| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 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> |
| 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 | |
| 17 | extern struct kmem_cache *pgtable_cache; |
| 18 | |
| 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 | |
| 26 | static inline pgd_t *pgd_alloc(struct mm_struct *mm) |
| 27 | { |
| 28 | return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); |
| 29 | } |
| 30 | |
| 31 | static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) |
| 32 | { |
| 33 | kmem_cache_free(pgtable_cache, pgd); |
| 34 | } |
| 35 | |
| 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 | { |
| 45 | return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); |
| 46 | } |
| 47 | |
| 48 | static inline void pud_free(struct mm_struct *mm, pud_t *pud) |
| 49 | { |
| 50 | kmem_cache_free(pgtable_cache, pud); |
| 51 | } |
| 52 | |
| 53 | static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) |
| 54 | { |
| 55 | return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); |
| 56 | } |
| 57 | |
| 58 | static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) |
| 59 | { |
| 60 | kmem_cache_free(pgtable_cache, pmd); |
| 61 | } |
| 62 | |
| 63 | pte_t *pte_alloc_one_kernel(struct mm_struct *mm); |
| 64 | pgtable_t pte_alloc_one(struct mm_struct *mm); |
| 65 | void pte_free_kernel(struct mm_struct *mm, pte_t *pte); |
| 66 | void pte_free(struct mm_struct *mm, pgtable_t ptepage); |
| 67 | |
| 68 | #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(MM, PMD, PTE) |
| 69 | #define pmd_populate(MM, PMD, PTE) pmd_set(MM, PMD, PTE) |
| 70 | #define pmd_pgtable(PMD) ((pte_t *)__pmd_page(PMD)) |
| 71 | |
| 72 | void pgtable_free(void *table, bool is_page); |
| 73 | |
| 74 | #ifdef CONFIG_SMP |
| 75 | |
| 76 | struct mmu_gather; |
| 77 | void tlb_remove_table(struct mmu_gather *, void *); |
| 78 | |
| 79 | static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) |
| 80 | { |
| 81 | unsigned long pgf = (unsigned long)table; |
| 82 | if (is_page) |
| 83 | pgf |= 0x1UL; |
| 84 | tlb_remove_table(tlb, (void *)pgf); |
| 85 | } |
| 86 | |
| 87 | static inline void __tlb_remove_table(void *_table) |
| 88 | { |
| 89 | void *table = (void *)((unsigned long)_table & ~0x1UL); |
| 90 | bool is_page = false; |
| 91 | |
| 92 | if ((unsigned long)_table & 0x1UL) |
| 93 | is_page = true; |
| 94 | pgtable_free(table, is_page); |
| 95 | } |
| 96 | #else /* CONFIG_SMP */ |
| 97 | static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) |
| 98 | { |
| 99 | pgtable_free(table, is_page); |
| 100 | } |
| 101 | #endif /* !CONFIG_SMP */ |
| 102 | |
| 103 | static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte, |
| 104 | unsigned long address) |
| 105 | { |
| 106 | pgtable_free_tlb(tlb, pte, true); |
| 107 | } |
| 108 | |
| 109 | #define __pmd_free_tlb(tlb, pmd, addr) \ |
| 110 | pgtable_free_tlb(tlb, pmd, false) |
| 111 | |
| 112 | #define __pud_free_tlb(tlb, pud, addr) \ |
| 113 | pgtable_free_tlb(tlb, pud, false) |
| 114 | |
| 115 | #endif /* _SPARC64_PGALLOC_H */ |