1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _SPARC_PGALLOC_H
3 #define _SPARC_PGALLOC_H
4
5 #include <linux/kernel.h>
6 #include <linux/sched.h>
7
8 #include <asm/pgtsrmmu.h>
9 #include <asm/pgtable.h>
10 #include <asm/vaddrs.h>
11 #include <asm/page.h>
12
13 struct page;
14
15 void *srmmu_get_nocache(int size, int align);
16 void srmmu_free_nocache(void *addr, int size);
17
18 extern struct resource sparc_iomap;
19
20 #define check_pgt_cache() do { } while (0)
21
22 pgd_t *get_pgd_fast(void);
free_pgd_fast(pgd_t * pgd)23 static inline void free_pgd_fast(pgd_t *pgd)
24 {
25 srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE);
26 }
27
28 #define pgd_free(mm, pgd) free_pgd_fast(pgd)
29 #define pgd_alloc(mm) get_pgd_fast()
30
pgd_set(pgd_t * pgdp,pmd_t * pmdp)31 static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
32 {
33 unsigned long pa = __nocache_pa(pmdp);
34
35 set_pte((pte_t *)pgdp, __pte((SRMMU_ET_PTD | (pa >> 4))));
36 }
37
38 #define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD)
39
pmd_alloc_one(struct mm_struct * mm,unsigned long address)40 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
41 unsigned long address)
42 {
43 return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
44 SRMMU_PMD_TABLE_SIZE);
45 }
46
free_pmd_fast(pmd_t * pmd)47 static inline void free_pmd_fast(pmd_t * pmd)
48 {
49 srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE);
50 }
51
52 #define pmd_free(mm, pmd) free_pmd_fast(pmd)
53 #define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd)
54
55 void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep);
56 #define pmd_pgtable(pmd) pmd_page(pmd)
57
58 void pmd_set(pmd_t *pmdp, pte_t *ptep);
59 #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE)
60
61 pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address);
62
pte_alloc_one_kernel(struct mm_struct * mm,unsigned long address)63 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
64 unsigned long address)
65 {
66 return srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
67 }
68
69
free_pte_fast(pte_t * pte)70 static inline void free_pte_fast(pte_t *pte)
71 {
72 srmmu_free_nocache(pte, PTE_SIZE);
73 }
74
75 #define pte_free_kernel(mm, pte) free_pte_fast(pte)
76
77 void pte_free(struct mm_struct * mm, pgtable_t pte);
78 #define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte)
79
80 #endif /* _SPARC_PGALLOC_H */
81