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-rw-r--r--sound/pci/echoaudio/echoaudio_dsp.c1125
1 files changed, 1125 insertions, 0 deletions
diff --git a/sound/pci/echoaudio/echoaudio_dsp.c b/sound/pci/echoaudio/echoaudio_dsp.c
new file mode 100644
index 000000000000..42afa837d9b4
--- /dev/null
+++ b/sound/pci/echoaudio/echoaudio_dsp.c
@@ -0,0 +1,1125 @@
1/****************************************************************************
2
3 Copyright Echo Digital Audio Corporation (c) 1998 - 2004
4 All rights reserved
5 www.echoaudio.com
6
7 This file is part of Echo Digital Audio's generic driver library.
8
9 Echo Digital Audio's generic driver library is free software;
10 you can redistribute it and/or modify it under the terms of
11 the GNU General Public License as published by the Free Software
12 Foundation.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 MA 02111-1307, USA.
23
24 *************************************************************************
25
26 Translation from C++ and adaptation for use in ALSA-Driver
27 were made by Giuliano Pochini <pochini@shiny.it>
28
29****************************************************************************/
30
31#if PAGE_SIZE < 4096
32#error PAGE_SIZE is < 4k
33#endif
34
35static int restore_dsp_rettings(struct echoaudio *chip);
36
37
38/* Some vector commands involve the DSP reading or writing data to and from the
39comm page; if you send one of these commands to the DSP, it will complete the
40command and then write a non-zero value to the Handshake field in the
41comm page. This function waits for the handshake to show up. */
42static int wait_handshake(struct echoaudio *chip)
43{
44 int i;
45
46 /* Wait up to 10ms for the handshake from the DSP */
47 for (i = 0; i < HANDSHAKE_TIMEOUT; i++) {
48 /* Look for the handshake value */
49 if (chip->comm_page->handshake) {
50 /*if (i) DE_ACT(("Handshake time: %d\n", i));*/
51 return 0;
52 }
53 udelay(1);
54 }
55
56 snd_printk(KERN_ERR "wait_handshake(): Timeout waiting for DSP\n");
57 return -EBUSY;
58}
59
60
61
62/* Much of the interaction between the DSP and the driver is done via vector
63commands; send_vector writes a vector command to the DSP. Typically, this
64causes the DSP to read or write fields in the comm page.
65PCI posting is not required thanks to the handshake logic. */
66static int send_vector(struct echoaudio *chip, u32 command)
67{
68 int i;
69
70 wmb(); /* Flush all pending writes before sending the command */
71
72 /* Wait up to 100ms for the "vector busy" bit to be off */
73 for (i = 0; i < VECTOR_BUSY_TIMEOUT; i++) {
74 if (!(get_dsp_register(chip, CHI32_VECTOR_REG) &
75 CHI32_VECTOR_BUSY)) {
76 set_dsp_register(chip, CHI32_VECTOR_REG, command);
77 /*if (i) DE_ACT(("send_vector time: %d\n", i));*/
78 return 0;
79 }
80 udelay(1);
81 }
82
83 DE_ACT((KERN_ERR "timeout on send_vector\n"));
84 return -EBUSY;
85}
86
87
88
89/* write_dsp writes a 32-bit value to the DSP; this is used almost
90exclusively for loading the DSP. */
91static int write_dsp(struct echoaudio *chip, u32 data)
92{
93 u32 status, i;
94
95 for (i = 0; i < 10000000; i++) { /* timeout = 10s */
96 status = get_dsp_register(chip, CHI32_STATUS_REG);
97 if ((status & CHI32_STATUS_HOST_WRITE_EMPTY) != 0) {
98 set_dsp_register(chip, CHI32_DATA_REG, data);
99 wmb(); /* write it immediately */
100 return 0;
101 }
102 udelay(1);
103 cond_resched();
104 }
105
106 chip->bad_board = TRUE; /* Set TRUE until DSP re-loaded */
107 DE_ACT((KERN_ERR "write_dsp: Set bad_board to TRUE\n"));
108 return -EIO;
109}
110
111
112
113/* read_dsp reads a 32-bit value from the DSP; this is used almost
114exclusively for loading the DSP and checking the status of the ASIC. */
115static int read_dsp(struct echoaudio *chip, u32 *data)
116{
117 u32 status, i;
118
119 for (i = 0; i < READ_DSP_TIMEOUT; i++) {
120 status = get_dsp_register(chip, CHI32_STATUS_REG);
121 if ((status & CHI32_STATUS_HOST_READ_FULL) != 0) {
122 *data = get_dsp_register(chip, CHI32_DATA_REG);
123 return 0;
124 }
125 udelay(1);
126 cond_resched();
127 }
128
129 chip->bad_board = TRUE; /* Set TRUE until DSP re-loaded */
130 DE_INIT((KERN_ERR "read_dsp: Set bad_board to TRUE\n"));
131 return -EIO;
132}
133
134
135
136/****************************************************************************
137 Firmware loading functions
138 ****************************************************************************/
139
140/* This function is used to read back the serial number from the DSP;
141this is triggered by the SET_COMMPAGE_ADDR command.
142Only some early Echogals products have serial numbers in the ROM;
143the serial number is not used, but you still need to do this as
144part of the DSP load process. */
145static int read_sn(struct echoaudio *chip)
146{
147 int i;
148 u32 sn[6];
149
150 for (i = 0; i < 5; i++) {
151 if (read_dsp(chip, &sn[i])) {
152 snd_printk(KERN_ERR "Failed to read serial number\n");
153 return -EIO;
154 }
155 }
156 DE_INIT(("Read serial number %08x %08x %08x %08x %08x\n",
157 sn[0], sn[1], sn[2], sn[3], sn[4]));
158 return 0;
159}
160
161
162
163#ifndef ECHOCARD_HAS_ASIC
164/* This card has no ASIC, just return ok */
165static inline int check_asic_status(struct echoaudio *chip)
166{
167 chip->asic_loaded = TRUE;
168 return 0;
169}
170
171#endif /* !ECHOCARD_HAS_ASIC */
172
173
174
175#ifdef ECHOCARD_HAS_ASIC
176
177/* Load ASIC code - done after the DSP is loaded */
178static int load_asic_generic(struct echoaudio *chip, u32 cmd,
179 const struct firmware *asic)
180{
181 const struct firmware *fw;
182 int err;
183 u32 i, size;
184 u8 *code;
185
186 if ((err = get_firmware(&fw, asic, chip)) < 0) {
187 snd_printk(KERN_WARNING "Firmware not found !\n");
188 return err;
189 }
190
191 code = (u8 *)fw->data;
192 size = fw->size;
193
194 /* Send the "Here comes the ASIC" command */
195 if (write_dsp(chip, cmd) < 0)
196 goto la_error;
197
198 /* Write length of ASIC file in bytes */
199 if (write_dsp(chip, size) < 0)
200 goto la_error;
201
202 for (i = 0; i < size; i++) {
203 if (write_dsp(chip, code[i]) < 0)
204 goto la_error;
205 }
206
207 DE_INIT(("ASIC loaded\n"));
208 free_firmware(fw);
209 return 0;
210
211la_error:
212 DE_INIT(("failed on write_dsp\n"));
213 free_firmware(fw);
214 return -EIO;
215}
216
217#endif /* ECHOCARD_HAS_ASIC */
218
219
220
221#ifdef DSP_56361
222
223/* Install the resident loader for 56361 DSPs; The resident loader is on
224the EPROM on the board for 56301 DSP. The resident loader is a tiny little
225program that is used to load the real DSP code. */
226static int install_resident_loader(struct echoaudio *chip)
227{
228 u32 address;
229 int index, words, i;
230 u16 *code;
231 u32 status;
232 const struct firmware *fw;
233
234 /* 56361 cards only! This check is required by the old 56301-based
235 Mona and Gina24 */
236 if (chip->device_id != DEVICE_ID_56361)
237 return 0;
238
239 /* Look to see if the resident loader is present. If the resident
240 loader is already installed, host flag 5 will be on. */
241 status = get_dsp_register(chip, CHI32_STATUS_REG);
242 if (status & CHI32_STATUS_REG_HF5) {
243 DE_INIT(("Resident loader already installed; status is 0x%x\n",
244 status));
245 return 0;
246 }
247
248 if ((i = get_firmware(&fw, &card_fw[FW_361_LOADER], chip)) < 0) {
249 snd_printk(KERN_WARNING "Firmware not found !\n");
250 return i;
251 }
252
253 /* The DSP code is an array of 16 bit words. The array is divided up
254 into sections. The first word of each section is the size in words,
255 followed by the section type.
256 Since DSP addresses and data are 24 bits wide, they each take up two
257 16 bit words in the array.
258 This is a lot like the other loader loop, but it's not a loop, you
259 don't write the memory type, and you don't write a zero at the end. */
260
261 /* Set DSP format bits for 24 bit mode */
262 set_dsp_register(chip, CHI32_CONTROL_REG,
263 get_dsp_register(chip, CHI32_CONTROL_REG) | 0x900);
264
265 code = (u16 *)fw->data;
266
267 /* Skip the header section; the first word in the array is the size
268 of the first section, so the first real section of code is pointed
269 to by Code[0]. */
270 index = code[0];
271
272 /* Skip the section size, LRS block type, and DSP memory type */
273 index += 3;
274
275 /* Get the number of DSP words to write */
276 words = code[index++];
277
278 /* Get the DSP address for this block; 24 bits, so build from two words */
279 address = ((u32)code[index] << 16) + code[index + 1];
280 index += 2;
281
282 /* Write the count to the DSP */
283 if (write_dsp(chip, words)) {
284 DE_INIT(("install_resident_loader: Failed to write word count!\n"));
285 goto irl_error;
286 }
287 /* Write the DSP address */
288 if (write_dsp(chip, address)) {
289 DE_INIT(("install_resident_loader: Failed to write DSP address!\n"));
290 goto irl_error;
291 }
292 /* Write out this block of code to the DSP */
293 for (i = 0; i < words; i++) {
294 u32 data;
295
296 data = ((u32)code[index] << 16) + code[index + 1];
297 if (write_dsp(chip, data)) {
298 DE_INIT(("install_resident_loader: Failed to write DSP code\n"));
299 goto irl_error;
300 }
301 index += 2;
302 }
303
304 /* Wait for flag 5 to come up */
305 for (i = 0; i < 200; i++) { /* Timeout is 50us * 200 = 10ms */
306 udelay(50);
307 status = get_dsp_register(chip, CHI32_STATUS_REG);
308 if (status & CHI32_STATUS_REG_HF5)
309 break;
310 }
311
312 if (i == 200) {
313 DE_INIT(("Resident loader failed to set HF5\n"));
314 goto irl_error;
315 }
316
317 DE_INIT(("Resident loader successfully installed\n"));
318 free_firmware(fw);
319 return 0;
320
321irl_error:
322 free_firmware(fw);
323 return -EIO;
324}
325
326#endif /* DSP_56361 */
327
328
329static int load_dsp(struct echoaudio *chip, u16 *code)
330{
331 u32 address, data;
332 int index, words, i;
333
334 if (chip->dsp_code == code) {
335 DE_INIT(("DSP is already loaded!\n"));
336 return 0;
337 }
338 chip->bad_board = TRUE; /* Set TRUE until DSP loaded */
339 chip->dsp_code = NULL; /* Current DSP code not loaded */
340 chip->asic_loaded = FALSE; /* Loading the DSP code will reset the ASIC */
341
342 DE_INIT(("load_dsp: Set bad_board to TRUE\n"));
343
344 /* If this board requires a resident loader, install it. */
345#ifdef DSP_56361
346 if ((i = install_resident_loader(chip)) < 0)
347 return i;
348#endif
349
350 /* Send software reset command */
351 if (send_vector(chip, DSP_VC_RESET) < 0) {
352 DE_INIT(("LoadDsp: send_vector DSP_VC_RESET failed, Critical Failure\n"));
353 return -EIO;
354 }
355 /* Delay 10us */
356 udelay(10);
357
358 /* Wait 10ms for HF3 to indicate that software reset is complete */
359 for (i = 0; i < 1000; i++) { /* Timeout is 10us * 1000 = 10ms */
360 if (get_dsp_register(chip, CHI32_STATUS_REG) &
361 CHI32_STATUS_REG_HF3)
362 break;
363 udelay(10);
364 }
365
366 if (i == 1000) {
367 DE_INIT(("load_dsp: Timeout waiting for CHI32_STATUS_REG_HF3\n"));
368 return -EIO;
369 }
370
371 /* Set DSP format bits for 24 bit mode now that soft reset is done */
372 set_dsp_register(chip, CHI32_CONTROL_REG,
373 get_dsp_register(chip, CHI32_CONTROL_REG) | 0x900);
374
375 /* Main loader loop */
376
377 index = code[0];
378 for (;;) {
379 int block_type, mem_type;
380
381 /* Total Block Size */
382 index++;
383
384 /* Block Type */
385 block_type = code[index];
386 if (block_type == 4) /* We're finished */
387 break;
388
389 index++;
390
391 /* Memory Type P=0,X=1,Y=2 */
392 mem_type = code[index++];
393
394 /* Block Code Size */
395 words = code[index++];
396 if (words == 0) /* We're finished */
397 break;
398
399 /* Start Address */
400 address = ((u32)code[index] << 16) + code[index + 1];
401 index += 2;
402
403 if (write_dsp(chip, words) < 0) {
404 DE_INIT(("load_dsp: failed to write number of DSP words\n"));
405 return -EIO;
406 }
407 if (write_dsp(chip, address) < 0) {
408 DE_INIT(("load_dsp: failed to write DSP address\n"));
409 return -EIO;
410 }
411 if (write_dsp(chip, mem_type) < 0) {
412 DE_INIT(("load_dsp: failed to write DSP memory type\n"));
413 return -EIO;
414 }
415 /* Code */
416 for (i = 0; i < words; i++, index+=2) {
417 data = ((u32)code[index] << 16) + code[index + 1];
418 if (write_dsp(chip, data) < 0) {
419 DE_INIT(("load_dsp: failed to write DSP data\n"));
420 return -EIO;
421 }
422 }
423 }
424
425 if (write_dsp(chip, 0) < 0) { /* We're done!!! */
426 DE_INIT(("load_dsp: Failed to write final zero\n"));
427 return -EIO;
428 }
429 udelay(10);
430
431 for (i = 0; i < 5000; i++) { /* Timeout is 100us * 5000 = 500ms */
432 /* Wait for flag 4 - indicates that the DSP loaded OK */
433 if (get_dsp_register(chip, CHI32_STATUS_REG) &
434 CHI32_STATUS_REG_HF4) {
435 set_dsp_register(chip, CHI32_CONTROL_REG,
436 get_dsp_register(chip, CHI32_CONTROL_REG) & ~0x1b00);
437
438 if (write_dsp(chip, DSP_FNC_SET_COMMPAGE_ADDR) < 0) {
439 DE_INIT(("load_dsp: Failed to write DSP_FNC_SET_COMMPAGE_ADDR\n"));
440 return -EIO;
441 }
442
443 if (write_dsp(chip, chip->comm_page_phys) < 0) {
444 DE_INIT(("load_dsp: Failed to write comm page address\n"));
445 return -EIO;
446 }
447
448 /* Get the serial number via slave mode.
449 This is triggered by the SET_COMMPAGE_ADDR command.
450 We don't actually use the serial number but we have to
451 get it as part of the DSP init voodoo. */
452 if (read_sn(chip) < 0) {
453 DE_INIT(("load_dsp: Failed to read serial number\n"));
454 return -EIO;
455 }
456
457 chip->dsp_code = code; /* Show which DSP code loaded */
458 chip->bad_board = FALSE; /* DSP OK */
459 DE_INIT(("load_dsp: OK!\n"));
460 return 0;
461 }
462 udelay(100);
463 }
464
465 DE_INIT(("load_dsp: DSP load timed out waiting for HF4\n"));
466 return -EIO;
467}
468
469
470
471/* load_firmware takes care of loading the DSP and any ASIC code. */
472static int load_firmware(struct echoaudio *chip)
473{
474 const struct firmware *fw;
475 int box_type, err;
476
477 snd_assert(chip->dsp_code_to_load && chip->comm_page, return -EPERM);
478
479 /* See if the ASIC is present and working - only if the DSP is already loaded */
480 if (chip->dsp_code) {
481 if ((box_type = check_asic_status(chip)) >= 0)
482 return box_type;
483 /* ASIC check failed; force the DSP to reload */
484 chip->dsp_code = NULL;
485 }
486
487 if ((err = get_firmware(&fw, chip->dsp_code_to_load, chip)) < 0)
488 return err;
489 err = load_dsp(chip, (u16 *)fw->data);
490 free_firmware(fw);
491 if (err < 0)
492 return err;
493
494 if ((box_type = load_asic(chip)) < 0)
495 return box_type; /* error */
496
497 if ((err = restore_dsp_rettings(chip)) < 0)
498 return err;
499
500 return box_type;
501}
502
503
504
505/****************************************************************************
506 Mixer functions
507 ****************************************************************************/
508
509#if defined(ECHOCARD_HAS_INPUT_NOMINAL_LEVEL) || \
510 defined(ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL)
511
512/* Set the nominal level for an input or output bus (true = -10dBV, false = +4dBu) */
513static int set_nominal_level(struct echoaudio *chip, u16 index, char consumer)
514{
515 snd_assert(index < num_busses_out(chip) + num_busses_in(chip),
516 return -EINVAL);
517
518 /* Wait for the handshake (OK even if ASIC is not loaded) */
519 if (wait_handshake(chip))
520 return -EIO;
521
522 chip->nominal_level[index] = consumer;
523
524 if (consumer)
525 chip->comm_page->nominal_level_mask |= cpu_to_le32(1 << index);
526 else
527 chip->comm_page->nominal_level_mask &= ~cpu_to_le32(1 << index);
528
529 return 0;
530}
531
532#endif /* ECHOCARD_HAS_*_NOMINAL_LEVEL */
533
534
535
536/* Set the gain for a single physical output channel (dB). */
537static int set_output_gain(struct echoaudio *chip, u16 channel, s8 gain)
538{
539 snd_assert(channel < num_busses_out(chip), return -EINVAL);
540
541 if (wait_handshake(chip))
542 return -EIO;
543
544 /* Save the new value */
545 chip->output_gain[channel] = gain;
546 chip->comm_page->line_out_level[channel] = gain;
547 return 0;
548}
549
550
551
552#ifdef ECHOCARD_HAS_MONITOR
553/* Set the monitor level from an input bus to an output bus. */
554static int set_monitor_gain(struct echoaudio *chip, u16 output, u16 input,
555 s8 gain)
556{
557 snd_assert(output < num_busses_out(chip) &&
558 input < num_busses_in(chip), return -EINVAL);
559
560 if (wait_handshake(chip))
561 return -EIO;
562
563 chip->monitor_gain[output][input] = gain;
564 chip->comm_page->monitors[monitor_index(chip, output, input)] = gain;
565 return 0;
566}
567#endif /* ECHOCARD_HAS_MONITOR */
568
569
570/* Tell the DSP to read and update output, nominal & monitor levels in comm page. */
571static int update_output_line_level(struct echoaudio *chip)
572{
573 if (wait_handshake(chip))
574 return -EIO;
575 clear_handshake(chip);
576 return send_vector(chip, DSP_VC_UPDATE_OUTVOL);
577}
578
579
580
581/* Tell the DSP to read and update input levels in comm page */
582static int update_input_line_level(struct echoaudio *chip)
583{
584 if (wait_handshake(chip))
585 return -EIO;
586 clear_handshake(chip);
587 return send_vector(chip, DSP_VC_UPDATE_INGAIN);
588}
589
590
591
592/* set_meters_on turns the meters on or off. If meters are turned on, the DSP
593will write the meter and clock detect values to the comm page at about 30Hz */
594static void set_meters_on(struct echoaudio *chip, char on)
595{
596 if (on && !chip->meters_enabled) {
597 send_vector(chip, DSP_VC_METERS_ON);
598 chip->meters_enabled = 1;
599 } else if (!on && chip->meters_enabled) {
600 send_vector(chip, DSP_VC_METERS_OFF);
601 chip->meters_enabled = 0;
602 memset((s8 *)chip->comm_page->vu_meter, ECHOGAIN_MUTED,
603 DSP_MAXPIPES);
604 memset((s8 *)chip->comm_page->peak_meter, ECHOGAIN_MUTED,
605 DSP_MAXPIPES);
606 }
607}
608
609
610
611/* Fill out an the given array using the current values in the comm page.
612Meters are written in the comm page by the DSP in this order:
613 Output busses
614 Input busses
615 Output pipes (vmixer cards only)
616
617This function assumes there are no more than 16 in/out busses or pipes
618Meters is an array [3][16][2] of long. */
619static void get_audio_meters(struct echoaudio *chip, long *meters)
620{
621 int i, m, n;
622
623 m = 0;
624 n = 0;
625 for (i = 0; i < num_busses_out(chip); i++, m++) {
626 meters[n++] = chip->comm_page->vu_meter[m];
627 meters[n++] = chip->comm_page->peak_meter[m];
628 }
629 for (; n < 32; n++)
630 meters[n] = 0;
631
632#ifdef ECHOCARD_ECHO3G
633 m = E3G_MAX_OUTPUTS; /* Skip unused meters */
634#endif
635
636 for (i = 0; i < num_busses_in(chip); i++, m++) {
637 meters[n++] = chip->comm_page->vu_meter[m];
638 meters[n++] = chip->comm_page->peak_meter[m];
639 }
640 for (; n < 64; n++)
641 meters[n] = 0;
642
643#ifdef ECHOCARD_HAS_VMIXER
644 for (i = 0; i < num_pipes_out(chip); i++, m++) {
645 meters[n++] = chip->comm_page->vu_meter[m];
646 meters[n++] = chip->comm_page->peak_meter[m];
647 }
648#endif
649 for (; n < 96; n++)
650 meters[n] = 0;
651}
652
653
654
655static int restore_dsp_rettings(struct echoaudio *chip)
656{
657 int err;
658 DE_INIT(("restore_dsp_settings\n"));
659
660 if ((err = check_asic_status(chip)) < 0)
661 return err;
662
663 /* @ Gina20/Darla20 only. Should be harmless for other cards. */
664 chip->comm_page->gd_clock_state = GD_CLOCK_UNDEF;
665 chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_UNDEF;
666 chip->comm_page->handshake = 0xffffffff;
667
668 if ((err = set_sample_rate(chip, chip->sample_rate)) < 0)
669 return err;
670
671 if (chip->meters_enabled)
672 if (send_vector(chip, DSP_VC_METERS_ON) < 0)
673 return -EIO;
674
675#ifdef ECHOCARD_HAS_EXTERNAL_CLOCK
676 if (set_input_clock(chip, chip->input_clock) < 0)
677 return -EIO;
678#endif
679
680#ifdef ECHOCARD_HAS_OUTPUT_CLOCK_SWITCH
681 if (set_output_clock(chip, chip->output_clock) < 0)
682 return -EIO;
683#endif
684
685 if (update_output_line_level(chip) < 0)
686 return -EIO;
687
688 if (update_input_line_level(chip) < 0)
689 return -EIO;
690
691#ifdef ECHOCARD_HAS_VMIXER
692 if (update_vmixer_level(chip) < 0)
693 return -EIO;
694#endif
695
696 if (wait_handshake(chip) < 0)
697 return -EIO;
698 clear_handshake(chip);
699
700 DE_INIT(("restore_dsp_rettings done\n"));
701 return send_vector(chip, DSP_VC_UPDATE_FLAGS);
702}
703
704
705
706/****************************************************************************
707 Transport functions
708 ****************************************************************************/
709
710/* set_audio_format() sets the format of the audio data in host memory for
711this pipe. Note that _MS_ (mono-to-stereo) playback modes are not used by ALSA
712but they are here because they are just mono while capturing */
713static void set_audio_format(struct echoaudio *chip, u16 pipe_index,
714 const struct audioformat *format)
715{
716 u16 dsp_format;
717
718 dsp_format = DSP_AUDIOFORM_SS_16LE;
719
720 /* Look for super-interleave (no big-endian and 8 bits) */
721 if (format->interleave > 2) {
722 switch (format->bits_per_sample) {
723 case 16:
724 dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_16LE;
725 break;
726 case 24:
727 dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_24LE;
728 break;
729 case 32:
730 dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_32LE;
731 break;
732 }
733 dsp_format |= format->interleave;
734 } else if (format->data_are_bigendian) {
735 /* For big-endian data, only 32 bit samples are supported */
736 switch (format->interleave) {
737 case 1:
738 dsp_format = DSP_AUDIOFORM_MM_32BE;
739 break;
740#ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32
741 case 2:
742 dsp_format = DSP_AUDIOFORM_SS_32BE;
743 break;
744#endif
745 }
746 } else if (format->interleave == 1 &&
747 format->bits_per_sample == 32 && !format->mono_to_stereo) {
748 /* 32 bit little-endian mono->mono case */
749 dsp_format = DSP_AUDIOFORM_MM_32LE;
750 } else {
751 /* Handle the other little-endian formats */
752 switch (format->bits_per_sample) {
753 case 8:
754 if (format->interleave == 2)
755 dsp_format = DSP_AUDIOFORM_SS_8;
756 else
757 dsp_format = DSP_AUDIOFORM_MS_8;
758 break;
759 default:
760 case 16:
761 if (format->interleave == 2)
762 dsp_format = DSP_AUDIOFORM_SS_16LE;
763 else
764 dsp_format = DSP_AUDIOFORM_MS_16LE;
765 break;
766 case 24:
767 if (format->interleave == 2)
768 dsp_format = DSP_AUDIOFORM_SS_24LE;
769 else
770 dsp_format = DSP_AUDIOFORM_MS_24LE;
771 break;
772 case 32:
773 if (format->interleave == 2)
774 dsp_format = DSP_AUDIOFORM_SS_32LE;
775 else
776 dsp_format = DSP_AUDIOFORM_MS_32LE;
777 break;
778 }
779 }
780 DE_ACT(("set_audio_format[%d] = %x\n", pipe_index, dsp_format));
781 chip->comm_page->audio_format[pipe_index] = cpu_to_le16(dsp_format);
782}
783
784
785
786/* start_transport starts transport for a set of pipes.
787The bits 1 in channel_mask specify what pipes to start. Only the bit of the
788first channel must be set, regardless its interleave.
789Same thing for pause_ and stop_ -trasport below. */
790static int start_transport(struct echoaudio *chip, u32 channel_mask,
791 u32 cyclic_mask)
792{
793 DE_ACT(("start_transport %x\n", channel_mask));
794
795 if (wait_handshake(chip))
796 return -EIO;
797
798 chip->comm_page->cmd_start |= cpu_to_le32(channel_mask);
799
800 if (chip->comm_page->cmd_start) {
801 clear_handshake(chip);
802 send_vector(chip, DSP_VC_START_TRANSFER);
803 if (wait_handshake(chip))
804 return -EIO;
805 /* Keep track of which pipes are transporting */
806 chip->active_mask |= channel_mask;
807 chip->comm_page->cmd_start = 0;
808 return 0;
809 }
810
811 DE_ACT(("start_transport: No pipes to start!\n"));
812 return -EINVAL;
813}
814
815
816
817static int pause_transport(struct echoaudio *chip, u32 channel_mask)
818{
819 DE_ACT(("pause_transport %x\n", channel_mask));
820
821 if (wait_handshake(chip))
822 return -EIO;
823
824 chip->comm_page->cmd_stop |= cpu_to_le32(channel_mask);
825 chip->comm_page->cmd_reset = 0;
826 if (chip->comm_page->cmd_stop) {
827 clear_handshake(chip);
828 send_vector(chip, DSP_VC_STOP_TRANSFER);
829 if (wait_handshake(chip))
830 return -EIO;
831 /* Keep track of which pipes are transporting */
832 chip->active_mask &= ~channel_mask;
833 chip->comm_page->cmd_stop = 0;
834 chip->comm_page->cmd_reset = 0;
835 return 0;
836 }
837
838 DE_ACT(("pause_transport: No pipes to stop!\n"));
839 return 0;
840}
841
842
843
844static int stop_transport(struct echoaudio *chip, u32 channel_mask)
845{
846 DE_ACT(("stop_transport %x\n", channel_mask));
847
848 if (wait_handshake(chip))
849 return -EIO;
850
851 chip->comm_page->cmd_stop |= cpu_to_le32(channel_mask);
852 chip->comm_page->cmd_reset |= cpu_to_le32(channel_mask);
853 if (chip->comm_page->cmd_reset) {
854 clear_handshake(chip);
855 send_vector(chip, DSP_VC_STOP_TRANSFER);
856 if (wait_handshake(chip))
857 return -EIO;
858 /* Keep track of which pipes are transporting */
859 chip->active_mask &= ~channel_mask;
860 chip->comm_page->cmd_stop = 0;
861 chip->comm_page->cmd_reset = 0;
862 return 0;
863 }
864
865 DE_ACT(("stop_transport: No pipes to stop!\n"));
866 return 0;
867}
868
869
870
871static inline int is_pipe_allocated(struct echoaudio *chip, u16 pipe_index)
872{
873 return (chip->pipe_alloc_mask & (1 << pipe_index));
874}
875
876
877
878/* Stops everything and turns off the DSP. All pipes should be already
879stopped and unallocated. */
880static int rest_in_peace(struct echoaudio *chip)
881{
882 DE_ACT(("rest_in_peace() open=%x\n", chip->pipe_alloc_mask));
883
884 /* Stops all active pipes (just to be sure) */
885 stop_transport(chip, chip->active_mask);
886
887 set_meters_on(chip, FALSE);
888
889#ifdef ECHOCARD_HAS_MIDI
890 enable_midi_input(chip, FALSE);
891#endif
892
893 /* Go to sleep */
894 if (chip->dsp_code) {
895 /* Make load_firmware do a complete reload */
896 chip->dsp_code = NULL;
897 /* Put the DSP to sleep */
898 return send_vector(chip, DSP_VC_GO_COMATOSE);
899 }
900 return 0;
901}
902
903
904
905/* Fills the comm page with default values */
906static int init_dsp_comm_page(struct echoaudio *chip)
907{
908 /* Check if the compiler added extra padding inside the structure */
909 if (offsetof(struct comm_page, midi_output) != 0xbe0) {
910 DE_INIT(("init_dsp_comm_page() - Invalid struct comm_page structure\n"));
911 return -EPERM;
912 }
913
914 /* Init all the basic stuff */
915 chip->card_name = ECHOCARD_NAME;
916 chip->bad_board = TRUE; /* Set TRUE until DSP loaded */
917 chip->dsp_code = NULL; /* Current DSP code not loaded */
918 chip->digital_mode = DIGITAL_MODE_NONE;
919 chip->input_clock = ECHO_CLOCK_INTERNAL;
920 chip->output_clock = ECHO_CLOCK_WORD;
921 chip->asic_loaded = FALSE;
922 memset(chip->comm_page, 0, sizeof(struct comm_page));
923
924 /* Init the comm page */
925 chip->comm_page->comm_size =
926 __constant_cpu_to_le32(sizeof(struct comm_page));
927 chip->comm_page->handshake = 0xffffffff;
928 chip->comm_page->midi_out_free_count =
929 __constant_cpu_to_le32(DSP_MIDI_OUT_FIFO_SIZE);
930 chip->comm_page->sample_rate = __constant_cpu_to_le32(44100);
931 chip->sample_rate = 44100;
932
933 /* Set line levels so we don't blast any inputs on startup */
934 memset(chip->comm_page->monitors, ECHOGAIN_MUTED, MONITOR_ARRAY_SIZE);
935 memset(chip->comm_page->vmixer, ECHOGAIN_MUTED, VMIXER_ARRAY_SIZE);
936
937 return 0;
938}
939
940
941
942/* This function initializes the several volume controls for busses and pipes.
943This MUST be called after the DSP is up and running ! */
944static int init_line_levels(struct echoaudio *chip)
945{
946 int st, i, o;
947
948 DE_INIT(("init_line_levels\n"));
949
950 /* Mute output busses */
951 for (i = 0; i < num_busses_out(chip); i++)
952 if ((st = set_output_gain(chip, i, ECHOGAIN_MUTED)))
953 return st;
954 if ((st = update_output_line_level(chip)))
955 return st;
956
957#ifdef ECHOCARD_HAS_VMIXER
958 /* Mute the Vmixer */
959 for (i = 0; i < num_pipes_out(chip); i++)
960 for (o = 0; o < num_busses_out(chip); o++)
961 if ((st = set_vmixer_gain(chip, o, i, ECHOGAIN_MUTED)))
962 return st;
963 if ((st = update_vmixer_level(chip)))
964 return st;
965#endif /* ECHOCARD_HAS_VMIXER */
966
967#ifdef ECHOCARD_HAS_MONITOR
968 /* Mute the monitor mixer */
969 for (o = 0; o < num_busses_out(chip); o++)
970 for (i = 0; i < num_busses_in(chip); i++)
971 if ((st = set_monitor_gain(chip, o, i, ECHOGAIN_MUTED)))
972 return st;
973 if ((st = update_output_line_level(chip)))
974 return st;
975#endif /* ECHOCARD_HAS_MONITOR */
976
977#ifdef ECHOCARD_HAS_INPUT_GAIN
978 for (i = 0; i < num_busses_in(chip); i++)
979 if ((st = set_input_gain(chip, i, ECHOGAIN_MUTED)))
980 return st;
981 if ((st = update_input_line_level(chip)))
982 return st;
983#endif /* ECHOCARD_HAS_INPUT_GAIN */
984
985 return 0;
986}
987
988
989
990/* This is low level part of the interrupt handler.
991It returns -1 if the IRQ is not ours, or N>=0 if it is, where N is the number
992of midi data in the input queue. */
993static int service_irq(struct echoaudio *chip)
994{
995 int st;
996
997 /* Read the DSP status register and see if this DSP generated this interrupt */
998 if (get_dsp_register(chip, CHI32_STATUS_REG) & CHI32_STATUS_IRQ) {
999 st = 0;
1000#ifdef ECHOCARD_HAS_MIDI
1001 /* Get and parse midi data if present */
1002 if (chip->comm_page->midi_input[0]) /* The count is at index 0 */
1003 st = midi_service_irq(chip); /* Returns how many midi bytes we received */
1004#endif
1005 /* Clear the hardware interrupt */
1006 chip->comm_page->midi_input[0] = 0;
1007 send_vector(chip, DSP_VC_ACK_INT);
1008 return st;
1009 }
1010 return -1;
1011}
1012
1013
1014
1015
1016/******************************************************************************
1017 Functions for opening and closing pipes
1018 ******************************************************************************/
1019
1020/* allocate_pipes is used to reserve audio pipes for your exclusive use.
1021The call will fail if some pipes are already allocated. */
1022static int allocate_pipes(struct echoaudio *chip, struct audiopipe *pipe,
1023 int pipe_index, int interleave)
1024{
1025 int i;
1026 u32 channel_mask;
1027 char is_cyclic;
1028
1029 DE_ACT(("allocate_pipes: ch=%d int=%d\n", pipe_index, interleave));
1030
1031 if (chip->bad_board)
1032 return -EIO;
1033
1034 is_cyclic = 1; /* This driver uses cyclic buffers only */
1035
1036 for (channel_mask = i = 0; i < interleave; i++)
1037 channel_mask |= 1 << (pipe_index + i);
1038 if (chip->pipe_alloc_mask & channel_mask) {
1039 DE_ACT(("allocate_pipes: channel already open\n"));
1040 return -EAGAIN;
1041 }
1042
1043 chip->comm_page->position[pipe_index] = 0;
1044 chip->pipe_alloc_mask |= channel_mask;
1045 if (is_cyclic)
1046 chip->pipe_cyclic_mask |= channel_mask;
1047 pipe->index = pipe_index;
1048 pipe->interleave = interleave;
1049 pipe->state = PIPE_STATE_STOPPED;
1050
1051 /* The counter register is where the DSP writes the 32 bit DMA
1052 position for a pipe. The DSP is constantly updating this value as
1053 it moves data. The DMA counter is in units of bytes, not samples. */
1054 pipe->dma_counter = &chip->comm_page->position[pipe_index];
1055 *pipe->dma_counter = 0;
1056 DE_ACT(("allocate_pipes: ok\n"));
1057 return pipe_index;
1058}
1059
1060
1061
1062static int free_pipes(struct echoaudio *chip, struct audiopipe *pipe)
1063{
1064 u32 channel_mask;
1065 int i;
1066
1067 DE_ACT(("free_pipes: Pipe %d\n", pipe->index));
1068 snd_assert(is_pipe_allocated(chip, pipe->index), return -EINVAL);
1069 snd_assert(pipe->state == PIPE_STATE_STOPPED, return -EINVAL);
1070
1071 for (channel_mask = i = 0; i < pipe->interleave; i++)
1072 channel_mask |= 1 << (pipe->index + i);
1073
1074 chip->pipe_alloc_mask &= ~channel_mask;
1075 chip->pipe_cyclic_mask &= ~channel_mask;
1076 return 0;
1077}
1078
1079
1080
1081/******************************************************************************
1082 Functions for managing the scatter-gather list
1083******************************************************************************/
1084
1085static int sglist_init(struct echoaudio *chip, struct audiopipe *pipe)
1086{
1087 pipe->sglist_head = 0;
1088 memset(pipe->sgpage.area, 0, PAGE_SIZE);
1089 chip->comm_page->sglist_addr[pipe->index].addr =
1090 cpu_to_le32(pipe->sgpage.addr);
1091 return 0;
1092}
1093
1094
1095
1096static int sglist_add_mapping(struct echoaudio *chip, struct audiopipe *pipe,
1097 dma_addr_t address, size_t length)
1098{
1099 int head = pipe->sglist_head;
1100 struct sg_entry *list = (struct sg_entry *)pipe->sgpage.area;
1101
1102 if (head < MAX_SGLIST_ENTRIES - 1) {
1103 list[head].addr = cpu_to_le32(address);
1104 list[head].size = cpu_to_le32(length);
1105 pipe->sglist_head++;
1106 } else {
1107 DE_ACT(("SGlist: too many fragments\n"));
1108 return -ENOMEM;
1109 }
1110 return 0;
1111}
1112
1113
1114
1115static inline int sglist_add_irq(struct echoaudio *chip, struct audiopipe *pipe)
1116{
1117 return sglist_add_mapping(chip, pipe, 0, 0);
1118}
1119
1120
1121
1122static inline int sglist_wrap(struct echoaudio *chip, struct audiopipe *pipe)
1123{
1124 return sglist_add_mapping(chip, pipe, pipe->sgpage.addr, 0);
1125}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-17 12:31:57 -0500