1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/*
* Copyright (C) 2020-2022 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#pragma once
#include <chrono>
#include <string>
const std::string vendorIntel("Intel(R) Corporation");
const std::string unknown("unknown");
const std::string intelPciId("0x8086");
constexpr uint32_t MbpsToBytesPerSecond = 125000;
constexpr double milliVoltsFactor = 1000.0;
namespace L0 {
struct steadyClock {
typedef std::chrono::duration<uint64_t, std::milli> duration;
typedef duration::rep rep;
typedef duration::period period;
typedef std::chrono::time_point<steadyClock> time_point;
static time_point now() noexcept {
static auto epoch = std::chrono::steady_clock::now();
return time_point(std::chrono::duration_cast<duration>(std::chrono::steady_clock::now() - epoch));
}
};
} // namespace L0
namespace PciLinkSpeeds {
constexpr double Pci2_5GigatransfersPerSecond = 2.5;
constexpr double Pci5_0GigatransfersPerSecond = 5.0;
constexpr double Pci8_0GigatransfersPerSecond = 8.0;
constexpr double Pci16_0GigatransfersPerSecond = 16.0;
constexpr double Pci32_0GigatransfersPerSecond = 32.0;
} // namespace PciLinkSpeeds
enum PciGenerations {
PciGen1 = 1,
PciGen2,
PciGen3,
PciGen4,
PciGen5,
};
constexpr uint8_t maxPciBars = 6;
// Linux kernel would report 255 link width, as an indication of unknown.
constexpr uint32_t unknownPcieLinkWidth = 255u;
constexpr uint32_t microSecondsToNanoSeconds = 1000u;
constexpr uint64_t convertJouleToMicroJoule = 1000000u;
constexpr uint64_t minTimeoutModeHeartbeat = 5000u;
constexpr uint64_t minTimeoutInMicroSeconds = 1000u;
constexpr uint16_t milliSecsToMicroSecs = 1000;
constexpr uint32_t milliFactor = 1000u;
constexpr uint32_t microFacor = milliFactor * milliFactor;
constexpr uint64_t gigaUnitTransferToUnitTransfer = 1000 * 1000 * 1000;
constexpr int32_t memoryBusWidth = 128; // bus width in bits
constexpr int32_t numMemoryChannels = 8;
#define BITS(x, at, width) (((x) >> (at)) & ((1 << (width)) - 1))
|
