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f5e706ad SR |
1 | #ifndef _SPARC64_PAGE_H |
2 | #define _SPARC64_PAGE_H | |
3 | ||
4 | #include <linux/const.h> | |
5 | ||
f5e706ad | 6 | #define PAGE_SHIFT 13 |
f5e706ad SR |
7 | |
8 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) | |
9 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
10 | ||
11 | /* Flushing for D-cache alias handling is only needed if | |
12 | * the page size is smaller than 16K. | |
13 | */ | |
14 | #if PAGE_SHIFT < 14 | |
15 | #define DCACHE_ALIASING_POSSIBLE | |
16 | #endif | |
17 | ||
37b3a8ff DM |
18 | #define HPAGE_SHIFT 23 |
19 | #define REAL_HPAGE_SHIFT 22 | |
20 | ||
21 | #define REAL_HPAGE_SIZE (_AC(1,UL) << REAL_HPAGE_SHIFT) | |
f5e706ad | 22 | |
9e695d2e | 23 | #if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE) |
f5e706ad SR |
24 | #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) |
25 | #define HPAGE_MASK (~(HPAGE_SIZE - 1UL)) | |
26 | #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) | |
27 | #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA | |
1e953d84 | 28 | #define REAL_HPAGE_PER_HPAGE (_AC(1,UL) << (HPAGE_SHIFT - REAL_HPAGE_SHIFT)) |
f5e706ad SR |
29 | #endif |
30 | ||
31 | #ifndef __ASSEMBLY__ | |
32 | ||
9e695d2e | 33 | #if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE) |
0fbebed6 | 34 | struct pt_regs; |
f05a6865 | 35 | void hugetlb_setup(struct pt_regs *regs); |
9e695d2e DM |
36 | #endif |
37 | ||
b0f1e796 DM |
38 | #define WANT_PAGE_VIRTUAL |
39 | ||
f05a6865 | 40 | void _clear_page(void *page); |
f5e706ad SR |
41 | #define clear_page(X) _clear_page((void *)(X)) |
42 | struct page; | |
f05a6865 | 43 | void clear_user_page(void *addr, unsigned long vaddr, struct page *page); |
f5e706ad | 44 | #define copy_page(X,Y) memcpy((void *)(X), (void *)(Y), PAGE_SIZE) |
f05a6865 | 45 | void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *topage); |
f5e706ad SR |
46 | |
47 | /* Unlike sparc32, sparc64's parameter passing API is more | |
48 | * sane in that structures which as small enough are passed | |
49 | * in registers instead of on the stack. Thus, setting | |
50 | * STRICT_MM_TYPECHECKS does not generate worse code so | |
51 | * let's enable it to get the type checking. | |
52 | */ | |
53 | ||
54 | #define STRICT_MM_TYPECHECKS | |
55 | ||
56 | #ifdef STRICT_MM_TYPECHECKS | |
57 | /* These are used to make use of C type-checking.. */ | |
58 | typedef struct { unsigned long pte; } pte_t; | |
59 | typedef struct { unsigned long iopte; } iopte_t; | |
2b77933c | 60 | typedef struct { unsigned long pmd; } pmd_t; |
ac55c768 | 61 | typedef struct { unsigned long pud; } pud_t; |
2b77933c | 62 | typedef struct { unsigned long pgd; } pgd_t; |
f5e706ad SR |
63 | typedef struct { unsigned long pgprot; } pgprot_t; |
64 | ||
65 | #define pte_val(x) ((x).pte) | |
66 | #define iopte_val(x) ((x).iopte) | |
67 | #define pmd_val(x) ((x).pmd) | |
ac55c768 | 68 | #define pud_val(x) ((x).pud) |
f5e706ad SR |
69 | #define pgd_val(x) ((x).pgd) |
70 | #define pgprot_val(x) ((x).pgprot) | |
71 | ||
72 | #define __pte(x) ((pte_t) { (x) } ) | |
73 | #define __iopte(x) ((iopte_t) { (x) } ) | |
74 | #define __pmd(x) ((pmd_t) { (x) } ) | |
ac55c768 | 75 | #define __pud(x) ((pud_t) { (x) } ) |
f5e706ad SR |
76 | #define __pgd(x) ((pgd_t) { (x) } ) |
77 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
78 | ||
79 | #else | |
80 | /* .. while these make it easier on the compiler */ | |
81 | typedef unsigned long pte_t; | |
82 | typedef unsigned long iopte_t; | |
2b77933c | 83 | typedef unsigned long pmd_t; |
ac55c768 | 84 | typedef unsigned long pud_t; |
2b77933c | 85 | typedef unsigned long pgd_t; |
f5e706ad SR |
86 | typedef unsigned long pgprot_t; |
87 | ||
88 | #define pte_val(x) (x) | |
89 | #define iopte_val(x) (x) | |
90 | #define pmd_val(x) (x) | |
ac55c768 | 91 | #define pud_val(x) (x) |
f5e706ad SR |
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) | |
ac55c768 | 98 | #define __pud(x) (x) |
f5e706ad SR |
99 | #define __pgd(x) (x) |
100 | #define __pgprot(x) (x) | |
101 | ||
102 | #endif /* (STRICT_MM_TYPECHECKS) */ | |
103 | ||
c460bec7 | 104 | typedef pte_t *pgtable_t; |
f5e706ad | 105 | |
4397bed0 DM |
106 | extern unsigned long sparc64_va_hole_top; |
107 | extern unsigned long sparc64_va_hole_bottom; | |
c920745e | 108 | |
2b77933c DM |
109 | /* The next two defines specify the actual exclusion region we |
110 | * enforce, wherein we use a 4GB red zone on each side of the VA hole. | |
111 | */ | |
4397bed0 DM |
112 | #define VA_EXCLUDE_START (sparc64_va_hole_bottom - (1UL << 32UL)) |
113 | #define VA_EXCLUDE_END (sparc64_va_hole_top + (1UL << 32UL)) | |
c920745e | 114 | |
f5e706ad | 115 | #define TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \ |
c920745e DM |
116 | _AC(0x0000000070000000,UL) : \ |
117 | VA_EXCLUDE_END) | |
f5e706ad SR |
118 | |
119 | #include <asm-generic/memory_model.h> | |
120 | ||
b2d43834 | 121 | extern unsigned long PAGE_OFFSET; |
f5e706ad | 122 | |
b2d43834 | 123 | #endif /* !(__ASSEMBLY__) */ |
bb7b4353 | 124 | |
7c0fa0f2 DM |
125 | /* The maximum number of physical memory address bits we support. The |
126 | * largest value we can support is whatever "KPGD_SHIFT + KPTE_BITS" | |
127 | * evaluates to. | |
bb7b4353 | 128 | */ |
7c0fa0f2 | 129 | #define MAX_PHYS_ADDRESS_BITS 53 |
bb7b4353 | 130 | |
bb7b4353 DM |
131 | #define ILOG2_4MB 22 |
132 | #define ILOG2_256MB 28 | |
133 | ||
f5e706ad SR |
134 | #ifndef __ASSEMBLY__ |
135 | ||
136 | #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET) | |
137 | #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) | |
138 | ||
139 | #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) | |
140 | ||
141 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr)>>PAGE_SHIFT) | |
142 | ||
143 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | |
144 | ||
145 | #define virt_to_phys __pa | |
146 | #define phys_to_virt __va | |
147 | ||
148 | #endif /* !(__ASSEMBLY__) */ | |
149 | ||
150 | #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ | |
151 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
152 | ||
5b17e1cd | 153 | #include <asm-generic/getorder.h> |
f5e706ad SR |
154 | |
155 | #endif /* _SPARC64_PAGE_H */ |