linux-stable/Documentation/scsi/scsi-parameters.rst
Benjamin Block b9789bfbfe scsi: docs: Update outdated link to IBM developerworks
IBM decided to retire a lot of the content that was previously hosted on
"developerworks", and so some of the links we've used for documentation are
now dead or redirect to some general landing page with no correlation to
what the links were meant to provide.

The s390-tools package is meanwhile also hosted on github, so we can link
to the script directly instead of to the archive.

Link: https://lore.kernel.org/r/9ab0341d6ddca46cfc885e4cd9dc38f535969b02.1593780621.git.bblock@linux.ibm.com
Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08 00:50:54 -04:00

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.. SPDX-License-Identifier: GPL-2.0
======================
SCSI Kernel Parameters
======================
See Documentation/admin-guide/kernel-parameters.rst for general information on
specifying module parameters.
This document may not be entirely up to date and comprehensive. The command
``modinfo -p ${modulename}`` shows a current list of all parameters of a loadable
module. Loadable modules, after being loaded into the running kernel, also
reveal their parameters in /sys/module/${modulename}/parameters/. Some of these
parameters may be changed at runtime by the command
``echo -n ${value} > /sys/module/${modulename}/parameters/${parm}``.
::
advansys= [HW,SCSI]
See header of drivers/scsi/advansys.c.
aha152x= [HW,SCSI]
See Documentation/scsi/aha152x.rst.
aha1542= [HW,SCSI]
Format: <portbase>[,<buson>,<busoff>[,<dmaspeed>]]
aic7xxx= [HW,SCSI]
See Documentation/scsi/aic7xxx.rst.
aic79xx= [HW,SCSI]
See Documentation/scsi/aic79xx.rst.
atascsi= [HW,SCSI]
See drivers/scsi/atari_scsi.c.
BusLogic= [HW,SCSI]
See drivers/scsi/BusLogic.c, comment before function
BusLogic_ParseDriverOptions().
gdth= [HW,SCSI]
See header of drivers/scsi/gdth.c.
gvp11= [HW,SCSI]
ips= [HW,SCSI] Adaptec / IBM ServeRAID controller
See header of drivers/scsi/ips.c.
mac5380= [HW,SCSI]
See drivers/scsi/mac_scsi.c.
scsi_mod.max_luns=
[SCSI] Maximum number of LUNs to probe.
Should be between 1 and 2^32-1.
scsi_mod.max_report_luns=
[SCSI] Maximum number of LUNs received.
Should be between 1 and 16384.
NCR_D700= [HW,SCSI]
See header of drivers/scsi/NCR_D700.c.
ncr5380= [HW,SCSI]
See Documentation/scsi/g_NCR5380.rst.
ncr53c400= [HW,SCSI]
See Documentation/scsi/g_NCR5380.rst.
ncr53c400a= [HW,SCSI]
See Documentation/scsi/g_NCR5380.rst.
ncr53c8xx= [HW,SCSI]
osst= [HW,SCSI] SCSI Tape Driver
Format: <buffer_size>,<write_threshold>
See also Documentation/scsi/st.rst.
scsi_debug_*= [SCSI]
See drivers/scsi/scsi_debug.c.
scsi_mod.default_dev_flags=
[SCSI] SCSI default device flags
Format: <integer>
scsi_mod.dev_flags=
[SCSI] Black/white list entry for vendor and model
Format: <vendor>:<model>:<flags>
(flags are integer value)
scsi_mod.scsi_logging_level=
[SCSI] a bit mask of logging levels
See drivers/scsi/scsi_logging.h for bits. Also
settable via sysctl at dev.scsi.logging_level
(/proc/sys/dev/scsi/logging_level).
There is also a nice 'scsi_logging_level' script in the
S390-tools package, available for download at
https://github.com/ibm-s390-tools/s390-tools/blob/master/scripts/scsi_logging_level
scsi_mod.scan= [SCSI] sync (default) scans SCSI busses as they are
discovered. async scans them in kernel threads,
allowing boot to proceed. none ignores them, expecting
user space to do the scan.
sim710= [SCSI,HW]
See header of drivers/scsi/sim710.c.
st= [HW,SCSI] SCSI tape parameters (buffers, etc.)
See Documentation/scsi/st.rst.
wd33c93= [HW,SCSI]
See header of drivers/scsi/wd33c93.c.