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