diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-ppc/cacheflush.h |
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!
Diffstat (limited to 'include/asm-ppc/cacheflush.h')
-rw-r--r-- | include/asm-ppc/cacheflush.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/include/asm-ppc/cacheflush.h b/include/asm-ppc/cacheflush.h new file mode 100644 index 000000000000..6a243efb3317 --- /dev/null +++ b/include/asm-ppc/cacheflush.h @@ -0,0 +1,49 @@ +/* + * 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__ */ |