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Diffstat (limited to 'misc/man9ossddk/ossddk_dmap_get_dmabuf.9ossddk')
| -rw-r--r-- | misc/man9ossddk/ossddk_dmap_get_dmabuf.9ossddk | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/misc/man9ossddk/ossddk_dmap_get_dmabuf.9ossddk b/misc/man9ossddk/ossddk_dmap_get_dmabuf.9ossddk new file mode 100644 index 0000000..bb0ac54 --- /dev/null +++ b/misc/man9ossddk/ossddk_dmap_get_dmabuf.9ossddk @@ -0,0 +1,46 @@ +'\" te +.\" Copyright (c) 2005, 4Front Technologies 2005\&. +.TH ossddk_dmap_get_dmabuf 9ossddk "12 Sep 2005" "SunOS 5.10" "OSS DDK Services" +.SH "NAME" +ossddk_dmap_get_dmabuf \- Get (kernel) address of the DMA buffer +.PP +.SH "SYNOPSIS" +.nf +#include <sys/soundcard.h> +.LP +#include <sys/ossddk/ossddk.h> +.fi +.LP +\fBunsigned char*\fR ossddk_dmap_get_dmabuf(\fBdmap_t *\fIdmap\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 +.PP +.SH "DESCRIPTION" +.PP +This function returns the kernel virtual address of the DMA buffer allocated +for this dmap, However in most drivers this value has no use. Instead they +should use \fIossddk_dmap_set_phys(9ossddk)\fR to get the memory/bus address +of the buffer. +.PP +.SH "RETURN VALUES" +Kernel virtual address of the DMA buffer (first byte) or NULL if no buffer +is currently allocated. +.PP +.SH "SEE ALSO" +.PP +\fIWriting Sound Device Drivers with OSS DDK\fR +.LP +\fIOpen Sound System Programmer's Guide\fR |