LXR linux/arch/m68k/include/asm/motorola

   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
   8extern void mmu_page_ctor(void *page);
   9extern void mmu_page_dtor(void *page);
  10
  11enum m68k_table_types {
  12        TABLE_PGD = 0,
  13        TABLE_PMD = 0, /* same size as PGD */
  14        TABLE_PTE = 1,
  15};
  16
  17extern void init_pointer_table(void *table, int type);
  18extern void *get_pointer_table(int type);
  19extern 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
  27static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
  28{
  29        return get_pointer_table(TABLE_PTE);
  30}
  31
  32static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
  33{
  34        free_pointer_table(pte, TABLE_PTE);
  35}
  36
  37static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
  38{
  39        return get_pointer_table(TABLE_PTE);
  40}
  41
  42static inline void pte_free(struct mm_struct *mm, pgtable_t pgtable)
  43{
  44        free_pointer_table(pgtable, TABLE_PTE);
  45}
  46
  47static 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
  54static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
  55{
  56        return get_pointer_table(TABLE_PMD);
  57}
  58
  59static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
  60{
  61        return free_pointer_table(pmd, TABLE_PMD);
  62}
  63
  64static 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
  71static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  72{
  73        free_pointer_table(pgd, TABLE_PGD);
  74}
  75
  76static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  77{
  78        return get_pointer_table(TABLE_PGD);
  79}
  80
  81
  82static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
  83{
  84        pmd_set(pmd, pte);
  85}
  86
  87static 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
  93static 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