kernel/arch/i386/acpi.h

   1 #ifndef __ACPI_H__
   2 #define __ACPI_H__
   3
   4 #include "kernel/kernel.h"
   5
   6 /* ACPI root system description pointer */
   7 struct acpi_rsdp {
   8         char    signature[8]; /* must be "RSD PTR " */
   9         u8_t    checksum;
  10         char    oemid[6];
  11         u8_t    revision;
  12         u32_t   rsdt_addr;
  13         u32_t   length;
  14 };
  15
  16 #define ACPI_SDT_SIGNATURE_LEN  4
  17
  18 #define ACPI_SDT_SIGNATURE(name)        #name
  19
  20 /* header common to all system description tables */
  21 struct acpi_sdt_header {
  22         char    signature[ACPI_SDT_SIGNATURE_LEN];
  23         u32_t   length;
  24         u8_t    revision;
  25         u8_t    checksum;
  26         char    oemid[6];
  27         char    oem_table_id[8];
  28         u32_t   oem_revision;
  29         u32_t   creator_id;
  30         u32_t   creator_revision;
  31 };
  32
  33 struct acpi_madt_hdr {
  34         struct acpi_sdt_header  hdr;
  35         u32_t                   local_apic_address;
  36         u32_t                   flags;
  37 };
  38
  39 #define ACPI_MADT_TYPE_LAPIC            0
  40 #define ACPI_MADT_TYPE_IOAPIC           1
  41 #define ACPI_MADT_TYPE_INT_SRC          2
  42 #define ACPI_MADT_TYPE_NMI_SRC          3
  43 #define ACPI_MADT_TYPE_LAPIC_NMI        4
  44 #define ACPI_MADT_TYPE_LAPIC_ADRESS     5
  45 #define ACPI_MADT_TYPE_IOSAPIC          6
  46 #define ACPI_MADT_TYPE_LSAPIC           7
  47 #define ACPI_MADT_TYPE_PLATFORM_INT_SRC 8
  48 #define ACPI_MADT_TYPE_Lx2APIC          9
  49 #define ACPI_MADT_TYPE_Lx2APIC_NMI      10
  50
  51 struct acpi_madt_item_hdr{
  52         u8_t    type;
  53         u8_t    length;
  54 };
  55
  56 struct acpi_madt_lapic {
  57         struct acpi_madt_item_hdr hdr;
  58         u8_t    acpi_cpu_id;
  59         u8_t    apic_id;
  60         u32_t   flags;
  61 };
  62
  63 struct acpi_madt_ioapic {
  64         struct acpi_madt_item_hdr hdr;
  65         u8_t    id;
  66         u8_t    __reserved;
  67         u32_t   address;
  68         u32_t   global_int_base;
  69 };
  70
  71 struct acpi_madt_int_src {
  72         struct acpi_madt_item_hdr hdr;
  73         u8_t    bus;
  74         u8_t    bus_int;
  75         u32_t   global_int;
  76         u16_t   mps_flags;
  77 };
  78
  79 struct acpi_madt_nmi {
  80         struct acpi_madt_item_hdr hdr;
  81         u16_t   flags;
  82         u32_t   global_int;
  83 };
  84
  85 void acpi_init(void);
  86
  87 /*
  88  * Returns a pointer to the io acpi structure in the MADT table in ACPI. The
  89  * pointer is valid only until paging is turned off. No memory is allocated in
  90  * this function thus no memory needs to be freed
  91  */
  92 struct acpi_madt_ioapic * acpi_get_ioapic_next(void);
  93 /* same as above for local APICs */
  94 struct acpi_madt_lapic * acpi_get_lapic_next(void);
  95
  96 #endif /* __ACPI_H__ */