26ff6c11ef
Cleanup of page table allocators, using generic folded PMD and PUD helpers. TLB flushing operations are moved to a more sensible spot. The page fault handler is also optimized slightly, we no longer waste cycles on IRQ disabling for flushing of the page from the ITLB, since we're already under CLI protection by the initial exception handler. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/*
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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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void flush_cache_all(void);
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void flush_cache_mm(struct mm_struct *mm);
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void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
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unsigned long end);
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void flush_cache_page(struct vm_area_struct *vma, unsigned long addr,
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unsigned long pfn);
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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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void flush_icache_range(unsigned long start, unsigned long end);
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void flush_cache_sigtramp(unsigned long addr);
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void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
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unsigned long addr, 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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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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