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 void __pgd_populate(pgd_t *pgd, pud_t *pud)
19 {
20 	pgd_set(pgd, pud);
21 }
22 
23 #define pgd_populate(MM, PGD, PUD)	__pgd_populate(PGD, PUD)
24 
25 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
26 {
27 	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
28 }
29 
30 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
31 {
32 	kmem_cache_free(pgtable_cache, pgd);
33 }
34 
35 static inline void __pud_populate(pud_t *pud, pmd_t *pmd)
36 {
37 	pud_set(pud, pmd);
38 }
39 
40 #define pud_populate(MM, PUD, PMD)	__pud_populate(PUD, PMD)
41 
42 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
43 {
44 	return kmem_cache_alloc(pgtable_cache,
45 				GFP_KERNEL|__GFP_REPEAT);
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,
56 				GFP_KERNEL|__GFP_REPEAT);
57 }
58 
59 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
60 {
61 	kmem_cache_free(pgtable_cache, pmd);
62 }
63 
64 pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
65 			    unsigned long address);
66 pgtable_t pte_alloc_one(struct mm_struct *mm,
67 			unsigned long address);
68 void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
69 void pte_free(struct mm_struct *mm, pgtable_t ptepage);
70 
71 #define pmd_populate_kernel(MM, PMD, PTE)	pmd_set(MM, PMD, PTE)
72 #define pmd_populate(MM, PMD, PTE)		pmd_set(MM, PMD, PTE)
73 #define pmd_pgtable(PMD)			((pte_t *)__pmd_page(PMD))
74 
75 #define check_pgt_cache()	do { } while (0)
76 
77 void pgtable_free(void *table, bool is_page);
78 
79 #ifdef CONFIG_SMP
80 
81 struct mmu_gather;
82 void tlb_remove_table(struct mmu_gather *, void *);
83 
84 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
85 {
86 	unsigned long pgf = (unsigned long)table;
87 	if (is_page)
88 		pgf |= 0x1UL;
89 	tlb_remove_table(tlb, (void *)pgf);
90 }
91 
92 static inline void __tlb_remove_table(void *_table)
93 {
94 	void *table = (void *)((unsigned long)_table & ~0x1UL);
95 	bool is_page = false;
96 
97 	if ((unsigned long)_table & 0x1UL)
98 		is_page = true;
99 	pgtable_free(table, is_page);
100 }
101 #else /* CONFIG_SMP */
102 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
103 {
104 	pgtable_free(table, is_page);
105 }
106 #endif /* !CONFIG_SMP */
107 
108 static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
109 				  unsigned long address)
110 {
111 	pgtable_free_tlb(tlb, pte, true);
112 }
113 
114 #define __pmd_free_tlb(tlb, pmd, addr)		      \
115 	pgtable_free_tlb(tlb, pmd, false)
116 
117 #define __pud_free_tlb(tlb, pud, addr)		      \
118 	pgtable_free_tlb(tlb, pud, false)
119 
120 #endif /* _SPARC64_PGALLOC_H */
121