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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Interface for OSS sequencer emulation | |
4 | * | |
5 | * Copyright (C) 1999 Takashi Iwai <tiwai@suse.de> | |
6 | * | |
1da177e4 LT |
7 | * Changes |
8 | * 19990227 Steve Ratcliffe Made separate file and merged in latest | |
9 | * midi emulation. | |
10 | */ | |
11 | ||
1da177e4 | 12 | |
d81a6d71 | 13 | #include <linux/export.h> |
976412fb | 14 | #include <linux/uaccess.h> |
1da177e4 LT |
15 | #include <sound/core.h> |
16 | #include "emux_voice.h" | |
17 | #include <sound/asoundef.h> | |
18 | ||
03da312a TI |
19 | static int snd_emux_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure); |
20 | static int snd_emux_close_seq_oss(struct snd_seq_oss_arg *arg); | |
21 | static int snd_emux_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, | |
22 | unsigned long ioarg); | |
23 | static int snd_emux_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, | |
24 | const char __user *buf, int offs, int count); | |
25 | static int snd_emux_reset_seq_oss(struct snd_seq_oss_arg *arg); | |
26 | static int snd_emux_event_oss_input(struct snd_seq_event *ev, int direct, | |
27 | void *private, int atomic, int hop); | |
28 | static void reset_port_mode(struct snd_emux_port *port, int midi_mode); | |
29 | static void emuspec_control(struct snd_emux *emu, struct snd_emux_port *port, | |
30 | int cmd, unsigned char *event, int atomic, int hop); | |
31 | static void gusspec_control(struct snd_emux *emu, struct snd_emux_port *port, | |
32 | int cmd, unsigned char *event, int atomic, int hop); | |
33 | static void fake_event(struct snd_emux *emu, struct snd_emux_port *port, | |
34 | int ch, int param, int val, int atomic, int hop); | |
1da177e4 LT |
35 | |
36 | /* operators */ | |
03da312a | 37 | static struct snd_seq_oss_callback oss_callback = { |
1da177e4 LT |
38 | .owner = THIS_MODULE, |
39 | .open = snd_emux_open_seq_oss, | |
40 | .close = snd_emux_close_seq_oss, | |
41 | .ioctl = snd_emux_ioctl_seq_oss, | |
42 | .load_patch = snd_emux_load_patch_seq_oss, | |
43 | .reset = snd_emux_reset_seq_oss, | |
44 | }; | |
45 | ||
46 | ||
47 | /* | |
48 | * register OSS synth | |
49 | */ | |
50 | ||
51 | void | |
03da312a | 52 | snd_emux_init_seq_oss(struct snd_emux *emu) |
1da177e4 | 53 | { |
03da312a TI |
54 | struct snd_seq_oss_reg *arg; |
55 | struct snd_seq_device *dev; | |
1da177e4 | 56 | |
225db576 TI |
57 | /* using device#1 here for avoiding conflicts with OPL3 */ |
58 | if (snd_seq_device_new(emu->card, 1, SNDRV_SEQ_DEV_ID_OSS, | |
03da312a | 59 | sizeof(struct snd_seq_oss_reg), &dev) < 0) |
1da177e4 LT |
60 | return; |
61 | ||
62 | emu->oss_synth = dev; | |
63 | strcpy(dev->name, emu->name); | |
64 | arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); | |
65 | arg->type = SYNTH_TYPE_SAMPLE; | |
66 | arg->subtype = SAMPLE_TYPE_AWE32; | |
67 | arg->nvoices = emu->max_voices; | |
68 | arg->oper = oss_callback; | |
69 | arg->private_data = emu; | |
70 | ||
71 | /* register to OSS synth table */ | |
72 | snd_device_register(emu->card, dev); | |
73 | } | |
74 | ||
75 | ||
76 | /* | |
77 | * unregister | |
78 | */ | |
79 | void | |
03da312a | 80 | snd_emux_detach_seq_oss(struct snd_emux *emu) |
1da177e4 LT |
81 | { |
82 | if (emu->oss_synth) { | |
83 | snd_device_free(emu->card, emu->oss_synth); | |
84 | emu->oss_synth = NULL; | |
85 | } | |
86 | } | |
87 | ||
88 | ||
89 | /* use port number as a unique soundfont client number */ | |
90 | #define SF_CLIENT_NO(p) ((p) + 0x1000) | |
91 | ||
92 | /* | |
93 | * open port for OSS sequencer | |
94 | */ | |
95 | static int | |
03da312a | 96 | snd_emux_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure) |
1da177e4 | 97 | { |
03da312a TI |
98 | struct snd_emux *emu; |
99 | struct snd_emux_port *p; | |
100 | struct snd_seq_port_callback callback; | |
1da177e4 LT |
101 | char tmpname[64]; |
102 | ||
103 | emu = closure; | |
5e246b85 TI |
104 | if (snd_BUG_ON(!arg || !emu)) |
105 | return -ENXIO; | |
1da177e4 | 106 | |
1c94e65c | 107 | if (!snd_emux_inc_count(emu)) |
1da177e4 | 108 | return -EFAULT; |
1da177e4 LT |
109 | |
110 | memset(&callback, 0, sizeof(callback)); | |
111 | callback.owner = THIS_MODULE; | |
112 | callback.event_input = snd_emux_event_oss_input; | |
113 | ||
114 | sprintf(tmpname, "%s OSS Port", emu->name); | |
115 | p = snd_emux_create_port(emu, tmpname, 32, | |
116 | 1, &callback); | |
117 | if (p == NULL) { | |
42b0158b | 118 | snd_printk(KERN_ERR "can't create port\n"); |
1da177e4 | 119 | snd_emux_dec_count(emu); |
1da177e4 LT |
120 | return -ENOMEM; |
121 | } | |
122 | ||
123 | /* fill the argument data */ | |
124 | arg->private_data = p; | |
125 | arg->addr.client = p->chset.client; | |
126 | arg->addr.port = p->chset.port; | |
127 | p->oss_arg = arg; | |
128 | ||
129 | reset_port_mode(p, arg->seq_mode); | |
130 | ||
131 | snd_emux_reset_port(p); | |
1da177e4 LT |
132 | return 0; |
133 | } | |
134 | ||
135 | ||
136 | #define DEFAULT_DRUM_FLAGS ((1<<9) | (1<<25)) | |
137 | ||
138 | /* | |
139 | * reset port mode | |
140 | */ | |
141 | static void | |
03da312a | 142 | reset_port_mode(struct snd_emux_port *port, int midi_mode) |
1da177e4 LT |
143 | { |
144 | if (midi_mode) { | |
145 | port->port_mode = SNDRV_EMUX_PORT_MODE_OSS_MIDI; | |
146 | port->drum_flags = DEFAULT_DRUM_FLAGS; | |
147 | port->volume_atten = 0; | |
148 | port->oss_arg->event_passing = SNDRV_SEQ_OSS_PROCESS_KEYPRESS; | |
149 | } else { | |
150 | port->port_mode = SNDRV_EMUX_PORT_MODE_OSS_SYNTH; | |
151 | port->drum_flags = 0; | |
152 | port->volume_atten = 32; | |
153 | port->oss_arg->event_passing = SNDRV_SEQ_OSS_PROCESS_EVENTS; | |
154 | } | |
155 | } | |
156 | ||
157 | ||
158 | /* | |
159 | * close port | |
160 | */ | |
161 | static int | |
03da312a | 162 | snd_emux_close_seq_oss(struct snd_seq_oss_arg *arg) |
1da177e4 | 163 | { |
03da312a TI |
164 | struct snd_emux *emu; |
165 | struct snd_emux_port *p; | |
1da177e4 | 166 | |
5e246b85 TI |
167 | if (snd_BUG_ON(!arg)) |
168 | return -ENXIO; | |
1da177e4 | 169 | p = arg->private_data; |
5e246b85 TI |
170 | if (snd_BUG_ON(!p)) |
171 | return -ENXIO; | |
1da177e4 LT |
172 | |
173 | emu = p->emu; | |
5e246b85 TI |
174 | if (snd_BUG_ON(!emu)) |
175 | return -ENXIO; | |
1da177e4 | 176 | |
1da177e4 LT |
177 | snd_emux_sounds_off_all(p); |
178 | snd_soundfont_close_check(emu->sflist, SF_CLIENT_NO(p->chset.port)); | |
179 | snd_seq_event_port_detach(p->chset.client, p->chset.port); | |
180 | snd_emux_dec_count(emu); | |
181 | ||
1da177e4 LT |
182 | return 0; |
183 | } | |
184 | ||
185 | ||
186 | /* | |
187 | * load patch | |
188 | */ | |
189 | static int | |
03da312a | 190 | snd_emux_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, |
1da177e4 LT |
191 | const char __user *buf, int offs, int count) |
192 | { | |
03da312a TI |
193 | struct snd_emux *emu; |
194 | struct snd_emux_port *p; | |
1da177e4 LT |
195 | int rc; |
196 | ||
5e246b85 TI |
197 | if (snd_BUG_ON(!arg)) |
198 | return -ENXIO; | |
1da177e4 | 199 | p = arg->private_data; |
5e246b85 TI |
200 | if (snd_BUG_ON(!p)) |
201 | return -ENXIO; | |
1da177e4 LT |
202 | |
203 | emu = p->emu; | |
5e246b85 TI |
204 | if (snd_BUG_ON(!emu)) |
205 | return -ENXIO; | |
1da177e4 LT |
206 | |
207 | if (format == GUS_PATCH) | |
208 | rc = snd_soundfont_load_guspatch(emu->sflist, buf, count, | |
209 | SF_CLIENT_NO(p->chset.port)); | |
210 | else if (format == SNDRV_OSS_SOUNDFONT_PATCH) { | |
03da312a | 211 | struct soundfont_patch_info patch; |
1da177e4 | 212 | if (count < (int)sizeof(patch)) |
5885615e | 213 | return -EINVAL; |
1da177e4 | 214 | if (copy_from_user(&patch, buf, sizeof(patch))) |
5885615e | 215 | return -EFAULT; |
1da177e4 LT |
216 | if (patch.type >= SNDRV_SFNT_LOAD_INFO && |
217 | patch.type <= SNDRV_SFNT_PROBE_DATA) | |
218 | rc = snd_soundfont_load(emu->sflist, buf, count, SF_CLIENT_NO(p->chset.port)); | |
219 | else { | |
220 | if (emu->ops.load_fx) | |
221 | rc = emu->ops.load_fx(emu, patch.type, patch.optarg, buf, count); | |
222 | else | |
223 | rc = -EINVAL; | |
224 | } | |
225 | } else | |
226 | rc = 0; | |
227 | return rc; | |
228 | } | |
229 | ||
230 | ||
231 | /* | |
232 | * ioctl | |
233 | */ | |
234 | static int | |
03da312a | 235 | snd_emux_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg) |
1da177e4 | 236 | { |
03da312a TI |
237 | struct snd_emux_port *p; |
238 | struct snd_emux *emu; | |
1da177e4 | 239 | |
5e246b85 TI |
240 | if (snd_BUG_ON(!arg)) |
241 | return -ENXIO; | |
1da177e4 | 242 | p = arg->private_data; |
5e246b85 TI |
243 | if (snd_BUG_ON(!p)) |
244 | return -ENXIO; | |
1da177e4 LT |
245 | |
246 | emu = p->emu; | |
5e246b85 TI |
247 | if (snd_BUG_ON(!emu)) |
248 | return -ENXIO; | |
1da177e4 LT |
249 | |
250 | switch (cmd) { | |
251 | case SNDCTL_SEQ_RESETSAMPLES: | |
252 | snd_soundfont_remove_samples(emu->sflist); | |
253 | return 0; | |
254 | ||
255 | case SNDCTL_SYNTH_MEMAVL: | |
256 | if (emu->memhdr) | |
257 | return snd_util_mem_avail(emu->memhdr); | |
258 | return 0; | |
259 | } | |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
264 | ||
265 | /* | |
266 | * reset device | |
267 | */ | |
268 | static int | |
03da312a | 269 | snd_emux_reset_seq_oss(struct snd_seq_oss_arg *arg) |
1da177e4 | 270 | { |
03da312a | 271 | struct snd_emux_port *p; |
1da177e4 | 272 | |
5e246b85 TI |
273 | if (snd_BUG_ON(!arg)) |
274 | return -ENXIO; | |
1da177e4 | 275 | p = arg->private_data; |
5e246b85 TI |
276 | if (snd_BUG_ON(!p)) |
277 | return -ENXIO; | |
1da177e4 LT |
278 | snd_emux_reset_port(p); |
279 | return 0; | |
280 | } | |
281 | ||
282 | ||
283 | /* | |
284 | * receive raw events: only SEQ_PRIVATE is accepted. | |
285 | */ | |
286 | static int | |
03da312a | 287 | snd_emux_event_oss_input(struct snd_seq_event *ev, int direct, void *private_data, |
1da177e4 LT |
288 | int atomic, int hop) |
289 | { | |
03da312a TI |
290 | struct snd_emux *emu; |
291 | struct snd_emux_port *p; | |
1da177e4 LT |
292 | unsigned char cmd, *data; |
293 | ||
294 | p = private_data; | |
5e246b85 TI |
295 | if (snd_BUG_ON(!p)) |
296 | return -EINVAL; | |
1da177e4 | 297 | emu = p->emu; |
5e246b85 TI |
298 | if (snd_BUG_ON(!emu)) |
299 | return -EINVAL; | |
1da177e4 LT |
300 | if (ev->type != SNDRV_SEQ_EVENT_OSS) |
301 | return snd_emux_event_input(ev, direct, private_data, atomic, hop); | |
302 | ||
303 | data = ev->data.raw8.d; | |
304 | /* only SEQ_PRIVATE is accepted */ | |
305 | if (data[0] != 0xfe) | |
306 | return 0; | |
307 | cmd = data[2] & _EMUX_OSS_MODE_VALUE_MASK; | |
308 | if (data[2] & _EMUX_OSS_MODE_FLAG) | |
309 | emuspec_control(emu, p, cmd, data, atomic, hop); | |
310 | else | |
311 | gusspec_control(emu, p, cmd, data, atomic, hop); | |
312 | return 0; | |
313 | } | |
314 | ||
315 | ||
316 | /* | |
317 | * OSS/AWE driver specific h/w controls | |
318 | */ | |
319 | static void | |
03da312a | 320 | emuspec_control(struct snd_emux *emu, struct snd_emux_port *port, int cmd, |
1da177e4 LT |
321 | unsigned char *event, int atomic, int hop) |
322 | { | |
323 | int voice; | |
324 | unsigned short p1; | |
325 | short p2; | |
326 | int i; | |
03da312a | 327 | struct snd_midi_channel *chan; |
1da177e4 LT |
328 | |
329 | voice = event[3]; | |
330 | if (voice < 0 || voice >= port->chset.max_channels) | |
331 | chan = NULL; | |
332 | else | |
333 | chan = &port->chset.channels[voice]; | |
334 | ||
335 | p1 = *(unsigned short *) &event[4]; | |
336 | p2 = *(short *) &event[6]; | |
337 | ||
338 | switch (cmd) { | |
339 | #if 0 /* don't do this atomically */ | |
340 | case _EMUX_OSS_REMOVE_LAST_SAMPLES: | |
341 | snd_soundfont_remove_unlocked(emu->sflist); | |
342 | break; | |
343 | #endif | |
344 | case _EMUX_OSS_SEND_EFFECT: | |
345 | if (chan) | |
346 | snd_emux_send_effect_oss(port, chan, p1, p2); | |
347 | break; | |
348 | ||
349 | case _EMUX_OSS_TERMINATE_ALL: | |
350 | snd_emux_terminate_all(emu); | |
351 | break; | |
352 | ||
353 | case _EMUX_OSS_TERMINATE_CHANNEL: | |
354 | /*snd_emux_mute_channel(emu, chan);*/ | |
355 | break; | |
356 | case _EMUX_OSS_RESET_CHANNEL: | |
357 | /*snd_emux_channel_init(chset, chan);*/ | |
358 | break; | |
359 | ||
360 | case _EMUX_OSS_RELEASE_ALL: | |
361 | fake_event(emu, port, voice, MIDI_CTL_ALL_NOTES_OFF, 0, atomic, hop); | |
362 | break; | |
363 | case _EMUX_OSS_NOTEOFF_ALL: | |
364 | fake_event(emu, port, voice, MIDI_CTL_ALL_SOUNDS_OFF, 0, atomic, hop); | |
365 | break; | |
366 | ||
367 | case _EMUX_OSS_INITIAL_VOLUME: | |
368 | if (p2) { | |
369 | port->volume_atten = (short)p1; | |
370 | snd_emux_update_port(port, SNDRV_EMUX_UPDATE_VOLUME); | |
371 | } | |
372 | break; | |
373 | ||
374 | case _EMUX_OSS_CHN_PRESSURE: | |
375 | if (chan) { | |
376 | chan->midi_pressure = p1; | |
377 | snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_FMMOD|SNDRV_EMUX_UPDATE_FM2FRQ2); | |
378 | } | |
379 | break; | |
380 | ||
381 | case _EMUX_OSS_CHANNEL_MODE: | |
382 | reset_port_mode(port, p1); | |
383 | snd_emux_reset_port(port); | |
384 | break; | |
385 | ||
386 | case _EMUX_OSS_DRUM_CHANNELS: | |
387 | port->drum_flags = *(unsigned int*)&event[4]; | |
388 | for (i = 0; i < port->chset.max_channels; i++) { | |
389 | chan = &port->chset.channels[i]; | |
390 | chan->drum_channel = ((port->drum_flags >> i) & 1) ? 1 : 0; | |
391 | } | |
392 | break; | |
393 | ||
394 | case _EMUX_OSS_MISC_MODE: | |
395 | if (p1 < EMUX_MD_END) | |
396 | port->ctrls[p1] = p2; | |
397 | break; | |
398 | case _EMUX_OSS_DEBUG_MODE: | |
399 | break; | |
400 | ||
401 | default: | |
402 | if (emu->ops.oss_ioctl) | |
403 | emu->ops.oss_ioctl(emu, cmd, p1, p2); | |
404 | break; | |
405 | } | |
406 | } | |
407 | ||
408 | /* | |
409 | * GUS specific h/w controls | |
410 | */ | |
411 | ||
412 | #include <linux/ultrasound.h> | |
413 | ||
414 | static void | |
03da312a | 415 | gusspec_control(struct snd_emux *emu, struct snd_emux_port *port, int cmd, |
1da177e4 LT |
416 | unsigned char *event, int atomic, int hop) |
417 | { | |
418 | int voice; | |
419 | unsigned short p1; | |
1da177e4 | 420 | int plong; |
03da312a | 421 | struct snd_midi_channel *chan; |
1da177e4 LT |
422 | |
423 | if (port->port_mode != SNDRV_EMUX_PORT_MODE_OSS_SYNTH) | |
424 | return; | |
425 | if (cmd == _GUS_NUMVOICES) | |
426 | return; | |
427 | voice = event[3]; | |
428 | if (voice < 0 || voice >= port->chset.max_channels) | |
429 | return; | |
430 | ||
431 | chan = &port->chset.channels[voice]; | |
432 | ||
433 | p1 = *(unsigned short *) &event[4]; | |
1da177e4 LT |
434 | plong = *(int*) &event[4]; |
435 | ||
436 | switch (cmd) { | |
437 | case _GUS_VOICESAMPLE: | |
438 | chan->midi_program = p1; | |
439 | return; | |
440 | ||
441 | case _GUS_VOICEBALA: | |
442 | /* 0 to 15 --> 0 to 127 */ | |
443 | chan->control[MIDI_CTL_MSB_PAN] = (int)p1 << 3; | |
444 | snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_PAN); | |
445 | return; | |
446 | ||
447 | case _GUS_VOICEVOL: | |
448 | case _GUS_VOICEVOL2: | |
449 | /* not supported yet */ | |
450 | return; | |
451 | ||
452 | case _GUS_RAMPRANGE: | |
453 | case _GUS_RAMPRATE: | |
454 | case _GUS_RAMPMODE: | |
455 | case _GUS_RAMPON: | |
456 | case _GUS_RAMPOFF: | |
457 | /* volume ramping not supported */ | |
458 | return; | |
459 | ||
460 | case _GUS_VOLUME_SCALE: | |
461 | return; | |
462 | ||
463 | case _GUS_VOICE_POS: | |
464 | #ifdef SNDRV_EMUX_USE_RAW_EFFECT | |
465 | snd_emux_send_effect(port, chan, EMUX_FX_SAMPLE_START, | |
466 | (short)(plong & 0x7fff), | |
467 | EMUX_FX_FLAG_SET); | |
468 | snd_emux_send_effect(port, chan, EMUX_FX_COARSE_SAMPLE_START, | |
469 | (plong >> 15) & 0xffff, | |
470 | EMUX_FX_FLAG_SET); | |
471 | #endif | |
472 | return; | |
473 | } | |
474 | } | |
475 | ||
476 | ||
477 | /* | |
478 | * send an event to midi emulation | |
479 | */ | |
480 | static void | |
03da312a | 481 | fake_event(struct snd_emux *emu, struct snd_emux_port *port, int ch, int param, int val, int atomic, int hop) |
1da177e4 | 482 | { |
03da312a | 483 | struct snd_seq_event ev; |
1da177e4 LT |
484 | memset(&ev, 0, sizeof(ev)); |
485 | ev.type = SNDRV_SEQ_EVENT_CONTROLLER; | |
486 | ev.data.control.channel = ch; | |
487 | ev.data.control.param = param; | |
488 | ev.data.control.value = val; | |
489 | snd_emux_event_input(&ev, 0, port, atomic, hop); | |
490 | } |