1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_PGTABLE_TYPES_H
3 #define _ASM_POWERPC_PGTABLE_TYPES_H
6 #if defined(CONFIG_PPC_8xx) && defined(CONFIG_PPC_16K_PAGES)
7 typedef struct { pte_basic_t pte, pte1, pte2, pte3; } pte_t;
9 typedef struct { pte_basic_t pte; } pte_t;
11 #define __pte(x) ((pte_t) { (x) })
12 static inline pte_basic_t pte_val(pte_t x)
19 typedef struct { unsigned long pmd; } pmd_t;
20 #define __pmd(x) ((pmd_t) { (x) })
21 static inline unsigned long pmd_val(pmd_t x)
27 * 64 bit hash always use 4 level table. Everybody else use 4 level
28 * only for 4K page size.
30 #if defined(CONFIG_PPC_BOOK3S_64) || !defined(CONFIG_PPC_64K_PAGES)
31 typedef struct { unsigned long pud; } pud_t;
32 #define __pud(x) ((pud_t) { (x) })
33 static inline unsigned long pud_val(pud_t x)
37 #endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */
38 #endif /* CONFIG_PPC64 */
41 typedef struct { unsigned long pgd; } pgd_t;
42 #define __pgd(x) ((pgd_t) { (x) })
43 static inline unsigned long pgd_val(pgd_t x)
48 /* Page protection bits */
49 typedef struct { unsigned long pgprot; } pgprot_t;
50 #define pgprot_val(x) ((x).pgprot)
51 #define __pgprot(x) ((pgprot_t) { (x) })
54 * With hash config 64k pages additionally define a bigger "real PTE" type that
55 * gathers the "second half" part of the PTE for pseudo 64k pages
57 #if defined(CONFIG_PPC_64K_PAGES) && defined(CONFIG_PPC_BOOK3S_64)
58 typedef struct { pte_t pte; unsigned long hidx; } real_pte_t;
60 typedef struct { pte_t pte; } real_pte_t;
63 #ifdef CONFIG_PPC_BOOK3S_64
64 #include <asm/cmpxchg.h>
66 static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new)
68 unsigned long *p = (unsigned long *)ptep;
70 /* See comment in switch_mm_irqs_off() */
71 return pte_val(old) == __cmpxchg_u64(p, pte_val(old), pte_val(new));
75 typedef struct { unsigned long pd; } hugepd_t;
76 #define __hugepd(x) ((hugepd_t) { (x) })
77 static inline unsigned long hpd_val(hugepd_t x)
82 #endif /* _ASM_POWERPC_PGTABLE_TYPES_H */