Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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(seq_oss_devinfo_t *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(seq_oss_devinfo_t *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(seq_oss_devinfo_t *dp, void __user *arg) |
| 58 | { |
| 59 | unsigned char ev[8]; |
| 60 | snd_seq_event_t 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, (evrec_t*)ev, &tmpev)) { |
| 68 | snd_seq_oss_dispatch(dp, &tmpev, 0, 0); |
| 69 | } |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | int |
| 74 | snd_seq_oss_ioctl(seq_oss_devinfo_t *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 | debug_printk(("panic\n")); |
| 94 | snd_seq_oss_reset(dp); |
| 95 | return -EINVAL; |
| 96 | |
| 97 | case SNDCTL_SEQ_SYNC: |
| 98 | debug_printk(("sync\n")); |
| 99 | if (! is_write_mode(dp->file_mode) || dp->writeq == NULL) |
| 100 | return 0; |
| 101 | while (snd_seq_oss_writeq_sync(dp->writeq)) |
| 102 | ; |
| 103 | if (signal_pending(current)) |
| 104 | return -ERESTARTSYS; |
| 105 | return 0; |
| 106 | |
| 107 | case SNDCTL_SEQ_RESET: |
| 108 | debug_printk(("reset\n")); |
| 109 | snd_seq_oss_reset(dp); |
| 110 | return 0; |
| 111 | |
| 112 | case SNDCTL_SEQ_TESTMIDI: |
| 113 | debug_printk(("test midi\n")); |
| 114 | if (get_user(dev, p)) |
| 115 | return -EFAULT; |
| 116 | return snd_seq_oss_midi_open(dp, dev, dp->file_mode); |
| 117 | |
| 118 | case SNDCTL_SEQ_GETINCOUNT: |
| 119 | debug_printk(("get in count\n")); |
| 120 | if (dp->readq == NULL || ! is_read_mode(dp->file_mode)) |
| 121 | return 0; |
| 122 | return put_user(dp->readq->qlen, p) ? -EFAULT : 0; |
| 123 | |
| 124 | case SNDCTL_SEQ_GETOUTCOUNT: |
| 125 | debug_printk(("get out count\n")); |
| 126 | if (! is_write_mode(dp->file_mode) || dp->writeq == NULL) |
| 127 | return 0; |
| 128 | return put_user(snd_seq_oss_writeq_get_free_size(dp->writeq), p) ? -EFAULT : 0; |
| 129 | |
| 130 | case SNDCTL_SEQ_GETTIME: |
| 131 | debug_printk(("get time\n")); |
| 132 | return put_user(snd_seq_oss_timer_cur_tick(dp->timer), p) ? -EFAULT : 0; |
| 133 | |
| 134 | case SNDCTL_SEQ_RESETSAMPLES: |
| 135 | debug_printk(("reset samples\n")); |
| 136 | if (get_user(dev, p)) |
| 137 | return -EFAULT; |
| 138 | return snd_seq_oss_synth_ioctl(dp, dev, cmd, carg); |
| 139 | |
| 140 | case SNDCTL_SEQ_NRSYNTHS: |
| 141 | debug_printk(("nr synths\n")); |
| 142 | return put_user(dp->max_synthdev, p) ? -EFAULT : 0; |
| 143 | |
| 144 | case SNDCTL_SEQ_NRMIDIS: |
| 145 | debug_printk(("nr midis\n")); |
| 146 | return put_user(dp->max_mididev, p) ? -EFAULT : 0; |
| 147 | |
| 148 | case SNDCTL_SYNTH_MEMAVL: |
| 149 | debug_printk(("mem avail\n")); |
| 150 | if (get_user(dev, p)) |
| 151 | return -EFAULT; |
| 152 | val = snd_seq_oss_synth_ioctl(dp, dev, cmd, carg); |
| 153 | return put_user(val, p) ? -EFAULT : 0; |
| 154 | |
| 155 | case SNDCTL_FM_4OP_ENABLE: |
| 156 | debug_printk(("4op\n")); |
| 157 | if (get_user(dev, p)) |
| 158 | return -EFAULT; |
| 159 | snd_seq_oss_synth_ioctl(dp, dev, cmd, carg); |
| 160 | return 0; |
| 161 | |
| 162 | case SNDCTL_SYNTH_INFO: |
| 163 | case SNDCTL_SYNTH_ID: |
| 164 | debug_printk(("synth info\n")); |
| 165 | return snd_seq_oss_synth_info_user(dp, arg); |
| 166 | |
| 167 | case SNDCTL_SEQ_OUTOFBAND: |
| 168 | debug_printk(("out of band\n")); |
| 169 | return snd_seq_oss_oob_user(dp, arg); |
| 170 | |
| 171 | case SNDCTL_MIDI_INFO: |
| 172 | debug_printk(("midi info\n")); |
| 173 | return snd_seq_oss_midi_info_user(dp, arg); |
| 174 | |
| 175 | case SNDCTL_SEQ_THRESHOLD: |
| 176 | debug_printk(("threshold\n")); |
| 177 | if (! is_write_mode(dp->file_mode)) |
| 178 | return 0; |
| 179 | if (get_user(val, p)) |
| 180 | return -EFAULT; |
| 181 | if (val < 1) |
| 182 | val = 1; |
| 183 | if (val >= dp->writeq->maxlen) |
| 184 | val = dp->writeq->maxlen - 1; |
| 185 | snd_seq_oss_writeq_set_output(dp->writeq, val); |
| 186 | return 0; |
| 187 | |
| 188 | case SNDCTL_MIDI_PRETIME: |
| 189 | debug_printk(("pretime\n")); |
| 190 | if (dp->readq == NULL || !is_read_mode(dp->file_mode)) |
| 191 | return 0; |
| 192 | if (get_user(val, p)) |
| 193 | return -EFAULT; |
| 194 | if (val <= 0) |
| 195 | val = -1; |
| 196 | else |
| 197 | val = (HZ * val) / 10; |
| 198 | dp->readq->pre_event_timeout = val; |
| 199 | return put_user(val, p) ? -EFAULT : 0; |
| 200 | |
| 201 | default: |
| 202 | debug_printk(("others\n")); |
| 203 | if (! is_write_mode(dp->file_mode)) |
| 204 | return -EIO; |
| 205 | return snd_seq_oss_synth_ioctl(dp, 0, cmd, carg); |
| 206 | } |
| 207 | return 0; |
| 208 | } |
| 209 | |