NdisImmediateWritePortUshort

VOID
NdisImmediateWritePortUshort(
IN NDIS_HANDLE WrapperConfigurationContext,
IN ULONG Port,
IN USHORT Data
);

NdisImmediateWritePortUshort writes a USHORT to a given bus-relative I/O port.

Parameters

WrapperConfigurationContext: Specifies the handle input to MiniportInitialize.
Port: Specifies the bus-relative I/O port address.
Data: Specifies the caller-supplied USHORT value to write to the I/O port.

Comments

NdisImmediateWritePortUshort determines how the host accesses the given I/O port, maps the bus-relative port address, and then writes the given USHORT to the device.

A miniport driver can call NdisImmediateWritePortUshort during initialization to write data to a device I/O port when that driver has not yet called NdisMRegisterIoPortRange to obtain mapped device memory ranges. After its call to NdisMRegisterIoPortRange, the driver uses the faster NdisRawXxx functions to communicate with its NIC.

Callers of NdisImmediateWritePortUshort run at IRQL PASSIVE_LEVEL.