mirror of
https://github.com/torvalds/linux.git
synced 2024-11-12 15:11:50 +00:00
1da177e4c3
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!
50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/*
|
|
* include/asm-ppc/cacheflush.h
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
#ifdef __KERNEL__
|
|
#ifndef _PPC_CACHEFLUSH_H
|
|
#define _PPC_CACHEFLUSH_H
|
|
|
|
#include <linux/mm.h>
|
|
|
|
/*
|
|
* No cache flushing is required when address mappings are
|
|
* changed, because the caches on PowerPCs are physically
|
|
* addressed. -- paulus
|
|
* Also, when SMP we use the coherency (M) bit of the
|
|
* BATs and PTEs. -- Cort
|
|
*/
|
|
#define flush_cache_all() do { } while (0)
|
|
#define flush_cache_mm(mm) do { } while (0)
|
|
#define flush_cache_range(vma, a, b) do { } while (0)
|
|
#define flush_cache_page(vma, p, 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);
|
|
|
|
#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);
|
|
extern void __flush_dcache_icache_phys(unsigned long physaddr);
|
|
extern void flush_dcache_icache_page(struct page *page);
|
|
#endif /* _PPC_CACHEFLUSH_H */
|
|
#endif /* __KERNEL__ */
|