Commit | Line | Data |
---|---|---|
f5e706ad SR |
1 | #ifndef _SPARC64_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 | |
f5e706ad SR |
10 | #else |
11 | #error No page size specified in kernel configuration | |
12 | #endif | |
13 | ||
14 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) | |
15 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
16 | ||
17 | /* Flushing for D-cache alias handling is only needed if | |
18 | * the page size is smaller than 16K. | |
19 | */ | |
20 | #if PAGE_SHIFT < 14 | |
21 | #define DCACHE_ALIASING_POSSIBLE | |
22 | #endif | |
23 | ||
24 | #if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB) | |
25 | #define HPAGE_SHIFT 22 | |
26 | #elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K) | |
27 | #define HPAGE_SHIFT 19 | |
28 | #elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K) | |
29 | #define HPAGE_SHIFT 16 | |
30 | #endif | |
31 | ||
32 | #ifdef CONFIG_HUGETLB_PAGE | |
33 | #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) | |
34 | #define HPAGE_MASK (~(HPAGE_SIZE - 1UL)) | |
35 | #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) | |
36 | #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA | |
37 | #endif | |
38 | ||
39 | #ifndef __ASSEMBLY__ | |
40 | ||
41 | extern void _clear_page(void *page); | |
42 | #define clear_page(X) _clear_page((void *)(X)) | |
43 | struct page; | |
44 | extern void clear_user_page(void *addr, unsigned long vaddr, struct page *page); | |
45 | #define copy_page(X,Y) memcpy((void *)(X), (void *)(Y), PAGE_SIZE) | |
46 | extern void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *topage); | |
47 | ||
48 | /* Unlike sparc32, sparc64's parameter passing API is more | |
49 | * sane in that structures which as small enough are passed | |
50 | * in registers instead of on the stack. Thus, setting | |
51 | * STRICT_MM_TYPECHECKS does not generate worse code so | |
52 | * let's enable it to get the type checking. | |
53 | */ | |
54 | ||
55 | #define STRICT_MM_TYPECHECKS | |
56 | ||
57 | #ifdef STRICT_MM_TYPECHECKS | |
58 | /* These are used to make use of C type-checking.. */ | |
59 | typedef struct { unsigned long pte; } pte_t; | |
60 | typedef struct { unsigned long iopte; } iopte_t; | |
61 | typedef struct { unsigned int pmd; } pmd_t; | |
62 | typedef struct { unsigned int pgd; } pgd_t; | |
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) | |
68 | #define pgd_val(x) ((x).pgd) | |
69 | #define pgprot_val(x) ((x).pgprot) | |
70 | ||
71 | #define __pte(x) ((pte_t) { (x) } ) | |
72 | #define __iopte(x) ((iopte_t) { (x) } ) | |
73 | #define __pmd(x) ((pmd_t) { (x) } ) | |
74 | #define __pgd(x) ((pgd_t) { (x) } ) | |
75 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
76 | ||
77 | #else | |
78 | /* .. while these make it easier on the compiler */ | |
79 | typedef unsigned long pte_t; | |
80 | typedef unsigned long iopte_t; | |
81 | typedef unsigned int pmd_t; | |
82 | typedef unsigned int pgd_t; | |
83 | typedef unsigned long pgprot_t; | |
84 | ||
85 | #define pte_val(x) (x) | |
86 | #define iopte_val(x) (x) | |
87 | #define pmd_val(x) (x) | |
88 | #define pgd_val(x) (x) | |
89 | #define pgprot_val(x) (x) | |
90 | ||
91 | #define __pte(x) (x) | |
92 | #define __iopte(x) (x) | |
93 | #define __pmd(x) (x) | |
94 | #define __pgd(x) (x) | |
95 | #define __pgprot(x) (x) | |
96 | ||
97 | #endif /* (STRICT_MM_TYPECHECKS) */ | |
98 | ||
99 | typedef struct page *pgtable_t; | |
100 | ||
101 | #define TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \ | |
102 | (_AC(0x0000000070000000,UL)) : \ | |
103 | (_AC(0xfffff80000000000,UL) + (1UL << 32UL))) | |
104 | ||
105 | #include <asm-generic/memory_model.h> | |
106 | ||
107 | #endif /* !(__ASSEMBLY__) */ | |
108 | ||
f5e706ad SR |
109 | /* We used to stick this into a hard-coded global register (%g4) |
110 | * but that does not make sense anymore. | |
111 | */ | |
112 | #define PAGE_OFFSET _AC(0xFFFFF80000000000,UL) | |
113 | ||
114 | #ifndef __ASSEMBLY__ | |
115 | ||
116 | #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET) | |
117 | #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) | |
118 | ||
119 | #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) | |
120 | ||
121 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr)>>PAGE_SHIFT) | |
122 | ||
123 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | |
124 | ||
125 | #define virt_to_phys __pa | |
126 | #define phys_to_virt __va | |
127 | ||
128 | #endif /* !(__ASSEMBLY__) */ | |
129 | ||
130 | #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ | |
131 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
132 | ||
133 | #include <asm-generic/page.h> | |
134 | ||
135 | #endif /* _SPARC64_PAGE_H */ |