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Document tunable dev.rl.%unit.prefer_iomap

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yongari 2010-08-22 21:32:48 +00:00
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9
share/man/man4/rl.4
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@ -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.