Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
12struct page;
13
14extern 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
21unsigned long srmmu_get_nocache(int size, int align);
22void srmmu_free_nocache(unsigned long vaddr, 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
32pgd_t *get_pgd_fast(void);
33static inline void free_pgd_fast(pgd_t *pgd)
34{
35 srmmu_free_nocache((unsigned long)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
41static 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
50static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
51 unsigned long address)
52{
53 return (pmd_t *)srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
54 SRMMU_PMD_TABLE_SIZE);
55}
56
57static inline void free_pmd_fast(pmd_t * pmd)
58{
59 srmmu_free_nocache((unsigned long)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
65void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep);
66#define pmd_pgtable(pmd) pmd_page(pmd)
67
68void pmd_set(pmd_t *pmdp, pte_t *ptep);
69#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE)
70
71pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address);
72
73static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
74 unsigned long address)
75{
76 return (pte_t *)srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
77}
78
79
80static inline void free_pte_fast(pte_t *pte)
81{
82 srmmu_free_nocache((unsigned long)pte, PTE_SIZE);
83}
84
85#define pte_free_kernel(mm, pte) free_pte_fast(pte)
86
87void 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 */