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65 lines
2.0 KiB
65 lines
2.0 KiB
20 years ago
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/*
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* include/asm-sh/cpu-sh4/cacheflush.h
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*
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* Copyright (C) 1999 Niibe Yutaka
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* Copyright (C) 2003 Paul Mundt
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef __ASM_CPU_SH4_CACHEFLUSH_H
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#define __ASM_CPU_SH4_CACHEFLUSH_H
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/*
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* Caches are broken on SH-4 (unless we use write-through
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* caching; in which case they're only semi-broken),
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* so we need them.
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*/
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/* Page is 4K, OC size is 16K, there are four lines. */
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#define CACHE_ALIAS 0x00003000
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struct page;
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struct mm_struct;
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struct vm_area_struct;
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extern void flush_cache_all(void);
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extern void flush_cache_mm(struct mm_struct *mm);
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extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
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unsigned long end);
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extern void flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn);
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extern void flush_dcache_page(struct page *pg);
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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 start, unsigned long end);
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extern void flush_cache_sigtramp(unsigned long addr);
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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,
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int len);
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#define flush_icache_page(vma,pg) do { } while (0)
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/* Initialization of P3 area for copy_user_page */
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extern void p3_cache_init(void);
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#define PG_mapped PG_arch_1
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/* We provide our own get_unmapped_area to avoid cache alias issue */
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#define HAVE_ARCH_UNMAPPED_AREA
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#ifdef CONFIG_MMU
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extern int remap_area_pages(unsigned long addr, unsigned long phys_addr,
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unsigned long size, unsigned long flags);
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#else /* CONFIG_MMU */
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static inline int remap_area_pages(unsigned long addr, unsigned long phys_addr,
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unsigned long size, unsigned long flags)
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{
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return 0;
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}
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#endif /* CONFIG_MMU */
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#endif /* __ASM_CPU_SH4_CACHEFLUSH_H */
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