1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_POWERPC_PGTABLE_BE_TYPES_H #define _ASM_POWERPC_PGTABLE_BE_TYPES_H #include <asm/cmpxchg.h> /* PTE level */ typedef struct { __be64 pte; } pte_t; #define __pte(x) ((pte_t) { cpu_to_be64(x) }) #define __pte_raw(x) ((pte_t) { (x) }) static inline unsigned long pte_val(pte_t x) { return be64_to_cpu(x.pte); } static inline __be64 pte_raw(pte_t x) { return x.pte; } /* PMD level */ #ifdef [31mCONFIG_PPC64[0m typedef struct { __be64 pmd; } pmd_t; #define __pmd(x) ((pmd_t) { cpu_to_be64(x) }) #define __pmd_raw(x) ((pmd_t) { (x) }) static inline unsigned long pmd_val(pmd_t x) { return be64_to_cpu(x.pmd); } static inline __be64 pmd_raw(pmd_t x) { return x.pmd; } /* 64 bit always use 4 level table. */ typedef struct { __be64 pud; } pud_t; #define __pud(x) ((pud_t) { cpu_to_be64(x) }) #define __pud_raw(x) ((pud_t) { (x) }) static inline unsigned long pud_val(pud_t x) { return be64_to_cpu(x.pud); } static inline __be64 pud_raw(pud_t x) { return x.pud; } #endif /* CONFIG_PPC64 */ /* PGD level */ typedef struct { __be64 pgd; } pgd_t; #define __pgd(x) ((pgd_t) { cpu_to_be64(x) }) #define __pgd_raw(x) ((pgd_t) { (x) }) static inline unsigned long pgd_val(pgd_t x) { return be64_to_cpu(x.pgd); } static inline __be64 pgd_raw(pgd_t x) { return x.pgd; } /* Page protection bits */ typedef struct { unsigned long pgprot; } pgprot_t; #define pgprot_val(x) ((x).pgprot) #define __pgprot(x) ((pgprot_t) { (x) }) /* * With hash config 64k pages additionally define a bigger "real PTE" type that * gathers the "second half" part of the PTE for pseudo 64k pages */ #ifdef [31mCONFIG_PPC_64K_PAGES[0m typedef struct { pte_t pte; unsigned long hidx; } real_pte_t; #else typedef struct { pte_t pte; } real_pte_t; #endif static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new) { unsigned long *p = (unsigned long *)ptep; __be64 prev; /* See comment in switch_mm_irqs_off() */ prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pte_raw(old), (__force unsigned long)pte_raw(new)); return pte_raw(old) == prev; } static inline bool pmd_xchg(pmd_t *pmdp, pmd_t old, pmd_t new) { unsigned long *p = (unsigned long *)pmdp; __be64 prev; prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pmd_raw(old), (__force unsigned long)pmd_raw(new)); return pmd_raw(old) == prev; } typedef struct { __be64 pdbe; } hugepd_t; #define __hugepd(x) ((hugepd_t) { cpu_to_be64(x) }) static inline unsigned long hpd_val(hugepd_t x) { return be64_to_cpu(x.pdbe); } #endif /* _ASM_POWERPC_PGTABLE_BE_TYPES_H */ |