mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 05:32:00 +00:00
d7c4f1b78a
Some generic code is using the horribly misnamed PCI_DMA_BUS_IS_PHYS from asm/pci.h. This makes sure that an architecture without PCI support does not have to define this itself but can rely on the asm-generic version. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
/*
|
|
* 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;
|
|
}
|
|
|
|
#define pcibios_scan_all_fns(a, b) 0
|
|
|
|
#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 */
|