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Source at commit 87be2f88b24ad1f206a5c87529ff406e96c95a12 created 10 years 11 months ago. By John David Anglin, parisc: Change kunmap macro to static inline function | |
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1 | #ifndef _PARISC_CACHEFLUSH_H |
2 | #define _PARISC_CACHEFLUSH_H |
3 | |
4 | #include <linux/mm.h> |
5 | #include <linux/uaccess.h> |
6 | #include <asm/tlbflush.h> |
7 | |
8 | /* The usual comment is "Caches aren't brain-dead on the <architecture>". |
9 | * Unfortunately, that doesn't apply to PA-RISC. */ |
10 | |
11 | /* Internal implementation */ |
12 | void flush_data_cache_local(void *); /* flushes local data-cache only */ |
13 | void flush_instruction_cache_local(void *); /* flushes local code-cache only */ |
14 | #ifdef CONFIG_SMP |
15 | void flush_data_cache(void); /* flushes data-cache only (all processors) */ |
16 | void flush_instruction_cache(void); /* flushes i-cache only (all processors) */ |
17 | #else |
18 | #define flush_data_cache() flush_data_cache_local(NULL) |
19 | #define flush_instruction_cache() flush_instruction_cache_local(NULL) |
20 | #endif |
21 | |
22 | #define flush_cache_dup_mm(mm) flush_cache_mm(mm) |
23 | |
24 | void flush_user_icache_range_asm(unsigned long, unsigned long); |
25 | void flush_kernel_icache_range_asm(unsigned long, unsigned long); |
26 | void flush_user_dcache_range_asm(unsigned long, unsigned long); |
27 | void flush_kernel_dcache_range_asm(unsigned long, unsigned long); |
28 | void flush_kernel_dcache_page_asm(void *); |
29 | void flush_kernel_icache_page(void *); |
30 | void flush_user_dcache_range(unsigned long, unsigned long); |
31 | void flush_user_icache_range(unsigned long, unsigned long); |
32 | |
33 | /* Cache flush operations */ |
34 | |
35 | void flush_cache_all_local(void); |
36 | void flush_cache_all(void); |
37 | void flush_cache_mm(struct mm_struct *mm); |
38 | |
39 | #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE |
40 | void flush_kernel_dcache_page_addr(void *addr); |
41 | static inline void flush_kernel_dcache_page(struct page *page) |
42 | { |
43 | flush_kernel_dcache_page_addr(page_address(page)); |
44 | } |
45 | |
46 | #define flush_kernel_dcache_range(start,size) \ |
47 | flush_kernel_dcache_range_asm((start), (start)+(size)); |
48 | /* vmap range flushes and invalidates. Architecturally, we don't need |
49 | * the invalidate, because the CPU should refuse to speculate once an |
50 | * area has been flushed, so invalidate is left empty */ |
51 | static inline void flush_kernel_vmap_range(void *vaddr, int size) |
52 | { |
53 | unsigned long start = (unsigned long)vaddr; |
54 | |
55 | flush_kernel_dcache_range_asm(start, start + size); |
56 | } |
57 | static inline void invalidate_kernel_vmap_range(void *vaddr, int size) |
58 | { |
59 | unsigned long start = (unsigned long)vaddr; |
60 | void *cursor = vaddr; |
61 | |
62 | for ( ; cursor < vaddr + size; cursor += PAGE_SIZE) { |
63 | struct page *page = vmalloc_to_page(cursor); |
64 | |
65 | if (test_and_clear_bit(PG_dcache_dirty, &page->flags)) |
66 | flush_kernel_dcache_page(page); |
67 | } |
68 | flush_kernel_dcache_range_asm(start, start + size); |
69 | } |
70 | |
71 | #define flush_cache_vmap(start, end) flush_cache_all() |
72 | #define flush_cache_vunmap(start, end) flush_cache_all() |
73 | |
74 | #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 |
75 | extern void flush_dcache_page(struct page *page); |
76 | |
77 | #define flush_dcache_mmap_lock(mapping) \ |
78 | spin_lock_irq(&(mapping)->tree_lock) |
79 | #define flush_dcache_mmap_unlock(mapping) \ |
80 | spin_unlock_irq(&(mapping)->tree_lock) |
81 | |
82 | #define flush_icache_page(vma,page) do { \ |
83 | flush_kernel_dcache_page(page); \ |
84 | flush_kernel_icache_page(page_address(page)); \ |
85 | } while (0) |
86 | |
87 | #define flush_icache_range(s,e) do { \ |
88 | flush_kernel_dcache_range_asm(s,e); \ |
89 | flush_kernel_icache_range_asm(s,e); \ |
90 | } while (0) |
91 | |
92 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ |
93 | do { \ |
94 | flush_cache_page(vma, vaddr, page_to_pfn(page)); \ |
95 | memcpy(dst, src, len); \ |
96 | flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \ |
97 | } while (0) |
98 | |
99 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ |
100 | do { \ |
101 | flush_cache_page(vma, vaddr, page_to_pfn(page)); \ |
102 | memcpy(dst, src, len); \ |
103 | } while (0) |
104 | |
105 | void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn); |
106 | void flush_cache_range(struct vm_area_struct *vma, |
107 | unsigned long start, unsigned long end); |
108 | |
109 | /* defined in pacache.S exported in cache.c used by flush_anon_page */ |
110 | void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr); |
111 | |
112 | #define ARCH_HAS_FLUSH_ANON_PAGE |
113 | static inline void |
114 | flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr) |
115 | { |
116 | if (PageAnon(page)) { |
117 | flush_tlb_page(vma, vmaddr); |
118 | preempt_disable(); |
119 | flush_dcache_page_asm(page_to_phys(page), vmaddr); |
120 | preempt_enable(); |
121 | } |
122 | } |
123 | |
124 | #ifdef CONFIG_DEBUG_RODATA |
125 | void mark_rodata_ro(void); |
126 | #endif |
127 | |
128 | #ifdef CONFIG_PA8X00 |
129 | /* Only pa8800, pa8900 needs this */ |
130 | |
131 | #include <asm/kmap_types.h> |
132 | |
133 | #define ARCH_HAS_KMAP |
134 | |
135 | void kunmap_parisc(void *addr); |
136 | |
137 | static inline void *kmap(struct page *page) |
138 | { |
139 | might_sleep(); |
140 | return page_address(page); |
141 | } |
142 | |
143 | static inline void kunmap(struct page *page) |
144 | { |
145 | kunmap_parisc(page_address(page)); |
146 | } |
147 | |
148 | static inline void *kmap_atomic(struct page *page) |
149 | { |
150 | pagefault_disable(); |
151 | return page_address(page); |
152 | } |
153 | |
154 | static inline void __kunmap_atomic(void *addr) |
155 | { |
156 | kunmap_parisc(addr); |
157 | pagefault_enable(); |
158 | } |
159 | |
160 | #define kmap_atomic_prot(page, prot) kmap_atomic(page) |
161 | #define kmap_atomic_pfn(pfn) kmap_atomic(pfn_to_page(pfn)) |
162 | #define kmap_atomic_to_page(ptr) virt_to_page(ptr) |
163 | #endif |
164 | |
165 | #endif /* _PARISC_CACHEFLUSH_H */ |
166 | |
167 |
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