1/* 2 * Interface for OSS sequencer emulation 3 * 4 * Copyright (C) 2000 Uros Bizjak <uros@kss-loka.si> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21#include "opl3_voice.h" 22#include <linux/slab.h> 23 24static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure); 25static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg); 26static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg); 27static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, const char __user *buf, int offs, int count); 28static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg); 29 30/* */ 31 32static inline mm_segment_t snd_enter_user(void) 33{ 34 mm_segment_t fs = get_fs(); 35 set_fs(get_ds()); 36 return fs; 37} 38 39static inline void snd_leave_user(mm_segment_t fs) 40{ 41 set_fs(fs); 42} 43 44/* operators */ 45 46extern struct snd_midi_op opl3_ops; 47 48static struct snd_seq_oss_callback oss_callback = { 49 .owner = THIS_MODULE, 50 .open = snd_opl3_open_seq_oss, 51 .close = snd_opl3_close_seq_oss, 52 .ioctl = snd_opl3_ioctl_seq_oss, 53 .load_patch = snd_opl3_load_patch_seq_oss, 54 .reset = snd_opl3_reset_seq_oss, 55}; 56 57static int snd_opl3_oss_event_input(struct snd_seq_event *ev, int direct, 58 void *private_data, int atomic, int hop) 59{ 60 struct snd_opl3 *opl3 = private_data; 61 62 if (ev->type != SNDRV_SEQ_EVENT_OSS) 63 snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset); 64 return 0; 65} 66 67/* ------------------------------ */ 68 69static void snd_opl3_oss_free_port(void *private_data) 70{ 71 struct snd_opl3 *opl3 = private_data; 72 73 snd_midi_channel_free_set(opl3->oss_chset); 74} 75 76static int snd_opl3_oss_create_port(struct snd_opl3 * opl3) 77{ 78 struct snd_seq_port_callback callbacks; 79 char name[32]; 80 int voices, opl_ver; 81 82 voices = (opl3->hardware < OPL3_HW_OPL3) ? 83 MAX_OPL2_VOICES : MAX_OPL3_VOICES; 84 opl3->oss_chset = snd_midi_channel_alloc_set(voices); 85 if (opl3->oss_chset == NULL) 86 return -ENOMEM; 87 opl3->oss_chset->private_data = opl3; 88 89 memset(&callbacks, 0, sizeof(callbacks)); 90 callbacks.owner = THIS_MODULE; 91 callbacks.event_input = snd_opl3_oss_event_input; 92 callbacks.private_free = snd_opl3_oss_free_port; 93 callbacks.private_data = opl3; 94 95 opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8; 96 sprintf(name, "OPL%i OSS Port", opl_ver); 97 98 opl3->oss_chset->client = opl3->seq_client; 99 opl3->oss_chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks, 100 SNDRV_SEQ_PORT_CAP_WRITE, 101 SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | 102 SNDRV_SEQ_PORT_TYPE_MIDI_GM | 103 SNDRV_SEQ_PORT_TYPE_HARDWARE | 104 SNDRV_SEQ_PORT_TYPE_SYNTHESIZER, 105 voices, voices, 106 name); 107 if (opl3->oss_chset->port < 0) { 108 int port; 109 port = opl3->oss_chset->port; 110 snd_midi_channel_free_set(opl3->oss_chset); 111 return port; 112 } 113 return 0; 114} 115 116/* ------------------------------ */ 117 118/* register OSS synth */ 119void snd_opl3_init_seq_oss(struct snd_opl3 *opl3, char *name) 120{ 121 struct snd_seq_oss_reg *arg; 122 struct snd_seq_device *dev; 123 124 if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS, 125 sizeof(struct snd_seq_oss_reg), &dev) < 0) 126 return; 127 128 opl3->oss_seq_dev = dev; 129 strlcpy(dev->name, name, sizeof(dev->name)); 130 arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); 131 arg->type = SYNTH_TYPE_FM; 132 if (opl3->hardware < OPL3_HW_OPL3) { 133 arg->subtype = FM_TYPE_ADLIB; 134 arg->nvoices = MAX_OPL2_VOICES; 135 } else { 136 arg->subtype = FM_TYPE_OPL3; 137 arg->nvoices = MAX_OPL3_VOICES; 138 } 139 arg->oper = oss_callback; 140 arg->private_data = opl3; 141 142 if (snd_opl3_oss_create_port(opl3)) { 143 /* register to OSS synth table */ 144 snd_device_register(opl3->card, dev); 145 } 146} 147 148/* unregister */ 149void snd_opl3_free_seq_oss(struct snd_opl3 *opl3) 150{ 151 if (opl3->oss_seq_dev) { 152 /* The instance should have been released in prior */ 153 opl3->oss_seq_dev = NULL; 154 } 155} 156 157/* ------------------------------ */ 158 159/* open OSS sequencer */ 160static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure) 161{ 162 struct snd_opl3 *opl3 = closure; 163 int err; 164 165 snd_assert(arg != NULL, return -ENXIO); 166 167 if ((err = snd_opl3_synth_setup(opl3)) < 0) 168 return err; 169 170 /* fill the argument data */ 171 arg->private_data = opl3; 172 arg->addr.client = opl3->oss_chset->client; 173 arg->addr.port = opl3->oss_chset->port; 174 175 if ((err = snd_opl3_synth_use_inc(opl3)) < 0) 176 return err; 177 178 opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH; 179 return 0; 180} 181 182/* close OSS sequencer */ 183static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg) 184{ 185 struct snd_opl3 *opl3; 186 187 snd_assert(arg != NULL, return -ENXIO); 188 opl3 = arg->private_data; 189 190 snd_opl3_synth_cleanup(opl3); 191 192 snd_opl3_synth_use_dec(opl3); 193 return 0; 194} 195 196/* load patch */ 197 198/* offsets for SBI params */ 199#define AM_VIB 0 200#define KSL_LEVEL 2 201#define ATTACK_DECAY 4 202#define SUSTAIN_RELEASE 6 203#define WAVE_SELECT 8 204 205/* offset for SBI instrument */ 206#define CONNECTION 10 207#define OFFSET_4OP 11 208 209/* from sound_config.h */ 210#define SBFM_MAXINSTR 256 211 212static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, 213 const char __user *buf, int offs, int count) 214{ 215 struct snd_opl3 *opl3; 216 int err = -EINVAL; 217 218 snd_assert(arg != NULL, return -ENXIO); 219 opl3 = arg->private_data; 220 221 if ((format == FM_PATCH) || (format == OPL3_PATCH)) { 222 struct sbi_instrument sbi; 223 224 size_t size; 225 struct snd_seq_instr_header *put; 226 struct snd_seq_instr_data *data; 227 struct fm_xinstrument *xinstr; 228 229 struct snd_seq_event ev; 230 int i; 231 232 mm_segment_t fs; 233 234 if (count < (int)sizeof(sbi)) { 235 snd_printk("FM Error: Patch record too short\n"); 236 return -EINVAL; 237 } 238 if (copy_from_user(&sbi, buf, sizeof(sbi))) 239 return -EFAULT; 240 241 if (sbi.channel < 0 || sbi.channel >= SBFM_MAXINSTR) { 242 snd_printk("FM Error: Invalid instrument number %d\n", sbi.channel); 243 return -EINVAL; 244 } 245 246 size = sizeof(*put) + sizeof(struct fm_xinstrument); 247 put = kzalloc(size, GFP_KERNEL); 248 if (put == NULL) 249 return -ENOMEM; 250 /* build header */ 251 data = &put->data; 252 data->type = SNDRV_SEQ_INSTR_ATYPE_DATA; 253 strcpy(data->data.format, SNDRV_SEQ_INSTR_ID_OPL2_3); 254 /* build data section */ 255 xinstr = (struct fm_xinstrument *)(data + 1); 256 xinstr->stype = FM_STRU_INSTR; 257 258 for (i = 0; i < 2; i++) { 259 xinstr->op[i].am_vib = sbi.operators[AM_VIB + i]; 260 xinstr->op[i].ksl_level = sbi.operators[KSL_LEVEL + i]; 261 xinstr->op[i].attack_decay = sbi.operators[ATTACK_DECAY + i]; 262 xinstr->op[i].sustain_release = sbi.operators[SUSTAIN_RELEASE + i]; 263 xinstr->op[i].wave_select = sbi.operators[WAVE_SELECT + i]; 264 } 265 xinstr->feedback_connection[0] = sbi.operators[CONNECTION]; 266 267 if (format == OPL3_PATCH) { 268 xinstr->type = FM_PATCH_OPL3; 269 for (i = 0; i < 2; i++) { 270 xinstr->op[i+2].am_vib = sbi.operators[OFFSET_4OP + AM_VIB + i]; 271 xinstr->op[i+2].ksl_level = sbi.operators[OFFSET_4OP + KSL_LEVEL + i]; 272 xinstr->op[i+2].attack_decay = sbi.operators[OFFSET_4OP + ATTACK_DECAY + i]; 273 xinstr->op[i+2].sustain_release = sbi.operators[OFFSET_4OP + SUSTAIN_RELEASE + i]; 274 xinstr->op[i+2].wave_select = sbi.operators[OFFSET_4OP + WAVE_SELECT + i]; 275 } 276 xinstr->feedback_connection[1] = sbi.operators[OFFSET_4OP + CONNECTION]; 277 } else { 278 xinstr->type = FM_PATCH_OPL2; 279 } 280 281 put->id.instr.std = SNDRV_SEQ_INSTR_TYPE2_OPL2_3; 282 put->id.instr.bank = 127; 283 put->id.instr.prg = sbi.channel; 284 put->cmd = SNDRV_SEQ_INSTR_PUT_CMD_CREATE; 285 286 memset (&ev, 0, sizeof(ev)); 287 ev.source.client = SNDRV_SEQ_CLIENT_OSS; 288 ev.dest = arg->addr; 289 290 ev.flags = SNDRV_SEQ_EVENT_LENGTH_VARUSR; 291 ev.queue = SNDRV_SEQ_QUEUE_DIRECT; 292 293 fs = snd_enter_user(); 294 __again: 295 ev.type = SNDRV_SEQ_EVENT_INSTR_PUT; 296 ev.data.ext.len = size; 297 ev.data.ext.ptr = put; 298 299 err = snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev, 300 opl3->seq_client, 0, 0); 301 if (err == -EBUSY) { 302 struct snd_seq_instr_header remove; 303 304 memset (&remove, 0, sizeof(remove)); 305 remove.cmd = SNDRV_SEQ_INSTR_FREE_CMD_SINGLE; 306 remove.id.instr = put->id.instr; 307 308 /* remove instrument */ 309 ev.type = SNDRV_SEQ_EVENT_INSTR_FREE; 310 ev.data.ext.len = sizeof(remove); 311 ev.data.ext.ptr = &remove; 312 313 snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev, 314 opl3->seq_client, 0, 0); 315 goto __again; 316 } 317 snd_leave_user(fs); 318 319 kfree(put); 320 } 321 return err; 322} 323 324/* ioctl */ 325static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, 326 unsigned long ioarg) 327{ 328 struct snd_opl3 *opl3; 329 330 snd_assert(arg != NULL, return -ENXIO); 331 opl3 = arg->private_data; 332 switch (cmd) { 333 case SNDCTL_FM_LOAD_INSTR: 334 snd_printk("OPL3: Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. Fix the program.\n"); 335 return -EINVAL; 336 337 case SNDCTL_SYNTH_MEMAVL: 338 return 0x7fffffff; 339 340 case SNDCTL_FM_4OP_ENABLE: 341 // handled automatically by OPL instrument type 342 return 0; 343 344 default: 345 return -EINVAL; 346 } 347 return 0; 348} 349 350/* reset device */ 351static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *arg) 352{ 353 struct snd_opl3 *opl3; 354 355 snd_assert(arg != NULL, return -ENXIO); 356 opl3 = arg->private_data; 357 358 return 0; 359} 360