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pgtable.h

#ifndef _M68KNOMMU_PGTABLE_H
#define _M68KNOMMU_PGTABLE_H

#include <asm-generic/4level-fixup.h>

/*
 * (C) Copyright 2000-2002, Greg Ungerer <gerg@snapgear.com>
 */

#include <linux/slab.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/io.h>

/*
 * Trivial page table functions.
 */
#define pgd_present(pgd)      (1)
#define pgd_none(pgd)         (0)
#define pgd_bad(pgd)          (0)
#define pgd_clear(pgdp)
#define kern_addr_valid(addr) (1)
#define     pmd_offset(a, b)  ((void *)0)

#define PAGE_NONE __pgprot(0)
#define PAGE_SHARED     __pgprot(0)
#define PAGE_COPY __pgprot(0)
#define PAGE_READONLY   __pgprot(0)
#define PAGE_KERNEL     __pgprot(0)

extern void paging_init(void);
#define swapper_pg_dir ((pgd_t *) 0)

#define __swp_type(x)         (0)
#define __swp_offset(x)       (0)
#define __swp_entry(typ,off)  ((swp_entry_t) { ((typ) | ((off) << 7)) })
#define __pte_to_swp_entry(pte)     ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })

static inline int pte_file(pte_t pte) { return 0; }

/*
 * ZERO_PAGE is a global shared page that is always zero: used
 * for zero-mapped memory areas etc..
 */
#define ZERO_PAGE(vaddr)      (virt_to_page(0))

/*
 * These would be in other places but having them here reduces the diffs.
 */
extern unsigned int kobjsize(const void *objp);

/*
 * No page table caches to initialise.
 */
#define pgtable_cache_init()  do { } while (0)

#define io_remap_pfn_range(vma, vaddr, pfn, size, prot)           \
            remap_pfn_range(vma, vaddr, pfn, size, prot)

/*
 * All 32bit addresses are effectively valid for vmalloc...
 * Sort of meaningless for non-VM targets.
 */
#define     VMALLOC_START     0
#define     VMALLOC_END 0xffffffff

#include <asm-generic/pgtable.h>

#endif /* _M68KNOMMU_PGTABLE_H */

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