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