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/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2005-2017 Andes Technology Corporation
#ifndef _ASMNDS32_PGALLOC_H
#define _ASMNDS32_PGALLOC_H
#include <asm/processor.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
#include <asm/proc-fns.h>
#define __HAVE_ARCH_PTE_ALLOC_ONE
#include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */
extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(struct mm_struct *mm, pgd_t * pgd);
static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
{
pgtable_t pte;
pte = __pte_alloc_one(mm, GFP_PGTABLE_USER);
if (pte)
cpu_dcache_wb_page((unsigned long)page_address(pte));
return pte;
}
/*
* Populate the pmdp entry with a pointer to the pte. This pmd is part
* of the mm address space.
*
* Ensure that we always set both PMD entries.
*/
static inline void
pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmdp, pte_t * ptep)
{
unsigned long pte_ptr = (unsigned long)ptep;
unsigned long pmdval;
BUG_ON(mm != &init_mm);
/*
* The pmd must be loaded with the physical
* address of the PTE table
*/
pmdval = __pa(pte_ptr) | _PAGE_KERNEL_TABLE;
set_pmd(pmdp, __pmd(pmdval));
}
static inline void
pmd_populate(struct mm_struct *mm, pmd_t * pmdp, pgtable_t ptep)
{
unsigned long pmdval;
BUG_ON(mm == &init_mm);
pmdval = page_to_pfn(ptep) << PAGE_SHIFT | _PAGE_USER_TABLE;
set_pmd(pmdp, __pmd(pmdval));
}
#endif