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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/xtensa/include/asm/pci.h
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/*

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 * linux/include/asm-xtensa/pci.h

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 *

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 * This file is subject to the terms and conditions of the GNU General Public

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 * License.  See the file "COPYING" in the main directory of this archive

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 * for more details.

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 *

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 * Copyright (C) 2001 - 2005 Tensilica Inc.

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 */

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#ifndef _XTENSA_PCI_H

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#define _XTENSA_PCI_H

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/* Can be used to override the logic in pci_scan_bus for skipping

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 * already-configured bus numbers - to be used for buggy BIOSes

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 * or architectures with incomplete PCI setup by the loader

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 */

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#define pcibios_assign_all_busses()	0

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/* Assume some values. (We should revise them, if necessary) */

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#define PCIBIOS_MIN_IO		0x2000

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#define PCIBIOS_MIN_MEM		0x10000000

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/* Dynamic DMA mapping stuff.

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 * Xtensa has everything mapped statically like x86.

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 */

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#include <linux/types.h>

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#include <linux/slab.h>

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#include <linux/scatterlist.h>

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#include <linux/string.h>

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#include <asm/io.h>

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/* The PCI address space does equal the physical memory address space.

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 * The networking and block device layers use this boolean for bounce buffer

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 * decisions.

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 */

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/* Tell PCI code what kind of PCI resource mappings we support */

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#define HAVE_PCI_MMAP			1

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#define ARCH_GENERIC_PCI_MMAP_RESOURCE	1

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#define arch_can_pci_mmap_io()		1

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#endif	/* _XTENSA_PCI_H */

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