Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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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/* vmap range flushes and invalidates. Architecturally, we don't need
42 * the invalidate, because the CPU should refuse to speculate once an
43 * area has been flushed, so invalidate is left empty */
44static inline void flush_kernel_vmap_range(void *vaddr, int size)
45{
46 unsigned long start = (unsigned long)vaddr;
47
48 flush_kernel_dcache_range_asm(start, start + size);
49}
50static inline void invalidate_kernel_vmap_range(void *vaddr, int size)
51{
52}
53
54#define flush_cache_vmap(start, end) flush_cache_all()
55#define flush_cache_vunmap(start, end) flush_cache_all()
56
57#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
58extern void flush_dcache_page(struct page *page);
59
60#define flush_dcache_mmap_lock(mapping) \
61 spin_lock_irq(&(mapping)->tree_lock)
62#define flush_dcache_mmap_unlock(mapping) \
63 spin_unlock_irq(&(mapping)->tree_lock)
64
65#define flush_icache_page(vma,page) do { \
66 flush_kernel_dcache_page(page); \
67 flush_kernel_icache_page(page_address(page)); \
68} while (0)
69
70#define flush_icache_range(s,e) do { \
71 flush_kernel_dcache_range_asm(s,e); \
72 flush_kernel_icache_range_asm(s,e); \
73} while (0)
74
75#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
76do { \
77 flush_cache_page(vma, vaddr, page_to_pfn(page)); \
78 memcpy(dst, src, len); \
79 flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \
80} while (0)
81
82#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
83do { \
84 flush_cache_page(vma, vaddr, page_to_pfn(page)); \
85 memcpy(dst, src, len); \
86} while (0)
87
88void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn);
89void flush_cache_range(struct vm_area_struct *vma,
90 unsigned long start, unsigned long end);
91
92#define ARCH_HAS_FLUSH_ANON_PAGE
93static inline void
94flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
95{
96 if (PageAnon(page))
97 flush_user_dcache_page(vmaddr);
98}
99
100#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
101void flush_kernel_dcache_page_addr(void *addr);
102static inline void flush_kernel_dcache_page(struct page *page)
103{
104 flush_kernel_dcache_page_addr(page_address(page));
105}
106
107#ifdef CONFIG_DEBUG_RODATA
108void mark_rodata_ro(void);
109#endif
110
111#ifdef CONFIG_PA8X00
112/* Only pa8800, pa8900 needs this */
113
114#include <asm/kmap_types.h>
115
116#define ARCH_HAS_KMAP
117
118void kunmap_parisc(void *addr);
119
120static inline void *kmap(struct page *page)
121{
122 might_sleep();
123 return page_address(page);
124}
125
126#define kunmap(page) kunmap_parisc(page_address(page))
127
128#define kmap_atomic(page, idx) page_address(page)
129
130#define kunmap_atomic(addr, idx) kunmap_parisc(addr)
131
132#define kmap_atomic_pfn(pfn, idx) page_address(pfn_to_page(pfn))
133#define kmap_atomic_to_page(ptr) virt_to_page(ptr)
134#endif
135
136#endif /* _PARISC_CACHEFLUSH_H */
137