LXR linux/Documentation/scsi/scsi-parameters.rst

   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