arch/sparc/include/asm/pgalloc_32.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _SPARC_PGALLOC_H
   3 #define _SPARC_PGALLOC_H
   4
   5 #include <linux/kernel.h>
   6 #include <linux/sched.h>
   7 #include <linux/pgtable.h>
   8
   9 #include <asm/pgtsrmmu.h>
  10 #include <asm/vaddrs.h>
  11 #include <asm/page.h>
  12
  13 struct page;
  14
  15 void *srmmu_get_nocache(int size, int align);
  16 void srmmu_free_nocache(void *addr, int size);
  17
  18 extern struct resource sparc_iomap;
  19
  20 pgd_t *get_pgd_fast(void);
  21 static inline void free_pgd_fast(pgd_t *pgd)
  22 {
  23         srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE);
  24 }
  25
  26 #define pgd_free(mm, pgd)       free_pgd_fast(pgd)
  27 #define pgd_alloc(mm)   get_pgd_fast()
  28
  29 static inline void pud_set(pud_t * pudp, pmd_t * pmdp)
  30 {
  31         unsigned long pa = __nocache_pa(pmdp);
  32
  33         set_pte((pte_t *)pudp, __pte((SRMMU_ET_PTD | (pa >> 4))));
  34 }
  35
  36 #define pud_populate(MM, PGD, PMD)      pud_set(PGD, PMD)
  37
  38 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
  39                                    unsigned long address)
  40 {
  41         return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
  42                                  SRMMU_PMD_TABLE_SIZE);
  43 }
  44
  45 static inline void free_pmd_fast(pmd_t * pmd)
  46 {
  47         srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE);
  48 }
  49
  50 #define pmd_free(mm, pmd)               free_pmd_fast(pmd)
  51 #define __pmd_free_tlb(tlb, pmd, addr)  pmd_free((tlb)->mm, pmd)
  52
  53 #define pmd_populate(mm, pmd, pte)      pmd_set(pmd, pte)
  54
  55 void pmd_set(pmd_t *pmdp, pte_t *ptep);
  56 #define pmd_populate_kernel             pmd_populate
  57
  58 pgtable_t pte_alloc_one(struct mm_struct *mm);
  59
  60 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
  61 {
  62         return srmmu_get_nocache(SRMMU_PTE_TABLE_SIZE,
  63                                  SRMMU_PTE_TABLE_SIZE);
  64 }
  65
  66
  67 static inline void free_pte_fast(pte_t *pte)
  68 {
  69         srmmu_free_nocache(pte, SRMMU_PTE_TABLE_SIZE);
  70 }
  71
  72 #define pte_free_kernel(mm, pte)        free_pte_fast(pte)
  73
  74 void pte_free(struct mm_struct * mm, pgtable_t pte);
  75 #define __pte_free_tlb(tlb, pte, addr)  pte_free((tlb)->mm, pte)
  76
  77 #endif /* _SPARC_PGALLOC_H */