linux/sound/pci/mixart/mixart.c
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   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/moduleparam.h>
  29#include <linux/mutex.h>
  30
  31#include <sound/core.h>
  32#include <sound/initval.h>
  33#include <sound/info.h>
  34#include <sound/control.h>
  35#include <sound/pcm.h>
  36#include <sound/pcm_params.h>
  37#include "mixart.h"
  38#include "mixart_hwdep.h"
  39#include "mixart_core.h"
  40#include "mixart_mixer.h"
  41
  42#define CARD_NAME "miXart"
  43
  44MODULE_AUTHOR("Digigram <alsa@digigram.com>");
  45MODULE_DESCRIPTION("Digigram " CARD_NAME);
  46MODULE_LICENSE("GPL");
  47MODULE_SUPPORTED_DEVICE("{{Digigram," CARD_NAME "}}");
  48
  49static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;             /* Index 0-MAX */
  50static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;              /* ID for this card */
  51static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
  52
  53module_param_array(index, int, NULL, 0444);
  54MODULE_PARM_DESC(index, "Index value for Digigram " CARD_NAME " soundcard.");
  55module_param_array(id, charp, NULL, 0444);
  56MODULE_PARM_DESC(id, "ID string for Digigram " CARD_NAME " soundcard.");
  57module_param_array(enable, bool, NULL, 0444);
  58MODULE_PARM_DESC(enable, "Enable Digigram " CARD_NAME " soundcard.");
  59
  60/*
  61 */
  62
  63static struct pci_device_id snd_mixart_ids[] = {
  64        { PCI_VDEVICE(MOTOROLA, 0x0003), 0, }, /* MC8240 */
  65        { 0, }
  66};
  67
  68MODULE_DEVICE_TABLE(pci, snd_mixart_ids);
  69
  70
  71static int mixart_set_pipe_state(struct mixart_mgr *mgr,
  72                                 struct mixart_pipe *pipe, int start)
  73{
  74        struct mixart_group_state_req group_state;
  75        struct mixart_group_state_resp group_state_resp;
  76        struct mixart_msg request;
  77        int err;
  78        u32 system_msg_uid;
  79
  80        switch(pipe->status) {
  81        case PIPE_RUNNING:
  82        case PIPE_CLOCK_SET:
  83                if(start) return 0; /* already started */
  84                break;
  85        case PIPE_STOPPED:
  86                if(!start) return 0; /* already stopped */
  87                break;
  88        default:
  89                snd_printk(KERN_ERR "error mixart_set_pipe_state called with wrong pipe->status!\n");
  90                return -EINVAL;      /* function called with wrong pipe status */
  91        }
  92
  93        system_msg_uid = 0x12345678; /* the event ! (take care: the MSB and two LSB's have to be 0) */
  94
  95        /* wait on the last MSG_SYSTEM_SEND_SYNCHRO_CMD command to be really finished */
  96
  97        request.message_id = MSG_SYSTEM_WAIT_SYNCHRO_CMD;
  98        request.uid = (struct mixart_uid){0,0};
  99        request.data = &system_msg_uid;
 100        request.size = sizeof(system_msg_uid);
 101
 102        err = snd_mixart_send_msg_wait_notif(mgr, &request, system_msg_uid);
 103        if(err) {
 104                snd_printk(KERN_ERR "error : MSG_SYSTEM_WAIT_SYNCHRO_CMD was not notified !\n");
 105                return err;
 106        }
 107
 108        /* start or stop the pipe (1 pipe) */
 109
 110        memset(&group_state, 0, sizeof(group_state));
 111        group_state.pipe_count = 1;
 112        group_state.pipe_uid[0] = pipe->group_uid;
 113
 114        if(start)
 115                request.message_id = MSG_STREAM_START_STREAM_GRP_PACKET;
 116        else
 117                request.message_id = MSG_STREAM_STOP_STREAM_GRP_PACKET;
 118
 119        request.uid = pipe->group_uid; /*(struct mixart_uid){0,0};*/
 120        request.data = &group_state;
 121        request.size = sizeof(group_state);
 122
 123        err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
 124        if (err < 0 || group_state_resp.txx_status != 0) {
 125                snd_printk(KERN_ERR "error MSG_STREAM_ST***_STREAM_GRP_PACKET err=%x stat=%x !\n", err, group_state_resp.txx_status);
 126                return -EINVAL;
 127        }
 128
 129        if(start) {
 130                u32 stat;
 131
 132                group_state.pipe_count = 0; /* in case of start same command once again with pipe_count=0 */
 133
 134                err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
 135                if (err < 0 || group_state_resp.txx_status != 0) {
 136                        snd_printk(KERN_ERR "error MSG_STREAM_START_STREAM_GRP_PACKET err=%x stat=%x !\n", err, group_state_resp.txx_status);
 137                        return -EINVAL;
 138                }
 139
 140                /* in case of start send a synchro top */
 141
 142                request.message_id = MSG_SYSTEM_SEND_SYNCHRO_CMD;
 143                request.uid = (struct mixart_uid){0,0};
 144                request.data = NULL;
 145                request.size = 0;
 146
 147                err = snd_mixart_send_msg(mgr, &request, sizeof(stat), &stat);
 148                if (err < 0 || stat != 0) {
 149                        snd_printk(KERN_ERR "error MSG_SYSTEM_SEND_SYNCHRO_CMD err=%x stat=%x !\n", err, stat);
 150                        return -EINVAL;
 151                }
 152
 153                pipe->status = PIPE_RUNNING;
 154        }
 155        else /* !start */
 156                pipe->status = PIPE_STOPPED;
 157
 158        return 0;
 159}
 160
 161
 162static int mixart_set_clock(struct mixart_mgr *mgr,
 163                            struct mixart_pipe *pipe, unsigned int rate)
 164{
 165        struct mixart_msg request;
 166        struct mixart_clock_properties clock_properties;
 167        struct mixart_clock_properties_resp clock_prop_resp;
 168        int err;
 169
 170        switch(pipe->status) {
 171        case PIPE_CLOCK_SET:
 172                break;
 173        case PIPE_RUNNING:
 174                if(rate != 0)
 175                        break;
 176        default:
 177                if(rate == 0)
 178                        return 0; /* nothing to do */
 179                else {
 180                        snd_printk(KERN_ERR "error mixart_set_clock(%d) called with wrong pipe->status !\n", rate);
 181                        return -EINVAL;
 182                }
 183        }
 184
 185        memset(&clock_properties, 0, sizeof(clock_properties));
 186        clock_properties.clock_generic_type = (rate != 0) ? CGT_INTERNAL_CLOCK : CGT_NO_CLOCK;
 187        clock_properties.clock_mode = CM_STANDALONE;
 188        clock_properties.frequency = rate;
 189        clock_properties.nb_callers = 1; /* only one entry in uid_caller ! */
 190        clock_properties.uid_caller[0] = pipe->group_uid;
 191
 192        snd_printdd("mixart_set_clock to %d kHz\n", rate);
 193
 194        request.message_id = MSG_CLOCK_SET_PROPERTIES;
 195        request.uid = mgr->uid_console_manager;
 196        request.data = &clock_properties;
 197        request.size = sizeof(clock_properties);
 198
 199        err = snd_mixart_send_msg(mgr, &request, sizeof(clock_prop_resp), &clock_prop_resp);
 200        if (err < 0 || clock_prop_resp.status != 0 || clock_prop_resp.clock_mode != CM_STANDALONE) {
 201                snd_printk(KERN_ERR "error MSG_CLOCK_SET_PROPERTIES err=%x stat=%x mod=%x !\n", err, clock_prop_resp.status, clock_prop_resp.clock_mode);
 202                return -EINVAL;
 203        }
 204
 205        if(rate)  pipe->status = PIPE_CLOCK_SET;
 206        else      pipe->status = PIPE_RUNNING;
 207
 208        return 0;
 209}
 210
 211
 212/*
 213 *  Allocate or reference output pipe for analog IOs (pcmp0/1)
 214 */
 215struct mixart_pipe *
 216snd_mixart_add_ref_pipe(struct snd_mixart *chip, int pcm_number, int capture,
 217                        int monitoring)
 218{
 219        int stream_count;
 220        struct mixart_pipe *pipe;
 221        struct mixart_msg request;
 222
 223        if(capture) {
 224                if (pcm_number == MIXART_PCM_ANALOG) {
 225                        pipe = &(chip->pipe_in_ana);  /* analog inputs */
 226                } else {
 227                        pipe = &(chip->pipe_in_dig); /* digital inputs */
 228                }
 229                request.message_id = MSG_STREAM_ADD_OUTPUT_GROUP;
 230                stream_count = MIXART_CAPTURE_STREAMS;
 231        } else {
 232                if (pcm_number == MIXART_PCM_ANALOG) {
 233                        pipe = &(chip->pipe_out_ana);  /* analog outputs */
 234                } else {
 235                        pipe = &(chip->pipe_out_dig);  /* digital outputs */
 236                }
 237                request.message_id = MSG_STREAM_ADD_INPUT_GROUP;
 238                stream_count = MIXART_PLAYBACK_STREAMS;
 239        }
 240
 241        /* a new stream is opened and there are already all streams in use */
 242        if( (monitoring == 0) && (pipe->references >= stream_count) ) {
 243                return NULL;
 244        }
 245
 246        /* pipe is not yet defined */
 247        if( pipe->status == PIPE_UNDEFINED ) {
 248                int err, i;
 249                struct {
 250                        struct mixart_streaming_group_req sgroup_req;
 251                        struct mixart_streaming_group sgroup_resp;
 252                } *buf;
 253
 254                snd_printdd("add_ref_pipe audio chip(%d) pcm(%d)\n", chip->chip_idx, pcm_number);
 255
 256                buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 257                if (!buf)
 258                        return NULL;
 259
 260                request.uid = (struct mixart_uid){0,0};      /* should be StreamManagerUID, but zero is OK if there is only one ! */
 261                request.data = &buf->sgroup_req;
 262                request.size = sizeof(buf->sgroup_req);
 263
 264                memset(&buf->sgroup_req, 0, sizeof(buf->sgroup_req));
 265
 266                buf->sgroup_req.stream_count = stream_count;
 267                buf->sgroup_req.channel_count = 2;
 268                buf->sgroup_req.latency = 256;
 269                buf->sgroup_req.connector = pipe->uid_left_connector;  /* the left connector */
 270
 271                for (i=0; i<stream_count; i++) {
 272                        int j;
 273                        struct mixart_flowinfo *flowinfo;
 274                        struct mixart_bufferinfo *bufferinfo;
 275                        
 276                        /* we don't yet know the format, so config 16 bit pcm audio for instance */
 277                        buf->sgroup_req.stream_info[i].size_max_byte_frame = 1024;
 278                        buf->sgroup_req.stream_info[i].size_max_sample_frame = 256;
 279                        buf->sgroup_req.stream_info[i].nb_bytes_max_per_sample = MIXART_FLOAT_P__4_0_TO_HEX; /* is 4.0f */
 280
 281                        /* find the right bufferinfo_array */
 282                        j = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (pcm_number * (MIXART_PLAYBACK_STREAMS + MIXART_CAPTURE_STREAMS)) + i;
 283                        if(capture) j += MIXART_PLAYBACK_STREAMS; /* in the array capture is behind playback */
 284
 285                        buf->sgroup_req.flow_entry[i] = j;
 286
 287                        flowinfo = (struct mixart_flowinfo *)chip->mgr->flowinfo.area;
 288                        flowinfo[j].bufferinfo_array_phy_address = (u32)chip->mgr->bufferinfo.addr + (j * sizeof(struct mixart_bufferinfo));
 289                        flowinfo[j].bufferinfo_count = 1;               /* 1 will set the miXart to ring-buffer mode ! */
 290
 291                        bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
 292                        bufferinfo[j].buffer_address = 0;               /* buffer is not yet allocated */
 293                        bufferinfo[j].available_length = 0;             /* buffer is not yet allocated */
 294
 295                        /* construct the identifier of the stream buffer received in the interrupts ! */
 296                        bufferinfo[j].buffer_id = (chip->chip_idx << MIXART_NOTIFY_CARD_OFFSET) + (pcm_number << MIXART_NOTIFY_PCM_OFFSET ) + i;
 297                        if(capture) {
 298                                bufferinfo[j].buffer_id |= MIXART_NOTIFY_CAPT_MASK;
 299                        }
 300                }
 301
 302                err = snd_mixart_send_msg(chip->mgr, &request, sizeof(buf->sgroup_resp), &buf->sgroup_resp);
 303                if((err < 0) || (buf->sgroup_resp.status != 0)) {
 304                        snd_printk(KERN_ERR "error MSG_STREAM_ADD_**PUT_GROUP err=%x stat=%x !\n", err, buf->sgroup_resp.status);
 305                        kfree(buf);
 306                        return NULL;
 307                }
 308
 309                pipe->group_uid = buf->sgroup_resp.group;     /* id of the pipe, as returned by embedded */
 310                pipe->stream_count = buf->sgroup_resp.stream_count;
 311                /* pipe->stream_uid[i] = buf->sgroup_resp.stream[i].stream_uid; */
 312
 313                pipe->status = PIPE_STOPPED;
 314                kfree(buf);
 315        }
 316
 317        if(monitoring)  pipe->monitoring = 1;
 318        else            pipe->references++;
 319
 320        return pipe;
 321}
 322
 323
 324int snd_mixart_kill_ref_pipe(struct mixart_mgr *mgr,
 325                             struct mixart_pipe *pipe, int monitoring)
 326{
 327        int err = 0;
 328
 329        if(pipe->status == PIPE_UNDEFINED)
 330                return 0;
 331
 332        if(monitoring)
 333                pipe->monitoring = 0;
 334        else
 335                pipe->references--;
 336
 337        if((pipe->references <= 0) && (pipe->monitoring == 0)) {
 338
 339                struct mixart_msg request;
 340                struct mixart_delete_group_resp delete_resp;
 341
 342                /* release the clock */
 343                err = mixart_set_clock( mgr, pipe, 0);
 344                if( err < 0 ) {
 345                        snd_printk(KERN_ERR "mixart_set_clock(0) return error!\n");
 346                }
 347
 348                /* stop the pipe */
 349                err = mixart_set_pipe_state(mgr, pipe, 0);
 350                if( err < 0 ) {
 351                        snd_printk(KERN_ERR "error stopping pipe!\n");
 352                }
 353
 354                request.message_id = MSG_STREAM_DELETE_GROUP;
 355                request.uid = (struct mixart_uid){0,0};
 356                request.data = &pipe->group_uid;            /* the streaming group ! */
 357                request.size = sizeof(pipe->group_uid);
 358
 359                /* delete the pipe */
 360                err = snd_mixart_send_msg(mgr, &request, sizeof(delete_resp), &delete_resp);
 361                if ((err < 0) || (delete_resp.status != 0)) {
 362                        snd_printk(KERN_ERR "error MSG_STREAM_DELETE_GROUP err(%x), status(%x)\n", err, delete_resp.status);
 363                }
 364
 365                pipe->group_uid = (struct mixart_uid){0,0};
 366                pipe->stream_count = 0;
 367                pipe->status = PIPE_UNDEFINED;
 368        }
 369
 370        return err;
 371}
 372
 373static int mixart_set_stream_state(struct mixart_stream *stream, int start)
 374{
 375        struct snd_mixart *chip;
 376        struct mixart_stream_state_req stream_state_req;
 377        struct mixart_msg request;
 378
 379        if(!stream->substream)
 380                return -EINVAL;
 381
 382        memset(&stream_state_req, 0, sizeof(stream_state_req));
 383        stream_state_req.stream_count = 1;
 384        stream_state_req.stream_info.stream_desc.uid_pipe = stream->pipe->group_uid;
 385        stream_state_req.stream_info.stream_desc.stream_idx = stream->substream->number;
 386
 387        if (stream->substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 388                request.message_id = start ? MSG_STREAM_START_INPUT_STAGE_PACKET : MSG_STREAM_STOP_INPUT_STAGE_PACKET;
 389        else
 390                request.message_id = start ? MSG_STREAM_START_OUTPUT_STAGE_PACKET : MSG_STREAM_STOP_OUTPUT_STAGE_PACKET;
 391
 392        request.uid = (struct mixart_uid){0,0};
 393        request.data = &stream_state_req;
 394        request.size = sizeof(stream_state_req);
 395
 396        stream->abs_period_elapsed = 0;            /* reset stream pos      */
 397        stream->buf_periods = 0;
 398        stream->buf_period_frag = 0;
 399
 400        chip = snd_pcm_substream_chip(stream->substream);
 401
 402        return snd_mixart_send_msg_nonblock(chip->mgr, &request);
 403}
 404
 405/*
 406 *  Trigger callback
 407 */
 408
 409static int snd_mixart_trigger(struct snd_pcm_substream *subs, int cmd)
 410{
 411        struct mixart_stream *stream = subs->runtime->private_data;
 412
 413        switch (cmd) {
 414        case SNDRV_PCM_TRIGGER_START:
 415
 416                snd_printdd("SNDRV_PCM_TRIGGER_START\n");
 417
 418                /* START_STREAM */
 419                if( mixart_set_stream_state(stream, 1) )
 420                        return -EINVAL;
 421
 422                stream->status = MIXART_STREAM_STATUS_RUNNING;
 423
 424                break;
 425        case SNDRV_PCM_TRIGGER_STOP:
 426
 427                /* STOP_STREAM */
 428                if( mixart_set_stream_state(stream, 0) )
 429                        return -EINVAL;
 430
 431                stream->status = MIXART_STREAM_STATUS_OPEN;
 432
 433                snd_printdd("SNDRV_PCM_TRIGGER_STOP\n");
 434
 435                break;
 436
 437        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 438                /* TODO */
 439                stream->status = MIXART_STREAM_STATUS_PAUSE;
 440                snd_printdd("SNDRV_PCM_PAUSE_PUSH\n");
 441                break;
 442        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 443                /* TODO */
 444                stream->status = MIXART_STREAM_STATUS_RUNNING;
 445                snd_printdd("SNDRV_PCM_PAUSE_RELEASE\n");
 446                break;
 447        default:
 448                return -EINVAL;
 449        }
 450        return 0;
 451}
 452
 453static int mixart_sync_nonblock_events(struct mixart_mgr *mgr)
 454{
 455        unsigned long timeout = jiffies + HZ;
 456        while (atomic_read(&mgr->msg_processed) > 0) {
 457                if (time_after(jiffies, timeout)) {
 458                        snd_printk(KERN_ERR "mixart: cannot process nonblock events!\n");
 459                        return -EBUSY;
 460                }
 461                schedule_timeout_uninterruptible(1);
 462        }
 463        return 0;
 464}
 465
 466/*
 467 *  prepare callback for all pcms
 468 */
 469static int snd_mixart_prepare(struct snd_pcm_substream *subs)
 470{
 471        struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 472        struct mixart_stream *stream = subs->runtime->private_data;
 473
 474        /* TODO de façon non bloquante, réappliquer les hw_params (rate, bits, codec) */
 475
 476        snd_printdd("snd_mixart_prepare\n");
 477
 478        mixart_sync_nonblock_events(chip->mgr);
 479
 480        /* only the first stream can choose the sample rate */
 481        /* the further opened streams will be limited to its frequency (see open) */
 482        if(chip->mgr->ref_count_rate == 1)
 483                chip->mgr->sample_rate = subs->runtime->rate;
 484
 485        /* set the clock only once (first stream) on the same pipe */
 486        if(stream->pipe->references == 1) {
 487                if( mixart_set_clock(chip->mgr, stream->pipe, subs->runtime->rate) )
 488                        return -EINVAL;
 489        }
 490
 491        return 0;
 492}
 493
 494
 495static int mixart_set_format(struct mixart_stream *stream, snd_pcm_format_t format)
 496{
 497        int err;
 498        struct snd_mixart *chip;
 499        struct mixart_msg request;
 500        struct mixart_stream_param_desc stream_param;
 501        struct mixart_return_uid resp;
 502
 503        chip = snd_pcm_substream_chip(stream->substream);
 504
 505        memset(&stream_param, 0, sizeof(stream_param));
 506
 507        stream_param.coding_type = CT_LINEAR;
 508        stream_param.number_of_channel = stream->channels;
 509
 510        stream_param.sampling_freq = chip->mgr->sample_rate;
 511        if(stream_param.sampling_freq == 0)
 512                stream_param.sampling_freq = 44100; /* if frequency not yet defined, use some default */
 513
 514        switch(format){
 515        case SNDRV_PCM_FORMAT_U8:
 516                stream_param.sample_type = ST_INTEGER_8;
 517                stream_param.sample_size = 8;
 518                break;
 519        case SNDRV_PCM_FORMAT_S16_LE:
 520                stream_param.sample_type = ST_INTEGER_16LE;
 521                stream_param.sample_size = 16;
 522                break;
 523        case SNDRV_PCM_FORMAT_S16_BE:
 524                stream_param.sample_type = ST_INTEGER_16BE;
 525                stream_param.sample_size = 16;
 526                break;
 527        case SNDRV_PCM_FORMAT_S24_3LE:
 528                stream_param.sample_type = ST_INTEGER_24LE;
 529                stream_param.sample_size = 24;
 530                break;
 531        case SNDRV_PCM_FORMAT_S24_3BE:
 532                stream_param.sample_type = ST_INTEGER_24BE;
 533                stream_param.sample_size = 24;
 534                break;
 535        case SNDRV_PCM_FORMAT_FLOAT_LE:
 536                stream_param.sample_type = ST_FLOATING_POINT_32LE;
 537                stream_param.sample_size = 32;
 538                break;
 539        case  SNDRV_PCM_FORMAT_FLOAT_BE:
 540                stream_param.sample_type = ST_FLOATING_POINT_32BE;
 541                stream_param.sample_size = 32;
 542                break;
 543        default:
 544                snd_printk(KERN_ERR "error mixart_set_format() : unknown format\n");
 545                return -EINVAL;
 546        }
 547
 548        snd_printdd("set SNDRV_PCM_FORMAT sample_type(%d) sample_size(%d) freq(%d) channels(%d)\n",
 549                   stream_param.sample_type, stream_param.sample_size, stream_param.sampling_freq, stream->channels);
 550
 551        /* TODO: what else to configure ? */
 552        /* stream_param.samples_per_frame = 2; */
 553        /* stream_param.bytes_per_frame = 4; */
 554        /* stream_param.bytes_per_sample = 2; */
 555
 556        stream_param.pipe_count = 1;      /* set to 1 */
 557        stream_param.stream_count = 1;    /* set to 1 */
 558        stream_param.stream_desc[0].uid_pipe = stream->pipe->group_uid;
 559        stream_param.stream_desc[0].stream_idx = stream->substream->number;
 560
 561        request.message_id = MSG_STREAM_SET_INPUT_STAGE_PARAM;
 562        request.uid = (struct mixart_uid){0,0};
 563        request.data = &stream_param;
 564        request.size = sizeof(stream_param);
 565
 566        err = snd_mixart_send_msg(chip->mgr, &request, sizeof(resp), &resp);
 567        if((err < 0) || resp.error_code) {
 568                snd_printk(KERN_ERR "MSG_STREAM_SET_INPUT_STAGE_PARAM err=%x; resp=%x\n", err, resp.error_code);
 569                return -EINVAL;
 570        }
 571        return 0;
 572}
 573
 574
 575/*
 576 *  HW_PARAMS callback for all pcms
 577 */
 578static int snd_mixart_hw_params(struct snd_pcm_substream *subs,
 579                                struct snd_pcm_hw_params *hw)
 580{
 581        struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 582        struct mixart_mgr *mgr = chip->mgr;
 583        struct mixart_stream *stream = subs->runtime->private_data;
 584        snd_pcm_format_t format;
 585        int err;
 586        int channels;
 587
 588        /* set up channels */
 589        channels = params_channels(hw);
 590
 591        /*  set up format for the stream */
 592        format = params_format(hw);
 593
 594        mutex_lock(&mgr->setup_mutex);
 595
 596        /* update the stream levels */
 597        if( stream->pcm_number <= MIXART_PCM_DIGITAL ) {
 598                int is_aes = stream->pcm_number > MIXART_PCM_ANALOG;
 599                if( subs->stream == SNDRV_PCM_STREAM_PLAYBACK )
 600                        mixart_update_playback_stream_level(chip, is_aes, subs->number);
 601                else
 602                        mixart_update_capture_stream_level( chip, is_aes);
 603        }
 604
 605        stream->channels = channels;
 606
 607        /* set the format to the board */
 608        err = mixart_set_format(stream, format);
 609        if(err < 0) {
 610                mutex_unlock(&mgr->setup_mutex);
 611                return err;
 612        }
 613
 614        /* allocate buffer */
 615        err = snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw));
 616
 617        if (err > 0) {
 618                struct mixart_bufferinfo *bufferinfo;
 619                int i = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (stream->pcm_number * (MIXART_PLAYBACK_STREAMS+MIXART_CAPTURE_STREAMS)) + subs->number;
 620                if( subs->stream == SNDRV_PCM_STREAM_CAPTURE ) {
 621                        i += MIXART_PLAYBACK_STREAMS; /* in array capture is behind playback */
 622                }
 623                
 624                bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
 625                bufferinfo[i].buffer_address = subs->runtime->dma_addr;
 626                bufferinfo[i].available_length = subs->runtime->dma_bytes;
 627                /* bufferinfo[i].buffer_id  is already defined */
 628
 629                snd_printdd("snd_mixart_hw_params(pcm %d) : dma_addr(%x) dma_bytes(%x) subs-number(%d)\n", i,
 630                                bufferinfo[i].buffer_address,
 631                                bufferinfo[i].available_length,
 632                                subs->number);
 633        }
 634        mutex_unlock(&mgr->setup_mutex);
 635
 636        return err;
 637}
 638
 639static int snd_mixart_hw_free(struct snd_pcm_substream *subs)
 640{
 641        struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 642        snd_pcm_lib_free_pages(subs);
 643        mixart_sync_nonblock_events(chip->mgr);
 644        return 0;
 645}
 646
 647
 648
 649/*
 650 *  TODO CONFIGURATION SPACE for all pcms, mono pcm must update channels_max
 651 */
 652static struct snd_pcm_hardware snd_mixart_analog_caps =
 653{
 654        .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 655                              SNDRV_PCM_INFO_MMAP_VALID |
 656                              SNDRV_PCM_INFO_PAUSE),
 657        .formats          = ( SNDRV_PCM_FMTBIT_U8 |
 658                              SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
 659                              SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
 660                              SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
 661        .rates            = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 662        .rate_min         = 8000,
 663        .rate_max         = 48000,
 664        .channels_min     = 1,
 665        .channels_max     = 2,
 666        .buffer_bytes_max = (32*1024),
 667        .period_bytes_min = 256,                  /* 256 frames U8 mono*/
 668        .period_bytes_max = (16*1024),
 669        .periods_min      = 2,
 670        .periods_max      = (32*1024/256),
 671};
 672
 673static struct snd_pcm_hardware snd_mixart_digital_caps =
 674{
 675        .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 676                              SNDRV_PCM_INFO_MMAP_VALID |
 677                              SNDRV_PCM_INFO_PAUSE),
 678        .formats          = ( SNDRV_PCM_FMTBIT_U8 |
 679                              SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
 680                              SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
 681                              SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
 682        .rates            = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
 683        .rate_min         = 32000,
 684        .rate_max         = 48000,
 685        .channels_min     = 1,
 686        .channels_max     = 2,
 687        .buffer_bytes_max = (32*1024),
 688        .period_bytes_min = 256,                  /* 256 frames U8 mono*/
 689        .period_bytes_max = (16*1024),
 690        .periods_min      = 2,
 691        .periods_max      = (32*1024/256),
 692};
 693
 694
 695static int snd_mixart_playback_open(struct snd_pcm_substream *subs)
 696{
 697        struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
 698        struct mixart_mgr        *mgr = chip->mgr;
 699        struct snd_pcm_runtime *runtime = subs->runtime;
 700        struct snd_pcm *pcm = subs->pcm;
 701        struct mixart_stream     *stream;
 702        struct mixart_pipe       *pipe;
 703        int err = 0;
 704        int pcm_number;
 705
 706        mutex_lock(&mgr->setup_mutex);
 707
 708        if ( pcm == chip->pcm ) {
 709                pcm_number = MIXART_PCM_ANALOG;
 710                runtime->hw = snd_mixart_analog_caps;
 711        } else {
 712                snd_BUG_ON(pcm != chip->pcm_dig);
 713                pcm_number = MIXART_PCM_DIGITAL;
 714                runtime->hw = snd_mixart_digital_caps;
 715        }
 716        snd_printdd("snd_mixart_playback_open C%d/P%d/Sub%d\n", chip->chip_idx, pcm_number, subs->number);
 717
 718        /* get stream info */
 719        stream = &(chip->playback_stream[pcm_number][subs->number]);
 720
 721        if (stream->status != MIXART_STREAM_STATUS_FREE){
 722                /* streams in use */
 723                snd_printk(KERN_ERR "snd_mixart_playback_open C%d/P%d/Sub%d in use\n", chip->chip_idx, pcm_number, subs->number);
 724                err = -EBUSY;
 725                goto _exit_open;
 726        }
 727
 728        /* get pipe pointer (out pipe) */
 729        pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 0, 0);
 730
 731        if (pipe == NULL) {
 732                err = -EINVAL;
 733                goto _exit_open;
 734        }
 735
 736        /* start the pipe if necessary */
 737        err = mixart_set_pipe_state(chip->mgr, pipe, 1);
 738        if( err < 0 ) {
 739                snd_printk(KERN_ERR "error starting pipe!\n");
 740                snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
 741                err = -EINVAL;
 742                goto _exit_open;
 743        }
 744
 745        stream->pipe        = pipe;
 746        stream->pcm_number  = pcm_number;
 747        stream->status      = MIXART_STREAM_STATUS_OPEN;
 748        stream->substream   = subs;
 749        stream->channels    = 0; /* not configured yet */
 750
 751        runtime->private_data = stream;
 752
 753        snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 754        snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
 755
 756        /* if a sample rate is already used, another stream cannot change */
 757        if(mgr->ref_count_rate++) {
 758                if(mgr->sample_rate) {
 759                        runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
 760                }
 761        }
 762
 763 _exit_open:
 764        mutex_unlock(&mgr->setup_mutex);
 765
 766        return err;
 767}
 768
 769
 770static int snd_mixart_capture_open(struct snd_pcm_substream *subs)
 771{
 772        struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
 773        struct mixart_mgr        *mgr = chip->mgr;
 774        struct snd_pcm_runtime *runtime = subs->runtime;
 775        struct snd_pcm *pcm = subs->pcm;
 776        struct mixart_stream     *stream;
 777        struct mixart_pipe       *pipe;
 778        int err = 0;
 779        int pcm_number;
 780
 781        mutex_lock(&mgr->setup_mutex);
 782
 783        if ( pcm == chip->pcm ) {
 784                pcm_number = MIXART_PCM_ANALOG;
 785                runtime->hw = snd_mixart_analog_caps;
 786        } else {
 787                snd_BUG_ON(pcm != chip->pcm_dig);
 788                pcm_number = MIXART_PCM_DIGITAL;
 789                runtime->hw = snd_mixart_digital_caps;
 790        }
 791
 792        runtime->hw.channels_min = 2; /* for instance, no mono */
 793
 794        snd_printdd("snd_mixart_capture_open C%d/P%d/Sub%d\n", chip->chip_idx, pcm_number, subs->number);
 795
 796        /* get stream info */
 797        stream = &(chip->capture_stream[pcm_number]);
 798
 799        if (stream->status != MIXART_STREAM_STATUS_FREE){
 800                /* streams in use */
 801                snd_printk(KERN_ERR "snd_mixart_capture_open C%d/P%d/Sub%d in use\n", chip->chip_idx, pcm_number, subs->number);
 802                err = -EBUSY;
 803                goto _exit_open;
 804        }
 805
 806        /* get pipe pointer (in pipe) */
 807        pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 1, 0);
 808
 809        if (pipe == NULL) {
 810                err = -EINVAL;
 811                goto _exit_open;
 812        }
 813
 814        /* start the pipe if necessary */
 815        err = mixart_set_pipe_state(chip->mgr, pipe, 1);
 816        if( err < 0 ) {
 817                snd_printk(KERN_ERR "error starting pipe!\n");
 818                snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
 819                err = -EINVAL;
 820                goto _exit_open;
 821        }
 822
 823        stream->pipe        = pipe;
 824        stream->pcm_number  = pcm_number;
 825        stream->status      = MIXART_STREAM_STATUS_OPEN;
 826        stream->substream   = subs;
 827        stream->channels    = 0; /* not configured yet */
 828
 829        runtime->private_data = stream;
 830
 831        snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 832        snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
 833
 834        /* if a sample rate is already used, another stream cannot change */
 835        if(mgr->ref_count_rate++) {
 836                if(mgr->sample_rate) {
 837                        runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
 838                }
 839        }
 840
 841 _exit_open:
 842        mutex_unlock(&mgr->setup_mutex);
 843
 844        return err;
 845}
 846
 847
 848
 849static int snd_mixart_close(struct snd_pcm_substream *subs)
 850{
 851        struct snd_mixart *chip = snd_pcm_substream_chip(subs);
 852        struct mixart_mgr *mgr = chip->mgr;
 853        struct mixart_stream *stream = subs->runtime->private_data;
 854
 855        mutex_lock(&mgr->setup_mutex);
 856
 857        snd_printdd("snd_mixart_close C%d/P%d/Sub%d\n", chip->chip_idx, stream->pcm_number, subs->number);
 858
 859        /* sample rate released */
 860        if(--mgr->ref_count_rate == 0) {
 861                mgr->sample_rate = 0;
 862        }
 863
 864        /* delete pipe */
 865        if (snd_mixart_kill_ref_pipe(mgr, stream->pipe, 0 ) < 0) {
 866
 867                snd_printk(KERN_ERR "error snd_mixart_kill_ref_pipe C%dP%d\n", chip->chip_idx, stream->pcm_number);
 868        }
 869
 870        stream->pipe      = NULL;
 871        stream->status    = MIXART_STREAM_STATUS_FREE;
 872        stream->substream = NULL;
 873
 874        mutex_unlock(&mgr->setup_mutex);
 875        return 0;
 876}
 877
 878
 879static snd_pcm_uframes_t snd_mixart_stream_pointer(struct snd_pcm_substream *subs)
 880{
 881        struct snd_pcm_runtime *runtime = subs->runtime;
 882        struct mixart_stream   *stream  = runtime->private_data;
 883
 884        return (snd_pcm_uframes_t)((stream->buf_periods * runtime->period_size) + stream->buf_period_frag);
 885}
 886
 887
 888
 889static struct snd_pcm_ops snd_mixart_playback_ops = {
 890        .open      = snd_mixart_playback_open,
 891        .close     = snd_mixart_close,
 892        .ioctl     = snd_pcm_lib_ioctl,
 893        .prepare   = snd_mixart_prepare,
 894        .hw_params = snd_mixart_hw_params,
 895        .hw_free   = snd_mixart_hw_free,
 896        .trigger   = snd_mixart_trigger,
 897        .pointer   = snd_mixart_stream_pointer,
 898};
 899
 900static struct snd_pcm_ops snd_mixart_capture_ops = {
 901        .open      = snd_mixart_capture_open,
 902        .close     = snd_mixart_close,
 903        .ioctl     = snd_pcm_lib_ioctl,
 904        .prepare   = snd_mixart_prepare,
 905        .hw_params = snd_mixart_hw_params,
 906        .hw_free   = snd_mixart_hw_free,
 907        .trigger   = snd_mixart_trigger,
 908        .pointer   = snd_mixart_stream_pointer,
 909};
 910
 911static void preallocate_buffers(struct snd_mixart *chip, struct snd_pcm *pcm)
 912{
 913#if 0
 914        struct snd_pcm_substream *subs;
 915        int stream;
 916
 917        for (stream = 0; stream < 2; stream++) {
 918                int idx = 0;
 919                for (subs = pcm->streams[stream].substream; subs; subs = subs->next, idx++)
 920                        /* set up the unique device id with the chip index */
 921                        subs->dma_device.id = subs->pcm->device << 16 |
 922                                subs->stream << 8 | (subs->number + 1) |
 923                                (chip->chip_idx + 1) << 24;
 924        }
 925#endif
 926        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 927                                              snd_dma_pci_data(chip->mgr->pci), 32*1024, 32*1024);
 928}
 929
 930/*
 931 */
 932static int snd_mixart_pcm_analog(struct snd_mixart *chip)
 933{
 934        int err;
 935        struct snd_pcm *pcm;
 936        char name[32];
 937
 938        sprintf(name, "miXart analog %d", chip->chip_idx);
 939        if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_ANALOG,
 940                               MIXART_PLAYBACK_STREAMS,
 941                               MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
 942                snd_printk(KERN_ERR "cannot create the analog pcm %d\n", chip->chip_idx);
 943                return err;
 944        }
 945
 946        pcm->private_data = chip;
 947
 948        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
 949        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
 950
 951        pcm->info_flags = 0;
 952        strcpy(pcm->name, name);
 953
 954        preallocate_buffers(chip, pcm);
 955
 956        chip->pcm = pcm;
 957        return 0;
 958}
 959
 960
 961/*
 962 */
 963static int snd_mixart_pcm_digital(struct snd_mixart *chip)
 964{
 965        int err;
 966        struct snd_pcm *pcm;
 967        char name[32];
 968
 969        sprintf(name, "miXart AES/EBU %d", chip->chip_idx);
 970        if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_DIGITAL,
 971                               MIXART_PLAYBACK_STREAMS,
 972                               MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
 973                snd_printk(KERN_ERR "cannot create the digital pcm %d\n", chip->chip_idx);
 974                return err;
 975        }
 976
 977        pcm->private_data = chip;
 978
 979        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
 980        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
 981
 982        pcm->info_flags = 0;
 983        strcpy(pcm->name, name);
 984
 985        preallocate_buffers(chip, pcm);
 986
 987        chip->pcm_dig = pcm;
 988        return 0;
 989}
 990
 991static int snd_mixart_chip_free(struct snd_mixart *chip)
 992{
 993        kfree(chip);
 994        return 0;
 995}
 996
 997static int snd_mixart_chip_dev_free(struct snd_device *device)
 998{
 999        struct snd_mixart *chip = device->device_data;
1000        return snd_mixart_chip_free(chip);
1001}
1002
1003
1004/*
1005 */
1006static int __devinit snd_mixart_create(struct mixart_mgr *mgr, struct snd_card *card, int idx)
1007{
1008        int err;
1009        struct snd_mixart *chip;
1010        static struct snd_device_ops ops = {
1011                .dev_free = snd_mixart_chip_dev_free,
1012        };
1013
1014        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1015        if (! chip) {
1016                snd_printk(KERN_ERR "cannot allocate chip\n");
1017                return -ENOMEM;
1018        }
1019
1020        chip->card = card;
1021        chip->chip_idx = idx;
1022        chip->mgr = mgr;
1023
1024        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1025                snd_mixart_chip_free(chip);
1026                return err;
1027        }
1028
1029        mgr->chip[idx] = chip;
1030        snd_card_set_dev(card, &mgr->pci->dev);
1031
1032        return 0;
1033}
1034
1035int snd_mixart_create_pcm(struct snd_mixart* chip)
1036{
1037        int err;
1038
1039        err = snd_mixart_pcm_analog(chip);
1040        if (err < 0)
1041                return err;
1042
1043        if(chip->mgr->board_type == MIXART_DAUGHTER_TYPE_AES) {
1044
1045                err = snd_mixart_pcm_digital(chip);
1046                if (err < 0)
1047                        return err;
1048        }
1049        return err;
1050}
1051
1052
1053/*
1054 * release all the cards assigned to a manager instance
1055 */
1056static int snd_mixart_free(struct mixart_mgr *mgr)
1057{
1058        unsigned int i;
1059
1060        for (i = 0; i < mgr->num_cards; i++) {
1061                if (mgr->chip[i])
1062                        snd_card_free(mgr->chip[i]->card);
1063        }
1064
1065        /* stop mailbox */
1066        snd_mixart_exit_mailbox(mgr);
1067
1068        /* release irq  */
1069        if (mgr->irq >= 0)
1070                free_irq(mgr->irq, mgr);
1071
1072        /* reset board if some firmware was loaded */
1073        if(mgr->dsp_loaded) {
1074                snd_mixart_reset_board(mgr);
1075                snd_printdd("reset miXart !\n");
1076        }
1077
1078        /* release the i/o ports */
1079        for (i = 0; i < 2; i++) {
1080                if (mgr->mem[i].virt)
1081                        iounmap(mgr->mem[i].virt);
1082        }
1083        pci_release_regions(mgr->pci);
1084
1085        /* free flowarray */
1086        if(mgr->flowinfo.area) {
1087                snd_dma_free_pages(&mgr->flowinfo);
1088                mgr->flowinfo.area = NULL;
1089        }
1090        /* free bufferarray */
1091        if(mgr->bufferinfo.area) {
1092                snd_dma_free_pages(&mgr->bufferinfo);
1093                mgr->bufferinfo.area = NULL;
1094        }
1095
1096        pci_disable_device(mgr->pci);
1097        kfree(mgr);
1098        return 0;
1099}
1100
1101/*
1102 * proc interface
1103 */
1104static long long snd_mixart_BA0_llseek(struct snd_info_entry *entry,
1105                                       void *private_file_data,
1106                                       struct file *file,
1107                                       long long offset,
1108                                       int orig)
1109{
1110        offset = offset & ~3; /* 4 bytes aligned */
1111
1112        switch(orig) {
1113        case SEEK_SET:
1114                file->f_pos = offset;
1115                break;
1116        case SEEK_CUR:
1117                file->f_pos += offset;
1118                break;
1119        case SEEK_END: /* offset is negative */
1120                file->f_pos = MIXART_BA0_SIZE + offset;
1121                break;
1122        default:
1123                return -EINVAL;
1124        }
1125        if(file->f_pos > MIXART_BA0_SIZE)
1126                file->f_pos = MIXART_BA0_SIZE;
1127        return file->f_pos;
1128}
1129
1130static long long snd_mixart_BA1_llseek(struct snd_info_entry *entry,
1131                                       void *private_file_data,
1132                                       struct file *file,
1133                                       long long offset,
1134                                       int orig)
1135{
1136        offset = offset & ~3; /* 4 bytes aligned */
1137
1138        switch(orig) {
1139        case SEEK_SET:
1140                file->f_pos = offset;
1141                break;
1142        case SEEK_CUR:
1143                file->f_pos += offset;
1144                break;
1145        case SEEK_END: /* offset is negative */
1146                file->f_pos = MIXART_BA1_SIZE + offset;
1147                break;
1148        default:
1149                return -EINVAL;
1150        }
1151        if(file->f_pos > MIXART_BA1_SIZE)
1152                file->f_pos = MIXART_BA1_SIZE;
1153        return file->f_pos;
1154}
1155
1156/*
1157  mixart_BA0 proc interface for BAR 0 - read callback
1158 */
1159static long snd_mixart_BA0_read(struct snd_info_entry *entry, void *file_private_data,
1160                                struct file *file, char __user *buf,
1161                                unsigned long count, unsigned long pos)
1162{
1163        struct mixart_mgr *mgr = entry->private_data;
1164
1165        count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1166        if(count <= 0)
1167                return 0;
1168        if(pos + count > MIXART_BA0_SIZE)
1169                count = (long)(MIXART_BA0_SIZE - pos);
1170        if(copy_to_user_fromio(buf, MIXART_MEM( mgr, pos ), count))
1171                return -EFAULT;
1172        return count;
1173}
1174
1175/*
1176  mixart_BA1 proc interface for BAR 1 - read callback
1177 */
1178static long snd_mixart_BA1_read(struct snd_info_entry *entry, void *file_private_data,
1179                                struct file *file, char __user *buf,
1180                                unsigned long count, unsigned long pos)
1181{
1182        struct mixart_mgr *mgr = entry->private_data;
1183
1184        count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1185        if(count <= 0)
1186                return 0;
1187        if(pos + count > MIXART_BA1_SIZE)
1188                count = (long)(MIXART_BA1_SIZE - pos);
1189        if(copy_to_user_fromio(buf, MIXART_REG( mgr, pos ), count))
1190                return -EFAULT;
1191        return count;
1192}
1193
1194static struct snd_info_entry_ops snd_mixart_proc_ops_BA0 = {
1195        .read   = snd_mixart_BA0_read,
1196        .llseek = snd_mixart_BA0_llseek
1197};
1198
1199static struct snd_info_entry_ops snd_mixart_proc_ops_BA1 = {
1200        .read   = snd_mixart_BA1_read,
1201        .llseek = snd_mixart_BA1_llseek
1202};
1203
1204
1205static void snd_mixart_proc_read(struct snd_info_entry *entry, 
1206                                 struct snd_info_buffer *buffer)
1207{
1208        struct snd_mixart *chip = entry->private_data;        
1209        u32 ref; 
1210
1211        snd_iprintf(buffer, "Digigram miXart (alsa card %d)\n\n", chip->chip_idx);
1212
1213        /* stats available when embedded OS is running */
1214        if (chip->mgr->dsp_loaded & ( 1 << MIXART_MOTHERBOARD_ELF_INDEX)) {
1215                snd_iprintf(buffer, "- hardware -\n");
1216                switch (chip->mgr->board_type ) {
1217                case MIXART_DAUGHTER_TYPE_NONE     : snd_iprintf(buffer, "\tmiXart8 (no daughter board)\n\n"); break;
1218                case MIXART_DAUGHTER_TYPE_AES      : snd_iprintf(buffer, "\tmiXart8 AES/EBU\n\n"); break;
1219                case MIXART_DAUGHTER_TYPE_COBRANET : snd_iprintf(buffer, "\tmiXart8 Cobranet\n\n"); break;
1220                default:                             snd_iprintf(buffer, "\tUNKNOWN!\n\n"); break;
1221                }
1222
1223                snd_iprintf(buffer, "- system load -\n");        
1224
1225                /* get perf reference */
1226
1227                ref = readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_SYSTEM_LOAD_OFFSET));
1228
1229                if (ref) {
1230                        u32 mailbox   = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_MAILBX_LOAD_OFFSET)) / ref;
1231                        u32 streaming = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_STREAM_LOAD_OFFSET)) / ref;
1232                        u32 interr    = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_INTERR_LOAD_OFFSET)) / ref;
1233
1234                        snd_iprintf(buffer, "\tstreaming          : %d\n", streaming);
1235                        snd_iprintf(buffer, "\tmailbox            : %d\n", mailbox);
1236                        snd_iprintf(buffer, "\tinterrups handling : %d\n\n", interr);
1237                }
1238        } /* endif elf loaded */
1239}
1240
1241static void __devinit snd_mixart_proc_init(struct snd_mixart *chip)
1242{
1243        struct snd_info_entry *entry;
1244
1245        /* text interface to read perf and temp meters */
1246        if (! snd_card_proc_new(chip->card, "board_info", &entry)) {
1247                entry->private_data = chip;
1248                entry->c.text.read = snd_mixart_proc_read;
1249        }
1250
1251        if (! snd_card_proc_new(chip->card, "mixart_BA0", &entry)) {
1252                entry->content = SNDRV_INFO_CONTENT_DATA;
1253                entry->private_data = chip->mgr;        
1254                entry->c.ops = &snd_mixart_proc_ops_BA0;
1255                entry->size = MIXART_BA0_SIZE;
1256        }
1257        if (! snd_card_proc_new(chip->card, "mixart_BA1", &entry)) {
1258                entry->content = SNDRV_INFO_CONTENT_DATA;
1259                entry->private_data = chip->mgr;
1260                entry->c.ops = &snd_mixart_proc_ops_BA1;
1261                entry->size = MIXART_BA1_SIZE;
1262        }
1263}
1264/* end of proc interface */
1265
1266
1267/*
1268 *    probe function - creates the card manager
1269 */
1270static int __devinit snd_mixart_probe(struct pci_dev *pci,
1271                                      const struct pci_device_id *pci_id)
1272{
1273        static int dev;
1274        struct mixart_mgr *mgr;
1275        unsigned int i;
1276        int err;
1277        size_t size;
1278
1279        /*
1280         */
1281        if (dev >= SNDRV_CARDS)
1282                return -ENODEV;
1283        if (! enable[dev]) {
1284                dev++;
1285                return -ENOENT;
1286        }
1287
1288        /* enable PCI device */
1289        if ((err = pci_enable_device(pci)) < 0)
1290                return err;
1291        pci_set_master(pci);
1292
1293        /* check if we can restrict PCI DMA transfers to 32 bits */
1294        if (pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0) {
1295                snd_printk(KERN_ERR "architecture does not support 32bit PCI busmaster DMA\n");
1296                pci_disable_device(pci);
1297                return -ENXIO;
1298        }
1299
1300        /*
1301         */
1302        mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1303        if (! mgr) {
1304                pci_disable_device(pci);
1305                return -ENOMEM;
1306        }
1307
1308        mgr->pci = pci;
1309        mgr->irq = -1;
1310
1311        /* resource assignment */
1312        if ((err = pci_request_regions(pci, CARD_NAME)) < 0) {
1313                kfree(mgr);
1314                pci_disable_device(pci);
1315                return err;
1316        }
1317        for (i = 0; i < 2; i++) {
1318                mgr->mem[i].phys = pci_resource_start(pci, i);
1319                mgr->mem[i].virt = pci_ioremap_bar(pci, i);
1320                if (!mgr->mem[i].virt) {
1321                        printk(KERN_ERR "unable to remap resource 0x%lx\n",
1322                               mgr->mem[i].phys);
1323                        snd_mixart_free(mgr);
1324                        return -EBUSY;
1325                }
1326        }
1327
1328        if (request_irq(pci->irq, snd_mixart_interrupt, IRQF_SHARED,
1329                        CARD_NAME, mgr)) {
1330                snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1331                snd_mixart_free(mgr);
1332                return -EBUSY;
1333        }
1334        mgr->irq = pci->irq;
1335
1336        sprintf(mgr->shortname, "Digigram miXart");
1337        sprintf(mgr->longname, "%s at 0x%lx & 0x%lx, irq %i", mgr->shortname, mgr->mem[0].phys, mgr->mem[1].phys, mgr->irq);
1338
1339        /* ISR spinlock  */
1340        spin_lock_init(&mgr->lock);
1341
1342        /* init mailbox  */
1343        mgr->msg_fifo_readptr = 0;
1344        mgr->msg_fifo_writeptr = 0;
1345
1346        spin_lock_init(&mgr->msg_lock);
1347        mutex_init(&mgr->msg_mutex);
1348        init_waitqueue_head(&mgr->msg_sleep);
1349        atomic_set(&mgr->msg_processed, 0);
1350
1351        /* init setup mutex*/
1352        mutex_init(&mgr->setup_mutex);
1353
1354        /* init message taslket */
1355        tasklet_init(&mgr->msg_taskq, snd_mixart_msg_tasklet, (unsigned long) mgr);
1356
1357        /* card assignment */
1358        mgr->num_cards = MIXART_MAX_CARDS; /* 4  FIXME: configurable? */
1359        for (i = 0; i < mgr->num_cards; i++) {
1360                struct snd_card *card;
1361                char tmpid[16];
1362                int idx;
1363
1364                if (index[dev] < 0)
1365                        idx = index[dev];
1366                else
1367                        idx = index[dev] + i;
1368                snprintf(tmpid, sizeof(tmpid), "%s-%d", id[dev] ? id[dev] : "MIXART", i);
1369                err = snd_card_create(idx, tmpid, THIS_MODULE, 0, &card);
1370
1371                if (err < 0) {
1372                        snd_printk(KERN_ERR "cannot allocate the card %d\n", i);
1373                        snd_mixart_free(mgr);
1374                        return err;
1375                }
1376
1377                strcpy(card->driver, CARD_NAME);
1378                sprintf(card->shortname, "%s [PCM #%d]", mgr->shortname, i);
1379                sprintf(card->longname, "%s [PCM #%d]", mgr->longname, i);
1380
1381                if ((err = snd_mixart_create(mgr, card, i)) < 0) {
1382                        snd_card_free(card);
1383                        snd_mixart_free(mgr);
1384                        return err;
1385                }
1386
1387                if(i==0) {
1388                        /* init proc interface only for chip0 */
1389                        snd_mixart_proc_init(mgr->chip[i]);
1390                }
1391
1392                if ((err = snd_card_register(card)) < 0) {
1393                        snd_mixart_free(mgr);
1394                        return err;
1395                }
1396        }
1397
1398        /* init firmware status (mgr->dsp_loaded reset in hwdep_new) */
1399        mgr->board_type = MIXART_DAUGHTER_TYPE_NONE;
1400
1401        /* create array of streaminfo */
1402        size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1403                            sizeof(struct mixart_flowinfo)) );
1404        if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1405                                size, &mgr->flowinfo) < 0) {
1406                snd_mixart_free(mgr);
1407                return -ENOMEM;
1408        }
1409        /* init streaminfo_array */
1410        memset(mgr->flowinfo.area, 0, size);
1411
1412        /* create array of bufferinfo */
1413        size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1414                            sizeof(struct mixart_bufferinfo)) );
1415        if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1416                                size, &mgr->bufferinfo) < 0) {
1417                snd_mixart_free(mgr);
1418                return -ENOMEM;
1419        }
1420        /* init bufferinfo_array */
1421        memset(mgr->bufferinfo.area, 0, size);
1422
1423        /* set up firmware */
1424        err = snd_mixart_setup_firmware(mgr);
1425        if (err < 0) {
1426                snd_mixart_free(mgr);
1427                return err;
1428        }
1429
1430        pci_set_drvdata(pci, mgr);
1431        dev++;
1432        return 0;
1433}
1434
1435static void __devexit snd_mixart_remove(struct pci_dev *pci)
1436{
1437        snd_mixart_free(pci_get_drvdata(pci));
1438        pci_set_drvdata(pci, NULL);
1439}
1440
1441static struct pci_driver driver = {
1442        .name = "Digigram miXart",
1443        .id_table = snd_mixart_ids,
1444        .probe = snd_mixart_probe,
1445        .remove = __devexit_p(snd_mixart_remove),
1446};
1447
1448static int __init alsa_card_mixart_init(void)
1449{
1450        return pci_register_driver(&driver);
1451}
1452
1453static void __exit alsa_card_mixart_exit(void)
1454{
1455        pci_unregister_driver(&driver);
1456}
1457
1458module_init(alsa_card_mixart_init)
1459module_exit(alsa_card_mixart_exit)
1460