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公开(公告)号：US12210891B2
公开(公告)日：2025-01-28
申请号：US17126315
申请日：2020-12-18
Inventor： Yinan Jiang , ZhenYu Min , WenWen Tang
Abstract: A processing system includes physical function circuitry to execute virtual functions and a processing unit configured to operate in a first mode that allows more than one virtual function to execute on the physical function circuitry and a second mode that constrains the physical function circuitry to executing a single virtual function. A first virtual function modifies a state of the processing unit in response to the processing unit being in the second mode. A host driver executing on the processing unit modifies an operating mode indicator to indicate that the processing unit is operating in the first mode or to indicate that the processing unit is operating in the second mode. Microcode executing on the processing unit accesses the operating mode indicator to determine whether the processing unit is operating in the first mode or the second mode.
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Patent Agency Ranking
公开(公告)号：US12169731B2
公开(公告)日：2024-12-17
申请号：US17564144
申请日：2021-12-28
Applicant: ATI TECHNOLOGIES ULC
Inventor： Yinan Jiang , Shaoyun Liu , Aranyak Mishra , Maria Joo
IPC: G06F9/455 , G06F9/38 , G06F9/4401
Abstract: A processing system selects a reset sequence based on a sideband connected configuration of a plurality of processing units. The processing system identifies whether the plurality of processing units is in the sideband connected configuration, so that the plurality of processing units works together on assigned operations. Based on the identification, the processing system selects and executes one of a plurality of available reset sequences. The processing system is thus able to tailor the executed reset sequence for the configuration of the plurality of processing units, thereby reducing the number of overall system resets and improving processing efficiency.
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公开(公告)号：US12169729B2
公开(公告)日：2024-12-17
申请号：US17453341
申请日：2021-11-02
Applicant: ATI Technologies ULC
Inventor： Yinan Jiang , Ahmed M. Abdelkhalek , Guopei Qiao , Andy Sung , Haibo Liu , Dezhi Ming , Zhidong Xu
Abstract: A technique for varying firmware for different virtual functions in a virtualized device is provided. The virtualized device includes a hardware accelerator and a microcontroller that executes firmware. The virtualized device is virtualized in that the virtualized device performs work for different virtual functions (with different virtual functions associated with different virtual machines), each function getting a “time-slice” during which work is performed for that function. To vary the firmware, each time the virtualized device switches from performing work for a current virtual function to work for a subsequent virtual function, one or more microcontrollers of the virtualized device examines memory storing addresses for firmware for the subsequent virtual function and begins executing the firmware for that subsequent virtual function. The addresses for the firmware are provided by a corresponding virtual machine at configuration time.
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公开(公告)号：US20230401082A1
公开(公告)日：2023-12-14
申请号：US17839821
申请日：2022-06-14
Applicant: ATI Technologies ULC
Inventor： Yinan Jiang , Shaoyun Liu
CPC classification number: G06F9/45558 , G06F9/4881 , G06F2009/45579
Abstract: A system and method for efficiently scheduling tasks to multiple endpoint devices are described. In various implementations, a computing system has a physical hardware topology that includes multiple endpoint devices and one or more general-purpose central processing units (CPUs). A virtualization layer is added between the hardware of the computing system and an operating system that creates a guest virtual machine (VM) with multiple endpoint devices. The guest VM utilizes a guest VM topology that is different from the physical hardware topology. The processor of an endpoint device that runs the guest VM accesses a table of latency information for one or more pairs of endpoints of the guest VM based on physical hardware topology, rather than based on the guest VM topology. The processor schedules tasks on paths between endpoint devices based on the table.
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公开(公告)号：US11768696B2
公开(公告)日：2023-09-26
申请号：US17121678
申请日：2020-12-14
Applicant: ATI Technologies ULC
Inventor： Yinan Jiang , Kamraan Nasim , Dezhi Ming , Ahmed M. Abdelkhalek , Dmytro Chenchykov , Andy Sung
CPC classification number: G06F9/45558 , G06F9/45545 , G06F9/4812 , G06F2009/45591 , G06F2009/45595
Abstract: A technique for managing access to a micro engine, the method comprising: determining that a virtual function “VF”) is to be given access to direct communication with a micro engine; in response to the determining, configuring the micro engine to accept direct communication from the VF; monitoring for unpermitted communication; and after a time period has expired, configuring the micro engine to no longer accept direct communication from the VF.
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公开(公告)号：US11269672B2
公开(公告)日：2022-03-08
申请号：US16399312
申请日：2019-04-30
Inventor： Yinan Jiang , Kun Xue
Abstract: A processing system detects excessive requests sent on behalf of a virtual machine executing at the processing system within a predetermined period of time and denies subsequent requests sent on behalf of that virtual machine until after the predetermined period of time has elapsed in order to grant access to resources of the processing system for servicing requests from other virtual machines and to prevent a virtual machine that has been compromised by an attack from overwhelming the processing system with malicious requests. The processing system sets a threshold number of event requests for each type of event request that can occur within a predetermined period of time. If the number of event requests of a certain type exceeds the threshold for that event type, the processing system ignores subsequent event requests of that type until the predetermined period of time has expired.
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