1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _ALPHA_PAGE_H 3*4882a593Smuzhiyun #define _ALPHA_PAGE_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <linux/const.h> 6*4882a593Smuzhiyun #include <asm/pal.h> 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun /* PAGE_SHIFT determines the page size */ 9*4882a593Smuzhiyun #define PAGE_SHIFT 13 10*4882a593Smuzhiyun #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) 11*4882a593Smuzhiyun #define PAGE_MASK (~(PAGE_SIZE-1)) 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #ifndef __ASSEMBLY__ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define STRICT_MM_TYPECHECKS 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun extern void clear_page(void *page); 18*4882a593Smuzhiyun #define clear_user_page(page, vaddr, pg) clear_page(page) 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun #define alloc_zeroed_user_highpage_movable(vma, vaddr) \ 21*4882a593Smuzhiyun alloc_page_vma(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, vma, vmaddr) 22*4882a593Smuzhiyun #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE_MOVABLE 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun extern void copy_page(void * _to, void * _from); 25*4882a593Smuzhiyun #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun #ifdef STRICT_MM_TYPECHECKS 28*4882a593Smuzhiyun /* 29*4882a593Smuzhiyun * These are used to make use of C type-checking.. 30*4882a593Smuzhiyun */ 31*4882a593Smuzhiyun typedef struct { unsigned long pte; } pte_t; 32*4882a593Smuzhiyun typedef struct { unsigned long pmd; } pmd_t; 33*4882a593Smuzhiyun typedef struct { unsigned long pgd; } pgd_t; 34*4882a593Smuzhiyun typedef struct { unsigned long pgprot; } pgprot_t; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun #define pte_val(x) ((x).pte) 37*4882a593Smuzhiyun #define pmd_val(x) ((x).pmd) 38*4882a593Smuzhiyun #define pgd_val(x) ((x).pgd) 39*4882a593Smuzhiyun #define pgprot_val(x) ((x).pgprot) 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun #define __pte(x) ((pte_t) { (x) } ) 42*4882a593Smuzhiyun #define __pmd(x) ((pmd_t) { (x) } ) 43*4882a593Smuzhiyun #define __pgd(x) ((pgd_t) { (x) } ) 44*4882a593Smuzhiyun #define __pgprot(x) ((pgprot_t) { (x) } ) 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun #else 47*4882a593Smuzhiyun /* 48*4882a593Smuzhiyun * .. while these make it easier on the compiler 49*4882a593Smuzhiyun */ 50*4882a593Smuzhiyun typedef unsigned long pte_t; 51*4882a593Smuzhiyun typedef unsigned long pmd_t; 52*4882a593Smuzhiyun typedef unsigned long pgd_t; 53*4882a593Smuzhiyun typedef unsigned long pgprot_t; 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun #define pte_val(x) (x) 56*4882a593Smuzhiyun #define pmd_val(x) (x) 57*4882a593Smuzhiyun #define pgd_val(x) (x) 58*4882a593Smuzhiyun #define pgprot_val(x) (x) 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun #define __pte(x) (x) 61*4882a593Smuzhiyun #define __pgd(x) (x) 62*4882a593Smuzhiyun #define __pgprot(x) (x) 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun #endif /* STRICT_MM_TYPECHECKS */ 65*4882a593Smuzhiyun 66*4882a593Smuzhiyun typedef struct page *pgtable_t; 67*4882a593Smuzhiyun 68*4882a593Smuzhiyun #ifdef USE_48_BIT_KSEG 69*4882a593Smuzhiyun #define PAGE_OFFSET 0xffff800000000000UL 70*4882a593Smuzhiyun #else 71*4882a593Smuzhiyun #define PAGE_OFFSET 0xfffffc0000000000UL 72*4882a593Smuzhiyun #endif 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun #else 75*4882a593Smuzhiyun 76*4882a593Smuzhiyun #ifdef USE_48_BIT_KSEG 77*4882a593Smuzhiyun #define PAGE_OFFSET 0xffff800000000000 78*4882a593Smuzhiyun #else 79*4882a593Smuzhiyun #define PAGE_OFFSET 0xfffffc0000000000 80*4882a593Smuzhiyun #endif 81*4882a593Smuzhiyun 82*4882a593Smuzhiyun #endif /* !__ASSEMBLY__ */ 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun #define __pa(x) ((unsigned long) (x) - PAGE_OFFSET) 85*4882a593Smuzhiyun #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) 86*4882a593Smuzhiyun #ifndef CONFIG_DISCONTIGMEM 87*4882a593Smuzhiyun #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) 88*4882a593Smuzhiyun 89*4882a593Smuzhiyun #define pfn_valid(pfn) ((pfn) < max_mapnr) 90*4882a593Smuzhiyun #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) 91*4882a593Smuzhiyun #endif /* CONFIG_DISCONTIGMEM */ 92*4882a593Smuzhiyun 93*4882a593Smuzhiyun #include <asm-generic/memory_model.h> 94*4882a593Smuzhiyun #include <asm-generic/getorder.h> 95*4882a593Smuzhiyun 96*4882a593Smuzhiyun #endif /* _ALPHA_PAGE_H */ 97