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         int __user *p = arg;
  40         snd_seq_event_t tmpev;
  41
  42         switch (cmd) {
  43         case SNDCTL_TMR_TIMEBASE:
  44         case SNDCTL_TMR_TEMPO:
  45         case SNDCTL_TMR_START:
  46         case SNDCTL_TMR_STOP:
  47         case SNDCTL_TMR_CONTINUE:
  48         case SNDCTL_TMR_METRONOME:
  49         case SNDCTL_TMR_SOURCE:
  50         case SNDCTL_TMR_SELECT:
  51         case SNDCTL_SEQ_CTRLRATE:
  52                 return snd_seq_oss_timer_ioctl(dp->timer, cmd, arg);
  53
  54         case SNDCTL_SEQ_PANIC:
  55                 debug_printk(("panic\n"));
  56                 snd_seq_oss_reset(dp);
  57                 return -EINVAL;
  58
  59         case SNDCTL_SEQ_SYNC:
  60                 debug_printk(("sync\n"));
  61                 if (! is_write_mode(dp->file_mode) || dp->writeq == NULL)
  62                         return 0;
  63                 while (snd_seq_oss_writeq_sync(dp->writeq))
  64                         ;
  65                 if (signal_pending(current))
  66                         return -ERESTARTSYS;
  67                 return 0;
  68
  69         case SNDCTL_SEQ_RESET:
  70                 debug_printk(("reset\n"));
  71                 snd_seq_oss_reset(dp);
  72                 return 0;
  73
  74         case SNDCTL_SEQ_TESTMIDI:
  75                 debug_printk(("test midi\n"));
  76                 if (get_user(dev, p))
  77                         return -EFAULT;
  78                 return snd_seq_oss_midi_open(dp, dev, dp->file_mode);
  79
  80         case SNDCTL_SEQ_GETINCOUNT:
  81                 debug_printk(("get in count\n"));
  82                 if (dp->readq == NULL || ! is_read_mode(dp->file_mode))
  83                         return 0;
  84                 return put_user(dp->readq->qlen, p) ? -EFAULT : 0;
  85
  86         case SNDCTL_SEQ_GETOUTCOUNT:
  87                 debug_printk(("get out count\n"));
  88                 if (! is_write_mode(dp->file_mode) || dp->writeq == NULL)
  89                         return 0;
  90                 return put_user(snd_seq_oss_writeq_get_free_size(dp->writeq), p) ? -EFAULT : 0;
  91
  92         case SNDCTL_SEQ_GETTIME:
  93                 debug_printk(("get time\n"));
  94                 return put_user(snd_seq_oss_timer_cur_tick(dp->timer), p) ? -EFAULT : 0;
  95
  96         case SNDCTL_SEQ_RESETSAMPLES:
  97                 debug_printk(("reset samples\n"));
  98                 if (get_user(dev, p))
  99                         return -EFAULT;
 100                 return snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
 101
 102         case SNDCTL_SEQ_NRSYNTHS:
 103                 debug_printk(("nr synths\n"));
 104                 return put_user(dp->max_synthdev, p) ? -EFAULT : 0;
 105
 106         case SNDCTL_SEQ_NRMIDIS:
 107                 debug_printk(("nr midis\n"));
 108                 return put_user(dp->max_mididev, p) ? -EFAULT : 0;
 109
 110         case SNDCTL_SYNTH_MEMAVL:
 111                 debug_printk(("mem avail\n"));
 112                 if (get_user(dev, p))
 113                         return -EFAULT;
 114                 val = snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
 115                 return put_user(val, p) ? -EFAULT : 0;
 116
 117         case SNDCTL_FM_4OP_ENABLE:
 118                 debug_printk(("4op\n"));
 119                 if (get_user(dev, p))
 120                         return -EFAULT;
 121                 snd_seq_oss_synth_ioctl(dp, dev, cmd, carg);
 122                 return 0;
 123
 124         case SNDCTL_SYNTH_INFO:
 125         case SNDCTL_SYNTH_ID:
 126                 debug_printk(("synth info\n"));
 127                 if (copy_from_user(&inf, arg, sizeof(inf)))
 128                         return -EFAULT;
 129                 if (snd_seq_oss_synth_make_info(dp, inf.device, &inf) < 0)
 130                         return -EINVAL;
 131                 if (copy_to_user(arg, &inf, sizeof(inf)))
 132                         return -EFAULT;
 133                 return 0;
 134
 135         case SNDCTL_SEQ_OUTOFBAND:
 136                 debug_printk(("out of bound\n"));
 137                 if (copy_from_user(ev, arg, 8))
 138                         return -EFAULT;
 139                 memset(&tmpev, 0, sizeof(tmpev));
 140                 snd_seq_oss_fill_addr(dp, &tmpev, dp->addr.port, dp->addr.client);
 141                 tmpev.time.tick = 0;
 142                 if (! snd_seq_oss_process_event(dp, (evrec_t*)ev, &tmpev)) {
 143                         snd_seq_oss_dispatch(dp, &tmpev, 0, 0);
 144                 }
 145                 return 0;
 146
 147         case SNDCTL_MIDI_INFO:
 148                 debug_printk(("midi info\n"));
 149                 if (copy_from_user(&minf, arg, sizeof(minf)))
 150                         return -EFAULT;
 151                 if (snd_seq_oss_midi_make_info(dp, minf.device, &minf) < 0)
 152                         return -EINVAL;
 153                 if (copy_to_user(arg, &minf, sizeof(minf)))
 154                         return -EFAULT;
 155                 return 0;
 156
 157         case SNDCTL_SEQ_THRESHOLD:
 158                 debug_printk(("threshold\n"));
 159                 if (! is_write_mode(dp->file_mode))
 160                         return 0;
 161                 if (get_user(val, p))
 162                         return -EFAULT;
 163                 if (val < 1)
 164                         val = 1;
 165                 if (val >= dp->writeq->maxlen)
 166                         val = dp->writeq->maxlen - 1;
 167                 snd_seq_oss_writeq_set_output(dp->writeq, val);
 168                 return 0;
 169
 170         case SNDCTL_MIDI_PRETIME:
 171                 debug_printk(("pretime\n"));
 172                 if (dp->readq == NULL || !is_read_mode(dp->file_mode))
 173                         return 0;
 174                 if (get_user(val, p))
 175                         return -EFAULT;
 176                 if (val <= 0)
 177                         val = -1;
 178                 else
 179                         val = (HZ * val) / 10;
 180                 dp->readq->pre_event_timeout = val;
 181                 return put_user(val, p) ? -EFAULT : 0;
 182
 183         default:
 184                 debug_printk(("others\n"));
 185                 if (! is_write_mode(dp->file_mode))
 186                         return -EIO;
 187                 return snd_seq_oss_synth_ioctl(dp, 0, cmd, carg);
 188         }
 189         return 0;
 190 }
 191