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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _SPARC64_PGALLOC_H
3#define _SPARC64_PGALLOC_H
4
5#include <linux/kernel.h>
6#include <linux/sched.h>
7#include <linux/mm.h>
8#include <linux/slab.h>
9
10#include <asm/spitfire.h>
11#include <asm/cpudata.h>
12#include <asm/cacheflush.h>
13#include <asm/page.h>
14
15/* Page table allocation/freeing. */
16
17extern struct kmem_cache *pgtable_cache;
18
19static inline void __p4d_populate(p4d_t *p4d, pud_t *pud)
20{
21 p4d_set(p4d, pud);
22}
23
24#define p4d_populate(MM, P4D, PUD) __p4d_populate(P4D, PUD)
25
26static inline pgd_t *pgd_alloc(struct mm_struct *mm)
27{
28 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
29}
30
31static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
32{
33 kmem_cache_free(pgtable_cache, pgd);
34}
35
36static inline void __pud_populate(pud_t *pud, pmd_t *pmd)
37{
38 pud_set(pud, pmd);
39}
40
41#define pud_populate(MM, PUD, PMD) __pud_populate(PUD, PMD)
42
43static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
44{
45 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
46}
47
48static inline void pud_free(struct mm_struct *mm, pud_t *pud)
49{
50 kmem_cache_free(pgtable_cache, pud);
51}
52
53static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
54{
55 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
56}
57
58static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
59{
60 kmem_cache_free(pgtable_cache, pmd);
61}
62
63pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
64pgtable_t pte_alloc_one(struct mm_struct *mm);
65void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
66void pte_free(struct mm_struct *mm, pgtable_t ptepage);
67
68/* arch use pte_free_defer() implementation in arch/sparc/mm/init_64.c */
69#define pte_free_defer pte_free_defer
70void pte_free_defer(struct mm_struct *mm, pgtable_t pgtable);
71
72#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
73#define pmd_populate(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
74
75void pgtable_free(void *table, bool is_page);
76
77#ifdef CONFIG_SMP
78
79struct mmu_gather;
80void tlb_remove_table(struct mmu_gather *, void *);
81
82static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
83{
84 unsigned long pgf = (unsigned long)table;
85 if (is_page)
86 pgf |= 0x1UL;
87 tlb_remove_table(tlb, (void *)pgf);
88}
89
90static inline void __tlb_remove_table(void *_table)
91{
92 void *table = (void *)((unsigned long)_table & ~0x1UL);
93 bool is_page = false;
94
95 if ((unsigned long)_table & 0x1UL)
96 is_page = true;
97 pgtable_free(table, is_page);
98}
99#else /* CONFIG_SMP */
100static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
101{
102 pgtable_free(table, is_page);
103}
104#endif /* !CONFIG_SMP */
105
106static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
107 unsigned long address)
108{
109 pgtable_free_tlb(tlb, pte, true);
110}
111
112#define __pmd_free_tlb(tlb, pmd, addr) \
113 pgtable_free_tlb(tlb, pmd, false)
114
115#define __pud_free_tlb(tlb, pud, addr) \
116 pgtable_free_tlb(tlb, pud, false)
117
118#endif /* _SPARC64_PGALLOC_H */