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review.shift-gmbh.com / SHIFTPHONES / kernel / common / 7d34ca3854845398cb36866d14bbdc43dcec1ad0 / . / Documentation / scsi / scsi-parameters.rst
blob: 9aba897c97ac9f1248449d4909dc8dfe092a7842 [file] [log] [blame]
Mauro Carvalho Chehaba0b16432020-03-02 09:16:05 +0100[diff] [blame]1.. SPDX-License-Identifier: GPL-2.0
2
3======================
4SCSI Kernel Parameters
5======================
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]6
Mauro Carvalho Chehab8c27ceff32016-10-18 10:12:27 -0200[diff] [blame]7See Documentation/admin-guide/kernel-parameters.rst for general information on
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]8specifying module parameters.
9
10This document may not be entirely up to date and comprehensive. The command
Mauro Carvalho Chehaba0b16432020-03-02 09:16:05 +0100[diff] [blame]11``modinfo -p ${modulename}`` shows a current list of all parameters of a loadable
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]12module. Loadable modules, after being loaded into the running kernel, also
13reveal their parameters in /sys/module/${modulename}/parameters/. Some of these
14parameters may be changed at runtime by the command
Mauro Carvalho Chehaba0b16432020-03-02 09:16:05 +0100[diff] [blame]15``echo -n ${value} > /sys/module/${modulename}/parameters/${parm}``.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]16
Mauro Carvalho Chehaba0b16432020-03-02 09:16:05 +0100[diff] [blame]17::
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]18
19 advansys= [HW,SCSI]
20 See header of drivers/scsi/advansys.c.
21
22 aha152x= [HW,SCSI]
Mauro Carvalho Chehab94b55302020-03-02 09:15:39 +0100[diff] [blame]23 See Documentation/scsi/aha152x.rst.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]24
25 aha1542= [HW,SCSI]
26 Format: <portbase>[,<buson>,<busoff>[,<dmaspeed>]]
27
28 aic7xxx= [HW,SCSI]
Mauro Carvalho Chehabcff7c4a2020-03-02 09:15:41 +0100[diff] [blame]29 See Documentation/scsi/aic7xxx.rst.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]30
31 aic79xx= [HW,SCSI]
Mauro Carvalho Chehab520a44d2020-03-02 09:15:40 +0100[diff] [blame]32 See Documentation/scsi/aic79xx.rst.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]33
Finn Thain9c41ab22016-03-23 21:10:28 +1100[diff] [blame]34 atascsi= [HW,SCSI]
35 See drivers/scsi/atari_scsi.c.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]36
37 BusLogic= [HW,SCSI]
38 See drivers/scsi/BusLogic.c, comment before function
39 BusLogic_ParseDriverOptions().
40
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]41 gdth= [HW,SCSI]
42 See header of drivers/scsi/gdth.c.
43
44 gvp11= [HW,SCSI]
45
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]46 ips= [HW,SCSI] Adaptec / IBM ServeRAID controller
47 See header of drivers/scsi/ips.c.
48
Finn Thain9c41ab22016-03-23 21:10:28 +1100[diff] [blame]49 mac5380= [HW,SCSI]
50 See drivers/scsi/mac_scsi.c.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]51
Martin K. Petersen864326522017-10-19 10:20:03 -0400[diff] [blame]52 scsi_mod.max_luns=
53 [SCSI] Maximum number of LUNs to probe.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]54 Should be between 1 and 2^32-1.
55
Martin K. Petersen864326522017-10-19 10:20:03 -0400[diff] [blame]56 scsi_mod.max_report_luns=
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]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]
Mauro Carvalho Chehab3c1e6812020-03-02 09:15:49 +0100[diff] [blame]64 See Documentation/scsi/g_NCR5380.rst.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]65
66 ncr53c400= [HW,SCSI]
Mauro Carvalho Chehab3c1e6812020-03-02 09:15:49 +0100[diff] [blame]67 See Documentation/scsi/g_NCR5380.rst.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]68
69 ncr53c400a= [HW,SCSI]
Mauro Carvalho Chehab3c1e6812020-03-02 09:15:49 +0100[diff] [blame]70 See Documentation/scsi/g_NCR5380.rst.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]71
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]72 ncr53c8xx= [HW,SCSI]
73
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]74 osst= [HW,SCSI] SCSI Tape Driver
75 Format: <buffer_size>,<write_threshold>
Mauro Carvalho Chehabbf65c842020-03-02 09:16:09 +0100[diff] [blame]76 See also Documentation/scsi/st.rst.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]77
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]78 scsi_debug_*= [SCSI]
79 See drivers/scsi/scsi_debug.c.
80
Martin K. Petersen864326522017-10-19 10:20:03 -0400[diff] [blame]81 scsi_mod.default_dev_flags=
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]82 [SCSI] SCSI default device flags
83 Format: <integer>
84
Martin K. Petersen864326522017-10-19 10:20:03 -0400[diff] [blame]85 scsi_mod.dev_flags=
86 [SCSI] Black/white list entry for vendor and model
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]87 Format: <vendor>:<model>:<flags>
88 (flags are integer value)
89
Martin K. Petersen864326522017-10-19 10:20:03 -0400[diff] [blame]90 scsi_mod.scsi_logging_level=
91 [SCSI] a bit mask of logging levels
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]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 http://www-128.ibm.com/developerworks/linux/linux390/s390-tools-1.5.4.html
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.)
Mauro Carvalho Chehabbf65c842020-03-02 09:16:09 +0100[diff] [blame]108 See Documentation/scsi/st.rst.
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]109
Randy Dunlap163475f2010-08-14 12:36:14 -0700[diff] [blame]110 wd33c93= [HW,SCSI]
111 See header of drivers/scsi/wd33c93.c.