ALSA: info: Make snd_info_entry_ops as const
[muen/linux.git] / sound / pci / mixart / mixart.c
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         if (subs->runtime->buffer_changed) {
628                 struct mixart_bufferinfo *bufferinfo;
629                 int i = (chip->chip_idx * MIXART_MAX_STREAM_PER_CARD) + (stream->pcm_number * (MIXART_PLAYBACK_STREAMS+MIXART_CAPTURE_STREAMS)) + subs->number;
630                 if( subs->stream == SNDRV_PCM_STREAM_CAPTURE ) {
631                         i += MIXART_PLAYBACK_STREAMS; /* in array capture is behind playback */
632                 }
633                 
634                 bufferinfo = (struct mixart_bufferinfo *)chip->mgr->bufferinfo.area;
635                 bufferinfo[i].buffer_address = subs->runtime->dma_addr;
636                 bufferinfo[i].available_length = subs->runtime->dma_bytes;
637                 /* bufferinfo[i].buffer_id  is already defined */
638
639                 dev_dbg(chip->card->dev,
640                         "snd_mixart_hw_params(pcm %d) : dma_addr(%x) dma_bytes(%x) subs-number(%d)\n",
641                         i, bufferinfo[i].buffer_address,
642                                 bufferinfo[i].available_length,
643                                 subs->number);
644         }
645         mutex_unlock(&mgr->setup_mutex);
646
647         return 0;
648 }
649
650 static int snd_mixart_hw_free(struct snd_pcm_substream *subs)
651 {
652         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
653         mixart_sync_nonblock_events(chip->mgr);
654         return 0;
655 }
656
657
658
659 /*
660  *  TODO CONFIGURATION SPACE for all pcms, mono pcm must update channels_max
661  */
662 static const struct snd_pcm_hardware snd_mixart_analog_caps =
663 {
664         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
665                               SNDRV_PCM_INFO_MMAP_VALID |
666                               SNDRV_PCM_INFO_PAUSE),
667         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
668                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
669                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
670                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
671         .rates            = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
672         .rate_min         = 8000,
673         .rate_max         = 48000,
674         .channels_min     = 1,
675         .channels_max     = 2,
676         .buffer_bytes_max = (32*1024),
677         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
678         .period_bytes_max = (16*1024),
679         .periods_min      = 2,
680         .periods_max      = (32*1024/256),
681 };
682
683 static const struct snd_pcm_hardware snd_mixart_digital_caps =
684 {
685         .info             = ( SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
686                               SNDRV_PCM_INFO_MMAP_VALID |
687                               SNDRV_PCM_INFO_PAUSE),
688         .formats          = ( SNDRV_PCM_FMTBIT_U8 |
689                               SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
690                               SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
691                               SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE ),
692         .rates            = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
693         .rate_min         = 32000,
694         .rate_max         = 48000,
695         .channels_min     = 1,
696         .channels_max     = 2,
697         .buffer_bytes_max = (32*1024),
698         .period_bytes_min = 256,                  /* 256 frames U8 mono*/
699         .period_bytes_max = (16*1024),
700         .periods_min      = 2,
701         .periods_max      = (32*1024/256),
702 };
703
704
705 static int snd_mixart_playback_open(struct snd_pcm_substream *subs)
706 {
707         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
708         struct mixart_mgr        *mgr = chip->mgr;
709         struct snd_pcm_runtime *runtime = subs->runtime;
710         struct snd_pcm *pcm = subs->pcm;
711         struct mixart_stream     *stream;
712         struct mixart_pipe       *pipe;
713         int err = 0;
714         int pcm_number;
715
716         mutex_lock(&mgr->setup_mutex);
717
718         if ( pcm == chip->pcm ) {
719                 pcm_number = MIXART_PCM_ANALOG;
720                 runtime->hw = snd_mixart_analog_caps;
721         } else {
722                 snd_BUG_ON(pcm != chip->pcm_dig);
723                 pcm_number = MIXART_PCM_DIGITAL;
724                 runtime->hw = snd_mixart_digital_caps;
725         }
726         dev_dbg(chip->card->dev,
727                 "snd_mixart_playback_open C%d/P%d/Sub%d\n",
728                 chip->chip_idx, pcm_number, subs->number);
729
730         /* get stream info */
731         stream = &(chip->playback_stream[pcm_number][subs->number]);
732
733         if (stream->status != MIXART_STREAM_STATUS_FREE){
734                 /* streams in use */
735                 dev_err(chip->card->dev,
736                         "snd_mixart_playback_open C%d/P%d/Sub%d in use\n",
737                         chip->chip_idx, pcm_number, subs->number);
738                 err = -EBUSY;
739                 goto _exit_open;
740         }
741
742         /* get pipe pointer (out pipe) */
743         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 0, 0);
744
745         if (pipe == NULL) {
746                 err = -EINVAL;
747                 goto _exit_open;
748         }
749
750         /* start the pipe if necessary */
751         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
752         if( err < 0 ) {
753                 dev_err(chip->card->dev, "error starting pipe!\n");
754                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
755                 err = -EINVAL;
756                 goto _exit_open;
757         }
758
759         stream->pipe        = pipe;
760         stream->pcm_number  = pcm_number;
761         stream->status      = MIXART_STREAM_STATUS_OPEN;
762         stream->substream   = subs;
763         stream->channels    = 0; /* not configured yet */
764
765         runtime->private_data = stream;
766
767         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
768         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
769
770         /* if a sample rate is already used, another stream cannot change */
771         if(mgr->ref_count_rate++) {
772                 if(mgr->sample_rate) {
773                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
774                 }
775         }
776
777  _exit_open:
778         mutex_unlock(&mgr->setup_mutex);
779
780         return err;
781 }
782
783
784 static int snd_mixart_capture_open(struct snd_pcm_substream *subs)
785 {
786         struct snd_mixart            *chip = snd_pcm_substream_chip(subs);
787         struct mixart_mgr        *mgr = chip->mgr;
788         struct snd_pcm_runtime *runtime = subs->runtime;
789         struct snd_pcm *pcm = subs->pcm;
790         struct mixart_stream     *stream;
791         struct mixart_pipe       *pipe;
792         int err = 0;
793         int pcm_number;
794
795         mutex_lock(&mgr->setup_mutex);
796
797         if ( pcm == chip->pcm ) {
798                 pcm_number = MIXART_PCM_ANALOG;
799                 runtime->hw = snd_mixart_analog_caps;
800         } else {
801                 snd_BUG_ON(pcm != chip->pcm_dig);
802                 pcm_number = MIXART_PCM_DIGITAL;
803                 runtime->hw = snd_mixart_digital_caps;
804         }
805
806         runtime->hw.channels_min = 2; /* for instance, no mono */
807
808         dev_dbg(chip->card->dev, "snd_mixart_capture_open C%d/P%d/Sub%d\n",
809                 chip->chip_idx, pcm_number, subs->number);
810
811         /* get stream info */
812         stream = &(chip->capture_stream[pcm_number]);
813
814         if (stream->status != MIXART_STREAM_STATUS_FREE){
815                 /* streams in use */
816                 dev_err(chip->card->dev,
817                         "snd_mixart_capture_open C%d/P%d/Sub%d in use\n",
818                         chip->chip_idx, pcm_number, subs->number);
819                 err = -EBUSY;
820                 goto _exit_open;
821         }
822
823         /* get pipe pointer (in pipe) */
824         pipe = snd_mixart_add_ref_pipe(chip, pcm_number, 1, 0);
825
826         if (pipe == NULL) {
827                 err = -EINVAL;
828                 goto _exit_open;
829         }
830
831         /* start the pipe if necessary */
832         err = mixart_set_pipe_state(chip->mgr, pipe, 1);
833         if( err < 0 ) {
834                 dev_err(chip->card->dev, "error starting pipe!\n");
835                 snd_mixart_kill_ref_pipe(chip->mgr, pipe, 0);
836                 err = -EINVAL;
837                 goto _exit_open;
838         }
839
840         stream->pipe        = pipe;
841         stream->pcm_number  = pcm_number;
842         stream->status      = MIXART_STREAM_STATUS_OPEN;
843         stream->substream   = subs;
844         stream->channels    = 0; /* not configured yet */
845
846         runtime->private_data = stream;
847
848         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
849         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 64);
850
851         /* if a sample rate is already used, another stream cannot change */
852         if(mgr->ref_count_rate++) {
853                 if(mgr->sample_rate) {
854                         runtime->hw.rate_min = runtime->hw.rate_max = mgr->sample_rate;
855                 }
856         }
857
858  _exit_open:
859         mutex_unlock(&mgr->setup_mutex);
860
861         return err;
862 }
863
864
865
866 static int snd_mixart_close(struct snd_pcm_substream *subs)
867 {
868         struct snd_mixart *chip = snd_pcm_substream_chip(subs);
869         struct mixart_mgr *mgr = chip->mgr;
870         struct mixart_stream *stream = subs->runtime->private_data;
871
872         mutex_lock(&mgr->setup_mutex);
873
874         dev_dbg(chip->card->dev, "snd_mixart_close C%d/P%d/Sub%d\n",
875                 chip->chip_idx, stream->pcm_number, subs->number);
876
877         /* sample rate released */
878         if(--mgr->ref_count_rate == 0) {
879                 mgr->sample_rate = 0;
880         }
881
882         /* delete pipe */
883         if (snd_mixart_kill_ref_pipe(mgr, stream->pipe, 0 ) < 0) {
884
885                 dev_err(chip->card->dev,
886                         "error snd_mixart_kill_ref_pipe C%dP%d\n",
887                         chip->chip_idx, stream->pcm_number);
888         }
889
890         stream->pipe      = NULL;
891         stream->status    = MIXART_STREAM_STATUS_FREE;
892         stream->substream = NULL;
893
894         mutex_unlock(&mgr->setup_mutex);
895         return 0;
896 }
897
898
899 static snd_pcm_uframes_t snd_mixart_stream_pointer(struct snd_pcm_substream *subs)
900 {
901         struct snd_pcm_runtime *runtime = subs->runtime;
902         struct mixart_stream   *stream  = runtime->private_data;
903
904         return (snd_pcm_uframes_t)((stream->buf_periods * runtime->period_size) + stream->buf_period_frag);
905 }
906
907
908
909 static const struct snd_pcm_ops snd_mixart_playback_ops = {
910         .open      = snd_mixart_playback_open,
911         .close     = snd_mixart_close,
912         .prepare   = snd_mixart_prepare,
913         .hw_params = snd_mixart_hw_params,
914         .hw_free   = snd_mixart_hw_free,
915         .trigger   = snd_mixart_trigger,
916         .pointer   = snd_mixart_stream_pointer,
917 };
918
919 static const struct snd_pcm_ops snd_mixart_capture_ops = {
920         .open      = snd_mixart_capture_open,
921         .close     = snd_mixart_close,
922         .prepare   = snd_mixart_prepare,
923         .hw_params = snd_mixart_hw_params,
924         .hw_free   = snd_mixart_hw_free,
925         .trigger   = snd_mixart_trigger,
926         .pointer   = snd_mixart_stream_pointer,
927 };
928
929 static void preallocate_buffers(struct snd_mixart *chip, struct snd_pcm *pcm)
930 {
931 #if 0
932         struct snd_pcm_substream *subs;
933         int stream;
934
935         for (stream = 0; stream < 2; stream++) {
936                 int idx = 0;
937                 for (subs = pcm->streams[stream].substream; subs; subs = subs->next, idx++)
938                         /* set up the unique device id with the chip index */
939                         subs->dma_device.id = subs->pcm->device << 16 |
940                                 subs->stream << 8 | (subs->number + 1) |
941                                 (chip->chip_idx + 1) << 24;
942         }
943 #endif
944         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
945                                        &chip->mgr->pci->dev,
946                                        32*1024, 32*1024);
947 }
948
949 /*
950  */
951 static int snd_mixart_pcm_analog(struct snd_mixart *chip)
952 {
953         int err;
954         struct snd_pcm *pcm;
955         char name[32];
956
957         sprintf(name, "miXart analog %d", chip->chip_idx);
958         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_ANALOG,
959                                MIXART_PLAYBACK_STREAMS,
960                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
961                 dev_err(chip->card->dev,
962                         "cannot create the analog pcm %d\n", chip->chip_idx);
963                 return err;
964         }
965
966         pcm->private_data = chip;
967
968         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
969         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
970
971         pcm->info_flags = 0;
972         pcm->nonatomic = true;
973         strcpy(pcm->name, name);
974
975         preallocate_buffers(chip, pcm);
976
977         chip->pcm = pcm;
978         return 0;
979 }
980
981
982 /*
983  */
984 static int snd_mixart_pcm_digital(struct snd_mixart *chip)
985 {
986         int err;
987         struct snd_pcm *pcm;
988         char name[32];
989
990         sprintf(name, "miXart AES/EBU %d", chip->chip_idx);
991         if ((err = snd_pcm_new(chip->card, name, MIXART_PCM_DIGITAL,
992                                MIXART_PLAYBACK_STREAMS,
993                                MIXART_CAPTURE_STREAMS, &pcm)) < 0) {
994                 dev_err(chip->card->dev,
995                         "cannot create the digital pcm %d\n", chip->chip_idx);
996                 return err;
997         }
998
999         pcm->private_data = chip;
1000
1001         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_mixart_playback_ops);
1002         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_mixart_capture_ops);
1003
1004         pcm->info_flags = 0;
1005         pcm->nonatomic = true;
1006         strcpy(pcm->name, name);
1007
1008         preallocate_buffers(chip, pcm);
1009
1010         chip->pcm_dig = pcm;
1011         return 0;
1012 }
1013
1014 static int snd_mixart_chip_free(struct snd_mixart *chip)
1015 {
1016         kfree(chip);
1017         return 0;
1018 }
1019
1020 static int snd_mixart_chip_dev_free(struct snd_device *device)
1021 {
1022         struct snd_mixart *chip = device->device_data;
1023         return snd_mixart_chip_free(chip);
1024 }
1025
1026
1027 /*
1028  */
1029 static int snd_mixart_create(struct mixart_mgr *mgr, struct snd_card *card, int idx)
1030 {
1031         int err;
1032         struct snd_mixart *chip;
1033         static const struct snd_device_ops ops = {
1034                 .dev_free = snd_mixart_chip_dev_free,
1035         };
1036
1037         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1038         if (!chip)
1039                 return -ENOMEM;
1040
1041         chip->card = card;
1042         chip->chip_idx = idx;
1043         chip->mgr = mgr;
1044         card->sync_irq = mgr->irq;
1045
1046         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1047                 snd_mixart_chip_free(chip);
1048                 return err;
1049         }
1050
1051         mgr->chip[idx] = chip;
1052         return 0;
1053 }
1054
1055 int snd_mixart_create_pcm(struct snd_mixart* chip)
1056 {
1057         int err;
1058
1059         err = snd_mixart_pcm_analog(chip);
1060         if (err < 0)
1061                 return err;
1062
1063         if(chip->mgr->board_type == MIXART_DAUGHTER_TYPE_AES) {
1064
1065                 err = snd_mixart_pcm_digital(chip);
1066                 if (err < 0)
1067                         return err;
1068         }
1069         return err;
1070 }
1071
1072
1073 /*
1074  * release all the cards assigned to a manager instance
1075  */
1076 static int snd_mixart_free(struct mixart_mgr *mgr)
1077 {
1078         unsigned int i;
1079
1080         for (i = 0; i < mgr->num_cards; i++) {
1081                 if (mgr->chip[i])
1082                         snd_card_free(mgr->chip[i]->card);
1083         }
1084
1085         /* stop mailbox */
1086         snd_mixart_exit_mailbox(mgr);
1087
1088         /* release irq  */
1089         if (mgr->irq >= 0)
1090                 free_irq(mgr->irq, mgr);
1091
1092         /* reset board if some firmware was loaded */
1093         if(mgr->dsp_loaded) {
1094                 snd_mixart_reset_board(mgr);
1095                 dev_dbg(&mgr->pci->dev, "reset miXart !\n");
1096         }
1097
1098         /* release the i/o ports */
1099         for (i = 0; i < 2; ++i)
1100                 iounmap(mgr->mem[i].virt);
1101
1102         pci_release_regions(mgr->pci);
1103
1104         /* free flowarray */
1105         if(mgr->flowinfo.area) {
1106                 snd_dma_free_pages(&mgr->flowinfo);
1107                 mgr->flowinfo.area = NULL;
1108         }
1109         /* free bufferarray */
1110         if(mgr->bufferinfo.area) {
1111                 snd_dma_free_pages(&mgr->bufferinfo);
1112                 mgr->bufferinfo.area = NULL;
1113         }
1114
1115         pci_disable_device(mgr->pci);
1116         kfree(mgr);
1117         return 0;
1118 }
1119
1120 /*
1121  * proc interface
1122  */
1123
1124 /*
1125   mixart_BA0 proc interface for BAR 0 - read callback
1126  */
1127 static ssize_t snd_mixart_BA0_read(struct snd_info_entry *entry,
1128                                    void *file_private_data,
1129                                    struct file *file, char __user *buf,
1130                                    size_t count, loff_t pos)
1131 {
1132         struct mixart_mgr *mgr = entry->private_data;
1133
1134         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1135         if (copy_to_user_fromio(buf, MIXART_MEM(mgr, pos), count))
1136                 return -EFAULT;
1137         return count;
1138 }
1139
1140 /*
1141   mixart_BA1 proc interface for BAR 1 - read callback
1142  */
1143 static ssize_t snd_mixart_BA1_read(struct snd_info_entry *entry,
1144                                    void *file_private_data,
1145                                    struct file *file, char __user *buf,
1146                                    size_t count, loff_t pos)
1147 {
1148         struct mixart_mgr *mgr = entry->private_data;
1149
1150         count = count & ~3; /* make sure the read size is a multiple of 4 bytes */
1151         if (copy_to_user_fromio(buf, MIXART_REG(mgr, pos), count))
1152                 return -EFAULT;
1153         return count;
1154 }
1155
1156 static const struct snd_info_entry_ops snd_mixart_proc_ops_BA0 = {
1157         .read   = snd_mixart_BA0_read,
1158 };
1159
1160 static const struct snd_info_entry_ops snd_mixart_proc_ops_BA1 = {
1161         .read   = snd_mixart_BA1_read,
1162 };
1163
1164
1165 static void snd_mixart_proc_read(struct snd_info_entry *entry, 
1166                                  struct snd_info_buffer *buffer)
1167 {
1168         struct snd_mixart *chip = entry->private_data;        
1169         u32 ref; 
1170
1171         snd_iprintf(buffer, "Digigram miXart (alsa card %d)\n\n", chip->chip_idx);
1172
1173         /* stats available when embedded OS is running */
1174         if (chip->mgr->dsp_loaded & ( 1 << MIXART_MOTHERBOARD_ELF_INDEX)) {
1175                 snd_iprintf(buffer, "- hardware -\n");
1176                 switch (chip->mgr->board_type ) {
1177                 case MIXART_DAUGHTER_TYPE_NONE     : snd_iprintf(buffer, "\tmiXart8 (no daughter board)\n\n"); break;
1178                 case MIXART_DAUGHTER_TYPE_AES      : snd_iprintf(buffer, "\tmiXart8 AES/EBU\n\n"); break;
1179                 case MIXART_DAUGHTER_TYPE_COBRANET : snd_iprintf(buffer, "\tmiXart8 Cobranet\n\n"); break;
1180                 default:                             snd_iprintf(buffer, "\tUNKNOWN!\n\n"); break;
1181                 }
1182
1183                 snd_iprintf(buffer, "- system load -\n");        
1184
1185                 /* get perf reference */
1186
1187                 ref = readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_SYSTEM_LOAD_OFFSET));
1188
1189                 if (ref) {
1190                         u32 mailbox   = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_MAILBX_LOAD_OFFSET)) / ref;
1191                         u32 streaming = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_STREAM_LOAD_OFFSET)) / ref;
1192                         u32 interr    = 100 * readl_be( MIXART_MEM( chip->mgr, MIXART_PSEUDOREG_PERF_INTERR_LOAD_OFFSET)) / ref;
1193
1194                         snd_iprintf(buffer, "\tstreaming          : %d\n", streaming);
1195                         snd_iprintf(buffer, "\tmailbox            : %d\n", mailbox);
1196                         snd_iprintf(buffer, "\tinterrupts handling : %d\n\n", interr);
1197                 }
1198         } /* endif elf loaded */
1199 }
1200
1201 static void snd_mixart_proc_init(struct snd_mixart *chip)
1202 {
1203         struct snd_info_entry *entry;
1204
1205         /* text interface to read perf and temp meters */
1206         snd_card_ro_proc_new(chip->card, "board_info", chip,
1207                              snd_mixart_proc_read);
1208
1209         if (! snd_card_proc_new(chip->card, "mixart_BA0", &entry)) {
1210                 entry->content = SNDRV_INFO_CONTENT_DATA;
1211                 entry->private_data = chip->mgr;        
1212                 entry->c.ops = &snd_mixart_proc_ops_BA0;
1213                 entry->size = MIXART_BA0_SIZE;
1214         }
1215         if (! snd_card_proc_new(chip->card, "mixart_BA1", &entry)) {
1216                 entry->content = SNDRV_INFO_CONTENT_DATA;
1217                 entry->private_data = chip->mgr;
1218                 entry->c.ops = &snd_mixart_proc_ops_BA1;
1219                 entry->size = MIXART_BA1_SIZE;
1220         }
1221 }
1222 /* end of proc interface */
1223
1224
1225 /*
1226  *    probe function - creates the card manager
1227  */
1228 static int snd_mixart_probe(struct pci_dev *pci,
1229                             const struct pci_device_id *pci_id)
1230 {
1231         static int dev;
1232         struct mixart_mgr *mgr;
1233         unsigned int i;
1234         int err;
1235         size_t size;
1236
1237         /*
1238          */
1239         if (dev >= SNDRV_CARDS)
1240                 return -ENODEV;
1241         if (! enable[dev]) {
1242                 dev++;
1243                 return -ENOENT;
1244         }
1245
1246         /* enable PCI device */
1247         if ((err = pci_enable_device(pci)) < 0)
1248                 return err;
1249         pci_set_master(pci);
1250
1251         /* check if we can restrict PCI DMA transfers to 32 bits */
1252         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) {
1253                 dev_err(&pci->dev,
1254                         "architecture does not support 32bit PCI busmaster DMA\n");
1255                 pci_disable_device(pci);
1256                 return -ENXIO;
1257         }
1258
1259         /*
1260          */
1261         mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1262         if (! mgr) {
1263                 pci_disable_device(pci);
1264                 return -ENOMEM;
1265         }
1266
1267         mgr->pci = pci;
1268         mgr->irq = -1;
1269
1270         /* resource assignment */
1271         if ((err = pci_request_regions(pci, CARD_NAME)) < 0) {
1272                 kfree(mgr);
1273                 pci_disable_device(pci);
1274                 return err;
1275         }
1276         for (i = 0; i < 2; i++) {
1277                 mgr->mem[i].phys = pci_resource_start(pci, i);
1278                 mgr->mem[i].virt = pci_ioremap_bar(pci, i);
1279                 if (!mgr->mem[i].virt) {
1280                         dev_err(&pci->dev, "unable to remap resource 0x%lx\n",
1281                                mgr->mem[i].phys);
1282                         snd_mixart_free(mgr);
1283                         return -EBUSY;
1284                 }
1285         }
1286
1287         if (request_threaded_irq(pci->irq, snd_mixart_interrupt,
1288                                  snd_mixart_threaded_irq, IRQF_SHARED,
1289                                  KBUILD_MODNAME, mgr)) {
1290                 dev_err(&pci->dev, "unable to grab IRQ %d\n", pci->irq);
1291                 snd_mixart_free(mgr);
1292                 return -EBUSY;
1293         }
1294         mgr->irq = pci->irq;
1295
1296         /* init mailbox  */
1297         mgr->msg_fifo_readptr = 0;
1298         mgr->msg_fifo_writeptr = 0;
1299
1300         mutex_init(&mgr->lock);
1301         mutex_init(&mgr->msg_lock);
1302         init_waitqueue_head(&mgr->msg_sleep);
1303         atomic_set(&mgr->msg_processed, 0);
1304
1305         /* init setup mutex*/
1306         mutex_init(&mgr->setup_mutex);
1307
1308         /* card assignment */
1309         mgr->num_cards = MIXART_MAX_CARDS; /* 4  FIXME: configurable? */
1310         for (i = 0; i < mgr->num_cards; i++) {
1311                 struct snd_card *card;
1312                 char tmpid[16];
1313                 int idx;
1314
1315                 if (index[dev] < 0)
1316                         idx = index[dev];
1317                 else
1318                         idx = index[dev] + i;
1319                 snprintf(tmpid, sizeof(tmpid), "%s-%d", id[dev] ? id[dev] : "MIXART", i);
1320                 err = snd_card_new(&pci->dev, idx, tmpid, THIS_MODULE,
1321                                    0, &card);
1322
1323                 if (err < 0) {
1324                         dev_err(&pci->dev, "cannot allocate the card %d\n", i);
1325                         snd_mixart_free(mgr);
1326                         return err;
1327                 }
1328
1329                 strcpy(card->driver, CARD_NAME);
1330                 snprintf(card->shortname, sizeof(card->shortname),
1331                          "Digigram miXart [PCM #%d]", i);
1332                 snprintf(card->longname, sizeof(card->longname),
1333                         "Digigram miXart at 0x%lx & 0x%lx, irq %i [PCM #%d]",
1334                         mgr->mem[0].phys, mgr->mem[1].phys, mgr->irq, i);
1335
1336                 if ((err = snd_mixart_create(mgr, card, i)) < 0) {
1337                         snd_card_free(card);
1338                         snd_mixart_free(mgr);
1339                         return err;
1340                 }
1341
1342                 if(i==0) {
1343                         /* init proc interface only for chip0 */
1344                         snd_mixart_proc_init(mgr->chip[i]);
1345                 }
1346
1347                 if ((err = snd_card_register(card)) < 0) {
1348                         snd_mixart_free(mgr);
1349                         return err;
1350                 }
1351         }
1352
1353         /* init firmware status (mgr->dsp_loaded reset in hwdep_new) */
1354         mgr->board_type = MIXART_DAUGHTER_TYPE_NONE;
1355
1356         /* create array of streaminfo */
1357         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1358                             sizeof(struct mixart_flowinfo)) );
1359         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &pci->dev,
1360                                 size, &mgr->flowinfo) < 0) {
1361                 snd_mixart_free(mgr);
1362                 return -ENOMEM;
1363         }
1364         /* init streaminfo_array */
1365         memset(mgr->flowinfo.area, 0, size);
1366
1367         /* create array of bufferinfo */
1368         size = PAGE_ALIGN( (MIXART_MAX_STREAM_PER_CARD * MIXART_MAX_CARDS *
1369                             sizeof(struct mixart_bufferinfo)) );
1370         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &pci->dev,
1371                                 size, &mgr->bufferinfo) < 0) {
1372                 snd_mixart_free(mgr);
1373                 return -ENOMEM;
1374         }
1375         /* init bufferinfo_array */
1376         memset(mgr->bufferinfo.area, 0, size);
1377
1378         /* set up firmware */
1379         err = snd_mixart_setup_firmware(mgr);
1380         if (err < 0) {
1381                 snd_mixart_free(mgr);
1382                 return err;
1383         }
1384
1385         pci_set_drvdata(pci, mgr);
1386         dev++;
1387         return 0;
1388 }
1389
1390 static void snd_mixart_remove(struct pci_dev *pci)
1391 {
1392         snd_mixart_free(pci_get_drvdata(pci));
1393 }
1394
1395 static struct pci_driver mixart_driver = {
1396         .name = KBUILD_MODNAME,
1397         .id_table = snd_mixart_ids,
1398         .probe = snd_mixart_probe,
1399         .remove = snd_mixart_remove,
1400 };
1401
1402 module_pci_driver(mixart_driver);