static int
insert_queue(struct seq_oss_devinfo *dp, union evrec *rec, struct file *opt)
{
int rc = 0;
struct snd_seq_event event;
/* if this is a timing event, process the current time */
if (snd_seq_oss_process_timer_event(dp->timer, rec))
return 0; /* no need to insert queue */
/* parse this event */
memset(&event, 0, sizeof(event));
/* set dummy -- to be sure */
event.type = SNDRV_SEQ_EVENT_NOTEOFF;
snd_seq_oss_fill_addr(dp, &event, dp->addr.port, dp->addr.client);
if (snd_seq_oss_process_event(dp, rec, &event))
return 0; /* invalid event - no need to insert queue */
event.time.tick = snd_seq_oss_timer_cur_tick(dp->timer);
if (dp->timer->realtime || !dp->timer->running) {
snd_seq_oss_dispatch(dp, &event, 0, 0);
} else {
if (is_nonblock_mode(dp->file_mode))
rc = snd_seq_kernel_client_enqueue(dp->cseq, &event, 0, 0);
else
rc = snd_seq_kernel_client_enqueue_blocking(dp->cseq, &event, opt, 0, 0);
}
return rc;
}
/*
* wait until the write buffer has enough room
*/
int
snd_seq_oss_writeq_sync(seq_oss_writeq_t *q)
{
seq_oss_devinfo_t *dp = q->dp;
abstime_t time;
unsigned long flags;
time = snd_seq_oss_timer_cur_tick(dp->timer);
if (q->sync_time >= time)
return 0; /* already finished */
if (! q->sync_event_put) {
snd_seq_event_t ev;
evrec_t *rec;
/* put echoback event */
memset(&ev, 0, sizeof(ev));
ev.flags = 0;
ev.type = SNDRV_SEQ_EVENT_ECHO;
ev.time.tick = time;
/* echo back to itself */
snd_seq_oss_fill_addr(dp, &ev, dp->addr.client, dp->addr.port);
rec = (evrec_t*)&ev.data;
rec->t.code = SEQ_SYNCTIMER;
rec->t.time = time;
q->sync_event_put = 1;
snd_seq_kernel_client_enqueue_blocking(dp->cseq, &ev, NULL, 0, 0);
}
spin_lock_irqsave(&q->sync_lock, flags);
if (! q->sync_event_put) { /* echoback event has been received */
spin_unlock_irqrestore(&q->sync_lock, flags);
return 0;
}
/* wait for echo event */
spin_unlock(&q->sync_lock);
interruptible_sleep_on_timeout(&q->sync_sleep, HZ);
spin_lock(&q->sync_lock);
if (signal_pending(current)) {
/* interrupted - return 0 to finish sync */
q->sync_event_put = 0;
spin_unlock_irqrestore(&q->sync_lock, flags);
return 0;
}
spin_unlock_irqrestore(&q->sync_lock, flags);
if (q->sync_time >= time)
return 0;
else
return 1;
}
/*
* wait until the write buffer has enough room
*/
int
snd_seq_oss_writeq_sync(struct seq_oss_writeq *q)
{
struct seq_oss_devinfo *dp = q->dp;
abstime_t time;
time = snd_seq_oss_timer_cur_tick(dp->timer);
if (q->sync_time >= time)
return 0; /* already finished */
if (! q->sync_event_put) {
struct snd_seq_event ev;
union evrec *rec;
/* put echoback event */
memset(&ev, 0, sizeof(ev));
ev.flags = 0;
ev.type = SNDRV_SEQ_EVENT_ECHO;
ev.time.tick = time;
/* echo back to itself */
snd_seq_oss_fill_addr(dp, &ev, dp->addr.client, dp->addr.port);
rec = (union evrec *)&ev.data;
rec->t.code = SEQ_SYNCTIMER;
rec->t.time = time;
q->sync_event_put = 1;
snd_seq_kernel_client_enqueue_blocking(dp->cseq, &ev, NULL, 0, 0);
}
wait_event_interruptible_timeout(q->sync_sleep, ! q->sync_event_put, HZ);
if (signal_pending(current))
/* interrupted - return 0 to finish sync */
q->sync_event_put = 0;
if (! q->sync_event_put || q->sync_time >= time)
return 0;
return 1;
}
int
snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long carg)
{
int dev, val;
void __user *arg = (void __user *)carg;
int __user *p = arg;
switch (cmd) {
case SNDCTL_TMR_TIMEBASE:
case SNDCTL_TMR_TEMPO:
case SNDCTL_TMR_START:
case SNDCTL_TMR_STOP:
case SNDCTL_TMR_CONTINUE:
case SNDCTL_TMR_METRONOME:
case SNDCTL_TMR_SOURCE:
case SNDCTL_TMR_SELECT:
case SNDCTL_SEQ_CTRLRATE:
return snd_seq_oss_timer_ioctl(dp->timer, cmd, arg);
case SNDCTL_SEQ_PANIC:
debug_printk(("panic\n"));
snd_seq_oss_reset(dp);
return -EINVAL;
case SNDCTL_SEQ_SYNC:
debug_printk(("sync\n"));
if (! is_write_mode(dp->file_mode) || dp->writeq == NULL)
return 0;
while (snd_seq_oss_writeq_sync(dp->writeq))
;
if (signal_pending(current))
return -ERESTARTSYS;
return 0;
case SNDCTL_SEQ_RESET:
debug_printk(("reset\n"));
snd_seq_oss_reset(dp);
return 0;
case SNDCTL_SEQ_TESTMIDI:
debug_printk(("test midi\n"));
if (get_user(dev, p))
return -EFAULT;
return snd_seq_oss_midi_open(dp, dev, dp->file_mode);
case SNDCTL_SEQ_GETINCOUNT:
debug_printk(("get in count\n"));
if (dp->readq == NULL || ! is_read_mode(dp->file_mode))
return 0;
return put_user(dp->readq->qlen, p) ? -EFAULT : 0;
case SNDCTL_SEQ_GETOUTCOUNT:
debug_printk(("get out count\n"));
if (! is_write_mode(dp->file_mode) || dp->writeq == NULL)
return 0;
return put_user(snd_seq_oss_writeq_get_free_size(dp->writeq), p) ? -EFAULT : 0;
case SNDCTL_SEQ_GETTIME:
debug_printk(("get time\n"));
return put_user(snd_seq_oss_timer_cur_tick(dp->timer), p) ? -EFAULT : 0;
case SNDCTL_SEQ_RESETSAMPLES:
debug_printk(("reset samples\n"));
if (get_user(dev, p))
return -EFAULT;
return snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
case SNDCTL_SEQ_NRSYNTHS:
debug_printk(("nr synths\n"));
return put_user(dp->max_synthdev, p) ? -EFAULT : 0;
case SNDCTL_SEQ_NRMIDIS:
debug_printk(("nr midis\n"));
return put_user(dp->max_mididev, p) ? -EFAULT : 0;
case SNDCTL_SYNTH_MEMAVL:
debug_printk(("mem avail\n"));
if (get_user(dev, p))
return -EFAULT;
val = snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
return put_user(val, p) ? -EFAULT : 0;
case SNDCTL_FM_4OP_ENABLE:
debug_printk(("4op\n"));
if (get_user(dev, p))
return -EFAULT;
snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
return 0;
case SNDCTL_SYNTH_INFO:
case SNDCTL_SYNTH_ID:
debug_printk(("synth info\n"));
return snd_seq_oss_synth_info_user(dp, arg);
case SNDCTL_SEQ_OUTOFBAND:
debug_printk(("out of band\n"));
return snd_seq_oss_oob_user(dp, arg);
case SNDCTL_MIDI_INFO:
debug_printk(("midi info\n"));
return snd_seq_oss_midi_info_user(dp, arg);
case SNDCTL_SEQ_THRESHOLD:
debug_printk(("threshold\n"));
if (! is_write_mode(dp->file_mode))
return 0;
if (get_user(val, p))
return -EFAULT;
if (val < 1)
val = 1;
if (val >= dp->writeq->maxlen)
val = dp->writeq->maxlen - 1;
snd_seq_oss_writeq_set_output(dp->writeq, val);
return 0;
case SNDCTL_MIDI_PRETIME:
debug_printk(("pretime\n"));
if (dp->readq == NULL || !is_read_mode(dp->file_mode))
return 0;
if (get_user(val, p))
return -EFAULT;
if (val <= 0)
val = -1;
else
val = (HZ * val) / 10;
dp->readq->pre_event_timeout = val;
return put_user(val, p) ? -EFAULT : 0;
default:
debug_printk(("others\n"));
if (! is_write_mode(dp->file_mode))
return -EIO;
return snd_seq_oss_synth_ioctl(dp, 0, cmd, carg);
}
return 0;
}
