--- /dev/null
+/*
+ * OSS compatible sequencer driver
+ *
+ * OSS compatible i/o control
+ *
+ * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "seq_oss_device.h"
+#include "seq_oss_readq.h"
+#include "seq_oss_writeq.h"
+#include "seq_oss_timer.h"
+#include "seq_oss_synth.h"
+#include "seq_oss_midi.h"
+#include "seq_oss_event.h"
+
+static int snd_seq_oss_synth_info_user(struct seq_oss_devinfo *dp, void __user *arg)
+{
+ struct synth_info info;
+
+ if (copy_from_user(&info, arg, sizeof(info)))
+ return -EFAULT;
+ if (snd_seq_oss_synth_make_info(dp, info.device, &info) < 0)
+ return -EINVAL;
+ if (copy_to_user(arg, &info, sizeof(info)))
+ return -EFAULT;
+ return 0;
+}
+
+static int snd_seq_oss_midi_info_user(struct seq_oss_devinfo *dp, void __user *arg)
+{
+ struct midi_info info;
+
+ if (copy_from_user(&info, arg, sizeof(info)))
+ return -EFAULT;
+ if (snd_seq_oss_midi_make_info(dp, info.device, &info) < 0)
+ return -EINVAL;
+ if (copy_to_user(arg, &info, sizeof(info)))
+ return -EFAULT;
+ return 0;
+}
+
+static int snd_seq_oss_oob_user(struct seq_oss_devinfo *dp, void __user *arg)
+{
+ unsigned char ev[8];
+ struct snd_seq_event tmpev;
+
+ if (copy_from_user(ev, arg, 8))
+ return -EFAULT;
+ memset(&tmpev, 0, sizeof(tmpev));
+ snd_seq_oss_fill_addr(dp, &tmpev, dp->addr.port, dp->addr.client);
+ tmpev.time.tick = 0;
+ if (! snd_seq_oss_process_event(dp, (union evrec *)ev, &tmpev)) {
+ snd_seq_oss_dispatch(dp, &tmpev, 0, 0);
+ }
+ return 0;
+}
+
+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:
+ snd_seq_oss_reset(dp);
+ return -EINVAL;
+
+ case SNDCTL_SEQ_SYNC:
+ 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:
+ snd_seq_oss_reset(dp);
+ return 0;
+
+ case SNDCTL_SEQ_TESTMIDI:
+ if (get_user(dev, p))
+ return -EFAULT;
+ return snd_seq_oss_midi_open(dp, dev, dp->file_mode);
+
+ case SNDCTL_SEQ_GETINCOUNT:
+ 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:
+ 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:
+ return put_user(snd_seq_oss_timer_cur_tick(dp->timer), p) ? -EFAULT : 0;
+
+ case SNDCTL_SEQ_RESETSAMPLES:
+ if (get_user(dev, p))
+ return -EFAULT;
+ return snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
+
+ case SNDCTL_SEQ_NRSYNTHS:
+ return put_user(dp->max_synthdev, p) ? -EFAULT : 0;
+
+ case SNDCTL_SEQ_NRMIDIS:
+ return put_user(dp->max_mididev, p) ? -EFAULT : 0;
+
+ case SNDCTL_SYNTH_MEMAVL:
+ 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:
+ 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:
+ return snd_seq_oss_synth_info_user(dp, arg);
+
+ case SNDCTL_SEQ_OUTOFBAND:
+ return snd_seq_oss_oob_user(dp, arg);
+
+ case SNDCTL_MIDI_INFO:
+ return snd_seq_oss_midi_info_user(dp, arg);
+
+ case SNDCTL_SEQ_THRESHOLD:
+ 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:
+ 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:
+ if (! is_write_mode(dp->file_mode))
+ return -EIO;
+ return snd_seq_oss_synth_ioctl(dp, 0, cmd, carg);
+ }
+ return 0;
+}
+
Code Review / kvmfornfv.git / blobdiff