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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 slotSYNOPSIS¶
struct pci_dev * pci_get_domain_bus_and_slot(int domain, unsigned int bus, unsigned int devfn);
ARGUMENTS¶
domainPCI 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.COPYRIGHT¶
| April 2019 | Kernel Hackers Manual 4.9. |