/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_POWERPC_PGTABLE_TYPES_H
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#define _ASM_POWERPC_PGTABLE_TYPES_H
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/* PTE level */
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#if defined(CONFIG_PPC_8xx) && defined(CONFIG_PPC_16K_PAGES)
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typedef struct { pte_basic_t pte, pte1, pte2, pte3; } pte_t;
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#else
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typedef struct { pte_basic_t pte; } pte_t;
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#endif
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#define __pte(x) ((pte_t) { (x) })
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static inline pte_basic_t pte_val(pte_t x)
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{
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return x.pte;
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}
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/* PMD level */
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#ifdef CONFIG_PPC64
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typedef struct { unsigned long pmd; } pmd_t;
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#define __pmd(x) ((pmd_t) { (x) })
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static inline unsigned long pmd_val(pmd_t x)
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{
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return x.pmd;
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}
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/* 64 bit always use 4 level table. */
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typedef struct { unsigned long pud; } pud_t;
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#define __pud(x) ((pud_t) { (x) })
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static inline unsigned long pud_val(pud_t x)
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{
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return x.pud;
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}
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#endif /* CONFIG_PPC64 */
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/* PGD level */
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typedef struct { unsigned long pgd; } pgd_t;
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#define __pgd(x) ((pgd_t) { (x) })
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static inline unsigned long pgd_val(pgd_t x)
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{
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return x.pgd;
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}
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/* Page protection bits */
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typedef struct { unsigned long pgprot; } pgprot_t;
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#define pgprot_val(x) ((x).pgprot)
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#define __pgprot(x) ((pgprot_t) { (x) })
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/*
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* With hash config 64k pages additionally define a bigger "real PTE" type that
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* gathers the "second half" part of the PTE for pseudo 64k pages
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*/
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#ifdef CONFIG_PPC_64K_PAGES
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typedef struct { pte_t pte; unsigned long hidx; } real_pte_t;
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#else
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typedef struct { pte_t pte; } real_pte_t;
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#endif
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#ifdef CONFIG_PPC_BOOK3S_64
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#include <asm/cmpxchg.h>
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static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new)
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{
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unsigned long *p = (unsigned long *)ptep;
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/* See comment in switch_mm_irqs_off() */
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return pte_val(old) == __cmpxchg_u64(p, pte_val(old), pte_val(new));
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}
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#endif
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typedef struct { unsigned long pd; } hugepd_t;
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#define __hugepd(x) ((hugepd_t) { (x) })
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static inline unsigned long hpd_val(hugepd_t x)
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{
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return x.pd;
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}
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#endif /* _ASM_POWERPC_PGTABLE_TYPES_H */
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