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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANNTY OF ANY KIND, EXPRESS OR
IMPLIED, INNCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANNY CLAIM, DAMAGES OR OTHER
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THE SOFTWARE.
*/

/*
This testcase verifies the Basic scenario
1. H2D-KernelLaunch-D2H then D2D-KernelLaunch-D2H in peer GPU
*/

#include <hip_test_common.hh>
#include <hip_test_kernels.hh>
#include <hip_test_checkers.hh>

static constexpr auto NUM_ELM{1024};

/*
This testcase verifies hipMemcpyDtoDAsync API
1.Initializes device variables
2.Launches kernel and performs the sum of device variables
3.Copies the result to host variable and validates the result.
4.Sets the peer device
5.D2D copy from GPU-0 to GPU-1
6.Kernel Launch
7.DtoH copy and validating the result
*/

TEMPLATE_TEST_CASE("Unit_hipMemcpyDtoDAsync_Basic", "",
                   int, float, double) {
  size_t Nbytes = NUM_ELM * sizeof(TestType);
  int numDevices = 0;
  TestType *A_d{nullptr}, *B_d{nullptr}, *C_d{nullptr},
           *X_d{nullptr}, *Y_d{nullptr}, *Z_d{nullptr};
  TestType *A_h{nullptr}, *B_h{nullptr}, *C_h{nullptr};
  hipStream_t stream;

  HIP_CHECK(hipGetDeviceCount(&numDevices));
  if (numDevices > 1) {
    int canAccessPeer = 0;
    HIP_CHECK(hipDeviceCanAccessPeer(&canAccessPeer, 0, 1));
    if (canAccessPeer) {
      HIP_CHECK(hipSetDevice(0));
      HipTest::initArrays<TestType>(&A_d, &B_d, &C_d, &A_h, &B_h, &C_h,
                                    NUM_ELM, false);
      HIP_CHECK(hipSetDevice(1));
      HIP_CHECK(hipMalloc(&X_d, Nbytes));
      HIP_CHECK(hipMalloc(&Y_d, Nbytes));
      HIP_CHECK(hipMalloc(&Z_d, Nbytes));

      HIP_CHECK(hipSetDevice(0));
      HIP_CHECK(hipMemcpy(A_d, A_h, Nbytes, hipMemcpyHostToDevice));
      HIP_CHECK(hipMemcpy(B_d, B_h, Nbytes, hipMemcpyHostToDevice));
      hipLaunchKernelGGL(HipTest::vectorADD, dim3(1),
                         dim3(1), 0, 0,
                         static_cast<const TestType *>(A_d),
                         static_cast<const TestType *>(B_d), C_d, NUM_ELM);
      HIP_CHECK(hipMemcpy(C_h, C_d, Nbytes, hipMemcpyDeviceToHost));
      HIP_CHECK(hipDeviceSynchronize());
      HipTest::checkVectorADD<TestType>(A_h, B_h, C_h, NUM_ELM);

      HIP_CHECK(hipSetDevice(1));
      HIP_CHECK(hipStreamCreate(&stream));
      HIP_CHECK(hipMemcpyDtoDAsync((hipDeviceptr_t)X_d, (hipDeviceptr_t)A_d,
                                   Nbytes, stream));
      HIP_CHECK(hipMemcpyDtoDAsync((hipDeviceptr_t)Y_d, (hipDeviceptr_t)B_d,
                                   Nbytes, stream));
      HIP_CHECK(hipStreamSynchronize(stream));

      hipLaunchKernelGGL(HipTest::vectorADD, dim3(1),
                         dim3(1), 0, 0,
                         static_cast<const TestType*>(X_d),
                         static_cast<const TestType*>(Y_d), Z_d, NUM_ELM);
      HIP_CHECK(hipMemcpyDtoHAsync(C_h, (hipDeviceptr_t)Z_d, Nbytes, stream));
      HIP_CHECK(hipStreamSynchronize(stream));
      HIP_CHECK(hipDeviceSynchronize());
      HipTest::checkVectorADD<TestType>(A_h, B_h, C_h, NUM_ELM);

      HipTest::freeArrays<TestType>(A_d, B_d, C_d, A_h, B_h, C_h, false);
      HIP_CHECK(hipFree(X_d));
      HIP_CHECK(hipFree(Y_d));
      HIP_CHECK(hipFree(Z_d));
    } else {
      SUCCEED("Machine does not seem to have P2P Capabilities");
    }
  }
}
