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