CONFIGURABLE LOGIC PLATFORM

• US 20180089132A1
• Filed: 09/28/2016
• Published: 03/29/2018
• Est. Priority Date: 09/28/2016
• Status: Active Grant

• Current Assignee: Amazon Technologies, Inc. (Amazon.com, Inc.)
• Original Assignee: Amazon Technologies, Inc. (Amazon.com, Inc.)
• Inventors: Atta, Islam, Pettey, Christopher Joseph, Khan, Asif, Johnson, Robert Michael, Davis, Mark Bradley, Izenberg, Erez, Bshara, Nafea, Constantinides, Kypros
• Granted Patent: US 10,223,317 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 13/4068 Electrical coupling
• CPC Class Codes: G06F 13/4282 on a serial bus, e.g. I2C bus, SPI bus on daisy chain buses G06F13/4247
• CPC Class Codes: G06F 15/7867 with reconfigurable architecture
• CPC Class Codes: G06F 15/7871 Reconfiguration support, e.g. configuration loading, configuration switching, or hardware OS
• CPC Class Codes: G06F 9/44505 Configuring for program initiating, e.g. using registry, configuration files

Abstract

The following description is directed to a configurable logic platform. In one example, a configurable logic platform includes host logic and a reconfigurable logic region. The reconfigurable logic region can include logic blocks that are configurable to implement application logic. The host logic can be used for encapsulating the reconfigurable logic region. The host logic can include a host interface for communicating with a processor. The host logic can include a management function accessible via the host interface. The management function can be adapted to cause the reconfigurable logic region to be configured with the application logic in response to an authorized request from the host interface. The host logic can include a data path function accessible via the host interface. The data path function can include a layer for formatting data transfers between the host interface and the application logic.

Claims

1. A configurable logic platform, the configurable logic platform comprising:

a physical interconnect for connecting the configurable logic platform to a processor;

a reconfigurable logic region comprising logic blocks that are configured based on configuration data;

a configuration port for applying the configuration data to the reconfigurable logic region so that the reconfigurable logic region is configured based on configuration data;

a control plane function accessible via transactions of the physical interconnect, the control plane function in communication with the configuration port, the control plane function providing only restricted access to the configuration port from the physical interconnect; and

a data plane function accessible via transactions of the physical interconnect, the data plane function providing an interface to the reconfigurable logic region which allows information to be transmitted over the physical interconnect and prevents the reconfigurable logic region from directly accessing the physical interconnect.

2. The configurable logic platform of claim 1, wherein providing only restricted access to the configuration port comprises only allowing transactions comprising an address within a first address range to access the configuration port.

3. The configurable logic platform of claim 1, wherein the physical interconnect is Peripheral Component Interconnect Express and the control plane function and the data plane function are physical functions.

4. The configurable logic platform of claim 1, wherein the data plane function is adapted to format all transactions originating from the reconfigurable logic region so that the reconfigurable logic region cannot generate transactions having addresses outside of one or more address ranges and the reconfigurable logic region cannot generate malformed transactions on the physical interconnect.

5. The configurable logic platform of claim 1, further comprising mailbox logic adapted to pass messages between the data plane function and the control plane function.

6. An apparatus comprising:

a reconfigurable logic region comprising hardware that is configurable to implement application logic; and

host logic for encapsulating the reconfigurable logic region, the host logic comprising;

a host interface for communicating with a processor;

a management function accessible via the host interface, the management function adapted to cause the reconfigurable logic region to be configured with the application logic in response to an authorized transaction received at the host interface; and

a data path function accessible via the host interface, the data path function comprising a layer for formatting data transfers between the host interface and the application logic.

7. The apparatus of claim 6, wherein causing the reconfigurable logic region to be configured with the application logic comprises accessing a configuration port of the apparatus.

8. The apparatus of claim 6, wherein an authorized transaction received at the host interface comprises an address within an address range assigned to the management function.

9. The apparatus of claim 6, wherein at least a portion of the host logic is static logic that is loaded on the apparatus in response to a reset of the apparatus being deasserted.

10. The apparatus of claim 6, wherein at least a portion of the host logic is reconfigurable logic that is loaded on the apparatus in response to an authorized transaction received at the host interface.

11. The apparatus of claim 6, wherein the host logic further comprises a translation layer between the application logic and a public peripheral, the translation layer adapted to format data transfers between the application logic and logic of the apparatus used for communicating with the public peripheral.

12. The apparatus of claim 11, wherein the public peripheral is a field programmable gate array and the logic includes a serializer-deserializer transceiver.

13. The apparatus of claim 6, wherein the host logic further comprises an interface to a private peripheral, the private peripheral being inaccessible to the application logic and the data path function.

14. The apparatus of claim 6, wherein the host logic further comprises mailbox logic for passing messages between the management function and the data path function.

15. A method for operating a configurable hardware platform comprising reconfigurable logic and a host interface, the method comprising:

loading host logic on a first region of the reconfigurable logic so that the configurable hardware platform performs operations of the host logic, the host logic including a control plane function enforcing restricted access for transactions from the host interface;

at the host interface, receiving a first transaction for causing application logic to be loaded on a second region of the reconfigurable logic;

configuring the second region of the reconfigurable logic to perform operations of the application logic only when the first transaction satisfies access criteria of the control plane function; and

transmitting information from the application logic over the host interface using a translation layer of the host logic so that the application logic is restricted in its use of the host interface.

16. The method of claim 15, wherein loading host logic on a first region of reconfigurable logic comprises:

receiving a second transaction on the host interface, the second transaction for causing the reconfigurable host logic to be loaded on at least a portion of the first region of reconfigurable logic; and

configuring the configurable hardware platform to perform operations of the reconfigurable host logic only when the second transaction satisfies access criteria of the control plane function.

17. The method of claim 15, wherein loading host logic on the configurable hardware platform comprises loading static host logic from a memory of the configurable hardware platform in response to a power event.

18. The method of claim 15, wherein restricting the application logic in its use of the host interface comprises using the translation layer to format all transactions originating at the application logic and destined for the host interface.

19. The method of claim 15, further comprising:

using the host logic to format transactions originating at the application logic and destined for a peripheral in communication with the configurable hardware platform.

20. The method of claim 15, further comprising:

using the host logic to monitor and analyze transactions originating at the application logic and reject transactions matching predefined criteria before the rejected transactions are transmitted on the host interface.