1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _M68K_PAGE_H
 3#define _M68K_PAGE_H
 4
 5#include <linux/const.h>
 6#include <asm/setup.h>
 7#include <asm/page_offset.h>
 8
 9/* PAGE_SHIFT determines the page size */
10#if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE)
11#define PAGE_SHIFT	13
12#else
13#define PAGE_SHIFT	12
14#endif
15#define PAGE_SIZE	(_AC(1, UL) << PAGE_SHIFT)
16#define PAGE_MASK	(~(PAGE_SIZE-1))
17#define PAGE_OFFSET	(PAGE_OFFSET_RAW)
18
19#ifndef __ASSEMBLY__
20
21/*
22 * These are used to make use of C type-checking..
23 */
24#if !defined(CONFIG_MMU) || CONFIG_PGTABLE_LEVELS == 3
25typedef struct { unsigned long pmd; } pmd_t;
26#define pmd_val(x)	((&x)->pmd)
27#define __pmd(x)	((pmd_t) { (x) } )
28#endif
29
30typedef struct { unsigned long pte; } pte_t;
31typedef struct { unsigned long pgd; } pgd_t;
32typedef struct { unsigned long pgprot; } pgprot_t;
33
34#if defined(CONFIG_SUN3)
35/*
36 * Sun3 still uses the asm-generic/pgalloc.h code and thus needs this
37 * definition. It would be possible to unify Sun3 and ColdFire pgalloc and have
38 * all of m68k use the same type.
39 */
40typedef struct page *pgtable_t;
41#else
42typedef pte_t *pgtable_t;
43#endif
44
45#define pte_val(x)	((x).pte)
46#define pgd_val(x)	((x).pgd)
47#define pgprot_val(x)	((x).pgprot)
48
49#define __pte(x)	((pte_t) { (x) } )
50#define __pgd(x)	((pgd_t) { (x) } )
51#define __pgprot(x)	((pgprot_t) { (x) } )
52
53extern unsigned long _rambase;
54extern unsigned long _ramstart;
55extern unsigned long _ramend;
56
57#endif /* !__ASSEMBLY__ */
58
59#ifdef CONFIG_MMU
60#include <asm/page_mm.h>
61#else
62#include <asm/page_no.h>
63#endif
64
 
65#define __phys_to_pfn(paddr)	((unsigned long)((paddr) >> PAGE_SHIFT))
66#define __pfn_to_phys(pfn)	PFN_PHYS(pfn)
 
67
68#include <asm-generic/getorder.h>
69
70#endif /* _M68K_PAGE_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _M68K_PAGE_H
 3#define _M68K_PAGE_H
 4
 5#include <linux/const.h>
 6#include <asm/setup.h>
 7#include <asm/page_offset.h>
 8
 9/* PAGE_SHIFT determines the page size */
10#if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE)
11#define PAGE_SHIFT	13
12#else
13#define PAGE_SHIFT	12
14#endif
15#define PAGE_SIZE	(_AC(1, UL) << PAGE_SHIFT)
16#define PAGE_MASK	(~(PAGE_SIZE-1))
17#define PAGE_OFFSET	(PAGE_OFFSET_RAW)
18
19#ifndef __ASSEMBLY__
20
21/*
22 * These are used to make use of C type-checking..
23 */
24#if !defined(CONFIG_MMU) || CONFIG_PGTABLE_LEVELS == 3
25typedef struct { unsigned long pmd; } pmd_t;
26#define pmd_val(x)	((&x)->pmd)
27#define __pmd(x)	((pmd_t) { (x) } )
28#endif
29
30typedef struct { unsigned long pte; } pte_t;
31typedef struct { unsigned long pgd; } pgd_t;
32typedef struct { unsigned long pgprot; } pgprot_t;
33
34#if defined(CONFIG_SUN3)
35/*
36 * Sun3 still uses the asm-generic/pgalloc.h code and thus needs this
37 * definition. It would be possible to unify Sun3 and ColdFire pgalloc and have
38 * all of m68k use the same type.
39 */
40typedef struct page *pgtable_t;
41#else
42typedef pte_t *pgtable_t;
43#endif
44
45#define pte_val(x)	((x).pte)
46#define pgd_val(x)	((x).pgd)
47#define pgprot_val(x)	((x).pgprot)
48
49#define __pte(x)	((pte_t) { (x) } )
50#define __pgd(x)	((pgd_t) { (x) } )
51#define __pgprot(x)	((pgprot_t) { (x) } )
52
53extern unsigned long _rambase;
54extern unsigned long _ramstart;
55extern unsigned long _ramend;
56
57#endif /* !__ASSEMBLY__ */
58
59#ifdef CONFIG_MMU
60#include <asm/page_mm.h>
61#else
62#include <asm/page_no.h>
63#endif
64
65#ifndef CONFIG_MMU
66#define __phys_to_pfn(paddr)	((unsigned long)((paddr) >> PAGE_SHIFT))
67#define __pfn_to_phys(pfn)	PFN_PHYS(pfn)
68#endif
69
70#include <asm-generic/getorder.h>
71
72#endif /* _M68K_PAGE_H */