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Since mandatory barriers may be used (explicitly or implicitly via readl etc.) to ensure the ordering between Device and Normal memory accesses, a DMB is not enough. This patch converts it to a DSB. Cc: Colin Cross <ccross@android.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
31 lines
1,005 B
C
31 lines
1,005 B
C
/*
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* arch/arm/mach-realview/include/mach/barriers.h
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*
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* Copyright (C) 2010 ARM Ltd.
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* Written by Catalin Marinas <catalin.marinas@arm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __MACH_BARRIERS_H
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#define __MACH_BARRIERS_H
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#include <asm/outercache.h>
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#define rmb() dsb()
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#define wmb() do { dsb(); outer_sync(); } while (0)
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#define mb() wmb()
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#endif /* __MACH_BARRIERS_H */
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