1 #ifndef _SPARC64_PGALLOC_H 2 #define _SPARC64_PGALLOC_H 3 4 #include <linux/kernel.h> 5 #include <linux/sched.h> 6 #include <linux/mm.h> 7 #include <linux/slab.h> 8 9 #include <asm/spitfire.h> 10 #include <asm/cpudata.h> 11 #include <asm/cacheflush.h> 12 #include <asm/page.h> 13 14 /* Page table allocation/freeing. */ 15 16 extern struct kmem_cache *pgtable_cache; 17 18 static inline pgd_t *pgd_alloc(struct mm_struct *mm) 19 { 20 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); 21 } 22 23 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) 24 { 25 kmem_cache_free(pgtable_cache, pgd); 26 } 27 28 #define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD) 29 30 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) 31 { 32 return kmem_cache_alloc(pgtable_cache, 33 GFP_KERNEL|__GFP_REPEAT); 34 } 35 36 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) 37 { 38 kmem_cache_free(pgtable_cache, pmd); 39 } 40 41 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, 42 unsigned long address) 43 { 44 return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO); 45 } 46 47 static inline pgtable_t pte_alloc_one(struct mm_struct *mm, 48 unsigned long address) 49 { 50 struct page *page; 51 pte_t *pte; 52 53 pte = pte_alloc_one_kernel(mm, address); 54 if (!pte) 55 return NULL; 56 page = virt_to_page(pte); 57 pgtable_page_ctor(page); 58 return page; 59 } 60 61 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) 62 { 63 free_page((unsigned long)pte); 64 } 65 66 static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage) 67 { 68 pgtable_page_dtor(ptepage); 69 __free_page(ptepage); 70 } 71 72 #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE) 73 #define pmd_populate(MM,PMD,PTE_PAGE) \ 74 pmd_populate_kernel(MM,PMD,page_address(PTE_PAGE)) 75 #define pmd_pgtable(pmd) pmd_page(pmd) 76 77 #define check_pgt_cache() do { } while (0) 78 79 static inline void pgtable_free(void *table, bool is_page) 80 { 81 if (is_page) 82 free_page((unsigned long)table); 83 else 84 kmem_cache_free(pgtable_cache, table); 85 } 86 87 #ifdef CONFIG_SMP 88 89 struct mmu_gather; 90 extern void tlb_remove_table(struct mmu_gather *, void *); 91 92 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) 93 { 94 unsigned long pgf = (unsigned long)table; 95 if (is_page) 96 pgf |= 0x1UL; 97 tlb_remove_table(tlb, (void *)pgf); 98 } 99 100 static inline void __tlb_remove_table(void *_table) 101 { 102 void *table = (void *)((unsigned long)_table & ~0x1UL); 103 bool is_page = false; 104 105 if ((unsigned long)_table & 0x1UL) 106 is_page = true; 107 pgtable_free(table, is_page); 108 } 109 #else /* CONFIG_SMP */ 110 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) 111 { 112 pgtable_free(table, is_page); 113 } 114 #endif /* !CONFIG_SMP */ 115 116 static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage, 117 unsigned long address) 118 { 119 pgtable_page_dtor(ptepage); 120 pgtable_free_tlb(tlb, page_address(ptepage), true); 121 } 122 123 #define __pmd_free_tlb(tlb, pmd, addr) \ 124 pgtable_free_tlb(tlb, pmd, false) 125 126 #endif /* _SPARC64_PGALLOC_H */ 127