From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id CAE13A04AF; Sun, 3 May 2020 10:39:13 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id D51281D57F; Sun, 3 May 2020 10:39:01 +0200 (CEST) Received: from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129]) by dpdk.org (Postfix) with ESMTP id 6C3701D56B for ; Sun, 3 May 2020 10:38:59 +0200 (CEST) Received: from Internal Mail-Server by MTLPINE2 (envelope-from fady@mellanox.com) with ESMTPS (AES256-SHA encrypted); 3 May 2020 11:38:54 +0300 Received: from l-wincomp04-vm.labs.mlnx (l-wincomp04-vm.mtl.labs.mlnx [10.237.1.5]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 0438cs9G024376; Sun, 3 May 2020 11:38:54 +0300 From: Fady Bader To: dev@dpdk.org Cc: thomas@monjalon.net, talshn@mellanox.com, fady@mellanox.com, dmitry.koziuk@gmail.com, harini.ramakrishnan@microsoft.com, ocardona@microsoft.com, anand.rawat@intel.com, ranjit.menon@intel.com Date: Sun, 3 May 2020 11:38:42 +0300 Message-Id: <20200503083842.9312-3-fady@mellanox.com> X-Mailer: git-send-email 2.16.1.windows.4 In-Reply-To: <20200503083842.9312-1-fady@mellanox.com> References: <20200503083842.9312-1-fady@mellanox.com> Subject: [dpdk-dev] [PATCH v3 2/2] timer: support EAL functions on Windows X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Implemented the needed Windows eal timer functions. Signed-off-by: Fady Bader --- lib/librte_eal/common/meson.build | 1 + lib/librte_eal/windows/eal.c | 6 ++ lib/librte_eal/windows/eal_timer.c | 96 +++++++++++++++++++++++++ lib/librte_eal/windows/include/rte_os.h | 2 + lib/librte_eal/windows/meson.build | 1 + 5 files changed, 106 insertions(+) create mode 100644 lib/librte_eal/windows/eal_timer.c diff --git a/lib/librte_eal/common/meson.build b/lib/librte_eal/common/meson.build index 6dcdcc890..532330e6d 100644 --- a/lib/librte_eal/common/meson.build +++ b/lib/librte_eal/common/meson.build @@ -20,6 +20,7 @@ if is_windows 'eal_common_options.c', 'eal_common_tailqs.c', 'eal_common_thread.c', + 'eal_common_timer.c', 'malloc_elem.c', 'malloc_heap.c', 'rte_malloc.c', diff --git a/lib/librte_eal/windows/eal.c b/lib/librte_eal/windows/eal.c index 38f17f09c..32853fbac 100644 --- a/lib/librte_eal/windows/eal.c +++ b/lib/librte_eal/windows/eal.c @@ -400,6 +400,12 @@ rte_eal_init(int argc, char **argv) return -1; } + if (rte_eal_timer_init() < 0) { + rte_eal_init_alert("Cannot init TSC timer"); + rte_errno = EFAULT; + return -1; + } + eal_thread_init_master(rte_config.master_lcore); RTE_LCORE_FOREACH_SLAVE(i) { diff --git a/lib/librte_eal/windows/eal_timer.c b/lib/librte_eal/windows/eal_timer.c new file mode 100644 index 000000000..111dadeab --- /dev/null +++ b/lib/librte_eal/windows/eal_timer.c @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2020 Mellanox Technologies, Ltd + */ +#include +#include + +#include +#include +#include +#include +#include +#include + +#define US_PER_SEC 1E6 +#define CYC_PER_10MHZ 1E7 + +/* The frequency of the RDTSC timer resolution */ +static uint64_t eal_tsc_resolution_hz; + +void +rte_delay_us_sleep(unsigned int us) +{ + HANDLE timer; + LARGE_INTEGER li_due_time; + + /* create waitable timer */ + timer = CreateWaitableTimer(NULL, TRUE, NULL); + if (!timer) { + RTE_LOG_WIN32_ERR("CreateWaitableTimer()"); + rte_errno = ENOMEM; + return; + } + + /* + * li_due_time's uom is 100 ns, we mul by 10 to convert to microseconds + * we set us microseconds time for timer. + */ + li_due_time.QuadPart = -(us * 10); + if (!SetWaitableTimer(timer, &li_due_time, 0, NULL, NULL, FALSE)) { + CloseHandle(timer); + RTE_LOG_WIN32_ERR("SetWaitableTimer()"); + rte_errno = EINVAL; + return; + } + /* start wait for timer for us microseconds */ + WaitForSingleObject(timer, INFINITE); + CloseHandle(timer); +} + +uint64_t +get_tsc_freq(void) +{ + LARGE_INTEGER t_start, t_end, elapsed_us; + LARGE_INTEGER frequency; + uint64_t tsc_hz; + + if (QueryPerformanceFrequency(&frequency) == 0) { + RTE_LOG_WIN32_ERR("QueryPerformanceFrequency()"); + return 0; + } + + if (QueryPerformanceCounter(&t_start) != 0) { + uint64_t end, start = rte_get_tsc_cycles(); + + rte_delay_us(US_PER_SEC / 10); /* 1/10 second */ + + QueryPerformanceCounter(&t_end); + end = rte_get_tsc_cycles(); + + elapsed_us.QuadPart = t_start.QuadPart - t_end.QuadPart; + + /* + * To guard against loss-of-precision, we convert + * to microseconds *before* dividing by ticks-per-second. + */ + elapsed_us.QuadPart *= US_PER_SEC; + elapsed_us.QuadPart /= frequency.QuadPart; + + double secs = ((double)elapsed_us.QuadPart)/US_PER_SEC; + tsc_hz = (uint64_t)((end - start)/secs); + /* Round up to 10Mhz. 1E7 ~ 10Mhz */ + return RTE_ALIGN_MUL_NEAR(tsc_hz, CYC_PER_10MHZ); + } + + RTE_LOG_WIN32_ERR("QueryPerformanceCounter()"); + return 0; +} + + +int +rte_eal_timer_init(void) +{ + set_tsc_freq(); + return 0; +} + diff --git a/lib/librte_eal/windows/include/rte_os.h b/lib/librte_eal/windows/include/rte_os.h index 62805a307..3b63a37cb 100644 --- a/lib/librte_eal/windows/include/rte_os.h +++ b/lib/librte_eal/windows/include/rte_os.h @@ -24,6 +24,8 @@ extern "C" { #define PATH_MAX _MAX_PATH #endif +#define sleep(x) Sleep(1000 * (x)) + #define strerror_r(a, b, c) strerror_s(b, c, a) /* strdup is deprecated in Microsoft libc and _strdup is preferred */ diff --git a/lib/librte_eal/windows/meson.build b/lib/librte_eal/windows/meson.build index 0bd56cd8f..769cde797 100644 --- a/lib/librte_eal/windows/meson.build +++ b/lib/librte_eal/windows/meson.build @@ -12,6 +12,7 @@ sources += files( 'eal_memory.c', 'eal_mp.c', 'eal_thread.c', + 'eal_timer.c', 'getopt.c', ) -- 2.21.0