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
pgd_alloc(struct mm_struct * mm)18 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
19 {
20 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
21 }
22
pgd_free(struct mm_struct * mm,pgd_t * pgd)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
pmd_alloc_one(struct mm_struct * mm,unsigned long addr)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
pmd_free(struct mm_struct * mm,pmd_t * pmd)36 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
37 {
38 kmem_cache_free(pgtable_cache, pmd);
39 }
40
pte_alloc_one_kernel(struct mm_struct * mm,unsigned long address)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
pte_alloc_one(struct mm_struct * mm,unsigned long address)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
pte_free_kernel(struct mm_struct * mm,pte_t * pte)61 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
62 {
63 free_page((unsigned long)pte);
64 }
65
pte_free(struct mm_struct * mm,pgtable_t ptepage)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
pgtable_free(void * table,bool is_page)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
pgtable_free_tlb(struct mmu_gather * tlb,void * table,bool is_page)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
__tlb_remove_table(void * _table)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 */
pgtable_free_tlb(struct mmu_gather * tlb,void * table,bool is_page)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
__pte_free_tlb(struct mmu_gather * tlb,struct page * ptepage,unsigned long address)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