33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
|
/*
|
||
|
|
* 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
|