LXR linux/arch/sparc/include/asm/pgalloc

   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
  13struct page;
  14
  15void *srmmu_get_nocache(int size, int align);
  16void srmmu_free_nocache(void *addr, int size);
  17
  18extern struct resource sparc_iomap;
  19
  20#define check_pgt_cache()       do { } while (0)
  21
  22pgd_t *get_pgd_fast(void);
  23static 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
  31static 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
  40static 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
  47static 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
  55void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep);
  56#define pmd_pgtable(pmd) pmd_page(pmd)
  57
  58void pmd_set(pmd_t *pmdp, pte_t *ptep);
  59#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE)
  60
  61pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address);
  62
  63static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
  64                                          unsigned long address)
  65{
  66        return srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
  67}
  68
  69
  70static inline void free_pte_fast(pte_t *pte)
  71{
  72        srmmu_free_nocache(pte, PTE_SIZE);
  73}
  74
  75#define pte_free_kernel(mm, pte)        free_pte_fast(pte)
  76
  77void pte_free(struct mm_struct * mm, pgtable_t pte);
  78#define __pte_free_tlb(tlb, pte, addr)  pte_free((tlb)->mm, pte)
  79
  80#endif /* _SPARC_PGALLOC_H */
  81