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 44 struct 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 62 static int snd_gf1_pcm_use_dma = 1; 63 64 static 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 74 static 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 } 105 106 static 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 } 185 186 static 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 #if 0 214 snd_gf1_select_voice(gus, pvoice->number); 215 printk(KERN_DEBUG "position = 0x%x\n", 216 (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4)); 217 snd_gf1_select_voice(gus, pcmp->pvoices[1]->number); 218 printk(KERN_DEBUG "position = 0x%x\n", 219 (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4)); 220 snd_gf1_select_voice(gus, pvoice->number); 221 #endif 222 pcmp->bpos++; 223 pcmp->bpos %= pcmp->blocks; 224 if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */ 225 voice_ctrl |= 0x08; /* enable loop */ 226 } else { 227 ramp_ctrl |= 0x04; /* enable rollover */ 228 } 229 end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels); 230 end -= voice_ctrl & 4 ? 2 : 1; 231 step = pcmp->dma_size / runtime->channels; 232 voice_ctrl |= 0x20; 233 if (!pcmp->final_volume) { 234 ramp_ctrl |= 0x20; 235 ramp_ctrl &= ~0x03; 236 } 237 for (idx = 0; idx < pcmp->voices; idx++, end += step) { 238 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 239 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); 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 if (!gus->gf1.enh_mode) { 245 snd_gf1_delay(gus); 246 voice_ctrl |= 0x20; 247 for (idx = 0; idx < pcmp->voices; idx++) { 248 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 249 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 250 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 251 voice_ctrl &= ~0x20; 252 } 253 } 254 spin_unlock(&gus->reg_lock); 255 256 snd_pcm_period_elapsed(pcmp->substream); 257 #if 0 258 if ((runtime->flags & SNDRV_PCM_FLG_MMAP) && 259 *runtime->state == SNDRV_PCM_STATE_RUNNING) { 260 end = pcmp->bpos * pcmp->block_size; 261 if (runtime->channels > 1) { 262 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2); 263 snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2); 264 } else { 265 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size); 266 } 267 } 268 #endif 269 } 270 271 static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus, 272 struct snd_gus_voice * pvoice) 273 { 274 unsigned short vol; 275 int cvoice; 276 struct gus_pcm_private *pcmp = pvoice->private_data; 277 278 /* stop ramp, but leave rollover bit untouched */ 279 spin_lock(&gus->reg_lock); 280 snd_gf1_select_voice(gus, pvoice->number); 281 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 282 spin_unlock(&gus->reg_lock); 283 if (pcmp == NULL) 284 return; 285 /* are we active? */ 286 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 287 return; 288 /* load real volume - better precision */ 289 cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1; 290 if (pcmp->substream == NULL) 291 return; 292 vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 293 spin_lock(&gus->reg_lock); 294 snd_gf1_select_voice(gus, pvoice->number); 295 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 296 pcmp->final_volume = 1; 297 spin_unlock(&gus->reg_lock); 298 } 299 300 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus) 301 { 302 } 303 304 static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf, 305 unsigned int pos, unsigned int count, 306 int w16, int invert) 307 { 308 unsigned int len; 309 unsigned long flags; 310 311 /* 312 printk(KERN_DEBUG 313 "poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", 314 (int)buf, pos, count, gus->gf1.port); 315 */ 316 while (count > 0) { 317 len = count; 318 if (len > 512) /* limit, to allow IRQ */ 319 len = 512; 320 count -= len; 321 if (gus->interwave) { 322 spin_lock_irqsave(&gus->reg_lock, flags); 323 snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00)); 324 snd_gf1_dram_addr(gus, pos); 325 if (w16) { 326 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL)); 327 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1); 328 } else { 329 outsb(GUSP(gus, DRAM), buf, len); 330 } 331 spin_unlock_irqrestore(&gus->reg_lock, flags); 332 buf += 512; 333 pos += 512; 334 } else { 335 invert = invert ? 0x80 : 0x00; 336 if (w16) { 337 len >>= 1; 338 while (len--) { 339 snd_gf1_poke(gus, pos++, *buf++); 340 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 341 } 342 } else { 343 while (len--) 344 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 345 } 346 } 347 if (count > 0 && !in_interrupt()) { 348 schedule_timeout_interruptible(1); 349 if (signal_pending(current)) 350 return -EAGAIN; 351 } 352 } 353 return 0; 354 } 355 356 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream, 357 int voice, 358 snd_pcm_uframes_t pos, 359 void __user *src, 360 snd_pcm_uframes_t count) 361 { 362 struct snd_pcm_runtime *runtime = substream->runtime; 363 struct gus_pcm_private *pcmp = runtime->private_data; 364 unsigned int bpos, len; 365 366 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); 367 len = samples_to_bytes(runtime, count); 368 if (snd_BUG_ON(bpos > pcmp->dma_size)) 369 return -EIO; 370 if (snd_BUG_ON(bpos + len > pcmp->dma_size)) 371 return -EIO; 372 if (copy_from_user(runtime->dma_area + bpos, src, len)) 373 return -EFAULT; 374 if (snd_gf1_pcm_use_dma && len > 32) { 375 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); 376 } else { 377 struct snd_gus_card *gus = pcmp->gus; 378 int err, w16, invert; 379 380 w16 = (snd_pcm_format_width(runtime->format) == 16); 381 invert = snd_pcm_format_unsigned(runtime->format); 382 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) 383 return err; 384 } 385 return 0; 386 } 387 388 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream, 389 int voice, 390 snd_pcm_uframes_t pos, 391 snd_pcm_uframes_t count) 392 { 393 struct snd_pcm_runtime *runtime = substream->runtime; 394 struct gus_pcm_private *pcmp = runtime->private_data; 395 unsigned int bpos, len; 396 397 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); 398 len = samples_to_bytes(runtime, count); 399 if (snd_BUG_ON(bpos > pcmp->dma_size)) 400 return -EIO; 401 if (snd_BUG_ON(bpos + len > pcmp->dma_size)) 402 return -EIO; 403 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count); 404 if (snd_gf1_pcm_use_dma && len > 32) { 405 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); 406 } else { 407 struct snd_gus_card *gus = pcmp->gus; 408 int err, w16, invert; 409 410 w16 = (snd_pcm_format_width(runtime->format) == 16); 411 invert = snd_pcm_format_unsigned(runtime->format); 412 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) 413 return err; 414 } 415 return 0; 416 } 417 418 static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream, 419 struct snd_pcm_hw_params *hw_params) 420 { 421 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 422 struct snd_pcm_runtime *runtime = substream->runtime; 423 struct gus_pcm_private *pcmp = runtime->private_data; 424 int err; 425 426 if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0) 427 return err; 428 if (err > 0) { /* change */ 429 struct snd_gf1_mem_block *block; 430 if (pcmp->memory > 0) { 431 snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory); 432 pcmp->memory = 0; 433 } 434 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc, 435 SNDRV_GF1_MEM_OWNER_DRIVER, 436 "GF1 PCM", 437 runtime->dma_bytes, 1, 32, 438 NULL)) == NULL) 439 return -ENOMEM; 440 pcmp->memory = block->ptr; 441 } 442 pcmp->voices = params_channels(hw_params); 443 if (pcmp->pvoices[0] == NULL) { 444 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 445 return -ENOMEM; 446 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave; 447 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume; 448 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change; 449 pcmp->pvoices[0]->private_data = pcmp; 450 } 451 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) { 452 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 453 return -ENOMEM; 454 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave; 455 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume; 456 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change; 457 pcmp->pvoices[1]->private_data = pcmp; 458 } else if (pcmp->voices == 1) { 459 if (pcmp->pvoices[1]) { 460 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 461 pcmp->pvoices[1] = NULL; 462 } 463 } 464 return 0; 465 } 466 467 static int snd_gf1_pcm_playback_hw_free(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 snd_pcm_lib_free_pages(substream); 473 if (pcmp->pvoices[0]) { 474 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]); 475 pcmp->pvoices[0] = NULL; 476 } 477 if (pcmp->pvoices[1]) { 478 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 479 pcmp->pvoices[1] = NULL; 480 } 481 if (pcmp->memory > 0) { 482 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory); 483 pcmp->memory = 0; 484 } 485 return 0; 486 } 487 488 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream) 489 { 490 struct snd_pcm_runtime *runtime = substream->runtime; 491 struct gus_pcm_private *pcmp = runtime->private_data; 492 493 pcmp->bpos = 0; 494 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream); 495 pcmp->block_size = snd_pcm_lib_period_bytes(substream); 496 pcmp->blocks = pcmp->dma_size / pcmp->block_size; 497 return 0; 498 } 499 500 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream, 501 int cmd) 502 { 503 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 504 struct snd_pcm_runtime *runtime = substream->runtime; 505 struct gus_pcm_private *pcmp = runtime->private_data; 506 int voice; 507 508 if (cmd == SNDRV_PCM_TRIGGER_START) { 509 snd_gf1_pcm_trigger_up(substream); 510 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 511 spin_lock(&pcmp->lock); 512 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE; 513 spin_unlock(&pcmp->lock); 514 voice = pcmp->pvoices[0]->number; 515 snd_gf1_stop_voices(gus, voice, voice); 516 if (pcmp->pvoices[1]) { 517 voice = pcmp->pvoices[1]->number; 518 snd_gf1_stop_voices(gus, voice, voice); 519 } 520 } else { 521 return -EINVAL; 522 } 523 return 0; 524 } 525 526 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream) 527 { 528 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 529 struct snd_pcm_runtime *runtime = substream->runtime; 530 struct gus_pcm_private *pcmp = runtime->private_data; 531 unsigned int pos; 532 unsigned char voice_ctrl; 533 534 pos = 0; 535 spin_lock(&gus->reg_lock); 536 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) { 537 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number); 538 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); 539 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory; 540 if (substream->runtime->channels > 1) 541 pos <<= 1; 542 pos = bytes_to_frames(runtime, pos); 543 } 544 spin_unlock(&gus->reg_lock); 545 return pos; 546 } 547 548 static struct snd_ratnum clock = { 549 .num = 9878400/16, 550 .den_min = 2, 551 .den_max = 257, 552 .den_step = 1, 553 }; 554 555 static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = { 556 .nrats = 1, 557 .rats = &clock, 558 }; 559 560 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream, 561 struct snd_pcm_hw_params *hw_params) 562 { 563 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 564 565 gus->c_dma_size = params_buffer_bytes(hw_params); 566 gus->c_period_size = params_period_bytes(hw_params); 567 gus->c_pos = 0; 568 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */ 569 if (params_channels(hw_params) > 1) 570 gus->gf1.pcm_rcntrl_reg |= 2; 571 if (gus->gf1.dma2 > 3) 572 gus->gf1.pcm_rcntrl_reg |= 4; 573 if (snd_pcm_format_unsigned(params_format(hw_params))) 574 gus->gf1.pcm_rcntrl_reg |= 0x80; 575 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 576 } 577 578 static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream) 579 { 580 return snd_pcm_lib_free_pages(substream); 581 } 582 583 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream) 584 { 585 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 586 struct snd_pcm_runtime *runtime = substream->runtime; 587 588 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2); 589 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 590 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 591 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ); 592 return 0; 593 } 594 595 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream, 596 int cmd) 597 { 598 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 599 int val; 600 601 if (cmd == SNDRV_PCM_TRIGGER_START) { 602 val = gus->gf1.pcm_rcntrl_reg; 603 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 604 val = 0; 605 } else { 606 return -EINVAL; 607 } 608 609 spin_lock(&gus->reg_lock); 610 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val); 611 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); 612 spin_unlock(&gus->reg_lock); 613 return 0; 614 } 615 616 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream) 617 { 618 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 619 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size); 620 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size); 621 return pos; 622 } 623 624 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus) 625 { 626 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 627 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 628 if (gus->pcm_cap_substream != NULL) { 629 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream); 630 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START); 631 gus->c_pos += gus->c_period_size; 632 snd_pcm_period_elapsed(gus->pcm_cap_substream); 633 } 634 } 635 636 static struct snd_pcm_hardware snd_gf1_pcm_playback = 637 { 638 .info = SNDRV_PCM_INFO_NONINTERLEAVED, 639 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 640 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), 641 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, 642 .rate_min = 5510, 643 .rate_max = 48000, 644 .channels_min = 1, 645 .channels_max = 2, 646 .buffer_bytes_max = (128*1024), 647 .period_bytes_min = 64, 648 .period_bytes_max = (128*1024), 649 .periods_min = 1, 650 .periods_max = 1024, 651 .fifo_size = 0, 652 }; 653 654 static struct snd_pcm_hardware snd_gf1_pcm_capture = 655 { 656 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 657 SNDRV_PCM_INFO_MMAP_VALID), 658 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8, 659 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 660 .rate_min = 5510, 661 .rate_max = 44100, 662 .channels_min = 1, 663 .channels_max = 2, 664 .buffer_bytes_max = (128*1024), 665 .period_bytes_min = 64, 666 .period_bytes_max = (128*1024), 667 .periods_min = 1, 668 .periods_max = 1024, 669 .fifo_size = 0, 670 }; 671 672 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime) 673 { 674 kfree(runtime->private_data); 675 } 676 677 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream) 678 { 679 struct gus_pcm_private *pcmp; 680 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 681 struct snd_pcm_runtime *runtime = substream->runtime; 682 int err; 683 684 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL); 685 if (pcmp == NULL) 686 return -ENOMEM; 687 pcmp->gus = gus; 688 spin_lock_init(&pcmp->lock); 689 init_waitqueue_head(&pcmp->sleep); 690 atomic_set(&pcmp->dma_count, 0); 691 692 runtime->private_data = pcmp; 693 runtime->private_free = snd_gf1_pcm_playback_free; 694 695 #if 0 696 printk(KERN_DEBUG "playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", 697 (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer); 698 #endif 699 if ((err = snd_gf1_dma_init(gus)) < 0) 700 return err; 701 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE; 702 pcmp->substream = substream; 703 runtime->hw = snd_gf1_pcm_playback; 704 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max); 705 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max); 706 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64); 707 return 0; 708 } 709 710 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream) 711 { 712 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 713 struct snd_pcm_runtime *runtime = substream->runtime; 714 struct gus_pcm_private *pcmp = runtime->private_data; 715 716 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ)) 717 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n"); 718 719 snd_gf1_dma_done(gus); 720 return 0; 721 } 722 723 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream) 724 { 725 struct snd_pcm_runtime *runtime = substream->runtime; 726 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 727 728 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read; 729 gus->pcm_cap_substream = substream; 730 substream->runtime->hw = snd_gf1_pcm_capture; 731 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max); 732 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max); 733 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 734 &hw_constraints_clocks); 735 return 0; 736 } 737 738 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream) 739 { 740 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 741 742 gus->pcm_cap_substream = NULL; 743 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ); 744 return 0; 745 } 746 747 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 748 { 749 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 750 uinfo->count = 2; 751 uinfo->value.integer.min = 0; 752 uinfo->value.integer.max = 127; 753 return 0; 754 } 755 756 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 757 { 758 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 759 unsigned long flags; 760 761 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 762 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1; 763 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1; 764 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 765 return 0; 766 } 767 768 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 769 { 770 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 771 unsigned long flags; 772 int change; 773 unsigned int idx; 774 unsigned short val1, val2, vol; 775 struct gus_pcm_private *pcmp; 776 struct snd_gus_voice *pvoice; 777 778 val1 = ucontrol->value.integer.value[0] & 127; 779 val2 = ucontrol->value.integer.value[1] & 127; 780 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 781 change = val1 != gus->gf1.pcm_volume_level_left1 || 782 val2 != gus->gf1.pcm_volume_level_right1; 783 gus->gf1.pcm_volume_level_left1 = val1; 784 gus->gf1.pcm_volume_level_right1 = val2; 785 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4; 786 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4; 787 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 788 /* are we active? */ 789 spin_lock_irqsave(&gus->voice_alloc, flags); 790 for (idx = 0; idx < 32; idx++) { 791 pvoice = &gus->gf1.voices[idx]; 792 if (!pvoice->pcm) 793 continue; 794 pcmp = pvoice->private_data; 795 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 796 continue; 797 /* load real volume - better precision */ 798 spin_lock(&gus->reg_lock); 799 snd_gf1_select_voice(gus, pvoice->number); 800 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 801 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 802 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 803 pcmp->final_volume = 1; 804 spin_unlock(&gus->reg_lock); 805 } 806 spin_unlock_irqrestore(&gus->voice_alloc, flags); 807 return change; 808 } 809 810 static struct snd_kcontrol_new snd_gf1_pcm_volume_control = 811 { 812 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 813 .name = "PCM Playback Volume", 814 .info = snd_gf1_pcm_volume_info, 815 .get = snd_gf1_pcm_volume_get, 816 .put = snd_gf1_pcm_volume_put 817 }; 818 819 static struct snd_kcontrol_new snd_gf1_pcm_volume_control1 = 820 { 821 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 822 .name = "GPCM Playback Volume", 823 .info = snd_gf1_pcm_volume_info, 824 .get = snd_gf1_pcm_volume_get, 825 .put = snd_gf1_pcm_volume_put 826 }; 827 828 static struct snd_pcm_ops snd_gf1_pcm_playback_ops = { 829 .open = snd_gf1_pcm_playback_open, 830 .close = snd_gf1_pcm_playback_close, 831 .ioctl = snd_pcm_lib_ioctl, 832 .hw_params = snd_gf1_pcm_playback_hw_params, 833 .hw_free = snd_gf1_pcm_playback_hw_free, 834 .prepare = snd_gf1_pcm_playback_prepare, 835 .trigger = snd_gf1_pcm_playback_trigger, 836 .pointer = snd_gf1_pcm_playback_pointer, 837 .copy = snd_gf1_pcm_playback_copy, 838 .silence = snd_gf1_pcm_playback_silence, 839 }; 840 841 static struct snd_pcm_ops snd_gf1_pcm_capture_ops = { 842 .open = snd_gf1_pcm_capture_open, 843 .close = snd_gf1_pcm_capture_close, 844 .ioctl = snd_pcm_lib_ioctl, 845 .hw_params = snd_gf1_pcm_capture_hw_params, 846 .hw_free = snd_gf1_pcm_capture_hw_free, 847 .prepare = snd_gf1_pcm_capture_prepare, 848 .trigger = snd_gf1_pcm_capture_trigger, 849 .pointer = snd_gf1_pcm_capture_pointer, 850 }; 851 852 int snd_gf1_pcm_new(struct snd_gus_card * gus, int pcm_dev, int control_index, struct snd_pcm ** rpcm) 853 { 854 struct snd_card *card; 855 struct snd_kcontrol *kctl; 856 struct snd_pcm *pcm; 857 struct snd_pcm_substream *substream; 858 int capture, err; 859 860 if (rpcm) 861 *rpcm = NULL; 862 card = gus->card; 863 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0; 864 err = snd_pcm_new(card, 865 gus->interwave ? "AMD InterWave" : "GF1", 866 pcm_dev, 867 gus->gf1.pcm_channels / 2, 868 capture, 869 &pcm); 870 if (err < 0) 871 return err; 872 pcm->private_data = gus; 873 /* playback setup */ 874 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops); 875 876 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next) 877 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV, 878 snd_dma_isa_data(), 879 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024); 880 881 pcm->info_flags = 0; 882 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; 883 if (capture) { 884 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops); 885 if (gus->gf1.dma2 == gus->gf1.dma1) 886 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX; 887 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 888 SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(), 889 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024); 890 } 891 strcpy(pcm->name, pcm->id); 892 if (gus->interwave) { 893 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A'); 894 } 895 strcat(pcm->name, " (synth)"); 896 gus->pcm = pcm; 897 898 if (gus->codec_flag) 899 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus); 900 else 901 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus); 902 if ((err = snd_ctl_add(card, kctl)) < 0) 903 return err; 904 kctl->id.index = control_index; 905 906 if (rpcm) 907 *rpcm = pcm; 908 return 0; 909 } 910 911