Linux kernel mirror (for testing)
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linux
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_vunmap(start, end) flush_cache_all()
45
46void flush_dcache_folio(struct folio *folio);
47#define flush_dcache_folio flush_dcache_folio
48#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
49static inline void flush_dcache_page(struct page *page)
50{
51 flush_dcache_folio(page_folio(page));
52}
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
61void flush_icache_pages(struct vm_area_struct *vma, struct page *page,
62 unsigned int nr);
63#define flush_icache_pages flush_icache_pages
64
65#define flush_icache_range(s,e) do { \
66 flush_kernel_dcache_range_asm(s,e); \
67 flush_kernel_icache_range_asm(s,e); \
68} while (0)
69
70void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
71 unsigned long user_vaddr, void *dst, void *src, int len);
72void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
73 unsigned long user_vaddr, void *dst, void *src, int len);
74void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr,
75 unsigned long pfn);
76void flush_cache_range(struct vm_area_struct *vma,
77 unsigned long start, unsigned long end);
78
79/* defined in pacache.S exported in cache.c used by flush_anon_page */
80void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr);
81
82#define ARCH_HAS_FLUSH_ANON_PAGE
83void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr);
84
85#define ARCH_HAS_FLUSH_ON_KUNMAP
86static inline void kunmap_flush_on_unmap(const void *addr)
87{
88 flush_kernel_dcache_page_addr(addr);
89}
90
91#endif /* _PARISC_CACHEFLUSH_H */
92