Logo Search packages:      
Sourcecode: linux version File versions

page.h

#ifndef _M68KNOMMU_PAGE_H
#define _M68KNOMMU_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((void *)(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 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_to_page(pfn)      virt_to_page(pfn_to_virt(pfn))
#define page_to_pfn(page)     virt_to_pfn(page_to_virt(page))
#define pfn_valid(pfn)          ((pfn) < max_mapnr)

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

#endif /* __ASSEMBLY__ */

#include <asm-generic/page.h>

#endif /* _M68KNOMMU_PAGE_H */

Generated by  Doxygen 1.6.0   Back to index