71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
/*
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* Copyright (C) 2020-2024 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#pragma once
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#include <chrono>
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#include <string_view>
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namespace L0 {
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inline constexpr std::string_view vendorIntel("Intel(R) Corporation");
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inline constexpr std::string_view unknown("unknown");
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inline constexpr std::string_view intelPciId("0x8086");
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inline constexpr std::string_view guid64BitMemoryCounters("0xb15a0ede");
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inline constexpr uint32_t mbpsToBytesPerSecond = 125000;
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inline constexpr double milliVoltsFactor = 1000.0;
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inline constexpr uint32_t maxRasErrorCategoryCount = 7;
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inline constexpr uint32_t maxRasErrorCategoryExpCount = 10;
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struct SteadyClock {
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typedef std::chrono::duration<uint64_t, std::milli> duration;
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typedef duration::rep rep;
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typedef duration::period period;
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typedef std::chrono::time_point<SteadyClock> time_point;
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static time_point now() noexcept {
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static auto epoch = std::chrono::steady_clock::now();
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return time_point(std::chrono::duration_cast<duration>(std::chrono::steady_clock::now() - epoch));
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}
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};
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namespace PciLinkSpeeds {
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inline constexpr double pci2Dot5GigaTransfersPerSecond = 2.5;
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inline constexpr double pci5GigaTransfersPerSecond = 5.0;
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inline constexpr double pci8GigaTransfersPerSecond = 8.0;
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inline constexpr double pci16GigaTransfersPerSecond = 16.0;
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inline constexpr double pci32GigaTransfersPerSecond = 32.0;
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} // namespace PciLinkSpeeds
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enum class PciGenerations {
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pciGen1 = 1,
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pciGen2,
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pciGen3,
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pciGen4,
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pciGen5,
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};
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inline constexpr uint8_t maxPciBars = 6;
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// Linux kernel would report 255 link width, as an indication of unknown.
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inline constexpr uint32_t unknownPcieLinkWidth = 255u;
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inline constexpr uint32_t microSecondsToNanoSeconds = 1000u;
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inline constexpr uint64_t convertJouleToMicroJoule = 1000000u;
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inline constexpr uint64_t minTimeoutModeHeartbeat = 5000u;
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inline constexpr uint64_t minTimeoutInMicroSeconds = 1000u;
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inline constexpr uint16_t milliSecsToMicroSecs = 1000;
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inline constexpr uint32_t milliFactor = 1000u;
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inline constexpr uint32_t microFacor = milliFactor * milliFactor;
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inline constexpr uint64_t gigaUnitTransferToUnitTransfer = 1000 * 1000 * 1000;
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inline constexpr int32_t memoryBusWidth = 128; // bus width in bytes
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inline constexpr int32_t numMemoryChannels = 8;
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inline constexpr uint32_t unknownMemoryType = UINT32_MAX;
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inline constexpr uint32_t bits(uint32_t x, uint32_t at, uint32_t width) {
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return (((x) >> (at)) & ((1 << (width)) - 1));
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}
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} // namespace L0
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