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ULT coverage gap on Sysman PCI

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Signed-off-by: Kanhaiya Singh <kanhaiya.singh@intel.com>
This commit is contained in:
Kanhaiya Singh
2021-03-18 10:37:08 +05:30
committed by Compute-Runtime-Automation
parent 24bc854f90
commit 5a911c9809
2 changed files with 25 additions and 1 deletions
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3
level_zero/tools/source/sysman/pci/os_pci.h
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@@ -1,5 +1,5 @@
/*
* Copyright (C) 2019-2020 Intel Corporation
* Copyright (C) 2019-2021 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
@@ -14,6 +14,7 @@
#include <vector>
namespace L0 {
int64_t convertPcieSpeedFromGTsToBs(double maxLinkSpeedInGt);
int32_t convertLinkSpeedToPciGen(double speed);
double convertPciGenToLinkSpeed(uint32_t gen);
class OsPci {

23
level_zero/tools/test/unit_tests/sources/sysman/pci/linux/test_zes_pci.cpp
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@@ -28,6 +28,10 @@ constexpr int32_t expectedWidth = 1u;
constexpr int32_t expectedGen = 1u; // As mockMaxLinkSpeed = 2.5, hence expectedGen should be 1
// As mockMaxLinkSpeed = 2.5, hence, pcieSpeedWithEnc = mockMaxLinkWidth * (2.5 * 1000 * 8/10 * 125000) = 250000000
constexpr int64_t expectedBandwidth = 250000000u;
constexpr int convertMegabitsPerSecondToBytesPerSecond = 125000;
constexpr int convertGigabitToMegabit = 1000;
constexpr double encodingGen1Gen2 = 0.8;
constexpr double encodingGen3andAbove = 0.98461538461;
struct MockMemoryManagerPci : public MemoryManagerMock {
MockMemoryManagerPci(NEO::ExecutionEnvironment &executionEnvironment) : MemoryManagerMock(const_cast<NEO::ExecutionEnvironment &>(executionEnvironment)) {}
@@ -223,5 +227,24 @@ TEST_F(ZesPciFixture, WhenConvertingLinkSpeedThenResultIsCorrect) {
EXPECT_EQ(0.0, convertPciGenToLinkSpeed(0));
}
// This test validates convertPcieSpeedFromGTsToBs method.
// convertPcieSpeedFromGTsToBs(double maxLinkSpeedInGt) method will
// return real PCIe speed in bytes per second as per below formula:
// maxLinkSpeedInGt * (Gigabit to Megabit) * Encoding * (Mb/s to bytes/second) =
// maxLinkSpeedInGt * convertGigabitToMegabit * Encoding * convertMegabitsPerSecondToBytesPerSecond;
TEST_F(ZesPciFixture, WhenConvertingLinkSpeedFromGigatransfersPerSecondToBytesPerSecondThenResultIsCorrect) {
int64_t speedPci160 = convertPcieSpeedFromGTsToBs(PciLinkSpeeds::Pci16_0GigatransfersPerSecond);
EXPECT_EQ(speedPci160, static_cast<int64_t>(PciLinkSpeeds::Pci16_0GigatransfersPerSecond * convertMegabitsPerSecondToBytesPerSecond * convertGigabitToMegabit * encodingGen3andAbove));
int64_t speedPci80 = convertPcieSpeedFromGTsToBs(PciLinkSpeeds::Pci8_0GigatransfersPerSecond);
EXPECT_EQ(speedPci80, static_cast<int64_t>(PciLinkSpeeds::Pci8_0GigatransfersPerSecond * convertMegabitsPerSecondToBytesPerSecond * convertGigabitToMegabit * encodingGen3andAbove));
int64_t speedPci50 = convertPcieSpeedFromGTsToBs(PciLinkSpeeds::Pci5_0GigatransfersPerSecond);
EXPECT_EQ(speedPci50, static_cast<int64_t>(PciLinkSpeeds::Pci5_0GigatransfersPerSecond * convertMegabitsPerSecondToBytesPerSecond * convertGigabitToMegabit * encodingGen1Gen2));
int64_t speedPci25 = convertPcieSpeedFromGTsToBs(PciLinkSpeeds::Pci2_5GigatransfersPerSecond);
EXPECT_EQ(speedPci25, static_cast<int64_t>(PciLinkSpeeds::Pci2_5GigatransfersPerSecond * convertMegabitsPerSecondToBytesPerSecond * convertGigabitToMegabit * encodingGen1Gen2));
EXPECT_EQ(0, convertPcieSpeedFromGTsToBs(0.0));
EXPECT_EQ(0, convertPcieSpeedFromGTsToBs(PciLinkSpeeds::Pci32_0GigatransfersPerSecond));
}
} // namespace ult
} // namespace L0