forked from 0ad/0ad
73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
/* Copyright (c) 2010 Wildfire Games
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* minimal subset of ACPI
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*/
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#ifndef INCLUDED_ACPI
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#define INCLUDED_ACPI
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#pragma pack(push, 1)
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// common header for all ACPI tables
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struct AcpiTable
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{
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char signature[4];
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u32 size; // table size [bytes], including header
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u8 revision;
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u8 checksum; // to make sum of entire table == 0
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char oemId[6];
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char oemTableId[8];
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u32 oemRevision;
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char creatorId[4];
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u32 creatorRevision;
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};
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enum AcpiAddressSpace
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{
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// (these are not generally powers-of-two - some values have been omitted.)
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ACPI_AS_MEMORY = 0,
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ACPI_AS_IO = 1,
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ACPI_AS_PCI_CONFIG = 2,
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ACPI_AS_SMBUS = 4
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};
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// address of a struct or register
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struct AcpiGenericAddress
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{
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u8 addressSpaceId;
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u8 registerBitWidth;
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u8 registerBitOffset;
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u8 accessSize;
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u64 address;
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};
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#pragma pack(pop)
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extern bool acpi_Init();
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extern void acpi_Shutdown();
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extern const AcpiTable* acpi_GetTable(const char* signature);
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#endif // #ifndef INCLUDED_ACPI
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