Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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 MAX_COPY_PREFETCH 4
16#if defined(CONFIG_PPC_47x)
17#define L1_CACHE_SHIFT 7
18#else
19#define L1_CACHE_SHIFT 5
20#endif
21#else /* CONFIG_PPC64 */
22#define L1_CACHE_SHIFT 7
23#endif
24
25#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
26
27#define SMP_CACHE_BYTES L1_CACHE_BYTES
28
29#if defined(__powerpc64__) && !defined(__ASSEMBLY__)
30struct ppc64_caches {
31 u32 dsize; /* L1 d-cache size */
32 u32 dline_size; /* L1 d-cache line size */
33 u32 log_dline_size;
34 u32 dlines_per_page;
35 u32 isize; /* L1 i-cache size */
36 u32 iline_size; /* L1 i-cache line size */
37 u32 log_iline_size;
38 u32 ilines_per_page;
39};
40
41extern struct ppc64_caches ppc64_caches;
42#endif /* __powerpc64__ && ! __ASSEMBLY__ */
43
44#if !defined(__ASSEMBLY__)
45#define __read_mostly __attribute__((__section__(".data..read_mostly")))
46#endif
47
48#endif /* __KERNEL__ */
49#endif /* _ASM_POWERPC_CACHE_H */