1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * drivers/acpi/resource.c - ACPI device resources interpretation. 4 * 5 * Copyright (C) 2012, Intel Corp. 6 * Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 7 * 8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 9 * 10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 11 */ 12 13#include <linux/acpi.h> 14#include <linux/device.h> 15#include <linux/export.h> 16#include <linux/ioport.h> 17#include <linux/slab.h> 18#include <linux/irq.h> 19#include <linux/dmi.h> 20 21#ifdef CONFIG_X86 22#define valid_IRQ(i) (((i) != 0) && ((i) != 2)) 23static inline bool acpi_iospace_resource_valid(struct resource *res) 24{ 25 /* On X86 IO space is limited to the [0 - 64K] IO port range */ 26 return res->end < 0x10003; 27} 28#else 29#define valid_IRQ(i) (true) 30/* 31 * ACPI IO descriptors on arches other than X86 contain MMIO CPU physical 32 * addresses mapping IO space in CPU physical address space, IO space 33 * resources can be placed anywhere in the 64-bit physical address space. 34 */ 35static inline bool 36acpi_iospace_resource_valid(struct resource *res) { return true; } 37#endif 38 39#if IS_ENABLED(CONFIG_ACPI_GENERIC_GSI) 40static inline bool is_gsi(struct acpi_resource_extended_irq *ext_irq) 41{ 42 return ext_irq->resource_source.string_length == 0 && 43 ext_irq->producer_consumer == ACPI_CONSUMER; 44} 45#else 46static inline bool is_gsi(struct acpi_resource_extended_irq *ext_irq) 47{ 48 return true; 49} 50#endif 51 52static bool acpi_dev_resource_len_valid(u64 start, u64 end, u64 len, bool io) 53{ 54 u64 reslen = end - start + 1; 55 56 /* 57 * CHECKME: len might be required to check versus a minimum 58 * length as well. 1 for io is fine, but for memory it does 59 * not make any sense at all. 60 * Note: some BIOSes report incorrect length for ACPI address space 61 * descriptor, so remove check of 'reslen == len' to avoid regression. 62 */ 63 if (len && reslen && start <= end) 64 return true; 65 66 pr_debug("ACPI: invalid or unassigned resource %s [%016llx - %016llx] length [%016llx]\n", 67 io ? "io" : "mem", start, end, len); 68 69 return false; 70} 71 72static void acpi_dev_memresource_flags(struct resource *res, u64 len, 73 u8 write_protect) 74{ 75 res->flags = IORESOURCE_MEM; 76 77 if (!acpi_dev_resource_len_valid(res->start, res->end, len, false)) 78 res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET; 79 80 if (write_protect == ACPI_READ_WRITE_MEMORY) 81 res->flags |= IORESOURCE_MEM_WRITEABLE; 82} 83 84static void acpi_dev_get_memresource(struct resource *res, u64 start, u64 len, 85 u8 write_protect) 86{ 87 res->start = start; 88 res->end = start + len - 1; 89 acpi_dev_memresource_flags(res, len, write_protect); 90} 91 92/** 93 * acpi_dev_resource_memory - Extract ACPI memory resource information. 94 * @ares: Input ACPI resource object. 95 * @res: Output generic resource object. 96 * 97 * Check if the given ACPI resource object represents a memory resource and 98 * if that's the case, use the information in it to populate the generic 99 * resource object pointed to by @res. 100 * 101 * Return: 102 * 1) false with res->flags setting to zero: not the expected resource type 103 * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource 104 * 3) true: valid assigned resource 105 */ 106bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res) 107{ 108 struct acpi_resource_memory24 *memory24; 109 struct acpi_resource_memory32 *memory32; 110 struct acpi_resource_fixed_memory32 *fixed_memory32; 111 112 switch (ares->type) { 113 case ACPI_RESOURCE_TYPE_MEMORY24: 114 memory24 = &ares->data.memory24; 115 acpi_dev_get_memresource(res, memory24->minimum << 8, 116 memory24->address_length << 8, 117 memory24->write_protect); 118 break; 119 case ACPI_RESOURCE_TYPE_MEMORY32: 120 memory32 = &ares->data.memory32; 121 acpi_dev_get_memresource(res, memory32->minimum, 122 memory32->address_length, 123 memory32->write_protect); 124 break; 125 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: 126 fixed_memory32 = &ares->data.fixed_memory32; 127 acpi_dev_get_memresource(res, fixed_memory32->address, 128 fixed_memory32->address_length, 129 fixed_memory32->write_protect); 130 break; 131 default: 132 res->flags = 0; 133 return false; 134 } 135 136 return !(res->flags & IORESOURCE_DISABLED); 137} 138EXPORT_SYMBOL_GPL(acpi_dev_resource_memory); 139 140static void acpi_dev_ioresource_flags(struct resource *res, u64 len, 141 u8 io_decode, u8 translation_type) 142{ 143 res->flags = IORESOURCE_IO; 144 145 if (!acpi_dev_resource_len_valid(res->start, res->end, len, true)) 146 res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET; 147 148 if (!acpi_iospace_resource_valid(res)) 149 res->flags |= IORESOURCE_DISABLED | IORESOURCE_UNSET; 150 151 if (io_decode == ACPI_DECODE_16) 152 res->flags |= IORESOURCE_IO_16BIT_ADDR; 153 if (translation_type == ACPI_SPARSE_TRANSLATION) 154 res->flags |= IORESOURCE_IO_SPARSE; 155} 156 157static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len, 158 u8 io_decode) 159{ 160 res->start = start; 161 res->end = start + len - 1; 162 acpi_dev_ioresource_flags(res, len, io_decode, 0); 163} 164 165/** 166 * acpi_dev_resource_io - Extract ACPI I/O resource information. 167 * @ares: Input ACPI resource object. 168 * @res: Output generic resource object. 169 * 170 * Check if the given ACPI resource object represents an I/O resource and 171 * if that's the case, use the information in it to populate the generic 172 * resource object pointed to by @res. 173 * 174 * Return: 175 * 1) false with res->flags setting to zero: not the expected resource type 176 * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource 177 * 3) true: valid assigned resource 178 */ 179bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res) 180{ 181 struct acpi_resource_io *io; 182 struct acpi_resource_fixed_io *fixed_io; 183 184 switch (ares->type) { 185 case ACPI_RESOURCE_TYPE_IO: 186 io = &ares->data.io; 187 acpi_dev_get_ioresource(res, io->minimum, 188 io->address_length, 189 io->io_decode); 190 break; 191 case ACPI_RESOURCE_TYPE_FIXED_IO: 192 fixed_io = &ares->data.fixed_io; 193 acpi_dev_get_ioresource(res, fixed_io->address, 194 fixed_io->address_length, 195 ACPI_DECODE_10); 196 break; 197 default: 198 res->flags = 0; 199 return false; 200 } 201 202 return !(res->flags & IORESOURCE_DISABLED); 203} 204EXPORT_SYMBOL_GPL(acpi_dev_resource_io); 205 206static bool acpi_decode_space(struct resource_win *win, 207 struct acpi_resource_address *addr, 208 struct acpi_address64_attribute *attr) 209{ 210 u8 iodec = attr->granularity == 0xfff ? ACPI_DECODE_10 : ACPI_DECODE_16; 211 bool wp = addr->info.mem.write_protect; 212 u64 len = attr->address_length; 213 u64 start, end, offset = 0; 214 struct resource *res = &win->res; 215 216 /* 217 * Filter out invalid descriptor according to ACPI Spec 5.0, section 218 * 6.4.3.5 Address Space Resource Descriptors. 219 */ 220 if ((addr->min_address_fixed != addr->max_address_fixed && len) || 221 (addr->min_address_fixed && addr->max_address_fixed && !len)) 222 pr_debug("ACPI: Invalid address space min_addr_fix %d, max_addr_fix %d, len %llx\n", 223 addr->min_address_fixed, addr->max_address_fixed, len); 224 225 /* 226 * For bridges that translate addresses across the bridge, 227 * translation_offset is the offset that must be added to the 228 * address on the secondary side to obtain the address on the 229 * primary side. Non-bridge devices must list 0 for all Address 230 * Translation offset bits. 231 */ 232 if (addr->producer_consumer == ACPI_PRODUCER) 233 offset = attr->translation_offset; 234 else if (attr->translation_offset) 235 pr_debug("ACPI: translation_offset(%lld) is invalid for non-bridge device.\n", 236 attr->translation_offset); 237 start = attr->minimum + offset; 238 end = attr->maximum + offset; 239 240 win->offset = offset; 241 res->start = start; 242 res->end = end; 243 if (sizeof(resource_size_t) < sizeof(u64) && 244 (offset != win->offset || start != res->start || end != res->end)) { 245 pr_warn("acpi resource window ([%#llx-%#llx] ignored, not CPU addressable)\n", 246 attr->minimum, attr->maximum); 247 return false; 248 } 249 250 switch (addr->resource_type) { 251 case ACPI_MEMORY_RANGE: 252 acpi_dev_memresource_flags(res, len, wp); 253 break; 254 case ACPI_IO_RANGE: 255 acpi_dev_ioresource_flags(res, len, iodec, 256 addr->info.io.translation_type); 257 break; 258 case ACPI_BUS_NUMBER_RANGE: 259 res->flags = IORESOURCE_BUS; 260 break; 261 default: 262 return false; 263 } 264 265 if (addr->producer_consumer == ACPI_PRODUCER) 266 res->flags |= IORESOURCE_WINDOW; 267 268 if (addr->info.mem.caching == ACPI_PREFETCHABLE_MEMORY) 269 res->flags |= IORESOURCE_PREFETCH; 270 271 return !(res->flags & IORESOURCE_DISABLED); 272} 273 274/** 275 * acpi_dev_resource_address_space - Extract ACPI address space information. 276 * @ares: Input ACPI resource object. 277 * @win: Output generic resource object. 278 * 279 * Check if the given ACPI resource object represents an address space resource 280 * and if that's the case, use the information in it to populate the generic 281 * resource object pointed to by @win. 282 * 283 * Return: 284 * 1) false with win->res.flags setting to zero: not the expected resource type 285 * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned 286 * resource 287 * 3) true: valid assigned resource 288 */ 289bool acpi_dev_resource_address_space(struct acpi_resource *ares, 290 struct resource_win *win) 291{ 292 struct acpi_resource_address64 addr; 293 294 win->res.flags = 0; 295 if (ACPI_FAILURE(acpi_resource_to_address64(ares, &addr))) 296 return false; 297 298 return acpi_decode_space(win, (struct acpi_resource_address *)&addr, 299 &addr.address); 300} 301EXPORT_SYMBOL_GPL(acpi_dev_resource_address_space); 302 303/** 304 * acpi_dev_resource_ext_address_space - Extract ACPI address space information. 305 * @ares: Input ACPI resource object. 306 * @win: Output generic resource object. 307 * 308 * Check if the given ACPI resource object represents an extended address space 309 * resource and if that's the case, use the information in it to populate the 310 * generic resource object pointed to by @win. 311 * 312 * Return: 313 * 1) false with win->res.flags setting to zero: not the expected resource type 314 * 2) false with IORESOURCE_DISABLED in win->res.flags: valid unassigned 315 * resource 316 * 3) true: valid assigned resource 317 */ 318bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares, 319 struct resource_win *win) 320{ 321 struct acpi_resource_extended_address64 *ext_addr; 322 323 win->res.flags = 0; 324 if (ares->type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64) 325 return false; 326 327 ext_addr = &ares->data.ext_address64; 328 329 return acpi_decode_space(win, (struct acpi_resource_address *)ext_addr, 330 &ext_addr->address); 331} 332EXPORT_SYMBOL_GPL(acpi_dev_resource_ext_address_space); 333 334/** 335 * acpi_dev_irq_flags - Determine IRQ resource flags. 336 * @triggering: Triggering type as provided by ACPI. 337 * @polarity: Interrupt polarity as provided by ACPI. 338 * @shareable: Whether or not the interrupt is shareable. 339 * @wake_capable: Wake capability as provided by ACPI. 340 */ 341unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable, u8 wake_capable) 342{ 343 unsigned long flags; 344 345 if (triggering == ACPI_LEVEL_SENSITIVE) 346 flags = polarity == ACPI_ACTIVE_LOW ? 347 IORESOURCE_IRQ_LOWLEVEL : IORESOURCE_IRQ_HIGHLEVEL; 348 else 349 flags = polarity == ACPI_ACTIVE_LOW ? 350 IORESOURCE_IRQ_LOWEDGE : IORESOURCE_IRQ_HIGHEDGE; 351 352 if (shareable == ACPI_SHARED) 353 flags |= IORESOURCE_IRQ_SHAREABLE; 354 355 if (wake_capable == ACPI_WAKE_CAPABLE) 356 flags |= IORESOURCE_IRQ_WAKECAPABLE; 357 358 return flags | IORESOURCE_IRQ; 359} 360EXPORT_SYMBOL_GPL(acpi_dev_irq_flags); 361 362/** 363 * acpi_dev_get_irq_type - Determine irq type. 364 * @triggering: Triggering type as provided by ACPI. 365 * @polarity: Interrupt polarity as provided by ACPI. 366 */ 367unsigned int acpi_dev_get_irq_type(int triggering, int polarity) 368{ 369 switch (polarity) { 370 case ACPI_ACTIVE_LOW: 371 return triggering == ACPI_EDGE_SENSITIVE ? 372 IRQ_TYPE_EDGE_FALLING : 373 IRQ_TYPE_LEVEL_LOW; 374 case ACPI_ACTIVE_HIGH: 375 return triggering == ACPI_EDGE_SENSITIVE ? 376 IRQ_TYPE_EDGE_RISING : 377 IRQ_TYPE_LEVEL_HIGH; 378 case ACPI_ACTIVE_BOTH: 379 if (triggering == ACPI_EDGE_SENSITIVE) 380 return IRQ_TYPE_EDGE_BOTH; 381 fallthrough; 382 default: 383 return IRQ_TYPE_NONE; 384 } 385} 386EXPORT_SYMBOL_GPL(acpi_dev_get_irq_type); 387 388/* 389 * DMI matches for boards where the DSDT specifies the kbd IRQ as 390 * level active-low and using the override changes this to rising edge, 391 * stopping the keyboard from working. 392 */ 393static const struct dmi_system_id irq1_level_low_skip_override[] = { 394 { 395 /* MEDION P15651 */ 396 .matches = { 397 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), 398 DMI_MATCH(DMI_BOARD_NAME, "M15T"), 399 }, 400 }, 401 { 402 /* MEDION S17405 */ 403 .matches = { 404 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), 405 DMI_MATCH(DMI_BOARD_NAME, "M17T"), 406 }, 407 }, 408 { 409 /* MEDION S17413 */ 410 .matches = { 411 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), 412 DMI_MATCH(DMI_BOARD_NAME, "M1xA"), 413 }, 414 }, 415 { 416 /* Asus Vivobook K3402ZA */ 417 .matches = { 418 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 419 DMI_MATCH(DMI_BOARD_NAME, "K3402ZA"), 420 }, 421 }, 422 { 423 /* Asus Vivobook K3502ZA */ 424 .matches = { 425 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 426 DMI_MATCH(DMI_BOARD_NAME, "K3502ZA"), 427 }, 428 }, 429 { 430 /* Asus Vivobook S5402ZA */ 431 .matches = { 432 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 433 DMI_MATCH(DMI_BOARD_NAME, "S5402ZA"), 434 }, 435 }, 436 { 437 /* Asus Vivobook S5602ZA */ 438 .matches = { 439 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 440 DMI_MATCH(DMI_BOARD_NAME, "S5602ZA"), 441 }, 442 }, 443 { 444 /* Asus ExpertBook B1402CBA */ 445 .matches = { 446 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 447 DMI_MATCH(DMI_BOARD_NAME, "B1402CBA"), 448 }, 449 }, 450 { 451 /* Asus ExpertBook B1402CVA */ 452 .matches = { 453 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 454 DMI_MATCH(DMI_BOARD_NAME, "B1402CVA"), 455 }, 456 }, 457 { 458 /* Asus ExpertBook B1502CBA */ 459 .matches = { 460 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 461 DMI_MATCH(DMI_BOARD_NAME, "B1502CBA"), 462 }, 463 }, 464 { 465 /* Asus ExpertBook B1502CGA */ 466 .matches = { 467 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 468 DMI_MATCH(DMI_BOARD_NAME, "B1502CGA"), 469 }, 470 }, 471 { 472 /* Asus ExpertBook B1502CVA */ 473 .matches = { 474 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 475 DMI_MATCH(DMI_BOARD_NAME, "B1502CVA"), 476 }, 477 }, 478 { 479 /* Asus ExpertBook B2402CBA */ 480 .matches = { 481 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 482 DMI_MATCH(DMI_BOARD_NAME, "B2402CBA"), 483 }, 484 }, 485 { 486 /* Asus ExpertBook B2402FBA */ 487 .matches = { 488 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 489 DMI_MATCH(DMI_BOARD_NAME, "B2402FBA"), 490 }, 491 }, 492 { 493 /* Asus ExpertBook B2502 */ 494 .matches = { 495 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 496 DMI_MATCH(DMI_BOARD_NAME, "B2502CBA"), 497 }, 498 }, 499 { 500 /* Asus ExpertBook B2502FBA */ 501 .matches = { 502 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 503 DMI_MATCH(DMI_BOARD_NAME, "B2502FBA"), 504 }, 505 }, 506 { 507 /* Asus Vivobook E1504GA */ 508 .matches = { 509 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 510 DMI_MATCH(DMI_BOARD_NAME, "E1504GA"), 511 }, 512 }, 513 { 514 /* Asus Vivobook E1504GAB */ 515 .matches = { 516 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 517 DMI_MATCH(DMI_BOARD_NAME, "E1504GAB"), 518 }, 519 }, 520 { 521 /* Asus Vivobook Pro N6506MV */ 522 .matches = { 523 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 524 DMI_MATCH(DMI_BOARD_NAME, "N6506MV"), 525 }, 526 }, 527 { 528 /* LG Electronics 17U70P */ 529 .matches = { 530 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"), 531 DMI_MATCH(DMI_BOARD_NAME, "17U70P"), 532 }, 533 }, 534 { } 535}; 536 537/* 538 * DMI matches for AMD Zen boards where the DSDT specifies the kbd IRQ 539 * as falling edge and this must be overridden to rising edge, 540 * to have a working keyboard. 541 */ 542static const struct dmi_system_id irq1_edge_low_force_override[] = { 543 { 544 /* XMG APEX 17 (M23) */ 545 .matches = { 546 DMI_MATCH(DMI_BOARD_NAME, "GMxBGxx"), 547 }, 548 }, 549 { 550 /* TongFang GMxRGxx/XMG CORE 15 (M22)/TUXEDO Stellaris 15 Gen4 AMD */ 551 .matches = { 552 DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"), 553 }, 554 }, 555 { 556 /* TongFang GMxXGxx/TUXEDO Polaris 15 Gen5 AMD */ 557 .matches = { 558 DMI_MATCH(DMI_BOARD_NAME, "GMxXGxx"), 559 }, 560 }, 561 { 562 /* TongFang GMxXGxx sold as Eluktronics Inc. RP-15 */ 563 .matches = { 564 DMI_MATCH(DMI_SYS_VENDOR, "Eluktronics Inc."), 565 DMI_MATCH(DMI_BOARD_NAME, "RP-15"), 566 }, 567 }, 568 { 569 /* TongFang GM6XGxX/TUXEDO Stellaris 16 Gen5 AMD */ 570 .matches = { 571 DMI_MATCH(DMI_BOARD_NAME, "GM6XGxX"), 572 }, 573 }, 574 { 575 /* MAINGEAR Vector Pro 2 15 */ 576 .matches = { 577 DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"), 578 DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-15A3070T"), 579 } 580 }, 581 { 582 /* MAINGEAR Vector Pro 2 17 */ 583 .matches = { 584 DMI_MATCH(DMI_SYS_VENDOR, "Micro Electronics Inc"), 585 DMI_MATCH(DMI_PRODUCT_NAME, "MG-VCP2-17A3070T"), 586 }, 587 }, 588 { 589 /* TongFang GM6BGEQ / PCSpecialist Elimina Pro 16 M, RTX 3050 */ 590 .matches = { 591 DMI_MATCH(DMI_BOARD_NAME, "GM6BGEQ"), 592 }, 593 }, 594 { 595 /* TongFang GM6BG5Q, RTX 4050 */ 596 .matches = { 597 DMI_MATCH(DMI_BOARD_NAME, "GM6BG5Q"), 598 }, 599 }, 600 { 601 /* TongFang GM6BG0Q / PCSpecialist Elimina Pro 16 M, RTX 4060 */ 602 .matches = { 603 DMI_MATCH(DMI_BOARD_NAME, "GM6BG0Q"), 604 }, 605 }, 606 { 607 /* Infinity E15-5A165-BM */ 608 .matches = { 609 DMI_MATCH(DMI_BOARD_NAME, "GM5RG1E0009COM"), 610 }, 611 }, 612 { 613 /* Infinity E15-5A305-1M */ 614 .matches = { 615 DMI_MATCH(DMI_BOARD_NAME, "GM5RGEE0016COM"), 616 }, 617 }, 618 { 619 /* Lunnen Ground 15 / AMD Ryzen 5 5500U */ 620 .matches = { 621 DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"), 622 DMI_MATCH(DMI_BOARD_NAME, "LLL5DAW"), 623 }, 624 }, 625 { 626 /* Lunnen Ground 16 / AMD Ryzen 7 5800U */ 627 .matches = { 628 DMI_MATCH(DMI_SYS_VENDOR, "Lunnen"), 629 DMI_MATCH(DMI_BOARD_NAME, "LL6FA"), 630 }, 631 }, 632 { 633 /* MAIBENBEN X577 */ 634 .matches = { 635 DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"), 636 DMI_MATCH(DMI_BOARD_NAME, "X577"), 637 }, 638 }, 639 { 640 /* Maibenben X565 */ 641 .matches = { 642 DMI_MATCH(DMI_SYS_VENDOR, "MAIBENBEN"), 643 DMI_MATCH(DMI_BOARD_NAME, "X565"), 644 }, 645 }, 646 { 647 /* TongFang GXxHRXx/TUXEDO InfinityBook Pro Gen9 AMD */ 648 .matches = { 649 DMI_MATCH(DMI_BOARD_NAME, "GXxHRXx"), 650 }, 651 }, 652 { 653 /* TongFang GMxHGxx/TUXEDO Stellaris Slim Gen1 AMD */ 654 .matches = { 655 DMI_MATCH(DMI_BOARD_NAME, "GMxHGxx"), 656 }, 657 }, 658 { } 659}; 660 661struct irq_override_cmp { 662 const struct dmi_system_id *system; 663 unsigned char irq; 664 unsigned char triggering; 665 unsigned char polarity; 666 unsigned char shareable; 667 bool override; 668}; 669 670static const struct irq_override_cmp override_table[] = { 671 { irq1_level_low_skip_override, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0, false }, 672 { irq1_edge_low_force_override, 1, ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_LOW, 1, true }, 673}; 674 675static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity, 676 u8 shareable) 677{ 678 int i; 679 680 for (i = 0; i < ARRAY_SIZE(override_table); i++) { 681 const struct irq_override_cmp *entry = &override_table[i]; 682 683 if (dmi_check_system(entry->system) && 684 entry->irq == gsi && 685 entry->triggering == triggering && 686 entry->polarity == polarity && 687 entry->shareable == shareable) 688 return entry->override; 689 } 690 691#ifdef CONFIG_X86 692 /* 693 * Always use the MADT override info, except for the i8042 PS/2 ctrl 694 * IRQs (1 and 12). For these the DSDT IRQ settings should sometimes 695 * be used otherwise PS/2 keyboards / mice will not work. 696 */ 697 if (gsi != 1 && gsi != 12) 698 return true; 699 700 /* If the override comes from an INT_SRC_OVR MADT entry, honor it. */ 701 if (acpi_int_src_ovr[gsi]) 702 return true; 703 704 /* 705 * IRQ override isn't needed on modern AMD Zen systems and 706 * this override breaks active low IRQs on AMD Ryzen 6000 and 707 * newer systems. Skip it. 708 */ 709 if (boot_cpu_has(X86_FEATURE_ZEN)) 710 return false; 711#endif 712 713 return true; 714} 715 716static void acpi_dev_get_irqresource(struct resource *res, u32 gsi, 717 u8 triggering, u8 polarity, u8 shareable, 718 u8 wake_capable, bool check_override) 719{ 720 int irq, p, t; 721 722 if (!valid_IRQ(gsi)) { 723 irqresource_disabled(res, gsi); 724 return; 725 } 726 727 /* 728 * In IO-APIC mode, use overridden attribute. Two reasons: 729 * 1. BIOS bug in DSDT 730 * 2. BIOS uses IO-APIC mode Interrupt Source Override 731 * 732 * We do this only if we are dealing with IRQ() or IRQNoFlags() 733 * resource (the legacy ISA resources). With modern ACPI 5 devices 734 * using extended IRQ descriptors we take the IRQ configuration 735 * from _CRS directly. 736 */ 737 if (check_override && 738 acpi_dev_irq_override(gsi, triggering, polarity, shareable) && 739 !acpi_get_override_irq(gsi, &t, &p)) { 740 u8 trig = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE; 741 u8 pol = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH; 742 743 if (triggering != trig || polarity != pol) { 744 pr_warn("ACPI: IRQ %d override to %s%s, %s%s\n", gsi, 745 t ? "level" : "edge", 746 trig == triggering ? "" : "(!)", 747 p ? "low" : "high", 748 pol == polarity ? "" : "(!)"); 749 triggering = trig; 750 polarity = pol; 751 } 752 } 753 754 res->flags = acpi_dev_irq_flags(triggering, polarity, shareable, wake_capable); 755 irq = acpi_register_gsi(NULL, gsi, triggering, polarity); 756 if (irq >= 0) { 757 res->start = irq; 758 res->end = irq; 759 } else { 760 irqresource_disabled(res, gsi); 761 } 762} 763 764/** 765 * acpi_dev_resource_interrupt - Extract ACPI interrupt resource information. 766 * @ares: Input ACPI resource object. 767 * @index: Index into the array of GSIs represented by the resource. 768 * @res: Output generic resource object. 769 * 770 * Check if the given ACPI resource object represents an interrupt resource 771 * and @index does not exceed the resource's interrupt count (true is returned 772 * in that case regardless of the results of the other checks)). If that's the 773 * case, register the GSI corresponding to @index from the array of interrupts 774 * represented by the resource and populate the generic resource object pointed 775 * to by @res accordingly. If the registration of the GSI is not successful, 776 * IORESOURCE_DISABLED will be set it that object's flags. 777 * 778 * Return: 779 * 1) false with res->flags setting to zero: not the expected resource type 780 * 2) false with IORESOURCE_DISABLED in res->flags: valid unassigned resource 781 * 3) true: valid assigned resource 782 */ 783bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index, 784 struct resource *res) 785{ 786 struct acpi_resource_irq *irq; 787 struct acpi_resource_extended_irq *ext_irq; 788 789 switch (ares->type) { 790 case ACPI_RESOURCE_TYPE_IRQ: 791 /* 792 * Per spec, only one interrupt per descriptor is allowed in 793 * _CRS, but some firmware violates this, so parse them all. 794 */ 795 irq = &ares->data.irq; 796 if (index >= irq->interrupt_count) { 797 irqresource_disabled(res, 0); 798 return false; 799 } 800 acpi_dev_get_irqresource(res, irq->interrupts[index], 801 irq->triggering, irq->polarity, 802 irq->shareable, irq->wake_capable, 803 true); 804 break; 805 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 806 ext_irq = &ares->data.extended_irq; 807 if (index >= ext_irq->interrupt_count) { 808 irqresource_disabled(res, 0); 809 return false; 810 } 811 if (is_gsi(ext_irq)) 812 acpi_dev_get_irqresource(res, ext_irq->interrupts[index], 813 ext_irq->triggering, ext_irq->polarity, 814 ext_irq->shareable, ext_irq->wake_capable, 815 false); 816 else 817 irqresource_disabled(res, 0); 818 break; 819 default: 820 res->flags = 0; 821 return false; 822 } 823 824 return true; 825} 826EXPORT_SYMBOL_GPL(acpi_dev_resource_interrupt); 827 828/** 829 * acpi_dev_free_resource_list - Free resource from %acpi_dev_get_resources(). 830 * @list: The head of the resource list to free. 831 */ 832void acpi_dev_free_resource_list(struct list_head *list) 833{ 834 resource_list_free(list); 835} 836EXPORT_SYMBOL_GPL(acpi_dev_free_resource_list); 837 838struct res_proc_context { 839 struct list_head *list; 840 int (*preproc)(struct acpi_resource *, void *); 841 void *preproc_data; 842 int count; 843 int error; 844}; 845 846static acpi_status acpi_dev_new_resource_entry(struct resource_win *win, 847 struct res_proc_context *c) 848{ 849 struct resource_entry *rentry; 850 851 rentry = resource_list_create_entry(NULL, 0); 852 if (!rentry) { 853 c->error = -ENOMEM; 854 return AE_NO_MEMORY; 855 } 856 *rentry->res = win->res; 857 rentry->offset = win->offset; 858 resource_list_add_tail(rentry, c->list); 859 c->count++; 860 return AE_OK; 861} 862 863static acpi_status acpi_dev_process_resource(struct acpi_resource *ares, 864 void *context) 865{ 866 struct res_proc_context *c = context; 867 struct resource_win win; 868 struct resource *res = &win.res; 869 int i; 870 871 if (c->preproc) { 872 int ret; 873 874 ret = c->preproc(ares, c->preproc_data); 875 if (ret < 0) { 876 c->error = ret; 877 return AE_ABORT_METHOD; 878 } else if (ret > 0) { 879 return AE_OK; 880 } 881 } 882 883 memset(&win, 0, sizeof(win)); 884 885 if (acpi_dev_resource_memory(ares, res) 886 || acpi_dev_resource_io(ares, res) 887 || acpi_dev_resource_address_space(ares, &win) 888 || acpi_dev_resource_ext_address_space(ares, &win)) 889 return acpi_dev_new_resource_entry(&win, c); 890 891 for (i = 0; acpi_dev_resource_interrupt(ares, i, res); i++) { 892 acpi_status status; 893 894 status = acpi_dev_new_resource_entry(&win, c); 895 if (ACPI_FAILURE(status)) 896 return status; 897 } 898 899 return AE_OK; 900} 901 902static int __acpi_dev_get_resources(struct acpi_device *adev, 903 struct list_head *list, 904 int (*preproc)(struct acpi_resource *, void *), 905 void *preproc_data, char *method) 906{ 907 struct res_proc_context c; 908 acpi_status status; 909 910 if (!adev || !adev->handle || !list_empty(list)) 911 return -EINVAL; 912 913 if (!acpi_has_method(adev->handle, method)) 914 return 0; 915 916 c.list = list; 917 c.preproc = preproc; 918 c.preproc_data = preproc_data; 919 c.count = 0; 920 c.error = 0; 921 status = acpi_walk_resources(adev->handle, method, 922 acpi_dev_process_resource, &c); 923 if (ACPI_FAILURE(status)) { 924 acpi_dev_free_resource_list(list); 925 return c.error ? c.error : -EIO; 926 } 927 928 return c.count; 929} 930 931/** 932 * acpi_dev_get_resources - Get current resources of a device. 933 * @adev: ACPI device node to get the resources for. 934 * @list: Head of the resultant list of resources (must be empty). 935 * @preproc: The caller's preprocessing routine. 936 * @preproc_data: Pointer passed to the caller's preprocessing routine. 937 * 938 * Evaluate the _CRS method for the given device node and process its output by 939 * (1) executing the @preproc() routine provided by the caller, passing the 940 * resource pointer and @preproc_data to it as arguments, for each ACPI resource 941 * returned and (2) converting all of the returned ACPI resources into struct 942 * resource objects if possible. If the return value of @preproc() in step (1) 943 * is different from 0, step (2) is not applied to the given ACPI resource and 944 * if that value is negative, the whole processing is aborted and that value is 945 * returned as the final error code. 946 * 947 * The resultant struct resource objects are put on the list pointed to by 948 * @list, that must be empty initially, as members of struct resource_entry 949 * objects. Callers of this routine should use %acpi_dev_free_resource_list() to 950 * free that list. 951 * 952 * The number of resources in the output list is returned on success, an error 953 * code reflecting the error condition is returned otherwise. 954 */ 955int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list, 956 int (*preproc)(struct acpi_resource *, void *), 957 void *preproc_data) 958{ 959 return __acpi_dev_get_resources(adev, list, preproc, preproc_data, 960 METHOD_NAME__CRS); 961} 962EXPORT_SYMBOL_GPL(acpi_dev_get_resources); 963 964static int is_memory(struct acpi_resource *ares, void *not_used) 965{ 966 struct resource_win win; 967 struct resource *res = &win.res; 968 969 memset(&win, 0, sizeof(win)); 970 971 if (acpi_dev_filter_resource_type(ares, IORESOURCE_MEM)) 972 return 1; 973 974 return !(acpi_dev_resource_memory(ares, res) 975 || acpi_dev_resource_address_space(ares, &win) 976 || acpi_dev_resource_ext_address_space(ares, &win)); 977} 978 979/** 980 * acpi_dev_get_dma_resources - Get current DMA resources of a device. 981 * @adev: ACPI device node to get the resources for. 982 * @list: Head of the resultant list of resources (must be empty). 983 * 984 * Evaluate the _DMA method for the given device node and process its 985 * output. 986 * 987 * The resultant struct resource objects are put on the list pointed to 988 * by @list, that must be empty initially, as members of struct 989 * resource_entry objects. Callers of this routine should use 990 * %acpi_dev_free_resource_list() to free that list. 991 * 992 * The number of resources in the output list is returned on success, 993 * an error code reflecting the error condition is returned otherwise. 994 */ 995int acpi_dev_get_dma_resources(struct acpi_device *adev, struct list_head *list) 996{ 997 return __acpi_dev_get_resources(adev, list, is_memory, NULL, 998 METHOD_NAME__DMA); 999} 1000EXPORT_SYMBOL_GPL(acpi_dev_get_dma_resources); 1001 1002/** 1003 * acpi_dev_get_memory_resources - Get current memory resources of a device. 1004 * @adev: ACPI device node to get the resources for. 1005 * @list: Head of the resultant list of resources (must be empty). 1006 * 1007 * This is a helper function that locates all memory type resources of @adev 1008 * with acpi_dev_get_resources(). 1009 * 1010 * The number of resources in the output list is returned on success, an error 1011 * code reflecting the error condition is returned otherwise. 1012 */ 1013int acpi_dev_get_memory_resources(struct acpi_device *adev, struct list_head *list) 1014{ 1015 return acpi_dev_get_resources(adev, list, is_memory, NULL); 1016} 1017EXPORT_SYMBOL_GPL(acpi_dev_get_memory_resources); 1018 1019/** 1020 * acpi_dev_filter_resource_type - Filter ACPI resource according to resource 1021 * types 1022 * @ares: Input ACPI resource object. 1023 * @types: Valid resource types of IORESOURCE_XXX 1024 * 1025 * This is a helper function to support acpi_dev_get_resources(), which filters 1026 * ACPI resource objects according to resource types. 1027 */ 1028int acpi_dev_filter_resource_type(struct acpi_resource *ares, 1029 unsigned long types) 1030{ 1031 unsigned long type = 0; 1032 1033 switch (ares->type) { 1034 case ACPI_RESOURCE_TYPE_MEMORY24: 1035 case ACPI_RESOURCE_TYPE_MEMORY32: 1036 case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: 1037 type = IORESOURCE_MEM; 1038 break; 1039 case ACPI_RESOURCE_TYPE_IO: 1040 case ACPI_RESOURCE_TYPE_FIXED_IO: 1041 type = IORESOURCE_IO; 1042 break; 1043 case ACPI_RESOURCE_TYPE_IRQ: 1044 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 1045 type = IORESOURCE_IRQ; 1046 break; 1047 case ACPI_RESOURCE_TYPE_DMA: 1048 case ACPI_RESOURCE_TYPE_FIXED_DMA: 1049 type = IORESOURCE_DMA; 1050 break; 1051 case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: 1052 type = IORESOURCE_REG; 1053 break; 1054 case ACPI_RESOURCE_TYPE_ADDRESS16: 1055 case ACPI_RESOURCE_TYPE_ADDRESS32: 1056 case ACPI_RESOURCE_TYPE_ADDRESS64: 1057 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: 1058 if (ares->data.address.resource_type == ACPI_MEMORY_RANGE) 1059 type = IORESOURCE_MEM; 1060 else if (ares->data.address.resource_type == ACPI_IO_RANGE) 1061 type = IORESOURCE_IO; 1062 else if (ares->data.address.resource_type == 1063 ACPI_BUS_NUMBER_RANGE) 1064 type = IORESOURCE_BUS; 1065 break; 1066 default: 1067 break; 1068 } 1069 1070 return (type & types) ? 0 : 1; 1071} 1072EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type); 1073 1074static int acpi_dev_consumes_res(struct acpi_device *adev, struct resource *res) 1075{ 1076 struct list_head resource_list; 1077 struct resource_entry *rentry; 1078 int ret, found = 0; 1079 1080 INIT_LIST_HEAD(&resource_list); 1081 ret = acpi_dev_get_resources(adev, &resource_list, NULL, NULL); 1082 if (ret < 0) 1083 return 0; 1084 1085 list_for_each_entry(rentry, &resource_list, node) { 1086 if (resource_contains(rentry->res, res)) { 1087 found = 1; 1088 break; 1089 } 1090 1091 } 1092 1093 acpi_dev_free_resource_list(&resource_list); 1094 return found; 1095} 1096 1097static acpi_status acpi_res_consumer_cb(acpi_handle handle, u32 depth, 1098 void *context, void **ret) 1099{ 1100 struct resource *res = context; 1101 struct acpi_device **consumer = (struct acpi_device **) ret; 1102 struct acpi_device *adev = acpi_fetch_acpi_dev(handle); 1103 1104 if (!adev) 1105 return AE_OK; 1106 1107 if (acpi_dev_consumes_res(adev, res)) { 1108 *consumer = adev; 1109 return AE_CTRL_TERMINATE; 1110 } 1111 1112 return AE_OK; 1113} 1114 1115/** 1116 * acpi_resource_consumer - Find the ACPI device that consumes @res. 1117 * @res: Resource to search for. 1118 * 1119 * Search the current resource settings (_CRS) of every ACPI device node 1120 * for @res. If we find an ACPI device whose _CRS includes @res, return 1121 * it. Otherwise, return NULL. 1122 */ 1123struct acpi_device *acpi_resource_consumer(struct resource *res) 1124{ 1125 struct acpi_device *consumer = NULL; 1126 1127 acpi_get_devices(NULL, acpi_res_consumer_cb, res, (void **) &consumer); 1128 return consumer; 1129} 1130