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PCI_accessReg

Function to read/write values to PCI congfiguration space registers

Declaration

ulong PCIAPI PCI_accessReg(
int index,
ulong value,
int func,
PCIDeviceInfo *info)

Prototype In

pcilib.h

Parameters

index | Index of the register to access
value | Value to write to the register for write access
func | Function to implement (PCIAccessRegFlags)
info | PCI device information block for device to access

Return Value

The value read from the register for read operations

Description

This function can be used to read or write, BYTE, WORD and DWORD values to and from PCI configuration space registers. Please refer to the PCIAccessRegFlags type for the different operations supported. The PCI device that is accessed is the one described by the PCIDeviceInfo structure passed in the info parameter (or more correctly the PCIslot value stored within this structure).

See Also

PCI_getNumDevices, PCI_enumerate, PCI_accessReg, PCI_readRegBlock PCI_writeRegBlock

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