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Linux/drivers/scsi/aic7xxx/Kconfig.aic79xx

  1 #
  2 # AIC79XX 2.5.X Kernel configuration File.
  3 # $Id: //depot/linux-aic79xx-2.5.0/drivers/scsi/aic7xxx/Kconfig.aic79xx#4 $
  4 #
  5 config SCSI_AIC79XX
  6         tristate "Adaptec AIC79xx U320 support"
  7         depends on PCI && SCSI
  8         select SCSI_SPI_ATTRS
  9         help
 10         This driver supports all of Adaptec's Ultra 320 PCI-X
 11         based SCSI controllers.
 12 
 13 config AIC79XX_CMDS_PER_DEVICE
 14         int "Maximum number of TCQ commands per device"
 15         depends on SCSI_AIC79XX
 16         default "32"
 17         ---help---
 18         Specify the number of commands you would like to allocate per SCSI
 19         device when Tagged Command Queueing (TCQ) is enabled on that device.
 20 
 21         This is an upper bound value for the number of tagged transactions
 22         to be used for any device.  The aic7xxx driver will automatically
 23         vary this number based on device behavior.  For devices with a
 24         fixed maximum, the driver will eventually lock to this maximum
 25         and display a console message indicating this value.
 26 
 27         Due to resource allocation issues in the Linux SCSI mid-layer, using
 28         a high number of commands per device may result in memory allocation
 29         failures when many devices are attached to the system.  For this reason,
 30         the default is set to 32.  Higher values may result in higher performance
 31         on some devices.  The upper bound is 253.  0 disables tagged queueing.
 32 
 33         Per device tag depth can be controlled via the kernel command line
 34         "tag_info" option.  See Documentation/scsi/aic79xx.txt for details.
 35 
 36 config AIC79XX_RESET_DELAY_MS
 37         int "Initial bus reset delay in milli-seconds"
 38         depends on SCSI_AIC79XX
 39         default "5000"
 40         ---help---
 41         The number of milliseconds to delay after an initial bus reset.
 42         The bus settle delay following all error recovery actions is
 43         dictated by the SCSI layer and is not affected by this value.
 44 
 45         Default: 5000 (5 seconds)
 46 
 47 config AIC79XX_BUILD_FIRMWARE
 48         bool "Build Adapter Firmware with Kernel Build"
 49         depends on SCSI_AIC79XX && !PREVENT_FIRMWARE_BUILD
 50         help
 51         This option should only be enabled if you are modifying the firmware
 52         source to the aic79xx driver and wish to have the generated firmware
 53         include files updated during a normal kernel build.  The assembler
 54         for the firmware requires lex and yacc or their equivalents, as well
 55         as the db v1 library.  You may have to install additional packages
 56         or modify the assembler Makefile or the files it includes if your
 57         build environment is different than that of the author.
 58 
 59 config AIC79XX_DEBUG_ENABLE
 60         bool "Compile in Debugging Code"
 61         depends on SCSI_AIC79XX
 62         default y
 63         help
 64         Compile in aic79xx debugging code that can be useful in diagnosing
 65         driver errors.
 66 
 67 config AIC79XX_DEBUG_MASK
 68         int "Debug code enable mask (16383 for all debugging)"
 69         depends on SCSI_AIC79XX
 70         default "0"
 71         help
 72         Bit mask of debug options that is only valid if the
 73         CONFIG_AIC79XX_DEBUG_ENABLE option is enabled.  The bits in this mask
 74         are defined in the drivers/scsi/aic7xxx/aic79xx.h - search for the
 75         variable ahd_debug in that file to find them.
 76 
 77 config AIC79XX_REG_PRETTY_PRINT
 78         bool "Decode registers during diagnostics"
 79         depends on SCSI_AIC79XX
 80         default y
 81         help
 82         Compile in register value tables for the output of expanded register
 83         contents in diagnostics.  This make it much easier to understand debug
 84         output without having to refer to a data book and/or the aic7xxx.reg
 85         file.

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