1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _SPARC64_PGALLOC_H
3*4882a593Smuzhiyun #define _SPARC64_PGALLOC_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <linux/kernel.h>
6*4882a593Smuzhiyun #include <linux/sched.h>
7*4882a593Smuzhiyun #include <linux/mm.h>
8*4882a593Smuzhiyun #include <linux/slab.h>
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <asm/spitfire.h>
11*4882a593Smuzhiyun #include <asm/cpudata.h>
12*4882a593Smuzhiyun #include <asm/cacheflush.h>
13*4882a593Smuzhiyun #include <asm/page.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun /* Page table allocation/freeing. */
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun extern struct kmem_cache *pgtable_cache;
18*4882a593Smuzhiyun
__p4d_populate(p4d_t * p4d,pud_t * pud)19*4882a593Smuzhiyun static inline void __p4d_populate(p4d_t *p4d, pud_t *pud)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun p4d_set(p4d, pud);
22*4882a593Smuzhiyun }
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun #define p4d_populate(MM, P4D, PUD) __p4d_populate(P4D, PUD)
25*4882a593Smuzhiyun
pgd_alloc(struct mm_struct * mm)26*4882a593Smuzhiyun static inline pgd_t *pgd_alloc(struct mm_struct *mm)
27*4882a593Smuzhiyun {
28*4882a593Smuzhiyun return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun
pgd_free(struct mm_struct * mm,pgd_t * pgd)31*4882a593Smuzhiyun static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun kmem_cache_free(pgtable_cache, pgd);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
__pud_populate(pud_t * pud,pmd_t * pmd)36*4882a593Smuzhiyun static inline void __pud_populate(pud_t *pud, pmd_t *pmd)
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun pud_set(pud, pmd);
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun #define pud_populate(MM, PUD, PMD) __pud_populate(PUD, PMD)
42*4882a593Smuzhiyun
pud_alloc_one(struct mm_struct * mm,unsigned long addr)43*4882a593Smuzhiyun static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
44*4882a593Smuzhiyun {
45*4882a593Smuzhiyun return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
pud_free(struct mm_struct * mm,pud_t * pud)48*4882a593Smuzhiyun static inline void pud_free(struct mm_struct *mm, pud_t *pud)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun kmem_cache_free(pgtable_cache, pud);
51*4882a593Smuzhiyun }
52*4882a593Smuzhiyun
pmd_alloc_one(struct mm_struct * mm,unsigned long addr)53*4882a593Smuzhiyun static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
54*4882a593Smuzhiyun {
55*4882a593Smuzhiyun return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun
pmd_free(struct mm_struct * mm,pmd_t * pmd)58*4882a593Smuzhiyun static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
59*4882a593Smuzhiyun {
60*4882a593Smuzhiyun kmem_cache_free(pgtable_cache, pmd);
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
64*4882a593Smuzhiyun pgtable_t pte_alloc_one(struct mm_struct *mm);
65*4882a593Smuzhiyun void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
66*4882a593Smuzhiyun void pte_free(struct mm_struct *mm, pgtable_t ptepage);
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
69*4882a593Smuzhiyun #define pmd_populate(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
70*4882a593Smuzhiyun #define pmd_pgtable(PMD) ((pte_t *)pmd_page_vaddr(PMD))
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun void pgtable_free(void *table, bool is_page);
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun #ifdef CONFIG_SMP
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun struct mmu_gather;
77*4882a593Smuzhiyun void tlb_remove_table(struct mmu_gather *, void *);
78*4882a593Smuzhiyun
pgtable_free_tlb(struct mmu_gather * tlb,void * table,bool is_page)79*4882a593Smuzhiyun static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
80*4882a593Smuzhiyun {
81*4882a593Smuzhiyun unsigned long pgf = (unsigned long)table;
82*4882a593Smuzhiyun if (is_page)
83*4882a593Smuzhiyun pgf |= 0x1UL;
84*4882a593Smuzhiyun tlb_remove_table(tlb, (void *)pgf);
85*4882a593Smuzhiyun }
86*4882a593Smuzhiyun
__tlb_remove_table(void * _table)87*4882a593Smuzhiyun static inline void __tlb_remove_table(void *_table)
88*4882a593Smuzhiyun {
89*4882a593Smuzhiyun void *table = (void *)((unsigned long)_table & ~0x1UL);
90*4882a593Smuzhiyun bool is_page = false;
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun if ((unsigned long)_table & 0x1UL)
93*4882a593Smuzhiyun is_page = true;
94*4882a593Smuzhiyun pgtable_free(table, is_page);
95*4882a593Smuzhiyun }
96*4882a593Smuzhiyun #else /* CONFIG_SMP */
pgtable_free_tlb(struct mmu_gather * tlb,void * table,bool is_page)97*4882a593Smuzhiyun static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
98*4882a593Smuzhiyun {
99*4882a593Smuzhiyun pgtable_free(table, is_page);
100*4882a593Smuzhiyun }
101*4882a593Smuzhiyun #endif /* !CONFIG_SMP */
102*4882a593Smuzhiyun
__pte_free_tlb(struct mmu_gather * tlb,pte_t * pte,unsigned long address)103*4882a593Smuzhiyun static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
104*4882a593Smuzhiyun unsigned long address)
105*4882a593Smuzhiyun {
106*4882a593Smuzhiyun pgtable_free_tlb(tlb, pte, true);
107*4882a593Smuzhiyun }
108*4882a593Smuzhiyun
109*4882a593Smuzhiyun #define __pmd_free_tlb(tlb, pmd, addr) \
110*4882a593Smuzhiyun pgtable_free_tlb(tlb, pmd, false)
111*4882a593Smuzhiyun
112*4882a593Smuzhiyun #define __pud_free_tlb(tlb, pud, addr) \
113*4882a593Smuzhiyun pgtable_free_tlb(tlb, pud, false)
114*4882a593Smuzhiyun
115*4882a593Smuzhiyun #endif /* _SPARC64_PGALLOC_H */
116