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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 */
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