drivers/ide/Kconfig

   1 #
   2 # IDE ATA ATAPI Block device driver configuration
   3 #
   4 # Andre Hedrick <andre@linux-ide.org>
   5 #
   6
   7 menuconfig IDE
   8         tristate "ATA/ATAPI/MFM/RLL support"
   9         depends on BLOCK
  10         depends on HAS_IOMEM
  11         ---help---
  12           If you say Y here, your kernel will be able to manage low cost mass
  13           storage units such as ATA/(E)IDE and ATAPI units. The most common
  14           cases are IDE hard drives and ATAPI CD-ROM drives.
  15
  16           If your system is pure SCSI and doesn't use these interfaces, you
  17           can say N here.
  18
  19           Integrated Disk Electronics (IDE aka ATA-1) is a connecting standard
  20           for mass storage units such as hard disks. It was designed by
  21           Western Digital and Compaq Computer in 1984. It was then named
  22           ST506. Quite a number of disks use the IDE interface.
  23
  24           AT Attachment (ATA) is the superset of the IDE specifications.
  25           ST506 was also called ATA-1.
  26
  27           Fast-IDE is ATA-2 (also named Fast ATA), Enhanced IDE (EIDE) is
  28           ATA-3. It provides support for larger disks (up to 8.4GB by means of
  29           the LBA standard), more disks (4 instead of 2) and for other mass
  30           storage units such as tapes and cdrom. UDMA/33 (aka UltraDMA/33) is
  31           ATA-4 and provides faster (and more CPU friendly) transfer modes
  32           than previous PIO (Programmed processor Input/Output) from previous
  33           ATA/IDE standards by means of fast DMA controllers.
  34
  35           ATA Packet Interface (ATAPI) is a protocol used by EIDE tape and
  36           CD-ROM drives, similar in many respects to the SCSI protocol.
  37
  38           SMART IDE (Self Monitoring, Analysis and Reporting Technology) was
  39           designed in order to prevent data corruption and disk crash by
  40           detecting pre hardware failure conditions (heat, access time, and
  41           the like...). Disks built since June 1995 may follow this standard.
  42           The kernel itself doesn't manage this; however there are quite a
  43           number of user programs such as smart that can query the status of
  44           SMART parameters from disk drives.
  45
  46           To compile this driver as a module, choose M here: the
  47           module will be called ide.
  48
  49           For further information, please read <file:Documentation/ide.txt>.
  50
  51           If unsure, say Y.
  52
  53 if IDE
  54
  55 config IDE_MAX_HWIFS
  56         int "Max IDE interfaces"
  57         depends on ALPHA || SUPERH || IA64 || EMBEDDED
  58         range 1 10
  59         default 4
  60         help
  61           This is the maximum number of IDE hardware interfaces that will
  62           be supported by the driver. Make sure it is at least as high as
  63           the number of IDE interfaces in your system.
  64
  65 config BLK_DEV_IDE
  66         tristate "Enhanced IDE/MFM/RLL disk/cdrom/tape/floppy support"
  67         ---help---
  68           If you say Y here, you will use the full-featured IDE driver to
  69           control up to ten ATA/IDE interfaces, each being able to serve a
  70           "master" and a "slave" device, for a total of up to twenty ATA/IDE
  71           disk/cdrom/tape/floppy drives.
  72
  73           Useful information about large (>540 MB) IDE disks, multiple
  74           interfaces, what to do if ATA/IDE devices are not automatically
  75           detected, sound card ATA/IDE ports, module support, and other
  76           topics, is contained in <file:Documentation/ide.txt>. For detailed
  77           information about hard drives, consult the Disk-HOWTO and the
  78           Multi-Disk-HOWTO, available from
  79           <http://www.tldp.org/docs.html#howto>.
  80
  81           To fine-tune ATA/IDE drive/interface parameters for improved
  82           performance, look for the hdparm package at
  83           <ftp://ibiblio.org/pub/Linux/system/hardware/>.
  84
  85           To compile this driver as a module, choose M here and read
  86           <file:Documentation/ide.txt>. The module will be called ide-mod.
  87           Do not compile this driver as a module if your root file system (the
  88           one containing the directory /) is located on an IDE device.
  89
  90           If you have one or more IDE drives, say Y or M here. If your system
  91           has no IDE drives, or if memory requirements are really tight, you
  92           could say N here, and select the "Old hard disk driver" below
  93           instead to save about 13 KB of memory in the kernel.
  94
  95 if BLK_DEV_IDE
  96
  97 comment "Please see Documentation/ide.txt for help/info on IDE drives"
  98
  99 config BLK_DEV_IDE_SATA
 100         bool "Support for SATA (deprecated; conflicts with libata SATA driver)"
 101         default n
 102         ---help---
 103           There are two drivers for Serial ATA controllers.
 104
 105           The main driver, "libata", uses the SCSI subsystem
 106           and supports most modern SATA controllers. In order to use it
 107           you may take a look at "Serial ATA (prod) and Parallel ATA
 108           (experimental) drivers".
 109
 110           The IDE driver (which you are currently configuring) supports
 111           a few first-generation SATA controllers.
 112
 113           In order to eliminate conflicts between the two subsystems,
 114           this config option enables the IDE driver's SATA support.
 115           Normally this is disabled, as it is preferred that libata
 116           supports SATA controllers, and this (IDE) driver supports
 117           PATA controllers.
 118
 119           If unsure, say N.
 120
 121 config BLK_DEV_HD_IDE
 122         bool "Use old disk-only driver on primary interface"
 123         depends on (X86 || SH_MPC1211)
 124         ---help---
 125           There are two drivers for MFM/RLL/IDE disks.  Most people use just
 126           the new enhanced driver by itself.  This option however installs the
 127           old hard disk driver to control the primary IDE/disk interface in
 128           the system, leaving the new enhanced IDE driver to take care of only
 129           the 2nd/3rd/4th IDE interfaces.  Doing this will prevent you from
 130           having an IDE/ATAPI CD-ROM or tape drive connected to the primary
 131           IDE interface.  Choosing this option may be useful for older systems
 132           which have MFM/RLL/ESDI controller+drives at the primary port
 133           address (0x1f0), along with IDE drives at the secondary/3rd/4th port
 134           addresses.
 135
 136           Normally, just say N here; you will then use the new driver for all
 137           4 interfaces.
 138
 139 config BLK_DEV_IDEDISK
 140         tristate "Include IDE/ATA-2 DISK support"
 141         ---help---
 142           This will include enhanced support for MFM/RLL/IDE hard disks.  If
 143           you have a MFM/RLL/IDE disk, and there is no special reason to use
 144           the old hard disk driver instead, say Y.  If you have an SCSI-only
 145           system, you can say N here.
 146
 147           To compile this driver as a module, choose M here: the
 148           module will be called ide-disk.
 149           Do not compile this driver as a module if your root file system
 150           (the one containing the directory /) is located on the IDE disk.
 151
 152           If unsure, say Y.
 153
 154 config IDEDISK_MULTI_MODE
 155         bool "Use multiple sector mode for Programmed Input/Output by default"
 156         help
 157           This setting is irrelevant for most IDE disks, with direct memory
 158           access, to which multiple sector mode does not apply. Multiple sector
 159           mode is a feature of most modern IDE hard drives, permitting the
 160           transfer of multiple sectors per Programmed Input/Output interrupt,
 161           rather than the usual one sector per interrupt. When this feature is
 162           enabled, it can reduce operating system overhead for disk Programmed
 163           Input/Output. On some systems, it also can increase the data
 164           throughput of Programmed Input/Output. Some drives, however, seemed
 165           to run slower with multiple sector mode enabled. Some drives claimed
 166           to support multiple sector mode, but lost data at some settings.
 167           Under rare circumstances, such failures could result in massive
 168           filesystem corruption.
 169
 170           If you get the following error, try to say Y here:
 171
 172           hda: set_multmode: status=0x51 { DriveReady SeekComplete Error }
 173           hda: set_multmode: error=0x04 { DriveStatusError }
 174
 175           If in doubt, say N.
 176
 177 config BLK_DEV_IDECS
 178         tristate "PCMCIA IDE support"
 179         depends on PCMCIA
 180         help
 181           Support for Compact Flash cards, outboard IDE disks, tape drives,
 182           and CD-ROM drives connected through a PCMCIA card.
 183
 184 config BLK_DEV_DELKIN
 185         tristate "Cardbus IDE support (Delkin/ASKA/Workbit)"
 186         depends on CARDBUS && PCI
 187         help
 188           Support for Delkin, ASKA, and Workbit Cardbus CompactFlash
 189           Adapters.  This may also work for similar SD and XD adapters.
 190
 191 config BLK_DEV_IDECD
 192         tristate "Include IDE/ATAPI CDROM support"
 193         ---help---
 194           If you have a CD-ROM drive using the ATAPI protocol, say Y. ATAPI is
 195           a newer protocol used by IDE CD-ROM and TAPE drives, similar to the
 196           SCSI protocol. Most new CD-ROM drives use ATAPI, including the
 197           NEC-260, Mitsumi FX400, Sony 55E, and just about all non-SCSI
 198           double(2X) or better speed drives.
 199
 200           If you say Y here, the CD-ROM drive will be identified at boot time
 201           along with other IDE devices, as "hdb" or "hdc", or something
 202           similar (check the boot messages with dmesg). If this is your only
 203           CD-ROM drive, you can say N to all other CD-ROM options, but be sure
 204           to say Y or M to "ISO 9660 CD-ROM file system support".
 205
 206           To compile this driver as a module, choose M here: the
 207           module will be called ide-cd.
 208
 209 config BLK_DEV_IDETAPE
 210         tristate "Include IDE/ATAPI TAPE support (EXPERIMENTAL)"
 211         depends on EXPERIMENTAL
 212         help
 213           If you have an IDE tape drive using the ATAPI protocol, say Y.
 214           ATAPI is a newer protocol used by IDE tape and CD-ROM drives,
 215           similar to the SCSI protocol.  If you have an SCSI tape drive
 216           however, you can say N here.
 217
 218           You should also say Y if you have an OnStream DI-30 tape drive; this
 219           will not work with the SCSI protocol, until there is support for the
 220           SC-30 and SC-50 versions.
 221
 222           If you say Y here, the tape drive will be identified at boot time
 223           along with other IDE devices, as "hdb" or "hdc", or something
 224           similar, and will be mapped to a character device such as "ht0"
 225           (check the boot messages with dmesg).  Be sure to consult the
 226           <file:drivers/ide/ide-tape.c> and <file:Documentation/ide.txt> files
 227           for usage information.
 228
 229           To compile this driver as a module, choose M here: the
 230           module will be called ide-tape.
 231
 232 config BLK_DEV_IDEFLOPPY
 233         tristate "Include IDE/ATAPI FLOPPY support"
 234         ---help---
 235           If you have an IDE floppy drive which uses the ATAPI protocol,
 236           answer Y.  ATAPI is a newer protocol used by IDE CD-ROM/tape/floppy
 237           drives, similar to the SCSI protocol.
 238
 239           The LS-120 and the IDE/ATAPI Iomega ZIP drive are also supported by
 240           this driver. For information about jumper settings and the question
 241           of when a ZIP drive uses a partition table, see
 242           <http://www.win.tue.nl/~aeb/linux/zip/zip-1.html>.
 243           (ATAPI PD-CD/CDR drives are not supported by this driver; support
 244           for PD-CD/CDR drives is available if you answer Y to
 245           "SCSI emulation support", below).
 246
 247           If you say Y here, the FLOPPY drive will be identified along with
 248           other IDE devices, as "hdb" or "hdc", or something similar (check
 249           the boot messages with dmesg).
 250
 251           To compile this driver as a module, choose M here: the
 252           module will be called ide-floppy.
 253
 254 config BLK_DEV_IDESCSI
 255         tristate "SCSI emulation support"
 256         depends on SCSI
 257         ---help---
 258           WARNING: ide-scsi is no longer needed for cd writing applications!
 259           The 2.6 kernel supports direct writing to ide-cd, which eliminates
 260           the need for ide-scsi + the entire scsi stack just for writing a
 261           cd. The new method is more efficient in every way.
 262
 263           This will provide SCSI host adapter emulation for IDE ATAPI devices,
 264           and will allow you to use a SCSI device driver instead of a native
 265           ATAPI driver.
 266
 267           This is useful if you have an ATAPI device for which no native
 268           driver has been written (for example, an ATAPI PD-CD drive);
 269           you can then use this emulation together with an appropriate SCSI
 270           device driver. In order to do this, say Y here and to "SCSI support"
 271           and "SCSI generic support", below. You must then provide the kernel
 272           command line "hdx=ide-scsi" (try "man bootparam" or see the
 273           documentation of your boot loader (lilo or loadlin) about how to
 274           pass options to the kernel at boot time) for devices if you want the
 275           native EIDE sub-drivers to skip over the native support, so that
 276           this SCSI emulation can be used instead.
 277
 278           Note that this option does NOT allow you to attach SCSI devices to a
 279           box that doesn't have a SCSI host adapter installed.
 280
 281           If both this SCSI emulation and native ATAPI support are compiled
 282           into the kernel, the native support will be used.
 283
 284 config BLK_DEV_IDEACPI
 285         bool "IDE ACPI support"
 286         depends on ACPI
 287         ---help---
 288           Implement ACPI support for generic IDE devices. On modern
 289           machines ACPI support is required to properly handle ACPI S3 states.
 290
 291 config IDE_TASK_IOCTL
 292         bool "IDE Taskfile Access"
 293         help
 294           This is a direct raw access to the media.  It is a complex but
 295           elegant solution to test and validate the domain of the hardware and
 296           perform below the driver data recovery if needed.  This is the most
 297           basic form of media-forensics.
 298
 299           If you are unsure, say N here.
 300
 301 config IDE_PROC_FS
 302         bool "legacy /proc/ide/ support"
 303         depends on IDE && PROC_FS
 304         default y
 305         help
 306           This option enables support for the various files in
 307           /proc/ide.  In Linux 2.6 this has been superseded by
 308           files in sysfs but many legacy applications rely on this.
 309
 310           If unsure say Y.
 311
 312 comment "IDE chipset support/bugfixes"
 313
 314 config IDE_GENERIC
 315         tristate "generic/default IDE chipset support"
 316         help
 317           If unsure, say N.
 318
 319 config BLK_DEV_PLATFORM
 320         tristate "Platform driver for IDE interfaces"
 321         help
 322           This is the platform IDE driver, used mostly for Memory Mapped
 323           IDE devices, like Compact Flashes running in True IDE mode.
 324
 325           If unsure, say N.
 326
 327 config BLK_DEV_CMD640
 328         bool "CMD640 chipset bugfix/support"
 329         depends on X86
 330         ---help---
 331           The CMD-Technologies CMD640 IDE chip is used on many common 486 and
 332           Pentium motherboards, usually in combination with a "Neptune" or
 333           "SiS" chipset. Unfortunately, it has a number of rather nasty
 334           design flaws that can cause severe data corruption under many common
 335           conditions. Say Y here to include code which tries to automatically
 336           detect and correct the problems under Linux. This option also
 337           enables access to the secondary IDE ports in some CMD640 based
 338           systems.
 339
 340           This driver will work automatically in PCI based systems (most new
 341           systems have PCI slots). But if your system uses VESA local bus
 342           (VLB) instead of PCI, you must also supply a kernel boot parameter
 343           to enable the CMD640 bugfix/support: "ide0=cmd640_vlb". (Try "man
 344           bootparam" or see the documentation of your boot loader about how to
 345           pass options to the kernel.)
 346
 347           The CMD640 chip is also used on add-in cards by Acculogic, and on
 348           the "CSA-6400E PCI to IDE controller" that some people have. For
 349           details, read <file:Documentation/ide.txt>.
 350
 351 config BLK_DEV_CMD640_ENHANCED
 352         bool "CMD640 enhanced support"
 353         depends on BLK_DEV_CMD640
 354         help
 355           This option includes support for setting/autotuning PIO modes and
 356           prefetch on CMD640 IDE interfaces.  For details, read
 357           <file:Documentation/ide.txt>. If you have a CMD640 IDE interface
 358           and your BIOS does not already do this for you, then say Y here.
 359           Otherwise say N.
 360
 361 config BLK_DEV_IDEPNP
 362         bool "PNP EIDE support"
 363         depends on PNP
 364         select IDE_GENERIC
 365         help
 366           If you have a PnP (Plug and Play) compatible EIDE card and
 367           would like the kernel to automatically detect and activate
 368           it, say Y here.
 369
 370 if PCI
 371
 372 comment "PCI IDE chipsets support"
 373
 374 config BLK_DEV_IDEPCI
 375         bool
 376
 377 config IDEPCI_SHARE_IRQ
 378         bool "Sharing PCI IDE interrupts support"
 379         depends on BLK_DEV_IDEPCI
 380         help
 381           Some ATA/IDE chipsets have hardware support which allows for
 382           sharing a single IRQ with other cards. To enable support for
 383           this in the ATA/IDE driver, say Y here.
 384
 385           It is safe to say Y to this question, in most cases.
 386           If unsure, say N.
 387
 388 config IDEPCI_PCIBUS_ORDER
 389         def_bool BLK_DEV_IDE=y && BLK_DEV_IDEPCI
 390
 391 # TODO: split it on per host driver config options (or module parameters)
 392 config BLK_DEV_OFFBOARD
 393         bool "Boot off-board chipsets first support (DEPRECATED)"
 394         depends on BLK_DEV_IDEPCI && (BLK_DEV_AEC62XX || BLK_DEV_GENERIC || BLK_DEV_HPT34X || BLK_DEV_HPT366 || BLK_DEV_PDC202XX_NEW || BLK_DEV_PDC202XX_OLD || BLK_DEV_TC86C001)
 395         help
 396           Normally, IDE controllers built into the motherboard (on-board
 397           controllers) are assigned to ide0 and ide1 while those on add-in PCI
 398           cards (off-board controllers) are relegated to ide2 and ide3.
 399           Answering Y here will allow you to reverse the situation, with
 400           off-board controllers on ide0/1 and on-board controllers on ide2/3.
 401           This can improve the usability of some boot managers such as lilo
 402           when booting from a drive on an off-board controller.
 403
 404           If you say Y here, and you actually want to reverse the device scan
 405           order as explained above, you also need to issue the kernel command
 406           line option "ide=reverse". (Try "man bootparam" or see the
 407           documentation of your boot loader (lilo or loadlin) about how to
 408           pass options to the kernel at boot time.)
 409
 410           Note that, if you do this, the order of the hd* devices will be
 411           rearranged which may require modification of fstab and other files.
 412
 413           Please also note that this method of assuring stable naming of
 414           IDE devices is unreliable and use other means for achieving it
 415           (i.e. udev).
 416
 417           If in doubt, say N.
 418
 419 config BLK_DEV_GENERIC
 420         tristate "Generic PCI IDE Chipset Support"
 421         select BLK_DEV_IDEPCI
 422         help
 423           This option provides generic support for various PCI IDE Chipsets
 424           which otherwise might not be supported.
 425
 426 config BLK_DEV_OPTI621
 427         tristate "OPTi 82C621 chipset enhanced support (EXPERIMENTAL)"
 428         depends on EXPERIMENTAL
 429         select BLK_DEV_IDEPCI
 430         help
 431           This is a driver for the OPTi 82C621 EIDE controller.
 432           Please read the comments at the top of <file:drivers/ide/pci/opti621.c>.
 433
 434 config BLK_DEV_RZ1000
 435         tristate "RZ1000 chipset bugfix/support"
 436         depends on X86
 437         select BLK_DEV_IDEPCI
 438         help
 439           The PC-Technologies RZ1000 IDE chip is used on many common 486 and
 440           Pentium motherboards, usually along with the "Neptune" chipset.
 441           Unfortunately, it has a rather nasty design flaw that can cause
 442           severe data corruption under many conditions. Say Y here to include
 443           code which automatically detects and corrects the problem under
 444           Linux. This may slow disk throughput by a few percent, but at least
 445           things will operate 100% reliably.
 446
 447 config BLK_DEV_IDEDMA_PCI
 448         bool
 449         select BLK_DEV_IDEPCI
 450
 451 config BLK_DEV_AEC62XX
 452         tristate "AEC62XX chipset support"
 453         select BLK_DEV_IDEDMA_PCI
 454         help
 455           This driver adds explicit support for Acard AEC62xx (Artop ATP8xx)
 456           IDE controllers. This allows the kernel to change PIO, DMA and UDMA
 457           speeds and to configure the chip to optimum performance.
 458
 459 config BLK_DEV_ALI15X3
 460         tristate "ALI M15x3 chipset support"
 461         select BLK_DEV_IDEDMA_PCI
 462         help
 463           This driver ensures (U)DMA support for ALI 1533, 1543 and 1543C
 464           onboard chipsets.  It also tests for Simplex mode and enables
 465           normal dual channel support.
 466
 467           If you say Y here, you also need to say Y to "Use DMA by default
 468           when available", above.  Please read the comments at the top of
 469           <file:drivers/ide/pci/alim15x3.c>.
 470
 471           If unsure, say N.
 472
 473 config WDC_ALI15X3
 474         bool "ALI M15x3 WDC support (DANGEROUS)"
 475         depends on BLK_DEV_ALI15X3
 476         ---help---
 477           This allows for UltraDMA support for WDC drives that ignore CRC
 478           checking. You are a fool for enabling this option, but there have
 479           been requests. DO NOT COMPLAIN IF YOUR DRIVE HAS FS CORRUPTION, IF
 480           YOU ENABLE THIS! No one will listen, just laugh for ignoring this
 481           SERIOUS WARNING.
 482
 483           Using this option can allow WDC drives to run at ATA-4/5 transfer
 484           rates with only an ATA-2 support structure.
 485
 486           SAY N!
 487
 488 config BLK_DEV_AMD74XX
 489         tristate "AMD and nVidia IDE support"
 490         depends on !ARM
 491         select BLK_DEV_IDEDMA_PCI
 492         help
 493           This driver adds explicit support for AMD-7xx and AMD-8111 chips
 494           and also for the nVidia nForce chip.  This allows the kernel to
 495           change PIO, DMA and UDMA speeds and to configure the chip to
 496           optimum performance.
 497
 498 config BLK_DEV_ATIIXP
 499         tristate "ATI IXP chipset IDE support"
 500         depends on X86
 501         select BLK_DEV_IDEDMA_PCI
 502         help
 503           This driver adds explicit support for ATI IXP chipset.
 504           This allows the kernel to change PIO, DMA and UDMA speeds
 505           and to configure the chip to optimum performance.
 506
 507           Say Y here if you have an ATI IXP chipset IDE controller.
 508
 509 config BLK_DEV_CMD64X
 510         tristate "CMD64{3|6|8|9} chipset support"
 511         select BLK_DEV_IDEDMA_PCI
 512         help
 513           Say Y here if you have an IDE controller which uses any of these
 514           chipsets: CMD643, CMD646, or CMD648.
 515
 516 config BLK_DEV_TRIFLEX
 517         tristate "Compaq Triflex IDE support"
 518         select BLK_DEV_IDEDMA_PCI
 519         help
 520           Say Y here if you have a Compaq Triflex IDE controller, such
 521           as those commonly found on Compaq Pentium-Pro systems
 522
 523 config BLK_DEV_CY82C693
 524         tristate "CY82C693 chipset support"
 525         select BLK_DEV_IDEDMA_PCI
 526         help
 527           This driver adds detection and support for the CY82C693 chipset
 528           used on Digital's PC-Alpha 164SX boards.
 529
 530           If you say Y here, you need to say Y to "Use DMA by default
 531           when available" as well.
 532
 533 config BLK_DEV_CS5520
 534         tristate "Cyrix CS5510/20 MediaGX chipset support (VERY EXPERIMENTAL)"
 535         depends on EXPERIMENTAL
 536         select BLK_DEV_IDEDMA_PCI
 537         help
 538           Include support for PIO tuning and virtual DMA on the Cyrix MediaGX
 539           5510/5520 chipset. This will automatically be detected and
 540           configured if found.
 541
 542           It is safe to say Y to this question.
 543
 544 config BLK_DEV_CS5530
 545         tristate "Cyrix/National Semiconductor CS5530 MediaGX chipset support"
 546         select BLK_DEV_IDEDMA_PCI
 547         help
 548           Include support for UDMA on the Cyrix MediaGX 5530 chipset. This
 549           will automatically be detected and configured if found.
 550
 551           It is safe to say Y to this question.
 552
 553 config BLK_DEV_CS5535
 554         tristate "AMD CS5535 chipset support"
 555         depends on X86 && !X86_64
 556         select BLK_DEV_IDEDMA_PCI
 557         help
 558           Include support for UDMA on the NSC/AMD CS5535 companion chipset.
 559           This will automatically be detected and configured if found.
 560
 561           It is safe to say Y to this question.
 562
 563 config BLK_DEV_HPT34X
 564         tristate "HPT34X chipset support"
 565         select BLK_DEV_IDEDMA_PCI
 566         help
 567           This driver adds up to 4 more EIDE devices sharing a single
 568           interrupt. The HPT343 chipset in its current form is a non-bootable
 569           controller; the HPT345/HPT363 chipset is a bootable (needs BIOS FIX)
 570           PCI UDMA controllers. This driver requires dynamic tuning of the
 571           chipset during the ide-probe at boot time. It is reported to support
 572           DVD II drives, by the manufacturer.
 573
 574 config HPT34X_AUTODMA
 575         bool "HPT34X AUTODMA support (EXPERIMENTAL)"
 576         depends on BLK_DEV_HPT34X && EXPERIMENTAL
 577         help
 578           This is a dangerous thing to attempt currently! Please read the
 579           comments at the top of <file:drivers/ide/pci/hpt34x.c>.  If you say Y
 580           here, then say Y to "Use DMA by default when available" as well.
 581
 582           If unsure, say N.
 583
 584 config BLK_DEV_HPT366
 585         tristate "HPT36X/37X chipset support"
 586         select BLK_DEV_IDEDMA_PCI
 587         help
 588           HPT366 is an Ultra DMA chipset for ATA-66.
 589           HPT368 is an Ultra DMA chipset for ATA-66 RAID Based.
 590           HPT370 is an Ultra DMA chipset for ATA-100.
 591           HPT372 is an Ultra DMA chipset for ATA-100.
 592           HPT374 is an Ultra DMA chipset for ATA-100.
 593
 594           This driver adds up to 4 more EIDE devices sharing a single
 595           interrupt.
 596
 597           The HPT366 chipset in its current form is bootable. One solution
 598           for this problem are special LILO commands for redirecting the
 599           reference to device 0x80. The other solution is to say Y to "Boot
 600           off-board chipsets first support" (CONFIG_BLK_DEV_OFFBOARD) unless
 601           your mother board has the chipset natively mounted. Regardless one
 602           should use the fore mentioned option and call at LILO or include
 603           "ide=reverse" in LILO's append-line.
 604
 605           This driver requires dynamic tuning of the chipset during the
 606           ide-probe at boot. It is reported to support DVD II drives, by the
 607           manufacturer.
 608
 609 config BLK_DEV_JMICRON
 610         tristate "JMicron JMB36x support"
 611         select BLK_DEV_IDEDMA_PCI
 612         help
 613           Basic support for the JMicron ATA controllers. For full support
 614           use the libata drivers.
 615
 616 config BLK_DEV_SC1200
 617         tristate "National SCx200 chipset support"
 618         select BLK_DEV_IDEDMA_PCI
 619         help
 620           This driver adds support for the built in IDE on the National
 621           SCx200 series of embedded x86 "Geode" systems
 622
 623 config BLK_DEV_PIIX
 624         tristate "Intel PIIXn chipsets support"
 625         select BLK_DEV_IDEDMA_PCI
 626         help
 627           This driver adds explicit support for Intel PIIX and ICH chips
 628           and also for the Efar Victory66 (slc90e66) chip.  This allows
 629           the kernel to change PIO, DMA and UDMA speeds and to configure
 630           the chip to optimum performance.
 631
 632 config BLK_DEV_IT8213
 633         tristate "IT8213 IDE support"
 634         select BLK_DEV_IDEDMA_PCI
 635         help
 636          This driver adds support for the ITE 8213 IDE controller.
 637
 638 config BLK_DEV_IT821X
 639         tristate "IT821X IDE support"
 640         select BLK_DEV_IDEDMA_PCI
 641         help
 642           This driver adds support for the ITE 8211 IDE controller and the
 643           IT 8212 IDE RAID controller in both RAID and pass-through mode.
 644
 645 config BLK_DEV_NS87415
 646         tristate "NS87415 chipset support"
 647         select BLK_DEV_IDEDMA_PCI
 648         help
 649           This driver adds detection and support for the NS87415 chip
 650           (used mainly on SPARC64 and PA-RISC machines).
 651
 652           Please read the comments at the top of <file:drivers/ide/pci/ns87415.c>.
 653
 654 config BLK_DEV_PDC202XX_OLD
 655         tristate "PROMISE PDC202{46|62|65|67} support"
 656         select BLK_DEV_IDEDMA_PCI
 657         help
 658           Promise Ultra33 or PDC20246
 659           Promise Ultra66 or PDC20262
 660           Promise Ultra100 or PDC20265/PDC20267/PDC20268
 661
 662           This driver adds up to 4 more EIDE devices sharing a single
 663           interrupt. This add-on card is a bootable PCI UDMA controller. Since
 664           multiple cards can be installed and there are BIOS ROM problems that
 665           happen if the BIOS revisions of all installed cards (three-max) do
 666           not match, the driver attempts to do dynamic tuning of the chipset
 667           at boot-time for max-speed.  Ultra33 BIOS 1.25 or newer is required
 668           for more than one card. This card may require that you say Y to
 669           "Special UDMA Feature".
 670
 671           If you say Y here, you need to say Y to "Use DMA by default when
 672           available" as well.
 673
 674           Please read the comments at the top of
 675           <file:drivers/ide/pci/pdc202xx_old.c>.
 676
 677           If unsure, say N.
 678
 679 config PDC202XX_BURST
 680         bool "Special UDMA Feature"
 681         depends on BLK_DEV_PDC202XX_OLD
 682         help
 683           This option causes the pdc202xx driver to enable UDMA modes on the
 684           PDC202xx even when the PDC202xx BIOS has not done so.
 685
 686           It was originally designed for the PDC20246/Ultra33, whose BIOS will
 687           only setup UDMA on the first two PDC20246 cards.  It has also been
 688           used successfully on a PDC20265/Ultra100, allowing use of UDMA modes
 689           when the PDC20265 BIOS has been disabled (for faster boot up).
 690
 691           Please read the comments at the top of
 692           <file:drivers/ide/pci/pdc202xx_old.c>.
 693
 694           If unsure, say N.
 695
 696 config BLK_DEV_PDC202XX_NEW
 697         tristate "PROMISE PDC202{68|69|70|71|75|76|77} support"
 698         select BLK_DEV_IDEDMA_PCI
 699
 700 config BLK_DEV_SVWKS
 701         tristate "ServerWorks OSB4/CSB5/CSB6 chipsets support"
 702         select BLK_DEV_IDEDMA_PCI
 703         help
 704           This driver adds PIO/(U)DMA support for the ServerWorks OSB4/CSB5
 705           chipsets.
 706
 707 config BLK_DEV_SGIIOC4
 708         tristate "Silicon Graphics IOC4 chipset ATA/ATAPI support"
 709         depends on (IA64_SGI_SN2 || IA64_GENERIC) && SGI_IOC4
 710         select IDEPCI_SHARE_IRQ
 711         select BLK_DEV_IDEDMA_PCI
 712         help
 713           This driver adds PIO & MultiMode DMA-2 support for the SGI IOC4
 714           chipset, which has one channel and can support two devices.
 715           Please say Y here if you have an Altix System from SGI.
 716
 717 config BLK_DEV_SIIMAGE
 718         tristate "Silicon Image chipset support"
 719         select BLK_DEV_IDEDMA_PCI
 720         help
 721           This driver adds PIO/(U)DMA support for the SI CMD680 and SII
 722           3112 (Serial ATA) chips.
 723
 724 config BLK_DEV_SIS5513
 725         tristate "SiS5513 chipset support"
 726         depends on X86
 727         select BLK_DEV_IDEDMA_PCI
 728         help
 729           This driver ensures (U)DMA support for SIS5513 chipset family based
 730           mainboards.
 731
 732           The following chipsets are supported:
 733           ATA16:  SiS5511, SiS5513
 734           ATA33:  SiS5591, SiS5597, SiS5598, SiS5600
 735           ATA66:  SiS530, SiS540, SiS620, SiS630, SiS640
 736           ATA100: SiS635, SiS645, SiS650, SiS730, SiS735, SiS740,
 737           SiS745, SiS750
 738
 739           If you say Y here, you need to say Y to "Use DMA by default when
 740           available" as well.
 741
 742           Please read the comments at the top of <file:drivers/ide/pci/sis5513.c>.
 743
 744 config BLK_DEV_SL82C105
 745         tristate "Winbond SL82c105 support"
 746         depends on (PPC || ARM)
 747         select BLK_DEV_IDEDMA_PCI
 748         help
 749           If you have a Winbond SL82c105 IDE controller, say Y here to enable
 750           special configuration for this chip. This is common on various CHRP
 751           motherboards, but could be used elsewhere. If in doubt, say Y.
 752
 753 config BLK_DEV_SLC90E66
 754         tristate "SLC90E66 chipset support"
 755         select BLK_DEV_IDEDMA_PCI
 756         help
 757           This driver ensures (U)DMA support for Victory66 SouthBridges for
 758           SMsC with Intel NorthBridges.  This is an Ultra66 based chipset.
 759           The nice thing about it is that you can mix Ultra/DMA/PIO devices
 760           and it will handle timing cycles.  Since this is an improved
 761           look-a-like to the PIIX4 it should be a nice addition.
 762
 763           If you say Y here, you need to say Y to "Use DMA by default when
 764           available" as well.
 765
 766           Please read the comments at the top of
 767           <file:drivers/ide/pci/slc90e66.c>.
 768
 769 config BLK_DEV_TRM290
 770         tristate "Tekram TRM290 chipset support"
 771         select BLK_DEV_IDEDMA_PCI
 772         help
 773           This driver adds support for bus master DMA transfers
 774           using the Tekram TRM290 PCI IDE chip. Volunteers are
 775           needed for further tweaking and development.
 776           Please read the comments at the top of <file:drivers/ide/pci/trm290.c>.
 777
 778 config BLK_DEV_VIA82CXXX
 779         tristate "VIA82CXXX chipset support"
 780         select BLK_DEV_IDEDMA_PCI
 781         help
 782           This driver adds explicit support for VIA BusMastering IDE chips.
 783           This allows the kernel to change PIO, DMA and UDMA speeds and to
 784           configure the chip to optimum performance.
 785
 786 config BLK_DEV_TC86C001
 787         tristate "Toshiba TC86C001 support"
 788         select BLK_DEV_IDEDMA_PCI
 789         help
 790         This driver adds support for Toshiba TC86C001 GOKU-S chip.
 791
 792 config BLK_DEV_CELLEB
 793         tristate "Toshiba's Cell Reference Set IDE support"
 794         depends on PPC_CELLEB
 795         select BLK_DEV_IDEDMA_PCI
 796         help
 797           This driver provides support for the built-in IDE controller on
 798           Toshiba Cell Reference Board.
 799           If unsure, say Y.
 800
 801 endif
 802
 803 config BLK_DEV_IDE_PMAC
 804         bool "Builtin PowerMac IDE support"
 805         depends on PPC_PMAC && IDE=y && BLK_DEV_IDE=y
 806         help
 807           This driver provides support for the built-in IDE controller on
 808           most of the recent Apple Power Macintoshes and PowerBooks.
 809           If unsure, say Y.
 810
 811 config BLK_DEV_IDE_PMAC_ATA100FIRST
 812         bool "Probe internal ATA/100 (Kauai) first"
 813         depends on BLK_DEV_IDE_PMAC
 814         help
 815           This option will cause the ATA/100 controller found in UniNorth2
 816           based machines (Windtunnel PowerMac, Aluminium PowerBooks, ...)
 817           to be probed before the ATA/66 and ATA/33 controllers. Without
 818           these, those machine used to have the hard disk on hdc and the
 819           CD-ROM on hda. This option changes this to more natural hda for
 820           hard disk and hdc for CD-ROM.
 821
 822 config BLK_DEV_IDEDMA_PMAC
 823         bool "PowerMac IDE DMA support"
 824         depends on BLK_DEV_IDE_PMAC
 825         select BLK_DEV_IDEDMA_PCI
 826         help
 827           This option allows the driver for the built-in IDE controller on
 828           Power Macintoshes and PowerBooks to use DMA (direct memory access)
 829           to transfer data to and from memory.  Saying Y is safe and improves
 830           performance.
 831
 832 config BLK_DEV_IDE_SWARM
 833         tristate "IDE for Sibyte evaluation boards"
 834         depends on SIBYTE_SB1xxx_SOC
 835
 836 config BLK_DEV_IDE_AU1XXX
 837        bool "IDE for AMD Alchemy Au1200"
 838        depends on SOC_AU1200
 839 choice
 840        prompt "IDE Mode for AMD Alchemy Au1200"
 841        default CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
 842        depends on SOC_AU1200 && BLK_DEV_IDE_AU1XXX
 843
 844 config BLK_DEV_IDE_AU1XXX_PIO_DBDMA
 845        bool "PIO+DbDMA IDE for AMD Alchemy Au1200"
 846
 847 config BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
 848        bool "MDMA2+DbDMA IDE for AMD Alchemy Au1200"
 849        depends on SOC_AU1200 && BLK_DEV_IDE_AU1XXX
 850 endchoice
 851
 852 config BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ
 853        int "Maximum transfer size (KB) per request (up to 128)"
 854        default "128"
 855        depends on BLK_DEV_IDE_AU1XXX
 856
 857 config IDE_ARM
 858         def_bool ARM && (ARCH_CLPS7500 || ARCH_RPC || ARCH_SHARK)
 859         select IDE_GENERIC
 860
 861 config BLK_DEV_IDE_ICSIDE
 862         tristate "ICS IDE interface support"
 863         depends on ARM && ARCH_ACORN
 864         help
 865           On Acorn systems, say Y here if you wish to use the ICS IDE
 866           interface card.  This is not required for ICS partition support.
 867           If you are unsure, say N to this.
 868
 869 config BLK_DEV_IDEDMA_ICS
 870         bool "ICS DMA support"
 871         depends on BLK_DEV_IDE_ICSIDE
 872         help
 873           Say Y here if you want to add DMA (Direct Memory Access) support to
 874           the ICS IDE driver.
 875
 876 config BLK_DEV_IDE_RAPIDE
 877         tristate "RapIDE interface support"
 878         depends on ARM && ARCH_ACORN
 879         help
 880           Say Y here if you want to support the Yellowstone RapIDE controller
 881           manufactured for use with Acorn computers.
 882
 883 config BLK_DEV_IDE_BAST
 884         tristate "Simtec BAST / Thorcom VR1000 IDE support"
 885         depends on ARM && (ARCH_BAST || MACH_VR1000)
 886         help
 887           Say Y here if you want to support the onboard IDE channels on the
 888           Simtec BAST or the Thorcom VR1000
 889
 890 config ETRAX_IDE
 891         bool "ETRAX IDE support"
 892         depends on CRIS && BROKEN
 893         select BLK_DEV_IDEDMA
 894         select IDE_GENERIC
 895         help
 896           Enables the ETRAX IDE driver.
 897
 898           You can't use parallel ports or SCSI ports at the same time.
 899
 900 config ETRAX_IDE_DELAY
 901         int "Delay for drives to regain consciousness"
 902         depends on ETRAX_IDE && ETRAX_ARCH_V10
 903         default 15
 904         help
 905           Number of seconds to wait for IDE drives to spin up after an IDE
 906           reset.
 907
 908 choice
 909         prompt "IDE reset pin"
 910         depends on ETRAX_IDE && ETRAX_ARCH_V10
 911         default ETRAX_IDE_PB7_RESET
 912
 913 config ETRAX_IDE_PB7_RESET
 914         bool "Port_PB_Bit_7"
 915         help
 916           IDE reset on pin 7 on port B
 917
 918 config ETRAX_IDE_G27_RESET
 919         bool "Port_G_Bit_27"
 920         help
 921           IDE reset on pin 27 on port G
 922
 923 endchoice
 924
 925 config IDE_H8300
 926         bool "H8300 IDE support"
 927         depends on H8300
 928         select IDE_GENERIC
 929         default y
 930         help
 931           Enables the H8300 IDE driver.
 932
 933 config BLK_DEV_GAYLE
 934         bool "Amiga Gayle IDE interface support"
 935         depends on AMIGA
 936         select IDE_GENERIC
 937         help
 938           This is the IDE driver for the Amiga Gayle IDE interface. It supports
 939           both the `A1200 style' and `A4000 style' of the Gayle IDE interface,
 940           This includes builtin IDE interfaces on some Amiga models (A600,
 941           A1200, A4000, and A4000T), and IDE interfaces on the Zorro expansion
 942           bus (M-Tech E-Matrix 530 expansion card).
 943           Say Y if you have an Amiga with a Gayle IDE interface and want to use
 944           IDE devices (hard disks, CD-ROM drives, etc.) that are connected to
 945           it.
 946           Note that you also have to enable Zorro bus support if you want to
 947           use Gayle IDE interfaces on the Zorro expansion bus.
 948
 949 config BLK_DEV_IDEDOUBLER
 950         bool "Amiga IDE Doubler support (EXPERIMENTAL)"
 951         depends on BLK_DEV_GAYLE && EXPERIMENTAL
 952         ---help---
 953           This driver provides support for the so-called `IDE doublers' (made
 954           by various manufacturers, e.g. Eyetech) that can be connected to the
 955           builtin IDE interface of some Amiga models. Using such an IDE
 956           doubler, you can connect up to four instead of two IDE devices on
 957           the Amiga's builtin IDE interface.
 958
 959           Note that the normal Amiga Gayle IDE driver may not work correctly
 960           if you have an IDE doubler and don't enable this driver!
 961
 962           Say Y if you have an IDE doubler.  The driver is enabled at kernel
 963           runtime using the "ide=doubler" kernel boot parameter.
 964
 965 config BLK_DEV_BUDDHA
 966         bool "Buddha/Catweasel/X-Surf IDE interface support (EXPERIMENTAL)"
 967         depends on ZORRO && EXPERIMENTAL
 968         select IDE_GENERIC
 969         help
 970           This is the IDE driver for the IDE interfaces on the Buddha,
 971           Catweasel and X-Surf expansion boards.  It supports up to two interfaces
 972           on the Buddha, three on the Catweasel and two on the X-Surf.
 973
 974           Say Y if you have a Buddha or Catweasel expansion board and want to
 975           use IDE devices (hard disks, CD-ROM drives, etc.) that are connected
 976           to one of its IDE interfaces.
 977
 978 config BLK_DEV_FALCON_IDE
 979         bool "Falcon IDE interface support"
 980         depends on ATARI
 981         select IDE_GENERIC
 982         help
 983           This is the IDE driver for the builtin IDE interface on the Atari
 984           Falcon. Say Y if you have a Falcon and want to use IDE devices (hard
 985           disks, CD-ROM drives, etc.) that are connected to the builtin IDE
 986           interface.
 987
 988 config BLK_DEV_MAC_IDE
 989         bool "Macintosh Quadra/Powerbook IDE interface support"
 990         depends on MAC
 991         select IDE_GENERIC
 992         help
 993           This is the IDE driver for the builtin IDE interface on some m68k
 994           Macintosh models. It supports both the `Quadra style' (used in
 995           Quadra/ Centris 630 and Performa 588 models) and `Powerbook style'
 996           (used in the Powerbook 150 and 190 models) IDE interface.
 997
 998           Say Y if you have such an Macintosh model and want to use IDE
 999           devices (hard disks, CD-ROM drives, etc.) that are connected to the
1000           builtin IDE interface.
1001
1002 config BLK_DEV_Q40IDE
1003         bool "Q40/Q60 IDE interface support"
1004         depends on Q40
1005         select IDE_GENERIC
1006         help
1007           Enable the on-board IDE controller in the Q40/Q60.  This should
1008           normally be on; disable it only if you are running a custom hard
1009           drive subsystem through an expansion card.
1010
1011 config BLK_DEV_MPC8xx_IDE
1012         bool "MPC8xx IDE support"
1013         depends on 8xx && (LWMON || IVMS8 || IVML24 || TQM8xxL) && IDE=y && BLK_DEV_IDE=y && !PPC_MERGE
1014         select IDE_GENERIC
1015         help
1016           This option provides support for IDE on Motorola MPC8xx Systems.
1017           Please see 'Type of MPC8xx IDE interface' for details.
1018
1019           If unsure, say N.
1020
1021 choice
1022         prompt "Type of MPC8xx IDE interface"
1023         depends on BLK_DEV_MPC8xx_IDE
1024         default IDE_8xx_PCCARD
1025
1026 config IDE_8xx_PCCARD
1027         bool "8xx_PCCARD"
1028         ---help---
1029           Select how the IDE devices are connected to the MPC8xx system:
1030
1031           8xx_PCCARD uses the 8xx internal PCMCIA interface in combination
1032           with a PC Card (e.g. ARGOSY portable Hard Disk Adapter),
1033           ATA PC Card HDDs or ATA PC Flash Cards (example: TQM8xxL
1034           systems)
1035
1036           8xx_DIRECT is used for directly connected IDE devices using the 8xx
1037           internal PCMCIA interface (example: IVMS8 systems)
1038
1039           EXT_DIRECT is used for IDE devices directly connected to the 8xx
1040           bus using some glue logic, but _not_ the 8xx internal
1041           PCMCIA interface (example: IDIF860 systems)
1042
1043 config IDE_8xx_DIRECT
1044         bool "8xx_DIRECT"
1045
1046 config IDE_EXT_DIRECT
1047         bool "EXT_DIRECT"
1048
1049 endchoice
1050
1051 # no isa -> no vlb
1052 if ISA
1053
1054 comment "Other IDE chipsets support"
1055 comment "Note: most of these also require special kernel boot parameters"
1056
1057 config BLK_DEV_4DRIVES
1058         bool "Generic 4 drives/port support"
1059         help
1060           Certain older chipsets, including the Tekram 690CD, use a single set
1061           of I/O ports at 0x1f0 to control up to four drives, instead of the
1062           customary two drives per port. Support for this can be enabled at
1063           runtime using the "ide0=four" kernel boot parameter if you say Y
1064           here.
1065
1066 config BLK_DEV_ALI14XX
1067         tristate "ALI M14xx support"
1068         help
1069           This driver is enabled at runtime using the "ali14xx.probe" kernel
1070           boot parameter.  It enables support for the secondary IDE interface
1071           of the ALI M1439/1443/1445/1487/1489 chipsets, and permits faster
1072           I/O speeds to be set as well.  See the files
1073           <file:Documentation/ide.txt> and <file:drivers/ide/legacy/ali14xx.c> for
1074           more info.
1075
1076 config BLK_DEV_DTC2278
1077         tristate "DTC-2278 support"
1078         help
1079           This driver is enabled at runtime using the "dtc2278.probe" kernel
1080           boot parameter. It enables support for the secondary IDE interface
1081           of the DTC-2278 card, and permits faster I/O speeds to be set as
1082           well. See the <file:Documentation/ide.txt> and
1083           <file:drivers/ide/legacy/dtc2278.c> files for more info.
1084
1085 config BLK_DEV_HT6560B
1086         tristate "Holtek HT6560B support"
1087         help
1088           This driver is enabled at runtime using the "ht6560b.probe" kernel
1089           boot parameter. It enables support for the secondary IDE interface
1090           of the Holtek card, and permits faster I/O speeds to be set as well.
1091           See the <file:Documentation/ide.txt> and
1092           <file:drivers/ide/legacy/ht6560b.c> files for more info.
1093
1094 config BLK_DEV_QD65XX
1095         tristate "QDI QD65xx support"
1096         help
1097           This driver is enabled at runtime using the "qd65xx.probe" kernel
1098           boot parameter.  It permits faster I/O speeds to be set.  See the
1099           <file:Documentation/ide.txt> and <file:drivers/ide/legacy/qd65xx.c> for
1100           more info.
1101
1102 config BLK_DEV_UMC8672
1103         tristate "UMC-8672 support"
1104         help
1105           This driver is enabled at runtime using the "umc8672.probe" kernel
1106           boot parameter. It enables support for the secondary IDE interface
1107           of the UMC-8672, and permits faster I/O speeds to be set as well.
1108           See the files <file:Documentation/ide.txt> and
1109           <file:drivers/ide/legacy/umc8672.c> for more info.
1110
1111 endif
1112
1113 config BLK_DEV_IDEDMA
1114         def_bool BLK_DEV_IDEDMA_PCI || BLK_DEV_IDEDMA_PMAC || BLK_DEV_IDEDMA_ICS || BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
1115
1116 config IDE_ARCH_OBSOLETE_INIT
1117         def_bool ALPHA || (ARM && !ARCH_L7200) || BLACKFIN || X86 || IA64 || M32R || MIPS || PARISC || PPC || (SUPERH64 && BLK_DEV_IDEPCI) || SPARC
1118
1119 endif
1120
1121 config BLK_DEV_HD_ONLY
1122         bool "Old hard disk (MFM/RLL/IDE) driver"
1123         depends on BLK_DEV_IDE=n
1124         help
1125           There are two drivers for MFM/RLL/IDE hard disks. Most people use
1126           the newer enhanced driver, but this old one is still around for two
1127           reasons. Some older systems have strange timing problems and seem to
1128           work only with the old driver (which itself does not work with some
1129           newer systems). The other reason is that the old driver is smaller,
1130           since it lacks the enhanced functionality of the new one. This makes
1131           it a good choice for systems with very tight memory restrictions, or
1132           for systems with only older MFM/RLL/ESDI drives. Choosing the old
1133           driver can save 13 KB or so of kernel memory.
1134
1135           If you are unsure, then just choose the Enhanced IDE/MFM/RLL driver
1136           instead of this one. For more detailed information, read the
1137           Disk-HOWTO, available from
1138           <http://www.tldp.org/docs.html#howto>.
1139
1140 config BLK_DEV_HD
1141         def_bool BLK_DEV_HD_IDE || BLK_DEV_HD_ONLY
1142
1143 endif # IDE