From 8407faa1b33d55dc850e1628bb34302f0d2b1828 Mon Sep 17 00:00:00 2001
From: Li-Wen Hsu <lwhsu@FreeBSD.org>
Date: Sun, 22 Jul 2018 22:35:17 +0000
Subject: [PATCH] Add udma_barrier definitions for RISC-V

Reviewed by:	kib
Sponsored by:	The FreeBSD Foundation
---
 contrib/ofed/include/udma_barrier.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/contrib/ofed/include/udma_barrier.h b/contrib/ofed/include/udma_barrier.h
index 71d264f8dce..5bd6b7f7af3 100644
--- a/contrib/ofed/include/udma_barrier.h
+++ b/contrib/ofed/include/udma_barrier.h
@@ -104,6 +104,10 @@
 #include <sys/types.h>
 #include <machine/atomic.h>
 #define udma_to_device_barrier() dmb()
+#elif defined(__riscv)
+#include <sys/types.h>
+#include <machine/atomic.h>
+#define udma_to_device_barrier() fence()
 #else
 #error No architecture specific memory barrier defines found!
 #endif
@@ -140,6 +144,8 @@
 #define udma_from_device_barrier() mips_sync()
 #elif defined(__arm__)
 #define udma_from_device_barrier() dmb()
+#elif defined(__riscv)
+#define udma_from_device_barrier() fence()
 #else
 #error No architecture specific memory barrier defines found!
 #endif
@@ -208,6 +214,8 @@
 #define mmio_flush_writes() mips_sync()
 #elif defined(__arm__)
 #define mmio_flush_writes() dmb()
+#elif defined(__riscv)
+#define mmio_flush_writes() fence()
 #else
 #error No architecture specific memory barrier defines found!
 #endif