projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2bf59916 AK |
2 | #ifndef _ASM_POWERPC_PGTABLE_TYPES_H |
| 3 | #define _ASM_POWERPC_PGTABLE_TYPES_H | |
| 4 | ||
| 2bf59916 | 5 | /* PTE level */ |
| 55c8fc3f CL |
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 | |
| 2bf59916 | 9 | typedef struct { pte_basic_t pte; } pte_t; |
| 55c8fc3f | 10 | #endif |
| 2bf59916 AK |
11 | #define __pte(x) ((pte_t) { (x) }) |
| 12 | static inline pte_basic_t pte_val(pte_t x) | |
| 13 | { | |
| 14 | return x.pte; | |
| 15 | } | |
| 16 | ||
| 2bf59916 AK |
17 | /* PMD level */ |
| 18 | #ifdef CONFIG_PPC64 | |
| 19 | typedef struct { unsigned long pmd; } pmd_t; | |
| 20 | #define __pmd(x) ((pmd_t) { (x) }) | |
| 21 | static inline unsigned long pmd_val(pmd_t x) | |
| 22 | { | |
| 23 | return x.pmd; | |
| 24 | } | |
| 25 | ||
| 368ced78 AK |
26 | /* |
| 27 | * 64 bit hash always use 4 level table. Everybody else use 4 level | |
| 28 | * only for 4K page size. | |
| 29 | */ | |
| 30 | #if defined(CONFIG_PPC_BOOK3S_64) || !defined(CONFIG_PPC_64K_PAGES) | |
| 2bf59916 AK |
31 | typedef struct { unsigned long pud; } pud_t; |
| 32 | #define __pud(x) ((pud_t) { (x) }) | |
| 33 | static inline unsigned long pud_val(pud_t x) | |
| 34 | { | |
| 35 | return x.pud; | |
| 36 | } | |
| 368ced78 | 37 | #endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */ |
| 2bf59916 AK |
38 | #endif /* CONFIG_PPC64 */ |
| 39 | ||
| 40 | /* PGD level */ | |
| 41 | typedef struct { unsigned long pgd; } pgd_t; | |
| 42 | #define __pgd(x) ((pgd_t) { (x) }) | |
| 43 | static inline unsigned long pgd_val(pgd_t x) | |
| 44 | { | |
| 45 | return x.pgd; | |
| 46 | } | |
| 47 | ||
| 48 | /* Page protection bits */ | |
| 49 | typedef struct { unsigned long pgprot; } pgprot_t; | |
| 50 | #define pgprot_val(x) ((x).pgprot) | |
| 51 | #define __pgprot(x) ((pgprot_t) { (x) }) | |
| 52 | ||
| ae9a71af AK |
53 | /* |
| 54 | * With hash config 64k pages additionally define a bigger "real PTE" type that | |
| 55 | * gathers the "second half" part of the PTE for pseudo 64k pages | |
| 56 | */ | |
| 4e003747 | 57 | #if defined(CONFIG_PPC_64K_PAGES) && defined(CONFIG_PPC_BOOK3S_64) |
| ae9a71af AK |
58 | typedef struct { pte_t pte; unsigned long hidx; } real_pte_t; |
| 59 | #else | |
| 60 | typedef struct { pte_t pte; } real_pte_t; | |
| 2bf59916 | 61 | #endif |
| 3910a7f4 | 62 | |
| 4e003747 | 63 | #ifdef CONFIG_PPC_BOOK3S_64 |
| 3910a7f4 ME |
64 | #include <asm/cmpxchg.h> |
| 65 | ||
| 66 | static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new) | |
| 67 | { | |
| 68 | unsigned long *p = (unsigned long *)ptep; | |
| 69 | ||
| 1a92a80a | 70 | /* See comment in switch_mm_irqs_off() */ |
| 3910a7f4 ME |
71 | return pte_val(old) == __cmpxchg_u64(p, pte_val(old), pte_val(new)); |
| 72 | } | |
| 73 | #endif | |
| 74 | ||
| 20717e1f AK |
75 | typedef struct { unsigned long pd; } hugepd_t; |
| 76 | #define __hugepd(x) ((hugepd_t) { (x) }) | |
| 77 | static inline unsigned long hpd_val(hugepd_t x) | |
| 78 | { | |
| 79 | return x.pd; | |
| 80 | } | |
| 81 | ||
| 2bf59916 | 82 | #endif /* _ASM_POWERPC_PGTABLE_TYPES_H */ |