1 #ifndef _ASM_POWERPC_PGTABLE_BE_TYPES_H
2 #define _ASM_POWERPC_PGTABLE_BE_TYPES_H
4 #include <asm/cmpxchg.h>
7 typedef struct { __be64 pte; } pte_t;
8 #define __pte(x) ((pte_t) { cpu_to_be64(x) })
9 #define __pte_raw(x) ((pte_t) { (x) })
10 static inline unsigned long pte_val(pte_t x)
12 return be64_to_cpu(x.pte);
15 static inline __be64 pte_raw(pte_t x)
22 typedef struct { __be64 pmd; } pmd_t;
23 #define __pmd(x) ((pmd_t) { cpu_to_be64(x) })
24 #define __pmd_raw(x) ((pmd_t) { (x) })
25 static inline unsigned long pmd_val(pmd_t x)
27 return be64_to_cpu(x.pmd);
30 static inline __be64 pmd_raw(pmd_t x)
36 * 64 bit hash always use 4 level table. Everybody else use 4 level
37 * only for 4K page size.
39 #if defined(CONFIG_PPC_BOOK3S_64) || !defined(CONFIG_PPC_64K_PAGES)
40 typedef struct { __be64 pud; } pud_t;
41 #define __pud(x) ((pud_t) { cpu_to_be64(x) })
42 #define __pud_raw(x) ((pud_t) { (x) })
43 static inline unsigned long pud_val(pud_t x)
45 return be64_to_cpu(x.pud);
48 static inline __be64 pud_raw(pud_t x)
53 #endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */
54 #endif /* CONFIG_PPC64 */
57 typedef struct { __be64 pgd; } pgd_t;
58 #define __pgd(x) ((pgd_t) { cpu_to_be64(x) })
59 #define __pgd_raw(x) ((pgd_t) { (x) })
60 static inline unsigned long pgd_val(pgd_t x)
62 return be64_to_cpu(x.pgd);
65 static inline __be64 pgd_raw(pgd_t x)
70 /* Page protection bits */
71 typedef struct { unsigned long pgprot; } pgprot_t;
72 #define pgprot_val(x) ((x).pgprot)
73 #define __pgprot(x) ((pgprot_t) { (x) })
76 * With hash config 64k pages additionally define a bigger "real PTE" type that
77 * gathers the "second half" part of the PTE for pseudo 64k pages
79 #if defined(CONFIG_PPC_64K_PAGES) && defined(CONFIG_PPC_STD_MMU_64)
80 typedef struct { pte_t pte; unsigned long hidx; } real_pte_t;
82 typedef struct { pte_t pte; } real_pte_t;
85 static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new)
87 unsigned long *p = (unsigned long *)ptep;
90 prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pte_raw(old),
91 (__force unsigned long)pte_raw(new));
93 return pte_raw(old) == prev;
96 static inline bool pmd_xchg(pmd_t *pmdp, pmd_t old, pmd_t new)
98 unsigned long *p = (unsigned long *)pmdp;
101 prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pmd_raw(old),
102 (__force unsigned long)pmd_raw(new));
104 return pmd_raw(old) == prev;
107 #endif /* _ASM_POWERPC_PGTABLE_BE_TYPES_H */