Linux kernel mirror (for testing)
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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 <asm/setup.h>
16#include <asm/io.h>
17#include <asm/page.h>
18#include <asm/cache.h>
19#include <asm/pgtable.h>
20
21#define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL
22#include <asm-generic/pgalloc.h>
23
24extern void __bad_pte(pmd_t *pmd);
25
26static inline pgd_t *get_pgd(void)
27{
28 return (pgd_t *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, 0);
29}
30
31static 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
41extern 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 */