1/*
2 * Copyright (C) 2003 Microtronix Datacom Ltd.
3 * Copyright (C) 2000-2002 Greg Ungerer <gerg@snapgear.com>
4 *
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License. See the file "COPYING" in the main directory of this archive
7 * for more details.
8 */
9
10#ifndef _ASM_NIOS2_CACHEFLUSH_H
11#define _ASM_NIOS2_CACHEFLUSH_H
12
13#include <linux/mm_types.h>
14
15/*
16 * This flag is used to indicate that the page pointed to by a pte is clean
17 * and does not require cleaning before returning it to the user.
18 */
19#define PG_dcache_clean PG_arch_1
20
21struct mm_struct;
22
23extern void flush_cache_all(void);
24extern void flush_cache_mm(struct mm_struct *mm);
25extern void flush_cache_dup_mm(struct mm_struct *mm);
26extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
27	unsigned long end);
28extern void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr,
29	unsigned long pfn);
30#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
31void flush_dcache_page(struct page *page);
32void flush_dcache_folio(struct folio *folio);
33#define flush_dcache_folio flush_dcache_folio
34
35extern void flush_icache_range(unsigned long start, unsigned long end);
36void flush_icache_pages(struct vm_area_struct *vma, struct page *page,
37		unsigned int nr);
38#define flush_icache_pages flush_icache_pages
39
40#define flush_cache_vmap(start, end)		flush_dcache_range(start, end)
41#define flush_cache_vmap_early(start, end)	do { } while (0)
42#define flush_cache_vunmap(start, end)		flush_dcache_range(start, end)
43
44extern void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
45				unsigned long user_vaddr,
46				void *dst, void *src, int len);
47extern void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
48				unsigned long user_vaddr,
49				void *dst, void *src, int len);
50
51extern void flush_dcache_range(unsigned long start, unsigned long end);
52extern void invalidate_dcache_range(unsigned long start, unsigned long end);
53
54#define flush_dcache_mmap_lock(mapping)		xa_lock_irq(&mapping->i_pages)
55#define flush_dcache_mmap_unlock(mapping)	xa_unlock_irq(&mapping->i_pages)
56#define flush_dcache_mmap_lock_irqsave(mapping, flags)		\
57		xa_lock_irqsave(&mapping->i_pages, flags)
58#define flush_dcache_mmap_unlock_irqrestore(mapping, flags)	\
59		xa_unlock_irqrestore(&mapping->i_pages, flags)
60
61#endif /* _ASM_NIOS2_CACHEFLUSH_H */
62