1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/*
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* include/asm-ppc/cacheflush.h
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifdef __KERNEL__
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#ifndef _PPC_CACHEFLUSH_H
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#define _PPC_CACHEFLUSH_H
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#include <linux/mm.h>
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/*
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* No cache flushing is required when address mappings are
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* changed, because the caches on PowerPCs are physically
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* addressed. -- paulus
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* Also, when SMP we use the coherency (M) bit of the
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* BATs and PTEs. -- Cort
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*/
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#define flush_cache_all() do { } while (0)
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#define flush_cache_mm(mm) do { } while (0)
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#define flush_cache_range(vma, a, b) do { } while (0)
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#define flush_cache_page(vma, p, pfn) do { } while (0)
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#define flush_icache_page(vma, page) do { } while (0)
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#define flush_cache_vmap(start, end) do { } while (0)
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#define flush_cache_vunmap(start, end) do { } while (0)
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extern void flush_dcache_page(struct page *page);
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#define flush_dcache_mmap_lock(mapping) do { } while (0)
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#define flush_dcache_mmap_unlock(mapping) do { } while (0)
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extern void flush_icache_range(unsigned long, unsigned long);
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extern void flush_icache_user_range(struct vm_area_struct *vma,
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struct page *page, unsigned long addr, int len);
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#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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do { memcpy(dst, src, len); \
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flush_icache_user_range(vma, page, vaddr, len); \
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} while (0)
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#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
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memcpy(dst, src, len)
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extern void __flush_dcache_icache(void *page_va);
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extern void __flush_dcache_icache_phys(unsigned long physaddr);
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extern void flush_dcache_icache_page(struct page *page);
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#endif /* _PPC_CACHEFLUSH_H */
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#endif /* __KERNEL__ */
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