svn commit: r212271 - head/share/man/man4
Weongyo Jeong
weongyo at FreeBSD.org
Mon Sep 6 22:10:58 UTC 2010
Author: weongyo
Date: Mon Sep 6 22:10:57 2010
New Revision: 212271
URL: http://svn.freebsd.org/changeset/base/212271
Log:
Adds a CAVEATS section to mention DMA issues that currently only
a solution is using PIO mode. As fas as I know all open source based
broadcom drivers for specially LP PHY has this issue because it's
a reverse engineered driver from wl(4).
Pointed by: Warren Block <wblock at wonkity.com>
Modified:
head/share/man/man4/bwn.4
Modified: head/share/man/man4/bwn.4
==============================================================================
--- head/share/man/man4/bwn.4 Mon Sep 6 22:02:08 2010 (r212270)
+++ head/share/man/man4/bwn.4 Mon Sep 6 22:10:57 2010 (r212271)
@@ -125,6 +125,9 @@ The
.Nm
driver first appeared in
.Fx 8.1 .
+.Sh CAVEATS
+Some LP PHY devices have DMA operation problems that in that case try to
+use PIO mode.
.Sh AUTHORS
.An -nosplit
The
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