/ IOV HC IOV-HCAN INPUT/OUTPUT VIRTUALIZATION IOV HOST CONTROLLER HC IOV-HC OF A FLASH-MEMORY-BASED STORAGE DEVICE

摘要

An input / output virtualization (IOV) host controller (HC) (IOV-HC) of a flash memory based storage device is disclosed. In one aspect, the IOV-HC is coupled to input / output (I / O) clients via corresponding client register interfaces (CRIs) and is also coupled to a flash memory based storage device. The IOV-HC includes transport request list (TRL) slot offset registers that represent slots of a shared transport request list (TRL) allocated as base slots to each of the CRIs. The IOV-HC also includes, for each of the CRIs, TRL slot count registers that indicate how many slots of a shared TRL are allocated. When a directed transfer request (TR) directed to a flash memory based storage device is received from the CRI, the IOV-HC, based on the TRL slot count register and the TRL slot offset register of a plurality of TRL slot count registers corresponding to CRI, TR / RTI for a slot of a shared TRL.