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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-m68k/sun3_pgalloc.h | |
download | linux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-m68k/sun3_pgalloc.h')
-rw-r--r-- | include/asm-m68k/sun3_pgalloc.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/include/asm-m68k/sun3_pgalloc.h b/include/asm-m68k/sun3_pgalloc.h new file mode 100644 index 0000000..fd82411 --- /dev/null +++ b/include/asm-m68k/sun3_pgalloc.h @@ -0,0 +1,95 @@ +/* sun3_pgalloc.h -- + * reorganization around 2.3.39, routines moved from sun3_pgtable.h + * + * + * 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam) + * + * moved 1/26/2000 Sam Creasey + */ + +#ifndef _SUN3_PGALLOC_H +#define _SUN3_PGALLOC_H + +#include <asm/tlb.h> + +/* FIXME - when we get this compiling */ +/* erm, now that it's compiling, what do we do with it? */ +#define _KERNPG_TABLE 0 + +extern const char bad_pmd_string[]; + +#define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); }) + + +static inline void pte_free_kernel(pte_t * pte) +{ + free_page((unsigned long) pte); +} + +static inline void pte_free(struct page *page) +{ + __free_page(page); +} + +#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte)) + +static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, + unsigned long address) +{ + unsigned long page = __get_free_page(GFP_KERNEL|__GFP_REPEAT); + + if (!page) + return NULL; + + memset((void *)page, 0, PAGE_SIZE); + return (pte_t *) (page); +} + +static inline struct page *pte_alloc_one(struct mm_struct *mm, + unsigned long address) +{ + struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT, 0); + + if (page == NULL) + return NULL; + + clear_highpage(page); + return page; + +} + +static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) +{ + pmd_val(*pmd) = __pa((unsigned long)pte); +} + +static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *page) +{ + pmd_val(*pmd) = __pa((unsigned long)page_address(page)); +} + +/* + * allocating and freeing a pmd is trivial: the 1-entry pmd is + * inside the pgd, so has no extra memory associated with it. + */ +#define pmd_free(x) do { } while (0) +#define __pmd_free_tlb(tlb, x) do { } while (0) + +static inline void pgd_free(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_zeroed_page(GFP_KERNEL); + 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 /* SUN3_PGALLOC_H */ |