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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
[linux-block.git] / sound / isa / gus / gus_pcm.c
CommitLineData
1a59d1b8 1// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 2/*
c1017a4c 3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
1da177e4
LT		 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.
1da177e4
LT		 11 */
12
1da177e4
LT		 13#include <asm/dma.h>
14#include <linux/slab.h>
174cd4b1
IM		 15#include <linux/sched/signal.h>
16
1da177e4
LT		 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
5e2da206
TI		 31struct gus_pcm_private {
32 struct snd_gus_card * gus;
33 struct snd_pcm_substream *substream;
1da177e4
LT		 34 spinlock_t lock;
35 unsigned int voices;
5e2da206 36 struct snd_gus_voice *pvoices[2];
1da177e4
LT		 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;
5e2da206 47};
1da177e4 48
5e2da206 49static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data)
1da177e4 50{
5e2da206 51 struct gus_pcm_private *pcmp = private_data;
1da177e4
LT		 52
53 if (pcmp) {
54 atomic_dec(&pcmp->dma_count);
55 wake_up(&pcmp->sleep);
56 }
57}
58
5e2da206 59static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream,
1da177e4
LT		 60 unsigned int offset,
61 unsigned int addr,
62 unsigned int count)
63{
5e2da206
TI		 64 struct snd_gf1_dma_block block;
65 struct snd_pcm_runtime *runtime = substream->runtime;
66 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 67
68 count += offset & 31;
69 offset &= ~31;
91f05060
TI		 70 /*
71 snd_printk(KERN_DEBUG "block change - offset = 0x%x, count = 0x%x\n",
72 offset, count);
73 */
1da177e4
LT		 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
5e2da206 91static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
1da177e4 92{
5e2da206
TI		 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;
1da177e4
LT		 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
1da177e4
LT		 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;
91f05060
TI		 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 */
1da177e4
LT		 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
5e2da206
TI		 171static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,
172 struct snd_gus_voice *pvoice)
1da177e4 173{
5e2da206
TI		 174 struct gus_pcm_private * pcmp;
175 struct snd_pcm_runtime *runtime;
1da177e4
LT		 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);
91f05060
TI		 200 printk(KERN_DEBUG "position = 0x%x\n",
201 (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
1da177e4 202 snd_gf1_select_voice(gus, pcmp->pvoices[1]->number);
91f05060
TI		 203 printk(KERN_DEBUG "position = 0x%x\n",
204 (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
1da177e4
LT		 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
5e2da206
TI		 256static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,
257 struct snd_gus_voice * pvoice)
1da177e4
LT		 258{
259 unsigned short vol;
260 int cvoice;
5e2da206 261 struct gus_pcm_private *pcmp = pvoice->private_data;
1da177e4
LT		 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
5e2da206 285static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus)
1da177e4
LT		 286{
287}
288
5e2da206 289static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
1da177e4
LT		 290 unsigned int pos, unsigned int count,
291 int w16, int invert)
292{
293 unsigned int len;
294 unsigned long flags;
295
91f05060
TI		 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 */
1da177e4
LT		 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()) {
8433a509 333 schedule_timeout_interruptible(1);
1da177e4
LT		 334 if (signal_pending(current))
335 return -EAGAIN;
336 }
337 }
338 return 0;
339}
340
a6970bb1
TI		 341static int get_bpos(struct gus_pcm_private *pcmp, int voice, unsigned int pos,
342 unsigned int len)
1da177e4 343{
a6970bb1 344 unsigned int bpos = pos + (voice * (pcmp->dma_size / 2));
622207dc
TI		 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;
a6970bb1
TI		 349 return bpos;
350}
351
352static 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
097a7fe3
TS		 360 if (len > 32)
361 return snd_gf1_pcm_block_change(substream, bpos,
362 pcmp->memory + bpos, len);
1da177e4 363
097a7fe3
TS		 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);
1da177e4
LT		 368}
369
a6970bb1
TI		 370static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
371 int voice, unsigned long pos,
372 void __user *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 pos;
382 if (copy_from_user(runtime->dma_area + bpos, src, len))
383 return -EFAULT;
384 return playback_copy_ack(substream, bpos, len);
385}
386
387static int snd_gf1_pcm_playback_copy_kernel(struct snd_pcm_substream *substream,
388 int voice, unsigned long pos,
389 void *src, 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 pos;
399 memcpy(runtime->dma_area + bpos, src, len);
400 return playback_copy_ack(substream, bpos, len);
401}
402
5e2da206 403static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
a6970bb1
TI		 404 int voice, unsigned long pos,
405 unsigned long count)
1da177e4 406{
5e2da206
TI		 407 struct snd_pcm_runtime *runtime = substream->runtime;
408 struct gus_pcm_private *pcmp = runtime->private_data;
a6970bb1
TI		 409 unsigned int len = count;
410 int bpos;
1da177e4 411
a6970bb1
TI		 412 bpos = get_bpos(pcmp, voice, pos, len);
413 if (bpos < 0)
414 return pos;
097a7fe3 415 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos,
a6970bb1
TI		 416 bytes_to_samples(runtime, count));
417 return playback_copy_ack(substream, bpos, len);
1da177e4
LT		 418}
419
5e2da206
TI		 420static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,
421 struct snd_pcm_hw_params *hw_params)
1da177e4 422{
5e2da206
TI		 423 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
424 struct snd_pcm_runtime *runtime = substream->runtime;
425 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 426 int err;
427
428 if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
429 return err;
430 if (err > 0) { /* change */
5e2da206 431 struct snd_gf1_mem_block *block;
1da177e4
LT		 432 if (pcmp->memory > 0) {
433 snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
434 pcmp->memory = 0;
435 }
436 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
437 SNDRV_GF1_MEM_OWNER_DRIVER,
438 "GF1 PCM",
439 runtime->dma_bytes, 1, 32,
440 NULL)) == NULL)
441 return -ENOMEM;
442 pcmp->memory = block->ptr;
443 }
444 pcmp->voices = params_channels(hw_params);
445 if (pcmp->pvoices[0] == NULL) {
446 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
447 return -ENOMEM;
448 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
449 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
450 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
451 pcmp->pvoices[0]->private_data = pcmp;
452 }
453 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
454 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
455 return -ENOMEM;
456 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
457 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
458 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
459 pcmp->pvoices[1]->private_data = pcmp;
460 } else if (pcmp->voices == 1) {
461 if (pcmp->pvoices[1]) {
462 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
463 pcmp->pvoices[1] = NULL;
464 }
465 }
466 return 0;
467}
468
5e2da206 469static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream)
1da177e4 470{
5e2da206
TI		 471 struct snd_pcm_runtime *runtime = substream->runtime;
472 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 473
474 snd_pcm_lib_free_pages(substream);
475 if (pcmp->pvoices[0]) {
476 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
477 pcmp->pvoices[0] = NULL;
478 }
479 if (pcmp->pvoices[1]) {
480 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
481 pcmp->pvoices[1] = NULL;
482 }
483 if (pcmp->memory > 0) {
484 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
485 pcmp->memory = 0;
486 }
487 return 0;
488}
489
5e2da206 490static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream)
1da177e4 491{
5e2da206
TI		 492 struct snd_pcm_runtime *runtime = substream->runtime;
493 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 494
495 pcmp->bpos = 0;
496 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
497 pcmp->block_size = snd_pcm_lib_period_bytes(substream);
498 pcmp->blocks = pcmp->dma_size / pcmp->block_size;
499 return 0;
500}
501
5e2da206 502static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream,
1da177e4
LT		 503 int cmd)
504{
5e2da206
TI		 505 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
506 struct snd_pcm_runtime *runtime = substream->runtime;
507 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 508 int voice;
509
510 if (cmd == SNDRV_PCM_TRIGGER_START) {
511 snd_gf1_pcm_trigger_up(substream);
512 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
513 spin_lock(&pcmp->lock);
514 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
515 spin_unlock(&pcmp->lock);
516 voice = pcmp->pvoices[0]->number;
517 snd_gf1_stop_voices(gus, voice, voice);
518 if (pcmp->pvoices[1]) {
519 voice = pcmp->pvoices[1]->number;
520 snd_gf1_stop_voices(gus, voice, voice);
521 }
522 } else {
523 return -EINVAL;
524 }
525 return 0;
526}
527
5e2da206 528static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream)
1da177e4 529{
5e2da206
TI		 530 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
531 struct snd_pcm_runtime *runtime = substream->runtime;
532 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 533 unsigned int pos;
534 unsigned char voice_ctrl;
535
536 pos = 0;
537 spin_lock(&gus->reg_lock);
538 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
539 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
540 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
541 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
542 if (substream->runtime->channels > 1)
543 pos <<= 1;
544 pos = bytes_to_frames(runtime, pos);
545 }
546 spin_unlock(&gus->reg_lock);
547 return pos;
548}
549
bfa516a1 550static const struct snd_ratnum clock = {
1da177e4
LT		 551 .num = 9878400/16,
552 .den_min = 2,
553 .den_max = 257,
554 .den_step = 1,
555};
556
bfa516a1 557static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
1da177e4
LT		 558 .nrats = 1,
559 .rats = &clock,
560};
561
5e2da206
TI		 562static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream,
563 struct snd_pcm_hw_params *hw_params)
1da177e4 564{
5e2da206 565 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
1da177e4
LT		 566
567 gus->c_dma_size = params_buffer_bytes(hw_params);
568 gus->c_period_size = params_period_bytes(hw_params);
569 gus->c_pos = 0;
570 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */
571 if (params_channels(hw_params) > 1)
572 gus->gf1.pcm_rcntrl_reg |= 2;
573 if (gus->gf1.dma2 > 3)
574 gus->gf1.pcm_rcntrl_reg |= 4;
575 if (snd_pcm_format_unsigned(params_format(hw_params)))
576 gus->gf1.pcm_rcntrl_reg |= 0x80;
577 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
578}
579
5e2da206 580static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream)
1da177e4
LT		 581{
582 return snd_pcm_lib_free_pages(substream);
583}
584
5e2da206 585static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream)
1da177e4 586{
5e2da206
TI		 587 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
588 struct snd_pcm_runtime *runtime = substream->runtime;
1da177e4
LT		 589
590 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
591 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
592 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
593 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
594 return 0;
595}
596
5e2da206 597static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream,
1da177e4
LT		 598 int cmd)
599{
5e2da206 600 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
1da177e4
LT		 601 int val;
602
603 if (cmd == SNDRV_PCM_TRIGGER_START) {
604 val = gus->gf1.pcm_rcntrl_reg;
605 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
606 val = 0;
607 } else {
608 return -EINVAL;
609 }
610
611 spin_lock(&gus->reg_lock);
612 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
613 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
614 spin_unlock(&gus->reg_lock);
615 return 0;
616}
617
5e2da206 618static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream)
1da177e4 619{
5e2da206 620 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
1da177e4
LT		 621 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
622 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
623 return pos;
624}
625
5e2da206 626static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)
1da177e4
LT		 627{
628 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
629 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
630 if (gus->pcm_cap_substream != NULL) {
631 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream);
632 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
633 gus->c_pos += gus->c_period_size;
634 snd_pcm_period_elapsed(gus->pcm_cap_substream);
635 }
636}
637
aec54654 638static const struct snd_pcm_hardware snd_gf1_pcm_playback =
1da177e4
LT		 639{
640 .info = SNDRV_PCM_INFO_NONINTERLEAVED,
641 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
642 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
643 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
644 .rate_min = 5510,
645 .rate_max = 48000,
646 .channels_min = 1,
647 .channels_max = 2,
648 .buffer_bytes_max = (128*1024),
649 .period_bytes_min = 64,
650 .period_bytes_max = (128*1024),
651 .periods_min = 1,
652 .periods_max = 1024,
653 .fifo_size = 0,
654};
655
aec54654 656static const struct snd_pcm_hardware snd_gf1_pcm_capture =
1da177e4
LT		 657{
658 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
659 SNDRV_PCM_INFO_MMAP_VALID),
660 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
661 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
662 .rate_min = 5510,
663 .rate_max = 44100,
664 .channels_min = 1,
665 .channels_max = 2,
666 .buffer_bytes_max = (128*1024),
667 .period_bytes_min = 64,
668 .period_bytes_max = (128*1024),
669 .periods_min = 1,
670 .periods_max = 1024,
671 .fifo_size = 0,
672};
673
5e2da206 674static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime)
1da177e4 675{
4d572776 676 kfree(runtime->private_data);
1da177e4
LT		 677}
678
5e2da206 679static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream)
1da177e4 680{
5e2da206
TI		 681 struct gus_pcm_private *pcmp;
682 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
683 struct snd_pcm_runtime *runtime = substream->runtime;
1da177e4
LT		 684 int err;
685
9e76a76e 686 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
1da177e4
LT		 687 if (pcmp == NULL)
688 return -ENOMEM;
689 pcmp->gus = gus;
690 spin_lock_init(&pcmp->lock);
691 init_waitqueue_head(&pcmp->sleep);
692 atomic_set(&pcmp->dma_count, 0);
693
694 runtime->private_data = pcmp;
695 runtime->private_free = snd_gf1_pcm_playback_free;
696
697#if 0
91f05060
TI		 698 printk(KERN_DEBUG "playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n",
699 (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
1da177e4
LT		 700#endif
701 if ((err = snd_gf1_dma_init(gus)) < 0)
702 return err;
703 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
704 pcmp->substream = substream;
705 runtime->hw = snd_gf1_pcm_playback;
706 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
707 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
708 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
709 return 0;
710}
711
5e2da206 712static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream)
1da177e4 713{
5e2da206
TI		 714 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
715 struct snd_pcm_runtime *runtime = substream->runtime;
716 struct gus_pcm_private *pcmp = runtime->private_data;
1da177e4
LT		 717
718 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
99b359ba 719 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n");
1da177e4
LT		 720
721 snd_gf1_dma_done(gus);
722 return 0;
723}
724
5e2da206 725static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream)
1da177e4 726{
5e2da206
TI		 727 struct snd_pcm_runtime *runtime = substream->runtime;
728 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
1da177e4
LT		 729
730 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
731 gus->pcm_cap_substream = substream;
732 substream->runtime->hw = snd_gf1_pcm_capture;
733 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
734 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
735 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
736 &hw_constraints_clocks);
737 return 0;
738}
739
5e2da206 740static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream)
1da177e4 741{
5e2da206 742 struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
1da177e4
LT		 743
744 gus->pcm_cap_substream = NULL;
745 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
746 return 0;
747}
748
5e2da206 749static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1da177e4
LT		 750{
751 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
752 uinfo->count = 2;
753 uinfo->value.integer.min = 0;
754 uinfo->value.integer.max = 127;
755 return 0;
756}
757
5e2da206 758static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 759{
5e2da206 760 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 761 unsigned long flags;
762
763 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
764 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
765 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
766 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
767 return 0;
768}
769
5e2da206 770static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1da177e4 771{
5e2da206 772 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
1da177e4
LT		 773 unsigned long flags;
774 int change;
775 unsigned int idx;
776 unsigned short val1, val2, vol;
5e2da206
TI		 777 struct gus_pcm_private *pcmp;
778 struct snd_gus_voice *pvoice;
1da177e4
LT		 779
780 val1 = ucontrol->value.integer.value[0] & 127;
781 val2 = ucontrol->value.integer.value[1] & 127;
782 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
783 change = val1 != gus->gf1.pcm_volume_level_left1 ||
784 val2 != gus->gf1.pcm_volume_level_right1;
785 gus->gf1.pcm_volume_level_left1 = val1;
786 gus->gf1.pcm_volume_level_right1 = val2;
787 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
788 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
789 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
790 /* are we active? */
791 spin_lock_irqsave(&gus->voice_alloc, flags);
792 for (idx = 0; idx < 32; idx++) {
793 pvoice = &gus->gf1.voices[idx];
794 if (!pvoice->pcm)
795 continue;
796 pcmp = pvoice->private_data;
797 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
798 continue;
799 /* load real volume - better precision */
fcb2954b 800 spin_lock(&gus->reg_lock);
1da177e4
LT		 801 snd_gf1_select_voice(gus, pvoice->number);
802 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
803 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
804 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
805 pcmp->final_volume = 1;
fcb2954b 806 spin_unlock(&gus->reg_lock);
1da177e4
LT		 807 }
808 spin_unlock_irqrestore(&gus->voice_alloc, flags);
809 return change;
810}
811
3a84d6c9 812static const struct snd_kcontrol_new snd_gf1_pcm_volume_control =
1da177e4
LT		 813{
814 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
815 .name = "PCM Playback Volume",
816 .info = snd_gf1_pcm_volume_info,
817 .get = snd_gf1_pcm_volume_get,
818 .put = snd_gf1_pcm_volume_put
819};
820
3a84d6c9 821static const struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
1da177e4
LT		 822{
823 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
824 .name = "GPCM Playback Volume",
825 .info = snd_gf1_pcm_volume_info,
826 .get = snd_gf1_pcm_volume_get,
827 .put = snd_gf1_pcm_volume_put
828};
829
ca58ba6c 830static const struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
1da177e4
LT		 831 .open = snd_gf1_pcm_playback_open,
832 .close = snd_gf1_pcm_playback_close,
833 .ioctl = snd_pcm_lib_ioctl,
834 .hw_params = snd_gf1_pcm_playback_hw_params,
835 .hw_free = snd_gf1_pcm_playback_hw_free,
836 .prepare = snd_gf1_pcm_playback_prepare,
837 .trigger = snd_gf1_pcm_playback_trigger,
838 .pointer = snd_gf1_pcm_playback_pointer,
a6970bb1
TI		 839 .copy_user = snd_gf1_pcm_playback_copy,
840 .copy_kernel = snd_gf1_pcm_playback_copy_kernel,
841 .fill_silence = snd_gf1_pcm_playback_silence,
1da177e4
LT		 842};
843
ca58ba6c 844static const struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
1da177e4
LT		 845 .open = snd_gf1_pcm_capture_open,
846 .close = snd_gf1_pcm_capture_close,
847 .ioctl = snd_pcm_lib_ioctl,
848 .hw_params = snd_gf1_pcm_capture_hw_params,
849 .hw_free = snd_gf1_pcm_capture_hw_free,
850 .prepare = snd_gf1_pcm_capture_prepare,
851 .trigger = snd_gf1_pcm_capture_trigger,
852 .pointer = snd_gf1_pcm_capture_pointer,
853};
854
db5abb3c 855int snd_gf1_pcm_new(struct snd_gus_card *gus, int pcm_dev, int control_index)
1da177e4 856{
5e2da206
TI		 857 struct snd_card *card;
858 struct snd_kcontrol *kctl;
859 struct snd_pcm *pcm;
860 struct snd_pcm_substream *substream;
1da177e4
LT		 861 int capture, err;
862
1da177e4
LT		 863 card = gus->card;
864 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
865 err = snd_pcm_new(card,
866 gus->interwave ? "AMD InterWave" : "GF1",
867 pcm_dev,
868 gus->gf1.pcm_channels / 2,
869 capture,
870 &pcm);
871 if (err < 0)
872 return err;
873 pcm->private_data = gus;
1da177e4
LT		 874 /* playback setup */
875 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
876
877 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
878 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
0b6a2c9c 879 card->dev,
1da177e4
LT		 880 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
881
882 pcm->info_flags = 0;
883 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
884 if (capture) {
885 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
886 if (gus->gf1.dma2 == gus->gf1.dma1)
887 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
888 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
0b6a2c9c 889 SNDRV_DMA_TYPE_DEV, card->dev,
1da177e4
LT		 890 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
891 }
892 strcpy(pcm->name, pcm->id);
893 if (gus->interwave) {
894 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
895 }
896 strcat(pcm->name, " (synth)");
897 gus->pcm = pcm;
898
899 if (gus->codec_flag)
900 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
901 else
902 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
903 if ((err = snd_ctl_add(card, kctl)) < 0)
904 return err;
905 kctl->id.index = control_index;
906
1da177e4
LT		 907 return 0;
908}
909
Linux 6.x block layer and io_uring tree(s)