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 40static 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 */ 51extern 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/* 59 * All 32bit addresses are effectively valid for vmalloc... 60 * Sort of meaningless for non-VM targets. 61 */ 62#define VMALLOC_START 0 63#define VMALLOC_END 0xffffffff 64#define KMAP_START 0 65#define KMAP_END 0xffffffff 66 67#include <asm-generic/pgtable.h> 68 69#define check_pgt_cache() do { } while (0) 70 71#endif /* _M68KNOMMU_PGTABLE_H */ 72