1#ifndef __ASM_SH_PGTABLE_64_H
2#define __ASM_SH_PGTABLE_64_H
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18#include <linux/threads.h>
19#include <asm/processor.h>
20#include <asm/page.h>
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24
25#define pte_ERROR(e) \
26 printk("%s:%d: bad pte %016Lx.\n", __FILE__, __LINE__, pte_val(e))
27#define pgd_ERROR(e) \
28 printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
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32
33#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
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35static __inline__ void set_pte(pte_t *pteptr, pte_t pteval)
36{
37 unsigned long long x = ((unsigned long long) pteval.pte_low);
38 unsigned long long *xp = (unsigned long long *) pteptr;
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42 *(xp) = (x & NPHYS_SIGN) ? (x | NPHYS_MASK) : x;
43}
44#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
45
46static __inline__ void pmd_set(pmd_t *pmdp,pte_t *ptep)
47{
48 pmd_val(*pmdp) = (unsigned long) ptep;
49}
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56#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
57#define __pgd_offset(address) pgd_index(address)
58#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
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60
61#define pgd_offset_k(address) pgd_offset(&init_mm, address)
62
63#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
64#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
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68
69#define _PMD_EMPTY 0x0
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71#define pmd_present(pmd_entry) (pmd_val(pmd_entry) & _PAGE_PRESENT)
72#define pmd_clear(pmd_entry_p) (set_pmd((pmd_entry_p), __pmd(_PMD_EMPTY)))
73#define pmd_none(pmd_entry) (pmd_val((pmd_entry)) == _PMD_EMPTY)
74#define pmd_bad(pmd_entry) ((pmd_val(pmd_entry) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
75
76#define pmd_page_vaddr(pmd_entry) \
77 ((unsigned long) __va(pmd_val(pmd_entry) & PAGE_MASK))
78
79#define pmd_page(pmd) \
80 (virt_to_page(pmd_val(pmd)))
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82
83#define pte_index(address) \
84 ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
85
86#define __pte_offset(address) pte_index(address)
87
88#define pte_offset_kernel(dir, addr) \
89 ((pte_t *) ((pmd_val(*(dir))) & PAGE_MASK) + pte_index((addr)))
90
91#define pte_offset_map(dir,addr) pte_offset_kernel(dir, addr)
92#define pte_offset_map_nested(dir,addr) pte_offset_kernel(dir, addr)
93#define pte_unmap(pte) do { } while (0)
94#define pte_unmap_nested(pte) do { } while (0)
95
96#ifndef __ASSEMBLY__
97#define IOBASE_VADDR 0xff000000
98#define IOBASE_END 0xffffffff
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116#define _PAGE_WT 0x001
117#define _PAGE_DEVICE 0x001
118#define _PAGE_CACHABLE 0x002
119#define _PAGE_PRESENT 0x004
120#define _PAGE_FILE 0x004
121#define _PAGE_SIZE0 0x008
122#define _PAGE_SIZE1 0x010
123#define _PAGE_SHARED 0x020
124#define _PAGE_READ 0x040
125#define _PAGE_EXECUTE 0x080
126#define _PAGE_WRITE 0x100
127#define _PAGE_USER 0x200
128#define _PAGE_DIRTY 0x400
129#define _PAGE_ACCESSED 0x800
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132#define _PAGE_FLAGS_HARDWARE_MASK 0xfffffffffffff3dbLL
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137#if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
138#define _PAGE_SZHUGE (_PAGE_SIZE0)
139#elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
140#define _PAGE_SZHUGE (_PAGE_SIZE1)
141#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512MB)
142#define _PAGE_SZHUGE (_PAGE_SIZE0 | _PAGE_SIZE1)
143#endif
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149#ifndef _PAGE_SZHUGE
150# define _PAGE_SZHUGE (0)
151#endif
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162#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
163 _PAGE_EXECUTE | \
164 _PAGE_CACHABLE | _PAGE_ACCESSED | _PAGE_DIRTY | \
165 _PAGE_SHARED)
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168#define _PAGE_TABLE (_KERNPG_TABLE | _PAGE_USER)
169
170#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
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175#define _PAGE_COMMON (_PAGE_PRESENT | _PAGE_USER | \
176 _PAGE_CACHABLE | _PAGE_ACCESSED)
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178#define PAGE_NONE __pgprot(_PAGE_CACHABLE | _PAGE_ACCESSED)
179#define PAGE_SHARED __pgprot(_PAGE_COMMON | _PAGE_READ | _PAGE_WRITE | \
180 _PAGE_SHARED)
181#define PAGE_EXECREAD __pgprot(_PAGE_COMMON | _PAGE_READ | _PAGE_EXECUTE)
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187#define PAGE_COPY PAGE_EXECREAD
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189#define PAGE_READONLY __pgprot(_PAGE_COMMON | _PAGE_READ)
190#define PAGE_WRITEONLY __pgprot(_PAGE_COMMON | _PAGE_WRITE)
191#define PAGE_RWX __pgprot(_PAGE_COMMON | _PAGE_READ | \
192 _PAGE_WRITE | _PAGE_EXECUTE)
193#define PAGE_KERNEL __pgprot(_KERNPG_TABLE)
194
195#define PAGE_KERNEL_NOCACHE \
196 __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
197 _PAGE_EXECUTE | _PAGE_ACCESSED | \
198 _PAGE_DIRTY | _PAGE_SHARED)
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202#define pgprot_noncached(x) __pgprot(((x).pgprot & ~(_PAGE_CACHABLE)) | _PAGE_DEVICE)
203#define pgprot_writecombine(prot) __pgprot(pgprot_val(prot) & ~_PAGE_CACHABLE)
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208extern void __handle_bad_pmd_kernel(pmd_t * pmd);
209#define __handle_bad_pmd(x) __handle_bad_pmd_kernel(x)
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230#define _PTE_EMPTY 0x0
231#define pte_present(x) (pte_val(x) & _PAGE_PRESENT)
232#define pte_clear(mm,addr,xp) (set_pte_at(mm, addr, xp, __pte(_PTE_EMPTY)))
233#define pte_none(x) (pte_val(x) == _PTE_EMPTY)
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245#define pte_pagenr(x) (((unsigned long) (pte_val(x)) - \
246 __MEMORY_START) >> PAGE_SHIFT)
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251#define pte_page(x) (mem_map + pte_pagenr(x))
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256#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
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262static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
263static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
264static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; }
265static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; }
266static inline int pte_special(pte_t pte){ return 0; }
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268static inline pte_t pte_wrprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_WRITE)); return pte; }
269static inline pte_t pte_mkclean(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_DIRTY)); return pte; }
270static inline pte_t pte_mkold(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_ACCESSED)); return pte; }
271static inline pte_t pte_mkwrite(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_WRITE)); return pte; }
272static inline pte_t pte_mkdirty(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_DIRTY)); return pte; }
273static inline pte_t pte_mkyoung(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_ACCESSED)); return pte; }
274static inline pte_t pte_mkhuge(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_SZHUGE)); return pte; }
275static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
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283#define mk_pte(page,pgprot) \
284({ \
285 pte_t __pte; \
286 \
287 set_pte(&__pte, __pte((((page)-mem_map) << PAGE_SHIFT) | \
288 __MEMORY_START | pgprot_val((pgprot)))); \
289 __pte; \
290})
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296#define mk_pte_phys(physpage, pgprot) \
297({ pte_t __pte; set_pte(&__pte, __pte(physpage | pgprot_val(pgprot))); __pte; })
298
299static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
300{ set_pte(&pte, __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot))); return pte; }
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303#define __swp_type(x) (((x).val & 3) + (((x).val >> 1) & 0x3c))
304#define __swp_offset(x) ((x).val >> 8)
305#define __swp_entry(type, offset) ((swp_entry_t) { ((offset << 8) + ((type & 0x3c) << 1) + (type & 3)) })
306#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
307#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
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310#define PTE_FILE_MAX_BITS 29
311#define pte_to_pgoff(pte) (pte_val(pte))
312#define pgoff_to_pte(off) ((pte_t) { (off) | _PAGE_FILE })
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314#endif
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316#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
317#define pfn_pmd(pfn, prot) __pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
318
319#endif
320