mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
b50f1704e9
This patch includes generic codes for memory management. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
27 lines
805 B
C
27 lines
805 B
C
/*
|
|
* linux/arch/unicore32/include/asm/cache.h
|
|
*
|
|
* Code specific to PKUnity SoC and UniCore ISA
|
|
*
|
|
* Copyright (C) 2001-2010 GUAN Xue-tao
|
|
*
|
|
* 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.
|
|
*/
|
|
#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
|