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/*
* Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
* Copyright (C) 2008-2009 PetaLogix
* Copyright (C) 2006 Atmark Techno, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef _ASM_MICROBLAZE_PGALLOC_H
#define _ASM_MICROBLAZE_PGALLOC_H
#ifdef CONFIG_MMU
#include <linux/kernel.h> /* For min/max macros */
#include <linux/highmem.h>
#include <asm/setup.h>
#include <asm/io.h>
#include <asm/page.h>
#include <asm/cache.h>
#include <asm/pgtable.h>
#define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL
#include <asm-generic/pgalloc.h>
extern void __bad_pte(pmd_t *pmd);
static inline pgd_t *get_pgd(void)
{
return (pgd_t *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, 0);
}
static inline void free_pgd(pgd_t *pgd)
{
free_page((unsigned long)pgd);
}
#define pgd_free(mm, pgd) free_pgd(pgd)
#define pgd_alloc(mm) get_pgd()
#define pmd_pgtable(pmd) pmd_page(pmd)
/*
* We don't have any real pmd's, and this code never triggers because
* the pgd will always be present..
*/
#define pmd_alloc_one_fast(mm, address) ({ BUG(); ((pmd_t *)1); })
#define pmd_alloc_one(mm, address) ({ BUG(); ((pmd_t *)2); })
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte))
#define pmd_populate(mm, pmd, pte) \
(pmd_val(*(pmd)) = (unsigned long)page_address(pte))
#define pmd_populate_kernel(mm, pmd, pte) \
(pmd_val(*(pmd)) = (unsigned long) (pte))
/*
* We don't have any real pmd's, and this code never triggers because
* the pgd will always be present..
*/
#define pmd_alloc_one(mm, address) ({ BUG(); ((pmd_t *)2); })
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb, x, addr) pmd_free((tlb)->mm, x)
#define pgd_populate(mm, pmd, pte) BUG()
#endif /* CONFIG_MMU */
#endif /* _ASM_MICROBLAZE_PGALLOC_H */