IRP_MJ_DEVICE_CONTROL (Serial)

The IRP_MJ_DEVICE_CONTROL request operates a serial port.

When Sent

A client uses device control requests to do the following:

  • Get information about the port

  • Get and set registers

  • Get and set operating modes

For a description of the device control requests supported by Serial, see Serial Device Control Requests.

Input Parameters

Request specific

Output Parameters

Request specific

I/O Status Block

Request specific

Operation

Request specific

Requirements

Header

Wdm.h (include Wdm.h or Ntddk.h)

See also

IRP_MJ_INTERNAL_DEVICE_CONTROL (Serial)

 

 

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