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/* * 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__ */ |