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 // snd_printk("block change - offset = 0x%x, count = 0x%x\n", offset, count); 86 memset(&block, 0, sizeof(block)); 87 block.cmd = SNDRV_GF1_DMA_IRQ; 88 if (snd_pcm_format_unsigned(runtime->format)) 89 block.cmd |= SNDRV_GF1_DMA_UNSIGNED; 90 if (snd_pcm_format_width(runtime->format) == 16) 91 block.cmd |= SNDRV_GF1_DMA_16BIT; 92 block.addr = addr & ~31; 93 block.buffer = runtime->dma_area + offset; 94 block.buf_addr = runtime->dma_addr + offset; 95 block.count = count; 96 block.private_data = pcmp; 97 block.ack = snd_gf1_pcm_block_change_ack; 98 if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0)) 99 atomic_inc(&pcmp->dma_count); 100 return 0; 101 } 102 103 static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream) 104 { 105 struct snd_pcm_runtime *runtime = substream->runtime; 106 struct gus_pcm_private *pcmp = runtime->private_data; 107 struct snd_gus_card * gus = pcmp->gus; 108 unsigned long flags; 109 unsigned char voice_ctrl, ramp_ctrl; 110 unsigned short rate; 111 unsigned int curr, begin, end; 112 unsigned short vol; 113 unsigned char pan; 114 unsigned int voice; 115 116 spin_lock_irqsave(&pcmp->lock, flags); 117 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) { 118 spin_unlock_irqrestore(&pcmp->lock, flags); 119 return; 120 } 121 pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE; 122 pcmp->final_volume = 0; 123 spin_unlock_irqrestore(&pcmp->lock, flags); 124 rate = snd_gf1_translate_freq(gus, runtime->rate << 4); 125 /* enable WAVE IRQ */ 126 voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20; 127 /* enable RAMP IRQ + rollover */ 128 ramp_ctrl = 0x24; 129 if (pcmp->blocks == 1) { 130 voice_ctrl |= 0x08; /* loop enable */ 131 ramp_ctrl &= ~0x04; /* disable rollover */ 132 } 133 for (voice = 0; voice < pcmp->voices; voice++) { 134 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels); 135 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels; 136 end = curr + (pcmp->block_size / runtime->channels); 137 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1; 138 // 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); 139 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8; 140 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 141 spin_lock_irqsave(&gus->reg_lock, flags); 142 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 143 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan); 144 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate); 145 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4); 146 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); 147 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4); 148 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4); 149 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f); 150 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); 151 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8); 152 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 153 if (!gus->gf1.enh_mode) { 154 snd_gf1_delay(gus); 155 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 156 } 157 spin_unlock_irqrestore(&gus->reg_lock, flags); 158 } 159 spin_lock_irqsave(&gus->reg_lock, flags); 160 for (voice = 0; voice < pcmp->voices; voice++) { 161 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 162 if (gus->gf1.enh_mode) 163 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00); /* deactivate voice */ 164 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 165 voice_ctrl &= ~0x20; 166 } 167 voice_ctrl |= 0x20; 168 if (!gus->gf1.enh_mode) { 169 snd_gf1_delay(gus); 170 for (voice = 0; voice < pcmp->voices; voice++) { 171 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 172 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 173 voice_ctrl &= ~0x20; /* disable IRQ for next voice */ 174 } 175 } 176 spin_unlock_irqrestore(&gus->reg_lock, flags); 177 } 178 179 static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus, 180 struct snd_gus_voice *pvoice) 181 { 182 struct gus_pcm_private * pcmp; 183 struct snd_pcm_runtime *runtime; 184 unsigned char voice_ctrl, ramp_ctrl; 185 unsigned int idx; 186 unsigned int end, step; 187 188 if (!pvoice->private_data) { 189 snd_printd("snd_gf1_pcm: unknown wave irq?\n"); 190 snd_gf1_smart_stop_voice(gus, pvoice->number); 191 return; 192 } 193 pcmp = pvoice->private_data; 194 if (pcmp == NULL) { 195 snd_printd("snd_gf1_pcm: unknown wave irq?\n"); 196 snd_gf1_smart_stop_voice(gus, pvoice->number); 197 return; 198 } 199 gus = pcmp->gus; 200 runtime = pcmp->substream->runtime; 201 202 spin_lock(&gus->reg_lock); 203 snd_gf1_select_voice(gus, pvoice->number); 204 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b; 205 ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03; 206 #if 0 207 snd_gf1_select_voice(gus, pvoice->number); 208 printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4)); 209 snd_gf1_select_voice(gus, pcmp->pvoices[1]->number); 210 printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4)); 211 snd_gf1_select_voice(gus, pvoice->number); 212 #endif 213 pcmp->bpos++; 214 pcmp->bpos %= pcmp->blocks; 215 if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */ 216 voice_ctrl |= 0x08; /* enable loop */ 217 } else { 218 ramp_ctrl |= 0x04; /* enable rollover */ 219 } 220 end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels); 221 end -= voice_ctrl & 4 ? 2 : 1; 222 step = pcmp->dma_size / runtime->channels; 223 voice_ctrl |= 0x20; 224 if (!pcmp->final_volume) { 225 ramp_ctrl |= 0x20; 226 ramp_ctrl &= ~0x03; 227 } 228 for (idx = 0; idx < pcmp->voices; idx++, end += step) { 229 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 230 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); 231 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 232 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 233 voice_ctrl &= ~0x20; 234 } 235 if (!gus->gf1.enh_mode) { 236 snd_gf1_delay(gus); 237 voice_ctrl |= 0x20; 238 for (idx = 0; idx < pcmp->voices; idx++) { 239 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 240 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 241 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 242 voice_ctrl &= ~0x20; 243 } 244 } 245 spin_unlock(&gus->reg_lock); 246 247 snd_pcm_period_elapsed(pcmp->substream); 248 #if 0 249 if ((runtime->flags & SNDRV_PCM_FLG_MMAP) && 250 *runtime->state == SNDRV_PCM_STATE_RUNNING) { 251 end = pcmp->bpos * pcmp->block_size; 252 if (runtime->channels > 1) { 253 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2); 254 snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2); 255 } else { 256 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size); 257 } 258 } 259 #endif 260 } 261 262 static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus, 263 struct snd_gus_voice * pvoice) 264 { 265 unsigned short vol; 266 int cvoice; 267 struct gus_pcm_private *pcmp = pvoice->private_data; 268 269 /* stop ramp, but leave rollover bit untouched */ 270 spin_lock(&gus->reg_lock); 271 snd_gf1_select_voice(gus, pvoice->number); 272 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 273 spin_unlock(&gus->reg_lock); 274 if (pcmp == NULL) 275 return; 276 /* are we active? */ 277 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 278 return; 279 /* load real volume - better precision */ 280 cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1; 281 if (pcmp->substream == NULL) 282 return; 283 vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 284 spin_lock(&gus->reg_lock); 285 snd_gf1_select_voice(gus, pvoice->number); 286 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 287 pcmp->final_volume = 1; 288 spin_unlock(&gus->reg_lock); 289 } 290 291 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus) 292 { 293 } 294 295 static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf, 296 unsigned int pos, unsigned int count, 297 int w16, int invert) 298 { 299 unsigned int len; 300 unsigned long flags; 301 302 // printk("poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", (int)buf, pos, count, gus->gf1.port); 303 while (count > 0) { 304 len = count; 305 if (len > 512) /* limit, to allow IRQ */ 306 len = 512; 307 count -= len; 308 if (gus->interwave) { 309 spin_lock_irqsave(&gus->reg_lock, flags); 310 snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00)); 311 snd_gf1_dram_addr(gus, pos); 312 if (w16) { 313 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL)); 314 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1); 315 } else { 316 outsb(GUSP(gus, DRAM), buf, len); 317 } 318 spin_unlock_irqrestore(&gus->reg_lock, flags); 319 buf += 512; 320 pos += 512; 321 } else { 322 invert = invert ? 0x80 : 0x00; 323 if (w16) { 324 len >>= 1; 325 while (len--) { 326 snd_gf1_poke(gus, pos++, *buf++); 327 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 328 } 329 } else { 330 while (len--) 331 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 332 } 333 } 334 if (count > 0 && !in_interrupt()) { 335 schedule_timeout_interruptible(1); 336 if (signal_pending(current)) 337 return -EAGAIN; 338 } 339 } 340 return 0; 341 } 342 343 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream, 344 int voice, 345 snd_pcm_uframes_t pos, 346 void __user *src, 347 snd_pcm_uframes_t count) 348 { 349 struct snd_pcm_runtime *runtime = substream->runtime; 350 struct gus_pcm_private *pcmp = runtime->private_data; 351 unsigned int bpos, len; 352 353 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); 354 len = samples_to_bytes(runtime, count); 355 snd_assert(bpos <= pcmp->dma_size, return -EIO); 356 snd_assert(bpos + len <= pcmp->dma_size, return -EIO); 357 if (copy_from_user(runtime->dma_area + bpos, src, len)) 358 return -EFAULT; 359 if (snd_gf1_pcm_use_dma && len > 32) { 360 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); 361 } else { 362 struct snd_gus_card *gus = pcmp->gus; 363 int err, w16, invert; 364 365 w16 = (snd_pcm_format_width(runtime->format) == 16); 366 invert = snd_pcm_format_unsigned(runtime->format); 367 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) 368 return err; 369 } 370 return 0; 371 } 372 373 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream, 374 int voice, 375 snd_pcm_uframes_t pos, 376 snd_pcm_uframes_t count) 377 { 378 struct snd_pcm_runtime *runtime = substream->runtime; 379 struct gus_pcm_private *pcmp = runtime->private_data; 380 unsigned int bpos, len; 381 382 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); 383 len = samples_to_bytes(runtime, count); 384 snd_assert(bpos <= pcmp->dma_size, return -EIO); 385 snd_assert(bpos + len <= pcmp->dma_size, return -EIO); 386 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count); 387 if (snd_gf1_pcm_use_dma && len > 32) { 388 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); 389 } else { 390 struct snd_gus_card *gus = pcmp->gus; 391 int err, w16, invert; 392 393 w16 = (snd_pcm_format_width(runtime->format) == 16); 394 invert = snd_pcm_format_unsigned(runtime->format); 395 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) 396 return err; 397 } 398 return 0; 399 } 400 401 static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream, 402 struct snd_pcm_hw_params *hw_params) 403 { 404 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 405 struct snd_pcm_runtime *runtime = substream->runtime; 406 struct gus_pcm_private *pcmp = runtime->private_data; 407 int err; 408 409 if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0) 410 return err; 411 if (err > 0) { /* change */ 412 struct snd_gf1_mem_block *block; 413 if (pcmp->memory > 0) { 414 snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory); 415 pcmp->memory = 0; 416 } 417 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc, 418 SNDRV_GF1_MEM_OWNER_DRIVER, 419 "GF1 PCM", 420 runtime->dma_bytes, 1, 32, 421 NULL)) == NULL) 422 return -ENOMEM; 423 pcmp->memory = block->ptr; 424 } 425 pcmp->voices = params_channels(hw_params); 426 if (pcmp->pvoices[0] == NULL) { 427 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 428 return -ENOMEM; 429 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave; 430 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume; 431 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change; 432 pcmp->pvoices[0]->private_data = pcmp; 433 } 434 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) { 435 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 436 return -ENOMEM; 437 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave; 438 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume; 439 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change; 440 pcmp->pvoices[1]->private_data = pcmp; 441 } else if (pcmp->voices == 1) { 442 if (pcmp->pvoices[1]) { 443 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 444 pcmp->pvoices[1] = NULL; 445 } 446 } 447 return 0; 448 } 449 450 static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream) 451 { 452 struct snd_pcm_runtime *runtime = substream->runtime; 453 struct gus_pcm_private *pcmp = runtime->private_data; 454 455 snd_pcm_lib_free_pages(substream); 456 if (pcmp->pvoices[0]) { 457 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]); 458 pcmp->pvoices[0] = NULL; 459 } 460 if (pcmp->pvoices[1]) { 461 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 462 pcmp->pvoices[1] = NULL; 463 } 464 if (pcmp->memory > 0) { 465 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory); 466 pcmp->memory = 0; 467 } 468 return 0; 469 } 470 471 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream) 472 { 473 struct snd_pcm_runtime *runtime = substream->runtime; 474 struct gus_pcm_private *pcmp = runtime->private_data; 475 476 pcmp->bpos = 0; 477 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream); 478 pcmp->block_size = snd_pcm_lib_period_bytes(substream); 479 pcmp->blocks = pcmp->dma_size / pcmp->block_size; 480 return 0; 481 } 482 483 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream, 484 int cmd) 485 { 486 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 487 struct snd_pcm_runtime *runtime = substream->runtime; 488 struct gus_pcm_private *pcmp = runtime->private_data; 489 int voice; 490 491 if (cmd == SNDRV_PCM_TRIGGER_START) { 492 snd_gf1_pcm_trigger_up(substream); 493 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 494 spin_lock(&pcmp->lock); 495 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE; 496 spin_unlock(&pcmp->lock); 497 voice = pcmp->pvoices[0]->number; 498 snd_gf1_stop_voices(gus, voice, voice); 499 if (pcmp->pvoices[1]) { 500 voice = pcmp->pvoices[1]->number; 501 snd_gf1_stop_voices(gus, voice, voice); 502 } 503 } else { 504 return -EINVAL; 505 } 506 return 0; 507 } 508 509 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream) 510 { 511 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 512 struct snd_pcm_runtime *runtime = substream->runtime; 513 struct gus_pcm_private *pcmp = runtime->private_data; 514 unsigned int pos; 515 unsigned char voice_ctrl; 516 517 pos = 0; 518 spin_lock(&gus->reg_lock); 519 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) { 520 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number); 521 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); 522 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory; 523 if (substream->runtime->channels > 1) 524 pos <<= 1; 525 pos = bytes_to_frames(runtime, pos); 526 } 527 spin_unlock(&gus->reg_lock); 528 return pos; 529 } 530 531 static struct snd_ratnum clock = { 532 .num = 9878400/16, 533 .den_min = 2, 534 .den_max = 257, 535 .den_step = 1, 536 }; 537 538 static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = { 539 .nrats = 1, 540 .rats = &clock, 541 }; 542 543 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream, 544 struct snd_pcm_hw_params *hw_params) 545 { 546 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 547 548 gus->c_dma_size = params_buffer_bytes(hw_params); 549 gus->c_period_size = params_period_bytes(hw_params); 550 gus->c_pos = 0; 551 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */ 552 if (params_channels(hw_params) > 1) 553 gus->gf1.pcm_rcntrl_reg |= 2; 554 if (gus->gf1.dma2 > 3) 555 gus->gf1.pcm_rcntrl_reg |= 4; 556 if (snd_pcm_format_unsigned(params_format(hw_params))) 557 gus->gf1.pcm_rcntrl_reg |= 0x80; 558 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 559 } 560 561 static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream) 562 { 563 return snd_pcm_lib_free_pages(substream); 564 } 565 566 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream) 567 { 568 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 569 struct snd_pcm_runtime *runtime = substream->runtime; 570 571 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2); 572 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 573 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 574 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ); 575 return 0; 576 } 577 578 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream, 579 int cmd) 580 { 581 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 582 int val; 583 584 if (cmd == SNDRV_PCM_TRIGGER_START) { 585 val = gus->gf1.pcm_rcntrl_reg; 586 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 587 val = 0; 588 } else { 589 return -EINVAL; 590 } 591 592 spin_lock(&gus->reg_lock); 593 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val); 594 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); 595 spin_unlock(&gus->reg_lock); 596 return 0; 597 } 598 599 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream) 600 { 601 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 602 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size); 603 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size); 604 return pos; 605 } 606 607 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus) 608 { 609 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 610 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 611 if (gus->pcm_cap_substream != NULL) { 612 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream); 613 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START); 614 gus->c_pos += gus->c_period_size; 615 snd_pcm_period_elapsed(gus->pcm_cap_substream); 616 } 617 } 618 619 static struct snd_pcm_hardware snd_gf1_pcm_playback = 620 { 621 .info = SNDRV_PCM_INFO_NONINTERLEAVED, 622 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 623 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), 624 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, 625 .rate_min = 5510, 626 .rate_max = 48000, 627 .channels_min = 1, 628 .channels_max = 2, 629 .buffer_bytes_max = (128*1024), 630 .period_bytes_min = 64, 631 .period_bytes_max = (128*1024), 632 .periods_min = 1, 633 .periods_max = 1024, 634 .fifo_size = 0, 635 }; 636 637 static struct snd_pcm_hardware snd_gf1_pcm_capture = 638 { 639 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 640 SNDRV_PCM_INFO_MMAP_VALID), 641 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8, 642 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 643 .rate_min = 5510, 644 .rate_max = 44100, 645 .channels_min = 1, 646 .channels_max = 2, 647 .buffer_bytes_max = (128*1024), 648 .period_bytes_min = 64, 649 .period_bytes_max = (128*1024), 650 .periods_min = 1, 651 .periods_max = 1024, 652 .fifo_size = 0, 653 }; 654 655 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime) 656 { 657 kfree(runtime->private_data); 658 } 659 660 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream) 661 { 662 struct gus_pcm_private *pcmp; 663 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 664 struct snd_pcm_runtime *runtime = substream->runtime; 665 int err; 666 667 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL); 668 if (pcmp == NULL) 669 return -ENOMEM; 670 pcmp->gus = gus; 671 spin_lock_init(&pcmp->lock); 672 init_waitqueue_head(&pcmp->sleep); 673 atomic_set(&pcmp->dma_count, 0); 674 675 runtime->private_data = pcmp; 676 runtime->private_free = snd_gf1_pcm_playback_free; 677 678 #if 0 679 printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer); 680 #endif 681 if ((err = snd_gf1_dma_init(gus)) < 0) 682 return err; 683 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE; 684 pcmp->substream = substream; 685 runtime->hw = snd_gf1_pcm_playback; 686 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max); 687 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max); 688 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64); 689 return 0; 690 } 691 692 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream) 693 { 694 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 695 struct snd_pcm_runtime *runtime = substream->runtime; 696 struct gus_pcm_private *pcmp = runtime->private_data; 697 698 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ)) 699 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n"); 700 701 snd_gf1_dma_done(gus); 702 return 0; 703 } 704 705 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream) 706 { 707 struct snd_pcm_runtime *runtime = substream->runtime; 708 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 709 710 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read; 711 gus->pcm_cap_substream = substream; 712 substream->runtime->hw = snd_gf1_pcm_capture; 713 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max); 714 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max); 715 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 716 &hw_constraints_clocks); 717 return 0; 718 } 719 720 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream) 721 { 722 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 723 724 gus->pcm_cap_substream = NULL; 725 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ); 726 return 0; 727 } 728 729 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 730 { 731 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 732 uinfo->count = 2; 733 uinfo->value.integer.min = 0; 734 uinfo->value.integer.max = 127; 735 return 0; 736 } 737 738 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 739 { 740 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 741 unsigned long flags; 742 743 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 744 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1; 745 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1; 746 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 747 return 0; 748 } 749 750 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 751 { 752 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 753 unsigned long flags; 754 int change; 755 unsigned int idx; 756 unsigned short val1, val2, vol; 757 struct gus_pcm_private *pcmp; 758 struct snd_gus_voice *pvoice; 759 760 val1 = ucontrol->value.integer.value[0] & 127; 761 val2 = ucontrol->value.integer.value[1] & 127; 762 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 763 change = val1 != gus->gf1.pcm_volume_level_left1 || 764 val2 != gus->gf1.pcm_volume_level_right1; 765 gus->gf1.pcm_volume_level_left1 = val1; 766 gus->gf1.pcm_volume_level_right1 = val2; 767 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4; 768 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4; 769 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 770 /* are we active? */ 771 spin_lock_irqsave(&gus->voice_alloc, flags); 772 for (idx = 0; idx < 32; idx++) { 773 pvoice = &gus->gf1.voices[idx]; 774 if (!pvoice->pcm) 775 continue; 776 pcmp = pvoice->private_data; 777 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 778 continue; 779 /* load real volume - better precision */ 780 spin_lock_irqsave(&gus->reg_lock, flags); 781 snd_gf1_select_voice(gus, pvoice->number); 782 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 783 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 784 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 785 pcmp->final_volume = 1; 786 spin_unlock_irqrestore(&gus->reg_lock, flags); 787 } 788 spin_unlock_irqrestore(&gus->voice_alloc, flags); 789 return change; 790 } 791 792 static struct snd_kcontrol_new snd_gf1_pcm_volume_control = 793 { 794 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 795 .name = "PCM Playback Volume", 796 .info = snd_gf1_pcm_volume_info, 797 .get = snd_gf1_pcm_volume_get, 798 .put = snd_gf1_pcm_volume_put 799 }; 800 801 static struct snd_kcontrol_new snd_gf1_pcm_volume_control1 = 802 { 803 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 804 .name = "GPCM Playback Volume", 805 .info = snd_gf1_pcm_volume_info, 806 .get = snd_gf1_pcm_volume_get, 807 .put = snd_gf1_pcm_volume_put 808 }; 809 810 static struct snd_pcm_ops snd_gf1_pcm_playback_ops = { 811 .open = snd_gf1_pcm_playback_open, 812 .close = snd_gf1_pcm_playback_close, 813 .ioctl = snd_pcm_lib_ioctl, 814 .hw_params = snd_gf1_pcm_playback_hw_params, 815 .hw_free = snd_gf1_pcm_playback_hw_free, 816 .prepare = snd_gf1_pcm_playback_prepare, 817 .trigger = snd_gf1_pcm_playback_trigger, 818 .pointer = snd_gf1_pcm_playback_pointer, 819 .copy = snd_gf1_pcm_playback_copy, 820 .silence = snd_gf1_pcm_playback_silence, 821 }; 822 823 static struct snd_pcm_ops snd_gf1_pcm_capture_ops = { 824 .open = snd_gf1_pcm_capture_open, 825 .close = snd_gf1_pcm_capture_close, 826 .ioctl = snd_pcm_lib_ioctl, 827 .hw_params = snd_gf1_pcm_capture_hw_params, 828 .hw_free = snd_gf1_pcm_capture_hw_free, 829 .prepare = snd_gf1_pcm_capture_prepare, 830 .trigger = snd_gf1_pcm_capture_trigger, 831 .pointer = snd_gf1_pcm_capture_pointer, 832 }; 833 834 int snd_gf1_pcm_new(struct snd_gus_card * gus, int pcm_dev, int control_index, struct snd_pcm ** rpcm) 835 { 836 struct snd_card *card; 837 struct snd_kcontrol *kctl; 838 struct snd_pcm *pcm; 839 struct snd_pcm_substream *substream; 840 int capture, err; 841 842 if (rpcm) 843 *rpcm = NULL; 844 card = gus->card; 845 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0; 846 err = snd_pcm_new(card, 847 gus->interwave ? "AMD InterWave" : "GF1", 848 pcm_dev, 849 gus->gf1.pcm_channels / 2, 850 capture, 851 &pcm); 852 if (err < 0) 853 return err; 854 pcm->private_data = gus; 855 /* playback setup */ 856 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops); 857 858 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next) 859 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV, 860 snd_dma_isa_data(), 861 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024); 862 863 pcm->info_flags = 0; 864 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; 865 if (capture) { 866 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops); 867 if (gus->gf1.dma2 == gus->gf1.dma1) 868 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX; 869 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 870 SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(), 871 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024); 872 } 873 strcpy(pcm->name, pcm->id); 874 if (gus->interwave) { 875 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A'); 876 } 877 strcat(pcm->name, " (synth)"); 878 gus->pcm = pcm; 879 880 if (gus->codec_flag) 881 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus); 882 else 883 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus); 884 if ((err = snd_ctl_add(card, kctl)) < 0) 885 return err; 886 kctl->id.index = control_index; 887 888 if (rpcm) 889 *rpcm = pcm; 890 return 0; 891 } 892 893