arch/sparc/include/asm/pgalloc_64.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _SPARC64_PGALLOC_H
   3 #define _SPARC64_PGALLOC_H
   4
   5 #include <linux/kernel.h>
   6 #include <linux/sched.h>
   7 #include <linux/mm.h>
   8 #include <linux/slab.h>
   9
  10 #include <asm/spitfire.h>
  11 #include <asm/cpudata.h>
  12 #include <asm/cacheflush.h>
  13 #include <asm/page.h>
  14
  15 /* Page table allocation/freeing. */
  16
  17 extern struct kmem_cache *pgtable_cache;
  18
  19 static inline void __p4d_populate(p4d_t *p4d, pud_t *pud)
  20 {
  21         p4d_set(p4d, pud);
  22 }
  23
  24 #define p4d_populate(MM, P4D, PUD)      __p4d_populate(P4D, PUD)
  25
  26 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  27 {
  28         return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
  29 }
  30
  31 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  32 {
  33         kmem_cache_free(pgtable_cache, pgd);
  34 }
  35
  36 static inline void __pud_populate(pud_t *pud, pmd_t *pmd)
  37 {
  38         pud_set(pud, pmd);
  39 }
  40
  41 #define pud_populate(MM, PUD, PMD)      __pud_populate(PUD, PMD)
  42
  43 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
  44 {
  45         return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
  46 }
  47
  48 static inline void pud_free(struct mm_struct *mm, pud_t *pud)
  49 {
  50         kmem_cache_free(pgtable_cache, pud);
  51 }
  52
  53 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
  54 {
  55         return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
  56 }
  57
  58 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
  59 {
  60         kmem_cache_free(pgtable_cache, pmd);
  61 }
  62
  63 pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
  64 pgtable_t pte_alloc_one(struct mm_struct *mm);
  65 void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
  66 void pte_free(struct mm_struct *mm, pgtable_t ptepage);
  67
  68 /* arch use pte_free_defer() implementation in arch/sparc/mm/init_64.c */
  69 #define pte_free_defer pte_free_defer
  70 void pte_free_defer(struct mm_struct *mm, pgtable_t pgtable);
  71
  72 #define pmd_populate_kernel(MM, PMD, PTE)       pmd_set(MM, PMD, PTE)
  73 #define pmd_populate(MM, PMD, PTE)              pmd_set(MM, PMD, PTE)
  74
  75 void pgtable_free(void *table, bool is_page);
  76
  77 #ifdef CONFIG_SMP
  78
  79 struct mmu_gather;
  80 void tlb_remove_table(struct mmu_gather *, void *);
  81
  82 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
  83 {
  84         unsigned long pgf = (unsigned long)table;
  85         if (is_page)
  86                 pgf |= 0x1UL;
  87         tlb_remove_table(tlb, (void *)pgf);
  88 }
  89
  90 static inline void __tlb_remove_table(void *_table)
  91 {
  92         void *table = (void *)((unsigned long)_table & ~0x1UL);
  93         bool is_page = false;
  94
  95         if ((unsigned long)_table & 0x1UL)
  96                 is_page = true;
  97         pgtable_free(table, is_page);
  98 }
  99 #else /* CONFIG_SMP */
 100 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
 101 {
 102         pgtable_free(table, is_page);
 103 }
 104 #endif /* !CONFIG_SMP */
 105
 106 static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
 107                                   unsigned long address)
 108 {
 109         pgtable_free_tlb(tlb, pte, true);
 110 }
 111
 112 #define __pmd_free_tlb(tlb, pmd, addr)                \
 113         pgtable_free_tlb(tlb, pmd, false)
 114
 115 #define __pud_free_tlb(tlb, pud, addr)                \
 116         pgtable_free_tlb(tlb, pud, false)
 117
 118 #endif /* _SPARC64_PGALLOC_H */