.\" This manpage has been automatically generated by docbook2man 
.\" from a DocBook document.  This tool can be found at:
.\" <http://shell.ipoline.com/~elmert/comp/docbook2X/> 
.\" Please send any bug reports, improvements, comments, patches, 
.\" etc. to Steve Cheng <steve@ggi-project.org>.
.TH "SN_DMA_MAP_SINGLE" "9" "09 October 2005" "" ""

.SH NAME
sn_dma_map_single \- map a single page for DMA
.SH SYNOPSIS
"SYNOPSIS"
.sp
\fB
.sp
dma_addr_t sn_dma_map_single  (struct device * \fIdev\fB, void * \fIcpu_addr\fB, size_t \fIsize\fB, int \fIdirection\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIdev\fB\fR
device to map for
.TP
\fB\fIcpu_addr\fB\fR
kernel virtual address of the region to map
.TP
\fB\fIsize\fB\fR
size of the region
.TP
\fB\fIdirection\fB\fR
DMA direction
.SH "DESCRIPTION"
.PP
Map the region pointed to by \fIcpu_addr\fR for DMA and return the
DMA address.
.PP
We map this to the one step pcibr_dmamap_trans interface rather than
the two step pcibr_dmamap_alloc/pcibr_dmamap_addr because we have
no way of saving the dmamap handle from the alloc to later free
(which is pretty much unacceptable).
.SH "TODO"
.PP
simplify our interface;
figure out how to save dmamap handle so can use two step.