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 extern struct pgtable_cache_struct {
15 	unsigned long *pgd_cache;
16 	unsigned long *pte_cache;
17 	unsigned long pgtable_cache_sz;
18 	unsigned long pgd_cache_sz;
19 } pgt_quicklists;
20 
21 void *srmmu_get_nocache(int size, int align);
22 void srmmu_free_nocache(void *addr, int size);
23 
24 #define pgd_quicklist           (pgt_quicklists.pgd_cache)
25 #define pmd_quicklist           ((unsigned long *)0)
26 #define pte_quicklist           (pgt_quicklists.pte_cache)
27 #define pgtable_cache_size      (pgt_quicklists.pgtable_cache_sz)
28 #define pgd_cache_size		(pgt_quicklists.pgd_cache_sz)
29 
30 #define check_pgt_cache()	do { } while (0)
31 
32 pgd_t *get_pgd_fast(void);
33 static inline void free_pgd_fast(pgd_t *pgd)
34 {
35 	srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE);
36 }
37 
38 #define pgd_free(mm, pgd)	free_pgd_fast(pgd)
39 #define pgd_alloc(mm)	get_pgd_fast()
40 
41 static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
42 {
43 	unsigned long pa = __nocache_pa((unsigned long)pmdp);
44 
45 	set_pte((pte_t *)pgdp, (SRMMU_ET_PTD | (pa >> 4)));
46 }
47 
48 #define pgd_populate(MM, PGD, PMD)      pgd_set(PGD, PMD)
49 
50 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
51 				   unsigned long address)
52 {
53 	return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
54 				 SRMMU_PMD_TABLE_SIZE);
55 }
56 
57 static inline void free_pmd_fast(pmd_t * pmd)
58 {
59 	srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE);
60 }
61 
62 #define pmd_free(mm, pmd)		free_pmd_fast(pmd)
63 #define __pmd_free_tlb(tlb, pmd, addr)	pmd_free((tlb)->mm, pmd)
64 
65 void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep);
66 #define pmd_pgtable(pmd) pmd_page(pmd)
67 
68 void pmd_set(pmd_t *pmdp, pte_t *ptep);
69 #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE)
70 
71 pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address);
72 
73 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
74 					  unsigned long address)
75 {
76 	return srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
77 }
78 
79 
80 static inline void free_pte_fast(pte_t *pte)
81 {
82 	srmmu_free_nocache(pte, PTE_SIZE);
83 }
84 
85 #define pte_free_kernel(mm, pte)	free_pte_fast(pte)
86 
87 void pte_free(struct mm_struct * mm, pgtable_t pte);
88 #define __pte_free_tlb(tlb, pte, addr)	pte_free((tlb)->mm, pte)
89 
90 #endif /* _SPARC_PGALLOC_H */
91