drivers/acpi/resource.c

   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 <[email protected]>
   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))
  23 static 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  */
  35 static inline bool
  36 acpi_iospace_resource_valid(struct resource *res) { return true; }
  37 #endif
  38
  39 #if IS_ENABLED(CONFIG_ACPI_GENERIC_GSI)
  40 static 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
  46 static inline bool is_gsi(struct acpi_resource_extended_irq *ext_irq)
  47 {
  48         return true;
  49 }
  50 #endif
  51
  52 static 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
  72 static 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
  84 static 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  */
 106 bool 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 }
 138 EXPORT_SYMBOL_GPL(acpi_dev_resource_memory);
 139
 140 static 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
 157 static 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  */
 179 bool 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 }
 204 EXPORT_SYMBOL_GPL(acpi_dev_resource_io);
 205
 206 static 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  */
 289 bool 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 }
 301 EXPORT_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  */
 318 bool 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 }
 332 EXPORT_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  */
 341 unsigned 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 }
 360 EXPORT_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  */
 367 unsigned 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 }
 386 EXPORT_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  */
 393 static 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  */
 542 static 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
 661 struct 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
 670 static 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
 675 static 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
 716 static 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  */
 783 bool 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 }
 826 EXPORT_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  */
 832 void acpi_dev_free_resource_list(struct list_head *list)
 833 {
 834         resource_list_free(list);
 835 }
 836 EXPORT_SYMBOL_GPL(acpi_dev_free_resource_list);
 837
 838 struct 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
 846 static 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
 863 static 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
 902 static 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  */
 955 int 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 }
 962 EXPORT_SYMBOL_GPL(acpi_dev_get_resources);
 963
 964 static 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  */
 995 int 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 }
1000 EXPORT_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  */
1013 int 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 }
1017 EXPORT_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  */
1028 int 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 }
1072 EXPORT_SYMBOL_GPL(acpi_dev_filter_resource_type);
1073
1074 static 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
1097 static 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  */
1123 struct 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 }