svn commit: r211650 - head/share/man/man4
Pyun YongHyeon
yongari at FreeBSD.org
Sun Aug 22 21:32:48 UTC 2010
Author: yongari
Date: Sun Aug 22 21:32:48 2010
New Revision: 211650
URL: http://svn.freebsd.org/changeset/base/211650
Log:
Document tunable dev.rl.%unit.prefer_iomap
Modified:
head/share/man/man4/rl.4
Modified: head/share/man/man4/rl.4
==============================================================================
--- head/share/man/man4/rl.4 Sun Aug 22 21:27:15 2010 (r211649)
+++ head/share/man/man4/rl.4 Sun Aug 22 21:32:48 2010 (r211650)
@@ -30,7 +30,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd November 1, 2008
+.Dd August 22, 2010
.Dt RL 4
.Os
.Sh NAME
@@ -203,6 +203,13 @@ SOHO (PRAGMATIC) UE-1211C
.El
.Sh LOADER TUNABLES
.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
Non-zero value enables the long cable tuning on the specified device.
Disabled by default.
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