| 1 | |
| 2 | * This program is free software; you can redistribute it and/or
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| 3 | * modify it under the terms of the GNU General Public License
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| 4 | * as published by the Free Software Foundation; either version
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| 5 | * 2 of the License, or (at your option) any later version.
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| 6 |
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| 7 | #ifndef _ASM_POWERPC_CACHEFLUSH_H
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| 8 | #define _ASM_POWERPC_CACHEFLUSH_H
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| 9 |
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| 10 | #ifdef __KERNEL__
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| 11 |
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| 12 | #include <linux/mm.h>
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| 13 | #include <asm/cputable.h>
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| 14 |
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| 15 | |
| 16 | * No cache flushing is required when address mappings are changed,
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| 17 | * because the caches on PowerPCs are physically addressed.
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| 18 |
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| 19 | #define flush_cache_all() do { } while (0)
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| 20 | #define flush_cache_mm(mm) do { } while (0)
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| 21 | #define flush_cache_dup_mm(mm) do { } while (0)
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| 22 | #define flush_cache_range(vma, start, end) do { } while (0)
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| 23 | #define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
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| 24 | #define flush_icache_page(vma, page) do { } while (0)
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| 25 | #define flush_cache_vmap(start, end) do { } while (0)
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| 26 | #define flush_cache_vunmap(start, end) do { } while (0)
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| 27 |
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| 28 | extern void flush_dcache_page(struct page *page);
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| 29 | #define flush_dcache_mmap_lock(mapping) do { } while (0)
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| 30 | #define flush_dcache_mmap_unlock(mapping) do { } while (0)
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| 31 |
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| 32 | extern void __flush_icache_range(unsigned long, unsigned long);
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| 33 | static inline void flush_icache_range(unsigned long start, unsigned long stop)
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| 34 | {
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| 35 | if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
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| 36 | __flush_icache_range(start, stop);
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| 37 | }
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| 38 |
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| 39 | extern void flush_icache_user_range(struct vm_area_struct *vma,
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| 40 | struct page *page, unsigned long addr,
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| 41 | int len);
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| 42 | extern void __flush_dcache_icache(void *page_va);
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| 43 | extern void flush_dcache_icache_page(struct page *page);
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| 44 | #if defined(CONFIG_PPC32) && !defined(CONFIG_BOOKE)
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| 45 | extern void __flush_dcache_icache_phys(unsigned long physaddr);
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| 46 | #endif
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| 47 |
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| 48 | extern void flush_dcache_range(unsigned long start, unsigned long stop);
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| 49 | #ifdef CONFIG_PPC32
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| 50 | extern void clean_dcache_range(unsigned long start, unsigned long stop);
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| 51 | extern void invalidate_dcache_range(unsigned long start, unsigned long stop);
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| 52 | #endif
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| 53 | #ifdef CONFIG_PPC64
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| 54 | extern void flush_inval_dcache_range(unsigned long start, unsigned long stop);
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| 55 | extern void flush_dcache_phys_range(unsigned long start, unsigned long stop);
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| 56 | #endif
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| 57 |
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| 58 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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| 59 | do { \
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| 60 | memcpy(dst, src, len); \
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| 61 | flush_icache_user_range(vma, page, vaddr, len); \
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| 62 | } while (0)
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| 63 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
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| 64 | memcpy(dst, src, len)
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| 65 |
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| 66 |
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| 67 | #endif
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| 68 |
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| 69 | #endif
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