/*
 * Copyright (c) Advanced Micro Devices, Inc., or its affiliates.
 *
 * SPDX-License-Identifier: MIT
 */

/*
This testfile verifies Built fmin API scenarios
1. Builtin fmin on Coherent Memory with memory type as global
2. Builtin fmin on Non-Coherent Memory with memory type as global
3. Builtin fmin with memory type as flat
4. Builtin fmin on Coherent Memory with RTC and memory type as global
5. Builtin fmin on Non-Coherent Memory with RTC and memory type as global
6. Builtin fmin with RTC and memory type as flat
*/

#include <hip_test_checkers.hh>
#include <string>
#include <hip_test_common.hh>
#include <hip/hiprtc.h>

#define INITIAL_VAL 5

static constexpr auto fminFlatMem{
    R"(
extern "C"
__global__ void unsafeAtomicMin_FlatMem(double* addr, double* result) {
  __shared__ double int_val;
  int_val = 5;
  double comp = 10;
  *result = unsafeAtomicMin(&int_val, comp);
  *addr = int_val;
}
)"};

static constexpr auto fminGlobalMem{
    R"(
extern "C"
__global__ void unsafeAtomicMin_GlobalMem(double* addr, double* result) {
  double comp = 10;
  *result = unsafeAtomicMin(addr, comp);
}
)"};

__global__ void unsafeAtomicMin_FlatMem(double* addr, double* result) {
  __shared__ double int_val;
  int_val = 5;
  double comp = 10;
  *result = unsafeAtomicMin(&int_val, comp);
  *addr = int_val;
}
__global__ void unsafeAtomicMin_GlobalMem(double* addr, double* result) {
  double comp = 10;
  *result = unsafeAtomicMin(addr, comp);
}

/*
This testcase verifies the builtinAtomic fmin API on Coherent memory
with memory type as global
Input: A_h with INITIAL_VAL
Output: Return val would be 0 and the input value to API will not
        get updated. A_h would be INITIAL_VAL, B_h is 0
*/
HIP_TEST_CASE(Unit_BuiltinAtomics_fminCoherentGlobalMem) {
  hipDeviceProp_t prop;
  int device;
  HIP_CHECK(hipGetDevice(&device));
  HIP_CHECK(hipGetDeviceProperties(&prop, device));
  std::string gfxName(prop.gcnArchName);
  if ((gfxName == "gfx90a" || gfxName.find("gfx90a:")) == 0) {
    if (prop.canMapHostMemory != 1) {
      HIP_SKIP_TEST(HipTest::SkipReason::kHostPinnedMemoryUnsupported);
    } else {
      double *A_h, *B_h;
      double* A_d;
      double* result;
      HIP_CHECK(
          hipHostMalloc(reinterpret_cast<void**>(&A_h), sizeof(double), hipHostMallocCoherent));
      A_h[0] = INITIAL_VAL;
      HIP_CHECK(hipHostGetDevicePointer(reinterpret_cast<void**>(&A_d), A_h, 0));
      B_h = reinterpret_cast<double*>(malloc(sizeof(double)));
      HIP_CHECK(hipMalloc(reinterpret_cast<void**>(&result), sizeof(double)));
      hipLaunchKernelGGL(unsafeAtomicMin_GlobalMem, dim3(1), dim3(1), 0, 0,
                         static_cast<double*>(A_d), result);
      HIP_CHECK(hipGetLastError());
      HIP_CHECK(hipDeviceSynchronize());
      HIP_CHECK(hipMemcpy(B_h, result, sizeof(double), hipMemcpyDeviceToHost));
      REQUIRE(*B_h == 0);
      REQUIRE(A_h[0] == INITIAL_VAL);
      HIP_CHECK(hipHostFree(A_h));
      HIP_CHECK(hipFree(result));
      free(B_h);
    }
  } else {
    {
      std::string const skip_gfx_msg = std::string(
          "Memory model feature is only supported for gfx90a, Hence"
          "skipping the testcase for this GPU ") +
          std::to_string(device);
      HIP_SKIP_TEST(skip_gfx_msg.c_str());
    }
  }
}

/*
This testcase verifies the builtinAtomic fmin API
1. Non Coherent memory with memory type as global
2. Memory type as flat
Input: A_h with INITIAL_VAL
Output: Return val would be initial val of A_h and the input value of
        API would be updated with the min value
        A_h would be INITIAL_VAL, B_h would be INITIAL_VAL
*/
HIP_TEST_CASE(Unit_BuiltinAtomics_fminNonCoherentGlobalFlatMem) {
  auto mem_type = GENERATE(0, 1);
  hipDeviceProp_t prop;
  int device;
  HIP_CHECK(hipGetDevice(&device));
  HIP_CHECK(hipGetDeviceProperties(&prop, device));
  std::string gfxName(prop.gcnArchName);
  if ((gfxName == "gfx90a" || gfxName.find("gfx90a:")) == 0) {
    if (prop.canMapHostMemory != 1) {
      HIP_SKIP_TEST(HipTest::SkipReason::kHostPinnedMemoryUnsupported);
    } else {
      double *A_h, *B_h;
      double* A_d;
      double* result;
      HIP_CHECK(
          hipHostMalloc(reinterpret_cast<void**>(&A_h), sizeof(double), hipHostMallocNonCoherent));
      A_h[0] = INITIAL_VAL;
      HIP_CHECK(hipHostGetDevicePointer(reinterpret_cast<void**>(&A_d), A_h, 0));
      B_h = reinterpret_cast<double*>(malloc(sizeof(double)));
      HIP_CHECK(hipMalloc(reinterpret_cast<void**>(&result), sizeof(double)));
      if (mem_type) {
        hipLaunchKernelGGL(unsafeAtomicMin_GlobalMem, dim3(1), dim3(1), 0, 0,
                           static_cast<double*>(A_d), result);
        HIP_CHECK(hipGetLastError());
      } else {
        hipLaunchKernelGGL(unsafeAtomicMin_FlatMem, dim3(1), dim3(1), 0, 0,
                           static_cast<double*>(A_d), result);
        HIP_CHECK(hipGetLastError());
      }
      HIP_CHECK(hipDeviceSynchronize());
      HIP_CHECK(hipMemcpy(B_h, result, sizeof(double), hipMemcpyDeviceToHost));
      REQUIRE(*B_h == INITIAL_VAL);
      REQUIRE(A_h[0] == INITIAL_VAL);
      HIP_CHECK(hipHostFree(A_h));
      HIP_CHECK(hipFree(result));
      free(B_h);
    }
  } else {
    {
      std::string const skip_gfx_msg = std::string(
          "Memory model feature is only supported for gfx90a, Hence"
          "skipping the testcase for this GPU ") +
          std::to_string(device);
      HIP_SKIP_TEST(skip_gfx_msg.c_str());
    }
  }
}
/*
This testcase verifies the builtinAtomic fmin API on Coherent memory
with RTC and memory type as global
Input: A_h with INITIAL_VAL
Output: Return val would be 0 and the input value to API will not
        get updated. A_h would be INITIAL_VAL, B_h is 0
*/

HIP_TEST_CASE(Unit_BuiltinAtomicsRTC__fminCoherentGlobalMem) {
  hipDeviceProp_t prop;
  int device;
  HIP_CHECK(hipGetDevice(&device));
  HIP_CHECK(hipGetDeviceProperties(&prop, device));
  std::string gfxName(prop.gcnArchName);
  if ((gfxName == "gfx90a" || gfxName.find("gfx90a:")) == 0) {
    if (prop.canMapHostMemory != 1) {
      HIP_SKIP_TEST(HipTest::SkipReason::kHostPinnedMemoryUnsupported);
    } else {
      hiprtcProgram prog;
      hiprtcCreateProgram(&prog,          // prog
                          fminGlobalMem,  // buffer
                          "kernel.cu",    // name
                          0, nullptr, nullptr);
      std::string sarg = std::string("--gpu-architecture=") + prop.gcnArchName;
      const char* options[] = {sarg.c_str()};
      hiprtcResult compileResult{hiprtcCompileProgram(prog, 1, options)};

      size_t logSize;
      HIPRTC_CHECK(hiprtcGetProgramLogSize(prog, &logSize));
      if (logSize) {
        std::string log(logSize, '\0');
        HIPRTC_CHECK(hiprtcGetProgramLog(prog, &log[0]));
        INFO(log);
      }

      REQUIRE(compileResult == HIPRTC_SUCCESS);
      size_t codeSize;
      HIPRTC_CHECK(hiprtcGetCodeSize(prog, &codeSize));

      std::vector<char> code(codeSize);
      HIPRTC_CHECK(hiprtcGetCode(prog, code.data()));
      HIPRTC_CHECK(hiprtcDestroyProgram(&prog));

      hipModule_t module;
      hipFunction_t fmaxkernel;
      HIP_CHECK(hipModuleLoadData(&module, code.data()));
      HIP_CHECK(hipModuleGetFunction(&fmaxkernel, module, "unsafeAtomicMin_GlobalMem"));

      double *A_h, *B_h;
      double* A_d;
      double* result;
      HIP_CHECK(
          hipHostMalloc(reinterpret_cast<void**>(&A_h), sizeof(double), hipHostMallocCoherent));
      A_h[0] = INITIAL_VAL;
      HIP_CHECK(hipHostGetDevicePointer(reinterpret_cast<void**>(&A_d), A_h, 0));
      B_h = reinterpret_cast<double*>(malloc(sizeof(double)));
      HIP_CHECK(hipMalloc(reinterpret_cast<void**>(&result), sizeof(double)));
      struct {
        double* p;
        double* res;
      } args_f{A_d, result};
      auto size = sizeof(args_f);
      void* config_d[] = {HIP_LAUNCH_PARAM_BUFFER_POINTER, &args_f, HIP_LAUNCH_PARAM_BUFFER_SIZE,
                          &size, HIP_LAUNCH_PARAM_END};
      HIP_CHECK(hipModuleLaunchKernel(fmaxkernel, 1, 1, 1, 1, 1, 1, 0, nullptr, nullptr, config_d));
      HIP_CHECK(hipDeviceSynchronize());
      HIP_CHECK(hipMemcpy(B_h, result, sizeof(double), hipMemcpyDeviceToHost));
      REQUIRE(*B_h == 0);
      REQUIRE(A_h[0] == INITIAL_VAL);
      HIP_CHECK(hipHostFree(A_h));
      HIP_CHECK(hipFree(result));
      free(B_h);
    }
  } else {
    {
      std::string const skip_gfx_msg = std::string(
          "Memory model feature is only supported for gfx90a, Hence"
          "skipping the testcase for this GPU ") +
          std::to_string(device);
      HIP_SKIP_TEST(skip_gfx_msg.c_str());
    }
  }
}

/*
This testcase verifies the builtinAtomic fmin API with RTC
1. Non Coherent memory with memory type as global
2. Memory type as flat
Input: A_h with INITIAL_VAL
Output: Return val would be initial val of A_h and the input value of
        API would be updated with the max value
        A_h would be 10, B_h would be INITIAL_VAL
*/
HIP_TEST_CASE(Unit_BuiltinAtomicsRTC_fminNonCoherentGlobalFlatMem) {
  int mem_type = GENERATE(0, 1);
  hipDeviceProp_t prop;
  int device;
  HIP_CHECK(hipGetDevice(&device));
  HIP_CHECK(hipGetDeviceProperties(&prop, device));
  std::string gfxName(prop.gcnArchName);
  if ((gfxName == "gfx90a" || gfxName.find("gfx90a:")) == 0) {
    if (prop.canMapHostMemory != 1) {
      HIP_SKIP_TEST(HipTest::SkipReason::kHostPinnedMemoryUnsupported);
    } else {
      hiprtcProgram prog;
      if (mem_type) {
        hiprtcCreateProgram(&prog,          // prog
                            fminGlobalMem,  // buffer
                            "kernel.cu",    // name
                            0, nullptr, nullptr);
      } else {
        hiprtcCreateProgram(&prog,        // prog
                            fminFlatMem,  // buffer
                            "kernel.cu",  // name
                            0, nullptr, nullptr);
      }
      std::string sarg = std::string("--gpu-architecture=") + prop.gcnArchName;
      const char* options[] = {sarg.c_str()};
      hiprtcResult compileResult{hiprtcCompileProgram(prog, 1, options)};

      size_t logSize;
      HIPRTC_CHECK(hiprtcGetProgramLogSize(prog, &logSize));
      if (logSize) {
        std::string log(logSize, '\0');
        HIPRTC_CHECK(hiprtcGetProgramLog(prog, &log[0]));
        INFO(log);
      }

      REQUIRE(compileResult == HIPRTC_SUCCESS);
      size_t codeSize;
      HIPRTC_CHECK(hiprtcGetCodeSize(prog, &codeSize));

      std::vector<char> code(codeSize);
      HIPRTC_CHECK(hiprtcGetCode(prog, code.data()));
      HIPRTC_CHECK(hiprtcDestroyProgram(&prog));

      hipModule_t module;
      hipFunction_t fmaxkernel;
      HIP_CHECK(hipModuleLoadData(&module, code.data()));
      if (mem_type) {
        HIP_CHECK(hipModuleGetFunction(&fmaxkernel, module, "unsafeAtomicMin_GlobalMem"));
      } else {
        HIP_CHECK(hipModuleGetFunction(&fmaxkernel, module, "unsafeAtomicMin_FlatMem"));
      }

      double *A_h, *B_h;
      double* A_d;
      double* result;
      HIP_CHECK(
          hipHostMalloc(reinterpret_cast<void**>(&A_h), sizeof(double), hipHostMallocNonCoherent));
      A_h[0] = INITIAL_VAL;
      HIP_CHECK(hipHostGetDevicePointer(reinterpret_cast<void**>(&A_d), A_h, 0));
      B_h = reinterpret_cast<double*>(malloc(sizeof(double)));
      HIP_CHECK(hipMalloc(reinterpret_cast<void**>(&result), sizeof(double)));
      struct {
        double* p;
        double* res;
      } args_f{A_d, result};
      auto size = sizeof(args_f);
      void* config_d[] = {HIP_LAUNCH_PARAM_BUFFER_POINTER, &args_f, HIP_LAUNCH_PARAM_BUFFER_SIZE,
                          &size, HIP_LAUNCH_PARAM_END};
      HIP_CHECK(hipModuleLaunchKernel(fmaxkernel, 1, 1, 1, 1, 1, 1, 0, nullptr, nullptr, config_d));
      HIP_CHECK(hipDeviceSynchronize());
      HIP_CHECK(hipMemcpy(B_h, result, sizeof(double), hipMemcpyDeviceToHost));
      REQUIRE(*B_h == INITIAL_VAL);
      REQUIRE(A_h[0] == INITIAL_VAL);
      HIP_CHECK(hipHostFree(A_h));
      HIP_CHECK(hipFree(result));
      free(B_h);
    }
  } else {
    {
      std::string const skip_gfx_msg = std::string(
          "Memory model feature is only supported for gfx90a, Hence"
          "skipping the testcase for this GPU ") +
          std::to_string(device);
      HIP_SKIP_TEST(skip_gfx_msg.c_str());
    }
  }
}