/* SPDX-License-Identifier: GPL-2.0-only *//* * linux/arch/unicore32/include/asm/pgalloc.h * * Code specific to PKUnity SoC and UniCore ISA * * Copyright (C) 2001-2010 GUAN Xue-tao */#ifndef __UNICORE_PGALLOC_H__#define __UNICORE_PGALLOC_H__ #include <asm/pgtable-hwdef.h>#include <asm/processor.h>#include <asm/cacheflush.h>#include <asm/tlbflush.h> #define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL#define __HAVE_ARCH_PTE_ALLOC_ONE#include <asm-generic/pgalloc.h> #define _PAGE_USER_TABLE	(PMD_TYPE_TABLE | PMD_PRESENT)#define _PAGE_KERNEL_TABLE	(PMD_TYPE_TABLE | PMD_PRESENT) extern pgd_t *get_pgd_slow(struct mm_struct *mm);extern void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd); #define pgd_alloc(mm)			get_pgd_slow(mm)#define pgd_free(mm, pgd)		free_pgd_slow(mm, pgd) /* * Allocate one PTE table. */static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm){	pte_t *pte = __pte_alloc_one_kernel(mm); 	if (pte)		clean_dcache_area(pte, PTRS_PER_PTE * sizeof(pte_t)); 	return pte;} static inline pgtable_tpte_alloc_one(struct mm_struct *mm){	struct page *pte; 	pte = __pte_alloc_one(mm, GFP_PGTABLE_USER);	if (!pte)		return NULL;	if (!PageHighMem(pte))		clean_pte_table(page_address(pte));	return pte;} static inline void __pmd_populate(pmd_t *pmdp, unsigned long pmdval){	set_pmd(pmdp, __pmd(pmdval));	flush_pmd_entry(pmdp);} /* * Populate the pmdp entry with a pointer to the pte.  This pmd is part * of the mm address space. */static inline voidpmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep){	unsigned long pte_ptr = (unsigned long)ptep; 	/*	 * The pmd must be loaded with the physical	 * address of the PTE table	 */	__pmd_populate(pmdp, __pa(pte_ptr) | _PAGE_KERNEL_TABLE);} static inline voidpmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep){	__pmd_populate(pmdp,			page_to_pfn(ptep) << PAGE_SHIFT | _PAGE_USER_TABLE);}#define pmd_pgtable(pmd) pmd_page(pmd) #endif