Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/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;
136 
137                 group_state.pipe_count = 0; /* in case of start same command once again with pipe_count=0 */
138 
139                 err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
140                 if (err < 0 || group_state_resp.txx_status != 0) {
141                         dev_err(&mgr->pci->dev,
142                                 "error MSG_STREAM_START_STREAM_GRP_PACKET err=%x stat=%x !\n",
143                                 err, group_state_resp.txx_status);
144                         return -EINVAL;
145                 }
146 
147                 /* in case of start send a synchro top */
148 
149                 request.message_id = MSG_SYSTEM_SEND_SYNCHRO_CMD;
150                 request.uid = (struct mixart_uid){0,0};
151                 request.data = NULL;
152                 request.size = 0;
153 
154                 err = snd_mixart_send_msg(mgr, &request, sizeof(stat), &stat);
155                 if (err < 0 || stat != 0) {
156                         dev_err(&mgr->pci->dev,
157                                 "error MSG_SYSTEM_SEND_SYNCHRO_CMD err=%x stat=%x !\n",
158                                 err, stat);
159                         return -EINVAL;
160                 }
161 
162                 pipe->status = PIPE_RUNNING;
163         }
164         else /* !start */
165                 pipe->status = PIPE_STOPPED;
166 
167         return 0;
168 }
169 
170 
171 static int mixart_set_clock(struct mixart_mgr *mgr,
172                             struct mixart_pipe *pipe, unsigned int rate)
173 {
174         struct mixart_msg request;
175         struct mixart_clock_properties clock_properties;
176         struct mixart_clock_properties_resp clock_prop_resp;
177         int err;
178 
179         switch(pipe->status) {
180         case PIPE_CLOCK_SET:
181                 break;
182         case PIPE_RUNNING:
183                 if(rate != 0)
184                         break;
185         default:
186                 if(rate == 0)
187                         return 0; /* nothing to do */
188                 else {
189                         dev_err(&mgr->pci->dev,
190                                 "error mixart_set_clock(%d) called with wrong pipe->status !\n",
191                                 rate);
192                         return -EINVAL;
193                 }
194         }
195 
196         memset(&clock_properties, 0, sizeof(clock_properties));
197         clock_properties.clock_generic_type = (rate != 0) ? CGT_INTERNAL_CLOCK : CGT_NO_CLOCK;
198         clock_properties.clock_mode = CM_STANDALONE;
199         clock_properties.frequency = rate;
200         clock_properties.nb_callers = 1; /* only one entry in uid_caller ! */
201         clock_properties.uid_caller[0] = pipe->group_uid;
202 
203         dev_dbg(&mgr->pci->dev, "mixart_set_clock to %d kHz\n", rate);
204 
205         request.message_id = MSG_CLOCK_SET_PROPERTIES;
206         request.uid = mgr->uid_console_manager;
207         request.data = &clock_properties;
208         request.size = sizeof(clock_properties);
209 
210         err = snd_mixart_send_msg(mgr, &request, sizeof(clock_prop_resp), &clock_prop_resp);
211         if (err < 0 || clock_prop_resp.status != 0 || clock_prop_resp.clock_mode != CM_STANDALONE) {
212                 dev_err(&mgr->pci->dev,
213                         "error MSG_CLOCK_SET_PROPERTIES err=%x stat=%x mod=%x !\n",
214                         err, clock_prop_resp.status, clock_prop_resp.clock_mode);
215                 return -EINVAL;
216         }
217 
218         if(rate)  pipe->status = PIPE_CLOCK_SET;
219         else      pipe->status = PIPE_RUNNING;
220 
221         return 0;
222 }
223 
224 
225 /*
226  *  Allocate or reference output pipe for analog IOs (pcmp0/1)
227  */
228 struct mixart_pipe *
229 snd_mixart_add_ref_pipe(struct snd_mixart *chip, int pcm_number, int capture,
230                         int monitoring)
231 {
232         int stream_count;
233         struct mixart_pipe *pipe;
234         struct mixart_msg request;
235 
236         if(capture) {
237                 if (pcm_number == MIXART_PCM_ANALOG) {
238                         pipe = &(chip->pipe_in_ana);  /* analog inputs */
239                 } else {
240                         pipe = &(chip->pipe_in_dig); /* digital inputs */
241                 }
242                 request.message_id = MSG_STREAM_ADD_OUTPUT_GROUP;
243                 stream_count = MIXART_CAPTURE_STREAMS;
244         } else {
245                 if (pcm_number == MIXART_PCM_ANALOG) {
246                         pipe = &(chip->pipe_out_ana);  /* analog outputs */
247                 } else {
248                         pipe = &(chip->pipe_out_dig);  /* digital outputs */
249                 }
250                 request.message_id = MSG_STREAM_ADD_INPUT_GROUP;
251                 stream_count = MIXART_PLAYBACK_STREAMS;
252         }
253 
254         /* a new stream is opened and there are already all streams in use */
255         if( (monitoring == 0) && (pipe->references >= stream_count) ) {
256                 return NULL;
257         }
258 
259         /* pipe is not yet defined */
260         if( pipe->status == PIPE_UNDEFINED ) {
261                 int err, i;
262                 struct {
263                         struct mixart_streaming_group_req sgroup_req;
264                         struct mixart_streaming_group sgroup_resp;
265                 } *buf;
266 
267                 dev_dbg(chip->card->dev,
268                         "add_ref_pipe audio chip(%d) pcm(%d)\n",
269                         chip->chip_idx, pcm_number);
270 
271                 buf = kmalloc(sizeof(*buf), GFP_KERNEL);
272                 if (!buf)
273                         return NULL;
274 
275                 request.uid = (struct mixart_uid){0,0};      /* should be StreamManagerUID, but zero is OK if there is only one ! */
276                 request.data = &buf->sgroup_req;
277                 request.size = sizeof(buf->sgroup_req);
278 
279                 memset(&buf->sgroup_req, 0, sizeof(buf->sgroup_req));
280 
281                 buf->sgroup_req.stream_count = stream_count;
282                 buf->sgroup_req.channel_count = 2;
283                 buf->sgroup_req.latency = 256;
284                 buf->sgroup_req.connector = pipe->uid_left_connector;  /* the left connector */
285 
286                 for (i=0; i<stream_count; i++) {
287                         int j;
288                         struct mixart_flowinfo *flowinfo;
289                         struct mixart_bufferinfo *bufferinfo;
290                         
291                         /* we don't yet know the format, so config 16 bit pcm audio for instance */
292                         buf->sgroup_req.stream_info[i].size_max_byte_frame = 1024;
293                         buf->sgroup_req.stream_info[i].size_max_sample_frame = 256;
294                         buf->sgroup_req.stream_info[i].nb_bytes_max_per_sample = MIXART_FLOAT_P__4_0_TO_HEX; /* is 4.0f */
295 
296                         /* find the right bufferinfo_array */
297                         j = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (pcm_number * (MIXART_PLAYBACK_STREAMS + MIXART_CAPTURE_STREAMS)) + i;
298                         if(capture) j += MIXART_PLAYBACK_STREAMS; /* in the array capture is behind playback */
299 
300                         buf->sgroup_req.flow_entry[i] = j;
301 
302                         flowinfo = (struct mixart_flowinfo *)chip->mgr->flowinfo.area;
303                         flowinfo[j].bufferinfo_array_phy_address = (u32)chip->mgr->bufferinfo.addr + (j * sizeof(struct mixart_bufferinfo));
304                         flowinfo[j].bufferinfo_count = 1;               /* 1 will set the miXart to ring-buffer mode ! */
305 
306                         bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
307                         bufferinfo[j].buffer_address = 0;               /* buffer is not yet allocated */
308                         bufferinfo[j].available_length = 0;             /* buffer is not yet allocated */
309 
310                         /* construct the identifier of the stream buffer received in the interrupts ! */
311                         bufferinfo[j].buffer_id = (chip->chip_idx << MIXART_NOTIFY_CARD_OFFSET) + (pcm_number << MIXART_NOTIFY_PCM_OFFSET ) + i;
312                         if(capture) {
313                                 bufferinfo[j].buffer_id |= MIXART_NOTIFY_CAPT_MASK;
314                         }
315                 }
316 
317                 err = snd_mixart_send_msg(chip->mgr, &request, sizeof(buf->sgroup_resp), &buf->sgroup_resp);
318                 if((err < 0) || (buf->sgroup_resp.status != 0)) {
319                         dev_err(chip->card->dev,
320                                 "error MSG_STREAM_ADD_**PUT_GROUP err=%x stat=%x !\n",
321                                 err, buf->sgroup_resp.status);
322                         kfree(buf);
323                         return NULL;
324                 }
325 
326                 pipe->group_uid = buf->sgroup_resp.group;     /* id of the pipe, as returned by embedded */
327                 pipe->stream_count = buf->sgroup_resp.stream_count;
328                 /* pipe->stream_uid[i] = buf->sgroup_resp.stream[i].stream_uid; */
329 
330                 pipe->status = PIPE_STOPPED;
331                 kfree(buf);
332         }
333 
334         if(monitoring)  pipe->monitoring = 1;
335         else            pipe->references++;
336 
337         return pipe;
338 }
339 
340 
341 int snd_mixart_kill_ref_pipe(struct mixart_mgr *mgr,
342                              struct mixart_pipe *pipe, int monitoring)
343 {
344         int err = 0;
345 
346         if(pipe->status == PIPE_UNDEFINED)
347                 return 0;
348 
349         if(monitoring)
350                 pipe->monitoring = 0;
351         else
352                 pipe->references--;
353 
354         if((pipe->references <= 0) && (pipe->monitoring == 0)) {
355 
356                 struct mixart_msg request;
357                 struct mixart_delete_group_resp delete_resp;
358 
359                 /* release the clock */
360                 err = mixart_set_clock( mgr, pipe, 0);
361                 if( err < 0 ) {
362                         dev_err(&mgr->pci->dev,
363                                 "mixart_set_clock(0) return error!\n");
364                 }
365 
366                 /* stop the pipe */
367                 err = mixart_set_pipe_state(mgr, pipe, 0);
368                 if( err < 0 ) {
369                         dev_err(&mgr->pci->dev, "error stopping pipe!\n");
370                 }
371 
372                 request.message_id = MSG_STREAM_DELETE_GROUP;
373                 request.uid = (struct mixart_uid){0,0};
374                 request.data = &pipe->group_uid;            /* the streaming group ! */
375                 request.size = sizeof(pipe->group_uid);
376 
377                 /* delete the pipe */
378                 err = snd_mixart_send_msg(mgr, &request, sizeof(delete_resp), &delete_resp);
379                 if ((err < 0) || (delete_resp.status != 0)) {
380                         dev_err(&mgr->pci->dev,
381                                 "error MSG_STREAM_DELETE_GROUP err(%x), status(%x)\n",
382                                 err, delete_resp.status);
383                 }
384 
385                 pipe->group_uid = (struct mixart_uid){0,0};
386                 pipe->stream_count = 0;
387                 pipe->status = PIPE_UNDEFINED;
388         }
389 
390         return err;
391 }
392 
393 static int mixart_set_stream_state(struct mixart_stream *stream, int start)
394 {
395         struct snd_mixart *chip;
396         struct mixart_stream_state_req stream_state_req;
397         struct mixart_msg request;
398 
399         if(!stream->substream)
400                 return -EINVAL;
401 
402         memset(&stream_state_req, 0, sizeof(stream_state_req));
403         stream_state_req.stream_count = 1;
404         stream_state_req.stream_info.stream_desc.uid_pipe = stream->pipe->group_uid;
405         stream_state_req.stream_info.stream_desc.stream_idx = stream->substream->number;
406 
407         if (stream->substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
408                 request.message_id = start ? MSG_STREAM_START_INPUT_STAGE_PACKET : MSG_STREAM_STOP_INPUT_STAGE_PACKET;
409         else
410                 request.message_id = start ? MSG_STREAM_START_OUTPUT_STAGE_PACKET : MSG_STREAM_STOP_OUTPUT_STAGE_PACKET;
411 
412         request.uid = (struct mixart_uid){0,0};
413         request.data = &stream_state_req;
414         request.size = sizeof(stream_state_req);
415 
416         stream->abs_period_elapsed = 0;            /* reset stream pos      */
417         stream->buf_periods = 0;
418         stream->buf_period_frag = 0;
419 
420         chip = snd_pcm_substream_chip(stream->substream);
421 
422         return snd_mixart_send_msg_nonblock(chip->mgr, &request);
423 }
424 
425 /*
426  *  Trigger callback
427  */
428 
429 static int snd_mixart_trigger(struct snd_pcm_substream *subs, int cmd)
430 {
431         struct mixart_stream *stream = subs->runtime->private_data;
432 
433         switch (cmd) {
434         case SNDRV_PCM_TRIGGER_START:
435 
436                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_START\n");
437 
438                 /* START_STREAM */
439                 if( mixart_set_stream_state(stream, 1) )
440                         return -EINVAL;
441 
442                 stream->status = MIXART_STREAM_STATUS_RUNNING;
443 
444                 break;
445         case SNDRV_PCM_TRIGGER_STOP:
446 
447                 /* STOP_STREAM */
448                 if( mixart_set_stream_state(stream, 0) )
449                         return -EINVAL;
450 
451                 stream->status = MIXART_STREAM_STATUS_OPEN;
452 
453                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_STOP\n");
454 
455                 break;
456 
457         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
458                 /* TODO */
459                 stream->status = MIXART_STREAM_STATUS_PAUSE;
460                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_PUSH\n");
461                 break;
462         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
463                 /* TODO */
464                 stream->status = MIXART_STREAM_STATUS_RUNNING;
465                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_RELEASE\n");
466                 break;
467         default:
468                 return -EINVAL;
469         }
470         return 0;
471 }
472 
473 static int mixart_sync_nonblock_events(struct mixart_mgr *mgr)
474 {
475         unsigned long timeout = jiffies + HZ;
476         while (atomic_read(&mgr->msg_processed) > 0) {
477                 if (time_after(jiffies, timeout)) {
478                         dev_err(&mgr->pci->dev,
479                                 "mixart: cannot process nonblock events!\n");
480                         return -EBUSY;
481                 }
482                 schedule_timeout_uninterruptible(1);
483         }
484         return 0;
485 }
486 
487 /*
488  *  prepare callback for all pcms
489  */
490 static int snd_mixart_prepare(struct snd_pcm_substream *subs)
491 {
492         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
493         struct mixart_stream *stream = subs->runtime->private_data;
494 
495         /* TODO de façon non bloquante, réappliquer les hw_params (rate, bits, codec) */
496 
497         dev_dbg(chip->card->dev, "snd_mixart_prepare\n");
498 
499         mixart_sync_nonblock_events(chip->mgr);
500 
501         /* only the first stream can choose the sample rate */
502         /* the further opened streams will be limited to its frequency (see open) */
503         if(chip->mgr->ref_count_rate == 1)
504                 chip->mgr->sample_rate = subs->runtime->rate;
505 
506         /* set the clock only once (first stream) on the same pipe */
507         if(stream->pipe->references == 1) {
508                 if( mixart_set_clock(chip->mgr, stream->pipe, subs->runtime->rate) )
509                         return -EINVAL;
510         }
511 
512         return 0;
513 }
514 
515 
516 static int mixart_set_format(struct mixart_stream *stream, snd_pcm_format_t format)
517 {
518         int err;
519         struct snd_mixart *chip;
520         struct mixart_msg request;
521         struct mixart_stream_param_desc stream_param;
522         struct mixart_return_uid resp;
523 
524         chip = snd_pcm_substream_chip(stream->substream);
525 
526         memset(&stream_param, 0, sizeof(stream_param));
527 
528         stream_param.coding_type = CT_LINEAR;
529         stream_param.number_of_channel = stream->channels;
530 
531         stream_param.sampling_freq = chip->mgr->sample_rate;
532         if(stream_param.sampling_freq == 0)
533                 stream_param.sampling_freq = 44100; /* if frequency not yet defined, use some default */
534 
535         switch(format){
536         case SNDRV_PCM_FORMAT_U8:
537                 stream_param.sample_type = ST_INTEGER_8;
538                 stream_param.sample_size = 8;
539                 break;
540         case SNDRV_PCM_FORMAT_S16_LE:
541                 stream_param.sample_type = ST_INTEGER_16LE;
542                 stream_param.sample_size = 16;
543                 break;
544         case SNDRV_PCM_FORMAT_S16_BE:
545                 stream_param.sample_type = ST_INTEGER_16BE;
546                 stream_param.sample_size = 16;
547                 break;
548         case SNDRV_PCM_FORMAT_S24_3LE:
549                 stream_param.sample_type = ST_INTEGER_24LE;
550                 stream_param.sample_size = 24;
551                 break;
552         case SNDRV_PCM_FORMAT_S24_3BE:
553                 stream_param.sample_type = ST_INTEGER_24BE;
554                 stream_param.sample_size = 24;
555                 break;
556         case SNDRV_PCM_FORMAT_FLOAT_LE:
557                 stream_param.sample_type = ST_FLOATING_POINT_32LE;
558                 stream_param.sample_size = 32;
559                 break;
560         case  SNDRV_PCM_FORMAT_FLOAT_BE:
561                 stream_param.sample_type = ST_FLOATING_POINT_32BE;
562                 stream_param.sample_size = 32;
563                 break;
564         default:
565                 dev_err(chip->card->dev,
566                         "error mixart_set_format() : unknown format\n");
567                 return -EINVAL;
568         }
569 
570         dev_dbg(chip->card->dev,
571                 "set SNDRV_PCM_FORMAT sample_type(%d) sample_size(%d) freq(%d) channels(%d)\n",
572                    stream_param.sample_type, stream_param.sample_size, stream_param.sampling_freq, stream->channels);
573 
574         /* TODO: what else to configure ? */
575         /* stream_param.samples_per_frame = 2; */
576         /* stream_param.bytes_per_frame = 4; */
577         /* stream_param.bytes_per_sample = 2; */
578 
579         stream_param.pipe_count = 1;      /* set to 1 */
580         stream_param.stream_count = 1;    /* set to 1 */
581         stream_param.stream_desc[0].uid_pipe = stream->pipe->group_uid;
582         stream_param.stream_desc[0].stream_idx = stream->substream->number;
583 
584         request.message_id = MSG_STREAM_SET_INPUT_STAGE_PARAM;
585         request.uid = (struct mixart_uid){0,0};
586         request.data = &stream_param;
587         request.size = sizeof(stream_param);
588 
589         err = snd_mixart_send_msg(chip->mgr, &request, sizeof(resp), &resp);
590         if((err < 0) || resp.error_code) {
591                 dev_err(chip->card->dev,
592                         "MSG_STREAM_SET_INPUT_STAGE_PARAM err=%x; resp=%x\n",
593                         err, resp.error_code);
594                 return -EINVAL;
595         }
596         return 0;
597 }
598 
599 
600 /*
601  *  HW_PARAMS callback for all pcms
602  */
603 static int snd_mixart_hw_params(struct snd_pcm_substream *subs,
604                                 struct snd_pcm_hw_params *hw)
605 {
606         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
607         struct mixart_mgr *mgr = chip->mgr;
608         struct mixart_stream *stream = subs->runtime->private_data;
609         snd_pcm_format_t format;
610         int err;
611         int channels;
612 
613         /* set up channels */
614         channels = params_channels(hw);
615 
616         /*  set up format for the stream */
617         format = params_format(hw);
618 
619         mutex_lock(&mgr->setup_mutex);
620 
621         /* update the stream levels */
622         if( stream->pcm_number <= MIXART_PCM_DIGITAL ) {
623                 int is_aes = stream->pcm_number > MIXART_PCM_ANALOG;
624                 if( subs->stream == SNDRV_PCM_STREAM_PLAYBACK )
625                         mixart_update_playback_stream_level(chip, is_aes, subs->number);
626                 else
627                         mixart_update_capture_stream_level( chip, is_aes);
628         }
629 
630         stream->channels = channels;
631 
632         /* set the format to the board */
633         err = mixart_set_format(stream, format);
634         if(err < 0) {
635                 mutex_unlock(&mgr->setup_mutex);
636                 return err;
637         }
638 
639         /* allocate buffer */
640         err = snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw));
641 
642         if (err > 0) {
643                 struct mixart_bufferinfo *bufferinfo;
644                 int i = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (stream->pcm_number * (MIXART_PLAYBACK_STREAMS+MIXART_CAPTURE_STREAMS)) + subs->number;
645                 if( subs->stream == SNDRV_PCM_STREAM_CAPTURE ) {
646                         i += MIXART_PLAYBACK_STREAMS; /* in array capture is behind playback */
647                 }
648                 
649                 bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
650                 bufferinfo[i].buffer_address = subs->runtime->dma_addr;
651                 bufferinfo[i].available_length = subs->runtime->dma_bytes;
652                 /* bufferinfo[i].buffer_id  is already defined */
653 
654                 dev_dbg(chip->card->dev,
655                         "snd_mixart_hw_params(pcm %d) : dma_addr(%x) dma_bytes(%x) subs-number(%d)\n",
656                         i, bufferinfo[i].buffer_address,
657                                 bufferinfo[i].available_length,
658                                 subs->number);
659         }
660         mutex_unlock(&mgr->setup_mutex);
661 
662         return err;
663 }
664 
665 static int snd_mixart_hw_free(struct snd_pcm_substream *subs)
666 {
667         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
668         snd_pcm_lib_free_pages(subs);
669         mixart_sync_nonblock_events(chip->mgr);
670         return 0;
671 }
672 
673 
674 
675 /*
676  *  TODO CONFIGURATION SPACE for all pcms, mono pcm must update channels_max
677  */
678 static struct snd_pcm_hardware snd_mixart_analog_caps =
679 {
680         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
681                               SNDRV_PCM_INFO_MMAP_VALID |
682                               SNDRV_PCM_INFO_PAUSE),
683         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
684                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
685                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
686                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
687         .rates            = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
688         .rate_min         = 8000,
689         .rate_max         = 48000,
690         .channels_min     = 1,
691         .channels_max     = 2,
692         .buffer_bytes_max = (32*1024),
693         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
694         .period_bytes_max = (16*1024),
695         .periods_min      = 2,
696         .periods_max      = (32*1024/256),
697 };
698 
699 static struct snd_pcm_hardware snd_mixart_digital_caps =
700 {
701         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
702                               SNDRV_PCM_INFO_MMAP_VALID |
703                               SNDRV_PCM_INFO_PAUSE),
704         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
705                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
706                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
707                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
708         .rates            = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
709         .rate_min         = 32000,
710         .rate_max         = 48000,
711         .channels_min     = 1,
712         .channels_max     = 2,
713         .buffer_bytes_max = (32*1024),
714         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
715         .period_bytes_max = (16*1024),
716         .periods_min      = 2,
717         .periods_max      = (32*1024/256),
718 };
719 
720 
721 static int snd_mixart_playback_open(struct snd_pcm_substream *subs)
722 {
723         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
724         struct mixart_mgr        *mgr = chip->mgr;
725         struct snd_pcm_runtime *runtime = subs->runtime;
726         struct snd_pcm *pcm = subs->pcm;
727         struct mixart_stream     *stream;
728         struct mixart_pipe       *pipe;
729         int err = 0;
730         int pcm_number;
731 
732         mutex_lock(&mgr->setup_mutex);
733 
734         if ( pcm == chip->pcm ) {
735                 pcm_number = MIXART_PCM_ANALOG;
736                 runtime->hw = snd_mixart_analog_caps;
737         } else {
738                 snd_BUG_ON(pcm != chip->pcm_dig);
739                 pcm_number = MIXART_PCM_DIGITAL;
740                 runtime->hw = snd_mixart_digital_caps;
741         }
742         dev_dbg(chip->card->dev,
743                 "snd_mixart_playback_open C%d/P%d/Sub%d\n",
744                 chip->chip_idx, pcm_number, subs->number);
745 
746         /* get stream info */
747         stream = &(chip->playback_stream[pcm_number][subs->number]);
748 
749         if (stream->status != MIXART_STREAM_STATUS_FREE){
750                 /* streams in use */
751                 dev_err(chip->card->dev,
752                         "snd_mixart_playback_open C%d/P%d/Sub%d in use\n",
753                         chip->chip_idx, pcm_number, subs->number);
754                 err = -EBUSY;
755                 goto _exit_open;
756         }
757 
758         /* get pipe pointer (out pipe) */
759         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 0, 0);
760 
761         if (pipe == NULL) {
762                 err = -EINVAL;
763                 goto _exit_open;
764         }
765 
766         /* start the pipe if necessary */
767         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
768         if( err < 0 ) {
769                 dev_err(chip->card->dev, "error starting pipe!\n");
770                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
771                 err = -EINVAL;
772                 goto _exit_open;
773         }
774 
775         stream->pipe        = pipe;
776         stream->pcm_number  = pcm_number;
777         stream->status      = MIXART_STREAM_STATUS_OPEN;
778         stream->substream   = subs;
779         stream->channels    = 0; /* not configured yet */
780 
781         runtime->private_data = stream;
782 
783         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
784         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
785 
786         /* if a sample rate is already used, another stream cannot change */
787         if(mgr->ref_count_rate++) {
788                 if(mgr->sample_rate) {
789                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
790                 }
791         }
792 
793  _exit_open:
794         mutex_unlock(&mgr->setup_mutex);
795 
796         return err;
797 }
798 
799 
800 static int snd_mixart_capture_open(struct snd_pcm_substream *subs)
801 {
802         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
803         struct mixart_mgr        *mgr = chip->mgr;
804         struct snd_pcm_runtime *runtime = subs->runtime;
805         struct snd_pcm *pcm = subs->pcm;
806         struct mixart_stream     *stream;
807         struct mixart_pipe       *pipe;
808         int err = 0;
809         int pcm_number;
810 
811         mutex_lock(&mgr->setup_mutex);
812 
813         if ( pcm == chip->pcm ) {
814                 pcm_number = MIXART_PCM_ANALOG;
815                 runtime->hw = snd_mixart_analog_caps;
816         } else {
817                 snd_BUG_ON(pcm != chip->pcm_dig);
818                 pcm_number = MIXART_PCM_DIGITAL;
819                 runtime->hw = snd_mixart_digital_caps;
820         }
821 
822         runtime->hw.channels_min = 2; /* for instance, no mono */
823 
824         dev_dbg(chip->card->dev, "snd_mixart_capture_open C%d/P%d/Sub%d\n",
825                 chip->chip_idx, pcm_number, subs->number);
826 
827         /* get stream info */
828         stream = &(chip->capture_stream[pcm_number]);
829 
830         if (stream->status != MIXART_STREAM_STATUS_FREE){
831                 /* streams in use */
832                 dev_err(chip->card->dev,
833                         "snd_mixart_capture_open C%d/P%d/Sub%d in use\n",
834                         chip->chip_idx, pcm_number, subs->number);
835                 err = -EBUSY;
836                 goto _exit_open;
837         }
838 
839         /* get pipe pointer (in pipe) */
840         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 1, 0);
841 
842         if (pipe == NULL) {
843                 err = -EINVAL;
844                 goto _exit_open;
845         }
846 
847         /* start the pipe if necessary */
848         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
849         if( err < 0 ) {
850                 dev_err(chip->card->dev, "error starting pipe!\n");
851                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
852                 err = -EINVAL;
853                 goto _exit_open;
854         }
855 
856         stream->pipe        = pipe;
857         stream->pcm_number  = pcm_number;
858         stream->status      = MIXART_STREAM_STATUS_OPEN;
859         stream->substream   = subs;
860         stream->channels    = 0; /* not configured yet */
861 
862         runtime->private_data = stream;
863 
864         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
865         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
866 
867         /* if a sample rate is already used, another stream cannot change */
868         if(mgr->ref_count_rate++) {
869                 if(mgr->sample_rate) {
870                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
871                 }
872         }
873 
874  _exit_open:
875         mutex_unlock(&mgr->setup_mutex);
876 
877         return err;
878 }
879 
880 
881 
882 static int snd_mixart_close(struct snd_pcm_substream *subs)
883 {
884         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
885         struct mixart_mgr *mgr = chip->mgr;
886         struct mixart_stream *stream = subs->runtime->private_data;
887 
888         mutex_lock(&mgr->setup_mutex);
889 
890         dev_dbg(chip->card->dev, "snd_mixart_close C%d/P%d/Sub%d\n",
891                 chip->chip_idx, stream->pcm_number, subs->number);
892 
893         /* sample rate released */
894         if(--mgr->ref_count_rate == 0) {
895                 mgr->sample_rate = 0;
896         }
897 
898         /* delete pipe */
899         if (snd_mixart_kill_ref_pipe(mgr, stream->pipe, 0 ) < 0) {
900 
901                 dev_err(chip->card->dev,
902                         "error snd_mixart_kill_ref_pipe C%dP%d\n",
903                         chip->chip_idx, stream->pcm_number);
904         }
905 
906         stream->pipe      = NULL;
907         stream->status    = MIXART_STREAM_STATUS_FREE;
908         stream->substream = NULL;
909 
910         mutex_unlock(&mgr->setup_mutex);
911         return 0;
912 }
913 
914 
915 static snd_pcm_uframes_t snd_mixart_stream_pointer(struct snd_pcm_substream *subs)
916 {
917         struct snd_pcm_runtime *runtime = subs->runtime;
918         struct mixart_stream   *stream  = runtime->private_data;
919 
920         return (snd_pcm_uframes_t)((stream->buf_periods * runtime->period_size) + stream->buf_period_frag);
921 }
922 
923 
924 
925 static struct snd_pcm_ops snd_mixart_playback_ops = {
926         .open      = snd_mixart_playback_open,
927         .close     = snd_mixart_close,
928         .ioctl     = snd_pcm_lib_ioctl,
929         .prepare   = snd_mixart_prepare,
930         .hw_params = snd_mixart_hw_params,
931         .hw_free   = snd_mixart_hw_free,
932         .trigger   = snd_mixart_trigger,
933         .pointer   = snd_mixart_stream_pointer,
934 };
935 
936 static struct snd_pcm_ops snd_mixart_capture_ops = {
937         .open      = snd_mixart_capture_open,
938         .close     = snd_mixart_close,
939         .ioctl     = snd_pcm_lib_ioctl,
940         .prepare   = snd_mixart_prepare,
941         .hw_params = snd_mixart_hw_params,
942         .hw_free   = snd_mixart_hw_free,
943         .trigger   = snd_mixart_trigger,
944         .pointer   = snd_mixart_stream_pointer,
945 };
946 
947 static void preallocate_buffers(struct snd_mixart *chip, struct snd_pcm *pcm)
948 {
949 #if 0
950         struct snd_pcm_substream *subs;
951         int stream;
952 
953         for (stream = 0; stream < 2; stream++) {
954                 int idx = 0;
955                 for (subs = pcm->streams[stream].substream; subs; subs = subs->next, idx++)
956                         /* set up the unique device id with the chip index */
957                         subs->dma_device.id = subs->pcm->device << 16 |
958                                 subs->stream << 8 | (subs->number + 1) |
959                                 (chip->chip_idx + 1) << 24;
960         }
961 #endif
962         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
963                                               snd_dma_pci_data(chip->mgr->pci), 32*1024, 32*1024);
964 }
965 
966 /*
967  */
968 static int snd_mixart_pcm_analog(struct snd_mixart *chip)
969 {
970         int err;
971         struct snd_pcm *pcm;
972         char name[32];
973 
974         sprintf(name, "miXart analog %d", chip->chip_idx);
975         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_ANALOG,
976                                MIXART_PLAYBACK_STREAMS,
977                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
978                 dev_err(chip->card->dev,
979                         "cannot create the analog pcm %d\n", chip->chip_idx);
980                 return err;
981         }
982 
983         pcm->private_data = chip;
984 
985         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
986         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
987 
988         pcm->info_flags = 0;
989         strcpy(pcm->name, name);
990 
991         preallocate_buffers(chip, pcm);
992 
993         chip->pcm = pcm;
994         return 0;
995 }
996 
997 
998 /*
999  */
1000 static int snd_mixart_pcm_digital(struct snd_mixart *chip)
1001 {
1002         int err;
1003         struct snd_pcm *pcm;
1004         char name[32];
1005 
1006         sprintf(name, "miXart AES/EBU %d", chip->chip_idx);
1007         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_DIGITAL,
1008                                MIXART_PLAYBACK_STREAMS,
1009                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
1010                 dev_err(chip->card->dev,
1011                         "cannot create the digital pcm %d\n", chip->chip_idx);
1012                 return err;
1013         }
1014 
1015         pcm->private_data = chip;
1016 
1017         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
1018         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
1019 
1020         pcm->info_flags = 0;
1021         strcpy(pcm->name, name);
1022 
1023         preallocate_buffers(chip, pcm);
1024 
1025         chip->pcm_dig = pcm;
1026         return 0;
1027 }
1028 
1029 static int snd_mixart_chip_free(struct snd_mixart *chip)
1030 {
1031         kfree(chip);
1032         return 0;
1033 }
1034 
1035 static int snd_mixart_chip_dev_free(struct snd_device *device)
1036 {
1037         struct snd_mixart *chip = device->device_data;
1038         return snd_mixart_chip_free(chip);
1039 }
1040 
1041 
1042 /*
1043  */
1044 static int snd_mixart_create(struct mixart_mgr *mgr, struct snd_card *card, int idx)
1045 {
1046         int err;
1047         struct snd_mixart *chip;
1048         static struct snd_device_ops ops = {
1049                 .dev_free = snd_mixart_chip_dev_free,
1050         };
1051 
1052         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1053         if (! chip) {
1054                 dev_err(card->dev, "cannot allocate chip\n");
1055                 return -ENOMEM;
1056         }
1057 
1058         chip->card = card;
1059         chip->chip_idx = idx;
1060         chip->mgr = mgr;
1061 
1062         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1063                 snd_mixart_chip_free(chip);
1064                 return err;
1065         }
1066 
1067         mgr->chip[idx] = chip;
1068         return 0;
1069 }
1070 
1071 int snd_mixart_create_pcm(struct snd_mixart* chip)
1072 {
1073         int err;
1074 
1075         err = snd_mixart_pcm_analog(chip);
1076         if (err < 0)
1077                 return err;
1078 
1079         if(chip->mgr->board_type == MIXART_DAUGHTER_TYPE_AES) {
1080 
1081                 err = snd_mixart_pcm_digital(chip);
1082                 if (err < 0)
1083                         return err;
1084         }
1085         return err;
1086 }
1087 
1088 
1089 /*
1090  * release all the cards assigned to a manager instance
1091  */
1092 static int snd_mixart_free(struct mixart_mgr *mgr)
1093 {
1094         unsigned int i;
1095 
1096         for (i = 0; i < mgr->num_cards; i++) {
1097                 if (mgr->chip[i])
1098                         snd_card_free(mgr->chip[i]->card);
1099         }
1100 
1101         /* stop mailbox */
1102         snd_mixart_exit_mailbox(mgr);
1103 
1104         /* release irq  */
1105         if (mgr->irq >= 0)
1106                 free_irq(mgr->irq, mgr);
1107 
1108         /* reset board if some firmware was loaded */
1109         if(mgr->dsp_loaded) {
1110                 snd_mixart_reset_board(mgr);
1111                 dev_dbg(&mgr->pci->dev, "reset miXart !\n");
1112         }
1113 
1114         /* release the i/o ports */
1115         for (i = 0; i < 2; i++) {
1116                 if (mgr->mem[i].virt)
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 (pci_set_dma_mask(pci, 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_irq(pci->irq, snd_mixart_interrupt, IRQF_SHARED,
1307                         KBUILD_MODNAME, mgr)) {
1308                 dev_err(&pci->dev, "unable to grab IRQ %d\n", pci->irq);
1309                 snd_mixart_free(mgr);
1310                 return -EBUSY;
1311         }
1312         mgr->irq = pci->irq;
1313 
1314         sprintf(mgr->shortname, "Digigram miXart");
1315         sprintf(mgr->longname, "%s at 0x%lx & 0x%lx, irq %i", mgr->shortname, mgr->mem[0].phys, mgr->mem[1].phys, mgr->irq);
1316 
1317         /* ISR spinlock  */
1318         spin_lock_init(&mgr->lock);
1319 
1320         /* init mailbox  */
1321         mgr->msg_fifo_readptr = 0;
1322         mgr->msg_fifo_writeptr = 0;
1323 
1324         spin_lock_init(&mgr->msg_lock);
1325         mutex_init(&mgr->msg_mutex);
1326         init_waitqueue_head(&mgr->msg_sleep);
1327         atomic_set(&mgr->msg_processed, 0);
1328 
1329         /* init setup mutex*/
1330         mutex_init(&mgr->setup_mutex);
1331 
1332         /* init message taslket */
1333         tasklet_init(&mgr->msg_taskq, snd_mixart_msg_tasklet, (unsigned long) mgr);
1334 
1335         /* card assignment */
1336         mgr->num_cards = MIXART_MAX_CARDS; /* 4  FIXME: configurable? */
1337         for (i = 0; i < mgr->num_cards; i++) {
1338                 struct snd_card *card;
1339                 char tmpid[16];
1340                 int idx;
1341 
1342                 if (index[dev] < 0)
1343                         idx = index[dev];
1344                 else
1345                         idx = index[dev] + i;
1346                 snprintf(tmpid, sizeof(tmpid), "%s-%d", id[dev] ? id[dev] : "MIXART", i);
1347                 err = snd_card_new(&pci->dev, idx, tmpid, THIS_MODULE,
1348                                    0, &card);
1349 
1350                 if (err < 0) {
1351                         dev_err(&pci->dev, "cannot allocate the card %d\n", i);
1352                         snd_mixart_free(mgr);
1353                         return err;
1354                 }
1355 
1356                 strcpy(card->driver, CARD_NAME);
1357                 sprintf(card->shortname, "%s [PCM #%d]", mgr->shortname, i);
1358                 sprintf(card->longname, "%s [PCM #%d]", mgr->longname, i);
1359 
1360                 if ((err = snd_mixart_create(mgr, card, i)) < 0) {
1361                         snd_card_free(card);
1362                         snd_mixart_free(mgr);
1363                         return err;
1364                 }
1365 
1366                 if(i==0) {
1367                         /* init proc interface only for chip0 */
1368                         snd_mixart_proc_init(mgr->chip[i]);
1369                 }
1370 
1371                 if ((err = snd_card_register(card)) < 0) {
1372                         snd_mixart_free(mgr);
1373                         return err;
1374                 }
1375         }
1376 
1377         /* init firmware status (mgr->dsp_loaded reset in hwdep_new) */
1378         mgr->board_type = MIXART_DAUGHTER_TYPE_NONE;
1379 
1380         /* create array of streaminfo */
1381         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1382                             sizeof(struct mixart_flowinfo)) );
1383         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1384                                 size, &mgr->flowinfo) < 0) {
1385                 snd_mixart_free(mgr);
1386                 return -ENOMEM;
1387         }
1388         /* init streaminfo_array */
1389         memset(mgr->flowinfo.area, 0, size);
1390 
1391         /* create array of bufferinfo */
1392         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1393                             sizeof(struct mixart_bufferinfo)) );
1394         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1395                                 size, &mgr->bufferinfo) < 0) {
1396                 snd_mixart_free(mgr);
1397                 return -ENOMEM;
1398         }
1399         /* init bufferinfo_array */
1400         memset(mgr->bufferinfo.area, 0, size);
1401 
1402         /* set up firmware */
1403         err = snd_mixart_setup_firmware(mgr);
1404         if (err < 0) {
1405                 snd_mixart_free(mgr);
1406                 return err;
1407         }
1408 
1409         pci_set_drvdata(pci, mgr);
1410         dev++;
1411         return 0;
1412 }
1413 
1414 static void snd_mixart_remove(struct pci_dev *pci)
1415 {
1416         snd_mixart_free(pci_get_drvdata(pci));
1417 }
1418 
1419 static struct pci_driver mixart_driver = {
1420         .name = KBUILD_MODNAME,
1421         .id_table = snd_mixart_ids,
1422         .probe = snd_mixart_probe,
1423         .remove = snd_mixart_remove,
1424 };
1425 
1426 module_pci_driver(mixart_driver);
1427 

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