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