1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _MOTOROLA_PGALLOC_H
3*4882a593Smuzhiyun #define _MOTOROLA_PGALLOC_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <asm/tlb.h>
6*4882a593Smuzhiyun #include <asm/tlbflush.h>
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun extern void mmu_page_ctor(void *page);
9*4882a593Smuzhiyun extern void mmu_page_dtor(void *page);
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun enum m68k_table_types {
12*4882a593Smuzhiyun TABLE_PGD = 0,
13*4882a593Smuzhiyun TABLE_PMD = 0, /* same size as PGD */
14*4882a593Smuzhiyun TABLE_PTE = 1,
15*4882a593Smuzhiyun };
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun extern void init_pointer_table(void *table, int type);
18*4882a593Smuzhiyun extern void *get_pointer_table(int type);
19*4882a593Smuzhiyun extern int free_pointer_table(void *table, int type);
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun /*
22*4882a593Smuzhiyun * Allocate and free page tables. The xxx_kernel() versions are
23*4882a593Smuzhiyun * used to allocate a kernel page table - this turns on ASN bits
24*4882a593Smuzhiyun * if any.
25*4882a593Smuzhiyun */
26*4882a593Smuzhiyun
pte_alloc_one_kernel(struct mm_struct * mm)27*4882a593Smuzhiyun static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun return get_pointer_table(TABLE_PTE);
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
pte_free_kernel(struct mm_struct * mm,pte_t * pte)32*4882a593Smuzhiyun static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun free_pointer_table(pte, TABLE_PTE);
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
pte_alloc_one(struct mm_struct * mm)37*4882a593Smuzhiyun static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun return get_pointer_table(TABLE_PTE);
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
pte_free(struct mm_struct * mm,pgtable_t pgtable)42*4882a593Smuzhiyun static inline void pte_free(struct mm_struct *mm, pgtable_t pgtable)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun free_pointer_table(pgtable, TABLE_PTE);
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
__pte_free_tlb(struct mmu_gather * tlb,pgtable_t pgtable,unsigned long address)47*4882a593Smuzhiyun static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pgtable,
48*4882a593Smuzhiyun unsigned long address)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun free_pointer_table(pgtable, TABLE_PTE);
51*4882a593Smuzhiyun }
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun
pmd_alloc_one(struct mm_struct * mm,unsigned long address)54*4882a593Smuzhiyun static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun return get_pointer_table(TABLE_PMD);
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
pmd_free(struct mm_struct * mm,pmd_t * pmd)59*4882a593Smuzhiyun static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
60*4882a593Smuzhiyun {
61*4882a593Smuzhiyun return free_pointer_table(pmd, TABLE_PMD);
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
__pmd_free_tlb(struct mmu_gather * tlb,pmd_t * pmd,unsigned long address)64*4882a593Smuzhiyun static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
65*4882a593Smuzhiyun unsigned long address)
66*4882a593Smuzhiyun {
67*4882a593Smuzhiyun return free_pointer_table(pmd, TABLE_PMD);
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun
pgd_free(struct mm_struct * mm,pgd_t * pgd)71*4882a593Smuzhiyun static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
72*4882a593Smuzhiyun {
73*4882a593Smuzhiyun free_pointer_table(pgd, TABLE_PGD);
74*4882a593Smuzhiyun }
75*4882a593Smuzhiyun
pgd_alloc(struct mm_struct * mm)76*4882a593Smuzhiyun static inline pgd_t *pgd_alloc(struct mm_struct *mm)
77*4882a593Smuzhiyun {
78*4882a593Smuzhiyun return get_pointer_table(TABLE_PGD);
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun
pmd_populate_kernel(struct mm_struct * mm,pmd_t * pmd,pte_t * pte)82*4882a593Smuzhiyun static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
83*4882a593Smuzhiyun {
84*4882a593Smuzhiyun pmd_set(pmd, pte);
85*4882a593Smuzhiyun }
86*4882a593Smuzhiyun
pmd_populate(struct mm_struct * mm,pmd_t * pmd,pgtable_t page)87*4882a593Smuzhiyun static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
88*4882a593Smuzhiyun {
89*4882a593Smuzhiyun pmd_set(pmd, page);
90*4882a593Smuzhiyun }
91*4882a593Smuzhiyun #define pmd_pgtable(pmd) ((pgtable_t)pmd_page_vaddr(pmd))
92*4882a593Smuzhiyun
pud_populate(struct mm_struct * mm,pud_t * pud,pmd_t * pmd)93*4882a593Smuzhiyun static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
94*4882a593Smuzhiyun {
95*4882a593Smuzhiyun pud_set(pud, pmd);
96*4882a593Smuzhiyun }
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun #endif /* _MOTOROLA_PGALLOC_H */
99