@@ -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
new file mode 100644
@@ -0,0 +1,184 @@
+/*
+ * 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_ */
@@ -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