1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _PARISC_CACHEFLUSH_H
3 #define _PARISC_CACHEFLUSH_H
6 #include <linux/uaccess.h>
7 #include <asm/tlbflush.h>
9 /* The usual comment is "Caches aren't brain-dead on the <architecture>".
10 * Unfortunately, that doesn't apply to PA-RISC. */
12 #include <linux/jump_label.h>
14 DECLARE_STATIC_KEY_TRUE(parisc_has_cache);
15 DECLARE_STATIC_KEY_TRUE(parisc_has_dcache);
16 DECLARE_STATIC_KEY_TRUE(parisc_has_icache);
18 #define flush_cache_dup_mm(mm) flush_cache_mm(mm)
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 *);
28 /* Cache flush operations */
30 void flush_cache_all_local(void);
31 void flush_cache_all(void);
32 void flush_cache_mm(struct mm_struct *mm);
34 void flush_kernel_dcache_page_addr(const void *addr);
36 #define flush_kernel_dcache_range(start,size) \
37 flush_kernel_dcache_range_asm((start), (start)+(size));
39 #define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1
40 void flush_kernel_vmap_range(void *vaddr, int size);
41 void invalidate_kernel_vmap_range(void *vaddr, int size);
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()
47 void flush_dcache_folio(struct folio *folio);
48 #define flush_dcache_folio flush_dcache_folio
49 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
50 static inline void flush_dcache_page(struct page *page)
52 flush_dcache_folio(page_folio(page));
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)
62 void flush_icache_pages(struct vm_area_struct *vma, struct page *page,
64 #define flush_icache_pages flush_icache_pages
66 #define flush_icache_range(s,e) do { \
67 flush_kernel_dcache_range_asm(s,e); \
68 flush_kernel_icache_range_asm(s,e); \
71 void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
72 unsigned long user_vaddr, void *dst, void *src, int len);
73 void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
74 unsigned long user_vaddr, void *dst, void *src, int len);
75 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr,
77 void flush_cache_range(struct vm_area_struct *vma,
78 unsigned long start, unsigned long end);
80 /* defined in pacache.S exported in cache.c used by flush_anon_page */
81 void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr);
83 #define ARCH_HAS_FLUSH_ANON_PAGE
84 void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr);
86 #define ARCH_HAS_FLUSH_ON_KUNMAP
87 static inline void kunmap_flush_on_unmap(const void *addr)
89 flush_kernel_dcache_page_addr(addr);
92 #endif /* _PARISC_CACHEFLUSH_H */