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/*
 * Copyright (C) 2014 Altera Corporation
 * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
 * Copyright (C) 2004 Microtronix Datacom Ltd.
 *
 * 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_IO_H
#define _ASM_NIOS2_IO_H

#include <linux/types.h>
#include <asm/pgtable-bits.h>

/* PCI is not supported in nios2, set this to 0. */
#define IO_SPACE_LIMIT 0

#define readb_relaxed(addr)	readb(addr)
#define readw_relaxed(addr)	readw(addr)
#define readl_relaxed(addr)	readl(addr)

#define writeb_relaxed(x, addr)	writeb(x, addr)
#define writew_relaxed(x, addr)	writew(x, addr)
#define writel_relaxed(x, addr)	writel(x, addr)

extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
			unsigned long cacheflag);
extern void __iounmap(void __iomem *addr);

static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
{
	return __ioremap(physaddr, size, 0);
}

static inline void __iomem *ioremap_nocache(unsigned long physaddr,
						unsigned long size)
{
	return __ioremap(physaddr, size, 0);
}

static inline void iounmap(void __iomem *addr)
{
	__iounmap(addr);
}

#define ioremap_wc ioremap_nocache
#define ioremap_wt ioremap_nocache

/* Pages to physical address... */
#define page_to_phys(page)	virt_to_phys(page_to_virt(page))

/* Macros used for converting between virtual and physical mappings. */
#define phys_to_virt(vaddr)	\
	((void *)((unsigned long)(vaddr) | CONFIG_NIOS2_KERNEL_REGION_BASE))
/* Clear top 3 bits */
#define virt_to_phys(vaddr)	\
	((unsigned long)((unsigned long)(vaddr) & ~0xE0000000))

#include <asm-generic/io.h>

#endif /* _ASM_NIOS2_IO_H */

Filemanager

Name Type Size Permission Actions
Kbuild File 958 B 0644
asm-macros.h File 6.71 KB 0644
asm-offsets.h File 813 B 0644
cache.h File 1.14 KB 0644
cacheflush.h File 1.91 KB 0644
checksum.h File 2.03 KB 0644
cpuinfo.h File 1.42 KB 0644
delay.h File 547 B 0644
dma-mapping.h File 547 B 0644
elf.h File 3.2 KB 0644
entry.h File 2.6 KB 0644
io.h File 1.72 KB 0644
irq.h File 907 B 0644
irqflags.h File 1.75 KB 0644
kgdb.h File 1.88 KB 0644
linkage.h File 809 B 0644
mmu.h File 445 B 0644
mmu_context.h File 1.69 KB 0644
page.h File 3.08 KB 0644
pgalloc.h File 1.86 KB 0644
pgtable-bits.h File 1.05 KB 0644
pgtable.h File 7.99 KB 0644
processor.h File 2.18 KB 0644
ptrace.h File 2.29 KB 0644
registers.h File 2.15 KB 0644
setup.h File 1.04 KB 0644
shmparam.h File 804 B 0644
string.h File 618 B 0644
switch_to.h File 866 B 0644
syscall.h File 2.6 KB 0644
syscalls.h File 883 B 0644
thread_info.h File 3.37 KB 0644
timex.h File 912 B 0644
tlb.h File 963 B 0644
tlbflush.h File 1.56 KB 0644
traps.h File 514 B 0644
uaccess.h File 5.18 KB 0644