1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_PGTABLE_TYPES_H
3 #define _ASM_POWERPC_PGTABLE_TYPES_H
6 typedef struct { pte_basic_t pte; } pte_t;
7 #define __pte(x) ((pte_t) { (x) })
8 static inline pte_basic_t pte_val(pte_t x)
15 typedef struct { unsigned long pmd; } pmd_t;
16 #define __pmd(x) ((pmd_t) { (x) })
17 static inline unsigned long pmd_val(pmd_t x)
23 * 64 bit hash always use 4 level table. Everybody else use 4 level
24 * only for 4K page size.
26 #if defined(CONFIG_PPC_BOOK3S_64) || !defined(CONFIG_PPC_64K_PAGES)
27 typedef struct { unsigned long pud; } pud_t;
28 #define __pud(x) ((pud_t) { (x) })
29 static inline unsigned long pud_val(pud_t x)
33 #endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */
34 #endif /* CONFIG_PPC64 */
37 typedef struct { unsigned long pgd; } pgd_t;
38 #define __pgd(x) ((pgd_t) { (x) })
39 static inline unsigned long pgd_val(pgd_t x)
44 /* Page protection bits */
45 typedef struct { unsigned long pgprot; } pgprot_t;
46 #define pgprot_val(x) ((x).pgprot)
47 #define __pgprot(x) ((pgprot_t) { (x) })
50 * With hash config 64k pages additionally define a bigger "real PTE" type that
51 * gathers the "second half" part of the PTE for pseudo 64k pages
53 #if defined(CONFIG_PPC_64K_PAGES) && defined(CONFIG_PPC_BOOK3S_64)
54 typedef struct { pte_t pte; unsigned long hidx; } real_pte_t;
56 typedef struct { pte_t pte; } real_pte_t;
59 #ifdef CONFIG_PPC_BOOK3S_64
60 #include <asm/cmpxchg.h>
62 static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new)
64 unsigned long *p = (unsigned long *)ptep;
66 /* See comment in switch_mm_irqs_off() */
67 return pte_val(old) == __cmpxchg_u64(p, pte_val(old), pte_val(new));
71 typedef struct { unsigned long pd; } hugepd_t;
72 #define __hugepd(x) ((hugepd_t) { (x) })
73 static inline unsigned long hpd_val(hugepd_t x)
78 #endif /* _ASM_POWERPC_PGTABLE_TYPES_H */