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/* * Copyright (C) 2012 ARM Ltd. * * 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, see <http://www.gnu.org/licenses/>. */ #ifndef __ASM_CACHE_H #define __ASM_CACHE_H #define L1_CACHE_SHIFT 6 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) /* * Memory returned by kmalloc() may be used for DMA, so we must make * sure that all such allocations are cache aligned. Otherwise, * unrelated code may cause parts of the buffer to be read into the * cache before the transfer is done, causing old data to be seen by * the CPU. */ #define ARCH_DMA_MINALIGN L1_CACHE_BYTES #define ARCH_SLAB_MINALIGN 8 #endif