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