Document tunable dev.rl.%unit.prefer_iomap

This commit is contained in:
yongari 2010-08-22 21:32:48 +00:00
parent 51ae556c09
commit d13691c661

View File

@ -30,7 +30,7 @@
.\" .\"
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd November 1, 2008 .Dd August 22, 2010
.Dt RL 4 .Dt RL 4
.Os .Os
.Sh NAME .Sh NAME
@ -203,6 +203,13 @@ SOHO (PRAGMATIC) UE-1211C
.El .El
.Sh LOADER TUNABLES .Sh LOADER TUNABLES
.Bl -tag -width indent .Bl -tag -width indent
.It Va dev.rl.%unit.prefer_iomap
This tunable controls which register mapping should be used on the
specified device.
Non-zero value enables I/O space register mapping.
For controllers that have no I/O space register mapping this tunable
should be set to 0 to use I/O space register mapping.
The default value is 1 to use I/O space register mapping.
.It Va dev.rl.%unit.twister_enable .It Va dev.rl.%unit.twister_enable
Non-zero value enables the long cable tuning on the specified device. Non-zero value enables the long cable tuning on the specified device.
Disabled by default. Disabled by default.