From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Date: Wed, 18 Jan 2017 01:21:15 +0000 (+0530)
Subject: eal/x86: define I/O device memory barriers
X-Git-Tag: spdx-start~4758
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=e8025211711a08257c4731a69bb5624d7de6d7c6;p=dpdk.git

eal/x86: define I/O device memory barriers

The patch does not provide any functional change for IA.
I/O barriers are mapped to existing smp barriers.

CC: Bruce Richardson <bruce.richardson@intel.com>
CC: Konstantin Ananyev <konstantin.ananyev@intel.com>
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---

diff --git a/lib/librte_eal/common/include/arch/x86/rte_atomic.h b/lib/librte_eal/common/include/arch/x86/rte_atomic.h
index 00b1cdf5d0..4eac66631c 100644
--- a/lib/librte_eal/common/include/arch/x86/rte_atomic.h
+++ b/lib/librte_eal/common/include/arch/x86/rte_atomic.h
@@ -61,6 +61,12 @@ extern "C" {
 
 #define rte_smp_rmb() rte_compiler_barrier()
 
+#define rte_io_mb() rte_mb()
+
+#define rte_io_wmb() rte_compiler_barrier()
+
+#define rte_io_rmb() rte_compiler_barrier()
+
 /*------------------------- 16 bit atomic operations -------------------------*/
 
 #ifndef RTE_FORCE_INTRINSICS