73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _M68K_PAGE_H
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#define _M68K_PAGE_H
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#include <linux/const.h>
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#include <asm/setup.h>
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#include <asm/page_offset.h>
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/* PAGE_SHIFT determines the page size */
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#if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE)
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#define PAGE_SHIFT 13
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#else
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#define PAGE_SHIFT 12
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#endif
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#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
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#define PAGE_MASK (~(PAGE_SIZE-1))
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#define PAGE_OFFSET (PAGE_OFFSET_RAW)
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#ifndef __ASSEMBLY__
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/*
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* These are used to make use of C type-checking..
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*/
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#if !defined(CONFIG_MMU) || CONFIG_PGTABLE_LEVELS == 3
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typedef struct { unsigned long pmd; } pmd_t;
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#define pmd_val(x) ((&x)->pmd)
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#define __pmd(x) ((pmd_t) { (x) } )
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#endif
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typedef struct { unsigned long pte; } pte_t;
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typedef struct { unsigned long pgd; } pgd_t;
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typedef struct { unsigned long pgprot; } pgprot_t;
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#if defined(CONFIG_SUN3)
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/*
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* Sun3 still uses the asm-generic/pgalloc.h code and thus needs this
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* definition. It would be possible to unify Sun3 and ColdFire pgalloc and have
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* all of m68k use the same type.
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*/
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typedef struct page *pgtable_t;
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#else
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typedef pte_t *pgtable_t;
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#endif
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#define pte_val(x) ((x).pte)
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#define pgd_val(x) ((x).pgd)
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#define pgprot_val(x) ((x).pgprot)
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#define __pte(x) ((pte_t) { (x) } )
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#define __pgd(x) ((pgd_t) { (x) } )
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#define __pgprot(x) ((pgprot_t) { (x) } )
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extern unsigned long _rambase;
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extern unsigned long _ramstart;
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extern unsigned long _ramend;
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#endif /* !__ASSEMBLY__ */
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#ifdef CONFIG_MMU
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#include <asm/page_mm.h>
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#else
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#include <asm/page_no.h>
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#endif
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#ifndef CONFIG_MMU
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#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT))
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#define __pfn_to_phys(pfn) PFN_PHYS(pfn)
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#endif
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#include <asm-generic/getorder.h>
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#endif /* _M68K_PAGE_H */
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