Completion Queue Handling By Host Controller For Storage Device

    公开(公告)号:US20240045618A1

    公开(公告)日:2024-02-08

    申请号:US18323206

    申请日:2023-05-24

    Applicant: MediaTek Inc.

    CPC classification number: G06F3/0659 G06F3/0604 G06F3/0679

    Abstract: A host system is coupled to a storage device and manages completion queues (CQs) for the storage device. The host system includes a host controller and memory that stores submission queues (SQs) and the CQs. The host controller fetches a command from a given SQ that corresponds to a target CQ. The host controller saves the command in an SQ internal buffer of the host controller, calculates an available capacity (AC) associated with the given SQ for the host system to store a response to the command from the storage device, and sends the command to the storage device when the available capacity is non-zero. The available capacity is calculated based on, at least in part, available slots in the target CQ.

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