1 #ifndef _ASM_POWERPC_PGTABLE_BE_TYPES_H 2 #define _ASM_POWERPC_PGTABLE_BE_TYPES_H 3 4 #include <asm/cmpxchg.h> 5 6 /* PTE level */ 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) 11 { 12 return be64_to_cpu(x.pte); 13 } 14 15 static inline __be64 pte_raw(pte_t x) 16 { 17 return x.pte; 18 } 19 20 /* PMD level */ 21 #ifdef CONFIG_PPC64 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) 26 { 27 return be64_to_cpu(x.pmd); 28 } 29 30 static inline __be64 pmd_raw(pmd_t x) 31 { 32 return x.pmd; 33 } 34 35 /* 36 * 64 bit hash always use 4 level table. Everybody else use 4 level 37 * only for 4K page size. 38 */ 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) 44 { 45 return be64_to_cpu(x.pud); 46 } 47 48 static inline __be64 pud_raw(pud_t x) 49 { 50 return x.pud; 51 } 52 53 #endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */ 54 #endif /* CONFIG_PPC64 */ 55 56 /* PGD level */ 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) 61 { 62 return be64_to_cpu(x.pgd); 63 } 64 65 static inline __be64 pgd_raw(pgd_t x) 66 { 67 return x.pgd; 68 } 69 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) }) 74 75 /* 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 78 */ 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; 81 #else 82 typedef struct { pte_t pte; } real_pte_t; 83 #endif 84 85 static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new) 86 { 87 unsigned long *p = (unsigned long *)ptep; 88 __be64 prev; 89 90 prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pte_raw(old), 91 (__force unsigned long)pte_raw(new)); 92 93 return pte_raw(old) == prev; 94 } 95 96 static inline bool pmd_xchg(pmd_t *pmdp, pmd_t old, pmd_t new) 97 { 98 unsigned long *p = (unsigned long *)pmdp; 99 __be64 prev; 100 101 prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pmd_raw(old), 102 (__force unsigned long)pmd_raw(new)); 103 104 return pmd_raw(old) == prev; 105 } 106 107 typedef struct { __be64 pdbe; } hugepd_t; 108 #define __hugepd(x) ((hugepd_t) { cpu_to_be64(x) }) 109 110 static inline unsigned long hpd_val(hugepd_t x) 111 { 112 return be64_to_cpu(x.pdbe); 113 } 114 115 #endif /* _ASM_POWERPC_PGTABLE_BE_TYPES_H */ 116