page.h

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#ifndef _H8300_PAGE_H
#define _H8300_PAGE_H

/* PAGE_SHIFT determines the page size */

#define PAGE_SHIFT  (12)
#define PAGE_SIZE   (1UL << PAGE_SHIFT)
#define PAGE_MASK   (~(PAGE_SIZE-1))

#include <asm/setup.h>

#ifndef __ASSEMBLY__
 
#define get_user_page(vaddr)        __get_free_page(GFP_KERNEL)
#define free_user_page(page, addr)  free_page(addr)

#define clear_page(page)    memset((page), 0, PAGE_SIZE)
#define copy_page(to,from)  memcpy((to), (from), PAGE_SIZE)

#define clear_user_page(page, vaddr, pg)    clear_page(page)
#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)

#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
    alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE

/*
 * These are used to make use of C type-checking..
 */
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pmd[16]; } pmd_t;
typedef struct { unsigned long pgd; } pgd_t;
typedef struct { unsigned long pgprot; } pgprot_t;
typedef struct page *pgtable_t;

#define pte_val(x)  ((x).pte)
#define pmd_val(x)  ((&x)->pmd[0])
#define pgd_val(x)  ((x).pgd)
#define pgprot_val(x)   ((x).pgprot)

#define __pte(x)    ((pte_t) { (x) } )
#define __pmd(x)    ((pmd_t) { (x) } )
#define __pgd(x)    ((pgd_t) { (x) } )
#define __pgprot(x) ((pgprot_t) { (x) } )

extern unsigned long memory_start;
extern unsigned long memory_end;

#endif /* !__ASSEMBLY__ */

#include <asm/page_offset.h>

#define PAGE_OFFSET     (PAGE_OFFSET_RAW)

#ifndef __ASSEMBLY__

#define __pa(vaddr)     virt_to_phys(vaddr)
#define __va(paddr)     phys_to_virt((unsigned long)paddr)

#define virt_to_pfn(kaddr)  (__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn)    __va((pfn) << PAGE_SHIFT)

#define MAP_NR(addr)        (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
#define virt_to_page(addr)  (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
#define page_to_virt(page)  ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
#define pfn_valid(page)         (page < max_mapnr)

#define ARCH_PFN_OFFSET     (PAGE_OFFSET >> PAGE_SHIFT)

#define virt_addr_valid(kaddr)  (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
                ((void *)(kaddr) < (void *)memory_end))

#endif /* __ASSEMBLY__ */

#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>

#endif /* _H8300_PAGE_H */