pci_get_bus_and_slot

Langue: en

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Version: June 2009 (debian - 07/07/09)

Section: 9 (Appels noyau Linux)

NAME

pci_get_bus_and_slot - locate PCI device from a given PCI bus & slot

SYNOPSIS

struct pci_dev * pci_get_bus_and_slot(unsigned int bus, unsigned int devfn);

ARGUMENTS

bus

number of 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.

NOTE

the bus/slot search is limited to PCI domain (segment) 0.

Given a PCI bus and slot/function number, the desired PCI device is located in system global list of PCI devices. If the device is found, a pointer to its data structure is returned. If no device is found, NULL is returned. The returned device has its reference count bumped by one.