1 #ifndef _ASM_POWERPC_CACHE_H 2 #define _ASM_POWERPC_CACHE_H 3 4 #ifdef __KERNEL__ 5 6 7 /* bytes per L1 cache line */ 8 #if defined(CONFIG_8xx) || defined(CONFIG_403GCX) 9 #define L1_CACHE_SHIFT 4 10 #define MAX_COPY_PREFETCH 1 11 #elif defined(CONFIG_PPC_E500MC) 12 #define L1_CACHE_SHIFT 6 13 #define MAX_COPY_PREFETCH 4 14 #elif defined(CONFIG_PPC32) 15 #define L1_CACHE_SHIFT 5 16 #define MAX_COPY_PREFETCH 4 17 #else /* CONFIG_PPC64 */ 18 #define L1_CACHE_SHIFT 7 19 #endif 20 21 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) 22 23 #define SMP_CACHE_BYTES L1_CACHE_BYTES 24 25 #if defined(__powerpc64__) && !defined(__ASSEMBLY__) 26 struct ppc64_caches { 27 u32 dsize; /* L1 d-cache size */ 28 u32 dline_size; /* L1 d-cache line size */ 29 u32 log_dline_size; 30 u32 dlines_per_page; 31 u32 isize; /* L1 i-cache size */ 32 u32 iline_size; /* L1 i-cache line size */ 33 u32 log_iline_size; 34 u32 ilines_per_page; 35 }; 36 37 extern struct ppc64_caches ppc64_caches; 38 #endif /* __powerpc64__ && ! __ASSEMBLY__ */ 39 40 #if !defined(__ASSEMBLY__) 41 #define __read_mostly __attribute__((__section__(".data.read_mostly"))) 42 #endif 43 44 #endif /* __KERNEL__ */ 45 #endif /* _ASM_POWERPC_CACHE_H */ 46