1.. SPDX-License-Identifier: GPL-2.0 2 3====================== 4SCSI Kernel Parameters 5====================== 6 7See Documentation/admin-guide/kernel-parameters.rst for general information on 8specifying module parameters. 9 10This document may not be entirely up to date and comprehensive. The command 11``modinfo -p ${modulename}`` shows a current list of all parameters of a loadable 12module. Loadable modules, after being loaded into the running kernel, also 13reveal their parameters in /sys/module/${modulename}/parameters/. Some of these 14parameters may be changed at runtime by the command 15``echo -n ${value} > /sys/module/${modulename}/parameters/${parm}``. 16 17:: 18 19 advansys= [HW,SCSI] 20 See header of drivers/scsi/advansys.c. 21 22 aha152x= [HW,SCSI] 23 See Documentation/scsi/aha152x.rst. 24 25 aha1542= [HW,SCSI] 26 Format: <portbase>[,<buson>,<busoff>[,<dmaspeed>]] 27 28 aic7xxx= [HW,SCSI] 29 See Documentation/scsi/aic7xxx.rst. 30 31 aic79xx= [HW,SCSI] 32 See Documentation/scsi/aic79xx.rst. 33 34 atascsi= [HW,SCSI] 35 See drivers/scsi/atari_scsi.c. 36 37 BusLogic= [HW,SCSI] 38 See drivers/scsi/BusLogic.c, comment before function 39 BusLogic_ParseDriverOptions(). 40 41 gdth= [HW,SCSI] 42 See header of drivers/scsi/gdth.c. 43 44 gvp11= [HW,SCSI] 45 46 ips= [HW,SCSI] Adaptec / IBM ServeRAID controller 47 See header of drivers/scsi/ips.c. 48 49 mac5380= [HW,SCSI] 50 See drivers/scsi/mac_scsi.c. 51 52 scsi_mod.max_luns= 53 [SCSI] Maximum number of LUNs to probe. 54 Should be between 1 and 2^32-1. 55 56 scsi_mod.max_report_luns= 57 [SCSI] Maximum number of LUNs received. 58 Should be between 1 and 16384. 59 60 NCR_D700= [HW,SCSI] 61 See header of drivers/scsi/NCR_D700.c. 62 63 ncr5380= [HW,SCSI] 64 See Documentation/scsi/g_NCR5380.rst. 65 66 ncr53c400= [HW,SCSI] 67 See Documentation/scsi/g_NCR5380.rst. 68 69 ncr53c400a= [HW,SCSI] 70 See Documentation/scsi/g_NCR5380.rst. 71 72 ncr53c8xx= [HW,SCSI] 73 74 osst= [HW,SCSI] SCSI Tape Driver 75 Format: <buffer_size>,<write_threshold> 76 See also Documentation/scsi/st.rst. 77 78 scsi_debug_*= [SCSI] 79 See drivers/scsi/scsi_debug.c. 80 81 scsi_mod.default_dev_flags= 82 [SCSI] SCSI default device flags 83 Format: <integer> 84 85 scsi_mod.dev_flags= 86 [SCSI] Black/white list entry for vendor and model 87 Format: <vendor>:<model>:<flags> 88 (flags are integer value) 89 90 scsi_mod.scsi_logging_level= 91 [SCSI] a bit mask of logging levels 92 See drivers/scsi/scsi_logging.h for bits. Also 93 settable via sysctl at dev.scsi.logging_level 94 (/proc/sys/dev/scsi/logging_level). 95 There is also a nice 'scsi_logging_level' script in the 96 S390-tools package, available for download at 97 https://github.com/ibm-s390-tools/s390-tools/blob/master/scripts/scsi_logging_level 98 99 scsi_mod.scan= [SCSI] sync (default) scans SCSI busses as they are 100 discovered. async scans them in kernel threads, 101 allowing boot to proceed. none ignores them, expecting 102 user space to do the scan. 103 104 sim710= [SCSI,HW] 105 See header of drivers/scsi/sim710.c. 106 107 st= [HW,SCSI] SCSI tape parameters (buffers, etc.) 108 See Documentation/scsi/st.rst. 109 110 wd33c93= [HW,SCSI] 111 See header of drivers/scsi/wd33c93.c. 112