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Linux/sound/pci/mixart/mixart.c

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  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  * Driver for Digigram miXart soundcards
  4  *
  5  * main file with alsa callbacks
  6  *
  7  * Copyright (c) 2003 by Digigram <alsa@digigram.com>
  8  */
  9 
 10 
 11 #include <linux/init.h>
 12 #include <linux/interrupt.h>
 13 #include <linux/pci.h>
 14 #include <linux/dma-mapping.h>
 15 #include <linux/module.h>
 16 #include <linux/mutex.h>
 17 #include <linux/slab.h>
 18 
 19 #include <sound/core.h>
 20 #include <sound/initval.h>
 21 #include <sound/info.h>
 22 #include <sound/control.h>
 23 #include <sound/pcm.h>
 24 #include <sound/pcm_params.h>
 25 #include "mixart.h"
 26 #include "mixart_hwdep.h"
 27 #include "mixart_core.h"
 28 #include "mixart_mixer.h"
 29 
 30 #define CARD_NAME "miXart"
 31 
 32 MODULE_AUTHOR("Digigram <alsa@digigram.com>");
 33 MODULE_DESCRIPTION("Digigram " CARD_NAME);
 34 MODULE_LICENSE("GPL");
 35 MODULE_SUPPORTED_DEVICE("{{Digigram," CARD_NAME "}}");
 36 
 37 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;             /* Index 0-MAX */
 38 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;              /* ID for this card */
 39 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
 40 
 41 module_param_array(index, int, NULL, 0444);
 42 MODULE_PARM_DESC(index, "Index value for Digigram " CARD_NAME " soundcard.");
 43 module_param_array(id, charp, NULL, 0444);
 44 MODULE_PARM_DESC(id, "ID string for Digigram " CARD_NAME " soundcard.");
 45 module_param_array(enable, bool, NULL, 0444);
 46 MODULE_PARM_DESC(enable, "Enable Digigram " CARD_NAME " soundcard.");
 47 
 48 /*
 49  */
 50 
 51 static const struct pci_device_id snd_mixart_ids[] = {
 52         { PCI_VDEVICE(MOTOROLA, 0x0003), 0, }, /* MC8240 */
 53         { 0, }
 54 };
 55 
 56 MODULE_DEVICE_TABLE(pci, snd_mixart_ids);
 57 
 58 
 59 static int mixart_set_pipe_state(struct mixart_mgr *mgr,
 60                                  struct mixart_pipe *pipe, int start)
 61 {
 62         struct mixart_group_state_req group_state;
 63         struct mixart_group_state_resp group_state_resp;
 64         struct mixart_msg request;
 65         int err;
 66         u32 system_msg_uid;
 67 
 68         switch(pipe->status) {
 69         case PIPE_RUNNING:
 70         case PIPE_CLOCK_SET:
 71                 if(start) return 0; /* already started */
 72                 break;
 73         case PIPE_STOPPED:
 74                 if(!start) return 0; /* already stopped */
 75                 break;
 76         default:
 77                 dev_err(&mgr->pci->dev,
 78                         "error mixart_set_pipe_state called with wrong pipe->status!\n");
 79                 return -EINVAL;      /* function called with wrong pipe status */
 80         }
 81 
 82         system_msg_uid = 0x12345678; /* the event ! (take care: the MSB and two LSB's have to be 0) */
 83 
 84         /* wait on the last MSG_SYSTEM_SEND_SYNCHRO_CMD command to be really finished */
 85 
 86         request.message_id = MSG_SYSTEM_WAIT_SYNCHRO_CMD;
 87         request.uid = (struct mixart_uid){0,0};
 88         request.data = &system_msg_uid;
 89         request.size = sizeof(system_msg_uid);
 90 
 91         err = snd_mixart_send_msg_wait_notif(mgr, &request, system_msg_uid);
 92         if(err) {
 93                 dev_err(&mgr->pci->dev,
 94                         "error : MSG_SYSTEM_WAIT_SYNCHRO_CMD was not notified !\n");
 95                 return err;
 96         }
 97 
 98         /* start or stop the pipe (1 pipe) */
 99 
100         memset(&group_state, 0, sizeof(group_state));
101         group_state.pipe_count = 1;
102         group_state.pipe_uid[0] = pipe->group_uid;
103 
104         if(start)
105                 request.message_id = MSG_STREAM_START_STREAM_GRP_PACKET;
106         else
107                 request.message_id = MSG_STREAM_STOP_STREAM_GRP_PACKET;
108 
109         request.uid = pipe->group_uid; /*(struct mixart_uid){0,0};*/
110         request.data = &group_state;
111         request.size = sizeof(group_state);
112 
113         err = snd_mixart_send_msg(mgr, &request, sizeof(group_state_resp), &group_state_resp);
114         if (err < 0 || group_state_resp.txx_status != 0) {
115                 dev_err(&mgr->pci->dev,
116                         "error MSG_STREAM_ST***_STREAM_GRP_PACKET err=%x stat=%x !\n",
117                         err, group_state_resp.txx_status);
118                 return -EINVAL;
119         }
120 
121         if(start) {
122                 u32 stat = 0;
123 
124                 group_state.pipe_count = 0; /* in case of start same command once again with pipe_count=0 */
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_START_STREAM_GRP_PACKET err=%x stat=%x !\n",
130                                 err, group_state_resp.txx_status);
131                         return -EINVAL;
132                 }
133 
134                 /* in case of start send a synchro top */
135 
136                 request.message_id = MSG_SYSTEM_SEND_SYNCHRO_CMD;
137                 request.uid = (struct mixart_uid){0,0};
138                 request.data = NULL;
139                 request.size = 0;
140 
141                 err = snd_mixart_send_msg(mgr, &request, sizeof(stat), &stat);
142                 if (err < 0 || stat != 0) {
143                         dev_err(&mgr->pci->dev,
144                                 "error MSG_SYSTEM_SEND_SYNCHRO_CMD err=%x stat=%x !\n",
145                                 err, stat);
146                         return -EINVAL;
147                 }
148 
149                 pipe->status = PIPE_RUNNING;
150         }
151         else /* !start */
152                 pipe->status = PIPE_STOPPED;
153 
154         return 0;
155 }
156 
157 
158 static int mixart_set_clock(struct mixart_mgr *mgr,
159                             struct mixart_pipe *pipe, unsigned int rate)
160 {
161         struct mixart_msg request;
162         struct mixart_clock_properties clock_properties;
163         struct mixart_clock_properties_resp clock_prop_resp;
164         int err;
165 
166         switch(pipe->status) {
167         case PIPE_CLOCK_SET:
168                 break;
169         case PIPE_RUNNING:
170                 if(rate != 0)
171                         break;
172                 /* fall through */
173         default:
174                 if(rate == 0)
175                         return 0; /* nothing to do */
176                 else {
177                         dev_err(&mgr->pci->dev,
178                                 "error mixart_set_clock(%d) called with wrong pipe->status !\n",
179                                 rate);
180                         return -EINVAL;
181                 }
182         }
183 
184         memset(&clock_properties, 0, sizeof(clock_properties));
185         clock_properties.clock_generic_type = (rate != 0) ? CGT_INTERNAL_CLOCK : CGT_NO_CLOCK;
186         clock_properties.clock_mode = CM_STANDALONE;
187         clock_properties.frequency = rate;
188         clock_properties.nb_callers = 1; /* only one entry in uid_caller ! */
189         clock_properties.uid_caller[0] = pipe->group_uid;
190 
191         dev_dbg(&mgr->pci->dev, "mixart_set_clock to %d kHz\n", rate);
192 
193         request.message_id = MSG_CLOCK_SET_PROPERTIES;
194         request.uid = mgr->uid_console_manager;
195         request.data = &clock_properties;
196         request.size = sizeof(clock_properties);
197 
198         err = snd_mixart_send_msg(mgr, &request, sizeof(clock_prop_resp), &clock_prop_resp);
199         if (err < 0 || clock_prop_resp.status != 0 || clock_prop_resp.clock_mode != CM_STANDALONE) {
200                 dev_err(&mgr->pci->dev,
201                         "error MSG_CLOCK_SET_PROPERTIES err=%x stat=%x mod=%x !\n",
202                         err, clock_prop_resp.status, clock_prop_resp.clock_mode);
203                 return -EINVAL;
204         }
205 
206         if(rate)  pipe->status = PIPE_CLOCK_SET;
207         else      pipe->status = PIPE_RUNNING;
208 
209         return 0;
210 }
211 
212 
213 /*
214  *  Allocate or reference output pipe for analog IOs (pcmp0/1)
215  */
216 struct mixart_pipe *
217 snd_mixart_add_ref_pipe(struct snd_mixart *chip, int pcm_number, int capture,
218                         int monitoring)
219 {
220         int stream_count;
221         struct mixart_pipe *pipe;
222         struct mixart_msg request;
223 
224         if(capture) {
225                 if (pcm_number == MIXART_PCM_ANALOG) {
226                         pipe = &(chip->pipe_in_ana);  /* analog inputs */
227                 } else {
228                         pipe = &(chip->pipe_in_dig); /* digital inputs */
229                 }
230                 request.message_id = MSG_STREAM_ADD_OUTPUT_GROUP;
231                 stream_count = MIXART_CAPTURE_STREAMS;
232         } else {
233                 if (pcm_number == MIXART_PCM_ANALOG) {
234                         pipe = &(chip->pipe_out_ana);  /* analog outputs */
235                 } else {
236                         pipe = &(chip->pipe_out_dig);  /* digital outputs */
237                 }
238                 request.message_id = MSG_STREAM_ADD_INPUT_GROUP;
239                 stream_count = MIXART_PLAYBACK_STREAMS;
240         }
241 
242         /* a new stream is opened and there are already all streams in use */
243         if( (monitoring == 0) && (pipe->references >= stream_count) ) {
244                 return NULL;
245         }
246 
247         /* pipe is not yet defined */
248         if( pipe->status == PIPE_UNDEFINED ) {
249                 int err, i;
250                 struct {
251                         struct mixart_streaming_group_req sgroup_req;
252                         struct mixart_streaming_group sgroup_resp;
253                 } *buf;
254 
255                 dev_dbg(chip->card->dev,
256                         "add_ref_pipe audio chip(%d) pcm(%d)\n",
257                         chip->chip_idx, pcm_number);
258 
259                 buf = kmalloc(sizeof(*buf), GFP_KERNEL);
260                 if (!buf)
261                         return NULL;
262 
263                 request.uid = (struct mixart_uid){0,0};      /* should be StreamManagerUID, but zero is OK if there is only one ! */
264                 request.data = &buf->sgroup_req;
265                 request.size = sizeof(buf->sgroup_req);
266 
267                 memset(&buf->sgroup_req, 0, sizeof(buf->sgroup_req));
268 
269                 buf->sgroup_req.stream_count = stream_count;
270                 buf->sgroup_req.channel_count = 2;
271                 buf->sgroup_req.latency = 256;
272                 buf->sgroup_req.connector = pipe->uid_left_connector;  /* the left connector */
273 
274                 for (i=0; i<stream_count; i++) {
275                         int j;
276                         struct mixart_flowinfo *flowinfo;
277                         struct mixart_bufferinfo *bufferinfo;
278                         
279                         /* we don't yet know the format, so config 16 bit pcm audio for instance */
280                         buf->sgroup_req.stream_info[i].size_max_byte_frame = 1024;
281                         buf->sgroup_req.stream_info[i].size_max_sample_frame = 256;
282                         buf->sgroup_req.stream_info[i].nb_bytes_max_per_sample = MIXART_FLOAT_P__4_0_TO_HEX; /* is 4.0f */
283 
284                         /* find the right bufferinfo_array */
285                         j = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (pcm_number * (MIXART_PLAYBACK_STREAMS + MIXART_CAPTURE_STREAMS)) + i;
286                         if(capture) j += MIXART_PLAYBACK_STREAMS; /* in the array capture is behind playback */
287 
288                         buf->sgroup_req.flow_entry[i] = j;
289 
290                         flowinfo = (struct mixart_flowinfo *)chip->mgr->flowinfo.area;
291                         flowinfo[j].bufferinfo_array_phy_address = (u32)chip->mgr->bufferinfo.addr + (j * sizeof(struct mixart_bufferinfo));
292                         flowinfo[j].bufferinfo_count = 1;               /* 1 will set the miXart to ring-buffer mode ! */
293 
294                         bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
295                         bufferinfo[j].buffer_address = 0;               /* buffer is not yet allocated */
296                         bufferinfo[j].available_length = 0;             /* buffer is not yet allocated */
297 
298                         /* construct the identifier of the stream buffer received in the interrupts ! */
299                         bufferinfo[j].buffer_id = (chip->chip_idx << MIXART_NOTIFY_CARD_OFFSET) + (pcm_number << MIXART_NOTIFY_PCM_OFFSET ) + i;
300                         if(capture) {
301                                 bufferinfo[j].buffer_id |= MIXART_NOTIFY_CAPT_MASK;
302                         }
303                 }
304 
305                 err = snd_mixart_send_msg(chip->mgr, &request, sizeof(buf->sgroup_resp), &buf->sgroup_resp);
306                 if((err < 0) || (buf->sgroup_resp.status != 0)) {
307                         dev_err(chip->card->dev,
308                                 "error MSG_STREAM_ADD_**PUT_GROUP err=%x stat=%x !\n",
309                                 err, buf->sgroup_resp.status);
310                         kfree(buf);
311                         return NULL;
312                 }
313 
314                 pipe->group_uid = buf->sgroup_resp.group;     /* id of the pipe, as returned by embedded */
315                 pipe->stream_count = buf->sgroup_resp.stream_count;
316                 /* pipe->stream_uid[i] = buf->sgroup_resp.stream[i].stream_uid; */
317 
318                 pipe->status = PIPE_STOPPED;
319                 kfree(buf);
320         }
321 
322         if(monitoring)  pipe->monitoring = 1;
323         else            pipe->references++;
324 
325         return pipe;
326 }
327 
328 
329 int snd_mixart_kill_ref_pipe(struct mixart_mgr *mgr,
330                              struct mixart_pipe *pipe, int monitoring)
331 {
332         int err = 0;
333 
334         if(pipe->status == PIPE_UNDEFINED)
335                 return 0;
336 
337         if(monitoring)
338                 pipe->monitoring = 0;
339         else
340                 pipe->references--;
341 
342         if((pipe->references <= 0) && (pipe->monitoring == 0)) {
343 
344                 struct mixart_msg request;
345                 struct mixart_delete_group_resp delete_resp;
346 
347                 /* release the clock */
348                 err = mixart_set_clock( mgr, pipe, 0);
349                 if( err < 0 ) {
350                         dev_err(&mgr->pci->dev,
351                                 "mixart_set_clock(0) return error!\n");
352                 }
353 
354                 /* stop the pipe */
355                 err = mixart_set_pipe_state(mgr, pipe, 0);
356                 if( err < 0 ) {
357                         dev_err(&mgr->pci->dev, "error stopping pipe!\n");
358                 }
359 
360                 request.message_id = MSG_STREAM_DELETE_GROUP;
361                 request.uid = (struct mixart_uid){0,0};
362                 request.data = &pipe->group_uid;            /* the streaming group ! */
363                 request.size = sizeof(pipe->group_uid);
364 
365                 /* delete the pipe */
366                 err = snd_mixart_send_msg(mgr, &request, sizeof(delete_resp), &delete_resp);
367                 if ((err < 0) || (delete_resp.status != 0)) {
368                         dev_err(&mgr->pci->dev,
369                                 "error MSG_STREAM_DELETE_GROUP err(%x), status(%x)\n",
370                                 err, delete_resp.status);
371                 }
372 
373                 pipe->group_uid = (struct mixart_uid){0,0};
374                 pipe->stream_count = 0;
375                 pipe->status = PIPE_UNDEFINED;
376         }
377 
378         return err;
379 }
380 
381 static int mixart_set_stream_state(struct mixart_stream *stream, int start)
382 {
383         struct snd_mixart *chip;
384         struct mixart_stream_state_req stream_state_req;
385         struct mixart_msg request;
386 
387         if(!stream->substream)
388                 return -EINVAL;
389 
390         memset(&stream_state_req, 0, sizeof(stream_state_req));
391         stream_state_req.stream_count = 1;
392         stream_state_req.stream_info.stream_desc.uid_pipe = stream->pipe->group_uid;
393         stream_state_req.stream_info.stream_desc.stream_idx = stream->substream->number;
394 
395         if (stream->substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
396                 request.message_id = start ? MSG_STREAM_START_INPUT_STAGE_PACKET : MSG_STREAM_STOP_INPUT_STAGE_PACKET;
397         else
398                 request.message_id = start ? MSG_STREAM_START_OUTPUT_STAGE_PACKET : MSG_STREAM_STOP_OUTPUT_STAGE_PACKET;
399 
400         request.uid = (struct mixart_uid){0,0};
401         request.data = &stream_state_req;
402         request.size = sizeof(stream_state_req);
403 
404         stream->abs_period_elapsed = 0;            /* reset stream pos      */
405         stream->buf_periods = 0;
406         stream->buf_period_frag = 0;
407 
408         chip = snd_pcm_substream_chip(stream->substream);
409 
410         return snd_mixart_send_msg_nonblock(chip->mgr, &request);
411 }
412 
413 /*
414  *  Trigger callback
415  */
416 
417 static int snd_mixart_trigger(struct snd_pcm_substream *subs, int cmd)
418 {
419         struct mixart_stream *stream = subs->runtime->private_data;
420 
421         switch (cmd) {
422         case SNDRV_PCM_TRIGGER_START:
423 
424                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_START\n");
425 
426                 /* START_STREAM */
427                 if( mixart_set_stream_state(stream, 1) )
428                         return -EINVAL;
429 
430                 stream->status = MIXART_STREAM_STATUS_RUNNING;
431 
432                 break;
433         case SNDRV_PCM_TRIGGER_STOP:
434 
435                 /* STOP_STREAM */
436                 if( mixart_set_stream_state(stream, 0) )
437                         return -EINVAL;
438 
439                 stream->status = MIXART_STREAM_STATUS_OPEN;
440 
441                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_TRIGGER_STOP\n");
442 
443                 break;
444 
445         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
446                 /* TODO */
447                 stream->status = MIXART_STREAM_STATUS_PAUSE;
448                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_PUSH\n");
449                 break;
450         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
451                 /* TODO */
452                 stream->status = MIXART_STREAM_STATUS_RUNNING;
453                 dev_dbg(subs->pcm->card->dev, "SNDRV_PCM_PAUSE_RELEASE\n");
454                 break;
455         default:
456                 return -EINVAL;
457         }
458         return 0;
459 }
460 
461 static int mixart_sync_nonblock_events(struct mixart_mgr *mgr)
462 {
463         unsigned long timeout = jiffies + HZ;
464         while (atomic_read(&mgr->msg_processed) > 0) {
465                 if (time_after(jiffies, timeout)) {
466                         dev_err(&mgr->pci->dev,
467                                 "mixart: cannot process nonblock events!\n");
468                         return -EBUSY;
469                 }
470                 schedule_timeout_uninterruptible(1);
471         }
472         return 0;
473 }
474 
475 /*
476  *  prepare callback for all pcms
477  */
478 static int snd_mixart_prepare(struct snd_pcm_substream *subs)
479 {
480         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
481         struct mixart_stream *stream = subs->runtime->private_data;
482 
483         /* TODO de façon non bloquante, réappliquer les hw_params (rate, bits, codec) */
484 
485         dev_dbg(chip->card->dev, "snd_mixart_prepare\n");
486 
487         mixart_sync_nonblock_events(chip->mgr);
488 
489         /* only the first stream can choose the sample rate */
490         /* the further opened streams will be limited to its frequency (see open) */
491         if(chip->mgr->ref_count_rate == 1)
492                 chip->mgr->sample_rate = subs->runtime->rate;
493 
494         /* set the clock only once (first stream) on the same pipe */
495         if(stream->pipe->references == 1) {
496                 if( mixart_set_clock(chip->mgr, stream->pipe, subs->runtime->rate) )
497                         return -EINVAL;
498         }
499 
500         return 0;
501 }
502 
503 
504 static int mixart_set_format(struct mixart_stream *stream, snd_pcm_format_t format)
505 {
506         int err;
507         struct snd_mixart *chip;
508         struct mixart_msg request;
509         struct mixart_stream_param_desc stream_param;
510         struct mixart_return_uid resp;
511 
512         chip = snd_pcm_substream_chip(stream->substream);
513 
514         memset(&stream_param, 0, sizeof(stream_param));
515 
516         stream_param.coding_type = CT_LINEAR;
517         stream_param.number_of_channel = stream->channels;
518 
519         stream_param.sampling_freq = chip->mgr->sample_rate;
520         if(stream_param.sampling_freq == 0)
521                 stream_param.sampling_freq = 44100; /* if frequency not yet defined, use some default */
522 
523         switch(format){
524         case SNDRV_PCM_FORMAT_U8:
525                 stream_param.sample_type = ST_INTEGER_8;
526                 stream_param.sample_size = 8;
527                 break;
528         case SNDRV_PCM_FORMAT_S16_LE:
529                 stream_param.sample_type = ST_INTEGER_16LE;
530                 stream_param.sample_size = 16;
531                 break;
532         case SNDRV_PCM_FORMAT_S16_BE:
533                 stream_param.sample_type = ST_INTEGER_16BE;
534                 stream_param.sample_size = 16;
535                 break;
536         case SNDRV_PCM_FORMAT_S24_3LE:
537                 stream_param.sample_type = ST_INTEGER_24LE;
538                 stream_param.sample_size = 24;
539                 break;
540         case SNDRV_PCM_FORMAT_S24_3BE:
541                 stream_param.sample_type = ST_INTEGER_24BE;
542                 stream_param.sample_size = 24;
543                 break;
544         case SNDRV_PCM_FORMAT_FLOAT_LE:
545                 stream_param.sample_type = ST_FLOATING_POINT_32LE;
546                 stream_param.sample_size = 32;
547                 break;
548         case  SNDRV_PCM_FORMAT_FLOAT_BE:
549                 stream_param.sample_type = ST_FLOATING_POINT_32BE;
550                 stream_param.sample_size = 32;
551                 break;
552         default:
553                 dev_err(chip->card->dev,
554                         "error mixart_set_format() : unknown format\n");
555                 return -EINVAL;
556         }
557 
558         dev_dbg(chip->card->dev,
559                 "set SNDRV_PCM_FORMAT sample_type(%d) sample_size(%d) freq(%d) channels(%d)\n",
560                    stream_param.sample_type, stream_param.sample_size, stream_param.sampling_freq, stream->channels);
561 
562         /* TODO: what else to configure ? */
563         /* stream_param.samples_per_frame = 2; */
564         /* stream_param.bytes_per_frame = 4; */
565         /* stream_param.bytes_per_sample = 2; */
566 
567         stream_param.pipe_count = 1;      /* set to 1 */
568         stream_param.stream_count = 1;    /* set to 1 */
569         stream_param.stream_desc[0].uid_pipe = stream->pipe->group_uid;
570         stream_param.stream_desc[0].stream_idx = stream->substream->number;
571 
572         request.message_id = MSG_STREAM_SET_INPUT_STAGE_PARAM;
573         request.uid = (struct mixart_uid){0,0};
574         request.data = &stream_param;
575         request.size = sizeof(stream_param);
576 
577         err = snd_mixart_send_msg(chip->mgr, &request, sizeof(resp), &resp);
578         if((err < 0) || resp.error_code) {
579                 dev_err(chip->card->dev,
580                         "MSG_STREAM_SET_INPUT_STAGE_PARAM err=%x; resp=%x\n",
581                         err, resp.error_code);
582                 return -EINVAL;
583         }
584         return 0;
585 }
586 
587 
588 /*
589  *  HW_PARAMS callback for all pcms
590  */
591 static int snd_mixart_hw_params(struct snd_pcm_substream *subs,
592                                 struct snd_pcm_hw_params *hw)
593 {
594         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
595         struct mixart_mgr *mgr = chip->mgr;
596         struct mixart_stream *stream = subs->runtime->private_data;
597         snd_pcm_format_t format;
598         int err;
599         int channels;
600 
601         /* set up channels */
602         channels = params_channels(hw);
603 
604         /*  set up format for the stream */
605         format = params_format(hw);
606 
607         mutex_lock(&mgr->setup_mutex);
608 
609         /* update the stream levels */
610         if( stream->pcm_number <= MIXART_PCM_DIGITAL ) {
611                 int is_aes = stream->pcm_number > MIXART_PCM_ANALOG;
612                 if( subs->stream == SNDRV_PCM_STREAM_PLAYBACK )
613                         mixart_update_playback_stream_level(chip, is_aes, subs->number);
614                 else
615                         mixart_update_capture_stream_level( chip, is_aes);
616         }
617 
618         stream->channels = channels;
619 
620         /* set the format to the board */
621         err = mixart_set_format(stream, format);
622         if(err < 0) {
623                 mutex_unlock(&mgr->setup_mutex);
624                 return err;
625         }
626 
627         /* allocate buffer */
628         err = snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw));
629 
630         if (err > 0) {
631                 struct mixart_bufferinfo *bufferinfo;
632                 int i = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (stream->pcm_number * (MIXART_PLAYBACK_STREAMS+MIXART_CAPTURE_STREAMS)) + subs->number;
633                 if( subs->stream == SNDRV_PCM_STREAM_CAPTURE ) {
634                         i += MIXART_PLAYBACK_STREAMS; /* in array capture is behind playback */
635                 }
636                 
637                 bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
638                 bufferinfo[i].buffer_address = subs->runtime->dma_addr;
639                 bufferinfo[i].available_length = subs->runtime->dma_bytes;
640                 /* bufferinfo[i].buffer_id  is already defined */
641 
642                 dev_dbg(chip->card->dev,
643                         "snd_mixart_hw_params(pcm %d) : dma_addr(%x) dma_bytes(%x) subs-number(%d)\n",
644                         i, bufferinfo[i].buffer_address,
645                                 bufferinfo[i].available_length,
646                                 subs->number);
647         }
648         mutex_unlock(&mgr->setup_mutex);
649 
650         return err;
651 }
652 
653 static int snd_mixart_hw_free(struct snd_pcm_substream *subs)
654 {
655         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
656         snd_pcm_lib_free_pages(subs);
657         mixart_sync_nonblock_events(chip->mgr);
658         return 0;
659 }
660 
661 
662 
663 /*
664  *  TODO CONFIGURATION SPACE for all pcms, mono pcm must update channels_max
665  */
666 static const struct snd_pcm_hardware snd_mixart_analog_caps =
667 {
668         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
669                               SNDRV_PCM_INFO_MMAP_VALID |
670                               SNDRV_PCM_INFO_PAUSE),
671         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
672                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
673                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
674                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
675         .rates            = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
676         .rate_min         = 8000,
677         .rate_max         = 48000,
678         .channels_min     = 1,
679         .channels_max     = 2,
680         .buffer_bytes_max = (32*1024),
681         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
682         .period_bytes_max = (16*1024),
683         .periods_min      = 2,
684         .periods_max      = (32*1024/256),
685 };
686 
687 static const struct snd_pcm_hardware snd_mixart_digital_caps =
688 {
689         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
690                               SNDRV_PCM_INFO_MMAP_VALID |
691                               SNDRV_PCM_INFO_PAUSE),
692         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
693                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
694                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
695                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
696         .rates            = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
697         .rate_min         = 32000,
698         .rate_max         = 48000,
699         .channels_min     = 1,
700         .channels_max     = 2,
701         .buffer_bytes_max = (32*1024),
702         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
703         .period_bytes_max = (16*1024),
704         .periods_min      = 2,
705         .periods_max      = (32*1024/256),
706 };
707 
708 
709 static int snd_mixart_playback_open(struct snd_pcm_substream *subs)
710 {
711         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
712         struct mixart_mgr        *mgr = chip->mgr;
713         struct snd_pcm_runtime *runtime = subs->runtime;
714         struct snd_pcm *pcm = subs->pcm;
715         struct mixart_stream     *stream;
716         struct mixart_pipe       *pipe;
717         int err = 0;
718         int pcm_number;
719 
720         mutex_lock(&mgr->setup_mutex);
721 
722         if ( pcm == chip->pcm ) {
723                 pcm_number = MIXART_PCM_ANALOG;
724                 runtime->hw = snd_mixart_analog_caps;
725         } else {
726                 snd_BUG_ON(pcm != chip->pcm_dig);
727                 pcm_number = MIXART_PCM_DIGITAL;
728                 runtime->hw = snd_mixart_digital_caps;
729         }
730         dev_dbg(chip->card->dev,
731                 "snd_mixart_playback_open C%d/P%d/Sub%d\n",
732                 chip->chip_idx, pcm_number, subs->number);
733 
734         /* get stream info */
735         stream = &(chip->playback_stream[pcm_number][subs->number]);
736 
737         if (stream->status != MIXART_STREAM_STATUS_FREE){
738                 /* streams in use */
739                 dev_err(chip->card->dev,
740                         "snd_mixart_playback_open C%d/P%d/Sub%d in use\n",
741                         chip->chip_idx, pcm_number, subs->number);
742                 err = -EBUSY;
743                 goto _exit_open;
744         }
745 
746         /* get pipe pointer (out pipe) */
747         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 0, 0);
748 
749         if (pipe == NULL) {
750                 err = -EINVAL;
751                 goto _exit_open;
752         }
753 
754         /* start the pipe if necessary */
755         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
756         if( err < 0 ) {
757                 dev_err(chip->card->dev, "error starting pipe!\n");
758                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
759                 err = -EINVAL;
760                 goto _exit_open;
761         }
762 
763         stream->pipe        = pipe;
764         stream->pcm_number  = pcm_number;
765         stream->status      = MIXART_STREAM_STATUS_OPEN;
766         stream->substream   = subs;
767         stream->channels    = 0; /* not configured yet */
768 
769         runtime->private_data = stream;
770 
771         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
772         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
773 
774         /* if a sample rate is already used, another stream cannot change */
775         if(mgr->ref_count_rate++) {
776                 if(mgr->sample_rate) {
777                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
778                 }
779         }
780 
781  _exit_open:
782         mutex_unlock(&mgr->setup_mutex);
783 
784         return err;
785 }
786 
787 
788 static int snd_mixart_capture_open(struct snd_pcm_substream *subs)
789 {
790         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
791         struct mixart_mgr        *mgr = chip->mgr;
792         struct snd_pcm_runtime *runtime = subs->runtime;
793         struct snd_pcm *pcm = subs->pcm;
794         struct mixart_stream     *stream;
795         struct mixart_pipe       *pipe;
796         int err = 0;
797         int pcm_number;
798 
799         mutex_lock(&mgr->setup_mutex);
800 
801         if ( pcm == chip->pcm ) {
802                 pcm_number = MIXART_PCM_ANALOG;
803                 runtime->hw = snd_mixart_analog_caps;
804         } else {
805                 snd_BUG_ON(pcm != chip->pcm_dig);
806                 pcm_number = MIXART_PCM_DIGITAL;
807                 runtime->hw = snd_mixart_digital_caps;
808         }
809 
810         runtime->hw.channels_min = 2; /* for instance, no mono */
811 
812         dev_dbg(chip->card->dev, "snd_mixart_capture_open C%d/P%d/Sub%d\n",
813                 chip->chip_idx, pcm_number, subs->number);
814 
815         /* get stream info */
816         stream = &(chip->capture_stream[pcm_number]);
817 
818         if (stream->status != MIXART_STREAM_STATUS_FREE){
819                 /* streams in use */
820                 dev_err(chip->card->dev,
821                         "snd_mixart_capture_open C%d/P%d/Sub%d in use\n",
822                         chip->chip_idx, pcm_number, subs->number);
823                 err = -EBUSY;
824                 goto _exit_open;
825         }
826 
827         /* get pipe pointer (in pipe) */
828         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 1, 0);
829 
830         if (pipe == NULL) {
831                 err = -EINVAL;
832                 goto _exit_open;
833         }
834 
835         /* start the pipe if necessary */
836         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
837         if( err < 0 ) {
838                 dev_err(chip->card->dev, "error starting pipe!\n");
839                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
840                 err = -EINVAL;
841                 goto _exit_open;
842         }
843 
844         stream->pipe        = pipe;
845         stream->pcm_number  = pcm_number;
846         stream->status      = MIXART_STREAM_STATUS_OPEN;
847         stream->substream   = subs;
848         stream->channels    = 0; /* not configured yet */
849 
850         runtime->private_data = stream;
851 
852         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
853         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
854 
855         /* if a sample rate is already used, another stream cannot change */
856         if(mgr->ref_count_rate++) {
857                 if(mgr->sample_rate) {
858                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
859                 }
860         }
861 
862  _exit_open:
863         mutex_unlock(&mgr->setup_mutex);
864 
865         return err;
866 }
867 
868 
869 
870 static int snd_mixart_close(struct snd_pcm_substream *subs)
871 {
872         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
873         struct mixart_mgr *mgr = chip->mgr;
874         struct mixart_stream *stream = subs->runtime->private_data;
875 
876         mutex_lock(&mgr->setup_mutex);
877 
878         dev_dbg(chip->card->dev, "snd_mixart_close C%d/P%d/Sub%d\n",
879                 chip->chip_idx, stream->pcm_number, subs->number);
880 
881         /* sample rate released */
882         if(--mgr->ref_count_rate == 0) {
883                 mgr->sample_rate = 0;
884         }
885 
886         /* delete pipe */
887         if (snd_mixart_kill_ref_pipe(mgr, stream->pipe, 0 ) < 0) {
888 
889                 dev_err(chip->card->dev,
890                         "error snd_mixart_kill_ref_pipe C%dP%d\n",
891                         chip->chip_idx, stream->pcm_number);
892         }
893 
894         stream->pipe      = NULL;
895         stream->status    = MIXART_STREAM_STATUS_FREE;
896         stream->substream = NULL;
897 
898         mutex_unlock(&mgr->setup_mutex);
899         return 0;
900 }
901 
902 
903 static snd_pcm_uframes_t snd_mixart_stream_pointer(struct snd_pcm_substream *subs)
904 {
905         struct snd_pcm_runtime *runtime = subs->runtime;
906         struct mixart_stream   *stream  = runtime->private_data;
907 
908         return (snd_pcm_uframes_t)((stream->buf_periods * runtime->period_size) + stream->buf_period_frag);
909 }
910 
911 
912 
913 static const struct snd_pcm_ops snd_mixart_playback_ops = {
914         .open      = snd_mixart_playback_open,
915         .close     = snd_mixart_close,
916         .ioctl     = snd_pcm_lib_ioctl,
917         .prepare   = snd_mixart_prepare,
918         .hw_params = snd_mixart_hw_params,
919         .hw_free   = snd_mixart_hw_free,
920         .trigger   = snd_mixart_trigger,
921         .pointer   = snd_mixart_stream_pointer,
922 };
923 
924 static const struct snd_pcm_ops snd_mixart_capture_ops = {
925         .open      = snd_mixart_capture_open,
926         .close     = snd_mixart_close,
927         .ioctl     = snd_pcm_lib_ioctl,
928         .prepare   = snd_mixart_prepare,
929         .hw_params = snd_mixart_hw_params,
930         .hw_free   = snd_mixart_hw_free,
931         .trigger   = snd_mixart_trigger,
932         .pointer   = snd_mixart_stream_pointer,
933 };
934 
935 static void preallocate_buffers(struct snd_mixart *chip, struct snd_pcm *pcm)
936 {
937 #if 0
938         struct snd_pcm_substream *subs;
939         int stream;
940 
941         for (stream = 0; stream < 2; stream++) {
942                 int idx = 0;
943                 for (subs = pcm->streams[stream].substream; subs; subs = subs->next, idx++)
944                         /* set up the unique device id with the chip index */
945                         subs->dma_device.id = subs->pcm->device << 16 |
946                                 subs->stream << 8 | (subs->number + 1) |
947                                 (chip->chip_idx + 1) << 24;
948         }
949 #endif
950         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
951                                               snd_dma_pci_data(chip->mgr->pci), 32*1024, 32*1024);
952 }
953 
954 /*
955  */
956 static int snd_mixart_pcm_analog(struct snd_mixart *chip)
957 {
958         int err;
959         struct snd_pcm *pcm;
960         char name[32];
961 
962         sprintf(name, "miXart analog %d", chip->chip_idx);
963         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_ANALOG,
964                                MIXART_PLAYBACK_STREAMS,
965                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
966                 dev_err(chip->card->dev,
967                         "cannot create the analog pcm %d\n", chip->chip_idx);
968                 return err;
969         }
970 
971         pcm->private_data = chip;
972 
973         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
974         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
975 
976         pcm->info_flags = 0;
977         pcm->nonatomic = true;
978         strcpy(pcm->name, name);
979 
980         preallocate_buffers(chip, pcm);
981 
982         chip->pcm = pcm;
983         return 0;
984 }
985 
986 
987 /*
988  */
989 static int snd_mixart_pcm_digital(struct snd_mixart *chip)
990 {
991         int err;
992         struct snd_pcm *pcm;
993         char name[32];
994 
995         sprintf(name, "miXart AES/EBU %d", chip->chip_idx);
996         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_DIGITAL,
997                                MIXART_PLAYBACK_STREAMS,
998                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
999                 dev_err(chip->card->dev,
1000                         "cannot create the digital pcm %d\n", chip->chip_idx);
1001                 return err;
1002         }
1003 
1004         pcm->private_data = chip;
1005 
1006         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
1007         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
1008 
1009         pcm->info_flags = 0;
1010         pcm->nonatomic = true;
1011         strcpy(pcm->name, name);
1012 
1013         preallocate_buffers(chip, pcm);
1014 
1015         chip->pcm_dig = pcm;
1016         return 0;
1017 }
1018 
1019 static int snd_mixart_chip_free(struct snd_mixart *chip)
1020 {
1021         kfree(chip);
1022         return 0;
1023 }
1024 
1025 static int snd_mixart_chip_dev_free(struct snd_device *device)
1026 {
1027         struct snd_mixart *chip = device->device_data;
1028         return snd_mixart_chip_free(chip);
1029 }
1030 
1031 
1032 /*
1033  */
1034 static int snd_mixart_create(struct mixart_mgr *mgr, struct snd_card *card, int idx)
1035 {
1036         int err;
1037         struct snd_mixart *chip;
1038         static struct snd_device_ops ops = {
1039                 .dev_free = snd_mixart_chip_dev_free,
1040         };
1041 
1042         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1043         if (!chip)
1044                 return -ENOMEM;
1045 
1046         chip->card = card;
1047         chip->chip_idx = idx;
1048         chip->mgr = mgr;
1049 
1050         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1051                 snd_mixart_chip_free(chip);
1052                 return err;
1053         }
1054 
1055         mgr->chip[idx] = chip;
1056         return 0;
1057 }
1058 
1059 int snd_mixart_create_pcm(struct snd_mixart* chip)
1060 {
1061         int err;
1062 
1063         err = snd_mixart_pcm_analog(chip);
1064         if (err < 0)
1065                 return err;
1066 
1067         if(chip->mgr->board_type == MIXART_DAUGHTER_TYPE_AES) {
1068 
1069                 err = snd_mixart_pcm_digital(chip);
1070                 if (err < 0)
1071                         return err;
1072         }
1073         return err;
1074 }
1075 
1076 
1077 /*
1078  * release all the cards assigned to a manager instance
1079  */
1080 static int snd_mixart_free(struct mixart_mgr *mgr)
1081 {
1082         unsigned int i;
1083 
1084         for (i = 0; i < mgr->num_cards; i++) {
1085                 if (mgr->chip[i])
1086                         snd_card_free(mgr->chip[i]->card);
1087         }
1088 
1089         /* stop mailbox */
1090         snd_mixart_exit_mailbox(mgr);
1091 
1092         /* release irq  */
1093         if (mgr->irq >= 0)
1094                 free_irq(mgr->irq, mgr);
1095 
1096         /* reset board if some firmware was loaded */
1097         if(mgr->dsp_loaded) {
1098                 snd_mixart_reset_board(mgr);
1099                 dev_dbg(&mgr->pci->dev, "reset miXart !\n");
1100         }
1101 
1102         /* release the i/o ports */
1103         for (i = 0; i < 2; ++i)
1104                 iounmap(mgr->mem[i].virt);
1105 
1106         pci_release_regions(mgr->pci);
1107 
1108         /* free flowarray */
1109         if(mgr->flowinfo.area) {
1110                 snd_dma_free_pages(&mgr->flowinfo);
1111                 mgr->flowinfo.area = NULL;
1112         }
1113         /* free bufferarray */
1114         if(mgr->bufferinfo.area) {
1115                 snd_dma_free_pages(&mgr->bufferinfo);
1116                 mgr->bufferinfo.area = NULL;
1117         }
1118 
1119         pci_disable_device(mgr->pci);
1120         kfree(mgr);
1121         return 0;
1122 }
1123 
1124 /*
1125  * proc interface
1126  */
1127 
1128 /*
1129   mixart_BA0 proc interface for BAR 0 - read callback
1130  */
1131 static ssize_t snd_mixart_BA0_read(struct snd_info_entry *entry,
1132                                    void *file_private_data,
1133                                    struct file *file, char __user *buf,
1134                                    size_t count, loff_t pos)
1135 {
1136         struct mixart_mgr *mgr = entry->private_data;
1137 
1138         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1139         if (copy_to_user_fromio(buf, MIXART_MEM(mgr, pos), count))
1140                 return -EFAULT;
1141         return count;
1142 }
1143 
1144 /*
1145   mixart_BA1 proc interface for BAR 1 - read callback
1146  */
1147 static ssize_t snd_mixart_BA1_read(struct snd_info_entry *entry,
1148                                    void *file_private_data,
1149                                    struct file *file, char __user *buf,
1150                                    size_t count, loff_t pos)
1151 {
1152         struct mixart_mgr *mgr = entry->private_data;
1153 
1154         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1155         if (copy_to_user_fromio(buf, MIXART_REG(mgr, pos), count))
1156                 return -EFAULT;
1157         return count;
1158 }
1159 
1160 static struct snd_info_entry_ops snd_mixart_proc_ops_BA0 = {
1161         .read   = snd_mixart_BA0_read,
1162 };
1163 
1164 static struct snd_info_entry_ops snd_mixart_proc_ops_BA1 = {
1165         .read   = snd_mixart_BA1_read,
1166 };
1167 
1168 
1169 static void snd_mixart_proc_read(struct snd_info_entry *entry, 
1170                                  struct snd_info_buffer *buffer)
1171 {
1172         struct snd_mixart *chip = entry->private_data;        
1173         u32 ref; 
1174 
1175         snd_iprintf(buffer, "Digigram miXart (alsa card %d)\n\n", chip->chip_idx);
1176 
1177         /* stats available when embedded OS is running */
1178         if (chip->mgr->dsp_loaded & ( 1 << MIXART_MOTHERBOARD_ELF_INDEX)) {
1179                 snd_iprintf(buffer, "- hardware -\n");
1180                 switch (chip->mgr->board_type ) {
1181                 case MIXART_DAUGHTER_TYPE_NONE     : snd_iprintf(buffer, "\tmiXart8 (no daughter board)\n\n"); break;
1182                 case MIXART_DAUGHTER_TYPE_AES      : snd_iprintf(buffer, "\tmiXart8 AES/EBU\n\n"); break;
1183                 case MIXART_DAUGHTER_TYPE_COBRANET : snd_iprintf(buffer, "\tmiXart8 Cobranet\n\n"); break;
1184                 default:                             snd_iprintf(buffer, "\tUNKNOWN!\n\n"); break;
1185                 }
1186 
1187                 snd_iprintf(buffer, "- system load -\n");        
1188 
1189                 /* get perf reference */
1190 
1191                 ref = readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_SYSTEM_LOAD_OFFSET));
1192 
1193                 if (ref) {
1194                         u32 mailbox   = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_MAILBX_LOAD_OFFSET)) / ref;
1195                         u32 streaming = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_STREAM_LOAD_OFFSET)) / ref;
1196                         u32 interr    = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_INTERR_LOAD_OFFSET)) / ref;
1197 
1198                         snd_iprintf(buffer, "\tstreaming          : %d\n", streaming);
1199                         snd_iprintf(buffer, "\tmailbox            : %d\n", mailbox);
1200                         snd_iprintf(buffer, "\tinterrupts handling : %d\n\n", interr);
1201                 }
1202         } /* endif elf loaded */
1203 }
1204 
1205 static void snd_mixart_proc_init(struct snd_mixart *chip)
1206 {
1207         struct snd_info_entry *entry;
1208 
1209         /* text interface to read perf and temp meters */
1210         snd_card_ro_proc_new(chip->card, "board_info", chip,
1211                              snd_mixart_proc_read);
1212 
1213         if (! snd_card_proc_new(chip->card, "mixart_BA0", &entry)) {
1214                 entry->content = SNDRV_INFO_CONTENT_DATA;
1215                 entry->private_data = chip->mgr;        
1216                 entry->c.ops = &snd_mixart_proc_ops_BA0;
1217                 entry->size = MIXART_BA0_SIZE;
1218         }
1219         if (! snd_card_proc_new(chip->card, "mixart_BA1", &entry)) {
1220                 entry->content = SNDRV_INFO_CONTENT_DATA;
1221                 entry->private_data = chip->mgr;
1222                 entry->c.ops = &snd_mixart_proc_ops_BA1;
1223                 entry->size = MIXART_BA1_SIZE;
1224         }
1225 }
1226 /* end of proc interface */
1227 
1228 
1229 /*
1230  *    probe function - creates the card manager
1231  */
1232 static int snd_mixart_probe(struct pci_dev *pci,
1233                             const struct pci_device_id *pci_id)
1234 {
1235         static int dev;
1236         struct mixart_mgr *mgr;
1237         unsigned int i;
1238         int err;
1239         size_t size;
1240 
1241         /*
1242          */
1243         if (dev >= SNDRV_CARDS)
1244                 return -ENODEV;
1245         if (! enable[dev]) {
1246                 dev++;
1247                 return -ENOENT;
1248         }
1249 
1250         /* enable PCI device */
1251         if ((err = pci_enable_device(pci)) < 0)
1252                 return err;
1253         pci_set_master(pci);
1254 
1255         /* check if we can restrict PCI DMA transfers to 32 bits */
1256         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) {
1257                 dev_err(&pci->dev,
1258                         "architecture does not support 32bit PCI busmaster DMA\n");
1259                 pci_disable_device(pci);
1260                 return -ENXIO;
1261         }
1262 
1263         /*
1264          */
1265         mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1266         if (! mgr) {
1267                 pci_disable_device(pci);
1268                 return -ENOMEM;
1269         }
1270 
1271         mgr->pci = pci;
1272         mgr->irq = -1;
1273 
1274         /* resource assignment */
1275         if ((err = pci_request_regions(pci, CARD_NAME)) < 0) {
1276                 kfree(mgr);
1277                 pci_disable_device(pci);
1278                 return err;
1279         }
1280         for (i = 0; i < 2; i++) {
1281                 mgr->mem[i].phys = pci_resource_start(pci, i);
1282                 mgr->mem[i].virt = pci_ioremap_bar(pci, i);
1283                 if (!mgr->mem[i].virt) {
1284                         dev_err(&pci->dev, "unable to remap resource 0x%lx\n",
1285                                mgr->mem[i].phys);
1286                         snd_mixart_free(mgr);
1287                         return -EBUSY;
1288                 }
1289         }
1290 
1291         if (request_threaded_irq(pci->irq, snd_mixart_interrupt,
1292                                  snd_mixart_threaded_irq, IRQF_SHARED,
1293                                  KBUILD_MODNAME, mgr)) {
1294                 dev_err(&pci->dev, "unable to grab IRQ %d\n", pci->irq);
1295                 snd_mixart_free(mgr);
1296                 return -EBUSY;
1297         }
1298         mgr->irq = pci->irq;
1299 
1300         /* init mailbox  */
1301         mgr->msg_fifo_readptr = 0;
1302         mgr->msg_fifo_writeptr = 0;
1303 
1304         mutex_init(&mgr->lock);
1305         mutex_init(&mgr->msg_lock);
1306         init_waitqueue_head(&mgr->msg_sleep);
1307         atomic_set(&mgr->msg_processed, 0);
1308 
1309         /* init setup mutex*/
1310         mutex_init(&mgr->setup_mutex);
1311 
1312         /* card assignment */
1313         mgr->num_cards = MIXART_MAX_CARDS; /* 4  FIXME: configurable? */
1314         for (i = 0; i < mgr->num_cards; i++) {
1315                 struct snd_card *card;
1316                 char tmpid[16];
1317                 int idx;
1318 
1319                 if (index[dev] < 0)
1320                         idx = index[dev];
1321                 else
1322                         idx = index[dev] + i;
1323                 snprintf(tmpid, sizeof(tmpid), "%s-%d", id[dev] ? id[dev] : "MIXART", i);
1324                 err = snd_card_new(&pci->dev, idx, tmpid, THIS_MODULE,
1325                                    0, &card);
1326 
1327                 if (err < 0) {
1328                         dev_err(&pci->dev, "cannot allocate the card %d\n", i);
1329                         snd_mixart_free(mgr);
1330                         return err;
1331                 }
1332 
1333                 strcpy(card->driver, CARD_NAME);
1334                 snprintf(card->shortname, sizeof(card->shortname),
1335                          "Digigram miXart [PCM #%d]", i);
1336                 snprintf(card->longname, sizeof(card->longname),
1337                         "Digigram miXart at 0x%lx & 0x%lx, irq %i [PCM #%d]",
1338                         mgr->mem[0].phys, mgr->mem[1].phys, mgr->irq, i);
1339 
1340                 if ((err = snd_mixart_create(mgr, card, i)) < 0) {
1341                         snd_card_free(card);
1342                         snd_mixart_free(mgr);
1343                         return err;
1344                 }
1345 
1346                 if(i==0) {
1347                         /* init proc interface only for chip0 */
1348                         snd_mixart_proc_init(mgr->chip[i]);
1349                 }
1350 
1351                 if ((err = snd_card_register(card)) < 0) {
1352                         snd_mixart_free(mgr);
1353                         return err;
1354                 }
1355         }
1356 
1357         /* init firmware status (mgr->dsp_loaded reset in hwdep_new) */
1358         mgr->board_type = MIXART_DAUGHTER_TYPE_NONE;
1359 
1360         /* create array of streaminfo */
1361         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1362                             sizeof(struct mixart_flowinfo)) );
1363         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1364                                 size, &mgr->flowinfo) < 0) {
1365                 snd_mixart_free(mgr);
1366                 return -ENOMEM;
1367         }
1368         /* init streaminfo_array */
1369         memset(mgr->flowinfo.area, 0, size);
1370 
1371         /* create array of bufferinfo */
1372         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1373                             sizeof(struct mixart_bufferinfo)) );
1374         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1375                                 size, &mgr->bufferinfo) < 0) {
1376                 snd_mixart_free(mgr);
1377                 return -ENOMEM;
1378         }
1379         /* init bufferinfo_array */
1380         memset(mgr->bufferinfo.area, 0, size);
1381 
1382         /* set up firmware */
1383         err = snd_mixart_setup_firmware(mgr);
1384         if (err < 0) {
1385                 snd_mixart_free(mgr);
1386                 return err;
1387         }
1388 
1389         pci_set_drvdata(pci, mgr);
1390         dev++;
1391         return 0;
1392 }
1393 
1394 static void snd_mixart_remove(struct pci_dev *pci)
1395 {
1396         snd_mixart_free(pci_get_drvdata(pci));
1397 }
1398 
1399 static struct pci_driver mixart_driver = {
1400         .name = KBUILD_MODNAME,
1401         .id_table = snd_mixart_ids,
1402         .probe = snd_mixart_probe,
1403         .remove = snd_mixart_remove,
1404 };
1405 
1406 module_pci_driver(mixart_driver);
1407 

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