release/src-rt-6.x.4708/linux/linux-2.6.36/arch/blackfin/include/asm/cache.h

   1 /*
   2  * Copyright 2004-2009 Analog Devices Inc.
   3  *
   4  * Licensed under the GPL-2 or later.
   5  */
   6
   7 #ifndef __ARCH_BLACKFIN_CACHE_H
   8 #define __ARCH_BLACKFIN_CACHE_H
   9
  10 /*
  11  * Bytes per L1 cache line
  12  * Blackfin loads 32 bytes for cache
  13  */
  14 #define L1_CACHE_SHIFT  5
  15 #define L1_CACHE_BYTES  (1 << L1_CACHE_SHIFT)
  16 #define SMP_CACHE_BYTES L1_CACHE_BYTES
  17
  18 #define ARCH_DMA_MINALIGN       L1_CACHE_BYTES
  19
  20 #ifdef CONFIG_SMP
  21 #define __cacheline_aligned
  22 #else
  23 #define ____cacheline_aligned
  24
  25 /*
  26  * Put cacheline_aliged data to L1 data memory
  27  */
  28 #ifdef CONFIG_CACHELINE_ALIGNED_L1
  29 #define __cacheline_aligned                             \
  30           __attribute__((__aligned__(L1_CACHE_BYTES),   \
  31                 __section__(".data_l1.cacheline_aligned")))
  32 #endif
  33
  34 #endif
  35
  36 /*
  37  * largest L1 which this arch supports
  38  */
  39 #define L1_CACHE_SHIFT_MAX      5
  40
  41 #if defined(CONFIG_SMP) && !defined(CONFIG_BFIN_CACHE_COHERENT)
  42 # if defined(CONFIG_BFIN_EXTMEM_ICACHEABLE) || defined(CONFIG_BFIN_L2_ICACHEABLE)
  43 # define __ARCH_SYNC_CORE_ICACHE
  44 # endif
  45 # if defined(CONFIG_BFIN_EXTMEM_DCACHEABLE) || defined(CONFIG_BFIN_L2_DCACHEABLE)
  46 # define __ARCH_SYNC_CORE_DCACHE
  47 # endif
  48 #ifndef __ASSEMBLY__
  49 asmlinkage void __raw_smp_mark_barrier_asm(void);
  50 asmlinkage void __raw_smp_check_barrier_asm(void);
  51
  52 static inline void smp_mark_barrier(void)
  53 {
  54         __raw_smp_mark_barrier_asm();
  55 }
  56 static inline void smp_check_barrier(void)
  57 {
  58         __raw_smp_check_barrier_asm();
  59 }
  60
  61 void resync_core_dcache(void);
  62 void resync_core_icache(void);
  63 #endif
  64 #endif
  65
  66
  67 #endif