sound/core/seq/oss/seq_oss_ioctl.c

   1 /*
   2  * OSS compatible sequencer driver
   3  *
   4  * OSS compatible i/o control
   5  *
   6  * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  */
  22
  23 #include "seq_oss_device.h"
  24 #include "seq_oss_readq.h"
  25 #include "seq_oss_writeq.h"
  26 #include "seq_oss_timer.h"
  27 #include "seq_oss_synth.h"
  28 #include "seq_oss_midi.h"
  29 #include "seq_oss_event.h"
  30
  31 int
  32 snd_seq_oss_ioctl(seq_oss_devinfo_t *dp, unsigned int cmd, unsigned long carg)
  33 {
  34         int dev, val;
  35         struct synth_info inf;
  36         struct midi_info minf;
  37         unsigned char ev[8];
  38         void __user *arg = (void __user *)carg;
  39         snd_seq_event_t tmpev;
  40
  41         switch (cmd) {
  42         case SNDCTL_TMR_TIMEBASE:
  43         case SNDCTL_TMR_TEMPO:
  44         case SNDCTL_TMR_START:
  45         case SNDCTL_TMR_STOP:
  46         case SNDCTL_TMR_CONTINUE:
  47         case SNDCTL_TMR_METRONOME:
  48         case SNDCTL_TMR_SOURCE:
  49         case SNDCTL_TMR_SELECT:
  50         case SNDCTL_SEQ_CTRLRATE:
  51                 return snd_seq_oss_timer_ioctl(dp->timer, cmd, arg);
  52
  53         case SNDCTL_SEQ_PANIC:
  54                 debug_printk(("panic\n"));
  55                 snd_seq_oss_reset(dp);
  56                 return -EINVAL;
  57
  58         case SNDCTL_SEQ_SYNC:
  59                 debug_printk(("sync\n"));
  60                 if (! is_write_mode(dp->file_mode) || dp->writeq == NULL)
  61                         return 0;
  62                 while (snd_seq_oss_writeq_sync(dp->writeq))
  63                         ;
  64                 if (signal_pending(current))
  65                         return -ERESTARTSYS;
  66                 return 0;
  67
  68         case SNDCTL_SEQ_RESET:
  69                 debug_printk(("reset\n"));
  70                 snd_seq_oss_reset(dp);
  71                 return 0;
  72
  73         case SNDCTL_SEQ_TESTMIDI:
  74                 debug_printk(("test midi\n"));
  75                 if (get_user(dev, (int *)arg))
  76                         return -EFAULT;
  77                 return snd_seq_oss_midi_open(dp, dev, dp->file_mode);
  78
  79         case SNDCTL_SEQ_GETINCOUNT:
  80                 debug_printk(("get in count\n"));
  81                 if (dp->readq == NULL || ! is_read_mode(dp->file_mode))
  82                         return 0;
  83                 return put_user(dp->readq->qlen, (int *)arg) ? -EFAULT : 0;
  84
  85         case SNDCTL_SEQ_GETOUTCOUNT:
  86                 debug_printk(("get out count\n"));
  87                 if (! is_write_mode(dp->file_mode) || dp->writeq == NULL)
  88                         return 0;
  89                 return put_user(snd_seq_oss_writeq_get_free_size(dp->writeq), (int *)arg) ? -EFAULT : 0;
  90
  91         case SNDCTL_SEQ_GETTIME:
  92                 debug_printk(("get time\n"));
  93                 return put_user(snd_seq_oss_timer_cur_tick(dp->timer), (int *)arg) ? -EFAULT : 0;
  94
  95         case SNDCTL_SEQ_RESETSAMPLES:
  96                 debug_printk(("reset samples\n"));
  97                 if (get_user(dev, (int *)arg))
  98                         return -EFAULT;
  99                 return snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
 100
 101         case SNDCTL_SEQ_NRSYNTHS:
 102                 debug_printk(("nr synths\n"));
 103                 return put_user(dp->max_synthdev, (int *)arg) ? -EFAULT : 0;
 104
 105         case SNDCTL_SEQ_NRMIDIS:
 106                 debug_printk(("nr midis\n"));
 107                 return put_user(dp->max_mididev, (int *)arg) ? -EFAULT : 0;
 108
 109         case SNDCTL_SYNTH_MEMAVL:
 110                 debug_printk(("mem avail\n"));
 111                 if (get_user(dev, (int *)arg))
 112                         return -EFAULT;
 113                 val = snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
 114                 return put_user(val, (int *)arg) ? -EFAULT : 0;
 115
 116         case SNDCTL_FM_4OP_ENABLE:
 117                 debug_printk(("4op\n"));
 118                 if (get_user(dev, (int *)arg))
 119                         return -EFAULT;
 120                 snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
 121                 return 0;
 122
 123         case SNDCTL_SYNTH_INFO:
 124         case SNDCTL_SYNTH_ID:
 125                 debug_printk(("synth info\n"));
 126                 if (copy_from_user(&inf, arg, sizeof(inf)))
 127                         return -EFAULT;
 128                 if (snd_seq_oss_synth_make_info(dp, inf.device, &inf) < 0)
 129                         return -EINVAL;
 130                 if (copy_to_user(arg, &inf, sizeof(inf)))
 131                         return -EFAULT;
 132                 return 0;
 133
 134         case SNDCTL_SEQ_OUTOFBAND:
 135                 debug_printk(("out of bound\n"));
 136                 if (copy_from_user(ev, arg, 8))
 137                         return -EFAULT;
 138                 memset(&tmpev, 0, sizeof(tmpev));
 139                 snd_seq_oss_fill_addr(dp, &tmpev, dp->addr.port, dp->addr.client);
 140                 tmpev.time.tick = 0;
 141                 if (! snd_seq_oss_process_event(dp, (evrec_t*)ev, &tmpev)) {
 142                         snd_seq_oss_dispatch(dp, &tmpev, 0, 0);
 143                 }
 144                 return 0;
 145
 146         case SNDCTL_MIDI_INFO:
 147                 debug_printk(("midi info\n"));
 148                 if (copy_from_user(&minf, arg, sizeof(minf)))
 149                         return -EFAULT;
 150                 if (snd_seq_oss_midi_make_info(dp, minf.device, &minf) < 0)
 151                         return -EINVAL;
 152                 if (copy_to_user(arg, &minf, sizeof(minf)))
 153                         return -EFAULT;
 154                 return 0;
 155
 156         case SNDCTL_SEQ_THRESHOLD:
 157                 debug_printk(("threshold\n"));
 158                 if (! is_write_mode(dp->file_mode))
 159                         return 0;
 160                 if (get_user(val, (int *)arg))
 161                         return -EFAULT;
 162                 if (val < 1)
 163                         val = 1;
 164                 if (val >= dp->writeq->maxlen)
 165                         val = dp->writeq->maxlen - 1;
 166                 snd_seq_oss_writeq_set_output(dp->writeq, val);
 167                 return 0;
 168
 169         case SNDCTL_MIDI_PRETIME:
 170                 debug_printk(("pretime\n"));
 171                 if (dp->readq == NULL || !is_read_mode(dp->file_mode))
 172                         return 0;
 173                 if (get_user(val, (int *)arg))
 174                         return -EFAULT;
 175                 if (val <= 0)
 176                         val = -1;
 177                 else
 178                         val = (HZ * val) / 10;
 179                 dp->readq->pre_event_timeout = val;
 180                 return put_user(val, (int *)arg) ? -EFAULT : 0;
 181
 182         default:
 183                 debug_printk(("others\n"));
 184                 if (! is_write_mode(dp->file_mode))
 185                         return -EIO;
 186                 return snd_seq_oss_synth_ioctl(dp, 0, cmd, carg);
 187         }
 188         return 0;
 189 }
 190