1 #ifndef _SPARC_PGALLOC_H
2 #define _SPARC_PGALLOC_H
3 
4 #include <linux/kernel.h>
5 #include <linux/sched.h>
6 
7 #include <asm/pgtsrmmu.h>
8 #include <asm/pgtable.h>
9 #include <asm/vaddrs.h>
10 #include <asm/page.h>
11 
12 struct page;
13 
14 void *srmmu_get_nocache(int size, int align);
15 void srmmu_free_nocache(void *addr, int size);
16 
17 #define check_pgt_cache()	do { } while (0)
18 
19 pgd_t *get_pgd_fast(void);
20 static inline void free_pgd_fast(pgd_t *pgd)
21 {
22 	srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE);
23 }
24 
25 #define pgd_free(mm, pgd)	free_pgd_fast(pgd)
26 #define pgd_alloc(mm)	get_pgd_fast()
27 
28 static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
29 {
30 	unsigned long pa = __nocache_pa((unsigned long)pmdp);
31 
32 	set_pte((pte_t *)pgdp, (SRMMU_ET_PTD | (pa >> 4)));
33 }
34 
35 #define pgd_populate(MM, PGD, PMD)      pgd_set(PGD, PMD)
36 
37 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
38 				   unsigned long address)
39 {
40 	return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
41 				 SRMMU_PMD_TABLE_SIZE);
42 }
43 
44 static inline void free_pmd_fast(pmd_t * pmd)
45 {
46 	srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE);
47 }
48 
49 #define pmd_free(mm, pmd)		free_pmd_fast(pmd)
50 #define __pmd_free_tlb(tlb, pmd, addr)	pmd_free((tlb)->mm, pmd)
51 
52 void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep);
53 #define pmd_pgtable(pmd) pmd_page(pmd)
54 
55 void pmd_set(pmd_t *pmdp, pte_t *ptep);
56 #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE)
57 
58 pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address);
59 
60 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
61 					  unsigned long address)
62 {
63 	return srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
64 }
65 
66 
67 static inline void free_pte_fast(pte_t *pte)
68 {
69 	srmmu_free_nocache(pte, PTE_SIZE);
70 }
71 
72 #define pte_free_kernel(mm, pte)	free_pte_fast(pte)
73 
74 void pte_free(struct mm_struct * mm, pgtable_t pte);
75 #define __pte_free_tlb(tlb, pte, addr)	pte_free((tlb)->mm, pte)
76 
77 #endif /* _SPARC_PGALLOC_H */
78