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8#ifndef _ASM_PAGE_H
9#define _ASM_PAGE_H
10
11#include <linux/const.h>
12
13
14
15#ifdef CONFIG_PAGE_SIZE_4KB
16#define PAGE_SHIFT 12
17#define HEXAGON_L1_PTE_SIZE __HVM_PDE_S_4KB
18#endif
19
20#ifdef CONFIG_PAGE_SIZE_16KB
21#define PAGE_SHIFT 14
22#define HEXAGON_L1_PTE_SIZE __HVM_PDE_S_16KB
23#endif
24
25#ifdef CONFIG_PAGE_SIZE_64KB
26#define PAGE_SHIFT 16
27#define HEXAGON_L1_PTE_SIZE __HVM_PDE_S_64KB
28#endif
29
30#ifdef CONFIG_PAGE_SIZE_256KB
31#define PAGE_SHIFT 18
32#define HEXAGON_L1_PTE_SIZE __HVM_PDE_S_256KB
33#endif
34
35#ifdef CONFIG_PAGE_SIZE_1MB
36#define PAGE_SHIFT 20
37#define HEXAGON_L1_PTE_SIZE __HVM_PDE_S_1MB
38#endif
39
40
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43
44
45#ifdef CONFIG_HUGETLB_PAGE
46#define HPAGE_SHIFT 22
47#define HPAGE_SIZE (1UL << HPAGE_SHIFT)
48#define HPAGE_MASK (~(HPAGE_SIZE-1))
49#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT-PAGE_SHIFT)
50#define HVM_HUGEPAGE_SIZE 0x5
51#endif
52
53#define PAGE_SIZE (1UL << PAGE_SHIFT)
54#define PAGE_MASK (~((1 << PAGE_SHIFT) - 1))
55
56#ifdef __KERNEL__
57#ifndef __ASSEMBLY__
58
59
60
61
62#include <linux/pfn.h>
63
64
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66
67
68
69typedef struct { unsigned long pte; } pte_t;
70typedef struct { unsigned long pgd; } pgd_t;
71typedef struct { unsigned long pgprot; } pgprot_t;
72typedef struct page *pgtable_t;
73
74#define pte_val(x) ((x).pte)
75#define pgd_val(x) ((x).pgd)
76#define pgprot_val(x) ((x).pgprot)
77#define __pte(x) ((pte_t) { (x) })
78#define __pgd(x) ((pgd_t) { (x) })
79#define __pgprot(x) ((pgprot_t) { (x) })
80
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83
84
85
86#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET + PHYS_OFFSET)
87#define __va(x) ((void *)((unsigned long)(x) - PHYS_OFFSET + PAGE_OFFSET))
88
89
90struct page;
91
92
93#define virt_to_page(kaddr) pfn_to_page(PFN_DOWN(__pa(kaddr)))
94
95
96#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
97 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
98
99#define pfn_valid(pfn) ((pfn) < max_mapnr)
100#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
101
102
103static inline void clear_page(void *page)
104{
105
106 asm volatile(
107 " loop0(1f,%1);\n"
108 "1: { dczeroa(%0);\n"
109 " %0 = add(%0,#32); }:endloop0\n"
110 : "+r" (page)
111 : "r" (PAGE_SIZE/32)
112 : "lc0", "sa0", "memory"
113 );
114}
115
116#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
117
118
119
120
121#define clear_user_page(page, vaddr, pg) clear_page(page)
122#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
123
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126
127
128#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
129
130#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
131#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
132
133#define page_to_virt(page) __va(page_to_phys(page))
134
135
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138
139
140#define kern_addr_valid(addr) (1)
141
142#include <asm/mem-layout.h>
143#include <asm-generic/memory_model.h>
144
145#include <asm-generic/getorder.h>
146
147#endif
148#endif
149
150#endif
151