| David Gibson | 26ef5c0 | 2005-11-10 11:50:16 +1100 | [diff] [blame] | 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) |
| Ralf Baechle | ec8c044 | 2006-12-12 17:14:57 +0000 | [diff] [blame] | 21 | #define flush_cache_dup_mm(mm) do { } while (0) |
| David Gibson | 26ef5c0 | 2005-11-10 11:50:16 +1100 | [diff] [blame] | 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 | extern void flush_dcache_page(struct page *page); |
| 29 | #define flush_dcache_mmap_lock(mapping) do { } while (0) |
| 30 | #define flush_dcache_mmap_unlock(mapping) do { } while (0) |
| 31 | |
| 32 | extern void __flush_icache_range(unsigned long, unsigned long); |
| 33 | static inline void flush_icache_range(unsigned long start, unsigned long stop) |
| 34 | { |
| 35 | if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE)) |
| 36 | __flush_icache_range(start, stop); |
| 37 | } |
| 38 | |
| 39 | extern void flush_icache_user_range(struct vm_area_struct *vma, |
| 40 | struct page *page, unsigned long addr, |
| 41 | int len); |
| 42 | extern void __flush_dcache_icache(void *page_va); |
| 43 | extern void flush_dcache_icache_page(struct page *page); |
| 44 | #if defined(CONFIG_PPC32) && !defined(CONFIG_BOOKE) |
| 45 | extern void __flush_dcache_icache_phys(unsigned long physaddr); |
| 46 | #endif /* CONFIG_PPC32 && !CONFIG_BOOKE */ |
| 47 | |
| 48 | extern void flush_dcache_range(unsigned long start, unsigned long stop); |
| 49 | #ifdef CONFIG_PPC32 |
| 50 | extern void clean_dcache_range(unsigned long start, unsigned long stop); |
| 51 | extern void invalidate_dcache_range(unsigned long start, unsigned long stop); |
| 52 | #endif /* CONFIG_PPC32 */ |
| 53 | #ifdef CONFIG_PPC64 |
| 54 | extern void flush_inval_dcache_range(unsigned long start, unsigned long stop); |
| 55 | extern void flush_dcache_phys_range(unsigned long start, unsigned long stop); |
| 56 | #endif |
| 57 | |
| 58 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ |
| 59 | do { \ |
| 60 | memcpy(dst, src, len); \ |
| 61 | flush_icache_user_range(vma, page, vaddr, len); \ |
| 62 | } while (0) |
| 63 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ |
| 64 | memcpy(dst, src, len) |
| 65 | |
| 66 | |
| Benjamin Herrenschmidt | 88df6e9 | 2007-04-12 15:30:22 +1000 | [diff] [blame] | 67 | |
| 68 | #ifdef CONFIG_DEBUG_PAGEALLOC |
| 69 | /* internal debugging function */ |
| 70 | void kernel_map_pages(struct page *page, int numpages, int enable); |
| 71 | #endif |
| 72 | |
| David Gibson | 26ef5c0 | 2005-11-10 11:50:16 +1100 | [diff] [blame] | 73 | #endif /* __KERNEL__ */ |
| 74 | |
| 75 | #endif /* _ASM_POWERPC_CACHEFLUSH_H */ |