/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/unicore32/include/asm/cache.h * * Code specific to PKUnity SoC and UniCore ISA * * Copyright (C) 2001-2010 GUAN Xue-tao */ #ifndef __UNICORE_CACHE_H__ #define __UNICORE_CACHE_H__ #define L1_CACHE_SHIFT (5) #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 #endif