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 #define chip_t snd_gus_card_t
  38
  39 /* maximum rate */
  40
  41 #define SNDRV_GF1_PCM_RATE              48000
  42
  43 #define SNDRV_GF1_PCM_PFLG_NONE         0
  44 #define SNDRV_GF1_PCM_PFLG_ACTIVE       (1<<0)
  45 #define SNDRV_GF1_PCM_PFLG_NEUTRAL      (2<<0)
  46
  47 typedef struct {
  48         snd_gus_card_t * gus;
  49         snd_pcm_substream_t * substream;
  50         spinlock_t lock;
  51         unsigned int voices;
  52         snd_gus_voice_t *pvoices[2];
  53         unsigned int memory;
  54         unsigned short flags;
  55         unsigned char voice_ctrl, ramp_ctrl;
  56         unsigned int bpos;
  57         unsigned int blocks;
  58         unsigned int block_size;
  59         unsigned int dma_size;
  60         wait_queue_head_t sleep;
  61         atomic_t dma_count;
  62         int final_volume;
  63 } gus_pcm_private_t;
  64
  65 static int snd_gf1_pcm_use_dma = 1;
  66
  67 static void snd_gf1_pcm_block_change_ack(snd_gus_card_t * gus, void *private_data)
  68 {
  69         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, private_data, return);
  70
  71         if (pcmp) {
  72                 atomic_dec(&pcmp->dma_count);
  73                 wake_up(&pcmp->sleep);
  74         }
  75 }
  76
  77 static int snd_gf1_pcm_block_change(snd_pcm_substream_t * substream,
  78                                     unsigned int offset,
  79                                     unsigned int addr,
  80                                     unsigned int count)
  81 {
  82         snd_gf1_dma_block_t block;
  83         snd_pcm_runtime_t *runtime = substream->runtime;
  84         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, runtime->private_data, return -ENXIO);
  85
  86         count += offset & 31;
  87         offset &= ~31;
  88         // snd_printk("block change - offset = 0x%x, count = 0x%x\n", offset, count);
  89         memset(&block, 0, sizeof(block));
  90         block.cmd = SNDRV_GF1_DMA_IRQ;
  91         if (snd_pcm_format_unsigned(runtime->format))
  92                 block.cmd |= SNDRV_GF1_DMA_UNSIGNED;
  93         if (snd_pcm_format_width(runtime->format) == 16)
  94                 block.cmd |= SNDRV_GF1_DMA_16BIT;
  95         block.addr = addr & ~31;
  96         block.buffer = runtime->dma_area + offset;
  97         block.buf_addr = runtime->dma_addr + offset;
  98         block.count = count;
  99         block.private_data = pcmp;
 100         block.ack = snd_gf1_pcm_block_change_ack;
 101         if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0))
 102                 atomic_inc(&pcmp->dma_count);
 103         return 0;
 104 }
 105
 106 static void snd_gf1_pcm_trigger_up(snd_pcm_substream_t * substream)
 107 {
 108         snd_pcm_runtime_t *runtime = substream->runtime;
 109         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, runtime->private_data, return);
 110         snd_gus_card_t * gus = pcmp->gus;
 111         unsigned long flags;
 112         unsigned char voice_ctrl, ramp_ctrl;
 113         unsigned short rate;
 114         unsigned int curr, begin, end;
 115         unsigned short vol;
 116         unsigned char pan;
 117         unsigned int voice;
 118
 119         if (substream == NULL)
 120                 return;
 121         spin_lock_irqsave(&pcmp->lock, flags);
 122         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
 123                 spin_unlock_irqrestore(&pcmp->lock, flags);
 124                 return;
 125         }
 126         pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE;
 127         pcmp->final_volume = 0;
 128         spin_unlock_irqrestore(&pcmp->lock, flags);
 129         rate = snd_gf1_translate_freq(gus, runtime->rate << 4);
 130         /* enable WAVE IRQ */
 131         voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20;
 132         /* enable RAMP IRQ + rollover */
 133         ramp_ctrl = 0x24;
 134         if (pcmp->blocks == 1) {
 135                 voice_ctrl |= 0x08;     /* loop enable */
 136                 ramp_ctrl &= ~0x04;     /* disable rollover */
 137         }
 138         for (voice = 0; voice < pcmp->voices; voice++) {
 139                 begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels);
 140                 curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels;
 141                 end = curr + (pcmp->block_size / runtime->channels);
 142                 end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1;
 143                 // 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);
 144                 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
 145                 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 146                 spin_lock_irqsave(&gus->reg_lock, flags);
 147                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 148                 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
 149                 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
 150                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
 151                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
 152                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
 153                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
 154                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
 155                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
 156                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
 157                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 158                 if (!gus->gf1.enh_mode) {
 159                         snd_gf1_delay(gus);
 160                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 161                 }
 162                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 163         }
 164         spin_lock_irqsave(&gus->reg_lock, flags);
 165         for (voice = 0; voice < pcmp->voices; voice++) {
 166                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 167                 if (gus->gf1.enh_mode)
 168                         snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00);   /* deactivate voice */
 169                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 170                 voice_ctrl &= ~0x20;
 171         }
 172         voice_ctrl |= 0x20;
 173         if (!gus->gf1.enh_mode) {
 174                 snd_gf1_delay(gus);
 175                 for (voice = 0; voice < pcmp->voices; voice++) {
 176                         snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 177                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 178                         voice_ctrl &= ~0x20;    /* disable IRQ for next voice */
 179                 }
 180         }
 181         spin_unlock_irqrestore(&gus->reg_lock, flags);
 182 }
 183
 184 static void snd_gf1_pcm_interrupt_wave(snd_gus_card_t * gus, snd_gus_voice_t *pvoice)
 185 {
 186         gus_pcm_private_t * pcmp;
 187         snd_pcm_runtime_t * runtime;
 188         unsigned char voice_ctrl, ramp_ctrl;
 189         unsigned int idx;
 190         unsigned int end, step;
 191
 192         if (!pvoice->private_data) {
 193                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
 194                 snd_gf1_smart_stop_voice(gus, pvoice->number);
 195                 return;
 196         }
 197         pcmp = snd_magic_cast(gus_pcm_private_t, pvoice->private_data, return);
 198         if (pcmp == NULL) {
 199                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
 200                 snd_gf1_smart_stop_voice(gus, pvoice->number);
 201                 return;
 202         }
 203         gus = pcmp->gus;
 204         runtime = pcmp->substream->runtime;
 205
 206         spin_lock(&gus->reg_lock);
 207         snd_gf1_select_voice(gus, pvoice->number);
 208         voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
 209         ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
 210 #if 0
 211         snd_gf1_select_voice(gus, pvoice->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, pcmp->pvoices[1]->number);
 214         printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
 215         snd_gf1_select_voice(gus, pvoice->number);
 216 #endif
 217         pcmp->bpos++;
 218         pcmp->bpos %= pcmp->blocks;
 219         if (pcmp->bpos + 1 >= pcmp->blocks) {   /* last block? */
 220                 voice_ctrl |= 0x08;     /* enable loop */
 221         } else {
 222                 ramp_ctrl |= 0x04;      /* enable rollover */
 223         }
 224         end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
 225         end -= voice_ctrl & 4 ? 2 : 1;
 226         step = pcmp->dma_size / runtime->channels;
 227         voice_ctrl |= 0x20;
 228         if (!pcmp->final_volume) {
 229                 ramp_ctrl |= 0x20;
 230                 ramp_ctrl &= ~0x03;
 231         }
 232         for (idx = 0; idx < pcmp->voices; idx++, end += step) {
 233                 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
 234                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
 235                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 236                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 237                 voice_ctrl &= ~0x20;
 238         }
 239         if (!gus->gf1.enh_mode) {
 240                 snd_gf1_delay(gus);
 241                 voice_ctrl |= 0x20;
 242                 for (idx = 0; idx < pcmp->voices; idx++) {
 243                         snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
 244                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 245                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 246                         voice_ctrl &= ~0x20;
 247                 }
 248         }
 249         spin_unlock(&gus->reg_lock);
 250
 251         snd_pcm_period_elapsed(pcmp->substream);
 252 #if 0
 253         if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
 254             *runtime->state == SNDRV_PCM_STATE_RUNNING) {
 255                 end = pcmp->bpos * pcmp->block_size;
 256                 if (runtime->channels > 1) {
 257                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
 258                         snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
 259                 } else {
 260                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
 261                 }
 262         }
 263 #endif
 264 }
 265
 266 static void snd_gf1_pcm_interrupt_volume(snd_gus_card_t * gus, snd_gus_voice_t * pvoice)
 267 {
 268         unsigned short vol;
 269         int cvoice;
 270         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, pvoice->private_data, return);
 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(snd_gus_card_t * gus)
 295 {
 296 }
 297
 298 static int snd_gf1_pcm_poke_block(snd_gus_card_t *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(1);
 339                         if (signal_pending(current))
 340                                 return -EAGAIN;
 341                 }
 342         }
 343         return 0;
 344 }
 345
 346 static int snd_gf1_pcm_playback_copy(snd_pcm_substream_t *substream,
 347                                      int voice,
 348                                      snd_pcm_uframes_t pos,
 349                                      void __user *src,
 350                                      snd_pcm_uframes_t count)
 351 {
 352         snd_pcm_runtime_t *runtime = substream->runtime;
 353         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, runtime->private_data, return -ENXIO);
 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                 snd_gus_card_t *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(snd_pcm_substream_t *substream,
 377                                         int voice,
 378                                         snd_pcm_uframes_t pos,
 379                                         snd_pcm_uframes_t count)
 380 {
 381         snd_pcm_runtime_t *runtime = substream->runtime;
 382         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, runtime->private_data, return -ENXIO);
 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                 snd_gus_card_t *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(snd_pcm_substream_t * substream,
 405                                           snd_pcm_hw_params_t * hw_params)
 406 {
 407         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 408         snd_pcm_runtime_t *runtime = substream->runtime;
 409         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, runtime->private_data, return -ENXIO);
 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                 snd_gf1_mem_block_t *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(snd_pcm_substream_t * substream)
 454 {
 455         snd_pcm_runtime_t *runtime = substream->runtime;
 456         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, runtime->private_data, return -ENXIO);
 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(snd_pcm_substream_t * substream)
 475 {
 476         snd_pcm_runtime_t *runtime = substream->runtime;
 477         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, runtime->private_data, return -ENXIO);
 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(snd_pcm_substream_t * substream,
 487                                         int cmd)
 488 {
 489         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 490         snd_pcm_runtime_t *runtime = substream->runtime;
 491         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, runtime->private_data, return -ENXIO);
 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(snd_pcm_substream_t * substream)
 513 {
 514         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 515         snd_pcm_runtime_t *runtime = substream->runtime;
 516         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, runtime->private_data, return -ENXIO);
 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 ratnum_t clock = {
 535         .num = 9878400/16,
 536         .den_min = 2,
 537         .den_max = 257,
 538         .den_step = 1,
 539 };
 540
 541 static snd_pcm_hw_constraint_ratnums_t hw_constraints_clocks  = {
 542         .nrats = 1,
 543         .rats = &clock,
 544 };
 545
 546 static int snd_gf1_pcm_capture_hw_params(snd_pcm_substream_t * substream,
 547                                          snd_pcm_hw_params_t * hw_params)
 548 {
 549         snd_gus_card_t *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(snd_pcm_substream_t * substream)
 565 {
 566         return snd_pcm_lib_free_pages(substream);
 567 }
 568
 569 static int snd_gf1_pcm_capture_prepare(snd_pcm_substream_t * substream)
 570 {
 571         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 572         snd_pcm_runtime_t *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(snd_pcm_substream_t * substream,
 582                                        int cmd)
 583 {
 584         snd_gus_card_t *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(snd_pcm_substream_t * substream)
 603 {
 604         snd_gus_card_t *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(snd_gus_card_t * 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 snd_pcm_hardware_t 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 snd_pcm_hardware_t 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(snd_pcm_runtime_t *runtime)
 659 {
 660         gus_pcm_private_t * pcmp = snd_magic_cast(gus_pcm_private_t, runtime->private_data, return);
 661         snd_magic_kfree(pcmp);
 662 }
 663
 664 static int snd_gf1_pcm_playback_open(snd_pcm_substream_t *substream)
 665 {
 666         gus_pcm_private_t *pcmp;
 667         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 668         snd_pcm_runtime_t *runtime = substream->runtime;
 669         int err;
 670
 671         pcmp = snd_magic_kcalloc(gus_pcm_private_t, 0, GFP_KERNEL);
 672         if (pcmp == NULL)
 673                 return -ENOMEM;
 674         pcmp->gus = gus;
 675         spin_lock_init(&pcmp->lock);
 676         init_waitqueue_head(&pcmp->sleep);
 677         atomic_set(&pcmp->dma_count, 0);
 678
 679         runtime->private_data = pcmp;
 680         runtime->private_free = snd_gf1_pcm_playback_free;
 681
 682 #if 0
 683         printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
 684 #endif
 685         if ((err = snd_gf1_dma_init(gus)) < 0)
 686                 return err;
 687         pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
 688         pcmp->substream = substream;
 689         runtime->hw = snd_gf1_pcm_playback;
 690         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
 691         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
 692         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
 693         return 0;
 694 }
 695
 696 static int snd_gf1_pcm_playback_close(snd_pcm_substream_t * substream)
 697 {
 698         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 699         snd_pcm_runtime_t *runtime = substream->runtime;
 700         gus_pcm_private_t *pcmp = snd_magic_cast(gus_pcm_private_t, runtime->private_data, return -ENXIO);
 701         unsigned long jiffies_old;
 702
 703         jiffies_old = jiffies;
 704         while (atomic_read(&pcmp->dma_count) > 0) {
 705                 interruptible_sleep_on_timeout(&pcmp->sleep, 1);
 706                 if ((signed long)(jiffies - jiffies_old) > 2*HZ) {
 707                         snd_printk("gf1 pcm - serious DMA problem\n");
 708                         break;
 709                 }
 710         }
 711         snd_gf1_dma_done(gus);
 712         return 0;
 713 }
 714
 715 static int snd_gf1_pcm_capture_open(snd_pcm_substream_t * substream)
 716 {
 717         snd_pcm_runtime_t *runtime = substream->runtime;
 718         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 719
 720         gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
 721         gus->pcm_cap_substream = substream;
 722         substream->runtime->hw = snd_gf1_pcm_capture;
 723         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
 724         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
 725         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 726                                       &hw_constraints_clocks);
 727         return 0;
 728 }
 729
 730 static int snd_gf1_pcm_capture_close(snd_pcm_substream_t * substream)
 731 {
 732         snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
 733
 734         gus->pcm_cap_substream = NULL;
 735         snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
 736         return 0;
 737 }
 738
 739 static void snd_gf1_pcm_free(snd_pcm_t *pcm)
 740 {
 741         snd_gus_card_t *gus = snd_magic_cast(snd_gus_card_t, pcm->private_data, return);
 742         gus->pcm = NULL;
 743         snd_pcm_lib_preallocate_free_for_all(pcm);
 744 }
 745
 746 static int snd_gf1_pcm_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 747 {
 748         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 749         uinfo->count = 2;
 750         uinfo->value.integer.min = 0;
 751         uinfo->value.integer.max = 127;
 752         return 0;
 753 }
 754
 755 static int snd_gf1_pcm_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 756 {
 757         snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
 758         unsigned long flags;
 759
 760         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
 761         ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
 762         ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
 763         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
 764         return 0;
 765 }
 766
 767 static int snd_gf1_pcm_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 768 {
 769         snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
 770         unsigned long flags;
 771         int change;
 772         unsigned int idx;
 773         unsigned short val1, val2, vol;
 774         gus_pcm_private_t *pcmp;
 775         snd_gus_voice_t *pvoice;
 776
 777         val1 = ucontrol->value.integer.value[0] & 127;
 778         val2 = ucontrol->value.integer.value[1] & 127;
 779         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
 780         change = val1 != gus->gf1.pcm_volume_level_left1 ||
 781                  val2 != gus->gf1.pcm_volume_level_right1;
 782         gus->gf1.pcm_volume_level_left1 = val1;
 783         gus->gf1.pcm_volume_level_right1 = val2;
 784         gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
 785         gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
 786         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
 787         /* are we active? */
 788         spin_lock_irqsave(&gus->voice_alloc, flags);
 789         for (idx = 0; idx < 32; idx++) {
 790                 pvoice = &gus->gf1.voices[idx];
 791                 if (!pvoice->pcm)
 792                         continue;
 793                 pcmp = snd_magic_cast(gus_pcm_private_t, pvoice->private_data, return -ENXIO);
 794                 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
 795                         continue;
 796                 /* load real volume - better precision */
 797                 spin_lock_irqsave(&gus->reg_lock, flags);
 798                 snd_gf1_select_voice(gus, pvoice->number);
 799                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 800                 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 801                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
 802                 pcmp->final_volume = 1;
 803                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 804         }
 805         spin_unlock_irqrestore(&gus->voice_alloc, flags);
 806         return change;
 807 }
 808
 809 static snd_kcontrol_new_t snd_gf1_pcm_volume_control =
 810 {
 811         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 812         .name = "PCM 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_kcontrol_new_t snd_gf1_pcm_volume_control1 =
 819 {
 820         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 821         .name = "GPCM Playback Volume",
 822         .info = snd_gf1_pcm_volume_info,
 823         .get = snd_gf1_pcm_volume_get,
 824         .put = snd_gf1_pcm_volume_put
 825 };
 826
 827 static snd_pcm_ops_t snd_gf1_pcm_playback_ops = {
 828         .open =         snd_gf1_pcm_playback_open,
 829         .close =        snd_gf1_pcm_playback_close,
 830         .ioctl =        snd_pcm_lib_ioctl,
 831         .hw_params =    snd_gf1_pcm_playback_hw_params,
 832         .hw_free =      snd_gf1_pcm_playback_hw_free,
 833         .prepare =      snd_gf1_pcm_playback_prepare,
 834         .trigger =      snd_gf1_pcm_playback_trigger,
 835         .pointer =      snd_gf1_pcm_playback_pointer,
 836         .copy =         snd_gf1_pcm_playback_copy,
 837         .silence =      snd_gf1_pcm_playback_silence,
 838 };
 839
 840 static snd_pcm_ops_t snd_gf1_pcm_capture_ops = {
 841         .open =         snd_gf1_pcm_capture_open,
 842         .close =        snd_gf1_pcm_capture_close,
 843         .ioctl =        snd_pcm_lib_ioctl,
 844         .hw_params =    snd_gf1_pcm_capture_hw_params,
 845         .hw_free =      snd_gf1_pcm_capture_hw_free,
 846         .prepare =      snd_gf1_pcm_capture_prepare,
 847         .trigger =      snd_gf1_pcm_capture_trigger,
 848         .pointer =      snd_gf1_pcm_capture_pointer,
 849 };
 850
 851 int snd_gf1_pcm_new(snd_gus_card_t * gus, int pcm_dev, int control_index, snd_pcm_t ** rpcm)
 852 {
 853         snd_card_t *card;
 854         snd_kcontrol_t *kctl;
 855         snd_pcm_t *pcm;
 856         snd_pcm_substream_t *substream;
 857         int capture, err;
 858
 859         if (rpcm)
 860                 *rpcm = NULL;
 861         card = gus->card;
 862         capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
 863         err = snd_pcm_new(card,
 864                           gus->interwave ? "AMD InterWave" : "GF1",
 865                           pcm_dev,
 866                           gus->gf1.pcm_channels / 2,
 867                           capture,
 868                           &pcm);
 869         if (err < 0)
 870                 return err;
 871         pcm->private_data = gus;
 872         pcm->private_free = snd_gf1_pcm_free;
 873         /* playback setup */
 874         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
 875
 876         for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
 877                 snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
 878                                               snd_dma_isa_data(),
 879                                               64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
 880
 881         pcm->info_flags = 0;
 882         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
 883         if (capture) {
 884                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
 885                 if (gus->gf1.dma2 == gus->gf1.dma1)
 886                         pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
 887                 snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
 888                                               SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(),
 889                                               64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
 890         }
 891         strcpy(pcm->name, pcm->id);
 892         if (gus->interwave) {
 893                 sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
 894         }
 895         strcat(pcm->name, " (synth)");
 896         gus->pcm = pcm;
 897
 898         if (gus->codec_flag)
 899                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
 900         else
 901                 kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
 902         if ((err = snd_ctl_add(card, kctl)) < 0)
 903                 return err;
 904         kctl->id.index = control_index;
 905
 906         if (rpcm)
 907                 *rpcm = pcm;
 908         return 0;
 909 }
 910