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 #if defined(CONFIG_PPC_8xx) && defined(CONFIG_PPC_16K_PAGES) 7 typedef struct { pte_basic_t pte, pte1, pte2, pte3; } pte_t; 8 #else 9 typedef struct { pte_basic_t pte; } pte_t; 10 #endif 11 #define __pte(x) ((pte_t) { (x) }) pte_val(pte_t x)12static inline pte_basic_t pte_val(pte_t x) 13 { 14 return x.pte; 15 } 16 17 /* PMD level */ 18 #ifdef CONFIG_PPC64 19 typedef struct { unsigned long pmd; } pmd_t; 20 #define __pmd(x) ((pmd_t) { (x) }) pmd_val(pmd_t x)21static inline unsigned long pmd_val(pmd_t x) 22 { 23 return x.pmd; 24 } 25 26 /* 64 bit always use 4 level table. */ 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_PPC64 */ 34 35 /* PGD level */ 36 typedef struct { unsigned long pgd; } pgd_t; 37 #define __pgd(x) ((pgd_t) { (x) }) pgd_val(pgd_t x)38static inline unsigned long pgd_val(pgd_t x) 39 { 40 return x.pgd; 41 } 42 43 /* Page protection bits */ 44 typedef struct { unsigned long pgprot; } pgprot_t; 45 #define pgprot_val(x) ((x).pgprot) 46 #define __pgprot(x) ((pgprot_t) { (x) }) 47 48 /* 49 * With hash config 64k pages additionally define a bigger "real PTE" type that 50 * gathers the "second half" part of the PTE for pseudo 64k pages 51 */ 52 #ifdef CONFIG_PPC_64K_PAGES 53 typedef struct { pte_t pte; unsigned long hidx; } real_pte_t; 54 #else 55 typedef struct { pte_t pte; } real_pte_t; 56 #endif 57 58 #ifdef CONFIG_PPC_BOOK3S_64 59 #include <asm/cmpxchg.h> 60 pte_xchg(pte_t * ptep,pte_t old,pte_t new)61static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new) 62 { 63 unsigned long *p = (unsigned long *)ptep; 64 65 /* See comment in switch_mm_irqs_off() */ 66 return pte_val(old) == __cmpxchg_u64(p, pte_val(old), pte_val(new)); 67 } 68 #endif 69 70 typedef struct { unsigned long pd; } hugepd_t; 71 #define __hugepd(x) ((hugepd_t) { (x) }) hpd_val(hugepd_t x)72static inline unsigned long hpd_val(hugepd_t x) 73 { 74 return x.pd; 75 } 76 77 #endif /* _ASM_POWERPC_PGTABLE_TYPES_H */ 78