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#define _PAGE_EXT_WIRED 0x4000
75
76
77#define _PAGE_EXT(x) ((unsigned long long)(x) << 32)
78
79#ifdef CONFIG_X2TLB
80#define _PAGE_PCC_MASK 0x00000000
81#else
82
83
84#define _PAGE_PCC_AREA5 0x00000000
85#define _PAGE_PCC_AREA6 0x80000000
86
87
88#define _PAGE_PCC_IODYN 0x00000001
89#define _PAGE_PCC_IO8 0x20000000
90#define _PAGE_PCC_IO16 0x20000001
91#define _PAGE_PCC_COM8 0x40000000
92#define _PAGE_PCC_COM16 0x40000001
93#define _PAGE_PCC_ATR8 0x60000000
94#define _PAGE_PCC_ATR16 0x60000001
95
96#define _PAGE_PCC_MASK 0xe0000001
97
98
99static inline unsigned long copy_ptea_attributes(unsigned long x)
100{
101 return ((x >> 28) & 0xe) | (x & 0x1);
102}
103#endif
104
105
106#if defined(CONFIG_CPU_SH3)
107#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED| \
108 _PAGE_FILE | _PAGE_SZ1 | \
109 _PAGE_HW_SHARED)
110#elif defined(CONFIG_X2TLB)
111
112#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED | \
113 _PAGE_FILE | _PAGE_PR_MASK | _PAGE_SZ_MASK)
114#else
115#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED | _PAGE_FILE)
116#endif
117
118#define _PAGE_FLAGS_HARDWARE_MASK (phys_addr_mask() & ~(_PAGE_CLEAR_FLAGS))
119
120
121#if !defined(CONFIG_MMU)
122# define _PAGE_FLAGS_HARD 0ULL
123#elif defined(CONFIG_X2TLB)
124# if defined(CONFIG_PAGE_SIZE_4KB)
125# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ0)
126# elif defined(CONFIG_PAGE_SIZE_8KB)
127# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ1)
128# elif defined(CONFIG_PAGE_SIZE_64KB)
129# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ2)
130# endif
131#else
132# if defined(CONFIG_PAGE_SIZE_4KB)
133# define _PAGE_FLAGS_HARD _PAGE_SZ0
134# elif defined(CONFIG_PAGE_SIZE_64KB)
135# define _PAGE_FLAGS_HARD _PAGE_SZ1
136# endif
137#endif
138
139#if defined(CONFIG_X2TLB)
140# if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
141# define _PAGE_SZHUGE (_PAGE_EXT_ESZ2)
142# elif defined(CONFIG_HUGETLB_PAGE_SIZE_256K)
143# define _PAGE_SZHUGE (_PAGE_EXT_ESZ0 | _PAGE_EXT_ESZ2)
144# elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
145# define _PAGE_SZHUGE (_PAGE_EXT_ESZ0 | _PAGE_EXT_ESZ1 | _PAGE_EXT_ESZ2)
146# elif defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
147# define _PAGE_SZHUGE (_PAGE_EXT_ESZ3)
148# elif defined(CONFIG_HUGETLB_PAGE_SIZE_64MB)
149# define _PAGE_SZHUGE (_PAGE_EXT_ESZ2 | _PAGE_EXT_ESZ3)
150# endif
151# define _PAGE_WIRED (_PAGE_EXT(_PAGE_EXT_WIRED))
152#else
153# if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
154# define _PAGE_SZHUGE (_PAGE_SZ1)
155# elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
156# define _PAGE_SZHUGE (_PAGE_SZ0 | _PAGE_SZ1)
157# endif
158# define _PAGE_WIRED (0)
159#endif
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161
162
163
164
165#ifndef _PAGE_SZHUGE
166# define _PAGE_SZHUGE (_PAGE_FLAGS_HARD)
167#endif
168
169
170
171
172#define _PAGE_CHG_MASK \
173 (PTE_MASK | _PAGE_ACCESSED | _PAGE_CACHABLE | \
174 _PAGE_DIRTY | _PAGE_SPECIAL)
175
176#ifndef __ASSEMBLY__
177
178#if defined(CONFIG_X2TLB)
179#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_CACHABLE | \
180 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
181
182#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
183 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
184 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
185 _PAGE_EXT_KERN_WRITE | \
186 _PAGE_EXT_USER_READ | \
187 _PAGE_EXT_USER_WRITE))
188
189#define PAGE_EXECREAD __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
190 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
191 _PAGE_EXT(_PAGE_EXT_KERN_EXEC | \
192 _PAGE_EXT_KERN_READ | \
193 _PAGE_EXT_USER_EXEC | \
194 _PAGE_EXT_USER_READ))
195
196#define PAGE_COPY PAGE_EXECREAD
197
198#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
199 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
200 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
201 _PAGE_EXT_USER_READ))
202
203#define PAGE_WRITEONLY __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
204 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
205 _PAGE_EXT(_PAGE_EXT_KERN_WRITE | \
206 _PAGE_EXT_USER_WRITE))
207
208#define PAGE_RWX __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
209 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
210 _PAGE_EXT(_PAGE_EXT_KERN_WRITE | \
211 _PAGE_EXT_KERN_READ | \
212 _PAGE_EXT_KERN_EXEC | \
213 _PAGE_EXT_USER_WRITE | \
214 _PAGE_EXT_USER_READ | \
215 _PAGE_EXT_USER_EXEC))
216
217#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
218 _PAGE_DIRTY | _PAGE_ACCESSED | \
219 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD | \
220 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
221 _PAGE_EXT_KERN_WRITE | \
222 _PAGE_EXT_KERN_EXEC))
223
224#define PAGE_KERNEL_NOCACHE \
225 __pgprot(_PAGE_PRESENT | _PAGE_DIRTY | \
226 _PAGE_ACCESSED | _PAGE_HW_SHARED | \
227 _PAGE_FLAGS_HARD | \
228 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
229 _PAGE_EXT_KERN_WRITE | \
230 _PAGE_EXT_KERN_EXEC))
231
232#define PAGE_KERNEL_RO __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
233 _PAGE_DIRTY | _PAGE_ACCESSED | \
234 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD | \
235 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
236 _PAGE_EXT_KERN_EXEC))
237
238#define PAGE_KERNEL_PCC(slot, type) \
239 __pgprot(0)
240
241#elif defined(CONFIG_MMU)
242#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_CACHABLE | \
243 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
244
245#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
246 _PAGE_CACHABLE | _PAGE_ACCESSED | \
247 _PAGE_FLAGS_HARD)
248
249#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_CACHABLE | \
250 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
251
252#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_CACHABLE | \
253 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
254
255#define PAGE_EXECREAD PAGE_READONLY
256#define PAGE_RWX PAGE_SHARED
257#define PAGE_WRITEONLY PAGE_SHARED
258
259#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_CACHABLE | \
260 _PAGE_DIRTY | _PAGE_ACCESSED | \
261 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD)
262
263#define PAGE_KERNEL_NOCACHE \
264 __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | \
265 _PAGE_ACCESSED | _PAGE_HW_SHARED | \
266 _PAGE_FLAGS_HARD)
267
268#define PAGE_KERNEL_RO __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
269 _PAGE_DIRTY | _PAGE_ACCESSED | \
270 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD)
271
272#define PAGE_KERNEL_PCC(slot, type) \
273 __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | \
274 _PAGE_ACCESSED | _PAGE_FLAGS_HARD | \
275 (slot ? _PAGE_PCC_AREA5 : _PAGE_PCC_AREA6) | \
276 (type))
277#else
278#define PAGE_NONE __pgprot(0)
279#define PAGE_SHARED __pgprot(0)
280#define PAGE_COPY __pgprot(0)
281#define PAGE_EXECREAD __pgprot(0)
282#define PAGE_RWX __pgprot(0)
283#define PAGE_READONLY __pgprot(0)
284#define PAGE_WRITEONLY __pgprot(0)
285#define PAGE_KERNEL __pgprot(0)
286#define PAGE_KERNEL_NOCACHE __pgprot(0)
287#define PAGE_KERNEL_RO __pgprot(0)
288
289#define PAGE_KERNEL_PCC(slot, type) \
290 __pgprot(0)
291#endif
292
293#endif
294
295#ifndef __ASSEMBLY__
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301
302#ifdef CONFIG_X2TLB
303static inline void set_pte(pte_t *ptep, pte_t pte)
304{
305 ptep->pte_high = pte.pte_high;
306 smp_wmb();
307 ptep->pte_low = pte.pte_low;
308}
309#else
310#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
311#endif
312
313#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
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318
319#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
320
321#define pfn_pte(pfn, prot) \
322 __pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
323#define pfn_pmd(pfn, prot) \
324 __pmd(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
325
326#define pte_none(x) (!pte_val(x))
327#define pte_present(x) ((x).pte_low & (_PAGE_PRESENT | _PAGE_PROTNONE))
328
329#define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
330
331#define pmd_none(x) (!pmd_val(x))
332#define pmd_present(x) (pmd_val(x))
333#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
334#define pmd_bad(x) (pmd_val(x) & ~PAGE_MASK)
335
336#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
337#define pte_page(x) pfn_to_page(pte_pfn(x))
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342
343#define pte_not_present(pte) (!((pte).pte_low & _PAGE_PRESENT))
344#define pte_dirty(pte) ((pte).pte_low & _PAGE_DIRTY)
345#define pte_young(pte) ((pte).pte_low & _PAGE_ACCESSED)
346#define pte_file(pte) ((pte).pte_low & _PAGE_FILE)
347#define pte_special(pte) ((pte).pte_low & _PAGE_SPECIAL)
348
349#ifdef CONFIG_X2TLB
350#define pte_write(pte) \
351 ((pte).pte_high & (_PAGE_EXT_USER_WRITE | _PAGE_EXT_KERN_WRITE))
352#else
353#define pte_write(pte) ((pte).pte_low & _PAGE_RW)
354#endif
355
356#define PTE_BIT_FUNC(h,fn,op) \
357static inline pte_t pte_##fn(pte_t pte) { pte.pte_##h op; return pte; }
358
359#ifdef CONFIG_X2TLB
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365PTE_BIT_FUNC(high, wrprotect, &= ~(_PAGE_EXT_USER_WRITE | _PAGE_EXT_KERN_WRITE));
366PTE_BIT_FUNC(high, mkwrite, |= _PAGE_EXT_USER_WRITE | _PAGE_EXT_KERN_WRITE);
367PTE_BIT_FUNC(high, mkhuge, |= _PAGE_SZHUGE);
368#else
369PTE_BIT_FUNC(low, wrprotect, &= ~_PAGE_RW);
370PTE_BIT_FUNC(low, mkwrite, |= _PAGE_RW);
371PTE_BIT_FUNC(low, mkhuge, |= _PAGE_SZHUGE);
372#endif
373
374PTE_BIT_FUNC(low, mkclean, &= ~_PAGE_DIRTY);
375PTE_BIT_FUNC(low, mkdirty, |= _PAGE_DIRTY);
376PTE_BIT_FUNC(low, mkold, &= ~_PAGE_ACCESSED);
377PTE_BIT_FUNC(low, mkyoung, |= _PAGE_ACCESSED);
378PTE_BIT_FUNC(low, mkspecial, |= _PAGE_SPECIAL);
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382
383#define pgprot_writecombine(prot) \
384 __pgprot(pgprot_val(prot) & ~_PAGE_CACHABLE)
385
386#define pgprot_noncached pgprot_writecombine
387
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393
394#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
395
396static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
397{
398 pte.pte_low &= _PAGE_CHG_MASK;
399 pte.pte_low |= pgprot_val(newprot);
400
401#ifdef CONFIG_X2TLB
402 pte.pte_high |= pgprot_val(newprot) >> 32;
403#endif
404
405 return pte;
406}
407
408#define pmd_page_vaddr(pmd) ((unsigned long)pmd_val(pmd))
409#define pmd_page(pmd) (virt_to_page(pmd_val(pmd)))
410
411
412#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
413#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
414#define __pgd_offset(address) pgd_index(address)
415
416
417#define pgd_offset_k(address) pgd_offset(&init_mm, address)
418
419#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
420#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
421
422
423#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
424#define __pte_offset(address) pte_index(address)
425
426#define pte_offset_kernel(dir, address) \
427 ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
428#define pte_offset_map(dir, address) pte_offset_kernel(dir, address)
429#define pte_unmap(pte) do { } while (0)
430
431#ifdef CONFIG_X2TLB
432#define pte_ERROR(e) \
433 printk("%s:%d: bad pte %p(%08lx%08lx).\n", __FILE__, __LINE__, \
434 &(e), (e).pte_high, (e).pte_low)
435#define pgd_ERROR(e) \
436 printk("%s:%d: bad pgd %016llx.\n", __FILE__, __LINE__, pgd_val(e))
437#else
438#define pte_ERROR(e) \
439 printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
440#define pgd_ERROR(e) \
441 printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
442#endif
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467#ifdef CONFIG_X2TLB
468#define __swp_type(x) ((x).val & 0x1f)
469#define __swp_offset(x) ((x).val >> 5)
470#define __swp_entry(type, offset) ((swp_entry_t){ (type) | (offset) << 5})
471#define __pte_to_swp_entry(pte) ((swp_entry_t){ (pte).pte_high })
472#define __swp_entry_to_pte(x) ((pte_t){ 0, (x).val })
473
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476
477#define pte_to_pgoff(pte) ((pte).pte_high)
478#define pgoff_to_pte(off) ((pte_t) { _PAGE_FILE, (off) })
479
480#define PTE_FILE_MAX_BITS 32
481#else
482#define __swp_type(x) ((x).val & 0xff)
483#define __swp_offset(x) ((x).val >> 10)
484#define __swp_entry(type, offset) ((swp_entry_t){(type) | (offset) <<10})
485
486#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) >> 1 })
487#define __swp_entry_to_pte(x) ((pte_t) { (x).val << 1 })
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491
492#define PTE_FILE_MAX_BITS 29
493#define pte_to_pgoff(pte) (pte_val(pte) >> 1)
494#define pgoff_to_pte(off) ((pte_t) { ((off) << 1) | _PAGE_FILE })
495#endif
496
497#endif
498#endif
499