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Kbuild	177 B	0644	Edit Rename Delete
asm-macros.h	6.23 KB	0644	Edit Rename Delete
asm-offsets.h	209 B	0644	Edit Rename Delete
cache.h	679 B	0644	Edit Rename Delete
cacheflush.h	1.89 KB	0644	Edit Rename Delete
checksum.h	1.73 KB	0644	Edit Rename Delete
cpuinfo.h	851 B	0644	Edit Rename Delete
delay.h	547 B	0644	Edit Rename Delete
elf.h	2.61 KB	0644	Edit Rename Delete
entry.h	2.6 KB	0644	Edit Rename Delete
io.h	1.29 KB	0644	Edit Rename Delete
irq.h	274 B	0644	Edit Rename Delete
irqflags.h	1.17 KB	0644	Edit Rename Delete
kgdb.h	1.29 KB	0644	Edit Rename Delete
linkage.h	318 B	0644	Edit Rename Delete
mmu.h	445 B	0644	Edit Rename Delete
mmu_context.h	1.48 KB	0644	Edit Rename Delete
page.h	2.82 KB	0644	Edit Rename Delete
pgalloc.h	1.01 KB	0644	Edit Rename Delete
pgtable-bits.h	1.05 KB	0644	Edit Rename Delete
pgtable.h	7.08 KB	0644	Edit Rename Delete
processor.h	2.02 KB	0644	Edit Rename Delete
ptrace.h	2.29 KB	0644	Edit Rename Delete
registers.h	1.56 KB	0644	Edit Rename Delete
setup.h	458 B	0644	Edit Rename Delete
shmparam.h	252 B	0644	Edit Rename Delete
string.h	618 B	0644	Edit Rename Delete
switch_to.h	866 B	0644	Edit Rename Delete
syscall.h	1.57 KB	0644	Edit Rename Delete
syscalls.h	328 B	0644	Edit Rename Delete
thread_info.h	3.38 KB	0644	Edit Rename Delete
timex.h	367 B	0644	Edit Rename Delete
tlb.h	664 B	0644	Edit Rename Delete
tlbflush.h	1.36 KB	0644	Edit Rename Delete
traps.h	514 B	0644	Edit Rename Delete
uaccess.h	5.15 KB	0644	Edit Rename Delete
vmalloc.h	93 B	0644	Edit Rename Delete

Edit File:page.h

/*
 * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
 * Copyright (C) 2004 Microtronix Datacom Ltd.
 *
 * MMU support based on asm/page.h from mips which is:
 *
 * Copyright (C) 1994 - 1999, 2000, 03 Ralf Baechle
 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */

#ifndef _ASM_NIOS2_PAGE_H
#define _ASM_NIOS2_PAGE_H

#include <linux/pfn.h>
#include <linux/const.h>

/*
 * PAGE_SHIFT determines the page size
 */
#define PAGE_SHIFT	12
#define PAGE_SIZE	(_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK	(~(PAGE_SIZE - 1))

/*
 * PAGE_OFFSET -- the first address of the first page of memory.
 */
#define PAGE_OFFSET	\
	(CONFIG_NIOS2_MEM_BASE + CONFIG_NIOS2_KERNEL_REGION_BASE)

#ifndef __ASSEMBLY__

/*
 * This gives the physical RAM offset.
 */
#define PHYS_OFFSET		CONFIG_NIOS2_MEM_BASE

/*
 * It's normally defined only for FLATMEM config but it's
 * used in our early mem init code for all memory models.
 * So always define it.
 */
#define ARCH_PFN_OFFSET		PFN_UP(PHYS_OFFSET)

#define clear_page(page)	memset((page), 0, PAGE_SIZE)
#define copy_page(to, from)	memcpy((to), (from), PAGE_SIZE)

struct page;

extern void clear_user_page(void *addr, unsigned long vaddr, struct page *page);
extern void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
				struct page *to);

/*
 * These are used to make use of C type-checking.
 */
typedef struct page *pgtable_t;
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pgd; } pgd_t;
typedef struct { unsigned long pgprot; } pgprot_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) })

extern unsigned long memory_start;
extern unsigned long memory_end;
extern unsigned long memory_size;

extern struct page *mem_map;

# define __pa(x)		\
	((unsigned long)(x) - PAGE_OFFSET + PHYS_OFFSET)
# define __va(x)		\
	((void *)((unsigned long)(x) + PAGE_OFFSET - PHYS_OFFSET))

#define page_to_virt(page)	\
	((void *)(((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)

# define pfn_to_kaddr(pfn)	__va((pfn) << PAGE_SHIFT)

static inline bool pfn_valid(unsigned long pfn)
{
	/* avoid <linux/mm.h> include hell */
	extern unsigned long max_mapnr;
	unsigned long pfn_offset = ARCH_PFN_OFFSET;

return pfn >= pfn_offset && pfn < max_mapnr;
}

# define virt_to_page(vaddr)	pfn_to_page(PFN_DOWN(virt_to_phys(vaddr)))
# define virt_addr_valid(vaddr)	pfn_valid(PFN_DOWN(virt_to_phys(vaddr)))

# define VM_DATA_DEFAULT_FLAGS	VM_DATA_FLAGS_NON_EXEC

#include <asm-generic/memory_model.h>

#include <asm-generic/getorder.h>

#endif /* !__ASSEMBLY__ */

#endif /* _ASM_NIOS2_PAGE_H */

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current directory: / / usr / src / linux-headers-5.15.0-140 / arch / nios2 / include / asm

Edit File:page.h