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Code Issues Releases Activity

make buffer size adjustable.

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This commit is contained in:
Cameron Grant 2001-09-18 15:12:35 +00:00
parent fca71897c4
commit c2995ba2d4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=83619
1 changed files with 7 additions and 5 deletions
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12
sys/dev/sound/isa/mss.c
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@ -37,7 +37,7 @@ SND_DECLARE_FILE("$FreeBSD$");
#include "mixer_if.h"
#define MSS_BUFFSIZE (4096)
#define MSS_DEFAULT_BUFSZ (4096)
#define abs(x) (((x) < 0) ? -(x) : (x))
#define MSS_INDEXED_REGS 0x20
#define OPL_INDEXED_REGS 0x19
@ -79,6 +79,7 @@ struct mss_info {
int indir_rid;
int password; /* password for opti9xx cards */
int passwdreg; /* password register */
unsigned int bufsize;
struct mss_chinfo pch, rch;
};
@ -328,12 +329,12 @@ mss_alloc_resources(struct mss_info *mss, device_t dev)
if (ok) {
pdma = rman_get_start(mss->drq1);
isa_dma_acquire(pdma);
isa_dmainit(pdma, MSS_BUFFSIZE);
isa_dmainit(pdma, mss->bufsize);
mss->bd_flags &= ~BD_F_DUPLEX;
if (mss->drq2) {
rdma = rman_get_start(mss->drq2);
isa_dma_acquire(rdma);
isa_dmainit(rdma, MSS_BUFFSIZE);
isa_dmainit(rdma, mss->bufsize);
mss->bd_flags |= BD_F_DUPLEX;
} else mss->drq2 = mss->drq1;
}
@ -1120,7 +1121,7 @@ msschan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *
ch->channel = c;
ch->buffer = b;
ch->dir = dir;
if (sndbuf_alloc(ch->buffer, mss->parent_dmat, MSS_BUFFSIZE) == -1) return NULL;
if (sndbuf_alloc(ch->buffer, mss->parent_dmat, mss->bufsize) == -1) return NULL;
sndbuf_isadmasetup(ch->buffer, (dir == PCMDIR_PLAY)? mss->drq1 : mss->drq2);
return ch;
}
@ -1658,6 +1659,7 @@ mss_doattach(device_t dev, struct mss_info *mss)
char status[SND_STATUSLEN];
mss->lock = snd_mtxcreate(device_get_nameunit(dev));
mss->bufsize = pcm_getbuffersize(dev, 4096, MSS_DEFAULT_BUFSZ, 65536);
if (!mss_alloc_resources(mss, dev)) goto no;
mss_init(mss, dev);
pdma = rman_get_start(mss->drq1);
@ -1708,7 +1710,7 @@ mss_doattach(device_t dev, struct mss_info *mss)
/*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/MSS_BUFFSIZE, /*nsegments*/1,
/*maxsize*/mss->bufsize, /*nsegments*/1,
/*maxsegz*/0x3ffff,
/*flags*/0, &mss->parent_dmat) != 0) {
device_printf(dev, "unable to create dma tag\n");