Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#ifndef _PPC64_CACHEFLUSH_H
2#define _PPC64_CACHEFLUSH_H
3
4#include <linux/mm.h>
5#include <asm/cputable.h>
6
7/*
8 * No cache flushing is required when address mappings are
9 * changed, because the caches on PowerPCs are physically
10 * addressed.
11 */
12#define flush_cache_all() do { } while (0)
13#define flush_cache_mm(mm) do { } while (0)
14#define flush_cache_range(vma, start, end) do { } while (0)
15#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
16#define flush_icache_page(vma, page) do { } while (0)
17#define flush_cache_vmap(start, end) do { } while (0)
18#define flush_cache_vunmap(start, end) do { } while (0)
19
20extern void flush_dcache_page(struct page *page);
21#define flush_dcache_mmap_lock(mapping) do { } while (0)
22#define flush_dcache_mmap_unlock(mapping) do { } while (0)
23
24extern void __flush_icache_range(unsigned long, unsigned long);
25extern void flush_icache_user_range(struct vm_area_struct *vma,
26 struct page *page, unsigned long addr,
27 int len);
28
29extern void flush_dcache_range(unsigned long start, unsigned long stop);
30extern void flush_dcache_phys_range(unsigned long start, unsigned long stop);
31extern void flush_inval_dcache_range(unsigned long start, unsigned long stop);
32
33#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
34do { memcpy(dst, src, len); \
35 flush_icache_user_range(vma, page, vaddr, len); \
36} while (0)
37#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
38 memcpy(dst, src, len)
39
40extern void __flush_dcache_icache(void *page_va);
41
42static inline void flush_icache_range(unsigned long start, unsigned long stop)
43{
44 if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
45 __flush_icache_range(start, stop);
46}
47
48#endif /* _PPC64_CACHEFLUSH_H */