arch/blackfin/include/asm/cache.h

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