1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _M68KNOMMU_PGTABLE_H
 3#define _M68KNOMMU_PGTABLE_H
 4
 5#include <asm-generic/pgtable-nopud.h>
 6
 7/*
 8 * (C) Copyright 2000-2002, Greg Ungerer <gerg@snapgear.com>
 9 */
10
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	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#define swapper_pg_dir ((pgd_t *) 0)
32
 
 
 
 
 
 
33/*
34 * ZERO_PAGE is a global shared page that is always zero: used
35 * for zero-mapped memory areas etc..
36 */
37extern void *empty_zero_page;
38#define ZERO_PAGE(vaddr)	(virt_to_page(empty_zero_page))
39
40/*
41 * All 32bit addresses are effectively valid for vmalloc...
42 * Sort of meaningless for non-VM targets.
43 */
44#define	VMALLOC_START	0
45#define	VMALLOC_END	0xffffffff
46#define	KMAP_START	0
47#define	KMAP_END	0xffffffff
48
49#endif /* _M68KNOMMU_PGTABLE_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _M68KNOMMU_PGTABLE_H
 3#define _M68KNOMMU_PGTABLE_H
 4
 5#include <asm-generic/pgtable-nopud.h>
 6
 7/*
 8 * (C) Copyright 2000-2002, Greg Ungerer <gerg@snapgear.com>
 9 */
10
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
41/*
42 * ZERO_PAGE is a global shared page that is always zero: used
43 * for zero-mapped memory areas etc..
44 */
45#define ZERO_PAGE(vaddr)	(virt_to_page(0))
 
46
47/*
48 * All 32bit addresses are effectively valid for vmalloc...
49 * Sort of meaningless for non-VM targets.
50 */
51#define	VMALLOC_START	0
52#define	VMALLOC_END	0xffffffff
53#define	KMAP_START	0
54#define	KMAP_END	0xffffffff
55
56#endif /* _M68KNOMMU_PGTABLE_H */