The IOCTL_INTERNAL_I8042_KEYBOARD_START_INFORMATION request passes a pointer to a keyboard interrupt object. I8042prt sends this request synchronously to the top of the device stack after the keyboard interrupt object is created. Upper-level filter drivers that need to synchronize their callback operation with the I8042prt keyboard ISR can use the pointer to the keyboard interrupt object.
AssociatedIrp.SystemBuffer points to a buffer allocated by I8042prt to input an INTERNAL_I8042_START_INFORMATION structure.
Input Buffer Length
Parameters.DeviceIoControl.InputBufferLength specifies the size, in bytes, of an INTERNAL_I8042_START_INFORMATION structure.
Output Buffer Length
The Information member is set to zero.
The Status member is set to STATUS_SUCCESS.
|Header||ntdd8042.h (include Ntdd8042.h)|