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 __p4d_populate(p4d_t *p4d, pud_t *pud) 20 { 21 p4d_set(p4d, pud); 22 } 23 24 #define p4d_populate(MM, P4D, PUD) __p4d_populate(P4D, 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 /* arch use pte_free_defer() implementation in arch/sparc/mm/init_64.c */ 69 #define pte_free_defer pte_free_defer 70 void pte_free_defer(struct mm_struct *mm, pgtable_t pgtable); 71 72 #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(MM, PMD, PTE) 73 #define pmd_populate(MM, PMD, PTE) pmd_set(MM, PMD, PTE) 74 75 void pgtable_free(void *table, bool is_page); 76 77 #ifdef CONFIG_SMP 78 79 struct mmu_gather; 80 void tlb_remove_table(struct mmu_gather *, void *); 81 82 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) 83 { 84 unsigned long pgf = (unsigned long)table; 85 if (is_page) 86 pgf |= 0x1UL; 87 tlb_remove_table(tlb, (void *)pgf); 88 } 89 90 static inline void __tlb_remove_table(void *_table) 91 { 92 void *table = (void *)((unsigned long)_table & ~0x1UL); 93 bool is_page = false; 94 95 if ((unsigned long)_table & 0x1UL) 96 is_page = true; 97 pgtable_free(table, is_page); 98 } 99 #else /* CONFIG_SMP */ 100 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) 101 { 102 pgtable_free(table, is_page); 103 } 104 #endif /* !CONFIG_SMP */ 105 106 static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte, 107 unsigned long address) 108 { 109 pgtable_free_tlb(tlb, pte, true); 110 } 111 112 #define __pmd_free_tlb(tlb, pmd, addr) \ 113 pgtable_free_tlb(tlb, pmd, false) 114 115 #define __pud_free_tlb(tlb, pud, addr) \ 116 pgtable_free_tlb(tlb, pud, false) 117 118 #endif /* _SPARC64_PGALLOC_H */ 119