sound/pci/mixart/mixart.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Driver for Digigram miXart soundcards
   4  *
   5  * main file with alsa callbacks
   6  *
   7  * Copyright (c) 2003 by Digigram <alsa@digigram.com>
   8  */
   9
  10
  11 #include <linux/init.h>
  12 #include <linux/interrupt.h>
  13 #include <linux/pci.h>
  14 #include <linux/dma-mapping.h>
  15 #include <linux/module.h>
  16 #include <linux/mutex.h>
  17 #include <linux/slab.h>
  18
  19 #include <sound/core.h>
  20 #include <sound/initval.h>
  21 #include <sound/info.h>
  22 #include <sound/control.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include "mixart.h"
  26 #include "mixart_hwdep.h"
  27 #include "mixart_core.h"
  28 #include "mixart_mixer.h"
  29
  30 #define CARD_NAME "miXart"
  31
  32 MODULE_AUTHOR("Digigram <alsa@digigram.com>");
  33 MODULE_DESCRIPTION("Digigram " CARD_NAME);
  34 MODULE_LICENSE("GPL");
  35 MODULE_SUPPORTED_DEVICE("{{Digigram," CARD_NAME "}}");
  36
  37 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;             /* Index 0-MAX */
  38 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;              /* ID for this card */
  39 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
  40
  41 module_param_array(index, int, NULL, 0444);
  42 MODULE_PARM_DESC(index, "Index value for Digigram " CARD_NAME " soundcard.");
  43 module_param_array(id, charp, NULL, 0444);
  44 MODULE_PARM_DESC(id, "ID string for Digigram " CARD_NAME " soundcard.");
  45 module_param_array(enable, bool, NULL, 0444);
  46 MODULE_PARM_DESC(enable, "Enable Digigram " CARD_NAME " soundcard.");
  47
  48 /*
  49  */
  50
  51 static const struct pci_device_id snd_mixart_ids[] = {
  52         { PCI_VDEVICE(MOTOROLA, 0x0003), 0, }, /* MC8240 */
  53         { 0, }
  54 };
  55
  56 MODULE_DEVICE_TABLE(pci, snd_mixart_ids);
  57
  58
  59 static int mixart_set_pipe_state(struct mixart_mgr *mgr,
  60                                  struct mixart_pipe *pipe, int start)
  61 {
  62         struct mixart_group_state_req group_state;
  63         struct mixart_group_state_resp group_state_resp;
  64         struct mixart_msg request;
  65         int err;
  66         u32 system_msg_uid;
  67
  68         switch(pipe->status) {
  69         case PIPE_RUNNING:
  70         case PIPE_CLOCK_SET:
  71                 if(start) return 0; /* already started */
  72                 break;
  73         case PIPE_STOPPED:
  74                 if(!start) return 0; /* already stopped */
  75                 break;
  76         default:
  77                 dev_err(&mgr->pci->dev,
  78                         "error mixart_set_pipe_state called with wrong pipe->status!\n");
  79                 return -EINVAL;      /* function called with wrong pipe status */
  80         }
  81
  82         system_msg_uid = 0x12345678; /* the event ! (take care: the MSB and two LSB's have to be 0) */
  83
  84         /* wait on the last MSG_SYSTEM_SEND_SYNCHRO_CMD command to be really finished */
  85
  86         request.message_id = MSG_SYSTEM_WAIT_SYNCHRO_CMD;
  87         request.uid = (struct mixart_uid){0,0};
  88         request.data = &system_msg_uid;
  89         request.size = sizeof(system_msg_uid);
  90
  91         err = snd_mixart_send_msg_wait_notif(mgr, &request, system_msg_uid);
  92         if(err) {
  93                 dev_err(&mgr->pci->dev,
  94                         "error : MSG_SYSTEM_WAIT_SYNCHRO_CMD was not notified !\n");
  95                 return err;
  96         }
  97
  98         /* start or stop the pipe (1 pipe) */
  99
 100         memset(&group_state, 0, sizeof(group_state));
 101         group_state.pipe_count = 1;
 102         group_state.pipe_uid[0] = pipe->group_uid;
 103
 104         if(start)
 105                 request.message_id = MSG_STREAM_START_STREAM_GRP_PACKET;
 106         else
 107                 request.message_id = MSG_STREAM_STOP_STREAM_GRP_PACKET;
 108
 109         request.uid = pipe->group_uid; /*(struct mixart_uid){0,0};*/
 110         request.data = &group_state;
 111         request.size = sizeof(group_state);
 112
 113         err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
 114         if (err < 0 || group_state_resp.txx_status != 0) {
 115                 dev_err(&mgr->pci->dev,
 116                         "error MSG_STREAM_ST***_STREAM_GRP_PACKET err=%x stat=%x !\n",
 117                         err, group_state_resp.txx_status);
 118                 return -EINVAL;
 119         }
 120
 121         if(start) {
 122                 u32 stat = 0;
 123
 124                 group_state.pipe_count = 0; /* in case of start same command once again with pipe_count=0 */
 125
 126                 err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
 127                 if (err < 0 || group_state_resp.txx_status != 0) {
 128                         dev_err(&mgr->pci->dev,
 129                                 "error MSG_STREAM_START_STREAM_GRP_PACKET err=%x stat=%x !\n",
 130                                 err, group_state_resp.txx_status);
 131                         return -EINVAL;
 132                 }
 133
 134                 /* in case of start send a synchro top */
 135
 136                 request.message_id = MSG_SYSTEM_SEND_SYNCHRO_CMD;
 137                 request.uid = (struct mixart_uid){0,0};
 138                 request.data = NULL;
 139                 request.size = 0;
 140
 141                 err = snd_mixart_send_msg(mgr, &request, sizeof(stat), &stat);
 142                 if (err < 0 || stat != 0) {
 143                         dev_err(&mgr->pci->dev,
 144                                 "error MSG_SYSTEM_SEND_SYNCHRO_CMD err=%x stat=%x !\n",
 145                                 err, stat);
 146                         return -EINVAL;
 147                 }
 148
 149                 pipe->status = PIPE_RUNNING;
 150         }
 151         else /* !start */
 152                 pipe->status = PIPE_STOPPED;
 153
 154         return 0;
 155 }
 156
 157
 158 static int mixart_set_clock(struct mixart_mgr *mgr,
 159                             struct mixart_pipe *pipe, unsigned int rate)
 160 {
 161         struct mixart_msg request;
 162         struct mixart_clock_properties clock_properties;
 163         struct mixart_clock_properties_resp clock_prop_resp;
 164         int err;
 165
 166         switch(pipe->status) {
 167         case PIPE_CLOCK_SET:
 168                 break;
 169         case PIPE_RUNNING:
 170                 if(rate != 0)
 171                         break;
 172                 /* fall through */
 173         default:
 174                 if(rate == 0)
 175                         return 0; /* nothing to do */
 176                 else {
 177                         dev_err(&mgr->pci->dev,
 178                                 "error mixart_set_clock(%d) called with wrong pipe->status !\n",
 179                                 rate);
 180                         return -EINVAL;
 181                 }
 182         }
 183
 184         memset(&clock_properties, 0, sizeof(clock_properties));
 185         clock_properties.clock_generic_type = (rate != 0) ? CGT_INTERNAL_CLOCK : CGT_NO_CLOCK;
 186         clock_properties.clock_mode = CM_STANDALONE;
 187         clock_properties.frequency = rate;
 188         clock_properties.nb_callers = 1; /* only one entry in uid_caller ! */
 189         clock_properties.uid_caller[0] = pipe->group_uid;
 190
 191         dev_dbg(&mgr->pci->dev, "mixart_set_clock to %d kHz\n", rate);
 192
 193         request.message_id = MSG_CLOCK_SET_PROPERTIES;
 194         request.uid = mgr->uid_console_manager;
 195         request.data = &clock_properties;
 196         request.size = sizeof(clock_properties);
 197
 198         err = snd_mixart_send_msg(mgr, &request, sizeof(clock_prop_resp), &clock_prop_resp);
 199         if (err < 0 || clock_prop_resp.status != 0 || clock_prop_resp.clock_mode != CM_STANDALONE) {
 200                 dev_err(&mgr->pci->dev,
 201                         "error MSG_CLOCK_SET_PROPERTIES err=%x stat=%x mod=%x !\n",
 202                         err, clock_prop_resp.status, clock_prop_resp.clock_mode);
 203                 return -EINVAL;
 204         }
 205
 206         if(rate)  pipe->status = PIPE_CLOCK_SET;
 207         else      pipe->status = PIPE_RUNNING;
 208
 209         return 0;
 210 }
 211
 212
 213 /*
 214  *  Allocate or reference output pipe for analog IOs (pcmp0/1)
 215  */
 216 struct mixart_pipe *
 217 snd_mixart_add_ref_pipe(struct snd_mixart *chip, int pcm_number, int capture,
 218                         int monitoring)
 219 {
 220         int stream_count;
 221         struct mixart_pipe *pipe;
 222         struct mixart_msg request;
 223
 224         if(capture) {
 225                 if (pcm_number == MIXART_PCM_ANALOG) {
 226                         pipe = &(chip->pipe_in_ana);  /* analog inputs */
 227                 } else {
 228                         pipe = &(chip->pipe_in_dig); /* digital inputs */
 229                 }
 230                 request.message_id = MSG_STREAM_ADD_OUTPUT_GROUP;
 231                 stream_count = MIXART_CAPTURE_STREAMS;
 232         } else {
 233                 if (pcm_number == MIXART_PCM_ANALOG) {
 234                         pipe = &(chip->pipe_out_ana);  /* analog outputs */
 235                 } else {
 236                         pipe = &(chip->pipe_out_dig);  /* digital outputs */
 237                 }
 238                 request.message_id = MSG_STREAM_ADD_INPUT_GROUP;
 239                 stream_count = MIXART_PLAYBACK_STREAMS;
 240         }
 241
 242         /* a new stream is opened and there are already all streams in use */
 243         if( (monitoring == 0) && (pipe->references >= stream_count) ) {
 244                 return NULL;
 245         }
 246
 247         /* pipe is not yet defined */
 248         if( pipe->status == PIPE_UNDEFINED ) {
 249                 int err, i;
 250                 struct {
 251                         struct mixart_streaming_group_req sgroup_req;
 252                         struct mixart_streaming_group sgroup_resp;
 253                 } *buf;
 254
 255                 dev_dbg(chip->card->dev,
 256                         "add_ref_pipe audio chip(%d) pcm(%d)\n",
 257                         chip->chip_idx, pcm_number);
 258
 259                 buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 260                 if (!buf)
 261                         return NULL;
 262
 263                 request.uid = (struct mixart_uid){0,0};      /* should be StreamManagerUID, but zero is OK if there is only one ! */
 264                 request.data = &buf->sgroup_req;
 265                 request.size = sizeof(buf->sgroup_req);
 266
 267                 memset(&buf->sgroup_req, 0, sizeof(buf->sgroup_req));
 268
 269                 buf->sgroup_req.stream_count = stream_count;
 270                 buf->sgroup_req.channel_count = 2;
 271                 buf->sgroup_req.latency = 256;
 272                 buf->sgroup_req.connector = pipe->uid_left_connector;  /* the left connector */
 273
 274                 for (i=0; i<stream_count; i++) {
 275                         int j;
 276                         struct mixart_flowinfo *flowinfo;
 277                         struct mixart_bufferinfo *bufferinfo;
 278
 279                         /* we don't yet know the format, so config 16 bit pcm audio for instance */
 280                         buf->sgroup_req.stream_info[i].size_max_byte_frame = 1024;
 281                         buf->sgroup_req.stream_info[i].size_max_sample_frame = 256;
 282                         buf->sgroup_req.stream_info[i].nb_bytes_max_per_sample = MIXART_FLOAT_P__4_0_TO_HEX; /* is 4.0f */
 283
 284                         /* find the right bufferinfo_array */
 285                         j = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (pcm_number * (MIXART_PLAYBACK_STREAMS + MIXART_CAPTURE_STREAMS)) + i;
 286                         if(capture) j += MIXART_PLAYBACK_STREAMS; /* in the array capture is behind playback */
 287
 288                         buf->sgroup_req.flow_entry[i] = j;
 289
 290                         flowinfo = (struct mixart_flowinfo *)chip->mgr->flowinfo.area;
 291                         flowinfo[j].bufferinfo_array_phy_address = (u32)chip->mgr->bufferinfo.addr + (j * sizeof(struct mixart_bufferinfo));
 292                         flowinfo[j].bufferinfo_count = 1;               /* 1 will set the miXart to ring-buffer mode ! */
 293
 294                         bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
 295                         bufferinfo[j].buffer_address = 0;               /* buffer is not yet allocated */
 296                         bufferinfo[j].available_length = 0;             /* buffer is not yet allocated */
 297
 298                         /* construct the identifier of the stream buffer received in the interrupts ! */
 299                         bufferinfo[j].buffer_id = (chip->chip_idx << MIXART_NOTIFY_CARD_OFFSET) + (pcm_number << MIXART_NOTIFY_PCM_OFFSET ) + i;
 300                         if(capture) {
 301                                 bufferinfo[j].buffer_id |= MIXART_NOTIFY_CAPT_MASK;
 302                         }
 303                 }
 304
 305                 err = snd_mixart_send_msg(chip->mgr, &request, sizeof(buf->sgroup_resp), &buf->sgroup_resp);
 306                 if((err < 0) || (buf->sgroup_resp.status != 0)) {
 307                         dev_err(chip->card->dev,
 308                                 "error MSG_STREAM_ADD_**PUT_GROUP err=%x stat=%x !\n",
 309                                 err, buf->sgroup_resp.status);
 310                         kfree(buf);
 311                         return NULL;
 312                 }
 313
 314                 pipe->group_uid = buf->sgroup_resp.group;     /* id of the pipe, as returned by embedded */
 315                 pipe->stream_count = buf->sgroup_resp.stream_count;
 316                 /* pipe->stream_uid[i] = buf->sgroup_resp.stream[i].stream_uid; */
 317
 318                 pipe->status = PIPE_STOPPED;
 319                 kfree(buf);
 320         }
 321
 322         if(monitoring)  pipe->monitoring = 1;
 323         else            pipe->references++;
 324
 325         return pipe;
 326 }
 327
 328
 329 int snd_mixart_kill_ref_pipe(struct mixart_mgr *mgr,
 330                              struct mixart_pipe *pipe, int monitoring)
 331 {
 332         int err = 0;
 333
 334         if(pipe->status == PIPE_UNDEFINED)
 335                 return 0;
 336
 337         if(monitoring)
 338                 pipe->monitoring = 0;
 339         else
 340                 pipe->references--;
 341
 342         if((pipe->references <= 0) && (pipe->monitoring == 0)) {
 343
 344                 struct mixart_msg request;
 345                 struct mixart_delete_group_resp delete_resp;
 346
 347                 /* release the clock */
 348                 err = mixart_set_clock( mgr, pipe, 0);
 349                 if( err < 0 ) {
 350                         dev_err(&mgr->pci->dev,
 351                                 "mixart_set_clock(0) return error!\n");
 352                 }
 353
 354                 /* stop the pipe */
 355                 err = mixart_set_pipe_state(mgr, pipe, 0);
 356                 if( err < 0 ) {
 357                         dev_err(&mgr->pci->dev, "error stopping pipe!\n");
 358                 }
 359
 360                 request.message_id = MSG_STREAM_DELETE_GROUP;
 361                 request.uid = (struct mixart_uid){0,0};
 362                 request.data = &pipe->group_uid;            /* the streaming group ! */
 363                 request.size = sizeof(pipe->group_uid);
 364
 365                 /* delete the pipe */
 366                 err = snd_mixart_send_msg(mgr, &request, sizeof(delete_resp), &delete_resp);
 367                 if ((err < 0) || (delete_resp.status != 0)) {
 368                         dev_err(&mgr->pci->dev,
 369                                 "error MSG_STREAM_DELETE_GROUP err(%x), status(%x)\n",
 370                                 err, delete_resp.status);
 371                 }
 372
 373                 pipe->group_uid = (struct mixart_uid){0,0};
 374                 pipe->stream_count = 0;
 375                 pipe->status = PIPE_UNDEFINED;
 376         }
 377
 378         return err;
 379 }
 380
 381 static int mixart_set_stream_state(struct mixart_stream *stream, int start)
 382 {
 383         struct snd_mixart *chip;
 384         struct mixart_stream_state_req stream_state_req;
 385         struct mixart_msg request;
 386
 387         if(!stream->substream)
 388                 return -EINVAL;
 389
 390         memset(&stream_state_req, 0, sizeof(stream_state_req));
 391         stream_state_req.stream_count = 1;
 392         stream_state_req.stream_info.stream_desc.uid_pipe = stream->pipe->group_uid;
 393         stream_state_req.stream_info.stream_desc.stream_idx = stream->substream->number;
 394
 395         if (stream->substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 396                 request.message_id = start ? MSG_STREAM_START_INPUT_STAGE_PACKET : MSG_STREAM_STOP_INPUT_STAGE_PACKET;
 397         else
 398                 request.message_id = start ? MSG_STREAM_START_OUTPUT_STAGE_PACKET : MSG_STREAM_STOP_OUTPUT_STAGE_PACKET;
 399
 400         request.uid = (struct mixart_uid){0,0};
 401         request.data = &stream_state_req;
 402         request.size = sizeof(stream_state_req);
 403
 404         stream->abs_period_elapsed = 0;            /* reset stream pos      */
 405         stream->buf_periods = 0;
 406         stream->buf_period_frag = 0;
 407
 408         chip = snd_pcm_substream_chip(stream->substream);
 409
 410         return snd_mixart_send_msg_nonblock(chip->mgr, &request);
 411 }
 412
 413 /*
 414  *  Trigger callback
 415  */
 416
 417 static int snd_mixart_trigger(struct snd_pcm_substream *subs, int cmd)
 418 {
 419         struct mixart_stream *stream = subs->runtime->private_data;
 420
 421         switch (cmd) {
 422         case SNDRV_PCM_TRIGGER_START:
 423
 424                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_START\n");
 425
 426                 /* START_STREAM */
 427                 if( mixart_set_stream_state(stream, 1) )
 428                         return -EINVAL;
 429
 430                 stream->status = MIXART_STREAM_STATUS_RUNNING;
 431
 432                 break;
 433         case SNDRV_PCM_TRIGGER_STOP:
 434
 435                 /* STOP_STREAM */
 436                 if( mixart_set_stream_state(stream, 0) )
 437                         return -EINVAL;
 438
 439                 stream->status = MIXART_STREAM_STATUS_OPEN;
 440
 441                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_STOP\n");
 442
 443                 break;
 444
 445         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 446                 /* TODO */
 447                 stream->status = MIXART_STREAM_STATUS_PAUSE;
 448                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_PUSH\n");
 449                 break;
 450         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 451                 /* TODO */
 452                 stream->status = MIXART_STREAM_STATUS_RUNNING;
 453                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_RELEASE\n");
 454                 break;
 455         default:
 456                 return -EINVAL;
 457         }
 458         return 0;
 459 }
 460
 461 static int mixart_sync_nonblock_events(struct mixart_mgr *mgr)
 462 {
 463         unsigned long timeout = jiffies + HZ;
 464         while (atomic_read(&mgr->msg_processed) > 0) {
 465                 if (time_after(jiffies, timeout)) {
 466                         dev_err(&mgr->pci->dev,
 467                                 "mixart: cannot process nonblock events!\n");
 468                         return -EBUSY;
 469                 }
 470                 schedule_timeout_uninterruptible(1);
 471         }
 472         return 0;
 473 }
 474
 475 /*
 476  *  prepare callback for all pcms
 477  */
 478 static int snd_mixart_prepare(struct snd_pcm_substream *subs)
 479 {
 480         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 481         struct mixart_stream *stream = subs->runtime->private_data;
 482
 483         /* TODO de façon non bloquante, réappliquer les hw_params (rate, bits, codec) */
 484
 485         dev_dbg(chip->card->dev, "snd_mixart_prepare\n");
 486
 487         mixart_sync_nonblock_events(chip->mgr);
 488
 489         /* only the first stream can choose the sample rate */
 490         /* the further opened streams will be limited to its frequency (see open) */
 491         if(chip->mgr->ref_count_rate == 1)
 492                 chip->mgr->sample_rate = subs->runtime->rate;
 493
 494         /* set the clock only once (first stream) on the same pipe */
 495         if(stream->pipe->references == 1) {
 496                 if( mixart_set_clock(chip->mgr, stream->pipe, subs->runtime->rate) )
 497                         return -EINVAL;
 498         }
 499
 500         return 0;
 501 }
 502
 503
 504 static int mixart_set_format(struct mixart_stream *stream, snd_pcm_format_t format)
 505 {
 506         int err;
 507         struct snd_mixart *chip;
 508         struct mixart_msg request;
 509         struct mixart_stream_param_desc stream_param;
 510         struct mixart_return_uid resp;
 511
 512         chip = snd_pcm_substream_chip(stream->substream);
 513
 514         memset(&stream_param, 0, sizeof(stream_param));
 515
 516         stream_param.coding_type = CT_LINEAR;
 517         stream_param.number_of_channel = stream->channels;
 518
 519         stream_param.sampling_freq = chip->mgr->sample_rate;
 520         if(stream_param.sampling_freq == 0)
 521                 stream_param.sampling_freq = 44100; /* if frequency not yet defined, use some default */
 522
 523         switch(format){
 524         case SNDRV_PCM_FORMAT_U8:
 525                 stream_param.sample_type = ST_INTEGER_8;
 526                 stream_param.sample_size = 8;
 527                 break;
 528         case SNDRV_PCM_FORMAT_S16_LE:
 529                 stream_param.sample_type = ST_INTEGER_16LE;
 530                 stream_param.sample_size = 16;
 531                 break;
 532         case SNDRV_PCM_FORMAT_S16_BE:
 533                 stream_param.sample_type = ST_INTEGER_16BE;
 534                 stream_param.sample_size = 16;
 535                 break;
 536         case SNDRV_PCM_FORMAT_S24_3LE:
 537                 stream_param.sample_type = ST_INTEGER_24LE;
 538                 stream_param.sample_size = 24;
 539                 break;
 540         case SNDRV_PCM_FORMAT_S24_3BE:
 541                 stream_param.sample_type = ST_INTEGER_24BE;
 542                 stream_param.sample_size = 24;
 543                 break;
 544         case SNDRV_PCM_FORMAT_FLOAT_LE:
 545                 stream_param.sample_type = ST_FLOATING_POINT_32LE;
 546                 stream_param.sample_size = 32;
 547                 break;
 548         case  SNDRV_PCM_FORMAT_FLOAT_BE:
 549                 stream_param.sample_type = ST_FLOATING_POINT_32BE;
 550                 stream_param.sample_size = 32;
 551                 break;
 552         default:
 553                 dev_err(chip->card->dev,
 554                         "error mixart_set_format() : unknown format\n");
 555                 return -EINVAL;
 556         }
 557
 558         dev_dbg(chip->card->dev,
 559                 "set SNDRV_PCM_FORMAT sample_type(%d) sample_size(%d) freq(%d) channels(%d)\n",
 560                    stream_param.sample_type, stream_param.sample_size, stream_param.sampling_freq, stream->channels);
 561
 562         /* TODO: what else to configure ? */
 563         /* stream_param.samples_per_frame = 2; */
 564         /* stream_param.bytes_per_frame = 4; */
 565         /* stream_param.bytes_per_sample = 2; */
 566
 567         stream_param.pipe_count = 1;      /* set to 1 */
 568         stream_param.stream_count = 1;    /* set to 1 */
 569         stream_param.stream_desc[0].uid_pipe = stream->pipe->group_uid;
 570         stream_param.stream_desc[0].stream_idx = stream->substream->number;
 571
 572         request.message_id = MSG_STREAM_SET_INPUT_STAGE_PARAM;
 573         request.uid = (struct mixart_uid){0,0};
 574         request.data = &stream_param;
 575         request.size = sizeof(stream_param);
 576
 577         err = snd_mixart_send_msg(chip->mgr, &request, sizeof(resp), &resp);
 578         if((err < 0) || resp.error_code) {
 579                 dev_err(chip->card->dev,
 580                         "MSG_STREAM_SET_INPUT_STAGE_PARAM err=%x; resp=%x\n",
 581                         err, resp.error_code);
 582                 return -EINVAL;
 583         }
 584         return 0;
 585 }
 586
 587
 588 /*
 589  *  HW_PARAMS callback for all pcms
 590  */
 591 static int snd_mixart_hw_params(struct snd_pcm_substream *subs,
 592                                 struct snd_pcm_hw_params *hw)
 593 {
 594         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 595         struct mixart_mgr *mgr = chip->mgr;
 596         struct mixart_stream *stream = subs->runtime->private_data;
 597         snd_pcm_format_t format;
 598         int err;
 599         int channels;
 600
 601         /* set up channels */
 602         channels = params_channels(hw);
 603
 604         /*  set up format for the stream */
 605         format = params_format(hw);
 606
 607         mutex_lock(&mgr->setup_mutex);
 608
 609         /* update the stream levels */
 610         if( stream->pcm_number <= MIXART_PCM_DIGITAL ) {
 611                 int is_aes = stream->pcm_number > MIXART_PCM_ANALOG;
 612                 if( subs->stream == SNDRV_PCM_STREAM_PLAYBACK )
 613                         mixart_update_playback_stream_level(chip, is_aes, subs->number);
 614                 else
 615                         mixart_update_capture_stream_level( chip, is_aes);
 616         }
 617
 618         stream->channels = channels;
 619
 620         /* set the format to the board */
 621         err = mixart_set_format(stream, format);
 622         if(err < 0) {
 623                 mutex_unlock(&mgr->setup_mutex);
 624                 return err;
 625         }
 626
 627         /* allocate buffer */
 628         err = snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw));
 629
 630         if (err > 0) {
 631                 struct mixart_bufferinfo *bufferinfo;
 632                 int i = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (stream->pcm_number * (MIXART_PLAYBACK_STREAMS+MIXART_CAPTURE_STREAMS)) + subs->number;
 633                 if( subs->stream == SNDRV_PCM_STREAM_CAPTURE ) {
 634                         i += MIXART_PLAYBACK_STREAMS; /* in array capture is behind playback */
 635                 }
 636
 637                 bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
 638                 bufferinfo[i].buffer_address = subs->runtime->dma_addr;
 639                 bufferinfo[i].available_length = subs->runtime->dma_bytes;
 640                 /* bufferinfo[i].buffer_id  is already defined */
 641
 642                 dev_dbg(chip->card->dev,
 643                         "snd_mixart_hw_params(pcm %d) : dma_addr(%x) dma_bytes(%x) subs-number(%d)\n",
 644                         i, bufferinfo[i].buffer_address,
 645                                 bufferinfo[i].available_length,
 646                                 subs->number);
 647         }
 648         mutex_unlock(&mgr->setup_mutex);
 649
 650         return err;
 651 }
 652
 653 static int snd_mixart_hw_free(struct snd_pcm_substream *subs)
 654 {
 655         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 656         snd_pcm_lib_free_pages(subs);
 657         mixart_sync_nonblock_events(chip->mgr);
 658         return 0;
 659 }
 660
 661
 662
 663 /*
 664  *  TODO CONFIGURATION SPACE for all pcms, mono pcm must update channels_max
 665  */
 666 static const struct snd_pcm_hardware snd_mixart_analog_caps =
 667 {
 668         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 669                               SNDRV_PCM_INFO_MMAP_VALID |
 670                               SNDRV_PCM_INFO_PAUSE),
 671         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
 672                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
 673                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
 674                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
 675         .rates            = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 676         .rate_min         = 8000,
 677         .rate_max         = 48000,
 678         .channels_min     = 1,
 679         .channels_max     = 2,
 680         .buffer_bytes_max = (32*1024),
 681         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
 682         .period_bytes_max = (16*1024),
 683         .periods_min      = 2,
 684         .periods_max      = (32*1024/256),
 685 };
 686
 687 static const struct snd_pcm_hardware snd_mixart_digital_caps =
 688 {
 689         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 690                               SNDRV_PCM_INFO_MMAP_VALID |
 691                               SNDRV_PCM_INFO_PAUSE),
 692         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
 693                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
 694                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
 695                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
 696         .rates            = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
 697         .rate_min         = 32000,
 698         .rate_max         = 48000,
 699         .channels_min     = 1,
 700         .channels_max     = 2,
 701         .buffer_bytes_max = (32*1024),
 702         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
 703         .period_bytes_max = (16*1024),
 704         .periods_min      = 2,
 705         .periods_max      = (32*1024/256),
 706 };
 707
 708
 709 static int snd_mixart_playback_open(struct snd_pcm_substream *subs)
 710 {
 711         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
 712         struct mixart_mgr        *mgr = chip->mgr;
 713         struct snd_pcm_runtime *runtime = subs->runtime;
 714         struct snd_pcm *pcm = subs->pcm;
 715         struct mixart_stream     *stream;
 716         struct mixart_pipe       *pipe;
 717         int err = 0;
 718         int pcm_number;
 719
 720         mutex_lock(&mgr->setup_mutex);
 721
 722         if ( pcm == chip->pcm ) {
 723                 pcm_number = MIXART_PCM_ANALOG;
 724                 runtime->hw = snd_mixart_analog_caps;
 725         } else {
 726                 snd_BUG_ON(pcm != chip->pcm_dig);
 727                 pcm_number = MIXART_PCM_DIGITAL;
 728                 runtime->hw = snd_mixart_digital_caps;
 729         }
 730         dev_dbg(chip->card->dev,
 731                 "snd_mixart_playback_open C%d/P%d/Sub%d\n",
 732                 chip->chip_idx, pcm_number, subs->number);
 733
 734         /* get stream info */
 735         stream = &(chip->playback_stream[pcm_number][subs->number]);
 736
 737         if (stream->status != MIXART_STREAM_STATUS_FREE){
 738                 /* streams in use */
 739                 dev_err(chip->card->dev,
 740                         "snd_mixart_playback_open C%d/P%d/Sub%d in use\n",
 741                         chip->chip_idx, pcm_number, subs->number);
 742                 err = -EBUSY;
 743                 goto _exit_open;
 744         }
 745
 746         /* get pipe pointer (out pipe) */
 747         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 0, 0);
 748
 749         if (pipe == NULL) {
 750                 err = -EINVAL;
 751                 goto _exit_open;
 752         }
 753
 754         /* start the pipe if necessary */
 755         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
 756         if( err < 0 ) {
 757                 dev_err(chip->card->dev, "error starting pipe!\n");
 758                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
 759                 err = -EINVAL;
 760                 goto _exit_open;
 761         }
 762
 763         stream->pipe        = pipe;
 764         stream->pcm_number  = pcm_number;
 765         stream->status      = MIXART_STREAM_STATUS_OPEN;
 766         stream->substream   = subs;
 767         stream->channels    = 0; /* not configured yet */
 768
 769         runtime->private_data = stream;
 770
 771         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 772         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
 773
 774         /* if a sample rate is already used, another stream cannot change */
 775         if(mgr->ref_count_rate++) {
 776                 if(mgr->sample_rate) {
 777                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
 778                 }
 779         }
 780
 781  _exit_open:
 782         mutex_unlock(&mgr->setup_mutex);
 783
 784         return err;
 785 }
 786
 787
 788 static int snd_mixart_capture_open(struct snd_pcm_substream *subs)
 789 {
 790         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
 791         struct mixart_mgr        *mgr = chip->mgr;
 792         struct snd_pcm_runtime *runtime = subs->runtime;
 793         struct snd_pcm *pcm = subs->pcm;
 794         struct mixart_stream     *stream;
 795         struct mixart_pipe       *pipe;
 796         int err = 0;
 797         int pcm_number;
 798
 799         mutex_lock(&mgr->setup_mutex);
 800
 801         if ( pcm == chip->pcm ) {
 802                 pcm_number = MIXART_PCM_ANALOG;
 803                 runtime->hw = snd_mixart_analog_caps;
 804         } else {
 805                 snd_BUG_ON(pcm != chip->pcm_dig);
 806                 pcm_number = MIXART_PCM_DIGITAL;
 807                 runtime->hw = snd_mixart_digital_caps;
 808         }
 809
 810         runtime->hw.channels_min = 2; /* for instance, no mono */
 811
 812         dev_dbg(chip->card->dev, "snd_mixart_capture_open C%d/P%d/Sub%d\n",
 813                 chip->chip_idx, pcm_number, subs->number);
 814
 815         /* get stream info */
 816         stream = &(chip->capture_stream[pcm_number]);
 817
 818         if (stream->status != MIXART_STREAM_STATUS_FREE){
 819                 /* streams in use */
 820                 dev_err(chip->card->dev,
 821                         "snd_mixart_capture_open C%d/P%d/Sub%d in use\n",
 822                         chip->chip_idx, pcm_number, subs->number);
 823                 err = -EBUSY;
 824                 goto _exit_open;
 825         }
 826
 827         /* get pipe pointer (in pipe) */
 828         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 1, 0);
 829
 830         if (pipe == NULL) {
 831                 err = -EINVAL;
 832                 goto _exit_open;
 833         }
 834
 835         /* start the pipe if necessary */
 836         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
 837         if( err < 0 ) {
 838                 dev_err(chip->card->dev, "error starting pipe!\n");
 839                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
 840                 err = -EINVAL;
 841                 goto _exit_open;
 842         }
 843
 844         stream->pipe        = pipe;
 845         stream->pcm_number  = pcm_number;
 846         stream->status      = MIXART_STREAM_STATUS_OPEN;
 847         stream->substream   = subs;
 848         stream->channels    = 0; /* not configured yet */
 849
 850         runtime->private_data = stream;
 851
 852         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 853         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
 854
 855         /* if a sample rate is already used, another stream cannot change */
 856         if(mgr->ref_count_rate++) {
 857                 if(mgr->sample_rate) {
 858                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
 859                 }
 860         }
 861
 862  _exit_open:
 863         mutex_unlock(&mgr->setup_mutex);
 864
 865         return err;
 866 }
 867
 868
 869
 870 static int snd_mixart_close(struct snd_pcm_substream *subs)
 871 {
 872         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 873         struct mixart_mgr *mgr = chip->mgr;
 874         struct mixart_stream *stream = subs->runtime->private_data;
 875
 876         mutex_lock(&mgr->setup_mutex);
 877
 878         dev_dbg(chip->card->dev, "snd_mixart_close C%d/P%d/Sub%d\n",
 879                 chip->chip_idx, stream->pcm_number, subs->number);
 880
 881         /* sample rate released */
 882         if(--mgr->ref_count_rate == 0) {
 883                 mgr->sample_rate = 0;
 884         }
 885
 886         /* delete pipe */
 887         if (snd_mixart_kill_ref_pipe(mgr, stream->pipe, 0 ) < 0) {
 888
 889                 dev_err(chip->card->dev,
 890                         "error snd_mixart_kill_ref_pipe C%dP%d\n",
 891                         chip->chip_idx, stream->pcm_number);
 892         }
 893
 894         stream->pipe      = NULL;
 895         stream->status    = MIXART_STREAM_STATUS_FREE;
 896         stream->substream = NULL;
 897
 898         mutex_unlock(&mgr->setup_mutex);
 899         return 0;
 900 }
 901
 902
 903 static snd_pcm_uframes_t snd_mixart_stream_pointer(struct snd_pcm_substream *subs)
 904 {
 905         struct snd_pcm_runtime *runtime = subs->runtime;
 906         struct mixart_stream   *stream  = runtime->private_data;
 907
 908         return (snd_pcm_uframes_t)((stream->buf_periods * runtime->period_size) + stream->buf_period_frag);
 909 }
 910
 911
 912
 913 static const struct snd_pcm_ops snd_mixart_playback_ops = {
 914         .open      = snd_mixart_playback_open,
 915         .close     = snd_mixart_close,
 916         .ioctl     = snd_pcm_lib_ioctl,
 917         .prepare   = snd_mixart_prepare,
 918         .hw_params = snd_mixart_hw_params,
 919         .hw_free   = snd_mixart_hw_free,
 920         .trigger   = snd_mixart_trigger,
 921         .pointer   = snd_mixart_stream_pointer,
 922 };
 923
 924 static const struct snd_pcm_ops snd_mixart_capture_ops = {
 925         .open      = snd_mixart_capture_open,
 926         .close     = snd_mixart_close,
 927         .ioctl     = snd_pcm_lib_ioctl,
 928         .prepare   = snd_mixart_prepare,
 929         .hw_params = snd_mixart_hw_params,
 930         .hw_free   = snd_mixart_hw_free,
 931         .trigger   = snd_mixart_trigger,
 932         .pointer   = snd_mixart_stream_pointer,
 933 };
 934
 935 static void preallocate_buffers(struct snd_mixart *chip, struct snd_pcm *pcm)
 936 {
 937 #if 0
 938         struct snd_pcm_substream *subs;
 939         int stream;
 940
 941         for (stream = 0; stream < 2; stream++) {
 942                 int idx = 0;
 943                 for (subs = pcm->streams[stream].substream; subs; subs = subs->next, idx++)
 944                         /* set up the unique device id with the chip index */
 945                         subs->dma_device.id = subs->pcm->device << 16 |
 946                                 subs->stream << 8 | (subs->number + 1) |
 947                                 (chip->chip_idx + 1) << 24;
 948         }
 949 #endif
 950         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 951                                               snd_dma_pci_data(chip->mgr->pci), 32*1024, 32*1024);
 952 }
 953
 954 /*
 955  */
 956 static int snd_mixart_pcm_analog(struct snd_mixart *chip)
 957 {
 958         int err;
 959         struct snd_pcm *pcm;
 960         char name[32];
 961
 962         sprintf(name, "miXart analog %d", chip->chip_idx);
 963         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_ANALOG,
 964                                MIXART_PLAYBACK_STREAMS,
 965                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
 966                 dev_err(chip->card->dev,
 967                         "cannot create the analog pcm %d\n", chip->chip_idx);
 968                 return err;
 969         }
 970
 971         pcm->private_data = chip;
 972
 973         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
 974         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
 975
 976         pcm->info_flags = 0;
 977         pcm->nonatomic = true;
 978         strcpy(pcm->name, name);
 979
 980         preallocate_buffers(chip, pcm);
 981
 982         chip->pcm = pcm;
 983         return 0;
 984 }
 985
 986
 987 /*
 988  */
 989 static int snd_mixart_pcm_digital(struct snd_mixart *chip)
 990 {
 991         int err;
 992         struct snd_pcm *pcm;
 993         char name[32];
 994
 995         sprintf(name, "miXart AES/EBU %d", chip->chip_idx);
 996         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_DIGITAL,
 997                                MIXART_PLAYBACK_STREAMS,
 998                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
 999                 dev_err(chip->card->dev,
1000                         "cannot create the digital pcm %d\n", chip->chip_idx);
1001                 return err;
1002         }
1003
1004         pcm->private_data = chip;
1005
1006         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
1007         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
1008
1009         pcm->info_flags = 0;
1010         pcm->nonatomic = true;
1011         strcpy(pcm->name, name);
1012
1013         preallocate_buffers(chip, pcm);
1014
1015         chip->pcm_dig = pcm;
1016         return 0;
1017 }
1018
1019 static int snd_mixart_chip_free(struct snd_mixart *chip)
1020 {
1021         kfree(chip);
1022         return 0;
1023 }
1024
1025 static int snd_mixart_chip_dev_free(struct snd_device *device)
1026 {
1027         struct snd_mixart *chip = device->device_data;
1028         return snd_mixart_chip_free(chip);
1029 }
1030
1031
1032 /*
1033  */
1034 static int snd_mixart_create(struct mixart_mgr *mgr, struct snd_card *card, int idx)
1035 {
1036         int err;
1037         struct snd_mixart *chip;
1038         static struct snd_device_ops ops = {
1039                 .dev_free = snd_mixart_chip_dev_free,
1040         };
1041
1042         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1043         if (!chip)
1044                 return -ENOMEM;
1045
1046         chip->card = card;
1047         chip->chip_idx = idx;
1048         chip->mgr = mgr;
1049
1050         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1051                 snd_mixart_chip_free(chip);
1052                 return err;
1053         }
1054
1055         mgr->chip[idx] = chip;
1056         return 0;
1057 }
1058
1059 int snd_mixart_create_pcm(struct snd_mixart* chip)
1060 {
1061         int err;
1062
1063         err = snd_mixart_pcm_analog(chip);
1064         if (err < 0)
1065                 return err;
1066
1067         if(chip->mgr->board_type == MIXART_DAUGHTER_TYPE_AES) {
1068
1069                 err = snd_mixart_pcm_digital(chip);
1070                 if (err < 0)
1071                         return err;
1072         }
1073         return err;
1074 }
1075
1076
1077 /*
1078  * release all the cards assigned to a manager instance
1079  */
1080 static int snd_mixart_free(struct mixart_mgr *mgr)
1081 {
1082         unsigned int i;
1083
1084         for (i = 0; i < mgr->num_cards; i++) {
1085                 if (mgr->chip[i])
1086                         snd_card_free(mgr->chip[i]->card);
1087         }
1088
1089         /* stop mailbox */
1090         snd_mixart_exit_mailbox(mgr);
1091
1092         /* release irq  */
1093         if (mgr->irq >= 0)
1094                 free_irq(mgr->irq, mgr);
1095
1096         /* reset board if some firmware was loaded */
1097         if(mgr->dsp_loaded) {
1098                 snd_mixart_reset_board(mgr);
1099                 dev_dbg(&mgr->pci->dev, "reset miXart !\n");
1100         }
1101
1102         /* release the i/o ports */
1103         for (i = 0; i < 2; ++i)
1104                 iounmap(mgr->mem[i].virt);
1105
1106         pci_release_regions(mgr->pci);
1107
1108         /* free flowarray */
1109         if(mgr->flowinfo.area) {
1110                 snd_dma_free_pages(&mgr->flowinfo);
1111                 mgr->flowinfo.area = NULL;
1112         }
1113         /* free bufferarray */
1114         if(mgr->bufferinfo.area) {
1115                 snd_dma_free_pages(&mgr->bufferinfo);
1116                 mgr->bufferinfo.area = NULL;
1117         }
1118
1119         pci_disable_device(mgr->pci);
1120         kfree(mgr);
1121         return 0;
1122 }
1123
1124 /*
1125  * proc interface
1126  */
1127
1128 /*
1129   mixart_BA0 proc interface for BAR 0 - read callback
1130  */
1131 static ssize_t snd_mixart_BA0_read(struct snd_info_entry *entry,
1132                                    void *file_private_data,
1133                                    struct file *file, char __user *buf,
1134                                    size_t count, loff_t pos)
1135 {
1136         struct mixart_mgr *mgr = entry->private_data;
1137
1138         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1139         if (copy_to_user_fromio(buf, MIXART_MEM(mgr, pos), count))
1140                 return -EFAULT;
1141         return count;
1142 }
1143
1144 /*
1145   mixart_BA1 proc interface for BAR 1 - read callback
1146  */
1147 static ssize_t snd_mixart_BA1_read(struct snd_info_entry *entry,
1148                                    void *file_private_data,
1149                                    struct file *file, char __user *buf,
1150                                    size_t count, loff_t pos)
1151 {
1152         struct mixart_mgr *mgr = entry->private_data;
1153
1154         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1155         if (copy_to_user_fromio(buf, MIXART_REG(mgr, pos), count))
1156                 return -EFAULT;
1157         return count;
1158 }
1159
1160 static struct snd_info_entry_ops snd_mixart_proc_ops_BA0 = {
1161         .read   = snd_mixart_BA0_read,
1162 };
1163
1164 static struct snd_info_entry_ops snd_mixart_proc_ops_BA1 = {
1165         .read   = snd_mixart_BA1_read,
1166 };
1167
1168
1169 static void snd_mixart_proc_read(struct snd_info_entry *entry,
1170                                  struct snd_info_buffer *buffer)
1171 {
1172         struct snd_mixart *chip = entry->private_data;
1173         u32 ref;
1174
1175         snd_iprintf(buffer, "Digigram miXart (alsa card %d)\n\n", chip->chip_idx);
1176
1177         /* stats available when embedded OS is running */
1178         if (chip->mgr->dsp_loaded & ( 1 << MIXART_MOTHERBOARD_ELF_INDEX)) {
1179                 snd_iprintf(buffer, "- hardware -\n");
1180                 switch (chip->mgr->board_type ) {
1181                 case MIXART_DAUGHTER_TYPE_NONE     : snd_iprintf(buffer, "\tmiXart8 (no daughter board)\n\n"); break;
1182                 case MIXART_DAUGHTER_TYPE_AES      : snd_iprintf(buffer, "\tmiXart8 AES/EBU\n\n"); break;
1183                 case MIXART_DAUGHTER_TYPE_COBRANET : snd_iprintf(buffer, "\tmiXart8 Cobranet\n\n"); break;
1184                 default:                             snd_iprintf(buffer, "\tUNKNOWN!\n\n"); break;
1185                 }
1186
1187                 snd_iprintf(buffer, "- system load -\n");
1188
1189                 /* get perf reference */
1190
1191                 ref = readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_SYSTEM_LOAD_OFFSET));
1192
1193                 if (ref) {
1194                         u32 mailbox   = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_MAILBX_LOAD_OFFSET)) / ref;
1195                         u32 streaming = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_STREAM_LOAD_OFFSET)) / ref;
1196                         u32 interr    = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_INTERR_LOAD_OFFSET)) / ref;
1197
1198                         snd_iprintf(buffer, "\tstreaming          : %d\n", streaming);
1199                         snd_iprintf(buffer, "\tmailbox            : %d\n", mailbox);
1200                         snd_iprintf(buffer, "\tinterrupts handling : %d\n\n", interr);
1201                 }
1202         } /* endif elf loaded */
1203 }
1204
1205 static void snd_mixart_proc_init(struct snd_mixart *chip)
1206 {
1207         struct snd_info_entry *entry;
1208
1209         /* text interface to read perf and temp meters */
1210         snd_card_ro_proc_new(chip->card, "board_info", chip,
1211                              snd_mixart_proc_read);
1212
1213         if (! snd_card_proc_new(chip->card, "mixart_BA0", &entry)) {
1214                 entry->content = SNDRV_INFO_CONTENT_DATA;
1215                 entry->private_data = chip->mgr;
1216                 entry->c.ops = &snd_mixart_proc_ops_BA0;
1217                 entry->size = MIXART_BA0_SIZE;
1218         }
1219         if (! snd_card_proc_new(chip->card, "mixart_BA1", &entry)) {
1220                 entry->content = SNDRV_INFO_CONTENT_DATA;
1221                 entry->private_data = chip->mgr;
1222                 entry->c.ops = &snd_mixart_proc_ops_BA1;
1223                 entry->size = MIXART_BA1_SIZE;
1224         }
1225 }
1226 /* end of proc interface */
1227
1228
1229 /*
1230  *    probe function - creates the card manager
1231  */
1232 static int snd_mixart_probe(struct pci_dev *pci,
1233                             const struct pci_device_id *pci_id)
1234 {
1235         static int dev;
1236         struct mixart_mgr *mgr;
1237         unsigned int i;
1238         int err;
1239         size_t size;
1240
1241         /*
1242          */
1243         if (dev >= SNDRV_CARDS)
1244                 return -ENODEV;
1245         if (! enable[dev]) {
1246                 dev++;
1247                 return -ENOENT;
1248         }
1249
1250         /* enable PCI device */
1251         if ((err = pci_enable_device(pci)) < 0)
1252                 return err;
1253         pci_set_master(pci);
1254
1255         /* check if we can restrict PCI DMA transfers to 32 bits */
1256         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) {
1257                 dev_err(&pci->dev,
1258                         "architecture does not support 32bit PCI busmaster DMA\n");
1259                 pci_disable_device(pci);
1260                 return -ENXIO;
1261         }
1262
1263         /*
1264          */
1265         mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1266         if (! mgr) {
1267                 pci_disable_device(pci);
1268                 return -ENOMEM;
1269         }
1270
1271         mgr->pci = pci;
1272         mgr->irq = -1;
1273
1274         /* resource assignment */
1275         if ((err = pci_request_regions(pci, CARD_NAME)) < 0) {
1276                 kfree(mgr);
1277                 pci_disable_device(pci);
1278                 return err;
1279         }
1280         for (i = 0; i < 2; i++) {
1281                 mgr->mem[i].phys = pci_resource_start(pci, i);
1282                 mgr->mem[i].virt = pci_ioremap_bar(pci, i);
1283                 if (!mgr->mem[i].virt) {
1284                         dev_err(&pci->dev, "unable to remap resource 0x%lx\n",
1285                                mgr->mem[i].phys);
1286                         snd_mixart_free(mgr);
1287                         return -EBUSY;
1288                 }
1289         }
1290
1291         if (request_threaded_irq(pci->irq, snd_mixart_interrupt,
1292                                  snd_mixart_threaded_irq, IRQF_SHARED,
1293                                  KBUILD_MODNAME, mgr)) {
1294                 dev_err(&pci->dev, "unable to grab IRQ %d\n", pci->irq);
1295                 snd_mixart_free(mgr);
1296                 return -EBUSY;
1297         }
1298         mgr->irq = pci->irq;
1299
1300         /* init mailbox  */
1301         mgr->msg_fifo_readptr = 0;
1302         mgr->msg_fifo_writeptr = 0;
1303
1304         mutex_init(&mgr->lock);
1305         mutex_init(&mgr->msg_lock);
1306         init_waitqueue_head(&mgr->msg_sleep);
1307         atomic_set(&mgr->msg_processed, 0);
1308
1309         /* init setup mutex*/
1310         mutex_init(&mgr->setup_mutex);
1311
1312         /* card assignment */
1313         mgr->num_cards = MIXART_MAX_CARDS; /* 4  FIXME: configurable? */
1314         for (i = 0; i < mgr->num_cards; i++) {
1315                 struct snd_card *card;
1316                 char tmpid[16];
1317                 int idx;
1318
1319                 if (index[dev] < 0)
1320                         idx = index[dev];
1321                 else
1322                         idx = index[dev] + i;
1323                 snprintf(tmpid, sizeof(tmpid), "%s-%d", id[dev] ? id[dev] : "MIXART", i);
1324                 err = snd_card_new(&pci->dev, idx, tmpid, THIS_MODULE,
1325                                    0, &card);
1326
1327                 if (err < 0) {
1328                         dev_err(&pci->dev, "cannot allocate the card %d\n", i);
1329                         snd_mixart_free(mgr);
1330                         return err;
1331                 }
1332
1333                 strcpy(card->driver, CARD_NAME);
1334                 snprintf(card->shortname, sizeof(card->shortname),
1335                          "Digigram miXart [PCM #%d]", i);
1336                 snprintf(card->longname, sizeof(card->longname),
1337                         "Digigram miXart at 0x%lx & 0x%lx, irq %i [PCM #%d]",
1338                         mgr->mem[0].phys, mgr->mem[1].phys, mgr->irq, i);
1339
1340                 if ((err = snd_mixart_create(mgr, card, i)) < 0) {
1341                         snd_card_free(card);
1342                         snd_mixart_free(mgr);
1343                         return err;
1344                 }
1345
1346                 if(i==0) {
1347                         /* init proc interface only for chip0 */
1348                         snd_mixart_proc_init(mgr->chip[i]);
1349                 }
1350
1351                 if ((err = snd_card_register(card)) < 0) {
1352                         snd_mixart_free(mgr);
1353                         return err;
1354                 }
1355         }
1356
1357         /* init firmware status (mgr->dsp_loaded reset in hwdep_new) */
1358         mgr->board_type = MIXART_DAUGHTER_TYPE_NONE;
1359
1360         /* create array of streaminfo */
1361         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1362                             sizeof(struct mixart_flowinfo)) );
1363         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1364                                 size, &mgr->flowinfo) < 0) {
1365                 snd_mixart_free(mgr);
1366                 return -ENOMEM;
1367         }
1368         /* init streaminfo_array */
1369         memset(mgr->flowinfo.area, 0, size);
1370
1371         /* create array of bufferinfo */
1372         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1373                             sizeof(struct mixart_bufferinfo)) );
1374         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1375                                 size, &mgr->bufferinfo) < 0) {
1376                 snd_mixart_free(mgr);
1377                 return -ENOMEM;
1378         }
1379         /* init bufferinfo_array */
1380         memset(mgr->bufferinfo.area, 0, size);
1381
1382         /* set up firmware */
1383         err = snd_mixart_setup_firmware(mgr);
1384         if (err < 0) {
1385                 snd_mixart_free(mgr);
1386                 return err;
1387         }
1388
1389         pci_set_drvdata(pci, mgr);
1390         dev++;
1391         return 0;
1392 }
1393
1394 static void snd_mixart_remove(struct pci_dev *pci)
1395 {
1396         snd_mixart_free(pci_get_drvdata(pci));
1397 }
1398
1399 static struct pci_driver mixart_driver = {
1400         .name = KBUILD_MODNAME,
1401         .id_table = snd_mixart_ids,
1402         .probe = snd_mixart_probe,
1403         .remove = snd_mixart_remove,
1404 };
1405
1406 module_pci_driver(mixart_driver);