61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
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/*++
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Copyright (c) 2001 Microsoft Corporation
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Module Name:
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pcienum.h
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Abstract:
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This module contains support routines for the Pci bus enumeration.
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Author:
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Bassam Tabbara (bassamt) 05-Aug-2001
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Environment:
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Real mode
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--*/
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#define PCI_ITERATOR_IS_VALID(i) (i & 0x8000)
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#define PCI_ITERATOR_TO_BUS(i) (UCHAR)(((i) >> 8) & 0x7f)
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#define PCI_ITERATOR_TO_DEVICE(i) (UCHAR)(((i) >> 3) & 0x1f)
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#define PCI_ITERATOR_TO_FUNCTION(i) (UCHAR)(((i) >> 0) & 0x7)
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#define PCI_TO_ITERATOR(b,d,f) ((USHORT)(0x8000 | ((b)<<8) | ((d)<<3) | (f)))
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//
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// methods
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//
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ULONG PciReadConfig
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(
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USHORT nDevIt,
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ULONG cbOffset,
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UCHAR * pbBuffer,
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ULONG cbLength
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);
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ULONG PciWriteConfig
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(
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USHORT nDevIt,
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ULONG cbOffset,
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UCHAR * pbBuffer,
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ULONG cbLength
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);
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USHORT PciFindDevice
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(
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USHORT nVendorId, // 0 = Wildcard
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USHORT nDeviceId, // 0 = Wildcard
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USHORT nBegDevIt // 0 = begin enumeration
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);
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BOOLEAN PciInit(PCI_REGISTRY_INFO *pPCIReg);
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