[linux-2.6-block.git] / include / asm-generic / pci.h

/*
 * linux/include/asm-generic/pci.h
 *
 *  Copyright (C) 2003 Russell King
 */
#ifndef _ASM_GENERIC_PCI_H
#define _ASM_GENERIC_PCI_H

/**
 * pcibios_resource_to_bus - convert resource to PCI bus address
 * @dev: device which owns this resource
 * @region: converted bus-centric region (start,end)
 * @res: resource to convert
 *
 * Convert a resource to a PCI device bus address or bus window.
 */
static inline void
pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
			 struct resource *res)
{
	region->start = res->start;
	region->end = res->end;
}

static inline void
pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
			struct pci_bus_region *region)
{
	res->start = region->start;
	res->end = region->end;
}

static inline struct resource *
pcibios_select_root(struct pci_dev *pdev, struct resource *res)
{
	struct resource *root = NULL;

	if (res->flags & IORESOURCE_IO)
		root = &ioport_resource;
	if (res->flags & IORESOURCE_MEM)
		root = &iomem_resource;

	return root;
}

#ifndef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
	return channel ? 15 : 14;
}
#endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */

/*
 * By default, assume that no iommu is in use and that the PCI
 * space is mapped to address physical 0.
 */
#ifndef PCI_DMA_BUS_IS_PHYS
#define PCI_DMA_BUS_IS_PHYS	(1)
#endif

#endif /* _ASM_GENERIC_PCI_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/asm-generic/pci.h
	3	*
	4	* Copyright (C) 2003 Russell King
	5	*/
	6	#ifndef _ASM_GENERIC_PCI_H
	7	#define _ASM_GENERIC_PCI_H
	8
	9	/**
	10	* pcibios_resource_to_bus - convert resource to PCI bus address
	11	* @dev: device which owns this resource
	12	* @region: converted bus-centric region (start,end)
	13	* @res: resource to convert
	14	*
	15	* Convert a resource to a PCI device bus address or bus window.
	16	*/
	17	static inline void
	18	pcibios_resource_to_bus(struct pci_dev dev, struct pci_bus_region region,
	19	struct resource *res)
	20	{
	21	region->start = res->start;
	22	region->end = res->end;
	23	}
	24
43c34735 DB	25	static inline void
	26	pcibios_bus_to_resource(struct pci_dev dev, struct resource res,
	27	struct pci_bus_region *region)
	28	{
	29	res->start = region->start;
	30	res->end = region->end;
	31	}
	32
a7db5040 AC	33	static inline struct resource *
	34	pcibios_select_root(struct pci_dev pdev, struct resource res)
	35	{
	36	struct resource *root = NULL;
	37
	38	if (res->flags & IORESOURCE_IO)
	39	root = &ioport_resource;
	40	if (res->flags & IORESOURCE_MEM)
	41	root = &iomem_resource;
	42
	43	return root;
	44	}
1da177e4 LT	45
	46	#ifndef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
	47	static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
	48	{
	49	return channel ? 15 : 14;
	50	}
	51	#endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */
	52
d7c4f1b7 AB	53	/*
	54	* By default, assume that no iommu is in use and that the PCI
	55	* space is mapped to address physical 0.
	56	*/
	57	#ifndef PCI_DMA_BUS_IS_PHYS
	58	#define PCI_DMA_BUS_IS_PHYS (1)
1da177e4	59	#endif
d7c4f1b7 AB	60
d7c4f1b7 AB	61	#endif /* _ASM_GENERIC_PCI_H */