drivers/ide/ide-lib.c

   1 #include <linux/module.h>
   2 #include <linux/types.h>
   3 #include <linux/string.h>
   4 #include <linux/kernel.h>
   5 #include <linux/timer.h>
   6 #include <linux/mm.h>
   7 #include <linux/interrupt.h>
   8 #include <linux/major.h>
   9 #include <linux/errno.h>
  10 #include <linux/genhd.h>
  11 #include <linux/blkpg.h>
  12 #include <linux/slab.h>
  13 #include <linux/pci.h>
  14 #include <linux/delay.h>
  15 #include <linux/hdreg.h>
  16 #include <linux/ide.h>
  17 #include <linux/bitops.h>
  18
  19 #include <asm/byteorder.h>
  20 #include <asm/irq.h>
  21 #include <asm/uaccess.h>
  22 #include <asm/io.h>
  23
  24 /*
  25  *      IDE library routines. These are plug in code that most
  26  *      drivers can use but occasionally may be weird enough
  27  *      to want to do their own thing with
  28  *
  29  *      Add common non I/O op stuff here. Make sure it has proper
  30  *      kernel-doc function headers or your patch will be rejected
  31  */
  32
  33
  34 /**
  35  *      ide_xfer_verbose        -       return IDE mode names
  36  *      @xfer_rate: rate to name
  37  *
  38  *      Returns a constant string giving the name of the mode
  39  *      requested.
  40  */
  41
  42 char *ide_xfer_verbose (u8 xfer_rate)
  43 {
  44         switch(xfer_rate) {
  45                 case XFER_UDMA_7:       return("UDMA 7");
  46                 case XFER_UDMA_6:       return("UDMA 6");
  47                 case XFER_UDMA_5:       return("UDMA 5");
  48                 case XFER_UDMA_4:       return("UDMA 4");
  49                 case XFER_UDMA_3:       return("UDMA 3");
  50                 case XFER_UDMA_2:       return("UDMA 2");
  51                 case XFER_UDMA_1:       return("UDMA 1");
  52                 case XFER_UDMA_0:       return("UDMA 0");
  53                 case XFER_MW_DMA_2:     return("MW DMA 2");
  54                 case XFER_MW_DMA_1:     return("MW DMA 1");
  55                 case XFER_MW_DMA_0:     return("MW DMA 0");
  56                 case XFER_SW_DMA_2:     return("SW DMA 2");
  57                 case XFER_SW_DMA_1:     return("SW DMA 1");
  58                 case XFER_SW_DMA_0:     return("SW DMA 0");
  59                 case XFER_PIO_4:        return("PIO 4");
  60                 case XFER_PIO_3:        return("PIO 3");
  61                 case XFER_PIO_2:        return("PIO 2");
  62                 case XFER_PIO_1:        return("PIO 1");
  63                 case XFER_PIO_0:        return("PIO 0");
  64                 case XFER_PIO_SLOW:     return("PIO SLOW");
  65                 default:                return("XFER ERROR");
  66         }
  67 }
  68
  69 EXPORT_SYMBOL(ide_xfer_verbose);
  70
  71 /**
  72  *      ide_dma_speed   -       compute DMA speed
  73  *      @drive: drive
  74  *      @mode:  modes available
  75  *
  76  *      Checks the drive capabilities and returns the speed to use
  77  *      for the DMA transfer.  Returns 0 if the drive is incapable
  78  *      of DMA transfers.
  79  */
  80
  81 u8 ide_dma_speed(ide_drive_t *drive, u8 mode)
  82 {
  83         struct hd_driveid *id   = drive->id;
  84         ide_hwif_t *hwif        = HWIF(drive);
  85         u8 ultra_mask, mwdma_mask, swdma_mask;
  86         u8 speed = 0;
  87
  88         if (drive->media != ide_disk && hwif->atapi_dma == 0)
  89                 return 0;
  90
  91         /* Capable of UltraDMA modes? */
  92         ultra_mask = id->dma_ultra & hwif->ultra_mask;
  93
  94         if (!(id->field_valid & 4))
  95                 mode = 0;       /* fallback to MW/SW DMA if no UltraDMA */
  96
  97         switch (mode) {
  98         case 4:
  99                 if (ultra_mask & 0x40) {
 100                         speed = XFER_UDMA_6;
 101                         break;
 102                 }
 103         case 3:
 104                 if (ultra_mask & 0x20) {
 105                         speed = XFER_UDMA_5;
 106                         break;
 107                 }
 108         case 2:
 109                 if (ultra_mask & 0x10) {
 110                         speed = XFER_UDMA_4;
 111                         break;
 112                 }
 113                 if (ultra_mask & 0x08) {
 114                         speed = XFER_UDMA_3;
 115                         break;
 116                 }
 117         case 1:
 118                 if (ultra_mask & 0x04) {
 119                         speed = XFER_UDMA_2;
 120                         break;
 121                 }
 122                 if (ultra_mask & 0x02) {
 123                         speed = XFER_UDMA_1;
 124                         break;
 125                 }
 126                 if (ultra_mask & 0x01) {
 127                         speed = XFER_UDMA_0;
 128                         break;
 129                 }
 130         case 0:
 131                 mwdma_mask = id->dma_mword & hwif->mwdma_mask;
 132
 133                 if (mwdma_mask & 0x04) {
 134                         speed = XFER_MW_DMA_2;
 135                         break;
 136                 }
 137                 if (mwdma_mask & 0x02) {
 138                         speed = XFER_MW_DMA_1;
 139                         break;
 140                 }
 141                 if (mwdma_mask & 0x01) {
 142                         speed = XFER_MW_DMA_0;
 143                         break;
 144                 }
 145
 146                 swdma_mask = id->dma_1word & hwif->swdma_mask;
 147
 148                 if (swdma_mask & 0x04) {
 149                         speed = XFER_SW_DMA_2;
 150                         break;
 151                 }
 152                 if (swdma_mask & 0x02) {
 153                         speed = XFER_SW_DMA_1;
 154                         break;
 155                 }
 156                 if (swdma_mask & 0x01) {
 157                         speed = XFER_SW_DMA_0;
 158                         break;
 159                 }
 160         }
 161
 162         return speed;
 163 }
 164 EXPORT_SYMBOL(ide_dma_speed);
 165
 166
 167 /**
 168  *      ide_rate_filter         -       return best speed for mode
 169  *      @mode: modes available
 170  *      @speed: desired speed
 171  *
 172  *      Given the available DMA/UDMA mode this function returns
 173  *      the best available speed at or below the speed requested.
 174  */
 175
 176 u8 ide_rate_filter (u8 mode, u8 speed)
 177 {
 178 #ifdef CONFIG_BLK_DEV_IDEDMA
 179         static u8 speed_max[] = {
 180                 XFER_MW_DMA_2, XFER_UDMA_2, XFER_UDMA_4,
 181                 XFER_UDMA_5, XFER_UDMA_6
 182         };
 183
 184 //      printk("%s: mode 0x%02x, speed 0x%02x\n", __FUNCTION__, mode, speed);
 185
 186         /* So that we remember to update this if new modes appear */
 187         BUG_ON(mode > 4);
 188         return min(speed, speed_max[mode]);
 189 #else /* !CONFIG_BLK_DEV_IDEDMA */
 190         return min(speed, (u8)XFER_PIO_4);
 191 #endif /* CONFIG_BLK_DEV_IDEDMA */
 192 }
 193
 194 EXPORT_SYMBOL(ide_rate_filter);
 195
 196 int ide_dma_enable (ide_drive_t *drive)
 197 {
 198         ide_hwif_t *hwif        = HWIF(drive);
 199         struct hd_driveid *id   = drive->id;
 200
 201         return ((int)   ((((id->dma_ultra >> 8) & hwif->ultra_mask) ||
 202                           ((id->dma_mword >> 8) & hwif->mwdma_mask) ||
 203                           ((id->dma_1word >> 8) & hwif->swdma_mask)) ? 1 : 0));
 204 }
 205
 206 EXPORT_SYMBOL(ide_dma_enable);
 207
 208 /*
 209  * Standard (generic) timings for PIO modes, from ATA2 specification.
 210  * These timings are for access to the IDE data port register *only*.
 211  * Some drives may specify a mode, while also specifying a different
 212  * value for cycle_time (from drive identification data).
 213  */
 214 const ide_pio_timings_t ide_pio_timings[6] = {
 215         { 70,   165,    600 },  /* PIO Mode 0 */
 216         { 50,   125,    383 },  /* PIO Mode 1 */
 217         { 30,   100,    240 },  /* PIO Mode 2 */
 218         { 30,   80,     180 },  /* PIO Mode 3 with IORDY */
 219         { 25,   70,     120 },  /* PIO Mode 4 with IORDY */
 220         { 20,   50,     100 }   /* PIO Mode 5 with IORDY (nonstandard) */
 221 };
 222
 223 EXPORT_SYMBOL_GPL(ide_pio_timings);
 224
 225 /*
 226  * Shared data/functions for determining best PIO mode for an IDE drive.
 227  * Most of this stuff originally lived in cmd640.c, and changes to the
 228  * ide_pio_blacklist[] table should be made with EXTREME CAUTION to avoid
 229  * breaking the fragile cmd640.c support.
 230  */
 231
 232 /*
 233  * Black list. Some drives incorrectly report their maximal PIO mode,
 234  * at least in respect to CMD640. Here we keep info on some known drives.
 235  */
 236 static struct ide_pio_info {
 237         const char      *name;
 238         int             pio;
 239 } ide_pio_blacklist [] = {
 240 /*      { "Conner Peripherals 1275MB - CFS1275A", 4 }, */
 241         { "Conner Peripherals 540MB - CFS540A", 3 },
 242
 243         { "WDC AC2700",  3 },
 244         { "WDC AC2540",  3 },
 245         { "WDC AC2420",  3 },
 246         { "WDC AC2340",  3 },
 247         { "WDC AC2250",  0 },
 248         { "WDC AC2200",  0 },
 249         { "WDC AC21200", 4 },
 250         { "WDC AC2120",  0 },
 251         { "WDC AC2850",  3 },
 252         { "WDC AC1270",  3 },
 253         { "WDC AC1170",  1 },
 254         { "WDC AC1210",  1 },
 255         { "WDC AC280",   0 },
 256 /*      { "WDC AC21000", 4 }, */
 257         { "WDC AC31000", 3 },
 258         { "WDC AC31200", 3 },
 259 /*      { "WDC AC31600", 4 }, */
 260
 261         { "Maxtor 7131 AT", 1 },
 262         { "Maxtor 7171 AT", 1 },
 263         { "Maxtor 7213 AT", 1 },
 264         { "Maxtor 7245 AT", 1 },
 265         { "Maxtor 7345 AT", 1 },
 266         { "Maxtor 7546 AT", 3 },
 267         { "Maxtor 7540 AV", 3 },
 268
 269         { "SAMSUNG SHD-3121A", 1 },
 270         { "SAMSUNG SHD-3122A", 1 },
 271         { "SAMSUNG SHD-3172A", 1 },
 272
 273 /*      { "ST51080A", 4 },
 274  *      { "ST51270A", 4 },
 275  *      { "ST31220A", 4 },
 276  *      { "ST31640A", 4 },
 277  *      { "ST32140A", 4 },
 278  *      { "ST3780A",  4 },
 279  */
 280         { "ST5660A",  3 },
 281         { "ST3660A",  3 },
 282         { "ST3630A",  3 },
 283         { "ST3655A",  3 },
 284         { "ST3391A",  3 },
 285         { "ST3390A",  1 },
 286         { "ST3600A",  1 },
 287         { "ST3290A",  0 },
 288         { "ST3144A",  0 },
 289         { "ST3491A",  1 },      /* reports 3, should be 1 or 2 (depending on */
 290                                 /* drive) according to Seagates FIND-ATA program */
 291
 292         { "QUANTUM ELS127A", 0 },
 293         { "QUANTUM ELS170A", 0 },
 294         { "QUANTUM LPS240A", 0 },
 295         { "QUANTUM LPS210A", 3 },
 296         { "QUANTUM LPS270A", 3 },
 297         { "QUANTUM LPS365A", 3 },
 298         { "QUANTUM LPS540A", 3 },
 299         { "QUANTUM LIGHTNING 540A", 3 },
 300         { "QUANTUM LIGHTNING 730A", 3 },
 301
 302         { "QUANTUM FIREBALL_540", 3 }, /* Older Quantum Fireballs don't work */
 303         { "QUANTUM FIREBALL_640", 3 },
 304         { "QUANTUM FIREBALL_1080", 3 },
 305         { "QUANTUM FIREBALL_1280", 3 },
 306         { NULL, 0 }
 307 };
 308
 309 /**
 310  *      ide_scan_pio_blacklist  -       check for a blacklisted drive
 311  *      @model: Drive model string
 312  *
 313  *      This routine searches the ide_pio_blacklist for an entry
 314  *      matching the start/whole of the supplied model name.
 315  *
 316  *      Returns -1 if no match found.
 317  *      Otherwise returns the recommended PIO mode from ide_pio_blacklist[].
 318  */
 319
 320 static int ide_scan_pio_blacklist (char *model)
 321 {
 322         struct ide_pio_info *p;
 323
 324         for (p = ide_pio_blacklist; p->name != NULL; p++) {
 325                 if (strncmp(p->name, model, strlen(p->name)) == 0)
 326                         return p->pio;
 327         }
 328         return -1;
 329 }
 330
 331 /**
 332  *      ide_get_best_pio_mode   -       get PIO mode from drive
 333  *      @driver: drive to consider
 334  *      @mode_wanted: preferred mode
 335  *      @max_mode: highest allowed
 336  *      @d: pio data
 337  *
 338  *      This routine returns the recommended PIO settings for a given drive,
 339  *      based on the drive->id information and the ide_pio_blacklist[].
 340  *      This is used by most chipset support modules when "auto-tuning".
 341  *
 342  *      Drive PIO mode auto selection
 343  */
 344
 345 u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode, ide_pio_data_t *d)
 346 {
 347         int pio_mode;
 348         int cycle_time = 0;
 349         int use_iordy = 0;
 350         struct hd_driveid* id = drive->id;
 351         int overridden  = 0;
 352
 353         if (mode_wanted != 255) {
 354                 pio_mode = mode_wanted;
 355         } else if (!drive->id) {
 356                 pio_mode = 0;
 357         } else if ((pio_mode = ide_scan_pio_blacklist(id->model)) != -1) {
 358                 overridden = 1;
 359                 use_iordy = (pio_mode > 2);
 360         } else {
 361                 pio_mode = id->tPIO;
 362                 if (pio_mode > 2) {     /* 2 is maximum allowed tPIO value */
 363                         pio_mode = 2;
 364                         overridden = 1;
 365                 }
 366                 if (id->field_valid & 2) {        /* drive implements ATA2? */
 367                         if (id->capability & 8) { /* drive supports use_iordy? */
 368                                 use_iordy = 1;
 369                                 cycle_time = id->eide_pio_iordy;
 370                                 if (id->eide_pio_modes & 7) {
 371                                         overridden = 0;
 372                                         if (id->eide_pio_modes & 4)
 373                                                 pio_mode = 5;
 374                                         else if (id->eide_pio_modes & 2)
 375                                                 pio_mode = 4;
 376                                         else
 377                                                 pio_mode = 3;
 378                                 }
 379                         } else {
 380                                 cycle_time = id->eide_pio;
 381                         }
 382                 }
 383
 384 #if 0
 385                 if (drive->id->major_rev_num & 0x0004) printk("ATA-2 ");
 386 #endif
 387
 388                 /*
 389                  * Conservative "downgrade" for all pre-ATA2 drives
 390                  */
 391                 if (pio_mode && pio_mode < 4) {
 392                         pio_mode--;
 393                         overridden = 1;
 394 #if 0
 395                         use_iordy = (pio_mode > 2);
 396 #endif
 397                         if (cycle_time && cycle_time < ide_pio_timings[pio_mode].cycle_time)
 398                                 cycle_time = 0; /* use standard timing */
 399                 }
 400         }
 401         if (pio_mode > max_mode) {
 402                 pio_mode = max_mode;
 403                 cycle_time = 0;
 404         }
 405         if (d) {
 406                 d->pio_mode = pio_mode;
 407                 d->cycle_time = cycle_time ? cycle_time : ide_pio_timings[pio_mode].cycle_time;
 408                 d->use_iordy = use_iordy;
 409                 d->overridden = overridden;
 410         }
 411         return pio_mode;
 412 }
 413
 414 EXPORT_SYMBOL_GPL(ide_get_best_pio_mode);
 415
 416 /**
 417  *      ide_toggle_bounce       -       handle bounce buffering
 418  *      @drive: drive to update
 419  *      @on: on/off boolean
 420  *
 421  *      Enable or disable bounce buffering for the device. Drives move
 422  *      between PIO and DMA and that changes the rules we need.
 423  */
 424
 425 void ide_toggle_bounce(ide_drive_t *drive, int on)
 426 {
 427         u64 addr = BLK_BOUNCE_HIGH;     /* dma64_addr_t */
 428
 429         if (!PCI_DMA_BUS_IS_PHYS) {
 430                 addr = BLK_BOUNCE_ANY;
 431         } else if (on && drive->media == ide_disk) {
 432                 if (HWIF(drive)->pci_dev)
 433                         addr = HWIF(drive)->pci_dev->dma_mask;
 434         }
 435
 436         if (drive->queue)
 437                 blk_queue_bounce_limit(drive->queue, addr);
 438 }
 439
 440 /**
 441  *      ide_set_xfer_rate       -       set transfer rate
 442  *      @drive: drive to set
 443  *      @speed: speed to attempt to set
 444  *
 445  *      General helper for setting the speed of an IDE device. This
 446  *      function knows about user enforced limits from the configuration
 447  *      which speedproc() does not.  High level drivers should never
 448  *      invoke speedproc() directly.
 449  */
 450
 451 int ide_set_xfer_rate(ide_drive_t *drive, u8 rate)
 452 {
 453 #ifndef CONFIG_BLK_DEV_IDEDMA
 454         rate = min(rate, (u8) XFER_PIO_4);
 455 #endif
 456         if(HWIF(drive)->speedproc)
 457                 return HWIF(drive)->speedproc(drive, rate);
 458         else
 459                 return -1;
 460 }
 461
 462 static void ide_dump_opcode(ide_drive_t *drive)
 463 {
 464         struct request *rq;
 465         u8 opcode = 0;
 466         int found = 0;
 467
 468         spin_lock(&ide_lock);
 469         rq = NULL;
 470         if (HWGROUP(drive))
 471                 rq = HWGROUP(drive)->rq;
 472         spin_unlock(&ide_lock);
 473         if (!rq)
 474                 return;
 475         if (rq->cmd_type == REQ_TYPE_ATA_CMD ||
 476             rq->cmd_type == REQ_TYPE_ATA_TASK) {
 477                 char *args = rq->buffer;
 478                 if (args) {
 479                         opcode = args[0];
 480                         found = 1;
 481                 }
 482         } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
 483                 ide_task_t *args = rq->special;
 484                 if (args) {
 485                         task_struct_t *tf = (task_struct_t *) args->tfRegister;
 486                         opcode = tf->command;
 487                         found = 1;
 488                 }
 489         }
 490
 491         printk("ide: failed opcode was: ");
 492         if (!found)
 493                 printk("unknown\n");
 494         else
 495                 printk("0x%02x\n", opcode);
 496 }
 497
 498 static u8 ide_dump_ata_status(ide_drive_t *drive, const char *msg, u8 stat)
 499 {
 500         ide_hwif_t *hwif = HWIF(drive);
 501         unsigned long flags;
 502         u8 err = 0;
 503
 504         local_irq_save(flags);
 505         printk("%s: %s: status=0x%02x { ", drive->name, msg, stat);
 506         if (stat & BUSY_STAT)
 507                 printk("Busy ");
 508         else {
 509                 if (stat & READY_STAT)  printk("DriveReady ");
 510                 if (stat & WRERR_STAT)  printk("DeviceFault ");
 511                 if (stat & SEEK_STAT)   printk("SeekComplete ");
 512                 if (stat & DRQ_STAT)    printk("DataRequest ");
 513                 if (stat & ECC_STAT)    printk("CorrectedError ");
 514                 if (stat & INDEX_STAT)  printk("Index ");
 515                 if (stat & ERR_STAT)    printk("Error ");
 516         }
 517         printk("}\n");
 518         if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) {
 519                 err = hwif->INB(IDE_ERROR_REG);
 520                 printk("%s: %s: error=0x%02x { ", drive->name, msg, err);
 521                 if (err & ABRT_ERR)     printk("DriveStatusError ");
 522                 if (err & ICRC_ERR)
 523                         printk((err & ABRT_ERR) ? "BadCRC " : "BadSector ");
 524                 if (err & ECC_ERR)      printk("UncorrectableError ");
 525                 if (err & ID_ERR)       printk("SectorIdNotFound ");
 526                 if (err & TRK0_ERR)     printk("TrackZeroNotFound ");
 527                 if (err & MARK_ERR)     printk("AddrMarkNotFound ");
 528                 printk("}");
 529                 if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR ||
 530                     (err & (ECC_ERR|ID_ERR|MARK_ERR))) {
 531                         if (drive->addressing == 1) {
 532                                 __u64 sectors = 0;
 533                                 u32 low = 0, high = 0;
 534                                 low = ide_read_24(drive);
 535                                 hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG);
 536                                 high = ide_read_24(drive);
 537                                 sectors = ((__u64)high << 24) | low;
 538                                 printk(", LBAsect=%llu, high=%d, low=%d",
 539                                        (unsigned long long) sectors,
 540                                        high, low);
 541                         } else {
 542                                 u8 cur = hwif->INB(IDE_SELECT_REG);
 543                                 if (cur & 0x40) {       /* using LBA? */
 544                                         printk(", LBAsect=%ld", (unsigned long)
 545                                          ((cur&0xf)<<24)
 546                                          |(hwif->INB(IDE_HCYL_REG)<<16)
 547                                          |(hwif->INB(IDE_LCYL_REG)<<8)
 548                                          | hwif->INB(IDE_SECTOR_REG));
 549                                 } else {
 550                                         printk(", CHS=%d/%d/%d",
 551                                          (hwif->INB(IDE_HCYL_REG)<<8) +
 552                                           hwif->INB(IDE_LCYL_REG),
 553                                           cur & 0xf,
 554                                           hwif->INB(IDE_SECTOR_REG));
 555                                 }
 556                         }
 557                         if (HWGROUP(drive) && HWGROUP(drive)->rq)
 558                                 printk(", sector=%llu",
 559                                         (unsigned long long)HWGROUP(drive)->rq->sector);
 560                 }
 561                 printk("\n");
 562         }
 563         ide_dump_opcode(drive);
 564         local_irq_restore(flags);
 565         return err;
 566 }
 567
 568 /**
 569  *      ide_dump_atapi_status       -       print human readable atapi status
 570  *      @drive: drive that status applies to
 571  *      @msg: text message to print
 572  *      @stat: status byte to decode
 573  *
 574  *      Error reporting, in human readable form (luxurious, but a memory hog).
 575  */
 576
 577 static u8 ide_dump_atapi_status(ide_drive_t *drive, const char *msg, u8 stat)
 578 {
 579         unsigned long flags;
 580
 581         atapi_status_t status;
 582         atapi_error_t error;
 583
 584         status.all = stat;
 585         error.all = 0;
 586         local_irq_save(flags);
 587         printk("%s: %s: status=0x%02x { ", drive->name, msg, stat);
 588         if (status.b.bsy)
 589                 printk("Busy ");
 590         else {
 591                 if (status.b.drdy)      printk("DriveReady ");
 592                 if (status.b.df)        printk("DeviceFault ");
 593                 if (status.b.dsc)       printk("SeekComplete ");
 594                 if (status.b.drq)       printk("DataRequest ");
 595                 if (status.b.corr)      printk("CorrectedError ");
 596                 if (status.b.idx)       printk("Index ");
 597                 if (status.b.check)     printk("Error ");
 598         }
 599         printk("}\n");
 600         if (status.b.check && !status.b.bsy) {
 601                 error.all = HWIF(drive)->INB(IDE_ERROR_REG);
 602                 printk("%s: %s: error=0x%02x { ", drive->name, msg, error.all);
 603                 if (error.b.ili)        printk("IllegalLengthIndication ");
 604                 if (error.b.eom)        printk("EndOfMedia ");
 605                 if (error.b.abrt)       printk("AbortedCommand ");
 606                 if (error.b.mcr)        printk("MediaChangeRequested ");
 607                 if (error.b.sense_key)  printk("LastFailedSense=0x%02x ",
 608                                                 error.b.sense_key);
 609                 printk("}\n");
 610         }
 611         ide_dump_opcode(drive);
 612         local_irq_restore(flags);
 613         return error.all;
 614 }
 615
 616 /**
 617  *      ide_dump_status         -       translate ATA/ATAPI error
 618  *      @drive: drive the error occured on
 619  *      @msg: information string
 620  *      @stat: status byte
 621  *
 622  *      Error reporting, in human readable form (luxurious, but a memory hog).
 623  *      Combines the drive name, message and status byte to provide a
 624  *      user understandable explanation of the device error.
 625  */
 626
 627 u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat)
 628 {
 629         if (drive->media == ide_disk)
 630                 return ide_dump_ata_status(drive, msg, stat);
 631         return ide_dump_atapi_status(drive, msg, stat);
 632 }
 633
 634 EXPORT_SYMBOL(ide_dump_status);