Invention Grant
- Patent Title: System and methods for hierarchical inline interrupt scheme for efficient interrupt propagation and handling
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Application No.: US16947448Application Date: 2020-07-31
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Publication No.: US11436040B2Publication Date: 2022-09-06
- Inventor: Saurabh Shrivastava , Guy T. Hutchison
- Applicant: Marvell Asia Pte Ltd
- Applicant Address: SG Singapore
- Assignee: Marvell Asia Pte Ltd
- Current Assignee: Marvell Asia Pte Ltd
- Current Assignee Address: SG Singapore
- Main IPC: G06F9/48
- IPC: G06F9/48 ; G06F9/54 ; G06F11/07 ; G06F9/30 ; G06F9/38

Abstract:
A new approach of systems and methods to support a hierarchical interrupt propagation scheme for efficient interrupt propagation and handling is proposed. The hierarchical interrupt propagation scheme organizes a plurality of slave interrupt handlers associated functional blocks in a chip in a hierarchy. When an exception or error condition occurs in a functional block, a slave interrupt handler associated with the functional block creates an interrupt packet as an interrupt notification and utilizes pre-existing input and output interfaces that have already been utilized for accessing registers of the functional block to transmit the created interrupt packet to a central interrupt handler through the hierarchy without running dedicated interconnect wires out of the functional block. The central interrupt handler then processes the interrupt notifications and provides a response packet to the interrupt notification back to slave interrupt handler that created the interrupt packet to configure or adjust the functional block accordingly.
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