1 /* 2 * This program is free software; you can redistribute it and/or 3 * modify it under the terms of the GNU General Public License 4 * as published by the Free Software Foundation; either version 5 * 2 of the License, or (at your option) any later version. 6 */ 7 #ifndef _ASM_POWERPC_CACHEFLUSH_H 8 #define _ASM_POWERPC_CACHEFLUSH_H 9 10 #ifdef __KERNEL__ 11 12 #include <linux/mm.h> 13 #include <asm/cputable.h> 14 15 /* 16 * No cache flushing is required when address mappings are changed, 17 * because the caches on PowerPCs are physically addressed. 18 */ 19 #define flush_cache_all() do { } while (0) 20 #define flush_cache_mm(mm) do { } while (0) 21 #define flush_cache_dup_mm(mm) do { } while (0) 22 #define flush_cache_range(vma, start, end) do { } while (0) 23 #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) 24 #define flush_icache_page(vma, page) do { } while (0) 25 #define flush_cache_vmap(start, end) do { } while (0) 26 #define flush_cache_vunmap(start, end) do { } while (0) 27 28 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 29 extern void flush_dcache_page(struct page *page); 30 #define flush_dcache_mmap_lock(mapping) do { } while (0) 31 #define flush_dcache_mmap_unlock(mapping) do { } while (0) 32 33 extern void __flush_disable_L1(void); 34 35 extern void flush_icache_range(unsigned long, unsigned long); 36 extern void flush_icache_user_range(struct vm_area_struct *vma, 37 struct page *page, unsigned long addr, 38 int len); 39 extern void __flush_dcache_icache(void *page_va); 40 extern void flush_dcache_icache_page(struct page *page); 41 #if defined(CONFIG_PPC32) && !defined(CONFIG_BOOKE) 42 extern void __flush_dcache_icache_phys(unsigned long physaddr); 43 #endif /* CONFIG_PPC32 && !CONFIG_BOOKE */ 44 45 extern void flush_dcache_range(unsigned long start, unsigned long stop); 46 #ifdef CONFIG_PPC32 47 extern void clean_dcache_range(unsigned long start, unsigned long stop); 48 extern void invalidate_dcache_range(unsigned long start, unsigned long stop); 49 #endif /* CONFIG_PPC32 */ 50 #ifdef CONFIG_PPC64 51 extern void flush_inval_dcache_range(unsigned long start, unsigned long stop); 52 extern void flush_dcache_phys_range(unsigned long start, unsigned long stop); 53 #endif 54 55 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 56 do { \ 57 memcpy(dst, src, len); \ 58 flush_icache_user_range(vma, page, vaddr, len); \ 59 } while (0) 60 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 61 memcpy(dst, src, len) 62 63 #endif /* __KERNEL__ */ 64 65 #endif /* _ASM_POWERPC_CACHEFLUSH_H */ 66