Added query of hipDeviceAttributeHdpMemFlushCntl and hipDeviceAttribu… (#1238)

* Added query of hipDeviceAttributeHdpMemFlushCntl and hipDeviceAttributeHdpRegFlushCntl

* Added NVCC blocker for the hip*FlushCntl test cases

src/hip_device.cpp

@@ -293,6 +293,17 @@ hipError_t ihipDeviceGetAttribute(int* pi, hipDeviceAttribute_t attr, int device
                 break;
             case hipDeviceAttributeMaxTexture3DDepth:
                 *pi = prop->maxTexture3D[2];
+            case hipDeviceAttributeHdpMemFlushCntl:
+                {
+                    uint32_t** hdp = reinterpret_cast<uint32_t**>(pi);
+                    *hdp = prop->hdpMemFlushCntl;
+                }
+                break;
+            case hipDeviceAttributeHdpRegFlushCntl:
+                {
+                    uint32_t** hdp = reinterpret_cast<uint32_t**>(pi);
+                    *hdp = prop->hdpRegFlushCntl;
+                }
                 break;
             default:
                 e = hipErrorInvalidValue;

src/hip_hcc.cpp

@@ -915,6 +915,15 @@ hipError_t ihipDevice_t::initProperties(hipDeviceProp_t* prop) {
     err = hsa_agent_get_info(_hsaAgent, (hsa_agent_info_t)HSA_EXT_AGENT_INFO_IMAGE_3D_MAX_ELEMENTS,
           prop->maxTexture3D);
     DeviceErrorCheck(err);
+
+    // Get Agent HDP Flush Register Memory
+    hsa_amd_hdp_flush_t hdpinfo;
+    err = hsa_agent_get_info(_hsaAgent, (hsa_agent_info_t)HSA_AMD_AGENT_INFO_HDP_FLUSH, &hdpinfo);
+    DeviceErrorCheck(err);
+
+    prop->hdpMemFlushCntl = hdpinfo.HDP_MEM_FLUSH_CNTL;
+    prop->hdpRegFlushCntl = hdpinfo.HDP_REG_FLUSH_CNTL;
+
     return e;
 }