| Server IP : 74.208.127.88 / Your IP : 216.73.216.126 Web Server : Apache/2.4.41 (Ubuntu) System : Linux ubuntu 5.4.0-163-generic #180-Ubuntu SMP Tue Sep 5 13:21:23 UTC 2023 x86_64 User : www-data ( 33) PHP Version : 7.4.3-4ubuntu2.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /proc/self/root/lib/modules/5.4.0-163-generic/build/arch/nds32/include/asm/ |
Upload File : |
/* SPDX-License-Identifier: GPL-2.0 */ // Copyright (C) 2005-2017 Andes Technology Corporation #ifndef __ASM_NDS32_MEMORY_H #define __ASM_NDS32_MEMORY_H #include <linux/compiler.h> #include <linux/sizes.h> #ifndef __ASSEMBLY__ #include <asm/page.h> #endif #ifndef PHYS_OFFSET #define PHYS_OFFSET (0x0) #endif /* * TASK_SIZE - the maximum size of a user space task. * TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area */ #define TASK_SIZE ((CONFIG_PAGE_OFFSET) - (SZ_32M)) #define TASK_UNMAPPED_BASE ALIGN(TASK_SIZE / 3, SZ_32M) #define PAGE_OFFSET (CONFIG_PAGE_OFFSET) /* * Physical vs virtual RAM address space conversion. These are * private definitions which should NOT be used outside memory.h * files. Use virt_to_phys/phys_to_virt/__pa/__va instead. */ #ifndef __virt_to_phys #define __virt_to_phys(x) ((x) - PAGE_OFFSET + PHYS_OFFSET) #define __phys_to_virt(x) ((x) - PHYS_OFFSET + PAGE_OFFSET) #endif /* * The module space lives between the addresses given by TASK_SIZE * and PAGE_OFFSET - it must be within 32MB of the kernel text. */ #define MODULES_END (PAGE_OFFSET) #define MODULES_VADDR (MODULES_END - SZ_32M) #if TASK_SIZE > MODULES_VADDR #error Top of user space clashes with start of module space #endif #ifndef __ASSEMBLY__ /* * PFNs are used to describe any physical page; this means * PFN 0 == physical address 0. * * This is the PFN of the first RAM page in the kernel * direct-mapped view. We assume this is the first page * of RAM in the mem_map as well. */ #define PHYS_PFN_OFFSET (PHYS_OFFSET >> PAGE_SHIFT) /* * Drivers should NOT use these either. */ #define __pa(x) __virt_to_phys((unsigned long)(x)) #define __va(x) ((void *)__phys_to_virt((unsigned long)(x))) /* * Conversion between a struct page and a physical address. * * Note: when converting an unknown physical address to a * struct page, the resulting pointer must be validated * using VALID_PAGE(). It must return an invalid struct page * for any physical address not corresponding to a system * RAM address. * * pfn_valid(pfn) indicates whether a PFN number is valid * * virt_to_page(k) convert a _valid_ virtual address to struct page * * virt_addr_valid(k) indicates whether a virtual address is valid */ #ifndef CONFIG_DISCONTIGMEM #define ARCH_PFN_OFFSET PHYS_PFN_OFFSET #define pfn_valid(pfn) ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr)) #define virt_to_page(kaddr) (pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)) #define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) #else /* CONFIG_DISCONTIGMEM */ #error CONFIG_DISCONTIGMEM is not supported yet. #endif /* !CONFIG_DISCONTIGMEM */ #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) #endif #include <asm-generic/memory_model.h> #endif