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 /*
71 snd_printk(KERN_DEBUG "block change - offset = 0x%x, count = 0x%x\n",
72 offset, count);
73 */
74 memset(&block, 0, sizeof(block));
75 block.cmd = SNDRV_GF1_DMA_IRQ;
76 if (snd_pcm_format_unsigned(runtime->format))
77 block.cmd |= SNDRV_GF1_DMA_UNSIGNED;
78 if (snd_pcm_format_width(runtime->format) == 16)
79 block.cmd |= SNDRV_GF1_DMA_16BIT;
80 block.addr = addr & ~31;
81 block.buffer = runtime->dma_area + offset;
82 block.buf_addr = runtime->dma_addr + offset;
83 block.count = count;
84 block.private_data = pcmp;
85 block.ack = snd_gf1_pcm_block_change_ack;
86 if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0))
87 atomic_inc(&pcmp->dma_count);
88 return 0;
89 }
90
snd_gf1_pcm_trigger_up(struct snd_pcm_substream * substream)91 static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
92 {
93 struct snd_pcm_runtime *runtime = substream->runtime;
94 struct gus_pcm_private *pcmp = runtime->private_data;
95 struct snd_gus_card * gus = pcmp->gus;
96 unsigned long flags;
97 unsigned char voice_ctrl, ramp_ctrl;
98 unsigned short rate;
99 unsigned int curr, begin, end;
100 unsigned short vol;
101 unsigned char pan;
102 unsigned int voice;
103
104 spin_lock_irqsave(&pcmp->lock, flags);
105 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
106 spin_unlock_irqrestore(&pcmp->lock, flags);
107 return;
108 }
109 pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE;
110 pcmp->final_volume = 0;
111 spin_unlock_irqrestore(&pcmp->lock, flags);
112 rate = snd_gf1_translate_freq(gus, runtime->rate << 4);
113 /* enable WAVE IRQ */
114 voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20;
115 /* enable RAMP IRQ + rollover */
116 ramp_ctrl = 0x24;
117 if (pcmp->blocks == 1) {
118 voice_ctrl |= 0x08; /* loop enable */
119 ramp_ctrl &= ~0x04; /* disable rollover */
120 }
121 for (voice = 0; voice < pcmp->voices; voice++) {
122 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels);
123 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels;
124 end = curr + (pcmp->block_size / runtime->channels);
125 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1;
126 /*
127 snd_printk(KERN_DEBUG "init: curr=0x%x, begin=0x%x, end=0x%x, "
128 "ctrl=0x%x, ramp=0x%x, rate=0x%x\n",
129 curr, begin, end, voice_ctrl, ramp_ctrl, rate);
130 */
131 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
132 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
133 spin_lock_irqsave(&gus->reg_lock, flags);
134 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
135 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
136 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
137 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
138 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
139 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
140 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
141 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
142 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
143 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
144 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
145 if (!gus->gf1.enh_mode) {
146 snd_gf1_delay(gus);
147 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
148 }
149 spin_unlock_irqrestore(&gus->reg_lock, flags);
150 }
151 spin_lock_irqsave(&gus->reg_lock, flags);
152 for (voice = 0; voice < pcmp->voices; voice++) {
153 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
154 if (gus->gf1.enh_mode)
155 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00); /* deactivate voice */
156 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
157 voice_ctrl &= ~0x20;
158 }
159 voice_ctrl |= 0x20;
160 if (!gus->gf1.enh_mode) {
161 snd_gf1_delay(gus);
162 for (voice = 0; voice < pcmp->voices; voice++) {
163 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
164 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
165 voice_ctrl &= ~0x20; /* disable IRQ for next voice */
166 }
167 }
168 spin_unlock_irqrestore(&gus->reg_lock, flags);
169 }
170
snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,struct snd_gus_voice * pvoice)171 static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,
172 struct snd_gus_voice *pvoice)
173 {
174 struct gus_pcm_private * pcmp;
175 struct snd_pcm_runtime *runtime;
176 unsigned char voice_ctrl, ramp_ctrl;
177 unsigned int idx;
178 unsigned int end, step;
179
180 if (!pvoice->private_data) {
181 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
182 snd_gf1_smart_stop_voice(gus, pvoice->number);
183 return;
184 }
185 pcmp = pvoice->private_data;
186 if (pcmp == NULL) {
187 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
188 snd_gf1_smart_stop_voice(gus, pvoice->number);
189 return;
190 }
191 gus = pcmp->gus;
192 runtime = pcmp->substream->runtime;
193
194 spin_lock(&gus->reg_lock);
195 snd_gf1_select_voice(gus, pvoice->number);
196 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
197 ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
198 #if 0
199 snd_gf1_select_voice(gus, pvoice->number);
200 printk(KERN_DEBUG "position = 0x%x\n",
201 (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
202 snd_gf1_select_voice(gus, pcmp->pvoices[1]->number);
203 printk(KERN_DEBUG "position = 0x%x\n",
204 (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
205 snd_gf1_select_voice(gus, pvoice->number);
206 #endif
207 pcmp->bpos++;
208 pcmp->bpos %= pcmp->blocks;
209 if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */
210 voice_ctrl |= 0x08; /* enable loop */
211 } else {
212 ramp_ctrl |= 0x04; /* enable rollover */
213 }
214 end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
215 end -= voice_ctrl & 4 ? 2 : 1;
216 step = pcmp->dma_size / runtime->channels;
217 voice_ctrl |= 0x20;
218 if (!pcmp->final_volume) {
219 ramp_ctrl |= 0x20;
220 ramp_ctrl &= ~0x03;
221 }
222 for (idx = 0; idx < pcmp->voices; idx++, end += step) {
223 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
224 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
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 if (!gus->gf1.enh_mode) {
230 snd_gf1_delay(gus);
231 voice_ctrl |= 0x20;
232 for (idx = 0; idx < pcmp->voices; idx++) {
233 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
234 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
235 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
236 voice_ctrl &= ~0x20;
237 }
238 }
239 spin_unlock(&gus->reg_lock);
240
241 snd_pcm_period_elapsed(pcmp->substream);
242 #if 0
243 if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
244 *runtime->state == SNDRV_PCM_STATE_RUNNING) {
245 end = pcmp->bpos * pcmp->block_size;
246 if (runtime->channels > 1) {
247 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
248 snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
249 } else {
250 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
251 }
252 }
253 #endif
254 }
255
snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,struct snd_gus_voice * pvoice)256 static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,
257 struct snd_gus_voice * pvoice)
258 {
259 unsigned short vol;
260 int cvoice;
261 struct gus_pcm_private *pcmp = pvoice->private_data;
262
263 /* stop ramp, but leave rollover bit untouched */
264 spin_lock(&gus->reg_lock);
265 snd_gf1_select_voice(gus, pvoice->number);
266 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
267 spin_unlock(&gus->reg_lock);
268 if (pcmp == NULL)
269 return;
270 /* are we active? */
271 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
272 return;
273 /* load real volume - better precision */
274 cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1;
275 if (pcmp->substream == NULL)
276 return;
277 vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
278 spin_lock(&gus->reg_lock);
279 snd_gf1_select_voice(gus, pvoice->number);
280 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
281 pcmp->final_volume = 1;
282 spin_unlock(&gus->reg_lock);
283 }
284
snd_gf1_pcm_volume_change(struct snd_gus_card * gus)285 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus)
286 {
287 }
288
snd_gf1_pcm_poke_block(struct snd_gus_card * gus,unsigned char * buf,unsigned int pos,unsigned int count,int w16,int invert)289 static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
290 unsigned int pos, unsigned int count,
291 int w16, int invert)
292 {
293 unsigned int len;
294 unsigned long flags;
295
296 /*
297 printk(KERN_DEBUG
298 "poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n",
299 (int)buf, pos, count, gus->gf1.port);
300 */
301 while (count > 0) {
302 len = count;
303 if (len > 512) /* limit, to allow IRQ */
304 len = 512;
305 count -= len;
306 if (gus->interwave) {
307 spin_lock_irqsave(&gus->reg_lock, flags);
308 snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00));
309 snd_gf1_dram_addr(gus, pos);
310 if (w16) {
311 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL));
312 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1);
313 } else {
314 outsb(GUSP(gus, DRAM), buf, len);
315 }
316 spin_unlock_irqrestore(&gus->reg_lock, flags);
317 buf += 512;
318 pos += 512;
319 } else {
320 invert = invert ? 0x80 : 0x00;
321 if (w16) {
322 len >>= 1;
323 while (len--) {
324 snd_gf1_poke(gus, pos++, *buf++);
325 snd_gf1_poke(gus, pos++, *buf++ ^ invert);
326 }
327 } else {
328 while (len--)
329 snd_gf1_poke(gus, pos++, *buf++ ^ invert);
330 }
331 }
332 if (count > 0 && !in_interrupt()) {
333 schedule_timeout_interruptible(1);
334 if (signal_pending(current))
335 return -EAGAIN;
336 }
337 }
338 return 0;
339 }
340
get_bpos(struct gus_pcm_private * pcmp,int voice,unsigned int pos,unsigned int len)341 static int get_bpos(struct gus_pcm_private *pcmp, int voice, unsigned int pos,
342 unsigned int len)
343 {
344 unsigned int bpos = pos + (voice * (pcmp->dma_size / 2));
345 if (snd_BUG_ON(bpos > pcmp->dma_size))
346 return -EIO;
347 if (snd_BUG_ON(bpos + len > pcmp->dma_size))
348 return -EIO;
349 return bpos;
350 }
351
playback_copy_ack(struct snd_pcm_substream * substream,unsigned int bpos,unsigned int len)352 static int playback_copy_ack(struct snd_pcm_substream *substream,
353 unsigned int bpos, unsigned int len)
354 {
355 struct snd_pcm_runtime *runtime = substream->runtime;
356 struct gus_pcm_private *pcmp = runtime->private_data;
357 struct snd_gus_card *gus = pcmp->gus;
358 int w16, invert;
359
360 if (len > 32)
361 return snd_gf1_pcm_block_change(substream, bpos,
362 pcmp->memory + bpos, len);
363
364 w16 = (snd_pcm_format_width(runtime->format) == 16);
365 invert = snd_pcm_format_unsigned(runtime->format);
366 return snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos,
367 pcmp->memory + bpos, len, w16, invert);
368 }
369
snd_gf1_pcm_playback_copy(struct snd_pcm_substream * substream,int voice,unsigned long pos,struct iov_iter * src,unsigned long count)370 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
371 int voice, unsigned long pos,
372 struct iov_iter *src, unsigned long count)
373 {
374 struct snd_pcm_runtime *runtime = substream->runtime;
375 struct gus_pcm_private *pcmp = runtime->private_data;
376 unsigned int len = count;
377 int bpos;
378
379 bpos = get_bpos(pcmp, voice, pos, len);
380 if (bpos < 0)
381 return bpos;
382 if (copy_from_iter(runtime->dma_area + bpos, len, src) != len)
383 return -EFAULT;
384 return playback_copy_ack(substream, bpos, len);
385 }
386
snd_gf1_pcm_playback_silence(struct snd_pcm_substream * substream,int voice,unsigned long pos,unsigned long count)387 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
388 int voice, unsigned long pos,
389 unsigned long count)
390 {
391 struct snd_pcm_runtime *runtime = substream->runtime;
392 struct gus_pcm_private *pcmp = runtime->private_data;
393 unsigned int len = count;
394 int bpos;
395
396 bpos = get_bpos(pcmp, voice, pos, len);
397 if (bpos < 0)
398 return bpos;
399 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos,
400 bytes_to_samples(runtime, count));
401 return playback_copy_ack(substream, bpos, len);
402 }
403
snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)404 static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,
405 struct snd_pcm_hw_params *hw_params)
406 {
407 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
408 struct snd_pcm_runtime *runtime = substream->runtime;
409 struct gus_pcm_private *pcmp = runtime->private_data;
410
411 if (runtime->buffer_changed) {
412 struct snd_gf1_mem_block *block;
413 if (pcmp->memory > 0) {
414 snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
415 pcmp->memory = 0;
416 }
417 block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
418 SNDRV_GF1_MEM_OWNER_DRIVER,
419 "GF1 PCM",
420 runtime->dma_bytes, 1, 32,
421 NULL);
422 if (!block)
423 return -ENOMEM;
424 pcmp->memory = block->ptr;
425 }
426 pcmp->voices = params_channels(hw_params);
427 if (pcmp->pvoices[0] == NULL) {
428 pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0);
429 if (!pcmp->pvoices[0])
430 return -ENOMEM;
431 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
432 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
433 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
434 pcmp->pvoices[0]->private_data = pcmp;
435 }
436 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
437 pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0);
438 if (!pcmp->pvoices[1])
439 return -ENOMEM;
440 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
441 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
442 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
443 pcmp->pvoices[1]->private_data = pcmp;
444 } else if (pcmp->voices == 1) {
445 if (pcmp->pvoices[1]) {
446 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
447 pcmp->pvoices[1] = NULL;
448 }
449 }
450 return 0;
451 }
452
snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream * substream)453 static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream)
454 {
455 struct snd_pcm_runtime *runtime = substream->runtime;
456 struct gus_pcm_private *pcmp = runtime->private_data;
457
458 if (pcmp->pvoices[0]) {
459 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
460 pcmp->pvoices[0] = NULL;
461 }
462 if (pcmp->pvoices[1]) {
463 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
464 pcmp->pvoices[1] = NULL;
465 }
466 if (pcmp->memory > 0) {
467 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
468 pcmp->memory = 0;
469 }
470 return 0;
471 }
472
snd_gf1_pcm_playback_prepare(struct snd_pcm_substream * substream)473 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream)
474 {
475 struct snd_pcm_runtime *runtime = substream->runtime;
476 struct gus_pcm_private *pcmp = runtime->private_data;
477
478 pcmp->bpos = 0;
479 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
480 pcmp->block_size = snd_pcm_lib_period_bytes(substream);
481 pcmp->blocks = pcmp->dma_size / pcmp->block_size;
482 return 0;
483 }
484
snd_gf1_pcm_playback_trigger(struct snd_pcm_substream * substream,int cmd)485 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream,
486 int cmd)
487 {
488 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
489 struct snd_pcm_runtime *runtime = substream->runtime;
490 struct gus_pcm_private *pcmp = runtime->private_data;
491 int voice;
492
493 if (cmd == SNDRV_PCM_TRIGGER_START) {
494 snd_gf1_pcm_trigger_up(substream);
495 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
496 spin_lock(&pcmp->lock);
497 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
498 spin_unlock(&pcmp->lock);
499 voice = pcmp->pvoices[0]->number;
500 snd_gf1_stop_voices(gus, voice, voice);
501 if (pcmp->pvoices[1]) {
502 voice = pcmp->pvoices[1]->number;
503 snd_gf1_stop_voices(gus, voice, voice);
504 }
505 } else {
506 return -EINVAL;
507 }
508 return 0;
509 }
510
snd_gf1_pcm_playback_pointer(struct snd_pcm_substream * substream)511 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream)
512 {
513 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
514 struct snd_pcm_runtime *runtime = substream->runtime;
515 struct gus_pcm_private *pcmp = runtime->private_data;
516 unsigned int pos;
517 unsigned char voice_ctrl;
518
519 pos = 0;
520 spin_lock(&gus->reg_lock);
521 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
522 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
523 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
524 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
525 if (substream->runtime->channels > 1)
526 pos <<= 1;
527 pos = bytes_to_frames(runtime, pos);
528 }
529 spin_unlock(&gus->reg_lock);
530 return pos;
531 }
532
533 static const struct snd_ratnum clock = {
534 .num = 9878400/16,
535 .den_min = 2,
536 .den_max = 257,
537 .den_step = 1,
538 };
539
540 static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
541 .nrats = 1,
542 .rats = &clock,
543 };
544
snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)545 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream,
546 struct snd_pcm_hw_params *hw_params)
547 {
548 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
549
550 gus->c_dma_size = params_buffer_bytes(hw_params);
551 gus->c_period_size = params_period_bytes(hw_params);
552 gus->c_pos = 0;
553 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */
554 if (params_channels(hw_params) > 1)
555 gus->gf1.pcm_rcntrl_reg |= 2;
556 if (gus->gf1.dma2 > 3)
557 gus->gf1.pcm_rcntrl_reg |= 4;
558 if (snd_pcm_format_unsigned(params_format(hw_params)))
559 gus->gf1.pcm_rcntrl_reg |= 0x80;
560 return 0;
561 }
562
snd_gf1_pcm_capture_prepare(struct snd_pcm_substream * substream)563 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream)
564 {
565 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
566 struct snd_pcm_runtime *runtime = substream->runtime;
567
568 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
569 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
570 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
571 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
572 return 0;
573 }
574
snd_gf1_pcm_capture_trigger(struct snd_pcm_substream * substream,int cmd)575 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream,
576 int cmd)
577 {
578 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
579 int val;
580
581 if (cmd == SNDRV_PCM_TRIGGER_START) {
582 val = gus->gf1.pcm_rcntrl_reg;
583 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
584 val = 0;
585 } else {
586 return -EINVAL;
587 }
588
589 spin_lock(&gus->reg_lock);
590 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
591 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
592 spin_unlock(&gus->reg_lock);
593 return 0;
594 }
595
snd_gf1_pcm_capture_pointer(struct snd_pcm_substream * substream)596 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream)
597 {
598 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
599 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
600 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
601 return pos;
602 }
603
snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)604 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)
605 {
606 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
607 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
608 if (gus->pcm_cap_substream != NULL) {
609 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream);
610 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
611 gus->c_pos += gus->c_period_size;
612 snd_pcm_period_elapsed(gus->pcm_cap_substream);
613 }
614 }
615
616 static const struct snd_pcm_hardware snd_gf1_pcm_playback =
617 {
618 .info = SNDRV_PCM_INFO_NONINTERLEAVED,
619 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
620 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
621 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
622 .rate_min = 5510,
623 .rate_max = 48000,
624 .channels_min = 1,
625 .channels_max = 2,
626 .buffer_bytes_max = (128*1024),
627 .period_bytes_min = 64,
628 .period_bytes_max = (128*1024),
629 .periods_min = 1,
630 .periods_max = 1024,
631 .fifo_size = 0,
632 };
633
634 static const struct snd_pcm_hardware snd_gf1_pcm_capture =
635 {
636 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
637 SNDRV_PCM_INFO_MMAP_VALID),
638 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
639 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
640 .rate_min = 5510,
641 .rate_max = 44100,
642 .channels_min = 1,
643 .channels_max = 2,
644 .buffer_bytes_max = (128*1024),
645 .period_bytes_min = 64,
646 .period_bytes_max = (128*1024),
647 .periods_min = 1,
648 .periods_max = 1024,
649 .fifo_size = 0,
650 };
651
snd_gf1_pcm_playback_free(struct snd_pcm_runtime * runtime)652 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime)
653 {
654 kfree(runtime->private_data);
655 }
656
snd_gf1_pcm_playback_open(struct snd_pcm_substream * substream)657 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream)
658 {
659 struct gus_pcm_private *pcmp;
660 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
661 struct snd_pcm_runtime *runtime = substream->runtime;
662 int err;
663
664 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
665 if (pcmp == NULL)
666 return -ENOMEM;
667 pcmp->gus = gus;
668 spin_lock_init(&pcmp->lock);
669 init_waitqueue_head(&pcmp->sleep);
670 atomic_set(&pcmp->dma_count, 0);
671
672 runtime->private_data = pcmp;
673 runtime->private_free = snd_gf1_pcm_playback_free;
674
675 #if 0
676 printk(KERN_DEBUG "playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n",
677 (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
678 #endif
679 err = snd_gf1_dma_init(gus);
680 if (err < 0)
681 return err;
682 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
683 pcmp->substream = substream;
684 runtime->hw = snd_gf1_pcm_playback;
685 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
686 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
687 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
688 return 0;
689 }
690
snd_gf1_pcm_playback_close(struct snd_pcm_substream * substream)691 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream)
692 {
693 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
694 struct snd_pcm_runtime *runtime = substream->runtime;
695 struct gus_pcm_private *pcmp = runtime->private_data;
696
697 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
698 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n");
699
700 snd_gf1_dma_done(gus);
701 return 0;
702 }
703
snd_gf1_pcm_capture_open(struct snd_pcm_substream * substream)704 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream)
705 {
706 struct snd_pcm_runtime *runtime = substream->runtime;
707 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
708
709 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
710 gus->pcm_cap_substream = substream;
711 substream->runtime->hw = snd_gf1_pcm_capture;
712 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
713 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
714 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
715 &hw_constraints_clocks);
716 return 0;
717 }
718
snd_gf1_pcm_capture_close(struct snd_pcm_substream * substream)719 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream)
720 {
721 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
722
723 gus->pcm_cap_substream = NULL;
724 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
725 return 0;
726 }
727
snd_gf1_pcm_volume_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)728 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
729 {
730 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
731 uinfo->count = 2;
732 uinfo->value.integer.min = 0;
733 uinfo->value.integer.max = 127;
734 return 0;
735 }
736
snd_gf1_pcm_volume_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)737 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
738 {
739 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
740 unsigned long flags;
741
742 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
743 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
744 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
745 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
746 return 0;
747 }
748
snd_gf1_pcm_volume_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)749 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
750 {
751 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
752 unsigned long flags;
753 int change;
754 unsigned int idx;
755 unsigned short val1, val2, vol;
756 struct gus_pcm_private *pcmp;
757 struct snd_gus_voice *pvoice;
758
759 val1 = ucontrol->value.integer.value[0] & 127;
760 val2 = ucontrol->value.integer.value[1] & 127;
761 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
762 change = val1 != gus->gf1.pcm_volume_level_left1 ||
763 val2 != gus->gf1.pcm_volume_level_right1;
764 gus->gf1.pcm_volume_level_left1 = val1;
765 gus->gf1.pcm_volume_level_right1 = val2;
766 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
767 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
768 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
769 /* are we active? */
770 spin_lock_irqsave(&gus->voice_alloc, flags);
771 for (idx = 0; idx < 32; idx++) {
772 pvoice = &gus->gf1.voices[idx];
773 if (!pvoice->pcm)
774 continue;
775 pcmp = pvoice->private_data;
776 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
777 continue;
778 /* load real volume - better precision */
779 spin_lock(&gus->reg_lock);
780 snd_gf1_select_voice(gus, pvoice->number);
781 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
782 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
783 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
784 pcmp->final_volume = 1;
785 spin_unlock(&gus->reg_lock);
786 }
787 spin_unlock_irqrestore(&gus->voice_alloc, flags);
788 return change;
789 }
790
791 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control =
792 {
793 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
794 .name = "PCM Playback Volume",
795 .info = snd_gf1_pcm_volume_info,
796 .get = snd_gf1_pcm_volume_get,
797 .put = snd_gf1_pcm_volume_put
798 };
799
800 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
801 {
802 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
803 .name = "GPCM Playback Volume",
804 .info = snd_gf1_pcm_volume_info,
805 .get = snd_gf1_pcm_volume_get,
806 .put = snd_gf1_pcm_volume_put
807 };
808
809 static const struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
810 .open = snd_gf1_pcm_playback_open,
811 .close = snd_gf1_pcm_playback_close,
812 .hw_params = snd_gf1_pcm_playback_hw_params,
813 .hw_free = snd_gf1_pcm_playback_hw_free,
814 .prepare = snd_gf1_pcm_playback_prepare,
815 .trigger = snd_gf1_pcm_playback_trigger,
816 .pointer = snd_gf1_pcm_playback_pointer,
817 .copy = snd_gf1_pcm_playback_copy,
818 .fill_silence = snd_gf1_pcm_playback_silence,
819 };
820
821 static const struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
822 .open = snd_gf1_pcm_capture_open,
823 .close = snd_gf1_pcm_capture_close,
824 .hw_params = snd_gf1_pcm_capture_hw_params,
825 .prepare = snd_gf1_pcm_capture_prepare,
826 .trigger = snd_gf1_pcm_capture_trigger,
827 .pointer = snd_gf1_pcm_capture_pointer,
828 };
829
snd_gf1_pcm_new(struct snd_gus_card * gus,int pcm_dev,int control_index)830 int snd_gf1_pcm_new(struct snd_gus_card *gus, int pcm_dev, int control_index)
831 {
832 struct snd_card *card;
833 struct snd_kcontrol *kctl;
834 struct snd_pcm *pcm;
835 struct snd_pcm_substream *substream;
836 int capture, err;
837
838 card = gus->card;
839 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
840 err = snd_pcm_new(card,
841 gus->interwave ? "AMD InterWave" : "GF1",
842 pcm_dev,
843 gus->gf1.pcm_channels / 2,
844 capture,
845 &pcm);
846 if (err < 0)
847 return err;
848 pcm->private_data = gus;
849 /* playback setup */
850 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
851
852 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
853 snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
854 card->dev,
855 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
856
857 pcm->info_flags = 0;
858 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
859 if (capture) {
860 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
861 if (gus->gf1.dma2 == gus->gf1.dma1)
862 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
863 snd_pcm_set_managed_buffer(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
864 SNDRV_DMA_TYPE_DEV, card->dev,
865 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
866 }
867 strcpy(pcm->name, pcm->id);
868 if (gus->interwave) {
869 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
870 }
871 strcat(pcm->name, " (synth)");
872 gus->pcm = pcm;
873
874 if (gus->codec_flag)
875 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
876 else
877 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
878 kctl->id.index = control_index;
879 err = snd_ctl_add(card, kctl);
880 if (err < 0)
881 return err;
882
883 return 0;
884 }
885
886