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 static int snd_seq_oss_synth_info_user(struct seq_oss_devinfo *dp, void __user *arg) 32 { 33 struct synth_info info; 34 35 if (copy_from_user(&info, arg, sizeof(info))) 36 return -EFAULT; 37 if (snd_seq_oss_synth_make_info(dp, info.device, &info) < 0) 38 return -EINVAL; 39 if (copy_to_user(arg, &info, sizeof(info))) 40 return -EFAULT; 41 return 0; 42 } 43 44 static int snd_seq_oss_midi_info_user(struct seq_oss_devinfo *dp, void __user *arg) 45 { 46 struct midi_info info; 47 48 if (copy_from_user(&info, arg, sizeof(info))) 49 return -EFAULT; 50 if (snd_seq_oss_midi_make_info(dp, info.device, &info) < 0) 51 return -EINVAL; 52 if (copy_to_user(arg, &info, sizeof(info))) 53 return -EFAULT; 54 return 0; 55 } 56 57 static int snd_seq_oss_oob_user(struct seq_oss_devinfo *dp, void __user *arg) 58 { 59 unsigned char ev[8]; 60 struct snd_seq_event tmpev; 61 62 if (copy_from_user(ev, arg, 8)) 63 return -EFAULT; 64 memset(&tmpev, 0, sizeof(tmpev)); 65 snd_seq_oss_fill_addr(dp, &tmpev, dp->addr.port, dp->addr.client); 66 tmpev.time.tick = 0; 67 if (! snd_seq_oss_process_event(dp, (union evrec *)ev, &tmpev)) { 68 snd_seq_oss_dispatch(dp, &tmpev, 0, 0); 69 } 70 return 0; 71 } 72 73 int 74 snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long carg) 75 { 76 int dev, val; 77 void __user *arg = (void __user *)carg; 78 int __user *p = arg; 79 80 switch (cmd) { 81 case SNDCTL_TMR_TIMEBASE: 82 case SNDCTL_TMR_TEMPO: 83 case SNDCTL_TMR_START: 84 case SNDCTL_TMR_STOP: 85 case SNDCTL_TMR_CONTINUE: 86 case SNDCTL_TMR_METRONOME: 87 case SNDCTL_TMR_SOURCE: 88 case SNDCTL_TMR_SELECT: 89 case SNDCTL_SEQ_CTRLRATE: 90 return snd_seq_oss_timer_ioctl(dp->timer, cmd, arg); 91 92 case SNDCTL_SEQ_PANIC: 93 snd_seq_oss_reset(dp); 94 return -EINVAL; 95 96 case SNDCTL_SEQ_SYNC: 97 if (! is_write_mode(dp->file_mode) || dp->writeq == NULL) 98 return 0; 99 while (snd_seq_oss_writeq_sync(dp->writeq)) 100 ; 101 if (signal_pending(current)) 102 return -ERESTARTSYS; 103 return 0; 104 105 case SNDCTL_SEQ_RESET: 106 snd_seq_oss_reset(dp); 107 return 0; 108 109 case SNDCTL_SEQ_TESTMIDI: 110 if (get_user(dev, p)) 111 return -EFAULT; 112 return snd_seq_oss_midi_open(dp, dev, dp->file_mode); 113 114 case SNDCTL_SEQ_GETINCOUNT: 115 if (dp->readq == NULL || ! is_read_mode(dp->file_mode)) 116 return 0; 117 return put_user(dp->readq->qlen, p) ? -EFAULT : 0; 118 119 case SNDCTL_SEQ_GETOUTCOUNT: 120 if (! is_write_mode(dp->file_mode) || dp->writeq == NULL) 121 return 0; 122 return put_user(snd_seq_oss_writeq_get_free_size(dp->writeq), p) ? -EFAULT : 0; 123 124 case SNDCTL_SEQ_GETTIME: 125 return put_user(snd_seq_oss_timer_cur_tick(dp->timer), p) ? -EFAULT : 0; 126 127 case SNDCTL_SEQ_RESETSAMPLES: 128 if (get_user(dev, p)) 129 return -EFAULT; 130 return snd_seq_oss_synth_ioctl(dp, dev, cmd, carg); 131 132 case SNDCTL_SEQ_NRSYNTHS: 133 return put_user(dp->max_synthdev, p) ? -EFAULT : 0; 134 135 case SNDCTL_SEQ_NRMIDIS: 136 return put_user(dp->max_mididev, p) ? -EFAULT : 0; 137 138 case SNDCTL_SYNTH_MEMAVL: 139 if (get_user(dev, p)) 140 return -EFAULT; 141 val = snd_seq_oss_synth_ioctl(dp, dev, cmd, carg); 142 return put_user(val, p) ? -EFAULT : 0; 143 144 case SNDCTL_FM_4OP_ENABLE: 145 if (get_user(dev, p)) 146 return -EFAULT; 147 snd_seq_oss_synth_ioctl(dp, dev, cmd, carg); 148 return 0; 149 150 case SNDCTL_SYNTH_INFO: 151 case SNDCTL_SYNTH_ID: 152 return snd_seq_oss_synth_info_user(dp, arg); 153 154 case SNDCTL_SEQ_OUTOFBAND: 155 return snd_seq_oss_oob_user(dp, arg); 156 157 case SNDCTL_MIDI_INFO: 158 return snd_seq_oss_midi_info_user(dp, arg); 159 160 case SNDCTL_SEQ_THRESHOLD: 161 if (! is_write_mode(dp->file_mode)) 162 return 0; 163 if (get_user(val, p)) 164 return -EFAULT; 165 if (val < 1) 166 val = 1; 167 if (val >= dp->writeq->maxlen) 168 val = dp->writeq->maxlen - 1; 169 snd_seq_oss_writeq_set_output(dp->writeq, val); 170 return 0; 171 172 case SNDCTL_MIDI_PRETIME: 173 if (dp->readq == NULL || !is_read_mode(dp->file_mode)) 174 return 0; 175 if (get_user(val, p)) 176 return -EFAULT; 177 if (val <= 0) 178 val = -1; 179 else 180 val = (HZ * val) / 10; 181 dp->readq->pre_event_timeout = val; 182 return put_user(val, p) ? -EFAULT : 0; 183 184 default: 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 } 191 192