SWDEV-209060 - Create the Skeleton RDC CLI and daemon

Create the skeleton implementation of rdc_client.so and rdci. Modify current rdcd to
integrate the RDC API service:

rdc.proto is changed to add a new RdcAPI service which defined the interfaces for the RDC API.

RdcStandaloneHandler.cpp is added to send the request using gRPC to the rdcd. It is built into
the rdc_client.so

rdci.cc, RdciDisCoverySubSystem.cc and RdciSubSystem.cc are added to implement skeleton rdci.
Currently, the discovery subsystem is supported.

rdc_api_service.cc is added to the server as a skeleton to implement the RdcAPI service. Currently,
only discovery API is implemented. Note: we disabled the rdc_rsmi_service, which will be removed
in the future. The original rdc_client.so is renamed to rdc_client_smi.so which should also be
removed in the future.

Add the instruction how to run the rdcd and rdci in the build folder in the README.md.

Change-Id: Id232f9f83787e5812d4a295dc8cf0daa7728b06c

server/include/rdc/rdc_api_service.h

@@ -0,0 +1,53 @@
+/*
+Copyright (c) 2020 - present Advanced Micro Devices, Inc. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+#ifndef SERVER_INCLUDE_RDC_RDC_API_SERVICE_H_
+#define SERVER_INCLUDE_RDC_RDC_API_SERVICE_H_
+
+#include "rdc.grpc.pb.h"  // NOLINT
+#include "rdc/rdc.h"
+
+namespace amd {
+namespace rdc {
+
+class RdcAPIServiceImpl final : public ::rdc::RdcAPI::Service {
+ public:
+    RdcAPIServiceImpl();
+    ~RdcAPIServiceImpl();
+
+    rdc_status_t Initialize(uint64_t rdcd_init_flags = 0);
+
+    ::grpc::Status GetAllDevices(::grpc::ServerContext* context,
+                  const ::rdc::Empty* request,
+                  ::rdc::GetAllDevicesResponse* reply) override;
+
+    ::grpc::Status GetDeviceAttributes(::grpc::ServerContext* context,
+                  const ::rdc::GetDeviceAttributesRequest* request,
+                  ::rdc::GetDeviceAttributesResponse* reply) override;
+
+ private:
+    rdc_handle_t rdc_handle_;
+};
+
+}  // namespace rdc
+}  // namespace amd
+
+#endif  // SERVER_INCLUDE_RDC_RDC_API_SERVICE_H_

server/include/rdc/rdc_server_main.h

@@ -29,6 +29,7 @@ THE SOFTWARE.
 
 #include "rdc/rdc_rsmi_service.h"
 #include "rdc/rdc_admin_service.h"
+#include "rdc/rdc_api_service.h"
 
 class RDCServer {
  public:
@@ -45,6 +46,9 @@ class RDCServer {
     bool start_rdc_admin_service(void) const {return start_rdc_admin_service_;}
     void set_start_rdc_admin_service(bool s) {start_rdc_admin_service_ = s;}
 
+    bool start_api_service(void) const {return start_api_service_;}
+    void set_start_api_service(bool s) {start_api_service_ = s;}
+
     void ShutDown(void);
 
  private:
@@ -57,6 +61,9 @@ class RDCServer {
 
     bool start_rdc_admin_service_;
     amd::rdc::RDCAdminServiceImpl *rdc_admin_service_;
+
+    bool start_api_service_;
+    amd::rdc::RdcAPIServiceImpl *api_service_;
 };
 
 #endif  // SERVER_INCLUDE_RDC_RDC_SERVER_MAIN_H_