1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _M68K_PAGE_H 3*4882a593Smuzhiyun #define _M68K_PAGE_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <linux/const.h> 6*4882a593Smuzhiyun #include <asm/setup.h> 7*4882a593Smuzhiyun #include <asm/page_offset.h> 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun /* PAGE_SHIFT determines the page size */ 10*4882a593Smuzhiyun #if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE) 11*4882a593Smuzhiyun #define PAGE_SHIFT 13 12*4882a593Smuzhiyun #else 13*4882a593Smuzhiyun #define PAGE_SHIFT 12 14*4882a593Smuzhiyun #endif 15*4882a593Smuzhiyun #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) 16*4882a593Smuzhiyun #define PAGE_MASK (~(PAGE_SIZE-1)) 17*4882a593Smuzhiyun #define PAGE_OFFSET (PAGE_OFFSET_RAW) 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun #ifndef __ASSEMBLY__ 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun /* 22*4882a593Smuzhiyun * These are used to make use of C type-checking.. 23*4882a593Smuzhiyun */ 24*4882a593Smuzhiyun #if !defined(CONFIG_MMU) || CONFIG_PGTABLE_LEVELS == 3 25*4882a593Smuzhiyun typedef struct { unsigned long pmd; } pmd_t; 26*4882a593Smuzhiyun #define pmd_val(x) ((&x)->pmd) 27*4882a593Smuzhiyun #define __pmd(x) ((pmd_t) { (x) } ) 28*4882a593Smuzhiyun #endif 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun typedef struct { unsigned long pte; } pte_t; 31*4882a593Smuzhiyun typedef struct { unsigned long pgd; } pgd_t; 32*4882a593Smuzhiyun typedef struct { unsigned long pgprot; } pgprot_t; 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun #if defined(CONFIG_SUN3) 35*4882a593Smuzhiyun /* 36*4882a593Smuzhiyun * Sun3 still uses the asm-generic/pgalloc.h code and thus needs this 37*4882a593Smuzhiyun * definition. It would be possible to unify Sun3 and ColdFire pgalloc and have 38*4882a593Smuzhiyun * all of m68k use the same type. 39*4882a593Smuzhiyun */ 40*4882a593Smuzhiyun typedef struct page *pgtable_t; 41*4882a593Smuzhiyun #else 42*4882a593Smuzhiyun typedef pte_t *pgtable_t; 43*4882a593Smuzhiyun #endif 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun #define pte_val(x) ((x).pte) 46*4882a593Smuzhiyun #define pgd_val(x) ((x).pgd) 47*4882a593Smuzhiyun #define pgprot_val(x) ((x).pgprot) 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun #define __pte(x) ((pte_t) { (x) } ) 50*4882a593Smuzhiyun #define __pgd(x) ((pgd_t) { (x) } ) 51*4882a593Smuzhiyun #define __pgprot(x) ((pgprot_t) { (x) } ) 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun extern unsigned long _rambase; 54*4882a593Smuzhiyun extern unsigned long _ramstart; 55*4882a593Smuzhiyun extern unsigned long _ramend; 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun #endif /* !__ASSEMBLY__ */ 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun #ifdef CONFIG_MMU 60*4882a593Smuzhiyun #include <asm/page_mm.h> 61*4882a593Smuzhiyun #else 62*4882a593Smuzhiyun #include <asm/page_no.h> 63*4882a593Smuzhiyun #endif 64*4882a593Smuzhiyun 65*4882a593Smuzhiyun #define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) 66*4882a593Smuzhiyun #define __pfn_to_phys(pfn) PFN_PHYS(pfn) 67*4882a593Smuzhiyun 68*4882a593Smuzhiyun #include <asm-generic/getorder.h> 69*4882a593Smuzhiyun 70*4882a593Smuzhiyun #endif /* _M68K_PAGE_H */ 71