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Diffstat (limited to 'include/asm-sparc64/page.h')
-rw-r--r--include/asm-sparc64/page.h143
1 files changed, 1 insertions, 142 deletions
diff --git a/include/asm-sparc64/page.h b/include/asm-sparc64/page.h
index 93f0881b766e..f46c1fb53028 100644
--- a/include/asm-sparc64/page.h
+++ b/include/asm-sparc64/page.h
@@ -1,142 +1 @@
1#ifndef _SPARC64_PAGE_H #include <asm-sparc/page.h>
2#define _SPARC64_PAGE_H
3
4#include <linux/const.h>
5
6#if defined(CONFIG_SPARC64_PAGE_SIZE_8KB)
7#define PAGE_SHIFT 13
8#elif defined(CONFIG_SPARC64_PAGE_SIZE_64KB)
9#define PAGE_SHIFT 16
10#elif defined(CONFIG_SPARC64_PAGE_SIZE_512KB)
11#define PAGE_SHIFT 19
12#elif defined(CONFIG_SPARC64_PAGE_SIZE_4MB)
13#define PAGE_SHIFT 22
14#else
15#error No page size specified in kernel configuration
16#endif
17
18#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
19#define PAGE_MASK (~(PAGE_SIZE-1))
20
21/* Flushing for D-cache alias handling is only needed if
22 * the page size is smaller than 16K.
23 */
24#if PAGE_SHIFT < 14
25#define DCACHE_ALIASING_POSSIBLE
26#endif
27
28#if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
29#define HPAGE_SHIFT 22
30#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
31#define HPAGE_SHIFT 19
32#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
33#define HPAGE_SHIFT 16
34#endif
35
36#ifdef CONFIG_HUGETLB_PAGE
37#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT)
38#define HPAGE_MASK (~(HPAGE_SIZE - 1UL))
39#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
40#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
41#endif
42
43#ifndef __ASSEMBLY__
44
45extern void _clear_page(void *page);
46#define clear_page(X) _clear_page((void *)(X))
47struct page;
48extern void clear_user_page(void *addr, unsigned long vaddr, struct page *page);
49#define copy_page(X,Y) memcpy((void *)(X), (void *)(Y), PAGE_SIZE)
50extern void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *topage);
51
52/* Unlike sparc32, sparc64's parameter passing API is more
53 * sane in that structures which as small enough are passed
54 * in registers instead of on the stack. Thus, setting
55 * STRICT_MM_TYPECHECKS does not generate worse code so
56 * let's enable it to get the type checking.
57 */
58
59#define STRICT_MM_TYPECHECKS
60
61#ifdef STRICT_MM_TYPECHECKS
62/* These are used to make use of C type-checking.. */
63typedef struct { unsigned long pte; } pte_t;
64typedef struct { unsigned long iopte; } iopte_t;
65typedef struct { unsigned int pmd; } pmd_t;
66typedef struct { unsigned int pgd; } pgd_t;
67typedef struct { unsigned long pgprot; } pgprot_t;
68
69#define pte_val(x) ((x).pte)
70#define iopte_val(x) ((x).iopte)
71#define pmd_val(x) ((x).pmd)
72#define pgd_val(x) ((x).pgd)
73#define pgprot_val(x) ((x).pgprot)
74
75#define __pte(x) ((pte_t) { (x) } )
76#define __iopte(x) ((iopte_t) { (x) } )
77#define __pmd(x) ((pmd_t) { (x) } )
78#define __pgd(x) ((pgd_t) { (x) } )
79#define __pgprot(x) ((pgprot_t) { (x) } )
80
81#else
82/* .. while these make it easier on the compiler */
83typedef unsigned long pte_t;
84typedef unsigned long iopte_t;
85typedef unsigned int pmd_t;
86typedef unsigned int pgd_t;
87typedef unsigned long pgprot_t;
88
89#define pte_val(x) (x)
90#define iopte_val(x) (x)
91#define pmd_val(x) (x)
92#define pgd_val(x) (x)
93#define pgprot_val(x) (x)
94
95#define __pte(x) (x)
96#define __iopte(x) (x)
97#define __pmd(x) (x)
98#define __pgd(x) (x)
99#define __pgprot(x) (x)
100
101#endif /* (STRICT_MM_TYPECHECKS) */
102
103typedef struct page *pgtable_t;
104
105#define TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \
106 (_AC(0x0000000070000000,UL)) : \
107 (_AC(0xfffff80000000000,UL) + (1UL << 32UL)))
108
109#include <asm-generic/memory_model.h>
110
111#endif /* !(__ASSEMBLY__) */
112
113/* to align the pointer to the (next) page boundary */
114#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
115
116/* We used to stick this into a hard-coded global register (%g4)
117 * but that does not make sense anymore.
118 */
119#define PAGE_OFFSET _AC(0xFFFFF80000000000,UL)
120
121#ifndef __ASSEMBLY__
122
123#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
124#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
125
126#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
127
128#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr)>>PAGE_SHIFT)
129
130#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
131
132#define virt_to_phys __pa
133#define phys_to_virt __va
134
135#endif /* !(__ASSEMBLY__) */
136
137#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
138 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
139
140#include <asm-generic/page.h>
141
142#endif /* _SPARC64_PAGE_H */