Merge branch 'origin/pghafari/vdi-prototype' into lmoriche/amd-master

Change-Id: Id3b833d405596735becb3346f3b08c6da57033fe


[ROCm/clr commit: 20c7173849]

projects/clr/rocclr/device/gpu/gpuconstbuf.hpp

@@ -0,0 +1,67 @@
+//
+// Copyright (c) 2010 Advanced Micro Devices, Inc. All rights reserved.
+//
+
+#ifndef GPUCONSTBUF_HPP_
+#define GPUCONSTBUF_HPP_
+
+#include "device/gpu/gpumemory.hpp"
+
+//! \namespace gpu GPU Resource Implementation
+namespace gpu {
+
+//! Cconstant buffer
+class ConstBuffer : public Memory {
+ public:
+  //! Vector size of the constant buffer
+  static const size_t VectorSize = 16;
+
+  //! Constructor for the ConstBuffer class
+  ConstBuffer(VirtualGPU& gpu,  //!< Virtual GPU device object
+              size_t size       //!< size of the constant buffer in vectors
+              );
+
+  //! Destructor for the ConstBuffer class
+  ~ConstBuffer();
+
+  //! Creates the real HW constant buffer
+  bool create();
+
+  /*! \brief Uploads current constant buffer data from sysMemCopy_ to HW
+   *
+   *  \return True if the data upload was succesful
+   */
+  bool uploadDataToHw(size_t size  //!< real data size for upload
+                      );
+
+  //! Returns a pointer to the system memory copy for CB
+  address sysMemCopy() const { return sysMemCopy_; }
+
+  //! Returns CB size
+  size_t size() const { return size_; }
+
+  //! Returns current write offset for the constant buffer
+  size_t wrtOffset() const { return wrtOffset_; }
+
+  //! Returns last write size for the constant buffer
+  size_t lastWrtSize() const { return lastWrtSize_; }
+
+ private:
+  //! Disable copy constructor
+  ConstBuffer(const ConstBuffer&);
+
+  //! Disable operator=
+  ConstBuffer& operator=(const ConstBuffer&);
+
+  VirtualGPU& gpu_;     //!< Virtual GPU object
+  address sysMemCopy_;  //!< System memory copy
+  size_t size_;         //!< Constant buffer size
+  size_t wrtOffset_;    //!< Current write offset
+  size_t lastWrtSize_;  //!< Last write size
+  void* wrtAddress_;    //!< Write address in CB
+};
+
+
+/*@}*/} // namespace gpu
+
+#endif /*GPUCONSTBUF_HPP_*/