Configuration of a large-scale reconfigurable computing arrangement using a virtual file system interface

• US 8,271,557 B1
• Filed: 04/20/2009
• Issued: 09/18/2012
• Est. Priority Date: 04/20/2009
• Status: Active Grant

• Current Assignee: Xilinx, Inc. (Advanced Micro Devices, Inc.)
• Original Assignee: Xilinx, Inc. (Advanced Micro Devices, Inc.)
• Inventors: Lysaght, Patrick, Blodget, Brandon J., Donlin, Adam P., Hartke, Paul M.
• Primary Examiner(s): Chbouki, Tarek
• Application Number:
  US12/426,943
• Time in Patent Office: 1,247 Days
• Field of Search: 707/822
• US Class Current: 707/822
• CPC Class Codes: G06F 16/196 Specific adaptations of the file system to access devices and non-file objects via standard file system access operations, e.g. pseudo file systems dedicated interfaces to storage systems G06F3/0601

Abstract

A top-level directory of a virtual file system is created. A hierarchy of directories is created under the top-level directory including creating a first file that contains an architecture description of the multi-device circuit arrangement. The directories have names indicative of the plurality of devices and configurable resources of the plurality of devices of the architecture description specified in the first file. A first set of one or more files is created that contain state data or configuration data for configuring resources of the plurality of devices to perform functions specified by the configuration data. A mapping of the configuration data to the resources of the plurality of devices is determined, and configuration data is stored in the configurable resources according to the mapping.

Claims

1. A method for controlling configuration of a plurality of devices of a multi-device circuit arrangement, comprising:

creating, using a processor, a top-level directory of a virtual file system, wherein the virtual file system is registered with an operating system;

in response to contents of a first file that contains an architecture description of the multi-device circuit arrangement and instantiation of the first file under the top-level directory, creating a hierarchy of device directories under the top-level directory, wherein the hierarchy of device directories have names indicative of the plurality of devices, and wherein each of the hierarchy of device directories includes at least one resource directory that includes at least one subdirectory or file that represents configuration data for programming configurable resources of a corresponding one of the plurality of devices of the multi-device circuit arrangement in order to perform functions specified by the configuration data, wherein each of the plurality of devices is a configurable integrated circuit;

determining a mapping of the configuration data to the resources of the plurality of devices; and

storing the configuration data in the configurable resources according to the mapping,

wherein the creating the hierarchy of device directories under the top-level directory in response to instantiation of the first file is in response to a copy-file operating system file access command that creates under the top-level directory the first file that contains the architecture description.

2. The method of claim 1, wherein determining the mapping comprises:

reading constraint information from the first set of one or more files;

determining resources of the plurality of devices that satisfy the constraints; and

assigning the configuration data to the resources determined to satisfy the constraints.

3. The method of claim 1, further comprising, in response to invocation of an operating system file access command that inputs program code from a program file to a memory device of the plurality of devices, performing the steps including:

creating an interface circuit for the memory device; and

reading program code from the program file, inputting the program code to the interface circuit, and writing the program code to the memory device.

4. The method of claim 3, wherein the operating system file access command that inputs program code from a program file to a memory device is a command that inputs the program file to a named software pipe associated with the interface circuit.

5. The method of claim 1, further comprising:

reading the state data from a first device in response to invocation of an operating system file access command that references a file under a directory that represents the first device;

storing the state data in a second device in response to invocation of an operating system file access command that references a directory that represents the second device; and

storing configuration data in the second device in response to invocation of an operating system file access command that references a directory that represents the second device.

6. The method of claim 1, further comprising automatically starting a self-test of one of the plurality of devices in response to invocation of an operating system file system command on a directory that represents the one of the plurality of devices.

7. The method of claim 6, wherein the operating system file system command on the directory is a command that opens the directory.

8. The method of claim 1, further comprising:

wherein the creating the hierarchy of device directories includes creating two or more virtual system directories under the top-level directory and a respective hierarchy of device directories under each virtual system directory, each virtual system directory represents a respective virtual system, and the directories under each virtual system directory are respectively representative of a subset of the plurality of devices and configurable resources of the subset assigned to the virtual system represented by the virtual system directory;

assigning access rights to the virtual system directories for users of the virtual systems; and

denying access to one of the two or more virtual system directories and the respective hierarchy of device directories under the one of the virtual system directories in response to a user invoking an operating system file system access command that references the one virtual system directory or the respective hierarchy of device directories, and the user not having access rights to the one virtual system directory.

9. The method of claim 1, wherein creating a hierarchy of device directories under the top-level directory comprises creating the hierarchy of device directories under the top-level directory in response to invocation of an operating system file access command.

10. The method of claim 1, further comprising at least one channel directory that represents a plurality of communication channels between the plurality of devices.

11. A storage device, comprising:

a non-transitory processor readable medium configured with instructions for controlling configuration of a plurality of devices of a multi-device circuit arrangement, the instructions when executed by one or more processors causing the one or more processors to perform the steps including;

creating a top-level directory of a virtual file system, wherein the virtual file system is registered with an operating system;

in response to contents of a first file that contains an architecture description of the multi-device circuit arrangement and instantiation of the first file under the top-level directory, creating a hierarchy of device directories under the top-level directory, wherein the hierarchy of device directories have names indicative of the plurality of devices, and wherein each of the hierarchy of device directories includes at least one resource directory that includes at least one subdirectory or file that represents configuration data for programming configurable resources of a corresponding one of the plurality of devices of the multi-device circuit arrangement in order to perform functions specified by the configuration data, wherein each of the plurality of devices is a configurable integrated circuit;

determining a mapping of the configuration data to the resources of the plurality of devices; and

storing the configuration data in the configurable resources according to the mapping,

wherein the creating the hierarchy of device directories under the top-level directory in response to instantiation of the first file is in response to a copy-file operating system file access command that creates under the top-level directory the first file that contains the architecture description.

12. The storage device of claim 11, wherein determining the mapping comprises:

reading constraint information from the first set of one or more files;

determining resources of the plurality of devices that satisfy the constraints; and

assigning the configuration data to the resources determined to satisfy the constraints.

13. The storage device of claim 11, wherein the instructions further cause the one or more processors, in response to invocation of an operating system file access command that inputs program code from a program file to a memory device of the plurality of devices, to perform the steps including:

creating an interface circuit for the memory device; and

reading program code from the program file, inputting the program code to the interface circuit, and writing the program code to the memory device.

14. The storage device of claim 11, wherein the instructions further cause the one or more processors to perform the steps including:

reading the state data from a first device in response to invocation of an operating system file access command that references a file under a directory that represents the first device;

storing the state data in a second device in response to invocation of an operating system file access command that references a directory that represents the second device; and

storing configuration data in the second device in response to invocation of an operating system file access command that references a directory that represents the second device.

15. The storage device of claim 11, wherein the instructions further cause the one or more processors to perform the steps including automatically starting a self-test of one of the plurality of devices in response to invocation of an operating system file system command on a directory that represents the one of the plurality of devices.

16. The storage device of claim 15, wherein the operating system file system command on the directory is a command that opens the directory.

17. The storage device of claim 11, wherein the instructions further cause the one or more processors to perform the steps including:

wherein the creating the hierarchy of device directories under the top-level directory includes the creating the hierarchy of device directories under the top-level directory in response to invocation of an operating system file access command, and the creating the hierarchy of device directories under the top-level directory further includes creating two or more virtual system directories under the top-level directory and a respective hierarchy of device directories under each virtual system directory, each virtual system directory represents a respective virtual system, and the directories under each virtual system directory are respectively representative of a subset of the plurality of devices and configurable resources of the subset assigned to the virtual system represented by the virtual system directory;

assigning access rights to the virtual system directories for users of the virtual systems; and

denying access to one of the two or more virtual system directories and the respective hierarchy of device directories under the one of the virtual system directories in response to a user invoking an operating system file system access command that references the one virtual system directory or the respective hierarchy of device directories, and the user not having access rights to the one virtual system directory.