Orange Pi5 kernel

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