  * because this can be called from the middle of init_one.
2254                 */
2255                 if(!(h->drv[curr_queue].queue) ||
2256                                    !(h->drv[curr_queue].heads))
2257                         continue;
2258                 blk_start_queue(h->gendisk[curr_queue]->queue);
2259
2260                 /* check to see if we have maxed out the number of commands
2261                  * that can be placed on the queue.
2262                 */
2263                 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2264                 {
2265                         if (curr_queue == start_queue){
2266                                 h->next_to_run = (start_queue + 1) % (h->highest_lun + 1);
2267                                 goto cleanup;
2268                         } else {
2269                                 h->next_to_run = curr_queue;
2270                                 goto cleanup;
2271         }
2272                 } else {
2273                         curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
2274                 }
2275         }
2276
2277 cleanup:
2278         spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2279         return IRQ_HANDLED;
2280 }
2281 /* 
2282  *  We cannot read the structure directly, for portablity we must use 
2283  *   the io functions.
2284  *   This is for debug only. 
2285  */
2286 #ifdef CCISS_DEBUG
2287 static void print_cfg_table( CfgTable_struct *tb)
2288 {
2289         int i;
2290         char temp_name[17];
2291
2292         printk("Controller Configuration information\n");
2293         printk("------------------------------------\n");
2294         for(i=0;i<4;i++)
2295                 temp_name[i] = readb(&(tb->Signature[i]));
2296         temp_name[4]='\0';
2297         printk("   Signature = %s\n", temp_name); 
2298         printk("   Spec Number = %d\n", readl(&(tb->SpecValence)));
2299         printk("   Transport methods supported = 0x%x\n", 
2300                                 readl(&(tb-> TransportSupport)));
2301         printk("   Transport methods active = 0x%x\n", 
2302                                 readl(&(tb->TransportActive)));
2303         printk("   Requested transport Method = 0x%x\n", 
2304                         readl(&(tb->HostWrite.TransportRequest)));
2305         printk("   Coalese Interrupt Delay = 0x%x\n", 
2306                         readl(&(tb->HostWrite.CoalIntDelay)));
2307         printk("   Coalese Interrupt Count = 0x%x\n", 
2308                         readl(&(tb->HostWrite.CoalIntCount)));
2309         printk("   Max outstanding commands = 0x%d\n", 
2310                         readl(&(tb->CmdsOutMax)));
2311         printk("   Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2312         for(i=0;i<16;i++)
2313                 temp_name[i] = readb(&(tb->ServerName[i]));
2314         temp_name[16] = '\0';
2315         printk("   Server Name = %s\n", temp_name);
2316         printk("   Heartbeat Counter = 0x%x\n\n\n", 
2317                         readl(&(tb->HeartBeat)));
2318 }
2319 #endif /* CCISS_DEBUG */ 
2320
2321 static void release_io_mem(ctlr_info_t *c)
2322 {
2323         /* if IO mem was not protected do nothing */
2324         if( c->io_mem_addr == 0)
2325                 return;
2326         release_region(c->io_mem_addr, c->io_mem_length);
2327         c->io_mem_addr = 0;
2328         c->io_mem_length = 0;
2329 }
2330
2331 static int find_PCI_BAR_index(struct pci_dev *pdev,
2332                                 unsigned long pci_bar_addr)
2333 {
2334         int i, offset, mem_type, bar_type;
2335         if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2336                 return 0;
2337         offset = 0;
2338         for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2339                 bar_type = pci_resource_flags(pdev, i) &
2340                         PCI_BASE_ADDRESS_SPACE;
2341                 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2342                         offset += 4;
2343                 else {
2344                         mem_type = pci_resource_flags(pdev, i) &
2345                                 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2346                         switch (mem_type) {
2347                                 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2348                                 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2349                                         offset += 4; /* 32 bit */
2350                                         break;
2351                                 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2352                                         offset += 8;
2353                                         break;
2354                                 default: /* reserved in PCI 2.2 */
2355                                         printk(KERN_WARNING "Base address is invalid\n");
2356                                         return -1;
2357                                 break;
2358                         }
2359                 }
2360                 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2361                         return i+1;
2362         }
2363         return -1;
2364 }
2365
2366 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2367 {
2368         ushort subsystem_vendor_id, subsystem_device_id, command;
2369         __u32 board_id, scratchpad = 0;
2370         __u64 cfg_offset;
2371         __u32 cfg_base_addr;
2372         __u64 cfg_base_addr_index;
2373         int i;
2374
2375         /* check to see if controller has been disabled */
2376         /* BEFORE trying to enable it */
2377         (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2378         if(!(command & 0x02))
2379         {
2380                 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2381                 return(-1);
2382         }
2383
2384         if (pci_enable_device(pdev))
2385         {
2386                 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2387                 return( -1);
2388         }
2389
2390         subsystem_vendor_id = pdev->subsystem_vendor;
2391         subsystem_device_id = pdev->subsystem_device;
2392         board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2393                                         subsystem_vendor_id);
2394
2395         /* search for our IO range so we can protect it */
2396         for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2397         {
2398                 /* is this an IO range */ 
2399                 if( pci_resource_flags(pdev, i) & 0x01 ) {
2400                         c->io_mem_addr = pci_resource_start(pdev, i);
2401                         c->io_mem_length = pci_resource_end(pdev, i) -
2402                                 pci_resource_start(pdev, i) +1;
2403 #ifdef CCISS_DEBUG
2404                         printk("IO value found base_addr[%d] %lx %lx\n", i,
2405                                 c->io_mem_addr, c->io_mem_length);
2406 #endif /* CCISS_DEBUG */
2407                         /* register the IO range */ 
2408                         if(!request_region( c->io_mem_addr,
2409                                         c->io_mem_length, "cciss"))
2410                         {
2411                                 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2412                                 c->io_mem_addr, c->io_mem_length);
2413                                 c->io_mem_addr= 0;
2414                                 c->io_mem_length = 0;
2415                         } 
2416                         break;
2417                 }
2418         }
2419
2420 #ifdef CCISS_DEBUG
2421         printk("command = %x\n", command);
2422         printk("irq = %x\n", pdev->irq);
2423         printk("board_id = %x\n", board_id);
2424 #endif /* CCISS_DEBUG */ 
2425
2426         c->intr = pdev->irq;
2427
2428         /*
2429          * Memory base addr is first addr , the second points to the config
2430          *   table
2431          */
2432
2433         c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2434 #ifdef CCISS_DEBUG
2435         printk("address 0 = %x\n", c->paddr);
2436 #endif /* CCISS_DEBUG */ 
2437         c->vaddr = remap_pci_mem(c->paddr, 200);
2438
2439         /* Wait for the board to become ready.  (PCI hotplug needs this.)
2440          * We poll for up to 120 secs, once per 100ms. */
2441         for (i=0; i < 1200; i++) {
2442                 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2443                 if (scratchpad == CCISS_FIRMWARE_READY)
2444                         break;
2445                 set_current_state(TASK_INTERRUPTIBLE);
2446                 schedule_timeout(HZ / 10); /* wait 100ms */
2447         }
2448         if (scratchpad != CCISS_FIRMWARE_READY) {
2449                 printk(KERN_WARNING "cciss: Board not ready.  Timed out.\n");
2450                 return -1;
2451         }
2452
2453         /* get the address index number */
2454         cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2455         cfg_base_addr &= (__u32) 0x0000ffff;
2456 #ifdef CCISS_DEBUG
2457         printk("cfg base address = %x\n", cfg_base_addr);
2458 #endif /* CCISS_DEBUG */
2459         cfg_base_addr_index =
2460                 find_PCI_BAR_index(pdev, cfg_base_addr);
2461 #ifdef CCISS_DEBUG
2462         printk("cfg base address index = %x\n", cfg_base_addr_index);
2463 #endif /* CCISS_DEBUG */
2464         if (cfg_base_addr_index == -1) {
2465                 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2466                 release_io_mem(c);
2467                 return -1;
2468         }
2469
2470         cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2471 #ifdef CCISS_DEBUG
2472         printk("cfg offset = %x\n", cfg_offset);
2473 #endif /* CCISS_DEBUG */
2474         c->cfgtable =  remap_pci_mem(pci_resource_start(pdev,
2475                                 cfg_base_addr_index) + cfg_offset,
2476                                 sizeof(CfgTable_struct));
2477         c->board_id = board_id;
2478
2479 #ifdef CCISS_DEBUG
2480         print_cfg_table(c->cfgtable); 
2481 #endif /* CCISS_DEBUG */
2482
2483         for(i=0; i<NR_PRODUCTS; i++) {
2484                 if (board_id == products[i].board_id) {
2485                         c->product_name = products[i].product_name;
2486                         c->access = *(products[i].access);
2487                         break;
2488                 }
2489         }
2490         if (i == NR_PRODUCTS) {
2491                 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2492                         " to access the Smart Array controller %08lx\n", 
2493                                 (unsigned long)board_id);
2494                 return -1;
2495         }
2496         if (  (readb(&c->cfgtable->Signature[0]) != 'C') ||
2497               (readb(&c->cfgtable->Signature[1]) != 'I') ||
2498               (readb(&c->cfgtable->Signature[2]) != 'S') ||
2499               (readb(&c->cfgtable->Signature[3]) != 'S') )
2500         {
2501                 printk("Does not appear to be a valid CISS config table\n");
2502                 return -1;
2503         }
2504
2505 #ifdef CONFIG_X86
2506 {
2507         /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2508         __u32 prefetch;
2509         prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2510         prefetch |= 0x100;
2511         writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2512 }
2513 #endif
2514
2515 #ifdef CCISS_DEBUG
2516         printk("Trying to put board into Simple mode\n");
2517 #endif /* CCISS_DEBUG */ 
2518         c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2519         /* Update the field, and then ring the doorbell */ 
2520         writel( CFGTBL_Trans_Simple, 
2521                 &(c->cfgtable->HostWrite.TransportRequest));
2522         writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2523
2524         /* under certain very rare conditions, this can take awhile.
2525          * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2526          * as we enter this code.) */
2527         for(i=0;i<MAX_CONFIG_WAIT;i++) {
2528                 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2529                         break;
2530                 /* delay and try again */
2531                 set_current_state(TASK_INTERRUPTIBLE);
2532                 schedule_timeout(10);
2533         }       
2534
2535 #ifdef CCISS_DEBUG
2536         printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2537 #endif /* CCISS_DEBUG */
2538 #ifdef CCISS_DEBUG
2539         print_cfg_table(c->cfgtable);   
2540 #endif /* CCISS_DEBUG */ 
2541
2542         if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2543         {
2544                 printk(KERN_WARNING "cciss: unable to get board into"
2545                                         " simple mode\n");
2546                 return -1;
2547         }
2548         return 0;
2549
2550 }
2551
2552 /* 
2553  * Gets information about the local volumes attached to the controller. 
2554  */ 
2555 static void cciss_getgeometry(int cntl_num)
2556 {
2557         ReportLunData_struct *ld_buff;
2558         ReadCapdata_struct *size_buff;
2559         InquiryData_struct *inq_buff;
2560         int return_code;
2561         int i;
2562         int listlength = 0;
2563         __u32 lunid = 0;
2564         int block_size;
2565         int total_size; 
2566
2567         ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2568         if (ld_buff == NULL)
2569         {
2570                 printk(KERN_ERR "cciss: out of memory\n");
2571                 return;
2572         }
2573         memset(ld_buff, 0, sizeof(ReportLunData_struct));
2574         size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2575         if (size_buff == NULL)
2576         {
2577                 printk(KERN_ERR "cciss: out of memory\n");
2578                 kfree(ld_buff);
2579                 return;
2580         }
2581         inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2582         if (inq_buff == NULL)
2583         {
2584                 printk(KERN_ERR "cciss: out of memory\n");
2585                 kfree(ld_buff);
2586                 kfree(size_buff);
2587                 return;
2588         }
2589         /* Get the firmware version */ 
2590         return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, 
2591                 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2592         if (return_code == IO_OK)
2593         {
2594                 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2595                 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2596                 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2597                 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2598         } else /* send command failed */
2599         {
2600                 printk(KERN_WARNING "cciss: unable to determine firmware"
2601                         " version of controller\n");
2602         }
2603         /* Get the number of logical volumes */ 
2604         return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, 
2605                         sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2606
2607         if( return_code == IO_OK)
2608         {
2609 #ifdef CCISS_DEBUG
2610                 printk("LUN Data\n--------------------------\n");
2611 #endif /* CCISS_DEBUG */ 
2612
2613                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2614                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2615                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;  
2616                 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2617         } else /* reading number of logical volumes failed */
2618         {
2619                 printk(KERN_WARNING "cciss: report logical volume"
2620                         " command failed\n");
2621                 listlength = 0;
2622         }
2623         hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2624         if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2625         {
2626                 printk(KERN_ERR "ciss:  only %d number of logical volumes supported\n",
2627                         CISS_MAX_LUN);
2628                 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2629         }
2630 #ifdef CCISS_DEBUG
2631         printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2632                 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2633                 ld_buff->LUNListLength[3],  hba[cntl_num]->num_luns);
2634 #endif /* CCISS_DEBUG */
2635
2636         hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
2637         for(i=0; i<  hba[cntl_num]->num_luns; i++)
2638         {
2639
2640                 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
2641                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
2642                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
2643                 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2644                 
2645                 hba[cntl_num]->drv[i].LunID = lunid;
2646
2647
2648 #ifdef CCISS_DEBUG
2649                 printk(KERN_DEBUG "LUN[%d]:  %x %x %x %x = %x\n", i, 
2650                 ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2], 
2651                 ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID);
2652 #endif /* CCISS_DEBUG */
2653                 cciss_read_capacity(cntl_num, i, size_buff, 0,
2654                         &total_size, &block_size);
2655                 cciss_geometry_inquiry(cntl_num, i, 0, total_size, block_size,
2656                         inq_buff, &hba[cntl_num]->drv[i]);
2657         }
2658         kfree(ld_buff);
2659         kfree(size_buff);
2660         kfree(inq_buff);
2661 }       
2662
2663 /* Function to find the first free pointer into our hba[] array */
2664 /* Returns -1 if no free entries are left.  */
2665 static int alloc_cciss_hba(void)
2666 {
2667         struct gendisk *disk[NWD];
2668         int i, n;
2669         for (n = 0; n < NWD; n++) {
2670                 disk[n] = alloc_disk(1 << NWD_SHIFT);
2671                 if (!disk[n])
2672                         goto out;
2673         }
2674
2675         for(i=0; i< MAX_CTLR; i++) {
2676                 if (!hba[i]) {
2677                         ctlr_info_t *p;
2678                         p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
2679                         if (!p)
2680                                 goto Enomem;
2681                         memset(p, 0, sizeof(ctlr_info_t));
2682                         for (n = 0; n < NWD; n++)
2683                                 p->gendisk[n] = disk[n];
2684                         hba[i] = p;
2685                         return i;
2686                 }
2687         }
2688         printk(KERN_WARNING "cciss: This driver supports a maximum"
2689                 " of %d controllers.\n", MAX_CTLR);
2690         goto out;
2691 Enomem:
2692         printk(KERN_ERR "cciss: out of memory.\n");
2693 out:
2694         while (n--)
2695                 put_disk(disk[n]);
2696         return -1;
2697 }
2698
2699 static void free_hba(int i)
2700 {
2701         ctlr_info_t *p = hba[i];
2702         int n;
2703
2704         hba[i] = NULL;
2705         for (n = 0; n < NWD; n++)
2706                 put_disk(p->gendisk[n]);
2707         kfree(p);
2708 }
2709
2710 /*
2711  *  This is it.  Find all the controllers and register them.  I really hate
2712  *  stealing all these major device numbers.
2713  *  returns the number of block devices registered.
2714  */
2715 static int __devinit cciss_init_one(struct pci_dev *pdev,
2716         const struct pci_device_id *ent)
2717 {
2718         request_queue_t *q;
2719         int i;
2720         int j;
2721         int rc;
2722
2723         printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
2724                         " bus %d dev %d func %d\n",
2725                 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
2726                         PCI_FUNC(pdev->devfn));
2727         i = alloc_cciss_hba();
2728         if(i < 0)
2729                 return (-1);
2730         if (cciss_pci_init(hba[i], pdev) != 0)
2731                 goto clean1;
2732
2733         sprintf(hba[i]->devname, "cciss%d", i);
2734         hba[i]->ctlr = i;
2735         hba[i]->pdev = pdev;
2736
2737         /* configure PCI DMA stuff */
2738         if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
2739                 printk("cciss: using DAC cycles\n");
2740         else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2741                 printk("cciss: not using DAC cycles\n");
2742         else {
2743                 printk("cciss: no suitable DMA available\n");
2744                 goto clean1;
2745         }
2746
2747         /*
2748          * register with the major number, or get a dynamic major number
2749          * by passing 0 as argument.  This is done for greater than
2750          * 8 controller support.
2751          */
2752         if (i < MAX_CTLR_ORIG)
2753                 hba[i]->major = MAJOR_NR + i;
2754         rc = register_blkdev(hba[i]->major, hba[i]->devname);
2755         if(rc == -EBUSY || rc == -EINVAL) {
2756                 printk(KERN_ERR
2757                         "cciss:  Unable to get major number %d for %s "
2758                         "on hba %d\n", hba[i]->major, hba[i]->devname, i);
2759                 goto clean1;
2760         }
2761         else {
2762                 if (i >= MAX_CTLR_ORIG)
2763                         hba[i]->major = rc;
2764         }
2765
2766         /* make sure the board interrupts are off */
2767         hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
2768         if( request_irq(hba[i]->intr, do_cciss_intr, 
2769                 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM, 
2770                         hba[i]->devname, hba[i])) {
2771                 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
2772                         hba[i]->intr, hba[i]->devname);
2773                 goto clean2;
2774         }
2775         hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
2776         hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
2777                 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct), 
2778                 &(hba[i]->cmd_pool_dhandle));
2779         hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
2780                 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct), 
2781                 &(hba[i]->errinfo_pool_dhandle));
2782         if((hba[i]->cmd_pool_bits == NULL) 
2783                 || (hba[i]->cmd_pool == NULL)
2784                 || (hba[i]->errinfo_pool == NULL)) {
2785                 printk( KERN_ERR "cciss: out of memory");
2786                 goto clean4;
2787         }
2788
2789         spin_lock_init(&hba[i]->lock);
2790
2791         /* Initialize the pdev driver private data. 
2792                 have it point to hba[i].  */
2793         pci_set_drvdata(pdev, hba[i]);
2794         /* command and error info recs zeroed out before 
2795                         they are used */
2796         memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
2797
2798 #ifdef CCISS_DEBUG      
2799         printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
2800 #endif /* CCISS_DEBUG */
2801
2802         cciss_getgeometry(i);
2803
2804         cciss_scsi_setup(i);
2805
2806         /* Turn the interrupts on so we can service requests */
2807         hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
2808
2809         cciss_procinit(i);
2810
2811         for(j=0; j < NWD; j++) { /* mfm */
2812                 drive_info_struct *drv = &(hba[i]->drv[j]);
2813                 struct gendisk *disk = hba[i]->gendisk[j];
2814
2815                 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
2816                 if (!q) {
2817                         printk(KERN_ERR
2818                            "cciss:  unable to allocate queue for disk %d\n",
2819                            j);
2820                         break;
2821                 }
2822                 drv->queue = q;
2823
2824                 q->backing_dev_info.ra_pages = READ_AHEAD;
2825         blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
2826
2827         /* This is a hardware imposed limit. */
2828         blk_queue_max_hw_segments(q, MAXSGENTRIES);
2829
2830         /* This is a limit in the driver and could be eliminated. */
2831         blk_queue_max_phys_segments(q, MAXSGENTRIES);
2832
2833         blk_queue_max_sectors(q, 512);
2834
2835                 q->queuedata = hba[i];
2836                 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
2837                 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
2838                 disk->major = hba[i]->major;
2839                 disk->first_minor = j << NWD_SHIFT;
2840                 disk->fops = &cciss_fops;
2841                 disk->queue = q;
2842                 disk->private_data = drv;
2843                 /* we must register the controller even if no disks exist */
2844                 /* this is for the online array utilities */
2845                 if(!drv->heads && j)
2846                         continue;
2847                 blk_queue_hardsect_size(q, drv->block_size);
2848                 set_capacity(disk, drv->nr_blocks);
2849                 add_disk(disk);
2850         }
2851
2852         return(1);
2853
2854 clean4:
2855         if(hba[i]->cmd_pool_bits)
2856                 kfree(hba[i]->cmd_pool_bits);
2857         if(hba[i]->cmd_pool)
2858                 pci_free_consistent(hba[i]->pdev,
2859                         NR_CMDS * sizeof(CommandList_struct),
2860                         hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2861         if(hba[i]->errinfo_pool)
2862                 pci_free_consistent(hba[i]->pdev,
2863                         NR_CMDS * sizeof( ErrorInfo_struct),
2864                         hba[i]->errinfo_pool,
2865                         hba[i]->errinfo_pool_dhandle);
2866         free_irq(hba[i]->intr, hba[i]);
2867 clean2:
2868         unregister_blkdev(hba[i]->major, hba[i]->devname);
2869 clean1:
2870         release_io_mem(hba[i]);
2871         free_hba(i);
2872         return(-1);
2873 }
2874
2875 static void __devexit cciss_remove_one (struct pci_dev *pdev)
2876 {
2877         ctlr_info_t *tmp_ptr;
2878         int i, j;
2879         char flush_buf[4];
2880         int return_code; 
2881
2882         if (pci_get_drvdata(pdev) == NULL)
2883         {
2884                 printk( KERN_ERR "cciss: Unable to remove device \n");
2885                 return;
2886         }
2887         tmp_ptr = pci_get_drvdata(pdev);
2888         i = tmp_ptr->ctlr;
2889         if (hba[i] == NULL) 
2890         {
2891                 printk(KERN_ERR "cciss: device appears to "
2892                         "already be removed \n");
2893                 return;
2894         }
2895         /* Turn board interrupts off  and send the flush cache command */
2896         /* sendcmd will turn off interrupt, and send the flush...
2897         * To write all data in the battery backed cache to disks */
2898         memset(flush_buf, 0, 4);
2899         return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
2900                                 TYPE_CMD);
2901         if(return_code != IO_OK)
2902         {
2903                 printk(KERN_WARNING "Error Flushing cache on controller %d\n", 
2904                         i);
2905         }
2906         free_irq(hba[i]->intr, hba[i]);
2907         pci_set_drvdata(pdev, NULL);
2908         iounmap(hba[i]->vaddr);
2909         cciss_unregister_scsi(i);  /* unhook from SCSI subsystem */
2910         unregister_blkdev(hba[i]->major, hba[i]->devname);
2911         remove_proc_entry(hba[i]->devname, proc_cciss); 
2912         
2913         /* remove it from the disk list */
2914         for (j = 0; j < NWD; j++) {
2915                 struct gendisk *disk = hba[i]->gendisk[j];
2916                 if (disk->flags & GENHD_FL_UP)
2917                         blk_cleanup_queue(disk->queue);
2918                         del_gendisk(disk);
2919         }
2920
2921         pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2922                             hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2923         pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2924                 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
2925         kfree(hba[i]->cmd_pool_bits);
2926         release_io_mem(hba[i]);
2927         free_hba(i);
2928 }       
2929
2930 static struct pci_driver cciss_pci_driver = {
2931         .name =         "cciss",
2932         .probe =        cciss_init_one,
2933         .remove =       __devexit_p(cciss_remove_one),
2934         .id_table =     cciss_pci_device_id, /* id_table */
2935 };
2936
2937 /*
2938  *  This is it.  Register the PCI driver information for the cards we control
2939  *  the OS will call our registered routines when it finds one of our cards. 
2940  */
2941 static int __init cciss_init(void)
2942 {
2943         printk(KERN_INFO DRIVER_NAME "\n");
2944
2945         /* Register for our PCI devices */
2946         return pci_module_init(&cciss_pci_driver);
2947 }
2948
2949 static void __exit cciss_cleanup(void)
2950 {
2951         int i;
2952
2953         pci_unregister_driver(&cciss_pci_driver);
2954         /* double check that all controller entrys have been removed */
2955         for (i=0; i< MAX_CTLR; i++) 
2956         {
2957                 if (hba[i] != NULL)
2958                 {
2959                         printk(KERN_WARNING "cciss: had to remove"
2960                                         " controller %d\n", i);
2961                         cciss_remove_one(hba[i]->pdev);
2962                 }
2963         }
2964         remove_proc_entry("cciss", proc_root_driver);
2965 }
2966
2967 module_init(cciss_init);
2968 module_exit(cciss_cleanup);