page.h (1728B)
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 */ 24#if !defined(CONFIG_MMU) || CONFIG_PGTABLE_LEVELS == 3 25typedef struct { unsigned long pmd; } pmd_t; 26#define pmd_val(x) ((&x)->pmd) 27#define __pmd(x) ((pmd_t) { (x) } ) 28#endif 29 30typedef struct { unsigned long pte; } pte_t; 31typedef struct { unsigned long pgd; } pgd_t; 32typedef struct { unsigned long pgprot; } pgprot_t; 33 34#if defined(CONFIG_SUN3) 35/* 36 * Sun3 still uses the asm-generic/pgalloc.h code and thus needs this 37 * definition. It would be possible to unify Sun3 and ColdFire pgalloc and have 38 * all of m68k use the same type. 39 */ 40typedef struct page *pgtable_t; 41#else 42typedef pte_t *pgtable_t; 43#endif 44 45#define pte_val(x) ((x).pte) 46#define pgd_val(x) ((x).pgd) 47#define pgprot_val(x) ((x).pgprot) 48 49#define __pte(x) ((pte_t) { (x) } ) 50#define __pgd(x) ((pgd_t) { (x) } ) 51#define __pgprot(x) ((pgprot_t) { (x) } ) 52 53extern unsigned long _rambase; 54extern unsigned long _ramstart; 55extern unsigned long _ramend; 56 57#endif /* !__ASSEMBLY__ */ 58 59#ifdef CONFIG_MMU 60#include <asm/page_mm.h> 61#else 62#include <asm/page_no.h> 63#endif 64 65#ifndef CONFIG_MMU 66#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) 67#define __pfn_to_phys(pfn) PFN_PHYS(pfn) 68#endif 69 70#include <asm-generic/getorder.h> 71 72#endif /* _M68K_PAGE_H */