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 gvp11= [HW,SCSI] 42 43 ips= [HW,SCSI] Adaptec / IBM ServeRAID controller 44 See header of drivers/scsi/ips.c. 45 46 mac5380= [HW,SCSI] 47 See drivers/scsi/mac_scsi.c. 48 49 scsi_mod.max_luns= 50 [SCSI] Maximum number of LUNs to probe. 51 Should be between 1 and 2^32-1. 52 53 scsi_mod.max_report_luns= 54 [SCSI] Maximum number of LUNs received. 55 Should be between 1 and 16384. 56 57 NCR_D700= [HW,SCSI] 58 See header of drivers/scsi/NCR_D700.c. 59 60 ncr5380= [HW,SCSI] 61 See Documentation/scsi/g_NCR5380.rst. 62 63 ncr53c400= [HW,SCSI] 64 See Documentation/scsi/g_NCR5380.rst. 65 66 ncr53c400a= [HW,SCSI] 67 See Documentation/scsi/g_NCR5380.rst. 68 69 ncr53c8xx= [HW,SCSI] 70 71 osst= [HW,SCSI] SCSI Tape Driver 72 Format: <buffer_size>,<write_threshold> 73 See also Documentation/scsi/st.rst. 74 75 scsi_debug_*= [SCSI] 76 See drivers/scsi/scsi_debug.c. 77 78 scsi_mod.default_dev_flags= 79 [SCSI] SCSI default device flags 80 Format: <integer> 81 82 scsi_mod.dev_flags= 83 [SCSI] Black/white list entry for vendor and model 84 Format: <vendor>:<model>:<flags> 85 (flags are integer value) 86 87 scsi_mod.scsi_logging_level= 88 [SCSI] a bit mask of logging levels 89 See drivers/scsi/scsi_logging.h for bits. Also 90 settable via sysctl at dev.scsi.logging_level 91 (/proc/sys/dev/scsi/logging_level). 92 There is also a nice 'scsi_logging_level' script in the 93 S390-tools package, available for download at 94 https://github.com/ibm-s390-linux/s390-tools/blob/master/scripts/scsi_logging_level 95 96 scsi_mod.scan= [SCSI] sync (default) scans SCSI busses as they are 97 discovered. async scans them in kernel threads, 98 allowing boot to proceed. none ignores them, expecting 99 user space to do the scan. 100 101 sim710= [SCSI,HW] 102 See header of drivers/scsi/sim710.c. 103 104 st= [HW,SCSI] SCSI tape parameters (buffers, etc.) 105 See Documentation/scsi/st.rst. 106 107 wd33c93= [HW,SCSI] 108 See header of drivers/scsi/wd33c93.c. 109