1#ifndef __ASM_SH_PGTABLE_32_H
2#define __ASM_SH_PGTABLE_32_H
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43#define _PAGE_WT 0x001
44#define _PAGE_HW_SHARED 0x002
45#define _PAGE_DIRTY 0x004
46#define _PAGE_CACHABLE 0x008
47#define _PAGE_SZ0 0x010
48#define _PAGE_RW 0x020
49#define _PAGE_USER 0x040
50#define _PAGE_SZ1 0x080
51#define _PAGE_PRESENT 0x100
52#define _PAGE_PROTNONE 0x200
53#define _PAGE_ACCESSED 0x400
54#define _PAGE_FILE _PAGE_WT
55#define _PAGE_SPECIAL 0x800
56
57#define _PAGE_SZ_MASK (_PAGE_SZ0 | _PAGE_SZ1)
58#define _PAGE_PR_MASK (_PAGE_RW | _PAGE_USER)
59
60
61#define _PAGE_EXT_ESZ0 0x0010
62#define _PAGE_EXT_ESZ1 0x0020
63#define _PAGE_EXT_ESZ2 0x0040
64#define _PAGE_EXT_ESZ3 0x0080
65
66#define _PAGE_EXT_USER_EXEC 0x0100
67#define _PAGE_EXT_USER_WRITE 0x0200
68#define _PAGE_EXT_USER_READ 0x0400
69
70#define _PAGE_EXT_KERN_EXEC 0x0800
71#define _PAGE_EXT_KERN_WRITE 0x1000
72#define _PAGE_EXT_KERN_READ 0x2000
73
74
75#define _PAGE_EXT(x) ((unsigned long long)(x) << 32)
76
77
78#define _PAGE_PCC_AREA5 0x00000000
79#define _PAGE_PCC_AREA6 0x80000000
80
81
82#define _PAGE_PCC_IODYN 0x00000001
83#define _PAGE_PCC_IO8 0x20000000
84#define _PAGE_PCC_IO16 0x20000001
85#define _PAGE_PCC_COM8 0x40000000
86#define _PAGE_PCC_COM16 0x40000001
87#define _PAGE_PCC_ATR8 0x60000000
88#define _PAGE_PCC_ATR16 0x60000001
89
90#ifndef CONFIG_X2TLB
91
92static inline unsigned long copy_ptea_attributes(unsigned long x)
93{
94 return ((x >> 28) & 0xe) | (x & 0x1);
95}
96#endif
97
98
99#if defined(CONFIG_CPU_SH3)
100#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED| \
101 _PAGE_FILE | _PAGE_SZ1 | \
102 _PAGE_HW_SHARED)
103#elif defined(CONFIG_X2TLB)
104
105#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED | \
106 _PAGE_FILE | _PAGE_PR_MASK | _PAGE_SZ_MASK)
107#else
108#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED | _PAGE_FILE)
109#endif
110
111#define _PAGE_FLAGS_HARDWARE_MASK (PHYS_ADDR_MASK & ~(_PAGE_CLEAR_FLAGS))
112
113
114#if !defined(CONFIG_MMU)
115# define _PAGE_FLAGS_HARD 0ULL
116#elif defined(CONFIG_X2TLB)
117# if defined(CONFIG_PAGE_SIZE_4KB)
118# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ0)
119# elif defined(CONFIG_PAGE_SIZE_8KB)
120# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ1)
121# elif defined(CONFIG_PAGE_SIZE_64KB)
122# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ2)
123# endif
124#else
125# if defined(CONFIG_PAGE_SIZE_4KB)
126# define _PAGE_FLAGS_HARD _PAGE_SZ0
127# elif defined(CONFIG_PAGE_SIZE_64KB)
128# define _PAGE_FLAGS_HARD _PAGE_SZ1
129# endif
130#endif
131
132#if defined(CONFIG_X2TLB)
133# if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
134# define _PAGE_SZHUGE (_PAGE_EXT_ESZ2)
135# elif defined(CONFIG_HUGETLB_PAGE_SIZE_256K)
136# define _PAGE_SZHUGE (_PAGE_EXT_ESZ0 | _PAGE_EXT_ESZ2)
137# elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
138# define _PAGE_SZHUGE (_PAGE_EXT_ESZ0 | _PAGE_EXT_ESZ1 | _PAGE_EXT_ESZ2)
139# elif defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
140# define _PAGE_SZHUGE (_PAGE_EXT_ESZ3)
141# elif defined(CONFIG_HUGETLB_PAGE_SIZE_64MB)
142# define _PAGE_SZHUGE (_PAGE_EXT_ESZ2 | _PAGE_EXT_ESZ3)
143# endif
144#else
145# if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
146# define _PAGE_SZHUGE (_PAGE_SZ1)
147# elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
148# define _PAGE_SZHUGE (_PAGE_SZ0 | _PAGE_SZ1)
149# endif
150#endif
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154
155
156#ifndef _PAGE_SZHUGE
157# define _PAGE_SZHUGE (_PAGE_FLAGS_HARD)
158#endif
159
160
161
162
163#define _PAGE_CHG_MASK \
164 (PTE_MASK | _PAGE_ACCESSED | _PAGE_CACHABLE | \
165 _PAGE_DIRTY | _PAGE_SPECIAL)
166
167#ifndef __ASSEMBLY__
168
169#if defined(CONFIG_X2TLB)
170#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_CACHABLE | \
171 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
172
173#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
174 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
175 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
176 _PAGE_EXT_KERN_WRITE | \
177 _PAGE_EXT_USER_READ | \
178 _PAGE_EXT_USER_WRITE))
179
180#define PAGE_EXECREAD __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
181 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
182 _PAGE_EXT(_PAGE_EXT_KERN_EXEC | \
183 _PAGE_EXT_KERN_READ | \
184 _PAGE_EXT_USER_EXEC | \
185 _PAGE_EXT_USER_READ))
186
187#define PAGE_COPY PAGE_EXECREAD
188
189#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
190 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
191 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
192 _PAGE_EXT_USER_READ))
193
194#define PAGE_WRITEONLY __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
195 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
196 _PAGE_EXT(_PAGE_EXT_KERN_WRITE | \
197 _PAGE_EXT_USER_WRITE))
198
199#define PAGE_RWX __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
200 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
201 _PAGE_EXT(_PAGE_EXT_KERN_WRITE | \
202 _PAGE_EXT_KERN_READ | \
203 _PAGE_EXT_KERN_EXEC | \
204 _PAGE_EXT_USER_WRITE | \
205 _PAGE_EXT_USER_READ | \
206 _PAGE_EXT_USER_EXEC))
207
208#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
209 _PAGE_DIRTY | _PAGE_ACCESSED | \
210 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD | \
211 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
212 _PAGE_EXT_KERN_WRITE | \
213 _PAGE_EXT_KERN_EXEC))
214
215#define PAGE_KERNEL_NOCACHE \
216 __pgprot(_PAGE_PRESENT | _PAGE_DIRTY | \
217 _PAGE_ACCESSED | _PAGE_HW_SHARED | \
218 _PAGE_FLAGS_HARD | \
219 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
220 _PAGE_EXT_KERN_WRITE | \
221 _PAGE_EXT_KERN_EXEC))
222
223#define PAGE_KERNEL_RO __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
224 _PAGE_DIRTY | _PAGE_ACCESSED | \
225 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD | \
226 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
227 _PAGE_EXT_KERN_EXEC))
228
229#define PAGE_KERNEL_PCC(slot, type) \
230 __pgprot(_PAGE_PRESENT | _PAGE_DIRTY | \
231 _PAGE_ACCESSED | _PAGE_FLAGS_HARD | \
232 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
233 _PAGE_EXT_KERN_WRITE | \
234 _PAGE_EXT_KERN_EXEC) \
235 (slot ? _PAGE_PCC_AREA5 : _PAGE_PCC_AREA6) | \
236 (type))
237
238#elif defined(CONFIG_MMU)
239#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_CACHABLE | \
240 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
241
242#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
243 _PAGE_CACHABLE | _PAGE_ACCESSED | \
244 _PAGE_FLAGS_HARD)
245
246#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_CACHABLE | \
247 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
248
249#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_CACHABLE | \
250 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
251
252#define PAGE_EXECREAD PAGE_READONLY
253#define PAGE_RWX PAGE_SHARED
254#define PAGE_WRITEONLY PAGE_SHARED
255
256#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_CACHABLE | \
257 _PAGE_DIRTY | _PAGE_ACCESSED | \
258 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD)
259
260#define PAGE_KERNEL_NOCACHE \
261 __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | \
262 _PAGE_ACCESSED | _PAGE_HW_SHARED | \
263 _PAGE_FLAGS_HARD)
264
265#define PAGE_KERNEL_RO __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
266 _PAGE_DIRTY | _PAGE_ACCESSED | \
267 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD)
268
269#define PAGE_KERNEL_PCC(slot, type) \
270 __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | \
271 _PAGE_ACCESSED | _PAGE_FLAGS_HARD | \
272 (slot ? _PAGE_PCC_AREA5 : _PAGE_PCC_AREA6) | \
273 (type))
274#else
275#define PAGE_NONE __pgprot(0)
276#define PAGE_SHARED __pgprot(0)
277#define PAGE_COPY __pgprot(0)
278#define PAGE_EXECREAD __pgprot(0)
279#define PAGE_RWX __pgprot(0)
280#define PAGE_READONLY __pgprot(0)
281#define PAGE_WRITEONLY __pgprot(0)
282#define PAGE_KERNEL __pgprot(0)
283#define PAGE_KERNEL_NOCACHE __pgprot(0)
284#define PAGE_KERNEL_RO __pgprot(0)
285
286#define PAGE_KERNEL_PCC(slot, type) \
287 __pgprot(0)
288#endif
289
290#endif
291
292#ifndef __ASSEMBLY__
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297
298
299#ifdef CONFIG_X2TLB
300static inline void set_pte(pte_t *ptep, pte_t pte)
301{
302 ptep->pte_high = pte.pte_high;
303 smp_wmb();
304 ptep->pte_low = pte.pte_low;
305}
306#else
307#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
308#endif
309
310#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
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315
316#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
317
318#define pfn_pte(pfn, prot) \
319 __pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
320#define pfn_pmd(pfn, prot) \
321 __pmd(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
322
323#define pte_none(x) (!pte_val(x))
324#define pte_present(x) ((x).pte_low & (_PAGE_PRESENT | _PAGE_PROTNONE))
325
326#define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
327
328#define pmd_none(x) (!pmd_val(x))
329#define pmd_present(x) (pmd_val(x))
330#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
331#define pmd_bad(x) (pmd_val(x) & ~PAGE_MASK)
332
333#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
334#define pte_page(x) pfn_to_page(pte_pfn(x))
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339
340#define pte_not_present(pte) (!((pte).pte_low & _PAGE_PRESENT))
341#define pte_dirty(pte) ((pte).pte_low & _PAGE_DIRTY)
342#define pte_young(pte) ((pte).pte_low & _PAGE_ACCESSED)
343#define pte_file(pte) ((pte).pte_low & _PAGE_FILE)
344#define pte_special(pte) ((pte).pte_low & _PAGE_SPECIAL)
345
346#ifdef CONFIG_X2TLB
347#define pte_write(pte) ((pte).pte_high & _PAGE_EXT_USER_WRITE)
348#else
349#define pte_write(pte) ((pte).pte_low & _PAGE_RW)
350#endif
351
352#define PTE_BIT_FUNC(h,fn,op) \
353static inline pte_t pte_##fn(pte_t pte) { pte.pte_##h op; return pte; }
354
355#ifdef CONFIG_X2TLB
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360
361PTE_BIT_FUNC(high, wrprotect, &= ~_PAGE_EXT_USER_WRITE);
362PTE_BIT_FUNC(high, mkwrite, |= _PAGE_EXT_USER_WRITE | _PAGE_EXT_KERN_WRITE);
363PTE_BIT_FUNC(high, mkhuge, |= _PAGE_SZHUGE);
364#else
365PTE_BIT_FUNC(low, wrprotect, &= ~_PAGE_RW);
366PTE_BIT_FUNC(low, mkwrite, |= _PAGE_RW);
367PTE_BIT_FUNC(low, mkhuge, |= _PAGE_SZHUGE);
368#endif
369
370PTE_BIT_FUNC(low, mkclean, &= ~_PAGE_DIRTY);
371PTE_BIT_FUNC(low, mkdirty, |= _PAGE_DIRTY);
372PTE_BIT_FUNC(low, mkold, &= ~_PAGE_ACCESSED);
373PTE_BIT_FUNC(low, mkyoung, |= _PAGE_ACCESSED);
374PTE_BIT_FUNC(low, mkspecial, |= _PAGE_SPECIAL);
375
376#define __HAVE_ARCH_PTE_SPECIAL
377
378
379
380
381#define pgprot_writecombine(prot) \
382 __pgprot(pgprot_val(prot) & ~_PAGE_CACHABLE)
383
384#define pgprot_noncached pgprot_writecombine
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391
392#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
393
394static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
395{
396 pte.pte_low &= _PAGE_CHG_MASK;
397 pte.pte_low |= pgprot_val(newprot);
398
399#ifdef CONFIG_X2TLB
400 pte.pte_high |= pgprot_val(newprot) >> 32;
401#endif
402
403 return pte;
404}
405
406#define pmd_page_vaddr(pmd) ((unsigned long)pmd_val(pmd))
407#define pmd_page(pmd) (virt_to_page(pmd_val(pmd)))
408
409
410#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
411#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
412#define __pgd_offset(address) pgd_index(address)
413
414
415#define pgd_offset_k(address) pgd_offset(&init_mm, address)
416
417#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
418#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
419
420
421#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
422#define __pte_offset(address) pte_index(address)
423
424#define pte_offset_kernel(dir, address) \
425 ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
426#define pte_offset_map(dir, address) pte_offset_kernel(dir, address)
427#define pte_offset_map_nested(dir, address) pte_offset_kernel(dir, address)
428
429#define pte_unmap(pte) do { } while (0)
430#define pte_unmap_nested(pte) do { } while (0)
431
432#ifdef CONFIG_X2TLB
433#define pte_ERROR(e) \
434 printk("%s:%d: bad pte %p(%08lx%08lx).\n", __FILE__, __LINE__, \
435 &(e), (e).pte_high, (e).pte_low)
436#define pgd_ERROR(e) \
437 printk("%s:%d: bad pgd %016llx.\n", __FILE__, __LINE__, pgd_val(e))
438#else
439#define pte_ERROR(e) \
440 printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
441#define pgd_ERROR(e) \
442 printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
443#endif
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468#ifdef CONFIG_X2TLB
469#define __swp_type(x) ((x).val & 0x1f)
470#define __swp_offset(x) ((x).val >> 5)
471#define __swp_entry(type, offset) ((swp_entry_t){ (type) | (offset) << 5})
472#define __pte_to_swp_entry(pte) ((swp_entry_t){ (pte).pte_high })
473#define __swp_entry_to_pte(x) ((pte_t){ 0, (x).val })
474
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476
477
478#define pte_to_pgoff(pte) ((pte).pte_high)
479#define pgoff_to_pte(off) ((pte_t) { _PAGE_FILE, (off) })
480
481#define PTE_FILE_MAX_BITS 32
482#else
483#define __swp_type(x) ((x).val & 0xff)
484#define __swp_offset(x) ((x).val >> 10)
485#define __swp_entry(type, offset) ((swp_entry_t){(type) | (offset) <<10})
486
487#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) >> 1 })
488#define __swp_entry_to_pte(x) ((pte_t) { (x).val << 1 })
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492
493#define PTE_FILE_MAX_BITS 29
494#define pte_to_pgoff(pte) (pte_val(pte) >> 1)
495#define pgoff_to_pte(off) ((pte_t) { ((off) << 1) | _PAGE_FILE })
496#endif
497
498#endif
499#endif
500