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Retire ISA sound card DMA support

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As all ISA sound card drivers have been removed sndbuf_dma no longer
serves any purpose.

Reviewed by:	mav
Relnotes: 	Yes
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D34671
This commit is contained in:
Ed Maste 2022-03-18 12:22:21 -04:00
parent c387c23098
commit 9054e29681
5 changed files with 0 additions and 149 deletions
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1
sys/conf/files
View File

@ -3103,7 +3103,6 @@ dev/smc/if_smc_fdt.c optional smc fdt
dev/snp/snp.c optional snp
dev/sound/clone.c optional sound
dev/sound/unit.c optional sound
dev/sound/isa/sndbuf_dma.c optional sound isa
dev/sound/pci/als4000.c optional snd_als4000 pci
dev/sound/pci/atiixp.c optional snd_atiixp pci
dev/sound/pci/cmi.c optional snd_cmi pci

109
sys/dev/sound/isa/sndbuf_dma.c
View File

@ -1,109 +0,0 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifdef HAVE_KERNEL_OPTION_HEADERS
#include "opt_snd.h"
#endif
#include <dev/sound/pcm/sound.h>
#include <isa/isavar.h>
SND_DECLARE_FILE("$FreeBSD$");
int
sndbuf_dmasetup(struct snd_dbuf *b, struct resource *drq)
{
/* should do isa_dma_acquire/isa_dma_release here */
if (drq == NULL) {
b->dmachan = -1;
} else {
sndbuf_setflags(b, SNDBUF_F_DMA, 1);
b->dmachan = rman_get_start(drq);
}
return 0;
}
int
sndbuf_dmasetdir(struct snd_dbuf *b, int dir)
{
KASSERT(b, ("sndbuf_dmasetdir called with b == NULL"));
KASSERT(sndbuf_getflags(b) & SNDBUF_F_DMA, ("sndbuf_dmasetdir called on non-ISA buffer"));
b->dir = (dir == PCMDIR_PLAY)? ISADMA_WRITE : ISADMA_READ;
return 0;
}
void
sndbuf_dma(struct snd_dbuf *b, int go)
{
KASSERT(b, ("sndbuf_dma called with b == NULL"));
KASSERT(sndbuf_getflags(b) & SNDBUF_F_DMA, ("sndbuf_dma called on non-ISA buffer"));
switch (go) {
case PCMTRIG_START:
/* isa_dmainit(b->chan, size); */
isa_dmastart(b->dir | ISADMA_RAW, b->buf, b->bufsize, b->dmachan);
break;
case PCMTRIG_STOP:
case PCMTRIG_ABORT:
isa_dmastop(b->dmachan);
isa_dmadone(b->dir | ISADMA_RAW, b->buf, b->bufsize, b->dmachan);
break;
}
DEB(printf("buf 0x%p ISA DMA %s, channel %d\n",
b,
(go == PCMTRIG_START)? "started" : "stopped",
b->dmachan));
}
int
sndbuf_dmaptr(struct snd_dbuf *b)
{
int i;
KASSERT(b, ("sndbuf_dmaptr called with b == NULL"));
KASSERT(sndbuf_getflags(b) & SNDBUF_F_DMA, ("sndbuf_dmaptr called on non-ISA buffer"));
if (!sndbuf_runsz(b))
return 0;
i = isa_dmastatus(b->dmachan);
KASSERT(i >= 0, ("isa_dmastatus returned %d", i));
return b->bufsize - i;
}
void
sndbuf_dmabounce(struct snd_dbuf *b)
{
KASSERT(b, ("sndbuf_dmabounce called with b == NULL"));
KASSERT(sndbuf_getflags(b) & SNDBUF_F_DMA, ("sndbuf_dmabounce called on non-ISA buffer"));
/* tell isa_dma to bounce data in/out */
}

10
sys/dev/sound/pcm/buffer.h
View File

@ -28,12 +28,8 @@
* $FreeBSD$
*/
#define SND_DMA(b) (sndbuf_getflags((b)) & SNDBUF_F_DMA)
#define SNDBUF_LOCKASSERT(b)
#define SNDBUF_F_DMA 0x00000001
#define SNDBUF_F_XRUN 0x00000002
#define SNDBUF_F_RUNNING 0x00000004
#define SNDBUF_F_MANAGED 0x00000008
#define SNDBUF_NAMELEN 48
@ -125,12 +121,6 @@ int sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *
u_int32_t sndbuf_getflags(struct snd_dbuf *b);
void sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on);
int sndbuf_dmasetup(struct snd_dbuf *b, struct resource *drq);
int sndbuf_dmasetdir(struct snd_dbuf *b, int dir);
void sndbuf_dma(struct snd_dbuf *b, int go);
int sndbuf_dmaptr(struct snd_dbuf *b);
void sndbuf_dmabounce(struct snd_dbuf *b);
#ifdef OSSV4_EXPERIMENT
void sndbuf_getpeaks(struct snd_dbuf *b, int *lp, int *rp);
#endif

9
sys/dev/sound/pcm/channel.c
View File

@ -29,8 +29,6 @@
* SUCH DAMAGE.
*/
#include "opt_isa.h"
#ifdef HAVE_KERNEL_OPTION_HEADERS
#include "opt_snd.h"
#endif
@ -2191,17 +2189,10 @@ chn_syncstate(struct pcm_channel *c)
int
chn_trigger(struct pcm_channel *c, int go)
{
#ifdef DEV_ISA
struct snd_dbuf *b = c->bufhard;
#endif
struct snddev_info *d = c->parentsnddev;
int ret;
CHN_LOCKASSERT(c);
#ifdef DEV_ISA
if (SND_DMA(b) && (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD))
sndbuf_dmabounce(b);
#endif
if (!PCMTRIG_COMMON(go))
return (CHANNEL_TRIGGER(c->methods, c->devinfo, go));

20
sys/modules/sound/sound/Makefile
View File

@ -34,24 +34,4 @@ CLEANFILES+= feeder_eq_gen.h feeder_rate_gen.h snd_fxdiv_gen.h
EXPORT_SYMS= YES # XXX evaluate
.if ${MACHINE_CPUARCH} != "i386" && ${MACHINE_CPUARCH} != "amd64"
# Create an empty opt_isa.h in order to keep kmod.mk from linking in an
# existing one from KERNBUILDDIR which possibly has DEV_ISA defined so
# sound.ko is always built without isadma support.
opt_isa.h:
:> ${.TARGET}
.else
.if !defined(KERNBUILDDIR)
SRCS+= sndbuf_dma.c
opt_isa.h:
echo "#define DEV_ISA 1" > ${.TARGET}
.else
DEV_ISA!= sed -n '/DEV_ISA/p' ${KERNBUILDDIR}/opt_isa.h
.if !empty(DEV_ISA)
SRCS+= sndbuf_dma.c
.endif
.endif
.endif
.include <bsd.kmod.mk>