1 #ifndef _ASM_POWERPC_CACHE_H
2 #define _ASM_POWERPC_CACHE_H
7 /* bytes per L1 cache line */
8 #if defined(CONFIG_PPC_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 MAX_COPY_PREFETCH 4
16 #if defined(CONFIG_PPC_47x)
17 #define L1_CACHE_SHIFT 7
19 #define L1_CACHE_SHIFT 5
21 #else /* CONFIG_PPC64 */
22 #define L1_CACHE_SHIFT 7
23 #define IFETCH_ALIGN_SHIFT 4 /* POWER8,9 */
26 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
28 #define SMP_CACHE_BYTES L1_CACHE_BYTES
30 #define IFETCH_ALIGN_BYTES (1 << IFETCH_ALIGN_SHIFT)
32 #if defined(__powerpc64__) && !defined(__ASSEMBLY__)
34 struct ppc_cache_info
{
37 u32 block_size
; /* L1 only */
45 struct ppc_cache_info l1d
;
46 struct ppc_cache_info l1i
;
47 struct ppc_cache_info l2
;
48 struct ppc_cache_info l3
;
51 extern struct ppc64_caches ppc64_caches
;
52 #endif /* __powerpc64__ && ! __ASSEMBLY__ */
54 #if defined(__ASSEMBLY__)
56 * For a snooping icache, we still need a dummy icbi to purge all the
57 * prefetched instructions from the ifetch buffers. We also need a sync
58 * before the icbi to order the the actual stores to memory that might
59 * have modified instructions with the icbi.
61 #define PURGE_PREFETCHED_INS \
68 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
71 extern long _get_L2CR(void);
72 extern long _get_L3CR(void);
73 extern void _set_L2CR(unsigned long);
74 extern void _set_L3CR(unsigned long);
76 #define _get_L2CR() 0L
77 #define _get_L3CR() 0L
78 #define _set_L2CR(val) do { } while(0)
79 #define _set_L3CR(val) do { } while(0)
82 static inline void dcbz(void *addr
)
84 __asm__
__volatile__ ("dcbz 0, %0" : : "r"(addr
) : "memory");
87 static inline void dcbi(void *addr
)
89 __asm__
__volatile__ ("dcbi 0, %0" : : "r"(addr
) : "memory");
92 static inline void dcbf(void *addr
)
94 __asm__
__volatile__ ("dcbf 0, %0" : : "r"(addr
) : "memory");
97 static inline void dcbst(void *addr
)
99 __asm__
__volatile__ ("dcbst 0, %0" : : "r"(addr
) : "memory");
101 #endif /* !__ASSEMBLY__ */
102 #endif /* __KERNEL__ */
103 #endif /* _ASM_POWERPC_CACHE_H */