1 .. SPDX-License-Identifier: GPL-2.0
2
3 ======================
4 SCSI Kernel Parameters
5 ======================
6
7 See Documentation/admin-guide/kernel-parameters.rst for general information on
8 specifying module parameters.
9
10 This document may not be entirely up to date and comprehensive. The command
11 ``modinfo -p ${modulename}`` shows a current list of all parameters of a loadable
12 module. Loadable modules, after being loaded into the running kernel, also
13 reveal their parameters in /sys/module/${modulename}/parameters/. Some of these
14 parameters 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.
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