Interconnect agent
View Patent ↗A method for modifying an address in a multi-processor system may include performing a first transaction to modify an address between a first processor and an interconnect agent associated with the first processor and storing data for the address on the interconnect agent. The method may further include performing a second transaction to modify an address between the interconnect agent and a memory associated with a second processor and storing the data in the memory.
1. An interconnect agent comprising:
data storage; and
logic to:
detect a request for ownership sent from a first processor to a second processor, the request for ownership associated with an address;
apply a coherence protocol to the address;
transmit a grant of ownership to the first processor;
receive a write message from the first processor, the write message including data for the address;
transmit an acknowledgement to the first processor; and
store the data in the data storage.
2. The interconnect agent according to claim 1 , further comprising logic to:
receive a grant of ownership from the second processor;
transmit a write message to a memory associated with the second processor, the write message including the data for the address; and
receive an acknowledgement from the memory.
3. The interconnect agent according to claim 1 , further comprising logic to track a status of the address.
4. The interconnect agent according to claim 3 , further comprising logic to maintain a local coherence domain for the first processor.
5. The interconnect agent according to claim 4 , further comprising logic to maintain a coherence domain for the second processor.
6. A system comprising:
a first processor;
an interconnect agent coupled to the first processor, the interconnect agent having data storage;
an interconnect network coupled to the interconnect agent;
a second processor coupled to the interconnect network; and
a memory coupled to the second processor;
wherein the interconnect agent to:
detect a request for ownership sent from the first processor to the second processor, the request for ownership associated with an address;
transmit a grant of ownership to the first processor;
receive a write message from the first processor, the write message including data for the address;
transmit an acknowledgement to the first processor.
7. The system according to claim 6 , wherein the interconnect agent is further to apply a coherence protocol to the address.
8. The system according to claim 6 , wherein the interconnect agent is further to store the data in the data storage.
9. The system according to claim 6 , wherein the interconnect agent is further to:
receive a grant of ownership from the second processor;
transmit a write message to the memory, the write message including the data for the address; and
receive an acknowledgement from the memory.
10. The system according to claim 9 , wherein the second processor is to store the data in the memory.
11. The system according to claim 6 , wherein the interconnect agent is further to track a status of the address.
12. A method comprising:
detecting, by an interconnect agent, a request for ownership sent from a first processor to a second processor, the request for ownership associated with an address;
transmitting, by the interconnect agent, a grant of ownership to the first processor;
receiving a write message from the first processor, the write message including data for the address; and
transmitting an acknowledgement to the first processor.
13. The method of claim 12 , further comprising tracking a status of the address.
14. The method of claim 13 , wherein the status of the address is tracked using a resource on the interconnect agent.
15. The method of claim 13 , further comprising maintaining a local coherence domain for the first processor.
16. The method of claim 14 , further comprising maintaining a coherence domain for the second processor.
17. The method of claim 12 , further comprising applying a coherence protocol to the address.
18. The method of claim 12 , further comprising storing the data in data storage.