diff options
author | Anton Staaf <robotboy@chromium.org> | 2011-10-17 16:46:12 -0700 |
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committer | Wolfgang Denk <wd@denx.de> | 2011-10-23 20:50:43 +0200 |
commit | 3620f860eff02722aa559e568f4ca87f4c304901 (patch) | |
tree | 73f64c43db96c43c1858d269a8b49971dc048613 /arch/x86/include/asm/cache.h | |
parent | 72d4dd4159c4f3978c20c04f78fe6aa02450da1a (diff) |
x86: cache: define ARCH_DMA_MINALIGN for DMA buffer alignment
Signed-off-by: Anton Staaf <robotboy@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Graeme Russ <graeme.russ@gmail.com>
Diffstat (limited to 'arch/x86/include/asm/cache.h')
-rw-r--r-- | arch/x86/include/asm/cache.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cache.h b/arch/x86/include/asm/cache.h new file mode 100644 index 0000000000..87c9e0be42 --- /dev/null +++ b/arch/x86/include/asm/cache.h @@ -0,0 +1,35 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * 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 __X86_CACHE_H__ +#define __X86_CACHE_H__ + +/* + * If CONFIG_SYS_CACHELINE_SIZE is defined use it for DMA alignment. Otherwise + * use 64-bytes, a safe default for x86. + */ +#ifdef CONFIG_SYS_CACHELINE_SIZE +#define ARCH_DMA_MINALIGN CONFIG_SYS_CACHELINE_SIZE +#else +#define ARCH_DMA_MINALIGN 64 +#endif + +#endif /* __X86_CACHE_H__ */ |