1/* 2 * Copyright (c) by Jaroslav Kysela <perex@perex.cz> 3 * Routines for control of GF1 chip (PCM things) 4 * 5 * InterWave chips supports interleaved DMA, but this feature isn't used in 6 * this code. 7 * 8 * This code emulates autoinit DMA transfer for playback, recording by GF1 9 * chip doesn't support autoinit DMA. 10 * 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 * 26 */ 27 28#include <asm/dma.h> 29#include <linux/slab.h> 30#include <sound/core.h> 31#include <sound/control.h> 32#include <sound/gus.h> 33#include <sound/pcm_params.h> 34#include "gus_tables.h" 35 36/* maximum rate */ 37 38#define SNDRV_GF1_PCM_RATE 48000 39 40#define SNDRV_GF1_PCM_PFLG_NONE 0 41#define SNDRV_GF1_PCM_PFLG_ACTIVE (1<<0) 42#define SNDRV_GF1_PCM_PFLG_NEUTRAL (2<<0) 43 44struct gus_pcm_private { 45 struct snd_gus_card * gus; 46 struct snd_pcm_substream *substream; 47 spinlock_t lock; 48 unsigned int voices; 49 struct snd_gus_voice *pvoices[2]; 50 unsigned int memory; 51 unsigned short flags; 52 unsigned char voice_ctrl, ramp_ctrl; 53 unsigned int bpos; 54 unsigned int blocks; 55 unsigned int block_size; 56 unsigned int dma_size; 57 wait_queue_head_t sleep; 58 atomic_t dma_count; 59 int final_volume; 60}; 61 62static int snd_gf1_pcm_use_dma = 1; 63 64static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data) 65{ 66 struct gus_pcm_private *pcmp = private_data; 67 68 if (pcmp) { 69 atomic_dec(&pcmp->dma_count); 70 wake_up(&pcmp->sleep); 71 } 72} 73 74static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream, 75 unsigned int offset, 76 unsigned int addr, 77 unsigned int count) 78{ 79 struct snd_gf1_dma_block block; 80 struct snd_pcm_runtime *runtime = substream->runtime; 81 struct gus_pcm_private *pcmp = runtime->private_data; 82 83 count += offset & 31; 84 offset &= ~31; 85 /* 86 snd_printk(KERN_DEBUG "block change - offset = 0x%x, count = 0x%x\n", 87 offset, count); 88 */ 89 memset(&block, 0, sizeof(block)); 90 block.cmd = SNDRV_GF1_DMA_IRQ; 91 if (snd_pcm_format_unsigned(runtime->format)) 92 block.cmd |= SNDRV_GF1_DMA_UNSIGNED; 93 if (snd_pcm_format_width(runtime->format) == 16) 94 block.cmd |= SNDRV_GF1_DMA_16BIT; 95 block.addr = addr & ~31; 96 block.buffer = runtime->dma_area + offset; 97 block.buf_addr = runtime->dma_addr + offset; 98 block.count = count; 99 block.private_data = pcmp; 100 block.ack = snd_gf1_pcm_block_change_ack; 101 if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0)) 102 atomic_inc(&pcmp->dma_count); 103 return 0; 104} 105 106static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream) 107{ 108 struct snd_pcm_runtime *runtime = substream->runtime; 109 struct gus_pcm_private *pcmp = runtime->private_data; 110 struct snd_gus_card * gus = pcmp->gus; 111 unsigned long flags; 112 unsigned char voice_ctrl, ramp_ctrl; 113 unsigned short rate; 114 unsigned int curr, begin, end; 115 unsigned short vol; 116 unsigned char pan; 117 unsigned int voice; 118 119 spin_lock_irqsave(&pcmp->lock, flags); 120 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) { 121 spin_unlock_irqrestore(&pcmp->lock, flags); 122 return; 123 } 124 pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE; 125 pcmp->final_volume = 0; 126 spin_unlock_irqrestore(&pcmp->lock, flags); 127 rate = snd_gf1_translate_freq(gus, runtime->rate << 4); 128 /* enable WAVE IRQ */ 129 voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20; 130 /* enable RAMP IRQ + rollover */ 131 ramp_ctrl = 0x24; 132 if (pcmp->blocks == 1) { 133 voice_ctrl |= 0x08; /* loop enable */ 134 ramp_ctrl &= ~0x04; /* disable rollover */ 135 } 136 for (voice = 0; voice < pcmp->voices; voice++) { 137 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels); 138 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels; 139 end = curr + (pcmp->block_size / runtime->channels); 140 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1; 141 /* 142 snd_printk(KERN_DEBUG "init: curr=0x%x, begin=0x%x, end=0x%x, " 143 "ctrl=0x%x, ramp=0x%x, rate=0x%x\n", 144 curr, begin, end, voice_ctrl, ramp_ctrl, rate); 145 */ 146 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8; 147 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 148 spin_lock_irqsave(&gus->reg_lock, flags); 149 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 150 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan); 151 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate); 152 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4); 153 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); 154 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4); 155 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4); 156 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f); 157 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); 158 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8); 159 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 160 if (!gus->gf1.enh_mode) { 161 snd_gf1_delay(gus); 162 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 163 } 164 spin_unlock_irqrestore(&gus->reg_lock, flags); 165 } 166 spin_lock_irqsave(&gus->reg_lock, flags); 167 for (voice = 0; voice < pcmp->voices; voice++) { 168 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 169 if (gus->gf1.enh_mode) 170 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00); /* deactivate voice */ 171 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 172 voice_ctrl &= ~0x20; 173 } 174 voice_ctrl |= 0x20; 175 if (!gus->gf1.enh_mode) { 176 snd_gf1_delay(gus); 177 for (voice = 0; voice < pcmp->voices; voice++) { 178 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 179 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 180 voice_ctrl &= ~0x20; /* disable IRQ for next voice */ 181 } 182 } 183 spin_unlock_irqrestore(&gus->reg_lock, flags); 184} 185 186static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus, 187 struct snd_gus_voice *pvoice) 188{ 189 struct gus_pcm_private * pcmp; 190 struct snd_pcm_runtime *runtime; 191 unsigned char voice_ctrl, ramp_ctrl; 192 unsigned int idx; 193 unsigned int end, step; 194 195 if (!pvoice->private_data) { 196 snd_printd("snd_gf1_pcm: unknown wave irq?\n"); 197 snd_gf1_smart_stop_voice(gus, pvoice->number); 198 return; 199 } 200 pcmp = pvoice->private_data; 201 if (pcmp == NULL) { 202 snd_printd("snd_gf1_pcm: unknown wave irq?\n"); 203 snd_gf1_smart_stop_voice(gus, pvoice->number); 204 return; 205 } 206 gus = pcmp->gus; 207 runtime = pcmp->substream->runtime; 208 209 spin_lock(&gus->reg_lock); 210 snd_gf1_select_voice(gus, pvoice->number); 211 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b; 212 ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03; 213 pcmp->bpos++; 214 pcmp->bpos %= pcmp->blocks; 215 if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */ 216 voice_ctrl |= 0x08; /* enable loop */ 217 } else { 218 ramp_ctrl |= 0x04; /* enable rollover */ 219 } 220 end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels); 221 end -= voice_ctrl & 4 ? 2 : 1; 222 step = pcmp->dma_size / runtime->channels; 223 voice_ctrl |= 0x20; 224 if (!pcmp->final_volume) { 225 ramp_ctrl |= 0x20; 226 ramp_ctrl &= ~0x03; 227 } 228 for (idx = 0; idx < pcmp->voices; idx++, end += step) { 229 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 230 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); 231 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 232 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 233 voice_ctrl &= ~0x20; 234 } 235 if (!gus->gf1.enh_mode) { 236 snd_gf1_delay(gus); 237 voice_ctrl |= 0x20; 238 for (idx = 0; idx < pcmp->voices; idx++) { 239 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 240 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 241 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 242 voice_ctrl &= ~0x20; 243 } 244 } 245 spin_unlock(&gus->reg_lock); 246 247 snd_pcm_period_elapsed(pcmp->substream); 248} 249 250static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus, 251 struct snd_gus_voice * pvoice) 252{ 253 unsigned short vol; 254 int cvoice; 255 struct gus_pcm_private *pcmp = pvoice->private_data; 256 257 /* stop ramp, but leave rollover bit untouched */ 258 spin_lock(&gus->reg_lock); 259 snd_gf1_select_voice(gus, pvoice->number); 260 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 261 spin_unlock(&gus->reg_lock); 262 if (pcmp == NULL) 263 return; 264 /* are we active? */ 265 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 266 return; 267 /* load real volume - better precision */ 268 cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1; 269 if (pcmp->substream == NULL) 270 return; 271 vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 272 spin_lock(&gus->reg_lock); 273 snd_gf1_select_voice(gus, pvoice->number); 274 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 275 pcmp->final_volume = 1; 276 spin_unlock(&gus->reg_lock); 277} 278 279static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus) 280{ 281} 282 283static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf, 284 unsigned int pos, unsigned int count, 285 int w16, int invert) 286{ 287 unsigned int len; 288 unsigned long flags; 289 290 /* 291 printk(KERN_DEBUG 292 "poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", 293 (int)buf, pos, count, gus->gf1.port); 294 */ 295 while (count > 0) { 296 len = count; 297 if (len > 512) /* limit, to allow IRQ */ 298 len = 512; 299 count -= len; 300 if (gus->interwave) { 301 spin_lock_irqsave(&gus->reg_lock, flags); 302 snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00)); 303 snd_gf1_dram_addr(gus, pos); 304 if (w16) { 305 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL)); 306 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1); 307 } else { 308 outsb(GUSP(gus, DRAM), buf, len); 309 } 310 spin_unlock_irqrestore(&gus->reg_lock, flags); 311 buf += 512; 312 pos += 512; 313 } else { 314 invert = invert ? 0x80 : 0x00; 315 if (w16) { 316 len >>= 1; 317 while (len--) { 318 snd_gf1_poke(gus, pos++, *buf++); 319 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 320 } 321 } else { 322 while (len--) 323 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 324 } 325 } 326 if (count > 0 && !in_interrupt()) { 327 schedule_timeout_interruptible(1); 328 if (signal_pending(current)) 329 return -EAGAIN; 330 } 331 } 332 return 0; 333} 334 335static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream, 336 int voice, 337 snd_pcm_uframes_t pos, 338 void __user *src, 339 snd_pcm_uframes_t count) 340{ 341 struct snd_pcm_runtime *runtime = substream->runtime; 342 struct gus_pcm_private *pcmp = runtime->private_data; 343 unsigned int bpos, len; 344 345 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); 346 len = samples_to_bytes(runtime, count); 347 if (snd_BUG_ON(bpos > pcmp->dma_size)) 348 return -EIO; 349 if (snd_BUG_ON(bpos + len > pcmp->dma_size)) 350 return -EIO; 351 if (copy_from_user(runtime->dma_area + bpos, src, len)) 352 return -EFAULT; 353 if (snd_gf1_pcm_use_dma && len > 32) { 354 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); 355 } else { 356 struct snd_gus_card *gus = pcmp->gus; 357 int err, w16, invert; 358 359 w16 = (snd_pcm_format_width(runtime->format) == 16); 360 invert = snd_pcm_format_unsigned(runtime->format); 361 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) 362 return err; 363 } 364 return 0; 365} 366 367static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream, 368 int voice, 369 snd_pcm_uframes_t pos, 370 snd_pcm_uframes_t count) 371{ 372 struct snd_pcm_runtime *runtime = substream->runtime; 373 struct gus_pcm_private *pcmp = runtime->private_data; 374 unsigned int bpos, len; 375 376 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); 377 len = samples_to_bytes(runtime, count); 378 if (snd_BUG_ON(bpos > pcmp->dma_size)) 379 return -EIO; 380 if (snd_BUG_ON(bpos + len > pcmp->dma_size)) 381 return -EIO; 382 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count); 383 if (snd_gf1_pcm_use_dma && len > 32) { 384 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); 385 } else { 386 struct snd_gus_card *gus = pcmp->gus; 387 int err, w16, invert; 388 389 w16 = (snd_pcm_format_width(runtime->format) == 16); 390 invert = snd_pcm_format_unsigned(runtime->format); 391 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) 392 return err; 393 } 394 return 0; 395} 396 397static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream, 398 struct snd_pcm_hw_params *hw_params) 399{ 400 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 401 struct snd_pcm_runtime *runtime = substream->runtime; 402 struct gus_pcm_private *pcmp = runtime->private_data; 403 int err; 404 405 if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0) 406 return err; 407 if (err > 0) { /* change */ 408 struct snd_gf1_mem_block *block; 409 if (pcmp->memory > 0) { 410 snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory); 411 pcmp->memory = 0; 412 } 413 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc, 414 SNDRV_GF1_MEM_OWNER_DRIVER, 415 "GF1 PCM", 416 runtime->dma_bytes, 1, 32, 417 NULL)) == NULL) 418 return -ENOMEM; 419 pcmp->memory = block->ptr; 420 } 421 pcmp->voices = params_channels(hw_params); 422 if (pcmp->pvoices[0] == NULL) { 423 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 424 return -ENOMEM; 425 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave; 426 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume; 427 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change; 428 pcmp->pvoices[0]->private_data = pcmp; 429 } 430 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) { 431 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 432 return -ENOMEM; 433 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave; 434 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume; 435 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change; 436 pcmp->pvoices[1]->private_data = pcmp; 437 } else if (pcmp->voices == 1) { 438 if (pcmp->pvoices[1]) { 439 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 440 pcmp->pvoices[1] = NULL; 441 } 442 } 443 return 0; 444} 445 446static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream) 447{ 448 struct snd_pcm_runtime *runtime = substream->runtime; 449 struct gus_pcm_private *pcmp = runtime->private_data; 450 451 snd_pcm_lib_free_pages(substream); 452 if (pcmp->pvoices[0]) { 453 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]); 454 pcmp->pvoices[0] = NULL; 455 } 456 if (pcmp->pvoices[1]) { 457 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 458 pcmp->pvoices[1] = NULL; 459 } 460 if (pcmp->memory > 0) { 461 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory); 462 pcmp->memory = 0; 463 } 464 return 0; 465} 466 467static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream) 468{ 469 struct snd_pcm_runtime *runtime = substream->runtime; 470 struct gus_pcm_private *pcmp = runtime->private_data; 471 472 pcmp->bpos = 0; 473 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream); 474 pcmp->block_size = snd_pcm_lib_period_bytes(substream); 475 pcmp->blocks = pcmp->dma_size / pcmp->block_size; 476 return 0; 477} 478 479static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream, 480 int cmd) 481{ 482 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 483 struct snd_pcm_runtime *runtime = substream->runtime; 484 struct gus_pcm_private *pcmp = runtime->private_data; 485 int voice; 486 487 if (cmd == SNDRV_PCM_TRIGGER_START) { 488 snd_gf1_pcm_trigger_up(substream); 489 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 490 spin_lock(&pcmp->lock); 491 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE; 492 spin_unlock(&pcmp->lock); 493 voice = pcmp->pvoices[0]->number; 494 snd_gf1_stop_voices(gus, voice, voice); 495 if (pcmp->pvoices[1]) { 496 voice = pcmp->pvoices[1]->number; 497 snd_gf1_stop_voices(gus, voice, voice); 498 } 499 } else { 500 return -EINVAL; 501 } 502 return 0; 503} 504 505static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream) 506{ 507 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 508 struct snd_pcm_runtime *runtime = substream->runtime; 509 struct gus_pcm_private *pcmp = runtime->private_data; 510 unsigned int pos; 511 unsigned char voice_ctrl; 512 513 pos = 0; 514 spin_lock(&gus->reg_lock); 515 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) { 516 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number); 517 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); 518 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory; 519 if (substream->runtime->channels > 1) 520 pos <<= 1; 521 pos = bytes_to_frames(runtime, pos); 522 } 523 spin_unlock(&gus->reg_lock); 524 return pos; 525} 526 527static struct snd_ratnum clock = { 528 .num = 9878400/16, 529 .den_min = 2, 530 .den_max = 257, 531 .den_step = 1, 532}; 533 534static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = { 535 .nrats = 1, 536 .rats = &clock, 537}; 538 539static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream, 540 struct snd_pcm_hw_params *hw_params) 541{ 542 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 543 544 gus->c_dma_size = params_buffer_bytes(hw_params); 545 gus->c_period_size = params_period_bytes(hw_params); 546 gus->c_pos = 0; 547 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */ 548 if (params_channels(hw_params) > 1) 549 gus->gf1.pcm_rcntrl_reg |= 2; 550 if (gus->gf1.dma2 > 3) 551 gus->gf1.pcm_rcntrl_reg |= 4; 552 if (snd_pcm_format_unsigned(params_format(hw_params))) 553 gus->gf1.pcm_rcntrl_reg |= 0x80; 554 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 555} 556 557static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream) 558{ 559 return snd_pcm_lib_free_pages(substream); 560} 561 562static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream) 563{ 564 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 565 struct snd_pcm_runtime *runtime = substream->runtime; 566 567 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2); 568 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 569 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 570 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ); 571 return 0; 572} 573 574static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream, 575 int cmd) 576{ 577 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 578 int val; 579 580 if (cmd == SNDRV_PCM_TRIGGER_START) { 581 val = gus->gf1.pcm_rcntrl_reg; 582 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 583 val = 0; 584 } else { 585 return -EINVAL; 586 } 587 588 spin_lock(&gus->reg_lock); 589 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val); 590 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); 591 spin_unlock(&gus->reg_lock); 592 return 0; 593} 594 595static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream) 596{ 597 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 598 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size); 599 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size); 600 return pos; 601} 602 603static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus) 604{ 605 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 606 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 607 if (gus->pcm_cap_substream != NULL) { 608 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream); 609 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START); 610 gus->c_pos += gus->c_period_size; 611 snd_pcm_period_elapsed(gus->pcm_cap_substream); 612 } 613} 614 615static struct snd_pcm_hardware snd_gf1_pcm_playback = 616{ 617 .info = SNDRV_PCM_INFO_NONINTERLEAVED, 618 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 619 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), 620 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, 621 .rate_min = 5510, 622 .rate_max = 48000, 623 .channels_min = 1, 624 .channels_max = 2, 625 .buffer_bytes_max = (128*1024), 626 .period_bytes_min = 64, 627 .period_bytes_max = (128*1024), 628 .periods_min = 1, 629 .periods_max = 1024, 630 .fifo_size = 0, 631}; 632 633static struct snd_pcm_hardware snd_gf1_pcm_capture = 634{ 635 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 636 SNDRV_PCM_INFO_MMAP_VALID), 637 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8, 638 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 639 .rate_min = 5510, 640 .rate_max = 44100, 641 .channels_min = 1, 642 .channels_max = 2, 643 .buffer_bytes_max = (128*1024), 644 .period_bytes_min = 64, 645 .period_bytes_max = (128*1024), 646 .periods_min = 1, 647 .periods_max = 1024, 648 .fifo_size = 0, 649}; 650 651static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime) 652{ 653 kfree(runtime->private_data); 654} 655 656static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream) 657{ 658 struct gus_pcm_private *pcmp; 659 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 660 struct snd_pcm_runtime *runtime = substream->runtime; 661 int err; 662 663 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL); 664 if (pcmp == NULL) 665 return -ENOMEM; 666 pcmp->gus = gus; 667 spin_lock_init(&pcmp->lock); 668 init_waitqueue_head(&pcmp->sleep); 669 atomic_set(&pcmp->dma_count, 0); 670 671 runtime->private_data = pcmp; 672 runtime->private_free = snd_gf1_pcm_playback_free; 673 674 if ((err = snd_gf1_dma_init(gus)) < 0) 675 return err; 676 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE; 677 pcmp->substream = substream; 678 runtime->hw = snd_gf1_pcm_playback; 679 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max); 680 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max); 681 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64); 682 return 0; 683} 684 685static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream) 686{ 687 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 688 struct snd_pcm_runtime *runtime = substream->runtime; 689 struct gus_pcm_private *pcmp = runtime->private_data; 690 691 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ)) 692 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n"); 693 694 snd_gf1_dma_done(gus); 695 return 0; 696} 697 698static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream) 699{ 700 struct snd_pcm_runtime *runtime = substream->runtime; 701 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 702 703 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read; 704 gus->pcm_cap_substream = substream; 705 substream->runtime->hw = snd_gf1_pcm_capture; 706 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max); 707 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max); 708 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 709 &hw_constraints_clocks); 710 return 0; 711} 712 713static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream) 714{ 715 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 716 717 gus->pcm_cap_substream = NULL; 718 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ); 719 return 0; 720} 721 722static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 723{ 724 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 725 uinfo->count = 2; 726 uinfo->value.integer.min = 0; 727 uinfo->value.integer.max = 127; 728 return 0; 729} 730 731static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 732{ 733 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 734 unsigned long flags; 735 736 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 737 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1; 738 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1; 739 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 740 return 0; 741} 742 743static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 744{ 745 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 746 unsigned long flags; 747 int change; 748 unsigned int idx; 749 unsigned short val1, val2, vol; 750 struct gus_pcm_private *pcmp; 751 struct snd_gus_voice *pvoice; 752 753 val1 = ucontrol->value.integer.value[0] & 127; 754 val2 = ucontrol->value.integer.value[1] & 127; 755 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 756 change = val1 != gus->gf1.pcm_volume_level_left1 || 757 val2 != gus->gf1.pcm_volume_level_right1; 758 gus->gf1.pcm_volume_level_left1 = val1; 759 gus->gf1.pcm_volume_level_right1 = val2; 760 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4; 761 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4; 762 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 763 /* are we active? */ 764 spin_lock_irqsave(&gus->voice_alloc, flags); 765 for (idx = 0; idx < 32; idx++) { 766 pvoice = &gus->gf1.voices[idx]; 767 if (!pvoice->pcm) 768 continue; 769 pcmp = pvoice->private_data; 770 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 771 continue; 772 /* load real volume - better precision */ 773 spin_lock(&gus->reg_lock); 774 snd_gf1_select_voice(gus, pvoice->number); 775 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 776 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 777 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 778 pcmp->final_volume = 1; 779 spin_unlock(&gus->reg_lock); 780 } 781 spin_unlock_irqrestore(&gus->voice_alloc, flags); 782 return change; 783} 784 785static struct snd_kcontrol_new snd_gf1_pcm_volume_control = 786{ 787 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 788 .name = "PCM Playback Volume", 789 .info = snd_gf1_pcm_volume_info, 790 .get = snd_gf1_pcm_volume_get, 791 .put = snd_gf1_pcm_volume_put 792}; 793 794static struct snd_kcontrol_new snd_gf1_pcm_volume_control1 = 795{ 796 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 797 .name = "GPCM Playback Volume", 798 .info = snd_gf1_pcm_volume_info, 799 .get = snd_gf1_pcm_volume_get, 800 .put = snd_gf1_pcm_volume_put 801}; 802 803static struct snd_pcm_ops snd_gf1_pcm_playback_ops = { 804 .open = snd_gf1_pcm_playback_open, 805 .close = snd_gf1_pcm_playback_close, 806 .ioctl = snd_pcm_lib_ioctl, 807 .hw_params = snd_gf1_pcm_playback_hw_params, 808 .hw_free = snd_gf1_pcm_playback_hw_free, 809 .prepare = snd_gf1_pcm_playback_prepare, 810 .trigger = snd_gf1_pcm_playback_trigger, 811 .pointer = snd_gf1_pcm_playback_pointer, 812 .copy = snd_gf1_pcm_playback_copy, 813 .silence = snd_gf1_pcm_playback_silence, 814}; 815 816static struct snd_pcm_ops snd_gf1_pcm_capture_ops = { 817 .open = snd_gf1_pcm_capture_open, 818 .close = snd_gf1_pcm_capture_close, 819 .ioctl = snd_pcm_lib_ioctl, 820 .hw_params = snd_gf1_pcm_capture_hw_params, 821 .hw_free = snd_gf1_pcm_capture_hw_free, 822 .prepare = snd_gf1_pcm_capture_prepare, 823 .trigger = snd_gf1_pcm_capture_trigger, 824 .pointer = snd_gf1_pcm_capture_pointer, 825}; 826 827int snd_gf1_pcm_new(struct snd_gus_card * gus, int pcm_dev, int control_index, struct snd_pcm ** rpcm) 828{ 829 struct snd_card *card; 830 struct snd_kcontrol *kctl; 831 struct snd_pcm *pcm; 832 struct snd_pcm_substream *substream; 833 int capture, err; 834 835 if (rpcm) 836 *rpcm = NULL; 837 card = gus->card; 838 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0; 839 err = snd_pcm_new(card, 840 gus->interwave ? "AMD InterWave" : "GF1", 841 pcm_dev, 842 gus->gf1.pcm_channels / 2, 843 capture, 844 &pcm); 845 if (err < 0) 846 return err; 847 pcm->private_data = gus; 848 /* playback setup */ 849 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops); 850 851 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next) 852 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV, 853 snd_dma_isa_data(), 854 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024); 855 856 pcm->info_flags = 0; 857 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; 858 if (capture) { 859 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops); 860 if (gus->gf1.dma2 == gus->gf1.dma1) 861 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX; 862 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 863 SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(), 864 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024); 865 } 866 strcpy(pcm->name, pcm->id); 867 if (gus->interwave) { 868 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A'); 869 } 870 strcat(pcm->name, " (synth)"); 871 gus->pcm = pcm; 872 873 if (gus->codec_flag) 874 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus); 875 else 876 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus); 877 if ((err = snd_ctl_add(card, kctl)) < 0) 878 return err; 879 kctl->id.index = control_index; 880 881 if (rpcm) 882 *rpcm = pcm; 883 return 0; 884} 885