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 25 typedef struct { unsigned long pmd; } pmd_t; 26 #define pmd_val(x) ((&x)->pmd) 27 #define __pmd(x) ((pmd_t) { (x) } ) 28 #endif 29 30 typedef struct { unsigned long pte; } pte_t; 31 typedef struct { unsigned long pgd; } pgd_t; 32 typedef 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 */ 40 typedef struct page *pgtable_t; 41 #else 42 typedef 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 53 extern unsigned long _rambase; 54 extern unsigned long _ramstart; 55 extern 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 #define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) 66 #define __pfn_to_phys(pfn) PFN_PHYS(pfn) 67 68 #include <asm-generic/getorder.h> 69 70 #endif /* _M68K_PAGE_H */ 71