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path: root/drivers/acpi/acpica/tbfadt.c
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Diffstat (limited to 'drivers/acpi/acpica/tbfadt.c')
-rw-r--r--drivers/acpi/acpica/tbfadt.c144
1 files changed, 82 insertions, 62 deletions
diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 4c9c760db4a4..390651860bf0 100644
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -49,9 +49,10 @@
49ACPI_MODULE_NAME("tbfadt") 49ACPI_MODULE_NAME("tbfadt")
50 50
51/* Local prototypes */ 51/* Local prototypes */
52static ACPI_INLINE void 52static void
53acpi_tb_init_generic_address(struct acpi_generic_address *generic_address, 53acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
54 u8 space_id, u8 byte_width, u64 address); 54 u8 space_id,
55 u8 byte_width, u64 address, char *register_name);
55 56
56static void acpi_tb_convert_fadt(void); 57static void acpi_tb_convert_fadt(void);
57 58
@@ -172,7 +173,7 @@ static struct acpi_fadt_pm_info fadt_pm_info_table[] = {
172 * 173 *
173 * PARAMETERS: generic_address - GAS struct to be initialized 174 * PARAMETERS: generic_address - GAS struct to be initialized
174 * byte_width - Width of this register 175 * byte_width - Width of this register
175 * Address - Address of the register 176 * address - Address of the register
176 * 177 *
177 * RETURN: None 178 * RETURN: None
178 * 179 *
@@ -182,10 +183,25 @@ static struct acpi_fadt_pm_info fadt_pm_info_table[] = {
182 * 183 *
183 ******************************************************************************/ 184 ******************************************************************************/
184 185
185static ACPI_INLINE void 186static void
186acpi_tb_init_generic_address(struct acpi_generic_address *generic_address, 187acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
187 u8 space_id, u8 byte_width, u64 address) 188 u8 space_id,
189 u8 byte_width, u64 address, char *register_name)
188{ 190{
191 u8 bit_width;
192
193 /* Bit width field in the GAS is only one byte long, 255 max */
194
195 bit_width = (u8)(byte_width * 8);
196
197 if (byte_width > 31) { /* (31*8)=248 */
198 ACPI_ERROR((AE_INFO,
199 "%s - 32-bit FADT register is too long (%u bytes, %u bits) "
200 "to convert to GAS struct - 255 bits max, truncating",
201 register_name, byte_width, (byte_width * 8)));
202
203 bit_width = 255;
204 }
189 205
190 /* 206 /*
191 * The 64-bit Address field is non-aligned in the byte packed 207 * The 64-bit Address field is non-aligned in the byte packed
@@ -196,7 +212,7 @@ acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
196 /* All other fields are byte-wide */ 212 /* All other fields are byte-wide */
197 213
198 generic_address->space_id = space_id; 214 generic_address->space_id = space_id;
199 generic_address->bit_width = (u8)ACPI_MUL_8(byte_width); 215 generic_address->bit_width = bit_width;
200 generic_address->bit_offset = 0; 216 generic_address->bit_offset = 0;
201 generic_address->access_width = 0; /* Access width ANY */ 217 generic_address->access_width = 0; /* Access width ANY */
202} 218}
@@ -267,8 +283,8 @@ void acpi_tb_parse_fadt(u32 table_index)
267 * 283 *
268 * FUNCTION: acpi_tb_create_local_fadt 284 * FUNCTION: acpi_tb_create_local_fadt
269 * 285 *
270 * PARAMETERS: Table - Pointer to BIOS FADT 286 * PARAMETERS: table - Pointer to BIOS FADT
271 * Length - Length of the table 287 * length - Length of the table
272 * 288 *
273 * RETURN: None 289 * RETURN: None
274 * 290 *
@@ -287,11 +303,11 @@ void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length)
287 * a warning. 303 * a warning.
288 */ 304 */
289 if (length > sizeof(struct acpi_table_fadt)) { 305 if (length > sizeof(struct acpi_table_fadt)) {
290 ACPI_WARNING((AE_INFO, 306 ACPI_BIOS_WARNING((AE_INFO,
291 "FADT (revision %u) is longer than ACPI 5.0 version, " 307 "FADT (revision %u) is longer than ACPI 5.0 version, "
292 "truncating length %u to %u", 308 "truncating length %u to %u",
293 table->revision, length, 309 table->revision, length,
294 (u32)sizeof(struct acpi_table_fadt))); 310 (u32)sizeof(struct acpi_table_fadt)));
295 } 311 }
296 312
297 /* Clear the entire local FADT */ 313 /* Clear the entire local FADT */
@@ -436,11 +452,13 @@ static void acpi_tb_convert_fadt(void)
436 * they must match. 452 * they must match.
437 */ 453 */
438 if (address64->address && address32 && 454 if (address64->address && address32 &&
439 (address64->address != (u64) address32)) { 455 (address64->address != (u64)address32)) {
440 ACPI_ERROR((AE_INFO, 456 ACPI_BIOS_ERROR((AE_INFO,
441 "32/64X address mismatch in %s: 0x%8.8X/0x%8.8X%8.8X, using 32", 457 "32/64X address mismatch in FADT/%s: "
442 fadt_info_table[i].name, address32, 458 "0x%8.8X/0x%8.8X%8.8X, using 32",
443 ACPI_FORMAT_UINT64(address64->address))); 459 fadt_info_table[i].name, address32,
460 ACPI_FORMAT_UINT64(address64->
461 address)));
444 } 462 }
445 463
446 /* Always use 32-bit address if it is valid (non-null) */ 464 /* Always use 32-bit address if it is valid (non-null) */
@@ -456,7 +474,8 @@ static void acpi_tb_convert_fadt(void)
456 &acpi_gbl_FADT, 474 &acpi_gbl_FADT,
457 fadt_info_table 475 fadt_info_table
458 [i].length), 476 [i].length),
459 (u64) address32); 477 (u64) address32,
478 fadt_info_table[i].name);
460 } 479 }
461 } 480 }
462} 481}
@@ -465,7 +484,7 @@ static void acpi_tb_convert_fadt(void)
465 * 484 *
466 * FUNCTION: acpi_tb_validate_fadt 485 * FUNCTION: acpi_tb_validate_fadt
467 * 486 *
468 * PARAMETERS: Table - Pointer to the FADT to be validated 487 * PARAMETERS: table - Pointer to the FADT to be validated
469 * 488 *
470 * RETURN: None 489 * RETURN: None
471 * 490 *
@@ -494,25 +513,25 @@ static void acpi_tb_validate_fadt(void)
494 * DSDT/X_DSDT) would indicate the presence of two FACS or two DSDT tables. 513 * DSDT/X_DSDT) would indicate the presence of two FACS or two DSDT tables.
495 */ 514 */
496 if (acpi_gbl_FADT.facs && 515 if (acpi_gbl_FADT.facs &&
497 (acpi_gbl_FADT.Xfacs != (u64) acpi_gbl_FADT.facs)) { 516 (acpi_gbl_FADT.Xfacs != (u64)acpi_gbl_FADT.facs)) {
498 ACPI_WARNING((AE_INFO, 517 ACPI_BIOS_WARNING((AE_INFO,
499 "32/64X FACS address mismatch in FADT - " 518 "32/64X FACS address mismatch in FADT - "
500 "0x%8.8X/0x%8.8X%8.8X, using 32", 519 "0x%8.8X/0x%8.8X%8.8X, using 32",
501 acpi_gbl_FADT.facs, 520 acpi_gbl_FADT.facs,
502 ACPI_FORMAT_UINT64(acpi_gbl_FADT.Xfacs))); 521 ACPI_FORMAT_UINT64(acpi_gbl_FADT.Xfacs)));
503 522
504 acpi_gbl_FADT.Xfacs = (u64) acpi_gbl_FADT.facs; 523 acpi_gbl_FADT.Xfacs = (u64)acpi_gbl_FADT.facs;
505 } 524 }
506 525
507 if (acpi_gbl_FADT.dsdt && 526 if (acpi_gbl_FADT.dsdt &&
508 (acpi_gbl_FADT.Xdsdt != (u64) acpi_gbl_FADT.dsdt)) { 527 (acpi_gbl_FADT.Xdsdt != (u64)acpi_gbl_FADT.dsdt)) {
509 ACPI_WARNING((AE_INFO, 528 ACPI_BIOS_WARNING((AE_INFO,
510 "32/64X DSDT address mismatch in FADT - " 529 "32/64X DSDT address mismatch in FADT - "
511 "0x%8.8X/0x%8.8X%8.8X, using 32", 530 "0x%8.8X/0x%8.8X%8.8X, using 32",
512 acpi_gbl_FADT.dsdt, 531 acpi_gbl_FADT.dsdt,
513 ACPI_FORMAT_UINT64(acpi_gbl_FADT.Xdsdt))); 532 ACPI_FORMAT_UINT64(acpi_gbl_FADT.Xdsdt)));
514 533
515 acpi_gbl_FADT.Xdsdt = (u64) acpi_gbl_FADT.dsdt; 534 acpi_gbl_FADT.Xdsdt = (u64)acpi_gbl_FADT.dsdt;
516 } 535 }
517 536
518 /* If Hardware Reduced flag is set, we are all done */ 537 /* If Hardware Reduced flag is set, we are all done */
@@ -542,10 +561,10 @@ static void acpi_tb_validate_fadt(void)
542 */ 561 */
543 if (address64->address && 562 if (address64->address &&
544 (address64->bit_width != ACPI_MUL_8(length))) { 563 (address64->bit_width != ACPI_MUL_8(length))) {
545 ACPI_WARNING((AE_INFO, 564 ACPI_BIOS_WARNING((AE_INFO,
546 "32/64X length mismatch in %s: %u/%u", 565 "32/64X length mismatch in FADT/%s: %u/%u",
547 name, ACPI_MUL_8(length), 566 name, ACPI_MUL_8(length),
548 address64->bit_width)); 567 address64->bit_width));
549 } 568 }
550 569
551 if (fadt_info_table[i].type & ACPI_FADT_REQUIRED) { 570 if (fadt_info_table[i].type & ACPI_FADT_REQUIRED) {
@@ -554,29 +573,29 @@ static void acpi_tb_validate_fadt(void)
554 * Both the address and length must be non-zero. 573 * Both the address and length must be non-zero.
555 */ 574 */
556 if (!address64->address || !length) { 575 if (!address64->address || !length) {
557 ACPI_ERROR((AE_INFO, 576 ACPI_BIOS_ERROR((AE_INFO,
558 "Required field %s has zero address and/or length:" 577 "Required FADT field %s has zero address and/or length: "
559 " 0x%8.8X%8.8X/0x%X", 578 "0x%8.8X%8.8X/0x%X",
560 name, 579 name,
561 ACPI_FORMAT_UINT64(address64-> 580 ACPI_FORMAT_UINT64(address64->
562 address), 581 address),
563 length)); 582 length));
564 } 583 }
565 } else if (fadt_info_table[i].type & ACPI_FADT_SEPARATE_LENGTH) { 584 } else if (fadt_info_table[i].type & ACPI_FADT_SEPARATE_LENGTH) {
566 /* 585 /*
567 * Field is optional (PM2Control, GPE0, GPE1) AND has its own 586 * Field is optional (Pm2_control, GPE0, GPE1) AND has its own
568 * length field. If present, both the address and length must 587 * length field. If present, both the address and length must
569 * be valid. 588 * be valid.
570 */ 589 */
571 if ((address64->address && !length) || 590 if ((address64->address && !length) ||
572 (!address64->address && length)) { 591 (!address64->address && length)) {
573 ACPI_WARNING((AE_INFO, 592 ACPI_BIOS_WARNING((AE_INFO,
574 "Optional field %s has zero address or length: " 593 "Optional FADT field %s has zero address or length: "
575 "0x%8.8X%8.8X/0x%X", 594 "0x%8.8X%8.8X/0x%X",
576 name, 595 name,
577 ACPI_FORMAT_UINT64(address64-> 596 ACPI_FORMAT_UINT64
578 address), 597 (address64->address),
579 length)); 598 length));
580 } 599 }
581 } 600 }
582 } 601 }
@@ -621,12 +640,12 @@ static void acpi_tb_setup_fadt_registers(void)
621 (fadt_info_table[i].default_length > 0) && 640 (fadt_info_table[i].default_length > 0) &&
622 (fadt_info_table[i].default_length != 641 (fadt_info_table[i].default_length !=
623 target64->bit_width)) { 642 target64->bit_width)) {
624 ACPI_WARNING((AE_INFO, 643 ACPI_BIOS_WARNING((AE_INFO,
625 "Invalid length for %s: %u, using default %u", 644 "Invalid length for FADT/%s: %u, using default %u",
626 fadt_info_table[i].name, 645 fadt_info_table[i].name,
627 target64->bit_width, 646 target64->bit_width,
628 fadt_info_table[i]. 647 fadt_info_table[i].
629 default_length)); 648 default_length));
630 649
631 /* Incorrect size, set width to the default */ 650 /* Incorrect size, set width to the default */
632 651
@@ -670,7 +689,8 @@ static void acpi_tb_setup_fadt_registers(void)
670 source64->address + 689 source64->address +
671 (fadt_pm_info_table[i]. 690 (fadt_pm_info_table[i].
672 register_num * 691 register_num *
673 pm1_register_byte_width)); 692 pm1_register_byte_width),
693 "PmRegisters");
674 } 694 }
675 } 695 }
676} 696}
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-11 14:12:48 -0400