sound/isa/gus/gus_pcm.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   3  *  Routines for control of GF1 chip (PCM things)
   4  *
   5  *  InterWave chips supports interleaved DMA, but this feature isn't used in
   6  *  this code.
   7  *
   8  *  This code emulates autoinit DMA transfer for playback, recording by GF1
   9  *  chip doesn't support autoinit DMA.
  10  *
  11  *
  12  *   This program is free software; you can redistribute it and/or modify
  13  *   it under the terms of the GNU General Public License as published by
  14  *   the Free Software Foundation; either version 2 of the License, or
  15  *   (at your option) any later version.
  16  *
  17  *   This program is distributed in the hope that it will be useful,
  18  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  *   GNU General Public License for more details.
  21  *
  22  *   You should have received a copy of the GNU General Public License
  23  *   along with this program; if not, write to the Free Software
  24  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  25  *
  26  */
  27
  28 #include <sound/driver.h>
  29 #include <asm/dma.h>
  30 #include <linux/slab.h>
  31 #include <sound/core.h>
  32 #include <sound/control.h>
  33 #include <sound/gus.h>
  34 #include <sound/pcm_params.h>
  35 #include "gus_tables.h"
  36
  37 /* maximum rate */
  38
  39 #define SNDRV_GF1_PCM_RATE              48000
  40
  41 #define SNDRV_GF1_PCM_PFLG_NONE         0
  42 #define SNDRV_GF1_PCM_PFLG_ACTIVE       (1<<0)
  43 #define SNDRV_GF1_PCM_PFLG_NEUTRAL      (2<<0)
  44
  45 struct gus_pcm_private {
  46         struct snd_gus_card * gus;
  47         struct snd_pcm_substream *substream;
  48         spinlock_t lock;
  49         unsigned int voices;
  50         struct snd_gus_voice *pvoices[2];
  51         unsigned int memory;
  52         unsigned short flags;
  53         unsigned char voice_ctrl, ramp_ctrl;
  54         unsigned int bpos;
  55         unsigned int blocks;
  56         unsigned int block_size;
  57         unsigned int dma_size;
  58         wait_queue_head_t sleep;
  59         atomic_t dma_count;
  60         int final_volume;
  61 };
  62
  63 static int snd_gf1_pcm_use_dma = 1;
  64
  65 static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data)
  66 {
  67         struct gus_pcm_private *pcmp = private_data;
  68
  69         if (pcmp) {
  70                 atomic_dec(&pcmp->dma_count);
  71                 wake_up(&pcmp->sleep);
  72         }
  73 }
  74
  75 static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream,
  76                                     unsigned int offset,
  77                                     unsigned int addr,
  78                                     unsigned int count)
  79 {
  80         struct snd_gf1_dma_block block;
  81         struct snd_pcm_runtime *runtime = substream->runtime;
  82         struct gus_pcm_private *pcmp = runtime->private_data;
  83
  84         count += offset & 31;
  85         offset &= ~31;
  86         // snd_printk("block change - offset = 0x%x, count = 0x%x\n", offset, count);
  87         memset(&block, 0, sizeof(block));
  88         block.cmd = SNDRV_GF1_DMA_IRQ;
  89         if (snd_pcm_format_unsigned(runtime->format))
  90                 block.cmd |= SNDRV_GF1_DMA_UNSIGNED;
  91         if (snd_pcm_format_width(runtime->format) == 16)
  92                 block.cmd |= SNDRV_GF1_DMA_16BIT;
  93         block.addr = addr & ~31;
  94         block.buffer = runtime->dma_area + offset;
  95         block.buf_addr = runtime->dma_addr + offset;
  96         block.count = count;
  97         block.private_data = pcmp;
  98         block.ack = snd_gf1_pcm_block_change_ack;
  99         if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0))
 100                 atomic_inc(&pcmp->dma_count);
 101         return 0;
 102 }
 103
 104 static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
 105 {
 106         struct snd_pcm_runtime *runtime = substream->runtime;
 107         struct gus_pcm_private *pcmp = runtime->private_data;
 108         struct snd_gus_card * gus = pcmp->gus;
 109         unsigned long flags;
 110         unsigned char voice_ctrl, ramp_ctrl;
 111         unsigned short rate;
 112         unsigned int curr, begin, end;
 113         unsigned short vol;
 114         unsigned char pan;
 115         unsigned int voice;
 116
 117         if (substream == NULL)
 118                 return;
 119         spin_lock_irqsave(&pcmp->lock, flags);
 120         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
 121                 spin_unlock_irqrestore(&pcmp->lock, flags);
 122                 return;
 123         }
 124         pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE;
 125         pcmp->final_volume = 0;
 126         spin_unlock_irqrestore(&pcmp->lock, flags);
 127         rate = snd_gf1_translate_freq(gus, runtime->rate << 4);
 128         /* enable WAVE IRQ */
 129         voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20;
 130         /* enable RAMP IRQ + rollover */
 131         ramp_ctrl = 0x24;
 132         if (pcmp->blocks == 1) {
 133                 voice_ctrl |= 0x08;     /* loop enable */
 134                 ramp_ctrl &= ~0x04;     /* disable rollover */
 135         }
 136         for (voice = 0; voice < pcmp->voices; voice++) {
 137                 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels);
 138                 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels;
 139                 end = curr + (pcmp->block_size / runtime->channels);
 140                 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1;
 141                 // snd_printk("init: curr=0x%x, begin=0x%x, end=0x%x, ctrl=0x%x, ramp=0x%x, rate=0x%x\n", curr, begin, end, voice_ctrl, ramp_ctrl, rate);
 142                 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
 143                 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 144                 spin_lock_irqsave(&gus->reg_lock, flags);
 145                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 146                 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
 147                 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
 148                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
 149                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
 150                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
 151                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
 152                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
 153                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
 154                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
 155                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 156                 if (!gus->gf1.enh_mode) {
 157                         snd_gf1_delay(gus);
 158                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 159                 }
 160                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 161         }
 162         spin_lock_irqsave(&gus->reg_lock, flags);
 163         for (voice = 0; voice < pcmp->voices; voice++) {
 164                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 165                 if (gus->gf1.enh_mode)
 166                         snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00);   /* deactivate voice */
 167                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 168                 voice_ctrl &= ~0x20;
 169         }
 170         voice_ctrl |= 0x20;
 171         if (!gus->gf1.enh_mode) {
 172                 snd_gf1_delay(gus);
 173                 for (voice = 0; voice < pcmp->voices; voice++) {
 174                         snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 175                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 176                         voice_ctrl &= ~0x20;    /* disable IRQ for next voice */
 177                 }
 178         }
 179         spin_unlock_irqrestore(&gus->reg_lock, flags);
 180 }
 181
 182 static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,
 183                                        struct snd_gus_voice *pvoice)
 184 {
 185         struct gus_pcm_private * pcmp;
 186         struct snd_pcm_runtime *runtime;
 187         unsigned char voice_ctrl, ramp_ctrl;
 188         unsigned int idx;
 189         unsigned int end, step;
 190
 191         if (!pvoice->private_data) {
 192                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
 193                 snd_gf1_smart_stop_voice(gus, pvoice->number);
 194                 return;
 195         }
 196         pcmp = pvoice->private_data;
 197         if (pcmp == NULL) {
 198                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
 199                 snd_gf1_smart_stop_voice(gus, pvoice->number);
 200                 return;
 201         }
 202         gus = pcmp->gus;
 203         runtime = pcmp->substream->runtime;
 204
 205         spin_lock(&gus->reg_lock);
 206         snd_gf1_select_voice(gus, pvoice->number);
 207         voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
 208         ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
 209 #if 0
 210         snd_gf1_select_voice(gus, pvoice->number);
 211         printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
 212         snd_gf1_select_voice(gus, pcmp->pvoices[1]->number);
 213         printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
 214         snd_gf1_select_voice(gus, pvoice->number);
 215 #endif
 216         pcmp->bpos++;
 217         pcmp->bpos %= pcmp->blocks;
 218         if (pcmp->bpos + 1 >= pcmp->blocks) {   /* last block? */
 219                 voice_ctrl |= 0x08;     /* enable loop */
 220         } else {
 221                 ramp_ctrl |= 0x04;      /* enable rollover */
 222         }
 223         end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
 224         end -= voice_ctrl & 4 ? 2 : 1;
 225         step = pcmp->dma_size / runtime->channels;
 226         voice_ctrl |= 0x20;
 227         if (!pcmp->final_volume) {
 228                 ramp_ctrl |= 0x20;
 229                 ramp_ctrl &= ~0x03;
 230         }
 231         for (idx = 0; idx < pcmp->voices; idx++, end += step) {
 232                 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
 233                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
 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         if (!gus->gf1.enh_mode) {
 239                 snd_gf1_delay(gus);
 240                 voice_ctrl |= 0x20;
 241                 for (idx = 0; idx < pcmp->voices; idx++) {
 242                         snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
 243                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 244                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 245                         voice_ctrl &= ~0x20;
 246                 }
 247         }
 248         spin_unlock(&gus->reg_lock);
 249
 250         snd_pcm_period_elapsed(pcmp->substream);
 251 #if 0
 252         if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
 253             *runtime->state == SNDRV_PCM_STATE_RUNNING) {
 254                 end = pcmp->bpos * pcmp->block_size;
 255                 if (runtime->channels > 1) {
 256                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
 257                         snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
 258                 } else {
 259                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
 260                 }
 261         }
 262 #endif
 263 }
 264
 265 static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,
 266                                          struct snd_gus_voice * pvoice)
 267 {
 268         unsigned short vol;
 269         int cvoice;
 270         struct gus_pcm_private *pcmp = pvoice->private_data;
 271
 272         /* stop ramp, but leave rollover bit untouched */
 273         spin_lock(&gus->reg_lock);
 274         snd_gf1_select_voice(gus, pvoice->number);
 275         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 276         spin_unlock(&gus->reg_lock);
 277         if (pcmp == NULL)
 278                 return;
 279         /* are we active? */
 280         if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
 281                 return;
 282         /* load real volume - better precision */
 283         cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1;
 284         if (pcmp->substream == NULL)
 285                 return;
 286         vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 287         spin_lock(&gus->reg_lock);
 288         snd_gf1_select_voice(gus, pvoice->number);
 289         snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
 290         pcmp->final_volume = 1;
 291         spin_unlock(&gus->reg_lock);
 292 }
 293
 294 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus)
 295 {
 296 }
 297
 298 static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
 299                                   unsigned int pos, unsigned int count,
 300                                   int w16, int invert)
 301 {
 302         unsigned int len;
 303         unsigned long flags;
 304
 305         // printk("poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", (int)buf, pos, count, gus->gf1.port);
 306         while (count > 0) {
 307                 len = count;
 308                 if (len > 512)          /* limit, to allow IRQ */
 309                         len = 512;
 310                 count -= len;
 311                 if (gus->interwave) {
 312                         spin_lock_irqsave(&gus->reg_lock, flags);
 313                         snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00));
 314                         snd_gf1_dram_addr(gus, pos);
 315                         if (w16) {
 316                                 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL));
 317                                 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1);
 318                         } else {
 319                                 outsb(GUSP(gus, DRAM), buf, len);
 320                         }
 321                         spin_unlock_irqrestore(&gus->reg_lock, flags);
 322                         buf += 512;
 323                         pos += 512;
 324                 } else {
 325                         invert = invert ? 0x80 : 0x00;
 326                         if (w16) {
 327                                 len >>= 1;
 328                                 while (len--) {
 329                                         snd_gf1_poke(gus, pos++, *buf++);
 330                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
 331                                 }
 332                         } else {
 333                                 while (len--)
 334                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
 335                         }
 336                 }
 337                 if (count > 0 && !in_interrupt()) {
 338                         schedule_timeout_interruptible(1);
 339                         if (signal_pending(current))
 340                                 return -EAGAIN;
 341                 }
 342         }
 343         return 0;
 344 }
 345
 346 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
 347                                      int voice,
 348                                      snd_pcm_uframes_t pos,
 349                                      void __user *src,
 350                                      snd_pcm_uframes_t count)
 351 {
 352         struct snd_pcm_runtime *runtime = substream->runtime;
 353         struct gus_pcm_private *pcmp = runtime->private_data;
 354         unsigned int bpos, len;
 355
 356         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
 357         len = samples_to_bytes(runtime, count);
 358         snd_assert(bpos <= pcmp->dma_size, return -EIO);
 359         snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
 360         if (copy_from_user(runtime->dma_area + bpos, src, len))
 361                 return -EFAULT;
 362         if (snd_gf1_pcm_use_dma && len > 32) {
 363                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
 364         } else {
 365                 struct snd_gus_card *gus = pcmp->gus;
 366                 int err, w16, invert;
 367
 368                 w16 = (snd_pcm_format_width(runtime->format) == 16);
 369                 invert = snd_pcm_format_unsigned(runtime->format);
 370                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
 371                         return err;
 372         }
 373         return 0;
 374 }
 375
 376 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
 377                                         int voice,
 378                                         snd_pcm_uframes_t pos,
 379                                         snd_pcm_uframes_t count)
 380 {
 381         struct snd_pcm_runtime *runtime = substream->runtime;
 382         struct gus_pcm_private *pcmp = runtime->private_data;
 383         unsigned int bpos, len;
 384
 385         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
 386         len = samples_to_bytes(runtime, count);
 387         snd_assert(bpos <= pcmp->dma_size, return -EIO);
 388         snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
 389         snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
 390         if (snd_gf1_pcm_use_dma && len > 32) {
 391                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
 392         } else {
 393                 struct snd_gus_card *gus = pcmp->gus;
 394                 int err, w16, invert;
 395
 396                 w16 = (snd_pcm_format_width(runtime->format) == 16);
 397                 invert = snd_pcm_format_unsigned(runtime->format);
 398                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
 399                         return err;
 400         }
 401         return 0;
 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         int err;
 411
 412         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 413                 return err;
 414         if (err > 0) {  /* change */
 415                 struct snd_gf1_mem_block *block;
 416                 if (pcmp->memory > 0) {
 417                         snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
 418                         pcmp->memory = 0;
 419                 }
 420                 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
 421                                                SNDRV_GF1_MEM_OWNER_DRIVER,
 422                                                "GF1 PCM",
 423                                                runtime->dma_bytes, 1, 32,
 424                                                NULL)) == NULL)
 425                         return -ENOMEM;
 426                 pcmp->memory = block->ptr;
 427         }
 428         pcmp->voices = params_channels(hw_params);
 429         if (pcmp->pvoices[0] == NULL) {
 430                 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
 431                         return -ENOMEM;
 432                 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
 433                 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
 434                 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
 435                 pcmp->pvoices[0]->private_data = pcmp;
 436         }
 437         if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
 438                 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
 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         snd_pcm_lib_free_pages(substream);
 459         if (pcmp->pvoices[0]) {
 460                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
 461                 pcmp->pvoices[0] = NULL;
 462         }
 463         if (pcmp->pvoices[1]) {
 464                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
 465                 pcmp->pvoices[1] = NULL;
 466         }
 467         if (pcmp->memory > 0) {
 468                 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
 469                 pcmp->memory = 0;
 470         }
 471         return 0;
 472 }
 473
 474 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream)
 475 {
 476         struct snd_pcm_runtime *runtime = substream->runtime;
 477         struct gus_pcm_private *pcmp = runtime->private_data;
 478
 479         pcmp->bpos = 0;
 480         pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
 481         pcmp->block_size = snd_pcm_lib_period_bytes(substream);
 482         pcmp->blocks = pcmp->dma_size / pcmp->block_size;
 483         return 0;
 484 }
 485
 486 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream,
 487                                         int cmd)
 488 {
 489         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 490         struct snd_pcm_runtime *runtime = substream->runtime;
 491         struct gus_pcm_private *pcmp = runtime->private_data;
 492         int voice;
 493
 494         if (cmd == SNDRV_PCM_TRIGGER_START) {
 495                 snd_gf1_pcm_trigger_up(substream);
 496         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 497                 spin_lock(&pcmp->lock);
 498                 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
 499                 spin_unlock(&pcmp->lock);
 500                 voice = pcmp->pvoices[0]->number;
 501                 snd_gf1_stop_voices(gus, voice, voice);
 502                 if (pcmp->pvoices[1]) {
 503                         voice = pcmp->pvoices[1]->number;
 504                         snd_gf1_stop_voices(gus, voice, voice);
 505                 }
 506         } else {
 507                 return -EINVAL;
 508         }
 509         return 0;
 510 }
 511
 512 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream)
 513 {
 514         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 515         struct snd_pcm_runtime *runtime = substream->runtime;
 516         struct gus_pcm_private *pcmp = runtime->private_data;
 517         unsigned int pos;
 518         unsigned char voice_ctrl;
 519
 520         pos = 0;
 521         spin_lock(&gus->reg_lock);
 522         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
 523                 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
 524                 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
 525                 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
 526                 if (substream->runtime->channels > 1)
 527                         pos <<= 1;
 528                 pos = bytes_to_frames(runtime, pos);
 529         }
 530         spin_unlock(&gus->reg_lock);
 531         return pos;
 532 }
 533
 534 static struct snd_ratnum clock = {
 535         .num = 9878400/16,
 536         .den_min = 2,
 537         .den_max = 257,
 538         .den_step = 1,
 539 };
 540
 541 static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks  = {
 542         .nrats = 1,
 543         .rats = &clock,
 544 };
 545
 546 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream,
 547                                          struct snd_pcm_hw_params *hw_params)
 548 {
 549         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 550
 551         gus->c_dma_size = params_buffer_bytes(hw_params);
 552         gus->c_period_size = params_period_bytes(hw_params);
 553         gus->c_pos = 0;
 554         gus->gf1.pcm_rcntrl_reg = 0x21;         /* IRQ at end, enable & start */
 555         if (params_channels(hw_params) > 1)
 556                 gus->gf1.pcm_rcntrl_reg |= 2;
 557         if (gus->gf1.dma2 > 3)
 558                 gus->gf1.pcm_rcntrl_reg |= 4;
 559         if (snd_pcm_format_unsigned(params_format(hw_params)))
 560                 gus->gf1.pcm_rcntrl_reg |= 0x80;
 561         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 562 }
 563
 564 static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream)
 565 {
 566         return snd_pcm_lib_free_pages(substream);
 567 }
 568
 569 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream)
 570 {
 571         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 572         struct snd_pcm_runtime *runtime = substream->runtime;
 573
 574         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
 575         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
 576         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
 577         snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
 578         return 0;
 579 }
 580
 581 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream,
 582                                        int cmd)
 583 {
 584         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 585         int val;
 586
 587         if (cmd == SNDRV_PCM_TRIGGER_START) {
 588                 val = gus->gf1.pcm_rcntrl_reg;
 589         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 590                 val = 0;
 591         } else {
 592                 return -EINVAL;
 593         }
 594
 595         spin_lock(&gus->reg_lock);
 596         snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
 597         snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
 598         spin_unlock(&gus->reg_lock);
 599         return 0;
 600 }
 601
 602 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream)
 603 {
 604         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 605         int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
 606         pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
 607         return pos;
 608 }
 609
 610 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)
 611 {
 612         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
 613         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
 614         if (gus->pcm_cap_substream != NULL) {
 615                 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream);
 616                 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
 617                 gus->c_pos += gus->c_period_size;
 618                 snd_pcm_period_elapsed(gus->pcm_cap_substream);
 619         }
 620 }
 621
 622 static struct snd_pcm_hardware snd_gf1_pcm_playback =
 623 {
 624         .info =                 SNDRV_PCM_INFO_NONINTERLEAVED,
 625         .formats                = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 626                                  SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
 627         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 628         .rate_min =             5510,
 629         .rate_max =             48000,
 630         .channels_min =         1,
 631         .channels_max =         2,
 632         .buffer_bytes_max =     (128*1024),
 633         .period_bytes_min =     64,
 634         .period_bytes_max =     (128*1024),
 635         .periods_min =          1,
 636         .periods_max =          1024,
 637         .fifo_size =            0,
 638 };
 639
 640 static struct snd_pcm_hardware snd_gf1_pcm_capture =
 641 {
 642         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 643                                  SNDRV_PCM_INFO_MMAP_VALID),
 644         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
 645         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
 646         .rate_min =             5510,
 647         .rate_max =             44100,
 648         .channels_min =         1,
 649         .channels_max =         2,
 650         .buffer_bytes_max =     (128*1024),
 651         .period_bytes_min =     64,
 652         .period_bytes_max =     (128*1024),
 653         .periods_min =          1,
 654         .periods_max =          1024,
 655         .fifo_size =            0,
 656 };
 657
 658 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime)
 659 {
 660         kfree(runtime->private_data);
 661 }
 662
 663 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream)
 664 {
 665         struct gus_pcm_private *pcmp;
 666         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 667         struct snd_pcm_runtime *runtime = substream->runtime;
 668         int err;
 669
 670         pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
 671         if (pcmp == NULL)
 672                 return -ENOMEM;
 673         pcmp->gus = gus;
 674         spin_lock_init(&pcmp->lock);
 675         init_waitqueue_head(&pcmp->sleep);
 676         atomic_set(&pcmp->dma_count, 0);
 677
 678         runtime->private_data = pcmp;
 679         runtime->private_free = snd_gf1_pcm_playback_free;
 680
 681 #if 0
 682         printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
 683 #endif
 684         if ((err = snd_gf1_dma_init(gus)) < 0)
 685                 return err;
 686         pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
 687         pcmp->substream = substream;
 688         runtime->hw = snd_gf1_pcm_playback;
 689         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
 690         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
 691         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
 692         return 0;
 693 }
 694
 695 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream)
 696 {
 697         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 698         struct snd_pcm_runtime *runtime = substream->runtime;
 699         struct gus_pcm_private *pcmp = runtime->private_data;
 700
 701         if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
 702                 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n");
 703
 704         snd_gf1_dma_done(gus);
 705         return 0;
 706 }
 707
 708 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream)
 709 {
 710         struct snd_pcm_runtime *runtime = substream->runtime;
 711         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 712
 713         gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
 714         gus->pcm_cap_substream = substream;
 715         substream->runtime->hw = snd_gf1_pcm_capture;
 716         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
 717         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
 718         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 719                                       &hw_constraints_clocks);
 720         return 0;
 721 }
 722
 723 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream)
 724 {
 725         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 726
 727         gus->pcm_cap_substream = NULL;
 728         snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
 729         return 0;
 730 }
 731
 732 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 733 {
 734         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 735         uinfo->count = 2;
 736         uinfo->value.integer.min = 0;
 737         uinfo->value.integer.max = 127;
 738         return 0;
 739 }
 740
 741 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 742 {
 743         struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
 744         unsigned long flags;
 745
 746         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
 747         ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
 748         ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
 749         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
 750         return 0;
 751 }
 752
 753 static int snd_gf1_pcm_volume_put(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         int change;
 758         unsigned int idx;
 759         unsigned short val1, val2, vol;
 760         struct gus_pcm_private *pcmp;
 761         struct snd_gus_voice *pvoice;
 762
 763         val1 = ucontrol->value.integer.value[0] & 127;
 764         val2 = ucontrol->value.integer.value[1] & 127;
 765         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
 766         change = val1 != gus->gf1.pcm_volume_level_left1 ||
 767                  val2 != gus->gf1.pcm_volume_level_right1;
 768         gus->gf1.pcm_volume_level_left1 = val1;
 769         gus->gf1.pcm_volume_level_right1 = val2;
 770         gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
 771         gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
 772         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
 773         /* are we active? */
 774         spin_lock_irqsave(&gus->voice_alloc, flags);
 775         for (idx = 0; idx < 32; idx++) {
 776                 pvoice = &gus->gf1.voices[idx];
 777                 if (!pvoice->pcm)
 778                         continue;
 779                 pcmp = pvoice->private_data;
 780                 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
 781                         continue;
 782                 /* load real volume - better precision */
 783                 spin_lock_irqsave(&gus->reg_lock, flags);
 784                 snd_gf1_select_voice(gus, pvoice->number);
 785                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 786                 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 787                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
 788                 pcmp->final_volume = 1;
 789                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 790         }
 791         spin_unlock_irqrestore(&gus->voice_alloc, flags);
 792         return change;
 793 }
 794
 795 static struct snd_kcontrol_new snd_gf1_pcm_volume_control =
 796 {
 797         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 798         .name = "PCM Playback Volume",
 799         .info = snd_gf1_pcm_volume_info,
 800         .get = snd_gf1_pcm_volume_get,
 801         .put = snd_gf1_pcm_volume_put
 802 };
 803
 804 static struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
 805 {
 806         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 807         .name = "GPCM Playback Volume",
 808         .info = snd_gf1_pcm_volume_info,
 809         .get = snd_gf1_pcm_volume_get,
 810         .put = snd_gf1_pcm_volume_put
 811 };
 812
 813 static struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
 814         .open =         snd_gf1_pcm_playback_open,
 815         .close =        snd_gf1_pcm_playback_close,
 816         .ioctl =        snd_pcm_lib_ioctl,
 817         .hw_params =    snd_gf1_pcm_playback_hw_params,
 818         .hw_free =      snd_gf1_pcm_playback_hw_free,
 819         .prepare =      snd_gf1_pcm_playback_prepare,
 820         .trigger =      snd_gf1_pcm_playback_trigger,
 821         .pointer =      snd_gf1_pcm_playback_pointer,
 822         .copy =         snd_gf1_pcm_playback_copy,
 823         .silence =      snd_gf1_pcm_playback_silence,
 824 };
 825
 826 static struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
 827         .open =         snd_gf1_pcm_capture_open,
 828         .close =        snd_gf1_pcm_capture_close,
 829         .ioctl =        snd_pcm_lib_ioctl,
 830         .hw_params =    snd_gf1_pcm_capture_hw_params,
 831         .hw_free =      snd_gf1_pcm_capture_hw_free,
 832         .prepare =      snd_gf1_pcm_capture_prepare,
 833         .trigger =      snd_gf1_pcm_capture_trigger,
 834         .pointer =      snd_gf1_pcm_capture_pointer,
 835 };
 836
 837 int snd_gf1_pcm_new(struct snd_gus_card * gus, int pcm_dev, int control_index, struct snd_pcm ** rpcm)
 838 {
 839         struct snd_card *card;
 840         struct snd_kcontrol *kctl;
 841         struct snd_pcm *pcm;
 842         struct snd_pcm_substream *substream;
 843         int capture, err;
 844
 845         if (rpcm)
 846                 *rpcm = NULL;
 847         card = gus->card;
 848         capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
 849         err = snd_pcm_new(card,
 850                           gus->interwave ? "AMD InterWave" : "GF1",
 851                           pcm_dev,
 852                           gus->gf1.pcm_channels / 2,
 853                           capture,
 854                           &pcm);
 855         if (err < 0)
 856                 return err;
 857         pcm->private_data = gus;
 858         /* playback setup */
 859         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
 860
 861         for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
 862                 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
 863                                               snd_dma_isa_data(),
 864                                               64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
 865
 866         pcm->info_flags = 0;
 867         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
 868         if (capture) {
 869                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
 870                 if (gus->gf1.dma2 == gus->gf1.dma1)
 871                         pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
 872                 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
 873                                               SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(),
 874                                               64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
 875         }
 876         strcpy(pcm->name, pcm->id);
 877         if (gus->interwave) {
 878                 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
 879         }
 880         strcat(pcm->name, " (synth)");
 881         gus->pcm = pcm;
 882
 883         if (gus->codec_flag)
 884                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
 885         else
 886                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
 887         if ((err = snd_ctl_add(card, kctl)) < 0)
 888                 return err;
 889         kctl->id.index = control_index;
 890
 891         if (rpcm)
 892                 *rpcm = pcm;
 893         return 0;
 894 }
 895