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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
f5e706ad SR |
2 | #ifndef _SPARC64_PAGE_H |
3 | #define _SPARC64_PAGE_H | |
4 | ||
5 | #include <linux/const.h> | |
6 | ||
f5e706ad | 7 | #define PAGE_SHIFT 13 |
f5e706ad SR |
8 | |
9 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) | |
10 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
11 | ||
12 | /* Flushing for D-cache alias handling is only needed if | |
13 | * the page size is smaller than 16K. | |
14 | */ | |
15 | #if PAGE_SHIFT < 14 | |
16 | #define DCACHE_ALIASING_POSSIBLE | |
17 | #endif | |
18 | ||
37b3a8ff DM |
19 | #define HPAGE_SHIFT 23 |
20 | #define REAL_HPAGE_SHIFT 22 | |
df7b2155 | 21 | #define HPAGE_16GB_SHIFT 34 |
85b1da7c | 22 | #define HPAGE_2GB_SHIFT 31 |
c7d9f77d | 23 | #define HPAGE_256MB_SHIFT 28 |
dcd1912d | 24 | #define HPAGE_64K_SHIFT 16 |
37b3a8ff | 25 | #define REAL_HPAGE_SIZE (_AC(1,UL) << REAL_HPAGE_SHIFT) |
f5e706ad | 26 | |
9e695d2e | 27 | #if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE) |
f5e706ad SR |
28 | #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) |
29 | #define HPAGE_MASK (~(HPAGE_SIZE - 1UL)) | |
30 | #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) | |
31 | #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA | |
1e953d84 | 32 | #define REAL_HPAGE_PER_HPAGE (_AC(1,UL) << (HPAGE_SHIFT - REAL_HPAGE_SHIFT)) |
df7b2155 | 33 | #define HUGE_MAX_HSTATE 5 |
f5e706ad SR |
34 | #endif |
35 | ||
36 | #ifndef __ASSEMBLY__ | |
37 | ||
9e695d2e | 38 | #if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE) |
0fbebed6 | 39 | struct pt_regs; |
f05a6865 | 40 | void hugetlb_setup(struct pt_regs *regs); |
9e695d2e DM |
41 | #endif |
42 | ||
b0f1e796 DM |
43 | #define WANT_PAGE_VIRTUAL |
44 | ||
f05a6865 | 45 | void _clear_page(void *page); |
f5e706ad SR |
46 | #define clear_page(X) _clear_page((void *)(X)) |
47 | struct page; | |
f05a6865 | 48 | void clear_user_page(void *addr, unsigned long vaddr, struct page *page); |
f5e706ad | 49 | #define copy_page(X,Y) memcpy((void *)(X), (void *)(Y), PAGE_SIZE) |
f05a6865 | 50 | void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *topage); |
f5e706ad SR |
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.. */ | |
63 | typedef struct { unsigned long pte; } pte_t; | |
64 | typedef struct { unsigned long iopte; } iopte_t; | |
2b77933c | 65 | typedef struct { unsigned long pmd; } pmd_t; |
ac55c768 | 66 | typedef struct { unsigned long pud; } pud_t; |
2b77933c | 67 | typedef struct { unsigned long pgd; } pgd_t; |
f5e706ad SR |
68 | typedef struct { unsigned long pgprot; } pgprot_t; |
69 | ||
70 | #define pte_val(x) ((x).pte) | |
71 | #define iopte_val(x) ((x).iopte) | |
72 | #define pmd_val(x) ((x).pmd) | |
ac55c768 | 73 | #define pud_val(x) ((x).pud) |
f5e706ad SR |
74 | #define pgd_val(x) ((x).pgd) |
75 | #define pgprot_val(x) ((x).pgprot) | |
76 | ||
77 | #define __pte(x) ((pte_t) { (x) } ) | |
78 | #define __iopte(x) ((iopte_t) { (x) } ) | |
79 | #define __pmd(x) ((pmd_t) { (x) } ) | |
ac55c768 | 80 | #define __pud(x) ((pud_t) { (x) } ) |
f5e706ad SR |
81 | #define __pgd(x) ((pgd_t) { (x) } ) |
82 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
83 | ||
84 | #else | |
85 | /* .. while these make it easier on the compiler */ | |
86 | typedef unsigned long pte_t; | |
87 | typedef unsigned long iopte_t; | |
2b77933c | 88 | typedef unsigned long pmd_t; |
ac55c768 | 89 | typedef unsigned long pud_t; |
2b77933c | 90 | typedef unsigned long pgd_t; |
f5e706ad SR |
91 | typedef unsigned long pgprot_t; |
92 | ||
93 | #define pte_val(x) (x) | |
94 | #define iopte_val(x) (x) | |
95 | #define pmd_val(x) (x) | |
ac55c768 | 96 | #define pud_val(x) (x) |
f5e706ad SR |
97 | #define pgd_val(x) (x) |
98 | #define pgprot_val(x) (x) | |
99 | ||
100 | #define __pte(x) (x) | |
101 | #define __iopte(x) (x) | |
102 | #define __pmd(x) (x) | |
ac55c768 | 103 | #define __pud(x) (x) |
f5e706ad SR |
104 | #define __pgd(x) (x) |
105 | #define __pgprot(x) (x) | |
106 | ||
107 | #endif /* (STRICT_MM_TYPECHECKS) */ | |
108 | ||
c460bec7 | 109 | typedef pte_t *pgtable_t; |
f5e706ad | 110 | |
4397bed0 DM |
111 | extern unsigned long sparc64_va_hole_top; |
112 | extern unsigned long sparc64_va_hole_bottom; | |
c920745e | 113 | |
2b77933c DM |
114 | /* The next two defines specify the actual exclusion region we |
115 | * enforce, wherein we use a 4GB red zone on each side of the VA hole. | |
116 | */ | |
4397bed0 DM |
117 | #define VA_EXCLUDE_START (sparc64_va_hole_bottom - (1UL << 32UL)) |
118 | #define VA_EXCLUDE_END (sparc64_va_hole_top + (1UL << 32UL)) | |
c920745e | 119 | |
f5e706ad | 120 | #define TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \ |
c920745e DM |
121 | _AC(0x0000000070000000,UL) : \ |
122 | VA_EXCLUDE_END) | |
f5e706ad SR |
123 | |
124 | #include <asm-generic/memory_model.h> | |
125 | ||
b2d43834 | 126 | extern unsigned long PAGE_OFFSET; |
f5e706ad | 127 | |
b2d43834 | 128 | #endif /* !(__ASSEMBLY__) */ |
bb7b4353 | 129 | |
7c0fa0f2 DM |
130 | /* The maximum number of physical memory address bits we support. The |
131 | * largest value we can support is whatever "KPGD_SHIFT + KPTE_BITS" | |
132 | * evaluates to. | |
bb7b4353 | 133 | */ |
7c0fa0f2 | 134 | #define MAX_PHYS_ADDRESS_BITS 53 |
bb7b4353 | 135 | |
bb7b4353 DM |
136 | #define ILOG2_4MB 22 |
137 | #define ILOG2_256MB 28 | |
138 | ||
f5e706ad SR |
139 | #ifndef __ASSEMBLY__ |
140 | ||
141 | #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET) | |
142 | #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) | |
143 | ||
144 | #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) | |
145 | ||
146 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr)>>PAGE_SHIFT) | |
147 | ||
148 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | |
149 | ||
150 | #define virt_to_phys __pa | |
151 | #define phys_to_virt __va | |
152 | ||
153 | #endif /* !(__ASSEMBLY__) */ | |
154 | ||
155 | #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ | |
156 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
157 | ||
5b17e1cd | 158 | #include <asm-generic/getorder.h> |
f5e706ad SR |
159 | |
160 | #endif /* _SPARC64_PAGE_H */ |