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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _M68KNOMMU_PGTABLE_H
2#define _M68KNOMMU_PGTABLE_H
3
4#include <asm-generic/4level-fixup.h>
5
6/*
7 * (C) Copyright 2000-2002, Greg Ungerer <gerg@snapgear.com>
8 */
9
10#include <linux/config.h>
11#include <linux/slab.h>
12#include <asm/processor.h>
13#include <asm/page.h>
14#include <asm/io.h>
15
16/*
17 * Trivial page table functions.
18 */
19#define pgd_present(pgd) (1)
20#define pgd_none(pgd) (0)
21#define pgd_bad(pgd) (0)
22#define pgd_clear(pgdp)
23#define kern_addr_valid(addr) (1)
24#define pmd_offset(a, b) ((void *)0)
25
26#define PAGE_NONE __pgprot(0)
27#define PAGE_SHARED __pgprot(0)
28#define PAGE_COPY __pgprot(0)
29#define PAGE_READONLY __pgprot(0)
30#define PAGE_KERNEL __pgprot(0)
31
32extern void paging_init(void);
33#define swapper_pg_dir ((pgd_t *) 0)
34
35#define __swp_type(x) (0)
36#define __swp_offset(x) (0)
37#define __swp_entry(typ,off) ((swp_entry_t) { ((typ) | ((off) << 7)) })
38#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
39#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
40
41static inline int pte_file(pte_t pte) { return 0; }
42
43/*
44 * ZERO_PAGE is a global shared page that is always zero: used
45 * for zero-mapped memory areas etc..
46 */
47#define ZERO_PAGE(vaddr) (virt_to_page(0))
48
49/*
50 * These would be in other places but having them here reduces the diffs.
51 */
52extern unsigned int kobjsize(const void *objp);
53extern int is_in_rom(unsigned long);
54
55/*
56 * No page table caches to initialise.
57 */
58#define pgtable_cache_init() do { } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
60#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
61 remap_pfn_range(vma, vaddr, pfn, size, prot)
62
63#define MK_IOSPACE_PFN(space, pfn) (pfn)
64#define GET_IOSPACE(pfn) 0
65#define GET_PFN(pfn) (pfn)
66
67/*
68 * All 32bit addresses are effectively valid for vmalloc...
69 * Sort of meaningless for non-VM targets.
70 */
71#define VMALLOC_START 0
72#define VMALLOC_END 0xffffffff
73
74#endif /* _M68KNOMMU_PGTABLE_H */