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
   8 #include <asm/pgtsrmmu.h>
   9 #include <asm/pgtable.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 #define check_pgt_cache()       do { } while (0)
  21
  22 pgd_t *get_pgd_fast(void);
  23 static inline void free_pgd_fast(pgd_t *pgd)
  24 {
  25         srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE);
  26 }
  27
  28 #define pgd_free(mm, pgd)       free_pgd_fast(pgd)
  29 #define pgd_alloc(mm)   get_pgd_fast()
  30
  31 static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
  32 {
  33         unsigned long pa = __nocache_pa(pmdp);
  34
  35         set_pte((pte_t *)pgdp, __pte((SRMMU_ET_PTD | (pa >> 4))));
  36 }
  37
  38 #define pgd_populate(MM, PGD, PMD)      pgd_set(PGD, PMD)
  39
  40 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
  41                                    unsigned long address)
  42 {
  43         return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
  44                                  SRMMU_PMD_TABLE_SIZE);
  45 }
  46
  47 static inline void free_pmd_fast(pmd_t * pmd)
  48 {
  49         srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE);
  50 }
  51
  52 #define pmd_free(mm, pmd)               free_pmd_fast(pmd)
  53 #define __pmd_free_tlb(tlb, pmd, addr)  pmd_free((tlb)->mm, pmd)
  54
  55 void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep);
  56 #define pmd_pgtable(pmd) pmd_page(pmd)
  57
  58 void pmd_set(pmd_t *pmdp, pte_t *ptep);
  59 #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE)
  60
  61 pgtable_t pte_alloc_one(struct mm_struct *mm);
  62
  63 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
  64 {
  65         return srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
  66 }
  67
  68
  69 static inline void free_pte_fast(pte_t *pte)
  70 {
  71         srmmu_free_nocache(pte, PTE_SIZE);
  72 }
  73
  74 #define pte_free_kernel(mm, pte)        free_pte_fast(pte)
  75
  76 void pte_free(struct mm_struct * mm, pgtable_t pte);
  77 #define __pte_free_tlb(tlb, pte, addr)  pte_free((tlb)->mm, pte)
  78
  79 #endif /* _SPARC_PGALLOC_H */