'\" te .\" Copyright (c) 2005, 4Front Technologies 2005\&. .TH ossddk_dmap_set_dmabuf 9ossddk "12 Sep 2005" "SunOS 5.10" "OSS DDK Services" .SH "NAME" ossddk_dmap_set_dmabuf \- Set the DMA buffer virtual address .PP .SH "SYNOPSIS" .nf #include .LP #include .fi .LP \fBvoid\fR ossddk_dmap_set_dmabuf(\fBdmap_t *\fIdmap\fP, \fBunsigned char *\fIbuf\fP); .PP .SH "INTERFACE LEVEL" .PP Open Sound System specific (OSS 4.0 DDK)\&. .PP .SH "ARGUMENTS" .PP .sp .ne 2 .mk \fB\fIdmap\fR .in +16n .rt Audio buffer handle. .in -16n .sp .ne 2 .mk \fB\fIbuf\fR .in +16n .rt Kernel virtual address of the DMA buffer. .in -16n .PP .SH "DESCRIPTION" .PP If an audio driver manages the DMA buffer itself (it has the alloc_buffer and free_buffer methods in it's callback table) it can set the DMA buffer address using \fIossddk_dmap_set_dmabuf\fR. The buffer size can be set using \fIossddk_dmap_set_buffsize(9ossddk)\fR. .PP In addition to the virtual address the driver should usually set the physical memory/bus address too using \fIossddk_dmap_set_phys(9ossddk)\fR. .PP .SH "SEE ALSO" .PP \fIossddk_dmap_set_phys(9ossddk)\fR. \fIossddk_dmap_set_buffsize(9ossddk)\fR. .LP \fIWriting Sound Device Drivers with OSS DDK\fR .LP \fIOpen Sound System Programmer's Guide\fR