projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| f5e706ad SR |
2 | #ifndef _SPARC64_PGALLOC_H |
| 3 | #define _SPARC64_PGALLOC_H | |
| 4 | ||
| 5 | #include <linux/kernel.h> | |
| 6 | #include <linux/sched.h> | |
| 7 | #include <linux/mm.h> | |
| 8 | #include <linux/slab.h> | |
| f5e706ad SR |
9 | |
| 10 | #include <asm/spitfire.h> | |
| 11 | #include <asm/cpudata.h> | |
| 12 | #include <asm/cacheflush.h> | |
| 13 | #include <asm/page.h> | |
| 14 | ||
| 15 | /* Page table allocation/freeing. */ | |
| 16 | ||
| 4dedbf8d DM |
17 | extern struct kmem_cache *pgtable_cache; |
| 18 | ||
| ac55c768 DM |
19 | static inline void __pgd_populate(pgd_t *pgd, pud_t *pud) |
| 20 | { | |
| 21 | pgd_set(pgd, pud); | |
| 22 | } | |
| 23 | ||
| 24 | #define pgd_populate(MM, PGD, PUD) __pgd_populate(PGD, PUD) | |
| 25 | ||
| f5e706ad SR |
26 | static inline pgd_t *pgd_alloc(struct mm_struct *mm) |
| 27 | { | |
| 4dedbf8d | 28 | return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); |
| f5e706ad SR |
29 | } |
| 30 | ||
| 31 | static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) | |
| 32 | { | |
| 4dedbf8d | 33 | kmem_cache_free(pgtable_cache, pgd); |
| f5e706ad SR |
34 | } |
| 35 | ||
| ac55c768 DM |
36 | static inline void __pud_populate(pud_t *pud, pmd_t *pmd) |
| 37 | { | |
| 38 | pud_set(pud, pmd); | |
| 39 | } | |
| 40 | ||
| 41 | #define pud_populate(MM, PUD, PMD) __pud_populate(PUD, PMD) | |
| 42 | ||
| 43 | static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) | |
| 44 | { | |
| 45eeff26 | 45 | return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); |
| ac55c768 DM |
46 | } |
| 47 | ||
| 48 | static inline void pud_free(struct mm_struct *mm, pud_t *pud) | |
| 49 | { | |
| 50 | kmem_cache_free(pgtable_cache, pud); | |
| 51 | } | |
| f5e706ad SR |
52 | |
| 53 | static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) | |
| 54 | { | |
| 45eeff26 | 55 | return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); |
| f5e706ad SR |
56 | } |
| 57 | ||
| 58 | static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) | |
| 59 | { | |
| 4dedbf8d | 60 | kmem_cache_free(pgtable_cache, pmd); |
| f5e706ad SR |
61 | } |
| 62 | ||
| f05a6865 SR |
63 | pte_t *pte_alloc_one_kernel(struct mm_struct *mm, |
| 64 | unsigned long address); | |
| 65 | pgtable_t pte_alloc_one(struct mm_struct *mm, | |
| 66 | unsigned long address); | |
| 67 | void pte_free_kernel(struct mm_struct *mm, pte_t *pte); | |
| 68 | void pte_free(struct mm_struct *mm, pgtable_t ptepage); | |
| f5e706ad | 69 | |
| 9e695d2e DM |
70 | #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(MM, PMD, PTE) |
| 71 | #define pmd_populate(MM, PMD, PTE) pmd_set(MM, PMD, PTE) | |
| c460bec7 | 72 | #define pmd_pgtable(PMD) ((pte_t *)__pmd_page(PMD)) |
| f5e706ad | 73 | |
| 4dedbf8d | 74 | #define check_pgt_cache() do { } while (0) |
| f5e706ad | 75 | |
| f05a6865 | 76 | void pgtable_free(void *table, bool is_page); |
| 4a0100f7 DM |
77 | |
| 78 | #ifdef CONFIG_SMP | |
| 79 | ||
| 80 | struct mmu_gather; | |
| f05a6865 | 81 | void tlb_remove_table(struct mmu_gather *, void *); |
| 4a0100f7 DM |
82 | |
| 83 | static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) | |
| 84 | { | |
| 85 | unsigned long pgf = (unsigned long)table; | |
| 86 | if (is_page) | |
| 87 | pgf |= 0x1UL; | |
| 88 | tlb_remove_table(tlb, (void *)pgf); | |
| 89 | } | |
| 90 | ||
| 91 | static inline void __tlb_remove_table(void *_table) | |
| 92 | { | |
| 93 | void *table = (void *)((unsigned long)_table & ~0x1UL); | |
| 94 | bool is_page = false; | |
| 95 | ||
| 96 | if ((unsigned long)_table & 0x1UL) | |
| 97 | is_page = true; | |
| 98 | pgtable_free(table, is_page); | |
| 99 | } | |
| 100 | #else /* CONFIG_SMP */ | |
| 101 | static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) | |
| 102 | { | |
| 103 | pgtable_free(table, is_page); | |
| 104 | } | |
| 105 | #endif /* !CONFIG_SMP */ | |
| 106 | ||
| c460bec7 | 107 | static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte, |
| 4a0100f7 DM |
108 | unsigned long address) |
| 109 | { | |
| c460bec7 | 110 | pgtable_free_tlb(tlb, pte, true); |
| 4a0100f7 DM |
111 | } |
| 112 | ||
| 113 | #define __pmd_free_tlb(tlb, pmd, addr) \ | |
| 114 | pgtable_free_tlb(tlb, pmd, false) | |
| 90f08e39 | 115 | |
| ac55c768 DM |
116 | #define __pud_free_tlb(tlb, pud, addr) \ |
| 117 | pgtable_free_tlb(tlb, pud, false) | |
| 118 | ||
| f5e706ad | 119 | #endif /* _SPARC64_PGALLOC_H */ |