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Diffstat (limited to 'daemons/gptp/windows/daemon_cl/tsc.hpp')
| -rw-r--r-- | daemons/gptp/windows/daemon_cl/tsc.hpp | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/daemons/gptp/windows/daemon_cl/tsc.hpp b/daemons/gptp/windows/daemon_cl/tsc.hpp deleted file mode 100644 index 425205d3..00000000 --- a/daemons/gptp/windows/daemon_cl/tsc.hpp +++ /dev/null @@ -1,147 +0,0 @@ -/****************************************************************************** - - Copyright (c) 2009-2012, Intel Corporation - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - 1. Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - - 2. Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - 3. Neither the name of the Intel Corporation nor the names of its - contributors may be used to endorse or promote products derived from - this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - POSSIBILITY OF SUCH DAMAGE. - -******************************************************************************/ - -/**@file*/ - -#ifndef TSC_HPP -#define TSC_HPP - -#include <intrin.h> -#include <stdint.h> - -/** - * @brief Gets the processor timestamp - * @return processor timestamp - */ -inline unsigned __int64 PLAT_rdtsc() -{ - return __rdtsc(); -} - -#define CLOCK_INFO_CPUID_LEAF (0x15) -#define SYSTEM_CLOCK_24MHZ (24000000) -#define MAX_MODEL_LIST_LEN (2) - -typedef struct -{ - short model_list[MAX_MODEL_LIST_LEN+1]; // Terminate model list with -1 - uint32_t clock_rate; // clock_rate of 0 is invalid -} -ModelNumberSystemClockRateMapping; - -static ModelNumberSystemClockRateMapping ModelNumberSystemClockRateMap[] = -{ - {{ 0x5E, 0x4E, -1 }, SYSTEM_CLOCK_24MHZ }, - {{ -1 }, 0 }, -}; - -/** -* @brief Gets the system clock frequency using CPU model number -* @param model_query model number to look up -* @return System frequency, or 0 on error -*/ -inline uint32_t FindFrequencyByModel(uint8_t model_query) { - ModelNumberSystemClockRateMapping *map = ModelNumberSystemClockRateMap; - uint32_t ret = 0; - - while (map->clock_rate != 0) - { - short *model = map->model_list; - - while (*model != -1) - { - if (*model == model_query) { - ret = map->clock_rate; - break; - } - ++model; - } - ++map; - } - - return ret; -} - - -/** - * @brief Gets the TSC frequnecy - * @param builtin whether device is connected to the Intel bus (not PCIE) - * @return TSC frequency, or 0 on error - */ -inline uint64_t getTSCFrequency( bool builtin ) { - int max_cpuid_level; - int tmp[4]; - BOOL is_windows_10; - LARGE_INTEGER freq; - - // Find the max cpuid level, and if possible find clock info - __cpuid(tmp, 0); - max_cpuid_level = tmp[0]; - if (max_cpuid_level >= CLOCK_INFO_CPUID_LEAF) - __cpuid(tmp, CLOCK_INFO_CPUID_LEAF); - - // Determine if the OS is Windows 10 or later. - { - OSVERSIONINFOEXW osvi = { sizeof(osvi), 0, 0, 0, 0, {0}, 0, 0 }; - DWORDLONG const dwlConditionMask = VerSetConditionMask(0, VER_MAJORVERSION, VER_GREATER_EQUAL); - osvi.dwMajorVersion = 10; - - // NOTE: VerifyVersionInfo returns false when called by applications that do not have a compatibility manifest for Windows 10, - // even when the current operating system version is Windows 10. - is_windows_10 = VerifyVersionInfoW(&osvi, VER_MAJORVERSION, dwlConditionMask) != FALSE; - } - - // For pre-Win10 on 6th Generation or greater Intel CPUs the raw hardware - // clock will be returned, *else* use QPC for everything else - // - // EAX (tmp[0]) must be >= 1, See Intel SDM 17.15.4 "Invariant Time-keeping" - if (!is_windows_10 && - max_cpuid_level >= CLOCK_INFO_CPUID_LEAF && - tmp[0] >= 1 && - builtin ) - { - SYSTEM_INFO info; - - GetSystemInfo(&info); - - // Look at processor model (upper byte of revision) number to determine clock rate - return FindFrequencyByModel(info.wProcessorRevision >> 8); - } - - if (QueryPerformanceFrequency(&freq)) - return freq.QuadPart; - - return 0; -} - -#endif/*TSC_HPP*/ |