1 /* 2 * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu> 3 * Copyright (C) 2008-2009 PetaLogix 4 * Copyright (C) 2006 Atmark Techno, Inc. 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file "COPYING" in the main directory of this archive 8 * for more details. 9 */ 10 11 #ifndef _ASM_MICROBLAZE_PGALLOC_H 12 #define _ASM_MICROBLAZE_PGALLOC_H 13 14 #ifdef CONFIG_MMU 15 16 #include <linux/kernel.h> /* For min/max macros */ 17 #include <linux/highmem.h> 18 #include <asm/setup.h> 19 #include <asm/io.h> 20 #include <asm/page.h> 21 #include <asm/cache.h> 22 #include <asm/pgtable.h> 23 24 #define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL 25 #include <asm-generic/pgalloc.h> 26 27 extern void __bad_pte(pmd_t *pmd); 28 29 static inline pgd_t *get_pgd(void) 30 { 31 return (pgd_t *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, 0); 32 } 33 34 static inline void free_pgd(pgd_t *pgd) 35 { 36 free_page((unsigned long)pgd); 37 } 38 39 #define pgd_free(mm, pgd) free_pgd(pgd) 40 #define pgd_alloc(mm) get_pgd() 41 42 #define pmd_pgtable(pmd) pmd_page(pmd) 43 44 extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm); 45 46 #define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte)) 47 48 #define pmd_populate(mm, pmd, pte) \ 49 (pmd_val(*(pmd)) = (unsigned long)page_address(pte)) 50 51 #define pmd_populate_kernel(mm, pmd, pte) \ 52 (pmd_val(*(pmd)) = (unsigned long) (pte)) 53 54 #endif /* CONFIG_MMU */ 55 56 #endif /* _ASM_MICROBLAZE_PGALLOC_H */ 57