include/asm-h8300/pgtable.h

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