Configurable access to a multi-die reconfigurable processor by a virtual function

A method of operating a data processing system that comprises a communication link, a runtime processor that is operatively coupled to the communication link, and a reconfigurable processor, wherein the reconfigurable processor comprises a package, and first and second dies that are arranged in the package, wherein the first die comprises K arrays of coarse-grained reconfigurable units, where K is an integer greater than 1, and a first communication link interface that is operatively coupled to the communication link, thereby coupling the first die to the runtime processor via the communication link, and wherein the second die is coupled to the first die and comprises L arrays of coarse-grained reconfigurable units, where L is an integer greater than 1, and a second communication link interface that is operatively coupled to the communication link, thereby coupling the second die to the runtime processor via the communication link, the method comprising:

• configuring, with the runtime processor, the first communication link interface to provide access to the K arrays of coarse-grained reconfigurable units through the communication link from a first physical function driver and from up to M virtual function drivers, where M is a non-negative integer;
• configuring, with the runtime processor, a first physical function that is associated with the first physical function driver on the first die of the reconfigurable processor, wherein the first physical function is provided access to both a first portion and a second portion of the first die;
• configuring, with the runtime processor, the second communication link interface to provide access to the L arrays of coarse-grained reconfigurable units through the communication link from a second physical function driver and from up to N virtual function drivers, where N is a non-negative integer;
• configuring, with the runtime processor, a second physical function that is associated with the second physical function driver on the second die of the reconfigurable processor, wherein the second physical function is provided access to both a first portion and a second portion of the second die;
• and
• configuring, with the runtime processor, a virtual function that is associated with one of the M virtual function drivers or with one of the N virtual function drivers on the first die and/or the second die of the reconfigurable processor, wherein the virtual function is provided access to the second portion of the first and/or to the second portion of the second die and is blocked from accessing the first portion of the first die and the first portion of the second die.

A non-transitory computer-readable storage medium including instructions that, when executed by a processing unit, cause the processing unit to operate a data processing system that comprises a communication link, a runtime processor that is operatively coupled to the communication link, and a reconfigurable processor, wherein the reconfigurable processor comprises a package, and first and second dies that are arranged in the package, wherein the first die comprises K arrays of coarse-grained reconfigurable units, where K is an integer greater than 1, and a first communication link interface that is operatively coupled to the communication link, thereby coupling the first die to the runtime processor via the communication link, and wherein the second die is coupled to the first die and comprises L arrays of coarse-grained reconfigurable units, where L is an integer greater than 1, and a second communication link interface that is operatively coupled to the communication link, thereby coupling the second die to the runtime processor via the communication link, the instructions comprising:

• configuring the first communication link interface to provide access to the K arrays of coarse-grained reconfigurable units through the communication link from a first physical function driver and from up to M virtual function drivers, where M is a non-negative integer;
• configuring a first physical function that is associated with the first physical function driver on the first die of the reconfigurable processor, wherein the first physical function is provided access to both a first portion and a second portion of the first die;
• configuring the second communication link interface to provide access to the L arrays of coarse-grained reconfigurable units through the communication link from a second physical function driver and from up to N virtual function drivers, where N is a non-negative integer;
• configuring a second physical function that is associated with the second physical function driver on the second die of the reconfigurable processor, wherein the second physical function is provided access to both a first portion and a second portion of the second die;
• and
• configuring a virtual function that is associated with one of the M virtual function drivers or with one of the N virtual function drivers on the first die and/or the second die of the reconfigurable processor, wherein the virtual function is provided access to the second portion of the first and/or to the second portion of the second die and is blocked from accessing the first portion of the first die and the first portion of the second die.