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1/****************************************************************************2 3 Copyright Echo Digital Audio Corporation (c) 1998 - 20044 All rights reserved5 www.echoaudio.com6 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 of11 the GNU General Public License as published by the Free Software12 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 of16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the17 GNU General Public License for more details.18 19 You should have received a copy of the GNU General Public License20 along with this program; if not, write to the Free Software21 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-Driver27 were made by Giuliano Pochini <pochini@shiny.it>28 29****************************************************************************/30 31#if PAGE_SIZE < 409632#error PAGE_SIZE is < 4k33#endif34 35static int restore_dsp_rettings(struct echoaudio *chip);36 37 38/* Some vector commands involve the DSP reading or writing data to and from the39comm page; if you send one of these commands to the DSP, it will complete the40command and then write a non-zero value to the Handshake field in the41comm 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 20ms for the handshake from the DSP */47 for (i = 0; i < HANDSHAKE_TIMEOUT; i++) {48 /* Look for the handshake value */49 barrier();50 if (chip->comm_page->handshake) {51 return 0;52 }53 udelay(1);54 }55 56 dev_err(chip->card->dev, "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 vector63commands; send_vector writes a vector command to the DSP. Typically, this64causes 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 dev_err(chip->card->dev, "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 almost90exclusively 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 dev_dbg(chip->card->dev, "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 almost114exclusively 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 dev_err(chip->card->dev, "read_dsp: Set bad_board to true\n");131 return -EIO;132}133 134 135 136/****************************************************************************137 Firmware loading functions138 ****************************************************************************/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 as144part 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 dev_err(chip->card->dev,153 "Failed to read serial number\n");154 return -EIO;155 }156 }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]);160 return 0;161}162 163 164 165#ifndef ECHOCARD_HAS_ASIC166/* This card has no ASIC, just return ok */167static 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_ASIC178 179/* Load ASIC code - done after the DSP is loaded */180static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic)181{182 const struct firmware *fw;183 int err;184 u32 i, size;185 u8 *code;186 187 err = get_firmware(&fw, chip, asic);188 if (err < 0) {189 dev_warn(chip->card->dev, "Firmware not found !\n");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 }208 209 free_firmware(fw, chip);210 return 0;211 212la_error:213 dev_err(chip->card->dev, "failed on write_dsp\n");214 free_firmware(fw, chip);215 return -EIO;216}217 218#endif /* ECHOCARD_HAS_ASIC */219 220 221 222#ifdef DSP_56361223 224/* Install the resident loader for 56361 DSPs; The resident loader is on225the EPROM on the board for 56301 DSP. The resident loader is a tiny little226program that is used to load the real DSP code. */227static int install_resident_loader(struct echoaudio *chip)228{229 u32 address;230 int index, words, i;231 u16 *code;232 u32 status;233 const struct firmware *fw;234 235 /* 56361 cards only! This check is required by the old 56301-based236 Mona and Gina24 */237 if (chip->device_id != DEVICE_ID_56361)238 return 0;239 240 /* Look to see if the resident loader is present. If the resident241 loader is already installed, host flag 5 will be on. */242 status = get_dsp_register(chip, CHI32_STATUS_REG);243 if (status & CHI32_STATUS_REG_HF5) {244 dev_dbg(chip->card->dev,245 "Resident loader already installed; status is 0x%x\n",246 status);247 return 0;248 }249 250 i = get_firmware(&fw, chip, FW_361_LOADER);251 if (i < 0) {252 dev_warn(chip->card->dev, "Firmware not found !\n");253 return i;254 }255 256 /* The DSP code is an array of 16 bit words. The array is divided up257 into sections. The first word of each section is the size in words,258 followed by the section type.259 Since DSP addresses and data are 24 bits wide, they each take up two260 16 bit words in the array.261 This is a lot like the other loader loop, but it's not a loop, you262 don't write the memory type, and you don't write a zero at the end. */263 264 /* Set DSP format bits for 24 bit mode */265 set_dsp_register(chip, CHI32_CONTROL_REG,266 get_dsp_register(chip, CHI32_CONTROL_REG) | 0x900);267 268 code = (u16 *)fw->data;269 270 /* Skip the header section; the first word in the array is the size271 of the first section, so the first real section of code is pointed272 to by Code[0]. */273 index = code[0];274 275 /* Skip the section size, LRS block type, and DSP memory type */276 index += 3;277 278 /* Get the number of DSP words to write */279 words = code[index++];280 281 /* Get the DSP address for this block; 24 bits, so build from two words */282 address = ((u32)code[index] << 16) + code[index + 1];283 index += 2;284 285 /* Write the count to the DSP */286 if (write_dsp(chip, words)) {287 dev_err(chip->card->dev,288 "install_resident_loader: Failed to write word count!\n");289 goto irl_error;290 }291 /* Write the DSP address */292 if (write_dsp(chip, address)) {293 dev_err(chip->card->dev,294 "install_resident_loader: Failed to write DSP address!\n");295 goto irl_error;296 }297 /* Write out this block of code to the DSP */298 for (i = 0; i < words; i++) {299 u32 data;300 301 data = ((u32)code[index] << 16) + code[index + 1];302 if (write_dsp(chip, data)) {303 dev_err(chip->card->dev,304 "install_resident_loader: Failed to write DSP code\n");305 goto irl_error;306 }307 index += 2;308 }309 310 /* Wait for flag 5 to come up */311 for (i = 0; i < 200; i++) { /* Timeout is 50us * 200 = 10ms */312 udelay(50);313 status = get_dsp_register(chip, CHI32_STATUS_REG);314 if (status & CHI32_STATUS_REG_HF5)315 break;316 }317 318 if (i == 200) {319 dev_err(chip->card->dev, "Resident loader failed to set HF5\n");320 goto irl_error;321 }322 323 dev_dbg(chip->card->dev, "Resident loader successfully installed\n");324 free_firmware(fw, chip);325 return 0;326 327irl_error:328 free_firmware(fw, chip);329 return -EIO;330}331 332#endif /* DSP_56361 */333 334 335static int load_dsp(struct echoaudio *chip, u16 *code)336{337 u32 address, data;338 int index, words, i;339 340 if (chip->dsp_code == code) {341 dev_warn(chip->card->dev, "DSP is already loaded!\n");342 return 0;343 }344 chip->bad_board = true; /* Set true until DSP loaded */345 chip->dsp_code = NULL; /* Current DSP code not loaded */346 chip->asic_loaded = false; /* Loading the DSP code will reset the ASIC */347 348 dev_dbg(chip->card->dev, "load_dsp: Set bad_board to true\n");349 350 /* If this board requires a resident loader, install it. */351#ifdef DSP_56361352 i = install_resident_loader(chip);353 if (i < 0)354 return i;355#endif356 357 /* Send software reset command */358 if (send_vector(chip, DSP_VC_RESET) < 0) {359 dev_err(chip->card->dev,360 "LoadDsp: send_vector DSP_VC_RESET failed, Critical Failure\n");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) {375 dev_err(chip->card->dev,376 "load_dsp: Timeout waiting for CHI32_STATUS_REG_HF3\n");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) {413 dev_err(chip->card->dev,414 "load_dsp: failed to write number of DSP words\n");415 return -EIO;416 }417 if (write_dsp(chip, address) < 0) {418 dev_err(chip->card->dev,419 "load_dsp: failed to write DSP address\n");420 return -EIO;421 }422 if (write_dsp(chip, mem_type) < 0) {423 dev_err(chip->card->dev,424 "load_dsp: failed to write DSP memory type\n");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) {431 dev_err(chip->card->dev,432 "load_dsp: failed to write DSP data\n");433 return -EIO;434 }435 }436 }437 438 if (write_dsp(chip, 0) < 0) { /* We're done!!! */439 dev_err(chip->card->dev,440 "load_dsp: Failed to write final zero\n");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) {453 dev_err(chip->card->dev,454 "load_dsp: Failed to write DSP_FNC_SET_COMMPAGE_ADDR\n");455 return -EIO;456 }457 458 if (write_dsp(chip, chip->comm_page_phys) < 0) {459 dev_err(chip->card->dev,460 "load_dsp: Failed to write comm page address\n");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 to467 get it as part of the DSP init voodoo. */468 if (read_sn(chip) < 0) {469 dev_err(chip->card->dev,470 "load_dsp: Failed to read serial number\n");471 return -EIO;472 }473 474 chip->dsp_code = code; /* Show which DSP code loaded */475 chip->bad_board = false; /* DSP OK */476 return 0;477 }478 udelay(100);479 }480 481 dev_err(chip->card->dev,482 "load_dsp: DSP load timed out waiting for HF4\n");483 return -EIO;484}485 486 487 488/* load_firmware takes care of loading the DSP and any ASIC code. */489static int load_firmware(struct echoaudio *chip)490{491 const struct firmware *fw;492 int box_type, err;493 494 if (snd_BUG_ON(!chip->comm_page))495 return -EPERM;496 497 /* See if the ASIC is present and working - only if the DSP is already loaded */498 if (chip->dsp_code) {499 box_type = check_asic_status(chip);500 if (box_type >= 0)501 return box_type;502 /* ASIC check failed; force the DSP to reload */503 chip->dsp_code = NULL;504 }505 506 err = get_firmware(&fw, chip, chip->dsp_code_to_load);507 if (err < 0)508 return err;509 err = load_dsp(chip, (u16 *)fw->data);510 free_firmware(fw, chip);511 if (err < 0)512 return err;513 514 box_type = load_asic(chip);515 if (box_type < 0)516 return box_type; /* error */517 518 return box_type;519}520 521 522 523/****************************************************************************524 Mixer functions525 ****************************************************************************/526 527#if defined(ECHOCARD_HAS_INPUT_NOMINAL_LEVEL) || \528 defined(ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL)529 530/* Set the nominal level for an input or output bus (true = -10dBV, false = +4dBu) */531static int set_nominal_level(struct echoaudio *chip, u16 index, char consumer)532{533 if (snd_BUG_ON(index >= num_busses_out(chip) + num_busses_in(chip)))534 return -EINVAL;535 536 /* Wait for the handshake (OK even if ASIC is not loaded) */537 if (wait_handshake(chip))538 return -EIO;539 540 chip->nominal_level[index] = consumer;541 542 if (consumer)543 chip->comm_page->nominal_level_mask |= cpu_to_le32(1 << index);544 else545 chip->comm_page->nominal_level_mask &= ~cpu_to_le32(1 << index);546 547 return 0;548}549 550#endif /* ECHOCARD_HAS_*_NOMINAL_LEVEL */551 552 553 554/* Set the gain for a single physical output channel (dB). */555static int set_output_gain(struct echoaudio *chip, u16 channel, s8 gain)556{557 if (snd_BUG_ON(channel >= num_busses_out(chip)))558 return -EINVAL;559 560 if (wait_handshake(chip))561 return -EIO;562 563 /* Save the new value */564 chip->output_gain[channel] = gain;565 chip->comm_page->line_out_level[channel] = gain;566 return 0;567}568 569 570 571#ifdef ECHOCARD_HAS_MONITOR572/* Set the monitor level from an input bus to an output bus. */573static int set_monitor_gain(struct echoaudio *chip, u16 output, u16 input,574 s8 gain)575{576 if (snd_BUG_ON(output >= num_busses_out(chip) ||577 input >= num_busses_in(chip)))578 return -EINVAL;579 580 if (wait_handshake(chip))581 return -EIO;582 583 chip->monitor_gain[output][input] = gain;584 chip->comm_page->monitors[monitor_index(chip, output, input)] = gain;585 return 0;586}587#endif /* ECHOCARD_HAS_MONITOR */588 589 590/* Tell the DSP to read and update output, nominal & monitor levels in comm page. */591static int update_output_line_level(struct echoaudio *chip)592{593 if (wait_handshake(chip))594 return -EIO;595 clear_handshake(chip);596 return send_vector(chip, DSP_VC_UPDATE_OUTVOL);597}598 599 600 601/* Tell the DSP to read and update input levels in comm page */602static int update_input_line_level(struct echoaudio *chip)603{604 if (wait_handshake(chip))605 return -EIO;606 clear_handshake(chip);607 return send_vector(chip, DSP_VC_UPDATE_INGAIN);608}609 610 611 612/* set_meters_on turns the meters on or off. If meters are turned on, the DSP613will write the meter and clock detect values to the comm page at about 30Hz */614static void set_meters_on(struct echoaudio *chip, char on)615{616 if (on && !chip->meters_enabled) {617 send_vector(chip, DSP_VC_METERS_ON);618 chip->meters_enabled = 1;619 } else if (!on && chip->meters_enabled) {620 send_vector(chip, DSP_VC_METERS_OFF);621 chip->meters_enabled = 0;622 memset((s8 *)chip->comm_page->vu_meter, ECHOGAIN_MUTED,623 DSP_MAXPIPES);624 memset((s8 *)chip->comm_page->peak_meter, ECHOGAIN_MUTED,625 DSP_MAXPIPES);626 }627}628 629 630 631/* Fill out an the given array using the current values in the comm page.632Meters are written in the comm page by the DSP in this order:633 Output busses634 Input busses635 Output pipes (vmixer cards only)636 637This function assumes there are no more than 16 in/out busses or pipes638Meters is an array [3][16][2] of long. */639static void get_audio_meters(struct echoaudio *chip, long *meters)640{641 unsigned int i, m, n;642 643 for (i = 0 ; i < 96; i++)644 meters[i] = 0;645 646 for (m = 0, n = 0, i = 0; i < num_busses_out(chip); i++, m++) {647 meters[n++] = chip->comm_page->vu_meter[m];648 meters[n++] = chip->comm_page->peak_meter[m];649 }650 651#ifdef ECHOCARD_ECHO3G652 m = E3G_MAX_OUTPUTS; /* Skip unused meters */653#endif654 655 for (n = 32, 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#ifdef ECHOCARD_HAS_VMIXER660 for (n = 64, i = 0; i < num_pipes_out(chip); i++, m++) {661 meters[n++] = chip->comm_page->vu_meter[m];662 meters[n++] = chip->comm_page->peak_meter[m];663 }664#endif665}666 667 668 669static int restore_dsp_rettings(struct echoaudio *chip)670{671 int i, o, err;672 673 err = check_asic_status(chip);674 if (err < 0)675 return err;676 677 /* Gina20/Darla20 only. Should be harmless for other cards. */678 chip->comm_page->gd_clock_state = GD_CLOCK_UNDEF;679 chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_UNDEF;680 chip->comm_page->handshake = cpu_to_le32(0xffffffff);681 682 /* Restore output busses */683 for (i = 0; i < num_busses_out(chip); i++) {684 err = set_output_gain(chip, i, chip->output_gain[i]);685 if (err < 0)686 return err;687 }688 689#ifdef ECHOCARD_HAS_VMIXER690 for (i = 0; i < num_pipes_out(chip); i++)691 for (o = 0; o < num_busses_out(chip); o++) {692 err = set_vmixer_gain(chip, o, i,693 chip->vmixer_gain[o][i]);694 if (err < 0)695 return err;696 }697 if (update_vmixer_level(chip) < 0)698 return -EIO;699#endif /* ECHOCARD_HAS_VMIXER */700 701#ifdef ECHOCARD_HAS_MONITOR702 for (o = 0; o < num_busses_out(chip); o++)703 for (i = 0; i < num_busses_in(chip); i++) {704 err = set_monitor_gain(chip, o, i,705 chip->monitor_gain[o][i]);706 if (err < 0)707 return err;708 }709#endif /* ECHOCARD_HAS_MONITOR */710 711#ifdef ECHOCARD_HAS_INPUT_GAIN712 for (i = 0; i < num_busses_in(chip); i++) {713 err = set_input_gain(chip, i, chip->input_gain[i]);714 if (err < 0)715 return err;716 }717#endif /* ECHOCARD_HAS_INPUT_GAIN */718 719 err = update_output_line_level(chip);720 if (err < 0)721 return err;722 723 err = update_input_line_level(chip);724 if (err < 0)725 return err;726 727 err = set_sample_rate(chip, chip->sample_rate);728 if (err < 0)729 return err;730 731 if (chip->meters_enabled) {732 err = send_vector(chip, DSP_VC_METERS_ON);733 if (err < 0)734 return err;735 }736 737#ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH738 if (set_digital_mode(chip, chip->digital_mode) < 0)739 return -EIO;740#endif741 742#ifdef ECHOCARD_HAS_DIGITAL_IO743 if (set_professional_spdif(chip, chip->professional_spdif) < 0)744 return -EIO;745#endif746 747#ifdef ECHOCARD_HAS_PHANTOM_POWER748 if (set_phantom_power(chip, chip->phantom_power) < 0)749 return -EIO;750#endif751 752#ifdef ECHOCARD_HAS_EXTERNAL_CLOCK753 /* set_input_clock() also restores automute setting */754 if (set_input_clock(chip, chip->input_clock) < 0)755 return -EIO;756#endif757 758#ifdef ECHOCARD_HAS_OUTPUT_CLOCK_SWITCH759 if (set_output_clock(chip, chip->output_clock) < 0)760 return -EIO;761#endif762 763 if (wait_handshake(chip) < 0)764 return -EIO;765 clear_handshake(chip);766 if (send_vector(chip, DSP_VC_UPDATE_FLAGS) < 0)767 return -EIO;768 769 return 0;770}771 772 773 774/****************************************************************************775 Transport functions776 ****************************************************************************/777 778/* set_audio_format() sets the format of the audio data in host memory for779this pipe. Note that _MS_ (mono-to-stereo) playback modes are not used by ALSA780but they are here because they are just mono while capturing */781static void set_audio_format(struct echoaudio *chip, u16 pipe_index,782 const struct audioformat *format)783{784 u16 dsp_format;785 786 dsp_format = DSP_AUDIOFORM_SS_16LE;787 788 /* Look for super-interleave (no big-endian and 8 bits) */789 if (format->interleave > 2) {790 switch (format->bits_per_sample) {791 case 16:792 dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_16LE;793 break;794 case 24:795 dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_24LE;796 break;797 case 32:798 dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_32LE;799 break;800 }801 dsp_format |= format->interleave;802 } else if (format->data_are_bigendian) {803 /* For big-endian data, only 32 bit samples are supported */804 switch (format->interleave) {805 case 1:806 dsp_format = DSP_AUDIOFORM_MM_32BE;807 break;808#ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32809 case 2:810 dsp_format = DSP_AUDIOFORM_SS_32BE;811 break;812#endif813 }814 } else if (format->interleave == 1 &&815 format->bits_per_sample == 32 && !format->mono_to_stereo) {816 /* 32 bit little-endian mono->mono case */817 dsp_format = DSP_AUDIOFORM_MM_32LE;818 } else {819 /* Handle the other little-endian formats */820 switch (format->bits_per_sample) {821 case 8:822 if (format->interleave == 2)823 dsp_format = DSP_AUDIOFORM_SS_8;824 else825 dsp_format = DSP_AUDIOFORM_MS_8;826 break;827 default:828 case 16:829 if (format->interleave == 2)830 dsp_format = DSP_AUDIOFORM_SS_16LE;831 else832 dsp_format = DSP_AUDIOFORM_MS_16LE;833 break;834 case 24:835 if (format->interleave == 2)836 dsp_format = DSP_AUDIOFORM_SS_24LE;837 else838 dsp_format = DSP_AUDIOFORM_MS_24LE;839 break;840 case 32:841 if (format->interleave == 2)842 dsp_format = DSP_AUDIOFORM_SS_32LE;843 else844 dsp_format = DSP_AUDIOFORM_MS_32LE;845 break;846 }847 }848 dev_dbg(chip->card->dev,849 "set_audio_format[%d] = %x\n", pipe_index, dsp_format);850 chip->comm_page->audio_format[pipe_index] = cpu_to_le16(dsp_format);851}852 853 854 855/* start_transport starts transport for a set of pipes.856The bits 1 in channel_mask specify what pipes to start. Only the bit of the857first channel must be set, regardless its interleave.858Same thing for pause_ and stop_ -trasport below. */859static int start_transport(struct echoaudio *chip, u32 channel_mask,860 u32 cyclic_mask)861{862 863 if (wait_handshake(chip))864 return -EIO;865 866 chip->comm_page->cmd_start |= cpu_to_le32(channel_mask);867 868 if (chip->comm_page->cmd_start) {869 clear_handshake(chip);870 send_vector(chip, DSP_VC_START_TRANSFER);871 if (wait_handshake(chip))872 return -EIO;873 /* Keep track of which pipes are transporting */874 chip->active_mask |= channel_mask;875 chip->comm_page->cmd_start = 0;876 return 0;877 }878 879 dev_err(chip->card->dev, "start_transport: No pipes to start!\n");880 return -EINVAL;881}882 883 884 885static int pause_transport(struct echoaudio *chip, u32 channel_mask)886{887 888 if (wait_handshake(chip))889 return -EIO;890 891 chip->comm_page->cmd_stop |= cpu_to_le32(channel_mask);892 chip->comm_page->cmd_reset = 0;893 if (chip->comm_page->cmd_stop) {894 clear_handshake(chip);895 send_vector(chip, DSP_VC_STOP_TRANSFER);896 if (wait_handshake(chip))897 return -EIO;898 /* Keep track of which pipes are transporting */899 chip->active_mask &= ~channel_mask;900 chip->comm_page->cmd_stop = 0;901 chip->comm_page->cmd_reset = 0;902 return 0;903 }904 905 dev_dbg(chip->card->dev, "pause_transport: No pipes to stop!\n");906 return 0;907}908 909 910 911static int stop_transport(struct echoaudio *chip, u32 channel_mask)912{913 914 if (wait_handshake(chip))915 return -EIO;916 917 chip->comm_page->cmd_stop |= cpu_to_le32(channel_mask);918 chip->comm_page->cmd_reset |= cpu_to_le32(channel_mask);919 if (chip->comm_page->cmd_reset) {920 clear_handshake(chip);921 send_vector(chip, DSP_VC_STOP_TRANSFER);922 if (wait_handshake(chip))923 return -EIO;924 /* Keep track of which pipes are transporting */925 chip->active_mask &= ~channel_mask;926 chip->comm_page->cmd_stop = 0;927 chip->comm_page->cmd_reset = 0;928 return 0;929 }930 931 dev_dbg(chip->card->dev, "stop_transport: No pipes to stop!\n");932 return 0;933}934 935 936 937static inline int is_pipe_allocated(struct echoaudio *chip, u16 pipe_index)938{939 return (chip->pipe_alloc_mask & (1 << pipe_index));940}941 942 943 944/* Stops everything and turns off the DSP. All pipes should be already945stopped and unallocated. */946static int rest_in_peace(struct echoaudio *chip)947{948 949 /* Stops all active pipes (just to be sure) */950 stop_transport(chip, chip->active_mask);951 952 set_meters_on(chip, false);953 954#ifdef ECHOCARD_HAS_MIDI955 enable_midi_input(chip, false);956#endif957 958 /* Go to sleep */959 if (chip->dsp_code) {960 /* Make load_firmware do a complete reload */961 chip->dsp_code = NULL;962 /* Put the DSP to sleep */963 return send_vector(chip, DSP_VC_GO_COMATOSE);964 }965 return 0;966}967 968 969 970/* Fills the comm page with default values */971static int init_dsp_comm_page(struct echoaudio *chip)972{973 /* Check if the compiler added extra padding inside the structure */974 if (offsetof(struct comm_page, midi_output) != 0xbe0) {975 dev_err(chip->card->dev,976 "init_dsp_comm_page() - Invalid struct comm_page structure\n");977 return -EPERM;978 }979 980 /* Init all the basic stuff */981 chip->card_name = ECHOCARD_NAME;982 chip->bad_board = true; /* Set true until DSP loaded */983 chip->dsp_code = NULL; /* Current DSP code not loaded */984 chip->asic_loaded = false;985 memset(chip->comm_page, 0, sizeof(struct comm_page));986 987 /* Init the comm page */988 chip->comm_page->comm_size =989 cpu_to_le32(sizeof(struct comm_page));990 chip->comm_page->handshake = cpu_to_le32(0xffffffff);991 chip->comm_page->midi_out_free_count =992 cpu_to_le32(DSP_MIDI_OUT_FIFO_SIZE);993 chip->comm_page->sample_rate = cpu_to_le32(44100);994 995 /* Set line levels so we don't blast any inputs on startup */996 memset(chip->comm_page->monitors, ECHOGAIN_MUTED, MONITOR_ARRAY_SIZE);997 memset(chip->comm_page->vmixer, ECHOGAIN_MUTED, VMIXER_ARRAY_SIZE);998 999 return 0;1000}1001 1002 1003 1004/* This function initializes the chip structure with default values, ie. all1005 * muted and internal clock source. Then it copies the settings to the DSP.1006 * This MUST be called after the DSP is up and running !1007 */1008static int init_line_levels(struct echoaudio *chip)1009{1010 memset(chip->output_gain, ECHOGAIN_MUTED, sizeof(chip->output_gain));1011 memset(chip->input_gain, ECHOGAIN_MUTED, sizeof(chip->input_gain));1012 memset(chip->monitor_gain, ECHOGAIN_MUTED, sizeof(chip->monitor_gain));1013 memset(chip->vmixer_gain, ECHOGAIN_MUTED, sizeof(chip->vmixer_gain));1014 chip->input_clock = ECHO_CLOCK_INTERNAL;1015 chip->output_clock = ECHO_CLOCK_WORD;1016 chip->sample_rate = 44100;1017 return restore_dsp_rettings(chip);1018}1019 1020 1021 1022/* This is low level part of the interrupt handler.1023It returns -1 if the IRQ is not ours, or N>=0 if it is, where N is the number1024of midi data in the input queue. */1025static int service_irq(struct echoaudio *chip)1026{1027 int st;1028 1029 /* Read the DSP status register and see if this DSP generated this interrupt */1030 if (get_dsp_register(chip, CHI32_STATUS_REG) & CHI32_STATUS_IRQ) {1031 st = 0;1032#ifdef ECHOCARD_HAS_MIDI1033 /* Get and parse midi data if present */1034 if (chip->comm_page->midi_input[0]) /* The count is at index 0 */1035 st = midi_service_irq(chip); /* Returns how many midi bytes we received */1036#endif1037 /* Clear the hardware interrupt */1038 chip->comm_page->midi_input[0] = 0;1039 send_vector(chip, DSP_VC_ACK_INT);1040 return st;1041 }1042 return -1;1043}1044 1045 1046 1047 1048/******************************************************************************1049 Functions for opening and closing pipes1050 ******************************************************************************/1051 1052/* allocate_pipes is used to reserve audio pipes for your exclusive use.1053The call will fail if some pipes are already allocated. */1054static int allocate_pipes(struct echoaudio *chip, struct audiopipe *pipe,1055 int pipe_index, int interleave)1056{1057 int i;1058 u32 channel_mask;1059 1060 dev_dbg(chip->card->dev,1061 "allocate_pipes: ch=%d int=%d\n", pipe_index, interleave);1062 1063 if (chip->bad_board)1064 return -EIO;1065 1066 for (channel_mask = i = 0; i < interleave; i++)1067 channel_mask |= 1 << (pipe_index + i);1068 if (chip->pipe_alloc_mask & channel_mask) {1069 dev_err(chip->card->dev,1070 "allocate_pipes: channel already open\n");1071 return -EAGAIN;1072 }1073 1074 chip->comm_page->position[pipe_index] = 0;1075 chip->pipe_alloc_mask |= channel_mask;1076 /* This driver uses cyclic buffers only */1077 chip->pipe_cyclic_mask |= channel_mask;1078 pipe->index = pipe_index;1079 pipe->interleave = interleave;1080 pipe->state = PIPE_STATE_STOPPED;1081 1082 /* The counter register is where the DSP writes the 32 bit DMA1083 position for a pipe. The DSP is constantly updating this value as1084 it moves data. The DMA counter is in units of bytes, not samples. */1085 pipe->dma_counter = (__le32 *)&chip->comm_page->position[pipe_index];1086 *pipe->dma_counter = 0;1087 return pipe_index;1088}1089 1090 1091 1092static int free_pipes(struct echoaudio *chip, struct audiopipe *pipe)1093{1094 u32 channel_mask;1095 int i;1096 1097 if (snd_BUG_ON(!is_pipe_allocated(chip, pipe->index)))1098 return -EINVAL;1099 if (snd_BUG_ON(pipe->state != PIPE_STATE_STOPPED))1100 return -EINVAL;1101 1102 for (channel_mask = i = 0; i < pipe->interleave; i++)1103 channel_mask |= 1 << (pipe->index + i);1104 1105 chip->pipe_alloc_mask &= ~channel_mask;1106 chip->pipe_cyclic_mask &= ~channel_mask;1107 return 0;1108}1109 1110 1111 1112/******************************************************************************1113 Functions for managing the scatter-gather list1114******************************************************************************/1115 1116static int sglist_init(struct echoaudio *chip, struct audiopipe *pipe)1117{1118 pipe->sglist_head = 0;1119 memset(pipe->sgpage.area, 0, PAGE_SIZE);1120 chip->comm_page->sglist_addr[pipe->index].addr =1121 cpu_to_le32(pipe->sgpage.addr);1122 return 0;1123}1124 1125 1126 1127static int sglist_add_mapping(struct echoaudio *chip, struct audiopipe *pipe,1128 dma_addr_t address, size_t length)1129{1130 int head = pipe->sglist_head;1131 struct sg_entry *list = (struct sg_entry *)pipe->sgpage.area;1132 1133 if (head < MAX_SGLIST_ENTRIES - 1) {1134 list[head].addr = cpu_to_le32(address);1135 list[head].size = cpu_to_le32(length);1136 pipe->sglist_head++;1137 } else {1138 dev_err(chip->card->dev, "SGlist: too many fragments\n");1139 return -ENOMEM;1140 }1141 return 0;1142}1143 1144 1145 1146static inline int sglist_add_irq(struct echoaudio *chip, struct audiopipe *pipe)1147{1148 return sglist_add_mapping(chip, pipe, 0, 0);1149}1150 1151 1152 1153static inline int sglist_wrap(struct echoaudio *chip, struct audiopipe *pipe)1154{1155 return sglist_add_mapping(chip, pipe, pipe->sgpage.addr, 0);1156}1157