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)
36 /* 64 bit always use 4 level table. */
37 typedef struct { __be64 pud; } pud_t;
38 #define __pud(x) ((pud_t) { cpu_to_be64(x) })
39 #define __pud_raw(x) ((pud_t) { (x) })
40 static inline unsigned long pud_val(pud_t x)
42 return be64_to_cpu(x.pud);
45 static inline __be64 pud_raw(pud_t x)
50 #endif /* CONFIG_PPC64 */
53 typedef struct { __be64 pgd; } pgd_t;
54 #define __pgd(x) ((pgd_t) { cpu_to_be64(x) })
55 #define __pgd_raw(x) ((pgd_t) { (x) })
56 static inline unsigned long pgd_val(pgd_t x)
58 return be64_to_cpu(x.pgd);
61 static inline __be64 pgd_raw(pgd_t x)
66 /* Page protection bits */
67 typedef struct { unsigned long pgprot; } pgprot_t;
68 #define pgprot_val(x) ((x).pgprot)
69 #define __pgprot(x) ((pgprot_t) { (x) })
72 * With hash config 64k pages additionally define a bigger "real PTE" type that
73 * gathers the "second half" part of the PTE for pseudo 64k pages
75 #ifdef CONFIG_PPC_64K_PAGES
76 typedef struct { pte_t pte; unsigned long hidx; } real_pte_t;
78 typedef struct { pte_t pte; } real_pte_t;
81 static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new)
83 unsigned long *p = (unsigned long *)ptep;
86 /* See comment in switch_mm_irqs_off() */
87 prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pte_raw(old),
88 (__force unsigned long)pte_raw(new));
90 return pte_raw(old) == prev;
93 static inline bool pmd_xchg(pmd_t *pmdp, pmd_t old, pmd_t new)
95 unsigned long *p = (unsigned long *)pmdp;
98 prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pmd_raw(old),
99 (__force unsigned long)pmd_raw(new));
101 return pmd_raw(old) == prev;
104 #ifdef CONFIG_ARCH_HAS_HUGEPD
105 typedef struct { __be64 pdbe; } hugepd_t;
106 #define __hugepd(x) ((hugepd_t) { cpu_to_be64(x) })
108 static inline unsigned long hpd_val(hugepd_t x)
110 return be64_to_cpu(x.pdbe);
114 #endif /* _ASM_POWERPC_PGTABLE_BE_TYPES_H */