1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu> 4 * Copyright (C) 2008-2009 PetaLogix 5 * Copyright (C) 2006 Atmark Techno, Inc. 6 */ 7 8 #ifndef _ASM_MICROBLAZE_PGALLOC_H 9 #define _ASM_MICROBLAZE_PGALLOC_H 10 11 #ifdef CONFIG_MMU 12 13 #include <linux/kernel.h> /* For min/max macros */ 14 #include <linux/highmem.h> 15 #include <linux/pgtable.h> 16 #include <asm/setup.h> 17 #include <asm/io.h> 18 #include <asm/page.h> 19 #include <asm/cache.h> 20 21 #define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL 22 #include <asm-generic/pgalloc.h> 23 24 extern void __bad_pte(pmd_t *pmd); 25 26 static inline pgd_t *get_pgd(void) 27 { 28 return (pgd_t *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, 0); 29 } 30 31 static inline void free_pgd(pgd_t *pgd) 32 { 33 free_page((unsigned long)pgd); 34 } 35 36 #define pgd_free(mm, pgd) free_pgd(pgd) 37 #define pgd_alloc(mm) get_pgd() 38 39 #define pmd_pgtable(pmd) pmd_page(pmd) 40 41 extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm); 42 43 #define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte)) 44 45 #define pmd_populate(mm, pmd, pte) \ 46 (pmd_val(*(pmd)) = (unsigned long)page_address(pte)) 47 48 #define pmd_populate_kernel(mm, pmd, pte) \ 49 (pmd_val(*(pmd)) = (unsigned long) (pte)) 50 51 #endif /* CONFIG_MMU */ 52 53 #endif /* _ASM_MICROBLAZE_PGALLOC_H */ 54