Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#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/slab.h>
11#include <asm/processor.h>
12#include <asm/page.h>
13#include <asm/io.h>
14
15/*
16 * Trivial page table functions.
17 */
18#define pgd_present(pgd) (1)
19#define pgd_none(pgd) (0)
20#define pgd_bad(pgd) (0)
21#define pgd_clear(pgdp)
22#define kern_addr_valid(addr) (1)
23#define pmd_offset(a, b) ((void *)0)
24
25#define PAGE_NONE __pgprot(0)
26#define PAGE_SHARED __pgprot(0)
27#define PAGE_COPY __pgprot(0)
28#define PAGE_READONLY __pgprot(0)
29#define PAGE_KERNEL __pgprot(0)
30
31extern void paging_init(void);
32#define swapper_pg_dir ((pgd_t *) 0)
33
34#define __swp_type(x) (0)
35#define __swp_offset(x) (0)
36#define __swp_entry(typ,off) ((swp_entry_t) { ((typ) | ((off) << 7)) })
37#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
38#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
39
40/*
41 * ZERO_PAGE is a global shared page that is always zero: used
42 * for zero-mapped memory areas etc..
43 */
44#define ZERO_PAGE(vaddr) (virt_to_page(0))
45
46/*
47 * No page table caches to initialise.
48 */
49#define pgtable_cache_init() do { } while (0)
50
51/*
52 * All 32bit addresses are effectively valid for vmalloc...
53 * Sort of meaningless for non-VM targets.
54 */
55#define VMALLOC_START 0
56#define VMALLOC_END 0xffffffff
57#define KMAP_START 0
58#define KMAP_END 0xffffffff
59
60#include <asm-generic/pgtable.h>
61
62#define check_pgt_cache() do { } while (0)
63
64#endif /* _M68KNOMMU_PGTABLE_H */