[mirror_ubuntu-bionic-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().

	eata=		[HW,SCSI]

	fdomain=	[HW,SCSI]
			See header of drivers/scsi/fdomain.c.

	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.

	ncr53c406a=	[HW,SCSI]

	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.

	sym53c416=	[HW,SCSI]
			See header of drivers/scsi/sym53c416.c.

	tmscsim=	[HW,SCSI]
			See comment before function dc390_setup() in
			drivers/scsi/tmscsim.c.

	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	eata= [HW,SCSI]
163475fb RD	38
163475fb RD	39	fdomain= [HW,SCSI]
	40	See header of drivers/scsi/fdomain.c.
	41
	42	gdth= [HW,SCSI]
	43	See header of drivers/scsi/gdth.c.
	44
	45	gvp11= [HW,SCSI]
	46
163475fb RD	47	ips= [HW,SCSI] Adaptec / IBM ServeRAID controller
	48	See header of drivers/scsi/ips.c.
	49
9c41ab27 FT	50	mac5380= [HW,SCSI]
9c41ab27 FT	51	See drivers/scsi/mac_scsi.c.
163475fb	52
86432652 MP	53	scsi_mod.max_luns=
86432652 MP	54	[SCSI] Maximum number of LUNs to probe.
163475fb RD	55	Should be between 1 and 2^32-1.
163475fb RD	56
86432652	57	scsi_mod.max_report_luns=
163475fb RD	58	[SCSI] Maximum number of LUNs received.
	59	Should be between 1 and 16384.
	60
	61	NCR_D700= [HW,SCSI]
	62	See header of drivers/scsi/NCR_D700.c.
	63
	64	ncr5380= [HW,SCSI]
9c41ab27	65	See Documentation/scsi/g_NCR5380.txt.
163475fb RD	66
163475fb RD	67	ncr53c400= [HW,SCSI]
9c41ab27	68	See Documentation/scsi/g_NCR5380.txt.
163475fb RD	69
163475fb RD	70	ncr53c400a= [HW,SCSI]
9c41ab27	71	See Documentation/scsi/g_NCR5380.txt.
163475fb RD	72
	73	ncr53c406a= [HW,SCSI]
	74
	75	ncr53c8xx= [HW,SCSI]
	76
163475fb RD	77	osst= [HW,SCSI] SCSI Tape Driver
	78	Format: <buffer_size>,<write_threshold>
	79	See also Documentation/scsi/st.txt.
	80
163475fb RD	81	scsi_debug_*= [SCSI]
	82	See drivers/scsi/scsi_debug.c.
	83
86432652	84	scsi_mod.default_dev_flags=
163475fb RD	85	[SCSI] SCSI default device flags
	86	Format: <integer>
	87
86432652 MP	88	scsi_mod.dev_flags=
86432652 MP	89	[SCSI] Black/white list entry for vendor and model
163475fb RD	90	Format: <vendor>:<model>:<flags>
	91	(flags are integer value)
	92
86432652 MP	93	scsi_mod.scsi_logging_level=
86432652 MP	94	[SCSI] a bit mask of logging levels
163475fb RD	95	See drivers/scsi/scsi_logging.h for bits. Also
	96	settable via sysctl at dev.scsi.logging_level
	97	(/proc/sys/dev/scsi/logging_level).
	98	There is also a nice 'scsi_logging_level' script in the
	99	S390-tools package, available for download at
	100	http://www-128.ibm.com/developerworks/linux/linux390/s390-tools-1.5.4.html
	101
	102	scsi_mod.scan= [SCSI] sync (default) scans SCSI busses as they are
	103	discovered. async scans them in kernel threads,
	104	allowing boot to proceed. none ignores them, expecting
	105	user space to do the scan.
	106
	107	sim710= [SCSI,HW]
	108	See header of drivers/scsi/sim710.c.
	109
	110	st= [HW,SCSI] SCSI tape parameters (buffers, etc.)
	111	See Documentation/scsi/st.txt.
	112
	113	sym53c416= [HW,SCSI]
	114	See header of drivers/scsi/sym53c416.c.
	115
163475fb RD	116	tmscsim= [HW,SCSI]
	117	See comment before function dc390_setup() in
	118	drivers/scsi/tmscsim.c.
	119
163475fb RD	120	wd33c93= [HW,SCSI]
163475fb RD	121	See header of drivers/scsi/wd33c93.c.