diff options
Diffstat (limited to 'include/asm-sparc/page.h')
-rw-r--r-- | include/asm-sparc/page.h | 165 |
1 files changed, 5 insertions, 160 deletions
diff --git a/include/asm-sparc/page.h b/include/asm-sparc/page.h index 14de518cc38..f32f49fcf75 100644 --- a/include/asm-sparc/page.h +++ b/include/asm-sparc/page.h | |||
@@ -1,163 +1,8 @@ | |||
1 | /* | 1 | #ifndef ___ASM_SPARC_PAGE_H |
2 | * page.h: Various defines and such for MMU operations on the Sparc for | 2 | #define ___ASM_SPARC_PAGE_H |
3 | * the Linux kernel. | 3 | #if defined(__sparc__) && defined(__arch64__) |
4 | * | 4 | #include <asm-sparc/page_64.h> |
5 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) | ||
6 | */ | ||
7 | |||
8 | #ifndef _SPARC_PAGE_H | ||
9 | #define _SPARC_PAGE_H | ||
10 | |||
11 | #ifdef CONFIG_SUN4 | ||
12 | #define PAGE_SHIFT 13 | ||
13 | #else | 5 | #else |
14 | #define PAGE_SHIFT 12 | 6 | #include <asm-sparc/page_32.h> |
15 | #endif | 7 | #endif |
16 | #ifndef __ASSEMBLY__ | ||
17 | /* I have my suspicions... -DaveM */ | ||
18 | #define PAGE_SIZE (1UL << PAGE_SHIFT) | ||
19 | #else | ||
20 | #define PAGE_SIZE (1 << PAGE_SHIFT) | ||
21 | #endif | ||
22 | #define PAGE_MASK (~(PAGE_SIZE-1)) | ||
23 | |||
24 | #include <asm/btfixup.h> | ||
25 | |||
26 | #ifndef __ASSEMBLY__ | ||
27 | |||
28 | #define clear_page(page) memset((void *)(page), 0, PAGE_SIZE) | ||
29 | #define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE) | ||
30 | #define clear_user_page(addr, vaddr, page) \ | ||
31 | do { clear_page(addr); \ | ||
32 | sparc_flush_page_to_ram(page); \ | ||
33 | } while (0) | ||
34 | #define copy_user_page(to, from, vaddr, page) \ | ||
35 | do { copy_page(to, from); \ | ||
36 | sparc_flush_page_to_ram(page); \ | ||
37 | } while (0) | ||
38 | |||
39 | /* The following structure is used to hold the physical | ||
40 | * memory configuration of the machine. This is filled in | ||
41 | * prom_meminit() and is later used by mem_init() to set up | ||
42 | * mem_map[]. We statically allocate SPARC_PHYS_BANKS+1 of | ||
43 | * these structs, this is arbitrary. The entry after the | ||
44 | * last valid one has num_bytes==0. | ||
45 | */ | ||
46 | struct sparc_phys_banks { | ||
47 | unsigned long base_addr; | ||
48 | unsigned long num_bytes; | ||
49 | }; | ||
50 | |||
51 | #define SPARC_PHYS_BANKS 32 | ||
52 | |||
53 | extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS+1]; | ||
54 | |||
55 | /* Cache alias structure. Entry is valid if context != -1. */ | ||
56 | struct cache_palias { | ||
57 | unsigned long vaddr; | ||
58 | int context; | ||
59 | }; | ||
60 | |||
61 | /* passing structs on the Sparc slow us down tremendously... */ | ||
62 | |||
63 | /* #define STRICT_MM_TYPECHECKS */ | ||
64 | |||
65 | #ifdef STRICT_MM_TYPECHECKS | ||
66 | /* | ||
67 | * These are used to make use of C type-checking.. | ||
68 | */ | ||
69 | typedef struct { unsigned long pte; } pte_t; | ||
70 | typedef struct { unsigned long iopte; } iopte_t; | ||
71 | typedef struct { unsigned long pmdv[16]; } pmd_t; | ||
72 | typedef struct { unsigned long pgd; } pgd_t; | ||
73 | typedef struct { unsigned long ctxd; } ctxd_t; | ||
74 | typedef struct { unsigned long pgprot; } pgprot_t; | ||
75 | typedef struct { unsigned long iopgprot; } iopgprot_t; | ||
76 | |||
77 | #define pte_val(x) ((x).pte) | ||
78 | #define iopte_val(x) ((x).iopte) | ||
79 | #define pmd_val(x) ((x).pmdv[0]) | ||
80 | #define pgd_val(x) ((x).pgd) | ||
81 | #define ctxd_val(x) ((x).ctxd) | ||
82 | #define pgprot_val(x) ((x).pgprot) | ||
83 | #define iopgprot_val(x) ((x).iopgprot) | ||
84 | |||
85 | #define __pte(x) ((pte_t) { (x) } ) | ||
86 | #define __iopte(x) ((iopte_t) { (x) } ) | ||
87 | /* #define __pmd(x) ((pmd_t) { (x) } ) */ /* XXX procedure with loop */ | ||
88 | #define __pgd(x) ((pgd_t) { (x) } ) | ||
89 | #define __ctxd(x) ((ctxd_t) { (x) } ) | ||
90 | #define __pgprot(x) ((pgprot_t) { (x) } ) | ||
91 | #define __iopgprot(x) ((iopgprot_t) { (x) } ) | ||
92 | |||
93 | #else | ||
94 | /* | ||
95 | * .. while these make it easier on the compiler | ||
96 | */ | ||
97 | typedef unsigned long pte_t; | ||
98 | typedef unsigned long iopte_t; | ||
99 | typedef struct { unsigned long pmdv[16]; } pmd_t; | ||
100 | typedef unsigned long pgd_t; | ||
101 | typedef unsigned long ctxd_t; | ||
102 | typedef unsigned long pgprot_t; | ||
103 | typedef unsigned long iopgprot_t; | ||
104 | |||
105 | #define pte_val(x) (x) | ||
106 | #define iopte_val(x) (x) | ||
107 | #define pmd_val(x) ((x).pmdv[0]) | ||
108 | #define pgd_val(x) (x) | ||
109 | #define ctxd_val(x) (x) | ||
110 | #define pgprot_val(x) (x) | ||
111 | #define iopgprot_val(x) (x) | ||
112 | |||
113 | #define __pte(x) (x) | ||
114 | #define __iopte(x) (x) | ||
115 | /* #define __pmd(x) (x) */ /* XXX later */ | ||
116 | #define __pgd(x) (x) | ||
117 | #define __ctxd(x) (x) | ||
118 | #define __pgprot(x) (x) | ||
119 | #define __iopgprot(x) (x) | ||
120 | |||
121 | #endif | ||
122 | |||
123 | typedef struct page *pgtable_t; | ||
124 | |||
125 | extern unsigned long sparc_unmapped_base; | ||
126 | |||
127 | BTFIXUPDEF_SETHI(sparc_unmapped_base) | ||
128 | |||
129 | #define TASK_UNMAPPED_BASE BTFIXUP_SETHI(sparc_unmapped_base) | ||
130 | |||
131 | #else /* !(__ASSEMBLY__) */ | ||
132 | |||
133 | #define __pgprot(x) (x) | ||
134 | |||
135 | #endif /* !(__ASSEMBLY__) */ | ||
136 | |||
137 | /* to align the pointer to the (next) page boundary */ | ||
138 | #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) | ||
139 | |||
140 | #define PAGE_OFFSET 0xf0000000 | ||
141 | #ifndef __ASSEMBLY__ | ||
142 | extern unsigned long phys_base; | ||
143 | extern unsigned long pfn_base; | ||
144 | #endif | 8 | #endif |
145 | #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET + phys_base) | ||
146 | #define __va(x) ((void *)((unsigned long) (x) - phys_base + PAGE_OFFSET)) | ||
147 | |||
148 | #define virt_to_phys __pa | ||
149 | #define phys_to_virt __va | ||
150 | |||
151 | #define ARCH_PFN_OFFSET (pfn_base) | ||
152 | #define virt_to_page(kaddr) (mem_map + ((((unsigned long)(kaddr)-PAGE_OFFSET)>>PAGE_SHIFT))) | ||
153 | |||
154 | #define pfn_valid(pfn) (((pfn) >= (pfn_base)) && (((pfn)-(pfn_base)) < max_mapnr)) | ||
155 | #define virt_addr_valid(kaddr) ((((unsigned long)(kaddr)-PAGE_OFFSET)>>PAGE_SHIFT) < max_mapnr) | ||
156 | |||
157 | #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ | ||
158 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | ||
159 | |||
160 | #include <asm-generic/memory_model.h> | ||
161 | #include <asm-generic/page.h> | ||
162 | |||
163 | #endif /* _SPARC_PAGE_H */ | ||