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_generic_address {
  34         u8_t address_space_id;
  35         u8_t register_bit_width;
  36         u8_t register_bit_offset;
  37         u8_t access_size;
  38         u64_t address;
  39 };
  40
  41 struct acpi_fadt_header
  42 {
  43         struct acpi_sdt_header hdr;
  44         u32_t facs;
  45         u32_t dsdt;
  46         u8_t model;
  47         u8_t preferred_pm_profile;
  48         u16_t sci_int;
  49         u32_t smi_cmd;
  50         u8_t acpi_enable;
  51         u8_t acpi_disable;
  52         u8_t s4bios_req;
  53         u8_t pstate_cnt;
  54         u32_t pm1a_evt_blk;
  55         u32_t pm1b_evt_blk;
  56         u32_t pm1a_cnt_blk;
  57         u32_t pm1b_cnt_blk;
  58         u32_t pm2_cnt_blk;
  59         u32_t pm_tmr_blk;
  60         u32_t gpe0_blk;
  61         u32_t gpe1_blk;
  62         u8_t pm1_evt_len;
  63         u8_t pm1_cnt_len;
  64         u8_t pm2_cnt_len;
  65         u8_t pm_tmr_len;
  66         u8_t gpe0_blk_len;
  67         u8_t gpe1_blk_len;
  68         u8_t gpe1_base;
  69         u8_t cst_cnt;
  70         u16_t p_lvl2_lat;
  71         u16_t p_lvl3_lat;
  72         u16_t flush_size;
  73         u16_t flush_stride;
  74         u8_t duty_offset;
  75         u8_t duty_width;
  76         u8_t day_alrm;
  77         u8_t mon_alrm;
  78         u8_t century;
  79         u16_t iapc_boot_arch;
  80         u8_t reserved1;
  81         u32_t flags;
  82         struct acpi_generic_address reset_reg;
  83         u8_t reset_value;
  84         u8_t reserved2[3];
  85         u64_t xfacs;
  86         u64_t xdsdt;
  87         struct acpi_generic_address xpm1a_evt_blk;
  88         struct acpi_generic_address xpm1b_evt_blk;
  89         struct acpi_generic_address xpm1a_cnt_blk;
  90         struct acpi_generic_address xpm1b_cnt_blk;
  91         struct acpi_generic_address xpm2_cnt_blk;
  92         struct acpi_generic_address xpm_tmr_blk;
  93         struct acpi_generic_address xgpe0_blk;
  94         struct acpi_generic_address xgpe1_blk;
  95 };
  96
  97 struct acpi_madt_hdr {
  98         struct acpi_sdt_header  hdr;
  99         u32_t                   local_apic_address;
 100         u32_t                   flags;
 101 };
 102
 103 #define ACPI_MADT_TYPE_LAPIC            0
 104 #define ACPI_MADT_TYPE_IOAPIC           1
 105 #define ACPI_MADT_TYPE_INT_SRC          2
 106 #define ACPI_MADT_TYPE_NMI_SRC          3
 107 #define ACPI_MADT_TYPE_LAPIC_NMI        4
 108 #define ACPI_MADT_TYPE_LAPIC_ADRESS     5
 109 #define ACPI_MADT_TYPE_IOSAPIC          6
 110 #define ACPI_MADT_TYPE_LSAPIC           7
 111 #define ACPI_MADT_TYPE_PLATFORM_INT_SRC 8
 112 #define ACPI_MADT_TYPE_Lx2APIC          9
 113 #define ACPI_MADT_TYPE_Lx2APIC_NMI      10
 114
 115 struct acpi_madt_item_hdr{
 116         u8_t    type;
 117         u8_t    length;
 118 };
 119
 120 struct acpi_madt_lapic {
 121         struct acpi_madt_item_hdr hdr;
 122         u8_t    acpi_cpu_id;
 123         u8_t    apic_id;
 124         u32_t   flags;
 125 };
 126
 127 struct acpi_madt_ioapic {
 128         struct acpi_madt_item_hdr hdr;
 129         u8_t    id;
 130         u8_t    __reserved;
 131         u32_t   address;
 132         u32_t   global_int_base;
 133 };
 134
 135 struct acpi_madt_int_src {
 136         struct acpi_madt_item_hdr hdr;
 137         u8_t    bus;
 138         u8_t    bus_int;
 139         u32_t   global_int;
 140         u16_t   mps_flags;
 141 };
 142
 143 struct acpi_madt_nmi {
 144         struct acpi_madt_item_hdr hdr;
 145         u16_t   flags;
 146         u32_t   global_int;
 147 };
 148
 149 void acpi_init(void);
 150
 151 void acpi_poweroff(void);
 152
 153 /*
 154  * Returns a pointer to the io acpi structure in the MADT table in ACPI. The
 155  * pointer is valid only until paging is turned off. No memory is allocated in
 156  * this function thus no memory needs to be freed
 157  */
 158 struct acpi_madt_ioapic * acpi_get_ioapic_next(void);
 159 /* same as above for local APICs */
 160 struct acpi_madt_lapic * acpi_get_lapic_next(void);
 161
 162 #endif /* __ACPI_H__ */