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 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 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 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 } 161 162 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 } 246 247 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 } 275 276 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus) 277 { 278 } 279 280 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 } 326 327 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 } 337 338 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 } 355 356 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 } 372 373 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 } 389 390 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 } 438 439 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 } 458 459 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 } 470 471 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 } 496 497 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 }; 530 531 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 } 548 549 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 } 560 561 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 } 581 582 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 } 589 590 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 }; 637 638 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime) 639 { 640 kfree(runtime->private_data); 641 } 642 643 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 } 677 678 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 } 690 691 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 } 705 706 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 } 714 715 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 } 723 724 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 } 735 736 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 }; 816 817 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