diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2008-09-16 13:48:51 -0400 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2008-10-11 11:18:52 -0400 |
commit | 384740dc49ea651ba350704d13ff6be9976e37fe (patch) | |
tree | a6e80cad287ccae7a86d81bfa692fc96889c88ed /include/asm-mips/pgtable.h | |
parent | e8c7c482347574ecdd45c43e32c332d5fc2ece61 (diff) |
MIPS: Move headfiles to new location below arch/mips/include
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips/pgtable.h')
-rw-r--r-- | include/asm-mips/pgtable.h | 383 |
1 files changed, 0 insertions, 383 deletions
diff --git a/include/asm-mips/pgtable.h b/include/asm-mips/pgtable.h deleted file mode 100644 index 6a0edf72ffbc..000000000000 --- a/include/asm-mips/pgtable.h +++ /dev/null | |||
@@ -1,383 +0,0 @@ | |||
1 | /* | ||
2 | * This file is subject to the terms and conditions of the GNU General Public | ||
3 | * License. See the file "COPYING" in the main directory of this archive | ||
4 | * for more details. | ||
5 | * | ||
6 | * Copyright (C) 2003 Ralf Baechle | ||
7 | */ | ||
8 | #ifndef _ASM_PGTABLE_H | ||
9 | #define _ASM_PGTABLE_H | ||
10 | |||
11 | #ifdef CONFIG_32BIT | ||
12 | #include <asm/pgtable-32.h> | ||
13 | #endif | ||
14 | #ifdef CONFIG_64BIT | ||
15 | #include <asm/pgtable-64.h> | ||
16 | #endif | ||
17 | |||
18 | #include <asm/io.h> | ||
19 | #include <asm/pgtable-bits.h> | ||
20 | |||
21 | struct mm_struct; | ||
22 | struct vm_area_struct; | ||
23 | |||
24 | #define PAGE_NONE __pgprot(_PAGE_PRESENT | _CACHE_CACHABLE_NONCOHERENT) | ||
25 | #define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \ | ||
26 | _page_cachable_default) | ||
27 | #define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_READ | \ | ||
28 | _page_cachable_default) | ||
29 | #define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_READ | \ | ||
30 | _page_cachable_default) | ||
31 | #define PAGE_KERNEL __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \ | ||
32 | _PAGE_GLOBAL | _page_cachable_default) | ||
33 | #define PAGE_USERIO __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \ | ||
34 | _page_cachable_default) | ||
35 | #define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE | \ | ||
36 | __WRITEABLE | _PAGE_GLOBAL | _CACHE_UNCACHED) | ||
37 | |||
38 | /* | ||
39 | * MIPS can't do page protection for execute, and considers that the same like | ||
40 | * read. Also, write permissions imply read permissions. This is the closest | ||
41 | * we can get by reasonable means.. | ||
42 | */ | ||
43 | |||
44 | /* | ||
45 | * Dummy values to fill the table in mmap.c | ||
46 | * The real values will be generated at runtime | ||
47 | */ | ||
48 | #define __P000 __pgprot(0) | ||
49 | #define __P001 __pgprot(0) | ||
50 | #define __P010 __pgprot(0) | ||
51 | #define __P011 __pgprot(0) | ||
52 | #define __P100 __pgprot(0) | ||
53 | #define __P101 __pgprot(0) | ||
54 | #define __P110 __pgprot(0) | ||
55 | #define __P111 __pgprot(0) | ||
56 | |||
57 | #define __S000 __pgprot(0) | ||
58 | #define __S001 __pgprot(0) | ||
59 | #define __S010 __pgprot(0) | ||
60 | #define __S011 __pgprot(0) | ||
61 | #define __S100 __pgprot(0) | ||
62 | #define __S101 __pgprot(0) | ||
63 | #define __S110 __pgprot(0) | ||
64 | #define __S111 __pgprot(0) | ||
65 | |||
66 | extern unsigned long _page_cachable_default; | ||
67 | |||
68 | /* | ||
69 | * ZERO_PAGE is a global shared page that is always zero; used | ||
70 | * for zero-mapped memory areas etc.. | ||
71 | */ | ||
72 | |||
73 | extern unsigned long empty_zero_page; | ||
74 | extern unsigned long zero_page_mask; | ||
75 | |||
76 | #define ZERO_PAGE(vaddr) \ | ||
77 | (virt_to_page((void *)(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask)))) | ||
78 | |||
79 | extern void paging_init(void); | ||
80 | |||
81 | /* | ||
82 | * Conversion functions: convert a page and protection to a page entry, | ||
83 | * and a page entry and page directory to the page they refer to. | ||
84 | */ | ||
85 | #define pmd_phys(pmd) virt_to_phys((void *)pmd_val(pmd)) | ||
86 | #define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT)) | ||
87 | #define pmd_page_vaddr(pmd) pmd_val(pmd) | ||
88 | |||
89 | #if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) | ||
90 | |||
91 | #define pte_none(pte) (!(((pte).pte_low | (pte).pte_high) & ~_PAGE_GLOBAL)) | ||
92 | #define pte_present(pte) ((pte).pte_low & _PAGE_PRESENT) | ||
93 | |||
94 | static inline void set_pte(pte_t *ptep, pte_t pte) | ||
95 | { | ||
96 | ptep->pte_high = pte.pte_high; | ||
97 | smp_wmb(); | ||
98 | ptep->pte_low = pte.pte_low; | ||
99 | //printk("pte_high %x pte_low %x\n", ptep->pte_high, ptep->pte_low); | ||
100 | |||
101 | if (pte.pte_low & _PAGE_GLOBAL) { | ||
102 | pte_t *buddy = ptep_buddy(ptep); | ||
103 | /* | ||
104 | * Make sure the buddy is global too (if it's !none, | ||
105 | * it better already be global) | ||
106 | */ | ||
107 | if (pte_none(*buddy)) { | ||
108 | buddy->pte_low |= _PAGE_GLOBAL; | ||
109 | buddy->pte_high |= _PAGE_GLOBAL; | ||
110 | } | ||
111 | } | ||
112 | } | ||
113 | #define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval) | ||
114 | |||
115 | static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) | ||
116 | { | ||
117 | pte_t null = __pte(0); | ||
118 | |||
119 | /* Preserve global status for the pair */ | ||
120 | if (ptep_buddy(ptep)->pte_low & _PAGE_GLOBAL) | ||
121 | null.pte_low = null.pte_high = _PAGE_GLOBAL; | ||
122 | |||
123 | set_pte_at(mm, addr, ptep, null); | ||
124 | } | ||
125 | #else | ||
126 | |||
127 | #define pte_none(pte) (!(pte_val(pte) & ~_PAGE_GLOBAL)) | ||
128 | #define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT) | ||
129 | |||
130 | /* | ||
131 | * Certain architectures need to do special things when pte's | ||
132 | * within a page table are directly modified. Thus, the following | ||
133 | * hook is made available. | ||
134 | */ | ||
135 | static inline void set_pte(pte_t *ptep, pte_t pteval) | ||
136 | { | ||
137 | *ptep = pteval; | ||
138 | #if !defined(CONFIG_CPU_R3000) && !defined(CONFIG_CPU_TX39XX) | ||
139 | if (pte_val(pteval) & _PAGE_GLOBAL) { | ||
140 | pte_t *buddy = ptep_buddy(ptep); | ||
141 | /* | ||
142 | * Make sure the buddy is global too (if it's !none, | ||
143 | * it better already be global) | ||
144 | */ | ||
145 | if (pte_none(*buddy)) | ||
146 | pte_val(*buddy) = pte_val(*buddy) | _PAGE_GLOBAL; | ||
147 | } | ||
148 | #endif | ||
149 | } | ||
150 | #define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval) | ||
151 | |||
152 | static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) | ||
153 | { | ||
154 | #if !defined(CONFIG_CPU_R3000) && !defined(CONFIG_CPU_TX39XX) | ||
155 | /* Preserve global status for the pair */ | ||
156 | if (pte_val(*ptep_buddy(ptep)) & _PAGE_GLOBAL) | ||
157 | set_pte_at(mm, addr, ptep, __pte(_PAGE_GLOBAL)); | ||
158 | else | ||
159 | #endif | ||
160 | set_pte_at(mm, addr, ptep, __pte(0)); | ||
161 | } | ||
162 | #endif | ||
163 | |||
164 | /* | ||
165 | * (pmds are folded into puds so this doesn't get actually called, | ||
166 | * but the define is needed for a generic inline function.) | ||
167 | */ | ||
168 | #define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while(0) | ||
169 | |||
170 | #ifdef CONFIG_64BIT | ||
171 | /* | ||
172 | * (puds are folded into pgds so this doesn't get actually called, | ||
173 | * but the define is needed for a generic inline function.) | ||
174 | */ | ||
175 | #define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0) | ||
176 | #endif | ||
177 | |||
178 | #define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1) | ||
179 | #define PMD_T_LOG2 (__builtin_ffs(sizeof(pmd_t)) - 1) | ||
180 | #define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1) | ||
181 | |||
182 | /* | ||
183 | * We used to declare this array with size but gcc 3.3 and older are not able | ||
184 | * to find that this expression is a constant, so the size is dropped. | ||
185 | */ | ||
186 | extern pgd_t swapper_pg_dir[]; | ||
187 | |||
188 | /* | ||
189 | * The following only work if pte_present() is true. | ||
190 | * Undefined behaviour if not.. | ||
191 | */ | ||
192 | #if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) | ||
193 | static inline int pte_write(pte_t pte) { return pte.pte_low & _PAGE_WRITE; } | ||
194 | static inline int pte_dirty(pte_t pte) { return pte.pte_low & _PAGE_MODIFIED; } | ||
195 | static inline int pte_young(pte_t pte) { return pte.pte_low & _PAGE_ACCESSED; } | ||
196 | static inline int pte_file(pte_t pte) { return pte.pte_low & _PAGE_FILE; } | ||
197 | |||
198 | static inline pte_t pte_wrprotect(pte_t pte) | ||
199 | { | ||
200 | pte.pte_low &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE); | ||
201 | pte.pte_high &= ~_PAGE_SILENT_WRITE; | ||
202 | return pte; | ||
203 | } | ||
204 | |||
205 | static inline pte_t pte_mkclean(pte_t pte) | ||
206 | { | ||
207 | pte.pte_low &= ~(_PAGE_MODIFIED | _PAGE_SILENT_WRITE); | ||
208 | pte.pte_high &= ~_PAGE_SILENT_WRITE; | ||
209 | return pte; | ||
210 | } | ||
211 | |||
212 | static inline pte_t pte_mkold(pte_t pte) | ||
213 | { | ||
214 | pte.pte_low &= ~(_PAGE_ACCESSED | _PAGE_SILENT_READ); | ||
215 | pte.pte_high &= ~_PAGE_SILENT_READ; | ||
216 | return pte; | ||
217 | } | ||
218 | |||
219 | static inline pte_t pte_mkwrite(pte_t pte) | ||
220 | { | ||
221 | pte.pte_low |= _PAGE_WRITE; | ||
222 | if (pte.pte_low & _PAGE_MODIFIED) { | ||
223 | pte.pte_low |= _PAGE_SILENT_WRITE; | ||
224 | pte.pte_high |= _PAGE_SILENT_WRITE; | ||
225 | } | ||
226 | return pte; | ||
227 | } | ||
228 | |||
229 | static inline pte_t pte_mkdirty(pte_t pte) | ||
230 | { | ||
231 | pte.pte_low |= _PAGE_MODIFIED; | ||
232 | if (pte.pte_low & _PAGE_WRITE) { | ||
233 | pte.pte_low |= _PAGE_SILENT_WRITE; | ||
234 | pte.pte_high |= _PAGE_SILENT_WRITE; | ||
235 | } | ||
236 | return pte; | ||
237 | } | ||
238 | |||
239 | static inline pte_t pte_mkyoung(pte_t pte) | ||
240 | { | ||
241 | pte.pte_low |= _PAGE_ACCESSED; | ||
242 | if (pte.pte_low & _PAGE_READ) { | ||
243 | pte.pte_low |= _PAGE_SILENT_READ; | ||
244 | pte.pte_high |= _PAGE_SILENT_READ; | ||
245 | } | ||
246 | return pte; | ||
247 | } | ||
248 | #else | ||
249 | static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; } | ||
250 | static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_MODIFIED; } | ||
251 | static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; } | ||
252 | static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; } | ||
253 | |||
254 | static inline pte_t pte_wrprotect(pte_t pte) | ||
255 | { | ||
256 | pte_val(pte) &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE); | ||
257 | return pte; | ||
258 | } | ||
259 | |||
260 | static inline pte_t pte_mkclean(pte_t pte) | ||
261 | { | ||
262 | pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE); | ||
263 | return pte; | ||
264 | } | ||
265 | |||
266 | static inline pte_t pte_mkold(pte_t pte) | ||
267 | { | ||
268 | pte_val(pte) &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ); | ||
269 | return pte; | ||
270 | } | ||
271 | |||
272 | static inline pte_t pte_mkwrite(pte_t pte) | ||
273 | { | ||
274 | pte_val(pte) |= _PAGE_WRITE; | ||
275 | if (pte_val(pte) & _PAGE_MODIFIED) | ||
276 | pte_val(pte) |= _PAGE_SILENT_WRITE; | ||
277 | return pte; | ||
278 | } | ||
279 | |||
280 | static inline pte_t pte_mkdirty(pte_t pte) | ||
281 | { | ||
282 | pte_val(pte) |= _PAGE_MODIFIED; | ||
283 | if (pte_val(pte) & _PAGE_WRITE) | ||
284 | pte_val(pte) |= _PAGE_SILENT_WRITE; | ||
285 | return pte; | ||
286 | } | ||
287 | |||
288 | static inline pte_t pte_mkyoung(pte_t pte) | ||
289 | { | ||
290 | pte_val(pte) |= _PAGE_ACCESSED; | ||
291 | if (pte_val(pte) & _PAGE_READ) | ||
292 | pte_val(pte) |= _PAGE_SILENT_READ; | ||
293 | return pte; | ||
294 | } | ||
295 | #endif | ||
296 | static inline int pte_special(pte_t pte) { return 0; } | ||
297 | static inline pte_t pte_mkspecial(pte_t pte) { return pte; } | ||
298 | |||
299 | /* | ||
300 | * Macro to make mark a page protection value as "uncacheable". Note | ||
301 | * that "protection" is really a misnomer here as the protection value | ||
302 | * contains the memory attribute bits, dirty bits, and various other | ||
303 | * bits as well. | ||
304 | */ | ||
305 | #define pgprot_noncached pgprot_noncached | ||
306 | |||
307 | static inline pgprot_t pgprot_noncached(pgprot_t _prot) | ||
308 | { | ||
309 | unsigned long prot = pgprot_val(_prot); | ||
310 | |||
311 | prot = (prot & ~_CACHE_MASK) | _CACHE_UNCACHED; | ||
312 | |||
313 | return __pgprot(prot); | ||
314 | } | ||
315 | |||
316 | /* | ||
317 | * Conversion functions: convert a page and protection to a page entry, | ||
318 | * and a page entry and page directory to the page they refer to. | ||
319 | */ | ||
320 | #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) | ||
321 | |||
322 | #if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) | ||
323 | static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) | ||
324 | { | ||
325 | pte.pte_low &= _PAGE_CHG_MASK; | ||
326 | pte.pte_high &= ~0x3f; | ||
327 | pte.pte_low |= pgprot_val(newprot); | ||
328 | pte.pte_high |= pgprot_val(newprot) & 0x3f; | ||
329 | return pte; | ||
330 | } | ||
331 | #else | ||
332 | static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) | ||
333 | { | ||
334 | return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot)); | ||
335 | } | ||
336 | #endif | ||
337 | |||
338 | |||
339 | extern void __update_tlb(struct vm_area_struct *vma, unsigned long address, | ||
340 | pte_t pte); | ||
341 | extern void __update_cache(struct vm_area_struct *vma, unsigned long address, | ||
342 | pte_t pte); | ||
343 | |||
344 | static inline void update_mmu_cache(struct vm_area_struct *vma, | ||
345 | unsigned long address, pte_t pte) | ||
346 | { | ||
347 | __update_tlb(vma, address, pte); | ||
348 | __update_cache(vma, address, pte); | ||
349 | } | ||
350 | |||
351 | #define kern_addr_valid(addr) (1) | ||
352 | |||
353 | #ifdef CONFIG_64BIT_PHYS_ADDR | ||
354 | extern int remap_pfn_range(struct vm_area_struct *vma, unsigned long from, unsigned long pfn, unsigned long size, pgprot_t prot); | ||
355 | |||
356 | static inline int io_remap_pfn_range(struct vm_area_struct *vma, | ||
357 | unsigned long vaddr, | ||
358 | unsigned long pfn, | ||
359 | unsigned long size, | ||
360 | pgprot_t prot) | ||
361 | { | ||
362 | phys_t phys_addr_high = fixup_bigphys_addr(pfn << PAGE_SHIFT, size); | ||
363 | return remap_pfn_range(vma, vaddr, phys_addr_high >> PAGE_SHIFT, size, prot); | ||
364 | } | ||
365 | #else | ||
366 | #define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ | ||
367 | remap_pfn_range(vma, vaddr, pfn, size, prot) | ||
368 | #endif | ||
369 | |||
370 | #include <asm-generic/pgtable.h> | ||
371 | |||
372 | /* | ||
373 | * We provide our own get_unmapped area to cope with the virtual aliasing | ||
374 | * constraints placed on us by the cache architecture. | ||
375 | */ | ||
376 | #define HAVE_ARCH_UNMAPPED_AREA | ||
377 | |||
378 | /* | ||
379 | * No page table caches to initialise | ||
380 | */ | ||
381 | #define pgtable_cache_init() do { } while (0) | ||
382 | |||
383 | #endif /* _ASM_PGTABLE_H */ | ||