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);
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 
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 
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 
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 
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 
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