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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/nios2/include/asm/cacheflush.h
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/*

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 * Copyright (C) 2003 Microtronix Datacom Ltd.

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 * Copyright (C) 2000-2002 Greg Ungerer <[email protected]>

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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_NIOS2_CACHEFLUSH_H

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#define _ASM_NIOS2_CACHEFLUSH_H

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#include <linux/mm_types.h>

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/*

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 * This flag is used to indicate that the page pointed to by a pte is clean

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 * and does not require cleaning before returning it to the user.

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 */

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#define PG_dcache_clean PG_arch_1

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struct mm_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_dup_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 vmaddr,

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	unsigned long pfn);

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#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1

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void flush_dcache_page(struct page *page);

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void flush_dcache_folio(struct folio *folio);

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#define flush_dcache_folio flush_dcache_folio

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extern void flush_icache_range(unsigned long start, unsigned long end);

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void flush_icache_pages(struct vm_area_struct *vma, struct page *page,

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		unsigned int nr);

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#define flush_icache_pages flush_icache_pages

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#define flush_cache_vmap(start, end)		flush_dcache_range(start, end)

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#define flush_cache_vmap_early(start, end)	do { } while (0)

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#define flush_cache_vunmap(start, end)		flush_dcache_range(start, end)

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extern void copy_to_user_page(struct vm_area_struct *vma, struct page *page,

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				unsigned long user_vaddr,

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				void *dst, void *src, int len);

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extern void copy_from_user_page(struct vm_area_struct *vma, struct page *page,

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				unsigned long user_vaddr,

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				void *dst, void *src, int len);

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extern void flush_dcache_range(unsigned long start, unsigned long end);

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extern void invalidate_dcache_range(unsigned long start, unsigned long end);

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#define flush_dcache_mmap_lock(mapping)		xa_lock_irq(&mapping->i_pages)

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#define flush_dcache_mmap_unlock(mapping)	xa_unlock_irq(&mapping->i_pages)

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#define flush_dcache_mmap_lock_irqsave(mapping, flags)		\

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		xa_lock_irqsave(&mapping->i_pages, flags)

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#define flush_dcache_mmap_unlock_irqrestore(mapping, flags)	\

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		xa_unlock_irqrestore(&mapping->i_pages, flags)

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#endif /* _ASM_NIOS2_CACHEFLUSH_H */

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