e4fae0c4_SI_Miniport_Driver___Black_God__Description
[Notification Type] NextRequest [Description] 
Indicates the miniport driver is ready for another request to a target that is not currently busy. This notification should be sent by the miniport driver as soon as the driver is ready for another request. Usually, this notification is sent from the HwScsiStartIo routine but, sometimes, from the HwScsiInterrupt (or HwScsiEnableInterruptsCallback) routine.
Notes on Windows SCSI Miniport Driver | Black God
Description