diff options
| -rw-r--r-- | arch/m68k/include/asm/mcf_pgalloc.h | 102 | ||||
| -rw-r--r-- | arch/m68k/include/asm/pgalloc.h | 4 |
2 files changed, 105 insertions, 1 deletions
diff --git a/arch/m68k/include/asm/mcf_pgalloc.h b/arch/m68k/include/asm/mcf_pgalloc.h new file mode 100644 index 000000000000..313f3dd23cdc --- /dev/null +++ b/arch/m68k/include/asm/mcf_pgalloc.h @@ -0,0 +1,102 @@ +#ifndef M68K_MCF_PGALLOC_H +#define M68K_MCF_PGALLOC_H + +#include <asm/tlb.h> +#include <asm/tlbflush.h> + +extern inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) +{ + free_page((unsigned long) pte); +} + +extern const char bad_pmd_string[]; + +extern inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, + unsigned long address) +{ + unsigned long page = __get_free_page(GFP_DMA|__GFP_REPEAT); + + if (!page) + return NULL; + + memset((void *)page, 0, PAGE_SIZE); + return (pte_t *) (page); +} + +extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address) +{ + return (pmd_t *) pgd; +} + +#define pmd_alloc_one_fast(mm, address) ({ BUG(); ((pmd_t *)1); }) +#define pmd_alloc_one(mm, address) ({ BUG(); ((pmd_t *)2); }) + +#define pte_alloc_one_fast(mm, addr) pte_alloc_one(mm, addr) + +#define pmd_populate(mm, pmd, page) (pmd_val(*pmd) = \ + (unsigned long)(page_address(page))) + +#define pmd_populate_kernel(mm, pmd, pte) (pmd_val(*pmd) = (unsigned long)(pte)) + +#define pmd_pgtable(pmd) pmd_page(pmd) + +static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page, + unsigned long address) +{ + __free_page(page); +} + +#define __pmd_free_tlb(tlb, pmd, address) do { } while (0) + +static inline struct page *pte_alloc_one(struct mm_struct *mm, + unsigned long address) +{ + struct page *page = alloc_pages(GFP_DMA|__GFP_REPEAT, 0); + pte_t *pte; + + if (!page) + return NULL; + + pte = kmap(page); + if (pte) { + clear_page(pte); + __flush_page_to_ram(pte); + flush_tlb_kernel_page(pte); + nocache_page(pte); + } + kunmap(page); + + return page; +} + +extern inline void pte_free(struct mm_struct *mm, struct page *page) +{ + __free_page(page); +} + +/* + * In our implementation, each pgd entry contains 1 pmd that is never allocated + * or freed. pgd_present is always 1, so this should never be called. -NL + */ +#define pmd_free(mm, pmd) BUG() + +static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) +{ + free_page((unsigned long) pgd); +} + +static inline pgd_t *pgd_alloc(struct mm_struct *mm) +{ + pgd_t *new_pgd; + + new_pgd = (pgd_t *)__get_free_page(GFP_DMA | __GFP_NOWARN); + if (!new_pgd) + return NULL; + memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE); + memset(new_pgd, 0, PAGE_OFFSET >> PGDIR_SHIFT); + return new_pgd; +} + +#define pgd_populate(mm, pmd, pte) BUG() + +#endif /* M68K_MCF_PGALLOC_H */ diff --git a/arch/m68k/include/asm/pgalloc.h b/arch/m68k/include/asm/pgalloc.h index c294aad8a900..37bee7e3223d 100644 --- a/arch/m68k/include/asm/pgalloc.h +++ b/arch/m68k/include/asm/pgalloc.h @@ -7,7 +7,9 @@ #ifdef CONFIG_MMU #include <asm/virtconvert.h> -#ifdef CONFIG_SUN3 +#if defined(CONFIG_COLDFIRE) +#include <asm/mcf_pgalloc.h> +#elif defined(CONFIG_SUN3) #include <asm/sun3_pgalloc.h> #else #include <asm/motorola_pgalloc.h> |