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[16]; } pmd_t; 26 #define pmd_val(x) ((&x)->pmd[0]) 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 typedef struct page *pgtable_t; 34 35 #define pte_val(x) ((x).pte) 36 #define pgd_val(x) ((x).pgd) 37 #define pgprot_val(x) ((x).pgprot) 38 39 #define __pte(x) ((pte_t) { (x) } ) 40 #define __pgd(x) ((pgd_t) { (x) } ) 41 #define __pgprot(x) ((pgprot_t) { (x) } ) 42 43 extern unsigned long _rambase; 44 extern unsigned long _ramstart; 45 extern unsigned long _ramend; 46 47 #endif /* !__ASSEMBLY__ */ 48 49 #ifdef CONFIG_MMU 50 #include <asm/page_mm.h> 51 #else 52 #include <asm/page_no.h> 53 #endif 54 55 #define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) 56 #define __pfn_to_phys(pfn) PFN_PHYS(pfn) 57 58 #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ 59 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) 60 61 #include <asm-generic/getorder.h> 62 63 #endif /* _M68K_PAGE_H */ 64