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 typedef struct { unsigned long pte; } pte_t; 25 typedef struct { unsigned long pmd[16]; } pmd_t; 26 typedef struct { unsigned long pgd; } pgd_t; 27 typedef struct { unsigned long pgprot; } pgprot_t; 28 typedef struct page *pgtable_t; 29 30 #define pte_val(x) ((x).pte) 31 #define pmd_val(x) ((&x)->pmd[0]) 32 #define pgd_val(x) ((x).pgd) 33 #define pgprot_val(x) ((x).pgprot) 34 35 #define __pte(x) ((pte_t) { (x) } ) 36 #define __pmd(x) ((pmd_t) { { (x) }, }) 37 #define __pgd(x) ((pgd_t) { (x) } ) 38 #define __pgprot(x) ((pgprot_t) { (x) } ) 39 40 extern unsigned long _rambase; 41 extern unsigned long _ramstart; 42 extern unsigned long _ramend; 43 44 #endif /* !__ASSEMBLY__ */ 45 46 #ifdef CONFIG_MMU 47 #include <asm/page_mm.h> 48 #else 49 #include <asm/page_no.h> 50 #endif 51 52 #define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) 53 #define __pfn_to_phys(pfn) PFN_PHYS(pfn) 54 55 #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ 56 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) 57 58 #include <asm-generic/getorder.h> 59 60 #endif /* _M68K_PAGE_H */ 61