1#ifndef __ASM_SH_PGTABLE_32_H
2#define __ASM_SH_PGTABLE_32_H
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41#define _PAGE_WT 0x001
42#define _PAGE_HW_SHARED 0x002
43#define _PAGE_DIRTY 0x004
44#define _PAGE_CACHABLE 0x008
45#define _PAGE_SZ0 0x010
46#define _PAGE_RW 0x020
47#define _PAGE_USER 0x040
48#define _PAGE_SZ1 0x080
49#define _PAGE_PRESENT 0x100
50#define _PAGE_PROTNONE 0x200
51#define _PAGE_ACCESSED 0x400
52#define _PAGE_SPECIAL 0x800
53
54#define _PAGE_SZ_MASK (_PAGE_SZ0 | _PAGE_SZ1)
55#define _PAGE_PR_MASK (_PAGE_RW | _PAGE_USER)
56
57
58#define _PAGE_EXT_ESZ0 0x0010
59#define _PAGE_EXT_ESZ1 0x0020
60#define _PAGE_EXT_ESZ2 0x0040
61#define _PAGE_EXT_ESZ3 0x0080
62
63#define _PAGE_EXT_USER_EXEC 0x0100
64#define _PAGE_EXT_USER_WRITE 0x0200
65#define _PAGE_EXT_USER_READ 0x0400
66
67#define _PAGE_EXT_KERN_EXEC 0x0800
68#define _PAGE_EXT_KERN_WRITE 0x1000
69#define _PAGE_EXT_KERN_READ 0x2000
70
71#define _PAGE_EXT_WIRED 0x4000
72
73
74#define _PAGE_EXT(x) ((unsigned long long)(x) << 32)
75
76#ifdef CONFIG_X2TLB
77#define _PAGE_PCC_MASK 0x00000000
78#else
79
80
81#define _PAGE_PCC_AREA5 0x00000000
82#define _PAGE_PCC_AREA6 0x80000000
83
84
85#define _PAGE_PCC_IODYN 0x00000001
86#define _PAGE_PCC_IO8 0x20000000
87#define _PAGE_PCC_IO16 0x20000001
88#define _PAGE_PCC_COM8 0x40000000
89#define _PAGE_PCC_COM16 0x40000001
90#define _PAGE_PCC_ATR8 0x60000000
91#define _PAGE_PCC_ATR16 0x60000001
92
93#define _PAGE_PCC_MASK 0xe0000001
94
95
96static inline unsigned long copy_ptea_attributes(unsigned long x)
97{
98 return ((x >> 28) & 0xe) | (x & 0x1);
99}
100#endif
101
102
103#if defined(CONFIG_CPU_SH3)
104#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED| \
105 _PAGE_SZ1 | _PAGE_HW_SHARED)
106#elif defined(CONFIG_X2TLB)
107
108#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED | \
109 _PAGE_PR_MASK | _PAGE_SZ_MASK)
110#else
111#define _PAGE_CLEAR_FLAGS (_PAGE_PROTNONE | _PAGE_ACCESSED)
112#endif
113
114#define _PAGE_FLAGS_HARDWARE_MASK (phys_addr_mask() & ~(_PAGE_CLEAR_FLAGS))
115
116
117#if !defined(CONFIG_MMU)
118# define _PAGE_FLAGS_HARD 0ULL
119#elif defined(CONFIG_X2TLB)
120# if defined(CONFIG_PAGE_SIZE_4KB)
121# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ0)
122# elif defined(CONFIG_PAGE_SIZE_8KB)
123# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ1)
124# elif defined(CONFIG_PAGE_SIZE_64KB)
125# define _PAGE_FLAGS_HARD _PAGE_EXT(_PAGE_EXT_ESZ2)
126# endif
127#else
128# if defined(CONFIG_PAGE_SIZE_4KB)
129# define _PAGE_FLAGS_HARD _PAGE_SZ0
130# elif defined(CONFIG_PAGE_SIZE_64KB)
131# define _PAGE_FLAGS_HARD _PAGE_SZ1
132# endif
133#endif
134
135#if defined(CONFIG_X2TLB)
136# if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
137# define _PAGE_SZHUGE (_PAGE_EXT_ESZ2)
138# elif defined(CONFIG_HUGETLB_PAGE_SIZE_256K)
139# define _PAGE_SZHUGE (_PAGE_EXT_ESZ0 | _PAGE_EXT_ESZ2)
140# elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
141# define _PAGE_SZHUGE (_PAGE_EXT_ESZ0 | _PAGE_EXT_ESZ1 | _PAGE_EXT_ESZ2)
142# elif defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
143# define _PAGE_SZHUGE (_PAGE_EXT_ESZ3)
144# elif defined(CONFIG_HUGETLB_PAGE_SIZE_64MB)
145# define _PAGE_SZHUGE (_PAGE_EXT_ESZ2 | _PAGE_EXT_ESZ3)
146# endif
147# define _PAGE_WIRED (_PAGE_EXT(_PAGE_EXT_WIRED))
148#else
149# if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
150# define _PAGE_SZHUGE (_PAGE_SZ1)
151# elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
152# define _PAGE_SZHUGE (_PAGE_SZ0 | _PAGE_SZ1)
153# endif
154# define _PAGE_WIRED (0)
155#endif
156
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158
159
160
161#ifndef _PAGE_SZHUGE
162# define _PAGE_SZHUGE (_PAGE_FLAGS_HARD)
163#endif
164
165
166
167
168#define _PAGE_CHG_MASK \
169 (PTE_MASK | _PAGE_ACCESSED | _PAGE_CACHABLE | \
170 _PAGE_DIRTY | _PAGE_SPECIAL)
171
172#ifndef __ASSEMBLY__
173
174#if defined(CONFIG_X2TLB)
175#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_CACHABLE | \
176 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
177
178#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
179 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
180 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
181 _PAGE_EXT_KERN_WRITE | \
182 _PAGE_EXT_USER_READ | \
183 _PAGE_EXT_USER_WRITE))
184
185#define PAGE_EXECREAD __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
186 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
187 _PAGE_EXT(_PAGE_EXT_KERN_EXEC | \
188 _PAGE_EXT_KERN_READ | \
189 _PAGE_EXT_USER_EXEC | \
190 _PAGE_EXT_USER_READ))
191
192#define PAGE_COPY PAGE_EXECREAD
193
194#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
195 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
196 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
197 _PAGE_EXT_USER_READ))
198
199#define PAGE_WRITEONLY __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
200 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
201 _PAGE_EXT(_PAGE_EXT_KERN_WRITE | \
202 _PAGE_EXT_USER_WRITE))
203
204#define PAGE_RWX __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | \
205 _PAGE_CACHABLE | _PAGE_FLAGS_HARD | \
206 _PAGE_EXT(_PAGE_EXT_KERN_WRITE | \
207 _PAGE_EXT_KERN_READ | \
208 _PAGE_EXT_KERN_EXEC | \
209 _PAGE_EXT_USER_WRITE | \
210 _PAGE_EXT_USER_READ | \
211 _PAGE_EXT_USER_EXEC))
212
213#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
214 _PAGE_DIRTY | _PAGE_ACCESSED | \
215 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD | \
216 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
217 _PAGE_EXT_KERN_WRITE | \
218 _PAGE_EXT_KERN_EXEC))
219
220#define PAGE_KERNEL_NOCACHE \
221 __pgprot(_PAGE_PRESENT | _PAGE_DIRTY | \
222 _PAGE_ACCESSED | _PAGE_HW_SHARED | \
223 _PAGE_FLAGS_HARD | \
224 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
225 _PAGE_EXT_KERN_WRITE | \
226 _PAGE_EXT_KERN_EXEC))
227
228#define PAGE_KERNEL_RO __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
229 _PAGE_DIRTY | _PAGE_ACCESSED | \
230 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD | \
231 _PAGE_EXT(_PAGE_EXT_KERN_READ | \
232 _PAGE_EXT_KERN_EXEC))
233
234#define PAGE_KERNEL_PCC(slot, type) \
235 __pgprot(0)
236
237#elif defined(CONFIG_MMU)
238#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_CACHABLE | \
239 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
240
241#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
242 _PAGE_CACHABLE | _PAGE_ACCESSED | \
243 _PAGE_FLAGS_HARD)
244
245#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_CACHABLE | \
246 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
247
248#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_CACHABLE | \
249 _PAGE_ACCESSED | _PAGE_FLAGS_HARD)
250
251#define PAGE_EXECREAD PAGE_READONLY
252#define PAGE_RWX PAGE_SHARED
253#define PAGE_WRITEONLY PAGE_SHARED
254
255#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_CACHABLE | \
256 _PAGE_DIRTY | _PAGE_ACCESSED | \
257 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD)
258
259#define PAGE_KERNEL_NOCACHE \
260 __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | \
261 _PAGE_ACCESSED | _PAGE_HW_SHARED | \
262 _PAGE_FLAGS_HARD)
263
264#define PAGE_KERNEL_RO __pgprot(_PAGE_PRESENT | _PAGE_CACHABLE | \
265 _PAGE_DIRTY | _PAGE_ACCESSED | \
266 _PAGE_HW_SHARED | _PAGE_FLAGS_HARD)
267
268#define PAGE_KERNEL_PCC(slot, type) \
269 __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | \
270 _PAGE_ACCESSED | _PAGE_FLAGS_HARD | \
271 (slot ? _PAGE_PCC_AREA5 : _PAGE_PCC_AREA6) | \
272 (type))
273#else
274#define PAGE_NONE __pgprot(0)
275#define PAGE_SHARED __pgprot(0)
276#define PAGE_COPY __pgprot(0)
277#define PAGE_EXECREAD __pgprot(0)
278#define PAGE_RWX __pgprot(0)
279#define PAGE_READONLY __pgprot(0)
280#define PAGE_WRITEONLY __pgprot(0)
281#define PAGE_KERNEL __pgprot(0)
282#define PAGE_KERNEL_NOCACHE __pgprot(0)
283#define PAGE_KERNEL_RO __pgprot(0)
284
285#define PAGE_KERNEL_PCC(slot, type) \
286 __pgprot(0)
287#endif
288
289#endif
290
291#ifndef __ASSEMBLY__
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297
298#ifdef CONFIG_X2TLB
299static inline void set_pte(pte_t *ptep, pte_t pte)
300{
301 ptep->pte_high = pte.pte_high;
302 smp_wmb();
303 ptep->pte_low = pte.pte_low;
304}
305#else
306#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
307#endif
308
309#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
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315#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
316
317#define pfn_pte(pfn, prot) \
318 __pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
319#define pfn_pmd(pfn, prot) \
320 __pmd(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
321
322#define pte_none(x) (!pte_val(x))
323#define pte_present(x) ((x).pte_low & (_PAGE_PRESENT | _PAGE_PROTNONE))
324
325#define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
326
327#define pmd_none(x) (!pmd_val(x))
328#define pmd_present(x) (pmd_val(x))
329#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
330#define pmd_bad(x) (pmd_val(x) & ~PAGE_MASK)
331
332#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
333#define pte_page(x) pfn_to_page(pte_pfn(x))
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339#define pte_not_present(pte) (!((pte).pte_low & _PAGE_PRESENT))
340#define pte_dirty(pte) ((pte).pte_low & _PAGE_DIRTY)
341#define pte_young(pte) ((pte).pte_low & _PAGE_ACCESSED)
342#define pte_special(pte) ((pte).pte_low & _PAGE_SPECIAL)
343
344#ifdef CONFIG_X2TLB
345#define pte_write(pte) \
346 ((pte).pte_high & (_PAGE_EXT_USER_WRITE | _PAGE_EXT_KERN_WRITE))
347#else
348#define pte_write(pte) ((pte).pte_low & _PAGE_RW)
349#endif
350
351#define PTE_BIT_FUNC(h,fn,op) \
352static inline pte_t pte_##fn(pte_t pte) { pte.pte_##h op; return pte; }
353
354#ifdef CONFIG_X2TLB
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360PTE_BIT_FUNC(high, wrprotect, &= ~(_PAGE_EXT_USER_WRITE | _PAGE_EXT_KERN_WRITE));
361PTE_BIT_FUNC(high, mkwrite, |= _PAGE_EXT_USER_WRITE | _PAGE_EXT_KERN_WRITE);
362PTE_BIT_FUNC(high, mkhuge, |= _PAGE_SZHUGE);
363#else
364PTE_BIT_FUNC(low, wrprotect, &= ~_PAGE_RW);
365PTE_BIT_FUNC(low, mkwrite, |= _PAGE_RW);
366PTE_BIT_FUNC(low, mkhuge, |= _PAGE_SZHUGE);
367#endif
368
369PTE_BIT_FUNC(low, mkclean, &= ~_PAGE_DIRTY);
370PTE_BIT_FUNC(low, mkdirty, |= _PAGE_DIRTY);
371PTE_BIT_FUNC(low, mkold, &= ~_PAGE_ACCESSED);
372PTE_BIT_FUNC(low, mkyoung, |= _PAGE_ACCESSED);
373PTE_BIT_FUNC(low, mkspecial, |= _PAGE_SPECIAL);
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377
378#define pgprot_writecombine(prot) \
379 __pgprot(pgprot_val(prot) & ~_PAGE_CACHABLE)
380
381#define pgprot_noncached pgprot_writecombine
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389#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
390
391static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
392{
393 pte.pte_low &= _PAGE_CHG_MASK;
394 pte.pte_low |= pgprot_val(newprot);
395
396#ifdef CONFIG_X2TLB
397 pte.pte_high |= pgprot_val(newprot) >> 32;
398#endif
399
400 return pte;
401}
402
403#define pmd_page_vaddr(pmd) ((unsigned long)pmd_val(pmd))
404#define pmd_page(pmd) (virt_to_page(pmd_val(pmd)))
405
406
407#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
408#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
409#define __pgd_offset(address) pgd_index(address)
410
411
412#define pgd_offset_k(address) pgd_offset(&init_mm, address)
413
414#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
415#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
416
417
418#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
419#define __pte_offset(address) pte_index(address)
420
421#define pte_offset_kernel(dir, address) \
422 ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
423#define pte_offset_map(dir, address) pte_offset_kernel(dir, address)
424#define pte_unmap(pte) do { } while (0)
425
426#ifdef CONFIG_X2TLB
427#define pte_ERROR(e) \
428 printk("%s:%d: bad pte %p(%08lx%08lx).\n", __FILE__, __LINE__, \
429 &(e), (e).pte_high, (e).pte_low)
430#define pgd_ERROR(e) \
431 printk("%s:%d: bad pgd %016llx.\n", __FILE__, __LINE__, pgd_val(e))
432#else
433#define pte_ERROR(e) \
434 printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
435#define pgd_ERROR(e) \
436 printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
437#endif
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459#ifdef CONFIG_X2TLB
460#define __swp_type(x) ((x).val & 0x1f)
461#define __swp_offset(x) ((x).val >> 5)
462#define __swp_entry(type, offset) ((swp_entry_t){ (type) | (offset) << 5})
463#define __pte_to_swp_entry(pte) ((swp_entry_t){ (pte).pte_high })
464#define __swp_entry_to_pte(x) ((pte_t){ 0, (x).val })
465
466#else
467#define __swp_type(x) ((x).val & 0xff)
468#define __swp_offset(x) ((x).val >> 10)
469#define __swp_entry(type, offset) ((swp_entry_t){(type) | (offset) <<10})
470
471#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) >> 1 })
472#define __swp_entry_to_pte(x) ((pte_t) { (x).val << 1 })
473#endif
474
475#endif
476#endif
477