| 1 | |
| 2 | * include/asm-xtensa/io.h
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| 3 | *
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| 4 | * This file is subject to the terms and conditions of the GNU General Public
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| 5 | * License. See the file "COPYING" in the main directory of this archive
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| 6 | * for more details.
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| 7 | *
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| 8 | * Copyright (C) 2001 - 2005 Tensilica Inc.
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| 9 |
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| 10 |
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| 11 | #ifndef _XTENSA_IO_H
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| 12 | #define _XTENSA_IO_H
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| 13 |
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| 14 | #include <asm/byteorder.h>
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| 15 | #include <asm/page.h>
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| 16 | #include <asm/vectors.h>
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| 17 | #include <linux/bug.h>
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| 18 | #include <linux/kernel.h>
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| 19 | #include <linux/pgtable.h>
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| 20 |
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| 21 | #include <linux/types.h>
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| 22 |
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| 23 | #define IOADDR(x) (XCHAL_KIO_BYPASS_VADDR + (x))
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| 24 | #define IO_SPACE_LIMIT ~0
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| 25 | #define PCI_IOBASE ((void __iomem *)XCHAL_KIO_BYPASS_VADDR)
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| 26 |
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| 27 | #ifdef CONFIG_MMU
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| 28 | |
| 29 | * I/O memory mapping functions.
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| 30 |
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| 31 | void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size,
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| 32 | pgprot_t prot);
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| 33 | #define ioremap_prot ioremap_prot
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| 34 | #define iounmap iounmap
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| 35 |
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| 36 | static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
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| 37 | {
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| 38 | if (offset >= XCHAL_KIO_PADDR
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| 39 | && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
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| 40 | return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
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| 41 | else
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| 42 | return ioremap_prot(offset, size,
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| 43 | pgprot_noncached(PAGE_KERNEL));
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| 44 | }
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| 45 | #define ioremap ioremap
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| 46 |
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| 47 | static inline void __iomem *ioremap_cache(unsigned long offset,
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| 48 | unsigned long size)
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| 49 | {
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| 50 | if (offset >= XCHAL_KIO_PADDR
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| 51 | && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
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| 52 | return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
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| 53 | else
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| 54 | return ioremap_prot(offset, size, PAGE_KERNEL);
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| 55 |
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| 56 | }
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| 57 | #define ioremap_cache ioremap_cache
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| 58 | #endif
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| 59 |
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| 60 | #include <asm-generic/io.h>
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| 61 |
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| 62 | #endif
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