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/**
 * @addtogroup hipMemMap hipMemMap
 * @{
 * @ingroup VirtualMemoryManagementTest
 * `hipError_t hipMemMap (void* ptr,
 *                        size_t size,
 *                        size_t offset,
 *                        hipMemGenericAllocationHandle_t handle,
 *                        unsigned long long flags)` -
 * Maps an allocation handle to a reserved virtual address range.
 */

#include <hip_test_common.hh>

#include "hip_vmm_common.hh"

constexpr int N = (1 << 13);
constexpr int num_buf = 3;
constexpr int initializer = 0;

/**
 Kernel to perform Square of input data.
 */
static __global__ void square_kernel(int* Buff) {
  int i = threadIdx.x + blockDim.x * blockIdx.x;
  int temp = Buff[i] * Buff[i];
  Buff[i] = temp;
}

/**
 * Test Description
 * ------------------------
 *    - Check if a physical chunk can be mapped/unmapped to same
 * vmm address range repeatedly. This test validates physical memory
 * euse using same vmm range.
 * ------------------------
 *    - unit/virtualMemoryManagement/hipMemMap.cc
 * Test requirements
 * ------------------------
 *    - HIP_VERSION >= 7.0
 */
TEST_CASE("Unit_hipMemMap_SameMemoryReuse") {
  constexpr int iterations = 20;
  size_t granularity = 0;
  size_t buffer_size = N * sizeof(int);
  CTX_CREATE();
  int deviceId = 0;
  hipDevice_t device;
  HIP_CHECK(hipDeviceGet(&device, deviceId));
  checkVMMSupported(device);
  hipMemAllocationProp prop{};

  SECTION("Memory Allocation Type as hipMemAllocationTypePinned") {
    prop.type = hipMemAllocationTypePinned;
  }

  #if HT_AMD
  SECTION("Memory Allocation Type as hipMemAllocationTypeUncached") {
    prop.type = hipMemAllocationTypeUncached;
  }
  #endif

  prop.location.type = hipMemLocationTypeDevice;
  prop.location.id = device;  // Current Devices
  HIP_CHECK(
      hipMemGetAllocationGranularity(&granularity, &prop, hipMemAllocationGranularityMinimum));
  REQUIRE(granularity > 0);
  size_t size_mem = ((granularity + buffer_size - 1) / granularity) * granularity;
  hipMemGenericAllocationHandle_t handle;
  // Allocate host memory and intialize data
  std::vector<int> A_h(N), B_h(N), C_h(N);
  // Initialize with data
  for (size_t idx = 0; idx < N; idx++) {
    A_h[idx] = idx;
    C_h[idx] = idx * idx;
  }
  // Allocate a physical memory chunk
  HIP_CHECK(hipMemCreate(&handle, size_mem, &prop, 0));
  // Allocate num_buf virtual address ranges
  void* ptrA;
  HIP_CHECK(hipMemAddressReserve(&ptrA, size_mem, 0, 0, 0));
  hipMemAccessDesc accessDesc = {};
  accessDesc.location.type = hipMemLocationTypeDevice;
  accessDesc.location.id = device;
  accessDesc.flags = hipMemAccessFlagsProtReadWrite;
  for (int i = 0; i < iterations; i++) {
    std::fill(B_h.begin(), B_h.end(), initializer);
    HIP_CHECK(hipMemMap(ptrA, size_mem, 0, handle, 0));
    // Set access to GPU 0
    HIP_CHECK(hipMemSetAccess(ptrA, size_mem, &accessDesc, 1));
    HIP_CHECK(hipMemcpyHtoD(reinterpret_cast<hipDeviceptr_t>(ptrA), A_h.data(), buffer_size));
    HIP_CHECK(hipMemcpyDtoH(B_h.data(), reinterpret_cast<hipDeviceptr_t>(ptrA), buffer_size));
    REQUIRE(true == std::equal(B_h.begin(), B_h.end(), A_h.data()));
    square_kernel<<<dim3(N / threadsPerBlk), dim3(threadsPerBlk), 0, 0>>>(
        reinterpret_cast<int*>(ptrA));
    HIP_CHECK(hipMemcpyDtoH(B_h.data(), reinterpret_cast<hipDeviceptr_t>(ptrA), buffer_size));
    HIP_CHECK(hipStreamSynchronize(0));
    REQUIRE(true == std::equal(B_h.begin(), B_h.end(), C_h.data()));
    HIP_CHECK(hipMemUnmap(ptrA, size_mem));
  }
  // Release resources
  HIP_CHECK(hipMemRelease(handle));
  HIP_CHECK(hipMemAddressFree(ptrA, size_mem));
  CTX_DESTROY();
}

/**
 * Test Description
 * ------------------------
 *    - Check if a physical chunk can be mapped/unmapped for multiple
 * vmm addresses. This test validates physical memory reuse using
 * different vmm ranges.
 * ------------------------
 *    - unit/virtualMemoryManagement/hipMemMap.cc
 * Test requirements
 * ------------------------
 *    - HIP_VERSION >= 7.0
 */
TEST_CASE("Unit_hipMemMap_PhysicalMemoryReuse_SingleGPU") {
  size_t granularity = 0;
  size_t buffer_size = N * sizeof(int);
  CTX_CREATE();
  int deviceId = 0;
  hipDevice_t device;
  HIP_CHECK(hipDeviceGet(&device, deviceId));
  checkVMMSupported(device);
  hipMemAllocationProp prop{};

  SECTION("Memory Allocation Type as hipMemAllocationTypePinned") {
    prop.type = hipMemAllocationTypePinned;
  }

  #if HT_AMD
  SECTION("Memory Allocation Type as hipMemAllocationTypeUncached") {
    prop.type = hipMemAllocationTypeUncached;
  }
  #endif

  prop.location.type = hipMemLocationTypeDevice;
  prop.location.id = device;  // Current Devices
  HIP_CHECK(
      hipMemGetAllocationGranularity(&granularity, &prop, hipMemAllocationGranularityMinimum));
  REQUIRE(granularity > 0);
  size_t size_mem = ((granularity + buffer_size - 1) / granularity) * granularity;
  hipMemGenericAllocationHandle_t handle;
  // Allocate host memory and intialize data
  std::vector<int> A_h(N), B_h(N), C_h(N);
  // Initialize with data
  for (size_t idx = 0; idx < N; idx++) {
    A_h[idx] = idx;
    C_h[idx] = idx * idx;
  }
  // Allocate a physical memory chunk
  HIP_CHECK(hipMemCreate(&handle, size_mem, &prop, 0));
  // Allocate num_buf virtual address ranges
  void* ptrA[num_buf];
  for (int buf = 0; buf < num_buf; buf++) {
    HIP_CHECK(hipMemAddressReserve(&ptrA[buf], size_mem, 0, 0, 0));
  }
  hipMemAccessDesc accessDesc = {};
  accessDesc.location.type = hipMemLocationTypeDevice;
  accessDesc.location.id = device;
  accessDesc.flags = hipMemAccessFlagsProtReadWrite;
  for (int buf = 0; buf < num_buf; buf++) {
    std::fill(B_h.begin(), B_h.end(), initializer);
    HIP_CHECK(hipMemMap(ptrA[buf], size_mem, 0, handle, 0));
    // Set access to GPU 0
    HIP_CHECK(hipMemSetAccess(ptrA[buf], size_mem, &accessDesc, 1));
    HIP_CHECK(hipMemcpyHtoD(reinterpret_cast<hipDeviceptr_t>(ptrA[buf]), A_h.data(), buffer_size));
    HIP_CHECK(hipMemcpyDtoH(B_h.data(), reinterpret_cast<hipDeviceptr_t>(ptrA[buf]), buffer_size));
    REQUIRE(true == std::equal(B_h.begin(), B_h.end(), A_h.data()));
    square_kernel<<<dim3(N / threadsPerBlk), dim3(threadsPerBlk), 0, 0>>>(
        reinterpret_cast<int*>(ptrA[buf]));
    HIP_CHECK(hipMemcpyDtoH(B_h.data(), reinterpret_cast<hipDeviceptr_t>(ptrA[buf]), buffer_size));
    HIP_CHECK(hipStreamSynchronize(0));
    REQUIRE(true == std::equal(B_h.begin(), B_h.end(), C_h.data()));
    HIP_CHECK(hipMemUnmap(ptrA[buf], size_mem));
  }
  // Release resources
  HIP_CHECK(hipMemRelease(handle));
  for (int buf = 0; buf < num_buf; buf++) {
    HIP_CHECK(hipMemAddressFree(ptrA[buf], size_mem));
  }

  CTX_DESTROY();
}

/**
 * Test Description
 * ------------------------
 *    - Check if a physical chunk can be mapped to multiple
 * vmm addresses at the same time and check data values integrity
 * between different VMMs.
 * ------------------------
 *    - unit/virtualMemoryManagement/hipMemMap.cc
 * Test requirements
 * ------------------------
 *    - HIP_VERSION >= 7.0
 */
TEST_CASE("Unit_hipMemMap_PhysicalMemory_Map2MultVMMs") {
  size_t granularity = 0;
  size_t buffer_size = N * sizeof(int);
  CTX_CREATE();
  int deviceId = 0;
  hipDevice_t device;
  HIP_CHECK(hipDeviceGet(&device, deviceId));
  checkVMMSupported(device);
  hipMemAllocationProp prop{};

  SECTION("Memory Allocation Type as hipMemAllocationTypePinned") {
    prop.type = hipMemAllocationTypePinned;
  }

  #if HT_AMD
  SECTION("Memory Allocation Type as hipMemAllocationTypeUncached") {
    prop.type = hipMemAllocationTypeUncached;
  }
  #endif

  prop.location.type = hipMemLocationTypeDevice;
  prop.location.id = device;  // Current Devices
  HIP_CHECK(
      hipMemGetAllocationGranularity(&granularity, &prop, hipMemAllocationGranularityMinimum));
  REQUIRE(granularity > 0);
  size_t size_mem = ((granularity + buffer_size - 1) / granularity) * granularity;
  hipMemGenericAllocationHandle_t handle;
  // Allocate host memory and intialize data
  std::vector<int> A_h(N), B_h(N);
  // Initialize with data
  for (size_t idx = 0; idx < N; idx++) {
    A_h[idx] = idx;
  }
  // Allocate a physical memory chunk
  HIP_CHECK(hipMemCreate(&handle, size_mem, &prop, 0));
  // Allocate num_buf virtual address ranges
  void* ptrA[num_buf];
  for (int buf = 0; buf < num_buf; buf++) {
    HIP_CHECK(hipMemAddressReserve(&ptrA[buf], size_mem, 0, 0, 0));
  }
  hipMemAccessDesc accessDesc = {};
  accessDesc.location.type = hipMemLocationTypeDevice;
  accessDesc.location.id = device;
  accessDesc.flags = hipMemAccessFlagsProtReadWrite;
  for (int buf = 0; buf < num_buf; buf++) {
    HIP_CHECK(hipMemMap(ptrA[buf], size_mem, 0, handle, 0));
  }
  // Set access for all the buffers.
  for (int buf = 0; buf < num_buf; buf++) {
    HIP_CHECK(hipMemSetAccess(ptrA[buf], size_mem, &accessDesc, 1));
  }
  // Copy data to VMM via ptrA[0]
  HIP_CHECK(hipMemcpyHtoD(reinterpret_cast<hipDeviceptr_t>(ptrA[0]), A_h.data(), buffer_size));
  // Validate the data contained in VMM using ptrA[0], ptrA[1],
  // ......, ptrA[num_buf-1]
  for (int buf = 0; buf < num_buf; buf++) {
    std::fill(B_h.begin(), B_h.end(), initializer);
    HIP_CHECK(hipMemcpyDtoH(B_h.data(), reinterpret_cast<hipDeviceptr_t>(ptrA[buf]), buffer_size));
    REQUIRE(true == std::equal(B_h.begin(), B_h.end(), A_h.data()));
  }

  for (int buf = 0; buf < num_buf; buf++) {
    HIP_CHECK(hipMemUnmap(ptrA[buf], size_mem));
  }

  // Release resources
  HIP_CHECK(hipMemRelease(handle));
  for (int buf = 0; buf < num_buf; buf++) {
    HIP_CHECK(hipMemAddressFree(ptrA[buf], size_mem));
  }

  CTX_DESTROY();
}

void physicalMemoryReuse_MultiDev (hipMemAllocationProp prop) {
  int devicecount = 0;
  HIP_CHECK(hipGetDeviceCount(&devicecount));
  if (devicecount < 2) {
    HipTest::HIP_SKIP_TEST("Machine is Single GPU. Skipping Test..");
    return;
  }
  size_t granularity = 0;
  size_t buffer_size = N * sizeof(int);
  for (int devX = 0; devX < devicecount; devX++) {
    hipDevice_t device;
    HIP_CHECK(hipDeviceGet(&device, devX));
    checkVMMSupported(device);
    prop.location.id = device;  // Current Devices
    HIP_CHECK(
        hipMemGetAllocationGranularity(&granularity, &prop, hipMemAllocationGranularityMinimum));
    REQUIRE(granularity > 0);
    size_t size_mem = ((granularity + buffer_size - 1) / granularity) * granularity;
    hipMemGenericAllocationHandle_t handle;
    // Allocate host memory and intialize data
    std::vector<int> A_h(N), B_h(N);
    // Initialize with data
    for (size_t idx = 0; idx < N; idx++) {
      A_h[idx] = idx;
    }
    // Allocate a physical memory chunk
    HIP_CHECK(hipMemCreate(&handle, size_mem, &prop, 0));
    // Allocate devicecount virtual address ranges
    std::vector<void*> ptrA(devicecount);
    for (int devY = 0; devY < devicecount; devY++) {
      HIP_CHECK(hipMemAddressReserve(&ptrA[devY], size_mem, 0, 0, 0));
    }
    for (int devY = 0; devY < devicecount; devY++) {
      hipDevice_t deviceToTest;
      HIP_CHECK(hipDeviceGet(&deviceToTest, devY));
      hipMemAccessDesc accessDesc = {};
      accessDesc.location.type = hipMemLocationTypeDevice;
      accessDesc.location.id = deviceToTest;
      accessDesc.flags = hipMemAccessFlagsProtReadWrite;
      HIP_CHECK(hipSetDevice(devY));
      std::fill(B_h.begin(), B_h.end(), initializer);
      HIP_CHECK(hipMemMap(ptrA[devY], size_mem, 0, handle, 0));
      // Set access to GPU 0
      HIP_CHECK(hipMemSetAccess(ptrA[devY], size_mem, &accessDesc, 1));
      HIP_CHECK(
          hipMemcpyHtoD(reinterpret_cast<hipDeviceptr_t>(ptrA[devY]), A_h.data(), buffer_size));
      HIP_CHECK(
          hipMemcpyDtoH(B_h.data(), reinterpret_cast<hipDeviceptr_t>(ptrA[devY]), buffer_size));
      REQUIRE(true == std::equal(B_h.begin(), B_h.end(), A_h.data()));
      HIP_CHECK(hipMemUnmap(ptrA[devY], size_mem));
    }
    HIP_CHECK(hipSetDevice(0));  // set the device back to 0.
    // Release resources
    HIP_CHECK(hipMemRelease(handle));
    for (int devY = 0; devY < devicecount; devY++) {
      HIP_CHECK(hipMemAddressFree(ptrA[devY], size_mem));
    }
  }
}
/**
 * Test Description
 * ------------------------
 *    - Check if a physical chunk can be mapped/unmapped for
 * multiple vmm addresses. This test validates physical memory
 * reuse using different vmm ranges on multiple devices.
 * ------------------------
 *    - unit/virtualMemoryManagement/hipMemMap.cc
 * Test requirements
 * ------------------------
 *    - HIP_VERSION >= 7.0
 */
TEST_CASE("Unit_hipMemMap_PhysicalMemoryReuse_MultiDev", "[multigpu]") {
  CHECK_P2P_SUPPORT
  SECTION("Memory Allocation Type as hipMemAllocationTypePinned") {
    hipMemAllocationProp prop{};
    prop.type = hipMemAllocationTypePinned;
    prop.location.type = hipMemLocationTypeDevice;
    physicalMemoryReuse_MultiDev(prop);
  }

  #if HT_AMD
  SECTION("Memory Allocation Type as hipMemAllocationTypeUncached") {
    hipMemAllocationProp prop{};
    prop.type = hipMemAllocationTypeUncached;
    prop.location.type = hipMemLocationTypeDevice;
    physicalMemoryReuse_MultiDev(prop);
  }
  #endif
}
/**
 * Test Description
 * ------------------------
 *    - Check if different physical chunk can be mapped/unmapped
 * for single vmm address. This test validates VMM memory reuse
 * using different physical ranges.
 * ------------------------
 *    - unit/virtualMemoryManagement/hipMemMap.cc
 * Test requirements
 * ------------------------
 *    - HIP_VERSION >= 7.0
 */
TEST_CASE("Unit_hipMemMap_VMMMemoryReuse_SingleGPU") {
  size_t granularity = 0;
  size_t buffer_size = N * sizeof(int);
  CTX_CREATE();
  int deviceId = 0;
  hipDevice_t device;
  HIP_CHECK(hipDeviceGet(&device, deviceId));
  checkVMMSupported(device);
  hipMemAllocationProp prop{};

  SECTION("Memory Allocation Type as hipMemAllocationTypePinned") {
    prop.type = hipMemAllocationTypePinned;
  }

  #if HT_AMD
  SECTION("Memory Allocation Type as hipMemAllocationTypeUncached") {
    prop.type = hipMemAllocationTypeUncached;
  }
  #endif

  prop.location.type = hipMemLocationTypeDevice;
  prop.location.id = device;  // Current Devices
  HIP_CHECK(
      hipMemGetAllocationGranularity(&granularity, &prop, hipMemAllocationGranularityMinimum));
  REQUIRE(granularity > 0);
  size_t size_mem = ((granularity + buffer_size - 1) / granularity) * granularity;
  hipMemGenericAllocationHandle_t handle[num_buf];
  // Allocate host memory and intialize data
  std::vector<int> A_h(N), B_h(N), C_h(N);
  // Initialize with data
  for (size_t idx = 0; idx < N; idx++) {
    A_h[idx] = idx;
    C_h[idx] = idx * idx;
  }
  // Allocate a physical memory chunk
  for (int buf = 0; buf < num_buf; buf++) {
    HIP_CHECK(hipMemCreate(&handle[buf], size_mem, &prop, 0));
  }
  // Allocate num_buf virtual address ranges
  void* ptrA;
  HIP_CHECK(hipMemAddressReserve(&ptrA, size_mem, 0, 0, 0));
  hipMemAccessDesc accessDesc = {};
  accessDesc.location.type = hipMemLocationTypeDevice;
  accessDesc.location.id = device;
  accessDesc.flags = hipMemAccessFlagsProtReadWrite;
  // Map ptrA to physical chunk
  for (int buf = 0; buf < num_buf; buf++) {
    std::fill(B_h.begin(), B_h.end(), initializer);
    HIP_CHECK(hipMemMap(ptrA, size_mem, 0, handle[buf], 0));
    // Set access to GPU 0
    HIP_CHECK(hipMemSetAccess(ptrA, size_mem, &accessDesc, 1));
    HIP_CHECK(hipMemcpyHtoD(reinterpret_cast<hipDeviceptr_t>(ptrA), A_h.data(), buffer_size));
    HIP_CHECK(hipMemcpyDtoH(B_h.data(), reinterpret_cast<hipDeviceptr_t>(ptrA), buffer_size));
    REQUIRE(true == std::equal(B_h.begin(), B_h.end(), A_h.data()));
#if HT_NVIDIA
    square_kernel<<<dim3(N / threadsPerBlk), dim3(threadsPerBlk), 0, 0>>>(
        reinterpret_cast<int*>(ptrA));
    HIP_CHECK(hipMemcpyDtoH(B_h.data(), reinterpret_cast<hipDeviceptr_t>(ptrA), buffer_size));
    HIP_CHECK(hipStreamSynchronize(0));
    REQUIRE(true == std::equal(B_h.begin(), B_h.end(), C_h.data()));
#endif
    HIP_CHECK(hipMemUnmap(ptrA, size_mem));
  }
  // Release resources
  for (int buf = 0; buf < num_buf; buf++) {
    HIP_CHECK(hipMemRelease(handle[buf]));
  }
  HIP_CHECK(hipMemAddressFree(ptrA, size_mem));

  CTX_DESTROY();
}

void vMMMemoryReuse_MultiGPU (hipMemAllocationProp prop) {
  int deviceId = 0, devicecount = 0;
  HIP_CHECK(hipGetDeviceCount(&devicecount));
  if (devicecount < 2) {
    HipTest::HIP_SKIP_TEST("Machine is Single GPU. Skipping Test..");
    return;
  }
  size_t granularity = 0;
  size_t buffer_size = N * sizeof(int);
  hipDevice_t device;
  HIP_CHECK(hipSetDevice(0));
  HIP_CHECK(hipDeviceGet(&device, deviceId));
  checkVMMSupported(device);
  prop.location.id = device;  // Current Devices
  HIP_CHECK(
      hipMemGetAllocationGranularity(&granularity, &prop, hipMemAllocationGranularityMinimum));
  REQUIRE(granularity > 0);
  size_t size_mem = ((granularity + buffer_size - 1) / granularity) * granularity;
  std::vector<hipMemGenericAllocationHandle_t> handle(devicecount);
  // Allocate host memory and intialize data
  std::vector<int> A_h(N), B_h(N);
  // Initialize with data
  for (size_t idx = 0; idx < N; idx++) {
    A_h[idx] = idx;
  }
  // Allocate a physical memory chunk
  for (int dev = 0; dev < devicecount; dev++) {
    hipDevice_t dev_handle;
    HIP_CHECK(hipDeviceGet(&dev_handle, dev));
    prop.location.id = dev_handle;
    HIP_CHECK(hipMemCreate(&handle[dev], size_mem, &prop, 0));
  }
  // Allocate devicecount virtual address ranges
  void* ptrA;
  HIP_CHECK(hipMemAddressReserve(&ptrA, size_mem, 0, 0, 0));
  // Map ptrA to physical chunk
  SECTION("Set Access of VMM to Different GPU") {
    for (int dev = 0; dev < devicecount; dev++) {
      hipDevice_t device;
      HIP_CHECK(hipDeviceGet(&device, dev));
      hipMemAccessDesc accessDesc = {};
      accessDesc.location.type = hipMemLocationTypeDevice;
      accessDesc.location.id = device;
      accessDesc.flags = hipMemAccessFlagsProtReadWrite;
      HIP_CHECK(hipSetDevice(dev));
      std::fill(B_h.begin(), B_h.end(), initializer);
      HIP_CHECK(hipMemMap(ptrA, size_mem, 0, handle[dev], 0));
      HIP_CHECK(hipMemSetAccess(ptrA, size_mem, &accessDesc, 1));
      HIP_CHECK(hipMemcpyHtoD(reinterpret_cast<hipDeviceptr_t>(ptrA), A_h.data(), buffer_size));
      HIP_CHECK(hipMemcpyDtoH(B_h.data(), reinterpret_cast<hipDeviceptr_t>(ptrA), buffer_size));
      HIP_CHECK(hipMemUnmap(ptrA, size_mem));
      REQUIRE(true == std::equal(B_h.begin(), B_h.end(), A_h.data()));
    }
  }
  SECTION("Set Access of VMM to default GPU") {
    hipMemAccessDesc accessDesc = {};
    accessDesc.location.type = hipMemLocationTypeDevice;
    accessDesc.location.id = device;
    accessDesc.flags = hipMemAccessFlagsProtReadWrite;
    for (int dev = 0; dev < devicecount; dev++) {
      std::fill(B_h.begin(), B_h.end(), initializer);
      HIP_CHECK(hipMemMap(ptrA, size_mem, 0, handle[dev], 0));
      HIP_CHECK(hipMemSetAccess(ptrA, size_mem, &accessDesc, 1));
      HIP_CHECK(hipMemcpyHtoD(reinterpret_cast<hipDeviceptr_t>(ptrA), A_h.data(), buffer_size));
      HIP_CHECK(hipMemcpyDtoH(B_h.data(), reinterpret_cast<hipDeviceptr_t>(ptrA), buffer_size));
      HIP_CHECK(hipMemUnmap(ptrA, size_mem));
      REQUIRE(true == std::equal(B_h.begin(), B_h.end(), A_h.data()));
    }
  }
  HIP_CHECK(hipSetDevice(0));
  // Release resources
  for (int dev = 0; dev < devicecount; dev++) {
    HIP_CHECK(hipMemRelease(handle[dev]));
  }
  HIP_CHECK(hipMemAddressFree(ptrA, size_mem));
}
/**
 * Test Description
 * ------------------------
 *    - Check if different physical chunk allocated in different devices
 * can be mapped/unmapped to single vmm address. This test validates VMM
 * memory reuse using different physical ranges.
 * ------------------------
 *    - unit/virtualMemoryManagement/hipMemMap.cc
 * Test requirements
 * ------------------------
 *    - HIP_VERSION >= 7.0
 */
TEST_CASE("Unit_hipMemMap_VMMMemoryReuse_MultiGPU", "[multigpu]") {
  CHECK_P2P_SUPPORT
  SECTION("Memory Allocation Type as hipMemAllocationTypePinned") {
    hipMemAllocationProp prop{};
    prop.type = hipMemAllocationTypePinned;
    prop.location.type = hipMemLocationTypeDevice;
    vMMMemoryReuse_MultiGPU(prop);
  }

  #if HT_AMD
  SECTION("Memory Allocation Type as hipMemAllocationTypeUncached") {
    hipMemAllocationProp prop{};
    prop.type = hipMemAllocationTypeUncached;
    prop.location.type = hipMemLocationTypeDevice;
    vMMMemoryReuse_MultiGPU(prop);
  }
  #endif
}
/**
 * Test Description
 * ------------------------
 *    - Check if a partial part of a VMM range can be mapped/unmapped
 * to a physical address.
 * ------------------------
 *    - unit/virtualMemoryManagement/hipMemMap.cc
 * Test requirements
 * ------------------------
 *    - HIP_VERSION >= 7.0
 */
TEST_CASE("Unit_hipMemMap_MapPartialVMMMem") {
  int deviceId = 0;
  size_t granularity = 0;
  size_t buffer_size = N * sizeof(int);
  hipDevice_t device;
  CTX_CREATE();
  HIP_CHECK(hipDeviceGet(&device, deviceId));
  checkVMMSupported(device);
  hipMemAllocationProp prop{};

  SECTION("Memory Allocation Type as hipMemAllocationTypePinned") {
    prop.type = hipMemAllocationTypePinned;
  }

  #if HT_AMD
  SECTION("Memory Allocation Type as hipMemAllocationTypeUncached") {
    prop.type = hipMemAllocationTypeUncached;
  }
  #endif

  prop.location.type = hipMemLocationTypeDevice;
  prop.location.id = device;  // Current Devices
  HIP_CHECK(
      hipMemGetAllocationGranularity(&granularity, &prop, hipMemAllocationGranularityMinimum));
  REQUIRE(granularity > 0);
  size_t size_mem = ((granularity + buffer_size - 1) / granularity) * granularity;
  hipMemGenericAllocationHandle_t handle;
  // Allocate host memory and intialize data
  std::vector<int> A_h(N), B_h(N);
  // Initialize with data
  for (size_t idx = 0; idx < N; idx++) {
    A_h[idx] = idx;
  }
  // Allocate a bigger physical memory chunk of size_mem
  HIP_CHECK(hipMemCreate(&handle, size_mem, &prop, 0));
  // Allocate virtual address range of size twice size_mem
  void* ptrA;
  HIP_CHECK(hipMemAddressReserve(&ptrA, 2 * size_mem, 0, 0, 0));
  hipMemAccessDesc accessDesc = {};
  accessDesc.location.type = hipMemLocationTypeDevice;
  accessDesc.location.id = device;
  accessDesc.flags = hipMemAccessFlagsProtReadWrite;
  std::fill(B_h.begin(), B_h.end(), initializer);
  HIP_CHECK(hipMemMap(ptrA, size_mem, 0, handle, 0));
  HIP_CHECK(hipMemSetAccess(ptrA, size_mem, &accessDesc, 1));
  HIP_CHECK(hipMemcpyHtoD(reinterpret_cast<hipDeviceptr_t>(ptrA), A_h.data(), buffer_size));
  HIP_CHECK(hipMemcpyDtoH(B_h.data(), reinterpret_cast<hipDeviceptr_t>(ptrA), buffer_size));
  REQUIRE(true == std::equal(B_h.begin(), B_h.end(), A_h.data()));
  HIP_CHECK(hipMemUnmap(ptrA, size_mem));
  // Release resources
  HIP_CHECK(hipMemRelease(handle));
  HIP_CHECK(hipMemAddressFree(ptrA, 2 * size_mem));
  CTX_DESTROY();
}

/**
 * Test Description
 * ------------------------
 *    - Negative Argument Tests
 * ------------------------
 *    - unit/virtualMemoryManagement/hipMemMap.cc
 * Test requirements
 * ------------------------
 *    - HIP_VERSION >= 6.1
 */
TEST_CASE("Unit_hipMemMap_negative") {
  size_t granularity = 0;
  size_t buffer_size = N * sizeof(int);
  CTX_CREATE();
  int deviceId = 0;
  hipDevice_t device;
  HIP_CHECK(hipDeviceGet(&device, deviceId));
  checkVMMSupported(device);
  hipMemAllocationProp prop{};
  prop.type = hipMemAllocationTypePinned;
  prop.location.type = hipMemLocationTypeDevice;
  prop.location.id = device;  // Current Devices
  HIP_CHECK(
      hipMemGetAllocationGranularity(&granularity, &prop, hipMemAllocationGranularityMinimum));
  REQUIRE(granularity > 0);
  size_t size_mem = ((granularity + buffer_size - 1) / granularity) * granularity;
  hipMemGenericAllocationHandle_t handle;
  void* ptrA;
  // Allocate physical memory
  HIP_CHECK(hipMemCreate(&handle, size_mem, &prop, 0));
  // Allocate virtual address range
  HIP_CHECK(hipMemAddressReserve(&ptrA, size_mem, 0, 0, 0));

  SECTION("nullptr to ptrA") {
    REQUIRE(hipMemMap(nullptr, size_mem, 0, handle, 0) == hipErrorInvalidValue);
  }

  SECTION("pass zero to size") {
    REQUIRE(hipMemMap(ptrA, 0, 0, handle, 0) == hipErrorInvalidValue);
  }

  HIP_CHECK(hipMemRelease(handle));
  HIP_CHECK(hipMemAddressFree(ptrA, size_mem));
  CTX_DESTROY();
}

TEST_CASE("Unit_hipMemMap_Capture") {
  hipMemGenericAllocationHandle_t handle;
  size_t granularity = 0;
  constexpr size_t kAlignment = 2;
  constexpr int kDeviceId = 0;
  hipDevice_t device = 0;
  void* device_ptr = nullptr;

  CTX_CREATE();
  HIP_CHECK(hipDeviceGet(&device, kDeviceId));

  hipMemAllocationProp prop{};
  prop.type = hipMemAllocationTypePinned;
  prop.location.type = hipMemLocationTypeDevice;
  prop.location.id = device;

  HIP_CHECK(
      hipMemGetAllocationGranularity(&granularity, &prop, hipMemAllocationGranularityMinimum));
  HIP_CHECK(hipMemCreate(&handle, granularity, &prop, 0));
  HIP_CHECK(hipMemAddressReserve(&device_ptr, granularity, kAlignment, 0, 0));

  hipStream_t stream = nullptr;
  HIP_CHECK(hipStreamCreate(&stream));

  GENERATE_CAPTURE();
  BEGIN_CAPTURE(stream);
  HIP_CHECK(hipMemMap(device_ptr, granularity, 0, handle, 0));
  END_CAPTURE(stream);

  HIP_CHECK(hipStreamDestroy(stream));
  HIP_CHECK(hipMemUnmap(device_ptr, granularity));
  HIP_CHECK(hipMemRelease(handle));
  HIP_CHECK(hipMemAddressFree(device_ptr, granularity));
}

/**
 * End doxygen group VirtualMemoryManagementTest.
 * @}
 */