SWDEV-311270 - Clean-up IPC path in ROCclr

- Make IPC interfaces generic between devices and rely on the IPC buffer
for attach/detach logic

Change-Id: Id3c18d122030329b7ee532bbb6317de9dd6a0bbe


[ROCm/clr commit: 9aa6f25f1c]

projects/clr/rocclr/device/pal/palresource.cpp

@@ -1,4 +1,4 @@
-/* Copyright (c) 2015 - 2021 Advanced Micro Devices, Inc.
+/* Copyright (c) 2015 - 2023 Advanced Micro Devices, Inc.
 
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
@@ -1032,7 +1032,8 @@ bool Resource::CreateIpc(CreateParams* params) {
   Pal::ExternalGpuMemoryOpenInfo gpuMemOpenInfo = {};
   Pal::ExternalResourceOpenInfo& openInfo = gpuMemOpenInfo.resourceInfo;
 
-  openInfo.hExternalResource = reinterpret_cast<amd::IpcBuffer*>(params->owner_)->Handle();
+  openInfo.hExternalResource = *reinterpret_cast<const Pal::OsExternalHandle*>(
+      reinterpret_cast<amd::IpcBuffer*>(params->owner_)->Handle());
   openInfo.flags.ntHandle = false;
 
   memRef_ = GpuMemoryReference::Create(dev(), gpuMemOpenInfo);
@@ -1336,14 +1337,6 @@ bool Resource::create(MemoryType memType, CreateParams* params, bool forceLinear
   return true;
 }
 
-// ================================================================================================
-void* Resource::ExportHandle() const {
-  Pal::GpuMemoryExportInfo exportInfo = {};
-  // Set default flags in case they are not provided by application
-  exportInfo.accessFlags = GENERIC_READ | GENERIC_WRITE;
-  Pal::OsExternalHandle handle = iMem()->ExportExternalHandle(exportInfo);
-  return reinterpret_cast<void*>(handle);
-}
 // ================================================================================================
 void Resource::free() {
   if (memRef_ == nullptr) {