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 #include <linux/pgtable.h>
8
9 #include <asm/pgtsrmmu.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 pgd_t *get_pgd_fast(void);
free_pgd_fast(pgd_t * pgd)21 static inline void free_pgd_fast(pgd_t *pgd)
22 {
23 srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE);
24 }
25
26 #define pgd_free(mm, pgd) free_pgd_fast(pgd)
27 #define pgd_alloc(mm) get_pgd_fast()
28
pud_set(pud_t * pudp,pmd_t * pmdp)29 static inline void pud_set(pud_t * pudp, pmd_t * pmdp)
30 {
31 unsigned long pa = __nocache_pa(pmdp);
32
33 set_pte((pte_t *)pudp, __pte((SRMMU_ET_PTD | (pa >> 4))));
34 }
35
36 #define pud_populate(MM, PGD, PMD) pud_set(PGD, PMD)
37
pmd_alloc_one(struct mm_struct * mm,unsigned long address)38 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
39 unsigned long address)
40 {
41 return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
42 SRMMU_PMD_TABLE_SIZE);
43 }
44
free_pmd_fast(pmd_t * pmd)45 static inline void free_pmd_fast(pmd_t * pmd)
46 {
47 srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE);
48 }
49
50 #define pmd_free(mm, pmd) free_pmd_fast(pmd)
51 #define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd)
52
53 #define pmd_populate(mm, pmd, pte) pmd_set(pmd, pte)
54 #define pmd_pgtable(pmd) (pgtable_t)__pmd_page(pmd)
55
56 void pmd_set(pmd_t *pmdp, pte_t *ptep);
57 #define pmd_populate_kernel pmd_populate
58
59 pgtable_t pte_alloc_one(struct mm_struct *mm);
60
pte_alloc_one_kernel(struct mm_struct * mm)61 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
62 {
63 return srmmu_get_nocache(SRMMU_PTE_TABLE_SIZE,
64 SRMMU_PTE_TABLE_SIZE);
65 }
66
67
free_pte_fast(pte_t * pte)68 static inline void free_pte_fast(pte_t *pte)
69 {
70 srmmu_free_nocache(pte, SRMMU_PTE_TABLE_SIZE);
71 }
72
73 #define pte_free_kernel(mm, pte) free_pte_fast(pte)
74
75 void pte_free(struct mm_struct * mm, pgtable_t pte);
76 #define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte)
77
78 #endif /* _SPARC_PGALLOC_H */
79