US 2026/0010486 A1 · DMA Controller Architecture for Receiving Requests from Non-host Devices

Abstract

A chiplet hub for interconnecting a series of connected chiplets and internal resources. An HBM is mounted on top of the chiplet hub to provide multiple party access to the HBM and to save System in Package (SIP) area. The chiplet hub can form system instances to combine connected chiplets and internal resources, with the system instances being isolated. One type of system instance is a private memory system instance with private memory gathered from multiple different memory devices. The chiplet hubs can be interconnected to form a clustered chiplet hub to provide for a larger number of chiplet connections and more complex system. A DMA controller can receive DMA service requests from devices other than a system hosted, including in cases where the chiplet hub is non-hosted.

Claims24

Dependent claims

A system comprising:

a first memory having a first address space;
a second memory having a second address space;
a non-host device for providing direct memory access (DMA) requests, the non-host device having a non-host device address space;
and
a DMA controller system including:
a request manager for receiving a DMA request for transferring data from the first memory and providing the data to the second memory, the DMA request received from the non-host device, the request manager forming a plurality of DMA commands from the DMA request;
and
an agent coupled to the request manager and operating in the address spaces of the first and second memories, the agent for receiving the plurality of DMA commands from the request manager and performing a read transaction from the first memory and a write transaction to the second memory for each DMA command.

5 more elements

Dependencies are inferred from the claim text.

DMA Controller Architecture for Receiving Requests from Non-host Devices

Life of this patent

DMA Controller Architecture for Receiving Requests from Non-host Devices

Life of this patent

Abstract

Claims24