2 * reorganization around 2.3.39, routines moved from sun3_pgtable.h
5 * 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam)
7 * moved 1/26/2000 Sam Creasey
10 #ifndef _SUN3_PGALLOC_H
11 #define _SUN3_PGALLOC_H
15 /* FIXME - when we get this compiling */
16 /* erm, now that it's compiling, what do we do with it? */
17 #define _KERNPG_TABLE 0
19 extern const char bad_pmd_string
[];
21 #define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); })
24 static inline void pte_free_kernel(pte_t
* pte
)
26 free_page((unsigned long) pte
);
29 static inline void pte_free(struct page
*page
)
34 #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
36 static inline pte_t
*pte_alloc_one_kernel(struct mm_struct
*mm
,
37 unsigned long address
)
39 unsigned long page
= __get_free_page(GFP_KERNEL
|__GFP_REPEAT
);
44 memset((void *)page
, 0, PAGE_SIZE
);
45 return (pte_t
*) (page
);
48 static inline struct page
*pte_alloc_one(struct mm_struct
*mm
,
49 unsigned long address
)
51 struct page
*page
= alloc_pages(GFP_KERNEL
|__GFP_REPEAT
, 0);
61 static inline void pmd_populate_kernel(struct mm_struct
*mm
, pmd_t
*pmd
, pte_t
*pte
)
63 pmd_val(*pmd
) = __pa((unsigned long)pte
);
66 static inline void pmd_populate(struct mm_struct
*mm
, pmd_t
*pmd
, struct page
*page
)
68 pmd_val(*pmd
) = __pa((unsigned long)page_address(page
));
72 * allocating and freeing a pmd is trivial: the 1-entry pmd is
73 * inside the pgd, so has no extra memory associated with it.
75 #define pmd_free(x) do { } while (0)
76 #define __pmd_free_tlb(tlb, x) do { } while (0)
78 static inline void pgd_free(pgd_t
* pgd
)
80 free_page((unsigned long) pgd
);
83 static inline pgd_t
* pgd_alloc(struct mm_struct
*mm
)
87 new_pgd
= (pgd_t
*)get_zeroed_page(GFP_KERNEL
);
88 memcpy(new_pgd
, swapper_pg_dir
, PAGE_SIZE
);
89 memset(new_pgd
, 0, (PAGE_OFFSET
>> PGDIR_SHIFT
));
93 #define pgd_populate(mm, pmd, pte) BUG()
95 #endif /* SUN3_PGALLOC_H */