From: David Hunt <david.hunt@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v3 3/6] eal/arm: add 64-bit armv8 version of rte_cycles.h
Date: Fri, 30 Oct 2015 13:49:16 +0000 [thread overview]
Message-ID: <1446212959-19832-4-git-send-email-david.hunt@intel.com> (raw)
In-Reply-To: <1446212959-19832-1-git-send-email-david.hunt@intel.com>
Signed-off-by: David Hunt <david.hunt@intel.com>
---
.../common/include/arch/arm/rte_cycles.h | 4 ++
.../common/include/arch/arm/rte_cycles_64.h | 77 ++++++++++++++++++++++
2 files changed, 81 insertions(+)
create mode 100644 lib/librte_eal/common/include/arch/arm/rte_cycles_64.h
diff --git a/lib/librte_eal/common/include/arch/arm/rte_cycles.h b/lib/librte_eal/common/include/arch/arm/rte_cycles.h
index b2372fa..a8009a0 100644
--- a/lib/librte_eal/common/include/arch/arm/rte_cycles.h
+++ b/lib/librte_eal/common/include/arch/arm/rte_cycles.h
@@ -33,6 +33,10 @@
#ifndef _RTE_CYCLES_ARM_H_
#define _RTE_CYCLES_ARM_H_
+#ifdef RTE_ARCH_64
+#include <rte_cycles_64.h>
+#else
#include <rte_cycles_32.h>
+#endif
#endif /* _RTE_CYCLES_ARM_H_ */
diff --git a/lib/librte_eal/common/include/arch/arm/rte_cycles_64.h b/lib/librte_eal/common/include/arch/arm/rte_cycles_64.h
new file mode 100644
index 0000000..148b9f4
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/arm/rte_cycles_64.h
@@ -0,0 +1,77 @@
+/*
+ * BSD LICENSE
+ *
+ * Copyright (C) IBM Corporation 2014.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of IBM 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.
+*/
+
+#ifndef _RTE_CYCLES_ARM64_H_
+#define _RTE_CYCLES_ARM64_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "generic/rte_cycles.h"
+
+/**
+ * Read the time base register.
+ *
+ * @return
+ * The time base for this lcore.
+ */
+static inline uint64_t
+rte_rdtsc(void)
+{
+ uint64_t tsc;
+
+ asm volatile("mrs %0, CNTVCT_EL0" : "=r" (tsc));
+
+#ifdef RTE_TIMER_MULTIPLIER
+ return tsc * RTE_TIMER_MULTIPLIER;
+#else
+ return tsc;
+#endif
+
+}
+
+static inline uint64_t
+rte_rdtsc_precise(void)
+{
+ asm volatile("isb sy" :::);
+ return rte_rdtsc();
+}
+
+static inline uint64_t
+rte_get_tsc_cycles(void) { return rte_rdtsc(); }
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_CYCLES_ARM64_H_ */
--
1.9.1
next prev parent reply other threads:[~2015-10-30 13:49 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-30 13:49 [dpdk-dev] [PATCH v3 0/6] ARMv8 additions to ARMv7 support David Hunt
2015-10-30 13:49 ` [dpdk-dev] [PATCH v3 1/6] eal/arm: add 64-bit armv8 version of rte_memcpy.h David Hunt
2015-11-02 4:57 ` Jerin Jacob
2015-11-02 12:22 ` Hunt, David
2015-11-02 12:45 ` Jan Viktorin
2015-11-02 12:57 ` Jerin Jacob
2015-11-02 15:26 ` Hunt, David
2015-11-02 15:36 ` Jan Viktorin
2015-11-02 15:49 ` Hunt, David
2015-11-02 16:29 ` Jerin Jacob
2015-11-02 17:29 ` Jan Viktorin
2015-10-30 13:49 ` [dpdk-dev] [PATCH v3 2/6] eal/arm: add 64-bit armv8 version of rte_prefetch.h David Hunt
2015-10-30 13:49 ` David Hunt [this message]
2015-11-02 5:15 ` [dpdk-dev] [PATCH v3 3/6] eal/arm: add 64-bit armv8 version of rte_cycles.h Jerin Jacob
2015-10-30 13:49 ` [dpdk-dev] [PATCH v3 4/6] eal/arm: fix 64-bit armv8 compilation of rte_cpuflags.h David Hunt
2015-10-30 13:49 ` [dpdk-dev] [PATCH v3 5/6] mk: add support for armv8 on top of armv7 David Hunt
2015-11-02 4:43 ` Jerin Jacob
2015-10-30 13:49 ` [dpdk-dev] [PATCH v3 6/6] test: add checks for cpu flags on armv8 David Hunt
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