add explicit fpga context (#13318)

Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/13318

add a context to describe fpga

this will remove the need of having opencl with fpga engine

the next step is to change the opencl implementation to explicitly use the fpga context

Reviewed By: soumith

Differential Revision: D12828795

fbshipit-source-id: 0700a83672d117d7aa3d941cd39c2ae627cb6e5f

1 files changed, 3 insertions, 2 deletions

diff --git a/caffe2/proto/caffe2.proto b/caffe2/proto/caffe2.proto
index a8acd9673e..e96ac2c7ef 100644
--- a/caffe2/proto/caffe2.proto
+++ b/caffe2/proto/caffe2.proto
@@ -166,7 +166,7 @@ message Argument {
 // DeviceType that Caffe2 currently supports.
 // Note: if you add a device type, make sure you add the corresponding device
 // line in the DeviceTypeName() function in caffe2/utils/proto_utils.cc
-// and update ATen/core/DeviceType.h
+// and update c10/DeviceType.h
 enum DeviceTypeProto {
   PROTO_CPU = 0;                    // In default, we will use CPU.
   PROTO_CUDA = 1;                   // CUDA.
@@ -175,8 +175,9 @@ enum DeviceTypeProto {
   PROTO_OPENCL = 4;                 // OpenCL
   PROTO_IDEEP = 5;                  // IDEEP.
   PROTO_HIP = 6;                    // AMD HIP
+  PROTO_FPGA = 7;                   // FPGA
   // Change the following number if you add more devices in the code.
-  PROTO_COMPILE_TIME_MAX_DEVICE_TYPES = 7;
+  PROTO_COMPILE_TIME_MAX_DEVICE_TYPES = 8;
   PROTO_ONLY_FOR_TEST = 20901;   // This device type is only for test.
 }