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 <linux/sched/signal.h> 31 32 #include <sound/core.h> 33 #include <sound/control.h> 34 #include <sound/gus.h> 35 #include <sound/pcm_params.h> 36 #include "gus_tables.h" 37 38 /* maximum rate */ 39 40 #define SNDRV_GF1_PCM_RATE 48000 41 42 #define SNDRV_GF1_PCM_PFLG_NONE 0 43 #define SNDRV_GF1_PCM_PFLG_ACTIVE (1<<0) 44 #define SNDRV_GF1_PCM_PFLG_NEUTRAL (2<<0) 45 46 struct gus_pcm_private { 47 struct snd_gus_card * gus; 48 struct snd_pcm_substream *substream; 49 spinlock_t lock; 50 unsigned int voices; 51 struct snd_gus_voice *pvoices[2]; 52 unsigned int memory; 53 unsigned short flags; 54 unsigned char voice_ctrl, ramp_ctrl; 55 unsigned int bpos; 56 unsigned int blocks; 57 unsigned int block_size; 58 unsigned int dma_size; 59 wait_queue_head_t sleep; 60 atomic_t dma_count; 61 int final_volume; 62 }; 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 get_bpos(struct gus_pcm_private *pcmp, int voice, unsigned int pos, 357 unsigned int len) 358 { 359 unsigned int bpos = pos + (voice * (pcmp->dma_size / 2)); 360 if (snd_BUG_ON(bpos > pcmp->dma_size)) 361 return -EIO; 362 if (snd_BUG_ON(bpos + len > pcmp->dma_size)) 363 return -EIO; 364 return bpos; 365 } 366 367 static int playback_copy_ack(struct snd_pcm_substream *substream, 368 unsigned int bpos, unsigned int len) 369 { 370 struct snd_pcm_runtime *runtime = substream->runtime; 371 struct gus_pcm_private *pcmp = runtime->private_data; 372 struct snd_gus_card *gus = pcmp->gus; 373 int w16, invert; 374 375 if (len > 32) 376 return snd_gf1_pcm_block_change(substream, bpos, 377 pcmp->memory + bpos, len); 378 379 w16 = (snd_pcm_format_width(runtime->format) == 16); 380 invert = snd_pcm_format_unsigned(runtime->format); 381 return snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, 382 pcmp->memory + bpos, len, w16, invert); 383 } 384 385 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream, 386 int voice, unsigned long pos, 387 void __user *src, unsigned long count) 388 { 389 struct snd_pcm_runtime *runtime = substream->runtime; 390 struct gus_pcm_private *pcmp = runtime->private_data; 391 unsigned int len = count; 392 int bpos; 393 394 bpos = get_bpos(pcmp, voice, pos, len); 395 if (bpos < 0) 396 return pos; 397 if (copy_from_user(runtime->dma_area + bpos, src, len)) 398 return -EFAULT; 399 return playback_copy_ack(substream, bpos, len); 400 } 401 402 static int snd_gf1_pcm_playback_copy_kernel(struct snd_pcm_substream *substream, 403 int voice, unsigned long pos, 404 void *src, unsigned long count) 405 { 406 struct snd_pcm_runtime *runtime = substream->runtime; 407 struct gus_pcm_private *pcmp = runtime->private_data; 408 unsigned int len = count; 409 int bpos; 410 411 bpos = get_bpos(pcmp, voice, pos, len); 412 if (bpos < 0) 413 return pos; 414 memcpy(runtime->dma_area + bpos, src, len); 415 return playback_copy_ack(substream, bpos, len); 416 } 417 418 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream, 419 int voice, unsigned long pos, 420 unsigned long count) 421 { 422 struct snd_pcm_runtime *runtime = substream->runtime; 423 struct gus_pcm_private *pcmp = runtime->private_data; 424 unsigned int len = count; 425 int bpos; 426 427 bpos = get_bpos(pcmp, voice, pos, len); 428 if (bpos < 0) 429 return pos; 430 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, 431 bytes_to_samples(runtime, count)); 432 return playback_copy_ack(substream, bpos, len); 433 } 434 435 static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream, 436 struct snd_pcm_hw_params *hw_params) 437 { 438 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 439 struct snd_pcm_runtime *runtime = substream->runtime; 440 struct gus_pcm_private *pcmp = runtime->private_data; 441 int err; 442 443 if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0) 444 return err; 445 if (err > 0) { /* change */ 446 struct snd_gf1_mem_block *block; 447 if (pcmp->memory > 0) { 448 snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory); 449 pcmp->memory = 0; 450 } 451 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc, 452 SNDRV_GF1_MEM_OWNER_DRIVER, 453 "GF1 PCM", 454 runtime->dma_bytes, 1, 32, 455 NULL)) == NULL) 456 return -ENOMEM; 457 pcmp->memory = block->ptr; 458 } 459 pcmp->voices = params_channels(hw_params); 460 if (pcmp->pvoices[0] == NULL) { 461 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 462 return -ENOMEM; 463 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave; 464 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume; 465 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change; 466 pcmp->pvoices[0]->private_data = pcmp; 467 } 468 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) { 469 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 470 return -ENOMEM; 471 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave; 472 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume; 473 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change; 474 pcmp->pvoices[1]->private_data = pcmp; 475 } else if (pcmp->voices == 1) { 476 if (pcmp->pvoices[1]) { 477 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 478 pcmp->pvoices[1] = NULL; 479 } 480 } 481 return 0; 482 } 483 484 static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream) 485 { 486 struct snd_pcm_runtime *runtime = substream->runtime; 487 struct gus_pcm_private *pcmp = runtime->private_data; 488 489 snd_pcm_lib_free_pages(substream); 490 if (pcmp->pvoices[0]) { 491 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]); 492 pcmp->pvoices[0] = NULL; 493 } 494 if (pcmp->pvoices[1]) { 495 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 496 pcmp->pvoices[1] = NULL; 497 } 498 if (pcmp->memory > 0) { 499 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory); 500 pcmp->memory = 0; 501 } 502 return 0; 503 } 504 505 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream) 506 { 507 struct snd_pcm_runtime *runtime = substream->runtime; 508 struct gus_pcm_private *pcmp = runtime->private_data; 509 510 pcmp->bpos = 0; 511 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream); 512 pcmp->block_size = snd_pcm_lib_period_bytes(substream); 513 pcmp->blocks = pcmp->dma_size / pcmp->block_size; 514 return 0; 515 } 516 517 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream, 518 int cmd) 519 { 520 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 521 struct snd_pcm_runtime *runtime = substream->runtime; 522 struct gus_pcm_private *pcmp = runtime->private_data; 523 int voice; 524 525 if (cmd == SNDRV_PCM_TRIGGER_START) { 526 snd_gf1_pcm_trigger_up(substream); 527 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 528 spin_lock(&pcmp->lock); 529 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE; 530 spin_unlock(&pcmp->lock); 531 voice = pcmp->pvoices[0]->number; 532 snd_gf1_stop_voices(gus, voice, voice); 533 if (pcmp->pvoices[1]) { 534 voice = pcmp->pvoices[1]->number; 535 snd_gf1_stop_voices(gus, voice, voice); 536 } 537 } else { 538 return -EINVAL; 539 } 540 return 0; 541 } 542 543 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream) 544 { 545 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 546 struct snd_pcm_runtime *runtime = substream->runtime; 547 struct gus_pcm_private *pcmp = runtime->private_data; 548 unsigned int pos; 549 unsigned char voice_ctrl; 550 551 pos = 0; 552 spin_lock(&gus->reg_lock); 553 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) { 554 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number); 555 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); 556 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory; 557 if (substream->runtime->channels > 1) 558 pos <<= 1; 559 pos = bytes_to_frames(runtime, pos); 560 } 561 spin_unlock(&gus->reg_lock); 562 return pos; 563 } 564 565 static const struct snd_ratnum clock = { 566 .num = 9878400/16, 567 .den_min = 2, 568 .den_max = 257, 569 .den_step = 1, 570 }; 571 572 static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = { 573 .nrats = 1, 574 .rats = &clock, 575 }; 576 577 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream, 578 struct snd_pcm_hw_params *hw_params) 579 { 580 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 581 582 gus->c_dma_size = params_buffer_bytes(hw_params); 583 gus->c_period_size = params_period_bytes(hw_params); 584 gus->c_pos = 0; 585 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */ 586 if (params_channels(hw_params) > 1) 587 gus->gf1.pcm_rcntrl_reg |= 2; 588 if (gus->gf1.dma2 > 3) 589 gus->gf1.pcm_rcntrl_reg |= 4; 590 if (snd_pcm_format_unsigned(params_format(hw_params))) 591 gus->gf1.pcm_rcntrl_reg |= 0x80; 592 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 593 } 594 595 static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream) 596 { 597 return snd_pcm_lib_free_pages(substream); 598 } 599 600 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream) 601 { 602 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 603 struct snd_pcm_runtime *runtime = substream->runtime; 604 605 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2); 606 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 607 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 608 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ); 609 return 0; 610 } 611 612 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream, 613 int cmd) 614 { 615 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 616 int val; 617 618 if (cmd == SNDRV_PCM_TRIGGER_START) { 619 val = gus->gf1.pcm_rcntrl_reg; 620 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 621 val = 0; 622 } else { 623 return -EINVAL; 624 } 625 626 spin_lock(&gus->reg_lock); 627 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val); 628 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); 629 spin_unlock(&gus->reg_lock); 630 return 0; 631 } 632 633 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream) 634 { 635 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 636 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size); 637 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size); 638 return pos; 639 } 640 641 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus) 642 { 643 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 644 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 645 if (gus->pcm_cap_substream != NULL) { 646 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream); 647 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START); 648 gus->c_pos += gus->c_period_size; 649 snd_pcm_period_elapsed(gus->pcm_cap_substream); 650 } 651 } 652 653 static const struct snd_pcm_hardware snd_gf1_pcm_playback = 654 { 655 .info = SNDRV_PCM_INFO_NONINTERLEAVED, 656 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 657 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), 658 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, 659 .rate_min = 5510, 660 .rate_max = 48000, 661 .channels_min = 1, 662 .channels_max = 2, 663 .buffer_bytes_max = (128*1024), 664 .period_bytes_min = 64, 665 .period_bytes_max = (128*1024), 666 .periods_min = 1, 667 .periods_max = 1024, 668 .fifo_size = 0, 669 }; 670 671 static const struct snd_pcm_hardware snd_gf1_pcm_capture = 672 { 673 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 674 SNDRV_PCM_INFO_MMAP_VALID), 675 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8, 676 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 677 .rate_min = 5510, 678 .rate_max = 44100, 679 .channels_min = 1, 680 .channels_max = 2, 681 .buffer_bytes_max = (128*1024), 682 .period_bytes_min = 64, 683 .period_bytes_max = (128*1024), 684 .periods_min = 1, 685 .periods_max = 1024, 686 .fifo_size = 0, 687 }; 688 689 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime) 690 { 691 kfree(runtime->private_data); 692 } 693 694 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream) 695 { 696 struct gus_pcm_private *pcmp; 697 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 698 struct snd_pcm_runtime *runtime = substream->runtime; 699 int err; 700 701 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL); 702 if (pcmp == NULL) 703 return -ENOMEM; 704 pcmp->gus = gus; 705 spin_lock_init(&pcmp->lock); 706 init_waitqueue_head(&pcmp->sleep); 707 atomic_set(&pcmp->dma_count, 0); 708 709 runtime->private_data = pcmp; 710 runtime->private_free = snd_gf1_pcm_playback_free; 711 712 #if 0 713 printk(KERN_DEBUG "playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", 714 (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer); 715 #endif 716 if ((err = snd_gf1_dma_init(gus)) < 0) 717 return err; 718 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE; 719 pcmp->substream = substream; 720 runtime->hw = snd_gf1_pcm_playback; 721 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max); 722 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max); 723 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64); 724 return 0; 725 } 726 727 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream) 728 { 729 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 730 struct snd_pcm_runtime *runtime = substream->runtime; 731 struct gus_pcm_private *pcmp = runtime->private_data; 732 733 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ)) 734 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n"); 735 736 snd_gf1_dma_done(gus); 737 return 0; 738 } 739 740 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream) 741 { 742 struct snd_pcm_runtime *runtime = substream->runtime; 743 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 744 745 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read; 746 gus->pcm_cap_substream = substream; 747 substream->runtime->hw = snd_gf1_pcm_capture; 748 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max); 749 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max); 750 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 751 &hw_constraints_clocks); 752 return 0; 753 } 754 755 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream) 756 { 757 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 758 759 gus->pcm_cap_substream = NULL; 760 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ); 761 return 0; 762 } 763 764 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 765 { 766 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 767 uinfo->count = 2; 768 uinfo->value.integer.min = 0; 769 uinfo->value.integer.max = 127; 770 return 0; 771 } 772 773 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 774 { 775 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 776 unsigned long flags; 777 778 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 779 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1; 780 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1; 781 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 782 return 0; 783 } 784 785 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 786 { 787 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 788 unsigned long flags; 789 int change; 790 unsigned int idx; 791 unsigned short val1, val2, vol; 792 struct gus_pcm_private *pcmp; 793 struct snd_gus_voice *pvoice; 794 795 val1 = ucontrol->value.integer.value[0] & 127; 796 val2 = ucontrol->value.integer.value[1] & 127; 797 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 798 change = val1 != gus->gf1.pcm_volume_level_left1 || 799 val2 != gus->gf1.pcm_volume_level_right1; 800 gus->gf1.pcm_volume_level_left1 = val1; 801 gus->gf1.pcm_volume_level_right1 = val2; 802 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4; 803 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4; 804 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 805 /* are we active? */ 806 spin_lock_irqsave(&gus->voice_alloc, flags); 807 for (idx = 0; idx < 32; idx++) { 808 pvoice = &gus->gf1.voices[idx]; 809 if (!pvoice->pcm) 810 continue; 811 pcmp = pvoice->private_data; 812 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 813 continue; 814 /* load real volume - better precision */ 815 spin_lock(&gus->reg_lock); 816 snd_gf1_select_voice(gus, pvoice->number); 817 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 818 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 819 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 820 pcmp->final_volume = 1; 821 spin_unlock(&gus->reg_lock); 822 } 823 spin_unlock_irqrestore(&gus->voice_alloc, flags); 824 return change; 825 } 826 827 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control = 828 { 829 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 830 .name = "PCM Playback Volume", 831 .info = snd_gf1_pcm_volume_info, 832 .get = snd_gf1_pcm_volume_get, 833 .put = snd_gf1_pcm_volume_put 834 }; 835 836 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control1 = 837 { 838 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 839 .name = "GPCM Playback Volume", 840 .info = snd_gf1_pcm_volume_info, 841 .get = snd_gf1_pcm_volume_get, 842 .put = snd_gf1_pcm_volume_put 843 }; 844 845 static const struct snd_pcm_ops snd_gf1_pcm_playback_ops = { 846 .open = snd_gf1_pcm_playback_open, 847 .close = snd_gf1_pcm_playback_close, 848 .ioctl = snd_pcm_lib_ioctl, 849 .hw_params = snd_gf1_pcm_playback_hw_params, 850 .hw_free = snd_gf1_pcm_playback_hw_free, 851 .prepare = snd_gf1_pcm_playback_prepare, 852 .trigger = snd_gf1_pcm_playback_trigger, 853 .pointer = snd_gf1_pcm_playback_pointer, 854 .copy_user = snd_gf1_pcm_playback_copy, 855 .copy_kernel = snd_gf1_pcm_playback_copy_kernel, 856 .fill_silence = snd_gf1_pcm_playback_silence, 857 }; 858 859 static const struct snd_pcm_ops snd_gf1_pcm_capture_ops = { 860 .open = snd_gf1_pcm_capture_open, 861 .close = snd_gf1_pcm_capture_close, 862 .ioctl = snd_pcm_lib_ioctl, 863 .hw_params = snd_gf1_pcm_capture_hw_params, 864 .hw_free = snd_gf1_pcm_capture_hw_free, 865 .prepare = snd_gf1_pcm_capture_prepare, 866 .trigger = snd_gf1_pcm_capture_trigger, 867 .pointer = snd_gf1_pcm_capture_pointer, 868 }; 869 870 int snd_gf1_pcm_new(struct snd_gus_card *gus, int pcm_dev, int control_index) 871 { 872 struct snd_card *card; 873 struct snd_kcontrol *kctl; 874 struct snd_pcm *pcm; 875 struct snd_pcm_substream *substream; 876 int capture, err; 877 878 card = gus->card; 879 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0; 880 err = snd_pcm_new(card, 881 gus->interwave ? "AMD InterWave" : "GF1", 882 pcm_dev, 883 gus->gf1.pcm_channels / 2, 884 capture, 885 &pcm); 886 if (err < 0) 887 return err; 888 pcm->private_data = gus; 889 /* playback setup */ 890 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops); 891 892 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next) 893 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV, 894 card->dev, 895 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024); 896 897 pcm->info_flags = 0; 898 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; 899 if (capture) { 900 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops); 901 if (gus->gf1.dma2 == gus->gf1.dma1) 902 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX; 903 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 904 SNDRV_DMA_TYPE_DEV, card->dev, 905 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024); 906 } 907 strcpy(pcm->name, pcm->id); 908 if (gus->interwave) { 909 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A'); 910 } 911 strcat(pcm->name, " (synth)"); 912 gus->pcm = pcm; 913 914 if (gus->codec_flag) 915 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus); 916 else 917 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus); 918 if ((err = snd_ctl_add(card, kctl)) < 0) 919 return err; 920 kctl->id.index = control_index; 921 922 return 0; 923 } 924 925