PCI_GET_DOMAIN_BUS_A(9) Hardware Interfaces PCI_GET_DOMAIN_BUS_A(9)NAMEpci_get_domain_bus_and_slot - locate PCI device for a given PCI domain
(segment), bus, and slot
SYNOPSIS
struct pci_dev * pci_get_domain_bus_and_slot(int domain,
unsigned int bus,
unsigned int devfn);
ARGUMENTS
domain
PCI domain/segment on which the PCI device resides.
bus
PCI bus on which desired PCI device resides
devfn
encodes number of PCI slot in which the desired PCI device resides
and the logical device number within that slot in case of
multi-function devices.
DESCRIPTION
Given a PCI domain, bus, and slot/function number, the desired PCI
device is located in the list of PCI devices. If the device is found,
its reference count is increased and this function returns a pointer to
its data structure. The caller must decrement the reference count by
calling pci_dev_put. If no device is found, NULL is returned.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 PCI_GET_DOMAIN_BUS_A(9)