/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Page table types definitions.
 *
 * Copyright (C) 2014 ARM Ltd.
 * Author: Catalin Marinas <catalin.marinas@arm.com>
 */

#ifndef __ASM_PGTABLE_TYPES_H
#define __ASM_PGTABLE_TYPES_H

#include <asm/types.h>

/*
 * Page Table Descriptor
 *
 * Generic page table descriptor format from which
 * all level specific descriptors can be derived.
 */
typedef u64 ptdesc_t;

typedef ptdesc_t pteval_t;
typedef ptdesc_t pmdval_t;
typedef ptdesc_t pudval_t;
typedef ptdesc_t p4dval_t;
typedef ptdesc_t pgdval_t;

/*
 * These are used to make use of C type-checking..
 */
typedef struct { pteval_t pte; } pte_t;
#define pte_val(x)      ((x).pte)
#define __pte(x)        ((pte_t) { (x) } )

#if CONFIG_PGTABLE_LEVELS > 2
typedef struct { pmdval_t pmd; } pmd_t;
#define pmd_val(x)      ((x).pmd)
#define __pmd(x)        ((pmd_t) { (x) } )
#endif

#if CONFIG_PGTABLE_LEVELS > 3
typedef struct { pudval_t pud; } pud_t;
#define pud_val(x)      ((x).pud)
#define __pud(x)        ((pud_t) { (x) } )
#endif

#if CONFIG_PGTABLE_LEVELS > 4
typedef struct { p4dval_t p4d; } p4d_t;
#define p4d_val(x)      ((x).p4d)
#define __p4d(x)        ((p4d_t) { (x) } )
#endif

typedef struct { pgdval_t pgd; } pgd_t;
#define pgd_val(x)      ((x).pgd)
#define __pgd(x)        ((pgd_t) { (x) } )

typedef struct { ptdesc_t pgprot; } pgprot_t;
#define pgprot_val(x)   ((x).pgprot)
#define __pgprot(x)     ((pgprot_t) { (x) } )

#if CONFIG_PGTABLE_LEVELS == 2
#include <asm-generic/pgtable-nopmd.h>
#elif CONFIG_PGTABLE_LEVELS == 3
#include <asm-generic/pgtable-nopud.h>
#elif CONFIG_PGTABLE_LEVELS == 4
#include <asm-generic/pgtable-nop4d.h>
#endif

#endif  /* __ASM_PGTABLE_TYPES_H */