| 1 | /* ----------------------------------------------------------------------- * |
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| 2 | * |
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| 3 | * Copyright 2009-2011 Erwan Velu - All Rights Reserved |
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| 4 | * |
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| 5 | * Permission is hereby granted, free of charge, to any person |
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| 6 | * obtaining a copy of this software and associated documentation |
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| 7 | * files (the "Software"), to deal in the Software without |
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| 8 | * restriction, including without limitation the rights to use, |
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| 9 | * copy, modify, merge, publish, distribute, sublicense, and/or |
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| 10 | * sell copies of the Software, and to permit persons to whom |
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| 11 | * the Software is furnished to do so, subject to the following |
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| 12 | * conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice shall |
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| 15 | * be included in all copies or substantial portions of the Software. |
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| 16 | * |
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| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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| 18 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES |
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| 19 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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| 20 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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| 21 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
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| 22 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 23 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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| 24 | * OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | * |
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| 26 | * ----------------------------------------------------------------------- |
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| 27 | */ |
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| 28 | |
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| 29 | #include <stdio.h> |
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| 30 | #include <string.h> |
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| 31 | #include <memory.h> |
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| 32 | #include <dprintf.h> |
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| 33 | #include <stdlib.h> |
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| 34 | #include "acpi/acpi.h" |
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| 35 | |
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| 36 | /* Parse the apic structures */ |
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| 37 | static uint8_t *add_apic_structure(s_acpi * acpi, uint8_t * q) |
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| 38 | { |
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| 39 | uint8_t type = *q; |
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| 40 | q++; |
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| 41 | uint8_t length = *q; |
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| 42 | q++; |
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| 43 | s_processor_local_apic *sla; |
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| 44 | s_io_apic *sio; |
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| 45 | s_interrupt_source_override *siso; |
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| 46 | s_nmi *snmi; |
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| 47 | s_local_apic_nmi *slan; |
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| 48 | s_local_apic_address_override *slaao; |
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| 49 | s_io_sapic *siosapic; |
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| 50 | s_local_sapic *sls; |
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| 51 | s_madt *madt = &acpi->madt; |
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| 52 | |
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| 53 | switch (type) { |
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| 54 | case PROCESSOR_LOCAL_APIC: |
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| 55 | sla = &madt->processor_local_apic[madt->processor_local_apic_count]; |
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| 56 | sla->type = type; |
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| 57 | sla->length = length; |
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| 58 | cp_struct(&sla->acpi_id); |
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| 59 | cp_struct(&sla->apic_id); |
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| 60 | cp_struct(&sla->flags); |
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| 61 | madt->processor_local_apic_count++; |
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| 62 | break; |
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| 63 | case IO_APIC: |
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| 64 | sio = &madt->io_apic[madt->io_apic_count]; |
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| 65 | sio->type = type; |
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| 66 | sio->length = length; |
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| 67 | cp_struct(&sio->io_apic_id); |
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| 68 | cp_struct(&sio->reserved); |
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| 69 | cp_struct(&sio->io_apic_address); |
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| 70 | cp_struct(&sio->global_system_interrupt_base); |
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| 71 | madt->io_apic_count++; |
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| 72 | break; |
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| 73 | case INTERRUPT_SOURCE_OVERRIDE: |
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| 74 | siso = |
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| 75 | &madt->interrupt_source_override[madt-> |
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| 76 | interrupt_source_override_count]; |
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| 77 | siso->type = type; |
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| 78 | siso->length = length; |
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| 79 | siso->bus = *q; |
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| 80 | q++; |
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| 81 | siso->source = *q; |
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| 82 | q++; |
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| 83 | cp_struct(&siso->global_system_interrupt); |
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| 84 | cp_struct(&siso->flags); |
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| 85 | madt->interrupt_source_override_count++; |
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| 86 | break; |
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| 87 | case NMI: |
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| 88 | snmi = &madt->nmi[madt->nmi_count]; |
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| 89 | snmi->type = type; |
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| 90 | snmi->length = length; |
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| 91 | cp_struct(&snmi->flags); |
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| 92 | cp_struct(&snmi->global_system_interrupt); |
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| 93 | madt->nmi_count++; |
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| 94 | break; |
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| 95 | case LOCAL_APIC_NMI_STRUCTURE: |
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| 96 | slan = &madt->local_apic_nmi[madt->local_apic_nmi_count]; |
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| 97 | slan->type = type; |
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| 98 | slan->length = length; |
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| 99 | cp_struct(&slan->acpi_processor_id); |
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| 100 | cp_struct(&slan->flags); |
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| 101 | cp_struct(&slan->local_apic_lint); |
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| 102 | madt->local_apic_nmi_count++; |
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| 103 | break; |
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| 104 | case LOCAL_APIC_ADDRESS_OVERRIDE_STRUCTURE: |
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| 105 | slaao = |
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| 106 | &madt->local_apic_address_override[madt-> |
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| 107 | local_apic_address_override_count]; |
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| 108 | slaao->type = type; |
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| 109 | slaao->length = length; |
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| 110 | cp_struct(&slaao->reserved); |
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| 111 | cp_struct(&slaao->local_apic_address); |
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| 112 | madt->local_apic_address_override_count++; |
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| 113 | break; |
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| 114 | case IO_SAPIC: |
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| 115 | siosapic = &madt->io_sapic[madt->io_sapic_count]; |
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| 116 | siosapic->type = type; |
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| 117 | siosapic->length = length; |
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| 118 | cp_struct(&siosapic->io_apic_id); |
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| 119 | cp_struct(&siosapic->reserved); |
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| 120 | cp_struct(&siosapic->global_system_interrupt_base); |
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| 121 | cp_struct(&siosapic->io_sapic_address); |
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| 122 | madt->io_sapic_count++; |
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| 123 | break; |
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| 124 | case LOCAL_SAPIC: |
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| 125 | sls = &madt->local_sapic[madt->local_sapic_count]; |
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| 126 | sls->type = type; |
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| 127 | sls->length = length; |
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| 128 | cp_struct(&sls->acpi_processor_id); |
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| 129 | cp_struct(&sls->local_sapic_id); |
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| 130 | cp_struct(&sls->local_sapic_eid); |
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| 131 | cp_struct(sls->reserved); |
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| 132 | cp_struct(&sls->flags); |
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| 133 | cp_struct(&sls->acpi_processor_uid_value); |
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| 134 | if ((sls->acpi_processor_uid_string = |
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| 135 | malloc(length - ACPI_PROCESSOR_UID_STRING_OFFSET)) != NULL) { |
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| 136 | memcpy(sls->acpi_processor_uid_string, q, |
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| 137 | length - ACPI_PROCESSOR_UID_STRING_OFFSET); |
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| 138 | q += length - ACPI_PROCESSOR_UID_STRING_OFFSET; |
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| 139 | } |
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| 140 | madt->local_sapic_count++; |
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| 141 | break; |
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| 142 | default: |
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| 143 | printf("Unkown APIC structure type %u, size=%u \n", type, length); |
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| 144 | q += length - 2; |
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| 145 | break; |
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| 146 | } |
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| 147 | return q; |
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| 148 | } |
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| 149 | |
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| 150 | void parse_madt(s_acpi * acpi) |
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| 151 | { |
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| 152 | /* Let's seach for FADT table */ |
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| 153 | uint8_t *q, *max_address; |
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| 154 | s_madt *m = &acpi->madt; |
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| 155 | |
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| 156 | /* Fixing table name */ |
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| 157 | memcpy(m->header.signature, APIC, sizeof(APIC)); |
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| 158 | |
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| 159 | /* Copying remaining structs */ |
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| 160 | q = (uint8_t *)m->address; |
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| 161 | q += ACPI_HEADER_SIZE; |
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| 162 | |
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| 163 | max_address = (uint8_t *)m->address; |
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| 164 | max_address += m->header.length; |
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| 165 | |
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| 166 | cp_struct(&m->local_apic_address); |
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| 167 | cp_struct(&m->flags); |
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| 168 | |
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| 169 | while (q < max_address) { |
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| 170 | q = add_apic_structure(acpi, q); |
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| 171 | } |
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| 172 | } |
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