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.bus = host->pdev->bus->number;
 642                 pciinfo.dev_fn = host->pdev->devfn;
 643                 pciinfo.board_id = host->board_id;
 644                 if (copy_to_user(argp, &pciinfo,  sizeof( cciss_pci_info_struct )))
 645                         return  -EFAULT;
 646                 return(0);
 647         }
 648         case CCISS_GETINTINFO:
 649         {
 650                 cciss_coalint_struct intinfo;
 651                 if (!arg) return -EINVAL;
 652                 intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
 653                 intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
 654                 if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
 655                         return -EFAULT;
 656                 return(0);
 657         }
 658         case CCISS_SETINTINFO:
 659         {
 660                 cciss_coalint_struct intinfo;
 661                 unsigned long flags;
 662                 int i;
 663
 664                 if (!arg) return -EINVAL;
 665                 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
 666                 if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
 667                         return -EFAULT;
 668                 if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
 669
 670                 {
 671 //                      printk("cciss_ioctl: delay and count cannot be 0\n");
 672                         return( -EINVAL);
 673                 }
 674                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
 675                 /* Update the field, and then ring the doorbell */
 676                 writel( intinfo.delay,
 677                         &(host->cfgtable->HostWrite.CoalIntDelay));
 678                 writel( intinfo.count,
 679                         &(host->cfgtable->HostWrite.CoalIntCount));
 680                 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
 681
 682                 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
 683                         if (!(readl(host->vaddr + SA5_DOORBELL)
 684                                         & CFGTBL_ChangeReq))
 685                                 break;
 686                         /* delay and try again */
 687                         udelay(1000);
 688                 }
 689                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
 690                 if (i >= MAX_IOCTL_CONFIG_WAIT)
 691                         return -EAGAIN;
 692                 return(0);
 693         }
 694         case CCISS_GETNODENAME:
 695         {
 696                 NodeName_type NodeName;
 697                 int i;
 698
 699                 if (!arg) return -EINVAL;
 700                 for(i=0;i<16;i++)
 701                         NodeName[i] = readb(&host->cfgtable->ServerName[i]);
 702                 if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
 703                         return  -EFAULT;
 704                 return(0);
 705         }
 706         case CCISS_SETNODENAME:
 707         {
 708                 NodeName_type NodeName;
 709                 unsigned long flags;
 710                 int i;
 711
 712                 if (!arg) return -EINVAL;
 713                 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
 714
 715                 if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
 716                         return -EFAULT;
 717
 718                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
 719
 720                         /* Update the field, and then ring the doorbell */
 721                 for(i=0;i<16;i++)
 722                         writeb( NodeName[i], &host->cfgtable->ServerName[i]);
 723
 724                 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
 725
 726                 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
 727                         if (!(readl(host->vaddr + SA5_DOORBELL)
 728                                         & CFGTBL_ChangeReq))
 729                                 break;
 730                         /* delay and try again */
 731                         udelay(1000);
 732                 }
 733                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
 734                 if (i >= MAX_IOCTL_CONFIG_WAIT)
 735                         return -EAGAIN;
 736                 return(0);
 737         }
 738
 739         case CCISS_GETHEARTBEAT:
 740         {
 741                 Heartbeat_type heartbeat;
 742
 743                 if (!arg) return -EINVAL;
 744                 heartbeat = readl(&host->cfgtable->HeartBeat);
 745                 if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
 746                         return -EFAULT;
 747                 return(0);
 748         }
 749         case CCISS_GETBUSTYPES:
 750         {
 751                 BusTypes_type BusTypes;
 752
 753                 if (!arg) return -EINVAL;
 754                 BusTypes = readl(&host->cfgtable->BusTypes);
 755                 if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
 756                         return  -EFAULT;
 757                 return(0);
 758         }
 759         case CCISS_GETFIRMVER:
 760         {
 761                 FirmwareVer_type firmware;
 762
 763                 if (!arg) return -EINVAL;
 764                 memcpy(firmware, host->firm_ver, 4);
 765
 766                 if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
 767                         return -EFAULT;
 768                 return(0);
 769         }
 770         case CCISS_GETDRIVVER:
 771         {
 772                 DriverVer_type DriverVer = DRIVER_VERSION;
 773
 774                 if (!arg) return -EINVAL;
 775
 776                 if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
 777                         return -EFAULT;
 778                 return(0);
 779         }
 780
 781         case CCISS_REVALIDVOLS:
 782                 if (bdev != bdev->bd_contains || drv != host->drv)
 783                         return -ENXIO;
 784                 return revalidate_allvol(host);
 785
 786         case CCISS_GETLUNINFO: {
 787                 LogvolInfo_struct luninfo;
 788                 int i;
 789
 790                 luninfo.LunID = drv->LunID;
 791                 luninfo.num_opens = drv->usage_count;
 792                 luninfo.num_parts = 0;
 793                 /* count partitions 1 to 15 with sizes > 0 */
 794                 for (i = 0; i < MAX_PART - 1; i++) {
 795                         if (!disk->part[i])
 796                                 continue;
 797                         if (disk->part[i]->nr_sects != 0)
 798                                 luninfo.num_parts++;
 799                 }
 800                 if (copy_to_user(argp, &luninfo,
 801                                 sizeof(LogvolInfo_struct)))
 802                         return -EFAULT;
 803                 return(0);
 804         }
 805         case CCISS_DEREGDISK:
 806                 return deregister_disk(disk);
 807
 808         case CCISS_REGNEWD:
 809                 return register_new_disk(host);
 810
 811         case CCISS_PASSTHRU:
 812         {
 813                 IOCTL_Command_struct iocommand;
 814                 CommandList_struct *c;
 815                 char    *buff = NULL;
 816                 u64bit  temp64;
 817                 unsigned long flags;
 818                 DECLARE_COMPLETION(wait);
 819
 820                 if (!arg) return -EINVAL;
 821
 822                 if (!capable(CAP_SYS_RAWIO)) return -EPERM;
 823
 824                 if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
 825                         return -EFAULT;
 826                 if((iocommand.buf_size < 1) &&
 827                                 (iocommand.Request.Type.Direction != XFER_NONE))
 828                 {
 829                         return -EINVAL;
 830                 }
 831 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
 832                 /* Check kmalloc limits */
 833                 if(iocommand.buf_size > 128000)
 834                         return -EINVAL;
 835 #endif
 836                 if(iocommand.buf_size > 0)
 837                 {
 838                         buff =  kmalloc(iocommand.buf_size, GFP_KERNEL);
 839                         if( buff == NULL)
 840                                 return -EFAULT;
 841                 }
 842                 if (iocommand.Request.Type.Direction == XFER_WRITE)
 843                 {
 844                         /* Copy the data into the buffer we created */
 845                         if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
 846                         {
 847                                 kfree(buff);
 848                                 return -EFAULT;
 849                         }
 850                 } else {
 851                         memset(buff, 0, iocommand.buf_size);
 852                 }
 853                 if ((c = cmd_alloc(host , 0)) == NULL)
 854                 {
 855                         kfree(buff);
 856                         return -ENOMEM;
 857                 }
 858                         // Fill in the command type
 859                 c->cmd_type = CMD_IOCTL_PEND;
 860                         // Fill in Command Header
 861                 c->Header.ReplyQueue = 0;  // unused in simple mode
 862                 if( iocommand.buf_size > 0)     // buffer to fill
 863                 {
 864                         c->Header.SGList = 1;
 865                         c->Header.SGTotal= 1;
 866                 } else  // no buffers to fill
 867                 {
 868                         c->Header.SGList = 0;
 869                         c->Header.SGTotal= 0;
 870                 }
 871                 c->Header.LUN = iocommand.LUN_info;
 872                 c->Header.Tag.lower = c->busaddr;  // use the kernel address the cmd block for tag
 873
 874                 // Fill in Request block
 875                 c->Request = iocommand.Request;
 876
 877                 // Fill in the scatter gather information
 878                 if (iocommand.buf_size > 0 )
 879                 {
 880                         temp64.val = pci_map_single( host->pdev, buff,
 881                                         iocommand.buf_size,
 882                                 PCI_DMA_BIDIRECTIONAL);
 883                         c->SG[0].Addr.lower = temp64.val32.lower;
 884                         c->SG[0].Addr.upper = temp64.val32.upper;
 885                         c->SG[0].Len = iocommand.buf_size;
 886                         c->SG[0].Ext = 0;  // we are not chaining
 887                 }
 888                 c->waiting = &wait;
 889
 890                 /* Put the request on the tail of the request queue */
 891                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
 892                 addQ(&host->reqQ, c);
 893                 host->Qdepth++;
 894                 start_io(host);
 895                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
 896
 897                 wait_for_completion(&wait);
 898
 899                 /* unlock the buffers from DMA */
 900                 temp64.val32.lower = c->SG[0].Addr.lower;
 901                 temp64.val32.upper = c->SG[0].Addr.upper;
 902                 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
 903                         iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
 904
 905                 /* Copy the error information out */
 906                 iocommand.error_info = *(c->err_info);
 907                 if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
 908                 {
 909                         kfree(buff);
 910                         cmd_free(host, c, 0);
 911                         return( -EFAULT);
 912                 }
 913
 914                 if (iocommand.Request.Type.Direction == XFER_READ)
 915                 {
 916                         /* Copy the data out of the buffer we created */
 917                         if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
 918                         {
 919                                 kfree(buff);
 920                                 cmd_free(host, c, 0);
 921                                 return -EFAULT;
 922                         }
 923                 }
 924                 kfree(buff);
 925                 cmd_free(host, c, 0);
 926                 return(0);
 927         }
 928         case CCISS_BIG_PASSTHRU: {
 929                 BIG_IOCTL_Command_struct *ioc;
 930                 CommandList_struct *c;
 931                 unsigned char **buff = NULL;
 932                 int     *buff_size = NULL;
 933                 u64bit  temp64;
 934                 unsigned long flags;
 935                 BYTE sg_used = 0;
 936                 int status = 0;
 937                 int i;
 938                 DECLARE_COMPLETION(wait);
 939                 __u32   left;
 940                 __u32   sz;
 941                 BYTE    __user *data_ptr;
 942
 943                 if (!arg)
 944                         return -EINVAL;
 945                 if (!capable(CAP_SYS_RAWIO))
 946                         return -EPERM;
 947                 ioc = (BIG_IOCTL_Command_struct *)
 948                         kmalloc(sizeof(*ioc), GFP_KERNEL);
 949                 if (!ioc) {
 950                         status = -ENOMEM;
 951                         goto cleanup1;
 952                 }
 953                 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
 954                         status = -EFAULT;
 955                         goto cleanup1;
 956                 }
 957                 if ((ioc->buf_size < 1) &&
 958                         (ioc->Request.Type.Direction != XFER_NONE)) {
 959                                 status = -EINVAL;
 960                                 goto cleanup1;
 961                 }
 962                 /* Check kmalloc limits  using all SGs */
 963                 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
 964                         status = -EINVAL;
 965                         goto cleanup1;
 966                 }
 967                 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
 968                         status = -EINVAL;
 969                         goto cleanup1;
 970                 }
 971                 buff = (unsigned char **) kmalloc(MAXSGENTRIES *
 972                                 sizeof(char *), GFP_KERNEL);
 973                 if (!buff) {
 974                         status = -ENOMEM;
 975                         goto cleanup1;
 976                 }
 977                 memset(buff, 0, MAXSGENTRIES);
 978                 buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
 979                                         GFP_KERNEL);
 980                 if (!buff_size) {
 981                         status = -ENOMEM;
 982                         goto cleanup1;
 983                 }
 984                 left = ioc->buf_size;
 985                 data_ptr = ioc->buf;
 986                 while (left) {
 987                         sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
 988                         buff_size[sg_used] = sz;
 989                         buff[sg_used] = kmalloc(sz, GFP_KERNEL);
 990                         if (buff[sg_used] == NULL) {
 991                                 status = -ENOMEM;
 992                                 goto cleanup1;
 993                         }
 994                         if (ioc->Request.Type.Direction == XFER_WRITE &&
 995                                 copy_from_user(buff[sg_used], data_ptr, sz)) {
 996                                         status = -ENOMEM;
 997                                         goto cleanup1;
 998                         } else {
 999                                 memset(buff[sg_used], 0, sz);
1000                         }
1001                         left -= sz;
1002                         data_ptr += sz;
1003                         sg_used++;
1004                 }
1005                 if ((c = cmd_alloc(host , 0)) == NULL) {
1006                         status = -ENOMEM;
1007                         goto cleanup1;
1008                 }
1009                 c->cmd_type = CMD_IOCTL_PEND;
1010                 c->Header.ReplyQueue = 0;
1011
1012                 if( ioc->buf_size > 0) {
1013                         c->Header.SGList = sg_used;
1014                         c->Header.SGTotal= sg_used;
1015                 } else {
1016                         c->Header.SGList = 0;
1017                         c->Header.SGTotal= 0;
1018                 }
1019                 c->Header.LUN = ioc->LUN_info;
1020                 c->Header.Tag.lower = c->busaddr;
1021
1022                 c->Request = ioc->Request;
1023                 if (ioc->buf_size > 0 ) {
1024                         int i;
1025                         for(i=0; i<sg_used; i++) {
1026                                 temp64.val = pci_map_single( host->pdev, buff[i],
1027                                         buff_size[i],
1028                                         PCI_DMA_BIDIRECTIONAL);
1029                                 c->SG[i].Addr.lower = temp64.val32.lower;
1030                                 c->SG[i].Addr.upper = temp64.val32.upper;
1031                                 c->SG[i].Len = buff_size[i];
1032                                 c->SG[i].Ext = 0;  /* we are not chaining */
1033                         }
1034                 }
1035                 c->waiting = &wait;
1036                 /* Put the request on the tail of the request queue */
1037                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1038                 addQ(&host->reqQ, c);
1039                 host->Qdepth++;
1040                 start_io(host);
1041                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1042                 wait_for_completion(&wait);
1043                 /* unlock the buffers from DMA */
1044                 for(i=0; i<sg_used; i++) {
1045                         temp64.val32.lower = c->SG[i].Addr.lower;
1046                         temp64.val32.upper = c->SG[i].Addr.upper;
1047                         pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
1048                                 buff_size[i], PCI_DMA_BIDIRECTIONAL);
1049                 }
1050                 /* Copy the error information out */
1051                 ioc->error_info = *(c->err_info);
1052                 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1053                         cmd_free(host, c, 0);
1054                         status = -EFAULT;
1055                         goto cleanup1;
1056                 }
1057                 if (ioc->Request.Type.Direction == XFER_READ) {
1058                         /* Copy the data out of the buffer we created */
1059                         BYTE __user *ptr = ioc->buf;
1060                         for(i=0; i< sg_used; i++) {
1061                                 if (copy_to_user(ptr, buff[i], buff_size[i])) {
1062                                         cmd_free(host, c, 0);
1063                                         status = -EFAULT;
1064                                         goto cleanup1;
1065                                 }
1066                                 ptr += buff_size[i];
1067                         }
1068                 }
1069                 cmd_free(host, c, 0);
1070                 status = 0;
1071 cleanup1:
1072                 if (buff) {
1073                         for(i=0; i<sg_used; i++)
1074                                 if(buff[i] != NULL)
1075                                         kfree(buff[i]);
1076                         kfree(buff);
1077                 }
1078                 if (buff_size)
1079                         kfree(buff_size);
1080                 if (ioc)
1081                         kfree(ioc);
1082                 return(status);
1083         }
1084         default:
1085                 return -ENOTTY;
1086         }
1087
1088 }
1089
1090 /*
1091  * revalidate_allvol is for online array config utilities.  After a
1092  * utility reconfigures the drives in the array, it can use this function
1093  * (through an ioctl) to make the driver zap any previous disk structs for
1094  * that controller and get new ones.
1095  *
1096  * Right now I'm using the getgeometry() function to do this, but this
1097  * function should probably be finer grained and allow you to revalidate one
1098  * particualar logical volume (instead of all of them on a particular
1099  * controller).
1100  */
1101 static int revalidate_allvol(ctlr_info_t *host)
1102 {
1103         int ctlr = host->ctlr, i;
1104         unsigned long flags;
1105
1106         spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1107         if (host->usage_count > 1) {
1108                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1109                 printk(KERN_WARNING "cciss: Device busy for volume"
1110                         " revalidation (usage=%d)\n", host->usage_count);
1111                 return -EBUSY;
1112         }
1113         host->usage_count++;
1114         spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1115
1116         for(i=0; i< NWD; i++) {
1117                 struct gendisk *disk = host->gendisk[i];
1118                 if (disk->flags & GENHD_FL_UP)
1119                         del_gendisk(disk);
1120         }
1121
1122         /*
1123          * Set the partition and block size structures for all volumes
1124          * on this controller to zero.  We will reread all of this data
1125          */
1126         memset(host->drv,        0, sizeof(drive_info_struct)
1127                                                 * CISS_MAX_LUN);
1128         /*
1129          * Tell the array controller not to give us any interrupts while
1130          * we check the new geometry.  Then turn interrupts back on when
1131          * we're done.
1132          */
1133         host->access.set_intr_mask(host, CCISS_INTR_OFF);
1134         cciss_getgeometry(ctlr);
1135         host->access.set_intr_mask(host, CCISS_INTR_ON);
1136
1137         /* Loop through each real device */
1138         for (i = 0; i < NWD; i++) {
1139                 struct gendisk *disk = host->gendisk[i];
1140                 drive_info_struct *drv = &(host->drv[i]);
1141                 /* we must register the controller even if no disks exist */
1142                 /* this is for the online array utilities */
1143                 if (!drv->heads && i)
1144                         continue;
1145                 blk_queue_hardsect_size(host->queue, drv->block_size);
1146                 set_capacity(disk, drv->nr_blocks);
1147                 add_disk(disk);
1148         }
1149         host->usage_count--;
1150         return 0;
1151 }
1152
1153 static int deregister_disk(struct gendisk *disk)
1154 {
1155         unsigned long flags;
1156         ctlr_info_t *h = get_host(disk);
1157         drive_info_struct *drv = get_drv(disk);
1158         int ctlr = h->ctlr;
1159
1160         if (!capable(CAP_SYS_RAWIO))
1161                 return -EPERM;
1162
1163         spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1164         /* make sure logical volume is NOT is use */
1165         if( drv->usage_count > 1) {
1166                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1167                 return -EBUSY;
1168         }
1169         drv->usage_count++;
1170         spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1171
1172         /* invalidate the devices and deregister the disk */
1173         if (disk->flags & GENHD_FL_UP)
1174                 del_gendisk(disk);
1175         /* check to see if it was the last disk */
1176         if (drv == h->drv + h->highest_lun) {
1177                 /* if so, find the new hightest lun */
1178                 int i, newhighest =-1;
1179                 for(i=0; i<h->highest_lun; i++) {
1180                         /* if the disk has size > 0, it is available */
1181                         if (h->drv[i].nr_blocks)
1182                                 newhighest = i;
1183                 }
1184                 h->highest_lun = newhighest;
1185
1186         }
1187         --h->num_luns;
1188         /* zero out the disk size info */
1189         drv->nr_blocks = 0;
1190         drv->block_size = 0;
1191         drv->cylinders = 0;
1192         drv->LunID = 0;
1193         return(0);
1194 }
1195 static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
1196         size_t size,
1197         unsigned int use_unit_num, /* 0: address the controller,
1198                                       1: address logical volume log_unit,
1199                                       2: periph device address is scsi3addr */
1200         unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
1201         int cmd_type)
1202 {
1203         ctlr_info_t *h= hba[ctlr];
1204         u64bit buff_dma_handle;
1205         int status = IO_OK;
1206
1207         c->cmd_type = CMD_IOCTL_PEND;
1208         c->Header.ReplyQueue = 0;
1209         if( buff != NULL) {
1210                 c->Header.SGList = 1;
1211                 c->Header.SGTotal= 1;
1212         } else {
1213                 c->Header.SGList = 0;
1214                 c->Header.SGTotal= 0;
1215         }
1216         c->Header.Tag.lower = c->busaddr;
1217
1218         c->Request.Type.Type = cmd_type;
1219         if (cmd_type == TYPE_CMD) {
1220                 switch(cmd) {
1221                 case  CISS_INQUIRY:
1222                         /* If the logical unit number is 0 then, this is going
1223                         to controller so It's a physical command
1224                         mode = 0 target = 0.  So we have nothing to write.
1225                         otherwise, if use_unit_num == 1,
1226                         mode = 1(volume set addressing) target = LUNID
1227                         otherwise, if use_unit_num == 2,
1228                         mode = 0(periph dev addr) target = scsi3addr */
1229                         if (use_unit_num == 1) {
1230                                 c->Header.LUN.LogDev.VolId=
1231                                         h->drv[log_unit].LunID;
1232                                 c->Header.LUN.LogDev.Mode = 1;
1233                         } else if (use_unit_num == 2) {
1234                                 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
1235                                 c->Header.LUN.LogDev.Mode = 0;
1236                         }
1237                         /* are we trying to read a vital product page */
1238                         if(page_code != 0) {
1239                                 c->Request.CDB[1] = 0x01;
1240                                 c->Request.CDB[2] = page_code;
1241                         }
1242                         c->Request.CDBLen = 6;
1243                         c->Request.Type.Attribute = ATTR_SIMPLE;
1244                         c->Request.Type.Direction = XFER_READ;
1245                         c->Request.Timeout = 0;
1246                         c->Request.CDB[0] =  CISS_INQUIRY;
1247                         c->Request.CDB[4] = size  & 0xFF;
1248                 break;
1249                 case CISS_REPORT_LOG:
1250                 case CISS_REPORT_PHYS:
1251                         /* Talking to controller so It's a physical command
1252                            mode = 00 target = 0.  Nothing to write.
1253                         */
1254                         c->Request.CDBLen = 12;
1255                         c->Request.Type.Attribute = ATTR_SIMPLE;
1256                         c->Request.Type.Direction = XFER_READ;
1257                         c->Request.Timeout = 0;
1258                         c->Request.CDB[0] = cmd;
1259                         c->Request.CDB[6] = (size >> 24) & 0xFF;  //MSB
1260                         c->Request.CDB[7] = (size >> 16) & 0xFF;
1261                         c->Request.CDB[8] = (size >> 8) & 0xFF;
1262                         c->Request.CDB[9] = size & 0xFF;
1263                         break;
1264
1265                 case CCISS_READ_CAPACITY:
1266                         c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1267                         c->Header.LUN.LogDev.Mode = 1;
1268                         c->Request.CDBLen = 10;
1269                         c->Request.Type.Attribute = ATTR_SIMPLE;
1270                         c->Request.Type.Direction = XFER_READ;
1271                         c->Request.Timeout = 0;
1272                         c->Request.CDB[0] = cmd;
1273                 break;
1274                 case CCISS_CACHE_FLUSH:
1275                         c->Request.CDBLen = 12;
1276                         c->Request.Type.Attribute = ATTR_SIMPLE;
1277                         c->Request.Type.Direction = XFER_WRITE;
1278                         c->Request.Timeout = 0;
1279                         c->Request.CDB[0] = BMIC_WRITE;
1280                         c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1281                 break;
1282                 default:
1283                         printk(KERN_WARNING
1284                                 "cciss%d:  Unknown Command 0x%c\n", ctlr, cmd);
1285                         return(IO_ERROR);
1286                 }
1287         } else if (cmd_type == TYPE_MSG) {
1288                 switch (cmd) {
1289                 case 3: /* No-Op message */
1290                         c->Request.CDBLen = 1;
1291                         c->Request.Type.Attribute = ATTR_SIMPLE;
1292                         c->Request.Type.Direction = XFER_WRITE;
1293                         c->Request.Timeout = 0;
1294                         c->Request.CDB[0] = cmd;
1295                         break;
1296                 default:
1297                         printk(KERN_WARNING
1298                                 "cciss%d: unknown message type %d\n",
1299                                 ctlr, cmd);
1300                         return IO_ERROR;
1301                 }
1302         } else {
1303                 printk(KERN_WARNING
1304                         "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1305                 return IO_ERROR;
1306         }
1307         /* Fill in the scatter gather information */
1308         if (size > 0) {
1309                 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1310                         buff, size, PCI_DMA_BIDIRECTIONAL);
1311                 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1312                 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1313                 c->SG[0].Len = size;
1314                 c->SG[0].Ext = 0;  /* we are not chaining */
1315         }
1316         return status;
1317 }
1318 static int sendcmd_withirq(__u8 cmd,
1319         int     ctlr,
1320         void    *buff,
1321         size_t  size,
1322         unsigned int use_unit_num,
1323         unsigned int log_unit,
1324         __u8    page_code,
1325         int cmd_type)
1326 {
1327         ctlr_info_t *h = hba[ctlr];
1328         CommandList_struct *c;
1329         u64bit  buff_dma_handle;
1330         unsigned long flags;
1331         int return_status;
1332         DECLARE_COMPLETION(wait);
1333
1334         if ((c = cmd_alloc(h , 0)) == NULL)
1335                 return -ENOMEM;
1336         return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1337                 log_unit, page_code, NULL, cmd_type);
1338         if (return_status != IO_OK) {
1339                 cmd_free(h, c, 0);
1340                 return return_status;
1341         }
1342 resend_cmd2:
1343         c->waiting = &wait;
1344
1345         /* Put the request on the tail of the queue and send it */
1346         spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1347         addQ(&h->reqQ, c);
1348         h->Qdepth++;
1349         start_io(h);
1350         spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1351
1352         wait_for_completion(&wait);
1353
1354         if(c->err_info->CommandStatus != 0)
1355         { /* an error has occurred */
1356                 switch(c->err_info->CommandStatus)
1357                 {
1358                         case CMD_TARGET_STATUS:
1359                                 printk(KERN_WARNING "cciss: cmd %p has "
1360                                         " completed with errors\n", c);
1361                                 if( c->err_info->ScsiStatus)
1362                                 {
1363                                         printk(KERN_WARNING "cciss: cmd %p "
1364                                         "has SCSI Status = %x\n",
1365                                                 c,
1366                                                 c->err_info->ScsiStatus);
1367                                 }
1368
1369                         break;
1370                         case CMD_DATA_UNDERRUN:
1371                         case CMD_DATA_OVERRUN:
1372                         /* expected for inquire and report lun commands */
1373                         break;
1374                         case CMD_INVALID:
1375                                 printk(KERN_WARNING "cciss: Cmd %p is "
1376                                         "reported invalid\n", c);
1377                                 return_status = IO_ERROR;
1378                         break;
1379                         case CMD_PROTOCOL_ERR:
1380                                 printk(KERN_WARNING "cciss: cmd %p has "
1381                                         "protocol error \n", c);
1382                                 return_status = IO_ERROR;
1383                         break;
1384 case CMD_HARDWARE_ERR:
1385                                 printk(KERN_WARNING "cciss: cmd %p had "
1386                                         " hardware error\n", c);
1387                                 return_status = IO_ERROR;
1388                         break;
1389                         case CMD_CONNECTION_LOST:
1390                                 printk(KERN_WARNING "cciss: cmd %p had "
1391                                         "connection lost\n", c);
1392                                 return_status = IO_ERROR;
1393                         break;
1394                         case CMD_ABORTED:
1395                                 printk(KERN_WARNING "cciss: cmd %p was "
1396                                         "aborted\n", c);
1397                                 return_status = IO_ERROR;
1398                         break;
1399                         case CMD_ABORT_FAILED:
1400                                 printk(KERN_WARNING "cciss: cmd %p reports "
1401                                         "abort failed\n", c);
1402                                 return_status = IO_ERROR;
1403                         break;
1404                         case CMD_UNSOLICITED_ABORT:
1405                                 printk(KERN_WARNING
1406                                         "cciss%d: unsolicited abort %p\n",
1407                                         ctlr, c);
1408                                 if (c->retry_count < MAX_CMD_RETRIES) {
1409                                         printk(KERN_WARNING
1410                                                 "cciss%d: retrying %p\n",
1411                                                 ctlr, c);
1412                                         c->retry_count++;
1413                                         /* erase the old error information */
1414                                         memset(c->err_info, 0,
1415                                                 sizeof(ErrorInfo_struct));
1416                                         return_status = IO_OK;
1417                                         INIT_COMPLETION(wait);
1418                                         goto resend_cmd2;
1419                                 }
1420                                 return_status = IO_ERROR;
1421                         break;
1422                         default:
1423                                 printk(KERN_WARNING "cciss: cmd %p returned "
1424                                         "unknown status %x\n", c,
1425                                                 c->err_info->CommandStatus);
1426                                 return_status = IO_ERROR;
1427                 }
1428         }
1429         /* unlock the buffers from DMA */
1430         pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1431                         size, PCI_DMA_BIDIRECTIONAL);
1432         cmd_free(h, c, 0);
1433         return(return_status);
1434
1435 }
1436 static void cciss_geometry_inquiry(int ctlr, int logvol,
1437                         int withirq, unsigned int total_size,
1438                         unsigned int block_size, InquiryData_struct *inq_buff,
1439                         drive_info_struct *drv)
1440 {
1441         int return_code;
1442         memset(inq_buff, 0, sizeof(InquiryData_struct));
1443         if (withirq)
1444                 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1445                         inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1446         else
1447                 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1448                         sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1449         if (return_code == IO_OK) {
1450                 if(inq_buff->data_byte[8] == 0xFF) {
1451                         printk(KERN_WARNING
1452                                 "cciss: reading geometry failed, volume "
1453                                 "does not support reading geometry\n");
1454                         drv->block_size = block_size;
1455                         drv->nr_blocks = total_size;
1456                         drv->heads = 255;
1457                         drv->sectors = 32; // Sectors per track
1458                         drv->cylinders = total_size / 255 / 32;
1459                 } else {
1460                         unsigned int t;
1461
1462                         drv->block_size = block_size;
1463                         drv->nr_blocks = total_size;
1464                         drv->heads = inq_buff->data_byte[6];
1465                         drv->sectors = inq_buff->data_byte[7];
1466                         drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1467                         drv->cylinders += inq_buff->data_byte[5];
1468                         drv->raid_level = inq_buff->data_byte[8];
1469                         t = drv->heads * drv->sectors;
1470                         if (t > 1) {
1471                                 drv->cylinders = total_size/t;
1472                         }
1473                 }
1474         } else { /* Get geometry failed */
1475                 printk(KERN_WARNING "cciss: reading geometry failed\n");
1476         }
1477         printk(KERN_INFO "      heads= %d, sectors= %d, cylinders= %d\n\n",
1478                 drv->heads, drv->sectors, drv->cylinders);
1479 }
1480 static void
1481 cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1482                 int withirq, unsigned int *total_size, unsigned int *block_size)
1483 {
1484         int return_code;
1485         memset(buf, 0, sizeof(*buf));
1486         if (withirq)
1487                 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1488                         ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1489         else
1490                 return_code = sendcmd(CCISS_READ_CAPACITY,
1491                         ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1492         if (return_code == IO_OK) {
1493                 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1494                 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1495         } else { /* read capacity command failed */
1496                 printk(KERN_WARNING "cciss: read capacity failed\n");
1497                 *total_size = 0;
1498                 *block_size = BLOCK_SIZE;
1499         }
1500         printk(KERN_INFO "      blocks= %u block_size= %d\n",
1501                 *total_size, *block_size);
1502         return;
1503 }
1504
1505 static int register_new_disk(ctlr_info_t *h)
1506 {
1507         struct gendisk *disk;
1508         int ctlr = h->ctlr;
1509         int i;
1510         int num_luns;
1511         int logvol;
1512         int new_lun_found = 0;
1513         int new_lun_index = 0;
1514         int free_index_found = 0;
1515         int free_index = 0;
1516         ReportLunData_struct *ld_buff = NULL;
1517         ReadCapdata_struct *size_buff = NULL;
1518         InquiryData_struct *inq_buff = NULL;
1519         int return_code;
1520         int listlength = 0;
1521         __u32 lunid = 0;
1522         unsigned int block_size;
1523         unsigned int total_size;
1524
1525         if (!capable(CAP_SYS_RAWIO))
1526                 return -EPERM;
1527         /* if we have no space in our disk array left to add anything */
1528         if(  h->num_luns >= CISS_MAX_LUN)
1529                 return -EINVAL;
1530
1531         ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1532         if (ld_buff == NULL)
1533                 goto mem_msg;
1534         memset(ld_buff, 0, sizeof(ReportLunData_struct));
1535         size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1536         if (size_buff == NULL)
1537                 goto mem_msg;
1538         inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1539         if (inq_buff == NULL)
1540                 goto mem_msg;
1541
1542         return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1543                         sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);
1544
1545         if( return_code == IO_OK)
1546         {
1547
1548                 // printk("LUN Data\n--------------------------\n");
1549
1550                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
1551                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
1552                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
1553                 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1554         } else /* reading number of logical volumes failed */
1555         {
1556                 printk(KERN_WARNING "cciss: report logical volume"
1557                         " command failed\n");
1558                 listlength = 0;
1559                 goto free_err;
1560         }
1561         num_luns = listlength / 8; // 8 bytes pre entry
1562         if (num_luns > CISS_MAX_LUN)
1563         {
1564                 num_luns = CISS_MAX_LUN;
1565         }
1566 #ifdef CCISS_DEBUG
1567         printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
1568                 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
1569                 ld_buff->LUNListLength[3],  num_luns);
1570 #endif
1571         for(i=0; i<  num_luns; i++)
1572         {
1573                 int j;
1574                 int lunID_found = 0;
1575
1576                 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
1577                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
1578                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
1579                 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1580
1581                 /* check to see if this is a new lun */
1582                 for(j=0; j <= h->highest_lun; j++)
1583                 {
1584 #ifdef CCISS_DEBUG
1585                         printk("Checking %d %x against %x\n", j,h->drv[j].LunID,
1586                                                 lunid);
1587 #endif /* CCISS_DEBUG */
1588                         if (h->drv[j].LunID == lunid)
1589                         {
1590                                 lunID_found = 1;
1591                                 break;
1592                         }
1593
1594                 }
1595                 if( lunID_found == 1)
1596                         continue;
1597                 else
1598                 {       /* It is the new lun we have been looking for */
1599 #ifdef CCISS_DEBUG
1600                         printk("new lun found at %d\n", i);
1601 #endif /* CCISS_DEBUG */
1602                         new_lun_index = i;
1603                         new_lun_found = 1;
1604                         break;
1605                 }
1606          }
1607          if (!new_lun_found)
1608          {
1609                 printk(KERN_WARNING "cciss:  New Logical Volume not found\n");
1610                 goto free_err;
1611          }
1612          /* Now find the free index     */
1613         for(i=0; i <CISS_MAX_LUN; i++)
1614         {
1615 #ifdef CCISS_DEBUG
1616                 printk("Checking Index %d\n", i);
1617 #endif /* CCISS_DEBUG */
1618                 if(h->drv[i].LunID == 0)
1619                 {
1620 #ifdef CCISS_DEBUG
1621                         printk("free index found at %d\n", i);
1622 #endif /* CCISS_DEBUG */
1623                         free_index_found = 1;
1624                         free_index = i;
1625                         break;
1626                 }
1627         }
1628         if (!free_index_found)
1629         {
1630                 printk(KERN_WARNING "cciss: unable to find free slot for disk\n");
1631                 goto free_err;
1632          }
1633
1634         logvol = free_index;
1635         h->drv[logvol].LunID = lunid;
1636                 /* there could be gaps in lun numbers, track hightest */
1637         if(h->highest_lun < lunid)
1638                 h->highest_lun = logvol;
1639         cciss_read_capacity(ctlr, logvol, size_buff, 1,
1640                 &total_size, &block_size);
1641         cciss_geometry_inquiry(ctlr, logvol, 1, total_size, block_size,
1642                         inq_buff, &h->drv[logvol]);
1643         h->drv[logvol].usage_count = 0;
1644         ++h->num_luns;
1645         /* setup partitions per disk */
1646         disk = h->gendisk[logvol];
1647         set_capacity(disk, h->drv[logvol].nr_blocks);
1648         /* if it's the controller it's already added */
1649         if(logvol)
1650                 add_disk(disk);
1651 freeret:
1652         kfree(ld_buff);
1653         kfree(size_buff);
1654         kfree(inq_buff);
1655         return (logvol);
1656 mem_msg:
1657         printk(KERN_ERR "cciss: out of memory\n");
1658 free_err:
1659         logvol = -1;
1660         goto freeret;
1661 }
1662
1663 static int cciss_revalidate(struct gendisk *disk)
1664 {
1665         ctlr_info_t *h = get_host(disk);
1666         drive_info_struct *drv = get_drv(disk);
1667         int logvol;
1668         int FOUND=0;
1669         unsigned int block_size;
1670         unsigned int total_size;
1671         ReadCapdata_struct *size_buff = NULL;
1672         InquiryData_struct *inq_buff = NULL;
1673
1674         for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1675         {
1676                 if(h->drv[logvol].LunID == drv->LunID) {
1677                         FOUND=1;
1678                         break;
1679                 }
1680         }
1681
1682         if (!FOUND) return 1;
1683
1684         size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1685         if (size_buff == NULL)
1686         {
1687                 printk(KERN_WARNING "cciss: out of memory\n");
1688                 return 1;
1689         }
1690         inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1691         if (inq_buff == NULL)
1692         {
1693                 printk(KERN_WARNING "cciss: out of memory\n");
1694                 kfree(size_buff);
1695                 return 1;
1696         }
1697
1698         cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1699         cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1700
1701         blk_queue_hardsect_size(h->queue, drv->block_size);
1702         set_capacity(disk, drv->nr_blocks);
1703
1704         kfree(size_buff);
1705         kfree(inq_buff);
1706         return 0;
1707 }
1708
1709 /*
1710  *   Wait polling for a command to complete.
1711  *   The memory mapped FIFO is polled for the completion.
1712  *   Used only at init time, interrupts from the HBA are disabled.
1713  */
1714 static unsigned long pollcomplete(int ctlr)
1715 {
1716         unsigned long done;
1717         int i;
1718
1719         /* Wait (up to 20 seconds) for a command to complete */
1720
1721         for (i = 20 * HZ; i > 0; i--) {
1722                 done = hba[ctlr]->access.command_completed(hba[ctlr]);
1723                 if (done == FIFO_EMPTY) {
1724                         set_current_state(TASK_UNINTERRUPTIBLE);
1725                         schedule_timeout(1);
1726                 } else
1727                         return (done);
1728         }
1729         /* Invalid address to tell caller we ran out of time */
1730         return 1;
1731 }
1732 /*
1733  * Send a command to the controller, and wait for it to complete.
1734  * Only used at init time.
1735  */
1736 static int sendcmd(
1737         __u8    cmd,
1738         int     ctlr,
1739         void    *buff,
1740         size_t  size,
1741         unsigned int use_unit_num, /* 0: address the controller,
1742                                       1: address logical volume log_unit,
1743                                       2: periph device address is scsi3addr */
1744         unsigned int log_unit,
1745         __u8    page_code,
1746         unsigned char *scsi3addr,
1747         int cmd_type)
1748 {
1749         CommandList_struct *c;
1750         int i;
1751         unsigned long complete;
1752         ctlr_info_t *info_p= hba[ctlr];
1753         u64bit buff_dma_handle;
1754         int status;
1755
1756         if ((c = cmd_alloc(info_p, 1)) == NULL) {
1757                 printk(KERN_WARNING "cciss: unable to get memory");
1758                 return(IO_ERROR);
1759         }
1760         status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1761                 log_unit, page_code, scsi3addr, cmd_type);
1762         if (status != IO_OK) {
1763                 cmd_free(info_p, c, 1);
1764                 return status;
1765         }
1766 resend_cmd1:
1767         /*
1768          * Disable interrupt
1769          */
1770 #ifdef CCISS_DEBUG
1771         printk(KERN_DEBUG "cciss: turning intr off\n");
1772 #endif /* CCISS_DEBUG */
1773         info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1774
1775         /* Make sure there is room in the command FIFO */
1776         /* Actually it should be completely empty at this time. */
1777         for (i = 200000; i > 0; i--)
1778         {
1779                 /* if fifo isn't full go */
1780                 if (!(info_p->access.fifo_full(info_p)))
1781                 {
1782
1783                         break;
1784                 }
1785                 udelay(10);
1786                 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
1787                         " waiting!\n", ctlr);
1788         }
1789         /*
1790          * Send the cmd
1791          */
1792         info_p->access.submit_command(info_p, c);
1793         complete = pollcomplete(ctlr);
1794
1795 #ifdef CCISS_DEBUG
1796         printk(KERN_DEBUG "cciss: command completed\n");
1797 #endif /* CCISS_DEBUG */
1798
1799         if (complete != 1) {
1800                 if ( (complete & CISS_ERROR_BIT)
1801                      && (complete & ~CISS_ERROR_BIT) == c->busaddr)
1802                      {
1803                         /* if data overrun or underun on Report command
1804                                 ignore it
1805                         */
1806                         if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
1807                              (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
1808                              (c->Request.CDB[0] == CISS_INQUIRY)) &&
1809                                 ((c->err_info->CommandStatus ==
1810                                         CMD_DATA_OVERRUN) ||
1811                                  (c->err_info->CommandStatus ==
1812                                         CMD_DATA_UNDERRUN)
1813                                 ))
1814                         {
1815                                 complete = c->busaddr;
1816                         } else {
1817                                 if (c->err_info->CommandStatus ==
1818                                                 CMD_UNSOLICITED_ABORT) {
1819                                         printk(KERN_WARNING "cciss%d: "
1820                                                 "unsolicited abort %p\n",
1821                                                 ctlr, c);
1822                                         if (c->retry_count < MAX_CMD_RETRIES) {
1823                                                 printk(KERN_WARNING
1824                                                    "cciss%d: retrying %p\n",
1825                                                    ctlr, c);
1826                                                 c->retry_count++;
1827                                                 /* erase the old error */
1828                                                 /* information */
1829                                                 memset(c->err_info, 0,
1830                                                    sizeof(ErrorInfo_struct));
1831                                                 goto resend_cmd1;
1832                                         } else {
1833                                                 printk(KERN_WARNING
1834                                                    "cciss%d: retried %p too "
1835                                                    "many times\n", ctlr, c);
1836                                                 status = IO_ERROR;
1837                                                 goto cleanup1;
1838                                         }
1839                                 }
1840                                 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1841                                 " Error %x \n", ctlr,
1842                                         c->err_info->CommandStatus);
1843                                 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1844                                 " offensive info\n"
1845                                 "  size %x\n   num %x   value %x\n", ctlr,
1846                                   c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
1847                                   c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
1848                                   c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
1849                                 status = IO_ERROR;
1850                                 goto cleanup1;
1851                         }
1852                 }
1853                 if (complete != c->busaddr) {
1854                         printk( KERN_WARNING "cciss cciss%d: SendCmd "
1855                       "Invalid command list address returned! (%lx)\n",
1856                                 ctlr, complete);
1857                         status = IO_ERROR;
1858                         goto cleanup1;
1859                 }
1860         } else {
1861                 printk( KERN_WARNING
1862                         "cciss cciss%d: SendCmd Timeout out, "
1863                         "No command list address returned!\n",
1864                         ctlr);
1865                 status = IO_ERROR;
1866         }
1867
1868 cleanup1:
1869         /* unlock the data buffer from DMA */
1870         pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
1871                                 size, PCI_DMA_BIDIRECTIONAL);
1872         cmd_free(info_p, c, 1);
1873         return (status);
1874 }
1875 /*
1876  * Map (physical) PCI mem into (virtual) kernel space
1877  */
1878 static void __iomem *remap_pci_mem(ulong base, ulong size)
1879 {
1880         ulong page_base        = ((ulong) base) & PAGE_MASK;
1881         ulong page_offs        = ((ulong) base) - page_base;
1882         void __iomem *page_remapped = ioremap(page_base, page_offs+size);
1883
1884         return page_remapped ? (page_remapped + page_offs) : NULL;
1885 }
1886
1887 /*
1888  * Takes jobs of the Q and sends them to the hardware, then puts it on
1889  * the Q to wait for completion.
1890  */
1891 static void start_io( ctlr_info_t *h)
1892 {
1893         CommandList_struct *c;
1894
1895         while(( c = h->reqQ) != NULL )
1896         {
1897                 /* can't do anything if fifo is full */
1898                 if ((h->access.fifo_full(h))) {
1899                         printk(KERN_WARNING "cciss: fifo full\n");
1900                         break;
1901                 }
1902
1903                 /* Get the frist entry from the Request Q */
1904                 removeQ(&(h->reqQ), c);
1905                 h->Qdepth--;
1906
1907                 /* Tell the controller execute command */
1908                 h->access.submit_command(h, c);
1909
1910                 /* Put job onto the completed Q */
1911                 addQ (&(h->cmpQ), c);
1912         }
1913 }
1914
1915 static inline void complete_buffers(struct bio *bio, int status)
1916 {
1917         while (bio) {
1918                 struct bio *xbh = bio->bi_next;
1919                 int nr_sectors = bio_sectors(bio);
1920
1921                 bio->bi_next = NULL;
1922                 blk_finished_io(len);
1923                 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
1924                 bio = xbh;
1925         }
1926
1927 }
1928 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
1929 /* Zeros out the error record and then resends the command back */
1930 /* to the controller */
1931 static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
1932 {
1933         /* erase the old error information */
1934         memset(c->err_info, 0, sizeof(ErrorInfo_struct));
1935
1936         /* add it to software queue and then send it to the controller */
1937         addQ(&(h->reqQ),c);
1938         h->Qdepth++;
1939         if(h->Qdepth > h->maxQsinceinit)
1940                 h->maxQsinceinit = h->Qdepth;
1941
1942         start_io(h);
1943 }
1944 /* checks the status of the job and calls complete buffers to mark all
1945  * buffers for the completed job.
1946  */
1947 static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
1948                 int timeout)
1949 {
1950         int status = 1;
1951         int i;
1952         int retry_cmd = 0;
1953         u64bit temp64;
1954
1955         if (timeout)
1956                 status = 0;
1957
1958         if(cmd->err_info->CommandStatus != 0)
1959         { /* an error has occurred */
1960                 switch(cmd->err_info->CommandStatus)
1961                 {
1962                         unsigned char sense_key;
1963                         case CMD_TARGET_STATUS:
1964                                 status = 0;
1965
1966                                 if( cmd->err_info->ScsiStatus == 0x02)
1967                                 {
1968                                         printk(KERN_WARNING "cciss: cmd %p "
1969                                                 "has CHECK CONDITION "
1970                                                 " byte 2 = 0x%x\n", cmd,
1971                                                 cmd->err_info->SenseInfo[2]
1972                                         );
1973                                         /* check the sense key */
1974                                         sense_key = 0xf &
1975                                                 cmd->err_info->SenseInfo[2];
1976                                         /* no status or recovered error */
1977                                         if((sense_key == 0x0) ||
1978                                             (sense_key == 0x1))
1979                                         {
1980                                                         status = 1;
1981                                         }
1982                                 } else
1983                                 {
1984                                         printk(KERN_WARNING "cciss: cmd %p "
1985                                                 "has SCSI Status 0x%x\n",
1986                                                 cmd, cmd->err_info->ScsiStatus);
1987                                 }
1988                         break;
1989                         case CMD_DATA_UNDERRUN:
1990                                 printk(KERN_WARNING "cciss: cmd %p has"
1991                                         " completed with data underrun "
1992                                         "reported\n", cmd);
1993                         break;
1994                         case CMD_DATA_OVERRUN:
1995                                 printk(KERN_WARNING "cciss: cmd %p has"
1996                                         " completed with data overrun "
1997                                         "reported\n", cmd);
1998                         break;
1999                         case CMD_INVALID:
2000                                 printk(KERN_WARNING "cciss: cmd %p is "
2001                                         "reported invalid\n", cmd);
2002                                 status = 0;
2003                         break;
2004                         case CMD_PROTOCOL_ERR:
2005                                 printk(KERN_WARNING "cciss: cmd %p has "
2006                                         "protocol error \n", cmd);
2007                                 status = 0;
2008                         break;
2009                         case CMD_HARDWARE_ERR:
2010                                 printk(KERN_WARNING "cciss: cmd %p had "
2011                                         " hardware error\n", cmd);
2012                                 status = 0;
2013                         break;
2014                         case CMD_CONNECTION_LOST:
2015                                 printk(KERN_WARNING "cciss: cmd %p had "
2016                                         "connection lost\n", cmd);
2017                                 status=0;
2018                         break;
2019                         case CMD_ABORTED:
2020                                 printk(KERN_WARNING "cciss: cmd %p was "
2021                                         "aborted\n", cmd);
2022                                 status=0;
2023                         break;
2024                         case CMD_ABORT_FAILED:
2025                                 printk(KERN_WARNING "cciss: cmd %p reports "
2026                                         "abort failed\n", cmd);
2027                                 status=0;
2028                         break;
2029                         case CMD_UNSOLICITED_ABORT:
2030                                 printk(KERN_WARNING "cciss%d: unsolicited "
2031                                         "abort %p\n", h->ctlr, cmd);
2032                                 if (cmd->retry_count < MAX_CMD_RETRIES) {
2033                                         retry_cmd=1;
2034                                         printk(KERN_WARNING
2035                                                 "cciss%d: retrying %p\n",
2036                                                 h->ctlr, cmd);
2037                                         cmd->retry_count++;
2038                                 } else
2039                                         printk(KERN_WARNING
2040                                                 "cciss%d: %p retried too "
2041                                                 "many times\n", h->ctlr, cmd);
2042                                 status=0;
2043                         break;
2044                         case CMD_TIMEOUT:
2045                                 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2046                                         cmd);
2047                                 status=0;
2048                         break;
2049                         default:
2050                                 printk(KERN_WARNING "cciss: cmd %p returned "
2051                                         "unknown status %x\n", cmd,
2052                                                 cmd->err_info->CommandStatus);
2053                                 status=0;
2054                 }
2055         }
2056         /* We need to return this command */
2057         if(retry_cmd) {
2058                 resend_cciss_cmd(h,cmd);
2059                 return;
2060         }
2061         /* command did not need to be retried */
2062         /* unmap the DMA mapping for all the scatter gather elements */
2063         for(i=0; i<cmd->Header.SGList; i++) {
2064                 temp64.val32.lower = cmd->SG[i].Addr.lower;
2065                 temp64.val32.upper = cmd->SG[i].Addr.upper;
2066                 pci_unmap_page(hba[cmd->ctlr]->pdev,
2067                         temp64.val, cmd->SG[i].Len,
2068                         (cmd->Request.Type.Direction == XFER_READ) ?
2069                                 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2070         }
2071         complete_buffers(cmd->rq->bio, status);
2072
2073 #ifdef CCISS_DEBUG
2074         printk("Done with %p\n", cmd->rq);
2075 #endif /* CCISS_DEBUG */
2076
2077         end_that_request_last(cmd->rq);
2078         cmd_free(h,cmd,1);
2079 }
2080
2081 /*
2082  * Get a request and submit it to the controller.
2083  */
2084 static void do_cciss_request(request_queue_t *q)
2085 {
2086         ctlr_info_t *h= q->queuedata;
2087         CommandList_struct *c;
2088         int start_blk, seg;
2089         struct request *creq;
2090         u64bit temp64;
2091         struct scatterlist tmp_sg[MAXSGENTRIES];
2092         drive_info_struct *drv;
2093         int i, dir;
2094
2095         /* We call start_io here in case there is a command waiting on the
2096          * queue that has not been sent.
2097         */
2098         if (blk_queue_plugged(q))
2099                 goto startio;
2100
2101 queue:
2102         creq = elv_next_request(q);
2103         if (!creq)
2104                 goto startio;
2105
2106         if (creq->nr_phys_segments > MAXSGENTRIES)
2107                 BUG();
2108
2109         if (( c = cmd_alloc(h, 1)) == NULL)
2110                 goto full;
2111
2112         blkdev_dequeue_request(creq);
2113
2114         spin_unlock_irq(q->queue_lock);
2115
2116         c->cmd_type = CMD_RWREQ;
2117         c->rq = creq;
2118
2119         /* fill in the request */
2120         drv = creq->rq_disk->private_data;
2121         c->Header.ReplyQueue = 0;  // unused in simple mode
2122         c->Header.Tag.lower = c->busaddr;  // use the physical address the cmd block for tag
2123         c->Header.LUN.LogDev.VolId= drv->LunID;
2124         c->Header.LUN.LogDev.Mode = 1;
2125         c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2126         c->Request.Type.Type =  TYPE_CMD; // It is a command.
2127         c->Request.Type.Attribute = ATTR_SIMPLE;
2128         c->Request.Type.Direction =
2129                 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
2130         c->Request.Timeout = 0; // Don't time out
2131         c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2132         start_blk = creq->sector;
2133 #ifdef CCISS_DEBUG
2134         printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2135                 (int) creq->nr_sectors);
2136 #endif /* CCISS_DEBUG */
2137
2138         seg = blk_rq_map_sg(q, creq, tmp_sg);
2139
2140         /* get the DMA records for the setup */
2141         if (c->Request.Type.Direction == XFER_READ)
2142                 dir = PCI_DMA_FROMDEVICE;
2143         else
2144                 dir = PCI_DMA_TODEVICE;
2145
2146         for (i=0; i<seg; i++)
2147         {
2148                 c->SG[i].Len = tmp_sg[i].length;
2149                 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2150                                           tmp_sg[i].offset, tmp_sg[i].length,
2151                                           dir);
2152                 c->SG[i].Addr.lower = temp64.val32.lower;
2153                 c->SG[i].Addr.upper = temp64.val32.upper;
2154                 c->SG[i].Ext = 0;  // we are not chaining
2155         }
2156         /* track how many SG entries we are using */
2157         if( seg > h->maxSG)
2158                 h->maxSG = seg;
2159
2160 #ifdef CCISS_DEBUG
2161         printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2162 #endif /* CCISS_DEBUG */
2163
2164         c->Header.SGList = c->Header.SGTotal = seg;
2165         c->Request.CDB[1]= 0;
2166         c->Request.CDB[2]= (start_blk >> 24) & 0xff;    //MSB
2167         c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2168         c->Request.CDB[4]= (start_blk >>  8) & 0xff;
2169         c->Request.CDB[5]= start_blk & 0xff;
2170         c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2171         c->Request.CDB[7]= (creq->nr_sectors >>  8) & 0xff;
2172         c->Request.CDB[8]= creq->nr_sectors & 0xff;
2173         c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2174
2175         spin_lock_irq(q->queue_lock);
2176
2177         addQ(&(h->reqQ),c);
2178         h->Qdepth++;
2179         if(h->Qdepth > h->maxQsinceinit)
2180                 h->maxQsinceinit = h->Qdepth;
2181
2182         goto queue;
2183 full:
2184         blk_stop_queue(q);
2185 startio:
2186         /* We will already have the driver lock here so not need
2187          * to lock it.
2188         */
2189         start_io(h);
2190 }
2191
2192 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2193 {
2194         ctlr_info_t *h = dev_id;
2195         CommandList_struct *c;
2196         unsigned long flags;
2197         __u32 a, a1;
2198         int j;
2199         int start_queue = h->next_to_run;
2200
2201         /* Is this interrupt for us? */
2202         if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2203                 return IRQ_NONE;
2204
2205         /*
2206          * If there are completed commands in the completion queue,
2207          * we had better do something about it.
2208          */
2209         spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2210         while( h->access.intr_pending(h))
2211         {
2212                 while((a = h->access.command_completed(h)) != FIFO_EMPTY)
2213                 {
2214                         a1 = a;
2215                         a &= ~3;
2216                         if ((c = h->cmpQ) == NULL)
2217                         {
2218                                 printk(KERN_WARNING "cciss: Completion of %08lx ignored\n", (unsigned long)a1);
2219                                 continue;
2220                         }
2221                         while(c->busaddr != a) {
2222                                 c = c->next;
2223                                 if (c == h->cmpQ)
2224                                         break;
2225                         }
2226                         /*
2227                          * If we've found the command, take it off the
2228                          * completion Q and free it
2229                          */
2230                          if (c->busaddr == a) {
2231                                 removeQ(&h->cmpQ, c);
2232                                 if (c->cmd_type == CMD_RWREQ) {
2233                                         complete_command(h, c, 0);
2234                                 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2235                                         complete(c->waiting);
2236                                 }
2237 #                               ifdef CONFIG_CISS_SCSI_TAPE
2238                                 else if (c->cmd_type == CMD_SCSI)
2239                                         complete_scsi_command(c, 0, a1);
2240 #                               endif
2241                                 continue;
2242                         }
2243                 }
2244         }
2245
2246         /* check to see if we have maxed out the number of commands that can
2247          * be placed on the queue.  If so then exit.  We do this check here
2248          * in case the interrupt we serviced was from an ioctl and did not
2249          * free any new commands.
2250          */
2251         if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2252                 goto cleanup;
2253
2254         /* We have room on the queue for more commands.  Now we need to queue
2255          * them up.  We will also keep track of the next queue to run so
2256          * that every queue gets a chance to be started first.
2257         */
2258         for (j=0; j < NWD; j++){
2259                 int curr_queue = (start_queue + j) % NWD;
2260                 /* make sure the disk has been added and the drive is real
2261                  * because this can be called from the middle of init_one.
2262                 */
2263                 if(!(h->gendisk[curr_queue]->queue) ||
2264                                    !(h->drv[curr_queue].heads))
2265                         continue;
2266                 blk_start_queue(h->gendisk[curr_queue]->queue);
2267
2268                 /* check to see if we have maxed out the number of commands
2269                  * that can be placed on the queue.
2270                 */
2271                 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2272                 {
2273                         if (curr_queue == start_queue){
2274                                 h->next_to_run = (start_queue + 1) % NWD;
2275                                 goto cleanup;
2276                         } else {
2277                                 h->next_to_run = curr_queue;
2278                                 goto cleanup;
2279         }
2280                 } else {
2281                         curr_queue = (curr_queue + 1) % NWD;
2282                 }
2283         }
2284
2285 cleanup:
2286         spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2287         return IRQ_HANDLED;
2288 }
2289
2290 /*
2291  *  We cannot read the structure directly, for portablity we must use
2292  *   the io functions.
2293  *   This is for debug only.
2294  */
2295 #ifdef CCISS_DEBUG
2296 static void print_cfg_table( CfgTable_struct *tb)
2297 {
2298         int i;
2299         char temp_name[17];
2300
2301         printk("Controller Configuration information\n");
2302         printk("------------------------------------\n");
2303         for(i=0;i<4;i++)
2304                 temp_name[i] = readb(&(tb->Signature[i]));
2305         temp_name[4]='\0';
2306         printk("   Signature = %s\n", temp_name);
2307         printk("   Spec Number = %d\n", readl(&(tb->SpecValence)));
2308         printk("   Transport methods supported = 0x%x\n",
2309                                 readl(&(tb-> TransportSupport)));
2310         printk("   Transport methods active = 0x%x\n",
2311                                 readl(&(tb->TransportActive)));
2312         printk("   Requested transport Method = 0x%x\n",
2313                         readl(&(tb->HostWrite.TransportRequest)));
2314         printk("   Coalese Interrupt Delay = 0x%x\n",
2315                         readl(&(tb->HostWrite.CoalIntDelay)));
2316         printk("   Coalese Interrupt Count = 0x%x\n",
2317                         readl(&(tb->HostWrite.CoalIntCount)));
2318         printk("   Max outstanding commands = 0x%d\n",
2319                         readl(&(tb->CmdsOutMax)));
2320         printk("   Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2321         for(i=0;i<16;i++)
2322                 temp_name[i] = readb(&(tb->ServerName[i]));
2323         temp_name[16] = '\0';
2324         printk("   Server Name = %s\n", temp_name);
2325         printk("   Heartbeat Counter = 0x%x\n\n\n",
2326                         readl(&(tb->HeartBeat)));
2327 }
2328 #endif /* CCISS_DEBUG */
2329
2330 static void release_io_mem(ctlr_info_t *c)
2331 {
2332         /* if IO mem was not protected do nothing */
2333         if( c->io_mem_addr == 0)
2334                 return;
2335         release_region(c->io_mem_addr, c->io_mem_length);
2336         c->io_mem_addr = 0;
2337         c->io_mem_length = 0;
2338 }
2339
2340 static int find_PCI_BAR_index(struct pci_dev *pdev,
2341                                 unsigned long pci_bar_addr)
2342 {
2343         int i, offset, mem_type, bar_type;
2344         if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2345                 return 0;
2346         offset = 0;
2347         for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2348                 bar_type = pci_resource_flags(pdev, i) &
2349                         PCI_BASE_ADDRESS_SPACE;
2350                 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2351                         offset += 4;
2352                 else {
2353                         mem_type = pci_resource_flags(pdev, i) &
2354                                 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2355                         switch (mem_type) {
2356                                 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2357                                 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2358                                         offset += 4; /* 32 bit */
2359                                         break;
2360                                 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2361                                         offset += 8;
2362                                         break;
2363                                 default: /* reserved in PCI 2.2 */
2364                                         printk(KERN_WARNING "Base address is invalid\n");
2365                                         return -1;
2366                                 break;
2367                         }
2368                 }
2369                 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2370                         return i+1;
2371         }
2372         return -1;
2373 }
2374
2375 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2376 {
2377         ushort subsystem_vendor_id, subsystem_device_id, command;
2378         __u32 board_id, scratchpad = 0;
2379         __u64 cfg_offset;
2380         __u32 cfg_base_addr;
2381         __u64 cfg_base_addr_index;
2382         int i;
2383
2384         /* check to see if controller has been disabled */
2385         /* BEFORE trying to enable it */
2386         (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2387         if(!(command & 0x02))
2388         {
2389                 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2390                 return(-1);
2391         }
2392
2393         if (pci_enable_device(pdev))
2394         {
2395                 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2396                 return( -1);
2397         }
2398
2399         subsystem_vendor_id = pdev->subsystem_vendor;
2400         subsystem_device_id = pdev->subsystem_device;
2401         board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2402                                         subsystem_vendor_id);
2403
2404         /* search for our IO range so we can protect it */
2405         for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2406         {
2407                 /* is this an IO range */
2408                 if( pci_resource_flags(pdev, i) & 0x01 ) {
2409                         c->io_mem_addr = pci_resource_start(pdev, i);
2410                         c->io_mem_length = pci_resource_end(pdev, i) -
2411                                 pci_resource_start(pdev, i) +1;
2412 #ifdef CCISS_DEBUG
2413                         printk("IO value found base_addr[%d] %lx %lx\n", i,
2414                                 c->io_mem_addr, c->io_mem_length);
2415 #endif /* CCISS_DEBUG */
2416                         /* register the IO range */
2417                         if(!request_region( c->io_mem_addr,
2418                                         c->io_mem_length, "cciss"))
2419                         {
2420                                 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2421                                 c->io_mem_addr, c->io_mem_length);
2422                                 c->io_mem_addr= 0;
2423                                 c->io_mem_length = 0;
2424                         }
2425                         break;
2426                 }
2427         }
2428
2429 #ifdef CCISS_DEBUG
2430         printk("command = %x\n", command);
2431         printk("irq = %x\n", pdev->irq);
2432         printk("board_id = %x\n", board_id);
2433 #endif /* CCISS_DEBUG */
2434
2435         c->intr = pdev->irq;
2436
2437         /*
2438          * Memory base addr is first addr , the second points to the config
2439          *   table
2440          */
2441
2442         c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2443 #ifdef CCISS_DEBUG
2444         printk("address 0 = %x\n", c->paddr);
2445 #endif /* CCISS_DEBUG */
2446         c->vaddr = remap_pci_mem(c->paddr, 200);
2447
2448         /* Wait for the board to become ready.  (PCI hotplug needs this.)
2449          * We poll for up to 120 secs, once per 100ms. */
2450         for (i=0; i < 1200; i++) {
2451                 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2452                 if (scratchpad == CCISS_FIRMWARE_READY)
2453                         break;
2454                 set_current_state(TASK_INTERRUPTIBLE);
2455                 schedule_timeout(HZ / 10); /* wait 100ms */
2456         }
2457         if (scratchpad != CCISS_FIRMWARE_READY) {
2458                 printk(KERN_WARNING "cciss: Board not ready.  Timed out.\n");
2459                 return -1;
2460         }
2461
2462         /* get the address index number */
2463         cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2464         cfg_base_addr &= (__u32) 0x0000ffff;
2465 #ifdef CCISS_DEBUG
2466         printk("cfg base address = %x\n", cfg_base_addr);
2467 #endif /* CCISS_DEBUG */
2468         cfg_base_addr_index =
2469                 find_PCI_BAR_index(pdev, cfg_base_addr);
2470 #ifdef CCISS_DEBUG
2471         printk("cfg base address index = %x\n", cfg_base_addr_index);
2472 #endif /* CCISS_DEBUG */
2473         if (cfg_base_addr_index == -1) {
2474                 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2475                 release_io_mem(c);
2476                 return -1;
2477         }
2478
2479         cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2480 #ifdef CCISS_DEBUG
2481         printk("cfg offset = %x\n", cfg_offset);
2482 #endif /* CCISS_DEBUG */
2483         c->cfgtable =  remap_pci_mem(pci_resource_start(pdev,
2484                                 cfg_base_addr_index) + cfg_offset,
2485                                 sizeof(CfgTable_struct));
2486         c->board_id = board_id;
2487
2488 #ifdef CCISS_DEBUG
2489         print_cfg_table(c->cfgtable);
2490 #endif /* CCISS_DEBUG */
2491
2492         for(i=0; i<NR_PRODUCTS; i++) {
2493                 if (board_id == products[i].board_id) {
2494                         c->product_name = products[i].product_name;
2495                         c->access = *(products[i].access);
2496                         break;
2497                 }
2498         }
2499         if (i == NR_PRODUCTS) {
2500                 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2501                         " to access the Smart Array controller %08lx\n",
2502                                 (unsigned long)board_id);
2503                 return -1;
2504         }
2505         if (  (readb(&c->cfgtable->Signature[0]) != 'C') ||
2506               (readb(&c->cfgtable->Signature[1]) != 'I') ||
2507               (readb(&c->cfgtable->Signature[2]) != 'S') ||
2508               (readb(&c->cfgtable->Signature[3]) != 'S') )
2509         {
2510                 printk("Does not appear to be a valid CISS config table\n");
2511                 return -1;
2512         }
2513
2514 #ifdef CONFIG_X86
2515 {
2516         /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2517         __u32 prefetch;
2518         prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2519         prefetch |= 0x100;
2520         writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2521 }
2522 #endif
2523
2524 #ifdef CCISS_DEBUG
2525         printk("Trying to put board into Simple mode\n");
2526 #endif /* CCISS_DEBUG */
2527         c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2528         /* Update the field, and then ring the doorbell */
2529         writel( CFGTBL_Trans_Simple,
2530                 &(c->cfgtable->HostWrite.TransportRequest));
2531         writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2532
2533         /* under certain very rare conditions, this can take awhile.
2534          * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2535          * as we enter this code.) */
2536         for(i=0;i<MAX_CONFIG_WAIT;i++) {
2537                 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2538                         break;
2539                 /* delay and try again */
2540                 set_current_state(TASK_INTERRUPTIBLE);
2541                 schedule_timeout(10);
2542         }
2543
2544 #ifdef CCISS_DEBUG
2545         printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2546 #endif /* CCISS_DEBUG */
2547 #ifdef CCISS_DEBUG
2548         print_cfg_table(c->cfgtable);
2549 #endif /* CCISS_DEBUG */
2550
2551         if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2552         {
2553                 printk(KERN_WARNING "cciss: unable to get board into"
2554                                         " simple mode\n");
2555                 return -1;
2556         }
2557         return 0;
2558
2559 }
2560
2561 /*
2562  * Gets information about the local volumes attached to the controller.
2563  */
2564 static void cciss_getgeometry(int cntl_num)
2565 {
2566         ReportLunData_struct *ld_buff;
2567         ReadCapdata_struct *size_buff;
2568         InquiryData_struct *inq_buff;
2569         int return_code;
2570         int i;
2571         int listlength = 0;
2572         __u32 lunid = 0;
2573         int block_size;
2574         int total_size;
2575
2576         ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2577         if (ld_buff == NULL)
2578         {
2579                 printk(KERN_ERR "cciss: out of memory\n");
2580                 return;
2581         }
2582         memset(ld_buff, 0, sizeof(ReportLunData_struct));
2583         size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2584         if (size_buff == NULL)
2585         {
2586                 printk(KERN_ERR "cciss: out of memory\n");
2587                 kfree(ld_buff);
2588                 return;
2589         }
2590         inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2591         if (inq_buff == NULL)
2592         {
2593                 printk(KERN_ERR "cciss: out of memory\n");
2594                 kfree(ld_buff);
2595                 kfree(size_buff);
2596                 return;
2597         }
2598         /* Get the firmware version */
2599         return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2600                 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2601         if (return_code == IO_OK)
2602         {
2603                 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2604                 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2605                 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2606                 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2607         } else /* send command failed */
2608         {
2609                 printk(KERN_WARNING "cciss: unable to determine firmware"
2610                         " version of controller\n");
2611         }
2612         /* Get the number of logical volumes */
2613         return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2614                         sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2615
2616         if( return_code == IO_OK)
2617         {
2618 #ifdef CCISS_DEBUG
2619                 printk("LUN Data\n--------------------------\n");
2620 #endif /* CCISS_DEBUG */
2621
2622                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2623                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2624                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
2625                 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2626         } else /* reading number of logical volumes failed */
2627         {
2628                 printk(KERN_WARNING "cciss: report logical volume"
2629                         " command failed\n");
2630                 listlength = 0;
2631         }
2632         hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2633         if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2634         {
2635                 printk(KERN_ERR "ciss:  only %d number of logical volumes supported\n",
2636                         CISS_MAX_LUN);
2637                 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2638         }
2639 #ifdef CCISS_DEBUG
2640         printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2641                 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2642                 ld_buff->LUNListLength[3],  hba[cntl_num]->num_luns);
2643 #endif /* CCISS_DEBUG */
2644
2645         hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
2646         for(i=0; i<  hba[cntl_num]->num_luns; i++)
2647         {
2648
2649                 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
2650                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
2651                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
2652                 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2653
2654                 hba[cntl_num]->drv[i].LunID = lunid;
2655
2656
2657 #ifdef CCISS_DEBUG
2658                 printk(KERN_DEBUG "LUN[%d]:  %x %x %x %x = %x\n", i,
2659                 ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2],
2660                 ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID);
2661 #endif /* CCISS_DEBUG */
2662                 cciss_read_capacity(cntl_num, i, size_buff, 0,
2663                         &total_size, &block_size);
2664                 cciss_geometry_inquiry(cntl_num, i, 0, total_size, block_size,
2665                         inq_buff, &hba[cntl_num]->drv[i]);
2666         }
2667         kfree(ld_buff);
2668         kfree(size_buff);
2669         kfree(inq_buff);
2670 }
2671
2672 /* Function to find the first free pointer into our hba[] array */
2673 /* Returns -1 if no free entries are left.  */
2674 static int alloc_cciss_hba(void)
2675 {
2676         struct gendisk *disk[NWD];
2677         int i, n;
2678         for (n = 0; n < NWD; n++) {
2679                 disk[n] = alloc_disk(1 << NWD_SHIFT);
2680                 if (!disk[n])
2681                         goto out;
2682         }
2683
2684         for(i=0; i< MAX_CTLR; i++) {
2685                 if (!hba[i]) {
2686                         ctlr_info_t *p;
2687                         p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
2688                         if (!p)
2689                                 goto Enomem;
2690                         memset(p, 0, sizeof(ctlr_info_t));
2691                         for (n = 0; n < NWD; n++)
2692                                 p->gendisk[n] = disk[n];
2693                         hba[i] = p;
2694                         return i;
2695                 }
2696         }
2697         printk(KERN_WARNING "cciss: This driver supports a maximum"
2698                 " of %d controllers.\n", MAX_CTLR);
2699         goto out;
2700 Enomem:
2701         printk(KERN_ERR "cciss: out of memory.\n");
2702 out:
2703         while (n--)
2704                 put_disk(disk[n]);
2705         return -1;
2706 }
2707
2708 static void free_hba(int i)
2709 {
2710         ctlr_info_t *p = hba[i];
2711         int n;
2712
2713         hba[i] = NULL;
2714         for (n = 0; n < NWD; n++)
2715                 put_disk(p->gendisk[n]);
2716         kfree(p);
2717 }
2718
2719 /*
2720  *  This is it.  Find all the controllers and register them.  I really hate
2721  *  stealing all these major device numbers.
2722  *  returns the number of block devices registered.
2723  */
2724 static int __devinit cciss_init_one(struct pci_dev *pdev,
2725         const struct pci_device_id *ent)
2726 {
2727         request_queue_t *q;
2728         int i;
2729         int j;
2730         int rc;
2731
2732         printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
2733                         " bus %d dev %d func %d\n",
2734                 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
2735                         PCI_FUNC(pdev->devfn));
2736         i = alloc_cciss_hba();
2737         if(i < 0)
2738                 return (-1);
2739         if (cciss_pci_init(hba[i], pdev) != 0)
2740                 goto clean1;
2741
2742         sprintf(hba[i]->devname, "cciss%d", i);
2743         hba[i]->ctlr = i;
2744         hba[i]->pdev = pdev;
2745
2746         /* configure PCI DMA stuff */
2747         if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
2748                 printk("cciss: using DAC cycles\n");
2749         else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2750                 printk("cciss: not using DAC cycles\n");
2751         else {
2752                 printk("cciss: no suitable DMA available\n");
2753                 goto clean1;
2754         }
2755
2756         /*
2757          * register with the major number, or get a dynamic major number
2758          * by passing 0 as argument.  This is done for greater than
2759          * 8 controller support.
2760          */
2761         if (i < MAX_CTLR_ORIG)
2762                 hba[i]->major = MAJOR_NR + i;
2763         rc = register_blkdev(hba[i]->major, hba[i]->devname);
2764         if(rc == -EBUSY || rc == -EINVAL) {
2765                 printk(KERN_ERR
2766                         "cciss:  Unable to get major number %d for %s "
2767                         "on hba %d\n", hba[i]->major, hba[i]->devname, i);
2768                 goto clean1;
2769         }
2770         else {
2771                 if (i >= MAX_CTLR_ORIG)
2772                         hba[i]->major = rc;
2773         }
2774
2775         /* make sure the board interrupts are off */
2776         hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
2777         if( request_irq(hba[i]->intr, do_cciss_intr,
2778                 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
2779                         hba[i]->devname, hba[i])) {
2780                 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
2781                         hba[i]->intr, hba[i]->devname);
2782                 goto clean2;
2783         }
2784         hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
2785         hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
2786                 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2787                 &(hba[i]->cmd_pool_dhandle));
2788         hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
2789                 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2790                 &(hba[i]->errinfo_pool_dhandle));
2791         if((hba[i]->cmd_pool_bits == NULL)
2792                 || (hba[i]->cmd_pool == NULL)
2793                 || (hba[i]->errinfo_pool == NULL)) {
2794                 printk( KERN_ERR "cciss: out of memory");
2795                 goto clean4;
2796         }
2797
2798         spin_lock_init(&hba[i]->lock);
2799         q = blk_init_queue(do_cciss_request, &hba[i]->lock);
2800         if (!q)
2801                 goto clean4;
2802
2803         q->backing_dev_info.ra_pages = READ_AHEAD;
2804         hba[i]->queue = q;
2805         q->queuedata = hba[i];
2806
2807         /* Initialize the pdev driver private data.
2808                 have it point to hba[i].  */
2809         pci_set_drvdata(pdev, hba[i]);
2810         /* command and error info recs zeroed out before
2811                         they are used */
2812         memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
2813
2814 #ifdef CCISS_DEBUG
2815         printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
2816 #endif /* CCISS_DEBUG */
2817
2818         cciss_getgeometry(i);
2819
2820         cciss_scsi_setup(i);
2821
2822         /* Turn the interrupts on so we can service requests */
2823         hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
2824
2825         cciss_procinit(i);
2826
2827         blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
2828
2829         /* This is a hardware imposed limit. */
2830         blk_queue_max_hw_segments(q, MAXSGENTRIES);
2831
2832         /* This is a limit in the driver and could be eliminated. */
2833         blk_queue_max_phys_segments(q, MAXSGENTRIES);
2834
2835         blk_queue_max_sectors(q, 512);
2836
2837
2838         for(j=0; j<NWD; j++) {
2839                 drive_info_struct *drv = &(hba[i]->drv[j]);
2840                 struct gendisk *disk = hba[i]->gendisk[j];
2841
2842                 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
2843                 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
2844                 disk->major = hba[i]->major;
2845                 disk->first_minor = j << NWD_SHIFT;
2846                 disk->fops = &cciss_fops;
2847                 disk->queue = hba[i]->queue;
2848                 disk->private_data = drv;
2849                 /* we must register the controller even if no disks exist */
2850                 /* this is for the online array utilities */
2851                 if(!drv->heads && j)
2852                         continue;
2853                 blk_queue_hardsect_size(hba[i]->queue, drv->block_size);
2854                 set_capacity(disk, drv->nr_blocks);
2855                 add_disk(disk);
2856         }
2857         return(1);
2858
2859 clean4:
2860         if(hba[i]->cmd_pool_bits)
2861                 kfree(hba[i]->cmd_pool_bits);
2862         if(hba[i]->cmd_pool)
2863                 pci_free_consistent(hba[i]->pdev,
2864                         NR_CMDS * sizeof(CommandList_struct),
2865                         hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2866         if(hba[i]->errinfo_pool)
2867                 pci_free_consistent(hba[i]->pdev,
2868                         NR_CMDS * sizeof( ErrorInfo_struct),
2869                         hba[i]->errinfo_pool,
2870                         hba[i]->errinfo_pool_dhandle);
2871         free_irq(hba[i]->intr, hba[i]);
2872 clean2:
2873         unregister_blkdev(hba[i]->major, hba[i]->devname);
2874 clean1:
2875         release_io_mem(hba[i]);
2876         free_hba(i);
2877         return(-1);
2878 }
2879
2880 static void __devexit cciss_remove_one (struct pci_dev *pdev)
2881 {
2882         ctlr_info_t *tmp_ptr;
2883         int i, j;
2884         char flush_buf[4];
2885         int return_code;
2886
2887         if (pci_get_drvdata(pdev) == NULL)
2888         {
2889                 printk( KERN_ERR "cciss: Unable to remove device \n");
2890                 return;
2891         }
2892         tmp_ptr = pci_get_drvdata(pdev);
2893         i = tmp_ptr->ctlr;
2894         if (hba[i] == NULL)
2895         {
2896                 printk(KERN_ERR "cciss: device appears to "
2897                         "already be removed \n");
2898                 return;
2899         }
2900         /* Turn board interrupts off  and send the flush cache command */
2901         /* sendcmd will turn off interrupt, and send the flush...
2902         * To write all data in the battery backed cache to disks */
2903         memset(flush_buf, 0, 4);
2904         return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
2905                                 TYPE_CMD);
2906         if(return_code != IO_OK)
2907         {
2908                 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
2909                         i);
2910         }
2911         free_irq(hba[i]->intr, hba[i]);
2912         pci_set_drvdata(pdev, NULL);
2913         iounmap(hba[i]->vaddr);
2914         cciss_unregister_scsi(i);  /* unhook from SCSI subsystem */
2915         unregister_blkdev(hba[i]->major, hba[i]->devname);
2916         remove_proc_entry(hba[i]->devname, proc_cciss);
2917
2918         /* remove it from the disk list */
2919         for (j = 0; j < NWD; j++) {
2920                 struct gendisk *disk = hba[i]->gendisk[j];
2921                 if (disk->flags & GENHD_FL_UP)
2922                         del_gendisk(disk);
2923         }
2924
2925         blk_cleanup_queue(hba[i]->queue);
2926         pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2927                             hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2928         pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2929                 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
2930         kfree(hba[i]->cmd_pool_bits);
2931         release_io_mem(hba[i]);
2932         free_hba(i);
2933 }
2934
2935 static struct pci_driver cciss_pci_driver = {
2936         .name =         "cciss",
2937         .probe =        cciss_init_one,
2938         .remove =       __devexit_p(cciss_remove_one),
2939         .id_table =     cciss_pci_device_id, /* id_table */
2940 };
2941
2942 /*
2943  *  This is it.  Register the PCI driver information for the cards we control
2944  *  the OS will call our registered routines when it finds one of our cards.
2945  */
2946 static int __init cciss_init(void)
2947 {
2948         printk(KERN_INFO DRIVER_NAME "\n");
2949
2950         /* Register for our PCI devices */
2951         return pci_module_init(&cciss_pci_driver);
2952 }
2953
2954 static void __exit cciss_cleanup(void)
2955 {
2956         int i;
2957
2958         pci_unregister_driver(&cciss_pci_driver);
2959         /* double check that all controller entrys have been removed */
2960         for (i=0; i< MAX_CTLR; i++)
2961         {
2962                 if (hba[i] != NULL)
2963                 {
2964                         printk(KERN_WARNING "cciss: had to remove"
2965                                         " controller %d\n", i);
2966                         cciss_remove_one(hba[i]->pdev);
2967                 }
2968         }
2969         remove_proc_entry("cciss", proc_root_driver);
2970 }
2971
2972 module_init(cciss_init);
2973 module_exit(cciss_cleanup);