sound/isa/gus/gus_pcm.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@perex.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 <asm/dma.h>
  29 #include <linux/slab.h>
  30 #include <linux/sched/signal.h>
  31
  32 #include <sound/core.h>
  33 #include <sound/control.h>
  34 #include <sound/gus.h>
  35 #include <sound/pcm_params.h>
  36 #include "gus_tables.h"
  37
  38 /* maximum rate */
  39
  40 #define SNDRV_GF1_PCM_RATE              48000
  41
  42 #define SNDRV_GF1_PCM_PFLG_NONE         0
  43 #define SNDRV_GF1_PCM_PFLG_ACTIVE       (1<<0)
  44 #define SNDRV_GF1_PCM_PFLG_NEUTRAL      (2<<0)
  45
  46 struct gus_pcm_private {
  47         struct snd_gus_card * gus;
  48         struct snd_pcm_substream *substream;
  49         spinlock_t lock;
  50         unsigned int voices;
  51         struct snd_gus_voice *pvoices[2];
  52         unsigned int memory;
  53         unsigned short flags;
  54         unsigned char voice_ctrl, ramp_ctrl;
  55         unsigned int bpos;
  56         unsigned int blocks;
  57         unsigned int block_size;
  58         unsigned int dma_size;
  59         wait_queue_head_t sleep;
  60         atomic_t dma_count;
  61         int final_volume;
  62 };
  63
  64 static int snd_gf1_pcm_use_dma = 1;
  65
  66 static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data)
  67 {
  68         struct gus_pcm_private *pcmp = private_data;
  69
  70         if (pcmp) {
  71                 atomic_dec(&pcmp->dma_count);
  72                 wake_up(&pcmp->sleep);
  73         }
  74 }
  75
  76 static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream,
  77                                     unsigned int offset,
  78                                     unsigned int addr,
  79                                     unsigned int count)
  80 {
  81         struct snd_gf1_dma_block block;
  82         struct snd_pcm_runtime *runtime = substream->runtime;
  83         struct gus_pcm_private *pcmp = runtime->private_data;
  84
  85         count += offset & 31;
  86         offset &= ~31;
  87         /*
  88         snd_printk(KERN_DEBUG "block change - offset = 0x%x, count = 0x%x\n",
  89                    offset, count);
  90         */
  91         memset(&block, 0, sizeof(block));
  92         block.cmd = SNDRV_GF1_DMA_IRQ;
  93         if (snd_pcm_format_unsigned(runtime->format))
  94                 block.cmd |= SNDRV_GF1_DMA_UNSIGNED;
  95         if (snd_pcm_format_width(runtime->format) == 16)
  96                 block.cmd |= SNDRV_GF1_DMA_16BIT;
  97         block.addr = addr & ~31;
  98         block.buffer = runtime->dma_area + offset;
  99         block.buf_addr = runtime->dma_addr + offset;
 100         block.count = count;
 101         block.private_data = pcmp;
 102         block.ack = snd_gf1_pcm_block_change_ack;
 103         if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0))
 104                 atomic_inc(&pcmp->dma_count);
 105         return 0;
 106 }
 107
 108 static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
 109 {
 110         struct snd_pcm_runtime *runtime = substream->runtime;
 111         struct gus_pcm_private *pcmp = runtime->private_data;
 112         struct snd_gus_card * gus = pcmp->gus;
 113         unsigned long flags;
 114         unsigned char voice_ctrl, ramp_ctrl;
 115         unsigned short rate;
 116         unsigned int curr, begin, end;
 117         unsigned short vol;
 118         unsigned char pan;
 119         unsigned int voice;
 120
 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                 /*
 144                 snd_printk(KERN_DEBUG "init: curr=0x%x, begin=0x%x, end=0x%x, "
 145                            "ctrl=0x%x, ramp=0x%x, rate=0x%x\n",
 146                            curr, begin, end, voice_ctrl, ramp_ctrl, rate);
 147                 */
 148                 pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
 149                 vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 150                 spin_lock_irqsave(&gus->reg_lock, flags);
 151                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 152                 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
 153                 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
 154                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
 155                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
 156                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
 157                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
 158                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
 159                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
 160                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
 161                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 162                 if (!gus->gf1.enh_mode) {
 163                         snd_gf1_delay(gus);
 164                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 165                 }
 166                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 167         }
 168         spin_lock_irqsave(&gus->reg_lock, flags);
 169         for (voice = 0; voice < pcmp->voices; voice++) {
 170                 snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 171                 if (gus->gf1.enh_mode)
 172                         snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00);   /* deactivate voice */
 173                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 174                 voice_ctrl &= ~0x20;
 175         }
 176         voice_ctrl |= 0x20;
 177         if (!gus->gf1.enh_mode) {
 178                 snd_gf1_delay(gus);
 179                 for (voice = 0; voice < pcmp->voices; voice++) {
 180                         snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
 181                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 182                         voice_ctrl &= ~0x20;    /* disable IRQ for next voice */
 183                 }
 184         }
 185         spin_unlock_irqrestore(&gus->reg_lock, flags);
 186 }
 187
 188 static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,
 189                                        struct snd_gus_voice *pvoice)
 190 {
 191         struct gus_pcm_private * pcmp;
 192         struct snd_pcm_runtime *runtime;
 193         unsigned char voice_ctrl, ramp_ctrl;
 194         unsigned int idx;
 195         unsigned int end, step;
 196
 197         if (!pvoice->private_data) {
 198                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
 199                 snd_gf1_smart_stop_voice(gus, pvoice->number);
 200                 return;
 201         }
 202         pcmp = pvoice->private_data;
 203         if (pcmp == NULL) {
 204                 snd_printd("snd_gf1_pcm: unknown wave irq?\n");
 205                 snd_gf1_smart_stop_voice(gus, pvoice->number);
 206                 return;
 207         }
 208         gus = pcmp->gus;
 209         runtime = pcmp->substream->runtime;
 210
 211         spin_lock(&gus->reg_lock);
 212         snd_gf1_select_voice(gus, pvoice->number);
 213         voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
 214         ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
 215 #if 0
 216         snd_gf1_select_voice(gus, pvoice->number);
 217         printk(KERN_DEBUG "position = 0x%x\n",
 218                (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
 219         snd_gf1_select_voice(gus, pcmp->pvoices[1]->number);
 220         printk(KERN_DEBUG "position = 0x%x\n",
 221                (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
 222         snd_gf1_select_voice(gus, pvoice->number);
 223 #endif
 224         pcmp->bpos++;
 225         pcmp->bpos %= pcmp->blocks;
 226         if (pcmp->bpos + 1 >= pcmp->blocks) {   /* last block? */
 227                 voice_ctrl |= 0x08;     /* enable loop */
 228         } else {
 229                 ramp_ctrl |= 0x04;      /* enable rollover */
 230         }
 231         end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
 232         end -= voice_ctrl & 4 ? 2 : 1;
 233         step = pcmp->dma_size / runtime->channels;
 234         voice_ctrl |= 0x20;
 235         if (!pcmp->final_volume) {
 236                 ramp_ctrl |= 0x20;
 237                 ramp_ctrl &= ~0x03;
 238         }
 239         for (idx = 0; idx < pcmp->voices; idx++, end += step) {
 240                 snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
 241                 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
 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         if (!gus->gf1.enh_mode) {
 247                 snd_gf1_delay(gus);
 248                 voice_ctrl |= 0x20;
 249                 for (idx = 0; idx < pcmp->voices; idx++) {
 250                         snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
 251                         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
 252                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
 253                         voice_ctrl &= ~0x20;
 254                 }
 255         }
 256         spin_unlock(&gus->reg_lock);
 257
 258         snd_pcm_period_elapsed(pcmp->substream);
 259 #if 0
 260         if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
 261             *runtime->state == SNDRV_PCM_STATE_RUNNING) {
 262                 end = pcmp->bpos * pcmp->block_size;
 263                 if (runtime->channels > 1) {
 264                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
 265                         snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
 266                 } else {
 267                         snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
 268                 }
 269         }
 270 #endif
 271 }
 272
 273 static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,
 274                                          struct snd_gus_voice * pvoice)
 275 {
 276         unsigned short vol;
 277         int cvoice;
 278         struct gus_pcm_private *pcmp = pvoice->private_data;
 279
 280         /* stop ramp, but leave rollover bit untouched */
 281         spin_lock(&gus->reg_lock);
 282         snd_gf1_select_voice(gus, pvoice->number);
 283         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 284         spin_unlock(&gus->reg_lock);
 285         if (pcmp == NULL)
 286                 return;
 287         /* are we active? */
 288         if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
 289                 return;
 290         /* load real volume - better precision */
 291         cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1;
 292         if (pcmp->substream == NULL)
 293                 return;
 294         vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 295         spin_lock(&gus->reg_lock);
 296         snd_gf1_select_voice(gus, pvoice->number);
 297         snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
 298         pcmp->final_volume = 1;
 299         spin_unlock(&gus->reg_lock);
 300 }
 301
 302 static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus)
 303 {
 304 }
 305
 306 static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
 307                                   unsigned int pos, unsigned int count,
 308                                   int w16, int invert)
 309 {
 310         unsigned int len;
 311         unsigned long flags;
 312
 313         /*
 314         printk(KERN_DEBUG
 315                "poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n",
 316                (int)buf, pos, count, gus->gf1.port);
 317         */
 318         while (count > 0) {
 319                 len = count;
 320                 if (len > 512)          /* limit, to allow IRQ */
 321                         len = 512;
 322                 count -= len;
 323                 if (gus->interwave) {
 324                         spin_lock_irqsave(&gus->reg_lock, flags);
 325                         snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00));
 326                         snd_gf1_dram_addr(gus, pos);
 327                         if (w16) {
 328                                 outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL));
 329                                 outsw(GUSP(gus, GF1DATALOW), buf, len >> 1);
 330                         } else {
 331                                 outsb(GUSP(gus, DRAM), buf, len);
 332                         }
 333                         spin_unlock_irqrestore(&gus->reg_lock, flags);
 334                         buf += 512;
 335                         pos += 512;
 336                 } else {
 337                         invert = invert ? 0x80 : 0x00;
 338                         if (w16) {
 339                                 len >>= 1;
 340                                 while (len--) {
 341                                         snd_gf1_poke(gus, pos++, *buf++);
 342                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
 343                                 }
 344                         } else {
 345                                 while (len--)
 346                                         snd_gf1_poke(gus, pos++, *buf++ ^ invert);
 347                         }
 348                 }
 349                 if (count > 0 && !in_interrupt()) {
 350                         schedule_timeout_interruptible(1);
 351                         if (signal_pending(current))
 352                                 return -EAGAIN;
 353                 }
 354         }
 355         return 0;
 356 }
 357
 358 static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
 359                                      int voice,
 360                                      snd_pcm_uframes_t pos,
 361                                      void __user *src,
 362                                      snd_pcm_uframes_t count)
 363 {
 364         struct snd_pcm_runtime *runtime = substream->runtime;
 365         struct gus_pcm_private *pcmp = runtime->private_data;
 366         unsigned int bpos, len;
 367
 368         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
 369         len = samples_to_bytes(runtime, count);
 370         if (snd_BUG_ON(bpos > pcmp->dma_size))
 371                 return -EIO;
 372         if (snd_BUG_ON(bpos + len > pcmp->dma_size))
 373                 return -EIO;
 374         if (copy_from_user(runtime->dma_area + bpos, src, len))
 375                 return -EFAULT;
 376         if (snd_gf1_pcm_use_dma && len > 32) {
 377                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
 378         } else {
 379                 struct snd_gus_card *gus = pcmp->gus;
 380                 int err, w16, invert;
 381
 382                 w16 = (snd_pcm_format_width(runtime->format) == 16);
 383                 invert = snd_pcm_format_unsigned(runtime->format);
 384                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
 385                         return err;
 386         }
 387         return 0;
 388 }
 389
 390 static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
 391                                         int voice,
 392                                         snd_pcm_uframes_t pos,
 393                                         snd_pcm_uframes_t count)
 394 {
 395         struct snd_pcm_runtime *runtime = substream->runtime;
 396         struct gus_pcm_private *pcmp = runtime->private_data;
 397         unsigned int bpos, len;
 398
 399         bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
 400         len = samples_to_bytes(runtime, count);
 401         if (snd_BUG_ON(bpos > pcmp->dma_size))
 402                 return -EIO;
 403         if (snd_BUG_ON(bpos + len > pcmp->dma_size))
 404                 return -EIO;
 405         snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
 406         if (snd_gf1_pcm_use_dma && len > 32) {
 407                 return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
 408         } else {
 409                 struct snd_gus_card *gus = pcmp->gus;
 410                 int err, w16, invert;
 411
 412                 w16 = (snd_pcm_format_width(runtime->format) == 16);
 413                 invert = snd_pcm_format_unsigned(runtime->format);
 414                 if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
 415                         return err;
 416         }
 417         return 0;
 418 }
 419
 420 static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,
 421                                           struct snd_pcm_hw_params *hw_params)
 422 {
 423         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 424         struct snd_pcm_runtime *runtime = substream->runtime;
 425         struct gus_pcm_private *pcmp = runtime->private_data;
 426         int err;
 427
 428         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 429                 return err;
 430         if (err > 0) {  /* change */
 431                 struct snd_gf1_mem_block *block;
 432                 if (pcmp->memory > 0) {
 433                         snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
 434                         pcmp->memory = 0;
 435                 }
 436                 if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
 437                                                SNDRV_GF1_MEM_OWNER_DRIVER,
 438                                                "GF1 PCM",
 439                                                runtime->dma_bytes, 1, 32,
 440                                                NULL)) == NULL)
 441                         return -ENOMEM;
 442                 pcmp->memory = block->ptr;
 443         }
 444         pcmp->voices = params_channels(hw_params);
 445         if (pcmp->pvoices[0] == NULL) {
 446                 if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
 447                         return -ENOMEM;
 448                 pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
 449                 pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
 450                 pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
 451                 pcmp->pvoices[0]->private_data = pcmp;
 452         }
 453         if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
 454                 if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
 455                         return -ENOMEM;
 456                 pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
 457                 pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
 458                 pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
 459                 pcmp->pvoices[1]->private_data = pcmp;
 460         } else if (pcmp->voices == 1) {
 461                 if (pcmp->pvoices[1]) {
 462                         snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
 463                         pcmp->pvoices[1] = NULL;
 464                 }
 465         }
 466         return 0;
 467 }
 468
 469 static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream)
 470 {
 471         struct snd_pcm_runtime *runtime = substream->runtime;
 472         struct gus_pcm_private *pcmp = runtime->private_data;
 473
 474         snd_pcm_lib_free_pages(substream);
 475         if (pcmp->pvoices[0]) {
 476                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
 477                 pcmp->pvoices[0] = NULL;
 478         }
 479         if (pcmp->pvoices[1]) {
 480                 snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
 481                 pcmp->pvoices[1] = NULL;
 482         }
 483         if (pcmp->memory > 0) {
 484                 snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
 485                 pcmp->memory = 0;
 486         }
 487         return 0;
 488 }
 489
 490 static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream)
 491 {
 492         struct snd_pcm_runtime *runtime = substream->runtime;
 493         struct gus_pcm_private *pcmp = runtime->private_data;
 494
 495         pcmp->bpos = 0;
 496         pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
 497         pcmp->block_size = snd_pcm_lib_period_bytes(substream);
 498         pcmp->blocks = pcmp->dma_size / pcmp->block_size;
 499         return 0;
 500 }
 501
 502 static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream,
 503                                         int cmd)
 504 {
 505         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 506         struct snd_pcm_runtime *runtime = substream->runtime;
 507         struct gus_pcm_private *pcmp = runtime->private_data;
 508         int voice;
 509
 510         if (cmd == SNDRV_PCM_TRIGGER_START) {
 511                 snd_gf1_pcm_trigger_up(substream);
 512         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 513                 spin_lock(&pcmp->lock);
 514                 pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
 515                 spin_unlock(&pcmp->lock);
 516                 voice = pcmp->pvoices[0]->number;
 517                 snd_gf1_stop_voices(gus, voice, voice);
 518                 if (pcmp->pvoices[1]) {
 519                         voice = pcmp->pvoices[1]->number;
 520                         snd_gf1_stop_voices(gus, voice, voice);
 521                 }
 522         } else {
 523                 return -EINVAL;
 524         }
 525         return 0;
 526 }
 527
 528 static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream)
 529 {
 530         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 531         struct snd_pcm_runtime *runtime = substream->runtime;
 532         struct gus_pcm_private *pcmp = runtime->private_data;
 533         unsigned int pos;
 534         unsigned char voice_ctrl;
 535
 536         pos = 0;
 537         spin_lock(&gus->reg_lock);
 538         if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
 539                 snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
 540                 voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
 541                 pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
 542                 if (substream->runtime->channels > 1)
 543                         pos <<= 1;
 544                 pos = bytes_to_frames(runtime, pos);
 545         }
 546         spin_unlock(&gus->reg_lock);
 547         return pos;
 548 }
 549
 550 static struct snd_ratnum clock = {
 551         .num = 9878400/16,
 552         .den_min = 2,
 553         .den_max = 257,
 554         .den_step = 1,
 555 };
 556
 557 static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks  = {
 558         .nrats = 1,
 559         .rats = &clock,
 560 };
 561
 562 static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream,
 563                                          struct snd_pcm_hw_params *hw_params)
 564 {
 565         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 566
 567         gus->c_dma_size = params_buffer_bytes(hw_params);
 568         gus->c_period_size = params_period_bytes(hw_params);
 569         gus->c_pos = 0;
 570         gus->gf1.pcm_rcntrl_reg = 0x21;         /* IRQ at end, enable & start */
 571         if (params_channels(hw_params) > 1)
 572                 gus->gf1.pcm_rcntrl_reg |= 2;
 573         if (gus->gf1.dma2 > 3)
 574                 gus->gf1.pcm_rcntrl_reg |= 4;
 575         if (snd_pcm_format_unsigned(params_format(hw_params)))
 576                 gus->gf1.pcm_rcntrl_reg |= 0x80;
 577         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 578 }
 579
 580 static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream)
 581 {
 582         return snd_pcm_lib_free_pages(substream);
 583 }
 584
 585 static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream)
 586 {
 587         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 588         struct snd_pcm_runtime *runtime = substream->runtime;
 589
 590         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
 591         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
 592         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
 593         snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
 594         return 0;
 595 }
 596
 597 static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream,
 598                                        int cmd)
 599 {
 600         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 601         int val;
 602
 603         if (cmd == SNDRV_PCM_TRIGGER_START) {
 604                 val = gus->gf1.pcm_rcntrl_reg;
 605         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 606                 val = 0;
 607         } else {
 608                 return -EINVAL;
 609         }
 610
 611         spin_lock(&gus->reg_lock);
 612         snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
 613         snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
 614         spin_unlock(&gus->reg_lock);
 615         return 0;
 616 }
 617
 618 static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream)
 619 {
 620         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 621         int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
 622         pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
 623         return pos;
 624 }
 625
 626 static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)
 627 {
 628         snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
 629         snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);     /* Sampling Control Register */
 630         if (gus->pcm_cap_substream != NULL) {
 631                 snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream);
 632                 snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
 633                 gus->c_pos += gus->c_period_size;
 634                 snd_pcm_period_elapsed(gus->pcm_cap_substream);
 635         }
 636 }
 637
 638 static struct snd_pcm_hardware snd_gf1_pcm_playback =
 639 {
 640         .info =                 SNDRV_PCM_INFO_NONINTERLEAVED,
 641         .formats                = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 642                                  SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
 643         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 644         .rate_min =             5510,
 645         .rate_max =             48000,
 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 struct snd_pcm_hardware snd_gf1_pcm_capture =
 657 {
 658         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 659                                  SNDRV_PCM_INFO_MMAP_VALID),
 660         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
 661         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
 662         .rate_min =             5510,
 663         .rate_max =             44100,
 664         .channels_min =         1,
 665         .channels_max =         2,
 666         .buffer_bytes_max =     (128*1024),
 667         .period_bytes_min =     64,
 668         .period_bytes_max =     (128*1024),
 669         .periods_min =          1,
 670         .periods_max =          1024,
 671         .fifo_size =            0,
 672 };
 673
 674 static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime)
 675 {
 676         kfree(runtime->private_data);
 677 }
 678
 679 static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream)
 680 {
 681         struct gus_pcm_private *pcmp;
 682         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 683         struct snd_pcm_runtime *runtime = substream->runtime;
 684         int err;
 685
 686         pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
 687         if (pcmp == NULL)
 688                 return -ENOMEM;
 689         pcmp->gus = gus;
 690         spin_lock_init(&pcmp->lock);
 691         init_waitqueue_head(&pcmp->sleep);
 692         atomic_set(&pcmp->dma_count, 0);
 693
 694         runtime->private_data = pcmp;
 695         runtime->private_free = snd_gf1_pcm_playback_free;
 696
 697 #if 0
 698         printk(KERN_DEBUG "playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n",
 699                (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
 700 #endif
 701         if ((err = snd_gf1_dma_init(gus)) < 0)
 702                 return err;
 703         pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
 704         pcmp->substream = substream;
 705         runtime->hw = snd_gf1_pcm_playback;
 706         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
 707         snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
 708         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
 709         return 0;
 710 }
 711
 712 static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream)
 713 {
 714         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 715         struct snd_pcm_runtime *runtime = substream->runtime;
 716         struct gus_pcm_private *pcmp = runtime->private_data;
 717
 718         if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
 719                 snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n");
 720
 721         snd_gf1_dma_done(gus);
 722         return 0;
 723 }
 724
 725 static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream)
 726 {
 727         struct snd_pcm_runtime *runtime = substream->runtime;
 728         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 729
 730         gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
 731         gus->pcm_cap_substream = substream;
 732         substream->runtime->hw = snd_gf1_pcm_capture;
 733         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
 734         snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
 735         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 736                                       &hw_constraints_clocks);
 737         return 0;
 738 }
 739
 740 static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream)
 741 {
 742         struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
 743
 744         gus->pcm_cap_substream = NULL;
 745         snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
 746         return 0;
 747 }
 748
 749 static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 750 {
 751         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 752         uinfo->count = 2;
 753         uinfo->value.integer.min = 0;
 754         uinfo->value.integer.max = 127;
 755         return 0;
 756 }
 757
 758 static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 759 {
 760         struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
 761         unsigned long flags;
 762
 763         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
 764         ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
 765         ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
 766         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
 767         return 0;
 768 }
 769
 770 static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 771 {
 772         struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
 773         unsigned long flags;
 774         int change;
 775         unsigned int idx;
 776         unsigned short val1, val2, vol;
 777         struct gus_pcm_private *pcmp;
 778         struct snd_gus_voice *pvoice;
 779
 780         val1 = ucontrol->value.integer.value[0] & 127;
 781         val2 = ucontrol->value.integer.value[1] & 127;
 782         spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
 783         change = val1 != gus->gf1.pcm_volume_level_left1 ||
 784                  val2 != gus->gf1.pcm_volume_level_right1;
 785         gus->gf1.pcm_volume_level_left1 = val1;
 786         gus->gf1.pcm_volume_level_right1 = val2;
 787         gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
 788         gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
 789         spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
 790         /* are we active? */
 791         spin_lock_irqsave(&gus->voice_alloc, flags);
 792         for (idx = 0; idx < 32; idx++) {
 793                 pvoice = &gus->gf1.voices[idx];
 794                 if (!pvoice->pcm)
 795                         continue;
 796                 pcmp = pvoice->private_data;
 797                 if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
 798                         continue;
 799                 /* load real volume - better precision */
 800                 spin_lock(&gus->reg_lock);
 801                 snd_gf1_select_voice(gus, pvoice->number);
 802                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 803                 vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
 804                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
 805                 pcmp->final_volume = 1;
 806                 spin_unlock(&gus->reg_lock);
 807         }
 808         spin_unlock_irqrestore(&gus->voice_alloc, flags);
 809         return change;
 810 }
 811
 812 static struct snd_kcontrol_new snd_gf1_pcm_volume_control =
 813 {
 814         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 815         .name = "PCM Playback Volume",
 816         .info = snd_gf1_pcm_volume_info,
 817         .get = snd_gf1_pcm_volume_get,
 818         .put = snd_gf1_pcm_volume_put
 819 };
 820
 821 static struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
 822 {
 823         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 824         .name = "GPCM Playback Volume",
 825         .info = snd_gf1_pcm_volume_info,
 826         .get = snd_gf1_pcm_volume_get,
 827         .put = snd_gf1_pcm_volume_put
 828 };
 829
 830 static struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
 831         .open =         snd_gf1_pcm_playback_open,
 832         .close =        snd_gf1_pcm_playback_close,
 833         .ioctl =        snd_pcm_lib_ioctl,
 834         .hw_params =    snd_gf1_pcm_playback_hw_params,
 835         .hw_free =      snd_gf1_pcm_playback_hw_free,
 836         .prepare =      snd_gf1_pcm_playback_prepare,
 837         .trigger =      snd_gf1_pcm_playback_trigger,
 838         .pointer =      snd_gf1_pcm_playback_pointer,
 839         .copy =         snd_gf1_pcm_playback_copy,
 840         .silence =      snd_gf1_pcm_playback_silence,
 841 };
 842
 843 static struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
 844         .open =         snd_gf1_pcm_capture_open,
 845         .close =        snd_gf1_pcm_capture_close,
 846         .ioctl =        snd_pcm_lib_ioctl,
 847         .hw_params =    snd_gf1_pcm_capture_hw_params,
 848         .hw_free =      snd_gf1_pcm_capture_hw_free,
 849         .prepare =      snd_gf1_pcm_capture_prepare,
 850         .trigger =      snd_gf1_pcm_capture_trigger,
 851         .pointer =      snd_gf1_pcm_capture_pointer,
 852 };
 853
 854 int snd_gf1_pcm_new(struct snd_gus_card *gus, int pcm_dev, int control_index)
 855 {
 856         struct snd_card *card;
 857         struct snd_kcontrol *kctl;
 858         struct snd_pcm *pcm;
 859         struct snd_pcm_substream *substream;
 860         int capture, err;
 861
 862         card = gus->card;
 863         capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
 864         err = snd_pcm_new(card,
 865                           gus->interwave ? "AMD InterWave" : "GF1",
 866                           pcm_dev,
 867                           gus->gf1.pcm_channels / 2,
 868                           capture,
 869                           &pcm);
 870         if (err < 0)
 871                 return err;
 872         pcm->private_data = gus;
 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         return 0;
 907 }
 908