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-nopud.h 7 * include/asm-generic/pgtable-nopmd.h 8 * 9 * Copyright (C) 2017, Red Hat Inc, Andrew Jones <drjones@redhat.com> 10 * 11 * This work is licensed under the terms of the GNU GPL, version 2. 12 */ 13 14 #include <linux/const.h> 15 16 #define PGTABLE_LEVELS 2 17 #define VA_BITS 42 18 19 #define PAGE_SHIFT 16 20 #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) 21 #define PAGE_MASK (~(PAGE_SIZE-1)) 22 23 #ifndef __ASSEMBLY__ 24 25 #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE) 26 27 #include <alloc.h> 28 29 typedef u64 pteval_t; 30 typedef u64 pmdval_t; 31 typedef u64 pudval_t; 32 typedef u64 pgdval_t; 33 typedef struct { pteval_t pte; } pte_t; 34 typedef struct { pgdval_t pgd; } pgd_t; 35 typedef struct { pteval_t pgprot; } pgprot_t; 36 37 #define pte_val(x) ((x).pte) 38 #define pgd_val(x) ((x).pgd) 39 #define pgprot_val(x) ((x).pgprot) 40 41 #define __pte(x) ((pte_t) { (x) } ) 42 #define __pgd(x) ((pgd_t) { (x) } ) 43 #define __pgprot(x) ((pgprot_t) { (x) } ) 44 45 typedef struct { pgd_t pgd; } pud_t; 46 #define pud_val(x) (pgd_val((x).pgd)) 47 #define __pud(x) ((pud_t) { __pgd(x) } ) 48 49 typedef struct { pud_t pud; } pmd_t; 50 #define pmd_val(x) (pud_val((x).pud)) 51 #define __pmd(x) ((pmd_t) { __pud(x) } ) 52 53 #ifndef __virt_to_phys 54 #define __phys_to_virt(x) ((unsigned long) (x)) 55 #define __virt_to_phys(x) (x) 56 #endif 57 58 #define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x))) 59 #define __pa(x) __virt_to_phys((unsigned long)(x)) 60 61 #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) 62 #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) 63 64 #endif /* !__ASSEMBLY__ */ 65 #endif /* _ASMARM64_PAGE_H_ */ 66