include/asm-h8300/pgtable.h

   1 #ifndef _H8300_PGTABLE_H
   2 #define _H8300_PGTABLE_H
   3
   4 #include <asm-generic/4level-fixup.h>
   5
   6 #include <linux/config.h>
   7 #include <linux/slab.h>
   8 #include <asm/processor.h>
   9 #include <asm/page.h>
  10 #include <asm/io.h>
  11
  12 #define pgd_present(pgd)     (1)       /* pages are always present on NO_MM */
  13 #define pgd_none(pgd)           (0)
  14 #define pgd_bad(pgd)            (0)
  15 #define pgd_clear(pgdp)
  16 #define kern_addr_valid(addr)   (1)
  17 #define pmd_offset(a, b)        ((void *)0)
  18 #define pmd_none(pmd)           (1)
  19 #define pgd_offset_k(adrdress)  ((pgd_t *)0)
  20 #define pte_offset_kernel(dir, address) ((pte_t *)0)
  21
  22 #define PAGE_NONE               __pgprot(0)    /* these mean nothing to NO_MM */
  23 #define PAGE_SHARED             __pgprot(0)    /* these mean nothing to NO_MM */
  24 #define PAGE_COPY               __pgprot(0)    /* these mean nothing to NO_MM */
  25 #define PAGE_READONLY   __pgprot(0)    /* these mean nothing to NO_MM */
  26 #define PAGE_KERNEL             __pgprot(0)    /* these mean nothing to NO_MM */
  27
  28 extern void paging_init(void);
  29 #define swapper_pg_dir ((pgd_t *) 0)
  30
  31 #define __swp_type(x)           (0)
  32 #define __swp_offset(x)         (0)
  33 #define __swp_entry(typ,off)    ((swp_entry_t) { ((typ) | ((off) << 7)) })
  34 #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
  35 #define __swp_entry_to_pte(x)   ((pte_t) { (x).val })
  36
  37 static inline int pte_file(pte_t pte) { return 0; }
  38
  39 /*
  40  * ZERO_PAGE is a global shared page that is always zero: used
  41  * for zero-mapped memory areas etc..
  42  */
  43 #define ZERO_PAGE(vaddr)        (virt_to_page(0))
  44
  45 /*
  46  * These would be in other places but having them here reduces the diffs.
  47  */
  48 extern unsigned int kobjsize(const void *objp);
  49 extern int is_in_rom(unsigned long);
  50
  51 /*
  52  * No page table caches to initialise
  53  */
  54 #define pgtable_cache_init()   do { } while (0)
  55 #define io_remap_page_range(vma, vaddr, paddr, size, prot)              \
  56                 remap_pfn_range(vma, vaddr, (paddr) >> PAGE_SHIFT, size, prot)
  57
  58 #define io_remap_pfn_range(vma, vaddr, pfn, size, prot)         \
  59                 remap_pfn_range(vma, vaddr, pfn, size, prot)
  60
  61 #define MK_IOSPACE_PFN(space, pfn)      (pfn)
  62 #define GET_IOSPACE(pfn)                0
  63 #define GET_PFN(pfn)                    (pfn)
  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 /*
  73  * All 32bit addresses are effectively valid for vmalloc...
  74  * Sort of meaningless for non-VM targets.
  75  */
  76 #define VMALLOC_START   0
  77 #define VMALLOC_END     0xffffffff
  78
  79 #endif /* _H8300_PGTABLE_H */