Console Compute Card PCIe Endpoint Sequencing for Host Integration
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Solution Overview
Problem
Modern game consoles, particularly those like the PlayStation® 5, present challenges for game development due to their proprietary nature, requiring adaptation or specialized hardware for cloud-based development, which is not easily integrated with existing systems.
Innovation Solution
A console compute card with an accelerated processing unit (APU) and endpoint management bridge (EMB) is connected via PCIe, enabling enumeration of host-facing endpoints before local endpoints, facilitating integration into host systems while maintaining separation of PCIe fabrics and allowing communication between the console compute card and host system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If game console hardware is made proprietary to provide standardized resources for consumers, then consumer experience is improved, but game development complexity increases
Solution Approach 1:
The system is segmented into two distinct PCIe fabric domains: a host-facing domain for system integration and a console-facing domain for game execution. The endpoint management bridge divides PCIe endpoints into host-facing endpoints (enumerated by host system) and console-facing endpoints (enumerated by console APU), allowing each side to operate independently while maintaining standardized consumer interfaces.
2Adaptability or versatility
If specialized hardware is created to enable game development on console, then development capability is improved, but integration with host systems becomes complex
Solution Approach 1:
The console compute card is designed with universal PCIe interfaces that can function both as a standalone game console and as an integrated computing resource within a host system. The dual-fabric architecture with endpoint management bridge allows the same hardware to serve multiple purposes: consumer gaming when isolated, and development/cloud computing when integrated, eliminating the need for separate specialized hardware.
3Speed
If PCIe endpoints are enumerated simultaneously during boot-up, then system initialization speed is improved, but enumeration conflicts occur between host system and console APU
Solution Approach 1:
The endpoint management bridge implements preliminary action by delaying the enumeration of console-facing endpoints until after the host system has completed enumeration of host-facing endpoints. This sequential enumeration approach prevents conflicts while maintaining efficient boot-up performance, as each side enumerates its endpoints without interference from the other.
Data Source
AI summary
A method includes: initiating boot-up of a host system, wherein initiating boot-up causes powering of a console compute card connected via a PCIe connection to the host system, wherein the console compute card includes an accelerated processing unit (APU) and an endpoint management bridge (EMB); wherein the EMB exposes a plurality of PCIe endpoints, including one or more local endpoints, and one or more host-facing endpoints; wherein the boot-up of the host system includes enumerating the host-facing endpoints by the host system through a PCIe fabric of the host system; wherein the EMB delays enumeration of the local endpoints until the enumeration of the host-facing endpoints is completed; after completion of the enumeration of the host-facing endpoints by the host system, then enumerating the local endpoints by the APU of the console compute card through a PCIe fabric of the console compute card.