git.oblomov.eu Git - linux-2.6/blob - drivers/block/cciss.c

   1 /*
   2  *    Disk Array driver for HP SA 5xxx and 6xxx Controllers
   3  *    Copyright 2000, 2005 Hewlett-Packard Development Company, L.P.
   4  *
   5  *    This program is free software; you can redistribute it and/or modify
   6  *    it under the terms of the GNU General Public License as published by
   7  *    the Free Software Foundation; either version 2 of the License, or
   8  *    (at your option) any later version.
   9  *
  10  *    This program is distributed in the hope that it will be useful,
  11  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  13  *    NON INFRINGEMENT.  See the GNU General Public License for more details.
  14  *
  15  *    You should have received a copy of the GNU General Public License
  16  *    along with this program; if not, write to the Free Software
  17  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *
  19  *    Questions/Comments/Bugfixes to iss_storagedev@hp.com
  20  *
  21  */
  22
  23 #include <linux/config.h>       /* CONFIG_PROC_FS */
  24 #include <linux/module.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/types.h>
  27 #include <linux/pci.h>
  28 #include <linux/kernel.h>
  29 #include <linux/slab.h>
  30 #include <linux/delay.h>
  31 #include <linux/major.h>
  32 #include <linux/fs.h>
  33 #include <linux/bio.h>
  34 #include <linux/blkpg.h>
  35 #include <linux/timer.h>
  36 #include <linux/proc_fs.h>
  37 #include <linux/init.h>
  38 #include <linux/hdreg.h>
  39 #include <linux/spinlock.h>
  40 #include <linux/compat.h>
  41 #include <asm/uaccess.h>
  42 #include <asm/io.h>
  43
  44 #include <linux/dma-mapping.h>
  45 #include <linux/blkdev.h>
  46 #include <linux/genhd.h>
  47 #include <linux/completion.h>
  48
  49 #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
  50 #define DRIVER_NAME "HP CISS Driver (v 2.6.6)"
  51 #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,6)
  52
  53 /* Embedded module documentation macros - see modules.h */
  54 MODULE_AUTHOR("Hewlett-Packard Company");
  55 MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.6");
  56 MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
  57                         " SA6i P600 P800 E400 E300");
  58 MODULE_LICENSE("GPL");
  59
  60 #include "cciss_cmd.h"
  61 #include "cciss.h"
  62 #include <linux/cciss_ioctl.h>
  63
  64 /* define the PCI info for the cards we can control */
  65 static const struct pci_device_id cciss_pci_device_id[] = {
  66         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS,
  67                         0x0E11, 0x4070, 0, 0, 0},
  68         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
  69                         0x0E11, 0x4080, 0, 0, 0},
  70         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
  71                         0x0E11, 0x4082, 0, 0, 0},
  72         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
  73                         0x0E11, 0x4083, 0, 0, 0},
  74         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
  75                 0x0E11, 0x409A, 0, 0, 0},
  76         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
  77                 0x0E11, 0x409B, 0, 0, 0},
  78         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
  79                 0x0E11, 0x409C, 0, 0, 0},
  80         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
  81                 0x0E11, 0x409D, 0, 0, 0},
  82         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
  83                 0x0E11, 0x4091, 0, 0, 0},
  84         { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA,
  85                 0x103C, 0x3225, 0, 0, 0},
  86         { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSB,
  87                 0x103c, 0x3223, 0, 0, 0},
  88         { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
  89                 0x103c, 0x3231, 0, 0, 0},
  90         { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
  91                 0x103c, 0x3233, 0, 0, 0},
  92         {0,}
  93 };
  94 MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
  95
  96 #define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
  97
  98 /*  board_id = Subsystem Device ID & Vendor ID
  99  *  product = Marketing Name for the board
 100  *  access = Address of the struct of function pointers
 101  */
 102 static struct board_type products[] = {
 103         { 0x40700E11, "Smart Array 5300", &SA5_access },
 104         { 0x40800E11, "Smart Array 5i", &SA5B_access},
 105         { 0x40820E11, "Smart Array 532", &SA5B_access},
 106         { 0x40830E11, "Smart Array 5312", &SA5B_access},
 107         { 0x409A0E11, "Smart Array 641", &SA5_access},
 108         { 0x409B0E11, "Smart Array 642", &SA5_access},
 109         { 0x409C0E11, "Smart Array 6400", &SA5_access},
 110         { 0x409D0E11, "Smart Array 6400 EM", &SA5_access},
 111         { 0x40910E11, "Smart Array 6i", &SA5_access},
 112         { 0x3225103C, "Smart Array P600", &SA5_access},
 113         { 0x3223103C, "Smart Array P800", &SA5_access},
 114         { 0x3231103C, "Smart Array E400", &SA5_access},
 115         { 0x3233103C, "Smart Array E300", &SA5_access},
 116 };
 117
 118 /* How long to wait (in millesconds) for board to go into simple mode */
 119 #define MAX_CONFIG_WAIT 30000
 120 #define MAX_IOCTL_CONFIG_WAIT 1000
 121
 122 /*define how many times we will try a command because of bus resets */
 123 #define MAX_CMD_RETRIES 3
 124
 125 #define READ_AHEAD       1024
 126 #define NR_CMDS          384 /* #commands that can be outstanding */
 127 #define MAX_CTLR        32
 128
 129 /* Originally cciss driver only supports 8 major numbers */
 130 #define MAX_CTLR_ORIG   8
 131
 132
 133 static ctlr_info_t *hba[MAX_CTLR];
 134
 135 static void do_cciss_request(request_queue_t *q);
 136 static int cciss_open(struct inode *inode, struct file *filep);
 137 static int cciss_release(struct inode *inode, struct file *filep);
 138 static int cciss_ioctl(struct inode *inode, struct file *filep,
 139                 unsigned int cmd, unsigned long arg);
 140
 141 static int revalidate_allvol(ctlr_info_t *host);
 142 static int cciss_revalidate(struct gendisk *disk);
 143 static int deregister_disk(struct gendisk *disk);
 144 static int register_new_disk(ctlr_info_t *h);
 145
 146 static void cciss_getgeometry(int cntl_num);
 147
 148 static void start_io( ctlr_info_t *h);
 149 static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
 150         unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
 151         unsigned char *scsi3addr, int cmd_type);
 152
 153 #ifdef CONFIG_PROC_FS
 154 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
 155                 int length, int *eof, void *data);
 156 static void cciss_procinit(int i);
 157 #else
 158 static void cciss_procinit(int i) {}
 159 #endif /* CONFIG_PROC_FS */
 160
 161 #ifdef CONFIG_COMPAT
 162 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
 163 #endif
 164
 165 static struct block_device_operations cciss_fops  = {
 166         .owner          = THIS_MODULE,
 167         .open           = cciss_open,
 168         .release        = cciss_release,
 169         .ioctl          = cciss_ioctl,
 170 #ifdef CONFIG_COMPAT
 171         .compat_ioctl   = cciss_compat_ioctl,
 172 #endif
 173         .revalidate_disk= cciss_revalidate,
 174 };
 175
 176 /*
 177  * Enqueuing and dequeuing functions for cmdlists.
 178  */
 179 static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
 180 {
 181         if (*Qptr == NULL) {
 182                 *Qptr = c;
 183                 c->next = c->prev = c;
 184         } else {
 185                 c->prev = (*Qptr)->prev;
 186                 c->next = (*Qptr);
 187                 (*Qptr)->prev->next = c;
 188                 (*Qptr)->prev = c;
 189         }
 190 }
 191
 192 static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
 193                                                 CommandList_struct *c)
 194 {
 195         if (c && c->next != c) {
 196                 if (*Qptr == c) *Qptr = c->next;
 197                 c->prev->next = c->next;
 198                 c->next->prev = c->prev;
 199         } else {
 200                 *Qptr = NULL;
 201         }
 202         return c;
 203 }
 204
 205 #include "cciss_scsi.c"         /* For SCSI tape support */
 206
 207 #ifdef CONFIG_PROC_FS
 208
 209 /*
 210  * Report information about this controller.
 211  */
 212 #define ENG_GIG 1000000000
 213 #define ENG_GIG_FACTOR (ENG_GIG/512)
 214 #define RAID_UNKNOWN 6
 215 static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
 216                                            "UNKNOWN"};
 217
 218 static struct proc_dir_entry *proc_cciss;
 219
 220 static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
 221                 int length, int *eof, void *data)
 222 {
 223         off_t pos = 0;
 224         off_t len = 0;
 225         int size, i, ctlr;
 226         ctlr_info_t *h = (ctlr_info_t*)data;
 227         drive_info_struct *drv;
 228         unsigned long flags;
 229         sector_t vol_sz, vol_sz_frac;
 230
 231         ctlr = h->ctlr;
 232
 233         /* prevent displaying bogus info during configuration
 234          * or deconfiguration of a logical volume
 235          */
 236         spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
 237         if (h->busy_configuring) {
 238                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
 239         return -EBUSY;
 240         }
 241         h->busy_configuring = 1;
 242         spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
 243
 244         size = sprintf(buffer, "%s: HP %s Controller\n"
 245                 "Board ID: 0x%08lx\n"
 246                 "Firmware Version: %c%c%c%c\n"
 247                 "IRQ: %d\n"
 248                 "Logical drives: %d\n"
 249                 "Current Q depth: %d\n"
 250                 "Current # commands on controller: %d\n"
 251                 "Max Q depth since init: %d\n"
 252                 "Max # commands on controller since init: %d\n"
 253                 "Max SG entries since init: %d\n\n",
 254                 h->devname,
 255                 h->product_name,
 256                 (unsigned long)h->board_id,
 257                 h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
 258                 (unsigned int)h->intr,
 259                 h->num_luns,
 260                 h->Qdepth, h->commands_outstanding,
 261                 h->maxQsinceinit, h->max_outstanding, h->maxSG);
 262
 263         pos += size; len += size;
 264         cciss_proc_tape_report(ctlr, buffer, &pos, &len);
 265         for(i=0; i<=h->highest_lun; i++) {
 266
 267                 drv = &h->drv[i];
 268                 if (drv->block_size == 0)
 269                         continue;
 270
 271                 vol_sz = drv->nr_blocks;
 272                 vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
 273                 vol_sz_frac *= 100;
 274                 sector_div(vol_sz_frac, ENG_GIG_FACTOR);
 275
 276                 if (drv->raid_level > 5)
 277                         drv->raid_level = RAID_UNKNOWN;
 278                 size = sprintf(buffer+len, "cciss/c%dd%d:"
 279                                 "\t%4u.%02uGB\tRAID %s\n",
 280                                 ctlr, i, (int)vol_sz, (int)vol_sz_frac,
 281                                 raid_label[drv->raid_level]);
 282                 pos += size; len += size;
 283         }
 284
 285         *eof = 1;
 286         *start = buffer+offset;
 287         len -= offset;
 288         if (len>length)
 289                 len = length;
 290         h->busy_configuring = 0;
 291         return len;
 292 }
 293
 294 static int
 295 cciss_proc_write(struct file *file, const char __user *buffer,
 296                         unsigned long count, void *data)
 297 {
 298         unsigned char cmd[80];
 299         int len;
 300 #ifdef CONFIG_CISS_SCSI_TAPE
 301         ctlr_info_t *h = (ctlr_info_t *) data;
 302         int rc;
 303 #endif
 304
 305         if (count > sizeof(cmd)-1) return -EINVAL;
 306         if (copy_from_user(cmd, buffer, count)) return -EFAULT;
 307         cmd[count] = '\0';
 308         len = strlen(cmd);      // above 3 lines ensure safety
 309         if (len && cmd[len-1] == '\n')
 310                 cmd[--len] = '\0';
 311 #       ifdef CONFIG_CISS_SCSI_TAPE
 312                 if (strcmp("engage scsi", cmd)==0) {
 313                         rc = cciss_engage_scsi(h->ctlr);
 314                         if (rc != 0) return -rc;
 315                         return count;
 316                 }
 317                 /* might be nice to have "disengage" too, but it's not
 318                    safely possible. (only 1 module use count, lock issues.) */
 319 #       endif
 320         return -EINVAL;
 321 }
 322
 323 /*
 324  * Get us a file in /proc/cciss that says something about each controller.
 325  * Create /proc/cciss if it doesn't exist yet.
 326  */
 327 static void __devinit cciss_procinit(int i)
 328 {
 329         struct proc_dir_entry *pde;
 330
 331         if (proc_cciss == NULL) {
 332                 proc_cciss = proc_mkdir("cciss", proc_root_driver);
 333                 if (!proc_cciss)
 334                         return;
 335         }
 336
 337         pde = create_proc_read_entry(hba[i]->devname,
 338                 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
 339                 proc_cciss, cciss_proc_get_info, hba[i]);
 340         pde->write_proc = cciss_proc_write;
 341 }
 342 #endif /* CONFIG_PROC_FS */
 343
 344 /*
 345  * For operations that cannot sleep, a command block is allocated at init,
 346  * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
 347  * which ones are free or in use.  For operations that can wait for kmalloc
 348  * to possible sleep, this routine can be called with get_from_pool set to 0.
 349  * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
 350  */
 351 static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
 352 {
 353         CommandList_struct *c;
 354         int i;
 355         u64bit temp64;
 356         dma_addr_t cmd_dma_handle, err_dma_handle;
 357
 358         if (!get_from_pool)
 359         {
 360                 c = (CommandList_struct *) pci_alloc_consistent(
 361                         h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
 362                 if(c==NULL)
 363                         return NULL;
 364                 memset(c, 0, sizeof(CommandList_struct));
 365
 366                 c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
 367                                         h->pdev, sizeof(ErrorInfo_struct),
 368                                         &err_dma_handle);
 369
 370                 if (c->err_info == NULL)
 371                 {
 372                         pci_free_consistent(h->pdev,
 373                                 sizeof(CommandList_struct), c, cmd_dma_handle);
 374                         return NULL;
 375                 }
 376                 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
 377         } else /* get it out of the controllers pool */
 378         {
 379                 do {
 380                         i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
 381                         if (i == NR_CMDS)
 382                                 return NULL;
 383                 } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
 384 #ifdef CCISS_DEBUG
 385                 printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
 386 #endif
 387                 c = h->cmd_pool + i;
 388                 memset(c, 0, sizeof(CommandList_struct));
 389                 cmd_dma_handle = h->cmd_pool_dhandle
 390                                         + i*sizeof(CommandList_struct);
 391                 c->err_info = h->errinfo_pool + i;
 392                 memset(c->err_info, 0, sizeof(ErrorInfo_struct));
 393                 err_dma_handle = h->errinfo_pool_dhandle
 394                                         + i*sizeof(ErrorInfo_struct);
 395                 h->nr_allocs++;
 396         }
 397
 398         c->busaddr = (__u32) cmd_dma_handle;
 399         temp64.val = (__u64) err_dma_handle;
 400         c->ErrDesc.Addr.lower = temp64.val32.lower;
 401         c->ErrDesc.Addr.upper = temp64.val32.upper;
 402         c->ErrDesc.Len = sizeof(ErrorInfo_struct);
 403
 404         c->ctlr = h->ctlr;
 405         return c;
 406
 407
 408 }
 409
 410 /*
 411  * Frees a command block that was previously allocated with cmd_alloc().
 412  */
 413 static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
 414 {
 415         int i;
 416         u64bit temp64;
 417
 418         if( !got_from_pool)
 419         {
 420                 temp64.val32.lower = c->ErrDesc.Addr.lower;
 421                 temp64.val32.upper = c->ErrDesc.Addr.upper;
 422                 pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
 423                         c->err_info, (dma_addr_t) temp64.val);
 424                 pci_free_consistent(h->pdev, sizeof(CommandList_struct),
 425                         c, (dma_addr_t) c->busaddr);
 426         } else
 427         {
 428                 i = c - h->cmd_pool;
 429                 clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
 430                 h->nr_frees++;
 431         }
 432 }
 433
 434 static inline ctlr_info_t *get_host(struct gendisk *disk)
 435 {
 436         return disk->queue->queuedata;
 437 }
 438
 439 static inline drive_info_struct *get_drv(struct gendisk *disk)
 440 {
 441         return disk->private_data;
 442 }
 443
 444 /*
 445  * Open.  Make sure the device is really there.
 446  */
 447 static int cciss_open(struct inode *inode, struct file *filep)
 448 {
 449         ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
 450         drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
 451
 452 #ifdef CCISS_DEBUG
 453         printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
 454 #endif /* CCISS_DEBUG */
 455
 456         /*
 457          * Root is allowed to open raw volume zero even if it's not configured
 458          * so array config can still work. Root is also allowed to open any
 459          * volume that has a LUN ID, so it can issue IOCTL to reread the
 460          * disk information.  I don't think I really like this
 461          * but I'm already using way to many device nodes to claim another one
 462          * for "raw controller".
 463          */
 464         if (drv->nr_blocks == 0) {
 465                 if (iminor(inode) != 0) {       /* not node 0? */
 466                         /* if not node 0 make sure it is a partition = 0 */
 467                         if (iminor(inode) & 0x0f) {
 468                         return -ENXIO;
 469                                 /* if it is, make sure we have a LUN ID */
 470                         } else if (drv->LunID == 0) {
 471                                 return -ENXIO;
 472                         }
 473                 }
 474                 if (!capable(CAP_SYS_ADMIN))
 475                         return -EPERM;
 476         }
 477         drv->usage_count++;
 478         host->usage_count++;
 479         return 0;
 480 }
 481 /*
 482  * Close.  Sync first.
 483  */
 484 static int cciss_release(struct inode *inode, struct file *filep)
 485 {
 486         ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
 487         drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
 488
 489 #ifdef CCISS_DEBUG
 490         printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
 491 #endif /* CCISS_DEBUG */
 492
 493         drv->usage_count--;
 494         host->usage_count--;
 495         return 0;
 496 }
 497
 498 #ifdef CONFIG_COMPAT
 499
 500 static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
 501 {
 502         int ret;
 503         lock_kernel();
 504         ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
 505         unlock_kernel();
 506         return ret;
 507 }
 508
 509 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
 510 static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
 511
 512 static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
 513 {
 514         switch (cmd) {
 515         case CCISS_GETPCIINFO:
 516         case CCISS_GETINTINFO:
 517         case CCISS_SETINTINFO:
 518         case CCISS_GETNODENAME:
 519         case CCISS_SETNODENAME:
 520         case CCISS_GETHEARTBEAT:
 521         case CCISS_GETBUSTYPES:
 522         case CCISS_GETFIRMVER:
 523         case CCISS_GETDRIVVER:
 524         case CCISS_REVALIDVOLS:
 525         case CCISS_DEREGDISK:
 526         case CCISS_REGNEWDISK:
 527         case CCISS_REGNEWD:
 528         case CCISS_RESCANDISK:
 529         case CCISS_GETLUNINFO:
 530                 return do_ioctl(f, cmd, arg);
 531
 532         case CCISS_PASSTHRU32:
 533                 return cciss_ioctl32_passthru(f, cmd, arg);
 534         case CCISS_BIG_PASSTHRU32:
 535                 return cciss_ioctl32_big_passthru(f, cmd, arg);
 536
 537         default:
 538                 return -ENOIOCTLCMD;
 539         }
 540 }
 541
 542 static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
 543 {
 544         IOCTL32_Command_struct __user *arg32 =
 545                 (IOCTL32_Command_struct __user *) arg;
 546         IOCTL_Command_struct arg64;
 547         IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
 548         int err;
 549         u32 cp;
 550
 551         err = 0;
 552         err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
 553         err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
 554         err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
 555         err |= get_user(arg64.buf_size, &arg32->buf_size);
 556         err |= get_user(cp, &arg32->buf);
 557         arg64.buf = compat_ptr(cp);
 558         err |= copy_to_user(p, &arg64, sizeof(arg64));
 559
 560         if (err)
 561                 return -EFAULT;
 562
 563         err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
 564         if (err)
 565                 return err;
 566         err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
 567         if (err)
 568                 return -EFAULT;
 569         return err;
 570 }
 571
 572 static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
 573 {
 574         BIG_IOCTL32_Command_struct __user *arg32 =
 575                 (BIG_IOCTL32_Command_struct __user *) arg;
 576         BIG_IOCTL_Command_struct arg64;
 577         BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
 578         int err;
 579         u32 cp;
 580
 581         err = 0;
 582         err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
 583         err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
 584         err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
 585         err |= get_user(arg64.buf_size, &arg32->buf_size);
 586         err |= get_user(arg64.malloc_size, &arg32->malloc_size);
 587         err |= get_user(cp, &arg32->buf);
 588         arg64.buf = compat_ptr(cp);
 589         err |= copy_to_user(p, &arg64, sizeof(arg64));
 590
 591         if (err)
 592                  return -EFAULT;
 593
 594         err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
 595         if (err)
 596                 return err;
 597         err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
 598         if (err)
 599                 return -EFAULT;
 600         return err;
 601 }
 602 #endif
 603 /*
 604  * ioctl
 605  */
 606 static int cciss_ioctl(struct inode *inode, struct file *filep,
 607                 unsigned int cmd, unsigned long arg)
 608 {
 609         struct block_device *bdev = inode->i_bdev;
 610         struct gendisk *disk = bdev->bd_disk;
 611         ctlr_info_t *host = get_host(disk);
 612         drive_info_struct *drv = get_drv(disk);
 613         int ctlr = host->ctlr;
 614         void __user *argp = (void __user *)arg;
 615
 616 #ifdef CCISS_DEBUG
 617         printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
 618 #endif /* CCISS_DEBUG */
 619
 620         switch(cmd) {
 621         case HDIO_GETGEO:
 622         {
 623                 struct hd_geometry driver_geo;
 624                 if (drv->cylinders) {
 625                         driver_geo.heads = drv->heads;
 626                         driver_geo.sectors = drv->sectors;
 627                         driver_geo.cylinders = drv->cylinders;
 628                 } else
 629                         return -ENXIO;
 630                 driver_geo.start= get_start_sect(inode->i_bdev);
 631                 if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry)))
 632                         return  -EFAULT;
 633                 return(0);
 634         }
 635
 636         case CCISS_GETPCIINFO:
 637         {
 638                 cciss_pci_info_struct pciinfo;
 639
 640                 if (!arg) return -EINVAL;
 641                 pciinfo.domain = pci_domain_nr(host->pdev->bus);
 642                 pciinfo.bus = host->pdev->bus->number;
 643                 pciinfo.dev_fn = host->pdev->devfn;
 644                 pciinfo.board_id = host->board_id;
 645                 if (copy_to_user(argp, &pciinfo,  sizeof( cciss_pci_info_struct )))
 646                         return  -EFAULT;
 647                 return(0);
 648         }
 649         case CCISS_GETINTINFO:
 650         {
 651                 cciss_coalint_struct intinfo;
 652                 if (!arg) return -EINVAL;
 653                 intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
 654                 intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
 655                 if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
 656                         return -EFAULT;
 657                 return(0);
 658         }
 659         case CCISS_SETINTINFO:
 660         {
 661                 cciss_coalint_struct intinfo;
 662                 unsigned long flags;
 663                 int i;
 664
 665                 if (!arg) return -EINVAL;
 666                 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
 667                 if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
 668                         return -EFAULT;
 669                 if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
 670
 671                 {
 672 //                      printk("cciss_ioctl: delay and count cannot be 0\n");
 673                         return( -EINVAL);
 674                 }
 675                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
 676                 /* Update the field, and then ring the doorbell */
 677                 writel( intinfo.delay,
 678                         &(host->cfgtable->HostWrite.CoalIntDelay));
 679                 writel( intinfo.count,
 680                         &(host->cfgtable->HostWrite.CoalIntCount));
 681                 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
 682
 683                 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
 684                         if (!(readl(host->vaddr + SA5_DOORBELL)
 685                                         & CFGTBL_ChangeReq))
 686                                 break;
 687                         /* delay and try again */
 688                         udelay(1000);
 689                 }
 690                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
 691                 if (i >= MAX_IOCTL_CONFIG_WAIT)
 692                         return -EAGAIN;
 693                 return(0);
 694         }
 695         case CCISS_GETNODENAME:
 696         {
 697                 NodeName_type NodeName;
 698                 int i;
 699
 700                 if (!arg) return -EINVAL;
 701                 for(i=0;i<16;i++)
 702                         NodeName[i] = readb(&host->cfgtable->ServerName[i]);
 703                 if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
 704                         return  -EFAULT;
 705                 return(0);
 706         }
 707         case CCISS_SETNODENAME:
 708         {
 709                 NodeName_type NodeName;
 710                 unsigned long flags;
 711                 int i;
 712
 713                 if (!arg) return -EINVAL;
 714                 if (!capable(CAP_SYS_ADMIN)) return -EPERM;
 715
 716                 if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
 717                         return -EFAULT;
 718
 719                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
 720
 721                         /* Update the field, and then ring the doorbell */
 722                 for(i=0;i<16;i++)
 723                         writeb( NodeName[i], &host->cfgtable->ServerName[i]);
 724
 725                 writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
 726
 727                 for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
 728                         if (!(readl(host->vaddr + SA5_DOORBELL)
 729                                         & CFGTBL_ChangeReq))
 730                                 break;
 731                         /* delay and try again */
 732                         udelay(1000);
 733                 }
 734                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
 735                 if (i >= MAX_IOCTL_CONFIG_WAIT)
 736                         return -EAGAIN;
 737                 return(0);
 738         }
 739
 740         case CCISS_GETHEARTBEAT:
 741         {
 742                 Heartbeat_type heartbeat;
 743
 744                 if (!arg) return -EINVAL;
 745                 heartbeat = readl(&host->cfgtable->HeartBeat);
 746                 if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
 747                         return -EFAULT;
 748                 return(0);
 749         }
 750         case CCISS_GETBUSTYPES:
 751         {
 752                 BusTypes_type BusTypes;
 753
 754                 if (!arg) return -EINVAL;
 755                 BusTypes = readl(&host->cfgtable->BusTypes);
 756                 if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
 757                         return  -EFAULT;
 758                 return(0);
 759         }
 760         case CCISS_GETFIRMVER:
 761         {
 762                 FirmwareVer_type firmware;
 763
 764                 if (!arg) return -EINVAL;
 765                 memcpy(firmware, host->firm_ver, 4);
 766
 767                 if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
 768                         return -EFAULT;
 769                 return(0);
 770         }
 771         case CCISS_GETDRIVVER:
 772         {
 773                 DriverVer_type DriverVer = DRIVER_VERSION;
 774
 775                 if (!arg) return -EINVAL;
 776
 777                 if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
 778                         return -EFAULT;
 779                 return(0);
 780         }
 781
 782         case CCISS_REVALIDVOLS:
 783                 if (bdev != bdev->bd_contains || drv != host->drv)
 784                         return -ENXIO;
 785                 return revalidate_allvol(host);
 786
 787         case CCISS_GETLUNINFO: {
 788                 LogvolInfo_struct luninfo;
 789
 790                 luninfo.LunID = drv->LunID;
 791                 luninfo.num_opens = drv->usage_count;
 792                 luninfo.num_parts = 0;
 793                 if (copy_to_user(argp, &luninfo,
 794                                 sizeof(LogvolInfo_struct)))
 795                         return -EFAULT;
 796                 return(0);
 797         }
 798         case CCISS_DEREGDISK:
 799                 return deregister_disk(disk);
 800
 801         case CCISS_REGNEWD:
 802                 return register_new_disk(host);
 803
 804         case CCISS_PASSTHRU:
 805         {
 806                 IOCTL_Command_struct iocommand;
 807                 CommandList_struct *c;
 808                 char    *buff = NULL;
 809                 u64bit  temp64;
 810                 unsigned long flags;
 811                 DECLARE_COMPLETION(wait);
 812
 813                 if (!arg) return -EINVAL;
 814
 815                 if (!capable(CAP_SYS_RAWIO)) return -EPERM;
 816
 817                 if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
 818                         return -EFAULT;
 819                 if((iocommand.buf_size < 1) &&
 820                                 (iocommand.Request.Type.Direction != XFER_NONE))
 821                 {
 822                         return -EINVAL;
 823                 }
 824 #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
 825                 /* Check kmalloc limits */
 826                 if(iocommand.buf_size > 128000)
 827                         return -EINVAL;
 828 #endif
 829                 if(iocommand.buf_size > 0)
 830                 {
 831                         buff =  kmalloc(iocommand.buf_size, GFP_KERNEL);
 832                         if( buff == NULL)
 833                                 return -EFAULT;
 834                 }
 835                 if (iocommand.Request.Type.Direction == XFER_WRITE)
 836                 {
 837                         /* Copy the data into the buffer we created */
 838                         if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
 839                         {
 840                                 kfree(buff);
 841                                 return -EFAULT;
 842                         }
 843                 } else {
 844                         memset(buff, 0, iocommand.buf_size);
 845                 }
 846                 if ((c = cmd_alloc(host , 0)) == NULL)
 847                 {
 848                         kfree(buff);
 849                         return -ENOMEM;
 850                 }
 851                         // Fill in the command type
 852                 c->cmd_type = CMD_IOCTL_PEND;
 853                         // Fill in Command Header
 854                 c->Header.ReplyQueue = 0;  // unused in simple mode
 855                 if( iocommand.buf_size > 0)     // buffer to fill
 856                 {
 857                         c->Header.SGList = 1;
 858                         c->Header.SGTotal= 1;
 859                 } else  // no buffers to fill
 860                 {
 861                         c->Header.SGList = 0;
 862                         c->Header.SGTotal= 0;
 863                 }
 864                 c->Header.LUN = iocommand.LUN_info;
 865                 c->Header.Tag.lower = c->busaddr;  // use the kernel address the cmd block for tag
 866
 867                 // Fill in Request block
 868                 c->Request = iocommand.Request;
 869
 870                 // Fill in the scatter gather information
 871                 if (iocommand.buf_size > 0 )
 872                 {
 873                         temp64.val = pci_map_single( host->pdev, buff,
 874                                         iocommand.buf_size,
 875                                 PCI_DMA_BIDIRECTIONAL);
 876                         c->SG[0].Addr.lower = temp64.val32.lower;
 877                         c->SG[0].Addr.upper = temp64.val32.upper;
 878                         c->SG[0].Len = iocommand.buf_size;
 879                         c->SG[0].Ext = 0;  // we are not chaining
 880                 }
 881                 c->waiting = &wait;
 882
 883                 /* Put the request on the tail of the request queue */
 884                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
 885                 addQ(&host->reqQ, c);
 886                 host->Qdepth++;
 887                 start_io(host);
 888                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
 889
 890                 wait_for_completion(&wait);
 891
 892                 /* unlock the buffers from DMA */
 893                 temp64.val32.lower = c->SG[0].Addr.lower;
 894                 temp64.val32.upper = c->SG[0].Addr.upper;
 895                 pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
 896                         iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
 897
 898                 /* Copy the error information out */
 899                 iocommand.error_info = *(c->err_info);
 900                 if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
 901                 {
 902                         kfree(buff);
 903                         cmd_free(host, c, 0);
 904                         return( -EFAULT);
 905                 }
 906
 907                 if (iocommand.Request.Type.Direction == XFER_READ)
 908                 {
 909                         /* Copy the data out of the buffer we created */
 910                         if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
 911                         {
 912                                 kfree(buff);
 913                                 cmd_free(host, c, 0);
 914                                 return -EFAULT;
 915                         }
 916                 }
 917                 kfree(buff);
 918                 cmd_free(host, c, 0);
 919                 return(0);
 920         }
 921         case CCISS_BIG_PASSTHRU: {
 922                 BIG_IOCTL_Command_struct *ioc;
 923                 CommandList_struct *c;
 924                 unsigned char **buff = NULL;
 925                 int     *buff_size = NULL;
 926                 u64bit  temp64;
 927                 unsigned long flags;
 928                 BYTE sg_used = 0;
 929                 int status = 0;
 930                 int i;
 931                 DECLARE_COMPLETION(wait);
 932                 __u32   left;
 933                 __u32   sz;
 934                 BYTE    __user *data_ptr;
 935
 936                 if (!arg)
 937                         return -EINVAL;
 938                 if (!capable(CAP_SYS_RAWIO))
 939                         return -EPERM;
 940                 ioc = (BIG_IOCTL_Command_struct *)
 941                         kmalloc(sizeof(*ioc), GFP_KERNEL);
 942                 if (!ioc) {
 943                         status = -ENOMEM;
 944                         goto cleanup1;
 945                 }
 946                 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
 947                         status = -EFAULT;
 948                         goto cleanup1;
 949                 }
 950                 if ((ioc->buf_size < 1) &&
 951                         (ioc->Request.Type.Direction != XFER_NONE)) {
 952                                 status = -EINVAL;
 953                                 goto cleanup1;
 954                 }
 955                 /* Check kmalloc limits  using all SGs */
 956                 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
 957                         status = -EINVAL;
 958                         goto cleanup1;
 959                 }
 960                 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
 961                         status = -EINVAL;
 962                         goto cleanup1;
 963                 }
 964                 buff = (unsigned char **) kmalloc(MAXSGENTRIES *
 965                                 sizeof(char *), GFP_KERNEL);
 966                 if (!buff) {
 967                         status = -ENOMEM;
 968                         goto cleanup1;
 969                 }
 970                 memset(buff, 0, MAXSGENTRIES);
 971                 buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
 972                                         GFP_KERNEL);
 973                 if (!buff_size) {
 974                         status = -ENOMEM;
 975                         goto cleanup1;
 976                 }
 977                 left = ioc->buf_size;
 978                 data_ptr = ioc->buf;
 979                 while (left) {
 980                         sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
 981                         buff_size[sg_used] = sz;
 982                         buff[sg_used] = kmalloc(sz, GFP_KERNEL);
 983                         if (buff[sg_used] == NULL) {
 984                                 status = -ENOMEM;
 985                                 goto cleanup1;
 986                         }
 987                         if (ioc->Request.Type.Direction == XFER_WRITE &&
 988                                 copy_from_user(buff[sg_used], data_ptr, sz)) {
 989                                         status = -ENOMEM;
 990                                         goto cleanup1;
 991                         } else {
 992                                 memset(buff[sg_used], 0, sz);
 993                         }
 994                         left -= sz;
 995                         data_ptr += sz;
 996                         sg_used++;
 997                 }
 998                 if ((c = cmd_alloc(host , 0)) == NULL) {
 999                         status = -ENOMEM;
1000                         goto cleanup1;
1001                 }
1002                 c->cmd_type = CMD_IOCTL_PEND;
1003                 c->Header.ReplyQueue = 0;
1004
1005                 if( ioc->buf_size > 0) {
1006                         c->Header.SGList = sg_used;
1007                         c->Header.SGTotal= sg_used;
1008                 } else {
1009                         c->Header.SGList = 0;
1010                         c->Header.SGTotal= 0;
1011                 }
1012                 c->Header.LUN = ioc->LUN_info;
1013                 c->Header.Tag.lower = c->busaddr;
1014
1015                 c->Request = ioc->Request;
1016                 if (ioc->buf_size > 0 ) {
1017                         int i;
1018                         for(i=0; i<sg_used; i++) {
1019                                 temp64.val = pci_map_single( host->pdev, buff[i],
1020                                         buff_size[i],
1021                                         PCI_DMA_BIDIRECTIONAL);
1022                                 c->SG[i].Addr.lower = temp64.val32.lower;
1023                                 c->SG[i].Addr.upper = temp64.val32.upper;
1024                                 c->SG[i].Len = buff_size[i];
1025                                 c->SG[i].Ext = 0;  /* we are not chaining */
1026                         }
1027                 }
1028                 c->waiting = &wait;
1029                 /* Put the request on the tail of the request queue */
1030                 spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1031                 addQ(&host->reqQ, c);
1032                 host->Qdepth++;
1033                 start_io(host);
1034                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1035                 wait_for_completion(&wait);
1036                 /* unlock the buffers from DMA */
1037                 for(i=0; i<sg_used; i++) {
1038                         temp64.val32.lower = c->SG[i].Addr.lower;
1039                         temp64.val32.upper = c->SG[i].Addr.upper;
1040                         pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
1041                                 buff_size[i], PCI_DMA_BIDIRECTIONAL);
1042                 }
1043                 /* Copy the error information out */
1044                 ioc->error_info = *(c->err_info);
1045                 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
1046                         cmd_free(host, c, 0);
1047                         status = -EFAULT;
1048                         goto cleanup1;
1049                 }
1050                 if (ioc->Request.Type.Direction == XFER_READ) {
1051                         /* Copy the data out of the buffer we created */
1052                         BYTE __user *ptr = ioc->buf;
1053                         for(i=0; i< sg_used; i++) {
1054                                 if (copy_to_user(ptr, buff[i], buff_size[i])) {
1055                                         cmd_free(host, c, 0);
1056                                         status = -EFAULT;
1057                                         goto cleanup1;
1058                                 }
1059                                 ptr += buff_size[i];
1060                         }
1061                 }
1062                 cmd_free(host, c, 0);
1063                 status = 0;
1064 cleanup1:
1065                 if (buff) {
1066                         for(i=0; i<sg_used; i++)
1067                                 if(buff[i] != NULL)
1068                                         kfree(buff[i]);
1069                         kfree(buff);
1070                 }
1071                 if (buff_size)
1072                         kfree(buff_size);
1073                 if (ioc)
1074                         kfree(ioc);
1075                 return(status);
1076         }
1077         default:
1078                 return -ENOTTY;
1079         }
1080
1081 }
1082
1083 /*
1084  * revalidate_allvol is for online array config utilities.  After a
1085  * utility reconfigures the drives in the array, it can use this function
1086  * (through an ioctl) to make the driver zap any previous disk structs for
1087  * that controller and get new ones.
1088  *
1089  * Right now I'm using the getgeometry() function to do this, but this
1090  * function should probably be finer grained and allow you to revalidate one
1091  * particualar logical volume (instead of all of them on a particular
1092  * controller).
1093  */
1094 static int revalidate_allvol(ctlr_info_t *host)
1095 {
1096         int ctlr = host->ctlr, i;
1097         unsigned long flags;
1098
1099         spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1100         if (host->usage_count > 1) {
1101                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1102                 printk(KERN_WARNING "cciss: Device busy for volume"
1103                         " revalidation (usage=%d)\n", host->usage_count);
1104                 return -EBUSY;
1105         }
1106         host->usage_count++;
1107         spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1108
1109         for(i=0; i< NWD; i++) {
1110                 struct gendisk *disk = host->gendisk[i];
1111                 if (disk->flags & GENHD_FL_UP)
1112                         del_gendisk(disk);
1113         }
1114
1115         /*
1116          * Set the partition and block size structures for all volumes
1117          * on this controller to zero.  We will reread all of this data
1118          */
1119         memset(host->drv,        0, sizeof(drive_info_struct)
1120                                                 * CISS_MAX_LUN);
1121         /*
1122          * Tell the array controller not to give us any interrupts while
1123          * we check the new geometry.  Then turn interrupts back on when
1124          * we're done.
1125          */
1126         host->access.set_intr_mask(host, CCISS_INTR_OFF);
1127         cciss_getgeometry(ctlr);
1128         host->access.set_intr_mask(host, CCISS_INTR_ON);
1129
1130         /* Loop through each real device */
1131         for (i = 0; i < NWD; i++) {
1132                 struct gendisk *disk = host->gendisk[i];
1133                 drive_info_struct *drv = &(host->drv[i]);
1134                 /* we must register the controller even if no disks exist */
1135                 /* this is for the online array utilities */
1136                 if (!drv->heads && i)
1137                         continue;
1138                 blk_queue_hardsect_size(drv->queue, drv->block_size);
1139                 set_capacity(disk, drv->nr_blocks);
1140                 add_disk(disk);
1141         }
1142         host->usage_count--;
1143         return 0;
1144 }
1145
1146 static int deregister_disk(struct gendisk *disk)
1147 {
1148         unsigned long flags;
1149         ctlr_info_t *h = get_host(disk);
1150         drive_info_struct *drv = get_drv(disk);
1151         int ctlr = h->ctlr;
1152
1153         if (!capable(CAP_SYS_RAWIO))
1154                 return -EPERM;
1155
1156         spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1157         /* make sure logical volume is NOT is use */
1158         if( drv->usage_count > 1) {
1159                 spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1160                 return -EBUSY;
1161         }
1162         drv->usage_count++;
1163         spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1164
1165         /* invalidate the devices and deregister the disk */
1166         if (disk->flags & GENHD_FL_UP)
1167                 del_gendisk(disk);
1168         /* check to see if it was the last disk */
1169         if (drv == h->drv + h->highest_lun) {
1170                 /* if so, find the new hightest lun */
1171                 int i, newhighest =-1;
1172                 for(i=0; i<h->highest_lun; i++) {
1173                         /* if the disk has size > 0, it is available */
1174                         if (h->drv[i].nr_blocks)
1175                                 newhighest = i;
1176                 }
1177                 h->highest_lun = newhighest;
1178
1179         }
1180         --h->num_luns;
1181         /* zero out the disk size info */
1182         drv->nr_blocks = 0;
1183         drv->block_size = 0;
1184         drv->cylinders = 0;
1185         drv->LunID = 0;
1186         return(0);
1187 }
1188 static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
1189         size_t size,
1190         unsigned int use_unit_num, /* 0: address the controller,
1191                                       1: address logical volume log_unit,
1192                                       2: periph device address is scsi3addr */
1193         unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
1194         int cmd_type)
1195 {
1196         ctlr_info_t *h= hba[ctlr];
1197         u64bit buff_dma_handle;
1198         int status = IO_OK;
1199
1200         c->cmd_type = CMD_IOCTL_PEND;
1201         c->Header.ReplyQueue = 0;
1202         if( buff != NULL) {
1203                 c->Header.SGList = 1;
1204                 c->Header.SGTotal= 1;
1205         } else {
1206                 c->Header.SGList = 0;
1207                 c->Header.SGTotal= 0;
1208         }
1209         c->Header.Tag.lower = c->busaddr;
1210
1211         c->Request.Type.Type = cmd_type;
1212         if (cmd_type == TYPE_CMD) {
1213                 switch(cmd) {
1214                 case  CISS_INQUIRY:
1215                         /* If the logical unit number is 0 then, this is going
1216                         to controller so It's a physical command
1217                         mode = 0 target = 0.  So we have nothing to write.
1218                         otherwise, if use_unit_num == 1,
1219                         mode = 1(volume set addressing) target = LUNID
1220                         otherwise, if use_unit_num == 2,
1221                         mode = 0(periph dev addr) target = scsi3addr */
1222                         if (use_unit_num == 1) {
1223                                 c->Header.LUN.LogDev.VolId=
1224                                         h->drv[log_unit].LunID;
1225                                 c->Header.LUN.LogDev.Mode = 1;
1226                         } else if (use_unit_num == 2) {
1227                                 memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
1228                                 c->Header.LUN.LogDev.Mode = 0;
1229                         }
1230                         /* are we trying to read a vital product page */
1231                         if(page_code != 0) {
1232                                 c->Request.CDB[1] = 0x01;
1233                                 c->Request.CDB[2] = page_code;
1234                         }
1235                         c->Request.CDBLen = 6;
1236                         c->Request.Type.Attribute = ATTR_SIMPLE;
1237                         c->Request.Type.Direction = XFER_READ;
1238                         c->Request.Timeout = 0;
1239                         c->Request.CDB[0] =  CISS_INQUIRY;
1240                         c->Request.CDB[4] = size  & 0xFF;
1241                 break;
1242                 case CISS_REPORT_LOG:
1243                 case CISS_REPORT_PHYS:
1244                         /* Talking to controller so It's a physical command
1245                            mode = 00 target = 0.  Nothing to write.
1246                         */
1247                         c->Request.CDBLen = 12;
1248                         c->Request.Type.Attribute = ATTR_SIMPLE;
1249                         c->Request.Type.Direction = XFER_READ;
1250                         c->Request.Timeout = 0;
1251                         c->Request.CDB[0] = cmd;
1252                         c->Request.CDB[6] = (size >> 24) & 0xFF;  //MSB
1253                         c->Request.CDB[7] = (size >> 16) & 0xFF;
1254                         c->Request.CDB[8] = (size >> 8) & 0xFF;
1255                         c->Request.CDB[9] = size & 0xFF;
1256                         break;
1257
1258                 case CCISS_READ_CAPACITY:
1259                         c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
1260                         c->Header.LUN.LogDev.Mode = 1;
1261                         c->Request.CDBLen = 10;
1262                         c->Request.Type.Attribute = ATTR_SIMPLE;
1263                         c->Request.Type.Direction = XFER_READ;
1264                         c->Request.Timeout = 0;
1265                         c->Request.CDB[0] = cmd;
1266                 break;
1267                 case CCISS_CACHE_FLUSH:
1268                         c->Request.CDBLen = 12;
1269                         c->Request.Type.Attribute = ATTR_SIMPLE;
1270                         c->Request.Type.Direction = XFER_WRITE;
1271                         c->Request.Timeout = 0;
1272                         c->Request.CDB[0] = BMIC_WRITE;
1273                         c->Request.CDB[6] = BMIC_CACHE_FLUSH;
1274                 break;
1275                 default:
1276                         printk(KERN_WARNING
1277                                 "cciss%d:  Unknown Command 0x%c\n", ctlr, cmd);
1278                         return(IO_ERROR);
1279                 }
1280         } else if (cmd_type == TYPE_MSG) {
1281                 switch (cmd) {
1282                 case 3: /* No-Op message */
1283                         c->Request.CDBLen = 1;
1284                         c->Request.Type.Attribute = ATTR_SIMPLE;
1285                         c->Request.Type.Direction = XFER_WRITE;
1286                         c->Request.Timeout = 0;
1287                         c->Request.CDB[0] = cmd;
1288                         break;
1289                 default:
1290                         printk(KERN_WARNING
1291                                 "cciss%d: unknown message type %d\n",
1292                                 ctlr, cmd);
1293                         return IO_ERROR;
1294                 }
1295         } else {
1296                 printk(KERN_WARNING
1297                         "cciss%d: unknown command type %d\n", ctlr, cmd_type);
1298                 return IO_ERROR;
1299         }
1300         /* Fill in the scatter gather information */
1301         if (size > 0) {
1302                 buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
1303                         buff, size, PCI_DMA_BIDIRECTIONAL);
1304                 c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
1305                 c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
1306                 c->SG[0].Len = size;
1307                 c->SG[0].Ext = 0;  /* we are not chaining */
1308         }
1309         return status;
1310 }
1311 static int sendcmd_withirq(__u8 cmd,
1312         int     ctlr,
1313         void    *buff,
1314         size_t  size,
1315         unsigned int use_unit_num,
1316         unsigned int log_unit,
1317         __u8    page_code,
1318         int cmd_type)
1319 {
1320         ctlr_info_t *h = hba[ctlr];
1321         CommandList_struct *c;
1322         u64bit  buff_dma_handle;
1323         unsigned long flags;
1324         int return_status;
1325         DECLARE_COMPLETION(wait);
1326
1327         if ((c = cmd_alloc(h , 0)) == NULL)
1328                 return -ENOMEM;
1329         return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1330                 log_unit, page_code, NULL, cmd_type);
1331         if (return_status != IO_OK) {
1332                 cmd_free(h, c, 0);
1333                 return return_status;
1334         }
1335 resend_cmd2:
1336         c->waiting = &wait;
1337
1338         /* Put the request on the tail of the queue and send it */
1339         spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
1340         addQ(&h->reqQ, c);
1341         h->Qdepth++;
1342         start_io(h);
1343         spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
1344
1345         wait_for_completion(&wait);
1346
1347         if(c->err_info->CommandStatus != 0)
1348         { /* an error has occurred */
1349                 switch(c->err_info->CommandStatus)
1350                 {
1351                         case CMD_TARGET_STATUS:
1352                                 printk(KERN_WARNING "cciss: cmd %p has "
1353                                         " completed with errors\n", c);
1354                                 if( c->err_info->ScsiStatus)
1355                                 {
1356                                         printk(KERN_WARNING "cciss: cmd %p "
1357                                         "has SCSI Status = %x\n",
1358                                                 c,
1359                                                 c->err_info->ScsiStatus);
1360                                 }
1361
1362                         break;
1363                         case CMD_DATA_UNDERRUN:
1364                         case CMD_DATA_OVERRUN:
1365                         /* expected for inquire and report lun commands */
1366                         break;
1367                         case CMD_INVALID:
1368                                 printk(KERN_WARNING "cciss: Cmd %p is "
1369                                         "reported invalid\n", c);
1370                                 return_status = IO_ERROR;
1371                         break;
1372                         case CMD_PROTOCOL_ERR:
1373                                 printk(KERN_WARNING "cciss: cmd %p has "
1374                                         "protocol error \n", c);
1375                                 return_status = IO_ERROR;
1376                         break;
1377 case CMD_HARDWARE_ERR:
1378                                 printk(KERN_WARNING "cciss: cmd %p had "
1379                                         " hardware error\n", c);
1380                                 return_status = IO_ERROR;
1381                         break;
1382                         case CMD_CONNECTION_LOST:
1383                                 printk(KERN_WARNING "cciss: cmd %p had "
1384                                         "connection lost\n", c);
1385                                 return_status = IO_ERROR;
1386                         break;
1387                         case CMD_ABORTED:
1388                                 printk(KERN_WARNING "cciss: cmd %p was "
1389                                         "aborted\n", c);
1390                                 return_status = IO_ERROR;
1391                         break;
1392                         case CMD_ABORT_FAILED:
1393                                 printk(KERN_WARNING "cciss: cmd %p reports "
1394                                         "abort failed\n", c);
1395                                 return_status = IO_ERROR;
1396                         break;
1397                         case CMD_UNSOLICITED_ABORT:
1398                                 printk(KERN_WARNING
1399                                         "cciss%d: unsolicited abort %p\n",
1400                                         ctlr, c);
1401                                 if (c->retry_count < MAX_CMD_RETRIES) {
1402                                         printk(KERN_WARNING
1403                                                 "cciss%d: retrying %p\n",
1404                                                 ctlr, c);
1405                                         c->retry_count++;
1406                                         /* erase the old error information */
1407                                         memset(c->err_info, 0,
1408                                                 sizeof(ErrorInfo_struct));
1409                                         return_status = IO_OK;
1410                                         INIT_COMPLETION(wait);
1411                                         goto resend_cmd2;
1412                                 }
1413                                 return_status = IO_ERROR;
1414                         break;
1415                         default:
1416                                 printk(KERN_WARNING "cciss: cmd %p returned "
1417                                         "unknown status %x\n", c,
1418                                                 c->err_info->CommandStatus);
1419                                 return_status = IO_ERROR;
1420                 }
1421         }
1422         /* unlock the buffers from DMA */
1423         pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
1424                         size, PCI_DMA_BIDIRECTIONAL);
1425         cmd_free(h, c, 0);
1426         return(return_status);
1427
1428 }
1429 static void cciss_geometry_inquiry(int ctlr, int logvol,
1430                         int withirq, unsigned int total_size,
1431                         unsigned int block_size, InquiryData_struct *inq_buff,
1432                         drive_info_struct *drv)
1433 {
1434         int return_code;
1435         memset(inq_buff, 0, sizeof(InquiryData_struct));
1436         if (withirq)
1437                 return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
1438                         inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
1439         else
1440                 return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
1441                         sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
1442         if (return_code == IO_OK) {
1443                 if(inq_buff->data_byte[8] == 0xFF) {
1444                         printk(KERN_WARNING
1445                                 "cciss: reading geometry failed, volume "
1446                                 "does not support reading geometry\n");
1447                         drv->block_size = block_size;
1448                         drv->nr_blocks = total_size;
1449                         drv->heads = 255;
1450                         drv->sectors = 32; // Sectors per track
1451                         drv->cylinders = total_size / 255 / 32;
1452                 } else {
1453                         unsigned int t;
1454
1455                         drv->block_size = block_size;
1456                         drv->nr_blocks = total_size;
1457                         drv->heads = inq_buff->data_byte[6];
1458                         drv->sectors = inq_buff->data_byte[7];
1459                         drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
1460                         drv->cylinders += inq_buff->data_byte[5];
1461                         drv->raid_level = inq_buff->data_byte[8];
1462                         t = drv->heads * drv->sectors;
1463                         if (t > 1) {
1464                                 drv->cylinders = total_size/t;
1465                         }
1466                 }
1467         } else { /* Get geometry failed */
1468                 printk(KERN_WARNING "cciss: reading geometry failed\n");
1469         }
1470         printk(KERN_INFO "      heads= %d, sectors= %d, cylinders= %d\n\n",
1471                 drv->heads, drv->sectors, drv->cylinders);
1472 }
1473 static void
1474 cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
1475                 int withirq, unsigned int *total_size, unsigned int *block_size)
1476 {
1477         int return_code;
1478         memset(buf, 0, sizeof(*buf));
1479         if (withirq)
1480                 return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
1481                         ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
1482         else
1483                 return_code = sendcmd(CCISS_READ_CAPACITY,
1484                         ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
1485         if (return_code == IO_OK) {
1486                 *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
1487                 *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
1488         } else { /* read capacity command failed */
1489                 printk(KERN_WARNING "cciss: read capacity failed\n");
1490                 *total_size = 0;
1491                 *block_size = BLOCK_SIZE;
1492         }
1493         printk(KERN_INFO "      blocks= %u block_size= %d\n",
1494                 *total_size, *block_size);
1495         return;
1496 }
1497
1498 static int register_new_disk(ctlr_info_t *h)
1499 {
1500         struct gendisk *disk;
1501         int ctlr = h->ctlr;
1502         int i;
1503         int num_luns;
1504         int logvol;
1505         int new_lun_found = 0;
1506         int new_lun_index = 0;
1507         int free_index_found = 0;
1508         int free_index = 0;
1509         ReportLunData_struct *ld_buff = NULL;
1510         ReadCapdata_struct *size_buff = NULL;
1511         InquiryData_struct *inq_buff = NULL;
1512         int return_code;
1513         int listlength = 0;
1514         __u32 lunid = 0;
1515         unsigned int block_size;
1516         unsigned int total_size;
1517
1518         if (!capable(CAP_SYS_RAWIO))
1519                 return -EPERM;
1520         /* if we have no space in our disk array left to add anything */
1521         if(  h->num_luns >= CISS_MAX_LUN)
1522                 return -EINVAL;
1523
1524         ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
1525         if (ld_buff == NULL)
1526                 goto mem_msg;
1527         memset(ld_buff, 0, sizeof(ReportLunData_struct));
1528         size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1529         if (size_buff == NULL)
1530                 goto mem_msg;
1531         inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1532         if (inq_buff == NULL)
1533                 goto mem_msg;
1534
1535         return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
1536                         sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);
1537
1538         if( return_code == IO_OK)
1539         {
1540
1541                 // printk("LUN Data\n--------------------------\n");
1542
1543                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
1544                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
1545                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
1546                 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
1547         } else /* reading number of logical volumes failed */
1548         {
1549                 printk(KERN_WARNING "cciss: report logical volume"
1550                         " command failed\n");
1551                 listlength = 0;
1552                 goto free_err;
1553         }
1554         num_luns = listlength / 8; // 8 bytes pre entry
1555         if (num_luns > CISS_MAX_LUN)
1556         {
1557                 num_luns = CISS_MAX_LUN;
1558         }
1559 #ifdef CCISS_DEBUG
1560         printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
1561                 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
1562                 ld_buff->LUNListLength[3],  num_luns);
1563 #endif
1564         for(i=0; i<  num_luns; i++)
1565         {
1566                 int j;
1567                 int lunID_found = 0;
1568
1569                 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
1570                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
1571                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
1572                 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
1573
1574                 /* check to see if this is a new lun */
1575                 for(j=0; j <= h->highest_lun; j++)
1576                 {
1577 #ifdef CCISS_DEBUG
1578                         printk("Checking %d %x against %x\n", j,h->drv[j].LunID,
1579                                                 lunid);
1580 #endif /* CCISS_DEBUG */
1581                         if (h->drv[j].LunID == lunid)
1582                         {
1583                                 lunID_found = 1;
1584                                 break;
1585                         }
1586
1587                 }
1588                 if( lunID_found == 1)
1589                         continue;
1590                 else
1591                 {       /* It is the new lun we have been looking for */
1592 #ifdef CCISS_DEBUG
1593                         printk("new lun found at %d\n", i);
1594 #endif /* CCISS_DEBUG */
1595                         new_lun_index = i;
1596                         new_lun_found = 1;
1597                         break;
1598                 }
1599          }
1600          if (!new_lun_found)
1601          {
1602                 printk(KERN_WARNING "cciss:  New Logical Volume not found\n");
1603                 goto free_err;
1604          }
1605          /* Now find the free index     */
1606         for(i=0; i <CISS_MAX_LUN; i++)
1607         {
1608 #ifdef CCISS_DEBUG
1609                 printk("Checking Index %d\n", i);
1610 #endif /* CCISS_DEBUG */
1611                 if(h->drv[i].LunID == 0)
1612                 {
1613 #ifdef CCISS_DEBUG
1614                         printk("free index found at %d\n", i);
1615 #endif /* CCISS_DEBUG */
1616                         free_index_found = 1;
1617                         free_index = i;
1618                         break;
1619                 }
1620         }
1621         if (!free_index_found)
1622         {
1623                 printk(KERN_WARNING "cciss: unable to find free slot for disk\n");
1624                 goto free_err;
1625          }
1626
1627         logvol = free_index;
1628         h->drv[logvol].LunID = lunid;
1629                 /* there could be gaps in lun numbers, track hightest */
1630         if(h->highest_lun < lunid)
1631                 h->highest_lun = logvol;
1632         cciss_read_capacity(ctlr, logvol, size_buff, 1,
1633                 &total_size, &block_size);
1634         cciss_geometry_inquiry(ctlr, logvol, 1, total_size, block_size,
1635                         inq_buff, &h->drv[logvol]);
1636         h->drv[logvol].usage_count = 0;
1637         ++h->num_luns;
1638         /* setup partitions per disk */
1639         disk = h->gendisk[logvol];
1640         set_capacity(disk, h->drv[logvol].nr_blocks);
1641         /* if it's the controller it's already added */
1642         if(logvol)
1643                 add_disk(disk);
1644 freeret:
1645         kfree(ld_buff);
1646         kfree(size_buff);
1647         kfree(inq_buff);
1648         return (logvol);
1649 mem_msg:
1650         printk(KERN_ERR "cciss: out of memory\n");
1651 free_err:
1652         logvol = -1;
1653         goto freeret;
1654 }
1655
1656 static int cciss_revalidate(struct gendisk *disk)
1657 {
1658         ctlr_info_t *h = get_host(disk);
1659         drive_info_struct *drv = get_drv(disk);
1660         int logvol;
1661         int FOUND=0;
1662         unsigned int block_size;
1663         unsigned int total_size;
1664         ReadCapdata_struct *size_buff = NULL;
1665         InquiryData_struct *inq_buff = NULL;
1666
1667         for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
1668         {
1669                 if(h->drv[logvol].LunID == drv->LunID) {
1670                         FOUND=1;
1671                         break;
1672                 }
1673         }
1674
1675         if (!FOUND) return 1;
1676
1677         size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
1678         if (size_buff == NULL)
1679         {
1680                 printk(KERN_WARNING "cciss: out of memory\n");
1681                 return 1;
1682         }
1683         inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
1684         if (inq_buff == NULL)
1685         {
1686                 printk(KERN_WARNING "cciss: out of memory\n");
1687                 kfree(size_buff);
1688                 return 1;
1689         }
1690
1691         cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
1692         cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
1693
1694         blk_queue_hardsect_size(drv->queue, drv->block_size);
1695         set_capacity(disk, drv->nr_blocks);
1696
1697         kfree(size_buff);
1698         kfree(inq_buff);
1699         return 0;
1700 }
1701
1702 /*
1703  *   Wait polling for a command to complete.
1704  *   The memory mapped FIFO is polled for the completion.
1705  *   Used only at init time, interrupts from the HBA are disabled.
1706  */
1707 static unsigned long pollcomplete(int ctlr)
1708 {
1709         unsigned long done;
1710         int i;
1711
1712         /* Wait (up to 20 seconds) for a command to complete */
1713
1714         for (i = 20 * HZ; i > 0; i--) {
1715                 done = hba[ctlr]->access.command_completed(hba[ctlr]);
1716                 if (done == FIFO_EMPTY) {
1717                         set_current_state(TASK_UNINTERRUPTIBLE);
1718                         schedule_timeout(1);
1719                 } else
1720                         return (done);
1721         }
1722         /* Invalid address to tell caller we ran out of time */
1723         return 1;
1724 }
1725 /*
1726  * Send a command to the controller, and wait for it to complete.
1727  * Only used at init time.
1728  */
1729 static int sendcmd(
1730         __u8    cmd,
1731         int     ctlr,
1732         void    *buff,
1733         size_t  size,
1734         unsigned int use_unit_num, /* 0: address the controller,
1735                                       1: address logical volume log_unit,
1736                                       2: periph device address is scsi3addr */
1737         unsigned int log_unit,
1738         __u8    page_code,
1739         unsigned char *scsi3addr,
1740         int cmd_type)
1741 {
1742         CommandList_struct *c;
1743         int i;
1744         unsigned long complete;
1745         ctlr_info_t *info_p= hba[ctlr];
1746         u64bit buff_dma_handle;
1747         int status;
1748
1749         if ((c = cmd_alloc(info_p, 1)) == NULL) {
1750                 printk(KERN_WARNING "cciss: unable to get memory");
1751                 return(IO_ERROR);
1752         }
1753         status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
1754                 log_unit, page_code, scsi3addr, cmd_type);
1755         if (status != IO_OK) {
1756                 cmd_free(info_p, c, 1);
1757                 return status;
1758         }
1759 resend_cmd1:
1760         /*
1761          * Disable interrupt
1762          */
1763 #ifdef CCISS_DEBUG
1764         printk(KERN_DEBUG "cciss: turning intr off\n");
1765 #endif /* CCISS_DEBUG */
1766         info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
1767
1768         /* Make sure there is room in the command FIFO */
1769         /* Actually it should be completely empty at this time. */
1770         for (i = 200000; i > 0; i--)
1771         {
1772                 /* if fifo isn't full go */
1773                 if (!(info_p->access.fifo_full(info_p)))
1774                 {
1775
1776                         break;
1777                 }
1778                 udelay(10);
1779                 printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
1780                         " waiting!\n", ctlr);
1781         }
1782         /*
1783          * Send the cmd
1784          */
1785         info_p->access.submit_command(info_p, c);
1786         complete = pollcomplete(ctlr);
1787
1788 #ifdef CCISS_DEBUG
1789         printk(KERN_DEBUG "cciss: command completed\n");
1790 #endif /* CCISS_DEBUG */
1791
1792         if (complete != 1) {
1793                 if ( (complete & CISS_ERROR_BIT)
1794                      && (complete & ~CISS_ERROR_BIT) == c->busaddr)
1795                      {
1796                         /* if data overrun or underun on Report command
1797                                 ignore it
1798                         */
1799                         if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
1800                              (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
1801                              (c->Request.CDB[0] == CISS_INQUIRY)) &&
1802                                 ((c->err_info->CommandStatus ==
1803                                         CMD_DATA_OVERRUN) ||
1804                                  (c->err_info->CommandStatus ==
1805                                         CMD_DATA_UNDERRUN)
1806                                 ))
1807                         {
1808                                 complete = c->busaddr;
1809                         } else {
1810                                 if (c->err_info->CommandStatus ==
1811                                                 CMD_UNSOLICITED_ABORT) {
1812                                         printk(KERN_WARNING "cciss%d: "
1813                                                 "unsolicited abort %p\n",
1814                                                 ctlr, c);
1815                                         if (c->retry_count < MAX_CMD_RETRIES) {
1816                                                 printk(KERN_WARNING
1817                                                    "cciss%d: retrying %p\n",
1818                                                    ctlr, c);
1819                                                 c->retry_count++;
1820                                                 /* erase the old error */
1821                                                 /* information */
1822                                                 memset(c->err_info, 0,
1823                                                    sizeof(ErrorInfo_struct));
1824                                                 goto resend_cmd1;
1825                                         } else {
1826                                                 printk(KERN_WARNING
1827                                                    "cciss%d: retried %p too "
1828                                                    "many times\n", ctlr, c);
1829                                                 status = IO_ERROR;
1830                                                 goto cleanup1;
1831                                         }
1832                                 }
1833                                 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1834                                 " Error %x \n", ctlr,
1835                                         c->err_info->CommandStatus);
1836                                 printk(KERN_WARNING "ciss ciss%d: sendcmd"
1837                                 " offensive info\n"
1838                                 "  size %x\n   num %x   value %x\n", ctlr,
1839                                   c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
1840                                   c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
1841                                   c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
1842                                 status = IO_ERROR;
1843                                 goto cleanup1;
1844                         }
1845                 }
1846                 if (complete != c->busaddr) {
1847                         printk( KERN_WARNING "cciss cciss%d: SendCmd "
1848                       "Invalid command list address returned! (%lx)\n",
1849                                 ctlr, complete);
1850                         status = IO_ERROR;
1851                         goto cleanup1;
1852                 }
1853         } else {
1854                 printk( KERN_WARNING
1855                         "cciss cciss%d: SendCmd Timeout out, "
1856                         "No command list address returned!\n",
1857                         ctlr);
1858                 status = IO_ERROR;
1859         }
1860
1861 cleanup1:
1862         /* unlock the data buffer from DMA */
1863         pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
1864                                 size, PCI_DMA_BIDIRECTIONAL);
1865         cmd_free(info_p, c, 1);
1866         return (status);
1867 }
1868 /*
1869  * Map (physical) PCI mem into (virtual) kernel space
1870  */
1871 static void __iomem *remap_pci_mem(ulong base, ulong size)
1872 {
1873         ulong page_base        = ((ulong) base) & PAGE_MASK;
1874         ulong page_offs        = ((ulong) base) - page_base;
1875         void __iomem *page_remapped = ioremap(page_base, page_offs+size);
1876
1877         return page_remapped ? (page_remapped + page_offs) : NULL;
1878 }
1879
1880 /*
1881  * Takes jobs of the Q and sends them to the hardware, then puts it on
1882  * the Q to wait for completion.
1883  */
1884 static void start_io( ctlr_info_t *h)
1885 {
1886         CommandList_struct *c;
1887
1888         while(( c = h->reqQ) != NULL )
1889         {
1890                 /* can't do anything if fifo is full */
1891                 if ((h->access.fifo_full(h))) {
1892                         printk(KERN_WARNING "cciss: fifo full\n");
1893                         break;
1894                 }
1895
1896                 /* Get the frist entry from the Request Q */
1897                 removeQ(&(h->reqQ), c);
1898                 h->Qdepth--;
1899
1900                 /* Tell the controller execute command */
1901                 h->access.submit_command(h, c);
1902
1903                 /* Put job onto the completed Q */
1904                 addQ (&(h->cmpQ), c);
1905         }
1906 }
1907
1908 static inline void complete_buffers(struct bio *bio, int status)
1909 {
1910         while (bio) {
1911                 struct bio *xbh = bio->bi_next;
1912                 int nr_sectors = bio_sectors(bio);
1913
1914                 bio->bi_next = NULL;
1915                 blk_finished_io(len);
1916                 bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
1917                 bio = xbh;
1918         }
1919
1920 }
1921 /* Assumes that CCISS_LOCK(h->ctlr) is held. */
1922 /* Zeros out the error record and then resends the command back */
1923 /* to the controller */
1924 static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
1925 {
1926         /* erase the old error information */
1927         memset(c->err_info, 0, sizeof(ErrorInfo_struct));
1928
1929         /* add it to software queue and then send it to the controller */
1930         addQ(&(h->reqQ),c);
1931         h->Qdepth++;
1932         if(h->Qdepth > h->maxQsinceinit)
1933                 h->maxQsinceinit = h->Qdepth;
1934
1935         start_io(h);
1936 }
1937 /* checks the status of the job and calls complete buffers to mark all
1938  * buffers for the completed job.
1939  */
1940 static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
1941                 int timeout)
1942 {
1943         int status = 1;
1944         int i;
1945         int retry_cmd = 0;
1946         u64bit temp64;
1947
1948         if (timeout)
1949                 status = 0;
1950
1951         if(cmd->err_info->CommandStatus != 0)
1952         { /* an error has occurred */
1953                 switch(cmd->err_info->CommandStatus)
1954                 {
1955                         unsigned char sense_key;
1956                         case CMD_TARGET_STATUS:
1957                                 status = 0;
1958
1959                                 if( cmd->err_info->ScsiStatus == 0x02)
1960                                 {
1961                                         printk(KERN_WARNING "cciss: cmd %p "
1962                                                 "has CHECK CONDITION "
1963                                                 " byte 2 = 0x%x\n", cmd,
1964                                                 cmd->err_info->SenseInfo[2]
1965                                         );
1966                                         /* check the sense key */
1967                                         sense_key = 0xf &
1968                                                 cmd->err_info->SenseInfo[2];
1969                                         /* no status or recovered error */
1970                                         if((sense_key == 0x0) ||
1971                                             (sense_key == 0x1))
1972                                         {
1973                                                         status = 1;
1974                                         }
1975                                 } else
1976                                 {
1977                                         printk(KERN_WARNING "cciss: cmd %p "
1978                                                 "has SCSI Status 0x%x\n",
1979                                                 cmd, cmd->err_info->ScsiStatus);
1980                                 }
1981                         break;
1982                         case CMD_DATA_UNDERRUN:
1983                                 printk(KERN_WARNING "cciss: cmd %p has"
1984                                         " completed with data underrun "
1985                                         "reported\n", cmd);
1986                         break;
1987                         case CMD_DATA_OVERRUN:
1988                                 printk(KERN_WARNING "cciss: cmd %p has"
1989                                         " completed with data overrun "
1990                                         "reported\n", cmd);
1991                         break;
1992                         case CMD_INVALID:
1993                                 printk(KERN_WARNING "cciss: cmd %p is "
1994                                         "reported invalid\n", cmd);
1995                                 status = 0;
1996                         break;
1997                         case CMD_PROTOCOL_ERR:
1998                                 printk(KERN_WARNING "cciss: cmd %p has "
1999                                         "protocol error \n", cmd);
2000                                 status = 0;
2001                         break;
2002                         case CMD_HARDWARE_ERR:
2003                                 printk(KERN_WARNING "cciss: cmd %p had "
2004                                         " hardware error\n", cmd);
2005                                 status = 0;
2006                         break;
2007                         case CMD_CONNECTION_LOST:
2008                                 printk(KERN_WARNING "cciss: cmd %p had "
2009                                         "connection lost\n", cmd);
2010                                 status=0;
2011                         break;
2012                         case CMD_ABORTED:
2013                                 printk(KERN_WARNING "cciss: cmd %p was "
2014                                         "aborted\n", cmd);
2015                                 status=0;
2016                         break;
2017                         case CMD_ABORT_FAILED:
2018                                 printk(KERN_WARNING "cciss: cmd %p reports "
2019                                         "abort failed\n", cmd);
2020                                 status=0;
2021                         break;
2022                         case CMD_UNSOLICITED_ABORT:
2023                                 printk(KERN_WARNING "cciss%d: unsolicited "
2024                                         "abort %p\n", h->ctlr, cmd);
2025                                 if (cmd->retry_count < MAX_CMD_RETRIES) {
2026                                         retry_cmd=1;
2027                                         printk(KERN_WARNING
2028                                                 "cciss%d: retrying %p\n",
2029                                                 h->ctlr, cmd);
2030                                         cmd->retry_count++;
2031                                 } else
2032                                         printk(KERN_WARNING
2033                                                 "cciss%d: %p retried too "
2034                                                 "many times\n", h->ctlr, cmd);
2035                                 status=0;
2036                         break;
2037                         case CMD_TIMEOUT:
2038                                 printk(KERN_WARNING "cciss: cmd %p timedout\n",
2039                                         cmd);
2040                                 status=0;
2041                         break;
2042                         default:
2043                                 printk(KERN_WARNING "cciss: cmd %p returned "
2044                                         "unknown status %x\n", cmd,
2045                                                 cmd->err_info->CommandStatus);
2046                                 status=0;
2047                 }
2048         }
2049         /* We need to return this command */
2050         if(retry_cmd) {
2051                 resend_cciss_cmd(h,cmd);
2052                 return;
2053         }
2054         /* command did not need to be retried */
2055         /* unmap the DMA mapping for all the scatter gather elements */
2056         for(i=0; i<cmd->Header.SGList; i++) {
2057                 temp64.val32.lower = cmd->SG[i].Addr.lower;
2058                 temp64.val32.upper = cmd->SG[i].Addr.upper;
2059                 pci_unmap_page(hba[cmd->ctlr]->pdev,
2060                         temp64.val, cmd->SG[i].Len,
2061                         (cmd->Request.Type.Direction == XFER_READ) ?
2062                                 PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
2063         }
2064         complete_buffers(cmd->rq->bio, status);
2065
2066 #ifdef CCISS_DEBUG
2067         printk("Done with %p\n", cmd->rq);
2068 #endif /* CCISS_DEBUG */
2069
2070         end_that_request_last(cmd->rq);
2071         cmd_free(h,cmd,1);
2072 }
2073
2074 /*
2075  * Get a request and submit it to the controller.
2076  */
2077 static void do_cciss_request(request_queue_t *q)
2078 {
2079         ctlr_info_t *h= q->queuedata;
2080         CommandList_struct *c;
2081         int start_blk, seg;
2082         struct request *creq;
2083         u64bit temp64;
2084         struct scatterlist tmp_sg[MAXSGENTRIES];
2085         drive_info_struct *drv;
2086         int i, dir;
2087
2088         /* We call start_io here in case there is a command waiting on the
2089          * queue that has not been sent.
2090         */
2091         if (blk_queue_plugged(q))
2092                 goto startio;
2093
2094 queue:
2095         creq = elv_next_request(q);
2096         if (!creq)
2097                 goto startio;
2098
2099         if (creq->nr_phys_segments > MAXSGENTRIES)
2100                 BUG();
2101
2102         if (( c = cmd_alloc(h, 1)) == NULL)
2103                 goto full;
2104
2105         blkdev_dequeue_request(creq);
2106
2107         spin_unlock_irq(q->queue_lock);
2108
2109         c->cmd_type = CMD_RWREQ;
2110         c->rq = creq;
2111
2112         /* fill in the request */
2113         drv = creq->rq_disk->private_data;
2114         c->Header.ReplyQueue = 0;  // unused in simple mode
2115         c->Header.Tag.lower = c->busaddr;  // use the physical address the cmd block for tag
2116         c->Header.LUN.LogDev.VolId= drv->LunID;
2117         c->Header.LUN.LogDev.Mode = 1;
2118         c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
2119         c->Request.Type.Type =  TYPE_CMD; // It is a command.
2120         c->Request.Type.Attribute = ATTR_SIMPLE;
2121         c->Request.Type.Direction =
2122                 (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
2123         c->Request.Timeout = 0; // Don't time out
2124         c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
2125         start_blk = creq->sector;
2126 #ifdef CCISS_DEBUG
2127         printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
2128                 (int) creq->nr_sectors);
2129 #endif /* CCISS_DEBUG */
2130
2131         seg = blk_rq_map_sg(q, creq, tmp_sg);
2132
2133         /* get the DMA records for the setup */
2134         if (c->Request.Type.Direction == XFER_READ)
2135                 dir = PCI_DMA_FROMDEVICE;
2136         else
2137                 dir = PCI_DMA_TODEVICE;
2138
2139         for (i=0; i<seg; i++)
2140         {
2141                 c->SG[i].Len = tmp_sg[i].length;
2142                 temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
2143                                           tmp_sg[i].offset, tmp_sg[i].length,
2144                                           dir);
2145                 c->SG[i].Addr.lower = temp64.val32.lower;
2146                 c->SG[i].Addr.upper = temp64.val32.upper;
2147                 c->SG[i].Ext = 0;  // we are not chaining
2148         }
2149         /* track how many SG entries we are using */
2150         if( seg > h->maxSG)
2151                 h->maxSG = seg;
2152
2153 #ifdef CCISS_DEBUG
2154         printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
2155 #endif /* CCISS_DEBUG */
2156
2157         c->Header.SGList = c->Header.SGTotal = seg;
2158         c->Request.CDB[1]= 0;
2159         c->Request.CDB[2]= (start_blk >> 24) & 0xff;    //MSB
2160         c->Request.CDB[3]= (start_blk >> 16) & 0xff;
2161         c->Request.CDB[4]= (start_blk >>  8) & 0xff;
2162         c->Request.CDB[5]= start_blk & 0xff;
2163         c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
2164         c->Request.CDB[7]= (creq->nr_sectors >>  8) & 0xff;
2165         c->Request.CDB[8]= creq->nr_sectors & 0xff;
2166         c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
2167
2168         spin_lock_irq(q->queue_lock);
2169
2170         addQ(&(h->reqQ),c);
2171         h->Qdepth++;
2172         if(h->Qdepth > h->maxQsinceinit)
2173                 h->maxQsinceinit = h->Qdepth;
2174
2175         goto queue;
2176 full:
2177         blk_stop_queue(q);
2178 startio:
2179         /* We will already have the driver lock here so not need
2180          * to lock it.
2181         */
2182         start_io(h);
2183 }
2184
2185 static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
2186 {
2187         ctlr_info_t *h = dev_id;
2188         CommandList_struct *c;
2189         unsigned long flags;
2190         __u32 a, a1;
2191         int j;
2192         int start_queue = h->next_to_run;
2193
2194         /* Is this interrupt for us? */
2195         if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
2196                 return IRQ_NONE;
2197
2198         /*
2199          * If there are completed commands in the completion queue,
2200          * we had better do something about it.
2201          */
2202         spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
2203         while( h->access.intr_pending(h))
2204         {
2205                 while((a = h->access.command_completed(h)) != FIFO_EMPTY)
2206                 {
2207                         a1 = a;
2208                         a &= ~3;
2209                         if ((c = h->cmpQ) == NULL)
2210                         {
2211                                 printk(KERN_WARNING "cciss: Completion of %08lx ignored\n", (unsigned long)a1);
2212                                 continue;
2213                         }
2214                         while(c->busaddr != a) {
2215                                 c = c->next;
2216                                 if (c == h->cmpQ)
2217                                         break;
2218                         }
2219                         /*
2220                          * If we've found the command, take it off the
2221                          * completion Q and free it
2222                          */
2223                          if (c->busaddr == a) {
2224                                 removeQ(&h->cmpQ, c);
2225                                 if (c->cmd_type == CMD_RWREQ) {
2226                                         complete_command(h, c, 0);
2227                                 } else if (c->cmd_type == CMD_IOCTL_PEND) {
2228                                         complete(c->waiting);
2229                                 }
2230 #                               ifdef CONFIG_CISS_SCSI_TAPE
2231                                 else if (c->cmd_type == CMD_SCSI)
2232                                         complete_scsi_command(c, 0, a1);
2233 #                               endif
2234                                 continue;
2235                         }
2236                 }
2237         }
2238
2239         /* check to see if we have maxed out the number of commands that can
2240          * be placed on the queue.  If so then exit.  We do this check here
2241          * in case the interrupt we serviced was from an ioctl and did not
2242          * free any new commands.
2243          */
2244         if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2245                 goto cleanup;
2246
2247         /* We have room on the queue for more commands.  Now we need to queue
2248          * them up.  We will also keep track of the next queue to run so
2249          * that every queue gets a chance to be started first.
2250         */
2251         for (j=0; j < h->highest_lun + 1; j++){
2252                 int curr_queue = (start_queue + j) % (h->highest_lun + 1);
2253                 /* make sure the disk has been added and the drive is real
2254                  * because this can be called from the middle of init_one.
2255                 */
2256                 if(!(h->drv[curr_queue].queue) ||
2257                                    !(h->drv[curr_queue].heads))
2258                         continue;
2259                 blk_start_queue(h->gendisk[curr_queue]->queue);
2260
2261                 /* check to see if we have maxed out the number of commands
2262                  * that can be placed on the queue.
2263                 */
2264                 if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
2265                 {
2266                         if (curr_queue == start_queue){
2267                                 h->next_to_run = (start_queue + 1) % (h->highest_lun + 1);
2268                                 goto cleanup;
2269                         } else {
2270                                 h->next_to_run = curr_queue;
2271                                 goto cleanup;
2272         }
2273                 } else {
2274                         curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
2275                 }
2276         }
2277
2278 cleanup:
2279         spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
2280         return IRQ_HANDLED;
2281 }
2282 /*
2283  *  We cannot read the structure directly, for portablity we must use
2284  *   the io functions.
2285  *   This is for debug only.
2286  */
2287 #ifdef CCISS_DEBUG
2288 static void print_cfg_table( CfgTable_struct *tb)
2289 {
2290         int i;
2291         char temp_name[17];
2292
2293         printk("Controller Configuration information\n");
2294         printk("------------------------------------\n");
2295         for(i=0;i<4;i++)
2296                 temp_name[i] = readb(&(tb->Signature[i]));
2297         temp_name[4]='\0';
2298         printk("   Signature = %s\n", temp_name);
2299         printk("   Spec Number = %d\n", readl(&(tb->SpecValence)));
2300         printk("   Transport methods supported = 0x%x\n",
2301                                 readl(&(tb-> TransportSupport)));
2302         printk("   Transport methods active = 0x%x\n",
2303                                 readl(&(tb->TransportActive)));
2304         printk("   Requested transport Method = 0x%x\n",
2305                         readl(&(tb->HostWrite.TransportRequest)));
2306         printk("   Coalese Interrupt Delay = 0x%x\n",
2307                         readl(&(tb->HostWrite.CoalIntDelay)));
2308         printk("   Coalese Interrupt Count = 0x%x\n",
2309                         readl(&(tb->HostWrite.CoalIntCount)));
2310         printk("   Max outstanding commands = 0x%d\n",
2311                         readl(&(tb->CmdsOutMax)));
2312         printk("   Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
2313         for(i=0;i<16;i++)
2314                 temp_name[i] = readb(&(tb->ServerName[i]));
2315         temp_name[16] = '\0';
2316         printk("   Server Name = %s\n", temp_name);
2317         printk("   Heartbeat Counter = 0x%x\n\n\n",
2318                         readl(&(tb->HeartBeat)));
2319 }
2320 #endif /* CCISS_DEBUG */
2321
2322 static void release_io_mem(ctlr_info_t *c)
2323 {
2324         /* if IO mem was not protected do nothing */
2325         if( c->io_mem_addr == 0)
2326                 return;
2327         release_region(c->io_mem_addr, c->io_mem_length);
2328         c->io_mem_addr = 0;
2329         c->io_mem_length = 0;
2330 }
2331
2332 static int find_PCI_BAR_index(struct pci_dev *pdev,
2333                                 unsigned long pci_bar_addr)
2334 {
2335         int i, offset, mem_type, bar_type;
2336         if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
2337                 return 0;
2338         offset = 0;
2339         for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
2340                 bar_type = pci_resource_flags(pdev, i) &
2341                         PCI_BASE_ADDRESS_SPACE;
2342                 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
2343                         offset += 4;
2344                 else {
2345                         mem_type = pci_resource_flags(pdev, i) &
2346                                 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
2347                         switch (mem_type) {
2348                                 case PCI_BASE_ADDRESS_MEM_TYPE_32:
2349                                 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
2350                                         offset += 4; /* 32 bit */
2351                                         break;
2352                                 case PCI_BASE_ADDRESS_MEM_TYPE_64:
2353                                         offset += 8;
2354                                         break;
2355                                 default: /* reserved in PCI 2.2 */
2356                                         printk(KERN_WARNING "Base address is invalid\n");
2357                                         return -1;
2358                                 break;
2359                         }
2360                 }
2361                 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
2362                         return i+1;
2363         }
2364         return -1;
2365 }
2366
2367 static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
2368 {
2369         ushort subsystem_vendor_id, subsystem_device_id, command;
2370         __u32 board_id, scratchpad = 0;
2371         __u64 cfg_offset;
2372         __u32 cfg_base_addr;
2373         __u64 cfg_base_addr_index;
2374         int i;
2375
2376         /* check to see if controller has been disabled */
2377         /* BEFORE trying to enable it */
2378         (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
2379         if(!(command & 0x02))
2380         {
2381                 printk(KERN_WARNING "cciss: controller appears to be disabled\n");
2382                 return(-1);
2383         }
2384
2385         if (pci_enable_device(pdev))
2386         {
2387                 printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
2388                 return( -1);
2389         }
2390
2391         subsystem_vendor_id = pdev->subsystem_vendor;
2392         subsystem_device_id = pdev->subsystem_device;
2393         board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
2394                                         subsystem_vendor_id);
2395
2396         /* search for our IO range so we can protect it */
2397         for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
2398         {
2399                 /* is this an IO range */
2400                 if( pci_resource_flags(pdev, i) & 0x01 ) {
2401                         c->io_mem_addr = pci_resource_start(pdev, i);
2402                         c->io_mem_length = pci_resource_end(pdev, i) -
2403                                 pci_resource_start(pdev, i) +1;
2404 #ifdef CCISS_DEBUG
2405                         printk("IO value found base_addr[%d] %lx %lx\n", i,
2406                                 c->io_mem_addr, c->io_mem_length);
2407 #endif /* CCISS_DEBUG */
2408                         /* register the IO range */
2409                         if(!request_region( c->io_mem_addr,
2410                                         c->io_mem_length, "cciss"))
2411                         {
2412                                 printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
2413                                 c->io_mem_addr, c->io_mem_length);
2414                                 c->io_mem_addr= 0;
2415                                 c->io_mem_length = 0;
2416                         }
2417                         break;
2418                 }
2419         }
2420
2421 #ifdef CCISS_DEBUG
2422         printk("command = %x\n", command);
2423         printk("irq = %x\n", pdev->irq);
2424         printk("board_id = %x\n", board_id);
2425 #endif /* CCISS_DEBUG */
2426
2427         c->intr = pdev->irq;
2428
2429         /*
2430          * Memory base addr is first addr , the second points to the config
2431          *   table
2432          */
2433
2434         c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
2435 #ifdef CCISS_DEBUG
2436         printk("address 0 = %x\n", c->paddr);
2437 #endif /* CCISS_DEBUG */
2438         c->vaddr = remap_pci_mem(c->paddr, 200);
2439
2440         /* Wait for the board to become ready.  (PCI hotplug needs this.)
2441          * We poll for up to 120 secs, once per 100ms. */
2442         for (i=0; i < 1200; i++) {
2443                 scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
2444                 if (scratchpad == CCISS_FIRMWARE_READY)
2445                         break;
2446                 set_current_state(TASK_INTERRUPTIBLE);
2447                 schedule_timeout(HZ / 10); /* wait 100ms */
2448         }
2449         if (scratchpad != CCISS_FIRMWARE_READY) {
2450                 printk(KERN_WARNING "cciss: Board not ready.  Timed out.\n");
2451                 return -1;
2452         }
2453
2454         /* get the address index number */
2455         cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
2456         cfg_base_addr &= (__u32) 0x0000ffff;
2457 #ifdef CCISS_DEBUG
2458         printk("cfg base address = %x\n", cfg_base_addr);
2459 #endif /* CCISS_DEBUG */
2460         cfg_base_addr_index =
2461                 find_PCI_BAR_index(pdev, cfg_base_addr);
2462 #ifdef CCISS_DEBUG
2463         printk("cfg base address index = %x\n", cfg_base_addr_index);
2464 #endif /* CCISS_DEBUG */
2465         if (cfg_base_addr_index == -1) {
2466                 printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
2467                 release_io_mem(c);
2468                 return -1;
2469         }
2470
2471         cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
2472 #ifdef CCISS_DEBUG
2473         printk("cfg offset = %x\n", cfg_offset);
2474 #endif /* CCISS_DEBUG */
2475         c->cfgtable =  remap_pci_mem(pci_resource_start(pdev,
2476                                 cfg_base_addr_index) + cfg_offset,
2477                                 sizeof(CfgTable_struct));
2478         c->board_id = board_id;
2479
2480 #ifdef CCISS_DEBUG
2481         print_cfg_table(c->cfgtable);
2482 #endif /* CCISS_DEBUG */
2483
2484         for(i=0; i<NR_PRODUCTS; i++) {
2485                 if (board_id == products[i].board_id) {
2486                         c->product_name = products[i].product_name;
2487                         c->access = *(products[i].access);
2488                         break;
2489                 }
2490         }
2491         if (i == NR_PRODUCTS) {
2492                 printk(KERN_WARNING "cciss: Sorry, I don't know how"
2493                         " to access the Smart Array controller %08lx\n",
2494                                 (unsigned long)board_id);
2495                 return -1;
2496         }
2497         if (  (readb(&c->cfgtable->Signature[0]) != 'C') ||
2498               (readb(&c->cfgtable->Signature[1]) != 'I') ||
2499               (readb(&c->cfgtable->Signature[2]) != 'S') ||
2500               (readb(&c->cfgtable->Signature[3]) != 'S') )
2501         {
2502                 printk("Does not appear to be a valid CISS config table\n");
2503                 return -1;
2504         }
2505
2506 #ifdef CONFIG_X86
2507 {
2508         /* Need to enable prefetch in the SCSI core for 6400 in x86 */
2509         __u32 prefetch;
2510         prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
2511         prefetch |= 0x100;
2512         writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
2513 }
2514 #endif
2515
2516 #ifdef CCISS_DEBUG
2517         printk("Trying to put board into Simple mode\n");
2518 #endif /* CCISS_DEBUG */
2519         c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
2520         /* Update the field, and then ring the doorbell */
2521         writel( CFGTBL_Trans_Simple,
2522                 &(c->cfgtable->HostWrite.TransportRequest));
2523         writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
2524
2525         /* under certain very rare conditions, this can take awhile.
2526          * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
2527          * as we enter this code.) */
2528         for(i=0;i<MAX_CONFIG_WAIT;i++) {
2529                 if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
2530                         break;
2531                 /* delay and try again */
2532                 set_current_state(TASK_INTERRUPTIBLE);
2533                 schedule_timeout(10);
2534         }
2535
2536 #ifdef CCISS_DEBUG
2537         printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
2538 #endif /* CCISS_DEBUG */
2539 #ifdef CCISS_DEBUG
2540         print_cfg_table(c->cfgtable);
2541 #endif /* CCISS_DEBUG */
2542
2543         if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
2544         {
2545                 printk(KERN_WARNING "cciss: unable to get board into"
2546                                         " simple mode\n");
2547                 return -1;
2548         }
2549         return 0;
2550
2551 }
2552
2553 /*
2554  * Gets information about the local volumes attached to the controller.
2555  */
2556 static void cciss_getgeometry(int cntl_num)
2557 {
2558         ReportLunData_struct *ld_buff;
2559         ReadCapdata_struct *size_buff;
2560         InquiryData_struct *inq_buff;
2561         int return_code;
2562         int i;
2563         int listlength = 0;
2564         __u32 lunid = 0;
2565         int block_size;
2566         int total_size;
2567
2568         ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
2569         if (ld_buff == NULL)
2570         {
2571                 printk(KERN_ERR "cciss: out of memory\n");
2572                 return;
2573         }
2574         memset(ld_buff, 0, sizeof(ReportLunData_struct));
2575         size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
2576         if (size_buff == NULL)
2577         {
2578                 printk(KERN_ERR "cciss: out of memory\n");
2579                 kfree(ld_buff);
2580                 return;
2581         }
2582         inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
2583         if (inq_buff == NULL)
2584         {
2585                 printk(KERN_ERR "cciss: out of memory\n");
2586                 kfree(ld_buff);
2587                 kfree(size_buff);
2588                 return;
2589         }
2590         /* Get the firmware version */
2591         return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
2592                 sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
2593         if (return_code == IO_OK)
2594         {
2595                 hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
2596                 hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
2597                 hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
2598                 hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
2599         } else /* send command failed */
2600         {
2601                 printk(KERN_WARNING "cciss: unable to determine firmware"
2602                         " version of controller\n");
2603         }
2604         /* Get the number of logical volumes */
2605         return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
2606                         sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
2607
2608         if( return_code == IO_OK)
2609         {
2610 #ifdef CCISS_DEBUG
2611                 printk("LUN Data\n--------------------------\n");
2612 #endif /* CCISS_DEBUG */
2613
2614                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
2615                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
2616                 listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
2617                 listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
2618         } else /* reading number of logical volumes failed */
2619         {
2620                 printk(KERN_WARNING "cciss: report logical volume"
2621                         " command failed\n");
2622                 listlength = 0;
2623         }
2624         hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
2625         if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
2626         {
2627                 printk(KERN_ERR "ciss:  only %d number of logical volumes supported\n",
2628                         CISS_MAX_LUN);
2629                 hba[cntl_num]->num_luns = CISS_MAX_LUN;
2630         }
2631 #ifdef CCISS_DEBUG
2632         printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
2633                 ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
2634                 ld_buff->LUNListLength[3],  hba[cntl_num]->num_luns);
2635 #endif /* CCISS_DEBUG */
2636
2637         hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
2638         for(i=0; i<  hba[cntl_num]->num_luns; i++)
2639         {
2640
2641                 lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
2642                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
2643                 lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
2644                 lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
2645
2646                 hba[cntl_num]->drv[i].LunID = lunid;
2647
2648
2649 #ifdef CCISS_DEBUG
2650                 printk(KERN_DEBUG "LUN[%d]:  %x %x %x %x = %x\n", i,
2651                 ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2],
2652                 ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID);
2653 #endif /* CCISS_DEBUG */
2654                 cciss_read_capacity(cntl_num, i, size_buff, 0,
2655                         &total_size, &block_size);
2656                 cciss_geometry_inquiry(cntl_num, i, 0, total_size, block_size,
2657                         inq_buff, &hba[cntl_num]->drv[i]);
2658         }
2659         kfree(ld_buff);
2660         kfree(size_buff);
2661         kfree(inq_buff);
2662 }
2663
2664 /* Function to find the first free pointer into our hba[] array */
2665 /* Returns -1 if no free entries are left.  */
2666 static int alloc_cciss_hba(void)
2667 {
2668         struct gendisk *disk[NWD];
2669         int i, n;
2670         for (n = 0; n < NWD; n++) {
2671                 disk[n] = alloc_disk(1 << NWD_SHIFT);
2672                 if (!disk[n])
2673                         goto out;
2674         }
2675
2676         for(i=0; i< MAX_CTLR; i++) {
2677                 if (!hba[i]) {
2678                         ctlr_info_t *p;
2679                         p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
2680                         if (!p)
2681                                 goto Enomem;
2682                         memset(p, 0, sizeof(ctlr_info_t));
2683                         for (n = 0; n < NWD; n++)
2684                                 p->gendisk[n] = disk[n];
2685                         hba[i] = p;
2686                         return i;
2687                 }
2688         }
2689         printk(KERN_WARNING "cciss: This driver supports a maximum"
2690                 " of %d controllers.\n", MAX_CTLR);
2691         goto out;
2692 Enomem:
2693         printk(KERN_ERR "cciss: out of memory.\n");
2694 out:
2695         while (n--)
2696                 put_disk(disk[n]);
2697         return -1;
2698 }
2699
2700 static void free_hba(int i)
2701 {
2702         ctlr_info_t *p = hba[i];
2703         int n;
2704
2705         hba[i] = NULL;
2706         for (n = 0; n < NWD; n++)
2707                 put_disk(p->gendisk[n]);
2708         kfree(p);
2709 }
2710
2711 /*
2712  *  This is it.  Find all the controllers and register them.  I really hate
2713  *  stealing all these major device numbers.
2714  *  returns the number of block devices registered.
2715  */
2716 static int __devinit cciss_init_one(struct pci_dev *pdev,
2717         const struct pci_device_id *ent)
2718 {
2719         request_queue_t *q;
2720         int i;
2721         int j;
2722         int rc;
2723
2724         printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
2725                         " bus %d dev %d func %d\n",
2726                 pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
2727                         PCI_FUNC(pdev->devfn));
2728         i = alloc_cciss_hba();
2729         if(i < 0)
2730                 return (-1);
2731         if (cciss_pci_init(hba[i], pdev) != 0)
2732                 goto clean1;
2733
2734         sprintf(hba[i]->devname, "cciss%d", i);
2735         hba[i]->ctlr = i;
2736         hba[i]->pdev = pdev;
2737
2738         /* configure PCI DMA stuff */
2739         if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
2740                 printk("cciss: using DAC cycles\n");
2741         else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2742                 printk("cciss: not using DAC cycles\n");
2743         else {
2744                 printk("cciss: no suitable DMA available\n");
2745                 goto clean1;
2746         }
2747
2748         /*
2749          * register with the major number, or get a dynamic major number
2750          * by passing 0 as argument.  This is done for greater than
2751          * 8 controller support.
2752          */
2753         if (i < MAX_CTLR_ORIG)
2754                 hba[i]->major = MAJOR_NR + i;
2755         rc = register_blkdev(hba[i]->major, hba[i]->devname);
2756         if(rc == -EBUSY || rc == -EINVAL) {
2757                 printk(KERN_ERR
2758                         "cciss:  Unable to get major number %d for %s "
2759                         "on hba %d\n", hba[i]->major, hba[i]->devname, i);
2760                 goto clean1;
2761         }
2762         else {
2763                 if (i >= MAX_CTLR_ORIG)
2764                         hba[i]->major = rc;
2765         }
2766
2767         /* make sure the board interrupts are off */
2768         hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
2769         if( request_irq(hba[i]->intr, do_cciss_intr,
2770                 SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
2771                         hba[i]->devname, hba[i])) {
2772                 printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
2773                         hba[i]->intr, hba[i]->devname);
2774                 goto clean2;
2775         }
2776         hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
2777         hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
2778                 hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2779                 &(hba[i]->cmd_pool_dhandle));
2780         hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
2781                 hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2782                 &(hba[i]->errinfo_pool_dhandle));
2783         if((hba[i]->cmd_pool_bits == NULL)
2784                 || (hba[i]->cmd_pool == NULL)
2785                 || (hba[i]->errinfo_pool == NULL)) {
2786                 printk( KERN_ERR "cciss: out of memory");
2787                 goto clean4;
2788         }
2789
2790         spin_lock_init(&hba[i]->lock);
2791
2792         /* Initialize the pdev driver private data.
2793                 have it point to hba[i].  */
2794         pci_set_drvdata(pdev, hba[i]);
2795         /* command and error info recs zeroed out before
2796                         they are used */
2797         memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
2798
2799 #ifdef CCISS_DEBUG
2800         printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
2801 #endif /* CCISS_DEBUG */
2802
2803         cciss_getgeometry(i);
2804
2805         cciss_scsi_setup(i);
2806
2807         /* Turn the interrupts on so we can service requests */
2808         hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
2809
2810         cciss_procinit(i);
2811
2812         for(j=0; j < NWD; j++) { /* mfm */
2813                 drive_info_struct *drv = &(hba[i]->drv[j]);
2814                 struct gendisk *disk = hba[i]->gendisk[j];
2815
2816                 q = blk_init_queue(do_cciss_request, &hba[i]->lock);
2817                 if (!q) {
2818                         printk(KERN_ERR
2819                            "cciss:  unable to allocate queue for disk %d\n",
2820                            j);
2821                         break;
2822                 }
2823                 drv->queue = q;
2824
2825                 q->backing_dev_info.ra_pages = READ_AHEAD;
2826         blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
2827
2828         /* This is a hardware imposed limit. */
2829         blk_queue_max_hw_segments(q, MAXSGENTRIES);
2830
2831         /* This is a limit in the driver and could be eliminated. */
2832         blk_queue_max_phys_segments(q, MAXSGENTRIES);
2833
2834         blk_queue_max_sectors(q, 512);
2835
2836                 q->queuedata = hba[i];
2837                 sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
2838                 sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
2839                 disk->major = hba[i]->major;
2840                 disk->first_minor = j << NWD_SHIFT;
2841                 disk->fops = &cciss_fops;
2842                 disk->queue = q;
2843                 disk->private_data = drv;
2844                 /* we must register the controller even if no disks exist */
2845                 /* this is for the online array utilities */
2846                 if(!drv->heads && j)
2847                         continue;
2848                 blk_queue_hardsect_size(q, drv->block_size);
2849                 set_capacity(disk, drv->nr_blocks);
2850                 add_disk(disk);
2851         }
2852
2853         return(1);
2854
2855 clean4:
2856         if(hba[i]->cmd_pool_bits)
2857                 kfree(hba[i]->cmd_pool_bits);
2858         if(hba[i]->cmd_pool)
2859                 pci_free_consistent(hba[i]->pdev,
2860                         NR_CMDS * sizeof(CommandList_struct),
2861                         hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2862         if(hba[i]->errinfo_pool)
2863                 pci_free_consistent(hba[i]->pdev,
2864                         NR_CMDS * sizeof( ErrorInfo_struct),
2865                         hba[i]->errinfo_pool,
2866                         hba[i]->errinfo_pool_dhandle);
2867         free_irq(hba[i]->intr, hba[i]);
2868 clean2:
2869         unregister_blkdev(hba[i]->major, hba[i]->devname);
2870 clean1:
2871         release_io_mem(hba[i]);
2872         free_hba(i);
2873         return(-1);
2874 }
2875
2876 static void __devexit cciss_remove_one (struct pci_dev *pdev)
2877 {
2878         ctlr_info_t *tmp_ptr;
2879         int i, j;
2880         char flush_buf[4];
2881         int return_code;
2882
2883         if (pci_get_drvdata(pdev) == NULL)
2884         {
2885                 printk( KERN_ERR "cciss: Unable to remove device \n");
2886                 return;
2887         }
2888         tmp_ptr = pci_get_drvdata(pdev);
2889         i = tmp_ptr->ctlr;
2890         if (hba[i] == NULL)
2891         {
2892                 printk(KERN_ERR "cciss: device appears to "
2893                         "already be removed \n");
2894                 return;
2895         }
2896         /* Turn board interrupts off  and send the flush cache command */
2897         /* sendcmd will turn off interrupt, and send the flush...
2898         * To write all data in the battery backed cache to disks */
2899         memset(flush_buf, 0, 4);
2900         return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
2901                                 TYPE_CMD);
2902         if(return_code != IO_OK)
2903         {
2904                 printk(KERN_WARNING "Error Flushing cache on controller %d\n",
2905                         i);
2906         }
2907         free_irq(hba[i]->intr, hba[i]);
2908         pci_set_drvdata(pdev, NULL);
2909         iounmap(hba[i]->vaddr);
2910         cciss_unregister_scsi(i);  /* unhook from SCSI subsystem */
2911         unregister_blkdev(hba[i]->major, hba[i]->devname);
2912         remove_proc_entry(hba[i]->devname, proc_cciss);
2913
2914         /* remove it from the disk list */
2915         for (j = 0; j < NWD; j++) {
2916                 struct gendisk *disk = hba[i]->gendisk[j];
2917                 if (disk->flags & GENHD_FL_UP)
2918                         blk_cleanup_queue(disk->queue);
2919                         del_gendisk(disk);
2920         }
2921
2922         pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
2923                             hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
2924         pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
2925                 hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
2926         kfree(hba[i]->cmd_pool_bits);
2927         release_io_mem(hba[i]);
2928         free_hba(i);
2929 }
2930
2931 static struct pci_driver cciss_pci_driver = {
2932         .name =         "cciss",
2933         .probe =        cciss_init_one,
2934         .remove =       __devexit_p(cciss_remove_one),
2935         .id_table =     cciss_pci_device_id, /* id_table */
2936 };
2937
2938 /*
2939  *  This is it.  Register the PCI driver information for the cards we control
2940  *  the OS will call our registered routines when it finds one of our cards.
2941  */
2942 static int __init cciss_init(void)
2943 {
2944         printk(KERN_INFO DRIVER_NAME "\n");
2945
2946         /* Register for our PCI devices */
2947         return pci_module_init(&cciss_pci_driver);
2948 }
2949
2950 static void __exit cciss_cleanup(void)
2951 {
2952         int i;
2953
2954         pci_unregister_driver(&cciss_pci_driver);
2955         /* double check that all controller entrys have been removed */
2956         for (i=0; i< MAX_CTLR; i++)
2957         {
2958                 if (hba[i] != NULL)
2959                 {
2960                         printk(KERN_WARNING "cciss: had to remove"
2961                                         " controller %d\n", i);
2962                         cciss_remove_one(hba[i]->pdev);
2963                 }
2964         }
2965         remove_proc_entry("cciss", proc_root_driver);
2966 }
2967
2968 module_init(cciss_init);
2969 module_exit(cciss_cleanup);