xref: /linux/drivers/scsi/Kconfig (revision dbfe54a9c9a9e31cdf71704e4e70d10d22a57264)

menu "SCSI device support"

config RAID_ATTRS
	tristate "RAID Transport Class"
	default n
	depends on BLOCK
	---help---
	  Provides RAID

config SCSI
	tristate "SCSI device support"
	depends on BLOCK
	select SCSI_DMA if HAS_DMA
	---help---
	  If you want to use a SCSI hard disk, SCSI tape drive, SCSI CD-ROM or
	  any other SCSI device under Linux, say Y and make sure that you know
	  the name of your SCSI host adapter (the card inside your computer
	  that "speaks" the SCSI protocol, also called SCSI controller),
	  because you will be asked for it.

	  You also need to say Y here if you have a device which speaks
	  the SCSI protocol.  Examples of this include the parallel port
	  version of the IOMEGA ZIP drive, USB storage devices, Fibre
	  Channel, FireWire storage and the IDE-SCSI emulation driver.

	  To compile this driver as a module, choose M here and read
	  <file:Documentation/scsi/scsi.txt>.
	  The module will be called scsi_mod.

	  However, do not compile this as a module if your root file system
	  (the one containing the directory /) is located on a SCSI device.

config SCSI_DMA
	bool
	default n

config SCSI_TGT
	tristate "SCSI target support"
	depends on SCSI && EXPERIMENTAL
	---help---
	  If you want to use SCSI target mode drivers enable this option.
	  If you choose M, the module will be called scsi_tgt.

config SCSI_NETLINK
	bool
	default	n
	select NET

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  In Linux 2.6 this has been superseded by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

	  If unsure say Y.

comment "SCSI support type (disk, tape, CD-ROM)"
	depends on SCSI

config BLK_DEV_SD
	tristate "SCSI disk support"
	depends on SCSI
	---help---
	  If you want to use SCSI hard disks, Fibre Channel disks,
	  Serial ATA (SATA) or Parallel ATA (PATA) hard disks,
	  USB storage or the SCSI or parallel port version of
	  the IOMEGA ZIP drive, say Y and read the SCSI-HOWTO,
	  the Disk-HOWTO and the Multi-Disk-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>. This is NOT for SCSI
	  CD-ROMs.

	  To compile this driver as a module, choose M here and read
	  <file:Documentation/scsi/scsi.txt>.
	  The module will be called sd_mod.

	  Do not compile this driver as a module if your root file system
	  (the one containing the directory /) is located on a SCSI disk.
	  In this case, do not compile the driver for your SCSI host adapter
	  (below) as a module either.

config CHR_DEV_ST
	tristate "SCSI tape support"
	depends on SCSI
	---help---
	  If you want to use a SCSI tape drive under Linux, say Y and read the
	  SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>, and
	  <file:Documentation/scsi/st.txt> in the kernel source.  This is NOT
	  for SCSI CD-ROMs.

	  To compile this driver as a module, choose M here and read
	  <file:Documentation/scsi/scsi.txt>. The module will be called st.

config CHR_DEV_OSST
	tristate "SCSI OnStream SC-x0 tape support"
	depends on SCSI
	---help---
	  The OnStream SC-x0 SCSI tape drives cannot be driven by the
	  standard st driver, but instead need this special osst driver and
	  use the  /dev/osstX char device nodes (major 206).  Via usb-storage
	  and ide-scsi, you may be able to drive the USB-x0 and DI-x0 drives
	  as well.  Note that there is also a second generation of OnStream
	  tape drives (ADR-x0) that supports the standard SCSI-2 commands for
	  tapes (QIC-157) and can be driven by the standard driver st.
	  For more information, you may have a look at the SCSI-HOWTO
	  <http://www.tldp.org/docs.html#howto>  and
	  <file:Documentation/scsi/osst.txt>  in the kernel source.
	  More info on the OnStream driver may be found on
	  <http://linux1.onstream.nl/test/>
	  Please also have a look at the standard st docu, as most of it
	  applies to osst as well.

	  To compile this driver as a module, choose M here and read
	  <file:Documentation/scsi/scsi.txt>. The module will be called osst.

config BLK_DEV_SR
	tristate "SCSI CDROM support"
	depends on SCSI
	---help---
	  If you want to use a SCSI or FireWire CD-ROM under Linux,
	  say Y and read the SCSI-HOWTO and the CDROM-HOWTO at
	  <http://www.tldp.org/docs.html#howto>. Also make sure to say
	  Y or M to "ISO 9660 CD-ROM file system support" later.

	  To compile this driver as a module, choose M here and read
	  <file:Documentation/scsi/scsi.txt>.
	  The module will be called sr_mod.

config BLK_DEV_SR_VENDOR
	bool "Enable vendor-specific extensions (for SCSI CDROM)"
	depends on BLK_DEV_SR
	help
	  This enables the usage of vendor specific SCSI commands. This is
	  required to support multisession CDs with old NEC/TOSHIBA cdrom
	  drives (and HP Writers). If you have such a drive and get the first
	  session only, try saying Y here; everybody else says N.

config CHR_DEV_SG
	tristate "SCSI generic support"
	depends on SCSI
	---help---
	  If you want to use SCSI scanners, synthesizers or CD-writers or just
	  about anything having "SCSI" in its name other than hard disks,
	  CD-ROMs or tapes, say Y here. These won't be supported by the kernel
	  directly, so you need some additional software which knows how to
	  talk to these devices using the SCSI protocol:

	  For scanners, look at SANE (<http://www.mostang.com/sane/>). For CD
	  writer software look at Cdrtools
	  (<http://www.fokus.gmd.de/research/cc/glone/employees/joerg.schilling/private/cdrecord.html>)
	  and for burning a "disk at once": CDRDAO
	  (<http://cdrdao.sourceforge.net/>). Cdparanoia is a high
	  quality digital reader of audio CDs (<http://www.xiph.org/paranoia/>).
	  For other devices, it's possible that you'll have to write the
	  driver software yourself. Please read the file
	  <file:Documentation/scsi/scsi-generic.txt> for more information.

	  To compile this driver as a module, choose M here and read
	  <file:Documentation/scsi/scsi.txt>. The module will be called sg.

	  If unsure, say N.

config CHR_DEV_SCH
	tristate "SCSI media changer support"
	depends on SCSI
	---help---
	  This is a driver for SCSI media changers.  Most common devices are
	  tape libraries and MOD/CDROM jukeboxes.  *Real* jukeboxes, you
	  don't need this for those tiny 6-slot cdrom changers.  Media
	  changers are listed as "Type: Medium Changer" in /proc/scsi/scsi.
	  If you have such hardware and want to use it with linux, say Y
	  here.  Check <file:Documentation/scsi/scsi-changer.txt> for details.

	  If you want to compile this as a module ( = code which can be
	  inserted in and removed from the running kernel whenever you want),
	  say M here and read <file:Documentation/kbuild/modules.txt> and
	  <file:Documentation/scsi/scsi.txt>. The module will be called ch.o.
	  If unsure, say N.

config SCSI_ENCLOSURE
	tristate "SCSI Enclosure Support"
	depends on SCSI && ENCLOSURE_SERVICES
	help
	  Enclosures are devices sitting on or in SCSI backplanes that
	  manage devices.  If you have a disk cage, the chances are that
	  it has an enclosure device.  Selecting this option will just allow
	  certain enclosure conditions to be reported and is not required.

comment "Some SCSI devices (e.g. CD jukebox) support multiple LUNs"
	depends on SCSI

config SCSI_MULTI_LUN
	bool "Probe all LUNs on each SCSI device"
	depends on SCSI
	help
	  If you have a SCSI device that supports more than one LUN (Logical
	  Unit Number), e.g. a CD jukebox, and only one LUN is detected, you
	  can say Y here to force the SCSI driver to probe for multiple LUNs.
	  A SCSI device with multiple LUNs acts logically like multiple SCSI
	  devices. The vast majority of SCSI devices have only one LUN, and
	  so most people can say N here. The max_luns boot/module parameter
	  allows to override this setting.

config SCSI_CONSTANTS
	bool "Verbose SCSI error reporting (kernel size +=12K)"
	depends on SCSI
	help
	  The error messages regarding your SCSI hardware will be easier to
	  understand if you say Y here; it will enlarge your kernel by about
	  12 KB. If in doubt, say Y.

config SCSI_LOGGING
	bool "SCSI logging facility"
	depends on SCSI
	---help---
	  This turns on a logging facility that can be used to debug a number
	  of SCSI related problems.

	  If you say Y here, no logging output will appear by default, but you
	  can enable logging by saying Y to "/proc file system support" and
	  "Sysctl support" below and executing the command

	  echo "scsi log token [level]" > /proc/scsi/scsi

	  at boot time after the /proc file system has been mounted.

	  There are a number of things that can be used for 'token' (you can
	  find them in the source: <file:drivers/scsi/scsi.c>), and this
	  allows you to select the types of information you want, and the
	  level allows you to select the level of verbosity.

	  If you say N here, it may be harder to track down some types of SCSI
	  problems. If you say Y here your kernel will be somewhat larger, but
	  there should be no noticeable performance impact as long as you have
	  logging turned off.

config SCSI_SCAN_ASYNC
	bool "Asynchronous SCSI scanning"
	depends on SCSI
	help
	  The SCSI subsystem can probe for devices while the rest of the
	  system continues booting, and even probe devices on different
	  busses in parallel, leading to a significant speed-up.

	  If you have built SCSI as modules, enabling this option can
	  be a problem as the devices may not have been found by the
	  time your system expects them to have been.  You can load the
	  scsi_wait_scan module to ensure that all scans have completed.
	  If you build your SCSI drivers into the kernel, then everything
	  will work fine if you say Y here.

	  You can override this choice by specifying "scsi_mod.scan=sync"
	  or async on the kernel's command line.

config SCSI_WAIT_SCAN
	tristate
	default m
	depends on SCSI
	depends on MODULES

menu "SCSI Transports"
	depends on SCSI

config SCSI_SPI_ATTRS
	tristate "Parallel SCSI (SPI) Transport Attributes"
	depends on SCSI
	help
	  If you wish to export transport-specific information about
	  each attached SCSI device to sysfs, say Y.  Otherwise, say N.

config SCSI_FC_ATTRS
	tristate "FiberChannel Transport Attributes"
	depends on SCSI
	select SCSI_NETLINK
	help
	  If you wish to export transport-specific information about
	  each attached FiberChannel device to sysfs, say Y.
	  Otherwise, say N.

config SCSI_FC_TGT_ATTRS
	bool "SCSI target support for FiberChannel Transport Attributes"
	depends on SCSI_FC_ATTRS
	depends on SCSI_TGT = y || SCSI_TGT = SCSI_FC_ATTRS
	help
		If you want to use SCSI target mode drivers enable this option.

config SCSI_ISCSI_ATTRS
	tristate "iSCSI Transport Attributes"
	depends on SCSI && NET
	help
	  If you wish to export transport-specific information about
	  each attached iSCSI device to sysfs, say Y.
	  Otherwise, say N.

config SCSI_SAS_ATTRS
	tristate "SAS Transport Attributes"
	depends on SCSI && BLK_DEV_BSG
	help
	  If you wish to export transport-specific information about
	  each attached SAS device to sysfs, say Y.

source "drivers/scsi/libsas/Kconfig"

config SCSI_SRP_ATTRS
	tristate "SRP Transport Attributes"
	depends on SCSI
	help
	  If you wish to export transport-specific information about
	  each attached SRP device to sysfs, say Y.

config SCSI_SRP_TGT_ATTRS
	bool "SCSI target support for SRP Transport Attributes"
	depends on SCSI_SRP_ATTRS
	depends on SCSI_TGT = y || SCSI_TGT = SCSI_SRP_ATTRS
	help
		If you want to use SCSI target mode drivers enable this option.

endmenu

menuconfig SCSI_LOWLEVEL
	bool "SCSI low-level drivers"
	depends on SCSI!=n
	default y

if SCSI_LOWLEVEL && SCSI

config ISCSI_TCP
	tristate "iSCSI Initiator over TCP/IP"
	depends on SCSI && INET
	select CRYPTO
	select CRYPTO_MD5
	select CRYPTO_CRC32C
	select SCSI_ISCSI_ATTRS
	help
	 The iSCSI Driver provides a host with the ability to access storage
	 through an IP network. The driver uses the iSCSI protocol to transport
	 SCSI requests and responses over a TCP/IP network between the host
	 (the "initiator") and "targets".  Architecturally, the iSCSI driver
	 combines with the host's TCP/IP stack, network drivers, and Network
	 Interface Card (NIC) to provide the same functions as a SCSI or a
	 Fibre Channel (FC) adapter driver with a Host Bus Adapter (HBA).

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

	 The userspace component needed to initialize the driver, documentation,
	 and sample configuration files can be found here:

	 http://open-iscsi.org

config SGIWD93_SCSI
	tristate "SGI WD93C93 SCSI Driver"
	depends on SGI_HAS_WD93 && SCSI
  	help
	  If you have a Western Digital WD93 SCSI controller on
	  an SGI MIPS system, say Y.  Otherwise, say N.

config BLK_DEV_3W_XXXX_RAID
	tristate "3ware 5/6/7/8xxx ATA-RAID support"
	depends on PCI && SCSI
	help
	  3ware is the only hardware ATA-Raid product in Linux to date.
	  This card is 2,4, or 8 channel master mode support only.
	  SCSI support required!!!

	  <http://www.3ware.com/>

	  Please read the comments at the top of
	  <file:drivers/scsi/3w-xxxx.c>.

config SCSI_3W_9XXX
	tristate "3ware 9xxx SATA-RAID support"
	depends on PCI && SCSI
	help
	  This driver supports the 9000 series 3ware SATA-RAID cards.

	  <http://www.amcc.com>

	  Please read the comments at the top of
	  <file:drivers/scsi/3w-9xxx.c>.

config SCSI_7000FASST
	tristate "7000FASST SCSI support"
	depends on ISA && SCSI && ISA_DMA_API
	select CHECK_SIGNATURE
	help
	  This driver supports the Western Digital 7000 SCSI host adapter
	  family.  Some information is in the source:
	  <file:drivers/scsi/wd7000.c>.

	  To compile this driver as a module, choose M here: the
	  module will be called wd7000.

config SCSI_ACARD
	tristate "ACARD SCSI support"
	depends on PCI && SCSI
	help
	  This driver supports the ACARD SCSI host adapter.
	  Support Chip <ATP870 ATP876 ATP880 ATP885>
	  To compile this driver as a module, choose M here: the
	  module will be called atp870u.

config SCSI_AHA152X
	tristate "Adaptec AHA152X/2825 support"
	depends on ISA && SCSI && !64BIT
	select SCSI_SPI_ATTRS
	select CHECK_SIGNATURE
	---help---
	  This is a driver for the AHA-1510, AHA-1520, AHA-1522, and AHA-2825
	  SCSI host adapters. It also works for the AVA-1505, but the IRQ etc.
	  must be manually specified in this case.

	  It is explained in section 3.3 of the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>. You might also want to
	  read the file <file:Documentation/scsi/aha152x.txt>.

	  To compile this driver as a module, choose M here: the
	  module will be called aha152x.

config SCSI_AHA1542
	tristate "Adaptec AHA1542 support"
	depends on ISA && SCSI && ISA_DMA_API
	---help---
	  This is support for a SCSI host adapter.  It is explained in section
	  3.4 of the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.  Note that Trantor was
	  purchased by Adaptec, and some former Trantor products are being
	  sold under the Adaptec name.  If it doesn't work out of the box, you
	  may have to change some settings in <file:drivers/scsi/aha1542.h>.

	  To compile this driver as a module, choose M here: the
	  module will be called aha1542.

config SCSI_AHA1740
	tristate "Adaptec AHA1740 support"
	depends on EISA && SCSI
	---help---
	  This is support for a SCSI host adapter.  It is explained in section
	  3.5 of the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.  If it doesn't work out
	  of the box, you may have to change some settings in
	  <file:drivers/scsi/aha1740.h>.

	  To compile this driver as a module, choose M here: the
	  module will be called aha1740.

config SCSI_AACRAID
	tristate "Adaptec AACRAID support"
	depends on SCSI && PCI
	help
	  This driver supports a variety of Dell, HP, Adaptec, IBM and
	  ICP storage products. For a list of supported products, refer
	  to <file:Documentation/scsi/aacraid.txt>.

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


source "drivers/scsi/aic7xxx/Kconfig.aic7xxx"

config SCSI_AIC7XXX_OLD
	tristate "Adaptec AIC7xxx support (old driver)"
	depends on (ISA || EISA || PCI ) && SCSI
	help
	  WARNING This driver is an older aic7xxx driver and is no longer
	  under active development.  Adaptec, Inc. is writing a new driver to
	  take the place of this one, and it is recommended that whenever
	  possible, people should use the new Adaptec written driver instead
	  of this one.  This driver will eventually be phased out entirely.

	  This is support for the various aic7xxx based Adaptec SCSI
	  controllers. These include the 274x EISA cards; 284x VLB cards;
	  2902, 2910, 293x, 294x, 394x, 3985 and several other PCI and
	  motherboard based SCSI controllers from Adaptec. It does not support
	  the AAA-13x RAID controllers from Adaptec, nor will it likely ever
	  support them. It does not support the 2920 cards from Adaptec that
	  use the Future Domain SCSI controller chip. For those cards, you
	  need the "Future Domain 16xx SCSI support" driver.

	  In general, if the controller is based on an Adaptec SCSI controller
	  chip from the aic777x series or the aic78xx series, this driver
	  should work. The only exception is the 7810 which is specifically
	  not supported (that's the RAID controller chip on the AAA-13x
	  cards).

	  Note that the AHA2920 SCSI host adapter is *not* supported by this
	  driver; choose "Future Domain 16xx SCSI support" instead if you have
	  one of those.

	  Information on the configuration options for this controller can be
	  found by checking the help file for each of the available
	  configuration options. You should read
	  <file:Documentation/scsi/aic7xxx_old.txt> at a minimum before
	  contacting the maintainer with any questions.  The SCSI-HOWTO,
	  available from <http://www.tldp.org/docs.html#howto>, can also
	  be of great help.

	  To compile this driver as a module, choose M here: the
	  module will be called aic7xxx_old.

source "drivers/scsi/aic7xxx/Kconfig.aic79xx"
source "drivers/scsi/aic94xx/Kconfig"

config SCSI_DPT_I2O
	tristate "Adaptec I2O RAID support "
	depends on SCSI && PCI && VIRT_TO_BUS
	help
	  This driver supports all of Adaptec's I2O based RAID controllers as
	  well as the DPT SmartRaid V cards.  This is an Adaptec maintained
	  driver by Deanna Bonds.  See <file:Documentation/scsi/dpti.txt>.

	  To compile this driver as a module, choose M here: the
	  module will be called dpt_i2o.

config SCSI_ADVANSYS
	tristate "AdvanSys SCSI support"
	depends on SCSI && VIRT_TO_BUS
	depends on ISA || EISA || PCI
	help
	  This is a driver for all SCSI host adapters manufactured by
	  AdvanSys. It is documented in the kernel source in
	  <file:drivers/scsi/advansys.c>.

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

config SCSI_IN2000
	tristate "Always IN2000 SCSI support"
	depends on ISA && SCSI
	help
	  This is support for an ISA bus SCSI host adapter.  You'll find more
	  information in <file:Documentation/scsi/in2000.txt>. If it doesn't work
	  out of the box, you may have to change the jumpers for IRQ or
	  address selection.

	  To compile this driver as a module, choose M here: the
	  module will be called in2000.

config SCSI_ARCMSR
	tristate "ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID Host Adapter"
	depends on PCI && SCSI
	help
	  This driver supports all of ARECA's SATA/SAS RAID controller cards.
	  This is an ARECA-maintained driver by Erich Chen.
	  If you have any problems, please mail to: <erich@areca.com.tw>.
	  Areca supports Linux RAID config tools.
	  Please link <http://www.areca.com.tw>

	  To compile this driver as a module, choose M here: the
	  module will be called arcmsr (modprobe arcmsr).

config SCSI_ARCMSR_AER
	bool "Enable PCI Error Recovery Capability in Areca Driver(ARCMSR)"
	depends on SCSI_ARCMSR && PCIEAER
	default n
	help
	  The advanced error reporting(AER) capability is "NOT" provided by
	  ARC1200/1201/1202 SATA RAID controllers cards.
	  If your card is one of ARC1200/1201/1202, please use the default setting, n.
	  If your card is other models, you could pick it
	  on condition that the kernel version is greater than 2.6.19.
	  This function is maintained driver by Nick Cheng. If you have any
	  problems or suggestion, you are welcome to contact with <nick.cheng@areca.com.tw>.
	  To enable this function, choose Y here.

source "drivers/scsi/megaraid/Kconfig.megaraid"

config SCSI_HPTIOP
	tristate "HighPoint RocketRAID 3xxx/4xxx Controller support"
	depends on SCSI && PCI
	help
	  This option enables support for HighPoint RocketRAID 3xxx/4xxx
	  controllers.

	  To compile this driver as a module, choose M here; the module
	  will be called hptiop. If unsure, say N.

config SCSI_BUSLOGIC
	tristate "BusLogic SCSI support"
	depends on (PCI || ISA || MCA) && SCSI && ISA_DMA_API && VIRT_TO_BUS
	---help---
	  This is support for BusLogic MultiMaster and FlashPoint SCSI Host
	  Adapters. Consult the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>, and the files
	  <file:Documentation/scsi/BusLogic.txt> and
	  <file:Documentation/scsi/FlashPoint.txt> for more information.
	  Note that support for FlashPoint is only available for 32-bit
	  x86 configurations.

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

config SCSI_FLASHPOINT
	bool "FlashPoint support"
	depends on SCSI_BUSLOGIC && PCI && X86_32
	help
	  This option allows you to add FlashPoint support to the
	  BusLogic SCSI driver. The FlashPoint SCCB Manager code is
	  substantial, so users of MultiMaster Host Adapters may not
	  wish to include it.

config SCSI_DMX3191D
	tristate "DMX3191D SCSI support"
	depends on PCI && SCSI
	select SCSI_SPI_ATTRS
	help
	  This is support for Domex DMX3191D SCSI Host Adapters.

	  To compile this driver as a module, choose M here: the
	  module will be called dmx3191d.

config SCSI_DTC3280
	tristate "DTC3180/3280 SCSI support"
	depends on ISA && SCSI
	select SCSI_SPI_ATTRS
	select CHECK_SIGNATURE
	help
	  This is support for DTC 3180/3280 SCSI Host Adapters.  Please read
	  the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>, and the file
	  <file:Documentation/scsi/dtc3x80.txt>.

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

config SCSI_EATA
	tristate "EATA ISA/EISA/PCI (DPT and generic EATA/DMA-compliant boards) support"
	depends on (ISA || EISA || PCI) && SCSI && ISA_DMA_API
	---help---
	  This driver supports all EATA/DMA-compliant SCSI host adapters.  DPT
	  ISA and all EISA I/O addresses are probed looking for the "EATA"
	  signature. The addresses of all the PCI SCSI controllers reported
          by the PCI subsystem are probed as well.

	  You want to read the start of <file:drivers/scsi/eata.c> and the
	  SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.

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

config SCSI_EATA_TAGGED_QUEUE
	bool "enable tagged command queueing"
	depends on SCSI_EATA
	help
	  This is a feature of SCSI-2 which improves performance: the host
	  adapter can send several SCSI commands to a device's queue even if
	  previous commands haven't finished yet.
	  This is equivalent to the "eata=tc:y" boot option.

config SCSI_EATA_LINKED_COMMANDS
	bool "enable elevator sorting"
	depends on SCSI_EATA
	help
	  This option enables elevator sorting for all probed SCSI disks and
	  CD-ROMs. It definitely reduces the average seek distance when doing
	  random seeks, but this does not necessarily result in a noticeable
	  performance improvement: your mileage may vary...
	  This is equivalent to the "eata=lc:y" boot option.

config SCSI_EATA_MAX_TAGS
	int "maximum number of queued commands"
	depends on SCSI_EATA
	default "16"
	help
	  This specifies how many SCSI commands can be maximally queued for
	  each probed SCSI device. You should reduce the default value of 16
	  only if you have disks with buggy or limited tagged command support.
	  Minimum is 2 and maximum is 62. This value is also the window size
	  used by the elevator sorting option above. The effective value used
	  by the driver for each probed SCSI device is reported at boot time.
	  This is equivalent to the "eata=mq:8" boot option.

config SCSI_EATA_PIO
	tristate "EATA-PIO (old DPT PM2001, PM2012A) support"
	depends on (ISA || EISA || PCI) && SCSI && BROKEN
	---help---
	  This driver supports all EATA-PIO protocol compliant SCSI Host
	  Adapters like the DPT PM2001 and the PM2012A.  EATA-DMA compliant
	  host adapters could also use this driver but are discouraged from
	  doing so, since this driver only supports hard disks and lacks
	  numerous features.  You might want to have a look at the SCSI-HOWTO,
	  available from <http://www.tldp.org/docs.html#howto>.

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

config SCSI_FUTURE_DOMAIN
	tristate "Future Domain 16xx SCSI/AHA-2920A support"
	depends on (ISA || PCI) && SCSI
	select CHECK_SIGNATURE
	---help---
	  This is support for Future Domain's 16-bit SCSI host adapters
	  (TMC-1660/1680, TMC-1650/1670, TMC-3260, TMC-1610M/MER/MEX) and
	  other adapters based on the Future Domain chipsets (Quantum
	  ISA-200S, ISA-250MG; Adaptec AHA-2920A; and at least one IBM board).
	  It is explained in section 3.7 of the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.

	  NOTE: Newer Adaptec AHA-2920C boards use the Adaptec AIC-7850 chip
	  and should use the aic7xxx driver ("Adaptec AIC7xxx chipset SCSI
	  controller support"). This Future Domain driver works with the older
	  Adaptec AHA-2920A boards with a Future Domain chip on them.

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

config SCSI_FD_MCS
	tristate "Future Domain MCS-600/700 SCSI support"
	depends on MCA_LEGACY && SCSI
	---help---
	  This is support for Future Domain MCS 600/700 MCA SCSI adapters.
	  Some PS/2 computers are equipped with IBM Fast SCSI Adapter/A which
	  is identical to the MCS 700 and hence also supported by this driver.
	  This driver also supports the Reply SB16/SCSI card (the SCSI part).
	  It supports multiple adapters in the same system.

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

config SCSI_GDTH
	tristate "Intel/ICP (former GDT SCSI Disk Array) RAID Controller support"
	depends on (ISA || EISA || PCI) && SCSI && ISA_DMA_API
	---help---
	  Formerly called GDT SCSI Disk Array Controller Support.

	  This is a driver for RAID/SCSI Disk Array Controllers (EISA/ISA/PCI)
	  manufactured by Intel Corporation/ICP vortex GmbH. It is documented
	  in the kernel source in <file:drivers/scsi/gdth.c> and
	  <file:drivers/scsi/gdth.h>.

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

config SCSI_GENERIC_NCR5380
	tristate "Generic NCR5380/53c400 SCSI PIO support"
	depends on ISA && SCSI
	select SCSI_SPI_ATTRS
	---help---
	  This is a driver for the old NCR 53c80 series of SCSI controllers
	  on boards using PIO. Most boards such as the Trantor T130 fit this
	  category, along with a large number of ISA 8bit controllers shipped
	  for free with SCSI scanners. If you have a PAS16, T128 or DMX3191
	  you should select the specific driver for that card rather than
	  generic 5380 support.

	  It is explained in section 3.8 of the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.  If it doesn't work out
	  of the box, you may have to change some settings in
	  <file:drivers/scsi/g_NCR5380.h>.

	  To compile this driver as a module, choose M here: the
	  module will be called g_NCR5380.

config SCSI_GENERIC_NCR5380_MMIO
	tristate "Generic NCR5380/53c400 SCSI MMIO support"
	depends on ISA && SCSI
	select SCSI_SPI_ATTRS
	---help---
	  This is a driver for the old NCR 53c80 series of SCSI controllers
	  on boards using memory mapped I/O.
	  It is explained in section 3.8 of the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.  If it doesn't work out
	  of the box, you may have to change some settings in
	  <file:drivers/scsi/g_NCR5380.h>.

	  To compile this driver as a module, choose M here: the
	  module will be called g_NCR5380_mmio.

config SCSI_GENERIC_NCR53C400
	bool "Enable NCR53c400 extensions"
	depends on SCSI_GENERIC_NCR5380
	help
	  This enables certain optimizations for the NCR53c400 SCSI cards.
	  You might as well try it out.  Note that this driver will only probe
	  for the Trantor T130B in its default configuration; you might have
	  to pass a command line option to the kernel at boot time if it does
	  not detect your card.  See the file
	  <file:Documentation/scsi/g_NCR5380.txt> for details.

config SCSI_IBMMCA
	tristate "IBMMCA SCSI support"
	depends on MCA && SCSI
	---help---
	  This is support for the IBM SCSI adapter found in many of the PS/2
	  series computers.  These machines have an MCA bus, so you need to
	  answer Y to "MCA support" as well and read
	  <file:Documentation/mca.txt>.

	  If the adapter isn't found during boot (a common problem for models
	  56, 57, 76, and 77) you'll need to use the 'ibmmcascsi=<pun>' kernel
	  option, where <pun> is the id of the SCSI subsystem (usually 7, but
	  if that doesn't work check your reference diskette).  Owners of
	  model 95 with a LED-matrix-display can in addition activate some
	  activity info like under OS/2, but more informative, by setting
	  'ibmmcascsi=display' as an additional kernel parameter.  Try "man
	  bootparam" or see the documentation of your boot loader about how to
	  pass options to the kernel.

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

config IBMMCA_SCSI_ORDER_STANDARD
	bool "Standard SCSI-order"
	depends on SCSI_IBMMCA
	---help---
	  In the PC-world and in most modern SCSI-BIOS-setups, SCSI-hard disks
	  are assigned to the drive letters, starting with the lowest SCSI-id
	  (physical number -- pun) to be drive C:, as seen from DOS and
	  similar operating systems. When looking into papers describing the
	  ANSI-SCSI-standard, this assignment of drives appears to be wrong.
	  The SCSI-standard follows a hardware-hierarchy which says that id 7
	  has the highest priority and id 0 the lowest. Therefore, the host
	  adapters are still today everywhere placed as SCSI-id 7 by default.
	  In the SCSI-standard, the drive letters express the priority of the
	  disk. C: should be the hard disk, or a partition on it, with the
	  highest priority. This must therefore be the disk with the highest
	  SCSI-id (e.g. 6) and not the one with the lowest! IBM-BIOS kept the
	  original definition of the SCSI-standard as also industrial- and
	  process-control-machines, like VME-CPUs running under realtime-OSes
	  (e.g. LynxOS, OS9) do.

	  If you like to run Linux on your MCA-machine with the same
	  assignment of hard disks as seen from e.g. DOS or OS/2 on your
	  machine, which is in addition conformant to the SCSI-standard, you
	  must say Y here. This is also necessary for MCA-Linux users who want
	  to keep downward compatibility to older releases of the
	  IBM-MCA-SCSI-driver (older than driver-release 2.00 and older than
	  June 1997).

	  If you like to have the lowest SCSI-id assigned as drive C:, as
	  modern SCSI-BIOSes do, which does not conform to the standard, but
	  is widespread and common in the PC-world of today, you must say N
	  here. If unsure, say Y.

config IBMMCA_SCSI_DEV_RESET
	bool "Reset SCSI-devices at boottime"
	depends on SCSI_IBMMCA
	---help---
	  By default, SCSI-devices are reset when the machine is powered on.
	  However, some devices exist, like special-control-devices,
	  SCSI-CNC-machines, SCSI-printer or scanners of older type, that do
	  not reset when switched on. If you say Y here, each device connected
	  to your SCSI-bus will be issued a reset-command after it has been
	  probed, while the kernel is booting. This may cause problems with
	  more modern devices, like hard disks, which do not appreciate these
	  reset commands, and can cause your system to hang. So say Y only if
	  you know that one of your older devices needs it; N is the safe
	  answer.

config SCSI_IPS
	tristate "IBM ServeRAID support"
	depends on PCI && SCSI
	---help---
	  This is support for the IBM ServeRAID hardware RAID controllers.
	  See <http://www.developer.ibm.com/welcome/netfinity/serveraid.html>
	  for more information.  If this driver does not work correctly
	  without modification please contact the author by email at
	  <ipslinux@adaptec.com>.

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

config SCSI_IBMVSCSI
	tristate "IBM Virtual SCSI support"
	depends on PPC_PSERIES || PPC_ISERIES
	select SCSI_SRP_ATTRS
	help
	  This is the IBM POWER Virtual SCSI Client

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

config SCSI_IBMVSCSIS
	tristate "IBM Virtual SCSI Server support"
	depends on PPC_PSERIES && SCSI_SRP && SCSI_SRP_TGT_ATTRS
	help
	  This is the SRP target driver for IBM pSeries virtual environments.

	  The userspace component needed to initialize the driver and
	  documentation can be found:

	  http://stgt.berlios.de/

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

config SCSI_INITIO
	tristate "Initio 9100U(W) support"
	depends on PCI && SCSI
	help
	  This is support for the Initio 91XXU(W) SCSI host adapter.  Please
	  read the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.

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

config SCSI_INIA100
	tristate "Initio INI-A100U2W support"
	depends on PCI && SCSI
	help
	  This is support for the Initio INI-A100U2W SCSI host adapter.
	  Please read the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.

	  To compile this driver as a module, choose M here: the
	  module will be called a100u2w.

config SCSI_PPA
	tristate "IOMEGA parallel port (ppa - older drives)"
	depends on SCSI && PARPORT_PC
	---help---
	  This driver supports older versions of IOMEGA's parallel port ZIP
	  drive (a 100 MB removable media device).

	  Note that you can say N here if you have the SCSI version of the ZIP
	  drive: it will be supported automatically if you said Y to the
	  generic "SCSI disk support", above.

	  If you have the ZIP Plus drive or a more recent parallel port ZIP
	  drive (if the supplied cable with the drive is labeled "AutoDetect")
	  then you should say N here and Y to "IOMEGA parallel port (imm -
	  newer drives)", below.

	  For more information about this driver and how to use it you should
	  read the file <file:Documentation/scsi/ppa.txt>.  You should also read
	  the SCSI-HOWTO, which is available from
	  <http://www.tldp.org/docs.html#howto>.  If you use this driver,
	  you will still be able to use the parallel port for other tasks,
	  such as a printer; it is safe to compile both drivers into the
	  kernel.

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

config SCSI_IMM
	tristate "IOMEGA parallel port (imm - newer drives)"
	depends on SCSI && PARPORT_PC
	---help---
	  This driver supports newer versions of IOMEGA's parallel port ZIP
	  drive (a 100 MB removable media device).

	  Note that you can say N here if you have the SCSI version of the ZIP
	  drive: it will be supported automatically if you said Y to the
	  generic "SCSI disk support", above.

	  If you have the ZIP Plus drive or a more recent parallel port ZIP
	  drive (if the supplied cable with the drive is labeled "AutoDetect")
	  then you should say Y here; if you have an older ZIP drive, say N
	  here and Y to "IOMEGA Parallel Port (ppa - older drives)", above.

	  For more information about this driver and how to use it you should
	  read the file <file:Documentation/scsi/ppa.txt>.  You should also read
	  the SCSI-HOWTO, which is available from
	  <http://www.tldp.org/docs.html#howto>.  If you use this driver,
	  you will still be able to use the parallel port for other tasks,
	  such as a printer; it is safe to compile both drivers into the
	  kernel.

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

config SCSI_IZIP_EPP16
	bool "ppa/imm option - Use slow (but safe) EPP-16"
	depends on SCSI_PPA || SCSI_IMM
	---help---
	  EPP (Enhanced Parallel Port) is a standard for parallel ports which
	  allows them to act as expansion buses that can handle up to 64
	  peripheral devices.

	  Some parallel port chipsets are slower than their motherboard, and
	  so we have to control the state of the chipset's FIFO queue every
	  now and then to avoid data loss. This will be done if you say Y
	  here.

	  Generally, saying Y is the safe option and slows things down a bit.

config SCSI_IZIP_SLOW_CTR
	bool "ppa/imm option - Assume slow parport control register"
	depends on SCSI_PPA || SCSI_IMM
	help
	  Some parallel ports are known to have excessive delays between
	  changing the parallel port control register and good data being
	  available on the parallel port data/status register. This option
	  forces a small delay (1.0 usec to be exact) after changing the
	  control register to let things settle out. Enabling this option may
	  result in a big drop in performance but some very old parallel ports
	  (found in 386 vintage machines) will not work properly.

	  Generally, saying N is fine.

config SCSI_MVSAS
	tristate "Marvell 88SE6440 SAS/SATA support"
	depends on PCI && SCSI
	select SCSI_SAS_LIBSAS
	help
	  This driver supports Marvell SAS/SATA PCI devices.

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

config SCSI_NCR53C406A
	tristate "NCR53c406a SCSI support"
	depends on ISA && SCSI
	help
	  This is support for the NCR53c406a SCSI host adapter.  For user
	  configurable parameters, check out <file:drivers/scsi/NCR53c406a.c>
	  in the kernel source.  Also read the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.

	  To compile this driver as a module, choose M here: the
	  module will be called NCR53c406.

config SCSI_NCR_D700
	tristate "NCR Dual 700 MCA SCSI support"
	depends on MCA && SCSI
	select SCSI_SPI_ATTRS
	help
	  This is a driver for the MicroChannel Dual 700 card produced by
	  NCR and commonly used in 345x/35xx/4100 class machines.  It always
	  tries to negotiate sync and uses tag command queueing.

	  Unless you have an NCR manufactured machine, the chances are that
	  you do not have this SCSI card, so say N.

config SCSI_LASI700
	tristate "HP Lasi SCSI support for 53c700/710"
	depends on GSC && SCSI
	select SCSI_SPI_ATTRS
	help
	  This is a driver for the SCSI controller in the Lasi chip found in
	  many PA-RISC workstations & servers.  If you do not know whether you
	  have a Lasi chip, it is safe to say "Y" here.

config SCSI_SNI_53C710
	tristate "SNI RM SCSI support for 53c710"
	depends on SNI_RM && SCSI
	select SCSI_SPI_ATTRS
	select 53C700_LE_ON_BE
	help
	  This is a driver for the onboard SCSI controller found in older
	  SNI RM workstations & servers.

config 53C700_LE_ON_BE
	bool
	depends on SCSI_LASI700
	default y

config SCSI_STEX
	tristate "Promise SuperTrak EX Series support"
	depends on PCI && SCSI
	---help---
	  This driver supports Promise SuperTrak EX series storage controllers.

	  Promise provides Linux RAID configuration utility for these
	  controllers. Please visit <http://www.promise.com> to download.

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

config 53C700_BE_BUS
	bool
	depends on SCSI_A4000T || SCSI_ZORRO7XX || MVME16x_SCSI || BVME6000_SCSI
	default y

config SCSI_SYM53C8XX_2
	tristate "SYM53C8XX Version 2 SCSI support"
	depends on PCI && SCSI
	select SCSI_SPI_ATTRS
	---help---
	  This driver supports the whole NCR53C8XX/SYM53C8XX family of
	  PCI-SCSI controllers.  It also supports the subset of LSI53C10XX
	  Ultra-160 controllers that are based on the SYM53C8XX SCRIPTS
	  language.  It does not support LSI53C10XX Ultra-320 PCI-X SCSI
	  controllers; you need to use the Fusion MPT driver for that.

	  Please read <file:Documentation/scsi/sym53c8xx_2.txt> for more
	  information.

config SCSI_SYM53C8XX_DMA_ADDRESSING_MODE
	int "DMA addressing mode"
	depends on SCSI_SYM53C8XX_2
	default "1"
	---help---
	  This option only applies to PCI-SCSI chips that are PCI DAC
	  capable (875A, 895A, 896, 1010-33, 1010-66, 1000).

	  When set to 0, the driver will program the chip to only perform
	  32-bit DMA.  When set to 1, the chip will be able to perform DMA
	  to addresses up to 1TB.  When set to 2, the driver supports the
	  full 64-bit DMA address range, but can only address 16 segments
	  of 4 GB each.  This limits the total addressable range to 64 GB.

	  Most machines with less than 4GB of memory should use a setting
	  of 0 for best performance.  If your machine has 4GB of memory
	  or more, you should set this option to 1 (the default).

	  The still experimental value 2 (64 bit DMA addressing with 16
	  x 4GB segments limitation) can be used on systems that require
	  PCI address bits past bit 39 to be set for the addressing of
	  memory using PCI DAC cycles.

config SCSI_SYM53C8XX_DEFAULT_TAGS
	int "Default tagged command queue depth"
	depends on SCSI_SYM53C8XX_2
	default "16"
	help
	  This is the default value of the command queue depth the
	  driver will announce to the generic SCSI layer for devices
	  that support tagged command queueing. This value can be changed
	  from the boot command line.  This is a soft limit that cannot
	  exceed CONFIG_SCSI_SYM53C8XX_MAX_TAGS.

config SCSI_SYM53C8XX_MAX_TAGS
	int "Maximum number of queued commands"
	depends on SCSI_SYM53C8XX_2
	default "64"
	help
	  This option allows you to specify the maximum number of commands
	  that can be queued to any device, when tagged command queuing is
	  possible. The driver supports up to 256 queued commands per device.
	  This value is used as a compiled-in hard limit.

config SCSI_SYM53C8XX_MMIO
	bool "Use memory mapped IO"
	depends on SCSI_SYM53C8XX_2
	default y
	help
	  Memory mapped IO is faster than Port IO.  Most people should
	  answer Y here, but some machines may have problems.  If you have
	  to answer N here, please report the problem to the maintainer.

config SCSI_IPR
	tristate "IBM Power Linux RAID adapter support"
	depends on PCI && SCSI && ATA
	select FW_LOADER
	---help---
	  This driver supports the IBM Power Linux family RAID adapters.
	  This includes IBM pSeries 5712, 5703, 5709, and 570A, as well
	  as IBM iSeries 5702, 5703, 5709, and 570A.

config SCSI_IPR_TRACE
	bool "enable driver internal trace"
	depends on SCSI_IPR
	default y
	help
	  If you say Y here, the driver will trace all commands issued
	  to the adapter. Performance impact is minimal. Trace can be
	  dumped using /sys/bus/class/scsi_host/hostXX/trace.

config SCSI_IPR_DUMP
	bool "enable adapter dump support"
	depends on SCSI_IPR
	default y
	help
	  If you say Y here, the driver will support adapter crash dump.
	  If you enable this support, the iprdump daemon can be used
	  to capture adapter failure analysis information.

config SCSI_ZALON
	tristate "Zalon SCSI support"
	depends on GSC && SCSI
	select SCSI_SPI_ATTRS
	help
	  The Zalon is a GSC/HSC bus interface chip that sits between the
	  PA-RISC processor and the NCR 53c720 SCSI controller on C100,
	  C110, J200, J210 and some D, K & R-class machines.  It's also
	  used on the add-in Bluefish, Barracuda & Shrike SCSI cards.
	  Say Y here if you have one of these machines or cards.

config SCSI_NCR_Q720
	tristate "NCR Quad 720 MCA SCSI support"
	depends on MCA && SCSI
	select SCSI_SPI_ATTRS
	help
	  This is a driver for the MicroChannel Quad 720 card produced by
	  NCR and commonly used in 345x/35xx/4100 class machines.  It always
	  tries to negotiate sync and uses tag command queueing.

	  Unless you have an NCR manufactured machine, the chances are that
	  you do not have this SCSI card, so say N.

config SCSI_NCR53C8XX_DEFAULT_TAGS
	int "default tagged command queue depth"
	depends on SCSI_ZALON || SCSI_NCR_Q720
	default "8"
	---help---
	  "Tagged command queuing" is a feature of SCSI-2 which improves
	  performance: the host adapter can send several SCSI commands to a
	  device's queue even if previous commands haven't finished yet.
	  Because the device is intelligent, it can optimize its operations
	  (like head positioning) based on its own request queue. Some SCSI
	  devices don't implement this properly; if you want to disable this
	  feature, enter 0 or 1 here (it doesn't matter which).

	  The default value is 8 and should be supported by most hard disks.
	  This value can be overridden from the boot command line using the
	  'tags' option as follows (example):
	  'ncr53c8xx=tags:4/t2t3q16/t0u2q10' will set default queue depth to
	  4, set queue depth to 16 for target 2 and target 3 on controller 0
	  and set queue depth to 10 for target 0 / lun 2 on controller 1.

	  The normal answer therefore is to go with the default 8 and to use
	  a boot command line option for devices that need to use a different
	  command queue depth.

	  There is no safe option other than using good SCSI devices.

config SCSI_NCR53C8XX_MAX_TAGS
	int "maximum number of queued commands"
	depends on SCSI_ZALON || SCSI_NCR_Q720
	default "32"
	---help---
	  This option allows you to specify the maximum number of commands
	  that can be queued to any device, when tagged command queuing is
	  possible. The default value is 32. Minimum is 2, maximum is 64.
	  Modern hard disks are able to support 64 tags and even more, but
	  do not seem to be faster when more than 32 tags are being used.

	  So, the normal answer here is to go with the default value 32 unless
	  you are using very large hard disks with large cache (>= 1 MB) that
	  are able to take advantage of more than 32 tagged commands.

	  There is no safe option and the default answer is recommended.

config SCSI_NCR53C8XX_SYNC
	int "synchronous transfers frequency in MHz"
	depends on SCSI_ZALON || SCSI_NCR_Q720
	default "20"
	---help---
	  The SCSI Parallel Interface-2 Standard defines 5 classes of transfer
	  rates: FAST-5, FAST-10, FAST-20, FAST-40 and FAST-80.  The numbers
	  are respectively the maximum data transfer rates in mega-transfers
	  per second for each class.  For example, a FAST-20 Wide 16 device is
	  able to transfer data at 20 million 16 bit packets per second for a
	  total rate of 40 MB/s.

	  You may specify 0 if you want to only use asynchronous data
	  transfers. This is the safest and slowest option. Otherwise, specify
	  a value between 5 and 80, depending on the capability of your SCSI
	  controller.  The higher the number, the faster the data transfer.
	  Note that 80 should normally be ok since the driver decreases the
	  value automatically according to the controller's capabilities.

	  Your answer to this question is ignored for controllers with NVRAM,
	  since the driver will get this information from the user set-up.  It
	  also can be overridden using a boot setup option, as follows
	  (example): 'ncr53c8xx=sync:12' will allow the driver to negotiate
	  for FAST-20 synchronous data transfer (20 mega-transfers per
	  second).

	  The normal answer therefore is not to go with the default but to
	  select the maximum value 80 allowing the driver to use the maximum
	  value supported by each controller. If this causes problems with
	  your SCSI devices, you should come back and decrease the value.

	  There is no safe option other than using good cabling, right
	  terminations and SCSI conformant devices.

config SCSI_NCR53C8XX_NO_DISCONNECT
	bool "not allow targets to disconnect"
	depends on (SCSI_ZALON || SCSI_NCR_Q720) && SCSI_NCR53C8XX_DEFAULT_TAGS=0
	help
	  This option is only provided for safety if you suspect some SCSI
	  device of yours to not support properly the target-disconnect
	  feature. In that case, you would say Y here. In general however, to
	  not allow targets to disconnect is not reasonable if there is more
	  than 1 device on a SCSI bus. The normal answer therefore is N.

config SCSI_PAS16
	tristate "PAS16 SCSI support"
	depends on ISA && SCSI
	select SCSI_SPI_ATTRS
	---help---
	  This is support for a SCSI host adapter.  It is explained in section
	  3.10 of the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.  If it doesn't work out
	  of the box, you may have to change some settings in
	  <file:drivers/scsi/pas16.h>.

	  To compile this driver as a module, choose M here: the
	  module will be called pas16.

config SCSI_QLOGIC_FAS
	tristate "Qlogic FAS SCSI support"
	depends on ISA && SCSI
	---help---
	  This is a driver for the ISA, VLB, and PCMCIA versions of the Qlogic
	  FastSCSI! cards as well as any other card based on the FASXX chip
	  (including the Control Concepts SCSI/IDE/SIO/PIO/FDC cards).

	  This driver does NOT support the PCI versions of these cards. The
	  PCI versions are supported by the Qlogic ISP driver ("Qlogic ISP
	  SCSI support"), below.

	  Information about this driver is contained in
	  <file:Documentation/scsi/qlogicfas.txt>.  You should also read the
	  SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.

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

config SCSI_QLOGIC_FC_FIRMWARE
	bool "Include loadable firmware in driver"
	depends on SCSI_QLOGIC_FC
  	help
	  Say Y to include ISP2X00 Fabric Initiator/Target Firmware, with
	  expanded LUN addressing and FcTape (FCP-2) support, in the
	  qlogicfc driver. This is required on some platforms.

config SCSI_QLOGIC_1280
	tristate "Qlogic QLA 1240/1x80/1x160 SCSI support"
	depends on PCI && SCSI
	help
	  Say Y if you have a QLogic ISP1240/1x80/1x160 SCSI host adapter.

	  To compile this driver as a module, choose M here: the
	  module will be called qla1280.

config SCSI_QLOGICPTI
	tristate "PTI Qlogic, ISP Driver"
	depends on SBUS && SCSI
	help
	  This driver supports SBUS SCSI controllers from PTI or QLogic. These
	  controllers are known under Solaris as qpti and in the openprom as
	  PTI,ptisp or QLGC,isp. Note that PCI QLogic SCSI controllers are
	  driven by a different driver.

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

source "drivers/scsi/qla2xxx/Kconfig"
source "drivers/scsi/qla4xxx/Kconfig"

config SCSI_LPFC
	tristate "Emulex LightPulse Fibre Channel Support"
	depends on PCI && SCSI
	select SCSI_FC_ATTRS
	help
          This lpfc driver supports the Emulex LightPulse
          Family of Fibre Channel PCI host adapters.

config SCSI_SIM710
	tristate "Simple 53c710 SCSI support (Compaq, NCR machines)"
	depends on (EISA || MCA) && SCSI
	select SCSI_SPI_ATTRS
	---help---
	  This driver for NCR53c710 based SCSI host adapters.

	  It currently supports Compaq EISA cards and NCR MCA cards

config SCSI_SYM53C416
	tristate "Symbios 53c416 SCSI support"
	depends on ISA && SCSI
	---help---
	  This is support for the sym53c416 SCSI host adapter, the SCSI
	  adapter that comes with some HP scanners. This driver requires that
	  the sym53c416 is configured first using some sort of PnP
	  configuration program (e.g. isapnp) or by a PnP aware BIOS. If you
	  are using isapnp then you need to compile this driver as a module
	  and then load it using insmod after isapnp has run. The parameters
	  of the configured card(s) should be passed to the driver. The format
	  is:

	  insmod sym53c416 sym53c416=<base>,<irq> [sym53c416_1=<base>,<irq>]

	  To compile this driver as a module, choose M here: the
	  module will be called sym53c416.

config SCSI_DC395x
	tristate "Tekram DC395(U/UW/F) and DC315(U) SCSI support (EXPERIMENTAL)"
	depends on PCI && SCSI && EXPERIMENTAL
	---help---
	  This driver supports PCI SCSI host adapters based on the ASIC
	  TRM-S1040 chip, e.g Tekram DC395(U/UW/F) and DC315(U) variants.

	  This driver works, but is still in experimental status. So better
	  have a bootable disk and a backup in case of emergency.

	  Documentation can be found in <file:Documentation/scsi/dc395x.txt>.

	  To compile this driver as a module, choose M here: the
	  module will be called dc395x.

config SCSI_DC390T
	tristate "Tekram DC390(T) and Am53/79C974 SCSI support"
	depends on PCI && SCSI
	---help---
	  This driver supports PCI SCSI host adapters based on the Am53C974A
	  chip, e.g. Tekram DC390(T), DawiControl 2974 and some onboard
	  PCscsi/PCnet (Am53/79C974) solutions.

	  Documentation can be found in <file:Documentation/scsi/tmscsim.txt>.

	  Note that this driver does NOT support Tekram DC390W/U/F, which are
	  based on NCR/Symbios chips. Use "NCR53C8XX SCSI support" for those.

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

config SCSI_T128
	tristate "Trantor T128/T128F/T228 SCSI support"
	depends on ISA && SCSI
	select SCSI_SPI_ATTRS
	select CHECK_SIGNATURE
	---help---
	  This is support for a SCSI host adapter. It is explained in section
	  3.11 of the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.  If it doesn't work out
	  of the box, you may have to change some settings in
	  <file:drivers/scsi/t128.h>.  Note that Trantor was purchased by
	  Adaptec, and some former Trantor products are being sold under the
	  Adaptec name.

	  To compile this driver as a module, choose M here: the
	  module will be called t128.

config SCSI_U14_34F
	tristate "UltraStor 14F/34F support"
	depends on ISA && SCSI && ISA_DMA_API
	---help---
	  This is support for the UltraStor 14F and 34F SCSI-2 host adapters.
	  The source at <file:drivers/scsi/u14-34f.c> contains some
	  information about this hardware.  If the driver doesn't work out of
	  the box, you may have to change some settings in
	  <file: drivers/scsi/u14-34f.c>.  Read the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.  Note that there is also
	  another driver for the same hardware: "UltraStor SCSI support",
	  below.  You should say Y to both only if you want 24F support as
	  well.

	  To compile this driver as a module, choose M here: the
	  module will be called u14-34f.

config SCSI_U14_34F_TAGGED_QUEUE
	bool "enable tagged command queueing"
	depends on SCSI_U14_34F
	help
	  This is a feature of SCSI-2 which improves performance: the host
	  adapter can send several SCSI commands to a device's queue even if
	  previous commands haven't finished yet.
	  This is equivalent to the "u14-34f=tc:y" boot option.

config SCSI_U14_34F_LINKED_COMMANDS
	bool "enable elevator sorting"
	depends on SCSI_U14_34F
	help
	  This option enables elevator sorting for all probed SCSI disks and
	  CD-ROMs. It definitely reduces the average seek distance when doing
	  random seeks, but this does not necessarily result in a noticeable
	  performance improvement: your mileage may vary...
	  This is equivalent to the "u14-34f=lc:y" boot option.

config SCSI_U14_34F_MAX_TAGS
	int "maximum number of queued commands"
	depends on SCSI_U14_34F
	default "8"
	help
	  This specifies how many SCSI commands can be maximally queued for
	  each probed SCSI device. You should reduce the default value of 8
	  only if you have disks with buggy or limited tagged command support.
	  Minimum is 2 and maximum is 14. This value is also the window size
	  used by the elevator sorting option above. The effective value used
	  by the driver for each probed SCSI device is reported at boot time.
	  This is equivalent to the "u14-34f=mq:8" boot option.

config SCSI_ULTRASTOR
	tristate "UltraStor SCSI support"
	depends on X86 && ISA && SCSI
	---help---
	  This is support for the UltraStor 14F, 24F and 34F SCSI-2 host
	  adapter family.  This driver is explained in section 3.12 of the
	  SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.  If it doesn't work out
	  of the box, you may have to change some settings in
	  <file:drivers/scsi/ultrastor.h>.

	  Note that there is also another driver for the same hardware:
	  "UltraStor 14F/34F support", above.

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

config SCSI_NSP32
	tristate "Workbit NinjaSCSI-32Bi/UDE support"
	depends on PCI && SCSI && !64BIT
	help
	  This is support for the Workbit NinjaSCSI-32Bi/UDE PCI/Cardbus
	  SCSI host adapter. Please read the SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.

	  To compile this driver as a module, choose M here: the
	  module will be called nsp32.

config SCSI_DEBUG
	tristate "SCSI debugging host simulator"
	depends on SCSI
	help
	  This is a host adapter simulator that can simulate multiple hosts
	  each with multiple dummy SCSI devices (disks). It defaults to one
	  host adapter with one dummy SCSI disk. Each dummy disk uses kernel
	  RAM as storage (i.e. it is a ramdisk). To save space when multiple
	  dummy disks are simulated, they share the same kernel RAM for
	  their storage. See <http://www.torque.net/sg/sdebug.html> for more
	  information. This driver is primarily of use to those testing the
	  SCSI and block subsystems. If unsure, say N.

config SCSI_MESH
	tristate "MESH (Power Mac internal SCSI) support"
	depends on PPC32 && PPC_PMAC && SCSI
	help
	  Many Power Macintoshes and clones have a MESH (Macintosh Enhanced
	  SCSI Hardware) SCSI bus adaptor (the 7200 doesn't, but all of the
	  other Power Macintoshes do). Say Y to include support for this SCSI
	  adaptor.

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

config SCSI_MESH_SYNC_RATE
	int "maximum synchronous transfer rate (MB/s) (0 = async)"
	depends on SCSI_MESH
	default "5"
	help
	  On Power Macintoshes (and clones) where the MESH SCSI bus adaptor
	  drives a bus which is entirely internal to the machine (such as the
	  7500, 7600, 8500, etc.), the MESH is capable of synchronous
	  operation at up to 10 MB/s. On machines where the SCSI bus
	  controlled by the MESH can have external devices connected, it is
	  usually rated at 5 MB/s. 5 is a safe value here unless you know the
	  MESH SCSI bus is internal only; in that case you can say 10. Say 0
	  to disable synchronous operation.

config SCSI_MESH_RESET_DELAY_MS
	int "initial bus reset delay (ms) (0 = no reset)"
	depends on SCSI_MESH
	default "4000"

config SCSI_MAC53C94
	tristate "53C94 (Power Mac external SCSI) support"
	depends on PPC32 && PPC_PMAC && SCSI
	help
	  On Power Macintoshes (and clones) with two SCSI buses, the external
	  SCSI bus is usually controlled by a 53C94 SCSI bus adaptor. Older
	  machines which only have one SCSI bus, such as the 7200, also use
	  the 53C94. Say Y to include support for the 53C94.

	  To compile this driver as a module, choose M here: the
	  module will be called mac53c94.

source "drivers/scsi/arm/Kconfig"

config JAZZ_ESP
	bool "MIPS JAZZ FAS216 SCSI support"
	depends on MACH_JAZZ && SCSI
	select SCSI_SPI_ATTRS
	help
	  This is the driver for the onboard SCSI host adapter of MIPS Magnum
	  4000, Acer PICA, Olivetti M700-10 and a few other identical OEM
	  systems.

config A3000_SCSI
	tristate "A3000 WD33C93A support"
	depends on AMIGA && SCSI
	help
	  If you have an Amiga 3000 and have SCSI devices connected to the
	  built-in SCSI controller, say Y. Otherwise, say N.

	  To compile this driver as a module, choose M here: the
	  module will be called a3000.

config A2091_SCSI
	tristate "A2091/A590 WD33C93A support"
	depends on ZORRO && SCSI
	help
	  If you have a Commodore A2091 SCSI controller, say Y. Otherwise,
	  say N.

	  To compile this driver as a module, choose M here: the
	  module will be called a2091.

config GVP11_SCSI
	tristate "GVP Series II WD33C93A support"
	depends on ZORRO && SCSI
	---help---
	  If you have a Great Valley Products Series II SCSI controller,
	  answer Y. Also say Y if you have a later model of GVP SCSI
	  controller (such as the GVP A4008 or a Combo board). Otherwise,
	  answer N. This driver does NOT work for the T-Rex series of
	  accelerators from TekMagic and GVP-M.

	  To compile this driver as a module, choose M here: the
	  module will be called gvp11.

config SCSI_A4000T
	tristate "A4000T NCR53c710 SCSI support (EXPERIMENTAL)"
	depends on AMIGA && SCSI && EXPERIMENTAL
	select SCSI_SPI_ATTRS
	help
	  If you have an Amiga 4000T and have SCSI devices connected to the
	  built-in SCSI controller, say Y. Otherwise, say N.

	  To compile this driver as a module, choose M here: the
	  module will be called a4000t.

config SCSI_ZORRO7XX
	tristate "Zorro NCR53c710 SCSI support (EXPERIMENTAL)"
	depends on ZORRO && SCSI && EXPERIMENTAL
	select SCSI_SPI_ATTRS
	help
	  Support for various NCR53c710-based SCSI controllers on Zorro
	  expansion boards for the Amiga.
	  This includes:
	    - the Amiga 4091 Zorro III SCSI-2 controller,
	    - the MacroSystem Development's WarpEngine Amiga SCSI-2 controller
	      (info at
	      <http://www.lysator.liu.se/amiga/ar/guide/ar310.guide?FEATURE5>),
	    - the SCSI controller on the Phase5 Blizzard PowerUP 603e+
	      accelerator card for the Amiga 1200,
	    - the SCSI controller on the GVP Turbo 040/060 accelerator.

config ATARI_SCSI
	tristate "Atari native SCSI support"
	depends on ATARI && SCSI
	select SCSI_SPI_ATTRS
	---help---
	  If you have an Atari with built-in NCR5380 SCSI controller (TT,
	  Falcon, ...) say Y to get it supported. Of course also, if you have
	  a compatible SCSI controller (e.g. for Medusa).

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

	  This driver supports both styles of NCR integration into the
	  system: the TT style (separate DMA), and the Falcon style (via
	  ST-DMA, replacing ACSI).  It does NOT support other schemes, like
	  in the Hades (without DMA).

config ATARI_SCSI_TOSHIBA_DELAY
	bool "Long delays for Toshiba CD-ROMs"
	depends on ATARI_SCSI
	help
	  This option increases the delay after a SCSI arbitration to
	  accommodate some flaky Toshiba CD-ROM drives. Say Y if you intend to
	  use a Toshiba CD-ROM drive; otherwise, the option is not needed and
	  would impact performance a bit, so say N.

config ATARI_SCSI_RESET_BOOT
	bool "Reset SCSI-devices at boottime"
	depends on ATARI_SCSI
	help
	  Reset the devices on your Atari whenever it boots.  This makes the
	  boot process fractionally longer but may assist recovery from errors
	  that leave the devices with SCSI operations partway completed.

config TT_DMA_EMUL
	bool "Hades SCSI DMA emulator"
	depends on ATARI_SCSI && HADES
	help
	  This option enables code which emulates the TT SCSI DMA chip on the
	  Hades. This increases the SCSI transfer rates at least ten times
	  compared to PIO transfers.

config MAC_SCSI
	bool "Macintosh NCR5380 SCSI"
	depends on MAC && SCSI=y
	select SCSI_SPI_ATTRS
	help
	  This is the NCR 5380 SCSI controller included on most of the 68030
	  based Macintoshes.  If you have one of these say Y and read the
	  SCSI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.

config SCSI_MAC_ESP
	tristate "Macintosh NCR53c9[46] SCSI"
	depends on MAC && SCSI
	select SCSI_SPI_ATTRS
	help
	  This is the NCR 53c9x SCSI controller found on most of the 68040
	  based Macintoshes.

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

config MVME147_SCSI
	bool "WD33C93 SCSI driver for MVME147"
	depends on MVME147 && SCSI=y
	select SCSI_SPI_ATTRS
	help
	  Support for the on-board SCSI controller on the Motorola MVME147
	  single-board computer.

config MVME16x_SCSI
	tristate "NCR53C710 SCSI driver for MVME16x"
	depends on MVME16x && SCSI
	select SCSI_SPI_ATTRS
	help
	  The Motorola MVME162, 166, 167, 172 and 177 boards use the NCR53C710
	  SCSI controller chip.  Almost everyone using one of these boards
	  will want to say Y to this question.

config BVME6000_SCSI
	tristate "NCR53C710 SCSI driver for BVME6000"
	depends on BVME6000 && SCSI
	select SCSI_SPI_ATTRS
	help
	  The BVME4000 and BVME6000 boards from BVM Ltd use the NCR53C710
	  SCSI controller chip.  Almost everyone using one of these boards
	  will want to say Y to this question.

config SUN3_SCSI
	tristate "Sun3 NCR5380 SCSI"
	depends on SUN3 && SCSI
	select SCSI_SPI_ATTRS
	help
	  This option will enable support for the OBIO (onboard io) NCR5380
	  SCSI controller found in the Sun 3/50 and 3/60, as well as for
	  "Sun3" type VME scsi controllers also based on the NCR5380.
	  General Linux information on the Sun 3 series (now discontinued)
	  is at <http://www.angelfire.com/ca2/tech68k/sun3.html>.

config SUN3X_ESP
	bool "Sun3x ESP SCSI"
	depends on SUN3X && SCSI=y
	select SCSI_SPI_ATTRS
	help
	  The ESP was an on-board SCSI controller used on Sun 3/80
	  machines.  Say Y here to compile in support for it.

config SCSI_SUNESP
	tristate "Sparc ESP Scsi Driver"
	depends on SBUS && SCSI
	select SCSI_SPI_ATTRS
	help
	  This is the driver for the Sun ESP SCSI host adapter. The ESP
	  chipset is present in most SPARC SBUS-based computers and
	  supports the Emulex family of ESP SCSI chips (esp100, esp100A,
	  esp236, fas101, fas236) as well as the Qlogic fas366 SCSI chip.

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

config ZFCP
	tristate "FCP host bus adapter driver for IBM eServer zSeries"
	depends on S390 && QDIO && SCSI
	select SCSI_FC_ATTRS
	help
          If you want to access SCSI devices attached to your IBM eServer
          zSeries by means of Fibre Channel interfaces say Y.
          For details please refer to the documentation provided by IBM at
          <http://oss.software.ibm.com/developerworks/opensource/linux390>

          This driver is also available as a module. This module will be
          called zfcp. If you want to compile it as a module, say M here
          and read <file:Documentation/kbuild/modules.txt>.

config SCSI_SRP
	tristate "SCSI RDMA Protocol helper library"
	depends on SCSI && PCI
	select SCSI_TGT
	help
	  If you wish to use SRP target drivers, say Y.

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

endif # SCSI_LOWLEVEL

source "drivers/scsi/pcmcia/Kconfig"

source "drivers/scsi/device_handler/Kconfig"

endmenu