de9e354e1f
To match what we did to the Motorola MMU routines, change the ColdFire pgalloc. The result is that ColdFire and Sun3 pgalloc are actually very similar and could conceivably be unified. Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Greg Ungerer <gerg@linux-m68k.org> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Tested-by: Greg Ungerer <gerg@linux-m68k.org> Link: https://lore.kernel.org/r/20200131125403.995781825@infradead.org Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/* 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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#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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#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
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VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
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#include <asm-generic/getorder.h>
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#endif /* _M68K_PAGE_H */
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