1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 #ifndef _ASMPPC64_PAGE_H_ 3 #define _ASMPPC64_PAGE_H_ 4 /* 5 * Adapted from 6 * lib/arm64/asm/page.h and Linux kernel defines. 7 * 8 * Copyright (C) 2017, Red Hat Inc, Andrew Jones <drjones@redhat.com> 9 */ 10 11 #include <config.h> 12 #include <linux/const.h> 13 #include <libcflat.h> 14 15 #define VA_BITS 52 16 17 #define PAGE_SIZE CONFIG_PAGE_SIZE 18 #if PAGE_SIZE == SZ_64K 19 #define PAGE_SHIFT 16 20 #elif PAGE_SIZE == SZ_4K 21 #define PAGE_SHIFT 12 22 #else 23 #error Unsupported PAGE_SIZE 24 #endif 25 #define PAGE_MASK (~(PAGE_SIZE-1)) 26 27 #ifndef __ASSEMBLER__ 28 29 #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE) 30 31 typedef u64 pteval_t; 32 typedef u64 pmdval_t; 33 typedef u64 pudval_t; 34 typedef u64 pgdval_t; 35 typedef struct { pteval_t pte; } pte_t; 36 typedef struct { pmdval_t pmd; } pmd_t; 37 typedef struct { pudval_t pud; } pud_t; 38 typedef struct { pgdval_t pgd; } pgd_t; 39 typedef struct { pteval_t pgprot; } pgprot_t; 40 41 #define pte_val(x) ((x).pte) 42 #define pmd_val(x) ((x).pmd) 43 #define pud_val(x) ((x).pud) 44 #define pgd_val(x) ((x).pgd) 45 #define pgprot_val(x) ((x).pgprot) 46 47 #define __pte(x) ((pte_t) { (x) } ) 48 #define __pmd(x) ((pmd_t) { (x) } ) 49 #define __pud(x) ((pud_t) { (x) } ) 50 #define __pgd(x) ((pgd_t) { (x) } ) 51 #define __pgprot(x) ((pgprot_t) { (x) } ) 52 53 #define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x))) 54 #define __pa(x) __virt_to_phys((unsigned long)(x)) 55 56 #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) 57 #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) 58 59 extern phys_addr_t __virt_to_phys(unsigned long addr); 60 extern unsigned long __phys_to_virt(phys_addr_t addr); 61 62 extern void *__ioremap(phys_addr_t phys_addr, size_t size); 63 64 #endif /* !__ASSEMBLER__ */ 65 #endif /* _ASMPPC64_PAGE_H_ */ 66