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1da177e4 LT |
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/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 | ||
32 | extern 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 | ||
41 | static 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 | */ | |
52 | extern unsigned int kobjsize(const void *objp); | |
53 | extern int is_in_rom(unsigned long); | |
54 | ||
55 | /* | |
56 | * No page table caches to initialise. | |
57 | */ | |
58 | #define pgtable_cache_init() do { } while (0) | |
59 | #define io_remap_page_range(vma, vaddr, paddr, size, prot) \ | |
60 | remap_pfn_range(vma, vaddr, (paddr) >> PAGE_SHIFT, size, prot) | |
61 | ||
62 | #define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ | |
63 | remap_pfn_range(vma, vaddr, pfn, size, prot) | |
64 | ||
65 | #define MK_IOSPACE_PFN(space, pfn) (pfn) | |
66 | #define GET_IOSPACE(pfn) 0 | |
67 | #define GET_PFN(pfn) (pfn) | |
68 | ||
69 | /* | |
70 | * All 32bit addresses are effectively valid for vmalloc... | |
71 | * Sort of meaningless for non-VM targets. | |
72 | */ | |
73 | #define VMALLOC_START 0 | |
74 | #define VMALLOC_END 0xffffffff | |
75 | ||
76 | #endif /* _M68KNOMMU_PGTABLE_H */ |