ide: skip not present devices in init_gendisk()

[linux-2.6] / drivers / ide / Kconfig

#
# IDE ATA ATAPI Block device driver configuration
#
# Andre Hedrick <andre@linux-ide.org>
#

menuconfig IDE
        tristate "ATA/ATAPI/MFM/RLL support"
        depends on BLOCK
        depends on HAS_IOMEM
        ---help---
          If you say Y here, your kernel will be able to manage low cost mass
          storage units such as ATA/(E)IDE and ATAPI units. The most common
          cases are IDE hard drives and ATAPI CD-ROM drives.

          If your system is pure SCSI and doesn't use these interfaces, you
          can say N here.

          Integrated Disk Electronics (IDE aka ATA-1) is a connecting standard
          for mass storage units such as hard disks. It was designed by
          Western Digital and Compaq Computer in 1984. It was then named
          ST506. Quite a number of disks use the IDE interface.

          AT Attachment (ATA) is the superset of the IDE specifications.
          ST506 was also called ATA-1.

          Fast-IDE is ATA-2 (also named Fast ATA), Enhanced IDE (EIDE) is
          ATA-3. It provides support for larger disks (up to 8.4GB by means of
          the LBA standard), more disks (4 instead of 2) and for other mass
          storage units such as tapes and cdrom. UDMA/33 (aka UltraDMA/33) is
          ATA-4 and provides faster (and more CPU friendly) transfer modes
          than previous PIO (Programmed processor Input/Output) from previous
          ATA/IDE standards by means of fast DMA controllers.

          ATA Packet Interface (ATAPI) is a protocol used by EIDE tape and
          CD-ROM drives, similar in many respects to the SCSI protocol.

          SMART IDE (Self Monitoring, Analysis and Reporting Technology) was
          designed in order to prevent data corruption and disk crash by
          detecting pre hardware failure conditions (heat, access time, and
          the like...). Disks built since June 1995 may follow this standard.
          The kernel itself doesn't manage this; however there are quite a
          number of user programs such as smart that can query the status of
          SMART parameters from disk drives.

          To compile this driver as a module, choose M here: the
          module will be called ide.

          For further information, please read <file:Documentation/ide.txt>.

          If unsure, say Y.

if IDE

config IDE_MAX_HWIFS
        int "Max IDE interfaces"
        depends on ALPHA || SUPERH || IA64 || EMBEDDED
        range 1 10
        default 4
        help
          This is the maximum number of IDE hardware interfaces that will
          be supported by the driver. Make sure it is at least as high as
          the number of IDE interfaces in your system.

config BLK_DEV_IDE
        tristate "Enhanced IDE/MFM/RLL disk/cdrom/tape/floppy support"
        ---help---
          If you say Y here, you will use the full-featured IDE driver to
          control up to ten ATA/IDE interfaces, each being able to serve a
          "master" and a "slave" device, for a total of up to twenty ATA/IDE
          disk/cdrom/tape/floppy drives.

          Useful information about large (>540 MB) IDE disks, multiple
          interfaces, what to do if ATA/IDE devices are not automatically
          detected, sound card ATA/IDE ports, module support, and other
          topics, is contained in <file:Documentation/ide.txt>. For detailed
          information about hard drives, consult the Disk-HOWTO and the
          Multi-Disk-HOWTO, available from
          <http://www.tldp.org/docs.html#howto>.

          To fine-tune ATA/IDE drive/interface parameters for improved
          performance, look for the hdparm package at
          <ftp://ibiblio.org/pub/Linux/system/hardware/>.

          To compile this driver as a module, choose M here and read
          <file:Documentation/ide.txt>. The module will be called ide-mod.
          Do not compile this driver as a module if your root file system (the
          one containing the directory /) is located on an IDE device.

          If you have one or more IDE drives, say Y or M here. If your system
          has no IDE drives, or if memory requirements are really tight, you
          could say N here, and select the "Old hard disk driver" below
          instead to save about 13 KB of memory in the kernel.

if BLK_DEV_IDE

comment "Please see Documentation/ide.txt for help/info on IDE drives"

config BLK_DEV_IDE_SATA
        bool "Support for SATA (deprecated; conflicts with libata SATA driver)"
        default n
        ---help---
          There are two drivers for Serial ATA controllers.

          The main driver, "libata", uses the SCSI subsystem
          and supports most modern SATA controllers. In order to use it
          you may take a look at "Serial ATA (prod) and Parallel ATA
          (experimental) drivers".

          The IDE driver (which you are currently configuring) supports
          a few first-generation SATA controllers.

          In order to eliminate conflicts between the two subsystems,
          this config option enables the IDE driver's SATA support.
          Normally this is disabled, as it is preferred that libata
          supports SATA controllers, and this (IDE) driver supports
          PATA controllers.

          If unsure, say N.

config BLK_DEV_HD_IDE
        bool "Use old disk-only driver on primary interface"
        depends on (X86 || SH_MPC1211)
        ---help---
          There are two drivers for MFM/RLL/IDE disks.  Most people use just
          the new enhanced driver by itself.  This option however installs the
          old hard disk driver to control the primary IDE/disk interface in
          the system, leaving the new enhanced IDE driver to take care of only
          the 2nd/3rd/4th IDE interfaces.  Doing this will prevent you from
          having an IDE/ATAPI CD-ROM or tape drive connected to the primary
          IDE interface.  Choosing this option may be useful for older systems
          which have MFM/RLL/ESDI controller+drives at the primary port
          address (0x1f0), along with IDE drives at the secondary/3rd/4th port
          addresses.

          Normally, just say N here; you will then use the new driver for all
          4 interfaces.

config BLK_DEV_IDEDISK
        tristate "Include IDE/ATA-2 DISK support"
        ---help---
          This will include enhanced support for MFM/RLL/IDE hard disks.  If
          you have a MFM/RLL/IDE disk, and there is no special reason to use
          the old hard disk driver instead, say Y.  If you have an SCSI-only
          system, you can say N here.

          To compile this driver as a module, choose M here: the
          module will be called ide-disk.
          Do not compile this driver as a module if your root file system
          (the one containing the directory /) is located on the IDE disk.

          If unsure, say Y.

config IDEDISK_MULTI_MODE
        bool "Use multiple sector mode for Programmed Input/Output by default"
        help
          This setting is irrelevant for most IDE disks, with direct memory
          access, to which multiple sector mode does not apply. Multiple sector
          mode is a feature of most modern IDE hard drives, permitting the
          transfer of multiple sectors per Programmed Input/Output interrupt,
          rather than the usual one sector per interrupt. When this feature is
          enabled, it can reduce operating system overhead for disk Programmed
          Input/Output. On some systems, it also can increase the data
          throughput of Programmed Input/Output. Some drives, however, seemed
          to run slower with multiple sector mode enabled. Some drives claimed
          to support multiple sector mode, but lost data at some settings.
          Under rare circumstances, such failures could result in massive
          filesystem corruption.

          If you get the following error, try to say Y here:

          hda: set_multmode: status=0x51 { DriveReady SeekComplete Error }
          hda: set_multmode: error=0x04 { DriveStatusError }

          If in doubt, say N.

config BLK_DEV_IDECS
        tristate "PCMCIA IDE support"
        depends on PCMCIA
        help
          Support for Compact Flash cards, outboard IDE disks, tape drives,
          and CD-ROM drives connected through a PCMCIA card.

config BLK_DEV_DELKIN
        tristate "Cardbus IDE support (Delkin/ASKA/Workbit)"
        depends on CARDBUS && PCI
        help
          Support for Delkin, ASKA, and Workbit Cardbus CompactFlash
          Adapters.  This may also work for similar SD and XD adapters.

config BLK_DEV_IDECD
        tristate "Include IDE/ATAPI CDROM support"
        ---help---
          If you have a CD-ROM drive using the ATAPI protocol, say Y. ATAPI is
          a newer protocol used by IDE CD-ROM and TAPE drives, similar to the
          SCSI protocol. Most new CD-ROM drives use ATAPI, including the
          NEC-260, Mitsumi FX400, Sony 55E, and just about all non-SCSI
          double(2X) or better speed drives.

          If you say Y here, the CD-ROM drive will be identified at boot time
          along with other IDE devices, as "hdb" or "hdc", or something
          similar (check the boot messages with dmesg). If this is your only
          CD-ROM drive, you can say N to all other CD-ROM options, but be sure
          to say Y or M to "ISO 9660 CD-ROM file system support".

          To compile this driver as a module, choose M here: the
          module will be called ide-cd.

config BLK_DEV_IDECD_VERBOSE_ERRORS
        bool "Verbose error logging for IDE/ATAPI CDROM driver" if EMBEDDED
        depends on BLK_DEV_IDECD
        default y
        help
          Turn this on to have the driver print out the meanings of the
          ATAPI error codes.  This will use up additional 8kB of kernel-space
          memory, though.

config BLK_DEV_IDETAPE
        tristate "Include IDE/ATAPI TAPE support (EXPERIMENTAL)"
        depends on EXPERIMENTAL
        help
          If you have an IDE tape drive using the ATAPI protocol, say Y.
          ATAPI is a newer protocol used by IDE tape and CD-ROM drives,
          similar to the SCSI protocol.  If you have an SCSI tape drive
          however, you can say N here.

          You should also say Y if you have an OnStream DI-30 tape drive; this
          will not work with the SCSI protocol, until there is support for the
          SC-30 and SC-50 versions.

          If you say Y here, the tape drive will be identified at boot time
          along with other IDE devices, as "hdb" or "hdc", or something
          similar, and will be mapped to a character device such as "ht0"
          (check the boot messages with dmesg).  Be sure to consult the
          <file:drivers/ide/ide-tape.c> and <file:Documentation/ide.txt> files
          for usage information.

          To compile this driver as a module, choose M here: the
          module will be called ide-tape.

config BLK_DEV_IDEFLOPPY
        tristate "Include IDE/ATAPI FLOPPY support"
        ---help---
          If you have an IDE floppy drive which uses the ATAPI protocol,
          answer Y.  ATAPI is a newer protocol used by IDE CD-ROM/tape/floppy
          drives, similar to the SCSI protocol.

          The LS-120 and the IDE/ATAPI Iomega ZIP drive are also supported by
          this driver. For information about jumper settings and the question
          of when a ZIP drive uses a partition table, see
          <http://www.win.tue.nl/~aeb/linux/zip/zip-1.html>.
          (ATAPI PD-CD/CDR drives are not supported by this driver; support
          for PD-CD/CDR drives is available if you answer Y to
          "SCSI emulation support", below).

          If you say Y here, the FLOPPY drive will be identified along with
          other IDE devices, as "hdb" or "hdc", or something similar (check
          the boot messages with dmesg).

          To compile this driver as a module, choose M here: the
          module will be called ide-floppy.

config BLK_DEV_IDESCSI
        tristate "SCSI emulation support"
        depends on SCSI
        ---help---
          WARNING: ide-scsi is no longer needed for cd writing applications!
          The 2.6 kernel supports direct writing to ide-cd, which eliminates
          the need for ide-scsi + the entire scsi stack just for writing a
          cd. The new method is more efficient in every way.

          This will provide SCSI host adapter emulation for IDE ATAPI devices,
          and will allow you to use a SCSI device driver instead of a native
          ATAPI driver.

          This is useful if you have an ATAPI device for which no native
          driver has been written (for example, an ATAPI PD-CD drive);
          you can then use this emulation together with an appropriate SCSI
          device driver. In order to do this, say Y here and to "SCSI support"
          and "SCSI generic support", below. You must then provide the kernel
          command line "hdx=ide-scsi" (try "man bootparam" or see the
          documentation of your boot loader (lilo or loadlin) about how to
          pass options to the kernel at boot time) for devices if you want the
          native EIDE sub-drivers to skip over the native support, so that
          this SCSI emulation can be used instead.

          Note that this option does NOT allow you to attach SCSI devices to a
          box that doesn't have a SCSI host adapter installed.

          If both this SCSI emulation and native ATAPI support are compiled
          into the kernel, the native support will be used.

config BLK_DEV_IDEACPI
        bool "IDE ACPI support"
        depends on ACPI
        ---help---
          Implement ACPI support for generic IDE devices. On modern
          machines ACPI support is required to properly handle ACPI S3 states.

config IDE_TASK_IOCTL
        bool "IDE Taskfile Access"
        help
          This is a direct raw access to the media.  It is a complex but
          elegant solution to test and validate the domain of the hardware and
          perform below the driver data recovery if needed.  This is the most
          basic form of media-forensics.

          If you are unsure, say N here.

config IDE_PROC_FS
        bool "legacy /proc/ide/ support"
        depends on IDE && PROC_FS
        default y
        help
          This option enables support for the various files in
          /proc/ide.  In Linux 2.6 this has been superseded by
          files in sysfs but many legacy applications rely on this.

          If unsure say Y.

comment "IDE chipset support/bugfixes"

config IDE_GENERIC
        tristate "generic/default IDE chipset support"
        help
          If unsure, say N.

config BLK_DEV_PLATFORM
        tristate "Platform driver for IDE interfaces"
        help
          This is the platform IDE driver, used mostly for Memory Mapped
          IDE devices, like Compact Flashes running in True IDE mode.

          If unsure, say N.

config BLK_DEV_CMD640
        tristate "CMD640 chipset bugfix/support"
        depends on X86
        ---help---
          The CMD-Technologies CMD640 IDE chip is used on many common 486 and
          Pentium motherboards, usually in combination with a "Neptune" or
          "SiS" chipset. Unfortunately, it has a number of rather nasty
          design flaws that can cause severe data corruption under many common
          conditions. Say Y here to include code which tries to automatically
          detect and correct the problems under Linux. This option also
          enables access to the secondary IDE ports in some CMD640 based
          systems.

          This driver will work automatically in PCI based systems (most new
          systems have PCI slots). But if your system uses VESA local bus
          (VLB) instead of PCI, you must also supply a kernel boot parameter
          to enable the CMD640 bugfix/support: "ide0=cmd640_vlb". (Try "man
          bootparam" or see the documentation of your boot loader about how to
          pass options to the kernel.)

          The CMD640 chip is also used on add-in cards by Acculogic, and on
          the "CSA-6400E PCI to IDE controller" that some people have. For
          details, read <file:Documentation/ide.txt>.

config BLK_DEV_CMD640_ENHANCED
        bool "CMD640 enhanced support"
        depends on BLK_DEV_CMD640
        help
          This option includes support for setting/autotuning PIO modes and
          prefetch on CMD640 IDE interfaces.  For details, read
          <file:Documentation/ide.txt>. If you have a CMD640 IDE interface
          and your BIOS does not already do this for you, then say Y here.
          Otherwise say N.

config BLK_DEV_IDEPNP
        tristate "PNP EIDE support"
        depends on PNP
        help
          If you have a PnP (Plug and Play) compatible EIDE card and
          would like the kernel to automatically detect and activate
          it, say Y here.

if PCI

comment "PCI IDE chipsets support"

config BLK_DEV_IDEPCI
        bool

config IDEPCI_PCIBUS_ORDER
        bool "Probe IDE PCI devices in the PCI bus order (DEPRECATED)"
        depends on BLK_DEV_IDE=y && BLK_DEV_IDEPCI
        default y
        help
          Probe IDE PCI devices in the order in which they appear on the
          PCI bus (i.e. 00:1f.1 PCI device before 02:01.0 PCI device)
          instead of the order in which IDE PCI host drivers are loaded.

          Please note that this method of assuring stable naming of
          IDE devices is unreliable and use other means for achieving
          it (i.e. udev).

          If in doubt, say N.

# TODO: split it on per host driver config options (or module parameters)
config BLK_DEV_OFFBOARD
        bool "Boot off-board chipsets first support (DEPRECATED)"
        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)
        help
          Normally, IDE controllers built into the motherboard (on-board
          controllers) are assigned to ide0 and ide1 while those on add-in PCI
          cards (off-board controllers) are relegated to ide2 and ide3.
          Answering Y here will allow you to reverse the situation, with
          off-board controllers on ide0/1 and on-board controllers on ide2/3.
          This can improve the usability of some boot managers such as lilo
          when booting from a drive on an off-board controller.

          If you say Y here, and you actually want to reverse the device scan
          order as explained above, you also need to issue the kernel command
          line option "ide=reverse". (Try "man bootparam" or see the
          documentation of your boot loader (lilo or loadlin) about how to
          pass options to the kernel at boot time.)

          Note that, if you do this, the order of the hd* devices will be
          rearranged which may require modification of fstab and other files.

          Please also note that this method of assuring stable naming of
          IDE devices is unreliable and use other means for achieving it
          (i.e. udev).

          If in doubt, say N.

config BLK_DEV_GENERIC
        tristate "Generic PCI IDE Chipset Support"
        select BLK_DEV_IDEPCI
        help
          This option provides generic support for various PCI IDE Chipsets
          which otherwise might not be supported.

config BLK_DEV_OPTI621
        tristate "OPTi 82C621 chipset enhanced support (EXPERIMENTAL)"
        depends on EXPERIMENTAL
        select BLK_DEV_IDEPCI
        help
          This is a driver for the OPTi 82C621 EIDE controller.
          Please read the comments at the top of <file:drivers/ide/pci/opti621.c>.

config BLK_DEV_RZ1000
        tristate "RZ1000 chipset bugfix/support"
        depends on X86
        select BLK_DEV_IDEPCI
        help
          The PC-Technologies RZ1000 IDE chip is used on many common 486 and
          Pentium motherboards, usually along with the "Neptune" chipset.
          Unfortunately, it has a rather nasty design flaw that can cause
          severe data corruption under many conditions. Say Y here to include
          code which automatically detects and corrects the problem under
          Linux. This may slow disk throughput by a few percent, but at least
          things will operate 100% reliably.

config BLK_DEV_IDEDMA_PCI
        bool
        select BLK_DEV_IDEPCI

config BLK_DEV_AEC62XX
        tristate "AEC62XX chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds explicit support for Acard AEC62xx (Artop ATP8xx)
          IDE controllers. This allows the kernel to change PIO, DMA and UDMA
          speeds and to configure the chip to optimum performance.

config BLK_DEV_ALI15X3
        tristate "ALI M15x3 chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver ensures (U)DMA support for ALI 1533, 1543 and 1543C
          onboard chipsets.  It also tests for Simplex mode and enables
          normal dual channel support.

          If you say Y here, you also need to say Y to "Use DMA by default
          when available", above.  Please read the comments at the top of
          <file:drivers/ide/pci/alim15x3.c>.

          If unsure, say N.

config WDC_ALI15X3
        bool "ALI M15x3 WDC support (DANGEROUS)"
        depends on BLK_DEV_ALI15X3
        ---help---
          This allows for UltraDMA support for WDC drives that ignore CRC
          checking. You are a fool for enabling this option, but there have
          been requests. DO NOT COMPLAIN IF YOUR DRIVE HAS FS CORRUPTION, IF
          YOU ENABLE THIS! No one will listen, just laugh for ignoring this
          SERIOUS WARNING.

          Using this option can allow WDC drives to run at ATA-4/5 transfer
          rates with only an ATA-2 support structure.

          SAY N!

config BLK_DEV_AMD74XX
        tristate "AMD and nVidia IDE support"
        depends on !ARM
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds explicit support for AMD-7xx and AMD-8111 chips
          and also for the nVidia nForce chip.  This allows the kernel to
          change PIO, DMA and UDMA speeds and to configure the chip to
          optimum performance.

config BLK_DEV_ATIIXP
        tristate "ATI IXP chipset IDE support"
        depends on X86
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds explicit support for ATI IXP chipset.
          This allows the kernel to change PIO, DMA and UDMA speeds
          and to configure the chip to optimum performance.

          Say Y here if you have an ATI IXP chipset IDE controller.

config BLK_DEV_CMD64X
        tristate "CMD64{3|6|8|9} chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          Say Y here if you have an IDE controller which uses any of these
          chipsets: CMD643, CMD646, or CMD648.

config BLK_DEV_TRIFLEX
        tristate "Compaq Triflex IDE support"
        select BLK_DEV_IDEDMA_PCI
        help
          Say Y here if you have a Compaq Triflex IDE controller, such
          as those commonly found on Compaq Pentium-Pro systems

config BLK_DEV_CY82C693
        tristate "CY82C693 chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds detection and support for the CY82C693 chipset
          used on Digital's PC-Alpha 164SX boards.

          If you say Y here, you need to say Y to "Use DMA by default
          when available" as well.

config BLK_DEV_CS5520
        tristate "Cyrix CS5510/20 MediaGX chipset support (VERY EXPERIMENTAL)"
        depends on EXPERIMENTAL
        select BLK_DEV_IDEDMA_PCI
        help
          Include support for PIO tuning and virtual DMA on the Cyrix MediaGX
          5510/5520 chipset. This will automatically be detected and
          configured if found.

          It is safe to say Y to this question.

config BLK_DEV_CS5530
        tristate "Cyrix/National Semiconductor CS5530 MediaGX chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          Include support for UDMA on the Cyrix MediaGX 5530 chipset. This
          will automatically be detected and configured if found.

          It is safe to say Y to this question.

config BLK_DEV_CS5535
        tristate "AMD CS5535 chipset support"
        depends on X86 && !X86_64
        select BLK_DEV_IDEDMA_PCI
        help
          Include support for UDMA on the NSC/AMD CS5535 companion chipset.
          This will automatically be detected and configured if found.

          It is safe to say Y to this question.

config BLK_DEV_HPT34X
        tristate "HPT34X chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds up to 4 more EIDE devices sharing a single
          interrupt. The HPT343 chipset in its current form is a non-bootable
          controller; the HPT345/HPT363 chipset is a bootable (needs BIOS FIX)
          PCI UDMA controllers. This driver requires dynamic tuning of the
          chipset during the ide-probe at boot time. It is reported to support
          DVD II drives, by the manufacturer.

config HPT34X_AUTODMA
        bool "HPT34X AUTODMA support (EXPERIMENTAL)"
        depends on BLK_DEV_HPT34X && EXPERIMENTAL
        help
          This is a dangerous thing to attempt currently! Please read the
          comments at the top of <file:drivers/ide/pci/hpt34x.c>.  If you say Y
          here, then say Y to "Use DMA by default when available" as well.

          If unsure, say N.

config BLK_DEV_HPT366
        tristate "HPT36X/37X chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          HPT366 is an Ultra DMA chipset for ATA-66.
          HPT368 is an Ultra DMA chipset for ATA-66 RAID Based.
          HPT370 is an Ultra DMA chipset for ATA-100.
          HPT372 is an Ultra DMA chipset for ATA-100.
          HPT374 is an Ultra DMA chipset for ATA-100.

          This driver adds up to 4 more EIDE devices sharing a single
          interrupt.

          The HPT366 chipset in its current form is bootable. One solution
          for this problem are special LILO commands for redirecting the
          reference to device 0x80. The other solution is to say Y to "Boot
          off-board chipsets first support" (CONFIG_BLK_DEV_OFFBOARD) unless
          your mother board has the chipset natively mounted. Regardless one
          should use the fore mentioned option and call at LILO or include
          "ide=reverse" in LILO's append-line.

          This driver requires dynamic tuning of the chipset during the
          ide-probe at boot. It is reported to support DVD II drives, by the
          manufacturer.

config BLK_DEV_JMICRON
        tristate "JMicron JMB36x support"
        select BLK_DEV_IDEDMA_PCI
        help
          Basic support for the JMicron ATA controllers. For full support
          use the libata drivers.

config BLK_DEV_SC1200
        tristate "National SCx200 chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds support for the on-board IDE controller on the
          National SCx200 series of embedded x86 "Geode" systems.

config BLK_DEV_PIIX
        tristate "Intel PIIXn chipsets support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds explicit support for Intel PIIX and ICH chips
          and also for the Efar Victory66 (slc90e66) chip.  This allows
          the kernel to change PIO, DMA and UDMA speeds and to configure
          the chip to optimum performance.

config BLK_DEV_IT8213
        tristate "IT8213 IDE support"
        select BLK_DEV_IDEDMA_PCI
        help
         This driver adds support for the ITE 8213 IDE controller.

config BLK_DEV_IT821X
        tristate "IT821X IDE support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds support for the ITE 8211 IDE controller and the
          IT 8212 IDE RAID controller in both RAID and pass-through mode.

config BLK_DEV_NS87415
        tristate "NS87415 chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds detection and support for the NS87415 chip
          (used mainly on SPARC64 and PA-RISC machines).

          Please read the comments at the top of <file:drivers/ide/pci/ns87415.c>.

config BLK_DEV_PDC202XX_OLD
        tristate "PROMISE PDC202{46|62|65|67} support"
        select BLK_DEV_IDEDMA_PCI
        help
          Promise Ultra33 or PDC20246
          Promise Ultra66 or PDC20262
          Promise Ultra100 or PDC20265/PDC20267/PDC20268

          This driver adds up to 4 more EIDE devices sharing a single
          interrupt. This add-on card is a bootable PCI UDMA controller. Since
          multiple cards can be installed and there are BIOS ROM problems that
          happen if the BIOS revisions of all installed cards (three-max) do
          not match, the driver attempts to do dynamic tuning of the chipset
          at boot-time for max-speed.  Ultra33 BIOS 1.25 or newer is required
          for more than one card. This card may require that you say Y to
          "Special UDMA Feature".

          If you say Y here, you need to say Y to "Use DMA by default when
          available" as well.

          Please read the comments at the top of
          <file:drivers/ide/pci/pdc202xx_old.c>.

          If unsure, say N.

config PDC202XX_BURST
        bool "Special UDMA Feature"
        depends on BLK_DEV_PDC202XX_OLD
        help
          This option causes the pdc202xx driver to enable UDMA modes on the
          PDC202xx even when the PDC202xx BIOS has not done so.

          It was originally designed for the PDC20246/Ultra33, whose BIOS will
          only setup UDMA on the first two PDC20246 cards.  It has also been
          used successfully on a PDC20265/Ultra100, allowing use of UDMA modes
          when the PDC20265 BIOS has been disabled (for faster boot up).

          Please read the comments at the top of
          <file:drivers/ide/pci/pdc202xx_old.c>.

          If unsure, say N.

config BLK_DEV_PDC202XX_NEW
        tristate "PROMISE PDC202{68|69|70|71|75|76|77} support"
        select BLK_DEV_IDEDMA_PCI

config BLK_DEV_SVWKS
        tristate "ServerWorks OSB4/CSB5/CSB6 chipsets support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds PIO/(U)DMA support for the ServerWorks OSB4/CSB5
          chipsets.

config BLK_DEV_SGIIOC4
        tristate "Silicon Graphics IOC4 chipset ATA/ATAPI support"
        depends on (IA64_SGI_SN2 || IA64_GENERIC) && SGI_IOC4
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds PIO & MultiMode DMA-2 support for the SGI IOC4
          chipset, which has one channel and can support two devices.
          Please say Y here if you have an Altix System from SGI.

config BLK_DEV_SIIMAGE
        tristate "Silicon Image chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds PIO/(U)DMA support for the SI CMD680 and SII
          3112 (Serial ATA) chips.

config BLK_DEV_SIS5513
        tristate "SiS5513 chipset support"
        depends on X86
        select BLK_DEV_IDEDMA_PCI
        help
          This driver ensures (U)DMA support for SIS5513 chipset family based
          mainboards.

          The following chipsets are supported:
          ATA16:  SiS5511, SiS5513
          ATA33:  SiS5591, SiS5597, SiS5598, SiS5600
          ATA66:  SiS530, SiS540, SiS620, SiS630, SiS640
          ATA100: SiS635, SiS645, SiS650, SiS730, SiS735, SiS740,
          SiS745, SiS750

          If you say Y here, you need to say Y to "Use DMA by default when
          available" as well.

          Please read the comments at the top of <file:drivers/ide/pci/sis5513.c>.

config BLK_DEV_SL82C105
        tristate "Winbond SL82c105 support"
        depends on (PPC || ARM)
        select BLK_DEV_IDEDMA_PCI
        help
          If you have a Winbond SL82c105 IDE controller, say Y here to enable
          special configuration for this chip. This is common on various CHRP
          motherboards, but could be used elsewhere. If in doubt, say Y.

config BLK_DEV_SLC90E66
        tristate "SLC90E66 chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver ensures (U)DMA support for Victory66 SouthBridges for
          SMsC with Intel NorthBridges.  This is an Ultra66 based chipset.
          The nice thing about it is that you can mix Ultra/DMA/PIO devices
          and it will handle timing cycles.  Since this is an improved
          look-a-like to the PIIX4 it should be a nice addition.

          If you say Y here, you need to say Y to "Use DMA by default when
          available" as well.

          Please read the comments at the top of
          <file:drivers/ide/pci/slc90e66.c>.

config BLK_DEV_TRM290
        tristate "Tekram TRM290 chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds support for bus master DMA transfers
          using the Tekram TRM290 PCI IDE chip. Volunteers are
          needed for further tweaking and development.
          Please read the comments at the top of <file:drivers/ide/pci/trm290.c>.

config BLK_DEV_VIA82CXXX
        tristate "VIA82CXXX chipset support"
        select BLK_DEV_IDEDMA_PCI
        help
          This driver adds explicit support for VIA BusMastering IDE chips.
          This allows the kernel to change PIO, DMA and UDMA speeds and to
          configure the chip to optimum performance.

config BLK_DEV_TC86C001
        tristate "Toshiba TC86C001 support"
        select BLK_DEV_IDEDMA_PCI
        help
        This driver adds support for Toshiba TC86C001 GOKU-S chip.

config BLK_DEV_CELLEB
        tristate "Toshiba's Cell Reference Set IDE support"
        depends on PPC_CELLEB
        select BLK_DEV_IDEDMA_PCI
        help
          This driver provides support for the on-board IDE controller on
          Toshiba Cell Reference Board.
          If unsure, say Y.

endif

config BLK_DEV_IDE_PMAC
        tristate "PowerMac on-board IDE support"
        depends on PPC_PMAC && IDE=y && BLK_DEV_IDE=y
        help
          This driver provides support for the on-board IDE controller on
          most of the recent Apple Power Macintoshes and PowerBooks.
          If unsure, say Y.

config BLK_DEV_IDE_PMAC_ATA100FIRST
        bool "Probe on-board ATA/100 (Kauai) first"
        depends on BLK_DEV_IDE_PMAC
        help
          This option will cause the ATA/100 controller found in UniNorth2
          based machines (Windtunnel PowerMac, Aluminium PowerBooks, ...)
          to be probed before the ATA/66 and ATA/33 controllers. Without
          these, those machine used to have the hard disk on hdc and the
          CD-ROM on hda. This option changes this to more natural hda for
          hard disk and hdc for CD-ROM.

config BLK_DEV_IDEDMA_PMAC
        bool "PowerMac IDE DMA support"
        depends on BLK_DEV_IDE_PMAC
        select BLK_DEV_IDEDMA_PCI
        help
          This option allows the driver for the on-board IDE controller on
          Power Macintoshes and PowerBooks to use DMA (direct memory access)
          to transfer data to and from memory.  Saying Y is safe and improves
          performance.

config BLK_DEV_IDE_SWARM
        tristate "IDE for Sibyte evaluation boards"
        depends on SIBYTE_SB1xxx_SOC

config BLK_DEV_IDE_AU1XXX
       bool "IDE for AMD Alchemy Au1200"
       depends on SOC_AU1200
choice
       prompt "IDE Mode for AMD Alchemy Au1200"
       default CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
       depends on SOC_AU1200 && BLK_DEV_IDE_AU1XXX

config BLK_DEV_IDE_AU1XXX_PIO_DBDMA
       bool "PIO+DbDMA IDE for AMD Alchemy Au1200"

config BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
       bool "MDMA2+DbDMA IDE for AMD Alchemy Au1200"
       depends on SOC_AU1200 && BLK_DEV_IDE_AU1XXX
endchoice

config BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ
       int "Maximum transfer size (KB) per request (up to 128)"
       default "128"
       depends on BLK_DEV_IDE_AU1XXX

config IDE_ARM
        tristate "ARM IDE support"
        depends on ARM && (ARCH_CLPS7500 || ARCH_RPC || ARCH_SHARK)
        default y

config BLK_DEV_IDE_ICSIDE
        tristate "ICS IDE interface support"
        depends on ARM && ARCH_ACORN
        help
          On Acorn systems, say Y here if you wish to use the ICS IDE
          interface card.  This is not required for ICS partition support.
          If you are unsure, say N to this.

config BLK_DEV_IDEDMA_ICS
        bool "ICS DMA support"
        depends on BLK_DEV_IDE_ICSIDE
        help
          Say Y here if you want to add DMA (Direct Memory Access) support to
          the ICS IDE driver.

config BLK_DEV_IDE_RAPIDE
        tristate "RapIDE interface support"
        depends on ARM && ARCH_ACORN
        help
          Say Y here if you want to support the Yellowstone RapIDE controller
          manufactured for use with Acorn computers.

config BLK_DEV_IDE_BAST
        tristate "Simtec BAST / Thorcom VR1000 IDE support"
        depends on ARM && (ARCH_BAST || MACH_VR1000)
        help
          Say Y here if you want to support the onboard IDE channels on the
          Simtec BAST or the Thorcom VR1000

config ETRAX_IDE
        tristate "ETRAX IDE support"
        depends on CRIS && BROKEN
        select BLK_DEV_IDEDMA
        help
          Enables the ETRAX IDE driver.

          You can't use parallel ports or SCSI ports at the same time.

config ETRAX_IDE_DELAY
        int "Delay for drives to regain consciousness"
        depends on ETRAX_IDE && ETRAX_ARCH_V10
        default 15
        help
          Number of seconds to wait for IDE drives to spin up after an IDE
          reset.

choice
        prompt "IDE reset pin"
        depends on ETRAX_IDE && ETRAX_ARCH_V10
        default ETRAX_IDE_PB7_RESET

config ETRAX_IDE_PB7_RESET
        bool "Port_PB_Bit_7"
        help
          IDE reset on pin 7 on port B

config ETRAX_IDE_G27_RESET
        bool "Port_G_Bit_27"
        help
          IDE reset on pin 27 on port G

endchoice

config IDE_H8300
        tristate "H8300 IDE support"
        depends on H8300
        default y
        help
          Enables the H8300 IDE driver.

config BLK_DEV_GAYLE
        tristate "Amiga Gayle IDE interface support"
        depends on AMIGA
        help
          This is the IDE driver for the Amiga Gayle IDE interface. It supports
          both the `A1200 style' and `A4000 style' of the Gayle IDE interface,
          This includes on-board IDE interfaces on some Amiga models (A600,
          A1200, A4000, and A4000T), and IDE interfaces on the Zorro expansion
          bus (M-Tech E-Matrix 530 expansion card).
          Say Y if you have an Amiga with a Gayle IDE interface and want to use
          IDE devices (hard disks, CD-ROM drives, etc.) that are connected to
          it.
          Note that you also have to enable Zorro bus support if you want to
          use Gayle IDE interfaces on the Zorro expansion bus.

config BLK_DEV_IDEDOUBLER
        bool "Amiga IDE Doubler support (EXPERIMENTAL)"
        depends on BLK_DEV_GAYLE && EXPERIMENTAL
        ---help---
          This driver provides support for the so-called `IDE doublers' (made
          by various manufacturers, e.g. Eyetech) that can be connected to
          the on-board IDE interface of some Amiga models. Using such an IDE
          doubler, you can connect up to four instead of two IDE devices to
          the Amiga's on-board IDE interface.

          Note that the normal Amiga Gayle IDE driver may not work correctly
          if you have an IDE doubler and don't enable this driver!

          Say Y if you have an IDE doubler.  The driver is enabled at kernel
          runtime using the "ide=doubler" kernel boot parameter.

config BLK_DEV_BUDDHA
        tristate "Buddha/Catweasel/X-Surf IDE interface support (EXPERIMENTAL)"
        depends on ZORRO && EXPERIMENTAL
        help
          This is the IDE driver for the IDE interfaces on the Buddha, Catweasel
          and X-Surf expansion boards.  It supports up to two interfaces on the
          Buddha, three on the Catweasel and two on the X-Surf.

          Say Y if you have a Buddha or Catweasel expansion board and want to
          use IDE devices (hard disks, CD-ROM drives, etc.) that are connected
          to one of its IDE interfaces.

config BLK_DEV_FALCON_IDE
        tristate "Falcon IDE interface support"
        depends on ATARI
        help
          This is the IDE driver for the on-board IDE interface on the Atari
          Falcon. Say Y if you have a Falcon and want to use IDE devices (hard
          disks, CD-ROM drives, etc.) that are connected to the on-board IDE
          interface.

config BLK_DEV_MAC_IDE
        tristate "Macintosh Quadra/Powerbook IDE interface support"
        depends on MAC
        help
          This is the IDE driver for the on-board IDE interface on some m68k
          Macintosh models. It supports both the `Quadra style' (used in
          Quadra/ Centris 630 and Performa 588 models) and `Powerbook style'
          (used in the Powerbook 150 and 190 models) IDE interface.

          Say Y if you have such an Macintosh model and want to use IDE
          devices (hard disks, CD-ROM drives, etc.) that are connected to the
          on-board IDE interface.

config BLK_DEV_Q40IDE
        tristate "Q40/Q60 IDE interface support"
        depends on Q40
        help
          Enable the on-board IDE controller in the Q40/Q60.  This should
          normally be on; disable it only if you are running a custom hard
          drive subsystem through an expansion card.

config BLK_DEV_MPC8xx_IDE
        tristate "MPC8xx IDE support"
        depends on 8xx && (LWMON || IVMS8 || IVML24 || TQM8xxL) && IDE=y && BLK_DEV_IDE=y && !PPC_MERGE
        help
          This option provides support for IDE on Motorola MPC8xx Systems.
          Please see 'Type of MPC8xx IDE interface' for details.

          If unsure, say N.

choice
        prompt "Type of MPC8xx IDE interface"
        depends on BLK_DEV_MPC8xx_IDE
        default IDE_8xx_PCCARD

config IDE_8xx_PCCARD
        bool "8xx_PCCARD"
        ---help---
          Select how the IDE devices are connected to the MPC8xx system:

          8xx_PCCARD uses the 8xx internal PCMCIA interface in combination
          with a PC Card (e.g. ARGOSY portable Hard Disk Adapter),
          ATA PC Card HDDs or ATA PC Flash Cards (example: TQM8xxL
          systems)

          8xx_DIRECT is used for directly connected IDE devices using the 8xx
          internal PCMCIA interface (example: IVMS8 systems)

          EXT_DIRECT is used for IDE devices directly connected to the 8xx
          bus using some glue logic, but _not_ the 8xx internal
          PCMCIA interface (example: IDIF860 systems)

config IDE_8xx_DIRECT
        bool "8xx_DIRECT"

config IDE_EXT_DIRECT
        bool "EXT_DIRECT"

endchoice

# no isa -> no vlb
if ISA

comment "Other IDE chipsets support"
comment "Note: most of these also require special kernel boot parameters"

config BLK_DEV_4DRIVES
        bool "Generic 4 drives/port support"
        help
          Certain older chipsets, including the Tekram 690CD, use a single set
          of I/O ports at 0x1f0 to control up to four drives, instead of the
          customary two drives per port. Support for this can be enabled at
          runtime using the "ide0=four" kernel boot parameter if you say Y
          here.

config BLK_DEV_ALI14XX
        tristate "ALI M14xx support"
        help
          This driver is enabled at runtime using the "ali14xx.probe" kernel
          boot parameter.  It enables support for the secondary IDE interface
          of the ALI M1439/1443/1445/1487/1489 chipsets, and permits faster
          I/O speeds to be set as well.  See the files
          <file:Documentation/ide.txt> and <file:drivers/ide/legacy/ali14xx.c>
          for more info.

config BLK_DEV_DTC2278
        tristate "DTC-2278 support"
        help
          This driver is enabled at runtime using the "dtc2278.probe" kernel
          boot parameter. It enables support for the secondary IDE interface
          of the DTC-2278 card, and permits faster I/O speeds to be set as
          well. See the <file:Documentation/ide.txt> and
          <file:drivers/ide/legacy/dtc2278.c> files for more info.

config BLK_DEV_HT6560B
        tristate "Holtek HT6560B support"
        help
          This driver is enabled at runtime using the "ht6560b.probe" kernel
          boot parameter. It enables support for the secondary IDE interface
          of the Holtek card, and permits faster I/O speeds to be set as well.
          See the <file:Documentation/ide.txt> and
          <file:drivers/ide/legacy/ht6560b.c> files for more info.

config BLK_DEV_QD65XX
        tristate "QDI QD65xx support"
        help
          This driver is enabled at runtime using the "qd65xx.probe" kernel
          boot parameter.  It permits faster I/O speeds to be set.  See the
          <file:Documentation/ide.txt> and <file:drivers/ide/legacy/qd65xx.c>
          for more info.

config BLK_DEV_UMC8672
        tristate "UMC-8672 support"
        help
          This driver is enabled at runtime using the "umc8672.probe" kernel
          boot parameter. It enables support for the secondary IDE interface
          of the UMC-8672, and permits faster I/O speeds to be set as well.
          See the files <file:Documentation/ide.txt> and
          <file:drivers/ide/legacy/umc8672.c> for more info.

endif

config BLK_DEV_IDEDMA
        def_bool BLK_DEV_IDEDMA_PCI || BLK_DEV_IDEDMA_PMAC || BLK_DEV_IDEDMA_ICS || BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA

config IDE_ARCH_OBSOLETE_INIT
        def_bool ALPHA || (ARM && !ARCH_L7200) || BLACKFIN || X86 || IA64 || M32R || MIPS || PARISC || PPC || (SUPERH64 && BLK_DEV_IDEPCI) || SPARC

endif

config BLK_DEV_HD_ONLY
        bool "Old hard disk (MFM/RLL/IDE) driver"
        depends on BLK_DEV_IDE=n
        help
          There are two drivers for MFM/RLL/IDE hard disks. Most people use
          the newer enhanced driver, but this old one is still around for two
          reasons. Some older systems have strange timing problems and seem to
          work only with the old driver (which itself does not work with some
          newer systems). The other reason is that the old driver is smaller,
          since it lacks the enhanced functionality of the new one. This makes
          it a good choice for systems with very tight memory restrictions, or
          for systems with only older MFM/RLL/ESDI drives. Choosing the old
          driver can save 13 KB or so of kernel memory.

          If you are unsure, then just choose the Enhanced IDE/MFM/RLL driver
          instead of this one. For more detailed information, read the
          Disk-HOWTO, available from
          <http://www.tldp.org/docs.html#howto>.

config BLK_DEV_HD
        def_bool BLK_DEV_HD_IDE || BLK_DEV_HD_ONLY

endif # IDE