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/*
* include/asm-xtensa/io.h
*
* 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.
*
* Copyright (C) 2001 - 2005 Tensilica Inc.
*/
#ifndef _XTENSA_IO_H
#define _XTENSA_IO_H
#include <asm/byteorder.h>
#include <asm/page.h>
#include <asm/vectors.h>
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/pgtable.h>
#include <linux/types.h>
#define IOADDR(x) (XCHAL_KIO_BYPASS_VADDR + (x))
#define IO_SPACE_LIMIT ~0
#define PCI_IOBASE ((void __iomem *)XCHAL_KIO_BYPASS_VADDR)
#ifdef CONFIG_MMU
/*
* I/O memory mapping functions.
*/
void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size,
pgprot_t prot);
#define ioremap_prot ioremap_prot
#define iounmap iounmap
static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
{
if (offset >= XCHAL_KIO_PADDR
&& offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
else
return ioremap_prot(offset, size,
pgprot_noncached(PAGE_KERNEL));
}
#define ioremap ioremap
static inline void __iomem *ioremap_cache(unsigned long offset,
unsigned long size)
{
if (offset >= XCHAL_KIO_PADDR
&& offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
else
return ioremap_prot(offset, size, PAGE_KERNEL);
}
#define ioremap_cache ioremap_cache
#endif /* CONFIG_MMU */
#include <asm-generic/io.h>
#endif /* _XTENSA_IO_H */
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