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 31 extern 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 static inline int pte_file(pte_t pte) { return 0; } 41 42 /* 43 * ZERO_PAGE is a global shared page that is always zero: used 44 * for zero-mapped memory areas etc.. 45 */ 46 #define ZERO_PAGE(vaddr) (virt_to_page(0)) 47 48 /* 49 * These would be in other places but having them here reduces the diffs. 50 */ 51 extern unsigned int kobjsize(const void *objp); 52 53 /* 54 * No page table caches to initialise. 55 */ 56 #define pgtable_cache_init() do { } while (0) 57 58 #define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ 59 remap_pfn_range(vma, vaddr, pfn, size, prot) 60 61 /* 62 * All 32bit addresses are effectively valid for vmalloc... 63 * Sort of meaningless for non-VM targets. 64 */ 65 #define VMALLOC_START 0 66 #define VMALLOC_END 0xffffffff 67 #define KMAP_START 0 68 #define KMAP_END 0xffffffff 69 70 #include <asm-generic/pgtable.h> 71 72 #define check_pgt_cache() do { } while (0) 73 74 #endif /* _M68KNOMMU_PGTABLE_H */ 75