Kconfig
资源名称:block.rar [点击查看]
上传用户:ajay2009
上传日期:2009-05-22
资源大小:495k
文件大小:17k
源码类别:
驱动编程
开发平台:
Unix_Linux
- #
- # Block device driver configuration
- #
- menu "Block devices"
- config BLK_DEV_FD
- tristate "Normal floppy disk support"
- depends on ARCH_MAY_HAVE_PC_FDC
- ---help---
- If you want to use the floppy disk drive(s) of your PC under Linux,
- say Y. Information about this driver, especially important for IBM
- Thinkpad users, is contained in <file:Documentation/floppy.txt>.
- That file also contains the location of the Floppy driver FAQ as
- well as location of the fdutils package used to configure additional
- parameters of the driver at run time.
- To compile this driver as a module, choose M here: the
- module will be called floppy.
- config AMIGA_FLOPPY
- tristate "Amiga floppy support"
- depends on AMIGA
- config ATARI_FLOPPY
- tristate "Atari floppy support"
- depends on ATARI
- config BLK_DEV_SWIM_IOP
- bool "Macintosh IIfx/Quadra 900/Quadra 950 floppy support (EXPERIMENTAL)"
- depends on MAC && EXPERIMENTAL && BROKEN
- help
- Say Y here to support the SWIM (Super Woz Integrated Machine) IOP
- floppy controller on the Macintosh IIfx and Quadra 900/950.
- config MAC_FLOPPY
- tristate "Support for PowerMac floppy"
- depends on PPC_PMAC && !PPC_PMAC64
- help
- If you have a SWIM-3 (Super Woz Integrated Machine 3; from Apple)
- floppy controller, say Y here. Most commonly found in PowerMacs.
- config BLK_DEV_PS2
- tristate "PS/2 ESDI hard disk support"
- depends on MCA && MCA_LEGACY && BROKEN
- help
- Say Y here if you have a PS/2 machine with a MCA bus and an ESDI
- hard disk.
- To compile this driver as a module, choose M here: the
- module will be called ps2esdi.
- config AMIGA_Z2RAM
- tristate "Amiga Zorro II ramdisk support"
- depends on ZORRO
- help
- This enables support for using Chip RAM and Zorro II RAM as a
- ramdisk or as a swap partition. Say Y if you want to include this
- driver in the kernel.
- To compile this driver as a module, choose M here: the
- module will be called z2ram.
- config ATARI_ACSI
- tristate "Atari ACSI support"
- depends on ATARI && BROKEN
- ---help---
- This enables support for the Atari ACSI interface. The driver
- supports hard disks and CD-ROMs, which have 512-byte sectors, or can
- be switched to that mode. Due to the ACSI command format, only disks
- up to 1 GB are supported. Special support for certain ACSI to SCSI
- adapters, which could relax that, isn't included yet. The ACSI
- driver is also the basis for certain other drivers for devices
- attached to the ACSI bus: Atari SLM laser printer, BioNet-100
- Ethernet, and PAMsNet Ethernet. If you want to use one of these
- devices, you need ACSI support, too.
- To compile this driver as a module, choose M here: the
- module will be called acsi.
- comment "Some devices (e.g. CD jukebox) support multiple LUNs"
- depends on ATARI && ATARI_ACSI
- config ACSI_MULTI_LUN
- bool "Probe all LUNs on each ACSI device"
- depends on ATARI_ACSI
- help
- If you have a ACSI device that supports more than one LUN (Logical
- Unit Number), e.g. a CD jukebox, you should say Y here so that all
- will be found by the ACSI driver. An ACSI device with multiple LUNs
- acts logically like multiple ACSI devices. The vast majority of ACSI
- devices have only one LUN, and so most people can say N here and
- should in fact do so, because it is safer.
- config ATARI_SLM
- tristate "Atari SLM laser printer support"
- depends on ATARI && ATARI_ACSI!=n
- help
- If you have an Atari SLM laser printer, say Y to include support for
- it in the kernel. Otherwise, say N. This driver is also available as
- a module ( = code which can be inserted in and removed from the
- running kernel whenever you want). The module will be called
- acsi_slm. Be warned: the driver needs much ST-RAM and can cause
- problems due to that fact!
- config BLK_DEV_XD
- tristate "XT hard disk support"
- depends on ISA && ISA_DMA_API
- help
- Very old 8 bit hard disk controllers used in the IBM XT computer
- will be supported if you say Y here.
- To compile this driver as a module, choose M here: the
- module will be called xd.
- It's pretty unlikely that you have one of these: say N.
- config PARIDE
- tristate "Parallel port IDE device support"
- depends on PARPORT
- ---help---
- There are many external CD-ROM and disk devices that connect through
- your computer's parallel port. Most of them are actually IDE devices
- using a parallel port IDE adapter. This option enables the PARIDE
- subsystem which contains drivers for many of these external drives.
- Read <file:Documentation/paride.txt> for more information.
- If you have said Y to the "Parallel-port support" configuration
- option, you may share a single port between your printer and other
- parallel port devices. Answer Y to build PARIDE support into your
- kernel, or M if you would like to build it as a loadable module. If
- your parallel port support is in a loadable module, you must build
- PARIDE as a module. If you built PARIDE support into your kernel,
- you may still build the individual protocol modules and high-level
- drivers as loadable modules. If you build this support as a module,
- it will be called paride.
- To use the PARIDE support, you must say Y or M here and also to at
- least one high-level driver (e.g. "Parallel port IDE disks",
- "Parallel port ATAPI CD-ROMs", "Parallel port ATAPI disks" etc.) and
- to at least one protocol driver (e.g. "ATEN EH-100 protocol",
- "MicroSolutions backpack protocol", "DataStor Commuter protocol"
- etc.).
- source "drivers/block/paride/Kconfig"
- config BLK_CPQ_DA
- tristate "Compaq SMART2 support"
- depends on PCI
- help
- This is the driver for Compaq Smart Array controllers. Everyone
- using these boards should say Y here. See the file
- <file:Documentation/cpqarray.txt> for the current list of boards
- supported by this driver, and for further information on the use of
- this driver.
- config BLK_CPQ_CISS_DA
- tristate "Compaq Smart Array 5xxx support"
- depends on PCI
- help
- This is the driver for Compaq Smart Array 5xxx controllers.
- Everyone using these boards should say Y here.
- See <file:Documentation/cciss.txt> for the current list of
- boards supported by this driver, and for further information
- on the use of this driver.
- config CISS_SCSI_TAPE
- bool "SCSI tape drive support for Smart Array 5xxx"
- depends on BLK_CPQ_CISS_DA && SCSI && PROC_FS
- help
- When enabled (Y), this option allows SCSI tape drives and SCSI medium
- changers (tape robots) to be accessed via a Compaq 5xxx array
- controller. (See <file:Documentation/cciss.txt> for more details.)
- "SCSI support" and "SCSI tape support" must also be enabled for this
- option to work.
- When this option is disabled (N), the SCSI portion of the driver
- is not compiled.
- config BLK_DEV_DAC960
- tristate "Mylex DAC960/DAC1100 PCI RAID Controller support"
- depends on PCI
- help
- This driver adds support for the Mylex DAC960, AcceleRAID, and
- eXtremeRAID PCI RAID controllers. See the file
- <file:Documentation/README.DAC960> for further information about
- this driver.
- To compile this driver as a module, choose M here: the
- module will be called DAC960.
- config BLK_DEV_UMEM
- tristate "Micro Memory MM5415 Battery Backed RAM support (EXPERIMENTAL)"
- depends on PCI && EXPERIMENTAL
- ---help---
- Saying Y here will include support for the MM5415 family of
- battery backed (Non-volatile) RAM cards.
- <http://www.umem.com/>
- The cards appear as block devices that can be partitioned into
- as many as 15 partitions.
- To compile this driver as a module, choose M here: the
- module will be called umem.
- The umem driver has not yet been allocated a MAJOR number, so
- one is chosen dynamically. Use "devfs" or look in /proc/devices
- for the device number
- config BLK_DEV_UBD
- bool "Virtual block device"
- depends on UML
- ---help---
- The User-Mode Linux port includes a driver called UBD which will let
- you access arbitrary files on the host computer as block devices.
- Unless you know that you do not need such virtual block devices say
- Y here.
- config BLK_DEV_UBD_SYNC
- bool "Always do synchronous disk IO for UBD"
- depends on BLK_DEV_UBD
- ---help---
- Writes to the virtual block device are not immediately written to the
- host's disk; this may cause problems if, for example, the User-Mode
- Linux 'Virtual Machine' uses a journalling filesystem and the host
- computer crashes.
- Synchronous operation (i.e. always writing data to the host's disk
- immediately) is configurable on a per-UBD basis by using a special
- kernel command line option. Alternatively, you can say Y here to
- turn on synchronous operation by default for all block devices.
- If you're running a journalling file system (like reiserfs, for
- example) in your virtual machine, you will want to say Y here. If
- you care for the safety of the data in your virtual machine, Y is a
- wise choice too. In all other cases (for example, if you're just
- playing around with User-Mode Linux) you can choose N.
- config BLK_DEV_COW_COMMON
- bool
- default BLK_DEV_UBD
- config MMAPPER
- tristate "Example IO memory driver (BROKEN)"
- depends on UML && BROKEN
- ---help---
- The User-Mode Linux port can provide support for IO Memory
- emulation with this option. This allows a host file to be
- specified as an I/O region on the kernel command line. That file
- will be mapped into UML's kernel address space where a driver can
- locate it and do whatever it wants with the memory, including
- providing an interface to it for UML processes to use.
- For more information, see
- <http://user-mode-linux.sourceforge.net/iomem.html>.
- If you'd like to be able to provide a simulated IO port space for
- User-Mode Linux processes, say Y. If unsure, say N.
- config BLK_DEV_LOOP
- tristate "Loopback device support"
- ---help---
- Saying Y here will allow you to use a regular file as a block
- device; you can then create a file system on that block device and
- mount it just as you would mount other block devices such as hard
- drive partitions, CD-ROM drives or floppy drives. The loop devices
- are block special device files with major number 7 and typically
- called /dev/loop0, /dev/loop1 etc.
- This is useful if you want to check an ISO 9660 file system before
- burning the CD, or if you want to use floppy images without first
- writing them to floppy. Furthermore, some Linux distributions avoid
- the need for a dedicated Linux partition by keeping their complete
- root file system inside a DOS FAT file using this loop device
- driver.
- To use the loop device, you need the losetup utility, found in the
- util-linux package, see
- <ftp://ftp.kernel.org/pub/linux/utils/util-linux/>.
- The loop device driver can also be used to "hide" a file system in
- a disk partition, floppy, or regular file, either using encryption
- (scrambling the data) or steganography (hiding the data in the low
- bits of, say, a sound file). This is also safe if the file resides
- on a remote file server.
- There are several ways of encrypting disks. Some of these require
- kernel patches. The vanilla kernel offers the cryptoloop option
- and a Device Mapper target (which is superior, as it supports all
- file systems). If you want to use the cryptoloop, say Y to both
- LOOP and CRYPTOLOOP, and make sure you have a recent (version 2.12
- or later) version of util-linux. Additionally, be aware that
- the cryptoloop is not safe for storing journaled filesystems.
- Note that this loop device has nothing to do with the loopback
- device used for network connections from the machine to itself.
- To compile this driver as a module, choose M here: the
- module will be called loop.
- Most users will answer N here.
- config BLK_DEV_CRYPTOLOOP
- tristate "Cryptoloop Support"
- select CRYPTO
- depends on BLK_DEV_LOOP
- ---help---
- Say Y here if you want to be able to use the ciphers that are
- provided by the CryptoAPI as loop transformation. This might be
- used as hard disk encryption.
- WARNING: This device is not safe for journaled file systems like
- ext3 or Reiserfs. Please use the Device Mapper crypto module
- instead, which can be configured to be on-disk compatible with the
- cryptoloop device.
- config BLK_DEV_NBD
- tristate "Network block device support"
- depends on NET
- ---help---
- Saying Y here will allow your computer to be a client for network
- block devices, i.e. it will be able to use block devices exported by
- servers (mount file systems on them etc.). Communication between
- client and server works over TCP/IP networking, but to the client
- program this is hidden: it looks like a regular local file access to
- a block device special file such as /dev/nd0.
- Network block devices also allows you to run a block-device in
- userland (making server and client physically the same computer,
- communicating using the loopback network device).
- Read <file:Documentation/nbd.txt> for more information, especially
- about where to find the server code, which runs in user space and
- does not need special kernel support.
- Note that this has nothing to do with the network file systems NFS
- or Coda; you can say N here even if you intend to use NFS or Coda.
- To compile this driver as a module, choose M here: the
- module will be called nbd.
- If unsure, say N.
- config BLK_DEV_SX8
- tristate "Promise SATA SX8 support"
- depends on PCI
- ---help---
- Saying Y or M here will enable support for the
- Promise SATA SX8 controllers.
- Use devices /dev/sx8/$N and /dev/sx8/$Np$M.
- config BLK_DEV_UB
- tristate "Low Performance USB Block driver"
- depends on USB
- help
- This driver supports certain USB attached storage devices
- such as flash keys.
- Warning: Enabling this cripples the usb-storage driver.
- If unsure, say N.
- config BLK_DEV_RAM
- tristate "RAM disk support"
- ---help---
- Saying Y here will allow you to use a portion of your RAM memory as
- a block device, so that you can make file systems on it, read and
- write to it and do all the other things that you can do with normal
- block devices (such as hard drives). It is usually used to load and
- store a copy of a minimal root file system off of a floppy into RAM
- during the initial install of Linux.
- Note that the kernel command line option "ramdisk=XX" is now
- obsolete. For details, read <file:Documentation/ramdisk.txt>.
- To compile this driver as a module, choose M here: the
- module will be called rd.
- Most normal users won't need the RAM disk functionality, and can
- thus say N here.
- config BLK_DEV_RAM_COUNT
- int "Default number of RAM disks" if BLK_DEV_RAM
- default "16"
- help
- The default value is 16 RAM disks. Change this if you know what
- are doing. If you boot from a filesystem that needs to be extracted
- in memory, you will need at least one RAM disk (e.g. root on cramfs).
- config BLK_DEV_RAM_SIZE
- int "Default RAM disk size (kbytes)"
- depends on BLK_DEV_RAM
- default "4096"
- help
- The default value is 4096 kilobytes. Only change this if you know
- what are you doing. If you are using IBM S/390, then set this to
- 8192.
- config BLK_DEV_INITRD
- bool "Initial RAM disk (initrd) support"
- depends on BLK_DEV_RAM=y
- help
- The initial RAM disk is a RAM disk that is loaded by the boot loader
- (loadlin or lilo) and that is mounted as root before the normal boot
- procedure. It is typically used to load modules needed to mount the
- "real" root file system, etc. See <file:Documentation/initrd.txt>
- for details.
- #XXX - it makes sense to enable this only for 32-bit subarch's, not for x86_64
- #for instance.
- config LBD
- bool "Support for Large Block Devices"
- depends on X86 || (MIPS && 32BIT) || PPC32 || ARCH_S390_31 || SUPERH || UML
- help
- Say Y here if you want to attach large (bigger than 2TB) discs to
- your machine, or if you want to have a raid or loopback device
- bigger than 2TB. Otherwise say N.
- config CDROM_PKTCDVD
- tristate "Packet writing on CD/DVD media"
- depends on !UML
- help
- If you have a CDROM drive that supports packet writing, say Y to
- include preliminary support. It should work with any MMC/Mt Fuji
- compliant ATAPI or SCSI drive, which is just about any newer CD
- writer.
- Currently only writing to CD-RW, DVD-RW and DVD+RW discs is possible.
- DVD-RW disks must be in restricted overwrite mode.
- To compile this driver as a module, choose M here: the
- module will be called pktcdvd.
- config CDROM_PKTCDVD_BUFFERS
- int "Free buffers for data gathering"
- depends on CDROM_PKTCDVD
- default "8"
- help
- This controls the maximum number of active concurrent packets. More
- concurrent packets can increase write performance, but also require
- more memory. Each concurrent packet will require approximately 64Kb
- of non-swappable kernel memory, memory which will be allocated at
- pktsetup time.
- config CDROM_PKTCDVD_WCACHE
- bool "Enable write caching"
- depends on CDROM_PKTCDVD
- help
- If enabled, write caching will be set for the CD-R/W device. For now
- this option is dangerous unless the CD-RW media is known good, as we
- don't do deferred write error handling yet.
- source "drivers/s390/block/Kconfig"
- source "drivers/block/Kconfig.iosched"
- config ATA_OVER_ETH
- tristate "ATA over Ethernet support"
- depends on NET
- help
- This driver provides Support for ATA over Ethernet block
- devices like the Coraid EtherDrive (R) Storage Blade.
- endmenu