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ARM: Add omap-specific barrier implementation

Message ID 1267866784-10465-1-git-send-email-santosh.shilimkar@ti.com (mailing list archive)
State Awaiting Upstream, archived
Delegated to: Tony Lindgren
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Commit Message

Santosh Shilimkar March 6, 2010, 9:13 a.m. UTC 
None
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Patch

diff --git a/arch/arm/mach-omap2/include/mach/barriers.h b/arch/arm/mach-omap2/include/mach/barriers.h
new file mode 100644
index 0000000..e29aebf
--- /dev/null
+++ b/arch/arm/mach-omap2/include/mach/barriers.h
@@ -0,0 +1,32 @@ 
+/*
+ * omap barriers.h
+ *
+ * Copyright (C) 2010 Texas Instruments Ltd.
+ * Copyright (C) 2010 ARM Ltd.
+ * Written by Santosh Shilimkar <santosh.shilimkar@ti.com>
+ * based on realview version of Catalin Marinas <catalin.marinas@arm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __MACH_BARRIERS_H
+#define __MACH_BARRIERS_H
+
+#include <asm/outercache.h>
+
+#define rmb()		dmb()
+#define wmb()		do { dsb(); outer_sync(); } while (0)
+#define mb()		wmb()
+
+#endif	/* __MACH_BARRIERS_H */
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index 6da796e..4812da4 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -38,6 +38,7 @@  config ARCH_OMAP4
 	depends on ARCH_OMAP2PLUS
 	select CPU_V7
 	select ARM_GIC
+	select ARCH_HAS_BARRIERS if CACHE_L2X0
 
 endchoice