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