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From: Fady Bader <fady@mellanox.com>
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
Subject: [dpdk-dev] [PATCH v2 2/2] timer: support EAL functions on Windows
Date: Mon, 27 Apr 2020 15:20:47 +0300	[thread overview]
Message-ID: <20200427122047.16780-3-fady@mellanox.com> (raw)
In-Reply-To: <20200427122047.16780-1-fady@mellanox.com>

Implemented the needed Windows eal timer functions.

Signed-off-by: Fady Bader <fady@mellanox.com>
---
 lib/librte_eal/common/meson.build       |  1 +
 lib/librte_eal/windows/eal.c            |  6 +++
 lib/librte_eal/windows/eal_timer.c      | 68 +++++++++++++++++++++++++++++++++
 lib/librte_eal/windows/include/rte_os.h |  2 +
 lib/librte_eal/windows/meson.build      |  1 +
 5 files changed, 78 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..749cc9074
--- /dev/null
+++ b/lib/librte_eal/windows/eal_timer.c
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2020 Mellanox Technologies, Ltd
+ */
+#include <inttypes.h>
+#include <time.h>
+
+#include <rte_windows.h>
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_cycles.h>
+#include <rte_eal.h>
+#include <rte_errno.h>
+
+/* 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;
+	}
+
+	/* 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)
+{
+	uint64_t tsc_freq;
+	LARGE_INTEGER Frequency;
+
+	QueryPerformanceFrequency(&Frequency);
+
+	/*
+	 * Mulitply by 1K to obtain the true frequency of the CPU
+	 * it was noted in the MSDN "in many cases, QueryPerformanceFrequency
+	 * returns the TSC frequency divided by 1024"
+	 */
+	tsc_freq = ((uint64_t)Frequency.QuadPart * 1024);
+
+	return tsc_freq;
+}
+
+
+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',
 )
 
-- 
2.16.1.windows.4


  parent reply	other threads:[~2020-04-27 12:21 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-27 12:20 [dpdk-dev] [PATCH v2 0/2] eal timer split and implementation for Windows Fady Bader
2020-04-27 12:20 ` [dpdk-dev] [PATCH v2 1/2] timer: move from common to Unix directory Fady Bader
2020-04-27 12:20 ` Fady Bader [this message]
2020-04-27 19:34   ` [dpdk-dev] [PATCH v2 2/2] timer: support EAL functions on Windows Dmitry Kozlyuk

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