[mirror_ubuntu-jammy-kernel.git] / Documentation / scsi / scsi-parameters.txt

                          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.txt.

	aha1542=	[HW,SCSI]
			Format: <portbase>[,<buson>,<busoff>[,<dmaspeed>]]

	aic7xxx=	[HW,SCSI]
			See Documentation/scsi/aic7xxx.txt.

	aic79xx=	[HW,SCSI]
			See Documentation/scsi/aic79xx.txt.

	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.txt.

	ncr53c400=	[HW,SCSI]
			See Documentation/scsi/g_NCR5380.txt.

	ncr53c400a=	[HW,SCSI]
			See Documentation/scsi/g_NCR5380.txt.

	ncr53c8xx=	[HW,SCSI]

	osst=		[HW,SCSI] SCSI Tape Driver
			Format: <buffer_size>,<write_threshold>
			See also Documentation/scsi/st.txt.

	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
			http://www-128.ibm.com/developerworks/linux/linux390/s390-tools-1.5.4.html

	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.txt.

	wd33c93=	[HW,SCSI]
			See header of drivers/scsi/wd33c93.c.
Commit	Line	Data
163475fb RD	1	SCSI Kernel Parameters
	2	~~~~~~~~~~~~~~~~~~~~~~
	3
8c27ceff	4	See Documentation/admin-guide/kernel-parameters.rst for general information on
163475fb RD	5	specifying module parameters.
	6
	7	This document may not be entirely up to date and comprehensive. The command
	8	"modinfo -p ${modulename}" shows a current list of all parameters of a loadable
	9	module. Loadable modules, after being loaded into the running kernel, also
	10	reveal their parameters in /sys/module/${modulename}/parameters/. Some of these
	11	parameters may be changed at runtime by the command
	12	"echo -n ${value} > /sys/module/${modulename}/parameters/${parm}".
	13
	14
	15	advansys= [HW,SCSI]
	16	See header of drivers/scsi/advansys.c.
	17
	18	aha152x= [HW,SCSI]
	19	See Documentation/scsi/aha152x.txt.
	20
	21	aha1542= [HW,SCSI]
	22	Format: <portbase>[,<buson>,<busoff>[,<dmaspeed>]]
	23
	24	aic7xxx= [HW,SCSI]
	25	See Documentation/scsi/aic7xxx.txt.
	26
	27	aic79xx= [HW,SCSI]
	28	See Documentation/scsi/aic79xx.txt.
	29
9c41ab27 FT	30	atascsi= [HW,SCSI]
9c41ab27 FT	31	See drivers/scsi/atari_scsi.c.
163475fb RD	32
	33	BusLogic= [HW,SCSI]
	34	See drivers/scsi/BusLogic.c, comment before function
	35	BusLogic_ParseDriverOptions().
	36
163475fb RD	37	gdth= [HW,SCSI]
	38	See header of drivers/scsi/gdth.c.
	39
	40	gvp11= [HW,SCSI]
	41
163475fb RD	42	ips= [HW,SCSI] Adaptec / IBM ServeRAID controller
	43	See header of drivers/scsi/ips.c.
	44
9c41ab27 FT	45	mac5380= [HW,SCSI]
9c41ab27 FT	46	See drivers/scsi/mac_scsi.c.
163475fb	47
86432652 MP	48	scsi_mod.max_luns=
86432652 MP	49	[SCSI] Maximum number of LUNs to probe.
163475fb RD	50	Should be between 1 and 2^32-1.
163475fb RD	51
86432652	52	scsi_mod.max_report_luns=
163475fb RD	53	[SCSI] Maximum number of LUNs received.
	54	Should be between 1 and 16384.
	55
	56	NCR_D700= [HW,SCSI]
	57	See header of drivers/scsi/NCR_D700.c.
	58
	59	ncr5380= [HW,SCSI]
9c41ab27	60	See Documentation/scsi/g_NCR5380.txt.
163475fb RD	61
163475fb RD	62	ncr53c400= [HW,SCSI]
9c41ab27	63	See Documentation/scsi/g_NCR5380.txt.
163475fb RD	64
163475fb RD	65	ncr53c400a= [HW,SCSI]
9c41ab27	66	See Documentation/scsi/g_NCR5380.txt.
163475fb	67
163475fb RD	68	ncr53c8xx= [HW,SCSI]
163475fb RD	69
163475fb RD	70	osst= [HW,SCSI] SCSI Tape Driver
	71	Format: <buffer_size>,<write_threshold>
	72	See also Documentation/scsi/st.txt.
	73
163475fb RD	74	scsi_debug_*= [SCSI]
	75	See drivers/scsi/scsi_debug.c.
	76
86432652	77	scsi_mod.default_dev_flags=
163475fb RD	78	[SCSI] SCSI default device flags
	79	Format: <integer>
	80
86432652 MP	81	scsi_mod.dev_flags=
86432652 MP	82	[SCSI] Black/white list entry for vendor and model
163475fb RD	83	Format: <vendor>:<model>:<flags>
	84	(flags are integer value)
	85
86432652 MP	86	scsi_mod.scsi_logging_level=
86432652 MP	87	[SCSI] a bit mask of logging levels
163475fb RD	88	See drivers/scsi/scsi_logging.h for bits. Also
	89	settable via sysctl at dev.scsi.logging_level
	90	(/proc/sys/dev/scsi/logging_level).
	91	There is also a nice 'scsi_logging_level' script in the
	92	S390-tools package, available for download at
	93	http://www-128.ibm.com/developerworks/linux/linux390/s390-tools-1.5.4.html
	94
	95	scsi_mod.scan= [SCSI] sync (default) scans SCSI busses as they are
	96	discovered. async scans them in kernel threads,
	97	allowing boot to proceed. none ignores them, expecting
	98	user space to do the scan.
	99
	100	sim710= [SCSI,HW]
	101	See header of drivers/scsi/sim710.c.
	102
	103	st= [HW,SCSI] SCSI tape parameters (buffers, etc.)
	104	See Documentation/scsi/st.txt.
	105
163475fb RD	106	wd33c93= [HW,SCSI]
163475fb RD	107	See header of drivers/scsi/wd33c93.c.