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 21 typedef struct { unsigned long pmd; } pmd_t; 22 #define pmd_val(x) ((&x)->pmd) 23 #define __pmd(x) ((pmd_t) { (x) } ) 24 #endif 25 26 typedef struct { unsigned long pte; } pte_t; 27 typedef struct { unsigned long pgd; } pgd_t; 28 typedef 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 */ 36 typedef struct page *pgtable_t; 37 #else 38 typedef 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 49 extern unsigned long _rambase; 50 extern unsigned long _ramstart; 51 extern 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