文件名称:PCI BIOS SPECIFICATION
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- 2009-03-24
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1. Introduction ............................................................................................................... 1
1.1. Purpose ....................................................................................................... 1
1.2. Scope .......................................................................................................... 1
1.3. Related Documents..................................................................................... 1
1.4. Terms and Abbreviations ........................................................................... 1
2. Functional Descr iption .............................................................................................. 2
3. Assumptions and Constraints .................................................................................... 3
3.1. ROM BIOS Location.................................................................................. 3
3.2. Calling Conventions................................................................................... 3
3.3. BIOS32 Service Directory.......................................................................... 4
3.3.1. Determining the existence of BIOS32 Service Directory............ 4
3.3.2. Calling Interface for BIOS32 Service Directory ......................... 5
3.4. PCI BIOS 32-bit service............................................................................. 6
4. Host Interface ............................................................................................................ 7
4.1. Identifying PCI Resources.......................................................................... 7
4.1.1. PCI BIOS Present ........................................................................ 7
4.1.2. Find PCI Device .......................................................................... 9
4.1.3. Find PCI Class Code ................................................................... 10
4.2. PCI Support Functions ............................................................................... 11
4.2.1. Generate Special Cycle................................................................ 11
4.2.2. Get PCI Interrupt Routing Options.............................................. 12
4.2.3. Set PCI Hardware Interrupt ......................................................... 15
4.3. Accessing Configuration Space.................................................................. 17
4.3.1. Read Configuration Byte ............................................................. 17
4.3.2. Read Configuration Word ........................................................... 18
4.3.3. Read Configuration Dword ......................................................... 19
4.3.4. Write Configuration Byte ............................................................ 20
4.3.5. Write Configuration Word .......................................................... 21
4.3.6. Write Configuration Dword ........................................................ 22
APPENDIX A: Function List......................................................................................... 23
APPENDIX B: Return Code List ................................................................................... 24
1.1. Purpose ....................................................................................................... 1
1.2. Scope .......................................................................................................... 1
1.3. Related Documents..................................................................................... 1
1.4. Terms and Abbreviations ........................................................................... 1
2. Functional Descr iption .............................................................................................. 2
3. Assumptions and Constraints .................................................................................... 3
3.1. ROM BIOS Location.................................................................................. 3
3.2. Calling Conventions................................................................................... 3
3.3. BIOS32 Service Directory.......................................................................... 4
3.3.1. Determining the existence of BIOS32 Service Directory............ 4
3.3.2. Calling Interface for BIOS32 Service Directory ......................... 5
3.4. PCI BIOS 32-bit service............................................................................. 6
4. Host Interface ............................................................................................................ 7
4.1. Identifying PCI Resources.......................................................................... 7
4.1.1. PCI BIOS Present ........................................................................ 7
4.1.2. Find PCI Device .......................................................................... 9
4.1.3. Find PCI Class Code ................................................................... 10
4.2. PCI Support Functions ............................................................................... 11
4.2.1. Generate Special Cycle................................................................ 11
4.2.2. Get PCI Interrupt Routing Options.............................................. 12
4.2.3. Set PCI Hardware Interrupt ......................................................... 15
4.3. Accessing Configuration Space.................................................................. 17
4.3.1. Read Configuration Byte ............................................................. 17
4.3.2. Read Configuration Word ........................................................... 18
4.3.3. Read Configuration Dword ......................................................... 19
4.3.4. Write Configuration Byte ............................................................ 20
4.3.5. Write Configuration Word .......................................................... 21
4.3.6. Write Configuration Dword ........................................................ 22
APPENDIX A: Function List......................................................................................... 23
APPENDIX B: Return Code List ................................................................................... 24
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