git.oblomov.eu Git - linux-2.6/blob - 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 typedef struct {
  46         snd_gus_card_t * gus;
  47         snd_pcm_substream_t * substream;
  48         spinlock_t lock;
  49         unsigned int voices;
  50         snd_gus_voice_t *pvoices[2];
  51         unsigned int memory;
  52         unsigned short flags;
  53         unsigned char voice_ctrl, ramp_ctrl;
  54         unsigned int bpos;
  55         unsigned int blocks;
  56         unsigned int block_size;
  57         unsigned int dma_size;
  58         wait_queue_head_t sleep;
  59         atomic_t dma_count;
  60         int final_volume;
  61 } gus_pcm_private_t;
  62
  63 static int snd_gf1_pcm_use_dma = 1;
  64
  65 static void snd_gf1_pcm_block_change_ack(snd_gus_card_t * gus, void *private_data)
  66 {
  67         gus_pcm_private_t *pcmp = private_data;
  68
  69         if (pcmp) {
  70                 atomic_dec(&pcmp->dma_count);
  71                 wake_up(&pcmp->sleep);
  72         }
  73 }
  74
  75 static int snd_gf1_pcm_block_change(snd_pcm_substream_t * substream,
  76                                     unsigned int offset,
  77                                     unsigned int addr,
  78                                     unsigned int count)
  79 {
  80         snd_gf1_dma_block_t block;
  81         snd_pcm_runtime_t *runtime = substream->runtime;
  82         gus_pcm_private_t *pcmp = runtime->private_data;
  83
  84         count += offset & 31;
  85         offset &= ~31;
  86         // snd_printk("block change - offset = 0x%x, count = 0x%x\n", offset, count);
  87         memset(&block, 0, sizeof(block));
  88         block.cmd = SNDRV_GF1_DMA_IRQ;
  89         if (snd_pcm_format_unsigned(runtime->format))
  90                 block.cmd |= SNDRV_GF1_DMA_UNSIGNED;
  91         if (snd_pcm_format_width(runtime->format) == 16)
  92                 block.cmd |= SNDRV_GF1_DMA_16BIT;
  93         block.addr = addr & ~31;
  94         block.buffer = runtime->dma_area + offset;
  95         block.buf_addr = runtime->dma_addr + offset;
  96         block.count = count;
  97         block.private_data = pcmp;
  98         block.ack = snd_gf1_pcm_block_change_ack;
  99         if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0))
 100                 atomic_inc(&pcmp->dma_count);
 101         return 0;
 102 }
 103
 104 static void snd_gf1_pcm_trigger_up(snd_pcm_substream_t * substream)
 105 {
 106         snd_pcm_runtime_t *runtime = substream->runtime;
 107         gus_pcm_private_t *pcmp = runtime->private_data;
 108         snd_gus_card_t * gus = pcmp->gus;
 109         unsigned long flags;
 110         unsigned char voice_ctrl, ramp_ctrl;
 111         unsigned short rate;
 112         unsigned int curr, begin, end;
 113         unsigned short vol;
 114         unsigned char pan;
 115         unsigned int voice;
 116
 117         if (substream == NULL)
 118                 return;
 119         spin_lock_irqsave(&pcmp->lock, flags);
 120         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
 121                 spin_unlock_irqrestore(&pcmp->lock, flags);
 122                 return;
 123         }
 124         pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE;
 125         pcmp->final_volume = 0;
 126         spin_unlock_irqrestore(&pcmp->lock, flags);
 127         rate = snd_gf1_translate_freq(gus, runtime->rate << 4);
 128         /* enable WAVE IRQ */
 129         voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20;
 130         /* enable RAMP IRQ + rollover */
 131         ramp_ctrl = 0x24;
 132         if (pcmp->blocks == 1) {
 133                 voice_ctrl |= 0x08;     /* loop enable */
 134                 ramp_ctrl &= ~0x04;     /* disable rollover */
 135         }
 136         for (voice = 0; voice < pcmp->voices; voice++) {
 137                 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels);
 138                 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels;
 139                 end = curr + (pcmp->block_size / runtime->channels);
 140                 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1;
 141                 // snd_printk("init: curr=0x%x, begin=0x%x, end=0x%x, ctrl=0x%x, ramp=0x%x, rate=0x%x\n", curr, begin, end, voice_ctrl, ramp_ctrl, rate);
 142                 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
 143                 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 144                 spin_lock_irqsave(&gus->reg_lock, flags);
 145                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 146                 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
 147                 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
 148                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
 149                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
 150                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
 151                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
 152                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
 153                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
 154                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
 155                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 156                 if (!gus->gf1.enh_mode) {
 157                         snd_gf1_delay(gus);
 158                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 159                 }
 160                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 161         }
 162         spin_lock_irqsave(&gus->reg_lock, flags);
 163         for (voice = 0; voice < pcmp->voices; voice++) {
 164                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 165                 if (gus->gf1.enh_mode)
 166                         snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00);   /* deactivate voice */
 167                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 168                 voice_ctrl &= ~0x20;
 169         }
 170         voice_ctrl |= 0x20;
 171         if (!gus->gf1.enh_mode) {
 172                 snd_gf1_delay(gus);
 173                 for (voice = 0; voice < pcmp->voices; voice++) {
 174                         snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 175                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 176                         voice_ctrl &= ~0x20;    /* disable IRQ for next voice */
 177                 }
 178         }
 179         spin_unlock_irqrestore(&gus->reg_lock, flags);
 180 }
 181
 182 static void snd_gf1_pcm_interrupt_wave(snd_gus_card_t * gus, snd_gus_voice_t *pvoice)
 183 {
 184         gus_pcm_private_t * pcmp;
 185         snd_pcm_runtime_t * runtime;
 186         unsigned char voice_ctrl, ramp_ctrl;
 187         unsigned int idx;
 188         unsigned int end, step;
 189
 190         if (!pvoice->private_data) {
 191                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
 192                 snd_gf1_smart_stop_voice(gus, pvoice->number);
 193                 return;
 194         }
 195         pcmp = pvoice->private_data;
 196         if (pcmp == NULL) {
 197                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
 198                 snd_gf1_smart_stop_voice(gus, pvoice->number);
 199                 return;
 200         }
 201         gus = pcmp->gus;
 202         runtime = pcmp->substream->runtime;
 203
 204         spin_lock(&gus->reg_lock);
 205         snd_gf1_select_voice(gus, pvoice->number);
 206         voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
 207         ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
 208 #if 0
 209         snd_gf1_select_voice(gus, pvoice->number);
 210         printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
 211         snd_gf1_select_voice(gus, pcmp->pvoices[1]->number);
 212         printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
 213         snd_gf1_select_voice(gus, pvoice->number);
 214 #endif
 215         pcmp->bpos++;
 216         pcmp->bpos %= pcmp->blocks;
 217         if (pcmp->bpos + 1 >= pcmp->blocks) {   /* last block? */
 218                 voice_ctrl |= 0x08;     /* enable loop */
 219         } else {
 220                 ramp_ctrl |= 0x04;      /* enable rollover */
 221         }
 222         end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
 223         end -= voice_ctrl & 4 ? 2 : 1;
 224         step = pcmp->dma_size / runtime->channels;
 225         voice_ctrl |= 0x20;
 226         if (!pcmp->final_volume) {
 227                 ramp_ctrl |= 0x20;
 228                 ramp_ctrl &= ~0x03;
 229         }
 230         for (idx = 0; idx < pcmp->voices; idx++, end += step) {
 231                 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
 232                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
 233                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 234                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 235                 voice_ctrl &= ~0x20;
 236         }
 237         if (!gus->gf1.enh_mode) {
 238                 snd_gf1_delay(gus);
 239                 voice_ctrl |= 0x20;
 240                 for (idx = 0; idx < pcmp->voices; idx++) {
 241                         snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
 242                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 243                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 244                         voice_ctrl &= ~0x20;
 245                 }
 246         }
 247         spin_unlock(&gus->reg_lock);
 248
 249         snd_pcm_period_elapsed(pcmp->substream);
 250 #if 0
 251         if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
 252             *runtime->state == SNDRV_PCM_STATE_RUNNING) {
 253                 end = pcmp->bpos * pcmp->block_size;
 254                 if (runtime->channels > 1) {
 255                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
 256                         snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
 257                 } else {
 258                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
 259                 }
 260         }
 261 #endif
 262 }
 263
 264 static void snd_gf1_pcm_interrupt_volume(snd_gus_card_t * gus, snd_gus_voice_t * pvoice)
 265 {
 266         unsigned short vol;
 267         int cvoice;
 268         gus_pcm_private_t *pcmp = pvoice->private_data;
 269
 270         /* stop ramp, but leave rollover bit untouched */
 271         spin_lock(&gus->reg_lock);
 272         snd_gf1_select_voice(gus, pvoice->number);
 273         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 274         spin_unlock(&gus->reg_lock);
 275         if (pcmp == NULL)
 276                 return;
 277         /* are we active? */
 278         if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
 279                 return;
 280         /* load real volume - better precision */
 281         cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1;
 282         if (pcmp->substream == NULL)
 283                 return;
 284         vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 285         spin_lock(&gus->reg_lock);
 286         snd_gf1_select_voice(gus, pvoice->number);
 287         snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
 288         pcmp->final_volume = 1;
 289         spin_unlock(&gus->reg_lock);
 290 }
 291
 292 static void snd_gf1_pcm_volume_change(snd_gus_card_t * gus)
 293 {
 294 }
 295
 296 static int snd_gf1_pcm_poke_block(snd_gus_card_t *gus, unsigned char *buf,
 297                                   unsigned int pos, unsigned int count,
 298                                   int w16, int invert)
 299 {
 300         unsigned int len;
 301         unsigned long flags;
 302
 303         // printk("poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", (int)buf, pos, count, gus->gf1.port);
 304         while (count > 0) {
 305                 len = count;
 306                 if (len > 512)          /* limit, to allow IRQ */
 307                         len = 512;
 308                 count -= len;
 309                 if (gus->interwave) {
 310                         spin_lock_irqsave(&gus->reg_lock, flags);
 311                         snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00));
 312                         snd_gf1_dram_addr(gus, pos);
 313                         if (w16) {
 314                                 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL));
 315                                 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1);
 316                         } else {
 317                                 outsb(GUSP(gus, DRAM), buf, len);
 318                         }
 319                         spin_unlock_irqrestore(&gus->reg_lock, flags);
 320                         buf += 512;
 321                         pos += 512;
 322                 } else {
 323                         invert = invert ? 0x80 : 0x00;
 324                         if (w16) {
 325                                 len >>= 1;
 326                                 while (len--) {
 327                                         snd_gf1_poke(gus, pos++, *buf++);
 328                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
 329                                 }
 330                         } else {
 331                                 while (len--)
 332                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
 333                         }
 334                 }
 335                 if (count > 0 && !in_interrupt()) {
 336                         set_current_state(TASK_INTERRUPTIBLE);
 337                         schedule_timeout(1);
 338                         if (signal_pending(current))
 339                                 return -EAGAIN;
 340                 }
 341         }
 342         return 0;
 343 }
 344
 345 static int snd_gf1_pcm_playback_copy(snd_pcm_substream_t *substream,
 346                                      int voice,
 347                                      snd_pcm_uframes_t pos,
 348                                      void __user *src,
 349                                      snd_pcm_uframes_t count)
 350 {
 351         snd_pcm_runtime_t *runtime = substream->runtime;
 352         gus_pcm_private_t *pcmp = runtime->private_data;
 353         unsigned int bpos, len;
 354
 355         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
 356         len = samples_to_bytes(runtime, count);
 357         snd_assert(bpos <= pcmp->dma_size, return -EIO);
 358         snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
 359         if (copy_from_user(runtime->dma_area + bpos, src, len))
 360                 return -EFAULT;
 361         if (snd_gf1_pcm_use_dma && len > 32) {
 362                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
 363         } else {
 364                 snd_gus_card_t *gus = pcmp->gus;
 365                 int err, w16, invert;
 366
 367                 w16 = (snd_pcm_format_width(runtime->format) == 16);
 368                 invert = snd_pcm_format_unsigned(runtime->format);
 369                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
 370                         return err;
 371         }
 372         return 0;
 373 }
 374
 375 static int snd_gf1_pcm_playback_silence(snd_pcm_substream_t *substream,
 376                                         int voice,
 377                                         snd_pcm_uframes_t pos,
 378                                         snd_pcm_uframes_t count)
 379 {
 380         snd_pcm_runtime_t *runtime = substream->runtime;
 381         gus_pcm_private_t *pcmp = runtime->private_data;
 382         unsigned int bpos, len;
 383
 384         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
 385         len = samples_to_bytes(runtime, count);
 386         snd_assert(bpos <= pcmp->dma_size, return -EIO);
 387         snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
 388         snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
 389         if (snd_gf1_pcm_use_dma && len > 32) {
 390                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
 391         } else {
 392                 snd_gus_card_t *gus = pcmp->gus;
 393                 int err, w16, invert;
 394
 395                 w16 = (snd_pcm_format_width(runtime->format) == 16);
 396                 invert = snd_pcm_format_unsigned(runtime->format);
 397                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
 398                         return err;
 399         }
 400         return 0;
 401 }
 402
 403 static int snd_gf1_pcm_playback_hw_params(snd_pcm_substream_t * substream,
 404                                           snd_pcm_hw_params_t * hw_params)
 405 {
 406         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 407         snd_pcm_runtime_t *runtime = substream->runtime;
 408         gus_pcm_private_t *pcmp = runtime->private_data;
 409         int err;
 410
 411         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 412                 return err;
 413         if (err > 0) {  /* change */
 414                 snd_gf1_mem_block_t *block;
 415                 if (pcmp->memory > 0) {
 416                         snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
 417                         pcmp->memory = 0;
 418                 }
 419                 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
 420                                                SNDRV_GF1_MEM_OWNER_DRIVER,
 421                                                "GF1 PCM",
 422                                                runtime->dma_bytes, 1, 32,
 423                                                NULL)) == NULL)
 424                         return -ENOMEM;
 425                 pcmp->memory = block->ptr;
 426         }
 427         pcmp->voices = params_channels(hw_params);
 428         if (pcmp->pvoices[0] == NULL) {
 429                 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
 430                         return -ENOMEM;
 431                 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
 432                 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
 433                 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
 434                 pcmp->pvoices[0]->private_data = pcmp;
 435         }
 436         if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
 437                 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
 438                         return -ENOMEM;
 439                 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
 440                 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
 441                 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
 442                 pcmp->pvoices[1]->private_data = pcmp;
 443         } else if (pcmp->voices == 1) {
 444                 if (pcmp->pvoices[1]) {
 445                         snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
 446                         pcmp->pvoices[1] = NULL;
 447                 }
 448         }
 449         return 0;
 450 }
 451
 452 static int snd_gf1_pcm_playback_hw_free(snd_pcm_substream_t * substream)
 453 {
 454         snd_pcm_runtime_t *runtime = substream->runtime;
 455         gus_pcm_private_t *pcmp = runtime->private_data;
 456
 457         snd_pcm_lib_free_pages(substream);
 458         if (pcmp->pvoices[0]) {
 459                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
 460                 pcmp->pvoices[0] = NULL;
 461         }
 462         if (pcmp->pvoices[1]) {
 463                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
 464                 pcmp->pvoices[1] = NULL;
 465         }
 466         if (pcmp->memory > 0) {
 467                 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
 468                 pcmp->memory = 0;
 469         }
 470         return 0;
 471 }
 472
 473 static int snd_gf1_pcm_playback_prepare(snd_pcm_substream_t * substream)
 474 {
 475         snd_pcm_runtime_t *runtime = substream->runtime;
 476         gus_pcm_private_t *pcmp = runtime->private_data;
 477
 478         pcmp->bpos = 0;
 479         pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
 480         pcmp->block_size = snd_pcm_lib_period_bytes(substream);
 481         pcmp->blocks = pcmp->dma_size / pcmp->block_size;
 482         return 0;
 483 }
 484
 485 static int snd_gf1_pcm_playback_trigger(snd_pcm_substream_t * substream,
 486                                         int cmd)
 487 {
 488         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 489         snd_pcm_runtime_t *runtime = substream->runtime;
 490         gus_pcm_private_t *pcmp = runtime->private_data;
 491         int voice;
 492
 493         if (cmd == SNDRV_PCM_TRIGGER_START) {
 494                 snd_gf1_pcm_trigger_up(substream);
 495         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 496                 spin_lock(&pcmp->lock);
 497                 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
 498                 spin_unlock(&pcmp->lock);
 499                 voice = pcmp->pvoices[0]->number;
 500                 snd_gf1_stop_voices(gus, voice, voice);
 501                 if (pcmp->pvoices[1]) {
 502                         voice = pcmp->pvoices[1]->number;
 503                         snd_gf1_stop_voices(gus, voice, voice);
 504                 }
 505         } else {
 506                 return -EINVAL;
 507         }
 508         return 0;
 509 }
 510
 511 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(snd_pcm_substream_t * substream)
 512 {
 513         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 514         snd_pcm_runtime_t *runtime = substream->runtime;
 515         gus_pcm_private_t *pcmp = runtime->private_data;
 516         unsigned int pos;
 517         unsigned char voice_ctrl;
 518
 519         pos = 0;
 520         spin_lock(&gus->reg_lock);
 521         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
 522                 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
 523                 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
 524                 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
 525                 if (substream->runtime->channels > 1)
 526                         pos <<= 1;
 527                 pos = bytes_to_frames(runtime, pos);
 528         }
 529         spin_unlock(&gus->reg_lock);
 530         return pos;
 531 }
 532
 533 static ratnum_t clock = {
 534         .num = 9878400/16,
 535         .den_min = 2,
 536         .den_max = 257,
 537         .den_step = 1,
 538 };
 539
 540 static snd_pcm_hw_constraint_ratnums_t hw_constraints_clocks  = {
 541         .nrats = 1,
 542         .rats = &clock,
 543 };
 544
 545 static int snd_gf1_pcm_capture_hw_params(snd_pcm_substream_t * substream,
 546                                          snd_pcm_hw_params_t * hw_params)
 547 {
 548         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 549
 550         gus->c_dma_size = params_buffer_bytes(hw_params);
 551         gus->c_period_size = params_period_bytes(hw_params);
 552         gus->c_pos = 0;
 553         gus->gf1.pcm_rcntrl_reg = 0x21;         /* IRQ at end, enable & start */
 554         if (params_channels(hw_params) > 1)
 555                 gus->gf1.pcm_rcntrl_reg |= 2;
 556         if (gus->gf1.dma2 > 3)
 557                 gus->gf1.pcm_rcntrl_reg |= 4;
 558         if (snd_pcm_format_unsigned(params_format(hw_params)))
 559                 gus->gf1.pcm_rcntrl_reg |= 0x80;
 560         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 561 }
 562
 563 static int snd_gf1_pcm_capture_hw_free(snd_pcm_substream_t * substream)
 564 {
 565         return snd_pcm_lib_free_pages(substream);
 566 }
 567
 568 static int snd_gf1_pcm_capture_prepare(snd_pcm_substream_t * substream)
 569 {
 570         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 571         snd_pcm_runtime_t *runtime = substream->runtime;
 572
 573         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
 574         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
 575         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
 576         snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
 577         return 0;
 578 }
 579
 580 static int snd_gf1_pcm_capture_trigger(snd_pcm_substream_t * substream,
 581                                        int cmd)
 582 {
 583         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 584         int val;
 585
 586         if (cmd == SNDRV_PCM_TRIGGER_START) {
 587                 val = gus->gf1.pcm_rcntrl_reg;
 588         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 589                 val = 0;
 590         } else {
 591                 return -EINVAL;
 592         }
 593
 594         spin_lock(&gus->reg_lock);
 595         snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
 596         snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
 597         spin_unlock(&gus->reg_lock);
 598         return 0;
 599 }
 600
 601 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(snd_pcm_substream_t * substream)
 602 {
 603         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 604         int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
 605         pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
 606         return pos;
 607 }
 608
 609 static void snd_gf1_pcm_interrupt_dma_read(snd_gus_card_t * gus)
 610 {
 611         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
 612         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
 613         if (gus->pcm_cap_substream != NULL) {
 614                 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream);
 615                 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
 616                 gus->c_pos += gus->c_period_size;
 617                 snd_pcm_period_elapsed(gus->pcm_cap_substream);
 618         }
 619 }
 620
 621 static snd_pcm_hardware_t snd_gf1_pcm_playback =
 622 {
 623         .info =                 SNDRV_PCM_INFO_NONINTERLEAVED,
 624         .formats                = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 625                                  SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
 626         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 627         .rate_min =             5510,
 628         .rate_max =             48000,
 629         .channels_min =         1,
 630         .channels_max =         2,
 631         .buffer_bytes_max =     (128*1024),
 632         .period_bytes_min =     64,
 633         .period_bytes_max =     (128*1024),
 634         .periods_min =          1,
 635         .periods_max =          1024,
 636         .fifo_size =            0,
 637 };
 638
 639 static snd_pcm_hardware_t snd_gf1_pcm_capture =
 640 {
 641         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 642                                  SNDRV_PCM_INFO_MMAP_VALID),
 643         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
 644         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
 645         .rate_min =             5510,
 646         .rate_max =             44100,
 647         .channels_min =         1,
 648         .channels_max =         2,
 649         .buffer_bytes_max =     (128*1024),
 650         .period_bytes_min =     64,
 651         .period_bytes_max =     (128*1024),
 652         .periods_min =          1,
 653         .periods_max =          1024,
 654         .fifo_size =            0,
 655 };
 656
 657 static void snd_gf1_pcm_playback_free(snd_pcm_runtime_t *runtime)
 658 {
 659         kfree(runtime->private_data);
 660 }
 661
 662 static int snd_gf1_pcm_playback_open(snd_pcm_substream_t *substream)
 663 {
 664         gus_pcm_private_t *pcmp;
 665         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 666         snd_pcm_runtime_t *runtime = substream->runtime;
 667         int err;
 668
 669         pcmp = kcalloc(1, sizeof(*pcmp), GFP_KERNEL);
 670         if (pcmp == NULL)
 671                 return -ENOMEM;
 672         pcmp->gus = gus;
 673         spin_lock_init(&pcmp->lock);
 674         init_waitqueue_head(&pcmp->sleep);
 675         atomic_set(&pcmp->dma_count, 0);
 676
 677         runtime->private_data = pcmp;
 678         runtime->private_free = snd_gf1_pcm_playback_free;
 679
 680 #if 0
 681         printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
 682 #endif
 683         if ((err = snd_gf1_dma_init(gus)) < 0)
 684                 return err;
 685         pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
 686         pcmp->substream = substream;
 687         runtime->hw = snd_gf1_pcm_playback;
 688         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
 689         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
 690         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
 691         return 0;
 692 }
 693
 694 static int snd_gf1_pcm_playback_close(snd_pcm_substream_t * substream)
 695 {
 696         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 697         snd_pcm_runtime_t *runtime = substream->runtime;
 698         gus_pcm_private_t *pcmp = runtime->private_data;
 699
 700         if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
 701                 snd_printk("gf1 pcm - serious DMA problem\n");
 702
 703         snd_gf1_dma_done(gus);
 704         return 0;
 705 }
 706
 707 static int snd_gf1_pcm_capture_open(snd_pcm_substream_t * substream)
 708 {
 709         snd_pcm_runtime_t *runtime = substream->runtime;
 710         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 711
 712         gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
 713         gus->pcm_cap_substream = substream;
 714         substream->runtime->hw = snd_gf1_pcm_capture;
 715         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
 716         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
 717         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 718                                       &hw_constraints_clocks);
 719         return 0;
 720 }
 721
 722 static int snd_gf1_pcm_capture_close(snd_pcm_substream_t * substream)
 723 {
 724         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 725
 726         gus->pcm_cap_substream = NULL;
 727         snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
 728         return 0;
 729 }
 730
 731 static void snd_gf1_pcm_free(snd_pcm_t *pcm)
 732 {
 733         snd_gus_card_t *gus = pcm->private_data;
 734         gus->pcm = NULL;
 735         snd_pcm_lib_preallocate_free_for_all(pcm);
 736 }
 737
 738 static int snd_gf1_pcm_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 739 {
 740         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 741         uinfo->count = 2;
 742         uinfo->value.integer.min = 0;
 743         uinfo->value.integer.max = 127;
 744         return 0;
 745 }
 746
 747 static int snd_gf1_pcm_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 748 {
 749         snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
 750         unsigned long flags;
 751
 752         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
 753         ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
 754         ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
 755         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
 756         return 0;
 757 }
 758
 759 static int snd_gf1_pcm_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 760 {
 761         snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
 762         unsigned long flags;
 763         int change;
 764         unsigned int idx;
 765         unsigned short val1, val2, vol;
 766         gus_pcm_private_t *pcmp;
 767         snd_gus_voice_t *pvoice;
 768
 769         val1 = ucontrol->value.integer.value[0] & 127;
 770         val2 = ucontrol->value.integer.value[1] & 127;
 771         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
 772         change = val1 != gus->gf1.pcm_volume_level_left1 ||
 773                  val2 != gus->gf1.pcm_volume_level_right1;
 774         gus->gf1.pcm_volume_level_left1 = val1;
 775         gus->gf1.pcm_volume_level_right1 = val2;
 776         gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
 777         gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
 778         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
 779         /* are we active? */
 780         spin_lock_irqsave(&gus->voice_alloc, flags);
 781         for (idx = 0; idx < 32; idx++) {
 782                 pvoice = &gus->gf1.voices[idx];
 783                 if (!pvoice->pcm)
 784                         continue;
 785                 pcmp = pvoice->private_data;
 786                 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
 787                         continue;
 788                 /* load real volume - better precision */
 789                 spin_lock_irqsave(&gus->reg_lock, flags);
 790                 snd_gf1_select_voice(gus, pvoice->number);
 791                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 792                 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 793                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
 794                 pcmp->final_volume = 1;
 795                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 796         }
 797         spin_unlock_irqrestore(&gus->voice_alloc, flags);
 798         return change;
 799 }
 800
 801 static snd_kcontrol_new_t snd_gf1_pcm_volume_control =
 802 {
 803         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 804         .name = "PCM Playback Volume",
 805         .info = snd_gf1_pcm_volume_info,
 806         .get = snd_gf1_pcm_volume_get,
 807         .put = snd_gf1_pcm_volume_put
 808 };
 809
 810 static snd_kcontrol_new_t snd_gf1_pcm_volume_control1 =
 811 {
 812         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 813         .name = "GPCM Playback Volume",
 814         .info = snd_gf1_pcm_volume_info,
 815         .get = snd_gf1_pcm_volume_get,
 816         .put = snd_gf1_pcm_volume_put
 817 };
 818
 819 static snd_pcm_ops_t snd_gf1_pcm_playback_ops = {
 820         .open =         snd_gf1_pcm_playback_open,
 821         .close =        snd_gf1_pcm_playback_close,
 822         .ioctl =        snd_pcm_lib_ioctl,
 823         .hw_params =    snd_gf1_pcm_playback_hw_params,
 824         .hw_free =      snd_gf1_pcm_playback_hw_free,
 825         .prepare =      snd_gf1_pcm_playback_prepare,
 826         .trigger =      snd_gf1_pcm_playback_trigger,
 827         .pointer =      snd_gf1_pcm_playback_pointer,
 828         .copy =         snd_gf1_pcm_playback_copy,
 829         .silence =      snd_gf1_pcm_playback_silence,
 830 };
 831
 832 static snd_pcm_ops_t snd_gf1_pcm_capture_ops = {
 833         .open =         snd_gf1_pcm_capture_open,
 834         .close =        snd_gf1_pcm_capture_close,
 835         .ioctl =        snd_pcm_lib_ioctl,
 836         .hw_params =    snd_gf1_pcm_capture_hw_params,
 837         .hw_free =      snd_gf1_pcm_capture_hw_free,
 838         .prepare =      snd_gf1_pcm_capture_prepare,
 839         .trigger =      snd_gf1_pcm_capture_trigger,
 840         .pointer =      snd_gf1_pcm_capture_pointer,
 841 };
 842
 843 int snd_gf1_pcm_new(snd_gus_card_t * gus, int pcm_dev, int control_index, snd_pcm_t ** rpcm)
 844 {
 845         snd_card_t *card;
 846         snd_kcontrol_t *kctl;
 847         snd_pcm_t *pcm;
 848         snd_pcm_substream_t *substream;
 849         int capture, err;
 850
 851         if (rpcm)
 852                 *rpcm = NULL;
 853         card = gus->card;
 854         capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
 855         err = snd_pcm_new(card,
 856                           gus->interwave ? "AMD InterWave" : "GF1",
 857                           pcm_dev,
 858                           gus->gf1.pcm_channels / 2,
 859                           capture,
 860                           &pcm);
 861         if (err < 0)
 862                 return err;
 863         pcm->private_data = gus;
 864         pcm->private_free = snd_gf1_pcm_free;
 865         /* playback setup */
 866         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
 867
 868         for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
 869                 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
 870                                               snd_dma_isa_data(),
 871                                               64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
 872
 873         pcm->info_flags = 0;
 874         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
 875         if (capture) {
 876                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
 877                 if (gus->gf1.dma2 == gus->gf1.dma1)
 878                         pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
 879                 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
 880                                               SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(),
 881                                               64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
 882         }
 883         strcpy(pcm->name, pcm->id);
 884         if (gus->interwave) {
 885                 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
 886         }
 887         strcat(pcm->name, " (synth)");
 888         gus->pcm = pcm;
 889
 890         if (gus->codec_flag)
 891                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
 892         else
 893                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
 894         if ((err = snd_ctl_add(card, kctl)) < 0)
 895                 return err;
 896         kctl->id.index = control_index;
 897
 898         if (rpcm)
 899                 *rpcm = pcm;
 900         return 0;
 901 }
 902