NdisReadRegisterUlong function

NdisReadRegisterUlong is called by the miniport driver to read a ULONG from a memory-mapped device register.

Syntax


VOID NdisReadRegisterUlong(
  _In_   PULONG Register,
  _Out_  PULONG Data
);

Parameters

Register [in]

Pointer to the memory-mapped register. This virtual address must fall within a range returned by an initialization-time call to NdisMMapIoSpace.

Data [out]

Pointer to the caller-supplied variable in which this function returns the ULONG read from Register .

Return value

None

Remarks

If a driver calls this function, a NIC's device registers must be mapped to noncached memory during driver initialization.

Requirements

Version

Supported for NDIS 6.0 and NDIS 5.1 drivers (see NdisReadRegisterUlong (NDIS 5.1)) in Windows Vista. Supported for NDIS 5.1 drivers (see NdisReadRegisterUlong (NDIS 5.1)) in Windows XP.

Header

Ndis.h (include Ndis.h)

IRQL

Any level

See also

MiniportInitializeEx
NdisMMapIoSpace
NdisReadRegisterUchar
NdisReadRegisterUshort
NdisWriteRegisterUlong

 

 

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