| /* 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 */ |