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                         schedule_timeout_interruptible(1);
 337                         if (signal_pending(current))
 338                                 return -EAGAIN;
 339                 }
 340         }
 341         return 0;
 342 }
 343
 344 static int snd_gf1_pcm_playback_copy(snd_pcm_substream_t *substream,
 345                                      int voice,
 346                                      snd_pcm_uframes_t pos,
 347                                      void __user *src,
 348                                      snd_pcm_uframes_t count)
 349 {
 350         snd_pcm_runtime_t *runtime = substream->runtime;
 351         gus_pcm_private_t *pcmp = runtime->private_data;
 352         unsigned int bpos, len;
 353
 354         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
 355         len = samples_to_bytes(runtime, count);
 356         snd_assert(bpos <= pcmp->dma_size, return -EIO);
 357         snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
 358         if (copy_from_user(runtime->dma_area + bpos, src, len))
 359                 return -EFAULT;
 360         if (snd_gf1_pcm_use_dma && len > 32) {
 361                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
 362         } else {
 363                 snd_gus_card_t *gus = pcmp->gus;
 364                 int err, w16, invert;
 365
 366                 w16 = (snd_pcm_format_width(runtime->format) == 16);
 367                 invert = snd_pcm_format_unsigned(runtime->format);
 368                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
 369                         return err;
 370         }
 371         return 0;
 372 }
 373
 374 static int snd_gf1_pcm_playback_silence(snd_pcm_substream_t *substream,
 375                                         int voice,
 376                                         snd_pcm_uframes_t pos,
 377                                         snd_pcm_uframes_t count)
 378 {
 379         snd_pcm_runtime_t *runtime = substream->runtime;
 380         gus_pcm_private_t *pcmp = runtime->private_data;
 381         unsigned int bpos, len;
 382
 383         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
 384         len = samples_to_bytes(runtime, count);
 385         snd_assert(bpos <= pcmp->dma_size, return -EIO);
 386         snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
 387         snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
 388         if (snd_gf1_pcm_use_dma && len > 32) {
 389                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
 390         } else {
 391                 snd_gus_card_t *gus = pcmp->gus;
 392                 int err, w16, invert;
 393
 394                 w16 = (snd_pcm_format_width(runtime->format) == 16);
 395                 invert = snd_pcm_format_unsigned(runtime->format);
 396                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
 397                         return err;
 398         }
 399         return 0;
 400 }
 401
 402 static int snd_gf1_pcm_playback_hw_params(snd_pcm_substream_t * substream,
 403                                           snd_pcm_hw_params_t * hw_params)
 404 {
 405         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 406         snd_pcm_runtime_t *runtime = substream->runtime;
 407         gus_pcm_private_t *pcmp = runtime->private_data;
 408         int err;
 409
 410         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 411                 return err;
 412         if (err > 0) {  /* change */
 413                 snd_gf1_mem_block_t *block;
 414                 if (pcmp->memory > 0) {
 415                         snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
 416                         pcmp->memory = 0;
 417                 }
 418                 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
 419                                                SNDRV_GF1_MEM_OWNER_DRIVER,
 420                                                "GF1 PCM",
 421                                                runtime->dma_bytes, 1, 32,
 422                                                NULL)) == NULL)
 423                         return -ENOMEM;
 424                 pcmp->memory = block->ptr;
 425         }
 426         pcmp->voices = params_channels(hw_params);
 427         if (pcmp->pvoices[0] == NULL) {
 428                 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
 429                         return -ENOMEM;
 430                 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
 431                 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
 432                 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
 433                 pcmp->pvoices[0]->private_data = pcmp;
 434         }
 435         if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
 436                 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
 437                         return -ENOMEM;
 438                 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
 439                 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
 440                 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
 441                 pcmp->pvoices[1]->private_data = pcmp;
 442         } else if (pcmp->voices == 1) {
 443                 if (pcmp->pvoices[1]) {
 444                         snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
 445                         pcmp->pvoices[1] = NULL;
 446                 }
 447         }
 448         return 0;
 449 }
 450
 451 static int snd_gf1_pcm_playback_hw_free(snd_pcm_substream_t * substream)
 452 {
 453         snd_pcm_runtime_t *runtime = substream->runtime;
 454         gus_pcm_private_t *pcmp = runtime->private_data;
 455
 456         snd_pcm_lib_free_pages(substream);
 457         if (pcmp->pvoices[0]) {
 458                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
 459                 pcmp->pvoices[0] = NULL;
 460         }
 461         if (pcmp->pvoices[1]) {
 462                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
 463                 pcmp->pvoices[1] = NULL;
 464         }
 465         if (pcmp->memory > 0) {
 466                 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
 467                 pcmp->memory = 0;
 468         }
 469         return 0;
 470 }
 471
 472 static int snd_gf1_pcm_playback_prepare(snd_pcm_substream_t * substream)
 473 {
 474         snd_pcm_runtime_t *runtime = substream->runtime;
 475         gus_pcm_private_t *pcmp = runtime->private_data;
 476
 477         pcmp->bpos = 0;
 478         pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
 479         pcmp->block_size = snd_pcm_lib_period_bytes(substream);
 480         pcmp->blocks = pcmp->dma_size / pcmp->block_size;
 481         return 0;
 482 }
 483
 484 static int snd_gf1_pcm_playback_trigger(snd_pcm_substream_t * substream,
 485                                         int cmd)
 486 {
 487         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 488         snd_pcm_runtime_t *runtime = substream->runtime;
 489         gus_pcm_private_t *pcmp = runtime->private_data;
 490         int voice;
 491
 492         if (cmd == SNDRV_PCM_TRIGGER_START) {
 493                 snd_gf1_pcm_trigger_up(substream);
 494         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 495                 spin_lock(&pcmp->lock);
 496                 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
 497                 spin_unlock(&pcmp->lock);
 498                 voice = pcmp->pvoices[0]->number;
 499                 snd_gf1_stop_voices(gus, voice, voice);
 500                 if (pcmp->pvoices[1]) {
 501                         voice = pcmp->pvoices[1]->number;
 502                         snd_gf1_stop_voices(gus, voice, voice);
 503                 }
 504         } else {
 505                 return -EINVAL;
 506         }
 507         return 0;
 508 }
 509
 510 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(snd_pcm_substream_t * substream)
 511 {
 512         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 513         snd_pcm_runtime_t *runtime = substream->runtime;
 514         gus_pcm_private_t *pcmp = runtime->private_data;
 515         unsigned int pos;
 516         unsigned char voice_ctrl;
 517
 518         pos = 0;
 519         spin_lock(&gus->reg_lock);
 520         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
 521                 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
 522                 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
 523                 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
 524                 if (substream->runtime->channels > 1)
 525                         pos <<= 1;
 526                 pos = bytes_to_frames(runtime, pos);
 527         }
 528         spin_unlock(&gus->reg_lock);
 529         return pos;
 530 }
 531
 532 static ratnum_t clock = {
 533         .num = 9878400/16,
 534         .den_min = 2,
 535         .den_max = 257,
 536         .den_step = 1,
 537 };
 538
 539 static snd_pcm_hw_constraint_ratnums_t hw_constraints_clocks  = {
 540         .nrats = 1,
 541         .rats = &clock,
 542 };
 543
 544 static int snd_gf1_pcm_capture_hw_params(snd_pcm_substream_t * substream,
 545                                          snd_pcm_hw_params_t * hw_params)
 546 {
 547         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 548
 549         gus->c_dma_size = params_buffer_bytes(hw_params);
 550         gus->c_period_size = params_period_bytes(hw_params);
 551         gus->c_pos = 0;
 552         gus->gf1.pcm_rcntrl_reg = 0x21;         /* IRQ at end, enable & start */
 553         if (params_channels(hw_params) > 1)
 554                 gus->gf1.pcm_rcntrl_reg |= 2;
 555         if (gus->gf1.dma2 > 3)
 556                 gus->gf1.pcm_rcntrl_reg |= 4;
 557         if (snd_pcm_format_unsigned(params_format(hw_params)))
 558                 gus->gf1.pcm_rcntrl_reg |= 0x80;
 559         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 560 }
 561
 562 static int snd_gf1_pcm_capture_hw_free(snd_pcm_substream_t * substream)
 563 {
 564         return snd_pcm_lib_free_pages(substream);
 565 }
 566
 567 static int snd_gf1_pcm_capture_prepare(snd_pcm_substream_t * substream)
 568 {
 569         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 570         snd_pcm_runtime_t *runtime = substream->runtime;
 571
 572         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
 573         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
 574         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
 575         snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
 576         return 0;
 577 }
 578
 579 static int snd_gf1_pcm_capture_trigger(snd_pcm_substream_t * substream,
 580                                        int cmd)
 581 {
 582         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 583         int val;
 584
 585         if (cmd == SNDRV_PCM_TRIGGER_START) {
 586                 val = gus->gf1.pcm_rcntrl_reg;
 587         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 588                 val = 0;
 589         } else {
 590                 return -EINVAL;
 591         }
 592
 593         spin_lock(&gus->reg_lock);
 594         snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
 595         snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
 596         spin_unlock(&gus->reg_lock);
 597         return 0;
 598 }
 599
 600 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(snd_pcm_substream_t * substream)
 601 {
 602         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 603         int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
 604         pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
 605         return pos;
 606 }
 607
 608 static void snd_gf1_pcm_interrupt_dma_read(snd_gus_card_t * gus)
 609 {
 610         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
 611         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
 612         if (gus->pcm_cap_substream != NULL) {
 613                 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream);
 614                 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
 615                 gus->c_pos += gus->c_period_size;
 616                 snd_pcm_period_elapsed(gus->pcm_cap_substream);
 617         }
 618 }
 619
 620 static snd_pcm_hardware_t snd_gf1_pcm_playback =
 621 {
 622         .info =                 SNDRV_PCM_INFO_NONINTERLEAVED,
 623         .formats                = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 624                                  SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
 625         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 626         .rate_min =             5510,
 627         .rate_max =             48000,
 628         .channels_min =         1,
 629         .channels_max =         2,
 630         .buffer_bytes_max =     (128*1024),
 631         .period_bytes_min =     64,
 632         .period_bytes_max =     (128*1024),
 633         .periods_min =          1,
 634         .periods_max =          1024,
 635         .fifo_size =            0,
 636 };
 637
 638 static snd_pcm_hardware_t snd_gf1_pcm_capture =
 639 {
 640         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 641                                  SNDRV_PCM_INFO_MMAP_VALID),
 642         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
 643         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
 644         .rate_min =             5510,
 645         .rate_max =             44100,
 646         .channels_min =         1,
 647         .channels_max =         2,
 648         .buffer_bytes_max =     (128*1024),
 649         .period_bytes_min =     64,
 650         .period_bytes_max =     (128*1024),
 651         .periods_min =          1,
 652         .periods_max =          1024,
 653         .fifo_size =            0,
 654 };
 655
 656 static void snd_gf1_pcm_playback_free(snd_pcm_runtime_t *runtime)
 657 {
 658         kfree(runtime->private_data);
 659 }
 660
 661 static int snd_gf1_pcm_playback_open(snd_pcm_substream_t *substream)
 662 {
 663         gus_pcm_private_t *pcmp;
 664         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 665         snd_pcm_runtime_t *runtime = substream->runtime;
 666         int err;
 667
 668         pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
 669         if (pcmp == NULL)
 670                 return -ENOMEM;
 671         pcmp->gus = gus;
 672         spin_lock_init(&pcmp->lock);
 673         init_waitqueue_head(&pcmp->sleep);
 674         atomic_set(&pcmp->dma_count, 0);
 675
 676         runtime->private_data = pcmp;
 677         runtime->private_free = snd_gf1_pcm_playback_free;
 678
 679 #if 0
 680         printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
 681 #endif
 682         if ((err = snd_gf1_dma_init(gus)) < 0)
 683                 return err;
 684         pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
 685         pcmp->substream = substream;
 686         runtime->hw = snd_gf1_pcm_playback;
 687         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
 688         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
 689         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
 690         return 0;
 691 }
 692
 693 static int snd_gf1_pcm_playback_close(snd_pcm_substream_t * substream)
 694 {
 695         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 696         snd_pcm_runtime_t *runtime = substream->runtime;
 697         gus_pcm_private_t *pcmp = runtime->private_data;
 698
 699         if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
 700                 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n");
 701
 702         snd_gf1_dma_done(gus);
 703         return 0;
 704 }
 705
 706 static int snd_gf1_pcm_capture_open(snd_pcm_substream_t * substream)
 707 {
 708         snd_pcm_runtime_t *runtime = substream->runtime;
 709         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 710
 711         gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
 712         gus->pcm_cap_substream = substream;
 713         substream->runtime->hw = snd_gf1_pcm_capture;
 714         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
 715         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
 716         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 717                                       &hw_constraints_clocks);
 718         return 0;
 719 }
 720
 721 static int snd_gf1_pcm_capture_close(snd_pcm_substream_t * substream)
 722 {
 723         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 724
 725         gus->pcm_cap_substream = NULL;
 726         snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
 727         return 0;
 728 }
 729
 730 static void snd_gf1_pcm_free(snd_pcm_t *pcm)
 731 {
 732         snd_gus_card_t *gus = pcm->private_data;
 733         gus->pcm = NULL;
 734         snd_pcm_lib_preallocate_free_for_all(pcm);
 735 }
 736
 737 static int snd_gf1_pcm_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 738 {
 739         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 740         uinfo->count = 2;
 741         uinfo->value.integer.min = 0;
 742         uinfo->value.integer.max = 127;
 743         return 0;
 744 }
 745
 746 static int snd_gf1_pcm_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 747 {
 748         snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
 749         unsigned long flags;
 750
 751         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
 752         ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
 753         ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
 754         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
 755         return 0;
 756 }
 757
 758 static int snd_gf1_pcm_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 759 {
 760         snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
 761         unsigned long flags;
 762         int change;
 763         unsigned int idx;
 764         unsigned short val1, val2, vol;
 765         gus_pcm_private_t *pcmp;
 766         snd_gus_voice_t *pvoice;
 767
 768         val1 = ucontrol->value.integer.value[0] & 127;
 769         val2 = ucontrol->value.integer.value[1] & 127;
 770         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
 771         change = val1 != gus->gf1.pcm_volume_level_left1 ||
 772                  val2 != gus->gf1.pcm_volume_level_right1;
 773         gus->gf1.pcm_volume_level_left1 = val1;
 774         gus->gf1.pcm_volume_level_right1 = val2;
 775         gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
 776         gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
 777         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
 778         /* are we active? */
 779         spin_lock_irqsave(&gus->voice_alloc, flags);
 780         for (idx = 0; idx < 32; idx++) {
 781                 pvoice = &gus->gf1.voices[idx];
 782                 if (!pvoice->pcm)
 783                         continue;
 784                 pcmp = pvoice->private_data;
 785                 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
 786                         continue;
 787                 /* load real volume - better precision */
 788                 spin_lock_irqsave(&gus->reg_lock, flags);
 789                 snd_gf1_select_voice(gus, pvoice->number);
 790                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 791                 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 792                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
 793                 pcmp->final_volume = 1;
 794                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 795         }
 796         spin_unlock_irqrestore(&gus->voice_alloc, flags);
 797         return change;
 798 }
 799
 800 static snd_kcontrol_new_t snd_gf1_pcm_volume_control =
 801 {
 802         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 803         .name = "PCM Playback Volume",
 804         .info = snd_gf1_pcm_volume_info,
 805         .get = snd_gf1_pcm_volume_get,
 806         .put = snd_gf1_pcm_volume_put
 807 };
 808
 809 static snd_kcontrol_new_t snd_gf1_pcm_volume_control1 =
 810 {
 811         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 812         .name = "GPCM Playback Volume",
 813         .info = snd_gf1_pcm_volume_info,
 814         .get = snd_gf1_pcm_volume_get,
 815         .put = snd_gf1_pcm_volume_put
 816 };
 817
 818 static snd_pcm_ops_t snd_gf1_pcm_playback_ops = {
 819         .open =         snd_gf1_pcm_playback_open,
 820         .close =        snd_gf1_pcm_playback_close,
 821         .ioctl =        snd_pcm_lib_ioctl,
 822         .hw_params =    snd_gf1_pcm_playback_hw_params,
 823         .hw_free =      snd_gf1_pcm_playback_hw_free,
 824         .prepare =      snd_gf1_pcm_playback_prepare,
 825         .trigger =      snd_gf1_pcm_playback_trigger,
 826         .pointer =      snd_gf1_pcm_playback_pointer,
 827         .copy =         snd_gf1_pcm_playback_copy,
 828         .silence =      snd_gf1_pcm_playback_silence,
 829 };
 830
 831 static snd_pcm_ops_t snd_gf1_pcm_capture_ops = {
 832         .open =         snd_gf1_pcm_capture_open,
 833         .close =        snd_gf1_pcm_capture_close,
 834         .ioctl =        snd_pcm_lib_ioctl,
 835         .hw_params =    snd_gf1_pcm_capture_hw_params,
 836         .hw_free =      snd_gf1_pcm_capture_hw_free,
 837         .prepare =      snd_gf1_pcm_capture_prepare,
 838         .trigger =      snd_gf1_pcm_capture_trigger,
 839         .pointer =      snd_gf1_pcm_capture_pointer,
 840 };
 841
 842 int snd_gf1_pcm_new(snd_gus_card_t * gus, int pcm_dev, int control_index, snd_pcm_t ** rpcm)
 843 {
 844         snd_card_t *card;
 845         snd_kcontrol_t *kctl;
 846         snd_pcm_t *pcm;
 847         snd_pcm_substream_t *substream;
 848         int capture, err;
 849
 850         if (rpcm)
 851                 *rpcm = NULL;
 852         card = gus->card;
 853         capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
 854         err = snd_pcm_new(card,
 855                           gus->interwave ? "AMD InterWave" : "GF1",
 856                           pcm_dev,
 857                           gus->gf1.pcm_channels / 2,
 858                           capture,
 859                           &pcm);
 860         if (err < 0)
 861                 return err;
 862         pcm->private_data = gus;
 863         pcm->private_free = snd_gf1_pcm_free;
 864         /* playback setup */
 865         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
 866
 867         for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
 868                 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
 869                                               snd_dma_isa_data(),
 870                                               64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
 871
 872         pcm->info_flags = 0;
 873         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
 874         if (capture) {
 875                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
 876                 if (gus->gf1.dma2 == gus->gf1.dma1)
 877                         pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
 878                 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
 879                                               SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(),
 880                                               64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
 881         }
 882         strcpy(pcm->name, pcm->id);
 883         if (gus->interwave) {
 884                 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
 885         }
 886         strcat(pcm->name, " (synth)");
 887         gus->pcm = pcm;
 888
 889         if (gus->codec_flag)
 890                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
 891         else
 892                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
 893         if ((err = snd_ctl_add(card, kctl)) < 0)
 894                 return err;
 895         kctl->id.index = control_index;
 896
 897         if (rpcm)
 898                 *rpcm = pcm;
 899         return 0;
 900 }
 901