1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 * Routines for control of GF1 chip (PCM things)
5 *
6 * InterWave chips supports interleaved DMA, but this feature isn't used in
7 * this code.
8 *
9 * This code emulates autoinit DMA transfer for playback, recording by GF1
10 * chip doesn't support autoinit DMA.
11 */
12
13 #include <asm/dma.h>
14 #include <linux/slab.h>
15 #include <linux/sched/signal.h>
16
17 #include <sound/core.h>
18 #include <sound/control.h>
19 #include <sound/gus.h>
20 #include <sound/pcm_params.h>
21 #include "gus_tables.h"
22
23 /* maximum rate */
24
25 #define SNDRV_GF1_PCM_RATE 48000
26
27 #define SNDRV_GF1_PCM_PFLG_NONE 0
28 #define SNDRV_GF1_PCM_PFLG_ACTIVE (1<<0)
29 #define SNDRV_GF1_PCM_PFLG_NEUTRAL (2<<0)
30
31 struct gus_pcm_private {
32 struct snd_gus_card * gus;
33 struct snd_pcm_substream *substream;
34 spinlock_t lock;
35 unsigned int voices;
36 struct snd_gus_voice *pvoices[2];
37 unsigned int memory;
38 unsigned short flags;
39 unsigned char voice_ctrl, ramp_ctrl;
40 unsigned int bpos;
41 unsigned int blocks;
42 unsigned int block_size;
43 unsigned int dma_size;
44 wait_queue_head_t sleep;
45 atomic_t dma_count;
46 int final_volume;
47 };
48
snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus,void * private_data)49 static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data)
50 {
51 struct gus_pcm_private *pcmp = private_data;
52
53 if (pcmp) {
54 atomic_dec(&pcmp->dma_count);
55 wake_up(&pcmp->sleep);
56 }
57 }
58
snd_gf1_pcm_block_change(struct snd_pcm_substream * substream,unsigned int offset,unsigned int addr,unsigned int count)59 static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream,
60 unsigned int offset,
61 unsigned int addr,
62 unsigned int count)
63 {
64 struct snd_gf1_dma_block block;
65 struct snd_pcm_runtime *runtime = substream->runtime;
66 struct gus_pcm_private *pcmp = runtime->private_data;
67
68 count += offset & 31;
69 offset &= ~31;
70 memset(&block, 0, sizeof(block));
71 block.cmd = SNDRV_GF1_DMA_IRQ;
72 if (snd_pcm_format_unsigned(runtime->format))
73 block.cmd |= SNDRV_GF1_DMA_UNSIGNED;
74 if (snd_pcm_format_width(runtime->format) == 16)
75 block.cmd |= SNDRV_GF1_DMA_16BIT;
76 block.addr = addr & ~31;
77 block.buffer = runtime->dma_area + offset;
78 block.buf_addr = runtime->dma_addr + offset;
79 block.count = count;
80 block.private_data = pcmp;
81 block.ack = snd_gf1_pcm_block_change_ack;
82 if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0))
83 atomic_inc(&pcmp->dma_count);
84 return 0;
85 }
86
snd_gf1_pcm_trigger_up(struct snd_pcm_substream * substream)87 static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
88 {
89 struct snd_pcm_runtime *runtime = substream->runtime;
90 struct gus_pcm_private *pcmp = runtime->private_data;
91 struct snd_gus_card * gus = pcmp->gus;
92 unsigned long flags;
93 unsigned char voice_ctrl, ramp_ctrl;
94 unsigned short rate;
95 unsigned int curr, begin, end;
96 unsigned short vol;
97 unsigned char pan;
98 unsigned int voice;
99
100 spin_lock_irqsave(&pcmp->lock, flags);
101 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
102 spin_unlock_irqrestore(&pcmp->lock, flags);
103 return;
104 }
105 pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE;
106 pcmp->final_volume = 0;
107 spin_unlock_irqrestore(&pcmp->lock, flags);
108 rate = snd_gf1_translate_freq(gus, runtime->rate << 4);
109 /* enable WAVE IRQ */
110 voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20;
111 /* enable RAMP IRQ + rollover */
112 ramp_ctrl = 0x24;
113 if (pcmp->blocks == 1) {
114 voice_ctrl |= 0x08; /* loop enable */
115 ramp_ctrl &= ~0x04; /* disable rollover */
116 }
117 for (voice = 0; voice < pcmp->voices; voice++) {
118 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels);
119 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels;
120 end = curr + (pcmp->block_size / runtime->channels);
121 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1;
122 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
123 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
124 spin_lock_irqsave(&gus->reg_lock, flags);
125 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
126 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
127 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
128 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
129 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
130 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
131 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
132 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
133 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
134 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
135 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
136 if (!gus->gf1.enh_mode) {
137 snd_gf1_delay(gus);
138 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
139 }
140 spin_unlock_irqrestore(&gus->reg_lock, flags);
141 }
142 spin_lock_irqsave(&gus->reg_lock, flags);
143 for (voice = 0; voice < pcmp->voices; voice++) {
144 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
145 if (gus->gf1.enh_mode)
146 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00); /* deactivate voice */
147 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
148 voice_ctrl &= ~0x20;
149 }
150 voice_ctrl |= 0x20;
151 if (!gus->gf1.enh_mode) {
152 snd_gf1_delay(gus);
153 for (voice = 0; voice < pcmp->voices; voice++) {
154 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
155 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
156 voice_ctrl &= ~0x20; /* disable IRQ for next voice */
157 }
158 }
159 spin_unlock_irqrestore(&gus->reg_lock, flags);
160 }
161
snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,struct snd_gus_voice * pvoice)162 static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,
163 struct snd_gus_voice *pvoice)
164 {
165 struct gus_pcm_private * pcmp;
166 struct snd_pcm_runtime *runtime;
167 unsigned char voice_ctrl, ramp_ctrl;
168 unsigned int idx;
169 unsigned int end, step;
170
171 if (!pvoice->private_data) {
172 dev_dbg(gus->card->dev, "%s: unknown wave irq?\n", __func__);
173 snd_gf1_smart_stop_voice(gus, pvoice->number);
174 return;
175 }
176 pcmp = pvoice->private_data;
177 if (pcmp == NULL) {
178 dev_dbg(gus->card->dev, "%s: unknown wave irq?\n", __func__);
179 snd_gf1_smart_stop_voice(gus, pvoice->number);
180 return;
181 }
182 gus = pcmp->gus;
183 runtime = pcmp->substream->runtime;
184
185 spin_lock(&gus->reg_lock);
186 snd_gf1_select_voice(gus, pvoice->number);
187 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
188 ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
189 #if 0
190 snd_gf1_select_voice(gus, pvoice->number);
191 dev_dbg(gus->card->dev, "position = 0x%x\n",
192 (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
193 snd_gf1_select_voice(gus, pcmp->pvoices[1]->number);
194 dev_dbg(gus->card->dev, "position = 0x%x\n",
195 (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
196 snd_gf1_select_voice(gus, pvoice->number);
197 #endif
198 pcmp->bpos++;
199 pcmp->bpos %= pcmp->blocks;
200 if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */
201 voice_ctrl |= 0x08; /* enable loop */
202 } else {
203 ramp_ctrl |= 0x04; /* enable rollover */
204 }
205 end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
206 end -= voice_ctrl & 4 ? 2 : 1;
207 step = pcmp->dma_size / runtime->channels;
208 voice_ctrl |= 0x20;
209 if (!pcmp->final_volume) {
210 ramp_ctrl |= 0x20;
211 ramp_ctrl &= ~0x03;
212 }
213 for (idx = 0; idx < pcmp->voices; idx++, end += step) {
214 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
215 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
216 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
217 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
218 voice_ctrl &= ~0x20;
219 }
220 if (!gus->gf1.enh_mode) {
221 snd_gf1_delay(gus);
222 voice_ctrl |= 0x20;
223 for (idx = 0; idx < pcmp->voices; idx++) {
224 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
225 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
226 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
227 voice_ctrl &= ~0x20;
228 }
229 }
230 spin_unlock(&gus->reg_lock);
231
232 snd_pcm_period_elapsed(pcmp->substream);
233 #if 0
234 if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
235 *runtime->state == SNDRV_PCM_STATE_RUNNING) {
236 end = pcmp->bpos * pcmp->block_size;
237 if (runtime->channels > 1) {
238 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
239 snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
240 } else {
241 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
242 }
243 }
244 #endif
245 }
246
snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,struct snd_gus_voice * pvoice)247 static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,
248 struct snd_gus_voice * pvoice)
249 {
250 unsigned short vol;
251 int cvoice;
252 struct gus_pcm_private *pcmp = pvoice->private_data;
253
254 /* stop ramp, but leave rollover bit untouched */
255 spin_lock(&gus->reg_lock);
256 snd_gf1_select_voice(gus, pvoice->number);
257 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
258 spin_unlock(&gus->reg_lock);
259 if (pcmp == NULL)
260 return;
261 /* are we active? */
262 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
263 return;
264 /* load real volume - better precision */
265 cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1;
266 if (pcmp->substream == NULL)
267 return;
268 vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
269 spin_lock(&gus->reg_lock);
270 snd_gf1_select_voice(gus, pvoice->number);
271 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
272 pcmp->final_volume = 1;
273 spin_unlock(&gus->reg_lock);
274 }
275
snd_gf1_pcm_volume_change(struct snd_gus_card * gus)276 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus)
277 {
278 }
279
snd_gf1_pcm_poke_block(struct snd_gus_card * gus,unsigned char * buf,unsigned int pos,unsigned int count,int w16,int invert)280 static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
281 unsigned int pos, unsigned int count,
282 int w16, int invert)
283 {
284 unsigned int len;
285 unsigned long flags;
286
287 while (count > 0) {
288 len = count;
289 if (len > 512) /* limit, to allow IRQ */
290 len = 512;
291 count -= len;
292 if (gus->interwave) {
293 spin_lock_irqsave(&gus->reg_lock, flags);
294 snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00));
295 snd_gf1_dram_addr(gus, pos);
296 if (w16) {
297 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL));
298 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1);
299 } else {
300 outsb(GUSP(gus, DRAM), buf, len);
301 }
302 spin_unlock_irqrestore(&gus->reg_lock, flags);
303 buf += 512;
304 pos += 512;
305 } else {
306 invert = invert ? 0x80 : 0x00;
307 if (w16) {
308 len >>= 1;
309 while (len--) {
310 snd_gf1_poke(gus, pos++, *buf++);
311 snd_gf1_poke(gus, pos++, *buf++ ^ invert);
312 }
313 } else {
314 while (len--)
315 snd_gf1_poke(gus, pos++, *buf++ ^ invert);
316 }
317 }
318 if (count > 0 && !in_interrupt()) {
319 schedule_timeout_interruptible(1);
320 if (signal_pending(current))
321 return -EAGAIN;
322 }
323 }
324 return 0;
325 }
326
get_bpos(struct gus_pcm_private * pcmp,int voice,unsigned int pos,unsigned int len)327 static int get_bpos(struct gus_pcm_private *pcmp, int voice, unsigned int pos,
328 unsigned int len)
329 {
330 unsigned int bpos = pos + (voice * (pcmp->dma_size / 2));
331 if (snd_BUG_ON(bpos > pcmp->dma_size))
332 return -EIO;
333 if (snd_BUG_ON(bpos + len > pcmp->dma_size))
334 return -EIO;
335 return bpos;
336 }
337
playback_copy_ack(struct snd_pcm_substream * substream,unsigned int bpos,unsigned int len)338 static int playback_copy_ack(struct snd_pcm_substream *substream,
339 unsigned int bpos, unsigned int len)
340 {
341 struct snd_pcm_runtime *runtime = substream->runtime;
342 struct gus_pcm_private *pcmp = runtime->private_data;
343 struct snd_gus_card *gus = pcmp->gus;
344 int w16, invert;
345
346 if (len > 32)
347 return snd_gf1_pcm_block_change(substream, bpos,
348 pcmp->memory + bpos, len);
349
350 w16 = (snd_pcm_format_width(runtime->format) == 16);
351 invert = snd_pcm_format_unsigned(runtime->format);
352 return snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos,
353 pcmp->memory + bpos, len, w16, invert);
354 }
355
snd_gf1_pcm_playback_copy(struct snd_pcm_substream * substream,int voice,unsigned long pos,struct iov_iter * src,unsigned long count)356 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
357 int voice, unsigned long pos,
358 struct iov_iter *src, unsigned long count)
359 {
360 struct snd_pcm_runtime *runtime = substream->runtime;
361 struct gus_pcm_private *pcmp = runtime->private_data;
362 unsigned int len = count;
363 int bpos;
364
365 bpos = get_bpos(pcmp, voice, pos, len);
366 if (bpos < 0)
367 return bpos;
368 if (copy_from_iter(runtime->dma_area + bpos, len, src) != len)
369 return -EFAULT;
370 return playback_copy_ack(substream, bpos, len);
371 }
372
snd_gf1_pcm_playback_silence(struct snd_pcm_substream * substream,int voice,unsigned long pos,unsigned long count)373 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
374 int voice, unsigned long pos,
375 unsigned long count)
376 {
377 struct snd_pcm_runtime *runtime = substream->runtime;
378 struct gus_pcm_private *pcmp = runtime->private_data;
379 unsigned int len = count;
380 int bpos;
381
382 bpos = get_bpos(pcmp, voice, pos, len);
383 if (bpos < 0)
384 return bpos;
385 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos,
386 bytes_to_samples(runtime, count));
387 return playback_copy_ack(substream, bpos, len);
388 }
389
snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)390 static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,
391 struct snd_pcm_hw_params *hw_params)
392 {
393 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
394 struct snd_pcm_runtime *runtime = substream->runtime;
395 struct gus_pcm_private *pcmp = runtime->private_data;
396
397 if (runtime->buffer_changed) {
398 struct snd_gf1_mem_block *block;
399 if (pcmp->memory > 0) {
400 snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
401 pcmp->memory = 0;
402 }
403 block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
404 SNDRV_GF1_MEM_OWNER_DRIVER,
405 "GF1 PCM",
406 runtime->dma_bytes, 1, 32,
407 NULL);
408 if (!block)
409 return -ENOMEM;
410 pcmp->memory = block->ptr;
411 }
412 pcmp->voices = params_channels(hw_params);
413 if (pcmp->pvoices[0] == NULL) {
414 pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0);
415 if (!pcmp->pvoices[0])
416 return -ENOMEM;
417 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
418 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
419 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
420 pcmp->pvoices[0]->private_data = pcmp;
421 }
422 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
423 pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0);
424 if (!pcmp->pvoices[1])
425 return -ENOMEM;
426 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
427 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
428 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
429 pcmp->pvoices[1]->private_data = pcmp;
430 } else if (pcmp->voices == 1) {
431 if (pcmp->pvoices[1]) {
432 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
433 pcmp->pvoices[1] = NULL;
434 }
435 }
436 return 0;
437 }
438
snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream * substream)439 static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream)
440 {
441 struct snd_pcm_runtime *runtime = substream->runtime;
442 struct gus_pcm_private *pcmp = runtime->private_data;
443
444 if (pcmp->pvoices[0]) {
445 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
446 pcmp->pvoices[0] = NULL;
447 }
448 if (pcmp->pvoices[1]) {
449 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
450 pcmp->pvoices[1] = NULL;
451 }
452 if (pcmp->memory > 0) {
453 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
454 pcmp->memory = 0;
455 }
456 return 0;
457 }
458
snd_gf1_pcm_playback_prepare(struct snd_pcm_substream * substream)459 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream)
460 {
461 struct snd_pcm_runtime *runtime = substream->runtime;
462 struct gus_pcm_private *pcmp = runtime->private_data;
463
464 pcmp->bpos = 0;
465 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
466 pcmp->block_size = snd_pcm_lib_period_bytes(substream);
467 pcmp->blocks = pcmp->dma_size / pcmp->block_size;
468 return 0;
469 }
470
snd_gf1_pcm_playback_trigger(struct snd_pcm_substream * substream,int cmd)471 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream,
472 int cmd)
473 {
474 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
475 struct snd_pcm_runtime *runtime = substream->runtime;
476 struct gus_pcm_private *pcmp = runtime->private_data;
477 int voice;
478
479 if (cmd == SNDRV_PCM_TRIGGER_START) {
480 snd_gf1_pcm_trigger_up(substream);
481 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
482 spin_lock(&pcmp->lock);
483 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
484 spin_unlock(&pcmp->lock);
485 voice = pcmp->pvoices[0]->number;
486 snd_gf1_stop_voices(gus, voice, voice);
487 if (pcmp->pvoices[1]) {
488 voice = pcmp->pvoices[1]->number;
489 snd_gf1_stop_voices(gus, voice, voice);
490 }
491 } else {
492 return -EINVAL;
493 }
494 return 0;
495 }
496
snd_gf1_pcm_playback_pointer(struct snd_pcm_substream * substream)497 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream)
498 {
499 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
500 struct snd_pcm_runtime *runtime = substream->runtime;
501 struct gus_pcm_private *pcmp = runtime->private_data;
502 unsigned int pos;
503 unsigned char voice_ctrl;
504
505 pos = 0;
506 spin_lock(&gus->reg_lock);
507 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
508 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
509 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
510 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
511 if (substream->runtime->channels > 1)
512 pos <<= 1;
513 pos = bytes_to_frames(runtime, pos);
514 }
515 spin_unlock(&gus->reg_lock);
516 return pos;
517 }
518
519 static const struct snd_ratnum clock = {
520 .num = 9878400/16,
521 .den_min = 2,
522 .den_max = 257,
523 .den_step = 1,
524 };
525
526 static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
527 .nrats = 1,
528 .rats = &clock,
529 };
530
snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)531 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream,
532 struct snd_pcm_hw_params *hw_params)
533 {
534 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
535
536 gus->c_dma_size = params_buffer_bytes(hw_params);
537 gus->c_period_size = params_period_bytes(hw_params);
538 gus->c_pos = 0;
539 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */
540 if (params_channels(hw_params) > 1)
541 gus->gf1.pcm_rcntrl_reg |= 2;
542 if (gus->gf1.dma2 > 3)
543 gus->gf1.pcm_rcntrl_reg |= 4;
544 if (snd_pcm_format_unsigned(params_format(hw_params)))
545 gus->gf1.pcm_rcntrl_reg |= 0x80;
546 return 0;
547 }
548
snd_gf1_pcm_capture_prepare(struct snd_pcm_substream * substream)549 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream)
550 {
551 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
552 struct snd_pcm_runtime *runtime = substream->runtime;
553
554 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
555 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
556 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
557 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
558 return 0;
559 }
560
snd_gf1_pcm_capture_trigger(struct snd_pcm_substream * substream,int cmd)561 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream,
562 int cmd)
563 {
564 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
565 int val;
566
567 if (cmd == SNDRV_PCM_TRIGGER_START) {
568 val = gus->gf1.pcm_rcntrl_reg;
569 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
570 val = 0;
571 } else {
572 return -EINVAL;
573 }
574
575 spin_lock(&gus->reg_lock);
576 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
577 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
578 spin_unlock(&gus->reg_lock);
579 return 0;
580 }
581
snd_gf1_pcm_capture_pointer(struct snd_pcm_substream * substream)582 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream)
583 {
584 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
585 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
586 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
587 return pos;
588 }
589
snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)590 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)
591 {
592 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
593 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
594 if (gus->pcm_cap_substream != NULL) {
595 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream);
596 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
597 gus->c_pos += gus->c_period_size;
598 snd_pcm_period_elapsed(gus->pcm_cap_substream);
599 }
600 }
601
602 static const struct snd_pcm_hardware snd_gf1_pcm_playback =
603 {
604 .info = SNDRV_PCM_INFO_NONINTERLEAVED,
605 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
606 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
607 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
608 .rate_min = 5510,
609 .rate_max = 48000,
610 .channels_min = 1,
611 .channels_max = 2,
612 .buffer_bytes_max = (128*1024),
613 .period_bytes_min = 64,
614 .period_bytes_max = (128*1024),
615 .periods_min = 1,
616 .periods_max = 1024,
617 .fifo_size = 0,
618 };
619
620 static const struct snd_pcm_hardware snd_gf1_pcm_capture =
621 {
622 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
623 SNDRV_PCM_INFO_MMAP_VALID),
624 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
625 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
626 .rate_min = 5510,
627 .rate_max = 44100,
628 .channels_min = 1,
629 .channels_max = 2,
630 .buffer_bytes_max = (128*1024),
631 .period_bytes_min = 64,
632 .period_bytes_max = (128*1024),
633 .periods_min = 1,
634 .periods_max = 1024,
635 .fifo_size = 0,
636 };
637
snd_gf1_pcm_playback_free(struct snd_pcm_runtime * runtime)638 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime)
639 {
640 kfree(runtime->private_data);
641 }
642
snd_gf1_pcm_playback_open(struct snd_pcm_substream * substream)643 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream)
644 {
645 struct gus_pcm_private *pcmp;
646 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
647 struct snd_pcm_runtime *runtime = substream->runtime;
648 int err;
649
650 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
651 if (pcmp == NULL)
652 return -ENOMEM;
653 pcmp->gus = gus;
654 spin_lock_init(&pcmp->lock);
655 init_waitqueue_head(&pcmp->sleep);
656 atomic_set(&pcmp->dma_count, 0);
657
658 runtime->private_data = pcmp;
659 runtime->private_free = snd_gf1_pcm_playback_free;
660
661 #if 0
662 dev_dbg(gus->card->dev,
663 "playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n",
664 (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
665 #endif
666 err = snd_gf1_dma_init(gus);
667 if (err < 0)
668 return err;
669 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
670 pcmp->substream = substream;
671 runtime->hw = snd_gf1_pcm_playback;
672 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
673 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
674 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
675 return 0;
676 }
677
snd_gf1_pcm_playback_close(struct snd_pcm_substream * substream)678 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream)
679 {
680 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
681 struct snd_pcm_runtime *runtime = substream->runtime;
682 struct gus_pcm_private *pcmp = runtime->private_data;
683
684 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
685 dev_err(gus->card->dev, "gf1 pcm - serious DMA problem\n");
686
687 snd_gf1_dma_done(gus);
688 return 0;
689 }
690
snd_gf1_pcm_capture_open(struct snd_pcm_substream * substream)691 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream)
692 {
693 struct snd_pcm_runtime *runtime = substream->runtime;
694 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
695
696 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
697 gus->pcm_cap_substream = substream;
698 substream->runtime->hw = snd_gf1_pcm_capture;
699 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
700 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
701 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
702 &hw_constraints_clocks);
703 return 0;
704 }
705
snd_gf1_pcm_capture_close(struct snd_pcm_substream * substream)706 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream)
707 {
708 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
709
710 gus->pcm_cap_substream = NULL;
711 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
712 return 0;
713 }
714
snd_gf1_pcm_volume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)715 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
716 {
717 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
718 uinfo->count = 2;
719 uinfo->value.integer.min = 0;
720 uinfo->value.integer.max = 127;
721 return 0;
722 }
723
snd_gf1_pcm_volume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)724 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
725 {
726 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
727 unsigned long flags;
728
729 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
730 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
731 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
732 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
733 return 0;
734 }
735
snd_gf1_pcm_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)736 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
737 {
738 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
739 unsigned long flags;
740 int change;
741 unsigned int idx;
742 unsigned short val1, val2, vol;
743 struct gus_pcm_private *pcmp;
744 struct snd_gus_voice *pvoice;
745
746 val1 = ucontrol->value.integer.value[0] & 127;
747 val2 = ucontrol->value.integer.value[1] & 127;
748 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
749 change = val1 != gus->gf1.pcm_volume_level_left1 ||
750 val2 != gus->gf1.pcm_volume_level_right1;
751 gus->gf1.pcm_volume_level_left1 = val1;
752 gus->gf1.pcm_volume_level_right1 = val2;
753 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
754 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
755 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
756 /* are we active? */
757 spin_lock_irqsave(&gus->voice_alloc, flags);
758 for (idx = 0; idx < 32; idx++) {
759 pvoice = &gus->gf1.voices[idx];
760 if (!pvoice->pcm)
761 continue;
762 pcmp = pvoice->private_data;
763 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
764 continue;
765 /* load real volume - better precision */
766 spin_lock(&gus->reg_lock);
767 snd_gf1_select_voice(gus, pvoice->number);
768 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
769 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
770 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
771 pcmp->final_volume = 1;
772 spin_unlock(&gus->reg_lock);
773 }
774 spin_unlock_irqrestore(&gus->voice_alloc, flags);
775 return change;
776 }
777
778 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control =
779 {
780 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
781 .name = "PCM Playback Volume",
782 .info = snd_gf1_pcm_volume_info,
783 .get = snd_gf1_pcm_volume_get,
784 .put = snd_gf1_pcm_volume_put
785 };
786
787 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
788 {
789 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
790 .name = "GPCM Playback Volume",
791 .info = snd_gf1_pcm_volume_info,
792 .get = snd_gf1_pcm_volume_get,
793 .put = snd_gf1_pcm_volume_put
794 };
795
796 static const struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
797 .open = snd_gf1_pcm_playback_open,
798 .close = snd_gf1_pcm_playback_close,
799 .hw_params = snd_gf1_pcm_playback_hw_params,
800 .hw_free = snd_gf1_pcm_playback_hw_free,
801 .prepare = snd_gf1_pcm_playback_prepare,
802 .trigger = snd_gf1_pcm_playback_trigger,
803 .pointer = snd_gf1_pcm_playback_pointer,
804 .copy = snd_gf1_pcm_playback_copy,
805 .fill_silence = snd_gf1_pcm_playback_silence,
806 };
807
808 static const struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
809 .open = snd_gf1_pcm_capture_open,
810 .close = snd_gf1_pcm_capture_close,
811 .hw_params = snd_gf1_pcm_capture_hw_params,
812 .prepare = snd_gf1_pcm_capture_prepare,
813 .trigger = snd_gf1_pcm_capture_trigger,
814 .pointer = snd_gf1_pcm_capture_pointer,
815 };
816
snd_gf1_pcm_new(struct snd_gus_card * gus,int pcm_dev,int control_index)817 int snd_gf1_pcm_new(struct snd_gus_card *gus, int pcm_dev, int control_index)
818 {
819 struct snd_card *card;
820 struct snd_kcontrol *kctl;
821 struct snd_pcm *pcm;
822 struct snd_pcm_substream *substream;
823 int capture, err;
824
825 card = gus->card;
826 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
827 err = snd_pcm_new(card,
828 gus->interwave ? "AMD InterWave" : "GF1",
829 pcm_dev,
830 gus->gf1.pcm_channels / 2,
831 capture,
832 &pcm);
833 if (err < 0)
834 return err;
835 pcm->private_data = gus;
836 /* playback setup */
837 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
838
839 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
840 snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
841 card->dev,
842 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
843
844 pcm->info_flags = 0;
845 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
846 if (capture) {
847 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
848 if (gus->gf1.dma2 == gus->gf1.dma1)
849 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
850 snd_pcm_set_managed_buffer(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
851 SNDRV_DMA_TYPE_DEV, card->dev,
852 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
853 }
854 strcpy(pcm->name, pcm->id);
855 if (gus->interwave) {
856 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
857 }
858 strcat(pcm->name, " (synth)");
859 gus->pcm = pcm;
860
861 if (gus->codec_flag)
862 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
863 else
864 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
865 kctl->id.index = control_index;
866 err = snd_ctl_add(card, kctl);
867 if (err < 0)
868 return err;
869
870 return 0;
871 }
872
873