Add new init and destroy API for RAS library.

RAS library will provide two new APIs:
rdc_status_t rdc_module_init(uint64_t flags);
rdc_status_t rdc_module_destroy();

When RDC load the librdc_ras.so, it will call rdc_module_init().
When RDC exit, it will call rdc_module_destroy()

Change-Id: I7f5c81fd19a45a906c3c339cd6eabee2277f27ca

include/rdc_lib/impl/RdcRasLib.h

@@ -53,11 +53,16 @@ class RdcRasLib: public RdcTelemetry {
 
     explicit RdcRasLib(const char* lib_name);
 
+    ~RdcRasLib();
+
  private:
     RdcLibraryLoader lib_loader_;
     rdc_status_t (*fields_value_get_)(rdc_gpu_field_t*,
                 uint32_t, rdc_field_value_f, void*);
     rdc_status_t (*fields_query_)(uint32_t[MAX_NUM_FIELDS], uint32_t*);
+
+    rdc_status_t (*rdc_module_init_)(uint64_t);
+    rdc_status_t (*rdc_module_destroy_)();
 };
 typedef std::shared_ptr<RdcRasLib> RdcRasLibPtr;
 

rdc_libs/rdc/src/RdcRasLib.cc

@@ -27,14 +27,36 @@ THE SOFTWARE.
 namespace amd {
 namespace rdc {
 
-RdcRasLib::RdcRasLib(const char* lib_name) {
+RdcRasLib::RdcRasLib(const char* lib_name):
+    fields_value_get_(nullptr)
+    , fields_query_(nullptr)
+    , rdc_module_init_(nullptr)
+    , rdc_module_destroy_(nullptr) {
     rdc_status_t status = lib_loader_.load(lib_name);
     if (status != RDC_ST_OK) {
-        fields_value_get_ = nullptr;
-        fields_query_ = nullptr;
         return;
     }
 
+    status = lib_loader_.load_symbol(&rdc_module_init_,
+                "rdc_module_init");
+    if (status != RDC_ST_OK) {
+        rdc_module_init_ = nullptr;
+        return;
+    }
+
+    if (rdc_module_init_(0) != RDC_ST_OK) {
+        RDC_LOG(RDC_ERROR, "Fail to init librdc_ras.so:"
+                    << rdc_status_string(status));
+         return;
+    }
+
+
+    status = lib_loader_.load_symbol(&rdc_module_destroy_,
+                "rdc_module_destroy");
+    if (status != RDC_ST_OK) {
+        rdc_module_destroy_ = nullptr;
+    }
+
     status = lib_loader_.load_symbol(&fields_value_get_,
                 "rdc_telemetry_fields_value_get");
     if (status != RDC_ST_OK) {
@@ -47,6 +69,12 @@ RdcRasLib::RdcRasLib(const char* lib_name) {
     }
 }
 
+RdcRasLib::~RdcRasLib() {
+    if (rdc_module_destroy_) {
+        rdc_module_destroy_();
+    }
+}
+
 rdc_status_t RdcRasLib::rdc_telemetry_fields_query(
     uint32_t field_ids[MAX_NUM_FIELDS], uint32_t* field_count) {
     if (field_count == nullptr) {