1 /* 2 * Copyright (c) by Jaroslav Kysela <perex@suse.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 <sound/driver.h> 29 #include <asm/dma.h> 30 #include <linux/slab.h> 31 #include <sound/core.h> 32 #include <sound/control.h> 33 #include <sound/gus.h> 34 #include <sound/pcm_params.h> 35 #include "gus_tables.h" 36 37 /* maximum rate */ 38 39 #define SNDRV_GF1_PCM_RATE 48000 40 41 #define SNDRV_GF1_PCM_PFLG_NONE 0 42 #define SNDRV_GF1_PCM_PFLG_ACTIVE (1<<0) 43 #define SNDRV_GF1_PCM_PFLG_NEUTRAL (2<<0) 44 45 struct gus_pcm_private { 46 struct snd_gus_card * gus; 47 struct snd_pcm_substream *substream; 48 spinlock_t lock; 49 unsigned int voices; 50 struct snd_gus_voice *pvoices[2]; 51 unsigned int memory; 52 unsigned short flags; 53 unsigned char voice_ctrl, ramp_ctrl; 54 unsigned int bpos; 55 unsigned int blocks; 56 unsigned int block_size; 57 unsigned int dma_size; 58 wait_queue_head_t sleep; 59 atomic_t dma_count; 60 int final_volume; 61 }; 62 63 static int snd_gf1_pcm_use_dma = 1; 64 65 static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data) 66 { 67 struct gus_pcm_private *pcmp = private_data; 68 69 if (pcmp) { 70 atomic_dec(&pcmp->dma_count); 71 wake_up(&pcmp->sleep); 72 } 73 } 74 75 static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream, 76 unsigned int offset, 77 unsigned int addr, 78 unsigned int count) 79 { 80 struct snd_gf1_dma_block block; 81 struct snd_pcm_runtime *runtime = substream->runtime; 82 struct gus_pcm_private *pcmp = runtime->private_data; 83 84 count += offset & 31; 85 offset &= ~31; 86 // snd_printk("block change - offset = 0x%x, count = 0x%x\n", offset, count); 87 memset(&block, 0, sizeof(block)); 88 block.cmd = SNDRV_GF1_DMA_IRQ; 89 if (snd_pcm_format_unsigned(runtime->format)) 90 block.cmd |= SNDRV_GF1_DMA_UNSIGNED; 91 if (snd_pcm_format_width(runtime->format) == 16) 92 block.cmd |= SNDRV_GF1_DMA_16BIT; 93 block.addr = addr & ~31; 94 block.buffer = runtime->dma_area + offset; 95 block.buf_addr = runtime->dma_addr + offset; 96 block.count = count; 97 block.private_data = pcmp; 98 block.ack = snd_gf1_pcm_block_change_ack; 99 if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0)) 100 atomic_inc(&pcmp->dma_count); 101 return 0; 102 } 103 104 static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream) 105 { 106 struct snd_pcm_runtime *runtime = substream->runtime; 107 struct gus_pcm_private *pcmp = runtime->private_data; 108 struct snd_gus_card * gus = pcmp->gus; 109 unsigned long flags; 110 unsigned char voice_ctrl, ramp_ctrl; 111 unsigned short rate; 112 unsigned int curr, begin, end; 113 unsigned short vol; 114 unsigned char pan; 115 unsigned int voice; 116 117 if (substream == NULL) 118 return; 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 // snd_printk("init: curr=0x%x, begin=0x%x, end=0x%x, ctrl=0x%x, ramp=0x%x, rate=0x%x\n", curr, begin, end, voice_ctrl, ramp_ctrl, rate); 142 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8; 143 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 144 spin_lock_irqsave(&gus->reg_lock, flags); 145 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 146 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan); 147 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate); 148 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4); 149 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); 150 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4); 151 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4); 152 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f); 153 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); 154 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8); 155 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 156 if (!gus->gf1.enh_mode) { 157 snd_gf1_delay(gus); 158 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 159 } 160 spin_unlock_irqrestore(&gus->reg_lock, flags); 161 } 162 spin_lock_irqsave(&gus->reg_lock, flags); 163 for (voice = 0; voice < pcmp->voices; voice++) { 164 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 165 if (gus->gf1.enh_mode) 166 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00); /* deactivate voice */ 167 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 168 voice_ctrl &= ~0x20; 169 } 170 voice_ctrl |= 0x20; 171 if (!gus->gf1.enh_mode) { 172 snd_gf1_delay(gus); 173 for (voice = 0; voice < pcmp->voices; voice++) { 174 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 175 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 176 voice_ctrl &= ~0x20; /* disable IRQ for next voice */ 177 } 178 } 179 spin_unlock_irqrestore(&gus->reg_lock, flags); 180 } 181 182 static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus, 183 struct snd_gus_voice *pvoice) 184 { 185 struct gus_pcm_private * pcmp; 186 struct snd_pcm_runtime *runtime; 187 unsigned char voice_ctrl, ramp_ctrl; 188 unsigned int idx; 189 unsigned int end, step; 190 191 if (!pvoice->private_data) { 192 snd_printd("snd_gf1_pcm: unknown wave irq?\n"); 193 snd_gf1_smart_stop_voice(gus, pvoice->number); 194 return; 195 } 196 pcmp = pvoice->private_data; 197 if (pcmp == NULL) { 198 snd_printd("snd_gf1_pcm: unknown wave irq?\n"); 199 snd_gf1_smart_stop_voice(gus, pvoice->number); 200 return; 201 } 202 gus = pcmp->gus; 203 runtime = pcmp->substream->runtime; 204 205 spin_lock(&gus->reg_lock); 206 snd_gf1_select_voice(gus, pvoice->number); 207 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b; 208 ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03; 209 #if 0 210 snd_gf1_select_voice(gus, pvoice->number); 211 printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4)); 212 snd_gf1_select_voice(gus, pcmp->pvoices[1]->number); 213 printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4)); 214 snd_gf1_select_voice(gus, pvoice->number); 215 #endif 216 pcmp->bpos++; 217 pcmp->bpos %= pcmp->blocks; 218 if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */ 219 voice_ctrl |= 0x08; /* enable loop */ 220 } else { 221 ramp_ctrl |= 0x04; /* enable rollover */ 222 } 223 end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels); 224 end -= voice_ctrl & 4 ? 2 : 1; 225 step = pcmp->dma_size / runtime->channels; 226 voice_ctrl |= 0x20; 227 if (!pcmp->final_volume) { 228 ramp_ctrl |= 0x20; 229 ramp_ctrl &= ~0x03; 230 } 231 for (idx = 0; idx < pcmp->voices; idx++, end += step) { 232 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 233 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); 234 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 235 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 236 voice_ctrl &= ~0x20; 237 } 238 if (!gus->gf1.enh_mode) { 239 snd_gf1_delay(gus); 240 voice_ctrl |= 0x20; 241 for (idx = 0; idx < pcmp->voices; idx++) { 242 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 243 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 244 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 245 voice_ctrl &= ~0x20; 246 } 247 } 248 spin_unlock(&gus->reg_lock); 249 250 snd_pcm_period_elapsed(pcmp->substream); 251 #if 0 252 if ((runtime->flags & SNDRV_PCM_FLG_MMAP) && 253 *runtime->state == SNDRV_PCM_STATE_RUNNING) { 254 end = pcmp->bpos * pcmp->block_size; 255 if (runtime->channels > 1) { 256 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2); 257 snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2); 258 } else { 259 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size); 260 } 261 } 262 #endif 263 } 264 265 static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus, 266 struct snd_gus_voice * pvoice) 267 { 268 unsigned short vol; 269 int cvoice; 270 struct gus_pcm_private *pcmp = pvoice->private_data; 271 272 /* stop ramp, but leave rollover bit untouched */ 273 spin_lock(&gus->reg_lock); 274 snd_gf1_select_voice(gus, pvoice->number); 275 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 276 spin_unlock(&gus->reg_lock); 277 if (pcmp == NULL) 278 return; 279 /* are we active? */ 280 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 281 return; 282 /* load real volume - better precision */ 283 cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1; 284 if (pcmp->substream == NULL) 285 return; 286 vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 287 spin_lock(&gus->reg_lock); 288 snd_gf1_select_voice(gus, pvoice->number); 289 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 290 pcmp->final_volume = 1; 291 spin_unlock(&gus->reg_lock); 292 } 293 294 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus) 295 { 296 } 297 298 static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf, 299 unsigned int pos, unsigned int count, 300 int w16, int invert) 301 { 302 unsigned int len; 303 unsigned long flags; 304 305 // printk("poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", (int)buf, pos, count, gus->gf1.port); 306 while (count > 0) { 307 len = count; 308 if (len > 512) /* limit, to allow IRQ */ 309 len = 512; 310 count -= len; 311 if (gus->interwave) { 312 spin_lock_irqsave(&gus->reg_lock, flags); 313 snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00)); 314 snd_gf1_dram_addr(gus, pos); 315 if (w16) { 316 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL)); 317 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1); 318 } else { 319 outsb(GUSP(gus, DRAM), buf, len); 320 } 321 spin_unlock_irqrestore(&gus->reg_lock, flags); 322 buf += 512; 323 pos += 512; 324 } else { 325 invert = invert ? 0x80 : 0x00; 326 if (w16) { 327 len >>= 1; 328 while (len--) { 329 snd_gf1_poke(gus, pos++, *buf++); 330 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 331 } 332 } else { 333 while (len--) 334 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 335 } 336 } 337 if (count > 0 && !in_interrupt()) { 338 schedule_timeout_interruptible(1); 339 if (signal_pending(current)) 340 return -EAGAIN; 341 } 342 } 343 return 0; 344 } 345 346 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream, 347 int voice, 348 snd_pcm_uframes_t pos, 349 void __user *src, 350 snd_pcm_uframes_t count) 351 { 352 struct snd_pcm_runtime *runtime = substream->runtime; 353 struct gus_pcm_private *pcmp = runtime->private_data; 354 unsigned int bpos, len; 355 356 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); 357 len = samples_to_bytes(runtime, count); 358 snd_assert(bpos <= pcmp->dma_size, return -EIO); 359 snd_assert(bpos + len <= pcmp->dma_size, return -EIO); 360 if (copy_from_user(runtime->dma_area + bpos, src, len)) 361 return -EFAULT; 362 if (snd_gf1_pcm_use_dma && len > 32) { 363 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); 364 } else { 365 struct snd_gus_card *gus = pcmp->gus; 366 int err, w16, invert; 367 368 w16 = (snd_pcm_format_width(runtime->format) == 16); 369 invert = snd_pcm_format_unsigned(runtime->format); 370 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) 371 return err; 372 } 373 return 0; 374 } 375 376 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream, 377 int voice, 378 snd_pcm_uframes_t pos, 379 snd_pcm_uframes_t count) 380 { 381 struct snd_pcm_runtime *runtime = substream->runtime; 382 struct gus_pcm_private *pcmp = runtime->private_data; 383 unsigned int bpos, len; 384 385 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); 386 len = samples_to_bytes(runtime, count); 387 snd_assert(bpos <= pcmp->dma_size, return -EIO); 388 snd_assert(bpos + len <= pcmp->dma_size, return -EIO); 389 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count); 390 if (snd_gf1_pcm_use_dma && len > 32) { 391 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); 392 } else { 393 struct snd_gus_card *gus = pcmp->gus; 394 int err, w16, invert; 395 396 w16 = (snd_pcm_format_width(runtime->format) == 16); 397 invert = snd_pcm_format_unsigned(runtime->format); 398 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) 399 return err; 400 } 401 return 0; 402 } 403 404 static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream, 405 struct snd_pcm_hw_params *hw_params) 406 { 407 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 408 struct snd_pcm_runtime *runtime = substream->runtime; 409 struct gus_pcm_private *pcmp = runtime->private_data; 410 int err; 411 412 if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0) 413 return err; 414 if (err > 0) { /* change */ 415 struct snd_gf1_mem_block *block; 416 if (pcmp->memory > 0) { 417 snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory); 418 pcmp->memory = 0; 419 } 420 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc, 421 SNDRV_GF1_MEM_OWNER_DRIVER, 422 "GF1 PCM", 423 runtime->dma_bytes, 1, 32, 424 NULL)) == NULL) 425 return -ENOMEM; 426 pcmp->memory = block->ptr; 427 } 428 pcmp->voices = params_channels(hw_params); 429 if (pcmp->pvoices[0] == NULL) { 430 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 431 return -ENOMEM; 432 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave; 433 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume; 434 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change; 435 pcmp->pvoices[0]->private_data = pcmp; 436 } 437 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) { 438 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 439 return -ENOMEM; 440 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave; 441 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume; 442 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change; 443 pcmp->pvoices[1]->private_data = pcmp; 444 } else if (pcmp->voices == 1) { 445 if (pcmp->pvoices[1]) { 446 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 447 pcmp->pvoices[1] = NULL; 448 } 449 } 450 return 0; 451 } 452 453 static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream) 454 { 455 struct snd_pcm_runtime *runtime = substream->runtime; 456 struct gus_pcm_private *pcmp = runtime->private_data; 457 458 snd_pcm_lib_free_pages(substream); 459 if (pcmp->pvoices[0]) { 460 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]); 461 pcmp->pvoices[0] = NULL; 462 } 463 if (pcmp->pvoices[1]) { 464 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 465 pcmp->pvoices[1] = NULL; 466 } 467 if (pcmp->memory > 0) { 468 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory); 469 pcmp->memory = 0; 470 } 471 return 0; 472 } 473 474 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream) 475 { 476 struct snd_pcm_runtime *runtime = substream->runtime; 477 struct gus_pcm_private *pcmp = runtime->private_data; 478 479 pcmp->bpos = 0; 480 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream); 481 pcmp->block_size = snd_pcm_lib_period_bytes(substream); 482 pcmp->blocks = pcmp->dma_size / pcmp->block_size; 483 return 0; 484 } 485 486 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream, 487 int cmd) 488 { 489 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 490 struct snd_pcm_runtime *runtime = substream->runtime; 491 struct gus_pcm_private *pcmp = runtime->private_data; 492 int voice; 493 494 if (cmd == SNDRV_PCM_TRIGGER_START) { 495 snd_gf1_pcm_trigger_up(substream); 496 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 497 spin_lock(&pcmp->lock); 498 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE; 499 spin_unlock(&pcmp->lock); 500 voice = pcmp->pvoices[0]->number; 501 snd_gf1_stop_voices(gus, voice, voice); 502 if (pcmp->pvoices[1]) { 503 voice = pcmp->pvoices[1]->number; 504 snd_gf1_stop_voices(gus, voice, voice); 505 } 506 } else { 507 return -EINVAL; 508 } 509 return 0; 510 } 511 512 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream) 513 { 514 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 515 struct snd_pcm_runtime *runtime = substream->runtime; 516 struct gus_pcm_private *pcmp = runtime->private_data; 517 unsigned int pos; 518 unsigned char voice_ctrl; 519 520 pos = 0; 521 spin_lock(&gus->reg_lock); 522 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) { 523 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number); 524 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); 525 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory; 526 if (substream->runtime->channels > 1) 527 pos <<= 1; 528 pos = bytes_to_frames(runtime, pos); 529 } 530 spin_unlock(&gus->reg_lock); 531 return pos; 532 } 533 534 static struct snd_ratnum clock = { 535 .num = 9878400/16, 536 .den_min = 2, 537 .den_max = 257, 538 .den_step = 1, 539 }; 540 541 static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = { 542 .nrats = 1, 543 .rats = &clock, 544 }; 545 546 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream, 547 struct snd_pcm_hw_params *hw_params) 548 { 549 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 550 551 gus->c_dma_size = params_buffer_bytes(hw_params); 552 gus->c_period_size = params_period_bytes(hw_params); 553 gus->c_pos = 0; 554 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */ 555 if (params_channels(hw_params) > 1) 556 gus->gf1.pcm_rcntrl_reg |= 2; 557 if (gus->gf1.dma2 > 3) 558 gus->gf1.pcm_rcntrl_reg |= 4; 559 if (snd_pcm_format_unsigned(params_format(hw_params))) 560 gus->gf1.pcm_rcntrl_reg |= 0x80; 561 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 562 } 563 564 static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream) 565 { 566 return snd_pcm_lib_free_pages(substream); 567 } 568 569 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream) 570 { 571 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 572 struct snd_pcm_runtime *runtime = substream->runtime; 573 574 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2); 575 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 576 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 577 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ); 578 return 0; 579 } 580 581 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream, 582 int cmd) 583 { 584 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 585 int val; 586 587 if (cmd == SNDRV_PCM_TRIGGER_START) { 588 val = gus->gf1.pcm_rcntrl_reg; 589 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 590 val = 0; 591 } else { 592 return -EINVAL; 593 } 594 595 spin_lock(&gus->reg_lock); 596 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val); 597 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); 598 spin_unlock(&gus->reg_lock); 599 return 0; 600 } 601 602 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream) 603 { 604 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 605 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size); 606 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size); 607 return pos; 608 } 609 610 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus) 611 { 612 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 613 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 614 if (gus->pcm_cap_substream != NULL) { 615 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream); 616 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START); 617 gus->c_pos += gus->c_period_size; 618 snd_pcm_period_elapsed(gus->pcm_cap_substream); 619 } 620 } 621 622 static struct snd_pcm_hardware snd_gf1_pcm_playback = 623 { 624 .info = SNDRV_PCM_INFO_NONINTERLEAVED, 625 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 626 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), 627 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, 628 .rate_min = 5510, 629 .rate_max = 48000, 630 .channels_min = 1, 631 .channels_max = 2, 632 .buffer_bytes_max = (128*1024), 633 .period_bytes_min = 64, 634 .period_bytes_max = (128*1024), 635 .periods_min = 1, 636 .periods_max = 1024, 637 .fifo_size = 0, 638 }; 639 640 static struct snd_pcm_hardware snd_gf1_pcm_capture = 641 { 642 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 643 SNDRV_PCM_INFO_MMAP_VALID), 644 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8, 645 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 646 .rate_min = 5510, 647 .rate_max = 44100, 648 .channels_min = 1, 649 .channels_max = 2, 650 .buffer_bytes_max = (128*1024), 651 .period_bytes_min = 64, 652 .period_bytes_max = (128*1024), 653 .periods_min = 1, 654 .periods_max = 1024, 655 .fifo_size = 0, 656 }; 657 658 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime) 659 { 660 kfree(runtime->private_data); 661 } 662 663 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream) 664 { 665 struct gus_pcm_private *pcmp; 666 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 667 struct snd_pcm_runtime *runtime = substream->runtime; 668 int err; 669 670 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL); 671 if (pcmp == NULL) 672 return -ENOMEM; 673 pcmp->gus = gus; 674 spin_lock_init(&pcmp->lock); 675 init_waitqueue_head(&pcmp->sleep); 676 atomic_set(&pcmp->dma_count, 0); 677 678 runtime->private_data = pcmp; 679 runtime->private_free = snd_gf1_pcm_playback_free; 680 681 #if 0 682 printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer); 683 #endif 684 if ((err = snd_gf1_dma_init(gus)) < 0) 685 return err; 686 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE; 687 pcmp->substream = substream; 688 runtime->hw = snd_gf1_pcm_playback; 689 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max); 690 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max); 691 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64); 692 return 0; 693 } 694 695 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream) 696 { 697 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 698 struct snd_pcm_runtime *runtime = substream->runtime; 699 struct gus_pcm_private *pcmp = runtime->private_data; 700 701 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ)) 702 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n"); 703 704 snd_gf1_dma_done(gus); 705 return 0; 706 } 707 708 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream) 709 { 710 struct snd_pcm_runtime *runtime = substream->runtime; 711 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 712 713 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read; 714 gus->pcm_cap_substream = substream; 715 substream->runtime->hw = snd_gf1_pcm_capture; 716 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max); 717 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max); 718 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 719 &hw_constraints_clocks); 720 return 0; 721 } 722 723 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream) 724 { 725 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 726 727 gus->pcm_cap_substream = NULL; 728 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ); 729 return 0; 730 } 731 732 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 733 { 734 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 735 uinfo->count = 2; 736 uinfo->value.integer.min = 0; 737 uinfo->value.integer.max = 127; 738 return 0; 739 } 740 741 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 742 { 743 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 744 unsigned long flags; 745 746 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 747 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1; 748 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1; 749 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 750 return 0; 751 } 752 753 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 754 { 755 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 756 unsigned long flags; 757 int change; 758 unsigned int idx; 759 unsigned short val1, val2, vol; 760 struct gus_pcm_private *pcmp; 761 struct snd_gus_voice *pvoice; 762 763 val1 = ucontrol->value.integer.value[0] & 127; 764 val2 = ucontrol->value.integer.value[1] & 127; 765 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 766 change = val1 != gus->gf1.pcm_volume_level_left1 || 767 val2 != gus->gf1.pcm_volume_level_right1; 768 gus->gf1.pcm_volume_level_left1 = val1; 769 gus->gf1.pcm_volume_level_right1 = val2; 770 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4; 771 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4; 772 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 773 /* are we active? */ 774 spin_lock_irqsave(&gus->voice_alloc, flags); 775 for (idx = 0; idx < 32; idx++) { 776 pvoice = &gus->gf1.voices[idx]; 777 if (!pvoice->pcm) 778 continue; 779 pcmp = pvoice->private_data; 780 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 781 continue; 782 /* load real volume - better precision */ 783 spin_lock_irqsave(&gus->reg_lock, flags); 784 snd_gf1_select_voice(gus, pvoice->number); 785 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 786 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 787 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 788 pcmp->final_volume = 1; 789 spin_unlock_irqrestore(&gus->reg_lock, flags); 790 } 791 spin_unlock_irqrestore(&gus->voice_alloc, flags); 792 return change; 793 } 794 795 static struct snd_kcontrol_new snd_gf1_pcm_volume_control = 796 { 797 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 798 .name = "PCM Playback Volume", 799 .info = snd_gf1_pcm_volume_info, 800 .get = snd_gf1_pcm_volume_get, 801 .put = snd_gf1_pcm_volume_put 802 }; 803 804 static struct snd_kcontrol_new snd_gf1_pcm_volume_control1 = 805 { 806 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 807 .name = "GPCM Playback Volume", 808 .info = snd_gf1_pcm_volume_info, 809 .get = snd_gf1_pcm_volume_get, 810 .put = snd_gf1_pcm_volume_put 811 }; 812 813 static struct snd_pcm_ops snd_gf1_pcm_playback_ops = { 814 .open = snd_gf1_pcm_playback_open, 815 .close = snd_gf1_pcm_playback_close, 816 .ioctl = snd_pcm_lib_ioctl, 817 .hw_params = snd_gf1_pcm_playback_hw_params, 818 .hw_free = snd_gf1_pcm_playback_hw_free, 819 .prepare = snd_gf1_pcm_playback_prepare, 820 .trigger = snd_gf1_pcm_playback_trigger, 821 .pointer = snd_gf1_pcm_playback_pointer, 822 .copy = snd_gf1_pcm_playback_copy, 823 .silence = snd_gf1_pcm_playback_silence, 824 }; 825 826 static struct snd_pcm_ops snd_gf1_pcm_capture_ops = { 827 .open = snd_gf1_pcm_capture_open, 828 .close = snd_gf1_pcm_capture_close, 829 .ioctl = snd_pcm_lib_ioctl, 830 .hw_params = snd_gf1_pcm_capture_hw_params, 831 .hw_free = snd_gf1_pcm_capture_hw_free, 832 .prepare = snd_gf1_pcm_capture_prepare, 833 .trigger = snd_gf1_pcm_capture_trigger, 834 .pointer = snd_gf1_pcm_capture_pointer, 835 }; 836 837 int snd_gf1_pcm_new(struct snd_gus_card * gus, int pcm_dev, int control_index, struct snd_pcm ** rpcm) 838 { 839 struct snd_card *card; 840 struct snd_kcontrol *kctl; 841 struct snd_pcm *pcm; 842 struct snd_pcm_substream *substream; 843 int capture, err; 844 845 if (rpcm) 846 *rpcm = NULL; 847 card = gus->card; 848 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0; 849 err = snd_pcm_new(card, 850 gus->interwave ? "AMD InterWave" : "GF1", 851 pcm_dev, 852 gus->gf1.pcm_channels / 2, 853 capture, 854 &pcm); 855 if (err < 0) 856 return err; 857 pcm->private_data = gus; 858 /* playback setup */ 859 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops); 860 861 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next) 862 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV, 863 snd_dma_isa_data(), 864 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024); 865 866 pcm->info_flags = 0; 867 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; 868 if (capture) { 869 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops); 870 if (gus->gf1.dma2 == gus->gf1.dma1) 871 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX; 872 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 873 SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(), 874 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024); 875 } 876 strcpy(pcm->name, pcm->id); 877 if (gus->interwave) { 878 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A'); 879 } 880 strcat(pcm->name, " (synth)"); 881 gus->pcm = pcm; 882 883 if (gus->codec_flag) 884 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus); 885 else 886 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus); 887 if ((err = snd_ctl_add(card, kctl)) < 0) 888 return err; 889 kctl->id.index = control_index; 890 891 if (rpcm) 892 *rpcm = pcm; 893 return 0; 894 } 895 896