arch/avr32/include/asm/cache.h

   1 #ifndef __ASM_AVR32_CACHE_H
   2 #define __ASM_AVR32_CACHE_H
   3
   4 #define L1_CACHE_SHIFT 5
   5 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
   6
   7 /*
   8  * Memory returned by kmalloc() may be used for DMA, so we must make
   9  * sure that all such allocations are cache aligned. Otherwise,
  10  * unrelated code may cause parts of the buffer to be read into the
  11  * cache before the transfer is done, causing old data to be seen by
  12  * the CPU.
  13  */
  14 #define ARCH_DMA_MINALIGN       L1_CACHE_BYTES
  15
  16 #ifndef __ASSEMBLER__
  17 struct cache_info {
  18         unsigned int ways;
  19         unsigned int sets;
  20         unsigned int linesz;
  21 };
  22 #endif /* __ASSEMBLER */
  23
  24 /* Cache operation constants */
  25 #define ICACHE_FLUSH            0x00
  26 #define ICACHE_INVALIDATE       0x01
  27 #define ICACHE_LOCK             0x02
  28 #define ICACHE_UNLOCK           0x03
  29 #define ICACHE_PREFETCH         0x04
  30
  31 #define DCACHE_FLUSH            0x08
  32 #define DCACHE_LOCK             0x09
  33 #define DCACHE_UNLOCK           0x0a
  34 #define DCACHE_INVALIDATE       0x0b
  35 #define DCACHE_CLEAN            0x0c
  36 #define DCACHE_CLEAN_INVAL      0x0d
  37
  38 #endif /* __ASM_AVR32_CACHE_H */