arch/microblaze/include/asm/pgalloc.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
   4  * Copyright (C) 2008-2009 PetaLogix
   5  * Copyright (C) 2006 Atmark Techno, Inc.
   6  */
   7
   8 #ifndef _ASM_MICROBLAZE_PGALLOC_H
   9 #define _ASM_MICROBLAZE_PGALLOC_H
  10
  11 #ifdef CONFIG_MMU
  12
  13 #include <linux/kernel.h>       /* For min/max macros */
  14 #include <linux/highmem.h>
  15 #include <linux/pgtable.h>
  16 #include <asm/setup.h>
  17 #include <asm/io.h>
  18 #include <asm/page.h>
  19 #include <asm/cache.h>
  20
  21 #define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL
  22 #include <asm-generic/pgalloc.h>
  23
  24 extern void __bad_pte(pmd_t *pmd);
  25
  26 static inline pgd_t *get_pgd(void)
  27 {
  28         return (pgd_t *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, 0);
  29 }
  30
  31 static inline void free_pgd(pgd_t *pgd)
  32 {
  33         free_page((unsigned long)pgd);
  34 }
  35
  36 #define pgd_free(mm, pgd)       free_pgd(pgd)
  37 #define pgd_alloc(mm)           get_pgd()
  38
  39 #define pmd_pgtable(pmd)        pmd_page(pmd)
  40
  41 extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
  42
  43 #define __pte_free_tlb(tlb, pte, addr)  pte_free((tlb)->mm, (pte))
  44
  45 #define pmd_populate(mm, pmd, pte) \
  46                         (pmd_val(*(pmd)) = (unsigned long)page_address(pte))
  47
  48 #define pmd_populate_kernel(mm, pmd, pte) \
  49                 (pmd_val(*(pmd)) = (unsigned long) (pte))
  50
  51 #endif /* CONFIG_MMU */
  52
  53 #endif /* _ASM_MICROBLAZE_PGALLOC_H */