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);
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 
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 
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 
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);
62 
63 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
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