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| PCI_GET_DOMAIN_BUS_A(9) | Hardware Interfaces | PCI_GET_DOMAIN_BUS_A(9) |
NAME¶
pci_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¶
int domain
PCI domain/segment on which the PCI device resides.
unsigned int bus
PCI bus on which desired PCI device resides
unsigned int 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.
COPYRIGHT¶
| July 2017 | Kernel Hackers Manual 4.11 |