62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
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/*
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* linux/include/asm-generic/pci.h
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*
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* Copyright (C) 2003 Russell King
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*/
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#ifndef _ASM_GENERIC_PCI_H
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#define _ASM_GENERIC_PCI_H
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/**
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* pcibios_resource_to_bus - convert resource to PCI bus address
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* @dev: device which owns this resource
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* @region: converted bus-centric region (start,end)
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* @res: resource to convert
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*
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* Convert a resource to a PCI device bus address or bus window.
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*/
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static inline void
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pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
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struct resource *res)
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{
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region->start = res->start;
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region->end = res->end;
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}
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static inline void
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pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
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struct pci_bus_region *region)
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{
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res->start = region->start;
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res->end = region->end;
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}
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static inline struct resource *
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pcibios_select_root(struct pci_dev *pdev, struct resource *res)
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{
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struct resource *root = NULL;
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if (res->flags & IORESOURCE_IO)
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root = &ioport_resource;
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if (res->flags & IORESOURCE_MEM)
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root = &iomem_resource;
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return root;
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}
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#ifndef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
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static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
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{
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return channel ? 15 : 14;
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}
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#endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */
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/*
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* By default, assume that no iommu is in use and that the PCI
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* space is mapped to address physical 0.
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*/
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#ifndef PCI_DMA_BUS_IS_PHYS
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#define PCI_DMA_BUS_IS_PHYS (1)
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#endif
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#endif /* _ASM_GENERIC_PCI_H */
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