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                 /* fall through */
 186         default:
 187                 if(rate == 0)
 188                         return 0; /* nothing to do */
 189                 else {
 190                         dev_err(&mgr->pci->dev,
 191                                 "error mixart_set_clock(%d) called with wrong pipe->status !\n",
 192                                 rate);
 193                         return -EINVAL;
 194                 }
 195         }
 196
 197         memset(&clock_properties, 0, sizeof(clock_properties));
 198         clock_properties.clock_generic_type = (rate != 0) ? CGT_INTERNAL_CLOCK : CGT_NO_CLOCK;
 199         clock_properties.clock_mode = CM_STANDALONE;
 200         clock_properties.frequency = rate;
 201         clock_properties.nb_callers = 1; /* only one entry in uid_caller ! */
 202         clock_properties.uid_caller[0] = pipe->group_uid;
 203
 204         dev_dbg(&mgr->pci->dev, "mixart_set_clock to %d kHz\n", rate);
 205
 206         request.message_id = MSG_CLOCK_SET_PROPERTIES;
 207         request.uid = mgr->uid_console_manager;
 208         request.data = &clock_properties;
 209         request.size = sizeof(clock_properties);
 210
 211         err = snd_mixart_send_msg(mgr, &request, sizeof(clock_prop_resp), &clock_prop_resp);
 212         if (err < 0 || clock_prop_resp.status != 0 || clock_prop_resp.clock_mode != CM_STANDALONE) {
 213                 dev_err(&mgr->pci->dev,
 214                         "error MSG_CLOCK_SET_PROPERTIES err=%x stat=%x mod=%x !\n",
 215                         err, clock_prop_resp.status, clock_prop_resp.clock_mode);
 216                 return -EINVAL;
 217         }
 218
 219         if(rate)  pipe->status = PIPE_CLOCK_SET;
 220         else      pipe->status = PIPE_RUNNING;
 221
 222         return 0;
 223 }
 224
 225
 226 /*
 227  *  Allocate or reference output pipe for analog IOs (pcmp0/1)
 228  */
 229 struct mixart_pipe *
 230 snd_mixart_add_ref_pipe(struct snd_mixart *chip, int pcm_number, int capture,
 231                         int monitoring)
 232 {
 233         int stream_count;
 234         struct mixart_pipe *pipe;
 235         struct mixart_msg request;
 236
 237         if(capture) {
 238                 if (pcm_number == MIXART_PCM_ANALOG) {
 239                         pipe = &(chip->pipe_in_ana);  /* analog inputs */
 240                 } else {
 241                         pipe = &(chip->pipe_in_dig); /* digital inputs */
 242                 }
 243                 request.message_id = MSG_STREAM_ADD_OUTPUT_GROUP;
 244                 stream_count = MIXART_CAPTURE_STREAMS;
 245         } else {
 246                 if (pcm_number == MIXART_PCM_ANALOG) {
 247                         pipe = &(chip->pipe_out_ana);  /* analog outputs */
 248                 } else {
 249                         pipe = &(chip->pipe_out_dig);  /* digital outputs */
 250                 }
 251                 request.message_id = MSG_STREAM_ADD_INPUT_GROUP;
 252                 stream_count = MIXART_PLAYBACK_STREAMS;
 253         }
 254
 255         /* a new stream is opened and there are already all streams in use */
 256         if( (monitoring == 0) && (pipe->references >= stream_count) ) {
 257                 return NULL;
 258         }
 259
 260         /* pipe is not yet defined */
 261         if( pipe->status == PIPE_UNDEFINED ) {
 262                 int err, i;
 263                 struct {
 264                         struct mixart_streaming_group_req sgroup_req;
 265                         struct mixart_streaming_group sgroup_resp;
 266                 } *buf;
 267
 268                 dev_dbg(chip->card->dev,
 269                         "add_ref_pipe audio chip(%d) pcm(%d)\n",
 270                         chip->chip_idx, pcm_number);
 271
 272                 buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 273                 if (!buf)
 274                         return NULL;
 275
 276                 request.uid = (struct mixart_uid){0,0};      /* should be StreamManagerUID, but zero is OK if there is only one ! */
 277                 request.data = &buf->sgroup_req;
 278                 request.size = sizeof(buf->sgroup_req);
 279
 280                 memset(&buf->sgroup_req, 0, sizeof(buf->sgroup_req));
 281
 282                 buf->sgroup_req.stream_count = stream_count;
 283                 buf->sgroup_req.channel_count = 2;
 284                 buf->sgroup_req.latency = 256;
 285                 buf->sgroup_req.connector = pipe->uid_left_connector;  /* the left connector */
 286
 287                 for (i=0; i<stream_count; i++) {
 288                         int j;
 289                         struct mixart_flowinfo *flowinfo;
 290                         struct mixart_bufferinfo *bufferinfo;
 291
 292                         /* we don't yet know the format, so config 16 bit pcm audio for instance */
 293                         buf->sgroup_req.stream_info[i].size_max_byte_frame = 1024;
 294                         buf->sgroup_req.stream_info[i].size_max_sample_frame = 256;
 295                         buf->sgroup_req.stream_info[i].nb_bytes_max_per_sample = MIXART_FLOAT_P__4_0_TO_HEX; /* is 4.0f */
 296
 297                         /* find the right bufferinfo_array */
 298                         j = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (pcm_number * (MIXART_PLAYBACK_STREAMS + MIXART_CAPTURE_STREAMS)) + i;
 299                         if(capture) j += MIXART_PLAYBACK_STREAMS; /* in the array capture is behind playback */
 300
 301                         buf->sgroup_req.flow_entry[i] = j;
 302
 303                         flowinfo = (struct mixart_flowinfo *)chip->mgr->flowinfo.area;
 304                         flowinfo[j].bufferinfo_array_phy_address = (u32)chip->mgr->bufferinfo.addr + (j * sizeof(struct mixart_bufferinfo));
 305                         flowinfo[j].bufferinfo_count = 1;               /* 1 will set the miXart to ring-buffer mode ! */
 306
 307                         bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
 308                         bufferinfo[j].buffer_address = 0;               /* buffer is not yet allocated */
 309                         bufferinfo[j].available_length = 0;             /* buffer is not yet allocated */
 310
 311                         /* construct the identifier of the stream buffer received in the interrupts ! */
 312                         bufferinfo[j].buffer_id = (chip->chip_idx << MIXART_NOTIFY_CARD_OFFSET) + (pcm_number << MIXART_NOTIFY_PCM_OFFSET ) + i;
 313                         if(capture) {
 314                                 bufferinfo[j].buffer_id |= MIXART_NOTIFY_CAPT_MASK;
 315                         }
 316                 }
 317
 318                 err = snd_mixart_send_msg(chip->mgr, &request, sizeof(buf->sgroup_resp), &buf->sgroup_resp);
 319                 if((err < 0) || (buf->sgroup_resp.status != 0)) {
 320                         dev_err(chip->card->dev,
 321                                 "error MSG_STREAM_ADD_**PUT_GROUP err=%x stat=%x !\n",
 322                                 err, buf->sgroup_resp.status);
 323                         kfree(buf);
 324                         return NULL;
 325                 }
 326
 327                 pipe->group_uid = buf->sgroup_resp.group;     /* id of the pipe, as returned by embedded */
 328                 pipe->stream_count = buf->sgroup_resp.stream_count;
 329                 /* pipe->stream_uid[i] = buf->sgroup_resp.stream[i].stream_uid; */
 330
 331                 pipe->status = PIPE_STOPPED;
 332                 kfree(buf);
 333         }
 334
 335         if(monitoring)  pipe->monitoring = 1;
 336         else            pipe->references++;
 337
 338         return pipe;
 339 }
 340
 341
 342 int snd_mixart_kill_ref_pipe(struct mixart_mgr *mgr,
 343                              struct mixart_pipe *pipe, int monitoring)
 344 {
 345         int err = 0;
 346
 347         if(pipe->status == PIPE_UNDEFINED)
 348                 return 0;
 349
 350         if(monitoring)
 351                 pipe->monitoring = 0;
 352         else
 353                 pipe->references--;
 354
 355         if((pipe->references <= 0) && (pipe->monitoring == 0)) {
 356
 357                 struct mixart_msg request;
 358                 struct mixart_delete_group_resp delete_resp;
 359
 360                 /* release the clock */
 361                 err = mixart_set_clock( mgr, pipe, 0);
 362                 if( err < 0 ) {
 363                         dev_err(&mgr->pci->dev,
 364                                 "mixart_set_clock(0) return error!\n");
 365                 }
 366
 367                 /* stop the pipe */
 368                 err = mixart_set_pipe_state(mgr, pipe, 0);
 369                 if( err < 0 ) {
 370                         dev_err(&mgr->pci->dev, "error stopping pipe!\n");
 371                 }
 372
 373                 request.message_id = MSG_STREAM_DELETE_GROUP;
 374                 request.uid = (struct mixart_uid){0,0};
 375                 request.data = &pipe->group_uid;            /* the streaming group ! */
 376                 request.size = sizeof(pipe->group_uid);
 377
 378                 /* delete the pipe */
 379                 err = snd_mixart_send_msg(mgr, &request, sizeof(delete_resp), &delete_resp);
 380                 if ((err < 0) || (delete_resp.status != 0)) {
 381                         dev_err(&mgr->pci->dev,
 382                                 "error MSG_STREAM_DELETE_GROUP err(%x), status(%x)\n",
 383                                 err, delete_resp.status);
 384                 }
 385
 386                 pipe->group_uid = (struct mixart_uid){0,0};
 387                 pipe->stream_count = 0;
 388                 pipe->status = PIPE_UNDEFINED;
 389         }
 390
 391         return err;
 392 }
 393
 394 static int mixart_set_stream_state(struct mixart_stream *stream, int start)
 395 {
 396         struct snd_mixart *chip;
 397         struct mixart_stream_state_req stream_state_req;
 398         struct mixart_msg request;
 399
 400         if(!stream->substream)
 401                 return -EINVAL;
 402
 403         memset(&stream_state_req, 0, sizeof(stream_state_req));
 404         stream_state_req.stream_count = 1;
 405         stream_state_req.stream_info.stream_desc.uid_pipe = stream->pipe->group_uid;
 406         stream_state_req.stream_info.stream_desc.stream_idx = stream->substream->number;
 407
 408         if (stream->substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 409                 request.message_id = start ? MSG_STREAM_START_INPUT_STAGE_PACKET : MSG_STREAM_STOP_INPUT_STAGE_PACKET;
 410         else
 411                 request.message_id = start ? MSG_STREAM_START_OUTPUT_STAGE_PACKET : MSG_STREAM_STOP_OUTPUT_STAGE_PACKET;
 412
 413         request.uid = (struct mixart_uid){0,0};
 414         request.data = &stream_state_req;
 415         request.size = sizeof(stream_state_req);
 416
 417         stream->abs_period_elapsed = 0;            /* reset stream pos      */
 418         stream->buf_periods = 0;
 419         stream->buf_period_frag = 0;
 420
 421         chip = snd_pcm_substream_chip(stream->substream);
 422
 423         return snd_mixart_send_msg_nonblock(chip->mgr, &request);
 424 }
 425
 426 /*
 427  *  Trigger callback
 428  */
 429
 430 static int snd_mixart_trigger(struct snd_pcm_substream *subs, int cmd)
 431 {
 432         struct mixart_stream *stream = subs->runtime->private_data;
 433
 434         switch (cmd) {
 435         case SNDRV_PCM_TRIGGER_START:
 436
 437                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_START\n");
 438
 439                 /* START_STREAM */
 440                 if( mixart_set_stream_state(stream, 1) )
 441                         return -EINVAL;
 442
 443                 stream->status = MIXART_STREAM_STATUS_RUNNING;
 444
 445                 break;
 446         case SNDRV_PCM_TRIGGER_STOP:
 447
 448                 /* STOP_STREAM */
 449                 if( mixart_set_stream_state(stream, 0) )
 450                         return -EINVAL;
 451
 452                 stream->status = MIXART_STREAM_STATUS_OPEN;
 453
 454                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_STOP\n");
 455
 456                 break;
 457
 458         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 459                 /* TODO */
 460                 stream->status = MIXART_STREAM_STATUS_PAUSE;
 461                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_PUSH\n");
 462                 break;
 463         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 464                 /* TODO */
 465                 stream->status = MIXART_STREAM_STATUS_RUNNING;
 466                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_RELEASE\n");
 467                 break;
 468         default:
 469                 return -EINVAL;
 470         }
 471         return 0;
 472 }
 473
 474 static int mixart_sync_nonblock_events(struct mixart_mgr *mgr)
 475 {
 476         unsigned long timeout = jiffies + HZ;
 477         while (atomic_read(&mgr->msg_processed) > 0) {
 478                 if (time_after(jiffies, timeout)) {
 479                         dev_err(&mgr->pci->dev,
 480                                 "mixart: cannot process nonblock events!\n");
 481                         return -EBUSY;
 482                 }
 483                 schedule_timeout_uninterruptible(1);
 484         }
 485         return 0;
 486 }
 487
 488 /*
 489  *  prepare callback for all pcms
 490  */
 491 static int snd_mixart_prepare(struct snd_pcm_substream *subs)
 492 {
 493         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 494         struct mixart_stream *stream = subs->runtime->private_data;
 495
 496         /* TODO de façon non bloquante, réappliquer les hw_params (rate, bits, codec) */
 497
 498         dev_dbg(chip->card->dev, "snd_mixart_prepare\n");
 499
 500         mixart_sync_nonblock_events(chip->mgr);
 501
 502         /* only the first stream can choose the sample rate */
 503         /* the further opened streams will be limited to its frequency (see open) */
 504         if(chip->mgr->ref_count_rate == 1)
 505                 chip->mgr->sample_rate = subs->runtime->rate;
 506
 507         /* set the clock only once (first stream) on the same pipe */
 508         if(stream->pipe->references == 1) {
 509                 if( mixart_set_clock(chip->mgr, stream->pipe, subs->runtime->rate) )
 510                         return -EINVAL;
 511         }
 512
 513         return 0;
 514 }
 515
 516
 517 static int mixart_set_format(struct mixart_stream *stream, snd_pcm_format_t format)
 518 {
 519         int err;
 520         struct snd_mixart *chip;
 521         struct mixart_msg request;
 522         struct mixart_stream_param_desc stream_param;
 523         struct mixart_return_uid resp;
 524
 525         chip = snd_pcm_substream_chip(stream->substream);
 526
 527         memset(&stream_param, 0, sizeof(stream_param));
 528
 529         stream_param.coding_type = CT_LINEAR;
 530         stream_param.number_of_channel = stream->channels;
 531
 532         stream_param.sampling_freq = chip->mgr->sample_rate;
 533         if(stream_param.sampling_freq == 0)
 534                 stream_param.sampling_freq = 44100; /* if frequency not yet defined, use some default */
 535
 536         switch(format){
 537         case SNDRV_PCM_FORMAT_U8:
 538                 stream_param.sample_type = ST_INTEGER_8;
 539                 stream_param.sample_size = 8;
 540                 break;
 541         case SNDRV_PCM_FORMAT_S16_LE:
 542                 stream_param.sample_type = ST_INTEGER_16LE;
 543                 stream_param.sample_size = 16;
 544                 break;
 545         case SNDRV_PCM_FORMAT_S16_BE:
 546                 stream_param.sample_type = ST_INTEGER_16BE;
 547                 stream_param.sample_size = 16;
 548                 break;
 549         case SNDRV_PCM_FORMAT_S24_3LE:
 550                 stream_param.sample_type = ST_INTEGER_24LE;
 551                 stream_param.sample_size = 24;
 552                 break;
 553         case SNDRV_PCM_FORMAT_S24_3BE:
 554                 stream_param.sample_type = ST_INTEGER_24BE;
 555                 stream_param.sample_size = 24;
 556                 break;
 557         case SNDRV_PCM_FORMAT_FLOAT_LE:
 558                 stream_param.sample_type = ST_FLOATING_POINT_32LE;
 559                 stream_param.sample_size = 32;
 560                 break;
 561         case  SNDRV_PCM_FORMAT_FLOAT_BE:
 562                 stream_param.sample_type = ST_FLOATING_POINT_32BE;
 563                 stream_param.sample_size = 32;
 564                 break;
 565         default:
 566                 dev_err(chip->card->dev,
 567                         "error mixart_set_format() : unknown format\n");
 568                 return -EINVAL;
 569         }
 570
 571         dev_dbg(chip->card->dev,
 572                 "set SNDRV_PCM_FORMAT sample_type(%d) sample_size(%d) freq(%d) channels(%d)\n",
 573                    stream_param.sample_type, stream_param.sample_size, stream_param.sampling_freq, stream->channels);
 574
 575         /* TODO: what else to configure ? */
 576         /* stream_param.samples_per_frame = 2; */
 577         /* stream_param.bytes_per_frame = 4; */
 578         /* stream_param.bytes_per_sample = 2; */
 579
 580         stream_param.pipe_count = 1;      /* set to 1 */
 581         stream_param.stream_count = 1;    /* set to 1 */
 582         stream_param.stream_desc[0].uid_pipe = stream->pipe->group_uid;
 583         stream_param.stream_desc[0].stream_idx = stream->substream->number;
 584
 585         request.message_id = MSG_STREAM_SET_INPUT_STAGE_PARAM;
 586         request.uid = (struct mixart_uid){0,0};
 587         request.data = &stream_param;
 588         request.size = sizeof(stream_param);
 589
 590         err = snd_mixart_send_msg(chip->mgr, &request, sizeof(resp), &resp);
 591         if((err < 0) || resp.error_code) {
 592                 dev_err(chip->card->dev,
 593                         "MSG_STREAM_SET_INPUT_STAGE_PARAM err=%x; resp=%x\n",
 594                         err, resp.error_code);
 595                 return -EINVAL;
 596         }
 597         return 0;
 598 }
 599
 600
 601 /*
 602  *  HW_PARAMS callback for all pcms
 603  */
 604 static int snd_mixart_hw_params(struct snd_pcm_substream *subs,
 605                                 struct snd_pcm_hw_params *hw)
 606 {
 607         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 608         struct mixart_mgr *mgr = chip->mgr;
 609         struct mixart_stream *stream = subs->runtime->private_data;
 610         snd_pcm_format_t format;
 611         int err;
 612         int channels;
 613
 614         /* set up channels */
 615         channels = params_channels(hw);
 616
 617         /*  set up format for the stream */
 618         format = params_format(hw);
 619
 620         mutex_lock(&mgr->setup_mutex);
 621
 622         /* update the stream levels */
 623         if( stream->pcm_number <= MIXART_PCM_DIGITAL ) {
 624                 int is_aes = stream->pcm_number > MIXART_PCM_ANALOG;
 625                 if( subs->stream == SNDRV_PCM_STREAM_PLAYBACK )
 626                         mixart_update_playback_stream_level(chip, is_aes, subs->number);
 627                 else
 628                         mixart_update_capture_stream_level( chip, is_aes);
 629         }
 630
 631         stream->channels = channels;
 632
 633         /* set the format to the board */
 634         err = mixart_set_format(stream, format);
 635         if(err < 0) {
 636                 mutex_unlock(&mgr->setup_mutex);
 637                 return err;
 638         }
 639
 640         /* allocate buffer */
 641         err = snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw));
 642
 643         if (err > 0) {
 644                 struct mixart_bufferinfo *bufferinfo;
 645                 int i = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (stream->pcm_number * (MIXART_PLAYBACK_STREAMS+MIXART_CAPTURE_STREAMS)) + subs->number;
 646                 if( subs->stream == SNDRV_PCM_STREAM_CAPTURE ) {
 647                         i += MIXART_PLAYBACK_STREAMS; /* in array capture is behind playback */
 648                 }
 649
 650                 bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
 651                 bufferinfo[i].buffer_address = subs->runtime->dma_addr;
 652                 bufferinfo[i].available_length = subs->runtime->dma_bytes;
 653                 /* bufferinfo[i].buffer_id  is already defined */
 654
 655                 dev_dbg(chip->card->dev,
 656                         "snd_mixart_hw_params(pcm %d) : dma_addr(%x) dma_bytes(%x) subs-number(%d)\n",
 657                         i, bufferinfo[i].buffer_address,
 658                                 bufferinfo[i].available_length,
 659                                 subs->number);
 660         }
 661         mutex_unlock(&mgr->setup_mutex);
 662
 663         return err;
 664 }
 665
 666 static int snd_mixart_hw_free(struct snd_pcm_substream *subs)
 667 {
 668         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 669         snd_pcm_lib_free_pages(subs);
 670         mixart_sync_nonblock_events(chip->mgr);
 671         return 0;
 672 }
 673
 674
 675
 676 /*
 677  *  TODO CONFIGURATION SPACE for all pcms, mono pcm must update channels_max
 678  */
 679 static const struct snd_pcm_hardware snd_mixart_analog_caps =
 680 {
 681         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 682                               SNDRV_PCM_INFO_MMAP_VALID |
 683                               SNDRV_PCM_INFO_PAUSE),
 684         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
 685                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
 686                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
 687                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
 688         .rates            = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 689         .rate_min         = 8000,
 690         .rate_max         = 48000,
 691         .channels_min     = 1,
 692         .channels_max     = 2,
 693         .buffer_bytes_max = (32*1024),
 694         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
 695         .period_bytes_max = (16*1024),
 696         .periods_min      = 2,
 697         .periods_max      = (32*1024/256),
 698 };
 699
 700 static const struct snd_pcm_hardware snd_mixart_digital_caps =
 701 {
 702         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 703                               SNDRV_PCM_INFO_MMAP_VALID |
 704                               SNDRV_PCM_INFO_PAUSE),
 705         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
 706                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
 707                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
 708                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
 709         .rates            = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
 710         .rate_min         = 32000,
 711         .rate_max         = 48000,
 712         .channels_min     = 1,
 713         .channels_max     = 2,
 714         .buffer_bytes_max = (32*1024),
 715         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
 716         .period_bytes_max = (16*1024),
 717         .periods_min      = 2,
 718         .periods_max      = (32*1024/256),
 719 };
 720
 721
 722 static int snd_mixart_playback_open(struct snd_pcm_substream *subs)
 723 {
 724         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
 725         struct mixart_mgr        *mgr = chip->mgr;
 726         struct snd_pcm_runtime *runtime = subs->runtime;
 727         struct snd_pcm *pcm = subs->pcm;
 728         struct mixart_stream     *stream;
 729         struct mixart_pipe       *pipe;
 730         int err = 0;
 731         int pcm_number;
 732
 733         mutex_lock(&mgr->setup_mutex);
 734
 735         if ( pcm == chip->pcm ) {
 736                 pcm_number = MIXART_PCM_ANALOG;
 737                 runtime->hw = snd_mixart_analog_caps;
 738         } else {
 739                 snd_BUG_ON(pcm != chip->pcm_dig);
 740                 pcm_number = MIXART_PCM_DIGITAL;
 741                 runtime->hw = snd_mixart_digital_caps;
 742         }
 743         dev_dbg(chip->card->dev,
 744                 "snd_mixart_playback_open C%d/P%d/Sub%d\n",
 745                 chip->chip_idx, pcm_number, subs->number);
 746
 747         /* get stream info */
 748         stream = &(chip->playback_stream[pcm_number][subs->number]);
 749
 750         if (stream->status != MIXART_STREAM_STATUS_FREE){
 751                 /* streams in use */
 752                 dev_err(chip->card->dev,
 753                         "snd_mixart_playback_open C%d/P%d/Sub%d in use\n",
 754                         chip->chip_idx, pcm_number, subs->number);
 755                 err = -EBUSY;
 756                 goto _exit_open;
 757         }
 758
 759         /* get pipe pointer (out pipe) */
 760         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 0, 0);
 761
 762         if (pipe == NULL) {
 763                 err = -EINVAL;
 764                 goto _exit_open;
 765         }
 766
 767         /* start the pipe if necessary */
 768         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
 769         if( err < 0 ) {
 770                 dev_err(chip->card->dev, "error starting pipe!\n");
 771                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
 772                 err = -EINVAL;
 773                 goto _exit_open;
 774         }
 775
 776         stream->pipe        = pipe;
 777         stream->pcm_number  = pcm_number;
 778         stream->status      = MIXART_STREAM_STATUS_OPEN;
 779         stream->substream   = subs;
 780         stream->channels    = 0; /* not configured yet */
 781
 782         runtime->private_data = stream;
 783
 784         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 785         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
 786
 787         /* if a sample rate is already used, another stream cannot change */
 788         if(mgr->ref_count_rate++) {
 789                 if(mgr->sample_rate) {
 790                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
 791                 }
 792         }
 793
 794  _exit_open:
 795         mutex_unlock(&mgr->setup_mutex);
 796
 797         return err;
 798 }
 799
 800
 801 static int snd_mixart_capture_open(struct snd_pcm_substream *subs)
 802 {
 803         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
 804         struct mixart_mgr        *mgr = chip->mgr;
 805         struct snd_pcm_runtime *runtime = subs->runtime;
 806         struct snd_pcm *pcm = subs->pcm;
 807         struct mixart_stream     *stream;
 808         struct mixart_pipe       *pipe;
 809         int err = 0;
 810         int pcm_number;
 811
 812         mutex_lock(&mgr->setup_mutex);
 813
 814         if ( pcm == chip->pcm ) {
 815                 pcm_number = MIXART_PCM_ANALOG;
 816                 runtime->hw = snd_mixart_analog_caps;
 817         } else {
 818                 snd_BUG_ON(pcm != chip->pcm_dig);
 819                 pcm_number = MIXART_PCM_DIGITAL;
 820                 runtime->hw = snd_mixart_digital_caps;
 821         }
 822
 823         runtime->hw.channels_min = 2; /* for instance, no mono */
 824
 825         dev_dbg(chip->card->dev, "snd_mixart_capture_open C%d/P%d/Sub%d\n",
 826                 chip->chip_idx, pcm_number, subs->number);
 827
 828         /* get stream info */
 829         stream = &(chip->capture_stream[pcm_number]);
 830
 831         if (stream->status != MIXART_STREAM_STATUS_FREE){
 832                 /* streams in use */
 833                 dev_err(chip->card->dev,
 834                         "snd_mixart_capture_open C%d/P%d/Sub%d in use\n",
 835                         chip->chip_idx, pcm_number, subs->number);
 836                 err = -EBUSY;
 837                 goto _exit_open;
 838         }
 839
 840         /* get pipe pointer (in pipe) */
 841         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 1, 0);
 842
 843         if (pipe == NULL) {
 844                 err = -EINVAL;
 845                 goto _exit_open;
 846         }
 847
 848         /* start the pipe if necessary */
 849         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
 850         if( err < 0 ) {
 851                 dev_err(chip->card->dev, "error starting pipe!\n");
 852                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
 853                 err = -EINVAL;
 854                 goto _exit_open;
 855         }
 856
 857         stream->pipe        = pipe;
 858         stream->pcm_number  = pcm_number;
 859         stream->status      = MIXART_STREAM_STATUS_OPEN;
 860         stream->substream   = subs;
 861         stream->channels    = 0; /* not configured yet */
 862
 863         runtime->private_data = stream;
 864
 865         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 866         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
 867
 868         /* if a sample rate is already used, another stream cannot change */
 869         if(mgr->ref_count_rate++) {
 870                 if(mgr->sample_rate) {
 871                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
 872                 }
 873         }
 874
 875  _exit_open:
 876         mutex_unlock(&mgr->setup_mutex);
 877
 878         return err;
 879 }
 880
 881
 882
 883 static int snd_mixart_close(struct snd_pcm_substream *subs)
 884 {
 885         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 886         struct mixart_mgr *mgr = chip->mgr;
 887         struct mixart_stream *stream = subs->runtime->private_data;
 888
 889         mutex_lock(&mgr->setup_mutex);
 890
 891         dev_dbg(chip->card->dev, "snd_mixart_close C%d/P%d/Sub%d\n",
 892                 chip->chip_idx, stream->pcm_number, subs->number);
 893
 894         /* sample rate released */
 895         if(--mgr->ref_count_rate == 0) {
 896                 mgr->sample_rate = 0;
 897         }
 898
 899         /* delete pipe */
 900         if (snd_mixart_kill_ref_pipe(mgr, stream->pipe, 0 ) < 0) {
 901
 902                 dev_err(chip->card->dev,
 903                         "error snd_mixart_kill_ref_pipe C%dP%d\n",
 904                         chip->chip_idx, stream->pcm_number);
 905         }
 906
 907         stream->pipe      = NULL;
 908         stream->status    = MIXART_STREAM_STATUS_FREE;
 909         stream->substream = NULL;
 910
 911         mutex_unlock(&mgr->setup_mutex);
 912         return 0;
 913 }
 914
 915
 916 static snd_pcm_uframes_t snd_mixart_stream_pointer(struct snd_pcm_substream *subs)
 917 {
 918         struct snd_pcm_runtime *runtime = subs->runtime;
 919         struct mixart_stream   *stream  = runtime->private_data;
 920
 921         return (snd_pcm_uframes_t)((stream->buf_periods * runtime->period_size) + stream->buf_period_frag);
 922 }
 923
 924
 925
 926 static const struct snd_pcm_ops snd_mixart_playback_ops = {
 927         .open      = snd_mixart_playback_open,
 928         .close     = snd_mixart_close,
 929         .ioctl     = snd_pcm_lib_ioctl,
 930         .prepare   = snd_mixart_prepare,
 931         .hw_params = snd_mixart_hw_params,
 932         .hw_free   = snd_mixart_hw_free,
 933         .trigger   = snd_mixart_trigger,
 934         .pointer   = snd_mixart_stream_pointer,
 935 };
 936
 937 static const struct snd_pcm_ops snd_mixart_capture_ops = {
 938         .open      = snd_mixart_capture_open,
 939         .close     = snd_mixart_close,
 940         .ioctl     = snd_pcm_lib_ioctl,
 941         .prepare   = snd_mixart_prepare,
 942         .hw_params = snd_mixart_hw_params,
 943         .hw_free   = snd_mixart_hw_free,
 944         .trigger   = snd_mixart_trigger,
 945         .pointer   = snd_mixart_stream_pointer,
 946 };
 947
 948 static void preallocate_buffers(struct snd_mixart *chip, struct snd_pcm *pcm)
 949 {
 950 #if 0
 951         struct snd_pcm_substream *subs;
 952         int stream;
 953
 954         for (stream = 0; stream < 2; stream++) {
 955                 int idx = 0;
 956                 for (subs = pcm->streams[stream].substream; subs; subs = subs->next, idx++)
 957                         /* set up the unique device id with the chip index */
 958                         subs->dma_device.id = subs->pcm->device << 16 |
 959                                 subs->stream << 8 | (subs->number + 1) |
 960                                 (chip->chip_idx + 1) << 24;
 961         }
 962 #endif
 963         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 964                                               snd_dma_pci_data(chip->mgr->pci), 32*1024, 32*1024);
 965 }
 966
 967 /*
 968  */
 969 static int snd_mixart_pcm_analog(struct snd_mixart *chip)
 970 {
 971         int err;
 972         struct snd_pcm *pcm;
 973         char name[32];
 974
 975         sprintf(name, "miXart analog %d", chip->chip_idx);
 976         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_ANALOG,
 977                                MIXART_PLAYBACK_STREAMS,
 978                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
 979                 dev_err(chip->card->dev,
 980                         "cannot create the analog pcm %d\n", chip->chip_idx);
 981                 return err;
 982         }
 983
 984         pcm->private_data = chip;
 985
 986         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
 987         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
 988
 989         pcm->info_flags = 0;
 990         pcm->nonatomic = true;
 991         strcpy(pcm->name, name);
 992
 993         preallocate_buffers(chip, pcm);
 994
 995         chip->pcm = pcm;
 996         return 0;
 997 }
 998
 999
1000 /*
1001  */
1002 static int snd_mixart_pcm_digital(struct snd_mixart *chip)
1003 {
1004         int err;
1005         struct snd_pcm *pcm;
1006         char name[32];
1007
1008         sprintf(name, "miXart AES/EBU %d", chip->chip_idx);
1009         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_DIGITAL,
1010                                MIXART_PLAYBACK_STREAMS,
1011                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
1012                 dev_err(chip->card->dev,
1013                         "cannot create the digital pcm %d\n", chip->chip_idx);
1014                 return err;
1015         }
1016
1017         pcm->private_data = chip;
1018
1019         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
1020         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
1021
1022         pcm->info_flags = 0;
1023         pcm->nonatomic = true;
1024         strcpy(pcm->name, name);
1025
1026         preallocate_buffers(chip, pcm);
1027
1028         chip->pcm_dig = pcm;
1029         return 0;
1030 }
1031
1032 static int snd_mixart_chip_free(struct snd_mixart *chip)
1033 {
1034         kfree(chip);
1035         return 0;
1036 }
1037
1038 static int snd_mixart_chip_dev_free(struct snd_device *device)
1039 {
1040         struct snd_mixart *chip = device->device_data;
1041         return snd_mixart_chip_free(chip);
1042 }
1043
1044
1045 /*
1046  */
1047 static int snd_mixart_create(struct mixart_mgr *mgr, struct snd_card *card, int idx)
1048 {
1049         int err;
1050         struct snd_mixart *chip;
1051         static struct snd_device_ops ops = {
1052                 .dev_free = snd_mixart_chip_dev_free,
1053         };
1054
1055         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1056         if (!chip)
1057                 return -ENOMEM;
1058
1059         chip->card = card;
1060         chip->chip_idx = idx;
1061         chip->mgr = mgr;
1062
1063         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1064                 snd_mixart_chip_free(chip);
1065                 return err;
1066         }
1067
1068         mgr->chip[idx] = chip;
1069         return 0;
1070 }
1071
1072 int snd_mixart_create_pcm(struct snd_mixart* chip)
1073 {
1074         int err;
1075
1076         err = snd_mixart_pcm_analog(chip);
1077         if (err < 0)
1078                 return err;
1079
1080         if(chip->mgr->board_type == MIXART_DAUGHTER_TYPE_AES) {
1081
1082                 err = snd_mixart_pcm_digital(chip);
1083                 if (err < 0)
1084                         return err;
1085         }
1086         return err;
1087 }
1088
1089
1090 /*
1091  * release all the cards assigned to a manager instance
1092  */
1093 static int snd_mixart_free(struct mixart_mgr *mgr)
1094 {
1095         unsigned int i;
1096
1097         for (i = 0; i < mgr->num_cards; i++) {
1098                 if (mgr->chip[i])
1099                         snd_card_free(mgr->chip[i]->card);
1100         }
1101
1102         /* stop mailbox */
1103         snd_mixart_exit_mailbox(mgr);
1104
1105         /* release irq  */
1106         if (mgr->irq >= 0)
1107                 free_irq(mgr->irq, mgr);
1108
1109         /* reset board if some firmware was loaded */
1110         if(mgr->dsp_loaded) {
1111                 snd_mixart_reset_board(mgr);
1112                 dev_dbg(&mgr->pci->dev, "reset miXart !\n");
1113         }
1114
1115         /* release the i/o ports */
1116         for (i = 0; i < 2; ++i)
1117                 iounmap(mgr->mem[i].virt);
1118
1119         pci_release_regions(mgr->pci);
1120
1121         /* free flowarray */
1122         if(mgr->flowinfo.area) {
1123                 snd_dma_free_pages(&mgr->flowinfo);
1124                 mgr->flowinfo.area = NULL;
1125         }
1126         /* free bufferarray */
1127         if(mgr->bufferinfo.area) {
1128                 snd_dma_free_pages(&mgr->bufferinfo);
1129                 mgr->bufferinfo.area = NULL;
1130         }
1131
1132         pci_disable_device(mgr->pci);
1133         kfree(mgr);
1134         return 0;
1135 }
1136
1137 /*
1138  * proc interface
1139  */
1140
1141 /*
1142   mixart_BA0 proc interface for BAR 0 - read callback
1143  */
1144 static ssize_t snd_mixart_BA0_read(struct snd_info_entry *entry,
1145                                    void *file_private_data,
1146                                    struct file *file, char __user *buf,
1147                                    size_t count, loff_t pos)
1148 {
1149         struct mixart_mgr *mgr = entry->private_data;
1150
1151         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1152         if (copy_to_user_fromio(buf, MIXART_MEM(mgr, pos), count))
1153                 return -EFAULT;
1154         return count;
1155 }
1156
1157 /*
1158   mixart_BA1 proc interface for BAR 1 - read callback
1159  */
1160 static ssize_t snd_mixart_BA1_read(struct snd_info_entry *entry,
1161                                    void *file_private_data,
1162                                    struct file *file, char __user *buf,
1163                                    size_t count, loff_t pos)
1164 {
1165         struct mixart_mgr *mgr = entry->private_data;
1166
1167         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1168         if (copy_to_user_fromio(buf, MIXART_REG(mgr, pos), count))
1169                 return -EFAULT;
1170         return count;
1171 }
1172
1173 static struct snd_info_entry_ops snd_mixart_proc_ops_BA0 = {
1174         .read   = snd_mixart_BA0_read,
1175 };
1176
1177 static struct snd_info_entry_ops snd_mixart_proc_ops_BA1 = {
1178         .read   = snd_mixart_BA1_read,
1179 };
1180
1181
1182 static void snd_mixart_proc_read(struct snd_info_entry *entry,
1183                                  struct snd_info_buffer *buffer)
1184 {
1185         struct snd_mixart *chip = entry->private_data;
1186         u32 ref;
1187
1188         snd_iprintf(buffer, "Digigram miXart (alsa card %d)\n\n", chip->chip_idx);
1189
1190         /* stats available when embedded OS is running */
1191         if (chip->mgr->dsp_loaded & ( 1 << MIXART_MOTHERBOARD_ELF_INDEX)) {
1192                 snd_iprintf(buffer, "- hardware -\n");
1193                 switch (chip->mgr->board_type ) {
1194                 case MIXART_DAUGHTER_TYPE_NONE     : snd_iprintf(buffer, "\tmiXart8 (no daughter board)\n\n"); break;
1195                 case MIXART_DAUGHTER_TYPE_AES      : snd_iprintf(buffer, "\tmiXart8 AES/EBU\n\n"); break;
1196                 case MIXART_DAUGHTER_TYPE_COBRANET : snd_iprintf(buffer, "\tmiXart8 Cobranet\n\n"); break;
1197                 default:                             snd_iprintf(buffer, "\tUNKNOWN!\n\n"); break;
1198                 }
1199
1200                 snd_iprintf(buffer, "- system load -\n");
1201
1202                 /* get perf reference */
1203
1204                 ref = readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_SYSTEM_LOAD_OFFSET));
1205
1206                 if (ref) {
1207                         u32 mailbox   = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_MAILBX_LOAD_OFFSET)) / ref;
1208                         u32 streaming = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_STREAM_LOAD_OFFSET)) / ref;
1209                         u32 interr    = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_INTERR_LOAD_OFFSET)) / ref;
1210
1211                         snd_iprintf(buffer, "\tstreaming          : %d\n", streaming);
1212                         snd_iprintf(buffer, "\tmailbox            : %d\n", mailbox);
1213                         snd_iprintf(buffer, "\tinterrupts handling : %d\n\n", interr);
1214                 }
1215         } /* endif elf loaded */
1216 }
1217
1218 static void snd_mixart_proc_init(struct snd_mixart *chip)
1219 {
1220         struct snd_info_entry *entry;
1221
1222         /* text interface to read perf and temp meters */
1223         if (! snd_card_proc_new(chip->card, "board_info", &entry)) {
1224                 entry->private_data = chip;
1225                 entry->c.text.read = snd_mixart_proc_read;
1226         }
1227
1228         if (! snd_card_proc_new(chip->card, "mixart_BA0", &entry)) {
1229                 entry->content = SNDRV_INFO_CONTENT_DATA;
1230                 entry->private_data = chip->mgr;
1231                 entry->c.ops = &snd_mixart_proc_ops_BA0;
1232                 entry->size = MIXART_BA0_SIZE;
1233         }
1234         if (! snd_card_proc_new(chip->card, "mixart_BA1", &entry)) {
1235                 entry->content = SNDRV_INFO_CONTENT_DATA;
1236                 entry->private_data = chip->mgr;
1237                 entry->c.ops = &snd_mixart_proc_ops_BA1;
1238                 entry->size = MIXART_BA1_SIZE;
1239         }
1240 }
1241 /* end of proc interface */
1242
1243
1244 /*
1245  *    probe function - creates the card manager
1246  */
1247 static int snd_mixart_probe(struct pci_dev *pci,
1248                             const struct pci_device_id *pci_id)
1249 {
1250         static int dev;
1251         struct mixart_mgr *mgr;
1252         unsigned int i;
1253         int err;
1254         size_t size;
1255
1256         /*
1257          */
1258         if (dev >= SNDRV_CARDS)
1259                 return -ENODEV;
1260         if (! enable[dev]) {
1261                 dev++;
1262                 return -ENOENT;
1263         }
1264
1265         /* enable PCI device */
1266         if ((err = pci_enable_device(pci)) < 0)
1267                 return err;
1268         pci_set_master(pci);
1269
1270         /* check if we can restrict PCI DMA transfers to 32 bits */
1271         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) {
1272                 dev_err(&pci->dev,
1273                         "architecture does not support 32bit PCI busmaster DMA\n");
1274                 pci_disable_device(pci);
1275                 return -ENXIO;
1276         }
1277
1278         /*
1279          */
1280         mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1281         if (! mgr) {
1282                 pci_disable_device(pci);
1283                 return -ENOMEM;
1284         }
1285
1286         mgr->pci = pci;
1287         mgr->irq = -1;
1288
1289         /* resource assignment */
1290         if ((err = pci_request_regions(pci, CARD_NAME)) < 0) {
1291                 kfree(mgr);
1292                 pci_disable_device(pci);
1293                 return err;
1294         }
1295         for (i = 0; i < 2; i++) {
1296                 mgr->mem[i].phys = pci_resource_start(pci, i);
1297                 mgr->mem[i].virt = pci_ioremap_bar(pci, i);
1298                 if (!mgr->mem[i].virt) {
1299                         dev_err(&pci->dev, "unable to remap resource 0x%lx\n",
1300                                mgr->mem[i].phys);
1301                         snd_mixart_free(mgr);
1302                         return -EBUSY;
1303                 }
1304         }
1305
1306         if (request_threaded_irq(pci->irq, snd_mixart_interrupt,
1307                                  snd_mixart_threaded_irq, IRQF_SHARED,
1308                                  KBUILD_MODNAME, mgr)) {
1309                 dev_err(&pci->dev, "unable to grab IRQ %d\n", pci->irq);
1310                 snd_mixart_free(mgr);
1311                 return -EBUSY;
1312         }
1313         mgr->irq = pci->irq;
1314
1315         /* init mailbox  */
1316         mgr->msg_fifo_readptr = 0;
1317         mgr->msg_fifo_writeptr = 0;
1318
1319         mutex_init(&mgr->lock);
1320         mutex_init(&mgr->msg_lock);
1321         init_waitqueue_head(&mgr->msg_sleep);
1322         atomic_set(&mgr->msg_processed, 0);
1323
1324         /* init setup mutex*/
1325         mutex_init(&mgr->setup_mutex);
1326
1327         /* card assignment */
1328         mgr->num_cards = MIXART_MAX_CARDS; /* 4  FIXME: configurable? */
1329         for (i = 0; i < mgr->num_cards; i++) {
1330                 struct snd_card *card;
1331                 char tmpid[16];
1332                 int idx;
1333
1334                 if (index[dev] < 0)
1335                         idx = index[dev];
1336                 else
1337                         idx = index[dev] + i;
1338                 snprintf(tmpid, sizeof(tmpid), "%s-%d", id[dev] ? id[dev] : "MIXART", i);
1339                 err = snd_card_new(&pci->dev, idx, tmpid, THIS_MODULE,
1340                                    0, &card);
1341
1342                 if (err < 0) {
1343                         dev_err(&pci->dev, "cannot allocate the card %d\n", i);
1344                         snd_mixart_free(mgr);
1345                         return err;
1346                 }
1347
1348                 strcpy(card->driver, CARD_NAME);
1349                 snprintf(card->shortname, sizeof(card->shortname),
1350                          "Digigram miXart [PCM #%d]", i);
1351                 snprintf(card->longname, sizeof(card->longname),
1352                         "Digigram miXart at 0x%lx & 0x%lx, irq %i [PCM #%d]",
1353                         mgr->mem[0].phys, mgr->mem[1].phys, mgr->irq, i);
1354
1355                 if ((err = snd_mixart_create(mgr, card, i)) < 0) {
1356                         snd_card_free(card);
1357                         snd_mixart_free(mgr);
1358                         return err;
1359                 }
1360
1361                 if(i==0) {
1362                         /* init proc interface only for chip0 */
1363                         snd_mixart_proc_init(mgr->chip[i]);
1364                 }
1365
1366                 if ((err = snd_card_register(card)) < 0) {
1367                         snd_mixart_free(mgr);
1368                         return err;
1369                 }
1370         }
1371
1372         /* init firmware status (mgr->dsp_loaded reset in hwdep_new) */
1373         mgr->board_type = MIXART_DAUGHTER_TYPE_NONE;
1374
1375         /* create array of streaminfo */
1376         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1377                             sizeof(struct mixart_flowinfo)) );
1378         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1379                                 size, &mgr->flowinfo) < 0) {
1380                 snd_mixart_free(mgr);
1381                 return -ENOMEM;
1382         }
1383         /* init streaminfo_array */
1384         memset(mgr->flowinfo.area, 0, size);
1385
1386         /* create array of bufferinfo */
1387         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1388                             sizeof(struct mixart_bufferinfo)) );
1389         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1390                                 size, &mgr->bufferinfo) < 0) {
1391                 snd_mixart_free(mgr);
1392                 return -ENOMEM;
1393         }
1394         /* init bufferinfo_array */
1395         memset(mgr->bufferinfo.area, 0, size);
1396
1397         /* set up firmware */
1398         err = snd_mixart_setup_firmware(mgr);
1399         if (err < 0) {
1400                 snd_mixart_free(mgr);
1401                 return err;
1402         }
1403
1404         pci_set_drvdata(pci, mgr);
1405         dev++;
1406         return 0;
1407 }
1408
1409 static void snd_mixart_remove(struct pci_dev *pci)
1410 {
1411         snd_mixart_free(pci_get_drvdata(pci));
1412 }
1413
1414 static struct pci_driver mixart_driver = {
1415         .name = KBUILD_MODNAME,
1416         .id_table = snd_mixart_ids,
1417         .probe = snd_mixart_probe,
1418         .remove = snd_mixart_remove,
1419 };
1420
1421 module_pci_driver(mixart_driver);