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allocm, freem: one step closer to reality.

This commit is contained in:
kleink 1999-06-16 14:19:27 +00:00
parent a11ec6ccb8
commit f5326607ab
1 changed files with 6 additions and 6 deletions
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12
share/man/man9/audio.9
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@ -1,4 +1,4 @@
.\" $NetBSD: audio.9,v 1.12 1999/06/12 20:10:55 kleink Exp $
.\" $NetBSD: audio.9,v 1.13 1999/06/16 14:19:27 kleink Exp $
.\"
.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
.\" All rights reserved.
@ -81,8 +81,8 @@ struct audio_hw_if {
int (*query_devinfo)__P((void *, mixer_devinfo_t *));
void *(*alloc)__P((void *, unsigned long, int, int));
void (*free)__P((void *, void *, int));
void *(*allocm)__P((void *, int, size_t, int, int));
void (*freem)__P((void *, void *, int));
size_t (*round_buffersize)__P((void *, int, size_t));
int (*mappage)__P((void *, void *, int, int));
@ -322,16 +322,16 @@ is used. It should fill the
.Va mixer_devinfo_t
struct.
Return 0 on success, otherwise an error code.
.It Dv "void *alloc(void *hdl, u_long size, int type, int flags)"
.It Dv "void *allocm(void *hdl, int direction, size_t size, int type, int flags)"
.br
optional, is called to allocate the device buffers. If not present
.Xr malloc 9
is used instead (with the same arguments except the first).
is used instead (with the same arguments but the first two).
The reason for using a device dependent routine instead of
.Xr malloc 9
is that some buses need special allocation to do DMA.
Returns the address of the buffer, or 0 on failure.
.It Dv void free(void *hdl, void *addr, int type)
.It Dv void freem(void *hdl, void *addr, int type)
optional, is called to free memory allocated by
.Va alloc .
If not supplied