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 typedef struct { 46 snd_gus_card_t * gus; 47 snd_pcm_substream_t * substream; 48 spinlock_t lock; 49 unsigned int voices; 50 snd_gus_voice_t *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 } gus_pcm_private_t; 62 63 static int snd_gf1_pcm_use_dma = 1; 64 65 static void snd_gf1_pcm_block_change_ack(snd_gus_card_t * gus, void *private_data) 66 { 67 gus_pcm_private_t *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(snd_pcm_substream_t * substream, 76 unsigned int offset, 77 unsigned int addr, 78 unsigned int count) 79 { 80 snd_gf1_dma_block_t block; 81 snd_pcm_runtime_t *runtime = substream->runtime; 82 gus_pcm_private_t *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(snd_pcm_substream_t * substream) 105 { 106 snd_pcm_runtime_t *runtime = substream->runtime; 107 gus_pcm_private_t *pcmp = runtime->private_data; 108 snd_gus_card_t * 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(snd_gus_card_t * gus, snd_gus_voice_t *pvoice) 183 { 184 gus_pcm_private_t * pcmp; 185 snd_pcm_runtime_t * runtime; 186 unsigned char voice_ctrl, ramp_ctrl; 187 unsigned int idx; 188 unsigned int end, step; 189 190 if (!pvoice->private_data) { 191 snd_printd("snd_gf1_pcm: unknown wave irq?\n"); 192 snd_gf1_smart_stop_voice(gus, pvoice->number); 193 return; 194 } 195 pcmp = pvoice->private_data; 196 if (pcmp == NULL) { 197 snd_printd("snd_gf1_pcm: unknown wave irq?\n"); 198 snd_gf1_smart_stop_voice(gus, pvoice->number); 199 return; 200 } 201 gus = pcmp->gus; 202 runtime = pcmp->substream->runtime; 203 204 spin_lock(&gus->reg_lock); 205 snd_gf1_select_voice(gus, pvoice->number); 206 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b; 207 ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03; 208 #if 0 209 snd_gf1_select_voice(gus, pvoice->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, pcmp->pvoices[1]->number); 212 printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4)); 213 snd_gf1_select_voice(gus, pvoice->number); 214 #endif 215 pcmp->bpos++; 216 pcmp->bpos %= pcmp->blocks; 217 if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */ 218 voice_ctrl |= 0x08; /* enable loop */ 219 } else { 220 ramp_ctrl |= 0x04; /* enable rollover */ 221 } 222 end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels); 223 end -= voice_ctrl & 4 ? 2 : 1; 224 step = pcmp->dma_size / runtime->channels; 225 voice_ctrl |= 0x20; 226 if (!pcmp->final_volume) { 227 ramp_ctrl |= 0x20; 228 ramp_ctrl &= ~0x03; 229 } 230 for (idx = 0; idx < pcmp->voices; idx++, end += step) { 231 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 232 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); 233 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 234 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 235 voice_ctrl &= ~0x20; 236 } 237 if (!gus->gf1.enh_mode) { 238 snd_gf1_delay(gus); 239 voice_ctrl |= 0x20; 240 for (idx = 0; idx < pcmp->voices; idx++) { 241 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 242 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 243 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 244 voice_ctrl &= ~0x20; 245 } 246 } 247 spin_unlock(&gus->reg_lock); 248 249 snd_pcm_period_elapsed(pcmp->substream); 250 #if 0 251 if ((runtime->flags & SNDRV_PCM_FLG_MMAP) && 252 *runtime->state == SNDRV_PCM_STATE_RUNNING) { 253 end = pcmp->bpos * pcmp->block_size; 254 if (runtime->channels > 1) { 255 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2); 256 snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2); 257 } else { 258 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size); 259 } 260 } 261 #endif 262 } 263 264 static void snd_gf1_pcm_interrupt_volume(snd_gus_card_t * gus, snd_gus_voice_t * pvoice) 265 { 266 unsigned short vol; 267 int cvoice; 268 gus_pcm_private_t *pcmp = pvoice->private_data; 269 270 /* stop ramp, but leave rollover bit untouched */ 271 spin_lock(&gus->reg_lock); 272 snd_gf1_select_voice(gus, pvoice->number); 273 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 274 spin_unlock(&gus->reg_lock); 275 if (pcmp == NULL) 276 return; 277 /* are we active? */ 278 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 279 return; 280 /* load real volume - better precision */ 281 cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1; 282 if (pcmp->substream == NULL) 283 return; 284 vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 285 spin_lock(&gus->reg_lock); 286 snd_gf1_select_voice(gus, pvoice->number); 287 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 288 pcmp->final_volume = 1; 289 spin_unlock(&gus->reg_lock); 290 } 291 292 static void snd_gf1_pcm_volume_change(snd_gus_card_t * gus) 293 { 294 } 295 296 static int snd_gf1_pcm_poke_block(snd_gus_card_t *gus, unsigned char *buf, 297 unsigned int pos, unsigned int count, 298 int w16, int invert) 299 { 300 unsigned int len; 301 unsigned long flags; 302 303 // printk("poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", (int)buf, pos, count, gus->gf1.port); 304 while (count > 0) { 305 len = count; 306 if (len > 512) /* limit, to allow IRQ */ 307 len = 512; 308 count -= len; 309 if (gus->interwave) { 310 spin_lock_irqsave(&gus->reg_lock, flags); 311 snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00)); 312 snd_gf1_dram_addr(gus, pos); 313 if (w16) { 314 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL)); 315 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1); 316 } else { 317 outsb(GUSP(gus, DRAM), buf, len); 318 } 319 spin_unlock_irqrestore(&gus->reg_lock, flags); 320 buf += 512; 321 pos += 512; 322 } else { 323 invert = invert ? 0x80 : 0x00; 324 if (w16) { 325 len >>= 1; 326 while (len--) { 327 snd_gf1_poke(gus, pos++, *buf++); 328 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 329 } 330 } else { 331 while (len--) 332 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 333 } 334 } 335 if (count > 0 && !in_interrupt()) { 336 set_current_state(TASK_INTERRUPTIBLE); 337 schedule_timeout(1); 338 if (signal_pending(current)) 339 return -EAGAIN; 340 } 341 } 342 return 0; 343 } 344 345 static int snd_gf1_pcm_playback_copy(snd_pcm_substream_t *substream, 346 int voice, 347 snd_pcm_uframes_t pos, 348 void __user *src, 349 snd_pcm_uframes_t count) 350 { 351 snd_pcm_runtime_t *runtime = substream->runtime; 352 gus_pcm_private_t *pcmp = runtime->private_data; 353 unsigned int bpos, len; 354 355 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); 356 len = samples_to_bytes(runtime, count); 357 snd_assert(bpos <= pcmp->dma_size, return -EIO); 358 snd_assert(bpos + len <= pcmp->dma_size, return -EIO); 359 if (copy_from_user(runtime->dma_area + bpos, src, len)) 360 return -EFAULT; 361 if (snd_gf1_pcm_use_dma && len > 32) { 362 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); 363 } else { 364 snd_gus_card_t *gus = pcmp->gus; 365 int err, w16, invert; 366 367 w16 = (snd_pcm_format_width(runtime->format) == 16); 368 invert = snd_pcm_format_unsigned(runtime->format); 369 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) 370 return err; 371 } 372 return 0; 373 } 374 375 static int snd_gf1_pcm_playback_silence(snd_pcm_substream_t *substream, 376 int voice, 377 snd_pcm_uframes_t pos, 378 snd_pcm_uframes_t count) 379 { 380 snd_pcm_runtime_t *runtime = substream->runtime; 381 gus_pcm_private_t *pcmp = runtime->private_data; 382 unsigned int bpos, len; 383 384 bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); 385 len = samples_to_bytes(runtime, count); 386 snd_assert(bpos <= pcmp->dma_size, return -EIO); 387 snd_assert(bpos + len <= pcmp->dma_size, return -EIO); 388 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count); 389 if (snd_gf1_pcm_use_dma && len > 32) { 390 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); 391 } else { 392 snd_gus_card_t *gus = pcmp->gus; 393 int err, w16, invert; 394 395 w16 = (snd_pcm_format_width(runtime->format) == 16); 396 invert = snd_pcm_format_unsigned(runtime->format); 397 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) 398 return err; 399 } 400 return 0; 401 } 402 403 static int snd_gf1_pcm_playback_hw_params(snd_pcm_substream_t * substream, 404 snd_pcm_hw_params_t * hw_params) 405 { 406 snd_gus_card_t *gus = snd_pcm_substream_chip(substream); 407 snd_pcm_runtime_t *runtime = substream->runtime; 408 gus_pcm_private_t *pcmp = runtime->private_data; 409 int err; 410 411 if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0) 412 return err; 413 if (err > 0) { /* change */ 414 snd_gf1_mem_block_t *block; 415 if (pcmp->memory > 0) { 416 snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory); 417 pcmp->memory = 0; 418 } 419 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc, 420 SNDRV_GF1_MEM_OWNER_DRIVER, 421 "GF1 PCM", 422 runtime->dma_bytes, 1, 32, 423 NULL)) == NULL) 424 return -ENOMEM; 425 pcmp->memory = block->ptr; 426 } 427 pcmp->voices = params_channels(hw_params); 428 if (pcmp->pvoices[0] == NULL) { 429 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 430 return -ENOMEM; 431 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave; 432 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume; 433 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change; 434 pcmp->pvoices[0]->private_data = pcmp; 435 } 436 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) { 437 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL) 438 return -ENOMEM; 439 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave; 440 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume; 441 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change; 442 pcmp->pvoices[1]->private_data = pcmp; 443 } else if (pcmp->voices == 1) { 444 if (pcmp->pvoices[1]) { 445 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 446 pcmp->pvoices[1] = NULL; 447 } 448 } 449 return 0; 450 } 451 452 static int snd_gf1_pcm_playback_hw_free(snd_pcm_substream_t * substream) 453 { 454 snd_pcm_runtime_t *runtime = substream->runtime; 455 gus_pcm_private_t *pcmp = runtime->private_data; 456 457 snd_pcm_lib_free_pages(substream); 458 if (pcmp->pvoices[0]) { 459 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]); 460 pcmp->pvoices[0] = NULL; 461 } 462 if (pcmp->pvoices[1]) { 463 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 464 pcmp->pvoices[1] = NULL; 465 } 466 if (pcmp->memory > 0) { 467 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory); 468 pcmp->memory = 0; 469 } 470 return 0; 471 } 472 473 static int snd_gf1_pcm_playback_prepare(snd_pcm_substream_t * substream) 474 { 475 snd_pcm_runtime_t *runtime = substream->runtime; 476 gus_pcm_private_t *pcmp = runtime->private_data; 477 478 pcmp->bpos = 0; 479 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream); 480 pcmp->block_size = snd_pcm_lib_period_bytes(substream); 481 pcmp->blocks = pcmp->dma_size / pcmp->block_size; 482 return 0; 483 } 484 485 static int snd_gf1_pcm_playback_trigger(snd_pcm_substream_t * substream, 486 int cmd) 487 { 488 snd_gus_card_t *gus = snd_pcm_substream_chip(substream); 489 snd_pcm_runtime_t *runtime = substream->runtime; 490 gus_pcm_private_t *pcmp = runtime->private_data; 491 int voice; 492 493 if (cmd == SNDRV_PCM_TRIGGER_START) { 494 snd_gf1_pcm_trigger_up(substream); 495 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 496 spin_lock(&pcmp->lock); 497 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE; 498 spin_unlock(&pcmp->lock); 499 voice = pcmp->pvoices[0]->number; 500 snd_gf1_stop_voices(gus, voice, voice); 501 if (pcmp->pvoices[1]) { 502 voice = pcmp->pvoices[1]->number; 503 snd_gf1_stop_voices(gus, voice, voice); 504 } 505 } else { 506 return -EINVAL; 507 } 508 return 0; 509 } 510 511 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(snd_pcm_substream_t * substream) 512 { 513 snd_gus_card_t *gus = snd_pcm_substream_chip(substream); 514 snd_pcm_runtime_t *runtime = substream->runtime; 515 gus_pcm_private_t *pcmp = runtime->private_data; 516 unsigned int pos; 517 unsigned char voice_ctrl; 518 519 pos = 0; 520 spin_lock(&gus->reg_lock); 521 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) { 522 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number); 523 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); 524 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory; 525 if (substream->runtime->channels > 1) 526 pos <<= 1; 527 pos = bytes_to_frames(runtime, pos); 528 } 529 spin_unlock(&gus->reg_lock); 530 return pos; 531 } 532 533 static ratnum_t clock = { 534 .num = 9878400/16, 535 .den_min = 2, 536 .den_max = 257, 537 .den_step = 1, 538 }; 539 540 static snd_pcm_hw_constraint_ratnums_t hw_constraints_clocks = { 541 .nrats = 1, 542 .rats = &clock, 543 }; 544 545 static int snd_gf1_pcm_capture_hw_params(snd_pcm_substream_t * substream, 546 snd_pcm_hw_params_t * hw_params) 547 { 548 snd_gus_card_t *gus = snd_pcm_substream_chip(substream); 549 550 gus->c_dma_size = params_buffer_bytes(hw_params); 551 gus->c_period_size = params_period_bytes(hw_params); 552 gus->c_pos = 0; 553 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */ 554 if (params_channels(hw_params) > 1) 555 gus->gf1.pcm_rcntrl_reg |= 2; 556 if (gus->gf1.dma2 > 3) 557 gus->gf1.pcm_rcntrl_reg |= 4; 558 if (snd_pcm_format_unsigned(params_format(hw_params))) 559 gus->gf1.pcm_rcntrl_reg |= 0x80; 560 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 561 } 562 563 static int snd_gf1_pcm_capture_hw_free(snd_pcm_substream_t * substream) 564 { 565 return snd_pcm_lib_free_pages(substream); 566 } 567 568 static int snd_gf1_pcm_capture_prepare(snd_pcm_substream_t * substream) 569 { 570 snd_gus_card_t *gus = snd_pcm_substream_chip(substream); 571 snd_pcm_runtime_t *runtime = substream->runtime; 572 573 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2); 574 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 575 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 576 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ); 577 return 0; 578 } 579 580 static int snd_gf1_pcm_capture_trigger(snd_pcm_substream_t * substream, 581 int cmd) 582 { 583 snd_gus_card_t *gus = snd_pcm_substream_chip(substream); 584 int val; 585 586 if (cmd == SNDRV_PCM_TRIGGER_START) { 587 val = gus->gf1.pcm_rcntrl_reg; 588 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 589 val = 0; 590 } else { 591 return -EINVAL; 592 } 593 594 spin_lock(&gus->reg_lock); 595 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val); 596 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); 597 spin_unlock(&gus->reg_lock); 598 return 0; 599 } 600 601 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(snd_pcm_substream_t * substream) 602 { 603 snd_gus_card_t *gus = snd_pcm_substream_chip(substream); 604 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size); 605 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size); 606 return pos; 607 } 608 609 static void snd_gf1_pcm_interrupt_dma_read(snd_gus_card_t * gus) 610 { 611 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 612 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 613 if (gus->pcm_cap_substream != NULL) { 614 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream); 615 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START); 616 gus->c_pos += gus->c_period_size; 617 snd_pcm_period_elapsed(gus->pcm_cap_substream); 618 } 619 } 620 621 static snd_pcm_hardware_t snd_gf1_pcm_playback = 622 { 623 .info = SNDRV_PCM_INFO_NONINTERLEAVED, 624 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 625 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), 626 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, 627 .rate_min = 5510, 628 .rate_max = 48000, 629 .channels_min = 1, 630 .channels_max = 2, 631 .buffer_bytes_max = (128*1024), 632 .period_bytes_min = 64, 633 .period_bytes_max = (128*1024), 634 .periods_min = 1, 635 .periods_max = 1024, 636 .fifo_size = 0, 637 }; 638 639 static snd_pcm_hardware_t snd_gf1_pcm_capture = 640 { 641 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 642 SNDRV_PCM_INFO_MMAP_VALID), 643 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8, 644 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 645 .rate_min = 5510, 646 .rate_max = 44100, 647 .channels_min = 1, 648 .channels_max = 2, 649 .buffer_bytes_max = (128*1024), 650 .period_bytes_min = 64, 651 .period_bytes_max = (128*1024), 652 .periods_min = 1, 653 .periods_max = 1024, 654 .fifo_size = 0, 655 }; 656 657 static void snd_gf1_pcm_playback_free(snd_pcm_runtime_t *runtime) 658 { 659 kfree(runtime->private_data); 660 } 661 662 static int snd_gf1_pcm_playback_open(snd_pcm_substream_t *substream) 663 { 664 gus_pcm_private_t *pcmp; 665 snd_gus_card_t *gus = snd_pcm_substream_chip(substream); 666 snd_pcm_runtime_t *runtime = substream->runtime; 667 int err; 668 669 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL); 670 if (pcmp == NULL) 671 return -ENOMEM; 672 pcmp->gus = gus; 673 spin_lock_init(&pcmp->lock); 674 init_waitqueue_head(&pcmp->sleep); 675 atomic_set(&pcmp->dma_count, 0); 676 677 runtime->private_data = pcmp; 678 runtime->private_free = snd_gf1_pcm_playback_free; 679 680 #if 0 681 printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer); 682 #endif 683 if ((err = snd_gf1_dma_init(gus)) < 0) 684 return err; 685 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE; 686 pcmp->substream = substream; 687 runtime->hw = snd_gf1_pcm_playback; 688 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max); 689 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max); 690 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64); 691 return 0; 692 } 693 694 static int snd_gf1_pcm_playback_close(snd_pcm_substream_t * substream) 695 { 696 snd_gus_card_t *gus = snd_pcm_substream_chip(substream); 697 snd_pcm_runtime_t *runtime = substream->runtime; 698 gus_pcm_private_t *pcmp = runtime->private_data; 699 700 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ)) 701 snd_printk("gf1 pcm - serious DMA problem\n"); 702 703 snd_gf1_dma_done(gus); 704 return 0; 705 } 706 707 static int snd_gf1_pcm_capture_open(snd_pcm_substream_t * substream) 708 { 709 snd_pcm_runtime_t *runtime = substream->runtime; 710 snd_gus_card_t *gus = snd_pcm_substream_chip(substream); 711 712 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read; 713 gus->pcm_cap_substream = substream; 714 substream->runtime->hw = snd_gf1_pcm_capture; 715 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max); 716 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max); 717 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 718 &hw_constraints_clocks); 719 return 0; 720 } 721 722 static int snd_gf1_pcm_capture_close(snd_pcm_substream_t * substream) 723 { 724 snd_gus_card_t *gus = snd_pcm_substream_chip(substream); 725 726 gus->pcm_cap_substream = NULL; 727 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ); 728 return 0; 729 } 730 731 static void snd_gf1_pcm_free(snd_pcm_t *pcm) 732 { 733 snd_gus_card_t *gus = pcm->private_data; 734 gus->pcm = NULL; 735 snd_pcm_lib_preallocate_free_for_all(pcm); 736 } 737 738 static int snd_gf1_pcm_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo) 739 { 740 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 741 uinfo->count = 2; 742 uinfo->value.integer.min = 0; 743 uinfo->value.integer.max = 127; 744 return 0; 745 } 746 747 static int snd_gf1_pcm_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol) 748 { 749 snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol); 750 unsigned long flags; 751 752 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 753 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1; 754 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1; 755 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 756 return 0; 757 } 758 759 static int snd_gf1_pcm_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol) 760 { 761 snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol); 762 unsigned long flags; 763 int change; 764 unsigned int idx; 765 unsigned short val1, val2, vol; 766 gus_pcm_private_t *pcmp; 767 snd_gus_voice_t *pvoice; 768 769 val1 = ucontrol->value.integer.value[0] & 127; 770 val2 = ucontrol->value.integer.value[1] & 127; 771 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 772 change = val1 != gus->gf1.pcm_volume_level_left1 || 773 val2 != gus->gf1.pcm_volume_level_right1; 774 gus->gf1.pcm_volume_level_left1 = val1; 775 gus->gf1.pcm_volume_level_right1 = val2; 776 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4; 777 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4; 778 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 779 /* are we active? */ 780 spin_lock_irqsave(&gus->voice_alloc, flags); 781 for (idx = 0; idx < 32; idx++) { 782 pvoice = &gus->gf1.voices[idx]; 783 if (!pvoice->pcm) 784 continue; 785 pcmp = pvoice->private_data; 786 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 787 continue; 788 /* load real volume - better precision */ 789 spin_lock_irqsave(&gus->reg_lock, flags); 790 snd_gf1_select_voice(gus, pvoice->number); 791 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 792 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 793 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 794 pcmp->final_volume = 1; 795 spin_unlock_irqrestore(&gus->reg_lock, flags); 796 } 797 spin_unlock_irqrestore(&gus->voice_alloc, flags); 798 return change; 799 } 800 801 static snd_kcontrol_new_t snd_gf1_pcm_volume_control = 802 { 803 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 804 .name = "PCM 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 snd_kcontrol_new_t snd_gf1_pcm_volume_control1 = 811 { 812 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 813 .name = "GPCM Playback Volume", 814 .info = snd_gf1_pcm_volume_info, 815 .get = snd_gf1_pcm_volume_get, 816 .put = snd_gf1_pcm_volume_put 817 }; 818 819 static snd_pcm_ops_t snd_gf1_pcm_playback_ops = { 820 .open = snd_gf1_pcm_playback_open, 821 .close = snd_gf1_pcm_playback_close, 822 .ioctl = snd_pcm_lib_ioctl, 823 .hw_params = snd_gf1_pcm_playback_hw_params, 824 .hw_free = snd_gf1_pcm_playback_hw_free, 825 .prepare = snd_gf1_pcm_playback_prepare, 826 .trigger = snd_gf1_pcm_playback_trigger, 827 .pointer = snd_gf1_pcm_playback_pointer, 828 .copy = snd_gf1_pcm_playback_copy, 829 .silence = snd_gf1_pcm_playback_silence, 830 }; 831 832 static snd_pcm_ops_t snd_gf1_pcm_capture_ops = { 833 .open = snd_gf1_pcm_capture_open, 834 .close = snd_gf1_pcm_capture_close, 835 .ioctl = snd_pcm_lib_ioctl, 836 .hw_params = snd_gf1_pcm_capture_hw_params, 837 .hw_free = snd_gf1_pcm_capture_hw_free, 838 .prepare = snd_gf1_pcm_capture_prepare, 839 .trigger = snd_gf1_pcm_capture_trigger, 840 .pointer = snd_gf1_pcm_capture_pointer, 841 }; 842 843 int snd_gf1_pcm_new(snd_gus_card_t * gus, int pcm_dev, int control_index, snd_pcm_t ** rpcm) 844 { 845 snd_card_t *card; 846 snd_kcontrol_t *kctl; 847 snd_pcm_t *pcm; 848 snd_pcm_substream_t *substream; 849 int capture, err; 850 851 if (rpcm) 852 *rpcm = NULL; 853 card = gus->card; 854 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0; 855 err = snd_pcm_new(card, 856 gus->interwave ? "AMD InterWave" : "GF1", 857 pcm_dev, 858 gus->gf1.pcm_channels / 2, 859 capture, 860 &pcm); 861 if (err < 0) 862 return err; 863 pcm->private_data = gus; 864 pcm->private_free = snd_gf1_pcm_free; 865 /* playback setup */ 866 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops); 867 868 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next) 869 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV, 870 snd_dma_isa_data(), 871 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024); 872 873 pcm->info_flags = 0; 874 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; 875 if (capture) { 876 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops); 877 if (gus->gf1.dma2 == gus->gf1.dma1) 878 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX; 879 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 880 SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(), 881 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024); 882 } 883 strcpy(pcm->name, pcm->id); 884 if (gus->interwave) { 885 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A'); 886 } 887 strcat(pcm->name, " (synth)"); 888 gus->pcm = pcm; 889 890 if (gus->codec_flag) 891 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus); 892 else 893 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus); 894 if ((err = snd_ctl_add(card, kctl)) < 0) 895 return err; 896 kctl->id.index = control_index; 897 898 if (rpcm) 899 *rpcm = pcm; 900 return 0; 901 } 902 903