Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _PARISC_CACHEFLUSH_H
2#define _PARISC_CACHEFLUSH_H
3
4#include <linux/mm.h>
5
6/* The usual comment is "Caches aren't brain-dead on the <architecture>".
7 * Unfortunately, that doesn't apply to PA-RISC. */
8
9/* Internal implementation */
10void flush_data_cache_local(void *); /* flushes local data-cache only */
11void flush_instruction_cache_local(void *); /* flushes local code-cache only */
12#ifdef CONFIG_SMP
13void flush_data_cache(void); /* flushes data-cache only (all processors) */
14void flush_instruction_cache(void); /* flushes i-cache only (all processors) */
15#else
16#define flush_data_cache() flush_data_cache_local(NULL)
17#define flush_instruction_cache() flush_instruction_cache_local(NULL)
18#endif
19
20#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
21
22void flush_user_icache_range_asm(unsigned long, unsigned long);
23void flush_kernel_icache_range_asm(unsigned long, unsigned long);
24void flush_user_dcache_range_asm(unsigned long, unsigned long);
25void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
26void flush_kernel_dcache_page_asm(void *);
27void flush_kernel_icache_page(void *);
28void flush_user_dcache_page(unsigned long);
29void flush_user_icache_page(unsigned long);
30void flush_user_dcache_range(unsigned long, unsigned long);
31void flush_user_icache_range(unsigned long, unsigned long);
32
33/* Cache flush operations */
34
35void flush_cache_all_local(void);
36void flush_cache_all(void);
37void flush_cache_mm(struct mm_struct *mm);
38
39#define flush_kernel_dcache_range(start,size) \
40 flush_kernel_dcache_range_asm((start), (start)+(size));
41
42#define flush_cache_vmap(start, end) flush_cache_all()
43#define flush_cache_vunmap(start, end) flush_cache_all()
44
45#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
46extern void flush_dcache_page(struct page *page);
47
48#define flush_dcache_mmap_lock(mapping) \
49 spin_lock_irq(&(mapping)->tree_lock)
50#define flush_dcache_mmap_unlock(mapping) \
51 spin_unlock_irq(&(mapping)->tree_lock)
52
53#define flush_icache_page(vma,page) do { \
54 flush_kernel_dcache_page(page); \
55 flush_kernel_icache_page(page_address(page)); \
56} while (0)
57
58#define flush_icache_range(s,e) do { \
59 flush_kernel_dcache_range_asm(s,e); \
60 flush_kernel_icache_range_asm(s,e); \
61} while (0)
62
63#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
64do { \
65 flush_cache_page(vma, vaddr, page_to_pfn(page)); \
66 memcpy(dst, src, len); \
67 flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \
68} while (0)
69
70#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
71do { \
72 flush_cache_page(vma, vaddr, page_to_pfn(page)); \
73 memcpy(dst, src, len); \
74} while (0)
75
76void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn);
77void flush_cache_range(struct vm_area_struct *vma,
78 unsigned long start, unsigned long end);
79
80#define ARCH_HAS_FLUSH_ANON_PAGE
81static inline void
82flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
83{
84 if (PageAnon(page))
85 flush_user_dcache_page(vmaddr);
86}
87
88#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
89void flush_kernel_dcache_page_addr(void *addr);
90static inline void flush_kernel_dcache_page(struct page *page)
91{
92 flush_kernel_dcache_page_addr(page_address(page));
93}
94
95#ifdef CONFIG_DEBUG_RODATA
96void mark_rodata_ro(void);
97#endif
98
99#ifdef CONFIG_PA8X00
100/* Only pa8800, pa8900 needs this */
101
102#include <asm/kmap_types.h>
103
104#define ARCH_HAS_KMAP
105
106void kunmap_parisc(void *addr);
107
108static inline void *kmap(struct page *page)
109{
110 might_sleep();
111 return page_address(page);
112}
113
114#define kunmap(page) kunmap_parisc(page_address(page))
115
116#define kmap_atomic(page, idx) page_address(page)
117
118#define kunmap_atomic(addr, idx) kunmap_parisc(addr)
119
120#define kmap_atomic_pfn(pfn, idx) page_address(pfn_to_page(pfn))
121#define kmap_atomic_to_page(ptr) virt_to_page(ptr)
122#endif
123
124#endif /* _PARISC_CACHEFLUSH_H */
125