linux/arch/h8300/include/asm/pgtable.h
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   1#ifndef _H8300_PGTABLE_H
   2#define _H8300_PGTABLE_H
   3
   4#include <asm-generic/4level-fixup.h>
   5
   6#include <linux/slab.h>
   7#include <asm/processor.h>
   8#include <asm/page.h>
   9#include <asm/io.h>
  10
  11#define pgd_present(pgd)     (1)       /* pages are always present on NO_MM */
  12#define pgd_none(pgd)           (0)
  13#define pgd_bad(pgd)            (0)
  14#define pgd_clear(pgdp)
  15#define kern_addr_valid(addr)   (1)
  16#define pmd_offset(a, b)        ((void *)0)
  17#define pmd_none(pmd)           (1)
  18#define pgd_offset_k(adrdress)  ((pgd_t *)0)
  19#define pte_offset_kernel(dir, address) ((pte_t *)0)
  20
  21#define PAGE_NONE               __pgprot(0)    /* these mean nothing to NO_MM */
  22#define PAGE_SHARED             __pgprot(0)    /* these mean nothing to NO_MM */
  23#define PAGE_COPY               __pgprot(0)    /* these mean nothing to NO_MM */
  24#define PAGE_READONLY   __pgprot(0)    /* these mean nothing to NO_MM */
  25#define PAGE_KERNEL             __pgprot(0)    /* these mean nothing to NO_MM */
  26
  27extern void paging_init(void);
  28#define swapper_pg_dir ((pgd_t *) 0)
  29
  30#define __swp_type(x)           (0)
  31#define __swp_offset(x)         (0)
  32#define __swp_entry(typ,off)    ((swp_entry_t) { ((typ) | ((off) << 7)) })
  33#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
  34#define __swp_entry_to_pte(x)   ((pte_t) { (x).val })
  35
  36static inline int pte_file(pte_t pte) { return 0; }
  37
  38/*
  39 * ZERO_PAGE is a global shared page that is always zero: used
  40 * for zero-mapped memory areas etc..
  41 */
  42#define ZERO_PAGE(vaddr)        (virt_to_page(0))
  43
  44/*
  45 * These would be in other places but having them here reduces the diffs.
  46 */
  47extern unsigned int kobjsize(const void *objp);
  48extern int is_in_rom(unsigned long);
  49
  50/*
  51 * No page table caches to initialise
  52 */
  53#define pgtable_cache_init()   do { } while (0)
  54
  55#define io_remap_pfn_range(vma, vaddr, pfn, size, prot)         \
  56                remap_pfn_range(vma, vaddr, pfn, size, prot)
  57
  58/*
  59 * All 32bit addresses are effectively valid for vmalloc...
  60 * Sort of meaningless for non-VM targets.
  61 */
  62#define VMALLOC_START   0
  63#define VMALLOC_END     0xffffffff
  64
  65/*
  66 * All 32bit addresses are effectively valid for vmalloc...
  67 * Sort of meaningless for non-VM targets.
  68 */
  69#define VMALLOC_START   0
  70#define VMALLOC_END     0xffffffff
  71
  72#define arch_enter_lazy_cpu_mode()    do {} while (0)
  73#endif /* _H8300_PGTABLE_H */
  74
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