1 #ifndef _ASMARM64_PAGE_H_ 2 #define _ASMARM64_PAGE_H_ 3 /* 4 * Adapted from 5 * arch/arm64/include/asm/pgtable-types.h 6 * include/asm-generic/pgtable-nopmd.h 7 * 8 * Copyright (C) 2017, Red Hat Inc, Andrew Jones <drjones@redhat.com> 9 * 10 * This work is licensed under the terms of the GNU GPL, version 2. 11 */ 12 13 #include <linux/const.h> 14 15 #define PGTABLE_LEVELS 2 16 #define VA_BITS 42 17 18 #define PAGE_SHIFT 16 19 #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) 20 #define PAGE_MASK (~(PAGE_SIZE-1)) 21 22 #ifndef __ASSEMBLY__ 23 24 #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE) 25 26 typedef u64 pteval_t; 27 typedef u64 pmdval_t; 28 typedef u64 pgdval_t; 29 typedef struct { pteval_t pte; } pte_t; 30 typedef struct { pgdval_t pgd; } pgd_t; 31 typedef struct { pteval_t pgprot; } pgprot_t; 32 33 #define pte_val(x) ((x).pte) 34 #define pgd_val(x) ((x).pgd) 35 #define pgprot_val(x) ((x).pgprot) 36 37 #define __pte(x) ((pte_t) { (x) } ) 38 #define __pgd(x) ((pgd_t) { (x) } ) 39 #define __pgprot(x) ((pgprot_t) { (x) } ) 40 41 typedef struct { pgd_t pgd; } pmd_t; 42 #define pmd_val(x) (pgd_val((x).pgd)) 43 #define __pmd(x) ((pmd_t) { __pgd(x) } ) 44 45 #define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x))) 46 #define __pa(x) __virt_to_phys((unsigned long)(x)) 47 48 #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) 49 #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) 50 51 extern phys_addr_t __virt_to_phys(unsigned long addr); 52 extern unsigned long __phys_to_virt(phys_addr_t addr); 53 54 #endif /* !__ASSEMBLY__ */ 55 #endif /* _ASMARM64_PAGE_H_ */ 56