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dd7b254d GP |
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 | ||
35 | static int restore_dsp_rettings(struct echoaudio *chip); | |
36 | ||
37 | ||
38 | /* Some vector commands involve the DSP reading or writing data to and from the | |
39 | comm page; if you send one of these commands to the DSP, it will complete the | |
40 | command and then write a non-zero value to the Handshake field in the | |
41 | comm page. This function waits for the handshake to show up. */ | |
42 | static int wait_handshake(struct echoaudio *chip) | |
43 | { | |
44 | int i; | |
45 | ||
22d3a200 | 46 | /* Wait up to 20ms for the handshake from the DSP */ |
dd7b254d GP |
47 | for (i = 0; i < HANDSHAKE_TIMEOUT; i++) { |
48 | /* Look for the handshake value */ | |
22d3a200 | 49 | barrier(); |
dd7b254d | 50 | if (chip->comm_page->handshake) { |
dd7b254d GP |
51 | return 0; |
52 | } | |
53 | udelay(1); | |
54 | } | |
55 | ||
ece7a36d | 56 | dev_err(chip->card->dev, "wait_handshake(): Timeout waiting for DSP\n"); |
dd7b254d GP |
57 | return -EBUSY; |
58 | } | |
59 | ||
60 | ||
61 | ||
62 | /* Much of the interaction between the DSP and the driver is done via vector | |
63 | commands; send_vector writes a vector command to the DSP. Typically, this | |
64 | causes the DSP to read or write fields in the comm page. | |
65 | PCI posting is not required thanks to the handshake logic. */ | |
66 | static 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 | ||
b5b4a41b | 83 | dev_err(chip->card->dev, "timeout on send_vector\n"); |
dd7b254d GP |
84 | return -EBUSY; |
85 | } | |
86 | ||
87 | ||
88 | ||
89 | /* write_dsp writes a 32-bit value to the DSP; this is used almost | |
90 | exclusively for loading the DSP. */ | |
91 | static 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 */ | |
b5b4a41b | 107 | dev_dbg(chip->card->dev, "write_dsp: Set bad_board to TRUE\n"); |
dd7b254d GP |
108 | return -EIO; |
109 | } | |
110 | ||
111 | ||
112 | ||
113 | /* read_dsp reads a 32-bit value from the DSP; this is used almost | |
114 | exclusively for loading the DSP and checking the status of the ASIC. */ | |
115 | static 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 */ | |
b5b4a41b | 130 | dev_err(chip->card->dev, "read_dsp: Set bad_board to TRUE\n"); |
dd7b254d GP |
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; | |
141 | this is triggered by the SET_COMMPAGE_ADDR command. | |
142 | Only some early Echogals products have serial numbers in the ROM; | |
143 | the serial number is not used, but you still need to do this as | |
144 | part of the DSP load process. */ | |
145 | static 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])) { | |
ece7a36d TI |
152 | dev_err(chip->card->dev, |
153 | "Failed to read serial number\n"); | |
dd7b254d GP |
154 | return -EIO; |
155 | } | |
156 | } | |
b5b4a41b SM |
157 | dev_dbg(chip->card->dev, |
158 | "Read serial number %08x %08x %08x %08x %08x\n", | |
159 | sn[0], sn[1], sn[2], sn[3], sn[4]); | |
dd7b254d GP |
160 | return 0; |
161 | } | |
162 | ||
163 | ||
164 | ||
165 | #ifndef ECHOCARD_HAS_ASIC | |
166 | /* This card has no ASIC, just return ok */ | |
167 | static inline int check_asic_status(struct echoaudio *chip) | |
168 | { | |
169 | chip->asic_loaded = TRUE; | |
170 | return 0; | |
171 | } | |
172 | ||
173 | #endif /* !ECHOCARD_HAS_ASIC */ | |
174 | ||
175 | ||
176 | ||
177 | #ifdef ECHOCARD_HAS_ASIC | |
178 | ||
179 | /* Load ASIC code - done after the DSP is loaded */ | |
19b50063 | 180 | static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic) |
dd7b254d GP |
181 | { |
182 | const struct firmware *fw; | |
183 | int err; | |
184 | u32 i, size; | |
185 | u8 *code; | |
186 | ||
19b50063 GP |
187 | err = get_firmware(&fw, chip, asic); |
188 | if (err < 0) { | |
ece7a36d | 189 | dev_warn(chip->card->dev, "Firmware not found !\n"); |
dd7b254d GP |
190 | return err; |
191 | } | |
192 | ||
193 | code = (u8 *)fw->data; | |
194 | size = fw->size; | |
195 | ||
196 | /* Send the "Here comes the ASIC" command */ | |
197 | if (write_dsp(chip, cmd) < 0) | |
198 | goto la_error; | |
199 | ||
200 | /* Write length of ASIC file in bytes */ | |
201 | if (write_dsp(chip, size) < 0) | |
202 | goto la_error; | |
203 | ||
204 | for (i = 0; i < size; i++) { | |
205 | if (write_dsp(chip, code[i]) < 0) | |
206 | goto la_error; | |
207 | } | |
208 | ||
b5b4a41b | 209 | dev_dbg(chip->card->dev, "ASIC loaded\n"); |
e3690869 | 210 | free_firmware(fw, chip); |
dd7b254d GP |
211 | return 0; |
212 | ||
213 | la_error: | |
b5b4a41b | 214 | dev_err(chip->card->dev, "failed on write_dsp\n"); |
e3690869 | 215 | free_firmware(fw, chip); |
dd7b254d GP |
216 | return -EIO; |
217 | } | |
218 | ||
219 | #endif /* ECHOCARD_HAS_ASIC */ | |
220 | ||
221 | ||
222 | ||
223 | #ifdef DSP_56361 | |
224 | ||
225 | /* Install the resident loader for 56361 DSPs; The resident loader is on | |
226 | the EPROM on the board for 56301 DSP. The resident loader is a tiny little | |
227 | program that is used to load the real DSP code. */ | |
228 | static int install_resident_loader(struct echoaudio *chip) | |
229 | { | |
230 | u32 address; | |
231 | int index, words, i; | |
232 | u16 *code; | |
233 | u32 status; | |
234 | const struct firmware *fw; | |
235 | ||
236 | /* 56361 cards only! This check is required by the old 56301-based | |
237 | Mona and Gina24 */ | |
238 | if (chip->device_id != DEVICE_ID_56361) | |
239 | return 0; | |
240 | ||
241 | /* Look to see if the resident loader is present. If the resident | |
242 | loader is already installed, host flag 5 will be on. */ | |
243 | status = get_dsp_register(chip, CHI32_STATUS_REG); | |
244 | if (status & CHI32_STATUS_REG_HF5) { | |
b5b4a41b SM |
245 | dev_dbg(chip->card->dev, |
246 | "Resident loader already installed; status is 0x%x\n", | |
247 | status); | |
dd7b254d GP |
248 | return 0; |
249 | } | |
250 | ||
19b50063 GP |
251 | i = get_firmware(&fw, chip, FW_361_LOADER); |
252 | if (i < 0) { | |
ece7a36d | 253 | dev_warn(chip->card->dev, "Firmware not found !\n"); |
dd7b254d GP |
254 | return i; |
255 | } | |
256 | ||
257 | /* The DSP code is an array of 16 bit words. The array is divided up | |
258 | into sections. The first word of each section is the size in words, | |
259 | followed by the section type. | |
260 | Since DSP addresses and data are 24 bits wide, they each take up two | |
261 | 16 bit words in the array. | |
262 | This is a lot like the other loader loop, but it's not a loop, you | |
263 | don't write the memory type, and you don't write a zero at the end. */ | |
264 | ||
265 | /* Set DSP format bits for 24 bit mode */ | |
266 | set_dsp_register(chip, CHI32_CONTROL_REG, | |
267 | get_dsp_register(chip, CHI32_CONTROL_REG) | 0x900); | |
268 | ||
269 | code = (u16 *)fw->data; | |
270 | ||
271 | /* Skip the header section; the first word in the array is the size | |
272 | of the first section, so the first real section of code is pointed | |
273 | to by Code[0]. */ | |
274 | index = code[0]; | |
275 | ||
276 | /* Skip the section size, LRS block type, and DSP memory type */ | |
277 | index += 3; | |
278 | ||
279 | /* Get the number of DSP words to write */ | |
280 | words = code[index++]; | |
281 | ||
282 | /* Get the DSP address for this block; 24 bits, so build from two words */ | |
283 | address = ((u32)code[index] << 16) + code[index + 1]; | |
284 | index += 2; | |
285 | ||
286 | /* Write the count to the DSP */ | |
287 | if (write_dsp(chip, words)) { | |
b5b4a41b SM |
288 | dev_err(chip->card->dev, |
289 | "install_resident_loader: Failed to write word count!\n"); | |
dd7b254d GP |
290 | goto irl_error; |
291 | } | |
292 | /* Write the DSP address */ | |
293 | if (write_dsp(chip, address)) { | |
b5b4a41b SM |
294 | dev_err(chip->card->dev, |
295 | "install_resident_loader: Failed to write DSP address!\n"); | |
dd7b254d GP |
296 | goto irl_error; |
297 | } | |
298 | /* Write out this block of code to the DSP */ | |
299 | for (i = 0; i < words; i++) { | |
300 | u32 data; | |
301 | ||
302 | data = ((u32)code[index] << 16) + code[index + 1]; | |
303 | if (write_dsp(chip, data)) { | |
b5b4a41b SM |
304 | dev_err(chip->card->dev, |
305 | "install_resident_loader: Failed to write DSP code\n"); | |
dd7b254d GP |
306 | goto irl_error; |
307 | } | |
308 | index += 2; | |
309 | } | |
310 | ||
311 | /* Wait for flag 5 to come up */ | |
312 | for (i = 0; i < 200; i++) { /* Timeout is 50us * 200 = 10ms */ | |
313 | udelay(50); | |
314 | status = get_dsp_register(chip, CHI32_STATUS_REG); | |
315 | if (status & CHI32_STATUS_REG_HF5) | |
316 | break; | |
317 | } | |
318 | ||
319 | if (i == 200) { | |
b5b4a41b | 320 | dev_err(chip->card->dev, "Resident loader failed to set HF5\n"); |
dd7b254d GP |
321 | goto irl_error; |
322 | } | |
323 | ||
b5b4a41b | 324 | dev_dbg(chip->card->dev, "Resident loader successfully installed\n"); |
e3690869 | 325 | free_firmware(fw, chip); |
dd7b254d GP |
326 | return 0; |
327 | ||
328 | irl_error: | |
e3690869 | 329 | free_firmware(fw, chip); |
dd7b254d GP |
330 | return -EIO; |
331 | } | |
332 | ||
333 | #endif /* DSP_56361 */ | |
334 | ||
335 | ||
336 | static int load_dsp(struct echoaudio *chip, u16 *code) | |
337 | { | |
338 | u32 address, data; | |
339 | int index, words, i; | |
340 | ||
341 | if (chip->dsp_code == code) { | |
b5b4a41b | 342 | dev_warn(chip->card->dev, "DSP is already loaded!\n"); |
dd7b254d GP |
343 | return 0; |
344 | } | |
345 | chip->bad_board = TRUE; /* Set TRUE until DSP loaded */ | |
346 | chip->dsp_code = NULL; /* Current DSP code not loaded */ | |
347 | chip->asic_loaded = FALSE; /* Loading the DSP code will reset the ASIC */ | |
348 | ||
b5b4a41b | 349 | dev_dbg(chip->card->dev, "load_dsp: Set bad_board to TRUE\n"); |
dd7b254d GP |
350 | |
351 | /* If this board requires a resident loader, install it. */ | |
352 | #ifdef DSP_56361 | |
353 | if ((i = install_resident_loader(chip)) < 0) | |
354 | return i; | |
355 | #endif | |
356 | ||
357 | /* Send software reset command */ | |
358 | if (send_vector(chip, DSP_VC_RESET) < 0) { | |
b5b4a41b SM |
359 | dev_err(chip->card->dev, |
360 | "LoadDsp: send_vector DSP_VC_RESET failed, Critical Failure\n"); | |
dd7b254d GP |
361 | return -EIO; |
362 | } | |
363 | /* Delay 10us */ | |
364 | udelay(10); | |
365 | ||
366 | /* Wait 10ms for HF3 to indicate that software reset is complete */ | |
367 | for (i = 0; i < 1000; i++) { /* Timeout is 10us * 1000 = 10ms */ | |
368 | if (get_dsp_register(chip, CHI32_STATUS_REG) & | |
369 | CHI32_STATUS_REG_HF3) | |
370 | break; | |
371 | udelay(10); | |
372 | } | |
373 | ||
374 | if (i == 1000) { | |
b5b4a41b SM |
375 | dev_err(chip->card->dev, |
376 | "load_dsp: Timeout waiting for CHI32_STATUS_REG_HF3\n"); | |
dd7b254d GP |
377 | return -EIO; |
378 | } | |
379 | ||
380 | /* Set DSP format bits for 24 bit mode now that soft reset is done */ | |
381 | set_dsp_register(chip, CHI32_CONTROL_REG, | |
382 | get_dsp_register(chip, CHI32_CONTROL_REG) | 0x900); | |
383 | ||
384 | /* Main loader loop */ | |
385 | ||
386 | index = code[0]; | |
387 | for (;;) { | |
388 | int block_type, mem_type; | |
389 | ||
390 | /* Total Block Size */ | |
391 | index++; | |
392 | ||
393 | /* Block Type */ | |
394 | block_type = code[index]; | |
395 | if (block_type == 4) /* We're finished */ | |
396 | break; | |
397 | ||
398 | index++; | |
399 | ||
400 | /* Memory Type P=0,X=1,Y=2 */ | |
401 | mem_type = code[index++]; | |
402 | ||
403 | /* Block Code Size */ | |
404 | words = code[index++]; | |
405 | if (words == 0) /* We're finished */ | |
406 | break; | |
407 | ||
408 | /* Start Address */ | |
409 | address = ((u32)code[index] << 16) + code[index + 1]; | |
410 | index += 2; | |
411 | ||
412 | if (write_dsp(chip, words) < 0) { | |
b5b4a41b SM |
413 | dev_err(chip->card->dev, |
414 | "load_dsp: failed to write number of DSP words\n"); | |
dd7b254d GP |
415 | return -EIO; |
416 | } | |
417 | if (write_dsp(chip, address) < 0) { | |
b5b4a41b SM |
418 | dev_err(chip->card->dev, |
419 | "load_dsp: failed to write DSP address\n"); | |
dd7b254d GP |
420 | return -EIO; |
421 | } | |
422 | if (write_dsp(chip, mem_type) < 0) { | |
b5b4a41b SM |
423 | dev_err(chip->card->dev, |
424 | "load_dsp: failed to write DSP memory type\n"); | |
dd7b254d GP |
425 | return -EIO; |
426 | } | |
427 | /* Code */ | |
428 | for (i = 0; i < words; i++, index+=2) { | |
429 | data = ((u32)code[index] << 16) + code[index + 1]; | |
430 | if (write_dsp(chip, data) < 0) { | |
b5b4a41b SM |
431 | dev_err(chip->card->dev, |
432 | "load_dsp: failed to write DSP data\n"); | |
dd7b254d GP |
433 | return -EIO; |
434 | } | |
435 | } | |
436 | } | |
437 | ||
438 | if (write_dsp(chip, 0) < 0) { /* We're done!!! */ | |
b5b4a41b SM |
439 | dev_err(chip->card->dev, |
440 | "load_dsp: Failed to write final zero\n"); | |
dd7b254d GP |
441 | return -EIO; |
442 | } | |
443 | udelay(10); | |
444 | ||
445 | for (i = 0; i < 5000; i++) { /* Timeout is 100us * 5000 = 500ms */ | |
446 | /* Wait for flag 4 - indicates that the DSP loaded OK */ | |
447 | if (get_dsp_register(chip, CHI32_STATUS_REG) & | |
448 | CHI32_STATUS_REG_HF4) { | |
449 | set_dsp_register(chip, CHI32_CONTROL_REG, | |
450 | get_dsp_register(chip, CHI32_CONTROL_REG) & ~0x1b00); | |
451 | ||
452 | if (write_dsp(chip, DSP_FNC_SET_COMMPAGE_ADDR) < 0) { | |
b5b4a41b SM |
453 | dev_err(chip->card->dev, |
454 | "load_dsp: Failed to write DSP_FNC_SET_COMMPAGE_ADDR\n"); | |
dd7b254d GP |
455 | return -EIO; |
456 | } | |
457 | ||
458 | if (write_dsp(chip, chip->comm_page_phys) < 0) { | |
b5b4a41b SM |
459 | dev_err(chip->card->dev, |
460 | "load_dsp: Failed to write comm page address\n"); | |
dd7b254d GP |
461 | return -EIO; |
462 | } | |
463 | ||
464 | /* Get the serial number via slave mode. | |
465 | This is triggered by the SET_COMMPAGE_ADDR command. | |
466 | We don't actually use the serial number but we have to | |
467 | get it as part of the DSP init voodoo. */ | |
468 | if (read_sn(chip) < 0) { | |
b5b4a41b SM |
469 | dev_err(chip->card->dev, |
470 | "load_dsp: Failed to read serial number\n"); | |
dd7b254d GP |
471 | return -EIO; |
472 | } | |
473 | ||
474 | chip->dsp_code = code; /* Show which DSP code loaded */ | |
475 | chip->bad_board = FALSE; /* DSP OK */ | |
b5b4a41b | 476 | dev_dbg(chip->card->dev, "load_dsp: OK!\n"); |
dd7b254d GP |
477 | return 0; |
478 | } | |
479 | udelay(100); | |
480 | } | |
481 | ||
b5b4a41b SM |
482 | dev_err(chip->card->dev, |
483 | "load_dsp: DSP load timed out waiting for HF4\n"); | |
dd7b254d GP |
484 | return -EIO; |
485 | } | |
486 | ||
487 | ||
488 | ||
489 | /* load_firmware takes care of loading the DSP and any ASIC code. */ | |
490 | static int load_firmware(struct echoaudio *chip) | |
491 | { | |
492 | const struct firmware *fw; | |
493 | int box_type, err; | |
494 | ||
c914f55f | 495 | if (snd_BUG_ON(!chip->comm_page)) |
da3cec35 | 496 | return -EPERM; |
dd7b254d GP |
497 | |
498 | /* See if the ASIC is present and working - only if the DSP is already loaded */ | |
499 | if (chip->dsp_code) { | |
500 | if ((box_type = check_asic_status(chip)) >= 0) | |
501 | return box_type; | |
502 | /* ASIC check failed; force the DSP to reload */ | |
503 | chip->dsp_code = NULL; | |
504 | } | |
505 | ||
19b50063 GP |
506 | err = get_firmware(&fw, chip, chip->dsp_code_to_load); |
507 | if (err < 0) | |
dd7b254d GP |
508 | return err; |
509 | err = load_dsp(chip, (u16 *)fw->data); | |
e3690869 | 510 | free_firmware(fw, chip); |
dd7b254d GP |
511 | if (err < 0) |
512 | return err; | |
513 | ||
514 | if ((box_type = load_asic(chip)) < 0) | |
515 | return box_type; /* error */ | |
516 | ||
dd7b254d GP |
517 | return box_type; |
518 | } | |
519 | ||
520 | ||
521 | ||
522 | /**************************************************************************** | |
523 | Mixer functions | |
524 | ****************************************************************************/ | |
525 | ||
526 | #if defined(ECHOCARD_HAS_INPUT_NOMINAL_LEVEL) || \ | |
527 | defined(ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL) | |
528 | ||
529 | /* Set the nominal level for an input or output bus (true = -10dBV, false = +4dBu) */ | |
530 | static int set_nominal_level(struct echoaudio *chip, u16 index, char consumer) | |
531 | { | |
da3cec35 TI |
532 | if (snd_BUG_ON(index >= num_busses_out(chip) + num_busses_in(chip))) |
533 | return -EINVAL; | |
dd7b254d GP |
534 | |
535 | /* Wait for the handshake (OK even if ASIC is not loaded) */ | |
536 | if (wait_handshake(chip)) | |
537 | return -EIO; | |
538 | ||
539 | chip->nominal_level[index] = consumer; | |
540 | ||
541 | if (consumer) | |
542 | chip->comm_page->nominal_level_mask |= cpu_to_le32(1 << index); | |
543 | else | |
544 | chip->comm_page->nominal_level_mask &= ~cpu_to_le32(1 << index); | |
545 | ||
546 | return 0; | |
547 | } | |
548 | ||
549 | #endif /* ECHOCARD_HAS_*_NOMINAL_LEVEL */ | |
550 | ||
551 | ||
552 | ||
553 | /* Set the gain for a single physical output channel (dB). */ | |
554 | static int set_output_gain(struct echoaudio *chip, u16 channel, s8 gain) | |
555 | { | |
da3cec35 TI |
556 | if (snd_BUG_ON(channel >= num_busses_out(chip))) |
557 | return -EINVAL; | |
dd7b254d GP |
558 | |
559 | if (wait_handshake(chip)) | |
560 | return -EIO; | |
561 | ||
562 | /* Save the new value */ | |
563 | chip->output_gain[channel] = gain; | |
564 | chip->comm_page->line_out_level[channel] = gain; | |
565 | return 0; | |
566 | } | |
567 | ||
568 | ||
569 | ||
570 | #ifdef ECHOCARD_HAS_MONITOR | |
571 | /* Set the monitor level from an input bus to an output bus. */ | |
572 | static int set_monitor_gain(struct echoaudio *chip, u16 output, u16 input, | |
573 | s8 gain) | |
574 | { | |
da3cec35 TI |
575 | if (snd_BUG_ON(output >= num_busses_out(chip) || |
576 | input >= num_busses_in(chip))) | |
577 | return -EINVAL; | |
dd7b254d GP |
578 | |
579 | if (wait_handshake(chip)) | |
580 | return -EIO; | |
581 | ||
582 | chip->monitor_gain[output][input] = gain; | |
583 | chip->comm_page->monitors[monitor_index(chip, output, input)] = gain; | |
584 | return 0; | |
585 | } | |
586 | #endif /* ECHOCARD_HAS_MONITOR */ | |
587 | ||
588 | ||
589 | /* Tell the DSP to read and update output, nominal & monitor levels in comm page. */ | |
590 | static int update_output_line_level(struct echoaudio *chip) | |
591 | { | |
592 | if (wait_handshake(chip)) | |
593 | return -EIO; | |
594 | clear_handshake(chip); | |
595 | return send_vector(chip, DSP_VC_UPDATE_OUTVOL); | |
596 | } | |
597 | ||
598 | ||
599 | ||
600 | /* Tell the DSP to read and update input levels in comm page */ | |
601 | static int update_input_line_level(struct echoaudio *chip) | |
602 | { | |
603 | if (wait_handshake(chip)) | |
604 | return -EIO; | |
605 | clear_handshake(chip); | |
606 | return send_vector(chip, DSP_VC_UPDATE_INGAIN); | |
607 | } | |
608 | ||
609 | ||
610 | ||
611 | /* set_meters_on turns the meters on or off. If meters are turned on, the DSP | |
612 | will write the meter and clock detect values to the comm page at about 30Hz */ | |
613 | static void set_meters_on(struct echoaudio *chip, char on) | |
614 | { | |
615 | if (on && !chip->meters_enabled) { | |
616 | send_vector(chip, DSP_VC_METERS_ON); | |
617 | chip->meters_enabled = 1; | |
618 | } else if (!on && chip->meters_enabled) { | |
619 | send_vector(chip, DSP_VC_METERS_OFF); | |
620 | chip->meters_enabled = 0; | |
621 | memset((s8 *)chip->comm_page->vu_meter, ECHOGAIN_MUTED, | |
622 | DSP_MAXPIPES); | |
623 | memset((s8 *)chip->comm_page->peak_meter, ECHOGAIN_MUTED, | |
624 | DSP_MAXPIPES); | |
625 | } | |
626 | } | |
627 | ||
628 | ||
629 | ||
630 | /* Fill out an the given array using the current values in the comm page. | |
631 | Meters are written in the comm page by the DSP in this order: | |
632 | Output busses | |
633 | Input busses | |
634 | Output pipes (vmixer cards only) | |
635 | ||
636 | This function assumes there are no more than 16 in/out busses or pipes | |
637 | Meters is an array [3][16][2] of long. */ | |
638 | static void get_audio_meters(struct echoaudio *chip, long *meters) | |
639 | { | |
640 | int i, m, n; | |
641 | ||
642 | m = 0; | |
643 | n = 0; | |
644 | for (i = 0; i < num_busses_out(chip); i++, m++) { | |
645 | meters[n++] = chip->comm_page->vu_meter[m]; | |
646 | meters[n++] = chip->comm_page->peak_meter[m]; | |
647 | } | |
648 | for (; n < 32; n++) | |
649 | meters[n] = 0; | |
650 | ||
651 | #ifdef ECHOCARD_ECHO3G | |
652 | m = E3G_MAX_OUTPUTS; /* Skip unused meters */ | |
653 | #endif | |
654 | ||
655 | for (i = 0; i < num_busses_in(chip); i++, m++) { | |
656 | meters[n++] = chip->comm_page->vu_meter[m]; | |
657 | meters[n++] = chip->comm_page->peak_meter[m]; | |
658 | } | |
659 | for (; n < 64; n++) | |
660 | meters[n] = 0; | |
661 | ||
662 | #ifdef ECHOCARD_HAS_VMIXER | |
663 | for (i = 0; i < num_pipes_out(chip); i++, m++) { | |
664 | meters[n++] = chip->comm_page->vu_meter[m]; | |
665 | meters[n++] = chip->comm_page->peak_meter[m]; | |
666 | } | |
667 | #endif | |
668 | for (; n < 96; n++) | |
669 | meters[n] = 0; | |
670 | } | |
671 | ||
672 | ||
673 | ||
674 | static int restore_dsp_rettings(struct echoaudio *chip) | |
675 | { | |
47b5d028 | 676 | int i, o, err; |
b5b4a41b | 677 | dev_dbg(chip->card->dev, "restore_dsp_settings\n"); |
dd7b254d GP |
678 | |
679 | if ((err = check_asic_status(chip)) < 0) | |
680 | return err; | |
681 | ||
47b5d028 | 682 | /* Gina20/Darla20 only. Should be harmless for other cards. */ |
dd7b254d GP |
683 | chip->comm_page->gd_clock_state = GD_CLOCK_UNDEF; |
684 | chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_UNDEF; | |
685 | chip->comm_page->handshake = 0xffffffff; | |
686 | ||
47b5d028 GP |
687 | /* Restore output busses */ |
688 | for (i = 0; i < num_busses_out(chip); i++) { | |
689 | err = set_output_gain(chip, i, chip->output_gain[i]); | |
690 | if (err < 0) | |
691 | return err; | |
692 | } | |
693 | ||
694 | #ifdef ECHOCARD_HAS_VMIXER | |
695 | for (i = 0; i < num_pipes_out(chip); i++) | |
696 | for (o = 0; o < num_busses_out(chip); o++) { | |
697 | err = set_vmixer_gain(chip, o, i, | |
698 | chip->vmixer_gain[o][i]); | |
699 | if (err < 0) | |
700 | return err; | |
701 | } | |
702 | if (update_vmixer_level(chip) < 0) | |
703 | return -EIO; | |
704 | #endif /* ECHOCARD_HAS_VMIXER */ | |
705 | ||
706 | #ifdef ECHOCARD_HAS_MONITOR | |
707 | for (o = 0; o < num_busses_out(chip); o++) | |
708 | for (i = 0; i < num_busses_in(chip); i++) { | |
709 | err = set_monitor_gain(chip, o, i, | |
710 | chip->monitor_gain[o][i]); | |
711 | if (err < 0) | |
712 | return err; | |
713 | } | |
714 | #endif /* ECHOCARD_HAS_MONITOR */ | |
715 | ||
716 | #ifdef ECHOCARD_HAS_INPUT_GAIN | |
717 | for (i = 0; i < num_busses_in(chip); i++) { | |
718 | err = set_input_gain(chip, i, chip->input_gain[i]); | |
719 | if (err < 0) | |
720 | return err; | |
721 | } | |
722 | #endif /* ECHOCARD_HAS_INPUT_GAIN */ | |
723 | ||
724 | err = update_output_line_level(chip); | |
725 | if (err < 0) | |
dd7b254d GP |
726 | return err; |
727 | ||
47b5d028 GP |
728 | err = update_input_line_level(chip); |
729 | if (err < 0) | |
730 | return err; | |
dd7b254d | 731 | |
47b5d028 GP |
732 | err = set_sample_rate(chip, chip->sample_rate); |
733 | if (err < 0) | |
734 | return err; | |
735 | ||
736 | if (chip->meters_enabled) { | |
737 | err = send_vector(chip, DSP_VC_METERS_ON); | |
738 | if (err < 0) | |
739 | return err; | |
740 | } | |
741 | ||
742 | #ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH | |
743 | if (set_digital_mode(chip, chip->digital_mode) < 0) | |
dd7b254d GP |
744 | return -EIO; |
745 | #endif | |
746 | ||
47b5d028 GP |
747 | #ifdef ECHOCARD_HAS_DIGITAL_IO |
748 | if (set_professional_spdif(chip, chip->professional_spdif) < 0) | |
dd7b254d GP |
749 | return -EIO; |
750 | #endif | |
751 | ||
47b5d028 GP |
752 | #ifdef ECHOCARD_HAS_PHANTOM_POWER |
753 | if (set_phantom_power(chip, chip->phantom_power) < 0) | |
dd7b254d | 754 | return -EIO; |
47b5d028 | 755 | #endif |
dd7b254d | 756 | |
47b5d028 GP |
757 | #ifdef ECHOCARD_HAS_EXTERNAL_CLOCK |
758 | /* set_input_clock() also restores automute setting */ | |
759 | if (set_input_clock(chip, chip->input_clock) < 0) | |
dd7b254d | 760 | return -EIO; |
47b5d028 | 761 | #endif |
dd7b254d | 762 | |
47b5d028 GP |
763 | #ifdef ECHOCARD_HAS_OUTPUT_CLOCK_SWITCH |
764 | if (set_output_clock(chip, chip->output_clock) < 0) | |
dd7b254d GP |
765 | return -EIO; |
766 | #endif | |
767 | ||
768 | if (wait_handshake(chip) < 0) | |
769 | return -EIO; | |
770 | clear_handshake(chip); | |
47b5d028 GP |
771 | if (send_vector(chip, DSP_VC_UPDATE_FLAGS) < 0) |
772 | return -EIO; | |
dd7b254d | 773 | |
b5b4a41b | 774 | dev_dbg(chip->card->dev, "restore_dsp_rettings done\n"); |
47b5d028 | 775 | return 0; |
dd7b254d GP |
776 | } |
777 | ||
778 | ||
779 | ||
780 | /**************************************************************************** | |
781 | Transport functions | |
782 | ****************************************************************************/ | |
783 | ||
784 | /* set_audio_format() sets the format of the audio data in host memory for | |
785 | this pipe. Note that _MS_ (mono-to-stereo) playback modes are not used by ALSA | |
786 | but they are here because they are just mono while capturing */ | |
787 | static void set_audio_format(struct echoaudio *chip, u16 pipe_index, | |
788 | const struct audioformat *format) | |
789 | { | |
790 | u16 dsp_format; | |
791 | ||
792 | dsp_format = DSP_AUDIOFORM_SS_16LE; | |
793 | ||
794 | /* Look for super-interleave (no big-endian and 8 bits) */ | |
795 | if (format->interleave > 2) { | |
796 | switch (format->bits_per_sample) { | |
797 | case 16: | |
798 | dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_16LE; | |
799 | break; | |
800 | case 24: | |
801 | dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_24LE; | |
802 | break; | |
803 | case 32: | |
804 | dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_32LE; | |
805 | break; | |
806 | } | |
807 | dsp_format |= format->interleave; | |
808 | } else if (format->data_are_bigendian) { | |
809 | /* For big-endian data, only 32 bit samples are supported */ | |
810 | switch (format->interleave) { | |
811 | case 1: | |
812 | dsp_format = DSP_AUDIOFORM_MM_32BE; | |
813 | break; | |
814 | #ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32 | |
815 | case 2: | |
816 | dsp_format = DSP_AUDIOFORM_SS_32BE; | |
817 | break; | |
818 | #endif | |
819 | } | |
820 | } else if (format->interleave == 1 && | |
821 | format->bits_per_sample == 32 && !format->mono_to_stereo) { | |
822 | /* 32 bit little-endian mono->mono case */ | |
823 | dsp_format = DSP_AUDIOFORM_MM_32LE; | |
824 | } else { | |
825 | /* Handle the other little-endian formats */ | |
826 | switch (format->bits_per_sample) { | |
827 | case 8: | |
828 | if (format->interleave == 2) | |
829 | dsp_format = DSP_AUDIOFORM_SS_8; | |
830 | else | |
831 | dsp_format = DSP_AUDIOFORM_MS_8; | |
832 | break; | |
833 | default: | |
834 | case 16: | |
835 | if (format->interleave == 2) | |
836 | dsp_format = DSP_AUDIOFORM_SS_16LE; | |
837 | else | |
838 | dsp_format = DSP_AUDIOFORM_MS_16LE; | |
839 | break; | |
840 | case 24: | |
841 | if (format->interleave == 2) | |
842 | dsp_format = DSP_AUDIOFORM_SS_24LE; | |
843 | else | |
844 | dsp_format = DSP_AUDIOFORM_MS_24LE; | |
845 | break; | |
846 | case 32: | |
847 | if (format->interleave == 2) | |
848 | dsp_format = DSP_AUDIOFORM_SS_32LE; | |
849 | else | |
850 | dsp_format = DSP_AUDIOFORM_MS_32LE; | |
851 | break; | |
852 | } | |
853 | } | |
b5b4a41b SM |
854 | dev_dbg(chip->card->dev, |
855 | "set_audio_format[%d] = %x\n", pipe_index, dsp_format); | |
dd7b254d GP |
856 | chip->comm_page->audio_format[pipe_index] = cpu_to_le16(dsp_format); |
857 | } | |
858 | ||
859 | ||
860 | ||
861 | /* start_transport starts transport for a set of pipes. | |
862 | The bits 1 in channel_mask specify what pipes to start. Only the bit of the | |
863 | first channel must be set, regardless its interleave. | |
864 | Same thing for pause_ and stop_ -trasport below. */ | |
865 | static int start_transport(struct echoaudio *chip, u32 channel_mask, | |
866 | u32 cyclic_mask) | |
867 | { | |
b5b4a41b | 868 | dev_dbg(chip->card->dev, "start_transport %x\n", channel_mask); |
dd7b254d GP |
869 | |
870 | if (wait_handshake(chip)) | |
871 | return -EIO; | |
872 | ||
873 | chip->comm_page->cmd_start |= cpu_to_le32(channel_mask); | |
874 | ||
875 | if (chip->comm_page->cmd_start) { | |
876 | clear_handshake(chip); | |
877 | send_vector(chip, DSP_VC_START_TRANSFER); | |
878 | if (wait_handshake(chip)) | |
879 | return -EIO; | |
880 | /* Keep track of which pipes are transporting */ | |
881 | chip->active_mask |= channel_mask; | |
882 | chip->comm_page->cmd_start = 0; | |
883 | return 0; | |
884 | } | |
885 | ||
b5b4a41b | 886 | dev_err(chip->card->dev, "start_transport: No pipes to start!\n"); |
dd7b254d GP |
887 | return -EINVAL; |
888 | } | |
889 | ||
890 | ||
891 | ||
892 | static int pause_transport(struct echoaudio *chip, u32 channel_mask) | |
893 | { | |
b5b4a41b | 894 | dev_dbg(chip->card->dev, "pause_transport %x\n", channel_mask); |
dd7b254d GP |
895 | |
896 | if (wait_handshake(chip)) | |
897 | return -EIO; | |
898 | ||
899 | chip->comm_page->cmd_stop |= cpu_to_le32(channel_mask); | |
900 | chip->comm_page->cmd_reset = 0; | |
901 | if (chip->comm_page->cmd_stop) { | |
902 | clear_handshake(chip); | |
903 | send_vector(chip, DSP_VC_STOP_TRANSFER); | |
904 | if (wait_handshake(chip)) | |
905 | return -EIO; | |
906 | /* Keep track of which pipes are transporting */ | |
907 | chip->active_mask &= ~channel_mask; | |
908 | chip->comm_page->cmd_stop = 0; | |
909 | chip->comm_page->cmd_reset = 0; | |
910 | return 0; | |
911 | } | |
912 | ||
b5b4a41b | 913 | dev_warn(chip->card->dev, "pause_transport: No pipes to stop!\n"); |
dd7b254d GP |
914 | return 0; |
915 | } | |
916 | ||
917 | ||
918 | ||
919 | static int stop_transport(struct echoaudio *chip, u32 channel_mask) | |
920 | { | |
b5b4a41b | 921 | dev_dbg(chip->card->dev, "stop_transport %x\n", channel_mask); |
dd7b254d GP |
922 | |
923 | if (wait_handshake(chip)) | |
924 | return -EIO; | |
925 | ||
926 | chip->comm_page->cmd_stop |= cpu_to_le32(channel_mask); | |
927 | chip->comm_page->cmd_reset |= cpu_to_le32(channel_mask); | |
928 | if (chip->comm_page->cmd_reset) { | |
929 | clear_handshake(chip); | |
930 | send_vector(chip, DSP_VC_STOP_TRANSFER); | |
931 | if (wait_handshake(chip)) | |
932 | return -EIO; | |
933 | /* Keep track of which pipes are transporting */ | |
934 | chip->active_mask &= ~channel_mask; | |
935 | chip->comm_page->cmd_stop = 0; | |
936 | chip->comm_page->cmd_reset = 0; | |
937 | return 0; | |
938 | } | |
939 | ||
b5b4a41b | 940 | dev_warn(chip->card->dev, "stop_transport: No pipes to stop!\n"); |
dd7b254d GP |
941 | return 0; |
942 | } | |
943 | ||
944 | ||
945 | ||
946 | static inline int is_pipe_allocated(struct echoaudio *chip, u16 pipe_index) | |
947 | { | |
948 | return (chip->pipe_alloc_mask & (1 << pipe_index)); | |
949 | } | |
950 | ||
951 | ||
952 | ||
953 | /* Stops everything and turns off the DSP. All pipes should be already | |
954 | stopped and unallocated. */ | |
955 | static int rest_in_peace(struct echoaudio *chip) | |
956 | { | |
b5b4a41b SM |
957 | dev_dbg(chip->card->dev, |
958 | "rest_in_peace() open=%x\n", chip->pipe_alloc_mask); | |
dd7b254d GP |
959 | |
960 | /* Stops all active pipes (just to be sure) */ | |
961 | stop_transport(chip, chip->active_mask); | |
962 | ||
963 | set_meters_on(chip, FALSE); | |
964 | ||
965 | #ifdef ECHOCARD_HAS_MIDI | |
966 | enable_midi_input(chip, FALSE); | |
967 | #endif | |
968 | ||
969 | /* Go to sleep */ | |
970 | if (chip->dsp_code) { | |
971 | /* Make load_firmware do a complete reload */ | |
972 | chip->dsp_code = NULL; | |
973 | /* Put the DSP to sleep */ | |
974 | return send_vector(chip, DSP_VC_GO_COMATOSE); | |
975 | } | |
976 | return 0; | |
977 | } | |
978 | ||
979 | ||
980 | ||
981 | /* Fills the comm page with default values */ | |
982 | static int init_dsp_comm_page(struct echoaudio *chip) | |
983 | { | |
984 | /* Check if the compiler added extra padding inside the structure */ | |
985 | if (offsetof(struct comm_page, midi_output) != 0xbe0) { | |
b5b4a41b SM |
986 | dev_err(chip->card->dev, |
987 | "init_dsp_comm_page() - Invalid struct comm_page structure\n"); | |
dd7b254d GP |
988 | return -EPERM; |
989 | } | |
990 | ||
991 | /* Init all the basic stuff */ | |
992 | chip->card_name = ECHOCARD_NAME; | |
993 | chip->bad_board = TRUE; /* Set TRUE until DSP loaded */ | |
994 | chip->dsp_code = NULL; /* Current DSP code not loaded */ | |
dd7b254d GP |
995 | chip->asic_loaded = FALSE; |
996 | memset(chip->comm_page, 0, sizeof(struct comm_page)); | |
997 | ||
998 | /* Init the comm page */ | |
999 | chip->comm_page->comm_size = | |
e930e995 | 1000 | cpu_to_le32(sizeof(struct comm_page)); |
dd7b254d GP |
1001 | chip->comm_page->handshake = 0xffffffff; |
1002 | chip->comm_page->midi_out_free_count = | |
e930e995 HH |
1003 | cpu_to_le32(DSP_MIDI_OUT_FIFO_SIZE); |
1004 | chip->comm_page->sample_rate = cpu_to_le32(44100); | |
dd7b254d GP |
1005 | |
1006 | /* Set line levels so we don't blast any inputs on startup */ | |
1007 | memset(chip->comm_page->monitors, ECHOGAIN_MUTED, MONITOR_ARRAY_SIZE); | |
1008 | memset(chip->comm_page->vmixer, ECHOGAIN_MUTED, VMIXER_ARRAY_SIZE); | |
1009 | ||
1010 | return 0; | |
1011 | } | |
1012 | ||
1013 | ||
1014 | ||
47b5d028 GP |
1015 | /* This function initializes the chip structure with default values, ie. all |
1016 | * muted and internal clock source. Then it copies the settings to the DSP. | |
1017 | * This MUST be called after the DSP is up and running ! | |
1018 | */ | |
dd7b254d GP |
1019 | static int init_line_levels(struct echoaudio *chip) |
1020 | { | |
b5b4a41b | 1021 | dev_dbg(chip->card->dev, "init_line_levels\n"); |
47b5d028 GP |
1022 | memset(chip->output_gain, ECHOGAIN_MUTED, sizeof(chip->output_gain)); |
1023 | memset(chip->input_gain, ECHOGAIN_MUTED, sizeof(chip->input_gain)); | |
1024 | memset(chip->monitor_gain, ECHOGAIN_MUTED, sizeof(chip->monitor_gain)); | |
1025 | memset(chip->vmixer_gain, ECHOGAIN_MUTED, sizeof(chip->vmixer_gain)); | |
1026 | chip->input_clock = ECHO_CLOCK_INTERNAL; | |
1027 | chip->output_clock = ECHO_CLOCK_WORD; | |
1028 | chip->sample_rate = 44100; | |
1029 | return restore_dsp_rettings(chip); | |
dd7b254d GP |
1030 | } |
1031 | ||
1032 | ||
1033 | ||
1034 | /* This is low level part of the interrupt handler. | |
1035 | It returns -1 if the IRQ is not ours, or N>=0 if it is, where N is the number | |
1036 | of midi data in the input queue. */ | |
1037 | static int service_irq(struct echoaudio *chip) | |
1038 | { | |
1039 | int st; | |
1040 | ||
1041 | /* Read the DSP status register and see if this DSP generated this interrupt */ | |
1042 | if (get_dsp_register(chip, CHI32_STATUS_REG) & CHI32_STATUS_IRQ) { | |
1043 | st = 0; | |
1044 | #ifdef ECHOCARD_HAS_MIDI | |
1045 | /* Get and parse midi data if present */ | |
1046 | if (chip->comm_page->midi_input[0]) /* The count is at index 0 */ | |
1047 | st = midi_service_irq(chip); /* Returns how many midi bytes we received */ | |
1048 | #endif | |
1049 | /* Clear the hardware interrupt */ | |
1050 | chip->comm_page->midi_input[0] = 0; | |
1051 | send_vector(chip, DSP_VC_ACK_INT); | |
1052 | return st; | |
1053 | } | |
1054 | return -1; | |
1055 | } | |
1056 | ||
1057 | ||
1058 | ||
1059 | ||
1060 | /****************************************************************************** | |
1061 | Functions for opening and closing pipes | |
1062 | ******************************************************************************/ | |
1063 | ||
1064 | /* allocate_pipes is used to reserve audio pipes for your exclusive use. | |
1065 | The call will fail if some pipes are already allocated. */ | |
1066 | static int allocate_pipes(struct echoaudio *chip, struct audiopipe *pipe, | |
1067 | int pipe_index, int interleave) | |
1068 | { | |
1069 | int i; | |
1070 | u32 channel_mask; | |
1071 | char is_cyclic; | |
1072 | ||
b5b4a41b SM |
1073 | dev_dbg(chip->card->dev, |
1074 | "allocate_pipes: ch=%d int=%d\n", pipe_index, interleave); | |
dd7b254d GP |
1075 | |
1076 | if (chip->bad_board) | |
1077 | return -EIO; | |
1078 | ||
1079 | is_cyclic = 1; /* This driver uses cyclic buffers only */ | |
1080 | ||
1081 | for (channel_mask = i = 0; i < interleave; i++) | |
1082 | channel_mask |= 1 << (pipe_index + i); | |
1083 | if (chip->pipe_alloc_mask & channel_mask) { | |
b5b4a41b SM |
1084 | dev_err(chip->card->dev, |
1085 | "allocate_pipes: channel already open\n"); | |
dd7b254d GP |
1086 | return -EAGAIN; |
1087 | } | |
1088 | ||
1089 | chip->comm_page->position[pipe_index] = 0; | |
1090 | chip->pipe_alloc_mask |= channel_mask; | |
1091 | if (is_cyclic) | |
1092 | chip->pipe_cyclic_mask |= channel_mask; | |
1093 | pipe->index = pipe_index; | |
1094 | pipe->interleave = interleave; | |
1095 | pipe->state = PIPE_STATE_STOPPED; | |
1096 | ||
1097 | /* The counter register is where the DSP writes the 32 bit DMA | |
1098 | position for a pipe. The DSP is constantly updating this value as | |
1099 | it moves data. The DMA counter is in units of bytes, not samples. */ | |
1100 | pipe->dma_counter = &chip->comm_page->position[pipe_index]; | |
1101 | *pipe->dma_counter = 0; | |
b5b4a41b | 1102 | dev_dbg(chip->card->dev, "allocate_pipes: ok\n"); |
dd7b254d GP |
1103 | return pipe_index; |
1104 | } | |
1105 | ||
1106 | ||
1107 | ||
1108 | static int free_pipes(struct echoaudio *chip, struct audiopipe *pipe) | |
1109 | { | |
1110 | u32 channel_mask; | |
1111 | int i; | |
1112 | ||
b5b4a41b | 1113 | dev_dbg(chip->card->dev, "free_pipes: Pipe %d\n", pipe->index); |
da3cec35 TI |
1114 | if (snd_BUG_ON(!is_pipe_allocated(chip, pipe->index))) |
1115 | return -EINVAL; | |
1116 | if (snd_BUG_ON(pipe->state != PIPE_STATE_STOPPED)) | |
1117 | return -EINVAL; | |
dd7b254d GP |
1118 | |
1119 | for (channel_mask = i = 0; i < pipe->interleave; i++) | |
1120 | channel_mask |= 1 << (pipe->index + i); | |
1121 | ||
1122 | chip->pipe_alloc_mask &= ~channel_mask; | |
1123 | chip->pipe_cyclic_mask &= ~channel_mask; | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | ||
1128 | ||
1129 | /****************************************************************************** | |
1130 | Functions for managing the scatter-gather list | |
1131 | ******************************************************************************/ | |
1132 | ||
1133 | static int sglist_init(struct echoaudio *chip, struct audiopipe *pipe) | |
1134 | { | |
1135 | pipe->sglist_head = 0; | |
1136 | memset(pipe->sgpage.area, 0, PAGE_SIZE); | |
1137 | chip->comm_page->sglist_addr[pipe->index].addr = | |
1138 | cpu_to_le32(pipe->sgpage.addr); | |
1139 | return 0; | |
1140 | } | |
1141 | ||
1142 | ||
1143 | ||
1144 | static int sglist_add_mapping(struct echoaudio *chip, struct audiopipe *pipe, | |
1145 | dma_addr_t address, size_t length) | |
1146 | { | |
1147 | int head = pipe->sglist_head; | |
1148 | struct sg_entry *list = (struct sg_entry *)pipe->sgpage.area; | |
1149 | ||
1150 | if (head < MAX_SGLIST_ENTRIES - 1) { | |
1151 | list[head].addr = cpu_to_le32(address); | |
1152 | list[head].size = cpu_to_le32(length); | |
1153 | pipe->sglist_head++; | |
1154 | } else { | |
b5b4a41b | 1155 | dev_err(chip->card->dev, "SGlist: too many fragments\n"); |
dd7b254d GP |
1156 | return -ENOMEM; |
1157 | } | |
1158 | return 0; | |
1159 | } | |
1160 | ||
1161 | ||
1162 | ||
1163 | static inline int sglist_add_irq(struct echoaudio *chip, struct audiopipe *pipe) | |
1164 | { | |
1165 | return sglist_add_mapping(chip, pipe, 0, 0); | |
1166 | } | |
1167 | ||
1168 | ||
1169 | ||
1170 | static inline int sglist_wrap(struct echoaudio *chip, struct audiopipe *pipe) | |
1171 | { | |
1172 | return sglist_add_mapping(chip, pipe, pipe->sgpage.addr, 0); | |
1173 | } |