[dpdk-dev] [PATCH] ppc64le: fix build without glibc and using Clang

[Piotr Kubaj <pkubaj@FreeBSD.org>]

__ppc_get_timebase() is only present when glibc is used.

Signed-off-by: Piotr Kubaj <pkubaj@FreeBSD.org>
---
 lib/eal/ppc/include/rte_altivec.h |  3 +++
 lib/eal/ppc/include/rte_cycles.h  | 12 ++++++++++++
 lib/eal/ppc/rte_cycles.c          | 16 ++++++++++++++++
 3 files changed, 31 insertions(+)

diff --git a/lib/eal/ppc/include/rte_altivec.h b/lib/eal/ppc/include/rte_altivec.h
index 1551a94544..3fcc819c11 100644
--- a/lib/eal/ppc/include/rte_altivec.h
+++ b/lib/eal/ppc/include/rte_altivec.h
@@ -7,6 +7,9 @@
 #define _RTE_ALTIVEC_H_
 
 /* To include altivec.h, GCC version must be >= 4.8 */
+#ifdef __clang__
+#define vector __vector
+#endif
 #include <altivec.h>
 
 /*
diff --git a/lib/eal/ppc/include/rte_cycles.h b/lib/eal/ppc/include/rte_cycles.h
index 5585f9273c..a8307ceaff 100644
--- a/lib/eal/ppc/include/rte_cycles.h
+++ b/lib/eal/ppc/include/rte_cycles.h
@@ -10,7 +10,13 @@
 extern "C" {
 #endif
 
+#ifdef linux
+#include <features.h>
+#endif
+
+#ifdef __GLIBC__
 #include <sys/platform/ppc.h>
+#endif
 
 #include "generic/rte_cycles.h"
 
@@ -26,7 +32,13 @@ extern "C" {
 static inline uint64_t
 rte_rdtsc(void)
 {
+#ifdef __GLIBC__
 	return __ppc_get_timebase();
+#else
+	uint64_t __tb;
+	__asm__ volatile ("mfspr %0, 268" : "=r" (__tb));
+	return __tb;
+#endif
 }
 
 static inline uint64_t
diff --git a/lib/eal/ppc/rte_cycles.c b/lib/eal/ppc/rte_cycles.c
index 3180adb0ff..48545c4d67 100644
--- a/lib/eal/ppc/rte_cycles.c
+++ b/lib/eal/ppc/rte_cycles.c
@@ -2,12 +2,28 @@
  * Copyright (C) IBM Corporation 2019.
  */
 
+#ifdef linux
+#include <features.h>
+#elif defined(__FreeBSD__)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+
+#ifdef __GLIBC__
 #include <sys/platform/ppc.h>
+#endif
 
 #include "eal_private.h"
 
 uint64_t
 get_tsc_freq_arch(void)
 {
+#ifdef __GLIBC__
 	return __ppc_get_timebase_freq();
+#elif defined(__FreeBSD__)
+	uint64_t freq;
+	size_t length = sizeof(freq);
+	sysctlbyname("kern.timecounter.tc.timebase.frequency", &freq, &length, NULL, 0);
+	return freq;
+#endif
 }
-- 
2.31.1