1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _PARISC_CACHEFLUSH_H
3#define _PARISC_CACHEFLUSH_H
4
5#include <linux/mm.h>
6#include <linux/uaccess.h>
7#include <asm/tlbflush.h>
8
9/* The usual comment is "Caches aren't brain-dead on the <architecture>".
10 * Unfortunately, that doesn't apply to PA-RISC. */
11
12#include <linux/jump_label.h>
13
14DECLARE_STATIC_KEY_TRUE(parisc_has_cache);
15DECLARE_STATIC_KEY_TRUE(parisc_has_dcache);
16DECLARE_STATIC_KEY_TRUE(parisc_has_icache);
17
18#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
19
20void flush_user_icache_range_asm(unsigned long, unsigned long);
21void flush_kernel_icache_range_asm(unsigned long, unsigned long);
22void flush_user_dcache_range_asm(unsigned long, unsigned long);
23void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
24void purge_kernel_dcache_range_asm(unsigned long, unsigned long);
25void flush_kernel_dcache_page_asm(const void *addr);
26void flush_kernel_icache_page(void *);
27
28/* Cache flush operations */
29
30void flush_cache_all_local(void);
31void flush_cache_all(void);
32void flush_cache_mm(struct mm_struct *mm);
33
34void flush_kernel_dcache_page_addr(const void *addr);
35
36#define flush_kernel_dcache_range(start,size) \
37	flush_kernel_dcache_range_asm((start), (start)+(size));
38
39#define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1
40void flush_kernel_vmap_range(void *vaddr, int size);
41void invalidate_kernel_vmap_range(void *vaddr, int size);
42
43#define flush_cache_vmap(start, end)		flush_cache_all()
44#define flush_cache_vmap_early(start, end)	do { } while (0)
45#define flush_cache_vunmap(start, end)		flush_cache_all()
46
47void flush_dcache_folio(struct folio *folio);
48#define flush_dcache_folio flush_dcache_folio
49#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
50static inline void flush_dcache_page(struct page *page)
51{
52	flush_dcache_folio(page_folio(page));
53}
54
55#define flush_dcache_mmap_lock(mapping)		xa_lock_irq(&mapping->i_pages)
56#define flush_dcache_mmap_unlock(mapping)	xa_unlock_irq(&mapping->i_pages)
57#define flush_dcache_mmap_lock_irqsave(mapping, flags)		\
58		xa_lock_irqsave(&mapping->i_pages, flags)
59#define flush_dcache_mmap_unlock_irqrestore(mapping, flags)	\
60		xa_unlock_irqrestore(&mapping->i_pages, flags)
61
62void flush_icache_pages(struct vm_area_struct *vma, struct page *page,
63		unsigned int nr);
64#define flush_icache_pages flush_icache_pages
65
66#define flush_icache_range(s,e)		do { 		\
67	flush_kernel_dcache_range_asm(s,e); 		\
68	flush_kernel_icache_range_asm(s,e); 		\
69} while (0)
70
71void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
72		unsigned long user_vaddr, void *dst, void *src, int len);
73void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
74		unsigned long user_vaddr, void *dst, void *src, int len);
75void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr,
76		unsigned long pfn);
77void flush_cache_range(struct vm_area_struct *vma,
78		unsigned long start, unsigned long end);
79
80/* defined in pacache.S exported in cache.c used by flush_anon_page */
81void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr);
82
83#define ARCH_HAS_FLUSH_ANON_PAGE
84void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr);
85
86#define ARCH_HAS_FLUSH_ON_KUNMAP
87static inline void kunmap_flush_on_unmap(const void *addr)
88{
89	flush_kernel_dcache_page_addr(addr);
90}
91
92#endif /* _PARISC_CACHEFLUSH_H */
93
94