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 157