include/linux/acpi.h

   1 /*
   2  * acpi.h - ACPI Interface
   3  *
   4  * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
   5  *
   6  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  23  */
  24
  25 #ifndef _LINUX_ACPI_H
  26 #define _LINUX_ACPI_H
  27
  28 #include <linux/config.h>
  29
  30 #ifdef  CONFIG_ACPI
  31
  32 #ifndef _LINUX
  33 #define _LINUX
  34 #endif
  35
  36 #include <linux/list.h>
  37
  38 #include <acpi/acpi.h>
  39 #include <acpi/acpi_bus.h>
  40 #include <acpi/acpi_drivers.h>
  41 #include <asm/acpi.h>
  42
  43
  44 #ifdef CONFIG_ACPI
  45
  46 enum acpi_irq_model_id {
  47         ACPI_IRQ_MODEL_PIC = 0,
  48         ACPI_IRQ_MODEL_IOAPIC,
  49         ACPI_IRQ_MODEL_IOSAPIC,
  50         ACPI_IRQ_MODEL_COUNT
  51 };
  52
  53 extern enum acpi_irq_model_id   acpi_irq_model;
  54
  55
  56 /* Root System Description Pointer (RSDP) */
  57
  58 struct acpi_table_rsdp {
  59         char                    signature[8];
  60         u8                      checksum;
  61         char                    oem_id[6];
  62         u8                      revision;
  63         u32                     rsdt_address;
  64 } __attribute__ ((packed));
  65
  66 struct acpi20_table_rsdp {
  67         char                    signature[8];
  68         u8                      checksum;
  69         char                    oem_id[6];
  70         u8                      revision;
  71         u32                     rsdt_address;
  72         u32                     length;
  73         u64                     xsdt_address;
  74         u8                      ext_checksum;
  75         u8                      reserved[3];
  76 } __attribute__ ((packed));
  77
  78 typedef struct {
  79         u8                      type;
  80         u8                      length;
  81 } __attribute__ ((packed)) acpi_table_entry_header;
  82
  83 /* Root System Description Table (RSDT) */
  84
  85 struct acpi_table_rsdt {
  86         struct acpi_table_header header;
  87         u32                     entry[8];
  88 } __attribute__ ((packed));
  89
  90 /* Extended System Description Table (XSDT) */
  91
  92 struct acpi_table_xsdt {
  93         struct acpi_table_header header;
  94         u64                     entry[1];
  95 } __attribute__ ((packed));
  96
  97 /* Fixed ACPI Description Table (FADT) */
  98
  99 struct acpi_table_fadt {
 100         struct acpi_table_header header;
 101         u32 facs_addr;
 102         u32 dsdt_addr;
 103         /* ... */
 104 } __attribute__ ((packed));
 105
 106 /* Multiple APIC Description Table (MADT) */
 107
 108 struct acpi_table_madt {
 109         struct acpi_table_header header;
 110         u32                     lapic_address;
 111         struct {
 112                 u32                     pcat_compat:1;
 113                 u32                     reserved:31;
 114         }                       flags;
 115 } __attribute__ ((packed));
 116
 117 enum acpi_madt_entry_id {
 118         ACPI_MADT_LAPIC = 0,
 119         ACPI_MADT_IOAPIC,
 120         ACPI_MADT_INT_SRC_OVR,
 121         ACPI_MADT_NMI_SRC,
 122         ACPI_MADT_LAPIC_NMI,
 123         ACPI_MADT_LAPIC_ADDR_OVR,
 124         ACPI_MADT_IOSAPIC,
 125         ACPI_MADT_LSAPIC,
 126         ACPI_MADT_PLAT_INT_SRC,
 127         ACPI_MADT_ENTRY_COUNT
 128 };
 129
 130 typedef struct {
 131         u16                     polarity:2;
 132         u16                     trigger:2;
 133         u16                     reserved:12;
 134 } __attribute__ ((packed)) acpi_interrupt_flags;
 135
 136 struct acpi_table_lapic {
 137         acpi_table_entry_header header;
 138         u8                      acpi_id;
 139         u8                      id;
 140         struct {
 141                 u32                     enabled:1;
 142                 u32                     reserved:31;
 143         }                       flags;
 144 } __attribute__ ((packed));
 145
 146 struct acpi_table_ioapic {
 147         acpi_table_entry_header header;
 148         u8                      id;
 149         u8                      reserved;
 150         u32                     address;
 151         u32                     global_irq_base;
 152 } __attribute__ ((packed));
 153
 154 struct acpi_table_int_src_ovr {
 155         acpi_table_entry_header header;
 156         u8                      bus;
 157         u8                      bus_irq;
 158         u32                     global_irq;
 159         acpi_interrupt_flags    flags;
 160 } __attribute__ ((packed));
 161
 162 struct acpi_table_nmi_src {
 163         acpi_table_entry_header header;
 164         acpi_interrupt_flags    flags;
 165         u32                     global_irq;
 166 } __attribute__ ((packed));
 167
 168 struct acpi_table_lapic_nmi {
 169         acpi_table_entry_header header;
 170         u8                      acpi_id;
 171         acpi_interrupt_flags    flags;
 172         u8                      lint;
 173 } __attribute__ ((packed));
 174
 175 struct acpi_table_lapic_addr_ovr {
 176         acpi_table_entry_header header;
 177         u8                      reserved[2];
 178         u64                     address;
 179 } __attribute__ ((packed));
 180
 181 struct acpi_table_iosapic {
 182         acpi_table_entry_header header;
 183         u8                      id;
 184         u8                      reserved;
 185         u32                     global_irq_base;
 186         u64                     address;
 187 } __attribute__ ((packed));
 188
 189 struct acpi_table_lsapic {
 190         acpi_table_entry_header header;
 191         u8                      acpi_id;
 192         u8                      id;
 193         u8                      eid;
 194         u8                      reserved[3];
 195         struct {
 196                 u32                     enabled:1;
 197                 u32                     reserved:31;
 198         }                       flags;
 199 } __attribute__ ((packed));
 200
 201 struct acpi_table_plat_int_src {
 202         acpi_table_entry_header header;
 203         acpi_interrupt_flags    flags;
 204         u8                      type;   /* See acpi_interrupt_type */
 205         u8                      id;
 206         u8                      eid;
 207         u8                      iosapic_vector;
 208         u32                     global_irq;
 209         struct {
 210                 u32                     cpei_override_flag:1;
 211                 u32                     reserved:31;
 212         }                       plint_flags;
 213 } __attribute__ ((packed));
 214
 215 enum acpi_interrupt_id {
 216         ACPI_INTERRUPT_PMI      = 1,
 217         ACPI_INTERRUPT_INIT,
 218         ACPI_INTERRUPT_CPEI,
 219         ACPI_INTERRUPT_COUNT
 220 };
 221
 222 #define ACPI_SPACE_MEM          0
 223
 224 struct acpi_gen_regaddr {
 225         u8  space_id;
 226         u8  bit_width;
 227         u8  bit_offset;
 228         u8  resv;
 229         u32 addrl;
 230         u32 addrh;
 231 } __attribute__ ((packed));
 232
 233 struct acpi_table_hpet {
 234         struct acpi_table_header header;
 235         u32 id;
 236         struct acpi_gen_regaddr addr;
 237         u8 number;
 238         u16 min_tick;
 239         u8 page_protect;
 240 } __attribute__ ((packed));
 241
 242 /*
 243  * Simple Boot Flags
 244  * http://www.microsoft.com/whdc/hwdev/resources/specs/simp_bios.mspx
 245  */
 246 struct acpi_table_sbf
 247 {
 248         u8 sbf_signature[4];
 249         u32 sbf_len;
 250         u8 sbf_revision;
 251         u8 sbf_csum;
 252         u8 sbf_oemid[6];
 253         u8 sbf_oemtable[8];
 254         u8 sbf_revdata[4];
 255         u8 sbf_creator[4];
 256         u8 sbf_crearev[4];
 257         u8 sbf_cmos;
 258         u8 sbf_spare[3];
 259 } __attribute__ ((packed));
 260
 261 /*
 262  * System Resource Affinity Table (SRAT)
 263  * http://www.microsoft.com/whdc/hwdev/platform/proc/SRAT.mspx
 264  */
 265
 266 struct acpi_table_srat {
 267         struct acpi_table_header header;
 268         u32                     table_revision;
 269         u64                     reserved;
 270 } __attribute__ ((packed));
 271
 272 enum acpi_srat_entry_id {
 273         ACPI_SRAT_PROCESSOR_AFFINITY = 0,
 274         ACPI_SRAT_MEMORY_AFFINITY,
 275         ACPI_SRAT_ENTRY_COUNT
 276 };
 277
 278 struct acpi_table_processor_affinity {
 279         acpi_table_entry_header header;
 280         u8                      proximity_domain;
 281         u8                      apic_id;
 282         struct {
 283                 u32                     enabled:1;
 284                 u32                     reserved:31;
 285         }                       flags;
 286         u8                      lsapic_eid;
 287         u8                      reserved[7];
 288 } __attribute__ ((packed));
 289
 290 struct acpi_table_memory_affinity {
 291         acpi_table_entry_header header;
 292         u8                      proximity_domain;
 293         u8                      reserved1[5];
 294         u32                     base_addr_lo;
 295         u32                     base_addr_hi;
 296         u32                     length_lo;
 297         u32                     length_hi;
 298         u32                     memory_type;    /* See acpi_address_range_id */
 299         struct {
 300                 u32                     enabled:1;
 301                 u32                     hot_pluggable:1;
 302                 u32                     reserved:30;
 303         }                       flags;
 304         u64                     reserved2;
 305 } __attribute__ ((packed));
 306
 307 enum acpi_address_range_id {
 308         ACPI_ADDRESS_RANGE_MEMORY = 1,
 309         ACPI_ADDRESS_RANGE_RESERVED = 2,
 310         ACPI_ADDRESS_RANGE_ACPI = 3,
 311         ACPI_ADDRESS_RANGE_NVS  = 4,
 312         ACPI_ADDRESS_RANGE_COUNT
 313 };
 314
 315 /*
 316  * System Locality Information Table (SLIT)
 317  *   see http://devresource.hp.com/devresource/docs/techpapers/ia64/slit.pdf
 318  */
 319
 320 struct acpi_table_slit {
 321         struct acpi_table_header header;
 322         u64                     localities;
 323         u8                      entry[1];       /* real size = localities^2 */
 324 } __attribute__ ((packed));
 325
 326 /* Smart Battery Description Table (SBST) */
 327
 328 struct acpi_table_sbst {
 329         struct acpi_table_header header;
 330         u32                     warning;        /* Warn user */
 331         u32                     low;            /* Critical sleep */
 332         u32                     critical;       /* Critical shutdown */
 333 } __attribute__ ((packed));
 334
 335 /* Embedded Controller Boot Resources Table (ECDT) */
 336
 337 struct acpi_table_ecdt {
 338         struct acpi_table_header        header;
 339         struct acpi_generic_address     ec_control;
 340         struct acpi_generic_address     ec_data;
 341         u32                             uid;
 342         u8                              gpe_bit;
 343         char                            ec_id[0];
 344 } __attribute__ ((packed));
 345
 346 /* PCI MMCONFIG */
 347
 348 /* Defined in PCI Firmware Specification 3.0 */
 349 struct acpi_table_mcfg_config {
 350         u32                             base_address;
 351         u32                             base_reserved;
 352         u16                             pci_segment_group_number;
 353         u8                              start_bus_number;
 354         u8                              end_bus_number;
 355         u8                              reserved[4];
 356 } __attribute__ ((packed));
 357 struct acpi_table_mcfg {
 358         struct acpi_table_header        header;
 359         u8                              reserved[8];
 360         struct acpi_table_mcfg_config   config[0];
 361 } __attribute__ ((packed));
 362
 363 /* Table Handlers */
 364
 365 enum acpi_table_id {
 366         ACPI_TABLE_UNKNOWN = 0,
 367         ACPI_APIC,
 368         ACPI_BOOT,
 369         ACPI_DBGP,
 370         ACPI_DSDT,
 371         ACPI_ECDT,
 372         ACPI_ETDT,
 373         ACPI_FADT,
 374         ACPI_FACS,
 375         ACPI_OEMX,
 376         ACPI_PSDT,
 377         ACPI_SBST,
 378         ACPI_SLIT,
 379         ACPI_SPCR,
 380         ACPI_SRAT,
 381         ACPI_SSDT,
 382         ACPI_SPMI,
 383         ACPI_HPET,
 384         ACPI_MCFG,
 385         ACPI_TABLE_COUNT
 386 };
 387
 388 typedef int (*acpi_table_handler) (unsigned long phys_addr, unsigned long size);
 389
 390 extern acpi_table_handler acpi_table_ops[ACPI_TABLE_COUNT];
 391
 392 typedef int (*acpi_madt_entry_handler) (acpi_table_entry_header *header, const unsigned long end);
 393
 394 char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
 395 unsigned long acpi_find_rsdp (void);
 396 int acpi_boot_init (void);
 397 int acpi_boot_table_init (void);
 398 int acpi_numa_init (void);
 399
 400 int acpi_table_init (void);
 401 int acpi_table_parse (enum acpi_table_id id, acpi_table_handler handler);
 402 int acpi_get_table_header_early (enum acpi_table_id id, struct acpi_table_header **header);
 403 int acpi_table_parse_madt (enum acpi_madt_entry_id id, acpi_madt_entry_handler handler, unsigned int max_entries);
 404 int acpi_table_parse_srat (enum acpi_srat_entry_id id, acpi_madt_entry_handler handler, unsigned int max_entries);
 405 int acpi_parse_mcfg (unsigned long phys_addr, unsigned long size);
 406 void acpi_table_print (struct acpi_table_header *header, unsigned long phys_addr);
 407 void acpi_table_print_madt_entry (acpi_table_entry_header *madt);
 408 void acpi_table_print_srat_entry (acpi_table_entry_header *srat);
 409
 410 /* the following four functions are architecture-dependent */
 411 void acpi_numa_slit_init (struct acpi_table_slit *slit);
 412 void acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa);
 413 void acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma);
 414 void acpi_numa_arch_fixup(void);
 415
 416 #ifdef CONFIG_ACPI_HOTPLUG_CPU
 417 /* Arch dependent functions for cpu hotplug support */
 418 int acpi_map_lsapic(acpi_handle handle, int *pcpu);
 419 int acpi_unmap_lsapic(int cpu);
 420 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
 421
 422 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
 423 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
 424
 425 extern int acpi_mp_config;
 426
 427 extern struct acpi_table_mcfg_config *pci_mmcfg_config;
 428 extern int pci_mmcfg_config_num;
 429
 430 extern int sbf_port;
 431 extern unsigned long acpi_video_flags;
 432
 433 #else   /* !CONFIG_ACPI */
 434
 435 #define acpi_mp_config  0
 436
 437 #endif  /* !CONFIG_ACPI */
 438
 439 int acpi_register_gsi (u32 gsi, int triggering, int polarity);
 440 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 441
 442 /*
 443  * This function undoes the effect of one call to acpi_register_gsi().
 444  * If this matches the last registration, any IRQ resources for gsi
 445  * are freed.
 446  */
 447 void acpi_unregister_gsi (u32 gsi);
 448
 449 #ifdef CONFIG_ACPI
 450
 451 struct acpi_prt_entry {
 452         struct list_head        node;
 453         struct acpi_pci_id      id;
 454         u8                      pin;
 455         struct {
 456                 acpi_handle             handle;
 457                 u32                     index;
 458         }                       link;
 459         u32                     irq;
 460 };
 461
 462 struct acpi_prt_list {
 463         int                     count;
 464         struct list_head        entries;
 465 };
 466
 467 struct pci_dev;
 468
 469 int acpi_pci_irq_enable (struct pci_dev *dev);
 470 void acpi_penalize_isa_irq(int irq, int active);
 471
 472 void acpi_pci_irq_disable (struct pci_dev *dev);
 473
 474 struct acpi_pci_driver {
 475         struct acpi_pci_driver *next;
 476         int (*add)(acpi_handle handle);
 477         void (*remove)(acpi_handle handle);
 478 };
 479
 480 int acpi_pci_register_driver(struct acpi_pci_driver *driver);
 481 void acpi_pci_unregister_driver(struct acpi_pci_driver *driver);
 482
 483 #endif /* CONFIG_ACPI */
 484
 485 #ifdef CONFIG_ACPI_EC
 486
 487 extern int ec_read(u8 addr, u8 *val);
 488 extern int ec_write(u8 addr, u8 val);
 489
 490 #endif /*CONFIG_ACPI_EC*/
 491
 492 extern int acpi_blacklisted(void);
 493 extern void acpi_bios_year(char *s);
 494
 495 #define ACPI_CSTATE_LIMIT_DEFINED       /* for driver builds */
 496 #ifdef  CONFIG_ACPI
 497
 498 /*
 499  * Set highest legal C-state
 500  * 0: C0 okay, but not C1
 501  * 1: C1 okay, but not C2
 502  * 2: C2 okay, but not C3 etc.
 503  */
 504
 505 extern unsigned int max_cstate;
 506
 507 static inline unsigned int acpi_get_cstate_limit(void)
 508 {
 509         return max_cstate;
 510 }
 511 static inline void acpi_set_cstate_limit(unsigned int new_limit)
 512 {
 513         max_cstate = new_limit;
 514         return;
 515 }
 516 #else
 517 static inline unsigned int acpi_get_cstate_limit(void) { return 0; }
 518 static inline void acpi_set_cstate_limit(unsigned int new_limit) { return; }
 519 #endif
 520
 521 #ifdef CONFIG_ACPI_NUMA
 522 int acpi_get_pxm(acpi_handle handle);
 523 #else
 524 static inline int acpi_get_pxm(acpi_handle handle)
 525 {
 526         return 0;
 527 }
 528 #endif
 529
 530 extern int pnpacpi_disabled;
 531
 532 #else   /* CONFIG_ACPI */
 533
 534 static inline int acpi_boot_init(void)
 535 {
 536         return 0;
 537 }
 538
 539 static inline int acpi_boot_table_init(void)
 540 {
 541         return 0;
 542 }
 543
 544 #endif  /* CONFIG_ACPI */
 545 #endif  /*_LINUX_ACPI_H*/