drivers/ide/ide.c

   1 /*
   2  *  linux/drivers/ide/ide.c             Version 7.00beta2       Mar 05 2003
   3  *
   4  *  Copyright (C) 1994-1998  Linus Torvalds & authors (see below)
   5  */
   6
   7 /*
   8  *  Mostly written by Mark Lord  <mlord@pobox.com>
   9  *                and Gadi Oxman <gadio@netvision.net.il>
  10  *                and Andre Hedrick <andre@linux-ide.org>
  11  *
  12  *  See linux/MAINTAINERS for address of current maintainer.
  13  *
  14  * This is the multiple IDE interface driver, as evolved from hd.c.
  15  * It supports up to MAX_HWIFS IDE interfaces, on one or more IRQs
  16  *   (usually 14 & 15).
  17  * There can be up to two drives per interface, as per the ATA-2 spec.
  18  *
  19  * Primary:    ide0, port 0x1f0; major=3;  hda is minor=0; hdb is minor=64
  20  * Secondary:  ide1, port 0x170; major=22; hdc is minor=0; hdd is minor=64
  21  * Tertiary:   ide2, port 0x???; major=33; hde is minor=0; hdf is minor=64
  22  * Quaternary: ide3, port 0x???; major=34; hdg is minor=0; hdh is minor=64
  23  * ...
  24  *
  25  *  From hd.c:
  26  *  |
  27  *  | It traverses the request-list, using interrupts to jump between functions.
  28  *  | As nearly all functions can be called within interrupts, we may not sleep.
  29  *  | Special care is recommended.  Have Fun!
  30  *  |
  31  *  | modified by Drew Eckhardt to check nr of hd's from the CMOS.
  32  *  |
  33  *  | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug
  34  *  | in the early extended-partition checks and added DM partitions.
  35  *  |
  36  *  | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI).
  37  *  |
  38  *  | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads",
  39  *  | and general streamlining by Mark Lord (mlord@pobox.com).
  40  *
  41  *  October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by:
  42  *
  43  *      Mark Lord       (mlord@pobox.com)               (IDE Perf.Pkg)
  44  *      Delman Lee      (delman@ieee.org)               ("Mr. atdisk2")
  45  *      Scott Snyder    (snyder@fnald0.fnal.gov)        (ATAPI IDE cd-rom)
  46  *
  47  *  This was a rewrite of just about everything from hd.c, though some original
  48  *  code is still sprinkled about.  Think of it as a major evolution, with
  49  *  inspiration from lots of linux users, esp.  hamish@zot.apana.org.au
  50  *
  51  *  Version 1.0 ALPHA   initial code, primary i/f working okay
  52  *  Version 1.3 BETA    dual i/f on shared irq tested & working!
  53  *  Version 1.4 BETA    added auto probing for irq(s)
  54  *  Version 1.5 BETA    added ALPHA (untested) support for IDE cd-roms,
  55  *  ...
  56  * Version 5.50         allow values as small as 20 for idebus=
  57  * Version 5.51         force non io_32bit in drive_cmd_intr()
  58  *                      change delay_10ms() to delay_50ms() to fix problems
  59  * Version 5.52         fix incorrect invalidation of removable devices
  60  *                      add "hdx=slow" command line option
  61  * Version 5.60         start to modularize the driver; the disk and ATAPI
  62  *                       drivers can be compiled as loadable modules.
  63  *                      move IDE probe code to ide-probe.c
  64  *                      move IDE disk code to ide-disk.c
  65  *                      add support for generic IDE device subdrivers
  66  *                      add m68k code from Geert Uytterhoeven
  67  *                      probe all interfaces by default
  68  *                      add ioctl to (re)probe an interface
  69  * Version 6.00         use per device request queues
  70  *                      attempt to optimize shared hwgroup performance
  71  *                      add ioctl to manually adjust bandwidth algorithms
  72  *                      add kerneld support for the probe module
  73  *                      fix bug in ide_error()
  74  *                      fix bug in the first ide_get_lock() call for Atari
  75  *                      don't flush leftover data for ATAPI devices
  76  * Version 6.01         clear hwgroup->active while the hwgroup sleeps
  77  *                      support HDIO_GETGEO for floppies
  78  * Version 6.02         fix ide_ack_intr() call
  79  *                      check partition table on floppies
  80  * Version 6.03         handle bad status bit sequencing in ide_wait_stat()
  81  * Version 6.10         deleted old entries from this list of updates
  82  *                      replaced triton.c with ide-dma.c generic PCI DMA
  83  *                      added support for BIOS-enabled UltraDMA
  84  *                      rename all "promise" things to "pdc4030"
  85  *                      fix EZ-DRIVE handling on small disks
  86  * Version 6.11         fix probe error in ide_scan_devices()
  87  *                      fix ancient "jiffies" polling bugs
  88  *                      mask all hwgroup interrupts on each irq entry
  89  * Version 6.12         integrate ioctl and proc interfaces
  90  *                      fix parsing of "idex=" command line parameter
  91  * Version 6.13         add support for ide4/ide5 courtesy rjones@orchestream.com
  92  * Version 6.14         fixed IRQ sharing among PCI devices
  93  * Version 6.15         added SMP awareness to IDE drivers
  94  * Version 6.16         fixed various bugs; even more SMP friendly
  95  * Version 6.17         fix for newest EZ-Drive problem
  96  * Version 6.18         default unpartitioned-disk translation now "BIOS LBA"
  97  * Version 6.19         Re-design for a UNIFORM driver for all platforms,
  98  *                        model based on suggestions from Russell King and
  99  *                        Geert Uytterhoeven
 100  *                      Promise DC4030VL now supported.
 101  *                      add support for ide6/ide7
 102  *                      delay_50ms() changed to ide_delay_50ms() and exported.
 103  * Version 6.20         Added/Fixed Generic ATA-66 support and hwif detection.
 104  *                      Added hdx=flash to allow for second flash disk
 105  *                        detection w/o the hang loop.
 106  *                      Added support for ide8/ide9
 107  *                      Added idex=ata66 for the quirky chipsets that are
 108  *                        ATA-66 compliant, but have yet to determine a method
 109  *                        of verification of the 80c cable presence.
 110  *                        Specifically Promise's PDC20262 chipset.
 111  * Version 6.21         Fixing/Fixed SMP spinlock issue with insight from an old
 112  *                        hat that clarified original low level driver design.
 113  * Version 6.30         Added SMP support; fixed multmode issues.  -ml
 114  * Version 6.31         Debug Share INTR's and request queue streaming
 115  *                      Native ATA-100 support
 116  *                      Prep for Cascades Project
 117  * Version 7.00alpha    First named revision of ide rearrange
 118  *
 119  *  Some additional driver compile-time options are in ./include/linux/ide.h
 120  *
 121  *  To do, in likely order of completion:
 122  *      - modify kernel to obtain BIOS geometry for drives on 2nd/3rd/4th i/f
 123  *
 124  */
 125
 126 #define REVISION        "Revision: 7.00alpha2"
 127 #define VERSION         "Id: ide.c 7.00a2 20020906"
 128
 129 #define _IDE_C                  /* Tell ide.h it's really us */
 130
 131 #include <linux/module.h>
 132 #include <linux/types.h>
 133 #include <linux/string.h>
 134 #include <linux/kernel.h>
 135 #include <linux/timer.h>
 136 #include <linux/mm.h>
 137 #include <linux/interrupt.h>
 138 #include <linux/major.h>
 139 #include <linux/errno.h>
 140 #include <linux/genhd.h>
 141 #include <linux/blkpg.h>
 142 #include <linux/slab.h>
 143 #include <linux/init.h>
 144 #include <linux/pci.h>
 145 #include <linux/delay.h>
 146 #include <linux/ide.h>
 147 #include <linux/completion.h>
 148 #include <linux/reboot.h>
 149 #include <linux/cdrom.h>
 150 #include <linux/seq_file.h>
 151 #include <linux/device.h>
 152 #include <linux/bitops.h>
 153
 154 #include <asm/byteorder.h>
 155 #include <asm/irq.h>
 156 #include <asm/uaccess.h>
 157 #include <asm/io.h>
 158
 159
 160 /* default maximum number of failures */
 161 #define IDE_DEFAULT_MAX_FAILURES        1
 162
 163 static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR,
 164                                         IDE2_MAJOR, IDE3_MAJOR,
 165                                         IDE4_MAJOR, IDE5_MAJOR,
 166                                         IDE6_MAJOR, IDE7_MAJOR,
 167                                         IDE8_MAJOR, IDE9_MAJOR };
 168
 169 static int idebus_parameter;    /* holds the "idebus=" parameter */
 170 static int system_bus_speed;    /* holds what we think is VESA/PCI bus speed */
 171
 172 DEFINE_MUTEX(ide_cfg_mtx);
 173  __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
 174
 175 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
 176 static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */
 177 #endif
 178
 179 int noautodma = 0;
 180
 181 EXPORT_SYMBOL(noautodma);
 182
 183 #ifdef CONFIG_BLK_DEV_IDEACPI
 184 int ide_noacpi = 0;
 185 int ide_noacpitfs = 1;
 186 int ide_noacpionboot = 1;
 187 #endif
 188
 189 /*
 190  * This is declared extern in ide.h, for access by other IDE modules:
 191  */
 192 ide_hwif_t ide_hwifs[MAX_HWIFS];        /* master data repository */
 193
 194 EXPORT_SYMBOL(ide_hwifs);
 195
 196 /*
 197  * Do not even *think* about calling this!
 198  */
 199 static void init_hwif_data(ide_hwif_t *hwif, unsigned int index)
 200 {
 201         unsigned int unit;
 202
 203         /* bulk initialize hwif & drive info with zeros */
 204         memset(hwif, 0, sizeof(ide_hwif_t));
 205
 206         /* fill in any non-zero initial values */
 207         hwif->index     = index;
 208         hwif->major     = ide_hwif_to_major[index];
 209
 210         hwif->name[0]   = 'i';
 211         hwif->name[1]   = 'd';
 212         hwif->name[2]   = 'e';
 213         hwif->name[3]   = '0' + index;
 214
 215         hwif->bus_state = BUSSTATE_ON;
 216
 217         hwif->atapi_dma = 0;            /* disable all atapi dma */
 218
 219         init_completion(&hwif->gendev_rel_comp);
 220
 221         default_hwif_iops(hwif);
 222         default_hwif_transport(hwif);
 223         for (unit = 0; unit < MAX_DRIVES; ++unit) {
 224                 ide_drive_t *drive = &hwif->drives[unit];
 225
 226                 drive->media                    = ide_disk;
 227                 drive->select.all               = (unit<<4)|0xa0;
 228                 drive->hwif                     = hwif;
 229                 drive->ctl                      = 0x08;
 230                 drive->ready_stat               = READY_STAT;
 231                 drive->bad_wstat                = BAD_W_STAT;
 232                 drive->special.b.recalibrate    = 1;
 233                 drive->special.b.set_geometry   = 1;
 234                 drive->name[0]                  = 'h';
 235                 drive->name[1]                  = 'd';
 236                 drive->name[2]                  = 'a' + (index * MAX_DRIVES) + unit;
 237                 drive->max_failures             = IDE_DEFAULT_MAX_FAILURES;
 238                 drive->using_dma                = 0;
 239                 drive->vdma                     = 0;
 240                 INIT_LIST_HEAD(&drive->list);
 241                 init_completion(&drive->gendev_rel_comp);
 242         }
 243 }
 244
 245 static void init_hwif_default(ide_hwif_t *hwif, unsigned int index)
 246 {
 247         hw_regs_t hw;
 248
 249         memset(&hw, 0, sizeof(hw_regs_t));
 250
 251         ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq);
 252
 253         memcpy(&hwif->hw, &hw, sizeof(hw));
 254         memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports));
 255
 256         hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
 257 #ifdef CONFIG_BLK_DEV_HD
 258         if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA)
 259                 hwif->noprobe = 1;      /* may be overridden by ide_setup() */
 260 #endif
 261 }
 262
 263 extern void ide_arm_init(void);
 264
 265 /*
 266  * init_ide_data() sets reasonable default values into all fields
 267  * of all instances of the hwifs and drives, but only on the first call.
 268  * Subsequent calls have no effect (they don't wipe out anything).
 269  *
 270  * This routine is normally called at driver initialization time,
 271  * but may also be called MUCH earlier during kernel "command-line"
 272  * parameter processing.  As such, we cannot depend on any other parts
 273  * of the kernel (such as memory allocation) to be functioning yet.
 274  *
 275  * This is too bad, as otherwise we could dynamically allocate the
 276  * ide_drive_t structs as needed, rather than always consuming memory
 277  * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
 278  *
 279  * FIXME: We should stuff the setup data into __init and copy the
 280  * relevant hwifs/allocate them properly during boot.
 281  */
 282 #define MAGIC_COOKIE 0x12345678
 283 static void __init init_ide_data (void)
 284 {
 285         ide_hwif_t *hwif;
 286         unsigned int index;
 287         static unsigned long magic_cookie = MAGIC_COOKIE;
 288
 289         if (magic_cookie != MAGIC_COOKIE)
 290                 return;         /* already initialized */
 291         magic_cookie = 0;
 292
 293         /* Initialise all interface structures */
 294         for (index = 0; index < MAX_HWIFS; ++index) {
 295                 hwif = &ide_hwifs[index];
 296                 init_hwif_data(hwif, index);
 297                 init_hwif_default(hwif, index);
 298 #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
 299                 hwif->irq = hwif->hw.irq =
 300                         ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]);
 301 #endif
 302         }
 303 #ifdef CONFIG_IDE_ARM
 304         ide_arm_init();
 305 #endif
 306 }
 307
 308 /**
 309  *      ide_system_bus_speed    -       guess bus speed
 310  *
 311  *      ide_system_bus_speed() returns what we think is the system VESA/PCI
 312  *      bus speed (in MHz). This is used for calculating interface PIO timings.
 313  *      The default is 40 for known PCI systems, 50 otherwise.
 314  *      The "idebus=xx" parameter can be used to override this value.
 315  *      The actual value to be used is computed/displayed the first time
 316  *      through. Drivers should only use this as a last resort.
 317  *
 318  *      Returns a guessed speed in MHz.
 319  */
 320
 321 static int ide_system_bus_speed(void)
 322 {
 323 #ifdef CONFIG_PCI
 324         static struct pci_device_id pci_default[] = {
 325                 { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) },
 326                 { }
 327         };
 328 #else
 329 #define pci_default 0
 330 #endif /* CONFIG_PCI */
 331
 332         if (!system_bus_speed) {
 333                 if (idebus_parameter) {
 334                         /* user supplied value */
 335                         system_bus_speed = idebus_parameter;
 336                 } else if (pci_dev_present(pci_default)) {
 337                         /* safe default value for PCI */
 338                         system_bus_speed = 33;
 339                 } else {
 340                         /* safe default value for VESA and PCI */
 341                         system_bus_speed = 50;
 342                 }
 343                 printk(KERN_INFO "ide: Assuming %dMHz system bus speed "
 344                         "for PIO modes%s\n", system_bus_speed,
 345                         idebus_parameter ? "" : "; override with idebus=xx");
 346         }
 347         return system_bus_speed;
 348 }
 349
 350 static struct resource* hwif_request_region(ide_hwif_t *hwif,
 351                                             unsigned long addr, int num)
 352 {
 353         struct resource *res = request_region(addr, num, hwif->name);
 354
 355         if (!res)
 356                 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
 357                                 hwif->name, addr, addr+num-1);
 358         return res;
 359 }
 360
 361 /**
 362  *      ide_hwif_request_regions - request resources for IDE
 363  *      @hwif: interface to use
 364  *
 365  *      Requests all the needed resources for an interface.
 366  *      Right now core IDE code does this work which is deeply wrong.
 367  *      MMIO leaves it to the controller driver,
 368  *      PIO will migrate this way over time.
 369  */
 370
 371 int ide_hwif_request_regions(ide_hwif_t *hwif)
 372 {
 373         unsigned long addr;
 374         unsigned int i;
 375
 376         if (hwif->mmio)
 377                 return 0;
 378         addr = hwif->io_ports[IDE_CONTROL_OFFSET];
 379         if (addr && !hwif_request_region(hwif, addr, 1))
 380                 goto control_region_busy;
 381         hwif->straight8 = 0;
 382         addr = hwif->io_ports[IDE_DATA_OFFSET];
 383         if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
 384                 if (!hwif_request_region(hwif, addr, 8))
 385                         goto data_region_busy;
 386                 hwif->straight8 = 1;
 387                 return 0;
 388         }
 389         for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
 390                 addr = hwif->io_ports[i];
 391                 if (!hwif_request_region(hwif, addr, 1)) {
 392                         while (--i)
 393                                 release_region(addr, 1);
 394                         goto data_region_busy;
 395                 }
 396         }
 397         return 0;
 398
 399 data_region_busy:
 400         addr = hwif->io_ports[IDE_CONTROL_OFFSET];
 401         if (addr)
 402                 release_region(addr, 1);
 403 control_region_busy:
 404         /* If any errors are return, we drop the hwif interface. */
 405         return -EBUSY;
 406 }
 407
 408 /**
 409  *      ide_hwif_release_regions - free IDE resources
 410  *
 411  *      Note that we only release the standard ports,
 412  *      and do not even try to handle any extra ports
 413  *      allocated for weird IDE interface chipsets.
 414  *
 415  *      Note also that we don't yet handle mmio resources here. More
 416  *      importantly our caller should be doing this so we need to
 417  *      restructure this as a helper function for drivers.
 418  */
 419
 420 void ide_hwif_release_regions(ide_hwif_t *hwif)
 421 {
 422         u32 i = 0;
 423
 424         if (hwif->mmio)
 425                 return;
 426         if (hwif->io_ports[IDE_CONTROL_OFFSET])
 427                 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
 428         if (hwif->straight8) {
 429                 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
 430                 return;
 431         }
 432         for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
 433                 if (hwif->io_ports[i])
 434                         release_region(hwif->io_ports[i], 1);
 435 }
 436
 437 /**
 438  *      ide_hwif_restore        -       restore hwif to template
 439  *      @hwif: hwif to update
 440  *      @tmp_hwif: template
 441  *
 442  *      Restore hwif to a previous state by copying most settings
 443  *      from the template.
 444  */
 445
 446 static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
 447 {
 448         hwif->hwgroup                   = tmp_hwif->hwgroup;
 449
 450         hwif->gendev.parent             = tmp_hwif->gendev.parent;
 451
 452         hwif->proc                      = tmp_hwif->proc;
 453
 454         hwif->major                     = tmp_hwif->major;
 455         hwif->straight8                 = tmp_hwif->straight8;
 456         hwif->bus_state                 = tmp_hwif->bus_state;
 457
 458         hwif->host_flags                = tmp_hwif->host_flags;
 459
 460         hwif->atapi_dma                 = tmp_hwif->atapi_dma;
 461         hwif->ultra_mask                = tmp_hwif->ultra_mask;
 462         hwif->mwdma_mask                = tmp_hwif->mwdma_mask;
 463         hwif->swdma_mask                = tmp_hwif->swdma_mask;
 464
 465         hwif->cbl                       = tmp_hwif->cbl;
 466
 467         hwif->chipset                   = tmp_hwif->chipset;
 468         hwif->hold                      = tmp_hwif->hold;
 469
 470 #ifdef CONFIG_BLK_DEV_IDEPCI
 471         hwif->pci_dev                   = tmp_hwif->pci_dev;
 472         hwif->cds                       = tmp_hwif->cds;
 473 #endif
 474
 475         hwif->tuneproc                  = tmp_hwif->tuneproc;
 476         hwif->speedproc                 = tmp_hwif->speedproc;
 477         hwif->udma_filter               = tmp_hwif->udma_filter;
 478         hwif->selectproc                = tmp_hwif->selectproc;
 479         hwif->reset_poll                = tmp_hwif->reset_poll;
 480         hwif->pre_reset                 = tmp_hwif->pre_reset;
 481         hwif->resetproc                 = tmp_hwif->resetproc;
 482         hwif->intrproc                  = tmp_hwif->intrproc;
 483         hwif->maskproc                  = tmp_hwif->maskproc;
 484         hwif->quirkproc                 = tmp_hwif->quirkproc;
 485         hwif->busproc                   = tmp_hwif->busproc;
 486
 487         hwif->ata_input_data            = tmp_hwif->ata_input_data;
 488         hwif->ata_output_data           = tmp_hwif->ata_output_data;
 489         hwif->atapi_input_bytes         = tmp_hwif->atapi_input_bytes;
 490         hwif->atapi_output_bytes        = tmp_hwif->atapi_output_bytes;
 491
 492         hwif->dma_setup                 = tmp_hwif->dma_setup;
 493         hwif->dma_exec_cmd              = tmp_hwif->dma_exec_cmd;
 494         hwif->dma_start                 = tmp_hwif->dma_start;
 495         hwif->ide_dma_end               = tmp_hwif->ide_dma_end;
 496         hwif->ide_dma_check             = tmp_hwif->ide_dma_check;
 497         hwif->ide_dma_on                = tmp_hwif->ide_dma_on;
 498         hwif->dma_off_quietly           = tmp_hwif->dma_off_quietly;
 499         hwif->ide_dma_test_irq          = tmp_hwif->ide_dma_test_irq;
 500         hwif->ide_dma_clear_irq         = tmp_hwif->ide_dma_clear_irq;
 501         hwif->dma_host_on               = tmp_hwif->dma_host_on;
 502         hwif->dma_host_off              = tmp_hwif->dma_host_off;
 503         hwif->dma_lost_irq              = tmp_hwif->dma_lost_irq;
 504         hwif->dma_timeout               = tmp_hwif->dma_timeout;
 505
 506         hwif->OUTB                      = tmp_hwif->OUTB;
 507         hwif->OUTBSYNC                  = tmp_hwif->OUTBSYNC;
 508         hwif->OUTW                      = tmp_hwif->OUTW;
 509         hwif->OUTSW                     = tmp_hwif->OUTSW;
 510         hwif->OUTSL                     = tmp_hwif->OUTSL;
 511
 512         hwif->INB                       = tmp_hwif->INB;
 513         hwif->INW                       = tmp_hwif->INW;
 514         hwif->INSW                      = tmp_hwif->INSW;
 515         hwif->INSL                      = tmp_hwif->INSL;
 516
 517         hwif->sg_max_nents              = tmp_hwif->sg_max_nents;
 518
 519         hwif->mmio                      = tmp_hwif->mmio;
 520         hwif->rqsize                    = tmp_hwif->rqsize;
 521         hwif->no_lba48                  = tmp_hwif->no_lba48;
 522
 523 #ifndef CONFIG_BLK_DEV_IDECS
 524         hwif->irq                       = tmp_hwif->irq;
 525 #endif
 526
 527         hwif->dma_base                  = tmp_hwif->dma_base;
 528         hwif->dma_master                = tmp_hwif->dma_master;
 529         hwif->dma_command               = tmp_hwif->dma_command;
 530         hwif->dma_vendor1               = tmp_hwif->dma_vendor1;
 531         hwif->dma_status                = tmp_hwif->dma_status;
 532         hwif->dma_vendor3               = tmp_hwif->dma_vendor3;
 533         hwif->dma_prdtable              = tmp_hwif->dma_prdtable;
 534
 535         hwif->config_data               = tmp_hwif->config_data;
 536         hwif->select_data               = tmp_hwif->select_data;
 537         hwif->extra_base                = tmp_hwif->extra_base;
 538         hwif->extra_ports               = tmp_hwif->extra_ports;
 539         hwif->autodma                   = tmp_hwif->autodma;
 540
 541         hwif->hwif_data                 = tmp_hwif->hwif_data;
 542 }
 543
 544 /**
 545  *      ide_unregister          -       free an IDE interface
 546  *      @index: index of interface (will change soon to a pointer)
 547  *
 548  *      Perform the final unregister of an IDE interface. At the moment
 549  *      we don't refcount interfaces so this will also get split up.
 550  *
 551  *      Locking:
 552  *      The caller must not hold the IDE locks
 553  *      The drive present/vanishing is not yet properly locked
 554  *      Take care with the callbacks. These have been split to avoid
 555  *      deadlocking the IDE layer. The shutdown callback is called
 556  *      before we take the lock and free resources. It is up to the
 557  *      caller to be sure there is no pending I/O here, and that
 558  *      the interface will not be reopened (present/vanishing locking
 559  *      isn't yet done BTW). After we commit to the final kill we
 560  *      call the cleanup callback with the ide locks held.
 561  *
 562  *      Unregister restores the hwif structures to the default state.
 563  *      This is raving bonkers.
 564  */
 565
 566 void ide_unregister(unsigned int index)
 567 {
 568         ide_drive_t *drive;
 569         ide_hwif_t *hwif, *g;
 570         static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */
 571         ide_hwgroup_t *hwgroup;
 572         int irq_count = 0, unit;
 573
 574         BUG_ON(index >= MAX_HWIFS);
 575
 576         BUG_ON(in_interrupt());
 577         BUG_ON(irqs_disabled());
 578         mutex_lock(&ide_cfg_mtx);
 579         spin_lock_irq(&ide_lock);
 580         hwif = &ide_hwifs[index];
 581         if (!hwif->present)
 582                 goto abort;
 583         for (unit = 0; unit < MAX_DRIVES; ++unit) {
 584                 drive = &hwif->drives[unit];
 585                 if (!drive->present)
 586                         continue;
 587                 spin_unlock_irq(&ide_lock);
 588                 device_unregister(&drive->gendev);
 589                 wait_for_completion(&drive->gendev_rel_comp);
 590                 spin_lock_irq(&ide_lock);
 591         }
 592         hwif->present = 0;
 593
 594         spin_unlock_irq(&ide_lock);
 595
 596         ide_proc_unregister_port(hwif);
 597
 598         hwgroup = hwif->hwgroup;
 599         /*
 600          * free the irq if we were the only hwif using it
 601          */
 602         g = hwgroup->hwif;
 603         do {
 604                 if (g->irq == hwif->irq)
 605                         ++irq_count;
 606                 g = g->next;
 607         } while (g != hwgroup->hwif);
 608         if (irq_count == 1)
 609                 free_irq(hwif->irq, hwgroup);
 610
 611         spin_lock_irq(&ide_lock);
 612         /*
 613          * Note that we only release the standard ports,
 614          * and do not even try to handle any extra ports
 615          * allocated for weird IDE interface chipsets.
 616          */
 617         ide_hwif_release_regions(hwif);
 618
 619         /*
 620          * Remove us from the hwgroup, and free
 621          * the hwgroup if we were the only member
 622          */
 623         if (hwif->next == hwif) {
 624                 BUG_ON(hwgroup->hwif != hwif);
 625                 kfree(hwgroup);
 626         } else {
 627                 /* There is another interface in hwgroup.
 628                  * Unlink us, and set hwgroup->drive and ->hwif to
 629                  * something sane.
 630                  */
 631                 g = hwgroup->hwif;
 632                 while (g->next != hwif)
 633                         g = g->next;
 634                 g->next = hwif->next;
 635                 if (hwgroup->hwif == hwif) {
 636                         /* Chose a random hwif for hwgroup->hwif.
 637                          * It's guaranteed that there are no drives
 638                          * left in the hwgroup.
 639                          */
 640                         BUG_ON(hwgroup->drive != NULL);
 641                         hwgroup->hwif = g;
 642                 }
 643                 BUG_ON(hwgroup->hwif == hwif);
 644         }
 645
 646         /* More messed up locking ... */
 647         spin_unlock_irq(&ide_lock);
 648         device_unregister(&hwif->gendev);
 649         wait_for_completion(&hwif->gendev_rel_comp);
 650
 651         /*
 652          * Remove us from the kernel's knowledge
 653          */
 654         blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
 655         kfree(hwif->sg_table);
 656         unregister_blkdev(hwif->major, hwif->name);
 657         spin_lock_irq(&ide_lock);
 658
 659         if (hwif->dma_base) {
 660                 (void) ide_release_dma(hwif);
 661
 662                 hwif->dma_base = 0;
 663                 hwif->dma_master = 0;
 664                 hwif->dma_command = 0;
 665                 hwif->dma_vendor1 = 0;
 666                 hwif->dma_status = 0;
 667                 hwif->dma_vendor3 = 0;
 668                 hwif->dma_prdtable = 0;
 669
 670                 hwif->extra_base  = 0;
 671                 hwif->extra_ports = 0;
 672         }
 673
 674         /* copy original settings */
 675         tmp_hwif = *hwif;
 676
 677         /* restore hwif data to pristine status */
 678         init_hwif_data(hwif, index);
 679         init_hwif_default(hwif, index);
 680
 681         ide_hwif_restore(hwif, &tmp_hwif);
 682
 683 abort:
 684         spin_unlock_irq(&ide_lock);
 685         mutex_unlock(&ide_cfg_mtx);
 686 }
 687
 688 EXPORT_SYMBOL(ide_unregister);
 689
 690
 691 /**
 692  *      ide_setup_ports         -       set up IDE interface ports
 693  *      @hw: register descriptions
 694  *      @base: base register
 695  *      @offsets: table of register offsets
 696  *      @ctrl: control register
 697  *      @ack_irq: IRQ ack
 698  *      @irq: interrupt lie
 699  *
 700  *      Setup hw_regs_t structure described by parameters.  You
 701  *      may set up the hw structure yourself OR use this routine to
 702  *      do it for you. This is basically a helper
 703  *
 704  */
 705
 706 void ide_setup_ports (  hw_regs_t *hw,
 707                         unsigned long base, int *offsets,
 708                         unsigned long ctrl, unsigned long intr,
 709                         ide_ack_intr_t *ack_intr,
 710 /*
 711  *                      ide_io_ops_t *iops,
 712  */
 713                         int irq)
 714 {
 715         int i;
 716
 717         memset(hw, 0, sizeof(hw_regs_t));
 718         for (i = 0; i < IDE_NR_PORTS; i++) {
 719                 if (offsets[i] == -1) {
 720                         switch(i) {
 721                                 case IDE_CONTROL_OFFSET:
 722                                         hw->io_ports[i] = ctrl;
 723                                         break;
 724 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
 725                                 case IDE_IRQ_OFFSET:
 726                                         hw->io_ports[i] = intr;
 727                                         break;
 728 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
 729                                 default:
 730                                         hw->io_ports[i] = 0;
 731                                         break;
 732                         }
 733                 } else {
 734                         hw->io_ports[i] = base + offsets[i];
 735                 }
 736         }
 737         hw->irq = irq;
 738         hw->dma = NO_DMA;
 739         hw->ack_intr = ack_intr;
 740 /*
 741  *      hw->iops = iops;
 742  */
 743 }
 744
 745 /**
 746  *      ide_register_hw_with_fixup      -       register IDE interface
 747  *      @hw: hardware registers
 748  *      @initializing: set while initializing built-in drivers
 749  *      @hwifp: pointer to returned hwif
 750  *      @fixup: fixup function
 751  *
 752  *      Register an IDE interface, specifying exactly the registers etc.
 753  *      Set init=1 iff calling before probes have taken place.
 754  *
 755  *      Returns -1 on error.
 756  */
 757
 758 int ide_register_hw_with_fixup(hw_regs_t *hw, int initializing,
 759                                ide_hwif_t **hwifp,
 760                                void(*fixup)(ide_hwif_t *hwif))
 761 {
 762         int index, retry = 1;
 763         ide_hwif_t *hwif;
 764
 765         do {
 766                 for (index = 0; index < MAX_HWIFS; ++index) {
 767                         hwif = &ide_hwifs[index];
 768                         if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
 769                                 goto found;
 770                 }
 771                 for (index = 0; index < MAX_HWIFS; ++index) {
 772                         hwif = &ide_hwifs[index];
 773                         if (hwif->hold)
 774                                 continue;
 775                         if ((!hwif->present && !hwif->mate && !initializing) ||
 776                             (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing))
 777                                 goto found;
 778                 }
 779                 for (index = 0; index < MAX_HWIFS; index++)
 780                         ide_unregister(index);
 781         } while (retry--);
 782         return -1;
 783 found:
 784         if (hwif->present)
 785                 ide_unregister(index);
 786         else if (!hwif->hold) {
 787                 init_hwif_data(hwif, index);
 788                 init_hwif_default(hwif, index);
 789         }
 790         if (hwif->present)
 791                 return -1;
 792         memcpy(&hwif->hw, hw, sizeof(*hw));
 793         memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
 794         hwif->irq = hw->irq;
 795         hwif->noprobe = 0;
 796         hwif->chipset = hw->chipset;
 797         hwif->gendev.parent = hw->dev;
 798
 799         if (!initializing) {
 800                 probe_hwif_init_with_fixup(hwif, fixup);
 801                 ide_proc_register_port(hwif);
 802         }
 803
 804         if (hwifp)
 805                 *hwifp = hwif;
 806
 807         return (initializing || hwif->present) ? index : -1;
 808 }
 809
 810 EXPORT_SYMBOL(ide_register_hw_with_fixup);
 811
 812 int ide_register_hw(hw_regs_t *hw, int initializing, ide_hwif_t **hwifp)
 813 {
 814         return ide_register_hw_with_fixup(hw, initializing, hwifp, NULL);
 815 }
 816
 817 EXPORT_SYMBOL(ide_register_hw);
 818
 819 /*
 820  *      Locks for IDE setting functionality
 821  */
 822
 823 DEFINE_MUTEX(ide_setting_mtx);
 824
 825 EXPORT_SYMBOL_GPL(ide_setting_mtx);
 826
 827 /**
 828  *      ide_spin_wait_hwgroup   -       wait for group
 829  *      @drive: drive in the group
 830  *
 831  *      Wait for an IDE device group to go non busy and then return
 832  *      holding the ide_lock which guards the hwgroup->busy status
 833  *      and right to use it.
 834  */
 835
 836 int ide_spin_wait_hwgroup (ide_drive_t *drive)
 837 {
 838         ide_hwgroup_t *hwgroup = HWGROUP(drive);
 839         unsigned long timeout = jiffies + (3 * HZ);
 840
 841         spin_lock_irq(&ide_lock);
 842
 843         while (hwgroup->busy) {
 844                 unsigned long lflags;
 845                 spin_unlock_irq(&ide_lock);
 846                 local_irq_set(lflags);
 847                 if (time_after(jiffies, timeout)) {
 848                         local_irq_restore(lflags);
 849                         printk(KERN_ERR "%s: channel busy\n", drive->name);
 850                         return -EBUSY;
 851                 }
 852                 local_irq_restore(lflags);
 853                 spin_lock_irq(&ide_lock);
 854         }
 855         return 0;
 856 }
 857
 858 EXPORT_SYMBOL(ide_spin_wait_hwgroup);
 859
 860 int set_io_32bit(ide_drive_t *drive, int arg)
 861 {
 862         if (drive->no_io_32bit)
 863                 return -EPERM;
 864
 865         if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
 866                 return -EINVAL;
 867
 868         drive->io_32bit = arg;
 869 #ifdef CONFIG_BLK_DEV_DTC2278
 870         if (HWIF(drive)->chipset == ide_dtc2278)
 871                 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
 872 #endif /* CONFIG_BLK_DEV_DTC2278 */
 873         return 0;
 874 }
 875
 876 static int set_ksettings(ide_drive_t *drive, int arg)
 877 {
 878         if (arg < 0 || arg > 1)
 879                 return -EINVAL;
 880
 881         if (ide_spin_wait_hwgroup(drive))
 882                 return -EBUSY;
 883         drive->keep_settings = arg;
 884         spin_unlock_irq(&ide_lock);
 885
 886         return 0;
 887 }
 888
 889 int set_using_dma(ide_drive_t *drive, int arg)
 890 {
 891 #ifdef CONFIG_BLK_DEV_IDEDMA
 892         ide_hwif_t *hwif = drive->hwif;
 893         int err = -EPERM;
 894
 895         if (arg < 0 || arg > 1)
 896                 return -EINVAL;
 897
 898         if (!drive->id || !(drive->id->capability & 1))
 899                 goto out;
 900
 901         if (hwif->ide_dma_check == NULL)
 902                 goto out;
 903
 904         err = -EBUSY;
 905         if (ide_spin_wait_hwgroup(drive))
 906                 goto out;
 907         /*
 908          * set ->busy flag, unlock and let it ride
 909          */
 910         hwif->hwgroup->busy = 1;
 911         spin_unlock_irq(&ide_lock);
 912
 913         err = 0;
 914
 915         if (arg) {
 916                 hwif->dma_off_quietly(drive);
 917                 if (ide_set_dma(drive) || hwif->ide_dma_on(drive))
 918                         err = -EIO;
 919         } else
 920                 ide_dma_off(drive);
 921
 922         /*
 923          * lock, clear ->busy flag and unlock before leaving
 924          */
 925         spin_lock_irq(&ide_lock);
 926         hwif->hwgroup->busy = 0;
 927         spin_unlock_irq(&ide_lock);
 928 out:
 929         return err;
 930 #else
 931         if (arg < 0 || arg > 1)
 932                 return -EINVAL;
 933
 934         return -EPERM;
 935 #endif
 936 }
 937
 938 int set_pio_mode(ide_drive_t *drive, int arg)
 939 {
 940         struct request rq;
 941
 942         if (arg < 0 || arg > 255)
 943                 return -EINVAL;
 944
 945         if (!HWIF(drive)->tuneproc)
 946                 return -ENOSYS;
 947         if (drive->special.b.set_tune)
 948                 return -EBUSY;
 949         ide_init_drive_cmd(&rq);
 950         drive->tune_req = (u8) arg;
 951         drive->special.b.set_tune = 1;
 952         (void) ide_do_drive_cmd(drive, &rq, ide_wait);
 953         return 0;
 954 }
 955
 956 static int set_unmaskirq(ide_drive_t *drive, int arg)
 957 {
 958         if (drive->no_unmask)
 959                 return -EPERM;
 960
 961         if (arg < 0 || arg > 1)
 962                 return -EINVAL;
 963
 964         if (ide_spin_wait_hwgroup(drive))
 965                 return -EBUSY;
 966         drive->unmask = arg;
 967         spin_unlock_irq(&ide_lock);
 968
 969         return 0;
 970 }
 971
 972 /**
 973  *      system_bus_clock        -       clock guess
 974  *
 975  *      External version of the bus clock guess used by very old IDE drivers
 976  *      for things like VLB timings. Should not be used.
 977  */
 978
 979 int system_bus_clock (void)
 980 {
 981         return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed ));
 982 }
 983
 984 EXPORT_SYMBOL(system_bus_clock);
 985
 986 static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
 987 {
 988         ide_drive_t *drive = dev->driver_data;
 989         ide_hwif_t *hwif = HWIF(drive);
 990         struct request rq;
 991         struct request_pm_state rqpm;
 992         ide_task_t args;
 993
 994         /* Call ACPI _GTM only once */
 995         if (!(drive->dn % 2))
 996                 ide_acpi_get_timing(hwif);
 997
 998         memset(&rq, 0, sizeof(rq));
 999         memset(&rqpm, 0, sizeof(rqpm));
1000         memset(&args, 0, sizeof(args));
1001         rq.cmd_type = REQ_TYPE_PM_SUSPEND;
1002         rq.special = &args;
1003         rq.data = &rqpm;
1004         rqpm.pm_step = ide_pm_state_start_suspend;
1005         if (mesg.event == PM_EVENT_PRETHAW)
1006                 mesg.event = PM_EVENT_FREEZE;
1007         rqpm.pm_state = mesg.event;
1008
1009         return ide_do_drive_cmd(drive, &rq, ide_wait);
1010 }
1011
1012 static int generic_ide_resume(struct device *dev)
1013 {
1014         ide_drive_t *drive = dev->driver_data;
1015         ide_hwif_t *hwif = HWIF(drive);
1016         struct request rq;
1017         struct request_pm_state rqpm;
1018         ide_task_t args;
1019         int err;
1020
1021         /* Call ACPI _STM only once */
1022         if (!(drive->dn % 2))
1023                 ide_acpi_push_timing(hwif);
1024
1025         ide_acpi_exec_tfs(drive);
1026
1027         memset(&rq, 0, sizeof(rq));
1028         memset(&rqpm, 0, sizeof(rqpm));
1029         memset(&args, 0, sizeof(args));
1030         rq.cmd_type = REQ_TYPE_PM_RESUME;
1031         rq.special = &args;
1032         rq.data = &rqpm;
1033         rqpm.pm_step = ide_pm_state_start_resume;
1034         rqpm.pm_state = PM_EVENT_ON;
1035
1036         err = ide_do_drive_cmd(drive, &rq, ide_head_wait);
1037
1038         if (err == 0 && dev->driver) {
1039                 ide_driver_t *drv = to_ide_driver(dev->driver);
1040
1041                 if (drv->resume)
1042                         drv->resume(drive);
1043         }
1044
1045         return err;
1046 }
1047
1048 int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
1049                         unsigned int cmd, unsigned long arg)
1050 {
1051         unsigned long flags;
1052         ide_driver_t *drv;
1053         void __user *p = (void __user *)arg;
1054         int err = 0, (*setfunc)(ide_drive_t *, int);
1055         u8 *val;
1056
1057         switch (cmd) {
1058         case HDIO_GET_32BIT:        val = &drive->io_32bit;      goto read_val;
1059         case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
1060         case HDIO_GET_UNMASKINTR:   val = &drive->unmask;        goto read_val;
1061         case HDIO_GET_DMA:          val = &drive->using_dma;     goto read_val;
1062         case HDIO_SET_32BIT:        setfunc = set_io_32bit;      goto set_val;
1063         case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings;     goto set_val;
1064         case HDIO_SET_PIO_MODE:     setfunc = set_pio_mode;      goto set_val;
1065         case HDIO_SET_UNMASKINTR:   setfunc = set_unmaskirq;     goto set_val;
1066         case HDIO_SET_DMA:          setfunc = set_using_dma;     goto set_val;
1067         }
1068
1069         switch (cmd) {
1070                 case HDIO_OBSOLETE_IDENTITY:
1071                 case HDIO_GET_IDENTITY:
1072                         if (bdev != bdev->bd_contains)
1073                                 return -EINVAL;
1074                         if (drive->id_read == 0)
1075                                 return -ENOMSG;
1076                         if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
1077                                 return -EFAULT;
1078                         return 0;
1079
1080                 case HDIO_GET_NICE:
1081                         return put_user(drive->dsc_overlap      <<      IDE_NICE_DSC_OVERLAP    |
1082                                         drive->atapi_overlap    <<      IDE_NICE_ATAPI_OVERLAP  |
1083                                         drive->nice0            <<      IDE_NICE_0              |
1084                                         drive->nice1            <<      IDE_NICE_1              |
1085                                         drive->nice2            <<      IDE_NICE_2,
1086                                         (long __user *) arg);
1087
1088 #ifdef CONFIG_IDE_TASK_IOCTL
1089                 case HDIO_DRIVE_TASKFILE:
1090                         if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
1091                                 return -EACCES;
1092                         switch(drive->media) {
1093                                 case ide_disk:
1094                                         return ide_taskfile_ioctl(drive, cmd, arg);
1095                                 default:
1096                                         return -ENOMSG;
1097                         }
1098 #endif /* CONFIG_IDE_TASK_IOCTL */
1099
1100                 case HDIO_DRIVE_CMD:
1101                         if (!capable(CAP_SYS_RAWIO))
1102                                 return -EACCES;
1103                         return ide_cmd_ioctl(drive, cmd, arg);
1104
1105                 case HDIO_DRIVE_TASK:
1106                         if (!capable(CAP_SYS_RAWIO))
1107                                 return -EACCES;
1108                         return ide_task_ioctl(drive, cmd, arg);
1109
1110                 case HDIO_SCAN_HWIF:
1111                 {
1112                         hw_regs_t hw;
1113                         int args[3];
1114                         if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1115                         if (copy_from_user(args, p, 3 * sizeof(int)))
1116                                 return -EFAULT;
1117                         memset(&hw, 0, sizeof(hw));
1118                         ide_init_hwif_ports(&hw, (unsigned long) args[0],
1119                                             (unsigned long) args[1], NULL);
1120                         hw.irq = args[2];
1121                         if (ide_register_hw(&hw, 0, NULL) == -1)
1122                                 return -EIO;
1123                         return 0;
1124                 }
1125                 case HDIO_UNREGISTER_HWIF:
1126                         if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1127                         /* (arg > MAX_HWIFS) checked in function */
1128                         ide_unregister(arg);
1129                         return 0;
1130                 case HDIO_SET_NICE:
1131                         if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1132                         if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
1133                                 return -EPERM;
1134                         drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
1135                         drv = *(ide_driver_t **)bdev->bd_disk->private_data;
1136                         if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
1137                                 drive->dsc_overlap = 0;
1138                                 return -EPERM;
1139                         }
1140                         drive->nice1 = (arg >> IDE_NICE_1) & 1;
1141                         return 0;
1142                 case HDIO_DRIVE_RESET:
1143                 {
1144                         unsigned long flags;
1145                         if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1146
1147                         /*
1148                          *      Abort the current command on the
1149                          *      group if there is one, taking
1150                          *      care not to allow anything else
1151                          *      to be queued and to die on the
1152                          *      spot if we miss one somehow
1153                          */
1154
1155                         spin_lock_irqsave(&ide_lock, flags);
1156
1157                         if (HWGROUP(drive)->resetting) {
1158                                 spin_unlock_irqrestore(&ide_lock, flags);
1159                                 return -EBUSY;
1160                         }
1161
1162                         ide_abort(drive, "drive reset");
1163
1164                         BUG_ON(HWGROUP(drive)->handler);
1165
1166                         /* Ensure nothing gets queued after we
1167                            drop the lock. Reset will clear the busy */
1168
1169                         HWGROUP(drive)->busy = 1;
1170                         spin_unlock_irqrestore(&ide_lock, flags);
1171                         (void) ide_do_reset(drive);
1172
1173                         return 0;
1174                 }
1175
1176                 case CDROMEJECT:
1177                 case CDROMCLOSETRAY:
1178                         return scsi_cmd_ioctl(file, bdev->bd_disk->queue, bdev->bd_disk, cmd, p);
1179
1180                 case HDIO_GET_BUSSTATE:
1181                         if (!capable(CAP_SYS_ADMIN))
1182                                 return -EACCES;
1183                         if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
1184                                 return -EFAULT;
1185                         return 0;
1186
1187                 case HDIO_SET_BUSSTATE:
1188                         if (!capable(CAP_SYS_ADMIN))
1189                                 return -EACCES;
1190                         if (HWIF(drive)->busproc)
1191                                 return HWIF(drive)->busproc(drive, (int)arg);
1192                         return -EOPNOTSUPP;
1193                 default:
1194                         return -EINVAL;
1195         }
1196
1197 read_val:
1198         mutex_lock(&ide_setting_mtx);
1199         spin_lock_irqsave(&ide_lock, flags);
1200         err = *val;
1201         spin_unlock_irqrestore(&ide_lock, flags);
1202         mutex_unlock(&ide_setting_mtx);
1203         return err >= 0 ? put_user(err, (long __user *)arg) : err;
1204
1205 set_val:
1206         if (bdev != bdev->bd_contains)
1207                 err = -EINVAL;
1208         else {
1209                 if (!capable(CAP_SYS_ADMIN))
1210                         err = -EACCES;
1211                 else {
1212                         mutex_lock(&ide_setting_mtx);
1213                         err = setfunc(drive, arg);
1214                         mutex_unlock(&ide_setting_mtx);
1215                 }
1216         }
1217         return err;
1218 }
1219
1220 EXPORT_SYMBOL(generic_ide_ioctl);
1221
1222 /*
1223  * stridx() returns the offset of c within s,
1224  * or -1 if c is '\0' or not found within s.
1225  */
1226 static int __init stridx (const char *s, char c)
1227 {
1228         char *i = strchr(s, c);
1229         return (i && c) ? i - s : -1;
1230 }
1231
1232 /*
1233  * match_parm() does parsing for ide_setup():
1234  *
1235  * 1. the first char of s must be '='.
1236  * 2. if the remainder matches one of the supplied keywords,
1237  *     the index (1 based) of the keyword is negated and returned.
1238  * 3. if the remainder is a series of no more than max_vals numbers
1239  *     separated by commas, the numbers are saved in vals[] and a
1240  *     count of how many were saved is returned.  Base10 is assumed,
1241  *     and base16 is allowed when prefixed with "0x".
1242  * 4. otherwise, zero is returned.
1243  */
1244 static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals)
1245 {
1246         static const char *decimal = "0123456789";
1247         static const char *hex = "0123456789abcdef";
1248         int i, n;
1249
1250         if (*s++ == '=') {
1251                 /*
1252                  * Try matching against the supplied keywords,
1253                  * and return -(index+1) if we match one
1254                  */
1255                 if (keywords != NULL) {
1256                         for (i = 0; *keywords != NULL; ++i) {
1257                                 if (!strcmp(s, *keywords++))
1258                                         return -(i+1);
1259                         }
1260                 }
1261                 /*
1262                  * Look for a series of no more than "max_vals"
1263                  * numeric values separated by commas, in base10,
1264                  * or base16 when prefixed with "0x".
1265                  * Return a count of how many were found.
1266                  */
1267                 for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
1268                         vals[n] = i;
1269                         while ((i = stridx(decimal, *++s)) >= 0)
1270                                 vals[n] = (vals[n] * 10) + i;
1271                         if (*s == 'x' && !vals[n]) {
1272                                 while ((i = stridx(hex, *++s)) >= 0)
1273                                         vals[n] = (vals[n] * 0x10) + i;
1274                         }
1275                         if (++n == max_vals)
1276                                 break;
1277                         if (*s == ',' || *s == ';')
1278                                 ++s;
1279                 }
1280                 if (!*s)
1281                         return n;
1282         }
1283         return 0;       /* zero = nothing matched */
1284 }
1285
1286 #ifdef CONFIG_BLK_DEV_ALI14XX
1287 extern int probe_ali14xx;
1288 extern int ali14xx_init(void);
1289 #endif
1290 #ifdef CONFIG_BLK_DEV_UMC8672
1291 extern int probe_umc8672;
1292 extern int umc8672_init(void);
1293 #endif
1294 #ifdef CONFIG_BLK_DEV_DTC2278
1295 extern int probe_dtc2278;
1296 extern int dtc2278_init(void);
1297 #endif
1298 #ifdef CONFIG_BLK_DEV_HT6560B
1299 extern int probe_ht6560b;
1300 extern int ht6560b_init(void);
1301 #endif
1302 #ifdef CONFIG_BLK_DEV_QD65XX
1303 extern int probe_qd65xx;
1304 extern int qd65xx_init(void);
1305 #endif
1306
1307 static int __initdata is_chipset_set[MAX_HWIFS];
1308
1309 /*
1310  * ide_setup() gets called VERY EARLY during initialization,
1311  * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1312  *
1313  * Remember to update Documentation/ide.txt if you change something here.
1314  */
1315 static int __init ide_setup(char *s)
1316 {
1317         int i, vals[3];
1318         ide_hwif_t *hwif;
1319         ide_drive_t *drive;
1320         unsigned int hw, unit;
1321         const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
1322         const char max_hwif  = '0' + (MAX_HWIFS - 1);
1323
1324
1325         if (strncmp(s,"hd",2) == 0 && s[2] == '=')      /* hd= is for hd.c   */
1326                 return 0;                               /* driver and not us */
1327
1328         if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2))
1329                 return 0;
1330
1331         printk(KERN_INFO "ide_setup: %s", s);
1332         init_ide_data ();
1333
1334 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
1335         if (!strcmp(s, "ide=doubler")) {
1336                 extern int ide_doubler;
1337
1338                 printk(" : Enabled support for IDE doublers\n");
1339                 ide_doubler = 1;
1340                 return 1;
1341         }
1342 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1343
1344         if (!strcmp(s, "ide=nodma")) {
1345                 printk(" : Prevented DMA\n");
1346                 noautodma = 1;
1347                 return 1;
1348         }
1349
1350 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1351         if (!strcmp(s, "ide=reverse")) {
1352                 ide_scan_direction = 1;
1353                 printk(" : Enabled support for IDE inverse scan order.\n");
1354                 return 1;
1355         }
1356 #endif
1357
1358 #ifdef CONFIG_BLK_DEV_IDEACPI
1359         if (!strcmp(s, "ide=noacpi")) {
1360                 //printk(" : Disable IDE ACPI support.\n");
1361                 ide_noacpi = 1;
1362                 return 1;
1363         }
1364         if (!strcmp(s, "ide=acpigtf")) {
1365                 //printk(" : Enable IDE ACPI _GTF support.\n");
1366                 ide_noacpitfs = 0;
1367                 return 1;
1368         }
1369         if (!strcmp(s, "ide=acpionboot")) {
1370                 //printk(" : Call IDE ACPI methods on boot.\n");
1371                 ide_noacpionboot = 0;
1372                 return 1;
1373         }
1374 #endif /* CONFIG_BLK_DEV_IDEACPI */
1375
1376         /*
1377          * Look for drive options:  "hdx="
1378          */
1379         if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
1380                 const char *hd_words[] = {
1381                         "none", "noprobe", "nowerr", "cdrom", "minus5",
1382                         "autotune", "noautotune", "minus8", "swapdata", "bswap",
1383                         "noflush", "remap", "remap63", "scsi", NULL };
1384                 unit = s[2] - 'a';
1385                 hw   = unit / MAX_DRIVES;
1386                 unit = unit % MAX_DRIVES;
1387                 hwif = &ide_hwifs[hw];
1388                 drive = &hwif->drives[unit];
1389                 if (strncmp(s + 4, "ide-", 4) == 0) {
1390                         strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req));
1391                         goto done;
1392                 }
1393                 switch (match_parm(&s[3], hd_words, vals, 3)) {
1394                         case -1: /* "none" */
1395                         case -2: /* "noprobe" */
1396                                 drive->noprobe = 1;
1397                                 goto done;
1398                         case -3: /* "nowerr" */
1399                                 drive->bad_wstat = BAD_R_STAT;
1400                                 hwif->noprobe = 0;
1401                                 goto done;
1402                         case -4: /* "cdrom" */
1403                                 drive->present = 1;
1404                                 drive->media = ide_cdrom;
1405                                 /* an ATAPI device ignores DRDY */
1406                                 drive->ready_stat = 0;
1407                                 hwif->noprobe = 0;
1408                                 goto done;
1409                         case -6: /* "autotune" */
1410                                 drive->autotune = IDE_TUNE_AUTO;
1411                                 goto obsolete_option;
1412                         case -7: /* "noautotune" */
1413                                 drive->autotune = IDE_TUNE_NOAUTO;
1414                                 goto obsolete_option;
1415                         case -9: /* "swapdata" */
1416                         case -10: /* "bswap" */
1417                                 drive->bswap = 1;
1418                                 goto done;
1419                         case -11: /* noflush */
1420                                 drive->noflush = 1;
1421                                 goto done;
1422                         case -12: /* "remap" */
1423                                 drive->remap_0_to_1 = 1;
1424                                 goto done;
1425                         case -13: /* "remap63" */
1426                                 drive->sect0 = 63;
1427                                 goto done;
1428                         case -14: /* "scsi" */
1429                                 drive->scsi = 1;
1430                                 goto done;
1431                         case 3: /* cyl,head,sect */
1432                                 drive->media    = ide_disk;
1433                                 drive->ready_stat = READY_STAT;
1434                                 drive->cyl      = drive->bios_cyl  = vals[0];
1435                                 drive->head     = drive->bios_head = vals[1];
1436                                 drive->sect     = drive->bios_sect = vals[2];
1437                                 drive->present  = 1;
1438                                 drive->forced_geom = 1;
1439                                 hwif->noprobe = 0;
1440                                 goto done;
1441                         default:
1442                                 goto bad_option;
1443                 }
1444         }
1445
1446         if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
1447                 goto bad_option;
1448         /*
1449          * Look for bus speed option:  "idebus="
1450          */
1451         if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
1452                 if (match_parm(&s[6], NULL, vals, 1) != 1)
1453                         goto bad_option;
1454                 if (vals[0] >= 20 && vals[0] <= 66) {
1455                         idebus_parameter = vals[0];
1456                 } else
1457                         printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1458                 goto done;
1459         }
1460         /*
1461          * Look for interface options:  "idex="
1462          */
1463         if (s[3] >= '0' && s[3] <= max_hwif) {
1464                 /*
1465                  * Be VERY CAREFUL changing this: note hardcoded indexes below
1466                  * (-8, -9, -10) are reserved to ease the hardcoding.
1467                  */
1468                 static const char *ide_words[] = {
1469                         "noprobe", "serialize", "minus3", "minus4",
1470                         "reset", "dma", "ata66", "minus8", "minus9",
1471                         "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1472                         "dtc2278", "umc8672", "ali14xx", NULL };
1473                 hw = s[3] - '0';
1474                 hwif = &ide_hwifs[hw];
1475                 i = match_parm(&s[4], ide_words, vals, 3);
1476
1477                 /*
1478                  * Cryptic check to ensure chipset not already set for hwif.
1479                  * Note: we can't depend on hwif->chipset here.
1480                  */
1481                 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) {
1482                         /* chipset already specified */
1483                         if (is_chipset_set[hw])
1484                                 goto bad_option;
1485                         if (i > -18 && i <= -11) {
1486                                 /* these drivers are for "ide0=" only */
1487                                 if (hw != 0)
1488                                         goto bad_hwif;
1489                                 /* chipset already specified for 2nd port */
1490                                 if (is_chipset_set[hw+1])
1491                                         goto bad_option;
1492                         }
1493                         is_chipset_set[hw] = 1;
1494                         printk("\n");
1495                 }
1496
1497                 switch (i) {
1498 #ifdef CONFIG_BLK_DEV_ALI14XX
1499                         case -17: /* "ali14xx" */
1500                                 probe_ali14xx = 1;
1501                                 goto done;
1502 #endif
1503 #ifdef CONFIG_BLK_DEV_UMC8672
1504                         case -16: /* "umc8672" */
1505                                 probe_umc8672 = 1;
1506                                 goto done;
1507 #endif
1508 #ifdef CONFIG_BLK_DEV_DTC2278
1509                         case -15: /* "dtc2278" */
1510                                 probe_dtc2278 = 1;
1511                                 goto done;
1512 #endif
1513 #ifdef CONFIG_BLK_DEV_CMD640
1514                         case -14: /* "cmd640_vlb" */
1515                         {
1516                                 extern int cmd640_vlb; /* flag for cmd640.c */
1517                                 cmd640_vlb = 1;
1518                                 goto done;
1519                         }
1520 #endif
1521 #ifdef CONFIG_BLK_DEV_HT6560B
1522                         case -13: /* "ht6560b" */
1523                                 probe_ht6560b = 1;
1524                                 goto done;
1525 #endif
1526 #ifdef CONFIG_BLK_DEV_QD65XX
1527                         case -12: /* "qd65xx" */
1528                                 probe_qd65xx = 1;
1529                                 goto done;
1530 #endif
1531 #ifdef CONFIG_BLK_DEV_4DRIVES
1532                         case -11: /* "four" drives on one set of ports */
1533                         {
1534                                 ide_hwif_t *mate = &ide_hwifs[hw^1];
1535                                 mate->drives[0].select.all ^= 0x20;
1536                                 mate->drives[1].select.all ^= 0x20;
1537                                 hwif->chipset = mate->chipset = ide_4drives;
1538                                 mate->irq = hwif->irq;
1539                                 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports));
1540                                 hwif->mate = mate;
1541                                 mate->mate = hwif;
1542                                 hwif->serialized = mate->serialized = 1;
1543                                 goto obsolete_option;
1544                         }
1545 #endif /* CONFIG_BLK_DEV_4DRIVES */
1546                         case -10: /* minus10 */
1547                         case -9: /* minus9 */
1548                         case -8: /* minus8 */
1549                         case -4:
1550                         case -3:
1551                                 goto bad_option;
1552                         case -7: /* ata66 */
1553 #ifdef CONFIG_BLK_DEV_IDEPCI
1554                                 /*
1555                                  * Use ATA_CBL_PATA40_SHORT so drive side
1556                                  * cable detection is also overriden.
1557                                  */
1558                                 hwif->cbl = ATA_CBL_PATA40_SHORT;
1559                                 goto obsolete_option;
1560 #else
1561                                 goto bad_hwif;
1562 #endif
1563                         case -6: /* dma */
1564                                 hwif->autodma = 1;
1565                                 goto obsolete_option;
1566                         case -5: /* "reset" */
1567                                 hwif->reset = 1;
1568                                 goto obsolete_option;
1569                         case -2: /* "serialize" */
1570                                 hwif->mate = &ide_hwifs[hw^1];
1571                                 hwif->mate->mate = hwif;
1572                                 hwif->serialized = hwif->mate->serialized = 1;
1573                                 goto obsolete_option;
1574
1575                         case -1: /* "noprobe" */
1576                                 hwif->noprobe = 1;
1577                                 goto done;
1578
1579                         case 1: /* base */
1580                                 vals[1] = vals[0] + 0x206; /* default ctl */
1581                         case 2: /* base,ctl */
1582                                 vals[2] = 0;    /* default irq = probe for it */
1583                         case 3: /* base,ctl,irq */
1584                                 hwif->hw.irq = vals[2];
1585                                 ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq);
1586                                 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
1587                                 hwif->irq      = vals[2];
1588                                 hwif->noprobe  = 0;
1589                                 hwif->chipset  = ide_forced;
1590                                 goto obsolete_option;
1591
1592                         case 0: goto bad_option;
1593                         default:
1594                                 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
1595                                 return 1;
1596                 }
1597         }
1598 bad_option:
1599         printk(" -- BAD OPTION\n");
1600         return 1;
1601 obsolete_option:
1602         printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n");
1603         return 1;
1604 bad_hwif:
1605         printk("-- NOT SUPPORTED ON ide%d", hw);
1606 done:
1607         printk("\n");
1608         return 1;
1609 }
1610
1611 extern void __init pnpide_init(void);
1612 extern void __exit pnpide_exit(void);
1613 extern void __init h8300_ide_init(void);
1614
1615 /*
1616  * probe_for_hwifs() finds/initializes "known" IDE interfaces
1617  */
1618 static void __init probe_for_hwifs (void)
1619 {
1620 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1621         ide_scan_pcibus(ide_scan_direction);
1622 #endif
1623
1624 #ifdef CONFIG_ETRAX_IDE
1625         {
1626                 extern void init_e100_ide(void);
1627                 init_e100_ide();
1628         }
1629 #endif /* CONFIG_ETRAX_IDE */
1630 #ifdef CONFIG_BLK_DEV_CMD640
1631         {
1632                 extern void ide_probe_for_cmd640x(void);
1633                 ide_probe_for_cmd640x();
1634         }
1635 #endif /* CONFIG_BLK_DEV_CMD640 */
1636 #ifdef CONFIG_BLK_DEV_IDE_PMAC
1637         {
1638                 extern int pmac_ide_probe(void);
1639                 (void)pmac_ide_probe();
1640         }
1641 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
1642 #ifdef CONFIG_BLK_DEV_GAYLE
1643         {
1644                 extern void gayle_init(void);
1645                 gayle_init();
1646         }
1647 #endif /* CONFIG_BLK_DEV_GAYLE */
1648 #ifdef CONFIG_BLK_DEV_FALCON_IDE
1649         {
1650                 extern void falconide_init(void);
1651                 falconide_init();
1652         }
1653 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
1654 #ifdef CONFIG_BLK_DEV_MAC_IDE
1655         {
1656                 extern void macide_init(void);
1657                 macide_init();
1658         }
1659 #endif /* CONFIG_BLK_DEV_MAC_IDE */
1660 #ifdef CONFIG_BLK_DEV_Q40IDE
1661         {
1662                 extern void q40ide_init(void);
1663                 q40ide_init();
1664         }
1665 #endif /* CONFIG_BLK_DEV_Q40IDE */
1666 #ifdef CONFIG_BLK_DEV_BUDDHA
1667         {
1668                 extern void buddha_init(void);
1669                 buddha_init();
1670         }
1671 #endif /* CONFIG_BLK_DEV_BUDDHA */
1672 #ifdef CONFIG_BLK_DEV_IDEPNP
1673         pnpide_init();
1674 #endif
1675 #ifdef CONFIG_H8300
1676         h8300_ide_init();
1677 #endif
1678 }
1679
1680 /*
1681  * Probe module
1682  */
1683
1684 EXPORT_SYMBOL(ide_lock);
1685
1686 static int ide_bus_match(struct device *dev, struct device_driver *drv)
1687 {
1688         return 1;
1689 }
1690
1691 static char *media_string(ide_drive_t *drive)
1692 {
1693         switch (drive->media) {
1694         case ide_disk:
1695                 return "disk";
1696         case ide_cdrom:
1697                 return "cdrom";
1698         case ide_tape:
1699                 return "tape";
1700         case ide_floppy:
1701                 return "floppy";
1702         case ide_optical:
1703                 return "optical";
1704         default:
1705                 return "UNKNOWN";
1706         }
1707 }
1708
1709 static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf)
1710 {
1711         ide_drive_t *drive = to_ide_device(dev);
1712         return sprintf(buf, "%s\n", media_string(drive));
1713 }
1714
1715 static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf)
1716 {
1717         ide_drive_t *drive = to_ide_device(dev);
1718         return sprintf(buf, "%s\n", drive->name);
1719 }
1720
1721 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1722 {
1723         ide_drive_t *drive = to_ide_device(dev);
1724         return sprintf(buf, "ide:m-%s\n", media_string(drive));
1725 }
1726
1727 static struct device_attribute ide_dev_attrs[] = {
1728         __ATTR_RO(media),
1729         __ATTR_RO(drivename),
1730         __ATTR_RO(modalias),
1731         __ATTR_NULL
1732 };
1733
1734 static int ide_uevent(struct device *dev, char **envp, int num_envp,
1735                       char *buffer, int buffer_size)
1736 {
1737         ide_drive_t *drive = to_ide_device(dev);
1738         int i = 0;
1739         int length = 0;
1740
1741         add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
1742                        "MEDIA=%s", media_string(drive));
1743         add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
1744                        "DRIVENAME=%s", drive->name);
1745         add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
1746                        "MODALIAS=ide:m-%s", media_string(drive));
1747         envp[i] = NULL;
1748         return 0;
1749 }
1750
1751 static int generic_ide_probe(struct device *dev)
1752 {
1753         ide_drive_t *drive = to_ide_device(dev);
1754         ide_driver_t *drv = to_ide_driver(dev->driver);
1755
1756         return drv->probe ? drv->probe(drive) : -ENODEV;
1757 }
1758
1759 static int generic_ide_remove(struct device *dev)
1760 {
1761         ide_drive_t *drive = to_ide_device(dev);
1762         ide_driver_t *drv = to_ide_driver(dev->driver);
1763
1764         if (drv->remove)
1765                 drv->remove(drive);
1766
1767         return 0;
1768 }
1769
1770 static void generic_ide_shutdown(struct device *dev)
1771 {
1772         ide_drive_t *drive = to_ide_device(dev);
1773         ide_driver_t *drv = to_ide_driver(dev->driver);
1774
1775         if (dev->driver && drv->shutdown)
1776                 drv->shutdown(drive);
1777 }
1778
1779 struct bus_type ide_bus_type = {
1780         .name           = "ide",
1781         .match          = ide_bus_match,
1782         .uevent         = ide_uevent,
1783         .probe          = generic_ide_probe,
1784         .remove         = generic_ide_remove,
1785         .shutdown       = generic_ide_shutdown,
1786         .dev_attrs      = ide_dev_attrs,
1787         .suspend        = generic_ide_suspend,
1788         .resume         = generic_ide_resume,
1789 };
1790
1791 EXPORT_SYMBOL_GPL(ide_bus_type);
1792
1793 /*
1794  * This is gets invoked once during initialization, to set *everything* up
1795  */
1796 static int __init ide_init(void)
1797 {
1798         int ret;
1799
1800         printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n");
1801         system_bus_speed = ide_system_bus_speed();
1802
1803         ret = bus_register(&ide_bus_type);
1804         if (ret < 0) {
1805                 printk(KERN_WARNING "IDE: bus_register error: %d\n", ret);
1806                 return ret;
1807         }
1808
1809         init_ide_data();
1810
1811         proc_ide_create();
1812
1813 #ifdef CONFIG_BLK_DEV_ALI14XX
1814         if (probe_ali14xx)
1815                 (void)ali14xx_init();
1816 #endif
1817 #ifdef CONFIG_BLK_DEV_UMC8672
1818         if (probe_umc8672)
1819                 (void)umc8672_init();
1820 #endif
1821 #ifdef CONFIG_BLK_DEV_DTC2278
1822         if (probe_dtc2278)
1823                 (void)dtc2278_init();
1824 #endif
1825 #ifdef CONFIG_BLK_DEV_HT6560B
1826         if (probe_ht6560b)
1827                 (void)ht6560b_init();
1828 #endif
1829 #ifdef CONFIG_BLK_DEV_QD65XX
1830         if (probe_qd65xx)
1831                 (void)qd65xx_init();
1832 #endif
1833
1834         /* Probe for special PCI and other "known" interface chipsets. */
1835         probe_for_hwifs();
1836
1837         return 0;
1838 }
1839
1840 #ifdef MODULE
1841 static char *options = NULL;
1842 module_param(options, charp, 0);
1843 MODULE_LICENSE("GPL");
1844
1845 static void __init parse_options (char *line)
1846 {
1847         char *next = line;
1848
1849         if (line == NULL || !*line)
1850                 return;
1851         while ((line = next) != NULL) {
1852                 if ((next = strchr(line,' ')) != NULL)
1853                         *next++ = 0;
1854                 if (!ide_setup(line))
1855                         printk (KERN_INFO "Unknown option '%s'\n", line);
1856         }
1857 }
1858
1859 int __init init_module (void)
1860 {
1861         parse_options(options);
1862         return ide_init();
1863 }
1864
1865 void __exit cleanup_module (void)
1866 {
1867         int index;
1868
1869         for (index = 0; index < MAX_HWIFS; ++index)
1870                 ide_unregister(index);
1871
1872 #ifdef CONFIG_BLK_DEV_IDEPNP
1873         pnpide_exit();
1874 #endif
1875
1876         proc_ide_destroy();
1877
1878         bus_unregister(&ide_bus_type);
1879 }
1880
1881 #else /* !MODULE */
1882
1883 __setup("", ide_setup);
1884
1885 module_init(ide_init);
1886
1887 #endif /* MODULE */