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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 */
24typedef struct { unsigned long pte; } pte_t;
25typedef struct { unsigned long pmd[16]; } pmd_t;
26typedef struct { unsigned long pgd; } pgd_t;
27typedef struct { unsigned long pgprot; } pgprot_t;
28typedef struct page *pgtable_t;
29
30#define pte_val(x) ((x).pte)
31#define pmd_val(x) ((&x)->pmd[0])
32#define pgd_val(x) ((x).pgd)
33#define pgprot_val(x) ((x).pgprot)
34
35#define __pte(x) ((pte_t) { (x) } )
36#define __pmd(x) ((pmd_t) { { (x) }, })
37#define __pgd(x) ((pgd_t) { (x) } )
38#define __pgprot(x) ((pgprot_t) { (x) } )
39
40extern unsigned long _rambase;
41extern unsigned long _ramstart;
42extern unsigned long _ramend;
43
44#endif /* !__ASSEMBLY__ */
45
46#ifdef CONFIG_MMU
47#include <asm/page_mm.h>
48#else
49#include <asm/page_no.h>
50#endif
51
52#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT))
53#define __pfn_to_phys(pfn) PFN_PHYS(pfn)
54
55#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
56 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
57
58#include <asm-generic/getorder.h>
59
60#endif /* _M68K_PAGE_H */