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
16extern struct kmem_cache *pgtable_cache;
17
18static 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
25static inline pgd_t *pgd_alloc(struct mm_struct *mm)
26{
27	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
28}
29
30static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
31{
32	kmem_cache_free(pgtable_cache, pgd);
33}
34
35static 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
42static 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
48static inline void pud_free(struct mm_struct *mm, pud_t *pud)
49{
50	kmem_cache_free(pgtable_cache, pud);
51}
52
53static 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
59static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
60{
61	kmem_cache_free(pgtable_cache, pmd);
62}
63
64pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
65			    unsigned long address);
66pgtable_t pte_alloc_one(struct mm_struct *mm,
67			unsigned long address);
68void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
69void 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
77void pgtable_free(void *table, bool is_page);
78
79#ifdef CONFIG_SMP
80
81struct mmu_gather;
82void tlb_remove_table(struct mmu_gather *, void *);
83
84static 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
92static 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 */
102static 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
108static 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