| /* MN10300 Page and page table/directory allocation | |
| * | |
| * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | |
| * Written by David Howells (dhowells@redhat.com) | |
| * | |
| * This program is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU General Public Licence | |
| * as published by the Free Software Foundation; either version | |
| * 2 of the Licence, or (at your option) any later version. | |
| */ | |
| #ifndef _ASM_PGALLOC_H | |
| #define _ASM_PGALLOC_H | |
| #include <asm/processor.h> | |
| #include <asm/page.h> | |
| #include <linux/threads.h> | |
| #include <linux/mm.h> /* for struct page */ | |
| struct mm_struct; | |
| struct page; | |
| /* attach a page table to a PMD entry */ | |
| #define pmd_populate_kernel(mm, pmd, pte) \ | |
| set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE)) | |
| static inline | |
| void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte) | |
| { | |
| set_pmd(pmd, __pmd((page_to_pfn(pte) << PAGE_SHIFT) | _PAGE_TABLE)); | |
| } | |
| #define pmd_pgtable(pmd) pmd_page(pmd) | |
| /* | |
| * Allocate and free page tables. | |
| */ | |
| extern pgd_t *pgd_alloc(struct mm_struct *); | |
| extern void pgd_free(struct mm_struct *, pgd_t *); | |
| extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long); | |
| extern struct page *pte_alloc_one(struct mm_struct *, unsigned long); | |
| static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) | |
| { | |
| free_page((unsigned long) pte); | |
| } | |
| static inline void pte_free(struct mm_struct *mm, struct page *pte) | |
| { | |
| __free_page(pte); | |
| } | |
| #define __pte_free_tlb(tlb, pte) tlb_remove_page((tlb), (pte)) | |
| #endif /* _ASM_PGALLOC_H */ |