1
2#ifndef _SUN3_PGTABLE_H
3#define _SUN3_PGTABLE_H
4
5#include <asm/sun3mmu.h>
6
7#ifndef __ASSEMBLY__
8#include <asm/virtconvert.h>
9#include <linux/linkage.h>
10
11
12
13
14
15
16
17
18#define VTOP(addr) __pa(addr)
19#define PTOV(addr) __va(addr)
20
21
22#endif
23
24
25#define _PAGE_NOCACHE030 0x040
26#define _CACHEMASK040 (~0x060)
27#define _PAGE_NOCACHE_S 0x040
28
29
30#define SUN3_PAGE_VALID (0x80000000)
31#define SUN3_PAGE_WRITEABLE (0x40000000)
32#define SUN3_PAGE_SYSTEM (0x20000000)
33#define SUN3_PAGE_NOCACHE (0x10000000)
34#define SUN3_PAGE_ACCESSED (0x02000000)
35#define SUN3_PAGE_MODIFIED (0x01000000)
36
37
38
39#define _PAGE_PRESENT (SUN3_PAGE_VALID)
40#define _PAGE_ACCESSED (SUN3_PAGE_ACCESSED)
41
42
43
44
45#define PAGE_NONE __pgprot(SUN3_PAGE_VALID \
46 | SUN3_PAGE_ACCESSED \
47 | SUN3_PAGE_NOCACHE)
48#define PAGE_SHARED __pgprot(SUN3_PAGE_VALID \
49 | SUN3_PAGE_WRITEABLE \
50 | SUN3_PAGE_ACCESSED \
51 | SUN3_PAGE_NOCACHE)
52#define PAGE_COPY __pgprot(SUN3_PAGE_VALID \
53 | SUN3_PAGE_ACCESSED \
54 | SUN3_PAGE_NOCACHE)
55#define PAGE_READONLY __pgprot(SUN3_PAGE_VALID \
56 | SUN3_PAGE_ACCESSED \
57 | SUN3_PAGE_NOCACHE)
58#define PAGE_KERNEL __pgprot(SUN3_PAGE_VALID \
59 | SUN3_PAGE_WRITEABLE \
60 | SUN3_PAGE_SYSTEM \
61 | SUN3_PAGE_NOCACHE \
62 | SUN3_PAGE_ACCESSED \
63 | SUN3_PAGE_MODIFIED)
64#define PAGE_INIT __pgprot(SUN3_PAGE_VALID \
65 | SUN3_PAGE_WRITEABLE \
66 | SUN3_PAGE_SYSTEM \
67 | SUN3_PAGE_NOCACHE)
68
69
70
71
72
73
74#define __P000 PAGE_NONE
75#define __P001 PAGE_READONLY
76#define __P010 PAGE_COPY
77#define __P011 PAGE_COPY
78#define __P100 PAGE_READONLY
79#define __P101 PAGE_READONLY
80#define __P110 PAGE_COPY
81#define __P111 PAGE_COPY
82
83#define __S000 PAGE_NONE
84#define __S001 PAGE_READONLY
85#define __S010 PAGE_SHARED
86#define __S011 PAGE_SHARED
87#define __S100 PAGE_READONLY
88#define __S101 PAGE_READONLY
89#define __S110 PAGE_SHARED
90#define __S111 PAGE_SHARED
91
92
93#define SUN3_PMD_VALID (0x00000001)
94#define SUN3_PMD_MASK (0x0000003F)
95#define SUN3_PMD_MAGIC (0x0000002B)
96
97#ifndef __ASSEMBLY__
98
99
100
101
102
103#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
104
105static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
106{
107 pte_val(pte) = (pte_val(pte) & SUN3_PAGE_CHG_MASK) | pgprot_val(newprot);
108 return pte;
109}
110
111#define pmd_set(pmdp,ptep) do {} while (0)
112
113#define __pte_page(pte) \
114((unsigned long) __va ((pte_val (pte) & SUN3_PAGE_PGNUM_MASK) << PAGE_SHIFT))
115
116static inline unsigned long pmd_page_vaddr(pmd_t pmd)
117{
118 return (unsigned long)__va(pmd_val(pmd) & PAGE_MASK);
119}
120
121static inline int pte_none (pte_t pte) { return !pte_val (pte); }
122static inline int pte_present (pte_t pte) { return pte_val (pte) & SUN3_PAGE_VALID; }
123static inline void pte_clear (struct mm_struct *mm, unsigned long addr, pte_t *ptep)
124{
125 pte_val (*ptep) = 0;
126}
127
128#define pte_pfn(pte) (pte_val(pte) & SUN3_PAGE_PGNUM_MASK)
129#define pfn_pte(pfn, pgprot) \
130({ pte_t __pte; pte_val(__pte) = pfn | pgprot_val(pgprot); __pte; })
131
132#define pte_page(pte) virt_to_page(__pte_page(pte))
133#define pmd_page(pmd) virt_to_page(pmd_page_vaddr(pmd))
134
135
136static inline int pmd_none2 (pmd_t *pmd) { return !pmd_val (*pmd); }
137#define pmd_none(pmd) pmd_none2(&(pmd))
138
139static inline int pmd_bad2 (pmd_t *pmd) { return 0; }
140#define pmd_bad(pmd) pmd_bad2(&(pmd))
141static inline int pmd_present2 (pmd_t *pmd) { return pmd_val (*pmd) & SUN3_PMD_VALID; }
142
143#define pmd_present(pmd) (!pmd_none2(&(pmd)))
144static inline void pmd_clear (pmd_t *pmdp) { pmd_val (*pmdp) = 0; }
145
146
147#define pte_ERROR(e) \
148 pr_err("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
149#define pgd_ERROR(e) \
150 pr_err("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
151
152
153
154
155
156
157
158static inline int pte_write(pte_t pte) { return pte_val(pte) & SUN3_PAGE_WRITEABLE; }
159static inline int pte_dirty(pte_t pte) { return pte_val(pte) & SUN3_PAGE_MODIFIED; }
160static inline int pte_young(pte_t pte) { return pte_val(pte) & SUN3_PAGE_ACCESSED; }
161
162static inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) &= ~SUN3_PAGE_WRITEABLE; return pte; }
163static inline pte_t pte_mkclean(pte_t pte) { pte_val(pte) &= ~SUN3_PAGE_MODIFIED; return pte; }
164static inline pte_t pte_mkold(pte_t pte) { pte_val(pte) &= ~SUN3_PAGE_ACCESSED; return pte; }
165static inline pte_t pte_mkwrite(pte_t pte) { pte_val(pte) |= SUN3_PAGE_WRITEABLE; return pte; }
166static inline pte_t pte_mkdirty(pte_t pte) { pte_val(pte) |= SUN3_PAGE_MODIFIED; return pte; }
167static inline pte_t pte_mkyoung(pte_t pte) { pte_val(pte) |= SUN3_PAGE_ACCESSED; return pte; }
168static inline pte_t pte_mknocache(pte_t pte) { pte_val(pte) |= SUN3_PAGE_NOCACHE; return pte; }
169
170
171
172static inline pte_t pte_mkcache(pte_t pte) { return pte; }
173
174extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
175extern pgd_t kernel_pg_dir[PTRS_PER_PGD];
176
177
178#define __swp_type(x) ((x).val & 0x7F)
179#define __swp_offset(x) (((x).val) >> 7)
180#define __swp_entry(type,offset) ((swp_entry_t) { ((type) | ((offset) << 7)) })
181#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
182#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
183
184#endif
185#endif
186