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author | 2012-12-10 13:01:26 +0000 | |
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committer | 2012-12-10 13:01:26 +0000 | |
commit | b07645e834b6575e06590560e84de421cd3a3f56 (patch) | |
tree | 3c7478ed64f6d790e4b495cc1794318dcd7ab662 /share/man/man9 | |
parent | add -i to usage(); ok krw (diff) | |
download | wireguard-openbsd-b07645e834b6575e06590560e84de421cd3a3f56.tar.xz wireguard-openbsd-b07645e834b6575e06590560e84de421cd3a3f56.zip |
Mention the BUS_DMA_NOCACHE flag, prodded by oga, reads ok to jmc@
Diffstat (limited to 'share/man/man9')
-rw-r--r-- | share/man/man9/bus_dma.9 | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/share/man/man9/bus_dma.9 b/share/man/man9/bus_dma.9 index f5ac8a9be8f..cf2ee26ec0c 100644 --- a/share/man/man9/bus_dma.9 +++ b/share/man/man9/bus_dma.9 @@ -1,4 +1,4 @@ -.\" $OpenBSD: bus_dma.9,v 1.29 2010/12/26 15:40:57 miod Exp $ +.\" $OpenBSD: bus_dma.9,v 1.30 2012/12/10 13:01:26 mpi Exp $ .\" $NetBSD: bus_dma.9,v 1.14 2000/06/14 06:49:19 cgd Exp $ .\" .\" Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc. @@ -29,7 +29,7 @@ .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" -.Dd $Mdocdate: December 26 2010 $ +.Dd $Mdocdate: December 10 2012 $ .Dt BUS_DMA 9 .Os .Sh NAME @@ -747,6 +747,11 @@ table entries. If it is determined that the mapping is DMA coherent, state may be placed into the DMA map for use by later calls to .Fn bus_dmamap_sync . +.It Dv BUS_DMA_NOCACHE +This flag is a +.Em hint +to machine-dependent code. +If possible, map the memory uncached. .El .El .Pp @@ -822,6 +827,10 @@ bus-dependent functionality. See .Fn bus_dmamem_map above for a description of this flag. +.It Dv BUS_DMA_NOCACHE +See +.Fn bus_dmamem_map +above for a description of this flag. .El .El .Sh SEE ALSO |