diff options
Diffstat (limited to 'arch/m68k/include/asm/page.h')
-rw-r--r-- | arch/m68k/include/asm/page.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/page.h b/arch/m68k/include/asm/page.h new file mode 100644 index 000000000..2614a1206 --- /dev/null +++ b/arch/m68k/include/asm/page.h @@ -0,0 +1,70 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _M68K_PAGE_H +#define _M68K_PAGE_H + +#include <linux/const.h> +#include <asm/setup.h> +#include <asm/page_offset.h> + +/* PAGE_SHIFT determines the page size */ +#if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE) +#define PAGE_SHIFT 13 +#else +#define PAGE_SHIFT 12 +#endif +#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) +#define PAGE_MASK (~(PAGE_SIZE-1)) +#define PAGE_OFFSET (PAGE_OFFSET_RAW) + +#ifndef __ASSEMBLY__ + +/* + * These are used to make use of C type-checking.. + */ +#if !defined(CONFIG_MMU) || CONFIG_PGTABLE_LEVELS == 3 +typedef struct { unsigned long pmd; } pmd_t; +#define pmd_val(x) ((&x)->pmd) +#define __pmd(x) ((pmd_t) { (x) } ) +#endif + +typedef struct { unsigned long pte; } pte_t; +typedef struct { unsigned long pgd; } pgd_t; +typedef struct { unsigned long pgprot; } pgprot_t; + +#if defined(CONFIG_SUN3) +/* + * Sun3 still uses the asm-generic/pgalloc.h code and thus needs this + * definition. It would be possible to unify Sun3 and ColdFire pgalloc and have + * all of m68k use the same type. + */ +typedef struct page *pgtable_t; +#else +typedef pte_t *pgtable_t; +#endif + +#define pte_val(x) ((x).pte) +#define pgd_val(x) ((x).pgd) +#define pgprot_val(x) ((x).pgprot) + +#define __pte(x) ((pte_t) { (x) } ) +#define __pgd(x) ((pgd_t) { (x) } ) +#define __pgprot(x) ((pgprot_t) { (x) } ) + +extern unsigned long _rambase; +extern unsigned long _ramstart; +extern unsigned long _ramend; + +#endif /* !__ASSEMBLY__ */ + +#ifdef CONFIG_MMU +#include <asm/page_mm.h> +#else +#include <asm/page_no.h> +#endif + +#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) +#define __pfn_to_phys(pfn) PFN_PHYS(pfn) + +#include <asm-generic/getorder.h> + +#endif /* _M68K_PAGE_H */ |