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1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.02/*******************************************************************************3 *4 * Module Name: rsmisc - Miscellaneous resource descriptors5 *6 ******************************************************************************/7 8#include <acpi/acpi.h>9#include "accommon.h"10#include "acresrc.h"11 12#define _COMPONENT ACPI_RESOURCES13ACPI_MODULE_NAME("rsmisc")14#define INIT_RESOURCE_TYPE(i) i->resource_offset15#define INIT_RESOURCE_LENGTH(i) i->aml_offset16#define INIT_TABLE_LENGTH(i) i->value17#define COMPARE_OPCODE(i) i->resource_offset18#define COMPARE_TARGET(i) i->aml_offset19#define COMPARE_VALUE(i) i->value20/*******************************************************************************21 *22 * FUNCTION: acpi_rs_convert_aml_to_resource23 *24 * PARAMETERS: resource - Pointer to the resource descriptor25 * aml - Where the AML descriptor is returned26 * info - Pointer to appropriate conversion table27 *28 * RETURN: Status29 *30 * DESCRIPTION: Convert an external AML resource descriptor to the corresponding31 * internal resource descriptor32 *33 ******************************************************************************/34acpi_status35acpi_rs_convert_aml_to_resource(struct acpi_resource *resource,36 union aml_resource *aml,37 struct acpi_rsconvert_info *info)38{39 acpi_rs_length aml_resource_length;40 void *source;41 void *destination;42 char *target;43 u8 count;44 u8 flags_mode = FALSE;45 u16 item_count = 0;46 u16 temp16 = 0;47 48 ACPI_FUNCTION_TRACE(rs_convert_aml_to_resource);49 50 if (!info) {51 return_ACPI_STATUS(AE_BAD_PARAMETER);52 }53 54 if (((acpi_size)resource) & 0x3) {55 56 /* Each internal resource struct is expected to be 32-bit aligned */57 58 ACPI_WARNING((AE_INFO,59 "Misaligned resource pointer (get): %p Type 0x%2.2X Length %u",60 resource, resource->type, resource->length));61 }62 63 /* Extract the resource Length field (does not include header length) */64 65 aml_resource_length = acpi_ut_get_resource_length(aml);66 67 /*68 * First table entry must be ACPI_RSC_INITxxx and must contain the69 * table length (# of table entries)70 */71 count = INIT_TABLE_LENGTH(info);72 while (count) {73 target = NULL;74 75 /*76 * Source is the external AML byte stream buffer,77 * destination is the internal resource descriptor78 */79 source = ACPI_ADD_PTR(void, aml, info->aml_offset);80 destination =81 ACPI_ADD_PTR(void, resource, info->resource_offset);82 83 switch (info->opcode) {84 case ACPI_RSC_INITGET:85 /*86 * Get the resource type and the initial (minimum) length87 */88 memset(resource, 0, INIT_RESOURCE_LENGTH(info));89 resource->type = INIT_RESOURCE_TYPE(info);90 resource->length = INIT_RESOURCE_LENGTH(info);91 break;92 93 case ACPI_RSC_INITSET:94 break;95 96 case ACPI_RSC_FLAGINIT:97 98 flags_mode = TRUE;99 break;100 101 case ACPI_RSC_1BITFLAG:102 /*103 * Mask and shift the flag bit104 */105 ACPI_SET8(destination,106 ((ACPI_GET8(source) >> info->value) & 0x01));107 break;108 109 case ACPI_RSC_2BITFLAG:110 /*111 * Mask and shift the flag bits112 */113 ACPI_SET8(destination,114 ((ACPI_GET8(source) >> info->value) & 0x03));115 break;116 117 case ACPI_RSC_3BITFLAG:118 /*119 * Mask and shift the flag bits120 */121 ACPI_SET8(destination,122 ((ACPI_GET8(source) >> info->value) & 0x07));123 break;124 125 case ACPI_RSC_6BITFLAG:126 /*127 * Mask and shift the flag bits128 */129 ACPI_SET8(destination,130 ((ACPI_GET8(source) >> info->value) & 0x3F));131 break;132 133 case ACPI_RSC_COUNT:134 135 item_count = ACPI_GET8(source);136 ACPI_SET8(destination, item_count);137 138 resource->length = resource->length +139 (info->value * (item_count - 1));140 break;141 142 case ACPI_RSC_COUNT16:143 144 item_count = aml_resource_length;145 ACPI_SET16(destination, item_count);146 147 resource->length = resource->length +148 (info->value * (item_count - 1));149 break;150 151 case ACPI_RSC_COUNT_GPIO_PIN:152 153 target = ACPI_ADD_PTR(void, aml, info->value);154 item_count = ACPI_GET16(target) - ACPI_GET16(source);155 156 resource->length = resource->length + item_count;157 item_count = item_count / 2;158 ACPI_SET16(destination, item_count);159 break;160 161 case ACPI_RSC_COUNT_GPIO_VEN:162 163 item_count = ACPI_GET8(source);164 ACPI_SET8(destination, item_count);165 166 resource->length =167 resource->length + (info->value * item_count);168 break;169 170 case ACPI_RSC_COUNT_GPIO_RES:171 /*172 * Vendor data is optional (length/offset may both be zero)173 * Examine vendor data length field first174 */175 target = ACPI_ADD_PTR(void, aml, (info->value + 2));176 if (ACPI_GET16(target)) {177 178 /* Use vendor offset to get resource source length */179 180 target = ACPI_ADD_PTR(void, aml, info->value);181 item_count =182 ACPI_GET16(target) - ACPI_GET16(source);183 } else {184 /* No vendor data to worry about */185 186 item_count = aml->large_header.resource_length +187 sizeof(struct aml_resource_large_header) -188 ACPI_GET16(source);189 }190 191 resource->length = resource->length + item_count;192 ACPI_SET16(destination, item_count);193 break;194 195 case ACPI_RSC_COUNT_SERIAL_VEN:196 197 ACPI_MOVE_16_TO_16(&temp16, source);198 item_count = temp16 - info->value;199 200 resource->length = resource->length + item_count;201 ACPI_SET16(destination, item_count);202 break;203 204 case ACPI_RSC_COUNT_SERIAL_RES:205 206 ACPI_MOVE_16_TO_16(&temp16, source);207 item_count = (aml_resource_length +208 sizeof(struct aml_resource_large_header))209 - temp16 - info->value;210 211 resource->length = resource->length + item_count;212 ACPI_SET16(destination, item_count);213 break;214 215 case ACPI_RSC_LENGTH:216 217 resource->length = resource->length + info->value;218 break;219 220 case ACPI_RSC_MOVE8:221 case ACPI_RSC_MOVE16:222 case ACPI_RSC_MOVE32:223 case ACPI_RSC_MOVE64:224 /*225 * Raw data move. Use the Info value field unless item_count has226 * been previously initialized via a COUNT opcode227 */228 if (info->value) {229 item_count = info->value;230 }231 acpi_rs_move_data(destination, source, item_count,232 info->opcode);233 break;234 235 case ACPI_RSC_MOVE_GPIO_PIN:236 237 /* Generate and set the PIN data pointer */238 239 target = (char *)ACPI_ADD_PTR(void, resource,240 (resource->length -241 item_count * 2));242 *(u16 **)destination = ACPI_CAST_PTR(u16, target);243 244 /* Copy the PIN data */245 246 source = ACPI_ADD_PTR(void, aml, ACPI_GET16(source));247 acpi_rs_move_data(target, source, item_count,248 info->opcode);249 break;250 251 case ACPI_RSC_MOVE_GPIO_RES:252 253 /* Generate and set the resource_source string pointer */254 255 target = (char *)ACPI_ADD_PTR(void, resource,256 (resource->length -257 item_count));258 *(u8 **)destination = ACPI_CAST_PTR(u8, target);259 260 /* Copy the resource_source string */261 262 source = ACPI_ADD_PTR(void, aml, ACPI_GET16(source));263 acpi_rs_move_data(target, source, item_count,264 info->opcode);265 break;266 267 case ACPI_RSC_MOVE_SERIAL_VEN:268 269 /* Generate and set the Vendor Data pointer */270 271 target = (char *)ACPI_ADD_PTR(void, resource,272 (resource->length -273 item_count));274 *(u8 **)destination = ACPI_CAST_PTR(u8, target);275 276 /* Copy the Vendor Data */277 278 source = ACPI_ADD_PTR(void, aml, info->value);279 acpi_rs_move_data(target, source, item_count,280 info->opcode);281 break;282 283 case ACPI_RSC_MOVE_SERIAL_RES:284 285 /* Generate and set the resource_source string pointer */286 287 target = (char *)ACPI_ADD_PTR(void, resource,288 (resource->length -289 item_count));290 *(u8 **)destination = ACPI_CAST_PTR(u8, target);291 292 /* Copy the resource_source string */293 294 ACPI_MOVE_16_TO_16(&temp16, source);295 source =296 ACPI_ADD_PTR(void, aml, (temp16 + info->value));297 acpi_rs_move_data(target, source, item_count,298 info->opcode);299 break;300 301 case ACPI_RSC_SET8:302 303 memset(destination, info->aml_offset, info->value);304 break;305 306 case ACPI_RSC_DATA8:307 308 target = ACPI_ADD_PTR(char, resource, info->value);309 memcpy(destination, source, ACPI_GET16(target));310 break;311 312 case ACPI_RSC_ADDRESS:313 /*314 * Common handler for address descriptor flags315 */316 if (!acpi_rs_get_address_common(resource, aml)) {317 return_ACPI_STATUS318 (AE_AML_INVALID_RESOURCE_TYPE);319 }320 break;321 322 case ACPI_RSC_SOURCE:323 /*324 * Optional resource_source (Index and String)325 */326 resource->length +=327 acpi_rs_get_resource_source(aml_resource_length,328 info->value,329 destination, aml, NULL);330 break;331 332 case ACPI_RSC_SOURCEX:333 /*334 * Optional resource_source (Index and String). This is the more335 * complicated case used by the Interrupt() macro336 */337 target = ACPI_ADD_PTR(char, resource,338 info->aml_offset +339 (item_count * 4));340 341 resource->length +=342 acpi_rs_get_resource_source(aml_resource_length,343 (acpi_rs_length)344 (((item_count -345 1) * sizeof(u32)) +346 info->value),347 destination, aml,348 target);349 break;350 351 case ACPI_RSC_BITMASK:352 /*353 * 8-bit encoded bitmask (DMA macro)354 */355 item_count =356 acpi_rs_decode_bitmask(ACPI_GET8(source),357 destination);358 if (item_count) {359 resource->length += (item_count - 1);360 }361 362 target = ACPI_ADD_PTR(char, resource, info->value);363 ACPI_SET8(target, item_count);364 break;365 366 case ACPI_RSC_BITMASK16:367 /*368 * 16-bit encoded bitmask (IRQ macro)369 */370 ACPI_MOVE_16_TO_16(&temp16, source);371 372 item_count =373 acpi_rs_decode_bitmask(temp16, destination);374 if (item_count) {375 resource->length += (item_count - 1);376 }377 378 target = ACPI_ADD_PTR(char, resource, info->value);379 ACPI_SET8(target, item_count);380 break;381 382 case ACPI_RSC_EXIT_NE:383 /*384 * control - Exit conversion if not equal385 */386 switch (info->resource_offset) {387 case ACPI_RSC_COMPARE_AML_LENGTH:388 389 if (aml_resource_length != info->value) {390 goto exit;391 }392 break;393 394 case ACPI_RSC_COMPARE_VALUE:395 396 if (ACPI_GET8(source) != info->value) {397 goto exit;398 }399 break;400 401 default:402 403 ACPI_ERROR((AE_INFO,404 "Invalid conversion sub-opcode"));405 return_ACPI_STATUS(AE_BAD_PARAMETER);406 }407 break;408 409 default:410 411 ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));412 return_ACPI_STATUS(AE_BAD_PARAMETER);413 }414 415 count--;416 info++;417 }418 419exit:420 if (!flags_mode) {421 422 /* Round the resource struct length up to the next boundary (32 or 64) */423 424 resource->length = (u32)425 ACPI_ROUND_UP_TO_NATIVE_WORD(resource->length);426 }427 return_ACPI_STATUS(AE_OK);428}429 430/*******************************************************************************431 *432 * FUNCTION: acpi_rs_convert_resource_to_aml433 *434 * PARAMETERS: resource - Pointer to the resource descriptor435 * aml - Where the AML descriptor is returned436 * info - Pointer to appropriate conversion table437 *438 * RETURN: Status439 *440 * DESCRIPTION: Convert an internal resource descriptor to the corresponding441 * external AML resource descriptor.442 *443 ******************************************************************************/444 445acpi_status446acpi_rs_convert_resource_to_aml(struct acpi_resource *resource,447 union aml_resource *aml,448 struct acpi_rsconvert_info *info)449{450 void *source = NULL;451 void *destination;452 char *target;453 acpi_rsdesc_size aml_length = 0;454 u8 count;455 u16 temp16 = 0;456 u16 item_count = 0;457 458 ACPI_FUNCTION_TRACE(rs_convert_resource_to_aml);459 460 if (!info) {461 return_ACPI_STATUS(AE_BAD_PARAMETER);462 }463 464 /*465 * First table entry must be ACPI_RSC_INITxxx and must contain the466 * table length (# of table entries)467 */468 count = INIT_TABLE_LENGTH(info);469 470 while (count) {471 /*472 * Source is the internal resource descriptor,473 * destination is the external AML byte stream buffer474 */475 source = ACPI_ADD_PTR(void, resource, info->resource_offset);476 destination = ACPI_ADD_PTR(void, aml, info->aml_offset);477 478 switch (info->opcode) {479 case ACPI_RSC_INITSET:480 481 memset(aml, 0, INIT_RESOURCE_LENGTH(info));482 aml_length = INIT_RESOURCE_LENGTH(info);483 acpi_rs_set_resource_header(INIT_RESOURCE_TYPE(info),484 aml_length, aml);485 break;486 487 case ACPI_RSC_INITGET:488 break;489 490 case ACPI_RSC_FLAGINIT:491 /*492 * Clear the flag byte493 */494 ACPI_SET8(destination, 0);495 break;496 497 case ACPI_RSC_1BITFLAG:498 /*499 * Mask and shift the flag bit500 */501 ACPI_SET_BIT(*ACPI_CAST8(destination), (u8)502 ((ACPI_GET8(source) & 0x01) << info->503 value));504 break;505 506 case ACPI_RSC_2BITFLAG:507 /*508 * Mask and shift the flag bits509 */510 ACPI_SET_BIT(*ACPI_CAST8(destination), (u8)511 ((ACPI_GET8(source) & 0x03) << info->512 value));513 break;514 515 case ACPI_RSC_3BITFLAG:516 /*517 * Mask and shift the flag bits518 */519 ACPI_SET_BIT(*ACPI_CAST8(destination), (u8)520 ((ACPI_GET8(source) & 0x07) << info->521 value));522 break;523 524 case ACPI_RSC_6BITFLAG:525 /*526 * Mask and shift the flag bits527 */528 ACPI_SET_BIT(*ACPI_CAST8(destination), (u8)529 ((ACPI_GET8(source) & 0x3F) << info->530 value));531 break;532 533 case ACPI_RSC_COUNT:534 535 item_count = ACPI_GET8(source);536 ACPI_SET8(destination, item_count);537 538 aml_length = (u16)539 (aml_length + (info->value * (item_count - 1)));540 break;541 542 case ACPI_RSC_COUNT16:543 544 item_count = ACPI_GET16(source);545 aml_length = (u16) (aml_length + item_count);546 acpi_rs_set_resource_length(aml_length, aml);547 break;548 549 case ACPI_RSC_COUNT_GPIO_PIN:550 551 item_count = ACPI_GET16(source);552 ACPI_SET16(destination, aml_length);553 554 aml_length = (u16)(aml_length + item_count * 2);555 target = ACPI_ADD_PTR(void, aml, info->value);556 ACPI_SET16(target, aml_length);557 acpi_rs_set_resource_length(aml_length, aml);558 break;559 560 case ACPI_RSC_COUNT_GPIO_VEN:561 562 item_count = ACPI_GET16(source);563 ACPI_SET16(destination, item_count);564 565 aml_length =566 (u16)(aml_length + (info->value * item_count));567 acpi_rs_set_resource_length(aml_length, aml);568 break;569 570 case ACPI_RSC_COUNT_GPIO_RES:571 572 /* Set resource source string length */573 574 item_count = ACPI_GET16(source);575 ACPI_SET16(destination, aml_length);576 577 /* Compute offset for the Vendor Data */578 579 aml_length = (u16)(aml_length + item_count);580 target = ACPI_ADD_PTR(void, aml, info->value);581 582 /* Set vendor offset only if there is vendor data */583 584 ACPI_SET16(target, aml_length);585 586 acpi_rs_set_resource_length(aml_length, aml);587 break;588 589 case ACPI_RSC_COUNT_SERIAL_VEN:590 591 item_count = ACPI_GET16(source);592 ACPI_SET16(destination, item_count + info->value);593 aml_length = (u16)(aml_length + item_count);594 acpi_rs_set_resource_length(aml_length, aml);595 break;596 597 case ACPI_RSC_COUNT_SERIAL_RES:598 599 item_count = ACPI_GET16(source);600 aml_length = (u16)(aml_length + item_count);601 acpi_rs_set_resource_length(aml_length, aml);602 break;603 604 case ACPI_RSC_LENGTH:605 606 acpi_rs_set_resource_length(info->value, aml);607 break;608 609 case ACPI_RSC_MOVE8:610 case ACPI_RSC_MOVE16:611 case ACPI_RSC_MOVE32:612 case ACPI_RSC_MOVE64:613 614 if (info->value) {615 item_count = info->value;616 }617 acpi_rs_move_data(destination, source, item_count,618 info->opcode);619 break;620 621 case ACPI_RSC_MOVE_GPIO_PIN:622 623 destination = (char *)ACPI_ADD_PTR(void, aml,624 ACPI_GET16625 (destination));626 source = *(u16 **)source;627 acpi_rs_move_data(destination, source, item_count,628 info->opcode);629 break;630 631 case ACPI_RSC_MOVE_GPIO_RES:632 633 /* Used for both resource_source string and vendor_data */634 635 destination = (char *)ACPI_ADD_PTR(void, aml,636 ACPI_GET16637 (destination));638 source = *(u8 **)source;639 acpi_rs_move_data(destination, source, item_count,640 info->opcode);641 break;642 643 case ACPI_RSC_MOVE_SERIAL_VEN:644 645 destination = (char *)ACPI_ADD_PTR(void, aml,646 (aml_length -647 item_count));648 source = *(u8 **)source;649 acpi_rs_move_data(destination, source, item_count,650 info->opcode);651 break;652 653 case ACPI_RSC_MOVE_SERIAL_RES:654 655 destination = (char *)ACPI_ADD_PTR(void, aml,656 (aml_length -657 item_count));658 source = *(u8 **)source;659 acpi_rs_move_data(destination, source, item_count,660 info->opcode);661 break;662 663 case ACPI_RSC_ADDRESS:664 665 /* Set the Resource Type, General Flags, and Type-Specific Flags */666 667 acpi_rs_set_address_common(aml, resource);668 break;669 670 case ACPI_RSC_SOURCEX:671 /*672 * Optional resource_source (Index and String)673 */674 aml_length =675 acpi_rs_set_resource_source(aml,676 (acpi_rs_length)677 aml_length, source);678 acpi_rs_set_resource_length(aml_length, aml);679 break;680 681 case ACPI_RSC_SOURCE:682 /*683 * Optional resource_source (Index and String). This is the more684 * complicated case used by the Interrupt() macro685 */686 aml_length =687 acpi_rs_set_resource_source(aml, info->value,688 source);689 acpi_rs_set_resource_length(aml_length, aml);690 break;691 692 case ACPI_RSC_BITMASK:693 /*694 * 8-bit encoded bitmask (DMA macro)695 */696 ACPI_SET8(destination,697 acpi_rs_encode_bitmask(source,698 *ACPI_ADD_PTR(u8,699 resource,700 info->701 value)));702 break;703 704 case ACPI_RSC_BITMASK16:705 /*706 * 16-bit encoded bitmask (IRQ macro)707 */708 temp16 =709 acpi_rs_encode_bitmask(source,710 *ACPI_ADD_PTR(u8, resource,711 info->value));712 ACPI_MOVE_16_TO_16(destination, &temp16);713 break;714 715 case ACPI_RSC_EXIT_LE:716 /*717 * control - Exit conversion if less than or equal718 */719 if (item_count <= info->value) {720 goto exit;721 }722 break;723 724 case ACPI_RSC_EXIT_NE:725 /*726 * control - Exit conversion if not equal727 */728 switch (COMPARE_OPCODE(info)) {729 case ACPI_RSC_COMPARE_VALUE:730 731 if (*ACPI_ADD_PTR(u8, resource,732 COMPARE_TARGET(info)) !=733 COMPARE_VALUE(info)) {734 goto exit;735 }736 break;737 738 default:739 740 ACPI_ERROR((AE_INFO,741 "Invalid conversion sub-opcode"));742 return_ACPI_STATUS(AE_BAD_PARAMETER);743 }744 break;745 746 case ACPI_RSC_EXIT_EQ:747 /*748 * control - Exit conversion if equal749 */750 if (*ACPI_ADD_PTR(u8, resource,751 COMPARE_TARGET(info)) ==752 COMPARE_VALUE(info)) {753 goto exit;754 }755 break;756 757 default:758 759 ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));760 return_ACPI_STATUS(AE_BAD_PARAMETER);761 }762 763 count--;764 info++;765 }766 767exit:768 return_ACPI_STATUS(AE_OK);769}770 771#if 0772/* Previous resource validations */773 774if (aml->ext_address64.revision_ID != AML_RESOURCE_EXTENDED_ADDRESS_REVISION) {775 return_ACPI_STATUS(AE_SUPPORT);776}777 778if (resource->data.start_dpf.performance_robustness >= 3) {779 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);780}781 782if (((aml->irq.flags & 0x09) == 0x00) || ((aml->irq.flags & 0x09) == 0x09)) {783 /*784 * Only [active_high, edge_sensitive] or [active_low, level_sensitive]785 * polarity/trigger interrupts are allowed (ACPI spec, section786 * "IRQ Format"), so 0x00 and 0x09 are illegal.787 */788 ACPI_ERROR((AE_INFO,789 "Invalid interrupt polarity/trigger in resource list, 0x%X",790 aml->irq.flags));791 return_ACPI_STATUS(AE_BAD_DATA);792}793 794resource->data.extended_irq.interrupt_count = temp8;795if (temp8 < 1) {796 797 /* Must have at least one IRQ */798 799 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);800}801 802if (resource->data.dma.transfer == 0x03) {803 ACPI_ERROR((AE_INFO, "Invalid DMA.Transfer preference (3)"));804 return_ACPI_STATUS(AE_BAD_DATA);805}806#endif807