arch/hexagon/include/asm/cache.h

   1 /*
   2  * Cache definitions for the Hexagon architecture
   3  *
   4  * Copyright (c) 2010-2011,2014 The Linux Foundation. All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 and
   8  * only version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  18  * 02110-1301, USA.
  19  */
  20
  21 #ifndef __ASM_CACHE_H
  22 #define __ASM_CACHE_H
  23
  24 #include <linux/const.h>
  25
  26 /* Bytes per L1 cache line */
  27 #define L1_CACHE_SHIFT          5
  28 #define L1_CACHE_BYTES          (_AC(1,UL) << L1_CACHE_SHIFT)
  29
  30 #define ARCH_DMA_MINALIGN       L1_CACHE_BYTES
  31
  32 #define __cacheline_aligned     __aligned(L1_CACHE_BYTES)
  33 #define ____cacheline_aligned   __aligned(L1_CACHE_BYTES)
  34
  35 /* See http://lwn.net/Articles/262554/ */
  36 #define __read_mostly
  37
  38 #endif