// uart.h

UART_HARDWARE_WRITE_ULONG64 UartHardwareWriteUlong64;

VOID UartHardwareWriteUlong64(
  PULONG64 Address,
  ULONG64 Value
)
{...}
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Windows Driver Kit DDI reference (nc-uart-uart_hardware_write_ulong64)

UART_HARDWARE_WRITE_ULONG64 callback function

Description

Writes a ULONG64 value to the specified register address.

Parameters

`Address`

A pointer to the register, which must be a mapped range in memory space.

`Value`

A ULONG64 value to be written to the register.

Prototype

//Declaration

UART_HARDWARE_WRITE_ULONG64 UartHardwareWriteUlong64;

// Definition

VOID UartHardwareWriteUlong64
(
    PULONG64 Address
    ULONG64 Value
)
{...}

Remarks

Register your implementation of this callback function by setting the WriteRegister64 member of the _UART_HARDWARE_ACCESS structure.

UART_HARDWARE_WRITE_ULONG64 - NtDoc