kernel-ark/include/asm-ppc64/cacheflush.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

49 lines
1.7 KiB
C

#ifndef _PPC64_CACHEFLUSH_H
#define _PPC64_CACHEFLUSH_H
#include <linux/mm.h>
#include <asm/cputable.h>
/*
* No cache flushing is required when address mappings are
* changed, because the caches on PowerPCs are physically
* addressed.
*/
#define flush_cache_all() do { } while (0)
#define flush_cache_mm(mm) do { } while (0)
#define flush_cache_range(vma, start, end) do { } while (0)
#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
#define flush_icache_page(vma, page) do { } while (0)
#define flush_cache_vmap(start, end) do { } while (0)
#define flush_cache_vunmap(start, end) do { } while (0)
extern void flush_dcache_page(struct page *page);
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
extern void __flush_icache_range(unsigned long, unsigned long);
extern void flush_icache_user_range(struct vm_area_struct *vma,
struct page *page, unsigned long addr,
int len);
extern void flush_dcache_range(unsigned long start, unsigned long stop);
extern void flush_dcache_phys_range(unsigned long start, unsigned long stop);
extern void flush_inval_dcache_range(unsigned long start, unsigned long stop);
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
do { memcpy(dst, src, len); \
flush_icache_user_range(vma, page, vaddr, len); \
} while (0)
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
extern void __flush_dcache_icache(void *page_va);
static inline void flush_icache_range(unsigned long start, unsigned long stop)
{
if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
__flush_icache_range(start, stop);
}
#endif /* _PPC64_CACHEFLUSH_H */