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86 lines
2.1 KiB
86 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Based on arch/arm/include/asm/pgalloc.h |
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* |
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* Copyright (C) 2000-2001 Russell King |
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* Copyright (C) 2012 ARM Ltd. |
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*/ |
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#ifndef __ASM_PGALLOC_H |
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#define __ASM_PGALLOC_H |
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#include <asm/pgtable-hwdef.h> |
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#include <asm/processor.h> |
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#include <asm/cacheflush.h> |
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#include <asm/tlbflush.h> |
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#define __HAVE_ARCH_PGD_FREE |
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#include <asm-generic/pgalloc.h> |
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#define PGD_SIZE (PTRS_PER_PGD * sizeof(pgd_t)) |
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#if CONFIG_PGTABLE_LEVELS > 2 |
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static inline void __pud_populate(pud_t *pudp, phys_addr_t pmdp, pudval_t prot) |
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{ |
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set_pud(pudp, __pud(__phys_to_pud_val(pmdp) | prot)); |
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} |
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static inline void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmdp) |
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{ |
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__pud_populate(pudp, __pa(pmdp), PMD_TYPE_TABLE); |
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} |
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#else |
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static inline void __pud_populate(pud_t *pudp, phys_addr_t pmdp, pudval_t prot) |
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{ |
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BUILD_BUG(); |
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} |
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#endif /* CONFIG_PGTABLE_LEVELS > 2 */ |
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#if CONFIG_PGTABLE_LEVELS > 3 |
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static inline void __p4d_populate(p4d_t *p4dp, phys_addr_t pudp, p4dval_t prot) |
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{ |
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set_p4d(p4dp, __p4d(__phys_to_p4d_val(pudp) | prot)); |
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} |
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static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4dp, pud_t *pudp) |
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{ |
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__p4d_populate(p4dp, __pa(pudp), PUD_TYPE_TABLE); |
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} |
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#else |
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static inline void __p4d_populate(p4d_t *p4dp, phys_addr_t pudp, p4dval_t prot) |
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{ |
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BUILD_BUG(); |
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} |
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#endif /* CONFIG_PGTABLE_LEVELS > 3 */ |
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extern pgd_t *pgd_alloc(struct mm_struct *mm); |
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extern void pgd_free(struct mm_struct *mm, pgd_t *pgdp); |
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static inline void __pmd_populate(pmd_t *pmdp, phys_addr_t ptep, |
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pmdval_t prot) |
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{ |
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set_pmd(pmdp, __pmd(__phys_to_pmd_val(ptep) | prot)); |
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} |
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/* |
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* Populate the pmdp entry with a pointer to the pte. This pmd is part |
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* of the mm address space. |
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*/ |
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static inline void |
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pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep) |
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{ |
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/* |
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* The pmd must be loaded with the physical address of the PTE table |
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*/ |
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__pmd_populate(pmdp, __pa(ptep), PMD_TYPE_TABLE); |
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} |
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static inline void |
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pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep) |
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{ |
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__pmd_populate(pmdp, page_to_phys(ptep), PMD_TYPE_TABLE); |
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} |
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#define pmd_pgtable(pmd) pmd_page(pmd) |
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#endif
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