| 1 | |
| 2 | * include/asm-ppc/cacheflush.h
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| 3 | *
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| 4 | * This program is free software; you can redistribute it and/or
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| 5 | * modify it under the terms of the GNU General Public License
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| 6 | * as published by the Free Software Foundation; either version
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| 7 | * 2 of the License, or (at your option) any later version.
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| 8 |
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| 9 | #ifdef __KERNEL__
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| 10 | #ifndef _PPC_CACHEFLUSH_H
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| 11 | #define _PPC_CACHEFLUSH_H
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| 12 |
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| 13 | #include <linux/mm.h>
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| 14 |
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| 15 | |
| 16 | * No cache flushing is required when address mappings are
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| 17 | * changed, because the caches on PowerPCs are physically
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| 18 | * addressed. -- paulus
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| 19 | * Also, when SMP we use the coherency (M) bit of the
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| 20 | * BATs and PTEs. -- Cort
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| 21 |
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| 22 | #define flush_cache_all() do { } while (0)
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| 23 | #define flush_cache_mm(mm) do { } while (0)
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| 24 | #define flush_cache_range(vma, a, b) do { } while (0)
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| 25 | #define flush_cache_page(vma, p, pfn) do { } while (0)
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| 26 | #define flush_icache_page(vma, page) do { } while (0)
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| 27 | #define flush_cache_vmap(start, end) do { } while (0)
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| 28 | #define flush_cache_vunmap(start, end) do { } while (0)
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| 29 |
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| 30 | extern void flush_dcache_page(struct page *page);
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| 31 | #define flush_dcache_mmap_lock(mapping) do { } while (0)
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| 32 | #define flush_dcache_mmap_unlock(mapping) do { } while (0)
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| 33 |
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| 34 | extern void flush_icache_range(unsigned long, unsigned long);
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| 35 | extern void flush_icache_user_range(struct vm_area_struct *vma,
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| 36 | struct page *page, unsigned long addr, int len);
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| 37 |
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| 38 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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| 39 | do { memcpy(dst, src, len); \
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| 40 | flush_icache_user_range(vma, page, vaddr, len); \
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| 41 | } while (0)
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| 42 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
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| 43 | memcpy(dst, src, len)
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| 44 |
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| 45 | extern void __flush_dcache_icache(void *page_va);
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| 46 | extern void __flush_dcache_icache_phys(unsigned long physaddr);
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| 47 | extern void flush_dcache_icache_page(struct page *page);
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| 48 | #endif
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| 49 | #endif
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