/* * 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. */ #ifndef _ASM_POWERPC_CACHEFLUSH_H #define _ASM_POWERPC_CACHEFLUSH_H #ifdef __KERNEL__ #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); 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); } extern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, unsigned long addr, int len); extern void __flush_dcache_icache(void *page_va); extern void flush_dcache_icache_page(struct page *page); #if defined(CONFIG_PPC32) && !defined(CONFIG_BOOKE) extern void __flush_dcache_icache_phys(unsigned long physaddr); #endif /* CONFIG_PPC32 && !CONFIG_BOOKE */ extern void flush_dcache_range(unsigned long start, unsigned long stop); #ifdef CONFIG_PPC32 extern void clean_dcache_range(unsigned long start, unsigned long stop); extern void invalidate_dcache_range(unsigned long start, unsigned long stop); #endif /* CONFIG_PPC32 */ #ifdef CONFIG_PPC64 extern void flush_inval_dcache_range(unsigned long start, unsigned long stop); extern void flush_dcache_phys_range(unsigned long start, unsigned long stop); #endif #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) #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_CACHEFLUSH_H */