/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * OpenRISC Linux * * Linux architectural port borrowing liberally from similar works of * others. All original copyrights apply as per the original source * declaration. * * OpenRISC implementation: * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> * et al. */ #ifndef __ASM_OPENRISC_PAGE_H #define __ASM_OPENRISC_PAGE_H /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT 13 #ifdef __ASSEMBLY__ #define PAGE_SIZE (1 << PAGE_SHIFT) #else #define PAGE_SIZE (1UL << PAGE_SHIFT) #endif #define PAGE_MASK (~(PAGE_SIZE-1)) #define PAGE_OFFSET 0xc0000000 #define KERNELBASE PAGE_OFFSET /* This is not necessarily the right place for this, but it's needed by * drivers/of/fdt.c */ #include <asm/setup.h> #ifndef __ASSEMBLY__ #define clear_page(page) memset((page), 0, PAGE_SIZE) #define copy_page(to, from) memcpy((to), (from), PAGE_SIZE) #define clear_user_page(page, vaddr, pg) clear_page(page) #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) /* * These are used to make use of C type-checking.. */ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long pgd; } pgd_t; typedef struct { unsigned long pgprot; } pgprot_t; typedef struct page *pgtable_t; #define pte_val(x) ((x).pte) #define pgd_val(x) ((x).pgd) #define pgprot_val(x) ((x).pgprot) #define __pte(x) ((pte_t) { (x) }) #define __pgd(x) ((pgd_t) { (x) }) #define __pgprot(x) ((pgprot_t) { (x) }) #endif /* !__ASSEMBLY__ */ #ifndef __ASSEMBLY__ #define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET)) #define __pa(x) ((unsigned long) (x) - PAGE_OFFSET) static inline unsigned long virt_to_pfn(const void *kaddr) { return __pa(kaddr) >> PAGE_SHIFT; } static inline void * pfn_to_virt(unsigned long pfn) { return (void *)((unsigned long)__va(pfn) << PAGE_SHIFT); } #define virt_to_page(addr) \ (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) #define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT) #define virt_addr_valid(kaddr) (pfn_valid(virt_to_pfn(kaddr))) #endif /* __ASSEMBLY__ */ #include <asm-generic/memory_model.h> #include <asm-generic/getorder.h> #endif /* __ASM_OPENRISC_PAGE_H */