com32/gplinclude/acpi/madt.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2009-2011 Erwan Velu - All Rights Reserved
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
   8  *   Boston MA 02111-1307, USA; either version 2 of the License, or
   9  *   (at your option) any later version; incorporated herein by reference.
  10  *
  11  * ----------------------------------------------------------------------- */
  12
  13 #ifndef MADT_H
  14 #define MADT_H
  15 #include <inttypes.h>
  16 #include <stdbool.h>
  17
  18 #define MADT "MADT"
  19 #define APIC "APIC"
  20
  21 enum {
  22     PROCESSOR_LOCAL_APIC = 0,
  23     IO_APIC = 1,
  24     INTERRUPT_SOURCE_OVERRIDE = 2,
  25     NMI = 3,
  26     LOCAL_APIC_NMI_STRUCTURE = 4,
  27     LOCAL_APIC_ADDRESS_OVERRIDE_STRUCTURE = 5,
  28     IO_SAPIC = 6,
  29     LOCAL_SAPIC = 7,
  30     PLATEFORM_INTERRUPT_SOURCES = 8
  31 };
  32
  33 /* Features flags for
  34  * - processor_local_apic flags
  35  * - local sapic flags
  36  */
  37 #define PROCESSOR_LOCAL_APIC_ENABLE 1
  38
  39 #define MAX_S_L_P 255
  40 typedef struct {
  41     uint8_t type;
  42     uint8_t length;
  43     uint8_t acpi_id;
  44     uint8_t apic_id;
  45     uint32_t flags;
  46 } __attribute__ ((packed)) s_processor_local_apic;
  47
  48 #define MAX_IO_APIC 255
  49 typedef struct {
  50     uint8_t type;
  51     uint8_t length;
  52     uint8_t io_apic_id;
  53     uint8_t reserved;
  54     uint32_t io_apic_address;
  55     uint32_t global_system_interrupt_base;
  56 } __attribute__ ((packed)) s_io_apic;
  57
  58 /* Features flags for
  59  * - interrupt_source_override
  60  * - nmi
  61  */
  62 /* Bits 1&2 must be set to 0 */
  63 #define POLARITY_CONFORM_MASK 0x0
  64 #define POLARITY_ACTIVE_HIGH 0x1
  65 #define POLARITY_RESERVED 0x2
  66 #define POLARITY_ACTIVE_LOW 0x3
  67 /* Bits 3&4 must be set to 0 */
  68 #define TRIGGER_CONFORM_MASK 0x3
  69 #define TRIGGER_EDGE 0x4
  70 #define TRIGGER_RESERVED 0x8
  71 #define TRIGGER_LEVEL 0xA
  72
  73 #define MAX_I_S_O 255
  74 typedef struct {
  75     uint8_t type;
  76     uint8_t length;
  77     uint8_t bus;
  78     uint8_t source;
  79     uint32_t global_system_interrupt;
  80     uint16_t flags;
  81 } __attribute__ ((packed)) s_interrupt_source_override;
  82
  83 typedef struct {
  84     uint8_t type;
  85     uint8_t length;
  86     uint8_t flags;
  87     uint32_t global_system_interrupt;
  88 } __attribute__ ((packed)) s_nmi;
  89
  90 #define MAX_LOCAL_APIC_NMI 255
  91 typedef struct {
  92     uint8_t type;
  93     uint8_t length;
  94     uint8_t acpi_processor_id;
  95     uint16_t flags;
  96     uint8_t local_apic_lint;
  97 } __attribute__ ((packed)) s_local_apic_nmi;
  98
  99 #define MAX_L_A_A_O 255
 100 typedef struct {
 101     uint8_t type;
 102     uint8_t length;
 103     uint16_t reserved;
 104     uint64_t local_apic_address;
 105 } __attribute__ ((packed)) s_local_apic_address_override;
 106
 107 #define MAX_IO_SAPIC 255
 108 typedef struct {
 109     uint8_t type;
 110     uint8_t length;
 111     uint8_t io_apic_id;
 112     uint8_t reserved;
 113     uint32_t global_system_interrupt_base;
 114     uint64_t io_sapic_address;
 115 } __attribute__ ((packed)) s_io_sapic;
 116
 117 #define ACPI_PROCESSOR_UID_STRING_OFFSET 16
 118 #define MAX_LOCAL_SAPIC 255
 119 typedef struct {
 120     uint8_t type;
 121     uint8_t length;
 122     uint8_t acpi_processor_id;
 123     uint8_t local_sapic_id;
 124     uint8_t local_sapic_eid;
 125     uint8_t reserved[3];
 126     uint32_t flags;
 127     uint32_t acpi_processor_uid_value;
 128     char *acpi_processor_uid_string;
 129 } __attribute__ ((packed)) s_local_sapic;
 130
 131 typedef struct {
 132     uint64_t *address;
 133     s_acpi_description_header header;
 134     uint32_t local_apic_address;
 135     uint32_t flags;
 136     s_processor_local_apic processor_local_apic[MAX_S_L_P];
 137     uint8_t processor_local_apic_count;
 138     s_io_apic io_apic[MAX_IO_APIC];
 139     uint8_t io_apic_count;
 140     s_interrupt_source_override interrupt_source_override[MAX_I_S_O];
 141     uint8_t interrupt_source_override_count;
 142     s_nmi nmi[MAX_I_S_O];
 143     uint8_t nmi_count;
 144     s_local_apic_nmi local_apic_nmi[MAX_LOCAL_APIC_NMI];
 145     uint8_t local_apic_nmi_count;
 146     s_local_apic_address_override local_apic_address_override[MAX_L_A_A_O];
 147     uint8_t local_apic_address_override_count;
 148     s_io_sapic io_sapic[MAX_IO_SAPIC];
 149     uint8_t io_sapic_count;
 150     s_local_sapic local_sapic[MAX_LOCAL_SAPIC];
 151     uint8_t local_sapic_count;
 152     bool valid;
 153 } s_madt;
 154
 155 void print_madt(s_madt * madt);
 156 #endif