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