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 extern struct resource sparc_iomap;
18 
19 #define check_pgt_cache()	do { } while (0)
20 
21 pgd_t *get_pgd_fast(void);
22 static inline void free_pgd_fast(pgd_t *pgd)
23 {
24 	srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE);
25 }
26 
27 #define pgd_free(mm, pgd)	free_pgd_fast(pgd)
28 #define pgd_alloc(mm)	get_pgd_fast()
29 
30 static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
31 {
32 	unsigned long pa = __nocache_pa(pmdp);
33 
34 	set_pte((pte_t *)pgdp, __pte((SRMMU_ET_PTD | (pa >> 4))));
35 }
36 
37 #define pgd_populate(MM, PGD, PMD)      pgd_set(PGD, PMD)
38 
39 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
40 				   unsigned long address)
41 {
42 	return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
43 				 SRMMU_PMD_TABLE_SIZE);
44 }
45 
46 static inline void free_pmd_fast(pmd_t * pmd)
47 {
48 	srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE);
49 }
50 
51 #define pmd_free(mm, pmd)		free_pmd_fast(pmd)
52 #define __pmd_free_tlb(tlb, pmd, addr)	pmd_free((tlb)->mm, pmd)
53 
54 void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep);
55 #define pmd_pgtable(pmd) pmd_page(pmd)
56 
57 void pmd_set(pmd_t *pmdp, pte_t *ptep);
58 #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE)
59 
60 pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address);
61 
62 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
63 					  unsigned long address)
64 {
65 	return srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
66 }
67 
68 
69 static inline void free_pte_fast(pte_t *pte)
70 {
71 	srmmu_free_nocache(pte, PTE_SIZE);
72 }
73 
74 #define pte_free_kernel(mm, pte)	free_pte_fast(pte)
75 
76 void pte_free(struct mm_struct * mm, pgtable_t pte);
77 #define __pte_free_tlb(tlb, pte, addr)	pte_free((tlb)->mm, pte)
78 
79 #endif /* _SPARC_PGALLOC_H */
80