Module Name: src
Committed By: dyoung
Date: Fri Jul 8 22:38:08 UTC 2011
Modified Files:
src/share/man/man9: bus_dma.9
Log Message:
Describe some of the expected return codes from bus_dmamap_load(9).
To generate a diff of this commit:
cvs rdiff -u -r1.55 -r1.56 src/share/man/man9/bus_dma.9
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man9/bus_dma.9
diff -u src/share/man/man9/bus_dma.9:1.55 src/share/man/man9/bus_dma.9:1.56
--- src/share/man/man9/bus_dma.9:1.55 Fri Jul 1 22:06:19 2011
+++ src/share/man/man9/bus_dma.9 Fri Jul 8 22:38:08 2011
@@ -1,4 +1,4 @@
-.\" $NetBSD: bus_dma.9,v 1.55 2011/07/01 22:06:19 dyoung Exp $
+.\" $NetBSD: bus_dma.9,v 1.56 2011/07/08 22:38:08 dyoung Exp $
.\"
.\" Copyright (c) 1996, 1997, 1998, 2001, 2005, 2006 The NetBSD Foundation, Inc.
.\" All rights reserved.
@@ -28,7 +28,7 @@
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
-.Dd July 1, 2011
+.Dd July 8, 2011
.Dt BUS_DMA 9
.Os
.Sh NAME
@@ -327,6 +327,17 @@
.Fn bus_dmamap_load .
.Pp
Returns 0 on success, or an error code to indicate mode of failure.
+Possible error codes include the following:
+.Pp
+.Bl -tag -width dmam -compact
+.It Er EINVAL
+.Fa buflen
+is too large for the DMA map.
+.It Er EFBIG
+Too many segments.
+.It Er ENOMEM
+Could not allocate memory for, e.g., a bounce buffer.
+.El
.It Fn bus_dmamap_load_mbuf "tag" "dmam" "chain" "flags"
This is a variation of
.Fn bus_dmamap_load
