IOCTL_INTERNAL_I8042_MOUSE_WRITE_BUFFER IOCTL (ntdd8042.h)

The IOCTL_INTERNAL_I8042_MOUSE_WRITE_BUFFER request writes data to the i8042 port controller to control operation of a mouse device. An upper-level filter driver can use this request to control the operation of a mouse.

I8042prt synchronizes write buffer requests with one another. I8042prt synchronizes the actual write of data with the mouse ISR.

Major code

IRP_MJ_INTERNAL_DEVICE_CONTROL

Input buffer

Parameters.DeviceIoControl.Type3InputBuffer points to a client-allocated buffer that supplies the data to write to an i8042 port controller.

Input buffer length

Parameters.DeviceIoControl.InputBufferLength is set to the number of bytes in the input buffer, which must be greater than 1.

Output buffer

None

Output buffer length

None

Status block

The Status member is set to one of the following values:

STATUS_DEVICE_NOT_READY

The mouse interrupt is not initialized.

STATUS_INVALID_PARAMETER

The input parameters are not valid.

STATUS_IO_TIMEOUT

The request timed out.

STATUS_SUCCESS

The request completed successfully.

Requirements