NdisReadRegisterUlong

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

VOID
  NdisReadRegisterUlong(
    IN PULONG  Register,
    OUT PULONG  Data
    );

Parameters

Register

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

Data

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

Headers

Declared in Ndis.h. Include Ndis.h.

Comments

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

Callers of NdisReadRegisterUlong can be running at any IRQL.

See Also

MiniportInitialize, NdisMMapIoSpace, NdisReadRegisterUchar, NdisReadRegisterUshort, NdisWriteRegisterUlong