1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz> 4 * Routines for control of GF1 chip (PCM things) 5 * 6 * InterWave chips supports interleaved DMA, but this feature isn't used in 7 * this code. 8 * 9 * This code emulates autoinit DMA transfer for playback, recording by GF1 10 * chip doesn't support autoinit DMA. 11 */ 12 13 #include <asm/dma.h> 14 #include <linux/slab.h> 15 #include <linux/sched/signal.h> 16 17 #include <sound/core.h> 18 #include <sound/control.h> 19 #include <sound/gus.h> 20 #include <sound/pcm_params.h> 21 #include "gus_tables.h" 22 23 /* maximum rate */ 24 25 #define SNDRV_GF1_PCM_RATE 48000 26 27 #define SNDRV_GF1_PCM_PFLG_NONE 0 28 #define SNDRV_GF1_PCM_PFLG_ACTIVE (1<<0) 29 #define SNDRV_GF1_PCM_PFLG_NEUTRAL (2<<0) 30 31 struct gus_pcm_private { 32 struct snd_gus_card * gus; 33 struct snd_pcm_substream *substream; 34 spinlock_t lock; 35 unsigned int voices; 36 struct snd_gus_voice *pvoices[2]; 37 unsigned int memory; 38 unsigned short flags; 39 unsigned char voice_ctrl, ramp_ctrl; 40 unsigned int bpos; 41 unsigned int blocks; 42 unsigned int block_size; 43 unsigned int dma_size; 44 wait_queue_head_t sleep; 45 atomic_t dma_count; 46 int final_volume; 47 }; 48 49 static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data) 50 { 51 struct gus_pcm_private *pcmp = private_data; 52 53 if (pcmp) { 54 atomic_dec(&pcmp->dma_count); 55 wake_up(&pcmp->sleep); 56 } 57 } 58 59 static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream, 60 unsigned int offset, 61 unsigned int addr, 62 unsigned int count) 63 { 64 struct snd_gf1_dma_block block; 65 struct snd_pcm_runtime *runtime = substream->runtime; 66 struct gus_pcm_private *pcmp = runtime->private_data; 67 68 count += offset & 31; 69 offset &= ~31; 70 /* 71 snd_printk(KERN_DEBUG "block change - offset = 0x%x, count = 0x%x\n", 72 offset, count); 73 */ 74 memset(&block, 0, sizeof(block)); 75 block.cmd = SNDRV_GF1_DMA_IRQ; 76 if (snd_pcm_format_unsigned(runtime->format)) 77 block.cmd |= SNDRV_GF1_DMA_UNSIGNED; 78 if (snd_pcm_format_width(runtime->format) == 16) 79 block.cmd |= SNDRV_GF1_DMA_16BIT; 80 block.addr = addr & ~31; 81 block.buffer = runtime->dma_area + offset; 82 block.buf_addr = runtime->dma_addr + offset; 83 block.count = count; 84 block.private_data = pcmp; 85 block.ack = snd_gf1_pcm_block_change_ack; 86 if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0)) 87 atomic_inc(&pcmp->dma_count); 88 return 0; 89 } 90 91 static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream) 92 { 93 struct snd_pcm_runtime *runtime = substream->runtime; 94 struct gus_pcm_private *pcmp = runtime->private_data; 95 struct snd_gus_card * gus = pcmp->gus; 96 unsigned long flags; 97 unsigned char voice_ctrl, ramp_ctrl; 98 unsigned short rate; 99 unsigned int curr, begin, end; 100 unsigned short vol; 101 unsigned char pan; 102 unsigned int voice; 103 104 spin_lock_irqsave(&pcmp->lock, flags); 105 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) { 106 spin_unlock_irqrestore(&pcmp->lock, flags); 107 return; 108 } 109 pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE; 110 pcmp->final_volume = 0; 111 spin_unlock_irqrestore(&pcmp->lock, flags); 112 rate = snd_gf1_translate_freq(gus, runtime->rate << 4); 113 /* enable WAVE IRQ */ 114 voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20; 115 /* enable RAMP IRQ + rollover */ 116 ramp_ctrl = 0x24; 117 if (pcmp->blocks == 1) { 118 voice_ctrl |= 0x08; /* loop enable */ 119 ramp_ctrl &= ~0x04; /* disable rollover */ 120 } 121 for (voice = 0; voice < pcmp->voices; voice++) { 122 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels); 123 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels; 124 end = curr + (pcmp->block_size / runtime->channels); 125 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1; 126 /* 127 snd_printk(KERN_DEBUG "init: curr=0x%x, begin=0x%x, end=0x%x, " 128 "ctrl=0x%x, ramp=0x%x, rate=0x%x\n", 129 curr, begin, end, voice_ctrl, ramp_ctrl, rate); 130 */ 131 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8; 132 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 133 spin_lock_irqsave(&gus->reg_lock, flags); 134 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 135 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan); 136 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate); 137 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4); 138 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); 139 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4); 140 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4); 141 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f); 142 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); 143 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8); 144 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 145 if (!gus->gf1.enh_mode) { 146 snd_gf1_delay(gus); 147 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 148 } 149 spin_unlock_irqrestore(&gus->reg_lock, flags); 150 } 151 spin_lock_irqsave(&gus->reg_lock, flags); 152 for (voice = 0; voice < pcmp->voices; voice++) { 153 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 154 if (gus->gf1.enh_mode) 155 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00); /* deactivate voice */ 156 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 157 voice_ctrl &= ~0x20; 158 } 159 voice_ctrl |= 0x20; 160 if (!gus->gf1.enh_mode) { 161 snd_gf1_delay(gus); 162 for (voice = 0; voice < pcmp->voices; voice++) { 163 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); 164 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 165 voice_ctrl &= ~0x20; /* disable IRQ for next voice */ 166 } 167 } 168 spin_unlock_irqrestore(&gus->reg_lock, flags); 169 } 170 171 static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus, 172 struct snd_gus_voice *pvoice) 173 { 174 struct gus_pcm_private * pcmp; 175 struct snd_pcm_runtime *runtime; 176 unsigned char voice_ctrl, ramp_ctrl; 177 unsigned int idx; 178 unsigned int end, step; 179 180 if (!pvoice->private_data) { 181 snd_printd("snd_gf1_pcm: unknown wave irq?\n"); 182 snd_gf1_smart_stop_voice(gus, pvoice->number); 183 return; 184 } 185 pcmp = pvoice->private_data; 186 if (pcmp == NULL) { 187 snd_printd("snd_gf1_pcm: unknown wave irq?\n"); 188 snd_gf1_smart_stop_voice(gus, pvoice->number); 189 return; 190 } 191 gus = pcmp->gus; 192 runtime = pcmp->substream->runtime; 193 194 spin_lock(&gus->reg_lock); 195 snd_gf1_select_voice(gus, pvoice->number); 196 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b; 197 ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03; 198 #if 0 199 snd_gf1_select_voice(gus, pvoice->number); 200 printk(KERN_DEBUG "position = 0x%x\n", 201 (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4)); 202 snd_gf1_select_voice(gus, pcmp->pvoices[1]->number); 203 printk(KERN_DEBUG "position = 0x%x\n", 204 (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4)); 205 snd_gf1_select_voice(gus, pvoice->number); 206 #endif 207 pcmp->bpos++; 208 pcmp->bpos %= pcmp->blocks; 209 if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */ 210 voice_ctrl |= 0x08; /* enable loop */ 211 } else { 212 ramp_ctrl |= 0x04; /* enable rollover */ 213 } 214 end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels); 215 end -= voice_ctrl & 4 ? 2 : 1; 216 step = pcmp->dma_size / runtime->channels; 217 voice_ctrl |= 0x20; 218 if (!pcmp->final_volume) { 219 ramp_ctrl |= 0x20; 220 ramp_ctrl &= ~0x03; 221 } 222 for (idx = 0; idx < pcmp->voices; idx++, end += step) { 223 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 224 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); 225 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); 226 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); 227 voice_ctrl &= ~0x20; 228 } 229 if (!gus->gf1.enh_mode) { 230 snd_gf1_delay(gus); 231 voice_ctrl |= 0x20; 232 for (idx = 0; idx < pcmp->voices; idx++) { 233 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); 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 } 239 spin_unlock(&gus->reg_lock); 240 241 snd_pcm_period_elapsed(pcmp->substream); 242 #if 0 243 if ((runtime->flags & SNDRV_PCM_FLG_MMAP) && 244 *runtime->state == SNDRV_PCM_STATE_RUNNING) { 245 end = pcmp->bpos * pcmp->block_size; 246 if (runtime->channels > 1) { 247 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2); 248 snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2); 249 } else { 250 snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size); 251 } 252 } 253 #endif 254 } 255 256 static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus, 257 struct snd_gus_voice * pvoice) 258 { 259 unsigned short vol; 260 int cvoice; 261 struct gus_pcm_private *pcmp = pvoice->private_data; 262 263 /* stop ramp, but leave rollover bit untouched */ 264 spin_lock(&gus->reg_lock); 265 snd_gf1_select_voice(gus, pvoice->number); 266 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 267 spin_unlock(&gus->reg_lock); 268 if (pcmp == NULL) 269 return; 270 /* are we active? */ 271 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 272 return; 273 /* load real volume - better precision */ 274 cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1; 275 if (pcmp->substream == NULL) 276 return; 277 vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 278 spin_lock(&gus->reg_lock); 279 snd_gf1_select_voice(gus, pvoice->number); 280 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 281 pcmp->final_volume = 1; 282 spin_unlock(&gus->reg_lock); 283 } 284 285 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus) 286 { 287 } 288 289 static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf, 290 unsigned int pos, unsigned int count, 291 int w16, int invert) 292 { 293 unsigned int len; 294 unsigned long flags; 295 296 /* 297 printk(KERN_DEBUG 298 "poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", 299 (int)buf, pos, count, gus->gf1.port); 300 */ 301 while (count > 0) { 302 len = count; 303 if (len > 512) /* limit, to allow IRQ */ 304 len = 512; 305 count -= len; 306 if (gus->interwave) { 307 spin_lock_irqsave(&gus->reg_lock, flags); 308 snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00)); 309 snd_gf1_dram_addr(gus, pos); 310 if (w16) { 311 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL)); 312 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1); 313 } else { 314 outsb(GUSP(gus, DRAM), buf, len); 315 } 316 spin_unlock_irqrestore(&gus->reg_lock, flags); 317 buf += 512; 318 pos += 512; 319 } else { 320 invert = invert ? 0x80 : 0x00; 321 if (w16) { 322 len >>= 1; 323 while (len--) { 324 snd_gf1_poke(gus, pos++, *buf++); 325 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 326 } 327 } else { 328 while (len--) 329 snd_gf1_poke(gus, pos++, *buf++ ^ invert); 330 } 331 } 332 if (count > 0 && !in_interrupt()) { 333 schedule_timeout_interruptible(1); 334 if (signal_pending(current)) 335 return -EAGAIN; 336 } 337 } 338 return 0; 339 } 340 341 static int get_bpos(struct gus_pcm_private *pcmp, int voice, unsigned int pos, 342 unsigned int len) 343 { 344 unsigned int bpos = pos + (voice * (pcmp->dma_size / 2)); 345 if (snd_BUG_ON(bpos > pcmp->dma_size)) 346 return -EIO; 347 if (snd_BUG_ON(bpos + len > pcmp->dma_size)) 348 return -EIO; 349 return bpos; 350 } 351 352 static int playback_copy_ack(struct snd_pcm_substream *substream, 353 unsigned int bpos, unsigned int len) 354 { 355 struct snd_pcm_runtime *runtime = substream->runtime; 356 struct gus_pcm_private *pcmp = runtime->private_data; 357 struct snd_gus_card *gus = pcmp->gus; 358 int w16, invert; 359 360 if (len > 32) 361 return snd_gf1_pcm_block_change(substream, bpos, 362 pcmp->memory + bpos, len); 363 364 w16 = (snd_pcm_format_width(runtime->format) == 16); 365 invert = snd_pcm_format_unsigned(runtime->format); 366 return snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, 367 pcmp->memory + bpos, len, w16, invert); 368 } 369 370 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream, 371 int voice, unsigned long pos, 372 struct iov_iter *src, unsigned long count) 373 { 374 struct snd_pcm_runtime *runtime = substream->runtime; 375 struct gus_pcm_private *pcmp = runtime->private_data; 376 unsigned int len = count; 377 int bpos; 378 379 bpos = get_bpos(pcmp, voice, pos, len); 380 if (bpos < 0) 381 return pos; 382 if (copy_from_iter(runtime->dma_area + bpos, len, src) != len) 383 return -EFAULT; 384 return playback_copy_ack(substream, bpos, len); 385 } 386 387 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream, 388 int voice, unsigned long pos, 389 unsigned long count) 390 { 391 struct snd_pcm_runtime *runtime = substream->runtime; 392 struct gus_pcm_private *pcmp = runtime->private_data; 393 unsigned int len = count; 394 int bpos; 395 396 bpos = get_bpos(pcmp, voice, pos, len); 397 if (bpos < 0) 398 return pos; 399 snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, 400 bytes_to_samples(runtime, count)); 401 return playback_copy_ack(substream, bpos, len); 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; 410 411 if (runtime->buffer_changed) { 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 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); 422 if (!block) 423 return -ENOMEM; 424 pcmp->memory = block->ptr; 425 } 426 pcmp->voices = params_channels(hw_params); 427 if (pcmp->pvoices[0] == NULL) { 428 pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0); 429 if (!pcmp->pvoices[0]) 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 pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0); 438 if (!pcmp->pvoices[1]) 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 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(struct snd_pcm_substream *substream) 474 { 475 struct snd_pcm_runtime *runtime = substream->runtime; 476 struct gus_pcm_private *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(struct snd_pcm_substream *substream, 486 int cmd) 487 { 488 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 489 struct snd_pcm_runtime *runtime = substream->runtime; 490 struct gus_pcm_private *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(struct snd_pcm_substream *substream) 512 { 513 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 514 struct snd_pcm_runtime *runtime = substream->runtime; 515 struct gus_pcm_private *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 const struct snd_ratnum clock = { 534 .num = 9878400/16, 535 .den_min = 2, 536 .den_max = 257, 537 .den_step = 1, 538 }; 539 540 static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = { 541 .nrats = 1, 542 .rats = &clock, 543 }; 544 545 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream, 546 struct snd_pcm_hw_params *hw_params) 547 { 548 struct snd_gus_card *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 0; 561 } 562 563 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream) 564 { 565 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 566 struct snd_pcm_runtime *runtime = substream->runtime; 567 568 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2); 569 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 570 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 571 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ); 572 return 0; 573 } 574 575 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream, 576 int cmd) 577 { 578 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 579 int val; 580 581 if (cmd == SNDRV_PCM_TRIGGER_START) { 582 val = gus->gf1.pcm_rcntrl_reg; 583 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 584 val = 0; 585 } else { 586 return -EINVAL; 587 } 588 589 spin_lock(&gus->reg_lock); 590 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val); 591 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); 592 spin_unlock(&gus->reg_lock); 593 return 0; 594 } 595 596 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream) 597 { 598 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 599 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size); 600 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size); 601 return pos; 602 } 603 604 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus) 605 { 606 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 607 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 608 if (gus->pcm_cap_substream != NULL) { 609 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream); 610 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START); 611 gus->c_pos += gus->c_period_size; 612 snd_pcm_period_elapsed(gus->pcm_cap_substream); 613 } 614 } 615 616 static const struct snd_pcm_hardware snd_gf1_pcm_playback = 617 { 618 .info = SNDRV_PCM_INFO_NONINTERLEAVED, 619 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 620 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), 621 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, 622 .rate_min = 5510, 623 .rate_max = 48000, 624 .channels_min = 1, 625 .channels_max = 2, 626 .buffer_bytes_max = (128*1024), 627 .period_bytes_min = 64, 628 .period_bytes_max = (128*1024), 629 .periods_min = 1, 630 .periods_max = 1024, 631 .fifo_size = 0, 632 }; 633 634 static const struct snd_pcm_hardware snd_gf1_pcm_capture = 635 { 636 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 637 SNDRV_PCM_INFO_MMAP_VALID), 638 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8, 639 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 640 .rate_min = 5510, 641 .rate_max = 44100, 642 .channels_min = 1, 643 .channels_max = 2, 644 .buffer_bytes_max = (128*1024), 645 .period_bytes_min = 64, 646 .period_bytes_max = (128*1024), 647 .periods_min = 1, 648 .periods_max = 1024, 649 .fifo_size = 0, 650 }; 651 652 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime) 653 { 654 kfree(runtime->private_data); 655 } 656 657 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream) 658 { 659 struct gus_pcm_private *pcmp; 660 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 661 struct snd_pcm_runtime *runtime = substream->runtime; 662 int err; 663 664 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL); 665 if (pcmp == NULL) 666 return -ENOMEM; 667 pcmp->gus = gus; 668 spin_lock_init(&pcmp->lock); 669 init_waitqueue_head(&pcmp->sleep); 670 atomic_set(&pcmp->dma_count, 0); 671 672 runtime->private_data = pcmp; 673 runtime->private_free = snd_gf1_pcm_playback_free; 674 675 #if 0 676 printk(KERN_DEBUG "playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", 677 (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer); 678 #endif 679 err = snd_gf1_dma_init(gus); 680 if (err < 0) 681 return err; 682 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE; 683 pcmp->substream = substream; 684 runtime->hw = snd_gf1_pcm_playback; 685 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max); 686 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max); 687 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64); 688 return 0; 689 } 690 691 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream) 692 { 693 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 694 struct snd_pcm_runtime *runtime = substream->runtime; 695 struct gus_pcm_private *pcmp = runtime->private_data; 696 697 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ)) 698 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n"); 699 700 snd_gf1_dma_done(gus); 701 return 0; 702 } 703 704 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream) 705 { 706 struct snd_pcm_runtime *runtime = substream->runtime; 707 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 708 709 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read; 710 gus->pcm_cap_substream = substream; 711 substream->runtime->hw = snd_gf1_pcm_capture; 712 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max); 713 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max); 714 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 715 &hw_constraints_clocks); 716 return 0; 717 } 718 719 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream) 720 { 721 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 722 723 gus->pcm_cap_substream = NULL; 724 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ); 725 return 0; 726 } 727 728 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 729 { 730 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 731 uinfo->count = 2; 732 uinfo->value.integer.min = 0; 733 uinfo->value.integer.max = 127; 734 return 0; 735 } 736 737 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 738 { 739 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 740 unsigned long flags; 741 742 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 743 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1; 744 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1; 745 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 746 return 0; 747 } 748 749 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 750 { 751 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 752 unsigned long flags; 753 int change; 754 unsigned int idx; 755 unsigned short val1, val2, vol; 756 struct gus_pcm_private *pcmp; 757 struct snd_gus_voice *pvoice; 758 759 val1 = ucontrol->value.integer.value[0] & 127; 760 val2 = ucontrol->value.integer.value[1] & 127; 761 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 762 change = val1 != gus->gf1.pcm_volume_level_left1 || 763 val2 != gus->gf1.pcm_volume_level_right1; 764 gus->gf1.pcm_volume_level_left1 = val1; 765 gus->gf1.pcm_volume_level_right1 = val2; 766 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4; 767 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4; 768 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 769 /* are we active? */ 770 spin_lock_irqsave(&gus->voice_alloc, flags); 771 for (idx = 0; idx < 32; idx++) { 772 pvoice = &gus->gf1.voices[idx]; 773 if (!pvoice->pcm) 774 continue; 775 pcmp = pvoice->private_data; 776 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 777 continue; 778 /* load real volume - better precision */ 779 spin_lock(&gus->reg_lock); 780 snd_gf1_select_voice(gus, pvoice->number); 781 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 782 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 783 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 784 pcmp->final_volume = 1; 785 spin_unlock(&gus->reg_lock); 786 } 787 spin_unlock_irqrestore(&gus->voice_alloc, flags); 788 return change; 789 } 790 791 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control = 792 { 793 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 794 .name = "PCM Playback Volume", 795 .info = snd_gf1_pcm_volume_info, 796 .get = snd_gf1_pcm_volume_get, 797 .put = snd_gf1_pcm_volume_put 798 }; 799 800 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control1 = 801 { 802 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 803 .name = "GPCM Playback Volume", 804 .info = snd_gf1_pcm_volume_info, 805 .get = snd_gf1_pcm_volume_get, 806 .put = snd_gf1_pcm_volume_put 807 }; 808 809 static const struct snd_pcm_ops snd_gf1_pcm_playback_ops = { 810 .open = snd_gf1_pcm_playback_open, 811 .close = snd_gf1_pcm_playback_close, 812 .hw_params = snd_gf1_pcm_playback_hw_params, 813 .hw_free = snd_gf1_pcm_playback_hw_free, 814 .prepare = snd_gf1_pcm_playback_prepare, 815 .trigger = snd_gf1_pcm_playback_trigger, 816 .pointer = snd_gf1_pcm_playback_pointer, 817 .copy = snd_gf1_pcm_playback_copy, 818 .fill_silence = snd_gf1_pcm_playback_silence, 819 }; 820 821 static const struct snd_pcm_ops snd_gf1_pcm_capture_ops = { 822 .open = snd_gf1_pcm_capture_open, 823 .close = snd_gf1_pcm_capture_close, 824 .hw_params = snd_gf1_pcm_capture_hw_params, 825 .prepare = snd_gf1_pcm_capture_prepare, 826 .trigger = snd_gf1_pcm_capture_trigger, 827 .pointer = snd_gf1_pcm_capture_pointer, 828 }; 829 830 int snd_gf1_pcm_new(struct snd_gus_card *gus, int pcm_dev, int control_index) 831 { 832 struct snd_card *card; 833 struct snd_kcontrol *kctl; 834 struct snd_pcm *pcm; 835 struct snd_pcm_substream *substream; 836 int capture, err; 837 838 card = gus->card; 839 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0; 840 err = snd_pcm_new(card, 841 gus->interwave ? "AMD InterWave" : "GF1", 842 pcm_dev, 843 gus->gf1.pcm_channels / 2, 844 capture, 845 &pcm); 846 if (err < 0) 847 return err; 848 pcm->private_data = gus; 849 /* playback setup */ 850 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops); 851 852 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next) 853 snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV, 854 card->dev, 855 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024); 856 857 pcm->info_flags = 0; 858 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; 859 if (capture) { 860 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops); 861 if (gus->gf1.dma2 == gus->gf1.dma1) 862 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX; 863 snd_pcm_set_managed_buffer(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 864 SNDRV_DMA_TYPE_DEV, card->dev, 865 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024); 866 } 867 strcpy(pcm->name, pcm->id); 868 if (gus->interwave) { 869 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A'); 870 } 871 strcat(pcm->name, " (synth)"); 872 gus->pcm = pcm; 873 874 if (gus->codec_flag) 875 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus); 876 else 877 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus); 878 kctl->id.index = control_index; 879 err = snd_ctl_add(card, kctl); 880 if (err < 0) 881 return err; 882 883 return 0; 884 } 885 886