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
  36 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;             /* Index 0-MAX */
  37 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;              /* ID for this card */
  38 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
  39
  40 module_param_array(index, int, NULL, 0444);
  41 MODULE_PARM_DESC(index, "Index value for Digigram " CARD_NAME " soundcard.");
  42 module_param_array(id, charp, NULL, 0444);
  43 MODULE_PARM_DESC(id, "ID string for Digigram " CARD_NAME " soundcard.");
  44 module_param_array(enable, bool, NULL, 0444);
  45 MODULE_PARM_DESC(enable, "Enable Digigram " CARD_NAME " soundcard.");
  46
  47 /*
  48  */
  49
  50 static const struct pci_device_id snd_mixart_ids[] = {
  51         { PCI_VDEVICE(MOTOROLA, 0x0003), 0, }, /* MC8240 */
  52         { 0, }
  53 };
  54
  55 MODULE_DEVICE_TABLE(pci, snd_mixart_ids);
  56
  57
  58 static int mixart_set_pipe_state(struct mixart_mgr *mgr,
  59                                  struct mixart_pipe *pipe, int start)
  60 {
  61         struct mixart_group_state_req group_state;
  62         struct mixart_group_state_resp group_state_resp;
  63         struct mixart_msg request;
  64         int err;
  65         u32 system_msg_uid;
  66
  67         switch(pipe->status) {
  68         case PIPE_RUNNING:
  69         case PIPE_CLOCK_SET:
  70                 if(start) return 0; /* already started */
  71                 break;
  72         case PIPE_STOPPED:
  73                 if(!start) return 0; /* already stopped */
  74                 break;
  75         default:
  76                 dev_err(&mgr->pci->dev,
  77                         "error mixart_set_pipe_state called with wrong pipe->status!\n");
  78                 return -EINVAL;      /* function called with wrong pipe status */
  79         }
  80
  81         system_msg_uid = 0x12345678; /* the event ! (take care: the MSB and two LSB's have to be 0) */
  82
  83         /* wait on the last MSG_SYSTEM_SEND_SYNCHRO_CMD command to be really finished */
  84
  85         request.message_id = MSG_SYSTEM_WAIT_SYNCHRO_CMD;
  86         request.uid = (struct mixart_uid){0,0};
  87         request.data = &system_msg_uid;
  88         request.size = sizeof(system_msg_uid);
  89
  90         err = snd_mixart_send_msg_wait_notif(mgr, &request, system_msg_uid);
  91         if(err) {
  92                 dev_err(&mgr->pci->dev,
  93                         "error : MSG_SYSTEM_WAIT_SYNCHRO_CMD was not notified !\n");
  94                 return err;
  95         }
  96
  97         /* start or stop the pipe (1 pipe) */
  98
  99         memset(&group_state, 0, sizeof(group_state));
 100         group_state.pipe_count = 1;
 101         group_state.pipe_uid[0] = pipe->group_uid;
 102
 103         if(start)
 104                 request.message_id = MSG_STREAM_START_STREAM_GRP_PACKET;
 105         else
 106                 request.message_id = MSG_STREAM_STOP_STREAM_GRP_PACKET;
 107
 108         request.uid = pipe->group_uid; /*(struct mixart_uid){0,0};*/
 109         request.data = &group_state;
 110         request.size = sizeof(group_state);
 111
 112         err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
 113         if (err < 0 || group_state_resp.txx_status != 0) {
 114                 dev_err(&mgr->pci->dev,
 115                         "error MSG_STREAM_ST***_STREAM_GRP_PACKET err=%x stat=%x !\n",
 116                         err, group_state_resp.txx_status);
 117                 return -EINVAL;
 118         }
 119
 120         if(start) {
 121                 u32 stat = 0;
 122
 123                 group_state.pipe_count = 0; /* in case of start same command once again with pipe_count=0 */
 124
 125                 err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
 126                 if (err < 0 || group_state_resp.txx_status != 0) {
 127                         dev_err(&mgr->pci->dev,
 128                                 "error MSG_STREAM_START_STREAM_GRP_PACKET err=%x stat=%x !\n",
 129                                 err, group_state_resp.txx_status);
 130                         return -EINVAL;
 131                 }
 132
 133                 /* in case of start send a synchro top */
 134
 135                 request.message_id = MSG_SYSTEM_SEND_SYNCHRO_CMD;
 136                 request.uid = (struct mixart_uid){0,0};
 137                 request.data = NULL;
 138                 request.size = 0;
 139
 140                 err = snd_mixart_send_msg(mgr, &request, sizeof(stat), &stat);
 141                 if (err < 0 || stat != 0) {
 142                         dev_err(&mgr->pci->dev,
 143                                 "error MSG_SYSTEM_SEND_SYNCHRO_CMD err=%x stat=%x !\n",
 144                                 err, stat);
 145                         return -EINVAL;
 146                 }
 147
 148                 pipe->status = PIPE_RUNNING;
 149         }
 150         else /* !start */
 151                 pipe->status = PIPE_STOPPED;
 152
 153         return 0;
 154 }
 155
 156
 157 static int mixart_set_clock(struct mixart_mgr *mgr,
 158                             struct mixart_pipe *pipe, unsigned int rate)
 159 {
 160         struct mixart_msg request;
 161         struct mixart_clock_properties clock_properties;
 162         struct mixart_clock_properties_resp clock_prop_resp;
 163         int err;
 164
 165         switch(pipe->status) {
 166         case PIPE_CLOCK_SET:
 167                 break;
 168         case PIPE_RUNNING:
 169                 if(rate != 0)
 170                         break;
 171                 fallthrough;
 172         default:
 173                 if(rate == 0)
 174                         return 0; /* nothing to do */
 175                 else {
 176                         dev_err(&mgr->pci->dev,
 177                                 "error mixart_set_clock(%d) called with wrong pipe->status !\n",
 178                                 rate);
 179                         return -EINVAL;
 180                 }
 181         }
 182
 183         memset(&clock_properties, 0, sizeof(clock_properties));
 184         clock_properties.clock_generic_type = (rate != 0) ? CGT_INTERNAL_CLOCK : CGT_NO_CLOCK;
 185         clock_properties.clock_mode = CM_STANDALONE;
 186         clock_properties.frequency = rate;
 187         clock_properties.nb_callers = 1; /* only one entry in uid_caller ! */
 188         clock_properties.uid_caller[0] = pipe->group_uid;
 189
 190         dev_dbg(&mgr->pci->dev, "mixart_set_clock to %d kHz\n", rate);
 191
 192         request.message_id = MSG_CLOCK_SET_PROPERTIES;
 193         request.uid = mgr->uid_console_manager;
 194         request.data = &clock_properties;
 195         request.size = sizeof(clock_properties);
 196
 197         err = snd_mixart_send_msg(mgr, &request, sizeof(clock_prop_resp), &clock_prop_resp);
 198         if (err < 0 || clock_prop_resp.status != 0 || clock_prop_resp.clock_mode != CM_STANDALONE) {
 199                 dev_err(&mgr->pci->dev,
 200                         "error MSG_CLOCK_SET_PROPERTIES err=%x stat=%x mod=%x !\n",
 201                         err, clock_prop_resp.status, clock_prop_resp.clock_mode);
 202                 return -EINVAL;
 203         }
 204
 205         if(rate)  pipe->status = PIPE_CLOCK_SET;
 206         else      pipe->status = PIPE_RUNNING;
 207
 208         return 0;
 209 }
 210
 211
 212 /*
 213  *  Allocate or reference output pipe for analog IOs (pcmp0/1)
 214  */
 215 struct mixart_pipe *
 216 snd_mixart_add_ref_pipe(struct snd_mixart *chip, int pcm_number, int capture,
 217                         int monitoring)
 218 {
 219         int stream_count;
 220         struct mixart_pipe *pipe;
 221         struct mixart_msg request;
 222
 223         if(capture) {
 224                 if (pcm_number == MIXART_PCM_ANALOG) {
 225                         pipe = &(chip->pipe_in_ana);  /* analog inputs */
 226                 } else {
 227                         pipe = &(chip->pipe_in_dig); /* digital inputs */
 228                 }
 229                 request.message_id = MSG_STREAM_ADD_OUTPUT_GROUP;
 230                 stream_count = MIXART_CAPTURE_STREAMS;
 231         } else {
 232                 if (pcm_number == MIXART_PCM_ANALOG) {
 233                         pipe = &(chip->pipe_out_ana);  /* analog outputs */
 234                 } else {
 235                         pipe = &(chip->pipe_out_dig);  /* digital outputs */
 236                 }
 237                 request.message_id = MSG_STREAM_ADD_INPUT_GROUP;
 238                 stream_count = MIXART_PLAYBACK_STREAMS;
 239         }
 240
 241         /* a new stream is opened and there are already all streams in use */
 242         if( (monitoring == 0) && (pipe->references >= stream_count) ) {
 243                 return NULL;
 244         }
 245
 246         /* pipe is not yet defined */
 247         if( pipe->status == PIPE_UNDEFINED ) {
 248                 int err, i;
 249                 struct {
 250                         struct mixart_streaming_group_req sgroup_req;
 251                         struct mixart_streaming_group sgroup_resp;
 252                 } *buf;
 253
 254                 dev_dbg(chip->card->dev,
 255                         "add_ref_pipe audio chip(%d) pcm(%d)\n",
 256                         chip->chip_idx, pcm_number);
 257
 258                 buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 259                 if (!buf)
 260                         return NULL;
 261
 262                 request.uid = (struct mixart_uid){0,0};      /* should be StreamManagerUID, but zero is OK if there is only one ! */
 263                 request.data = &buf->sgroup_req;
 264                 request.size = sizeof(buf->sgroup_req);
 265
 266                 memset(&buf->sgroup_req, 0, sizeof(buf->sgroup_req));
 267
 268                 buf->sgroup_req.stream_count = stream_count;
 269                 buf->sgroup_req.channel_count = 2;
 270                 buf->sgroup_req.latency = 256;
 271                 buf->sgroup_req.connector = pipe->uid_left_connector;  /* the left connector */
 272
 273                 for (i=0; i<stream_count; i++) {
 274                         int j;
 275                         struct mixart_flowinfo *flowinfo;
 276                         struct mixart_bufferinfo *bufferinfo;
 277
 278                         /* we don't yet know the format, so config 16 bit pcm audio for instance */
 279                         buf->sgroup_req.stream_info[i].size_max_byte_frame = 1024;
 280                         buf->sgroup_req.stream_info[i].size_max_sample_frame = 256;
 281                         buf->sgroup_req.stream_info[i].nb_bytes_max_per_sample = MIXART_FLOAT_P__4_0_TO_HEX; /* is 4.0f */
 282
 283                         /* find the right bufferinfo_array */
 284                         j = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (pcm_number * (MIXART_PLAYBACK_STREAMS + MIXART_CAPTURE_STREAMS)) + i;
 285                         if(capture) j += MIXART_PLAYBACK_STREAMS; /* in the array capture is behind playback */
 286
 287                         buf->sgroup_req.flow_entry[i] = j;
 288
 289                         flowinfo = (struct mixart_flowinfo *)chip->mgr->flowinfo.area;
 290                         flowinfo[j].bufferinfo_array_phy_address = (u32)chip->mgr->bufferinfo.addr + (j * sizeof(struct mixart_bufferinfo));
 291                         flowinfo[j].bufferinfo_count = 1;               /* 1 will set the miXart to ring-buffer mode ! */
 292
 293                         bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
 294                         bufferinfo[j].buffer_address = 0;               /* buffer is not yet allocated */
 295                         bufferinfo[j].available_length = 0;             /* buffer is not yet allocated */
 296
 297                         /* construct the identifier of the stream buffer received in the interrupts ! */
 298                         bufferinfo[j].buffer_id = (chip->chip_idx << MIXART_NOTIFY_CARD_OFFSET) + (pcm_number << MIXART_NOTIFY_PCM_OFFSET ) + i;
 299                         if(capture) {
 300                                 bufferinfo[j].buffer_id |= MIXART_NOTIFY_CAPT_MASK;
 301                         }
 302                 }
 303
 304                 err = snd_mixart_send_msg(chip->mgr, &request, sizeof(buf->sgroup_resp), &buf->sgroup_resp);
 305                 if((err < 0) || (buf->sgroup_resp.status != 0)) {
 306                         dev_err(chip->card->dev,
 307                                 "error MSG_STREAM_ADD_**PUT_GROUP err=%x stat=%x !\n",
 308                                 err, buf->sgroup_resp.status);
 309                         kfree(buf);
 310                         return NULL;
 311                 }
 312
 313                 pipe->group_uid = buf->sgroup_resp.group;     /* id of the pipe, as returned by embedded */
 314                 pipe->stream_count = buf->sgroup_resp.stream_count;
 315                 /* pipe->stream_uid[i] = buf->sgroup_resp.stream[i].stream_uid; */
 316
 317                 pipe->status = PIPE_STOPPED;
 318                 kfree(buf);
 319         }
 320
 321         if(monitoring)  pipe->monitoring = 1;
 322         else            pipe->references++;
 323
 324         return pipe;
 325 }
 326
 327
 328 int snd_mixart_kill_ref_pipe(struct mixart_mgr *mgr,
 329                              struct mixart_pipe *pipe, int monitoring)
 330 {
 331         int err = 0;
 332
 333         if(pipe->status == PIPE_UNDEFINED)
 334                 return 0;
 335
 336         if(monitoring)
 337                 pipe->monitoring = 0;
 338         else
 339                 pipe->references--;
 340
 341         if((pipe->references <= 0) && (pipe->monitoring == 0)) {
 342
 343                 struct mixart_msg request;
 344                 struct mixart_delete_group_resp delete_resp;
 345
 346                 /* release the clock */
 347                 err = mixart_set_clock( mgr, pipe, 0);
 348                 if( err < 0 ) {
 349                         dev_err(&mgr->pci->dev,
 350                                 "mixart_set_clock(0) return error!\n");
 351                 }
 352
 353                 /* stop the pipe */
 354                 err = mixart_set_pipe_state(mgr, pipe, 0);
 355                 if( err < 0 ) {
 356                         dev_err(&mgr->pci->dev, "error stopping pipe!\n");
 357                 }
 358
 359                 request.message_id = MSG_STREAM_DELETE_GROUP;
 360                 request.uid = (struct mixart_uid){0,0};
 361                 request.data = &pipe->group_uid;            /* the streaming group ! */
 362                 request.size = sizeof(pipe->group_uid);
 363
 364                 /* delete the pipe */
 365                 err = snd_mixart_send_msg(mgr, &request, sizeof(delete_resp), &delete_resp);
 366                 if ((err < 0) || (delete_resp.status != 0)) {
 367                         dev_err(&mgr->pci->dev,
 368                                 "error MSG_STREAM_DELETE_GROUP err(%x), status(%x)\n",
 369                                 err, delete_resp.status);
 370                 }
 371
 372                 pipe->group_uid = (struct mixart_uid){0,0};
 373                 pipe->stream_count = 0;
 374                 pipe->status = PIPE_UNDEFINED;
 375         }
 376
 377         return err;
 378 }
 379
 380 static int mixart_set_stream_state(struct mixart_stream *stream, int start)
 381 {
 382         struct snd_mixart *chip;
 383         struct mixart_stream_state_req stream_state_req;
 384         struct mixart_msg request;
 385
 386         if(!stream->substream)
 387                 return -EINVAL;
 388
 389         memset(&stream_state_req, 0, sizeof(stream_state_req));
 390         stream_state_req.stream_count = 1;
 391         stream_state_req.stream_info.stream_desc.uid_pipe = stream->pipe->group_uid;
 392         stream_state_req.stream_info.stream_desc.stream_idx = stream->substream->number;
 393
 394         if (stream->substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 395                 request.message_id = start ? MSG_STREAM_START_INPUT_STAGE_PACKET : MSG_STREAM_STOP_INPUT_STAGE_PACKET;
 396         else
 397                 request.message_id = start ? MSG_STREAM_START_OUTPUT_STAGE_PACKET : MSG_STREAM_STOP_OUTPUT_STAGE_PACKET;
 398
 399         request.uid = (struct mixart_uid){0,0};
 400         request.data = &stream_state_req;
 401         request.size = sizeof(stream_state_req);
 402
 403         stream->abs_period_elapsed = 0;            /* reset stream pos      */
 404         stream->buf_periods = 0;
 405         stream->buf_period_frag = 0;
 406
 407         chip = snd_pcm_substream_chip(stream->substream);
 408
 409         return snd_mixart_send_msg_nonblock(chip->mgr, &request);
 410 }
 411
 412 /*
 413  *  Trigger callback
 414  */
 415
 416 static int snd_mixart_trigger(struct snd_pcm_substream *subs, int cmd)
 417 {
 418         struct mixart_stream *stream = subs->runtime->private_data;
 419
 420         switch (cmd) {
 421         case SNDRV_PCM_TRIGGER_START:
 422
 423                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_START\n");
 424
 425                 /* START_STREAM */
 426                 if( mixart_set_stream_state(stream, 1) )
 427                         return -EINVAL;
 428
 429                 stream->status = MIXART_STREAM_STATUS_RUNNING;
 430
 431                 break;
 432         case SNDRV_PCM_TRIGGER_STOP:
 433
 434                 /* STOP_STREAM */
 435                 if( mixart_set_stream_state(stream, 0) )
 436                         return -EINVAL;
 437
 438                 stream->status = MIXART_STREAM_STATUS_OPEN;
 439
 440                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_STOP\n");
 441
 442                 break;
 443
 444         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 445                 /* TODO */
 446                 stream->status = MIXART_STREAM_STATUS_PAUSE;
 447                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_PUSH\n");
 448                 break;
 449         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 450                 /* TODO */
 451                 stream->status = MIXART_STREAM_STATUS_RUNNING;
 452                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_RELEASE\n");
 453                 break;
 454         default:
 455                 return -EINVAL;
 456         }
 457         return 0;
 458 }
 459
 460 static int mixart_sync_nonblock_events(struct mixart_mgr *mgr)
 461 {
 462         unsigned long timeout = jiffies + HZ;
 463         while (atomic_read(&mgr->msg_processed) > 0) {
 464                 if (time_after(jiffies, timeout)) {
 465                         dev_err(&mgr->pci->dev,
 466                                 "mixart: cannot process nonblock events!\n");
 467                         return -EBUSY;
 468                 }
 469                 schedule_timeout_uninterruptible(1);
 470         }
 471         return 0;
 472 }
 473
 474 /*
 475  *  prepare callback for all pcms
 476  */
 477 static int snd_mixart_prepare(struct snd_pcm_substream *subs)
 478 {
 479         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 480         struct mixart_stream *stream = subs->runtime->private_data;
 481
 482         /* TODO de façon non bloquante, réappliquer les hw_params (rate, bits, codec) */
 483
 484         dev_dbg(chip->card->dev, "snd_mixart_prepare\n");
 485
 486         mixart_sync_nonblock_events(chip->mgr);
 487
 488         /* only the first stream can choose the sample rate */
 489         /* the further opened streams will be limited to its frequency (see open) */
 490         if(chip->mgr->ref_count_rate == 1)
 491                 chip->mgr->sample_rate = subs->runtime->rate;
 492
 493         /* set the clock only once (first stream) on the same pipe */
 494         if(stream->pipe->references == 1) {
 495                 if( mixart_set_clock(chip->mgr, stream->pipe, subs->runtime->rate) )
 496                         return -EINVAL;
 497         }
 498
 499         return 0;
 500 }
 501
 502
 503 static int mixart_set_format(struct mixart_stream *stream, snd_pcm_format_t format)
 504 {
 505         int err;
 506         struct snd_mixart *chip;
 507         struct mixart_msg request;
 508         struct mixart_stream_param_desc stream_param;
 509         struct mixart_return_uid resp;
 510
 511         chip = snd_pcm_substream_chip(stream->substream);
 512
 513         memset(&stream_param, 0, sizeof(stream_param));
 514
 515         stream_param.coding_type = CT_LINEAR;
 516         stream_param.number_of_channel = stream->channels;
 517
 518         stream_param.sampling_freq = chip->mgr->sample_rate;
 519         if(stream_param.sampling_freq == 0)
 520                 stream_param.sampling_freq = 44100; /* if frequency not yet defined, use some default */
 521
 522         switch(format){
 523         case SNDRV_PCM_FORMAT_U8:
 524                 stream_param.sample_type = ST_INTEGER_8;
 525                 stream_param.sample_size = 8;
 526                 break;
 527         case SNDRV_PCM_FORMAT_S16_LE:
 528                 stream_param.sample_type = ST_INTEGER_16LE;
 529                 stream_param.sample_size = 16;
 530                 break;
 531         case SNDRV_PCM_FORMAT_S16_BE:
 532                 stream_param.sample_type = ST_INTEGER_16BE;
 533                 stream_param.sample_size = 16;
 534                 break;
 535         case SNDRV_PCM_FORMAT_S24_3LE:
 536                 stream_param.sample_type = ST_INTEGER_24LE;
 537                 stream_param.sample_size = 24;
 538                 break;
 539         case SNDRV_PCM_FORMAT_S24_3BE:
 540                 stream_param.sample_type = ST_INTEGER_24BE;
 541                 stream_param.sample_size = 24;
 542                 break;
 543         case SNDRV_PCM_FORMAT_FLOAT_LE:
 544                 stream_param.sample_type = ST_FLOATING_POINT_32LE;
 545                 stream_param.sample_size = 32;
 546                 break;
 547         case  SNDRV_PCM_FORMAT_FLOAT_BE:
 548                 stream_param.sample_type = ST_FLOATING_POINT_32BE;
 549                 stream_param.sample_size = 32;
 550                 break;
 551         default:
 552                 dev_err(chip->card->dev,
 553                         "error mixart_set_format() : unknown format\n");
 554                 return -EINVAL;
 555         }
 556
 557         dev_dbg(chip->card->dev,
 558                 "set SNDRV_PCM_FORMAT sample_type(%d) sample_size(%d) freq(%d) channels(%d)\n",
 559                    stream_param.sample_type, stream_param.sample_size, stream_param.sampling_freq, stream->channels);
 560
 561         /* TODO: what else to configure ? */
 562         /* stream_param.samples_per_frame = 2; */
 563         /* stream_param.bytes_per_frame = 4; */
 564         /* stream_param.bytes_per_sample = 2; */
 565
 566         stream_param.pipe_count = 1;      /* set to 1 */
 567         stream_param.stream_count = 1;    /* set to 1 */
 568         stream_param.stream_desc[0].uid_pipe = stream->pipe->group_uid;
 569         stream_param.stream_desc[0].stream_idx = stream->substream->number;
 570
 571         request.message_id = MSG_STREAM_SET_INPUT_STAGE_PARAM;
 572         request.uid = (struct mixart_uid){0,0};
 573         request.data = &stream_param;
 574         request.size = sizeof(stream_param);
 575
 576         err = snd_mixart_send_msg(chip->mgr, &request, sizeof(resp), &resp);
 577         if((err < 0) || resp.error_code) {
 578                 dev_err(chip->card->dev,
 579                         "MSG_STREAM_SET_INPUT_STAGE_PARAM err=%x; resp=%x\n",
 580                         err, resp.error_code);
 581                 return -EINVAL;
 582         }
 583         return 0;
 584 }
 585
 586
 587 /*
 588  *  HW_PARAMS callback for all pcms
 589  */
 590 static int snd_mixart_hw_params(struct snd_pcm_substream *subs,
 591                                 struct snd_pcm_hw_params *hw)
 592 {
 593         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 594         struct mixart_mgr *mgr = chip->mgr;
 595         struct mixart_stream *stream = subs->runtime->private_data;
 596         snd_pcm_format_t format;
 597         int err;
 598         int channels;
 599
 600         /* set up channels */
 601         channels = params_channels(hw);
 602
 603         /*  set up format for the stream */
 604         format = params_format(hw);
 605
 606         mutex_lock(&mgr->setup_mutex);
 607
 608         /* update the stream levels */
 609         if( stream->pcm_number <= MIXART_PCM_DIGITAL ) {
 610                 int is_aes = stream->pcm_number > MIXART_PCM_ANALOG;
 611                 if( subs->stream == SNDRV_PCM_STREAM_PLAYBACK )
 612                         mixart_update_playback_stream_level(chip, is_aes, subs->number);
 613                 else
 614                         mixart_update_capture_stream_level( chip, is_aes);
 615         }
 616
 617         stream->channels = channels;
 618
 619         /* set the format to the board */
 620         err = mixart_set_format(stream, format);
 621         if(err < 0) {
 622                 mutex_unlock(&mgr->setup_mutex);
 623                 return err;
 624         }
 625
 626         if (subs->runtime->buffer_changed) {
 627                 struct mixart_bufferinfo *bufferinfo;
 628                 int i = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (stream->pcm_number * (MIXART_PLAYBACK_STREAMS+MIXART_CAPTURE_STREAMS)) + subs->number;
 629                 if( subs->stream == SNDRV_PCM_STREAM_CAPTURE ) {
 630                         i += MIXART_PLAYBACK_STREAMS; /* in array capture is behind playback */
 631                 }
 632
 633                 bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
 634                 bufferinfo[i].buffer_address = subs->runtime->dma_addr;
 635                 bufferinfo[i].available_length = subs->runtime->dma_bytes;
 636                 /* bufferinfo[i].buffer_id  is already defined */
 637
 638                 dev_dbg(chip->card->dev,
 639                         "snd_mixart_hw_params(pcm %d) : dma_addr(%x) dma_bytes(%x) subs-number(%d)\n",
 640                         i, bufferinfo[i].buffer_address,
 641                                 bufferinfo[i].available_length,
 642                                 subs->number);
 643         }
 644         mutex_unlock(&mgr->setup_mutex);
 645
 646         return 0;
 647 }
 648
 649 static int snd_mixart_hw_free(struct snd_pcm_substream *subs)
 650 {
 651         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 652         mixart_sync_nonblock_events(chip->mgr);
 653         return 0;
 654 }
 655
 656
 657
 658 /*
 659  *  TODO CONFIGURATION SPACE for all pcms, mono pcm must update channels_max
 660  */
 661 static const struct snd_pcm_hardware snd_mixart_analog_caps =
 662 {
 663         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 664                               SNDRV_PCM_INFO_MMAP_VALID |
 665                               SNDRV_PCM_INFO_PAUSE),
 666         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
 667                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
 668                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
 669                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
 670         .rates            = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 671         .rate_min         = 8000,
 672         .rate_max         = 48000,
 673         .channels_min     = 1,
 674         .channels_max     = 2,
 675         .buffer_bytes_max = (32*1024),
 676         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
 677         .period_bytes_max = (16*1024),
 678         .periods_min      = 2,
 679         .periods_max      = (32*1024/256),
 680 };
 681
 682 static const struct snd_pcm_hardware snd_mixart_digital_caps =
 683 {
 684         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 685                               SNDRV_PCM_INFO_MMAP_VALID |
 686                               SNDRV_PCM_INFO_PAUSE),
 687         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
 688                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
 689                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
 690                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
 691         .rates            = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
 692         .rate_min         = 32000,
 693         .rate_max         = 48000,
 694         .channels_min     = 1,
 695         .channels_max     = 2,
 696         .buffer_bytes_max = (32*1024),
 697         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
 698         .period_bytes_max = (16*1024),
 699         .periods_min      = 2,
 700         .periods_max      = (32*1024/256),
 701 };
 702
 703
 704 static int snd_mixart_playback_open(struct snd_pcm_substream *subs)
 705 {
 706         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
 707         struct mixart_mgr        *mgr = chip->mgr;
 708         struct snd_pcm_runtime *runtime = subs->runtime;
 709         struct snd_pcm *pcm = subs->pcm;
 710         struct mixart_stream     *stream;
 711         struct mixart_pipe       *pipe;
 712         int err = 0;
 713         int pcm_number;
 714
 715         mutex_lock(&mgr->setup_mutex);
 716
 717         if ( pcm == chip->pcm ) {
 718                 pcm_number = MIXART_PCM_ANALOG;
 719                 runtime->hw = snd_mixart_analog_caps;
 720         } else {
 721                 snd_BUG_ON(pcm != chip->pcm_dig);
 722                 pcm_number = MIXART_PCM_DIGITAL;
 723                 runtime->hw = snd_mixart_digital_caps;
 724         }
 725         dev_dbg(chip->card->dev,
 726                 "snd_mixart_playback_open C%d/P%d/Sub%d\n",
 727                 chip->chip_idx, pcm_number, subs->number);
 728
 729         /* get stream info */
 730         stream = &(chip->playback_stream[pcm_number][subs->number]);
 731
 732         if (stream->status != MIXART_STREAM_STATUS_FREE){
 733                 /* streams in use */
 734                 dev_err(chip->card->dev,
 735                         "snd_mixart_playback_open C%d/P%d/Sub%d in use\n",
 736                         chip->chip_idx, pcm_number, subs->number);
 737                 err = -EBUSY;
 738                 goto _exit_open;
 739         }
 740
 741         /* get pipe pointer (out pipe) */
 742         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 0, 0);
 743
 744         if (pipe == NULL) {
 745                 err = -EINVAL;
 746                 goto _exit_open;
 747         }
 748
 749         /* start the pipe if necessary */
 750         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
 751         if( err < 0 ) {
 752                 dev_err(chip->card->dev, "error starting pipe!\n");
 753                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
 754                 err = -EINVAL;
 755                 goto _exit_open;
 756         }
 757
 758         stream->pipe        = pipe;
 759         stream->pcm_number  = pcm_number;
 760         stream->status      = MIXART_STREAM_STATUS_OPEN;
 761         stream->substream   = subs;
 762         stream->channels    = 0; /* not configured yet */
 763
 764         runtime->private_data = stream;
 765
 766         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 767         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
 768
 769         /* if a sample rate is already used, another stream cannot change */
 770         if(mgr->ref_count_rate++) {
 771                 if(mgr->sample_rate) {
 772                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
 773                 }
 774         }
 775
 776  _exit_open:
 777         mutex_unlock(&mgr->setup_mutex);
 778
 779         return err;
 780 }
 781
 782
 783 static int snd_mixart_capture_open(struct snd_pcm_substream *subs)
 784 {
 785         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
 786         struct mixart_mgr        *mgr = chip->mgr;
 787         struct snd_pcm_runtime *runtime = subs->runtime;
 788         struct snd_pcm *pcm = subs->pcm;
 789         struct mixart_stream     *stream;
 790         struct mixart_pipe       *pipe;
 791         int err = 0;
 792         int pcm_number;
 793
 794         mutex_lock(&mgr->setup_mutex);
 795
 796         if ( pcm == chip->pcm ) {
 797                 pcm_number = MIXART_PCM_ANALOG;
 798                 runtime->hw = snd_mixart_analog_caps;
 799         } else {
 800                 snd_BUG_ON(pcm != chip->pcm_dig);
 801                 pcm_number = MIXART_PCM_DIGITAL;
 802                 runtime->hw = snd_mixart_digital_caps;
 803         }
 804
 805         runtime->hw.channels_min = 2; /* for instance, no mono */
 806
 807         dev_dbg(chip->card->dev, "snd_mixart_capture_open C%d/P%d/Sub%d\n",
 808                 chip->chip_idx, pcm_number, subs->number);
 809
 810         /* get stream info */
 811         stream = &(chip->capture_stream[pcm_number]);
 812
 813         if (stream->status != MIXART_STREAM_STATUS_FREE){
 814                 /* streams in use */
 815                 dev_err(chip->card->dev,
 816                         "snd_mixart_capture_open C%d/P%d/Sub%d in use\n",
 817                         chip->chip_idx, pcm_number, subs->number);
 818                 err = -EBUSY;
 819                 goto _exit_open;
 820         }
 821
 822         /* get pipe pointer (in pipe) */
 823         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 1, 0);
 824
 825         if (pipe == NULL) {
 826                 err = -EINVAL;
 827                 goto _exit_open;
 828         }
 829
 830         /* start the pipe if necessary */
 831         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
 832         if( err < 0 ) {
 833                 dev_err(chip->card->dev, "error starting pipe!\n");
 834                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
 835                 err = -EINVAL;
 836                 goto _exit_open;
 837         }
 838
 839         stream->pipe        = pipe;
 840         stream->pcm_number  = pcm_number;
 841         stream->status      = MIXART_STREAM_STATUS_OPEN;
 842         stream->substream   = subs;
 843         stream->channels    = 0; /* not configured yet */
 844
 845         runtime->private_data = stream;
 846
 847         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 848         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
 849
 850         /* if a sample rate is already used, another stream cannot change */
 851         if(mgr->ref_count_rate++) {
 852                 if(mgr->sample_rate) {
 853                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
 854                 }
 855         }
 856
 857  _exit_open:
 858         mutex_unlock(&mgr->setup_mutex);
 859
 860         return err;
 861 }
 862
 863
 864
 865 static int snd_mixart_close(struct snd_pcm_substream *subs)
 866 {
 867         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 868         struct mixart_mgr *mgr = chip->mgr;
 869         struct mixart_stream *stream = subs->runtime->private_data;
 870
 871         mutex_lock(&mgr->setup_mutex);
 872
 873         dev_dbg(chip->card->dev, "snd_mixart_close C%d/P%d/Sub%d\n",
 874                 chip->chip_idx, stream->pcm_number, subs->number);
 875
 876         /* sample rate released */
 877         if(--mgr->ref_count_rate == 0) {
 878                 mgr->sample_rate = 0;
 879         }
 880
 881         /* delete pipe */
 882         if (snd_mixart_kill_ref_pipe(mgr, stream->pipe, 0 ) < 0) {
 883
 884                 dev_err(chip->card->dev,
 885                         "error snd_mixart_kill_ref_pipe C%dP%d\n",
 886                         chip->chip_idx, stream->pcm_number);
 887         }
 888
 889         stream->pipe      = NULL;
 890         stream->status    = MIXART_STREAM_STATUS_FREE;
 891         stream->substream = NULL;
 892
 893         mutex_unlock(&mgr->setup_mutex);
 894         return 0;
 895 }
 896
 897
 898 static snd_pcm_uframes_t snd_mixart_stream_pointer(struct snd_pcm_substream *subs)
 899 {
 900         struct snd_pcm_runtime *runtime = subs->runtime;
 901         struct mixart_stream   *stream  = runtime->private_data;
 902
 903         return (snd_pcm_uframes_t)((stream->buf_periods * runtime->period_size) + stream->buf_period_frag);
 904 }
 905
 906
 907
 908 static const struct snd_pcm_ops snd_mixart_playback_ops = {
 909         .open      = snd_mixart_playback_open,
 910         .close     = snd_mixart_close,
 911         .prepare   = snd_mixart_prepare,
 912         .hw_params = snd_mixart_hw_params,
 913         .hw_free   = snd_mixart_hw_free,
 914         .trigger   = snd_mixart_trigger,
 915         .pointer   = snd_mixart_stream_pointer,
 916 };
 917
 918 static const struct snd_pcm_ops snd_mixart_capture_ops = {
 919         .open      = snd_mixart_capture_open,
 920         .close     = snd_mixart_close,
 921         .prepare   = snd_mixart_prepare,
 922         .hw_params = snd_mixart_hw_params,
 923         .hw_free   = snd_mixart_hw_free,
 924         .trigger   = snd_mixart_trigger,
 925         .pointer   = snd_mixart_stream_pointer,
 926 };
 927
 928 static void preallocate_buffers(struct snd_mixart *chip, struct snd_pcm *pcm)
 929 {
 930 #if 0
 931         struct snd_pcm_substream *subs;
 932         int stream;
 933
 934         for (stream = 0; stream < 2; stream++) {
 935                 int idx = 0;
 936                 for (subs = pcm->streams[stream].substream; subs; subs = subs->next, idx++)
 937                         /* set up the unique device id with the chip index */
 938                         subs->dma_device.id = subs->pcm->device << 16 |
 939                                 subs->stream << 8 | (subs->number + 1) |
 940                                 (chip->chip_idx + 1) << 24;
 941         }
 942 #endif
 943         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
 944                                        &chip->mgr->pci->dev,
 945                                        32*1024, 32*1024);
 946 }
 947
 948 /*
 949  */
 950 static int snd_mixart_pcm_analog(struct snd_mixart *chip)
 951 {
 952         int err;
 953         struct snd_pcm *pcm;
 954         char name[32];
 955
 956         sprintf(name, "miXart analog %d", chip->chip_idx);
 957         err = snd_pcm_new(chip->card, name, MIXART_PCM_ANALOG,
 958                           MIXART_PLAYBACK_STREAMS,
 959                           MIXART_CAPTURE_STREAMS, &pcm);
 960         if (err < 0) {
 961                 dev_err(chip->card->dev,
 962                         "cannot create the analog pcm %d\n", chip->chip_idx);
 963                 return err;
 964         }
 965
 966         pcm->private_data = chip;
 967
 968         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
 969         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
 970
 971         pcm->info_flags = 0;
 972         pcm->nonatomic = true;
 973         strcpy(pcm->name, name);
 974
 975         preallocate_buffers(chip, pcm);
 976
 977         chip->pcm = pcm;
 978         return 0;
 979 }
 980
 981
 982 /*
 983  */
 984 static int snd_mixart_pcm_digital(struct snd_mixart *chip)
 985 {
 986         int err;
 987         struct snd_pcm *pcm;
 988         char name[32];
 989
 990         sprintf(name, "miXart AES/EBU %d", chip->chip_idx);
 991         err = snd_pcm_new(chip->card, name, MIXART_PCM_DIGITAL,
 992                           MIXART_PLAYBACK_STREAMS,
 993                           MIXART_CAPTURE_STREAMS, &pcm);
 994         if (err < 0) {
 995                 dev_err(chip->card->dev,
 996                         "cannot create the digital pcm %d\n", chip->chip_idx);
 997                 return err;
 998         }
 999
1000         pcm->private_data = chip;
1001
1002         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
1003         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
1004
1005         pcm->info_flags = 0;
1006         pcm->nonatomic = true;
1007         strcpy(pcm->name, name);
1008
1009         preallocate_buffers(chip, pcm);
1010
1011         chip->pcm_dig = pcm;
1012         return 0;
1013 }
1014
1015 static int snd_mixart_chip_free(struct snd_mixart *chip)
1016 {
1017         kfree(chip);
1018         return 0;
1019 }
1020
1021 static int snd_mixart_chip_dev_free(struct snd_device *device)
1022 {
1023         struct snd_mixart *chip = device->device_data;
1024         return snd_mixart_chip_free(chip);
1025 }
1026
1027
1028 /*
1029  */
1030 static int snd_mixart_create(struct mixart_mgr *mgr, struct snd_card *card, int idx)
1031 {
1032         int err;
1033         struct snd_mixart *chip;
1034         static const struct snd_device_ops ops = {
1035                 .dev_free = snd_mixart_chip_dev_free,
1036         };
1037
1038         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1039         if (!chip)
1040                 return -ENOMEM;
1041
1042         chip->card = card;
1043         chip->chip_idx = idx;
1044         chip->mgr = mgr;
1045         card->sync_irq = mgr->irq;
1046
1047         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1048         if (err < 0) {
1049                 snd_mixart_chip_free(chip);
1050                 return err;
1051         }
1052
1053         mgr->chip[idx] = chip;
1054         return 0;
1055 }
1056
1057 int snd_mixart_create_pcm(struct snd_mixart* chip)
1058 {
1059         int err;
1060
1061         err = snd_mixart_pcm_analog(chip);
1062         if (err < 0)
1063                 return err;
1064
1065         if(chip->mgr->board_type == MIXART_DAUGHTER_TYPE_AES) {
1066
1067                 err = snd_mixart_pcm_digital(chip);
1068                 if (err < 0)
1069                         return err;
1070         }
1071         return err;
1072 }
1073
1074
1075 /*
1076  * release all the cards assigned to a manager instance
1077  */
1078 static int snd_mixart_free(struct mixart_mgr *mgr)
1079 {
1080         unsigned int i;
1081
1082         for (i = 0; i < mgr->num_cards; i++) {
1083                 if (mgr->chip[i])
1084                         snd_card_free(mgr->chip[i]->card);
1085         }
1086
1087         /* stop mailbox */
1088         snd_mixart_exit_mailbox(mgr);
1089
1090         /* release irq  */
1091         if (mgr->irq >= 0)
1092                 free_irq(mgr->irq, mgr);
1093
1094         /* reset board if some firmware was loaded */
1095         if(mgr->dsp_loaded) {
1096                 snd_mixart_reset_board(mgr);
1097                 dev_dbg(&mgr->pci->dev, "reset miXart !\n");
1098         }
1099
1100         /* release the i/o ports */
1101         for (i = 0; i < 2; ++i)
1102                 iounmap(mgr->mem[i].virt);
1103
1104         pci_release_regions(mgr->pci);
1105
1106         /* free flowarray */
1107         if(mgr->flowinfo.area) {
1108                 snd_dma_free_pages(&mgr->flowinfo);
1109                 mgr->flowinfo.area = NULL;
1110         }
1111         /* free bufferarray */
1112         if(mgr->bufferinfo.area) {
1113                 snd_dma_free_pages(&mgr->bufferinfo);
1114                 mgr->bufferinfo.area = NULL;
1115         }
1116
1117         pci_disable_device(mgr->pci);
1118         kfree(mgr);
1119         return 0;
1120 }
1121
1122 /*
1123  * proc interface
1124  */
1125
1126 /*
1127   mixart_BA0 proc interface for BAR 0 - read callback
1128  */
1129 static ssize_t snd_mixart_BA0_read(struct snd_info_entry *entry,
1130                                    void *file_private_data,
1131                                    struct file *file, char __user *buf,
1132                                    size_t count, loff_t pos)
1133 {
1134         struct mixart_mgr *mgr = entry->private_data;
1135
1136         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1137         if (copy_to_user_fromio(buf, MIXART_MEM(mgr, pos), count))
1138                 return -EFAULT;
1139         return count;
1140 }
1141
1142 /*
1143   mixart_BA1 proc interface for BAR 1 - read callback
1144  */
1145 static ssize_t snd_mixart_BA1_read(struct snd_info_entry *entry,
1146                                    void *file_private_data,
1147                                    struct file *file, char __user *buf,
1148                                    size_t count, loff_t pos)
1149 {
1150         struct mixart_mgr *mgr = entry->private_data;
1151
1152         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1153         if (copy_to_user_fromio(buf, MIXART_REG(mgr, pos), count))
1154                 return -EFAULT;
1155         return count;
1156 }
1157
1158 static const struct snd_info_entry_ops snd_mixart_proc_ops_BA0 = {
1159         .read   = snd_mixart_BA0_read,
1160 };
1161
1162 static const struct snd_info_entry_ops snd_mixart_proc_ops_BA1 = {
1163         .read   = snd_mixart_BA1_read,
1164 };
1165
1166
1167 static void snd_mixart_proc_read(struct snd_info_entry *entry,
1168                                  struct snd_info_buffer *buffer)
1169 {
1170         struct snd_mixart *chip = entry->private_data;
1171         u32 ref;
1172
1173         snd_iprintf(buffer, "Digigram miXart (alsa card %d)\n\n", chip->chip_idx);
1174
1175         /* stats available when embedded OS is running */
1176         if (chip->mgr->dsp_loaded & ( 1 << MIXART_MOTHERBOARD_ELF_INDEX)) {
1177                 snd_iprintf(buffer, "- hardware -\n");
1178                 switch (chip->mgr->board_type ) {
1179                 case MIXART_DAUGHTER_TYPE_NONE     : snd_iprintf(buffer, "\tmiXart8 (no daughter board)\n\n"); break;
1180                 case MIXART_DAUGHTER_TYPE_AES      : snd_iprintf(buffer, "\tmiXart8 AES/EBU\n\n"); break;
1181                 case MIXART_DAUGHTER_TYPE_COBRANET : snd_iprintf(buffer, "\tmiXart8 Cobranet\n\n"); break;
1182                 default:                             snd_iprintf(buffer, "\tUNKNOWN!\n\n"); break;
1183                 }
1184
1185                 snd_iprintf(buffer, "- system load -\n");
1186
1187                 /* get perf reference */
1188
1189                 ref = readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_SYSTEM_LOAD_OFFSET));
1190
1191                 if (ref) {
1192                         u32 mailbox   = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_MAILBX_LOAD_OFFSET)) / ref;
1193                         u32 streaming = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_STREAM_LOAD_OFFSET)) / ref;
1194                         u32 interr    = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_INTERR_LOAD_OFFSET)) / ref;
1195
1196                         snd_iprintf(buffer, "\tstreaming          : %d\n", streaming);
1197                         snd_iprintf(buffer, "\tmailbox            : %d\n", mailbox);
1198                         snd_iprintf(buffer, "\tinterrupts handling : %d\n\n", interr);
1199                 }
1200         } /* endif elf loaded */
1201 }
1202
1203 static void snd_mixart_proc_init(struct snd_mixart *chip)
1204 {
1205         struct snd_info_entry *entry;
1206
1207         /* text interface to read perf and temp meters */
1208         snd_card_ro_proc_new(chip->card, "board_info", chip,
1209                              snd_mixart_proc_read);
1210
1211         if (! snd_card_proc_new(chip->card, "mixart_BA0", &entry)) {
1212                 entry->content = SNDRV_INFO_CONTENT_DATA;
1213                 entry->private_data = chip->mgr;
1214                 entry->c.ops = &snd_mixart_proc_ops_BA0;
1215                 entry->size = MIXART_BA0_SIZE;
1216         }
1217         if (! snd_card_proc_new(chip->card, "mixart_BA1", &entry)) {
1218                 entry->content = SNDRV_INFO_CONTENT_DATA;
1219                 entry->private_data = chip->mgr;
1220                 entry->c.ops = &snd_mixart_proc_ops_BA1;
1221                 entry->size = MIXART_BA1_SIZE;
1222         }
1223 }
1224 /* end of proc interface */
1225
1226
1227 /*
1228  *    probe function - creates the card manager
1229  */
1230 static int snd_mixart_probe(struct pci_dev *pci,
1231                             const struct pci_device_id *pci_id)
1232 {
1233         static int dev;
1234         struct mixart_mgr *mgr;
1235         unsigned int i;
1236         int err;
1237         size_t size;
1238
1239         /*
1240          */
1241         if (dev >= SNDRV_CARDS)
1242                 return -ENODEV;
1243         if (! enable[dev]) {
1244                 dev++;
1245                 return -ENOENT;
1246         }
1247
1248         /* enable PCI device */
1249         err = pci_enable_device(pci);
1250         if (err < 0)
1251                 return err;
1252         pci_set_master(pci);
1253
1254         /* check if we can restrict PCI DMA transfers to 32 bits */
1255         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) {
1256                 dev_err(&pci->dev,
1257                         "architecture does not support 32bit PCI busmaster DMA\n");
1258                 pci_disable_device(pci);
1259                 return -ENXIO;
1260         }
1261
1262         /*
1263          */
1264         mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1265         if (! mgr) {
1266                 pci_disable_device(pci);
1267                 return -ENOMEM;
1268         }
1269
1270         mgr->pci = pci;
1271         mgr->irq = -1;
1272
1273         /* resource assignment */
1274         err = pci_request_regions(pci, CARD_NAME);
1275         if (err < 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                 err = snd_mixart_create(mgr, card, i);
1341                 if (err < 0) {
1342                         snd_card_free(card);
1343                         snd_mixart_free(mgr);
1344                         return err;
1345                 }
1346
1347                 if(i==0) {
1348                         /* init proc interface only for chip0 */
1349                         snd_mixart_proc_init(mgr->chip[i]);
1350                 }
1351
1352                 err = snd_card_register(card);
1353                 if (err < 0) {
1354                         snd_mixart_free(mgr);
1355                         return err;
1356                 }
1357         }
1358
1359         /* init firmware status (mgr->dsp_loaded reset in hwdep_new) */
1360         mgr->board_type = MIXART_DAUGHTER_TYPE_NONE;
1361
1362         /* create array of streaminfo */
1363         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1364                             sizeof(struct mixart_flowinfo)) );
1365         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &pci->dev,
1366                                 size, &mgr->flowinfo) < 0) {
1367                 snd_mixart_free(mgr);
1368                 return -ENOMEM;
1369         }
1370         /* init streaminfo_array */
1371         memset(mgr->flowinfo.area, 0, size);
1372
1373         /* create array of bufferinfo */
1374         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1375                             sizeof(struct mixart_bufferinfo)) );
1376         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &pci->dev,
1377                                 size, &mgr->bufferinfo) < 0) {
1378                 snd_mixart_free(mgr);
1379                 return -ENOMEM;
1380         }
1381         /* init bufferinfo_array */
1382         memset(mgr->bufferinfo.area, 0, size);
1383
1384         /* set up firmware */
1385         err = snd_mixart_setup_firmware(mgr);
1386         if (err < 0) {
1387                 snd_mixart_free(mgr);
1388                 return err;
1389         }
1390
1391         pci_set_drvdata(pci, mgr);
1392         dev++;
1393         return 0;
1394 }
1395
1396 static void snd_mixart_remove(struct pci_dev *pci)
1397 {
1398         snd_mixart_free(pci_get_drvdata(pci));
1399 }
1400
1401 static struct pci_driver mixart_driver = {
1402         .name = KBUILD_MODNAME,
1403         .id_table = snd_mixart_ids,
1404         .probe = snd_mixart_probe,
1405         .remove = snd_mixart_remove,
1406 };
1407
1408 module_pci_driver(mixart_driver);