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/*
 * 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.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#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)

#define virt_to_pfn(kaddr)      (__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn)        __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 pfn_valid(pfn)          ((pfn) < max_mapnr)

#define virt_addr_valid(kaddr)	(pfn_valid(virt_to_pfn(kaddr)))

#endif /* __ASSEMBLY__ */


#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)


#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>

#endif /* __ASM_OPENRISC_PAGE_H */

Filemanager

Name Type Size Permission Actions
bitops Folder 0755
Kbuild File 997 B 0644
asm-offsets.h File 35 B 0644
atomic.h File 3.02 KB 0644
barrier.h File 203 B 0644
bitops.h File 1.5 KB 0644
cache.h File 888 B 0644
cacheflush.h File 3.37 KB 0644
cmpxchg.h File 3.92 KB 0644
cpuinfo.h File 970 B 0644
delay.h File 670 B 0644
dma-mapping.h File 968 B 0644
elf.h File 2.02 KB 0644
fixmap.h File 2.74 KB 0644
futex.h File 2.24 KB 0644
io.h File 1.31 KB 0644
irq.h File 835 B 0644
irqflags.h File 866 B 0644
linkage.h File 764 B 0644
mmu.h File 728 B 0644
mmu_context.h File 1.3 KB 0644
page.h File 2.54 KB 0644
pgalloc.h File 2.57 KB 0644
pgtable.h File 13.96 KB 0644
processor.h File 2.7 KB 0644
ptrace.h File 3.33 KB 0644
serial.h File 1.11 KB 0644
smp.h File 822 B 0644
spinlock.h File 985 B 0644
spinlock_types.h File 188 B 0644
spr.h File 1.17 KB 0644
spr_defs.h File 22.91 KB 0644
string.h File 324 B 0644
syscall.h File 1.91 KB 0644
syscalls.h File 1.04 KB 0644
thread_info.h File 3.85 KB 0644
time.h File 627 B 0644
timex.h File 914 B 0644
tlb.h File 1.01 KB 0644
tlbflush.h File 2.05 KB 0644
uaccess.h File 7.98 KB 0644
unaligned.h File 1.7 KB 0644
unwinder.h File 557 B 0644