545 lines
15 KiB
C
545 lines
15 KiB
C
/*
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* Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/kernel.h>
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#include <dev/pcm/sound.h>
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static int getchns(snddev_info *d, int chan, pcm_channel **rdch, pcm_channel **wrch);
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static pcm_channel *
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allocchn(snddev_info *d, int direction)
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{
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pcm_channel *chns = (direction == PCMDIR_PLAY)? d->play : d->rec;
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int i, cnt = (direction == PCMDIR_PLAY)? d->playcount : d->reccount;
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for (i = 0; i < cnt; i++) {
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if (!(chns[i].flags & CHN_F_BUSY)) {
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chns[i].flags |= CHN_F_BUSY;
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return &chns[i];
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}
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}
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return NULL;
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}
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static int
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getchns(snddev_info *d, int chan, pcm_channel **rdch, pcm_channel **wrch)
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{
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if ((d->flags & SD_F_PRIO_SET) == SD_F_PRIO_SET)
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panic("read and write both prioritised");
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if (d->flags & SD_F_SIMPLEX) {
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*rdch = (d->flags & SD_F_PRIO_RD)? d->arec[chan] : &d->fakechan;
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*wrch = (d->flags & SD_F_PRIO_WR)? d->aplay[chan] : &d->fakechan;
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} else {
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*rdch = d->arec[chan];
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*wrch = d->aplay[chan];
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}
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return 0;
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}
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static void
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setchns(snddev_info *d, int chan)
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{
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if ((d->flags & SD_F_PRIO_SET) == SD_F_PRIO_SET)
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panic("read and write both prioritised");
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d->flags |= SD_F_DIR_SET;
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if (d->flags & SD_F_EVILSB16) {
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if ((d->flags & SD_F_PRIO_RD) && (d->aplay[chan])) {
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pcm_channel *tmp;
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tmp = d->arec[chan];
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d->arec[chan] = d->aplay[chan];
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d->aplay[chan] = tmp;
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}
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if (d->aplay[chan]) chn_setdir(d->aplay[chan], PCMDIR_PLAY);
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if (d->arec[chan]) chn_setdir(d->arec[chan], PCMDIR_REC);
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}
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}
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int
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dsp_open(snddev_info *d, int chan, int oflags, int devtype)
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{
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pcm_channel *rdch = NULL, *wrch = NULL;
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u_int32_t fmt;
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if (chan >= d->chancount) return ENODEV;
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if (d->aplay[chan] || d->arec[chan]) return EBUSY;
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if (oflags & FREAD) {
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rdch = allocchn(d, PCMDIR_REC);
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if (!rdch) return EBUSY;
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}
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if (oflags & FWRITE) {
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wrch = allocchn(d, PCMDIR_PLAY);
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if (!wrch) {
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if (rdch) rdch->flags &= ~CHN_F_BUSY;
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return EBUSY;
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}
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}
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d->aplay[chan] = wrch;
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d->arec[chan] = rdch;
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switch (devtype) {
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case SND_DEV_DSP16:
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fmt = AFMT_S16_LE;
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break;
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case SND_DEV_DSP:
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fmt = AFMT_U8;
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break;
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case SND_DEV_AUDIO:
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fmt = AFMT_MU_LAW;
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break;
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default:
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return ENXIO;
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}
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if (rdch) {
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chn_reset(rdch);
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if (oflags & O_NONBLOCK) rdch->flags |= CHN_F_NBIO;
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rdch->volume = (100 << 8) | 100;
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rdch->format = fmt;
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rdch->speed = DSP_DEFAULT_SPEED;
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rdch->blocksize = 2048;
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}
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if (wrch) {
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chn_reset(wrch);
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if (oflags & O_NONBLOCK) wrch->flags |= CHN_F_NBIO;
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wrch->volume = (100 << 8) | 100;
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wrch->format = fmt;
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wrch->speed = DSP_DEFAULT_SPEED;
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wrch->blocksize = 2048;
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}
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return 0;
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}
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int
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dsp_close(snddev_info *d, int chan, int devtype)
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{
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pcm_channel *rdch, *wrch;
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d->flags &= ~SD_F_TRANSIENT;
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rdch = d->arec[chan];
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wrch = d->aplay[chan];
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if (rdch) {
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chn_abort(rdch);
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rdch->flags &= ~(CHN_F_BUSY | CHN_F_RUNNING | CHN_F_MAPPED);
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}
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if (wrch) wrch->flags &= ~(CHN_F_BUSY | CHN_F_RUNNING | CHN_F_MAPPED);
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d->aplay[chan] = NULL;
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d->arec[chan] = NULL;
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return 0;
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}
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int
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dsp_read(snddev_info *d, int chan, struct uio *buf, int flag)
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{
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pcm_channel *rdch, *wrch;
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if (!(d->flags & SD_F_PRIO_SET)) d->flags |= SD_F_PRIO_RD;
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if (!(d->flags & SD_F_DIR_SET)) setchns(d, chan);
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getchns(d, chan, &rdch, &wrch);
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if (!rdch || !(rdch->flags & CHN_F_BUSY))
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panic("dsp_read: non%s channel", rdch? "busy" : "existant");
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if (rdch->flags & CHN_F_MAPPED) return EINVAL;
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if (!(rdch->flags & CHN_F_RUNNING)) rdch->flags |= CHN_F_RUNNING;
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return chn_read(rdch, buf);
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}
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int
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dsp_write(snddev_info *d, int chan, struct uio *buf, int flag)
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{
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pcm_channel *rdch, *wrch;
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if (!(d->flags & SD_F_PRIO_SET)) d->flags |= SD_F_PRIO_WR;
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if (!(d->flags & SD_F_DIR_SET)) setchns(d, chan);
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getchns(d, chan, &rdch, &wrch);
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if (!wrch || !(wrch->flags & CHN_F_BUSY))
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panic("dsp_write: non%s channel", wrch? "busy" : "existant");
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if (wrch->flags & CHN_F_MAPPED) return EINVAL;
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if (!(wrch->flags & CHN_F_RUNNING)) wrch->flags |= CHN_F_RUNNING;
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return chn_write(wrch, buf);
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}
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int
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dsp_ioctl(snddev_info *d, int chan, u_long cmd, caddr_t arg)
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{
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int ret = 0, *arg_i = (int *)arg;
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u_long s;
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pcm_channel *wrch = NULL, *rdch = NULL;
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getchns(d, chan, &rdch, &wrch);
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/*
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* all routines are called with int. blocked. Make sure that
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* ints are re-enabled when calling slow or blocking functions!
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*/
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s = spltty();
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switch(cmd) {
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/*
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* we start with the new ioctl interface.
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*/
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case AIONWRITE: /* how many bytes can write ? */
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if (wrch && wrch->buffer.dl) chn_dmaupdate(wrch);
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*arg_i = wrch? wrch->buffer.fl : 0;
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break;
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case AIOSSIZE: /* set the current blocksize */
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{
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struct snd_size *p = (struct snd_size *)arg;
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splx(s);
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if (wrch) chn_setblocksize(wrch, p->play_size);
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if (rdch) chn_setblocksize(rdch, p->rec_size);
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}
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/* FALLTHROUGH */
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case AIOGSIZE: /* get the current blocksize */
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{
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struct snd_size *p = (struct snd_size *)arg;
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if (wrch) p->play_size = wrch->blocksize;
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if (rdch) p->rec_size = rdch->blocksize;
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}
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break;
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case AIOSFMT:
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{
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snd_chan_param *p = (snd_chan_param *)arg;
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splx(s);
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if (wrch) {
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chn_setformat(wrch, p->play_format);
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chn_setspeed(wrch, p->play_rate);
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}
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if (rdch) {
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chn_setformat(rdch, p->rec_format);
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chn_setspeed(rdch, p->rec_rate);
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}
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}
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/* FALLTHROUGH */
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case AIOGFMT:
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{
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snd_chan_param *p = (snd_chan_param *)arg;
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p->play_rate = wrch? wrch->speed : 0;
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p->rec_rate = rdch? rdch->speed : 0;
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p->play_format = wrch? wrch->format : 0;
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p->rec_format = rdch? rdch->format : 0;
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}
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break;
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case AIOGCAP: /* get capabilities */
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{
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snd_capabilities *p = (snd_capabilities *)arg;
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pcmchan_caps *pcaps = NULL, *rcaps = NULL;
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if (rdch) rcaps = chn_getcaps(rdch);
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if (wrch) pcaps = chn_getcaps(wrch);
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p->rate_min = max(rcaps? rcaps->minspeed : 0,
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pcaps? pcaps->minspeed : 0);
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p->rate_max = min(rcaps? rcaps->maxspeed : 1000000,
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pcaps? pcaps->maxspeed : 1000000);
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p->bufsize = min(rdch? rdch->buffer.bufsize : 1000000,
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wrch? wrch->buffer.bufsize : 1000000);
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/* XXX bad on sb16 */
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p->formats = (rcaps? rcaps->formats : 0xffffffff) &
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(pcaps? pcaps->formats : 0xffffffff);
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p->mixers = 1; /* default: one mixer */
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p->inputs = d->mixer.devs;
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p->left = p->right = 100;
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}
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break;
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case AIOSTOP:
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if (*arg_i == AIOSYNC_PLAY && wrch) *arg_i = chn_abort(wrch);
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else if (*arg_i == AIOSYNC_CAPTURE && rdch) *arg_i = chn_abort(rdch);
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else {
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splx(s);
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printf("AIOSTOP: bad channel 0x%x\n", *arg_i);
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*arg_i = 0;
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}
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break;
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case AIOSYNC:
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printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n",
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((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos);
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break;
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/*
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* here follow the standard ioctls (filio.h etc.)
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*/
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case FIONREAD: /* get # bytes to read */
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if (rdch && rdch->buffer.dl) chn_dmaupdate(rdch);
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*arg_i = rdch? rdch->buffer.rl : 0;
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break;
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case FIOASYNC: /*set/clear async i/o */
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DEB( printf("FIOASYNC\n") ; )
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break;
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case SNDCTL_DSP_NONBLOCK:
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case FIONBIO: /* set/clear non-blocking i/o */
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if (rdch) rdch->flags &= ~CHN_F_NBIO;
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if (wrch) wrch->flags &= ~CHN_F_NBIO;
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if (*arg_i) {
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if (rdch) rdch->flags |= CHN_F_NBIO;
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if (wrch) wrch->flags |= CHN_F_NBIO;
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}
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break;
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/*
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* Finally, here is the linux-compatible ioctl interface
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*/
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#define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int)
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case THE_REAL_SNDCTL_DSP_GETBLKSIZE:
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case SNDCTL_DSP_GETBLKSIZE:
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*arg_i = wrch? wrch->blocksize : 0; /* XXX rdch? */
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break ;
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case SNDCTL_DSP_SETBLKSIZE:
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splx(s);
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if (wrch) chn_setblocksize(wrch, *arg_i);
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if (rdch) chn_setblocksize(rdch, *arg_i);
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break;
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case SNDCTL_DSP_RESET:
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DEB(printf("dsp reset\n"));
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if (wrch) chn_abort(wrch);
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if (rdch) chn_abort(rdch);
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break;
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case SNDCTL_DSP_SYNC:
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DEB(printf("dsp sync\n"));
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splx(s);
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if (wrch) chn_sync(wrch, wrch->buffer.bufsize - 4);
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break;
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case SNDCTL_DSP_SPEED:
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splx(s);
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if (wrch) chn_setspeed(wrch, *arg_i);
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if (rdch) chn_setspeed(rdch, *arg_i);
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/* fallthru */
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case SOUND_PCM_READ_RATE:
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*arg_i = wrch? wrch->speed : rdch->speed;
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break;
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case SNDCTL_DSP_STEREO:
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splx(s);
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if (wrch) chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) |
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((*arg_i)? AFMT_STEREO : 0));
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if (rdch) chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) |
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((*arg_i)? AFMT_STEREO : 0));
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*arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 1 : 0;
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break;
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case SOUND_PCM_WRITE_CHANNELS:
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splx(s);
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if (wrch) chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) |
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((*arg_i == 2)? AFMT_STEREO : 0));
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if (rdch) chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) |
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((*arg_i == 2)? AFMT_STEREO : 0));
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/* fallthru */
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case SOUND_PCM_READ_CHANNELS:
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*arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 2 : 1;
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break;
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case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */
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*arg_i = wrch? chn_getcaps(wrch)->formats : chn_getcaps(rdch)->formats;
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break ;
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case SNDCTL_DSP_SETFMT: /* sets _one_ format */
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splx(s);
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if (wrch) chn_setformat(wrch, *arg_i);
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if (rdch) chn_setformat(rdch, *arg_i);
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*arg_i = wrch? wrch->format : rdch->format;
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break;
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case SNDCTL_DSP_SUBDIVIDE:
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/* XXX watch out, this is RW! */
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DEB(printf("SNDCTL_DSP_SUBDIVIDE unimplemented\n");)
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break;
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case SNDCTL_DSP_SETFRAGMENT:
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/* XXX watch out, this is RW! */
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DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg));
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{
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int bytes = 1 << min(*arg_i & 0xffff, 16);
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int count = (*arg_i >> 16) & 0xffff;
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pcm_channel *c = wrch? wrch : rdch;
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splx(s);
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if (rdch) chn_setblocksize(rdch, bytes);
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if (wrch) chn_setblocksize(wrch, bytes);
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/* eg: 4dwave can only interrupt at buffer midpoint, so
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* it will force blocksize == bufsize/2
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*/
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count = c->buffer.bufsize / c->blocksize;
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bytes = ffs(c->blocksize) - 1;
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*arg_i = (count << 16) | bytes;
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}
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break;
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case SNDCTL_DSP_GETISPACE:
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/* return space available in the input queue */
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{
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audio_buf_info *a = (audio_buf_info *)arg;
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if (rdch) {
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snd_dbuf *b = &rdch->buffer;
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if (b->dl) chn_dmaupdate(rdch);
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a->bytes = b->fl;
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a->fragments = 1;
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a->fragstotal = b->bufsize / rdch->blocksize;
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a->fragsize = rdch->blocksize;
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}
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}
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break;
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case SNDCTL_DSP_GETOSPACE:
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/* return space available in the output queue */
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{
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audio_buf_info *a = (audio_buf_info *)arg;
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if (wrch) {
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snd_dbuf *b = &wrch->buffer;
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if (b->dl) chn_dmaupdate(wrch);
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a->bytes = b->fl;
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a->fragments = 1;
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a->fragstotal = b->bufsize / wrch->blocksize;
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a->fragsize = wrch->blocksize;
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}
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}
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break;
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case SNDCTL_DSP_GETIPTR:
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{
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count_info *a = (count_info *)arg;
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if (rdch) {
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snd_dbuf *b = &rdch->buffer;
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if (b->dl) chn_dmaupdate(rdch);
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a->bytes = b->total;
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a->blocks = (b->total - b->prev_total) / rdch->blocksize;
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a->ptr = b->fp;
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b->prev_total += a->blocks * rdch->blocksize;
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} else ret = EINVAL;
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}
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break;
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case SNDCTL_DSP_GETOPTR:
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{
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count_info *a = (count_info *)arg;
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if (wrch) {
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snd_dbuf *b = &wrch->buffer;
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if (b->dl) chn_dmaupdate(wrch);
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a->bytes = b->total;
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a->blocks = (b->total - b->prev_total) / wrch->blocksize;
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a->ptr = b->rp;
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b->prev_total += a->blocks * wrch->blocksize;
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} else ret = EINVAL;
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}
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break;
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|
|
|
case SNDCTL_DSP_GETCAPS:
|
|
*arg_i = DSP_CAP_REALTIME | DSP_CAP_MMAP | DSP_CAP_TRIGGER;
|
|
if (rdch && wrch && !(d->flags & SD_F_SIMPLEX))
|
|
*arg_i |= DSP_CAP_DUPLEX;
|
|
break;
|
|
|
|
case SOUND_PCM_READ_BITS:
|
|
*arg_i = ((wrch? wrch->format : rdch->format) & AFMT_16BIT)? 16 : 8;
|
|
break;
|
|
|
|
case SNDCTL_DSP_SETTRIGGER:
|
|
if (rdch) {
|
|
rdch->flags &= ~CHN_F_TRIGGERED;
|
|
if (*arg_i & PCM_ENABLE_INPUT)
|
|
rdch->flags |= CHN_F_TRIGGERED;
|
|
chn_intr(rdch);
|
|
}
|
|
if (wrch) {
|
|
wrch->flags &= ~CHN_F_TRIGGERED;
|
|
if (*arg_i & PCM_ENABLE_OUTPUT)
|
|
wrch->flags |= CHN_F_TRIGGERED;
|
|
chn_intr(wrch);
|
|
}
|
|
break;
|
|
|
|
case SNDCTL_DSP_GETTRIGGER:
|
|
*arg_i = 0;
|
|
if (wrch && wrch->flags & CHN_F_TRIGGERED)
|
|
*arg_i |= PCM_ENABLE_OUTPUT;
|
|
if (rdch && rdch->flags & CHN_F_TRIGGERED)
|
|
*arg_i |= PCM_ENABLE_INPUT;
|
|
break;
|
|
|
|
case SNDCTL_DSP_MAPINBUF:
|
|
case SNDCTL_DSP_MAPOUTBUF:
|
|
case SNDCTL_DSP_SETSYNCRO:
|
|
/* undocumented */
|
|
|
|
case SNDCTL_DSP_POST:
|
|
case SOUND_PCM_WRITE_FILTER:
|
|
case SOUND_PCM_READ_FILTER:
|
|
/* dunno what these do, don't sound important */
|
|
default:
|
|
DEB(printf("default ioctl snd%d fn 0x%08x fail\n", unit, cmd));
|
|
ret = EINVAL;
|
|
break;
|
|
}
|
|
splx(s);
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
dsp_poll(snddev_info *d, int chan, int events, struct proc *p)
|
|
{
|
|
int ret = 0, e;
|
|
pcm_channel *wrch = NULL, *rdch = NULL;
|
|
|
|
getchns(d, chan, &rdch, &wrch);
|
|
e = events & (POLLOUT | POLLWRNORM);
|
|
if (wrch && e) ret |= chn_poll(wrch, e, p);
|
|
e = events & (POLLIN | POLLRDNORM);
|
|
if (rdch && e) ret |= chn_poll(rdch, e, p);
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
dsp_mmap(snddev_info *d, int chan, vm_offset_t offset, int nprot)
|
|
{
|
|
pcm_channel *wrch = NULL, *rdch = NULL, *c = NULL;
|
|
|
|
getchns(d, chan, &rdch, &wrch);
|
|
/* XXX this is broken by line 204 of vm/device_pager.c, so force write buffer */
|
|
if (1 || (wrch && (nprot & PROT_WRITE))) c = wrch;
|
|
else if (rdch && (nprot & PROT_READ)) c = rdch;
|
|
if (c) {
|
|
c->flags |= CHN_F_MAPPED;
|
|
return atop(vtophys(c->buffer.buf + offset));
|
|
}
|
|
return -1;
|
|
}
|
|
|