1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_PGTABLE_BE_TYPES_H
3 #define _ASM_POWERPC_PGTABLE_BE_TYPES_H
5 #include <asm/cmpxchg.h>
8 typedef struct { __be64 pte; } pte_t;
9 #define __pte(x) ((pte_t) { cpu_to_be64(x) })
10 #define __pte_raw(x) ((pte_t) { (x) })
11 static inline unsigned long pte_val(pte_t x)
13 return be64_to_cpu(x.pte);
16 static inline __be64 pte_raw(pte_t x)
23 typedef struct { __be64 pmd; } pmd_t;
24 #define __pmd(x) ((pmd_t) { cpu_to_be64(x) })
25 #define __pmd_raw(x) ((pmd_t) { (x) })
26 static inline unsigned long pmd_val(pmd_t x)
28 return be64_to_cpu(x.pmd);
31 static inline __be64 pmd_raw(pmd_t x)
37 * 64 bit hash always use 4 level table. Everybody else use 4 level
38 * only for 4K page size.
40 #if defined(CONFIG_PPC_BOOK3S_64) || !defined(CONFIG_PPC_64K_PAGES)
41 typedef struct { __be64 pud; } pud_t;
42 #define __pud(x) ((pud_t) { cpu_to_be64(x) })
43 #define __pud_raw(x) ((pud_t) { (x) })
44 static inline unsigned long pud_val(pud_t x)
46 return be64_to_cpu(x.pud);
49 static inline __be64 pud_raw(pud_t x)
54 #endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */
55 #endif /* CONFIG_PPC64 */
58 typedef struct { __be64 pgd; } pgd_t;
59 #define __pgd(x) ((pgd_t) { cpu_to_be64(x) })
60 #define __pgd_raw(x) ((pgd_t) { (x) })
61 static inline unsigned long pgd_val(pgd_t x)
63 return be64_to_cpu(x.pgd);
66 static inline __be64 pgd_raw(pgd_t x)
71 /* Page protection bits */
72 typedef struct { unsigned long pgprot; } pgprot_t;
73 #define pgprot_val(x) ((x).pgprot)
74 #define __pgprot(x) ((pgprot_t) { (x) })
77 * With hash config 64k pages additionally define a bigger "real PTE" type that
78 * gathers the "second half" part of the PTE for pseudo 64k pages
80 #if defined(CONFIG_PPC_64K_PAGES) && defined(CONFIG_PPC_BOOK3S_64)
81 typedef struct { pte_t pte; unsigned long hidx; } real_pte_t;
83 typedef struct { pte_t pte; } real_pte_t;
86 static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new)
88 unsigned long *p = (unsigned long *)ptep;
91 /* See comment in switch_mm_irqs_off() */
92 prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pte_raw(old),
93 (__force unsigned long)pte_raw(new));
95 return pte_raw(old) == prev;
98 static inline bool pmd_xchg(pmd_t *pmdp, pmd_t old, pmd_t new)
100 unsigned long *p = (unsigned long *)pmdp;
103 prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pmd_raw(old),
104 (__force unsigned long)pmd_raw(new));
106 return pmd_raw(old) == prev;
109 typedef struct { __be64 pdbe; } hugepd_t;
110 #define __hugepd(x) ((hugepd_t) { cpu_to_be64(x) })
112 static inline unsigned long hpd_val(hugepd_t x)
114 return be64_to_cpu(x.pdbe);
117 #endif /* _ASM_POWERPC_PGTABLE_BE_TYPES_H */