公开(公告)号：US11537538B2

公开(公告)日：2022-12-27

申请号：US17242051

申请日：2021-04-27

Applicant: Apple Inc.

Inventor： Harshavardhan Kaushikkar ,  Christopher D. Shuler ,  Srinivasa Rangan Sridharan ,  Yu Zhang ,  Kaushik Kannan ,  Deniz Balkan

IPC: G06F11/34 ,  G06F13/16 ,  G06F13/40

Abstract: In one embodiment, a cache coherent system includes one or more agents (e.g., coherent agents) that may cache data used by the system. The system may include a point of coherency in a memory controller in the system, and thus the agents may transmit read requests to the memory controller to coherently read data. The point of coherency may determine if the data is cached in another agent, and may transmit a copy back request to the other agent if the other agent has modified the data. The system may include an interconnect between the agents and the memory controller. At a point on the interconnect at which traffic from the agents converges, a copy back response may be converted to a fill for the requesting agent.

公开(公告)号：US11016913B1

公开(公告)日：2021-05-25

申请号：US16834148

申请日：2020-03-30

Applicant: Apple Inc.

Inventor： Harshavardhan Kaushikkar ,  Christopher D. Shuler ,  Srinivasa Rangan Sridharan ,  Yu Zhang ,  Kaushik Kannan ,  Deniz Balkan

IPC: G06F3/06 ,  G06F13/16 ,  G06F13/40

Abstract: In one embodiment, a cache coherent system includes one or more agents (e.g. coherent agents) that may cache data used by the system. The system may include a point of coherency in a memory controller in the system, and thus the agents may transmit read requests to the memory controller to coherently read data. The point of coherency may determine if the data is cached in another agent, and may transmit a copy back request to the other agent if the other agent has modified the data. The system may include an interconnect between the agents and the memory controller. At a point on the interconnect at which traffic from the agents converges, a copy back response may be converted to a fill for the requesting agent.

公开(公告)号：US20210303486A1

公开(公告)日：2021-09-30

申请号：US17242051

申请日：2021-04-27

Applicant: Apple Inc.

Inventor： Harshavardhan Kaushikkar ,  Christopher D. Shuler ,  Srinivasa Rangan Sridharan ,  Yu Zhang ,  Kaushik Kannan ,  Deniz Balkan

IPC: G06F13/16 ,  G06F13/40

Abstract: In one embodiment, a cache coherent system includes one or more agents (e.g., coherent agents) that may cache data used by the system. The system may include a point of coherency in a memory controller in the system, and thus the agents may transmit read requests to the memory controller to coherently read data. The point of coherency may determine if the data is cached in another agent, and may transmit a copy back request to the other agent if the other agent has modified the data. The system may include an interconnect between the agents and the memory controller. At a point on the interconnect at which traffic from the agents converges, a copy back response may be converted to a fill for the requesting agent.