1# 2# AIC79XX 2.5.X Kernel configuration File. 3# $Id: //depot/linux-aic79xx-2.5.0/drivers/scsi/aic7xxx/Kconfig.aic79xx#4 $ 4# 5config SCSI_AIC79XX 6 tristate "Adaptec AIC79xx U320 support" 7 depends on PCI && SCSI 8 help 9 This driver supports all of Adaptec's Ultra 320 PCI-X 10 based SCSI controllers. 11 12config AIC79XX_CMDS_PER_DEVICE 13 int "Maximum number of TCQ commands per device" 14 depends on SCSI_AIC79XX 15 default "32" 16 ---help--- 17 Specify the number of commands you would like to allocate per SCSI 18 device when Tagged Command Queueing (TCQ) is enabled on that device. 19 20 This is an upper bound value for the number of tagged transactions 21 to be used for any device. The aic7xxx driver will automatically 22 vary this number based on device behavior. For devices with a 23 fixed maximum, the driver will eventually lock to this maximum 24 and display a console message inidicating this value. 25 26 Due to resource allocation issues in the Linux SCSI mid-layer, using 27 a high number of commands per device may result in memory allocation 28 failures when many devices are attached to the system. For this reason, 29 the default is set to 32. Higher values may result in higer performance 30 on some devices. The upper bound is 253. 0 disables tagged queueing. 31 32 Per device tag depth can be controlled via the kernel command line 33 "tag_info" option. See drivers/scsi/aic7xxx/README.aic79xx 34 for details. 35 36config AIC79XX_RESET_DELAY_MS 37 int "Initial bus reset delay in milli-seconds" 38 depends on SCSI_AIC79XX 39 default "15000" 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: 15000 (15 seconds) 46 47config 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 59config AIC79XX_ENABLE_RD_STRM 60 bool "Enable Read Streaming for All Targets" 61 depends on SCSI_AIC79XX 62 default n 63 help 64 Read Streaming is a U320 protocol option that should enhance 65 performance. Early U320 drive firmware actually performs slower 66 with read streaming enabled so it is disabled by default. Read 67 Streaming can be configured in much the same way as tagged queueing 68 using the "rd_strm" command line option. See 69 drivers/scsi/aic7xxx/README.aic79xx for details. 70 71config AIC79XX_DEBUG_ENABLE 72 bool "Compile in Debugging Code" 73 depends on SCSI_AIC79XX 74 default y 75 help 76 Compile in aic79xx debugging code that can be useful in diagnosing 77 driver errors. 78 79config AIC79XX_DEBUG_MASK 80 int "Debug code enable mask (16383 for all debugging)" 81 depends on SCSI_AIC79XX 82 default "0" 83 help 84 Bit mask of debug options that is only valid if the 85 CONFIG_AIC79XX_DEBUG_ENBLE option is enabled. The bits in this mask 86 are defined in the drivers/scsi/aic7xxx/aic79xx.h - search for the 87 variable ahd_debug in that file to find them. 88 89config AIC79XX_REG_PRETTY_PRINT 90 bool "Decode registers during diagnostics" 91 depends on SCSI_AIC79XX 92 default y 93 help 94 Compile in register value tables for the output of expanded register 95 contents in diagnostics. This make it much easier to understand debug 96 output without having to refer to a data book and/or the aic7xxx.reg 97 file. 98