sound/pci/mixart/mixart.c

   1 /*
   2  * Driver for Digigram miXart soundcards
   3  *
   4  * main file with alsa callbacks
   5  *
   6  * Copyright (c) 2003 by Digigram <alsa@digigram.com>
   7  *
   8  *   This program is free software; you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License as published by
  10  *   the Free Software Foundation; either version 2 of the License, or
  11  *   (at your option) any later version.
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program; if not, write to the Free Software
  20  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  */
  22
  23
  24 #include <linux/init.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/pci.h>
  27 #include <linux/dma-mapping.h>
  28 #include <linux/module.h>
  29 #include <linux/mutex.h>
  30 #include <linux/slab.h>
  31
  32 #include <sound/core.h>
  33 #include <sound/initval.h>
  34 #include <sound/info.h>
  35 #include <sound/control.h>
  36 #include <sound/pcm.h>
  37 #include <sound/pcm_params.h>
  38 #include "mixart.h"
  39 #include "mixart_hwdep.h"
  40 #include "mixart_core.h"
  41 #include "mixart_mixer.h"
  42
  43 #define CARD_NAME "miXart"
  44
  45 MODULE_AUTHOR("Digigram <alsa@digigram.com>");
  46 MODULE_DESCRIPTION("Digigram " CARD_NAME);
  47 MODULE_LICENSE("GPL");
  48 MODULE_SUPPORTED_DEVICE("{{Digigram," CARD_NAME "}}");
  49
  50 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;             /* Index 0-MAX */
  51 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;              /* ID for this card */
  52 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
  53
  54 module_param_array(index, int, NULL, 0444);
  55 MODULE_PARM_DESC(index, "Index value for Digigram " CARD_NAME " soundcard.");
  56 module_param_array(id, charp, NULL, 0444);
  57 MODULE_PARM_DESC(id, "ID string for Digigram " CARD_NAME " soundcard.");
  58 module_param_array(enable, bool, NULL, 0444);
  59 MODULE_PARM_DESC(enable, "Enable Digigram " CARD_NAME " soundcard.");
  60
  61 /*
  62  */
  63
  64 static const struct pci_device_id snd_mixart_ids[] = {
  65         { PCI_VDEVICE(MOTOROLA, 0x0003), 0, }, /* MC8240 */
  66         { 0, }
  67 };
  68
  69 MODULE_DEVICE_TABLE(pci, snd_mixart_ids);
  70
  71
  72 static int mixart_set_pipe_state(struct mixart_mgr *mgr,
  73                                  struct mixart_pipe *pipe, int start)
  74 {
  75         struct mixart_group_state_req group_state;
  76         struct mixart_group_state_resp group_state_resp;
  77         struct mixart_msg request;
  78         int err;
  79         u32 system_msg_uid;
  80
  81         switch(pipe->status) {
  82         case PIPE_RUNNING:
  83         case PIPE_CLOCK_SET:
  84                 if(start) return 0; /* already started */
  85                 break;
  86         case PIPE_STOPPED:
  87                 if(!start) return 0; /* already stopped */
  88                 break;
  89         default:
  90                 dev_err(&mgr->pci->dev,
  91                         "error mixart_set_pipe_state called with wrong pipe->status!\n");
  92                 return -EINVAL;      /* function called with wrong pipe status */
  93         }
  94
  95         system_msg_uid = 0x12345678; /* the event ! (take care: the MSB and two LSB's have to be 0) */
  96
  97         /* wait on the last MSG_SYSTEM_SEND_SYNCHRO_CMD command to be really finished */
  98
  99         request.message_id = MSG_SYSTEM_WAIT_SYNCHRO_CMD;
 100         request.uid = (struct mixart_uid){0,0};
 101         request.data = &system_msg_uid;
 102         request.size = sizeof(system_msg_uid);
 103
 104         err = snd_mixart_send_msg_wait_notif(mgr, &request, system_msg_uid);
 105         if(err) {
 106                 dev_err(&mgr->pci->dev,
 107                         "error : MSG_SYSTEM_WAIT_SYNCHRO_CMD was not notified !\n");
 108                 return err;
 109         }
 110
 111         /* start or stop the pipe (1 pipe) */
 112
 113         memset(&group_state, 0, sizeof(group_state));
 114         group_state.pipe_count = 1;
 115         group_state.pipe_uid[0] = pipe->group_uid;
 116
 117         if(start)
 118                 request.message_id = MSG_STREAM_START_STREAM_GRP_PACKET;
 119         else
 120                 request.message_id = MSG_STREAM_STOP_STREAM_GRP_PACKET;
 121
 122         request.uid = pipe->group_uid; /*(struct mixart_uid){0,0};*/
 123         request.data = &group_state;
 124         request.size = sizeof(group_state);
 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_ST***_STREAM_GRP_PACKET err=%x stat=%x !\n",
 130                         err, group_state_resp.txx_status);
 131                 return -EINVAL;
 132         }
 133
 134         if(start) {
 135                 u32 stat = 0;
 136
 137                 group_state.pipe_count = 0; /* in case of start same command once again with pipe_count=0 */
 138
 139                 err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
 140                 if (err < 0 || group_state_resp.txx_status != 0) {
 141                         dev_err(&mgr->pci->dev,
 142                                 "error MSG_STREAM_START_STREAM_GRP_PACKET err=%x stat=%x !\n",
 143                                 err, group_state_resp.txx_status);
 144                         return -EINVAL;
 145                 }
 146
 147                 /* in case of start send a synchro top */
 148
 149                 request.message_id = MSG_SYSTEM_SEND_SYNCHRO_CMD;
 150                 request.uid = (struct mixart_uid){0,0};
 151                 request.data = NULL;
 152                 request.size = 0;
 153
 154                 err = snd_mixart_send_msg(mgr, &request, sizeof(stat), &stat);
 155                 if (err < 0 || stat != 0) {
 156                         dev_err(&mgr->pci->dev,
 157                                 "error MSG_SYSTEM_SEND_SYNCHRO_CMD err=%x stat=%x !\n",
 158                                 err, stat);
 159                         return -EINVAL;
 160                 }
 161
 162                 pipe->status = PIPE_RUNNING;
 163         }
 164         else /* !start */
 165                 pipe->status = PIPE_STOPPED;
 166
 167         return 0;
 168 }
 169
 170
 171 static int mixart_set_clock(struct mixart_mgr *mgr,
 172                             struct mixart_pipe *pipe, unsigned int rate)
 173 {
 174         struct mixart_msg request;
 175         struct mixart_clock_properties clock_properties;
 176         struct mixart_clock_properties_resp clock_prop_resp;
 177         int err;
 178
 179         switch(pipe->status) {
 180         case PIPE_CLOCK_SET:
 181                 break;
 182         case PIPE_RUNNING:
 183                 if(rate != 0)
 184                         break;
 185         default:
 186                 if(rate == 0)
 187                         return 0; /* nothing to do */
 188                 else {
 189                         dev_err(&mgr->pci->dev,
 190                                 "error mixart_set_clock(%d) called with wrong pipe->status !\n",
 191                                 rate);
 192                         return -EINVAL;
 193                 }
 194         }
 195
 196         memset(&clock_properties, 0, sizeof(clock_properties));
 197         clock_properties.clock_generic_type = (rate != 0) ? CGT_INTERNAL_CLOCK : CGT_NO_CLOCK;
 198         clock_properties.clock_mode = CM_STANDALONE;
 199         clock_properties.frequency = rate;
 200         clock_properties.nb_callers = 1; /* only one entry in uid_caller ! */
 201         clock_properties.uid_caller[0] = pipe->group_uid;
 202
 203         dev_dbg(&mgr->pci->dev, "mixart_set_clock to %d kHz\n", rate);
 204
 205         request.message_id = MSG_CLOCK_SET_PROPERTIES;
 206         request.uid = mgr->uid_console_manager;
 207         request.data = &clock_properties;
 208         request.size = sizeof(clock_properties);
 209
 210         err = snd_mixart_send_msg(mgr, &request, sizeof(clock_prop_resp), &clock_prop_resp);
 211         if (err < 0 || clock_prop_resp.status != 0 || clock_prop_resp.clock_mode != CM_STANDALONE) {
 212                 dev_err(&mgr->pci->dev,
 213                         "error MSG_CLOCK_SET_PROPERTIES err=%x stat=%x mod=%x !\n",
 214                         err, clock_prop_resp.status, clock_prop_resp.clock_mode);
 215                 return -EINVAL;
 216         }
 217
 218         if(rate)  pipe->status = PIPE_CLOCK_SET;
 219         else      pipe->status = PIPE_RUNNING;
 220
 221         return 0;
 222 }
 223
 224
 225 /*
 226  *  Allocate or reference output pipe for analog IOs (pcmp0/1)
 227  */
 228 struct mixart_pipe *
 229 snd_mixart_add_ref_pipe(struct snd_mixart *chip, int pcm_number, int capture,
 230                         int monitoring)
 231 {
 232         int stream_count;
 233         struct mixart_pipe *pipe;
 234         struct mixart_msg request;
 235
 236         if(capture) {
 237                 if (pcm_number == MIXART_PCM_ANALOG) {
 238                         pipe = &(chip->pipe_in_ana);  /* analog inputs */
 239                 } else {
 240                         pipe = &(chip->pipe_in_dig); /* digital inputs */
 241                 }
 242                 request.message_id = MSG_STREAM_ADD_OUTPUT_GROUP;
 243                 stream_count = MIXART_CAPTURE_STREAMS;
 244         } else {
 245                 if (pcm_number == MIXART_PCM_ANALOG) {
 246                         pipe = &(chip->pipe_out_ana);  /* analog outputs */
 247                 } else {
 248                         pipe = &(chip->pipe_out_dig);  /* digital outputs */
 249                 }
 250                 request.message_id = MSG_STREAM_ADD_INPUT_GROUP;
 251                 stream_count = MIXART_PLAYBACK_STREAMS;
 252         }
 253
 254         /* a new stream is opened and there are already all streams in use */
 255         if( (monitoring == 0) && (pipe->references >= stream_count) ) {
 256                 return NULL;
 257         }
 258
 259         /* pipe is not yet defined */
 260         if( pipe->status == PIPE_UNDEFINED ) {
 261                 int err, i;
 262                 struct {
 263                         struct mixart_streaming_group_req sgroup_req;
 264                         struct mixart_streaming_group sgroup_resp;
 265                 } *buf;
 266
 267                 dev_dbg(chip->card->dev,
 268                         "add_ref_pipe audio chip(%d) pcm(%d)\n",
 269                         chip->chip_idx, pcm_number);
 270
 271                 buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 272                 if (!buf)
 273                         return NULL;
 274
 275                 request.uid = (struct mixart_uid){0,0};      /* should be StreamManagerUID, but zero is OK if there is only one ! */
 276                 request.data = &buf->sgroup_req;
 277                 request.size = sizeof(buf->sgroup_req);
 278
 279                 memset(&buf->sgroup_req, 0, sizeof(buf->sgroup_req));
 280
 281                 buf->sgroup_req.stream_count = stream_count;
 282                 buf->sgroup_req.channel_count = 2;
 283                 buf->sgroup_req.latency = 256;
 284                 buf->sgroup_req.connector = pipe->uid_left_connector;  /* the left connector */
 285
 286                 for (i=0; i<stream_count; i++) {
 287                         int j;
 288                         struct mixart_flowinfo *flowinfo;
 289                         struct mixart_bufferinfo *bufferinfo;
 290
 291                         /* we don't yet know the format, so config 16 bit pcm audio for instance */
 292                         buf->sgroup_req.stream_info[i].size_max_byte_frame = 1024;
 293                         buf->sgroup_req.stream_info[i].size_max_sample_frame = 256;
 294                         buf->sgroup_req.stream_info[i].nb_bytes_max_per_sample = MIXART_FLOAT_P__4_0_TO_HEX; /* is 4.0f */
 295
 296                         /* find the right bufferinfo_array */
 297                         j = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (pcm_number * (MIXART_PLAYBACK_STREAMS + MIXART_CAPTURE_STREAMS)) + i;
 298                         if(capture) j += MIXART_PLAYBACK_STREAMS; /* in the array capture is behind playback */
 299
 300                         buf->sgroup_req.flow_entry[i] = j;
 301
 302                         flowinfo = (struct mixart_flowinfo *)chip->mgr->flowinfo.area;
 303                         flowinfo[j].bufferinfo_array_phy_address = (u32)chip->mgr->bufferinfo.addr + (j * sizeof(struct mixart_bufferinfo));
 304                         flowinfo[j].bufferinfo_count = 1;               /* 1 will set the miXart to ring-buffer mode ! */
 305
 306                         bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
 307                         bufferinfo[j].buffer_address = 0;               /* buffer is not yet allocated */
 308                         bufferinfo[j].available_length = 0;             /* buffer is not yet allocated */
 309
 310                         /* construct the identifier of the stream buffer received in the interrupts ! */
 311                         bufferinfo[j].buffer_id = (chip->chip_idx << MIXART_NOTIFY_CARD_OFFSET) + (pcm_number << MIXART_NOTIFY_PCM_OFFSET ) + i;
 312                         if(capture) {
 313                                 bufferinfo[j].buffer_id |= MIXART_NOTIFY_CAPT_MASK;
 314                         }
 315                 }
 316
 317                 err = snd_mixart_send_msg(chip->mgr, &request, sizeof(buf->sgroup_resp), &buf->sgroup_resp);
 318                 if((err < 0) || (buf->sgroup_resp.status != 0)) {
 319                         dev_err(chip->card->dev,
 320                                 "error MSG_STREAM_ADD_**PUT_GROUP err=%x stat=%x !\n",
 321                                 err, buf->sgroup_resp.status);
 322                         kfree(buf);
 323                         return NULL;
 324                 }
 325
 326                 pipe->group_uid = buf->sgroup_resp.group;     /* id of the pipe, as returned by embedded */
 327                 pipe->stream_count = buf->sgroup_resp.stream_count;
 328                 /* pipe->stream_uid[i] = buf->sgroup_resp.stream[i].stream_uid; */
 329
 330                 pipe->status = PIPE_STOPPED;
 331                 kfree(buf);
 332         }
 333
 334         if(monitoring)  pipe->monitoring = 1;
 335         else            pipe->references++;
 336
 337         return pipe;
 338 }
 339
 340
 341 int snd_mixart_kill_ref_pipe(struct mixart_mgr *mgr,
 342                              struct mixart_pipe *pipe, int monitoring)
 343 {
 344         int err = 0;
 345
 346         if(pipe->status == PIPE_UNDEFINED)
 347                 return 0;
 348
 349         if(monitoring)
 350                 pipe->monitoring = 0;
 351         else
 352                 pipe->references--;
 353
 354         if((pipe->references <= 0) && (pipe->monitoring == 0)) {
 355
 356                 struct mixart_msg request;
 357                 struct mixart_delete_group_resp delete_resp;
 358
 359                 /* release the clock */
 360                 err = mixart_set_clock( mgr, pipe, 0);
 361                 if( err < 0 ) {
 362                         dev_err(&mgr->pci->dev,
 363                                 "mixart_set_clock(0) return error!\n");
 364                 }
 365
 366                 /* stop the pipe */
 367                 err = mixart_set_pipe_state(mgr, pipe, 0);
 368                 if( err < 0 ) {
 369                         dev_err(&mgr->pci->dev, "error stopping pipe!\n");
 370                 }
 371
 372                 request.message_id = MSG_STREAM_DELETE_GROUP;
 373                 request.uid = (struct mixart_uid){0,0};
 374                 request.data = &pipe->group_uid;            /* the streaming group ! */
 375                 request.size = sizeof(pipe->group_uid);
 376
 377                 /* delete the pipe */
 378                 err = snd_mixart_send_msg(mgr, &request, sizeof(delete_resp), &delete_resp);
 379                 if ((err < 0) || (delete_resp.status != 0)) {
 380                         dev_err(&mgr->pci->dev,
 381                                 "error MSG_STREAM_DELETE_GROUP err(%x), status(%x)\n",
 382                                 err, delete_resp.status);
 383                 }
 384
 385                 pipe->group_uid = (struct mixart_uid){0,0};
 386                 pipe->stream_count = 0;
 387                 pipe->status = PIPE_UNDEFINED;
 388         }
 389
 390         return err;
 391 }
 392
 393 static int mixart_set_stream_state(struct mixart_stream *stream, int start)
 394 {
 395         struct snd_mixart *chip;
 396         struct mixart_stream_state_req stream_state_req;
 397         struct mixart_msg request;
 398
 399         if(!stream->substream)
 400                 return -EINVAL;
 401
 402         memset(&stream_state_req, 0, sizeof(stream_state_req));
 403         stream_state_req.stream_count = 1;
 404         stream_state_req.stream_info.stream_desc.uid_pipe = stream->pipe->group_uid;
 405         stream_state_req.stream_info.stream_desc.stream_idx = stream->substream->number;
 406
 407         if (stream->substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 408                 request.message_id = start ? MSG_STREAM_START_INPUT_STAGE_PACKET : MSG_STREAM_STOP_INPUT_STAGE_PACKET;
 409         else
 410                 request.message_id = start ? MSG_STREAM_START_OUTPUT_STAGE_PACKET : MSG_STREAM_STOP_OUTPUT_STAGE_PACKET;
 411
 412         request.uid = (struct mixart_uid){0,0};
 413         request.data = &stream_state_req;
 414         request.size = sizeof(stream_state_req);
 415
 416         stream->abs_period_elapsed = 0;            /* reset stream pos      */
 417         stream->buf_periods = 0;
 418         stream->buf_period_frag = 0;
 419
 420         chip = snd_pcm_substream_chip(stream->substream);
 421
 422         return snd_mixart_send_msg_nonblock(chip->mgr, &request);
 423 }
 424
 425 /*
 426  *  Trigger callback
 427  */
 428
 429 static int snd_mixart_trigger(struct snd_pcm_substream *subs, int cmd)
 430 {
 431         struct mixart_stream *stream = subs->runtime->private_data;
 432
 433         switch (cmd) {
 434         case SNDRV_PCM_TRIGGER_START:
 435
 436                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_START\n");
 437
 438                 /* START_STREAM */
 439                 if( mixart_set_stream_state(stream, 1) )
 440                         return -EINVAL;
 441
 442                 stream->status = MIXART_STREAM_STATUS_RUNNING;
 443
 444                 break;
 445         case SNDRV_PCM_TRIGGER_STOP:
 446
 447                 /* STOP_STREAM */
 448                 if( mixart_set_stream_state(stream, 0) )
 449                         return -EINVAL;
 450
 451                 stream->status = MIXART_STREAM_STATUS_OPEN;
 452
 453                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_STOP\n");
 454
 455                 break;
 456
 457         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 458                 /* TODO */
 459                 stream->status = MIXART_STREAM_STATUS_PAUSE;
 460                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_PUSH\n");
 461                 break;
 462         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 463                 /* TODO */
 464                 stream->status = MIXART_STREAM_STATUS_RUNNING;
 465                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_RELEASE\n");
 466                 break;
 467         default:
 468                 return -EINVAL;
 469         }
 470         return 0;
 471 }
 472
 473 static int mixart_sync_nonblock_events(struct mixart_mgr *mgr)
 474 {
 475         unsigned long timeout = jiffies + HZ;
 476         while (atomic_read(&mgr->msg_processed) > 0) {
 477                 if (time_after(jiffies, timeout)) {
 478                         dev_err(&mgr->pci->dev,
 479                                 "mixart: cannot process nonblock events!\n");
 480                         return -EBUSY;
 481                 }
 482                 schedule_timeout_uninterruptible(1);
 483         }
 484         return 0;
 485 }
 486
 487 /*
 488  *  prepare callback for all pcms
 489  */
 490 static int snd_mixart_prepare(struct snd_pcm_substream *subs)
 491 {
 492         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 493         struct mixart_stream *stream = subs->runtime->private_data;
 494
 495         /* TODO de façon non bloquante, réappliquer les hw_params (rate, bits, codec) */
 496
 497         dev_dbg(chip->card->dev, "snd_mixart_prepare\n");
 498
 499         mixart_sync_nonblock_events(chip->mgr);
 500
 501         /* only the first stream can choose the sample rate */
 502         /* the further opened streams will be limited to its frequency (see open) */
 503         if(chip->mgr->ref_count_rate == 1)
 504                 chip->mgr->sample_rate = subs->runtime->rate;
 505
 506         /* set the clock only once (first stream) on the same pipe */
 507         if(stream->pipe->references == 1) {
 508                 if( mixart_set_clock(chip->mgr, stream->pipe, subs->runtime->rate) )
 509                         return -EINVAL;
 510         }
 511
 512         return 0;
 513 }
 514
 515
 516 static int mixart_set_format(struct mixart_stream *stream, snd_pcm_format_t format)
 517 {
 518         int err;
 519         struct snd_mixart *chip;
 520         struct mixart_msg request;
 521         struct mixart_stream_param_desc stream_param;
 522         struct mixart_return_uid resp;
 523
 524         chip = snd_pcm_substream_chip(stream->substream);
 525
 526         memset(&stream_param, 0, sizeof(stream_param));
 527
 528         stream_param.coding_type = CT_LINEAR;
 529         stream_param.number_of_channel = stream->channels;
 530
 531         stream_param.sampling_freq = chip->mgr->sample_rate;
 532         if(stream_param.sampling_freq == 0)
 533                 stream_param.sampling_freq = 44100; /* if frequency not yet defined, use some default */
 534
 535         switch(format){
 536         case SNDRV_PCM_FORMAT_U8:
 537                 stream_param.sample_type = ST_INTEGER_8;
 538                 stream_param.sample_size = 8;
 539                 break;
 540         case SNDRV_PCM_FORMAT_S16_LE:
 541                 stream_param.sample_type = ST_INTEGER_16LE;
 542                 stream_param.sample_size = 16;
 543                 break;
 544         case SNDRV_PCM_FORMAT_S16_BE:
 545                 stream_param.sample_type = ST_INTEGER_16BE;
 546                 stream_param.sample_size = 16;
 547                 break;
 548         case SNDRV_PCM_FORMAT_S24_3LE:
 549                 stream_param.sample_type = ST_INTEGER_24LE;
 550                 stream_param.sample_size = 24;
 551                 break;
 552         case SNDRV_PCM_FORMAT_S24_3BE:
 553                 stream_param.sample_type = ST_INTEGER_24BE;
 554                 stream_param.sample_size = 24;
 555                 break;
 556         case SNDRV_PCM_FORMAT_FLOAT_LE:
 557                 stream_param.sample_type = ST_FLOATING_POINT_32LE;
 558                 stream_param.sample_size = 32;
 559                 break;
 560         case  SNDRV_PCM_FORMAT_FLOAT_BE:
 561                 stream_param.sample_type = ST_FLOATING_POINT_32BE;
 562                 stream_param.sample_size = 32;
 563                 break;
 564         default:
 565                 dev_err(chip->card->dev,
 566                         "error mixart_set_format() : unknown format\n");
 567                 return -EINVAL;
 568         }
 569
 570         dev_dbg(chip->card->dev,
 571                 "set SNDRV_PCM_FORMAT sample_type(%d) sample_size(%d) freq(%d) channels(%d)\n",
 572                    stream_param.sample_type, stream_param.sample_size, stream_param.sampling_freq, stream->channels);
 573
 574         /* TODO: what else to configure ? */
 575         /* stream_param.samples_per_frame = 2; */
 576         /* stream_param.bytes_per_frame = 4; */
 577         /* stream_param.bytes_per_sample = 2; */
 578
 579         stream_param.pipe_count = 1;      /* set to 1 */
 580         stream_param.stream_count = 1;    /* set to 1 */
 581         stream_param.stream_desc[0].uid_pipe = stream->pipe->group_uid;
 582         stream_param.stream_desc[0].stream_idx = stream->substream->number;
 583
 584         request.message_id = MSG_STREAM_SET_INPUT_STAGE_PARAM;
 585         request.uid = (struct mixart_uid){0,0};
 586         request.data = &stream_param;
 587         request.size = sizeof(stream_param);
 588
 589         err = snd_mixart_send_msg(chip->mgr, &request, sizeof(resp), &resp);
 590         if((err < 0) || resp.error_code) {
 591                 dev_err(chip->card->dev,
 592                         "MSG_STREAM_SET_INPUT_STAGE_PARAM err=%x; resp=%x\n",
 593                         err, resp.error_code);
 594                 return -EINVAL;
 595         }
 596         return 0;
 597 }
 598
 599
 600 /*
 601  *  HW_PARAMS callback for all pcms
 602  */
 603 static int snd_mixart_hw_params(struct snd_pcm_substream *subs,
 604                                 struct snd_pcm_hw_params *hw)
 605 {
 606         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 607         struct mixart_mgr *mgr = chip->mgr;
 608         struct mixart_stream *stream = subs->runtime->private_data;
 609         snd_pcm_format_t format;
 610         int err;
 611         int channels;
 612
 613         /* set up channels */
 614         channels = params_channels(hw);
 615
 616         /*  set up format for the stream */
 617         format = params_format(hw);
 618
 619         mutex_lock(&mgr->setup_mutex);
 620
 621         /* update the stream levels */
 622         if( stream->pcm_number <= MIXART_PCM_DIGITAL ) {
 623                 int is_aes = stream->pcm_number > MIXART_PCM_ANALOG;
 624                 if( subs->stream == SNDRV_PCM_STREAM_PLAYBACK )
 625                         mixart_update_playback_stream_level(chip, is_aes, subs->number);
 626                 else
 627                         mixart_update_capture_stream_level( chip, is_aes);
 628         }
 629
 630         stream->channels = channels;
 631
 632         /* set the format to the board */
 633         err = mixart_set_format(stream, format);
 634         if(err < 0) {
 635                 mutex_unlock(&mgr->setup_mutex);
 636                 return err;
 637         }
 638
 639         /* allocate buffer */
 640         err = snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw));
 641
 642         if (err > 0) {
 643                 struct mixart_bufferinfo *bufferinfo;
 644                 int i = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (stream->pcm_number * (MIXART_PLAYBACK_STREAMS+MIXART_CAPTURE_STREAMS)) + subs->number;
 645                 if( subs->stream == SNDRV_PCM_STREAM_CAPTURE ) {
 646                         i += MIXART_PLAYBACK_STREAMS; /* in array capture is behind playback */
 647                 }
 648
 649                 bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
 650                 bufferinfo[i].buffer_address = subs->runtime->dma_addr;
 651                 bufferinfo[i].available_length = subs->runtime->dma_bytes;
 652                 /* bufferinfo[i].buffer_id  is already defined */
 653
 654                 dev_dbg(chip->card->dev,
 655                         "snd_mixart_hw_params(pcm %d) : dma_addr(%x) dma_bytes(%x) subs-number(%d)\n",
 656                         i, bufferinfo[i].buffer_address,
 657                                 bufferinfo[i].available_length,
 658                                 subs->number);
 659         }
 660         mutex_unlock(&mgr->setup_mutex);
 661
 662         return err;
 663 }
 664
 665 static int snd_mixart_hw_free(struct snd_pcm_substream *subs)
 666 {
 667         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 668         snd_pcm_lib_free_pages(subs);
 669         mixart_sync_nonblock_events(chip->mgr);
 670         return 0;
 671 }
 672
 673
 674
 675 /*
 676  *  TODO CONFIGURATION SPACE for all pcms, mono pcm must update channels_max
 677  */
 678 static const struct snd_pcm_hardware snd_mixart_analog_caps =
 679 {
 680         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 681                               SNDRV_PCM_INFO_MMAP_VALID |
 682                               SNDRV_PCM_INFO_PAUSE),
 683         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
 684                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
 685                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
 686                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
 687         .rates            = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 688         .rate_min         = 8000,
 689         .rate_max         = 48000,
 690         .channels_min     = 1,
 691         .channels_max     = 2,
 692         .buffer_bytes_max = (32*1024),
 693         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
 694         .period_bytes_max = (16*1024),
 695         .periods_min      = 2,
 696         .periods_max      = (32*1024/256),
 697 };
 698
 699 static const struct snd_pcm_hardware snd_mixart_digital_caps =
 700 {
 701         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 702                               SNDRV_PCM_INFO_MMAP_VALID |
 703                               SNDRV_PCM_INFO_PAUSE),
 704         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
 705                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
 706                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
 707                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
 708         .rates            = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
 709         .rate_min         = 32000,
 710         .rate_max         = 48000,
 711         .channels_min     = 1,
 712         .channels_max     = 2,
 713         .buffer_bytes_max = (32*1024),
 714         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
 715         .period_bytes_max = (16*1024),
 716         .periods_min      = 2,
 717         .periods_max      = (32*1024/256),
 718 };
 719
 720
 721 static int snd_mixart_playback_open(struct snd_pcm_substream *subs)
 722 {
 723         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
 724         struct mixart_mgr        *mgr = chip->mgr;
 725         struct snd_pcm_runtime *runtime = subs->runtime;
 726         struct snd_pcm *pcm = subs->pcm;
 727         struct mixart_stream     *stream;
 728         struct mixart_pipe       *pipe;
 729         int err = 0;
 730         int pcm_number;
 731
 732         mutex_lock(&mgr->setup_mutex);
 733
 734         if ( pcm == chip->pcm ) {
 735                 pcm_number = MIXART_PCM_ANALOG;
 736                 runtime->hw = snd_mixart_analog_caps;
 737         } else {
 738                 snd_BUG_ON(pcm != chip->pcm_dig);
 739                 pcm_number = MIXART_PCM_DIGITAL;
 740                 runtime->hw = snd_mixart_digital_caps;
 741         }
 742         dev_dbg(chip->card->dev,
 743                 "snd_mixart_playback_open C%d/P%d/Sub%d\n",
 744                 chip->chip_idx, pcm_number, subs->number);
 745
 746         /* get stream info */
 747         stream = &(chip->playback_stream[pcm_number][subs->number]);
 748
 749         if (stream->status != MIXART_STREAM_STATUS_FREE){
 750                 /* streams in use */
 751                 dev_err(chip->card->dev,
 752                         "snd_mixart_playback_open C%d/P%d/Sub%d in use\n",
 753                         chip->chip_idx, pcm_number, subs->number);
 754                 err = -EBUSY;
 755                 goto _exit_open;
 756         }
 757
 758         /* get pipe pointer (out pipe) */
 759         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 0, 0);
 760
 761         if (pipe == NULL) {
 762                 err = -EINVAL;
 763                 goto _exit_open;
 764         }
 765
 766         /* start the pipe if necessary */
 767         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
 768         if( err < 0 ) {
 769                 dev_err(chip->card->dev, "error starting pipe!\n");
 770                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
 771                 err = -EINVAL;
 772                 goto _exit_open;
 773         }
 774
 775         stream->pipe        = pipe;
 776         stream->pcm_number  = pcm_number;
 777         stream->status      = MIXART_STREAM_STATUS_OPEN;
 778         stream->substream   = subs;
 779         stream->channels    = 0; /* not configured yet */
 780
 781         runtime->private_data = stream;
 782
 783         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 784         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
 785
 786         /* if a sample rate is already used, another stream cannot change */
 787         if(mgr->ref_count_rate++) {
 788                 if(mgr->sample_rate) {
 789                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
 790                 }
 791         }
 792
 793  _exit_open:
 794         mutex_unlock(&mgr->setup_mutex);
 795
 796         return err;
 797 }
 798
 799
 800 static int snd_mixart_capture_open(struct snd_pcm_substream *subs)
 801 {
 802         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
 803         struct mixart_mgr        *mgr = chip->mgr;
 804         struct snd_pcm_runtime *runtime = subs->runtime;
 805         struct snd_pcm *pcm = subs->pcm;
 806         struct mixart_stream     *stream;
 807         struct mixart_pipe       *pipe;
 808         int err = 0;
 809         int pcm_number;
 810
 811         mutex_lock(&mgr->setup_mutex);
 812
 813         if ( pcm == chip->pcm ) {
 814                 pcm_number = MIXART_PCM_ANALOG;
 815                 runtime->hw = snd_mixart_analog_caps;
 816         } else {
 817                 snd_BUG_ON(pcm != chip->pcm_dig);
 818                 pcm_number = MIXART_PCM_DIGITAL;
 819                 runtime->hw = snd_mixart_digital_caps;
 820         }
 821
 822         runtime->hw.channels_min = 2; /* for instance, no mono */
 823
 824         dev_dbg(chip->card->dev, "snd_mixart_capture_open C%d/P%d/Sub%d\n",
 825                 chip->chip_idx, pcm_number, subs->number);
 826
 827         /* get stream info */
 828         stream = &(chip->capture_stream[pcm_number]);
 829
 830         if (stream->status != MIXART_STREAM_STATUS_FREE){
 831                 /* streams in use */
 832                 dev_err(chip->card->dev,
 833                         "snd_mixart_capture_open C%d/P%d/Sub%d in use\n",
 834                         chip->chip_idx, pcm_number, subs->number);
 835                 err = -EBUSY;
 836                 goto _exit_open;
 837         }
 838
 839         /* get pipe pointer (in pipe) */
 840         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 1, 0);
 841
 842         if (pipe == NULL) {
 843                 err = -EINVAL;
 844                 goto _exit_open;
 845         }
 846
 847         /* start the pipe if necessary */
 848         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
 849         if( err < 0 ) {
 850                 dev_err(chip->card->dev, "error starting pipe!\n");
 851                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
 852                 err = -EINVAL;
 853                 goto _exit_open;
 854         }
 855
 856         stream->pipe        = pipe;
 857         stream->pcm_number  = pcm_number;
 858         stream->status      = MIXART_STREAM_STATUS_OPEN;
 859         stream->substream   = subs;
 860         stream->channels    = 0; /* not configured yet */
 861
 862         runtime->private_data = stream;
 863
 864         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 865         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
 866
 867         /* if a sample rate is already used, another stream cannot change */
 868         if(mgr->ref_count_rate++) {
 869                 if(mgr->sample_rate) {
 870                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
 871                 }
 872         }
 873
 874  _exit_open:
 875         mutex_unlock(&mgr->setup_mutex);
 876
 877         return err;
 878 }
 879
 880
 881
 882 static int snd_mixart_close(struct snd_pcm_substream *subs)
 883 {
 884         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 885         struct mixart_mgr *mgr = chip->mgr;
 886         struct mixart_stream *stream = subs->runtime->private_data;
 887
 888         mutex_lock(&mgr->setup_mutex);
 889
 890         dev_dbg(chip->card->dev, "snd_mixart_close C%d/P%d/Sub%d\n",
 891                 chip->chip_idx, stream->pcm_number, subs->number);
 892
 893         /* sample rate released */
 894         if(--mgr->ref_count_rate == 0) {
 895                 mgr->sample_rate = 0;
 896         }
 897
 898         /* delete pipe */
 899         if (snd_mixart_kill_ref_pipe(mgr, stream->pipe, 0 ) < 0) {
 900
 901                 dev_err(chip->card->dev,
 902                         "error snd_mixart_kill_ref_pipe C%dP%d\n",
 903                         chip->chip_idx, stream->pcm_number);
 904         }
 905
 906         stream->pipe      = NULL;
 907         stream->status    = MIXART_STREAM_STATUS_FREE;
 908         stream->substream = NULL;
 909
 910         mutex_unlock(&mgr->setup_mutex);
 911         return 0;
 912 }
 913
 914
 915 static snd_pcm_uframes_t snd_mixart_stream_pointer(struct snd_pcm_substream *subs)
 916 {
 917         struct snd_pcm_runtime *runtime = subs->runtime;
 918         struct mixart_stream   *stream  = runtime->private_data;
 919
 920         return (snd_pcm_uframes_t)((stream->buf_periods * runtime->period_size) + stream->buf_period_frag);
 921 }
 922
 923
 924
 925 static const struct snd_pcm_ops snd_mixart_playback_ops = {
 926         .open      = snd_mixart_playback_open,
 927         .close     = snd_mixart_close,
 928         .ioctl     = snd_pcm_lib_ioctl,
 929         .prepare   = snd_mixart_prepare,
 930         .hw_params = snd_mixart_hw_params,
 931         .hw_free   = snd_mixart_hw_free,
 932         .trigger   = snd_mixart_trigger,
 933         .pointer   = snd_mixart_stream_pointer,
 934 };
 935
 936 static const struct snd_pcm_ops snd_mixart_capture_ops = {
 937         .open      = snd_mixart_capture_open,
 938         .close     = snd_mixart_close,
 939         .ioctl     = snd_pcm_lib_ioctl,
 940         .prepare   = snd_mixart_prepare,
 941         .hw_params = snd_mixart_hw_params,
 942         .hw_free   = snd_mixart_hw_free,
 943         .trigger   = snd_mixart_trigger,
 944         .pointer   = snd_mixart_stream_pointer,
 945 };
 946
 947 static void preallocate_buffers(struct snd_mixart *chip, struct snd_pcm *pcm)
 948 {
 949 #if 0
 950         struct snd_pcm_substream *subs;
 951         int stream;
 952
 953         for (stream = 0; stream < 2; stream++) {
 954                 int idx = 0;
 955                 for (subs = pcm->streams[stream].substream; subs; subs = subs->next, idx++)
 956                         /* set up the unique device id with the chip index */
 957                         subs->dma_device.id = subs->pcm->device << 16 |
 958                                 subs->stream << 8 | (subs->number + 1) |
 959                                 (chip->chip_idx + 1) << 24;
 960         }
 961 #endif
 962         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 963                                               snd_dma_pci_data(chip->mgr->pci), 32*1024, 32*1024);
 964 }
 965
 966 /*
 967  */
 968 static int snd_mixart_pcm_analog(struct snd_mixart *chip)
 969 {
 970         int err;
 971         struct snd_pcm *pcm;
 972         char name[32];
 973
 974         sprintf(name, "miXart analog %d", chip->chip_idx);
 975         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_ANALOG,
 976                                MIXART_PLAYBACK_STREAMS,
 977                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
 978                 dev_err(chip->card->dev,
 979                         "cannot create the analog pcm %d\n", chip->chip_idx);
 980                 return err;
 981         }
 982
 983         pcm->private_data = chip;
 984
 985         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
 986         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
 987
 988         pcm->info_flags = 0;
 989         pcm->nonatomic = true;
 990         strcpy(pcm->name, name);
 991
 992         preallocate_buffers(chip, pcm);
 993
 994         chip->pcm = pcm;
 995         return 0;
 996 }
 997
 998
 999 /*
1000  */
1001 static int snd_mixart_pcm_digital(struct snd_mixart *chip)
1002 {
1003         int err;
1004         struct snd_pcm *pcm;
1005         char name[32];
1006
1007         sprintf(name, "miXart AES/EBU %d", chip->chip_idx);
1008         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_DIGITAL,
1009                                MIXART_PLAYBACK_STREAMS,
1010                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
1011                 dev_err(chip->card->dev,
1012                         "cannot create the digital pcm %d\n", chip->chip_idx);
1013                 return err;
1014         }
1015
1016         pcm->private_data = chip;
1017
1018         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
1019         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
1020
1021         pcm->info_flags = 0;
1022         pcm->nonatomic = true;
1023         strcpy(pcm->name, name);
1024
1025         preallocate_buffers(chip, pcm);
1026
1027         chip->pcm_dig = pcm;
1028         return 0;
1029 }
1030
1031 static int snd_mixart_chip_free(struct snd_mixart *chip)
1032 {
1033         kfree(chip);
1034         return 0;
1035 }
1036
1037 static int snd_mixart_chip_dev_free(struct snd_device *device)
1038 {
1039         struct snd_mixart *chip = device->device_data;
1040         return snd_mixart_chip_free(chip);
1041 }
1042
1043
1044 /*
1045  */
1046 static int snd_mixart_create(struct mixart_mgr *mgr, struct snd_card *card, int idx)
1047 {
1048         int err;
1049         struct snd_mixart *chip;
1050         static struct snd_device_ops ops = {
1051                 .dev_free = snd_mixart_chip_dev_free,
1052         };
1053
1054         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1055         if (!chip)
1056                 return -ENOMEM;
1057
1058         chip->card = card;
1059         chip->chip_idx = idx;
1060         chip->mgr = mgr;
1061
1062         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1063                 snd_mixart_chip_free(chip);
1064                 return err;
1065         }
1066
1067         mgr->chip[idx] = chip;
1068         return 0;
1069 }
1070
1071 int snd_mixart_create_pcm(struct snd_mixart* chip)
1072 {
1073         int err;
1074
1075         err = snd_mixart_pcm_analog(chip);
1076         if (err < 0)
1077                 return err;
1078
1079         if(chip->mgr->board_type == MIXART_DAUGHTER_TYPE_AES) {
1080
1081                 err = snd_mixart_pcm_digital(chip);
1082                 if (err < 0)
1083                         return err;
1084         }
1085         return err;
1086 }
1087
1088
1089 /*
1090  * release all the cards assigned to a manager instance
1091  */
1092 static int snd_mixart_free(struct mixart_mgr *mgr)
1093 {
1094         unsigned int i;
1095
1096         for (i = 0; i < mgr->num_cards; i++) {
1097                 if (mgr->chip[i])
1098                         snd_card_free(mgr->chip[i]->card);
1099         }
1100
1101         /* stop mailbox */
1102         snd_mixart_exit_mailbox(mgr);
1103
1104         /* release irq  */
1105         if (mgr->irq >= 0)
1106                 free_irq(mgr->irq, mgr);
1107
1108         /* reset board if some firmware was loaded */
1109         if(mgr->dsp_loaded) {
1110                 snd_mixart_reset_board(mgr);
1111                 dev_dbg(&mgr->pci->dev, "reset miXart !\n");
1112         }
1113
1114         /* release the i/o ports */
1115         for (i = 0; i < 2; ++i)
1116                 iounmap(mgr->mem[i].virt);
1117
1118         pci_release_regions(mgr->pci);
1119
1120         /* free flowarray */
1121         if(mgr->flowinfo.area) {
1122                 snd_dma_free_pages(&mgr->flowinfo);
1123                 mgr->flowinfo.area = NULL;
1124         }
1125         /* free bufferarray */
1126         if(mgr->bufferinfo.area) {
1127                 snd_dma_free_pages(&mgr->bufferinfo);
1128                 mgr->bufferinfo.area = NULL;
1129         }
1130
1131         pci_disable_device(mgr->pci);
1132         kfree(mgr);
1133         return 0;
1134 }
1135
1136 /*
1137  * proc interface
1138  */
1139
1140 /*
1141   mixart_BA0 proc interface for BAR 0 - read callback
1142  */
1143 static ssize_t snd_mixart_BA0_read(struct snd_info_entry *entry,
1144                                    void *file_private_data,
1145                                    struct file *file, char __user *buf,
1146                                    size_t count, loff_t pos)
1147 {
1148         struct mixart_mgr *mgr = entry->private_data;
1149
1150         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1151         if (copy_to_user_fromio(buf, MIXART_MEM(mgr, pos), count))
1152                 return -EFAULT;
1153         return count;
1154 }
1155
1156 /*
1157   mixart_BA1 proc interface for BAR 1 - read callback
1158  */
1159 static ssize_t snd_mixart_BA1_read(struct snd_info_entry *entry,
1160                                    void *file_private_data,
1161                                    struct file *file, char __user *buf,
1162                                    size_t count, loff_t pos)
1163 {
1164         struct mixart_mgr *mgr = entry->private_data;
1165
1166         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1167         if (copy_to_user_fromio(buf, MIXART_REG(mgr, pos), count))
1168                 return -EFAULT;
1169         return count;
1170 }
1171
1172 static struct snd_info_entry_ops snd_mixart_proc_ops_BA0 = {
1173         .read   = snd_mixart_BA0_read,
1174 };
1175
1176 static struct snd_info_entry_ops snd_mixart_proc_ops_BA1 = {
1177         .read   = snd_mixart_BA1_read,
1178 };
1179
1180
1181 static void snd_mixart_proc_read(struct snd_info_entry *entry,
1182                                  struct snd_info_buffer *buffer)
1183 {
1184         struct snd_mixart *chip = entry->private_data;
1185         u32 ref;
1186
1187         snd_iprintf(buffer, "Digigram miXart (alsa card %d)\n\n", chip->chip_idx);
1188
1189         /* stats available when embedded OS is running */
1190         if (chip->mgr->dsp_loaded & ( 1 << MIXART_MOTHERBOARD_ELF_INDEX)) {
1191                 snd_iprintf(buffer, "- hardware -\n");
1192                 switch (chip->mgr->board_type ) {
1193                 case MIXART_DAUGHTER_TYPE_NONE     : snd_iprintf(buffer, "\tmiXart8 (no daughter board)\n\n"); break;
1194                 case MIXART_DAUGHTER_TYPE_AES      : snd_iprintf(buffer, "\tmiXart8 AES/EBU\n\n"); break;
1195                 case MIXART_DAUGHTER_TYPE_COBRANET : snd_iprintf(buffer, "\tmiXart8 Cobranet\n\n"); break;
1196                 default:                             snd_iprintf(buffer, "\tUNKNOWN!\n\n"); break;
1197                 }
1198
1199                 snd_iprintf(buffer, "- system load -\n");
1200
1201                 /* get perf reference */
1202
1203                 ref = readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_SYSTEM_LOAD_OFFSET));
1204
1205                 if (ref) {
1206                         u32 mailbox   = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_MAILBX_LOAD_OFFSET)) / ref;
1207                         u32 streaming = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_STREAM_LOAD_OFFSET)) / ref;
1208                         u32 interr    = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_INTERR_LOAD_OFFSET)) / ref;
1209
1210                         snd_iprintf(buffer, "\tstreaming          : %d\n", streaming);
1211                         snd_iprintf(buffer, "\tmailbox            : %d\n", mailbox);
1212                         snd_iprintf(buffer, "\tinterrupts handling : %d\n\n", interr);
1213                 }
1214         } /* endif elf loaded */
1215 }
1216
1217 static void snd_mixart_proc_init(struct snd_mixart *chip)
1218 {
1219         struct snd_info_entry *entry;
1220
1221         /* text interface to read perf and temp meters */
1222         if (! snd_card_proc_new(chip->card, "board_info", &entry)) {
1223                 entry->private_data = chip;
1224                 entry->c.text.read = snd_mixart_proc_read;
1225         }
1226
1227         if (! snd_card_proc_new(chip->card, "mixart_BA0", &entry)) {
1228                 entry->content = SNDRV_INFO_CONTENT_DATA;
1229                 entry->private_data = chip->mgr;
1230                 entry->c.ops = &snd_mixart_proc_ops_BA0;
1231                 entry->size = MIXART_BA0_SIZE;
1232         }
1233         if (! snd_card_proc_new(chip->card, "mixart_BA1", &entry)) {
1234                 entry->content = SNDRV_INFO_CONTENT_DATA;
1235                 entry->private_data = chip->mgr;
1236                 entry->c.ops = &snd_mixart_proc_ops_BA1;
1237                 entry->size = MIXART_BA1_SIZE;
1238         }
1239 }
1240 /* end of proc interface */
1241
1242
1243 /*
1244  *    probe function - creates the card manager
1245  */
1246 static int snd_mixart_probe(struct pci_dev *pci,
1247                             const struct pci_device_id *pci_id)
1248 {
1249         static int dev;
1250         struct mixart_mgr *mgr;
1251         unsigned int i;
1252         int err;
1253         size_t size;
1254
1255         /*
1256          */
1257         if (dev >= SNDRV_CARDS)
1258                 return -ENODEV;
1259         if (! enable[dev]) {
1260                 dev++;
1261                 return -ENOENT;
1262         }
1263
1264         /* enable PCI device */
1265         if ((err = pci_enable_device(pci)) < 0)
1266                 return err;
1267         pci_set_master(pci);
1268
1269         /* check if we can restrict PCI DMA transfers to 32 bits */
1270         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) {
1271                 dev_err(&pci->dev,
1272                         "architecture does not support 32bit PCI busmaster DMA\n");
1273                 pci_disable_device(pci);
1274                 return -ENXIO;
1275         }
1276
1277         /*
1278          */
1279         mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1280         if (! mgr) {
1281                 pci_disable_device(pci);
1282                 return -ENOMEM;
1283         }
1284
1285         mgr->pci = pci;
1286         mgr->irq = -1;
1287
1288         /* resource assignment */
1289         if ((err = pci_request_regions(pci, CARD_NAME)) < 0) {
1290                 kfree(mgr);
1291                 pci_disable_device(pci);
1292                 return err;
1293         }
1294         for (i = 0; i < 2; i++) {
1295                 mgr->mem[i].phys = pci_resource_start(pci, i);
1296                 mgr->mem[i].virt = pci_ioremap_bar(pci, i);
1297                 if (!mgr->mem[i].virt) {
1298                         dev_err(&pci->dev, "unable to remap resource 0x%lx\n",
1299                                mgr->mem[i].phys);
1300                         snd_mixart_free(mgr);
1301                         return -EBUSY;
1302                 }
1303         }
1304
1305         if (request_threaded_irq(pci->irq, snd_mixart_interrupt,
1306                                  snd_mixart_threaded_irq, IRQF_SHARED,
1307                                  KBUILD_MODNAME, mgr)) {
1308                 dev_err(&pci->dev, "unable to grab IRQ %d\n", pci->irq);
1309                 snd_mixart_free(mgr);
1310                 return -EBUSY;
1311         }
1312         mgr->irq = pci->irq;
1313
1314         /* init mailbox  */
1315         mgr->msg_fifo_readptr = 0;
1316         mgr->msg_fifo_writeptr = 0;
1317
1318         mutex_init(&mgr->lock);
1319         mutex_init(&mgr->msg_lock);
1320         init_waitqueue_head(&mgr->msg_sleep);
1321         atomic_set(&mgr->msg_processed, 0);
1322
1323         /* init setup mutex*/
1324         mutex_init(&mgr->setup_mutex);
1325
1326         /* card assignment */
1327         mgr->num_cards = MIXART_MAX_CARDS; /* 4  FIXME: configurable? */
1328         for (i = 0; i < mgr->num_cards; i++) {
1329                 struct snd_card *card;
1330                 char tmpid[16];
1331                 int idx;
1332
1333                 if (index[dev] < 0)
1334                         idx = index[dev];
1335                 else
1336                         idx = index[dev] + i;
1337                 snprintf(tmpid, sizeof(tmpid), "%s-%d", id[dev] ? id[dev] : "MIXART", i);
1338                 err = snd_card_new(&pci->dev, idx, tmpid, THIS_MODULE,
1339                                    0, &card);
1340
1341                 if (err < 0) {
1342                         dev_err(&pci->dev, "cannot allocate the card %d\n", i);
1343                         snd_mixart_free(mgr);
1344                         return err;
1345                 }
1346
1347                 strcpy(card->driver, CARD_NAME);
1348                 snprintf(card->shortname, sizeof(card->shortname),
1349                          "Digigram miXart [PCM #%d]", i);
1350                 snprintf(card->longname, sizeof(card->longname),
1351                         "Digigram miXart at 0x%lx & 0x%lx, irq %i [PCM #%d]",
1352                         mgr->mem[0].phys, mgr->mem[1].phys, mgr->irq, i);
1353
1354                 if ((err = snd_mixart_create(mgr, card, i)) < 0) {
1355                         snd_card_free(card);
1356                         snd_mixart_free(mgr);
1357                         return err;
1358                 }
1359
1360                 if(i==0) {
1361                         /* init proc interface only for chip0 */
1362                         snd_mixart_proc_init(mgr->chip[i]);
1363                 }
1364
1365                 if ((err = snd_card_register(card)) < 0) {
1366                         snd_mixart_free(mgr);
1367                         return err;
1368                 }
1369         }
1370
1371         /* init firmware status (mgr->dsp_loaded reset in hwdep_new) */
1372         mgr->board_type = MIXART_DAUGHTER_TYPE_NONE;
1373
1374         /* create array of streaminfo */
1375         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1376                             sizeof(struct mixart_flowinfo)) );
1377         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1378                                 size, &mgr->flowinfo) < 0) {
1379                 snd_mixart_free(mgr);
1380                 return -ENOMEM;
1381         }
1382         /* init streaminfo_array */
1383         memset(mgr->flowinfo.area, 0, size);
1384
1385         /* create array of bufferinfo */
1386         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1387                             sizeof(struct mixart_bufferinfo)) );
1388         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1389                                 size, &mgr->bufferinfo) < 0) {
1390                 snd_mixart_free(mgr);
1391                 return -ENOMEM;
1392         }
1393         /* init bufferinfo_array */
1394         memset(mgr->bufferinfo.area, 0, size);
1395
1396         /* set up firmware */
1397         err = snd_mixart_setup_firmware(mgr);
1398         if (err < 0) {
1399                 snd_mixart_free(mgr);
1400                 return err;
1401         }
1402
1403         pci_set_drvdata(pci, mgr);
1404         dev++;
1405         return 0;
1406 }
1407
1408 static void snd_mixart_remove(struct pci_dev *pci)
1409 {
1410         snd_mixart_free(pci_get_drvdata(pci));
1411 }
1412
1413 static struct pci_driver mixart_driver = {
1414         .name = KBUILD_MODNAME,
1415         .id_table = snd_mixart_ids,
1416         .probe = snd_mixart_probe,
1417         .remove = snd_mixart_remove,
1418 };
1419
1420 module_pci_driver(mixart_driver);