diff options
Diffstat (limited to 'arch/m68k/include/asm/motorola_pgalloc.h')
-rw-r--r-- | arch/m68k/include/asm/motorola_pgalloc.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/motorola_pgalloc.h b/arch/m68k/include/asm/motorola_pgalloc.h new file mode 100644 index 0000000000..74a817d938 --- /dev/null +++ b/arch/m68k/include/asm/motorola_pgalloc.h @@ -0,0 +1,97 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _MOTOROLA_PGALLOC_H +#define _MOTOROLA_PGALLOC_H + +#include <asm/tlb.h> +#include <asm/tlbflush.h> + +extern void mmu_page_ctor(void *page); +extern void mmu_page_dtor(void *page); + +enum m68k_table_types { + TABLE_PGD = 0, + TABLE_PMD = 0, /* same size as PGD */ + TABLE_PTE = 1, +}; + +extern void init_pointer_table(void *table, int type); +extern void *get_pointer_table(int type); +extern int free_pointer_table(void *table, int type); + +/* + * Allocate and free page tables. The xxx_kernel() versions are + * used to allocate a kernel page table - this turns on ASN bits + * if any. + */ + +static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm) +{ + return get_pointer_table(TABLE_PTE); +} + +static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) +{ + free_pointer_table(pte, TABLE_PTE); +} + +static inline pgtable_t pte_alloc_one(struct mm_struct *mm) +{ + return get_pointer_table(TABLE_PTE); +} + +static inline void pte_free(struct mm_struct *mm, pgtable_t pgtable) +{ + free_pointer_table(pgtable, TABLE_PTE); +} + +static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pgtable, + unsigned long address) +{ + free_pointer_table(pgtable, TABLE_PTE); +} + + +static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) +{ + return get_pointer_table(TABLE_PMD); +} + +static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd) +{ + return free_pointer_table(pmd, TABLE_PMD); +} + +static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, + unsigned long address) +{ + return free_pointer_table(pmd, TABLE_PMD); +} + + +static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) +{ + free_pointer_table(pgd, TABLE_PGD); +} + +static inline pgd_t *pgd_alloc(struct mm_struct *mm) +{ + return get_pointer_table(TABLE_PGD); +} + + +static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) +{ + pmd_set(pmd, pte); +} + +static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page) +{ + pmd_set(pmd, page); +} + +static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) +{ + pud_set(pud, pmd); +} + +#endif /* _MOTOROLA_PGALLOC_H */ |