NdisWriteRegisterUchar

NdisWriteRegisterUchar

VOID
   NdisWriteRegisterUchar(
       IN PUCHAR Register,
       IN UCHAR Data
       );

NdisWriteRegisterUchar is called by the NIC driver to write a UCHAR to a memory-mapped device register.

Parameters

Register

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

Data

Specifies the caller-supplied UCHAR that this function transfers to the Register.

Comments

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

Callers of NdisWriteRegisterUchar can be running at any IRQL.