//
// Copyright (c) 2009 Advanced Micro Devices, Inc. All rights reserved.
//
#include "cl_common.hpp"
#include "cl_kernel_info_amd.h"
#include "platform/kernel.hpp"
#include "platform/ndrange.hpp"
#include "platform/command.hpp"

/*! \addtogroup API
 *  @{
 *
 *  \addtogroup AMD_Extensions
 *  @{
 *
 */

/*! \brief Retrieves the kernel information.
 *
 *  \param kernel specifies the kernel object being queried.
 *
 *  \param device identifies a specific device in the list of devices associated
 *  with \a kernel. The list of devices is the list of devices in the OpenCL
 *  context that is associated with \a kernel. If the list of devices associated
 *  with kernel is a single device, \a device can be a NULL value.
 *
 *  \param param_name specifies the information to query.
 *
 *  \param param_value is a pointer to memory where the appropriate result
 *  being queried is returned. If \a param_value is NULL, it is ignored.
 *
 *  \param param_value_size is used to specify the size in bytes of memory
 *  pointed to by \a param_value. This size must be >= size of return type.
 *
 *  \param param_value_size_ret returns the actual size in bytes of data copied
 *  to \a param_value. If \a param_value_size_ret is NULL, it is ignored.
 *
 *  \return One of the following values:
 *  - CL_SUCCESS if the function is executed successfully
 *  - CL_INVALID_VALUE if \a param_name is not valid, or if size in bytes
 *    specified by \a param_value_size is < size of return type and
 *    \a param_value is not NULL
 *  - CL_INVALID_KERNEL if \a kernel is a not a valid program object
 */
RUNTIME_ENTRY(cl_int, clGetKernelInfoAMD,
              (cl_kernel kernel, cl_device_id device, cl_kernel_info_amd param_name,
               size_t param_value_size, void* param_value, size_t* param_value_size_ret)) {
  // Check if we have a valid device
  if (!is_valid(device)) {
    return CL_INVALID_DEVICE;
  }

  // Check if we have a valid performance counter
  if (!is_valid(kernel)) {
    return CL_INVALID_KERNEL;
  }

  // Find the kernel, associated with the specified device
  const device::Kernel* devKernel = as_amd(kernel)->getDeviceKernel(*as_amd(device));

  // Make sure we found a valid kernel
  if (devKernel == NULL) {
    return CL_INVALID_KERNEL;
  }

  // Get the corresponded parameters
  switch (param_name) {
    case CL_KERNELINFO_SCRATCH_REGS:
      return amd::clGetInfo(devKernel->workGroupInfo()->scratchRegs_, param_value_size, param_value,
                            param_value_size_ret);
    case CL_KERNELINFO_WAVEFRONT_PER_SIMD:
      return amd::clGetInfo(devKernel->workGroupInfo()->wavefrontPerSIMD_, param_value_size,
                            param_value, param_value_size_ret);
    case CL_KERNELINFO_WAVEFRONT_SIZE:
      return amd::clGetInfo(devKernel->workGroupInfo()->wavefrontSize_, param_value_size,
                            param_value, param_value_size_ret);
    case CL_KERNELINFO_AVAILABLE_GPRS:
      return amd::clGetInfo(devKernel->workGroupInfo()->availableGPRs_, param_value_size,
                            param_value, param_value_size_ret);
    case CL_KERNELINFO_USED_GPRS:
      return amd::clGetInfo(devKernel->workGroupInfo()->usedGPRs_, param_value_size, param_value,
                            param_value_size_ret);
    case CL_KERNELINFO_AVAILABLE_SGPRS:
      return amd::clGetInfo(devKernel->workGroupInfo()->availableSGPRs_, param_value_size,
                            param_value, param_value_size_ret);
    case CL_KERNELINFO_USED_SGPRS:
      return amd::clGetInfo(devKernel->workGroupInfo()->usedSGPRs_, param_value_size, param_value,
                            param_value_size_ret);
    case CL_KERNELINFO_AVAILABLE_VGPRS:
      return amd::clGetInfo(devKernel->workGroupInfo()->availableVGPRs_, param_value_size,
                            param_value, param_value_size_ret);
    case CL_KERNELINFO_USED_VGPRS:
      return amd::clGetInfo(devKernel->workGroupInfo()->usedVGPRs_, param_value_size, param_value,
                            param_value_size_ret);
    case CL_KERNELINFO_AVAILABLE_LDS_SIZE:
      return amd::clGetInfo(devKernel->workGroupInfo()->availableLDSSize_, param_value_size,
                            param_value, param_value_size_ret);
    case CL_KERNELINFO_USED_LDS_SIZE:
      return amd::clGetInfo(devKernel->workGroupInfo()->usedLDSSize_, param_value_size, param_value,
                            param_value_size_ret);
    case CL_KERNELINFO_AVAILABLE_STACK_SIZE:
      return amd::clGetInfo(devKernel->workGroupInfo()->availableStackSize_, param_value_size,
                            param_value, param_value_size_ret);
    case CL_KERNELINFO_USED_STACK_SIZE:
      return amd::clGetInfo(devKernel->workGroupInfo()->usedStackSize_, param_value_size,
                            param_value, param_value_size_ret);
    default:
      return CL_INVALID_VALUE;
  }

  return CL_SUCCESS;
}
RUNTIME_EXIT

/*! @}
 *  @}
 */