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
14 DECLARE_STATIC_KEY_TRUE(parisc_has_cache);
15 DECLARE_STATIC_KEY_TRUE(parisc_has_dcache);
16 DECLARE_STATIC_KEY_TRUE(parisc_has_icache);
17
18 #define flush_cache_dup_mm(mm) flush_cache_mm(mm)
19
20 void flush_user_icache_range_asm(unsigned long, unsigned long);
21 void flush_kernel_icache_range_asm(unsigned long, unsigned long);
22 void flush_user_dcache_range_asm(unsigned long, unsigned long);
23 void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
24 void purge_kernel_dcache_range_asm(unsigned long, unsigned long);
25 void flush_kernel_dcache_page_asm(const void *addr);
26 void flush_kernel_icache_page(void *);
27
28 /* Cache flush operations */
29
30 void flush_cache_all_local(void);
31 void flush_cache_all(void);
32 void flush_cache_mm(struct mm_struct *mm);
33
34 #define flush_kernel_dcache_range(start,size) \
35 flush_kernel_dcache_range_asm((start), (start)+(size));
36
37 /* The only way to flush a vmap range is to flush whole cache */
38 #define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1
39 void flush_kernel_vmap_range(void *vaddr, int size);
40 void invalidate_kernel_vmap_range(void *vaddr, int size);
41
42 void flush_cache_vmap(unsigned long start, unsigned long end);
43 #define flush_cache_vmap_early(start, end) do { } while (0)
44 void flush_cache_vunmap(unsigned long start, unsigned long end);
45
46 void flush_dcache_folio(struct folio *folio);
47 #define flush_dcache_folio flush_dcache_folio
48 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
flush_dcache_page(struct page * page)49 static 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
61 void 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
70 void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
71 unsigned long user_vaddr, void *dst, void *src, int len);
72 void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
73 unsigned long user_vaddr, void *dst, void *src, int len);
74 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr,
75 unsigned long pfn);
76 void flush_cache_range(struct vm_area_struct *vma,
77 unsigned long start, unsigned long end);
78
79 #define ARCH_HAS_FLUSH_ANON_PAGE
80 void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr);
81
82 #define ARCH_HAS_FLUSH_ON_KUNMAP
83 void kunmap_flush_on_unmap(const void *addr);
84
85 #endif /* _PARISC_CACHEFLUSH_H */
86
87