svn commit: r256247 - head/sys/mips/mips

[Adrian Chadd]

Author: adrian
Date: Wed Oct  9 22:10:03 2013
New Revision: 256247
URL: http://svnweb.freebsd.org/changeset/base/256247

Log:
  Add read/write bus barriers for MIPS.
  
  Tested:
  
  * AR9344 - mips74k SoC
  
  Approved by:	re@ (delphij)

Modified:
  head/sys/mips/mips/bus_space_generic.c

Modified: head/sys/mips/mips/bus_space_generic.c
==============================================================================
--- head/sys/mips/mips/bus_space_generic.c	Wed Oct  9 22:00:03 2013	(r256246)
+++ head/sys/mips/mips/bus_space_generic.c	Wed Oct  9 22:10:03 2013	(r256247)
@@ -749,4 +749,8 @@ generic_bs_barrier(void *t __unused, 
 	if (flags & BUS_SPACE_BARRIER_WRITE)
 		mips_dcache_wbinv_all();
 #endif
+	if (flags & BUS_SPACE_BARRIER_READ)
+		rmb();
+	if (flags & BUS_SPACE_BARRIER_WRITE)
+		wmb();
 }