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62 lines
1.4 KiB
62 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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// Copyright (C) 2005-2017 Andes Technology Corporation |
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#ifndef _ASMNDS32_PGALLOC_H |
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#define _ASMNDS32_PGALLOC_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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#include <asm/proc-fns.h> |
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#define __HAVE_ARCH_PTE_ALLOC_ONE |
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#include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */ |
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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 * pgd); |
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static inline pgtable_t pte_alloc_one(struct mm_struct *mm) |
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{ |
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pgtable_t pte; |
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pte = __pte_alloc_one(mm, GFP_PGTABLE_USER); |
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if (pte) |
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cpu_dcache_wb_page((unsigned long)page_address(pte)); |
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return pte; |
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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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* Ensure that we always set both PMD entries. |
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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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unsigned long pte_ptr = (unsigned long)ptep; |
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unsigned long pmdval; |
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BUG_ON(mm != &init_mm); |
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/* |
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* The pmd must be loaded with the physical |
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* address of the PTE table |
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*/ |
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pmdval = __pa(pte_ptr) | _PAGE_KERNEL_TABLE; |
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set_pmd(pmdp, __pmd(pmdval)); |
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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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unsigned long pmdval; |
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BUG_ON(mm == &init_mm); |
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pmdval = page_to_pfn(ptep) << PAGE_SHIFT | _PAGE_USER_TABLE; |
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set_pmd(pmdp, __pmd(pmdval)); |
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} |
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#endif
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