2 * Copyright 2007-2009 Freescale Semiconductor, Inc. All Rights Reserved.
5 #ifndef M68K_CF_PGALLOC_H
6 #define M68K_CF_PGALLOC_H
7 #include <linux/highmem.h>
8 #include <asm/coldfire.h>
10 #include <asm/cf_tlbflush.h>
11 #include <asm/cf_cacheflush.h>
13 extern inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
15 free_page((unsigned long) pte);
18 extern const char bad_pmd_string[];
20 extern inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
21 unsigned long address)
23 unsigned long page = __get_free_page(GFP_KERNEL|__GFP_REPEAT);
28 memset((void *)page, 0, PAGE_SIZE);
29 return (pte_t *) (page);
32 extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address)
37 #define pmd_alloc_one_fast(mm, address) ({ BUG(); ((pmd_t *)1); })
38 #define pmd_alloc_one(mm, address) ({ BUG(); ((pmd_t *)2); })
40 #define pte_alloc_one_fast(mm, addr) pte_alloc_one(mm, addr)
42 #define pmd_populate(mm, pmd, page) (pmd_val(*pmd) = \
43 (unsigned long)(page_address(page)))
45 #define pmd_populate_kernel(mm, pmd, pte) (pmd_val(*pmd) = (unsigned long)(pte))
47 #define pmd_pgtable(pmd) pmd_page(pmd)
49 static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *page, unsigned long address)
54 #define __pmd_free_tlb(tlb, pmd, addr) do { } while (0)
56 static inline struct page *pte_alloc_one(struct mm_struct *mm,
57 unsigned long address)
59 struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT, 0);
68 __flush_page_to_ram(pte);
69 flush_tlb_kernel_page(pte);
77 extern inline void pte_free(struct mm_struct *mm, struct page *page)
83 * In our implementation, each pgd entry contains 1 pmd that is never allocated
84 * or freed. pgd_present is always 1, so this should never be called. -NL
86 #define pmd_free(mm, pmd) BUG()
88 extern inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
90 free_page((unsigned long) pgd);
93 extern inline pgd_t *pgd_alloc(struct mm_struct *mm)
97 new_pgd = (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_NOWARN);
100 memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE);
101 memset(new_pgd, 0, PAGE_OFFSET >> PGDIR_SHIFT);
105 #define pgd_populate(mm, pmd, pte) BUG()
107 #endif /* M68K_CF_PGALLOC_H */