1
2 #ifndef _ALPHA_PAGE_H
3 #define _ALPHA_PAGE_H
4
5 #include <linux/const.h>
6 #include <asm/pal.h>
7
8
9 #define PAGE_SHIFT 13
10 #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
11 #define PAGE_MASK (~(PAGE_SIZE-1))
12
13 #ifndef __ASSEMBLY__
14
15 #define STRICT_MM_TYPECHECKS
16
17 extern void clear_page(void *page);
18 #define clear_user_page(page, vaddr, pg) clear_page(page)
19
20 #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
21 alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vmaddr)
22 #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
23
24 extern void copy_page(void * _to, void * _from);
25 #define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
26
27 #ifdef STRICT_MM_TYPECHECKS
28
29
30
31 typedef struct { unsigned long pte; } pte_t;
32 typedef struct { unsigned long pmd; } pmd_t;
33 typedef struct { unsigned long pgd; } pgd_t;
34 typedef struct { unsigned long pgprot; } pgprot_t;
35
36 #define pte_val(x) ((x).pte)
37 #define pmd_val(x) ((x).pmd)
38 #define pgd_val(x) ((x).pgd)
39 #define pgprot_val(x) ((x).pgprot)
40
41 #define __pte(x) ((pte_t) { (x) } )
42 #define __pmd(x) ((pmd_t) { (x) } )
43 #define __pgd(x) ((pgd_t) { (x) } )
44 #define __pgprot(x) ((pgprot_t) { (x) } )
45
46 #else
47
48
49
50 typedef unsigned long pte_t;
51 typedef unsigned long pmd_t;
52 typedef unsigned long pgd_t;
53 typedef unsigned long pgprot_t;
54
55 #define pte_val(x) (x)
56 #define pmd_val(x) (x)
57 #define pgd_val(x) (x)
58 #define pgprot_val(x) (x)
59
60 #define __pte(x) (x)
61 #define __pgd(x) (x)
62 #define __pgprot(x) (x)
63
64 #endif
65
66 typedef struct page *pgtable_t;
67
68 #ifdef USE_48_BIT_KSEG
69 #define PAGE_OFFSET 0xffff800000000000UL
70 #else
71 #define PAGE_OFFSET 0xfffffc0000000000UL
72 #endif
73
74 #else
75
76 #ifdef USE_48_BIT_KSEG
77 #define PAGE_OFFSET 0xffff800000000000
78 #else
79 #define PAGE_OFFSET 0xfffffc0000000000
80 #endif
81
82 #endif
83
84 #define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)
85 #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
86 #ifndef CONFIG_DISCONTIGMEM
87 #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
88
89 #define pfn_valid(pfn) ((pfn) < max_mapnr)
90 #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
91 #endif
92
93 #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
94 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
95
96 #include <asm-generic/memory_model.h>
97 #include <asm-generic/getorder.h>
98
99 #endif