Module Name: src
Committed By: riastradh
Date: Mon Aug 20 14:23:27 UTC 2018
Modified Files:
src/share/man/man9: bus_dma.9
Log Message:
Clarify that bus_dmamem_alloc boundary can be zero for no constraint.
To generate a diff of this commit:
cvs rdiff -u -r1.65 -r1.66 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.9:1.65 src/share/man/man9/bus_dma.9:1.66
--- src/share/man/man9/bus_dma.9:1.65 Sun Nov 12 21:14:33 2017
+++ src/share/man/man9/bus_dma.9 Mon Aug 20 14:23:27 2018
@@ -1,4 +1,4 @@
-.\" $NetBSD: bus_dma.9,v 1.65 2017/11/12 21:14:33 riastradh Exp $
+.\" $NetBSD: bus_dma.9,v 1.66 2018/08/20 14:23:27 riastradh Exp $
.\"
.\" Copyright (c) 1996, 1997, 1998, 2001, 2005, 2006 The NetBSD Foundation, Inc.
.\" All rights reserved.
@@ -533,8 +533,7 @@ Behavior is not defined if invalid argum
If given valid arguments,
.Fn bus_dmamap_sync
always succeeds.
-.\" XXX: This does not work with all the arguments.
-.It Fn bus_dmamem_alloc "tag" "size" "alignment" "boundary" "segs" "..."
+.It Fn bus_dmamem_alloc "tag" "size" "alignment" "boundary" "segs" "nsegs" "rsegs" "flags"
Allocates memory that is "DMA safe" for the bus corresponding to the
given tag.
.Pp
@@ -571,6 +570,9 @@ Each segment in the allocated memory mus
(relative to zero).
This value must be a power of two.
A boundary value less than the size of the allocation is invalid.
+If no boundary condition needs to be observed, a
+.Fa boundary
+argument of 0 should be used.
.It Fa segs
An array of bus_dma_segment_t's, filled in as memory is allocated,
representing the opaque addresses of the memory chunks.
