Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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
46#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
47void flush_dcache_page(struct page *page);
48
49#define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages)
50#define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages)
51#define flush_dcache_mmap_lock_irqsave(mapping, flags) \
52 xa_lock_irqsave(&mapping->i_pages, flags)
53#define flush_dcache_mmap_unlock_irqrestore(mapping, flags) \
54 xa_unlock_irqrestore(&mapping->i_pages, flags)
55
56#define flush_icache_page(vma,page) do { \
57 flush_kernel_dcache_page_addr(page_address(page)); \
58 flush_kernel_icache_page(page_address(page)); \
59} while (0)
60
61#define flush_icache_range(s,e) do { \
62 flush_kernel_dcache_range_asm(s,e); \
63 flush_kernel_icache_range_asm(s,e); \
64} while (0)
65
66void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
67 unsigned long user_vaddr, void *dst, void *src, int len);
68void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
69 unsigned long user_vaddr, void *dst, void *src, int len);
70void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr,
71 unsigned long pfn);
72void flush_cache_range(struct vm_area_struct *vma,
73 unsigned long start, unsigned long end);
74
75/* defined in pacache.S exported in cache.c used by flush_anon_page */
76void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr);
77
78#define ARCH_HAS_FLUSH_ANON_PAGE
79void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr);
80
81#define ARCH_HAS_FLUSH_ON_KUNMAP
82static inline void kunmap_flush_on_unmap(const void *addr)
83{
84 flush_kernel_dcache_page_addr(addr);
85}
86
87#endif /* _PARISC_CACHEFLUSH_H */
88