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 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); 438 if (!block) 439 return -ENOMEM; 440 pcmp->memory = block->ptr; 441 } 442 pcmp->voices = params_channels(hw_params); 443 if (pcmp->pvoices[0] == NULL) { 444 pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0); 445 if (!pcmp->pvoices[0]) 446 return -ENOMEM; 447 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave; 448 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume; 449 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change; 450 pcmp->pvoices[0]->private_data = pcmp; 451 } 452 if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) { 453 pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0); 454 if (!pcmp->pvoices[1]) 455 return -ENOMEM; 456 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave; 457 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume; 458 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change; 459 pcmp->pvoices[1]->private_data = pcmp; 460 } else if (pcmp->voices == 1) { 461 if (pcmp->pvoices[1]) { 462 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 463 pcmp->pvoices[1] = NULL; 464 } 465 } 466 return 0; 467 } 468 469 static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream) 470 { 471 struct snd_pcm_runtime *runtime = substream->runtime; 472 struct gus_pcm_private *pcmp = runtime->private_data; 473 474 if (pcmp->pvoices[0]) { 475 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]); 476 pcmp->pvoices[0] = NULL; 477 } 478 if (pcmp->pvoices[1]) { 479 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); 480 pcmp->pvoices[1] = NULL; 481 } 482 if (pcmp->memory > 0) { 483 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory); 484 pcmp->memory = 0; 485 } 486 return 0; 487 } 488 489 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream) 490 { 491 struct snd_pcm_runtime *runtime = substream->runtime; 492 struct gus_pcm_private *pcmp = runtime->private_data; 493 494 pcmp->bpos = 0; 495 pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream); 496 pcmp->block_size = snd_pcm_lib_period_bytes(substream); 497 pcmp->blocks = pcmp->dma_size / pcmp->block_size; 498 return 0; 499 } 500 501 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream, 502 int cmd) 503 { 504 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 505 struct snd_pcm_runtime *runtime = substream->runtime; 506 struct gus_pcm_private *pcmp = runtime->private_data; 507 int voice; 508 509 if (cmd == SNDRV_PCM_TRIGGER_START) { 510 snd_gf1_pcm_trigger_up(substream); 511 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 512 spin_lock(&pcmp->lock); 513 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE; 514 spin_unlock(&pcmp->lock); 515 voice = pcmp->pvoices[0]->number; 516 snd_gf1_stop_voices(gus, voice, voice); 517 if (pcmp->pvoices[1]) { 518 voice = pcmp->pvoices[1]->number; 519 snd_gf1_stop_voices(gus, voice, voice); 520 } 521 } else { 522 return -EINVAL; 523 } 524 return 0; 525 } 526 527 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream) 528 { 529 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 530 struct snd_pcm_runtime *runtime = substream->runtime; 531 struct gus_pcm_private *pcmp = runtime->private_data; 532 unsigned int pos; 533 unsigned char voice_ctrl; 534 535 pos = 0; 536 spin_lock(&gus->reg_lock); 537 if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) { 538 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number); 539 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); 540 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory; 541 if (substream->runtime->channels > 1) 542 pos <<= 1; 543 pos = bytes_to_frames(runtime, pos); 544 } 545 spin_unlock(&gus->reg_lock); 546 return pos; 547 } 548 549 static const struct snd_ratnum clock = { 550 .num = 9878400/16, 551 .den_min = 2, 552 .den_max = 257, 553 .den_step = 1, 554 }; 555 556 static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = { 557 .nrats = 1, 558 .rats = &clock, 559 }; 560 561 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream, 562 struct snd_pcm_hw_params *hw_params) 563 { 564 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 565 566 gus->c_dma_size = params_buffer_bytes(hw_params); 567 gus->c_period_size = params_period_bytes(hw_params); 568 gus->c_pos = 0; 569 gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */ 570 if (params_channels(hw_params) > 1) 571 gus->gf1.pcm_rcntrl_reg |= 2; 572 if (gus->gf1.dma2 > 3) 573 gus->gf1.pcm_rcntrl_reg |= 4; 574 if (snd_pcm_format_unsigned(params_format(hw_params))) 575 gus->gf1.pcm_rcntrl_reg |= 0x80; 576 return 0; 577 } 578 579 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream) 580 { 581 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 582 struct snd_pcm_runtime *runtime = substream->runtime; 583 584 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2); 585 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 586 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 587 snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ); 588 return 0; 589 } 590 591 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream, 592 int cmd) 593 { 594 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 595 int val; 596 597 if (cmd == SNDRV_PCM_TRIGGER_START) { 598 val = gus->gf1.pcm_rcntrl_reg; 599 } else if (cmd == SNDRV_PCM_TRIGGER_STOP) { 600 val = 0; 601 } else { 602 return -EINVAL; 603 } 604 605 spin_lock(&gus->reg_lock); 606 snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val); 607 snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); 608 spin_unlock(&gus->reg_lock); 609 return 0; 610 } 611 612 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream) 613 { 614 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 615 int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size); 616 pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size); 617 return pos; 618 } 619 620 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus) 621 { 622 snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */ 623 snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */ 624 if (gus->pcm_cap_substream != NULL) { 625 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream); 626 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START); 627 gus->c_pos += gus->c_period_size; 628 snd_pcm_period_elapsed(gus->pcm_cap_substream); 629 } 630 } 631 632 static const struct snd_pcm_hardware snd_gf1_pcm_playback = 633 { 634 .info = SNDRV_PCM_INFO_NONINTERLEAVED, 635 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | 636 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), 637 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, 638 .rate_min = 5510, 639 .rate_max = 48000, 640 .channels_min = 1, 641 .channels_max = 2, 642 .buffer_bytes_max = (128*1024), 643 .period_bytes_min = 64, 644 .period_bytes_max = (128*1024), 645 .periods_min = 1, 646 .periods_max = 1024, 647 .fifo_size = 0, 648 }; 649 650 static const struct snd_pcm_hardware snd_gf1_pcm_capture = 651 { 652 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 653 SNDRV_PCM_INFO_MMAP_VALID), 654 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8, 655 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100, 656 .rate_min = 5510, 657 .rate_max = 44100, 658 .channels_min = 1, 659 .channels_max = 2, 660 .buffer_bytes_max = (128*1024), 661 .period_bytes_min = 64, 662 .period_bytes_max = (128*1024), 663 .periods_min = 1, 664 .periods_max = 1024, 665 .fifo_size = 0, 666 }; 667 668 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime) 669 { 670 kfree(runtime->private_data); 671 } 672 673 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream) 674 { 675 struct gus_pcm_private *pcmp; 676 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 677 struct snd_pcm_runtime *runtime = substream->runtime; 678 int err; 679 680 pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL); 681 if (pcmp == NULL) 682 return -ENOMEM; 683 pcmp->gus = gus; 684 spin_lock_init(&pcmp->lock); 685 init_waitqueue_head(&pcmp->sleep); 686 atomic_set(&pcmp->dma_count, 0); 687 688 runtime->private_data = pcmp; 689 runtime->private_free = snd_gf1_pcm_playback_free; 690 691 #if 0 692 printk(KERN_DEBUG "playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", 693 (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer); 694 #endif 695 err = snd_gf1_dma_init(gus); 696 if (err < 0) 697 return err; 698 pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE; 699 pcmp->substream = substream; 700 runtime->hw = snd_gf1_pcm_playback; 701 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max); 702 snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max); 703 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64); 704 return 0; 705 } 706 707 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream) 708 { 709 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 710 struct snd_pcm_runtime *runtime = substream->runtime; 711 struct gus_pcm_private *pcmp = runtime->private_data; 712 713 if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ)) 714 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n"); 715 716 snd_gf1_dma_done(gus); 717 return 0; 718 } 719 720 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream) 721 { 722 struct snd_pcm_runtime *runtime = substream->runtime; 723 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 724 725 gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read; 726 gus->pcm_cap_substream = substream; 727 substream->runtime->hw = snd_gf1_pcm_capture; 728 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max); 729 snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max); 730 snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 731 &hw_constraints_clocks); 732 return 0; 733 } 734 735 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream) 736 { 737 struct snd_gus_card *gus = snd_pcm_substream_chip(substream); 738 739 gus->pcm_cap_substream = NULL; 740 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ); 741 return 0; 742 } 743 744 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 745 { 746 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 747 uinfo->count = 2; 748 uinfo->value.integer.min = 0; 749 uinfo->value.integer.max = 127; 750 return 0; 751 } 752 753 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 754 { 755 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 756 unsigned long flags; 757 758 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 759 ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1; 760 ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1; 761 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 762 return 0; 763 } 764 765 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) 766 { 767 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); 768 unsigned long flags; 769 int change; 770 unsigned int idx; 771 unsigned short val1, val2, vol; 772 struct gus_pcm_private *pcmp; 773 struct snd_gus_voice *pvoice; 774 775 val1 = ucontrol->value.integer.value[0] & 127; 776 val2 = ucontrol->value.integer.value[1] & 127; 777 spin_lock_irqsave(&gus->pcm_volume_level_lock, flags); 778 change = val1 != gus->gf1.pcm_volume_level_left1 || 779 val2 != gus->gf1.pcm_volume_level_right1; 780 gus->gf1.pcm_volume_level_left1 = val1; 781 gus->gf1.pcm_volume_level_right1 = val2; 782 gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4; 783 gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4; 784 spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags); 785 /* are we active? */ 786 spin_lock_irqsave(&gus->voice_alloc, flags); 787 for (idx = 0; idx < 32; idx++) { 788 pvoice = &gus->gf1.voices[idx]; 789 if (!pvoice->pcm) 790 continue; 791 pcmp = pvoice->private_data; 792 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) 793 continue; 794 /* load real volume - better precision */ 795 spin_lock(&gus->reg_lock); 796 snd_gf1_select_voice(gus, pvoice->number); 797 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 798 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; 799 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); 800 pcmp->final_volume = 1; 801 spin_unlock(&gus->reg_lock); 802 } 803 spin_unlock_irqrestore(&gus->voice_alloc, flags); 804 return change; 805 } 806 807 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control = 808 { 809 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 810 .name = "PCM Playback Volume", 811 .info = snd_gf1_pcm_volume_info, 812 .get = snd_gf1_pcm_volume_get, 813 .put = snd_gf1_pcm_volume_put 814 }; 815 816 static const struct snd_kcontrol_new snd_gf1_pcm_volume_control1 = 817 { 818 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 819 .name = "GPCM Playback Volume", 820 .info = snd_gf1_pcm_volume_info, 821 .get = snd_gf1_pcm_volume_get, 822 .put = snd_gf1_pcm_volume_put 823 }; 824 825 static const struct snd_pcm_ops snd_gf1_pcm_playback_ops = { 826 .open = snd_gf1_pcm_playback_open, 827 .close = snd_gf1_pcm_playback_close, 828 .hw_params = snd_gf1_pcm_playback_hw_params, 829 .hw_free = snd_gf1_pcm_playback_hw_free, 830 .prepare = snd_gf1_pcm_playback_prepare, 831 .trigger = snd_gf1_pcm_playback_trigger, 832 .pointer = snd_gf1_pcm_playback_pointer, 833 .copy_user = snd_gf1_pcm_playback_copy, 834 .copy_kernel = snd_gf1_pcm_playback_copy_kernel, 835 .fill_silence = snd_gf1_pcm_playback_silence, 836 }; 837 838 static const struct snd_pcm_ops snd_gf1_pcm_capture_ops = { 839 .open = snd_gf1_pcm_capture_open, 840 .close = snd_gf1_pcm_capture_close, 841 .hw_params = snd_gf1_pcm_capture_hw_params, 842 .prepare = snd_gf1_pcm_capture_prepare, 843 .trigger = snd_gf1_pcm_capture_trigger, 844 .pointer = snd_gf1_pcm_capture_pointer, 845 }; 846 847 int snd_gf1_pcm_new(struct snd_gus_card *gus, int pcm_dev, int control_index) 848 { 849 struct snd_card *card; 850 struct snd_kcontrol *kctl; 851 struct snd_pcm *pcm; 852 struct snd_pcm_substream *substream; 853 int capture, err; 854 855 card = gus->card; 856 capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0; 857 err = snd_pcm_new(card, 858 gus->interwave ? "AMD InterWave" : "GF1", 859 pcm_dev, 860 gus->gf1.pcm_channels / 2, 861 capture, 862 &pcm); 863 if (err < 0) 864 return err; 865 pcm->private_data = gus; 866 /* playback setup */ 867 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops); 868 869 for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next) 870 snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV, 871 card->dev, 872 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024); 873 874 pcm->info_flags = 0; 875 pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; 876 if (capture) { 877 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops); 878 if (gus->gf1.dma2 == gus->gf1.dma1) 879 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX; 880 snd_pcm_set_managed_buffer(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, 881 SNDRV_DMA_TYPE_DEV, card->dev, 882 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024); 883 } 884 strcpy(pcm->name, pcm->id); 885 if (gus->interwave) { 886 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A'); 887 } 888 strcat(pcm->name, " (synth)"); 889 gus->pcm = pcm; 890 891 if (gus->codec_flag) 892 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus); 893 else 894 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus); 895 err = snd_ctl_add(card, kctl); 896 if (err < 0) 897 return err; 898 kctl->id.index = control_index; 899 900 return 0; 901 } 902 903