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, GFP_KERNEL);
45 }
46 
47 static inline void pud_free(struct mm_struct *mm, pud_t *pud)
48 {
49 	kmem_cache_free(pgtable_cache, pud);
50 }
51 
52 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
53 {
54 	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
55 }
56 
57 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
58 {
59 	kmem_cache_free(pgtable_cache, pmd);
60 }
61 
62 pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
63 			    unsigned long address);
64 pgtable_t pte_alloc_one(struct mm_struct *mm,
65 			unsigned long address);
66 void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
67 void pte_free(struct mm_struct *mm, pgtable_t ptepage);
68 
69 #define pmd_populate_kernel(MM, PMD, PTE)	pmd_set(MM, PMD, PTE)
70 #define pmd_populate(MM, PMD, PTE)		pmd_set(MM, PMD, PTE)
71 #define pmd_pgtable(PMD)			((pte_t *)__pmd_page(PMD))
72 
73 #define check_pgt_cache()	do { } while (0)
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