[dpdk-dev] [PATCH v5 00/14] Patches for DPDK to support Power architecture

[dpdk-dev] [PATCH v5 00/14] Patches for DPDK to support Power architecture

[Chao Zhu]

The set of patches add IBM Power architecture to the DPDK. It adds the
required support to the EAL library. This set of patches doesn't support
full DPDK function on Power processors. To compile on PPC64 architecture,
GCC version >= 4.8 must be used. According to Bruce and Neil's comments,
this v5 patch removed the common configuration files of Powerpc in v4.
Also, it fixed the checkpatch issues in v3.

The only unsolved checkpatch issue is :
ERROR: space prohibited before open square bracket '['

This issue refers to the asm code input/output naming. But I think the
error is invalid.

Chao Zhu (14):
  Add compiling definations for IBM Power architecture
  Add atomic operations for IBM Power architecture
  Add byte order operations for IBM Power architecture
  Add CPU cycle operations for IBM Power architecture
  Add prefetch operation for IBM Power architecture
  Add spinlock operation for IBM Power architecture
  Add vector memcpy for IBM Power architecture
  Add CPU flag checking for IBM Power architecture
  Remove iopl operation for IBM Power architecture
  Add cache size define for IBM Power Architecture
  Add huge page size define for IBM Power architecture
  Add eal memory support for IBM Power Architecture
  test_memzone:fix finding the second smallest segment
  Fix the compiling of test-pmd on IBM Power Architecture

 app/test-pmd/config.c                              |   39 ++-
 app/test/test_cpuflags.c                           |   35 ++
 app/test/test_malloc.c                             |    8 +-
 app/test/test_memzone.c                            |  132 ++++++-
 config/defconfig_ppc_64-power8-linuxapp-gcc        |   72 ++++
 config/defconfig_x86_64-native-linuxapp-clang      |    1 +
 config/defconfig_x86_64-native-linuxapp-gcc        |    1 +
 config/defconfig_x86_64-native-linuxapp-icc        |    1 +
 lib/librte_eal/common/eal_common_memzone.c         |   19 +-
 .../common/include/arch/ppc_64/rte_atomic.h        |  427 ++++++++++++++++++++
 .../common/include/arch/ppc_64/rte_byteorder.h     |  150 +++++++
 .../common/include/arch/ppc_64/rte_cpuflags.h      |  187 +++++++++
 .../common/include/arch/ppc_64/rte_cycles.h        |   88 ++++
 .../common/include/arch/ppc_64/rte_memcpy.h        |  226 +++++++++++
 .../common/include/arch/ppc_64/rte_prefetch.h      |   61 +++
 .../common/include/arch/ppc_64/rte_spinlock.h      |   73 ++++
 lib/librte_eal/common/include/rte_memory.h         |    9 +-
 lib/librte_eal/common/include/rte_memzone.h        |    8 +
 lib/librte_eal/linuxapp/eal/eal.c                  |   17 +-
 lib/librte_eal/linuxapp/eal/eal_memory.c           |   91 +++--
 mk/arch/ppc_64/rte.vars.mk                         |   39 ++
 mk/machine/power8/rte.vars.mk                      |   57 +++
 mk/rte.cpuflags.mk                                 |   17 +
 23 files changed, 1699 insertions(+), 59 deletions(-)
 create mode 100644 config/defconfig_ppc_64-power8-linuxapp-gcc
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_atomic.h
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_byteorder.h
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_cpuflags.h
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_cycles.h
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_memcpy.h
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_prefetch.h
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_spinlock.h
 create mode 100644 mk/arch/ppc_64/rte.vars.mk
 create mode 100644 mk/machine/power8/rte.vars.mk

[dpdk-dev] [PATCH v5 01/14] Add compiling definations for IBM Power architecture

[Chao Zhu]

To make DPDK run on IBM Power architecture, configuration files for
Power architecuture are added. Also, the compiling related .mk files are
added.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 config/defconfig_ppc_64-power8-linuxapp-gcc |   70 +++++++++++++++++++++++++++
 mk/arch/ppc_64/rte.vars.mk                  |   39 +++++++++++++++
 mk/machine/power8/rte.vars.mk               |   57 ++++++++++++++++++++++
 3 files changed, 166 insertions(+), 0 deletions(-)
 create mode 100644 config/defconfig_ppc_64-power8-linuxapp-gcc
 create mode 100644 mk/arch/ppc_64/rte.vars.mk
 create mode 100644 mk/machine/power8/rte.vars.mk

diff --git a/config/defconfig_ppc_64-power8-linuxapp-gcc b/config/defconfig_ppc_64-power8-linuxapp-gcc
new file mode 100644
index 0000000..b023336
--- /dev/null
+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
@@ -0,0 +1,70 @@
+#   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.
+
+#include "common_linuxapp"
+
+CONFIG_RTE_MACHINE="power8"
+
+CONFIG_RTE_ARCH="ppc_64"
+CONFIG_RTE_ARCH_PPC_64=y
+
+CONFIG_RTE_TOOLCHAIN="gcc"
+CONFIG_RTE_TOOLCHAIN_GCC=y
+
+# The following overrides the default common value.
+# Undefine the default value, then define the new one to avoid compiling error.
+
+CONFIG_RTE_LIBNAME=n
+CONFIG_RTE_LIBNAME="powerpc_dpdk"
+
+# Power8 has 96 cores, so increase CONFIG_RTE_MAX_LCORE from 64 to 128
+# Undefine the default value, then define the new one to avoid compiling error.
+CONFIG_RTE_MAX_LCORE=n
+CONFIG_RTE_MAX_LCORE=128
+
+# Note: Power doesn't have this support
+CONFIG_RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT=n
+
+# Note: Initially, all of the PMD drivers compilation are turned off on Power
+# Will turn on them only after the successful testing on Power
+CONFIG_RTE_LIBRTE_IXGBE_PMD=n
+CONFIG_RTE_LIBRTE_I40E_PMD=n
+CONFIG_RTE_LIBRTE_VIRTIO_PMD=n
+CONFIG_RTE_LIBRTE_VMXNET3_PMD=n
+CONFIG_RTE_LIBRTE_PMD_BOND=n
+
+# This following libraries are not available on Power. So they're turned off.
+CONFIG_RTE_LIBRTE_LPM=n
+CONFIG_RTE_LIBRTE_ACL=n
+CONFIG_RTE_LIBRTE_SCHED=n
+CONFIG_RTE_LIBRTE_PORT=n
+CONFIG_RTE_LIBRTE_TABLE=n
+
+CONFIG_RTE_LIBRTE_PIPELINE=n
diff --git a/mk/arch/ppc_64/rte.vars.mk b/mk/arch/ppc_64/rte.vars.mk
new file mode 100644
index 0000000..363fcd1
--- /dev/null
+++ b/mk/arch/ppc_64/rte.vars.mk
@@ -0,0 +1,39 @@
+#   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.
+
+
+ARCH  ?= powerpc
+CROSS ?=
+
+CPU_CFLAGS  ?= -m64
+CPU_LDFLAGS ?=
+CPU_ASFLAGS ?= -felf64
+
+export ARCH CROSS CPU_CFLAGS CPU_LDFLAGS CPU_ASFLAGS
diff --git a/mk/machine/power8/rte.vars.mk b/mk/machine/power8/rte.vars.mk
new file mode 100644
index 0000000..bae5e98
--- /dev/null
+++ b/mk/machine/power8/rte.vars.mk
@@ -0,0 +1,57 @@
+#   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.
+
+#
+# machine:
+#
+#   - can define ARCH variable (overriden by cmdline value)
+#   - can define CROSS variable (overriden by cmdline value)
+#   - define MACHINE_CFLAGS variable (overriden by cmdline value)
+#   - define MACHINE_LDFLAGS variable (overriden by cmdline value)
+#   - define MACHINE_ASFLAGS variable (overriden by cmdline value)
+#   - can define CPU_CFLAGS variable (overriden by cmdline value) that
+#     overrides the one defined in arch.
+#   - can define CPU_LDFLAGS variable (overriden by cmdline value) that
+#     overrides the one defined in arch.
+#   - can define CPU_ASFLAGS variable (overriden by cmdline value) that
+#     overrides the one defined in arch.
+#   - may override any previously defined variable
+#
+
+# ARCH =
+# CROSS =
+# MACHINE_CFLAGS =
+# MACHINE_LDFLAGS =
+# MACHINE_ASFLAGS =
+# CPU_CFLAGS =
+# CPU_LDFLAGS =
+# CPU_ASFLAGS =
+
+MACHINE_CFLAGS =
-- 
1.7.1

[dpdk-dev] [PATCH v5 02/14] Add atomic operations for IBM Power architecture

[Chao Zhu]

This patch adds architecture specific atomic operation file for IBM
Power architecture CPU.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 .../common/include/arch/ppc_64/rte_atomic.h        |  427 ++++++++++++++++++++
 1 files changed, 427 insertions(+), 0 deletions(-)
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_atomic.h

diff --git a/lib/librte_eal/common/include/arch/ppc_64/rte_atomic.h b/lib/librte_eal/common/include/arch/ppc_64/rte_atomic.h
new file mode 100644
index 0000000..3e1601b
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/ppc_64/rte_atomic.h
@@ -0,0 +1,427 @@
+/*
+ *   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.
+*/
+
+/*
+ * Inspired from FreeBSD src/sys/powerpc/include/atomic.h
+ * Copyright (c) 2008 Marcel Moolenaar
+ * Copyright (c) 2001 Benno Rice
+ * Copyright (c) 2001 David E. O'Brien
+ * Copyright (c) 1998 Doug Rabson
+ * All rights reserved.
+ */
+
+#ifndef _RTE_ATOMIC_PPC_64_H_
+#define _RTE_ATOMIC_PPC_64_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "generic/rte_atomic.h"
+
+/**
+ * General memory barrier.
+ *
+ * Guarantees that the LOAD and STORE operations generated before the
+ * barrier occur before the LOAD and STORE operations generated after.
+ */
+#define	rte_mb()  {asm volatile("sync" : : : "memory"); }
+
+/**
+ * Write memory barrier.
+ *
+ * Guarantees that the STORE operations generated before the barrier
+ * occur before the STORE operations generated after.
+ */
+#define	rte_wmb() {asm volatile("sync" : : : "memory"); }
+
+/**
+ * Read memory barrier.
+ *
+ * Guarantees that the LOAD operations generated before the barrier
+ * occur before the LOAD operations generated after.
+ */
+#define	rte_rmb() {asm volatile("sync" : : : "memory"); }
+
+/*------------------------- 16 bit atomic operations -------------------------*/
+/* To be compatible with Power7, use GCC built-in functions for 16 bit
+ * operations */
+
+#ifndef RTE_FORCE_INTRINSICS
+static inline int
+rte_atomic16_cmpset(volatile uint16_t *dst, uint16_t exp, uint16_t src)
+{
+	return __atomic_compare_exchange(dst, &exp, &src, 0, __ATOMIC_ACQUIRE,
+		__ATOMIC_ACQUIRE) ? 1 : 0;
+}
+
+static inline int rte_atomic16_test_and_set(rte_atomic16_t *v)
+{
+	return rte_atomic16_cmpset((volatile uint16_t *)&v->cnt, 0, 1);
+}
+
+static inline void
+rte_atomic16_inc(rte_atomic16_t *v)
+{
+	__atomic_add_fetch(&v->cnt, 1, __ATOMIC_ACQUIRE);
+}
+
+static inline void
+rte_atomic16_dec(rte_atomic16_t *v)
+{
+	__atomic_sub_fetch(&v->cnt, 1, __ATOMIC_ACQUIRE);
+}
+
+static inline int rte_atomic16_inc_and_test(rte_atomic16_t *v)
+{
+	return (__atomic_add_fetch(&v->cnt, 1, __ATOMIC_ACQUIRE) == 0);
+}
+
+static inline int rte_atomic16_dec_and_test(rte_atomic16_t *v)
+{
+	return (__atomic_sub_fetch(&v->cnt, 1, __ATOMIC_ACQUIRE) == 0);
+}
+
+/*------------------------- 32 bit atomic operations -------------------------*/
+
+static inline int
+rte_atomic32_cmpset(volatile uint32_t *dst, uint32_t exp, uint32_t src)
+{
+	unsigned int ret = 0;
+
+	asm volatile(
+			"\tlwsync\n"
+			"1:\tlwarx %[ret], 0, %[dst]\n"
+			"cmplw %[exp], %[ret]\n"
+			"bne 2f\n"
+			"stwcx. %[src], 0, %[dst]\n"
+			"bne- 1b\n"
+			"li %[ret], 1\n"
+			"b 3f\n"
+			"2:\n"
+			"stwcx. %[ret], 0, %[dst]\n"
+			"li %[ret], 0\n"
+			"3:\n"
+			"isync\n"
+			: [ret] "=&r" (ret), "=m" (*dst)
+			: [dst] "r" (dst),
+			  [exp] "r" (exp),
+			  [src] "r" (src),
+			  "m" (*dst)
+			: "cc", "memory");
+
+	return ret;
+}
+
+static inline int rte_atomic32_test_and_set(rte_atomic32_t *v)
+{
+	return rte_atomic32_cmpset((volatile uint32_t *)&v->cnt, 0, 1);
+}
+
+static inline void
+rte_atomic32_inc(rte_atomic32_t *v)
+{
+	int t;
+
+	asm volatile(
+			"1: lwarx %[t],0,%[cnt]\n"
+			"addic %[t],%[t],1\n"
+			"stwcx. %[t],0,%[cnt]\n"
+			"bne- 1b\n"
+			: [t] "=&r" (t), "=m" (v->cnt)
+			: [cnt] "r" (&v->cnt), "m" (v->cnt)
+			: "cc", "xer", "memory");
+}
+
+static inline void
+rte_atomic32_dec(rte_atomic32_t *v)
+{
+	int t;
+
+	asm volatile(
+			"1: lwarx %[t],0,%[cnt]\n"
+			"addic %[t],%[t],-1\n"
+			"stwcx. %[t],0,%[cnt]\n"
+			"bne- 1b\n"
+			: [t] "=&r" (t), "=m" (v->cnt)
+			: [cnt] "r" (&v->cnt), "m" (v->cnt)
+			: "cc", "xer", "memory");
+}
+
+static inline int rte_atomic32_inc_and_test(rte_atomic32_t *v)
+{
+	int ret;
+
+	asm volatile(
+			"\n\tlwsync\n"
+			"1: lwarx %[ret],0,%[cnt]\n"
+			"addic	%[ret],%[ret],1\n"
+			"stwcx. %[ret],0,%[cnt]\n"
+			"bne- 1b\n"
+			"isync\n"
+			: [ret] "=&r" (ret)
+			: [cnt] "r" (&v->cnt)
+			: "cc", "xer", "memory");
+
+	return (ret == 0);
+}
+
+static inline int rte_atomic32_dec_and_test(rte_atomic32_t *v)
+{
+	int ret;
+
+	asm volatile(
+			"\n\tlwsync\n"
+			"1: lwarx %[ret],0,%[cnt]\n"
+			"addic %[ret],%[ret],-1\n"
+			"stwcx. %[ret],0,%[cnt]\n"
+			"bne- 1b\n"
+			"isync\n"
+			: [ret] "=&r" (ret)
+			: [cnt] "r" (&v->cnt)
+			: "cc", "xer", "memory");
+
+	return (ret == 0);
+}
+/*------------------------- 64 bit atomic operations -------------------------*/
+
+static inline int
+rte_atomic64_cmpset(volatile uint64_t *dst, uint64_t exp, uint64_t src)
+{
+	unsigned int ret = 0;
+
+	asm volatile (
+			"\tlwsync\n"
+			"1: ldarx %[ret], 0, %[dst]\n"
+			"cmpld %[exp], %[ret]\n"
+			"bne 2f\n"
+			"stdcx. %[src], 0, %[dst]\n"
+			"bne- 1b\n"
+			"li %[ret], 1\n"
+			"b 3f\n"
+			"2:\n"
+			"stdcx. %[ret], 0, %[dst]\n"
+			"li %[ret], 0\n"
+			"3:\n"
+			"isync\n"
+			: [ret] "=&r" (ret), "=m" (*dst)
+			: [dst] "r" (dst),
+			  [exp] "r" (exp),
+			  [src] "r" (src),
+			  "m" (*dst)
+			: "cc", "memory");
+	return ret;
+}
+
+static inline void
+rte_atomic64_init(rte_atomic64_t *v)
+{
+	v->cnt = 0;
+}
+
+static inline int64_t
+rte_atomic64_read(rte_atomic64_t *v)
+{
+	long ret;
+
+	asm volatile("ld%U1%X1 %[ret],%[cnt]"
+		: [ret] "=r"(ret)
+		: [cnt] "m"(v->cnt));
+
+	return ret;
+}
+
+static inline void
+rte_atomic64_set(rte_atomic64_t *v, int64_t new_value)
+{
+	asm volatile("std%U0%X0 %[new_value],%[cnt]"
+		: [cnt] "=m"(v->cnt)
+		: [new_value] "r"(new_value));
+}
+
+static inline void
+rte_atomic64_add(rte_atomic64_t *v, int64_t inc)
+{
+	long t;
+
+	asm volatile(
+			"1: ldarx %[t],0,%[cnt]\n"
+			"add %[t],%[inc],%[t]\n"
+			"stdcx. %[t],0,%[cnt]\n"
+			"bne- 1b\n"
+			: [t] "=&r" (t), "=m" (v->cnt)
+			: [cnt] "r" (&v->cnt), [inc] "r" (inc), "m" (v->cnt)
+			: "cc", "memory");
+}
+
+static inline void
+rte_atomic64_sub(rte_atomic64_t *v, int64_t dec)
+{
+	long t;
+
+	asm volatile(
+			"1: ldarx %[t],0,%[cnt]\n"
+			"subf %[t],%[dec],%[t]\n"
+			"stdcx. %[t],0,%[cnt]\n"
+			"bne- 1b\n"
+			: [t] "=&r" (t), "+m" (v->cnt)
+			: [cnt] "r" (&v->cnt), [dec] "r" (dec), "m" (v->cnt)
+			: "cc", "memory");
+}
+
+static inline void
+rte_atomic64_inc(rte_atomic64_t *v)
+{
+	long t;
+
+	asm volatile(
+			"1: ldarx %[t],0,%[cnt]\n"
+			"addic %[t],%[t],1\n"
+			"stdcx. %[t],0,%[cnt]\n"
+			"bne- 1b\n"
+			: [t] "=&r" (t), "+m" (v->cnt)
+			: [cnt] "r" (&v->cnt), "m" (v->cnt)
+			: "cc", "xer", "memory");
+}
+
+static inline void
+rte_atomic64_dec(rte_atomic64_t *v)
+{
+	long t;
+
+	asm volatile(
+			"1: ldarx %[t],0,%[cnt]\n"
+			"addic %[t],%[t],-1\n"
+			"stdcx. %[t],0,%[cnt]\n"
+			"bne- 1b\n"
+			: [t] "=&r" (t), "+m" (v->cnt)
+			: [cnt] "r" (&v->cnt), "m" (v->cnt)
+			: "cc", "xer", "memory");
+}
+
+static inline int64_t
+rte_atomic64_add_return(rte_atomic64_t *v, int64_t inc)
+{
+	long ret;
+
+	asm volatile(
+			"\n\tlwsync\n"
+			"1: ldarx %[ret],0,%[cnt]\n"
+			"add %[ret],%[inc],%[ret]\n"
+			"stdcx. %[ret],0,%[cnt]\n"
+			"bne- 1b\n"
+			"isync\n"
+			: [ret] "=&r" (ret)
+			: [inc] "r" (inc), [cnt] "r" (&v->cnt)
+			: "cc", "memory");
+
+	return ret;
+}
+
+static inline int64_t
+rte_atomic64_sub_return(rte_atomic64_t *v, int64_t dec)
+{
+	long ret;
+
+	asm volatile(
+			"\n\tlwsync\n"
+			"1: ldarx %[ret],0,%[cnt]\n"
+			"subf %[ret],%[dec],%[ret]\n"
+			"stdcx. %[ret],0,%[cnt]\n"
+			"bne- 1b\n"
+			"isync\n"
+			: [ret] "=&r" (ret)
+			: [dec] "r" (dec), [cnt] "r" (&v->cnt)
+			: "cc", "memory");
+
+	return ret;
+}
+
+static inline int rte_atomic64_inc_and_test(rte_atomic64_t *v)
+{
+	long ret;
+
+	asm volatile(
+			"\n\tlwsync\n"
+			"1: ldarx %[ret],0,%[cnt]\n"
+			"addic %[ret],%[ret],1\n"
+			"stdcx. %[ret],0,%[cnt]\n"
+			"bne- 1b\n"
+			"isync\n"
+			: [ret] "=&r" (ret)
+			: [cnt] "r" (&v->cnt)
+			: "cc", "xer", "memory");
+
+	return (ret == 0);
+}
+
+static inline int rte_atomic64_dec_and_test(rte_atomic64_t *v)
+{
+	long ret;
+
+	asm volatile(
+			"\n\tlwsync\n"
+			"1: ldarx %[ret],0,%[cnt]\n"
+			"addic %[ret],%[ret],-1\n"
+			"stdcx. %[ret],0,%[cnt]\n"
+			"bne- 1b\n"
+			"isync\n"
+			: [ret] "=&r" (ret)
+			: [cnt] "r" (&v->cnt)
+			: "cc", "xer", "memory");
+
+	return (ret == 0);
+}
+
+static inline int rte_atomic64_test_and_set(rte_atomic64_t *v)
+{
+	return rte_atomic64_cmpset((volatile uint64_t *)&v->cnt, 0, 1);
+}
+
+/**
+ * Atomically set a 64-bit counter to 0.
+ *
+ * @param v
+ *   A pointer to the atomic counter.
+ */
+static inline void rte_atomic64_clear(rte_atomic64_t *v)
+{
+	v->cnt = 0;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_ATOMIC_PPC_64_H_ */
+
-- 
1.7.1

[dpdk-dev] [PATCH v5 03/14] Add byte order operations for IBM Power architecture

[Chao Zhu]

This patch adds architecture specific byte order operations for IBM Power
architecture. Power architecture support both big endian and little
endian. This patch also adds a RTE_ARCH_BIG_ENDIAN micro.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 config/defconfig_ppc_64-power8-linuxapp-gcc        |    1 +
 .../common/include/arch/ppc_64/rte_byteorder.h     |  150 ++++++++++++++++++++
 2 files changed, 151 insertions(+), 0 deletions(-)
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_byteorder.h

diff --git a/config/defconfig_ppc_64-power8-linuxapp-gcc b/config/defconfig_ppc_64-power8-linuxapp-gcc
index b023336..4060eca 100644
--- a/config/defconfig_ppc_64-power8-linuxapp-gcc
+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
@@ -34,6 +34,7 @@ CONFIG_RTE_MACHINE="power8"
 
 CONFIG_RTE_ARCH="ppc_64"
 CONFIG_RTE_ARCH_PPC_64=y
+CONFIG_RTE_ARCH_BIG_ENDIAN=y
 
 CONFIG_RTE_TOOLCHAIN="gcc"
 CONFIG_RTE_TOOLCHAIN_GCC=y
diff --git a/lib/librte_eal/common/include/arch/ppc_64/rte_byteorder.h b/lib/librte_eal/common/include/arch/ppc_64/rte_byteorder.h
new file mode 100644
index 0000000..e457cf7
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/ppc_64/rte_byteorder.h
@@ -0,0 +1,150 @@
+/*
+ *   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.
+*/
+
+/* Inspired from FreeBSD src/sys/powerpc/include/endian.h
+ * Copyright (c) 1987, 1991, 1993
+ * The Regents of the University of California.  All rights reserved.
+*/
+
+#ifndef _RTE_BYTEORDER_PPC_64_H_
+#define _RTE_BYTEORDER_PPC_64_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "generic/rte_byteorder.h"
+
+/*
+ * An architecture-optimized byte swap for a 16-bit value.
+ *
+ * Do not use this function directly. The preferred function is rte_bswap16().
+ */
+static inline uint16_t rte_arch_bswap16(uint16_t _x)
+{
+	return ((_x >> 8) | ((_x << 8) & 0xff00));
+}
+
+/*
+ * An architecture-optimized byte swap for a 32-bit value.
+ *
+ * Do not use this function directly. The preferred function is rte_bswap32().
+ */
+static inline uint32_t rte_arch_bswap32(uint32_t _x)
+{
+	return ((_x >> 24) | ((_x >> 8) & 0xff00) | ((_x << 8) & 0xff0000) |
+		((_x << 24) & 0xff000000));
+}
+
+/*
+ * An architecture-optimized byte swap for a 64-bit value.
+ *
+  * Do not use this function directly. The preferred function is rte_bswap64().
+ */
+/* 64-bit mode */
+static inline uint64_t rte_arch_bswap64(uint64_t _x)
+{
+	return ((_x >> 56) | ((_x >> 40) & 0xff00) | ((_x >> 24) & 0xff0000) |
+		((_x >> 8) & 0xff000000) | ((_x << 8) & (0xffULL << 32)) |
+		((_x << 24) & (0xffULL << 40)) |
+		((_x << 40) & (0xffULL << 48)) | ((_x << 56)));
+}
+
+#ifndef RTE_FORCE_INTRINSICS
+#define rte_bswap16(x) ((uint16_t)(__builtin_constant_p(x) ?		\
+				   rte_constant_bswap16(x) :		\
+				   rte_arch_bswap16(x)))
+
+#define rte_bswap32(x) ((uint32_t)(__builtin_constant_p(x) ?		\
+				   rte_constant_bswap32(x) :		\
+				   rte_arch_bswap32(x)))
+
+#define rte_bswap64(x) ((uint64_t)(__builtin_constant_p(x) ?		\
+				   rte_constant_bswap64(x) :		\
+				   rte_arch_bswap64(x)))
+#else
+/*
+ * __builtin_bswap16 is only available gcc 4.8 and upwards
+ */
+#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8)
+#define rte_bswap16(x) ((uint16_t)(__builtin_constant_p(x) ?		\
+				   rte_constant_bswap16(x) :		\
+				   rte_arch_bswap16(x)))
+#endif
+#endif
+
+/* Power 8 have both little endian and big endian mode
+ * Power 7 only support big endian
+ */
+#ifndef RTE_ARCH_BIG_ENDIAN
+
+#define rte_cpu_to_le_16(x) (x)
+#define rte_cpu_to_le_32(x) (x)
+#define rte_cpu_to_le_64(x) (x)
+
+#define rte_cpu_to_be_16(x) rte_bswap16(x)
+#define rte_cpu_to_be_32(x) rte_bswap32(x)
+#define rte_cpu_to_be_64(x) rte_bswap64(x)
+
+#define rte_le_to_cpu_16(x) (x)
+#define rte_le_to_cpu_32(x) (x)
+#define rte_le_to_cpu_64(x) (x)
+
+#define rte_be_to_cpu_16(x) rte_bswap16(x)
+#define rte_be_to_cpu_32(x) rte_bswap32(x)
+#define rte_be_to_cpu_64(x) rte_bswap64(x)
+
+#else
+
+#define rte_cpu_to_le_16(x) rte_bswap16(x)
+#define rte_cpu_to_le_32(x) rte_bswap32(x)
+#define rte_cpu_to_le_64(x) rte_bswap64(x)
+
+#define rte_cpu_to_be_16(x) (x)
+#define rte_cpu_to_be_32(x) (x)
+#define rte_cpu_to_be_64(x) (x)
+
+#define rte_le_to_cpu_16(x) rte_bswap16(x)
+#define rte_le_to_cpu_32(x) rte_bswap32(x)
+#define rte_le_to_cpu_64(x) rte_bswap64(x)
+
+#define rte_be_to_cpu_16(x) (x)
+#define rte_be_to_cpu_32(x) (x)
+#define rte_be_to_cpu_64(x) (x)
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_BYTEORDER_PPC_64_H_ */
+
-- 
1.7.1

[dpdk-dev] [PATCH v5 04/14] Add CPU cycle operations for IBM Power architecture

[Chao Zhu]

IBM Power architecture doesn't have TSC register to get CPU cycles. This
patch implements the time base register read instead of TSC register of
x86 on IBM Power architecture.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 .../common/include/arch/ppc_64/rte_cycles.h        |   88 ++++++++++++++++++++
 1 files changed, 88 insertions(+), 0 deletions(-)
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_cycles.h

diff --git a/lib/librte_eal/common/include/arch/ppc_64/rte_cycles.h b/lib/librte_eal/common/include/arch/ppc_64/rte_cycles.h
new file mode 100644
index 0000000..1eb5065
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/ppc_64/rte_cycles.h
@@ -0,0 +1,88 @@
+/*
+ *   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_PPC_64_H_
+#define _RTE_CYCLES_PPC_64_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)
+{
+	union {
+		uint64_t tsc_64;
+		struct {
+			uint32_t hi_32;
+			uint32_t lo_32;
+		};
+	} tsc;
+	uint32_t tmp;
+
+	asm volatile(
+			"0:\n"
+			"mftbu   %[hi32]\n"
+			"mftb    %[lo32]\n"
+			"mftbu   %[tmp]\n"
+			"cmpw    %[tmp],%[hi32]\n"
+			"bne     0b\n"
+			: [hi32] "=r"(tsc.hi_32), [lo32] "=r"(tsc.lo_32),
+			[tmp] "=r"(tmp)
+		    );
+	return tsc.tsc_64;
+}
+
+static inline uint64_t
+rte_rdtsc_precise(void)
+{
+	rte_mb();
+	return rte_rdtsc();
+}
+
+static inline uint64_t
+rte_get_tsc_cycles(void) { return rte_rdtsc(); }
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_CYCLES_PPC_64_H_ */
+
-- 
1.7.1

[dpdk-dev] [PATCH v5 05/14] Add prefetch operation for IBM Power architecture

[Chao Zhu]

This patch add architecture specific prefetch operations for IBM Power
architecture.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 .../common/include/arch/ppc_64/rte_prefetch.h      |   61 ++++++++++++++++++++
 1 files changed, 61 insertions(+), 0 deletions(-)
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_prefetch.h

diff --git a/lib/librte_eal/common/include/arch/ppc_64/rte_prefetch.h b/lib/librte_eal/common/include/arch/ppc_64/rte_prefetch.h
new file mode 100644
index 0000000..9df0d13
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/ppc_64/rte_prefetch.h
@@ -0,0 +1,61 @@
+/*
+ *   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_PREFETCH_PPC_64_H_
+#define _RTE_PREFETCH_PPC_64_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "generic/rte_prefetch.h"
+
+static inline void rte_prefetch0(volatile void *p)
+{
+	asm volatile ("dcbt 0,%[p],1" : : [p] "r" (p));
+}
+
+static inline void rte_prefetch1(volatile void *p)
+{
+	asm volatile ("dcbt 0,%[p],1" : : [p] "r" (p));
+}
+
+static inline void rte_prefetch2(volatile void *p)
+{
+	asm volatile ("dcbt 0,%[p],1" : : [p] "r" (p));
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_PREFETCH_PPC_64_H_ */
-- 
1.7.1

[dpdk-dev] [PATCH v5 06/14] Add spinlock operation for IBM Power architecture

[Chao Zhu]

This patch adds spinlock operations for IBM Power architecture.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 .../common/include/arch/ppc_64/rte_spinlock.h      |   73 ++++++++++++++++++++
 1 files changed, 73 insertions(+), 0 deletions(-)
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_spinlock.h

diff --git a/lib/librte_eal/common/include/arch/ppc_64/rte_spinlock.h b/lib/librte_eal/common/include/arch/ppc_64/rte_spinlock.h
new file mode 100644
index 0000000..cf8b81a
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/ppc_64/rte_spinlock.h
@@ -0,0 +1,73 @@
+/*
+ *   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_SPINLOCK_PPC_64_H_
+#define _RTE_SPINLOCK_PPC_64_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <rte_common.h>
+#include "generic/rte_spinlock.h"
+
+/* Fixme: Use intrinsics to implement the spinlock on Power architecture */
+
+#ifndef RTE_FORCE_INTRINSICS
+
+static inline void
+rte_spinlock_lock(rte_spinlock_t *sl)
+{
+	while (__sync_lock_test_and_set(&sl->locked, 1))
+		while (sl->locked)
+			rte_pause();
+}
+
+static inline void
+rte_spinlock_unlock(rte_spinlock_t *sl)
+{
+	__sync_lock_release(&sl->locked);
+}
+
+static inline int
+rte_spinlock_trylock(rte_spinlock_t *sl)
+{
+	return (__sync_lock_test_and_set(&sl->locked, 1) == 0);
+}
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_SPINLOCK_PPC_64_H_ */
-- 
1.7.1

[dpdk-dev] [PATCH v5 07/14] Add vector memcpy for IBM Power architecture

[Chao Zhu]

The SSE based memory copy in DPDK only support x86. This patch adds
altivec based memory copy functions for IBM Power architecture. This
patch includes altivec.h which requires GCC version>= 4.8.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 .../common/include/arch/ppc_64/rte_memcpy.h        |  226 ++++++++++++++++++++
 1 files changed, 226 insertions(+), 0 deletions(-)
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_memcpy.h

diff --git a/lib/librte_eal/common/include/arch/ppc_64/rte_memcpy.h b/lib/librte_eal/common/include/arch/ppc_64/rte_memcpy.h
new file mode 100644
index 0000000..9f3b062
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/ppc_64/rte_memcpy.h
@@ -0,0 +1,226 @@
+/*
+ *   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_MEMCPY_PPC_64_H_
+#define _RTE_MEMCPY_PPC_64_H_
+
+#include <stdint.h>
+#include <string.h>
+/*To include altivec.h, GCC version must  >= 4.8 */
+#include <altivec.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "generic/rte_memcpy.h"
+
+static inline void
+rte_mov16(uint8_t *dst, const uint8_t *src)
+{
+	vec_vsx_st(vec_vsx_ld(0, src), 0, dst);
+}
+
+static inline void
+rte_mov32(uint8_t *dst, const uint8_t *src)
+{
+	vec_vsx_st(vec_vsx_ld(0, src), 0, dst);
+	vec_vsx_st(vec_vsx_ld(16, src), 16, dst);
+}
+
+static inline void
+rte_mov48(uint8_t *dst, const uint8_t *src)
+{
+	vec_vsx_st(vec_vsx_ld(0, src), 0, dst);
+	vec_vsx_st(vec_vsx_ld(16, src), 16, dst);
+	vec_vsx_st(vec_vsx_ld(32, src), 32, dst);
+}
+
+static inline void
+rte_mov64(uint8_t *dst, const uint8_t *src)
+{
+	vec_vsx_st(vec_vsx_ld(0, src), 0, dst);
+	vec_vsx_st(vec_vsx_ld(16, src), 16, dst);
+	vec_vsx_st(vec_vsx_ld(32, src), 32, dst);
+	vec_vsx_st(vec_vsx_ld(48, src), 48, dst);
+}
+
+static inline void
+rte_mov128(uint8_t *dst, const uint8_t *src)
+{
+	vec_vsx_st(vec_vsx_ld(0, src), 0, dst);
+	vec_vsx_st(vec_vsx_ld(16, src), 16, dst);
+	vec_vsx_st(vec_vsx_ld(32, src), 32, dst);
+	vec_vsx_st(vec_vsx_ld(48, src), 48, dst);
+	vec_vsx_st(vec_vsx_ld(64, src), 64, dst);
+	vec_vsx_st(vec_vsx_ld(80, src), 80, dst);
+	vec_vsx_st(vec_vsx_ld(96, src), 96, dst);
+	vec_vsx_st(vec_vsx_ld(112, src), 112, dst);
+}
+
+static inline void
+rte_mov256(uint8_t *dst, const uint8_t *src)
+{
+	rte_mov128(dst, src);
+	rte_mov128(dst + 128, src + 128);
+}
+
+#define rte_memcpy(dst, src, n)              \
+	((__builtin_constant_p(n)) ?          \
+	memcpy((dst), (src), (n)) :          \
+	rte_memcpy_func((dst), (src), (n)))
+
+static inline void *
+rte_memcpy_func(void *dst, const void *src, size_t n)
+{
+	void *ret = dst;
+
+	/* We can't copy < 16 bytes using XMM registers so do it manually. */
+	if (n < 16) {
+		if (n & 0x01) {
+			*(uint8_t *)dst = *(const uint8_t *)src;
+			dst = (uint8_t *)dst + 1;
+			src = (const uint8_t *)src + 1;
+		}
+		if (n & 0x02) {
+			*(uint16_t *)dst = *(const uint16_t *)src;
+			dst = (uint16_t *)dst + 1;
+			src = (const uint16_t *)src + 1;
+		}
+		if (n & 0x04) {
+			*(uint32_t *)dst = *(const uint32_t *)src;
+			dst = (uint32_t *)dst + 1;
+			src = (const uint32_t *)src + 1;
+		}
+		if (n & 0x08)
+			*(uint64_t *)dst = *(const uint64_t *)src;
+		return ret;
+	}
+
+	/* Special fast cases for <= 128 bytes */
+	if (n <= 32) {
+		rte_mov16((uint8_t *)dst, (const uint8_t *)src);
+		rte_mov16((uint8_t *)dst - 16 + n,
+			(const uint8_t *)src - 16 + n);
+		return ret;
+	}
+
+	if (n <= 64) {
+		rte_mov32((uint8_t *)dst, (const uint8_t *)src);
+		rte_mov32((uint8_t *)dst - 32 + n,
+			(const uint8_t *)src - 32 + n);
+		return ret;
+	}
+
+	if (n <= 128) {
+		rte_mov64((uint8_t *)dst, (const uint8_t *)src);
+		rte_mov64((uint8_t *)dst - 64 + n,
+			(const uint8_t *)src - 64 + n);
+		return ret;
+	}
+
+	/*
+	 * For large copies > 128 bytes. This combination of 256, 64 and 16 byte
+	 * copies was found to be faster than doing 128 and 32 byte copies as
+	 * well.
+	 */
+	for ( ; n >= 256; n -= 256) {
+		rte_mov256((uint8_t *)dst, (const uint8_t *)src);
+		dst = (uint8_t *)dst + 256;
+		src = (const uint8_t *)src + 256;
+	}
+
+	/*
+	 * We split the remaining bytes (which will be less than 256) into
+	 * 64byte (2^6) chunks.
+	 * Using incrementing integers in the case labels of a switch statement
+	 * enourages the compiler to use a jump table. To get incrementing
+	 * integers, we shift the 2 relevant bits to the LSB position to first
+	 * get decrementing integers, and then subtract.
+	 */
+	switch (3 - (n >> 6)) {
+	case 0x00:
+		rte_mov64((uint8_t *)dst, (const uint8_t *)src);
+		n -= 64;
+		dst = (uint8_t *)dst + 64;
+		src = (const uint8_t *)src + 64;      /* fallthrough */
+	case 0x01:
+		rte_mov64((uint8_t *)dst, (const uint8_t *)src);
+		n -= 64;
+		dst = (uint8_t *)dst + 64;
+		src = (const uint8_t *)src + 64;      /* fallthrough */
+	case 0x02:
+		rte_mov64((uint8_t *)dst, (const uint8_t *)src);
+		n -= 64;
+		dst = (uint8_t *)dst + 64;
+		src = (const uint8_t *)src + 64;      /* fallthrough */
+	default:
+		;
+	}
+
+	/*
+	 * We split the remaining bytes (which will be less than 64) into
+	 * 16byte (2^4) chunks, using the same switch structure as above.
+	 */
+	switch (3 - (n >> 4)) {
+	case 0x00:
+		rte_mov16((uint8_t *)dst, (const uint8_t *)src);
+		n -= 16;
+		dst = (uint8_t *)dst + 16;
+		src = (const uint8_t *)src + 16;      /* fallthrough */
+	case 0x01:
+		rte_mov16((uint8_t *)dst, (const uint8_t *)src);
+		n -= 16;
+		dst = (uint8_t *)dst + 16;
+		src = (const uint8_t *)src + 16;      /* fallthrough */
+	case 0x02:
+		rte_mov16((uint8_t *)dst, (const uint8_t *)src);
+		n -= 16;
+		dst = (uint8_t *)dst + 16;
+		src = (const uint8_t *)src + 16;      /* fallthrough */
+	default:
+		;
+	}
+
+	/* Copy any remaining bytes, without going beyond end of buffers */
+	if (n != 0)
+		rte_mov16((uint8_t *)dst - 16 + n,
+			(const uint8_t *)src - 16 + n);
+	return ret;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_MEMCPY_PPC_64_H_ */
+
-- 
1.7.1

[dpdk-dev] [PATCH v5 08/14] Add CPU flag checking for IBM Power architecture

[Chao Zhu]

IBM Power processor doesn't have CPU flag hardware registers. This patch
uses aux vector software register to get CPU flags and add CPU flag
checking support for IBM Power architecture.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 app/test/test_cpuflags.c                           |   35 ++++
 .../common/include/arch/ppc_64/rte_cpuflags.h      |  187 ++++++++++++++++++++
 mk/rte.cpuflags.mk                                 |   17 ++
 3 files changed, 239 insertions(+), 0 deletions(-)
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_cpuflags.h

diff --git a/app/test/test_cpuflags.c b/app/test/test_cpuflags.c
index 82c0197..5aeba5d 100644
--- a/app/test/test_cpuflags.c
+++ b/app/test/test_cpuflags.c
@@ -80,6 +80,40 @@ test_cpuflags(void)
 	int result;
 	printf("\nChecking for flags from different registers...\n");
 
+#ifdef RTE_ARCH_PPC_64
+	printf("Check for PPC64:\t\t");
+	CHECK_FOR_FLAG(RTE_CPUFLAG_PPC64);
+
+	printf("Check for PPC32:\t\t");
+	CHECK_FOR_FLAG(RTE_CPUFLAG_PPC32);
+
+	printf("Check for VSX:\t\t");
+	CHECK_FOR_FLAG(RTE_CPUFLAG_VSX);
+
+	printf("Check for DFP:\t\t");
+	CHECK_FOR_FLAG(RTE_CPUFLAG_DFP);
+
+	printf("Check for FPU:\t\t");
+	CHECK_FOR_FLAG(RTE_CPUFLAG_FPU);
+
+	printf("Check for SMT:\t\t");
+	CHECK_FOR_FLAG(RTE_CPUFLAG_SMT);
+
+	printf("Check for MMU:\t\t");
+	CHECK_FOR_FLAG(RTE_CPUFLAG_MMU);
+
+	printf("Check for ALTIVEC:\t\t");
+	CHECK_FOR_FLAG(RTE_CPUFLAG_ALTIVEC);
+
+	printf("Check for ARCH_2_06:\t\t");
+	CHECK_FOR_FLAG(RTE_CPUFLAG_ARCH_2_06);
+
+	printf("Check for ARCH_2_07:\t\t");
+	CHECK_FOR_FLAG(RTE_CPUFLAG_ARCH_2_07);
+
+	printf("Check for ICACHE_SNOOP:\t\t");
+	CHECK_FOR_FLAG(RTE_CPUFLAG_ICACHE_SNOOP);
+#else
 	printf("Check for SSE:\t\t");
 	CHECK_FOR_FLAG(RTE_CPUFLAG_SSE);
 
@@ -117,6 +151,7 @@ test_cpuflags(void)
 	CHECK_FOR_FLAG(RTE_CPUFLAG_INVTSC);
 
 
+#endif
 
 	/*
 	 * Check if invalid data is handled properly
diff --git a/lib/librte_eal/common/include/arch/ppc_64/rte_cpuflags.h b/lib/librte_eal/common/include/arch/ppc_64/rte_cpuflags.h
new file mode 100644
index 0000000..df45047
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/ppc_64/rte_cpuflags.h
@@ -0,0 +1,187 @@
+/*
+ *   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_CPUFLAGS_PPC_64_H_
+#define _RTE_CPUFLAGS_PPC_64_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <elf.h>
+#include <fcntl.h>
+#include <assert.h>
+#include <unistd.h>
+
+#include "generic/rte_cpuflags.h"
+
+/* Symbolic values for the entries in the auxiliary table */
+#define AT_HWCAP  16
+#define AT_HWCAP2 26
+
+/* software based registers */
+enum cpu_register_t {
+	REG_HWCAP = 0,
+	REG_HWCAP2,
+};
+
+/**
+ * Enumeration of all CPU features supported
+ */
+enum rte_cpu_flag_t {
+	RTE_CPUFLAG_PPC_LE = 0,
+	RTE_CPUFLAG_TRUE_LE,
+	RTE_CPUFLAG_PSERIES_PERFMON_COMPAT,
+	RTE_CPUFLAG_VSX,
+	RTE_CPUFLAG_ARCH_2_06,
+	RTE_CPUFLAG_POWER6_EXT,
+	RTE_CPUFLAG_DFP,
+	RTE_CPUFLAG_PA6T,
+	RTE_CPUFLAG_ARCH_2_05,
+	RTE_CPUFLAG_ICACHE_SNOOP,
+	RTE_CPUFLAG_SMT,
+	RTE_CPUFLAG_BOOKE,
+	RTE_CPUFLAG_CELLBE,
+	RTE_CPUFLAG_POWER5_PLUS,
+	RTE_CPUFLAG_POWER5,
+	RTE_CPUFLAG_POWER4,
+	RTE_CPUFLAG_NOTB,
+	RTE_CPUFLAG_EFP_DOUBLE,
+	RTE_CPUFLAG_EFP_SINGLE,
+	RTE_CPUFLAG_SPE,
+	RTE_CPUFLAG_UNIFIED_CACHE,
+	RTE_CPUFLAG_4xxMAC,
+	RTE_CPUFLAG_MMU,
+	RTE_CPUFLAG_FPU,
+	RTE_CPUFLAG_ALTIVEC,
+	RTE_CPUFLAG_PPC601,
+	RTE_CPUFLAG_PPC64,
+	RTE_CPUFLAG_PPC32,
+	RTE_CPUFLAG_TAR,
+	RTE_CPUFLAG_LSEL,
+	RTE_CPUFLAG_EBB,
+	RTE_CPUFLAG_DSCR,
+	RTE_CPUFLAG_HTM,
+	RTE_CPUFLAG_ARCH_2_07,
+	/* The last item */
+	RTE_CPUFLAG_NUMFLAGS,/**< This should always be the last! */
+};
+
+static const struct feature_entry cpu_feature_table[] = {
+	FEAT_DEF(PPC_LE, 0x00000001, 0, REG_HWCAP,  0)
+	FEAT_DEF(TRUE_LE, 0x00000001, 0, REG_HWCAP,  1)
+	FEAT_DEF(PSERIES_PERFMON_COMPAT, 0x00000001, 0, REG_HWCAP,  6)
+	FEAT_DEF(VSX, 0x00000001, 0, REG_HWCAP,  7)
+	FEAT_DEF(ARCH_2_06, 0x00000001, 0, REG_HWCAP,  8)
+	FEAT_DEF(POWER6_EXT, 0x00000001, 0, REG_HWCAP,  9)
+	FEAT_DEF(DFP, 0x00000001, 0, REG_HWCAP,  10)
+	FEAT_DEF(PA6T, 0x00000001, 0, REG_HWCAP,  11)
+	FEAT_DEF(ARCH_2_05, 0x00000001, 0, REG_HWCAP,  12)
+	FEAT_DEF(ICACHE_SNOOP, 0x00000001, 0, REG_HWCAP,  13)
+	FEAT_DEF(SMT, 0x00000001, 0, REG_HWCAP,  14)
+	FEAT_DEF(BOOKE, 0x00000001, 0, REG_HWCAP,  15)
+	FEAT_DEF(CELLBE, 0x00000001, 0, REG_HWCAP,  16)
+	FEAT_DEF(POWER5_PLUS, 0x00000001, 0, REG_HWCAP,  17)
+	FEAT_DEF(POWER5, 0x00000001, 0, REG_HWCAP,  18)
+	FEAT_DEF(POWER4, 0x00000001, 0, REG_HWCAP,  19)
+	FEAT_DEF(NOTB, 0x00000001, 0, REG_HWCAP,  20)
+	FEAT_DEF(EFP_DOUBLE, 0x00000001, 0, REG_HWCAP,  21)
+	FEAT_DEF(EFP_SINGLE, 0x00000001, 0, REG_HWCAP,  22)
+	FEAT_DEF(SPE, 0x00000001, 0, REG_HWCAP,  23)
+	FEAT_DEF(UNIFIED_CACHE, 0x00000001, 0, REG_HWCAP,  24)
+	FEAT_DEF(4xxMAC, 0x00000001, 0, REG_HWCAP,  25)
+	FEAT_DEF(MMU, 0x00000001, 0, REG_HWCAP,  26)
+	FEAT_DEF(FPU, 0x00000001, 0, REG_HWCAP,  27)
+	FEAT_DEF(ALTIVEC, 0x00000001, 0, REG_HWCAP,  28)
+	FEAT_DEF(PPC601, 0x00000001, 0, REG_HWCAP,  29)
+	FEAT_DEF(PPC64, 0x00000001, 0, REG_HWCAP,  30)
+	FEAT_DEF(PPC32, 0x00000001, 0, REG_HWCAP,  31)
+	FEAT_DEF(TAR, 0x00000001, 0, REG_HWCAP2,  26)
+	FEAT_DEF(LSEL, 0x00000001, 0, REG_HWCAP2,  27)
+	FEAT_DEF(EBB, 0x00000001, 0, REG_HWCAP2,  28)
+	FEAT_DEF(DSCR, 0x00000001, 0, REG_HWCAP2,  29)
+	FEAT_DEF(HTM, 0x00000001, 0, REG_HWCAP2,  30)
+	FEAT_DEF(ARCH_2_07, 0x00000001, 0, REG_HWCAP2,  31)
+};
+
+/*
+ * Read AUXV software register and get cpu features for Power
+ */
+static inline void
+rte_cpu_get_features(__attribute__((unused)) uint32_t leaf,
+	__attribute__((unused)) uint32_t subleaf, cpuid_registers_t out)
+{
+	int auxv_fd;
+	Elf64_auxv_t auxv;
+
+	auxv_fd = open("/proc/self/auxv", O_RDONLY);
+	assert(auxv_fd);
+	while (read(auxv_fd, &auxv,
+		sizeof(Elf64_auxv_t)) == sizeof(Elf64_auxv_t)) {
+		if (auxv.a_type == AT_HWCAP)
+			out[REG_HWCAP] = auxv.a_un.a_val;
+		else if (auxv.a_type == AT_HWCAP2)
+			out[REG_HWCAP2] = auxv.a_un.a_val;
+	}
+}
+
+/*
+ * Checks if a particular flag is available on current machine.
+ */
+static inline int
+rte_cpu_get_flag_enabled(enum rte_cpu_flag_t feature)
+{
+	const struct feature_entry *feat;
+	cpuid_registers_t regs = {0};
+
+	if (feature >= RTE_CPUFLAG_NUMFLAGS)
+		/* Flag does not match anything in the feature tables */
+		return -ENOENT;
+
+	feat = &cpu_feature_table[feature];
+
+	if (!feat->leaf)
+		/* This entry in the table wasn't filled out! */
+		return -EFAULT;
+
+	/* get the cpuid leaf containing the desired feature */
+	rte_cpu_get_features(feat->leaf, feat->subleaf, regs);
+
+	/* check if the feature is enabled */
+	return (regs[feat->reg] >> feat->bit) & 1;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_CPUFLAGS_PPC_64_H_ */
diff --git a/mk/rte.cpuflags.mk b/mk/rte.cpuflags.mk
index 65332e1..f595cd0 100644
--- a/mk/rte.cpuflags.mk
+++ b/mk/rte.cpuflags.mk
@@ -89,6 +89,23 @@ ifneq ($(filter $(AUTO_CPUFLAGS),__AVX2__),)
 CPUFLAGS += AVX2
 endif
 
+# IBM Power CPU flags
+ifneq ($(filter $(AUTO_CPUFLAGS),__PPC64__),)
+CPUFLAGS += PPC64
+endif
+
+ifneq ($(filter $(AUTO_CPUFLAGS),__PPC32__),)
+CPUFLAGS += PPC32
+endif
+
+ifneq ($(filter $(AUTO_CPUFLAGS),__vector),)
+CPUFLAGS += ALTIVEC
+endif
+
+ifneq ($(filter $(AUTO_CPUFLAGS),__builtin_vsx_xvnmaddadp),)
+CPUFLAGS += VSX
+endif
+
 MACHINE_CFLAGS += $(addprefix -DRTE_MACHINE_CPUFLAG_,$(CPUFLAGS))
 
 # To strip whitespace
-- 
1.7.1

[dpdk-dev] [PATCH v5 09/14] Remove iopl operation for IBM Power architecture

[Chao Zhu]

iopl() call is mostly for the i386 architecture. In Power and other
architecture, it doesn't exist. This patch modified rte_eal_iopl_init()
and make it return -1 for Power and other architecture. Thus
rte_config.flags will not contain EAL_FLG_HIGH_IOPL flag for other
architecture.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 lib/librte_eal/linuxapp/eal/eal.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 7a1d087..8c0223f 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -50,7 +50,9 @@
 #include <errno.h>
 #include <sys/mman.h>
 #include <sys/queue.h>
+#if defined(RTE_ARCH_X86_64) || defined(RTE_ARCH_I686)
 #include <sys/io.h>
+#endif
 
 #include <rte_common.h>
 #include <rte_debug.h>
@@ -752,13 +754,19 @@ rte_eal_mcfg_complete(void)
 
 /*
  * Request iopl privilege for all RPL, returns 0 on success
+ * iopl() call is mostly for the i386 architecture. For other architectures,
+ * return -1 to indicate IO priviledge can't be changed in this way.
  */
 int
 rte_eal_iopl_init(void)
 {
+#if defined(RTE_ARCH_X86_64) || defined(RTE_ARCH_I686)
 	if (iopl(3) != 0)
 		return -1;
 	return 0;
+#else
+	return -1;
+#endif
 }
 
 /* Launch threads, called at application init(). */
-- 
1.7.1

[dpdk-dev] [PATCH v5 10/14] Add cache size define for IBM Power Architecture

[Chao Zhu]

IBM Power architecture has different cache line size (128 bytes) than
x86 (64 bytes). This patch defines CACHE_LINE_SIZE to 128 bytes to
override the default value 64 bytes to support IBM Power Architecture.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 app/test/test_malloc.c     |    8 ++++----
 mk/arch/ppc_64/rte.vars.mk |    2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/app/test/test_malloc.c b/app/test/test_malloc.c
index ee34ca3..63e6b32 100644
--- a/app/test/test_malloc.c
+++ b/app/test/test_malloc.c
@@ -300,9 +300,9 @@ test_big_alloc(void)
 	size_t size =rte_str_to_size(MALLOC_MEMZONE_SIZE)*2;
 	int align = 0;
 #ifndef RTE_LIBRTE_MALLOC_DEBUG
-	int overhead = 64 + 64;
+	int overhead = CACHE_LINE_SIZE + CACHE_LINE_SIZE;
 #else
-	int overhead = 64 + 64 + 64;
+	int overhead = CACHE_LINE_SIZE + CACHE_LINE_SIZE + CACHE_LINE_SIZE;
 #endif
 
 	rte_malloc_get_socket_stats(socket, &pre_stats);
@@ -356,9 +356,9 @@ test_multi_alloc_statistics(void)
 #ifndef RTE_LIBRTE_MALLOC_DEBUG
 	int trailer_size = 0;
 #else
-	int trailer_size = 64;
+	int trailer_size = CACHE_LINE_SIZE;
 #endif
-	int overhead = 64 + trailer_size;
+	int overhead = CACHE_LINE_SIZE + trailer_size;
 
 	rte_malloc_get_socket_stats(socket, &pre_stats);
 
diff --git a/mk/arch/ppc_64/rte.vars.mk b/mk/arch/ppc_64/rte.vars.mk
index 363fcd1..dfdeaea 100644
--- a/mk/arch/ppc_64/rte.vars.mk
+++ b/mk/arch/ppc_64/rte.vars.mk
@@ -32,7 +32,7 @@
 ARCH  ?= powerpc
 CROSS ?=
 
-CPU_CFLAGS  ?= -m64
+CPU_CFLAGS  ?= -m64 -DCACHE_LINE_SIZE=128
 CPU_LDFLAGS ?=
 CPU_ASFLAGS ?= -felf64
 
-- 
1.7.1

[dpdk-dev] [PATCH v5 11/14] Add huge page size define for IBM Power architecture

[Chao Zhu]

IBM Power architecture has different huge page sizes (16MB, 16GB) than
x86.This patch defines RTE_PGSIZE_16M and RTE_PGSIZE_16G in the
rte_page_sizes enum variable and adds huge page size support of DPDK
for IBM Power architecture.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 app/test/test_memzone.c                     |  123 ++++++++++++++++++++++++++-
 lib/librte_eal/common/eal_common_memzone.c  |   19 +++-
 lib/librte_eal/common/include/rte_memory.h  |    9 ++-
 lib/librte_eal/common/include/rte_memzone.h |    8 ++
 lib/librte_eal/linuxapp/eal/eal.c           |    9 ++-
 5 files changed, 156 insertions(+), 12 deletions(-)

diff --git a/app/test/test_memzone.c b/app/test/test_memzone.c
index 381f643..387dbbc 100644
--- a/app/test/test_memzone.c
+++ b/app/test/test_memzone.c
@@ -133,6 +133,8 @@ test_memzone_reserve_flags(void)
 	const struct rte_memseg *ms;
 	int hugepage_2MB_avail = 0;
 	int hugepage_1GB_avail = 0;
+	int hugepage_16MB_avail = 0;
+	int hugepage_16GB_avail = 0;
 	const size_t size = 100;
 	int i = 0;
 	ms = rte_eal_get_physmem_layout();
@@ -141,12 +143,20 @@ test_memzone_reserve_flags(void)
 			hugepage_2MB_avail = 1;
 		if (ms[i].hugepage_sz == RTE_PGSIZE_1G)
 			hugepage_1GB_avail = 1;
+		if (ms[i].hugepage_sz == RTE_PGSIZE_16M)
+			hugepage_16MB_avail = 1;
+		if (ms[i].hugepage_sz == RTE_PGSIZE_16G)
+			hugepage_16GB_avail = 1;
 	}
-	/* Display the availability of 2MB and 1GB pages */
+	/* Display the availability of 2MB ,1GB, 16MB, 16GB pages */
 	if (hugepage_2MB_avail)
 		printf("2MB Huge pages available\n");
 	if (hugepage_1GB_avail)
 		printf("1GB Huge pages available\n");
+	if (hugepage_16MB_avail)
+		printf("16MB Huge pages available\n");
+	if (hugepage_16GB_avail)
+		printf("16GB Huge pages available\n");
 	/*
 	 * If 2MB pages available, check that a small memzone is correctly
 	 * reserved from 2MB huge pages when requested by the RTE_MEMZONE_2MB flag.
@@ -255,6 +265,117 @@ test_memzone_reserve_flags(void)
 			}
 		}
 	}
+	/*
+	 * This option is for IBM Power. If 16MB pages available, check
+	 * that a small memzone is correctly reserved from 16MB huge pages
+	 * when requested by the RTE_MEMZONE_16MB flag. Also check that
+	 * RTE_MEMZONE_SIZE_HINT_ONLY flag only defaults to an available
+	 * page size (i.e 16GB ) when 16MB pages are unavailable.
+	 */
+	if (hugepage_16MB_avail) {
+		mz = rte_memzone_reserve("flag_zone_16M", size, SOCKET_ID_ANY,
+				RTE_MEMZONE_16MB);
+		if (mz == NULL) {
+			printf("MEMZONE FLAG 16MB\n");
+			return -1;
+		}
+		if (mz->hugepage_sz != RTE_PGSIZE_16M) {
+			printf("hugepage_sz not equal 16M\n");
+			return -1;
+		}
+
+		mz = rte_memzone_reserve("flag_zone_16M_HINT", size,
+		SOCKET_ID_ANY, RTE_MEMZONE_16MB|RTE_MEMZONE_SIZE_HINT_ONLY);
+		if (mz == NULL) {
+			printf("MEMZONE FLAG 2MB\n");
+			return -1;
+		}
+		if (mz->hugepage_sz != RTE_PGSIZE_16M) {
+			printf("hugepage_sz not equal 16M\n");
+			return -1;
+		}
+
+		/* Check if 1GB huge pages are unavailable, that function fails
+		 * unless HINT flag is indicated
+		 */
+		if (!hugepage_16GB_avail) {
+			mz = rte_memzone_reserve("flag_zone_16G_HINT", size,
+				SOCKET_ID_ANY,
+				RTE_MEMZONE_16GB|RTE_MEMZONE_SIZE_HINT_ONLY);
+			if (mz == NULL) {
+				printf("MEMZONE FLAG 16GB & HINT\n");
+				return -1;
+			}
+			if (mz->hugepage_sz != RTE_PGSIZE_16M) {
+				printf("hugepage_sz not equal 16M\n");
+				return -1;
+			}
+
+			mz = rte_memzone_reserve("flag_zone_16G", size,
+				SOCKET_ID_ANY, RTE_MEMZONE_16GB);
+			if (mz != NULL) {
+				printf("MEMZONE FLAG 16GB\n");
+				return -1;
+			}
+		}
+	}
+	/*As with 16MB tests above for 16GB huge page requests*/
+	if (hugepage_16GB_avail) {
+		mz = rte_memzone_reserve("flag_zone_16G", size, SOCKET_ID_ANY,
+				RTE_MEMZONE_16GB);
+		if (mz == NULL) {
+			printf("MEMZONE FLAG 16GB\n");
+			return -1;
+		}
+		if (mz->hugepage_sz != RTE_PGSIZE_16G) {
+			printf("hugepage_sz not equal 16G\n");
+			return -1;
+		}
+
+		mz = rte_memzone_reserve("flag_zone_16G_HINT", size,
+		SOCKET_ID_ANY, RTE_MEMZONE_16GB|RTE_MEMZONE_SIZE_HINT_ONLY);
+		if (mz == NULL) {
+			printf("MEMZONE FLAG 16GB\n");
+			return -1;
+		}
+		if (mz->hugepage_sz != RTE_PGSIZE_16G) {
+			printf("hugepage_sz not equal 16G\n");
+			return -1;
+		}
+
+		/* Check if 1GB huge pages are unavailable, that function fails
+		 * unless HINT flag is indicated
+		 */
+		if (!hugepage_16MB_avail) {
+			mz = rte_memzone_reserve("flag_zone_16M_HINT", size,
+				SOCKET_ID_ANY,
+				RTE_MEMZONE_16MB|RTE_MEMZONE_SIZE_HINT_ONLY);
+			if (mz == NULL) {
+				printf("MEMZONE FLAG 16MB & HINT\n");
+				return -1;
+			}
+			if (mz->hugepage_sz != RTE_PGSIZE_16G) {
+				printf("hugepage_sz not equal 16G\n");
+				return -1;
+			}
+			mz = rte_memzone_reserve("flag_zone_16M", size,
+				SOCKET_ID_ANY, RTE_MEMZONE_16MB);
+			if (mz != NULL) {
+				printf("MEMZONE FLAG 16MB\n");
+				return -1;
+			}
+		}
+
+		if (hugepage_16MB_avail && hugepage_16GB_avail) {
+			mz = rte_memzone_reserve("flag_zone_16M_HINT", size,
+				SOCKET_ID_ANY,
+				RTE_MEMZONE_16MB|RTE_MEMZONE_16GB);
+			if (mz != NULL) {
+				printf("BOTH SIZES SET\n");
+				return -1;
+			}
+		}
+	}
 	return 0;
 }
 
diff --git a/lib/librte_eal/common/eal_common_memzone.c b/lib/librte_eal/common/eal_common_memzone.c
index 5acd9ce..f1fc4a7 100644
--- a/lib/librte_eal/common/eal_common_memzone.c
+++ b/lib/librte_eal/common/eal_common_memzone.c
@@ -216,10 +216,16 @@ memzone_reserve_aligned_thread_unsafe(const char *name, size_t len,
 
 		/* check flags for hugepage sizes */
 		if ((flags & RTE_MEMZONE_2MB) &&
-				free_memseg[i].hugepage_sz == RTE_PGSIZE_1G )
+				free_memseg[i].hugepage_sz == RTE_PGSIZE_1G)
 			continue;
 		if ((flags & RTE_MEMZONE_1GB) &&
-				free_memseg[i].hugepage_sz == RTE_PGSIZE_2M )
+				free_memseg[i].hugepage_sz == RTE_PGSIZE_2M)
+			continue;
+		if ((flags & RTE_MEMZONE_16MB) &&
+				free_memseg[i].hugepage_sz == RTE_PGSIZE_16G)
+			continue;
+		if ((flags & RTE_MEMZONE_16GB) &&
+				free_memseg[i].hugepage_sz == RTE_PGSIZE_16M)
 			continue;
 
 		/* this segment is the best until now */
@@ -256,7 +262,8 @@ memzone_reserve_aligned_thread_unsafe(const char *name, size_t len,
 		 * try allocating again without the size parameter otherwise -fail.
 		 */
 		if ((flags & RTE_MEMZONE_SIZE_HINT_ONLY)  &&
-		    ((flags & RTE_MEMZONE_1GB) || (flags & RTE_MEMZONE_2MB)))
+		    ((flags & RTE_MEMZONE_1GB) || (flags & RTE_MEMZONE_2MB)
+		|| (flags & RTE_MEMZONE_16MB) || (flags & RTE_MEMZONE_16GB)))
 			return memzone_reserve_aligned_thread_unsafe(name,
 				len, socket_id, 0, align, bound);
 
@@ -313,7 +320,8 @@ rte_memzone_reserve_aligned(const char *name, size_t len,
 	const struct rte_memzone *mz = NULL;
 
 	/* both sizes cannot be explicitly called for */
-	if ((flags & RTE_MEMZONE_1GB) && (flags & RTE_MEMZONE_2MB)) {
+	if (((flags & RTE_MEMZONE_1GB) && (flags & RTE_MEMZONE_2MB))
+		|| ((flags & RTE_MEMZONE_16MB) && (flags & RTE_MEMZONE_16GB))) {
 		rte_errno = EINVAL;
 		return NULL;
 	}
@@ -344,7 +352,8 @@ rte_memzone_reserve_bounded(const char *name, size_t len,
 	const struct rte_memzone *mz = NULL;
 
 	/* both sizes cannot be explicitly called for */
-	if ((flags & RTE_MEMZONE_1GB) && (flags & RTE_MEMZONE_2MB)) {
+	if (((flags & RTE_MEMZONE_1GB) && (flags & RTE_MEMZONE_2MB))
+		|| ((flags & RTE_MEMZONE_16MB) && (flags & RTE_MEMZONE_16GB))) {
 		rte_errno = EINVAL;
 		return NULL;
 	}
diff --git a/lib/librte_eal/common/include/rte_memory.h b/lib/librte_eal/common/include/rte_memory.h
index 4cf8ea9..2ed2637 100644
--- a/lib/librte_eal/common/include/rte_memory.h
+++ b/lib/librte_eal/common/include/rte_memory.h
@@ -53,9 +53,12 @@ extern "C" {
 #endif
 
 enum rte_page_sizes {
-	RTE_PGSIZE_4K = 1 << 12,
-	RTE_PGSIZE_2M = RTE_PGSIZE_4K << 9,
-	RTE_PGSIZE_1G = RTE_PGSIZE_2M <<9
+	RTE_PGSIZE_4K = 1ULL << 12,
+	RTE_PGSIZE_2M = 1ULL << 21,
+	RTE_PGSIZE_1G = 1ULL << 30,
+	RTE_PGSIZE_64K = 1ULL << 16,
+	RTE_PGSIZE_16M = 1ULL << 24,
+	RTE_PGSIZE_16G = 1ULL << 34
 };
 
 #define SOCKET_ID_ANY -1                    /**< Any NUMA socket. */
diff --git a/lib/librte_eal/common/include/rte_memzone.h b/lib/librte_eal/common/include/rte_memzone.h
index 5014409..7d47bff 100644
--- a/lib/librte_eal/common/include/rte_memzone.h
+++ b/lib/librte_eal/common/include/rte_memzone.h
@@ -60,6 +60,8 @@ extern "C" {
 
 #define RTE_MEMZONE_2MB            0x00000001   /**< Use 2MB pages. */
 #define RTE_MEMZONE_1GB            0x00000002   /**< Use 1GB pages. */
+#define RTE_MEMZONE_16MB            0x00000100   /**< Use 16MB pages. */
+#define RTE_MEMZONE_16GB            0x00000200   /**< Use 16GB pages. */
 #define RTE_MEMZONE_SIZE_HINT_ONLY 0x00000004   /**< Use available page size */
 
 /**
@@ -111,6 +113,8 @@ struct rte_memzone {
  *   taken from 1GB or 2MB hugepages.
  *   - RTE_MEMZONE_2MB - Reserve from 2MB pages
  *   - RTE_MEMZONE_1GB - Reserve from 1GB pages
+ *   - RTE_MEMZONE_16MB - Reserve from 16MB pages
+ *   - RTE_MEMZONE_16GB - Reserve from 16GB pages
  *   - RTE_MEMZONE_SIZE_HINT_ONLY - Allow alternative page size to be used if
  *                                  the requested page size is unavailable.
  *                                  If this flag is not set, the function
@@ -156,6 +160,8 @@ const struct rte_memzone *rte_memzone_reserve(const char *name,
  *   taken from 1GB or 2MB hugepages.
  *   - RTE_MEMZONE_2MB - Reserve from 2MB pages
  *   - RTE_MEMZONE_1GB - Reserve from 1GB pages
+ *   - RTE_MEMZONE_16MB - Reserve from 16MB pages
+ *   - RTE_MEMZONE_16GB - Reserve from 16GB pages
  *   - RTE_MEMZONE_SIZE_HINT_ONLY - Allow alternative page size to be used if
  *                                  the requested page size is unavailable.
  *                                  If this flag is not set, the function
@@ -206,6 +212,8 @@ const struct rte_memzone *rte_memzone_reserve_aligned(const char *name,
  *   taken from 1GB or 2MB hugepages.
  *   - RTE_MEMZONE_2MB - Reserve from 2MB pages
  *   - RTE_MEMZONE_1GB - Reserve from 1GB pages
+ *   - RTE_MEMZONE_16MB - Reserve from 16MB pages
+ *   - RTE_MEMZONE_16GB - Reserve from 16GB pages
  *   - RTE_MEMZONE_SIZE_HINT_ONLY - Allow alternative page size to be used if
  *                                  the requested page size is unavailable.
  *                                  If this flag is not set, the function
diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 8c0223f..8d2a546 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -455,9 +455,12 @@ eal_parse_base_virtaddr(const char *arg)
 		return -1;
 #endif
 
-	/* align the addr on 2M boundary */
-	internal_config.base_virtaddr = RTE_PTR_ALIGN_CEIL((uintptr_t)addr,
-	                                                   RTE_PGSIZE_2M);
+	/* align the addr on 16M boundary, 16MB is the minimum huge page
+	 * size on IBM Power architecture. If the addr is aligned to 16MB,
+	 * it can align to 2MB for x86. So this alignment can also be used
+	 * on x86 */
+	internal_config.base_virtaddr =
+		RTE_PTR_ALIGN_CEIL((uintptr_t)addr, RTE_PGSIZE_16M);
 
 	return 0;
 }
-- 
1.7.1

[dpdk-dev] [PATCH v5 12/14] Add eal memory support for IBM Power Architecture

[Chao Zhu]

The mmap of hugepage files on IBM Power starts from high address to low
address. This is different from x86. This patch modified the memory
segment detection code to get the correct memory segment layout on Power
architecture. This patch also added a commond ARCH_PPC_64 defination for
64 bit systems.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 config/defconfig_ppc_64-power8-linuxapp-gcc   |    1 +
 config/defconfig_x86_64-native-linuxapp-clang |    1 +
 config/defconfig_x86_64-native-linuxapp-gcc   |    1 +
 config/defconfig_x86_64-native-linuxapp-icc   |    1 +
 lib/librte_eal/linuxapp/eal/eal_memory.c      |   91 ++++++++++++++++++-------
 5 files changed, 71 insertions(+), 24 deletions(-)

diff --git a/config/defconfig_ppc_64-power8-linuxapp-gcc b/config/defconfig_ppc_64-power8-linuxapp-gcc
index 4060eca..89d623e 100644
--- a/config/defconfig_ppc_64-power8-linuxapp-gcc
+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
@@ -35,6 +35,7 @@ CONFIG_RTE_MACHINE="power8"
 CONFIG_RTE_ARCH="ppc_64"
 CONFIG_RTE_ARCH_PPC_64=y
 CONFIG_RTE_ARCH_BIG_ENDIAN=y
+CONFIG_RTE_ARCH_64=y
 
 CONFIG_RTE_TOOLCHAIN="gcc"
 CONFIG_RTE_TOOLCHAIN_GCC=y
diff --git a/config/defconfig_x86_64-native-linuxapp-clang b/config/defconfig_x86_64-native-linuxapp-clang
index bbda080..5f3074e 100644
--- a/config/defconfig_x86_64-native-linuxapp-clang
+++ b/config/defconfig_x86_64-native-linuxapp-clang
@@ -36,6 +36,7 @@ CONFIG_RTE_MACHINE="native"
 
 CONFIG_RTE_ARCH="x86_64"
 CONFIG_RTE_ARCH_X86_64=y
+CONFIG_RTE_ARCH_64=y
 
 CONFIG_RTE_TOOLCHAIN="clang"
 CONFIG_RTE_TOOLCHAIN_CLANG=y
diff --git a/config/defconfig_x86_64-native-linuxapp-gcc b/config/defconfig_x86_64-native-linuxapp-gcc
index 3de818a..60baf5b 100644
--- a/config/defconfig_x86_64-native-linuxapp-gcc
+++ b/config/defconfig_x86_64-native-linuxapp-gcc
@@ -36,6 +36,7 @@ CONFIG_RTE_MACHINE="native"
 
 CONFIG_RTE_ARCH="x86_64"
 CONFIG_RTE_ARCH_X86_64=y
+CONFIG_RTE_ARCH_64=y
 
 CONFIG_RTE_TOOLCHAIN="gcc"
 CONFIG_RTE_TOOLCHAIN_GCC=y
diff --git a/config/defconfig_x86_64-native-linuxapp-icc b/config/defconfig_x86_64-native-linuxapp-icc
index 795333b..71d1e28 100644
--- a/config/defconfig_x86_64-native-linuxapp-icc
+++ b/config/defconfig_x86_64-native-linuxapp-icc
@@ -36,6 +36,7 @@ CONFIG_RTE_MACHINE="native"
 
 CONFIG_RTE_ARCH="x86_64"
 CONFIG_RTE_ARCH_X86_64=y
+CONFIG_RTE_ARCH_64=y
 
 CONFIG_RTE_TOOLCHAIN="icc"
 CONFIG_RTE_TOOLCHAIN_ICC=y
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index f2454f4..e6cb919 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -316,11 +316,12 @@ map_all_hugepages(struct hugepage_file *hugepg_tbl,
 #endif
 			hugepg_tbl[i].filepath[sizeof(hugepg_tbl[i].filepath) - 1] = '\0';
 		}
-#ifndef RTE_ARCH_X86_64
-		/* for 32-bit systems, don't remap 1G pages, just reuse original
-		 * map address as final map address.
+#ifndef RTE_ARCH_64
+		/* for 32-bit systems, don't remap 1G and 16G pages, just reuse
+		 * original map address as final map address.
 		 */
-		else if (hugepage_sz == RTE_PGSIZE_1G){
+		else if ((hugepage_sz == RTE_PGSIZE_1G)
+			|| (hugepage_sz == RTE_PGSIZE_16G)) {
 			hugepg_tbl[i].final_va = hugepg_tbl[i].orig_va;
 			hugepg_tbl[i].orig_va = NULL;
 			continue;
@@ -335,9 +336,17 @@ map_all_hugepages(struct hugepage_file *hugepg_tbl,
 			 * physical block: count the number of
 			 * contiguous physical pages. */
 			for (j = i+1; j < hpi->num_pages[0] ; j++) {
+#ifdef RTE_ARCH_PPC_64
+				/* The physical addresses are sorted in
+				 * descending order on PPC64 */
+				if (hugepg_tbl[j].physaddr !=
+				    hugepg_tbl[j-1].physaddr - hugepage_sz)
+					break;
+#else
 				if (hugepg_tbl[j].physaddr !=
 				    hugepg_tbl[j-1].physaddr + hugepage_sz)
 					break;
+#endif
 			}
 			num_pages = j - i;
 			vma_len = num_pages * hugepage_sz;
@@ -412,11 +421,12 @@ remap_all_hugepages(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi)
 
 	while (i < hpi->num_pages[0]) {
 
-#ifndef RTE_ARCH_X86_64
-		/* for 32-bit systems, don't remap 1G pages, just reuse original
-		 * map address as final map address.
+#ifndef RTE_ARCH_64
+		/* for 32-bit systems, don't remap 1G pages and 16G pages,
+		 * just reuse original map address as final map address.
 		 */
-		if (hugepage_sz == RTE_PGSIZE_1G){
+		if ((hugepage_sz == RTE_PGSIZE_1G)
+			|| (hugepage_sz == RTE_PGSIZE_16G)) {
 			hugepg_tbl[i].final_va = hugepg_tbl[i].orig_va;
 			hugepg_tbl[i].orig_va = NULL;
 			i++;
@@ -428,8 +438,17 @@ remap_all_hugepages(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi)
 		 * physical block: count the number of
 		 * contiguous physical pages. */
 		for (j = i+1; j < hpi->num_pages[0] ; j++) {
-			if (hugepg_tbl[j].physaddr != hugepg_tbl[j-1].physaddr + hugepage_sz)
+#ifdef RTE_ARCH_PPC_64
+			/* The physical addresses are sorted in descending
+			 * order on PPC64 */
+			if (hugepg_tbl[j].physaddr !=
+				hugepg_tbl[j-1].physaddr - hugepage_sz)
 				break;
+#else
+			if (hugepg_tbl[j].physaddr !=
+				hugepg_tbl[j-1].physaddr + hugepage_sz)
+				break;
+#endif
 		}
 		num_pages = j - i;
 		vma_len = num_pages * hugepage_sz;
@@ -652,21 +671,21 @@ error:
 }
 
 /*
- * Sort the hugepg_tbl by physical address (lower addresses first). We
- * use a slow algorithm, but we won't have millions of pages, and this
- * is only done at init time.
+ * Sort the hugepg_tbl by physical address (lower addresses first on x86,
+ * higher address first on powerpc). We use a slow algorithm, but we won't
+ * have millions of pages, and this is only done at init time.
  */
 static int
 sort_by_physaddr(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi)
 {
 	unsigned i, j;
-	int smallest_idx;
-	uint64_t smallest_addr;
+	int compare_idx;
+	uint64_t compare_addr;
 	struct hugepage_file tmp;
 
 	for (i = 0; i < hpi->num_pages[0]; i++) {
-		smallest_addr = 0;
-		smallest_idx = -1;
+		compare_addr = 0;
+		compare_idx = -1;
 
 		/*
 		 * browse all entries starting at 'i', and find the
@@ -674,23 +693,28 @@ sort_by_physaddr(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi)
 		 */
 		for (j=i; j< hpi->num_pages[0]; j++) {
 
-			if (smallest_addr == 0 ||
-			    hugepg_tbl[j].physaddr < smallest_addr) {
-				smallest_addr = hugepg_tbl[j].physaddr;
-				smallest_idx = j;
+			if (compare_addr == 0 ||
+#ifdef RTE_ARCH_PPC_64
+				hugepg_tbl[j].physaddr > compare_addr) {
+#else
+				hugepg_tbl[j].physaddr < compare_addr) {
+#endif
+				compare_addr = hugepg_tbl[j].physaddr;
+				compare_idx = j;
 			}
 		}
 
 		/* should not happen */
-		if (smallest_idx == -1) {
+		if (compare_idx == -1) {
 			RTE_LOG(ERR, EAL, "%s(): error in physaddr sorting\n", __func__);
 			return -1;
 		}
 
 		/* swap the 2 entries in the table */
-		memcpy(&tmp, &hugepg_tbl[smallest_idx], sizeof(struct hugepage_file));
-		memcpy(&hugepg_tbl[smallest_idx], &hugepg_tbl[i],
-				sizeof(struct hugepage_file));
+		memcpy(&tmp, &hugepg_tbl[compare_idx],
+			sizeof(struct hugepage_file));
+		memcpy(&hugepg_tbl[compare_idx], &hugepg_tbl[i],
+			sizeof(struct hugepage_file));
 		memcpy(&hugepg_tbl[i], &tmp, sizeof(struct hugepage_file));
 	}
 	return 0;
@@ -1260,12 +1284,25 @@ rte_eal_hugepage_init(void)
 			new_memseg = 1;
 		else if (hugepage[i].size != hugepage[i-1].size)
 			new_memseg = 1;
+
+#ifdef RTE_ARCH_PPC_64
+		/* On PPC64 architecture, the mmap always start from higher
+		 * virtual address to lower address. Here, both the physical
+		 * address and virtual address are in descending order */
+		else if ((hugepage[i-1].physaddr - hugepage[i].physaddr) !=
+		    hugepage[i].size)
+			new_memseg = 1;
+		else if (((unsigned long)hugepage[i-1].final_va -
+		    (unsigned long)hugepage[i].final_va) != hugepage[i].size)
+			new_memseg = 1;
+#else
 		else if ((hugepage[i].physaddr - hugepage[i-1].physaddr) !=
 		    hugepage[i].size)
 			new_memseg = 1;
 		else if (((unsigned long)hugepage[i].final_va -
 		    (unsigned long)hugepage[i-1].final_va) != hugepage[i].size)
 			new_memseg = 1;
+#endif
 
 		if (new_memseg) {
 			j += 1;
@@ -1284,6 +1321,12 @@ rte_eal_hugepage_init(void)
 		}
 		/* continuation of previous memseg */
 		else {
+#ifdef RTE_ARCH_PPC_64
+		/* Use the phy and virt address of the last page as segment
+		 * address for IBM Power architecture */
+			mcfg->memseg[j].phys_addr = hugepage[i].physaddr;
+			mcfg->memseg[j].addr = hugepage[i].final_va;
+#endif
 			mcfg->memseg[j].len += mcfg->memseg[j].hugepage_sz;
 		}
 		hugepage[i].memseg_id = j;
-- 
1.7.1

[dpdk-dev] [PATCH v5 13/14] test_memzone:fix finding the second smallest segment

[Chao Zhu]

Curent implementation in test_memzone.c has bugs in finding the
second smallest memory segment. It's the last smallest memory segment,
but it's not the second smallest memory segment. This bug may cause test
failure in some cases. This patch fixes this bug.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 app/test/test_memzone.c |    9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/app/test/test_memzone.c b/app/test/test_memzone.c
index 387dbbc..1658006 100644
--- a/app/test/test_memzone.c
+++ b/app/test/test_memzone.c
@@ -797,10 +797,9 @@ test_memzone_reserve_memory_in_smallest_segment(void)
 
 			/* set new smallest */
 			min_ms = ms;
-		}
-		else if (prev_min_ms == NULL) {
+		} else if ((prev_min_ms == NULL)
+			|| (prev_min_ms->len > ms->len))
 			prev_min_ms = ms;
-		}
 	}
 
 	if (min_ms == NULL || prev_min_ms == NULL) {
@@ -877,8 +876,8 @@ test_memzone_reserve_memory_with_smallest_offset(void)
 
 			/* set new smallest */
 			min_ms = ms;
-		}
-		else if (prev_min_ms == NULL) {
+		} else if ((prev_min_ms == NULL)
+			|| (prev_min_ms->len > ms->len)) {
 			prev_min_ms = ms;
 		}
 	}
-- 
1.7.1

[dpdk-dev] [PATCH v5 14/14] Fix the compiling of test-pmd on IBM Power Architecture

[Chao Zhu]

This patch fixes compiling problems on IBM Power architecture and turn
on the test-pmd compiling option in configuration file. Actually, this
is an big endian compiling fix.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 app/test-pmd/config.c |   39 +++++++++++++++++++++++++--------------
 1 files changed, 25 insertions(+), 14 deletions(-)

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 9bc08f4..4fee6c0 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -612,8 +612,13 @@ ring_dma_zone_lookup(const char *ring_name, uint8_t port_id, uint16_t q_id)
 union igb_ring_dword {
 	uint64_t dword;
 	struct {
+#ifdef RTE_ARCH_BIG_ENDIAN
+		uint32_t lo;
+		uint32_t hi;
+#else
 		uint32_t hi;
 		uint32_t lo;
+#endif
 	} words;
 };
 
@@ -656,23 +661,29 @@ ring_rx_descriptor_display(const struct rte_memzone *ring_mz,
 		/* 32 bytes RX descriptor, i40e only */
 		struct igb_ring_desc_32_bytes *ring =
 			(struct igb_ring_desc_32_bytes *)ring_mz->addr;
+		ring[desc_id].lo_dword.dword =
+			rte_le_to_cpu_64(ring[desc_id].lo_dword.dword);
+		ring_rxd_display_dword(ring[desc_id].lo_dword);
+		ring[desc_id].hi_dword.dword =
+			rte_le_to_cpu_64(ring[desc_id].hi_dword.dword);
+		ring_rxd_display_dword(ring[desc_id].hi_dword);
+		ring[desc_id].resv1.dword =
+			rte_le_to_cpu_64(ring[desc_id].resv1.dword);
+		ring_rxd_display_dword(ring[desc_id].resv1);
+		ring[desc_id].resv2.dword =
+			rte_le_to_cpu_64(ring[desc_id].resv2.dword);
+		ring_rxd_display_dword(ring[desc_id].resv2);
 
-		ring_rxd_display_dword(rte_le_to_cpu_64(
-				ring[desc_id].lo_dword));
-		ring_rxd_display_dword(rte_le_to_cpu_64(
-				ring[desc_id].hi_dword));
-		ring_rxd_display_dword(rte_le_to_cpu_64(
-				ring[desc_id].resv1));
-		ring_rxd_display_dword(rte_le_to_cpu_64(
-				ring[desc_id].resv2));
 		return;
 	}
 #endif
 	/* 16 bytes RX descriptor */
-	ring_rxd_display_dword(rte_le_to_cpu_64(
-			ring[desc_id].lo_dword));
-	ring_rxd_display_dword(rte_le_to_cpu_64(
-			ring[desc_id].hi_dword));
+	ring[desc_id].lo_dword.dword =
+		rte_le_to_cpu_64(ring[desc_id].lo_dword.dword);
+	ring_rxd_display_dword(ring[desc_id].lo_dword);
+	ring[desc_id].hi_dword.dword =
+		rte_le_to_cpu_64(ring[desc_id].hi_dword.dword);
+	ring_rxd_display_dword(ring[desc_id].hi_dword);
 }
 
 static void
@@ -682,8 +693,8 @@ ring_tx_descriptor_display(const struct rte_memzone *ring_mz, uint16_t desc_id)
 	struct igb_ring_desc_16_bytes txd;
 
 	ring = (struct igb_ring_desc_16_bytes *)ring_mz->addr;
-	txd.lo_dword = rte_le_to_cpu_64(ring[desc_id].lo_dword);
-	txd.hi_dword = rte_le_to_cpu_64(ring[desc_id].hi_dword);
+	txd.lo_dword.dword = rte_le_to_cpu_64(ring[desc_id].lo_dword.dword);
+	txd.hi_dword.dword = rte_le_to_cpu_64(ring[desc_id].hi_dword.dword);
 	printf("    0x%08X - 0x%08X / 0x%08X - 0x%08X\n",
 			(unsigned)txd.lo_dword.words.lo,
 			(unsigned)txd.lo_dword.words.hi,
-- 
1.7.1

Re: [dpdk-dev] [PATCH v5 00/14] Patches for DPDK to support Power architecture

[David Marchand]

On Tue, Nov 25, 2014 at 11:17 PM, Chao Zhu <chaozhu@linux.vnet.ibm.com>
wrote:

> The set of patches add IBM Power architecture to the DPDK. It adds the
> required support to the EAL library. This set of patches doesn't support
> full DPDK function on Power processors. To compile on PPC64 architecture,
> GCC version >= 4.8 must be used. According to Bruce and Neil's comments,
> this v5 patch removed the common configuration files of Powerpc in v4.
> Also, it fixed the checkpatch issues in v3.
>
> The only unsolved checkpatch issue is :
> ERROR: space prohibited before open square bracket '['
>
> This issue refers to the asm code input/output naming. But I think the
> error is invalid.
>
>
I must admit that the architecture abstraction in dpdk is not fully done,
but it is more a "core" problem than a problem of this port itself.
I am pretty sure that there is still a lot of places in dpdk that rely on
the fact that they were written for x86 architecture.

Neil's concerns on cpuflags (
http://dpdk.org/ml/archives/dev/2014-November/008769.html) are valid but I
think we could go with an incremental approach.
Since Chao is commited to add power support to dpdk, we can have this fixed
in subsequent patches with this patchset in 1.8.


So, this patchset looks good enough to me.
Acked-by: David Marchand <david.marchand@6wind.com>


-- 
David Marchand

Re: [dpdk-dev] [PATCH v5 00/14] Patches for DPDK to support Power architecture

[Thomas Monjalon]

2014-11-26 10:32, David Marchand:
> On Tue, Nov 25, 2014 at 11:17 PM, Chao Zhu <chaozhu@linux.vnet.ibm.com>
> wrote:
> 
> > The set of patches add IBM Power architecture to the DPDK. It adds the
> > required support to the EAL library. This set of patches doesn't support
> > full DPDK function on Power processors. To compile on PPC64 architecture,
> > GCC version >= 4.8 must be used. According to Bruce and Neil's comments,
> > this v5 patch removed the common configuration files of Powerpc in v4.
> > Also, it fixed the checkpatch issues in v3.
> >
> > The only unsolved checkpatch issue is :
> > ERROR: space prohibited before open square bracket '['
> >
> > This issue refers to the asm code input/output naming. But I think the
> > error is invalid.
> >
> >
> I must admit that the architecture abstraction in dpdk is not fully done,
> but it is more a "core" problem than a problem of this port itself.
> I am pretty sure that there is still a lot of places in dpdk that rely on
> the fact that they were written for x86 architecture.
> 
> Neil's concerns on cpuflags (
> http://dpdk.org/ml/archives/dev/2014-November/008769.html) are valid but I
> think we could go with an incremental approach.
> Since Chao is commited to add power support to dpdk, we can have this fixed
> in subsequent patches with this patchset in 1.8.
> 
> 
> So, this patchset looks good enough to me.
> Acked-by: David Marchand <david.marchand@6wind.com>

Applied.

Nice to see a new architecture.
We'll have to make things more generic and do more tests but this is a good
first step.

Thanks
-- 
Thomas