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/*
* Copyright (C) 2022-2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/helpers/constants.h"
#include "shared/source/os_interface/linux/cache_info.h"
#include "shared/source/os_interface/product_helper.h"
#include "shared/test/common/helpers/debug_manager_state_restore.h"
#include "shared/test/common/helpers/default_hw_info.h"
#include "shared/test/common/libult/linux/drm_query_mock.h"
#include "shared/test/common/mocks/linux/mock_ioctl_helper.h"
#include "shared/test/common/mocks/mock_execution_environment.h"
#include "shared/test/common/os_interface/linux/drm_mock_cache_info.h"
#include "shared/test/common/test_macros/test.h"
using namespace NEO;
struct DrmCacheInfoFixture {
static constexpr uint16_t maxNumCacheWays{32};
void setUp() {
executionEnvironment.reset(new MockExecutionEnvironment{});
drm.reset(new DrmQueryMock{*executionEnvironment->rootDeviceEnvironments[0]});
l2CacheParameters.maxSize = 1;
l2CacheParameters.maxNumRegions = 1;
l2CacheParameters.maxNumWays = 2;
l3CacheParameters.maxSize = 32 * MemoryConstants::kiloByte;
l3CacheParameters.maxNumRegions = 2;
l3CacheParameters.maxNumWays = maxNumCacheWays;
}
void tearDown() {
}
std::unique_ptr<MockExecutionEnvironment> executionEnvironment{nullptr};
std::unique_ptr<DrmQueryMock> drm{nullptr};
CacheReservationParameters l2CacheParameters{};
CacheReservationParameters l3CacheParameters{};
};
using DrmCacheInfoTest = Test<DrmCacheInfoFixture>;
TEST_F(DrmCacheInfoTest, givenCacheRegionsExistsWhenCallingSetUpCacheInfoThenCacheInfoIsCreatedAndReturnsMaxReservationCacheLimits) {
auto &productHelper = executionEnvironment->rootDeviceEnvironments[0]->getHelper<ProductHelper>();
drm->setupCacheInfo(*defaultHwInfo.get());
auto cacheInfo = drm->getCacheInfo();
EXPECT_NE(nullptr, cacheInfo);
constexpr auto cacheLevel{CacheLevel::level3};
if (productHelper.getNumCacheRegions() == 0) {
EXPECT_EQ(0u, cacheInfo->getMaxReservationCacheSize(cacheLevel));
EXPECT_EQ(0u, cacheInfo->getMaxReservationNumCacheRegions(cacheLevel));
EXPECT_EQ(0u, cacheInfo->getMaxReservationNumWays(cacheLevel));
} else {
const GT_SYSTEM_INFO *gtSysInfo = &defaultHwInfo->gtSystemInfo;
constexpr uint16_t maxNumWays = 32;
constexpr uint16_t globalReservationLimit = 16;
constexpr uint16_t clientReservationLimit = 8;
constexpr uint16_t maxReservationNumWays = std::min(globalReservationLimit, clientReservationLimit);
const size_t totalCacheSize = gtSysInfo->L3CacheSizeInKb * MemoryConstants::kiloByte;
const size_t maxReservationCacheSize = (totalCacheSize * maxReservationNumWays) / maxNumWays;
const size_t maxReservationNumCacheRegions = productHelper.getNumCacheRegions() - 1;
EXPECT_EQ(maxReservationCacheSize, cacheInfo->getMaxReservationCacheSize(cacheLevel));
EXPECT_EQ(maxReservationNumCacheRegions, cacheInfo->getMaxReservationNumCacheRegions(cacheLevel));
EXPECT_EQ(maxReservationNumWays, cacheInfo->getMaxReservationNumWays(cacheLevel));
}
}
TEST_F(DrmCacheInfoTest, givenDebugFlagSetWhenCallingSetUpCacheInfoThenCacheInfoIsCreatedWithoutValues) {
DebugManagerStateRestore restorer;
debugManager.flags.ClosEnabled.set(0);
drm->setupCacheInfo(*defaultHwInfo.get());
EXPECT_NE(nullptr, drm->getCacheInfo());
auto cacheInfo = drm->getCacheInfo();
constexpr auto cacheLevel3{CacheLevel::level3};
EXPECT_EQ(0u, cacheInfo->getMaxReservationCacheSize(cacheLevel3));
EXPECT_EQ(0u, cacheInfo->getMaxReservationNumCacheRegions(cacheLevel3));
EXPECT_EQ(0u, cacheInfo->getMaxReservationNumWays(cacheLevel3));
constexpr auto cacheLevel2{CacheLevel::level2};
EXPECT_EQ(0u, cacheInfo->getMaxReservationCacheSize(cacheLevel2));
EXPECT_EQ(0u, cacheInfo->getMaxReservationNumCacheRegions(cacheLevel2));
EXPECT_EQ(0u, cacheInfo->getMaxReservationNumWays(cacheLevel2));
}
TEST_F(DrmCacheInfoTest, givenDebugFlagSetWhenCallingSetUpCacheInfoThenL2CacheInfoIsCreatedAccordingly) {
DebugManagerStateRestore restorer;
debugManager.flags.L2ClosNumCacheWays.set(2);
drm->setupCacheInfo(*defaultHwInfo.get());
EXPECT_NE(nullptr, drm->getCacheInfo());
auto cacheInfo = drm->getCacheInfo();
auto &productHelper = executionEnvironment->rootDeviceEnvironments[0]->getHelper<ProductHelper>();
constexpr auto cacheLevel2{CacheLevel::level2};
if (productHelper.getNumCacheRegions() > 0) {
EXPECT_EQ(1u, cacheInfo->getMaxReservationCacheSize(cacheLevel2));
EXPECT_EQ(1u, cacheInfo->getMaxReservationNumCacheRegions(cacheLevel2));
EXPECT_EQ(2u, cacheInfo->getMaxReservationNumWays(cacheLevel2));
} else {
EXPECT_EQ(0u, cacheInfo->getMaxReservationCacheSize(cacheLevel2));
EXPECT_EQ(0u, cacheInfo->getMaxReservationNumCacheRegions(cacheLevel2));
EXPECT_EQ(0u, cacheInfo->getMaxReservationNumWays(cacheLevel2));
}
}
TEST_F(DrmCacheInfoTest, givenDebugFlagSetWhenCallingSetUpCacheInfoThenL2CacheInfoIsCreatedAndRegionReserved) {
constexpr auto staticL2CacheReservationSize{1U};
constexpr auto staticL2CacheNumWays{2U};
DebugManagerStateRestore restorer;
debugManager.flags.ForceStaticL2ClosReservation.set(true);
auto mockIoctlHelper{new MockIoctlHelper{*drm}};
drm->ioctlHelper.reset(mockIoctlHelper);
mockIoctlHelper->closAllocResult = CacheRegion::region3;
mockIoctlHelper->closAllocWaysResult = staticL2CacheNumWays;
drm->setupCacheInfo(*defaultHwInfo.get());
EXPECT_NE(nullptr, drm->getCacheInfo());
auto &productHelper = executionEnvironment->rootDeviceEnvironments[0]->getHelper<ProductHelper>();
auto *mockCacheInfo{static_cast<MockCacheInfo *>(drm->getCacheInfo())};
if (productHelper.getNumCacheRegions() > 0U) {
EXPECT_TRUE(mockCacheInfo->isRegionReserved(CacheRegion::region3, staticL2CacheReservationSize));
} else {
EXPECT_FALSE(mockCacheInfo->isRegionReserved(CacheRegion::region3, staticL2CacheReservationSize));
}
}
TEST_F(DrmCacheInfoTest, givenCacheInfoCreatedWhenGetCacheRegionSucceedsToReserveL3CacheRegionThenReturnTrue) {
CacheInfo cacheInfo(*drm->getIoctlHelper(), l2CacheParameters, l3CacheParameters);
constexpr auto cacheLevel{CacheLevel::level3};
size_t cacheReservationSize = cacheInfo.getMaxReservationCacheSize(cacheLevel);
EXPECT_TRUE(cacheInfo.getCacheRegion(cacheReservationSize, CacheRegion::region1));
EXPECT_EQ(CacheRegion::region1, cacheInfo.freeCacheRegion(cacheLevel, CacheRegion::region1));
}
TEST_F(DrmCacheInfoTest, givenCacheInfoCreatedWhenGetCacheRegionFailsToReserveCacheRegionThenReturnFalse) {
CacheInfo cacheInfo(*drm->getIoctlHelper(), l2CacheParameters, l3CacheParameters);
constexpr auto cacheLevel{CacheLevel::level3};
size_t cacheReservationSize = cacheInfo.getMaxReservationCacheSize(cacheLevel);
drm->context.closIndex = 0xFFFF;
EXPECT_FALSE(cacheInfo.getCacheRegion(cacheReservationSize, CacheRegion::region1));
EXPECT_EQ(CacheRegion::none, cacheInfo.freeCacheRegion(cacheLevel, CacheRegion::region1));
}
TEST_F(DrmCacheInfoTest, givenCacheInfoWithAnyLimitParameterEqualToZeroWhenReservationIsTriedThenCacheRegionNoneIsReturned) {
MockCacheInfo cacheInfo(*drm->getIoctlHelper(), l2CacheParameters, l3CacheParameters);
constexpr auto cacheLevel{CacheLevel::level3};
size_t cacheReservationSize = cacheInfo.getMaxReservationCacheSize(cacheLevel);
const auto maxSizeOrig = cacheInfo.l3ReservationLimits.maxSize;
cacheInfo.l3ReservationLimits.maxSize = 0;
EXPECT_EQ(CacheRegion::none, cacheInfo.reserveCacheRegion(cacheLevel, cacheReservationSize));
cacheInfo.l3ReservationLimits.maxSize = maxSizeOrig;
const auto maxNumWaysOrig = cacheInfo.l3ReservationLimits.maxNumWays;
cacheInfo.l3ReservationLimits.maxNumWays = 0;
EXPECT_EQ(CacheRegion::none, cacheInfo.reserveCacheRegion(cacheLevel, cacheReservationSize));
cacheInfo.l3ReservationLimits.maxNumWays = maxNumWaysOrig;
const auto maxNumRegionsOrig = cacheInfo.l3ReservationLimits.maxNumRegions;
cacheInfo.l3ReservationLimits.maxNumRegions = 0;
EXPECT_EQ(CacheRegion::none, cacheInfo.reserveCacheRegion(cacheLevel, cacheReservationSize));
cacheInfo.l3ReservationLimits.maxNumRegions = maxNumRegionsOrig;
}
TEST_F(DrmCacheInfoTest, givenCacheInfoWithReservedCacheRegionWhenGetCacheRegionIsCalledForReservedCacheRegionThenReturnTrue) {
CacheInfo cacheInfo(*drm->getIoctlHelper(), l2CacheParameters, l3CacheParameters);
constexpr auto cacheLevel{CacheLevel::level3};
size_t cacheReservationSize = cacheInfo.getMaxReservationCacheSize(cacheLevel);
EXPECT_EQ(CacheRegion::region1, cacheInfo.reserveCacheRegion(cacheLevel, cacheReservationSize));
EXPECT_TRUE(cacheInfo.getCacheRegion(cacheReservationSize, CacheRegion::region1));
EXPECT_EQ(CacheRegion::region1, cacheInfo.freeCacheRegion(cacheLevel, CacheRegion::region1));
}
TEST_F(DrmCacheInfoTest, givenCacheInfoCreatedWhenGetCacheRegionIsCalledForReservableRegionsWithRegionSizesInverselyProportionalToNumCacheRegionsThenReturnTrue) {
CacheInfo cacheInfo(*drm->getIoctlHelper(), l2CacheParameters, l3CacheParameters);
constexpr auto cacheLevel{CacheLevel::level3};
size_t regionSize = cacheInfo.getMaxReservationCacheSize(cacheLevel) / cacheInfo.getMaxReservationNumCacheRegions(cacheLevel);
EXPECT_TRUE(cacheInfo.getCacheRegion(regionSize, CacheRegion::region1));
EXPECT_TRUE(cacheInfo.getCacheRegion(regionSize, CacheRegion::region2));
EXPECT_EQ(CacheRegion::region2, cacheInfo.freeCacheRegion(cacheLevel, CacheRegion::region2));
EXPECT_EQ(CacheRegion::region1, cacheInfo.freeCacheRegion(cacheLevel, CacheRegion::region1));
}
TEST_F(DrmCacheInfoTest, givenCacheInfoWhenSpecificNumCacheWaysIsRequestedThenReserveAppropriateCacheSize) {
DebugManagerStateRestore restorer;
debugManager.flags.ClosNumCacheWays.set(maxNumCacheWays / 2);
MockCacheInfo cacheInfo(*drm->getIoctlHelper(), l2CacheParameters, l3CacheParameters);
constexpr auto cacheLevel{CacheLevel::level3};
size_t maxReservationCacheSize = cacheInfo.getMaxReservationCacheSize(cacheLevel);
EXPECT_EQ(CacheRegion::region1, cacheInfo.reserveCacheRegion(cacheLevel, maxReservationCacheSize));
EXPECT_TRUE(cacheInfo.isRegionReserved(CacheRegion::region1, maxReservationCacheSize));
auto expectedRegionSize = cacheInfo.reservedCacheRegionsSize[toUnderlying(CacheRegion::region1)];
EXPECT_EQ(maxReservationCacheSize / 2, expectedRegionSize);
EXPECT_EQ(CacheRegion::region1, cacheInfo.freeCacheRegion(cacheLevel, CacheRegion::region1));
}
TEST_F(DrmCacheInfoTest, givenCacheInfoWhenNumCacheWaysIsExceededThenDontReserveCacheRegion) {
MockCacheInfo cacheInfo(*drm->getIoctlHelper(), l2CacheParameters, l3CacheParameters);
constexpr auto cacheLevel{CacheLevel::level3};
size_t maxReservationCacheSize = cacheInfo.getMaxReservationCacheSize(cacheLevel);
EXPECT_EQ(CacheRegion::region1, cacheInfo.reserveCacheRegion(cacheLevel, maxReservationCacheSize));
EXPECT_TRUE(cacheInfo.isRegionReserved(CacheRegion::region1, maxReservationCacheSize));
EXPECT_EQ(CacheRegion::none, cacheInfo.reserveCacheRegion(cacheLevel, maxReservationCacheSize));
EXPECT_FALSE(cacheInfo.isRegionReserved(CacheRegion::region2, maxReservationCacheSize));
}
TEST_F(DrmCacheInfoTest, givenCacheInfoCreatedWhenFreeCacheRegionIsCalledForNonReservedRegionThenItFails) {
MockCacheInfo cacheInfo(*drm->getIoctlHelper(), l2CacheParameters, l3CacheParameters);
constexpr auto cacheLevel{CacheLevel::level3};
cacheInfo.reservedCacheRegionsSize[toUnderlying(CacheRegion::region1)] = MemoryConstants::kiloByte;
EXPECT_EQ(CacheRegion::none, cacheInfo.freeCacheRegion(cacheLevel, CacheRegion::region1));
}
TEST_F(DrmCacheInfoTest, givenCacheInfoCreatedWhenPassingRegionIndexThenCorrectCacheLevelReturned) {
auto *cacheInfo{new MockCacheInfo(*drm->getIoctlHelper(), l2CacheParameters, l3CacheParameters)};
drm->cacheInfo.reset(cacheInfo);
EXPECT_EQ(CacheLevel::level3, cacheInfo->getLevelForRegion(CacheRegion::region1));
EXPECT_EQ(CacheLevel::level3, cacheInfo->getLevelForRegion(CacheRegion::region2));
EXPECT_EQ(CacheLevel::level2, cacheInfo->getLevelForRegion(CacheRegion::region3));
}
TEST_F(DrmCacheInfoTest, givenCacheInfoCreatedWhenAnyLevelLimitIsZeroThenNoRegionCanBeReserved) {
constexpr auto anyNonZeroValue{42U};
auto *cacheInfo{new MockCacheInfo(*drm->getIoctlHelper(), l2CacheParameters, l3CacheParameters)};
drm->cacheInfo.reset(cacheInfo);
l2CacheParameters.maxSize = 0U;
EXPECT_EQ(CacheRegion::none, cacheInfo->reserveCacheRegion(CacheLevel::level2, anyNonZeroValue));
EXPECT_FALSE(cacheInfo->isRegionReserved(CacheRegion::region3, anyNonZeroValue));
l2CacheParameters.maxSize = anyNonZeroValue;
l2CacheParameters.maxNumWays = 0U;
EXPECT_EQ(CacheRegion::none, cacheInfo->reserveCacheRegion(CacheLevel::level2, anyNonZeroValue));
EXPECT_FALSE(cacheInfo->isRegionReserved(CacheRegion::region3, anyNonZeroValue));
l2CacheParameters.maxNumWays = anyNonZeroValue;
l2CacheParameters.maxNumRegions = 0U;
EXPECT_EQ(CacheRegion::none, cacheInfo->reserveCacheRegion(CacheLevel::level2, anyNonZeroValue));
EXPECT_FALSE(cacheInfo->isRegionReserved(CacheRegion::region3, anyNonZeroValue));
}
TEST_F(DrmCacheInfoTest, givenCacheInfoCreatedWhenGetCacheRegionSucceedsToReserveL2CacheRegionThenReturnTrue) {
DebugManagerStateRestore restorer;
debugManager.flags.L2ClosNumCacheWays.set(2);
MockIoctlHelper ioctlHelper{*drm};
auto *cacheInfo{new MockCacheInfo(ioctlHelper, l2CacheParameters, l3CacheParameters)};
drm->cacheInfo.reset(cacheInfo);
constexpr auto cacheLevel{CacheLevel::level2};
size_t cacheReservationSize = cacheInfo->getMaxReservationCacheSize(cacheLevel);
ioctlHelper.closAllocResult = CacheRegion::region3;
ioctlHelper.closAllocWaysResult = l2CacheParameters.maxNumWays;
EXPECT_TRUE(cacheInfo->getCacheRegion(cacheReservationSize, CacheRegion::region3));
EXPECT_EQ(cacheInfo->reservedCacheRegionsSize[toUnderlying(CacheRegion::region3)], cacheReservationSize);
EXPECT_EQ(ioctlHelper.closAllocWaysCalled, 1U);
ioctlHelper.closFreeResult = CacheRegion::region3;
EXPECT_EQ(cacheInfo->freeCacheRegion(cacheLevel, CacheRegion::region3), CacheRegion::region3);
EXPECT_EQ(cacheInfo->reservedCacheRegionsSize[toUnderlying(CacheRegion::region3)], 0U);
EXPECT_EQ(cacheInfo->freeCacheRegion(cacheLevel, CacheRegion::region3), CacheRegion::none);
EXPECT_EQ(ioctlHelper.closAllocCalled, 1U);
EXPECT_EQ(ioctlHelper.closAllocWaysCalled, 2U);
EXPECT_EQ(ioctlHelper.closFreeCalled, 1U);
}
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