1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_POWERPC_PGTABLE_TYPES_H 3 #define _ASM_POWERPC_PGTABLE_TYPES_H 4 5 /* PTE level */ 6 typedef struct { pte_basic_t pte; } pte_t; 7 #define __pte(x) ((pte_t) { (x) }) pte_val(pte_t x)8static inline pte_basic_t pte_val(pte_t x) 9 { 10 return x.pte; 11 } 12 13 /* PMD level */ 14 #ifdef CONFIG_PPC64 15 typedef struct { unsigned long pmd; } pmd_t; 16 #define __pmd(x) ((pmd_t) { (x) }) pmd_val(pmd_t x)17static inline unsigned long pmd_val(pmd_t x) 18 { 19 return x.pmd; 20 } 21 22 /* 23 * 64 bit hash always use 4 level table. Everybody else use 4 level 24 * only for 4K page size. 25 */ 26 #if defined(CONFIG_PPC_BOOK3S_64) || !defined(CONFIG_PPC_64K_PAGES) 27 typedef struct { unsigned long pud; } pud_t; 28 #define __pud(x) ((pud_t) { (x) }) pud_val(pud_t x)29static inline unsigned long pud_val(pud_t x) 30 { 31 return x.pud; 32 } 33 #endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */ 34 #endif /* CONFIG_PPC64 */ 35 36 /* PGD level */ 37 typedef struct { unsigned long pgd; } pgd_t; 38 #define __pgd(x) ((pgd_t) { (x) }) pgd_val(pgd_t x)39static inline unsigned long pgd_val(pgd_t x) 40 { 41 return x.pgd; 42 } 43 44 /* Page protection bits */ 45 typedef struct { unsigned long pgprot; } pgprot_t; 46 #define pgprot_val(x) ((x).pgprot) 47 #define __pgprot(x) ((pgprot_t) { (x) }) 48 49 /* 50 * With hash config 64k pages additionally define a bigger "real PTE" type that 51 * gathers the "second half" part of the PTE for pseudo 64k pages 52 */ 53 #if defined(CONFIG_PPC_64K_PAGES) && defined(CONFIG_PPC_STD_MMU_64) 54 typedef struct { pte_t pte; unsigned long hidx; } real_pte_t; 55 #else 56 typedef struct { pte_t pte; } real_pte_t; 57 #endif 58 59 #ifdef CONFIG_PPC_STD_MMU_64 60 #include <asm/cmpxchg.h> 61 pte_xchg(pte_t * ptep,pte_t old,pte_t new)62static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new) 63 { 64 unsigned long *p = (unsigned long *)ptep; 65 66 /* See comment in switch_mm_irqs_off() */ 67 return pte_val(old) == __cmpxchg_u64(p, pte_val(old), pte_val(new)); 68 } 69 #endif 70 71 typedef struct { unsigned long pd; } hugepd_t; 72 #define __hugepd(x) ((hugepd_t) { (x) }) hpd_val(hugepd_t x)73static inline unsigned long hpd_val(hugepd_t x) 74 { 75 return x.pd; 76 } 77 78 #endif /* _ASM_POWERPC_PGTABLE_TYPES_H */ 79