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PCI_FIND_CAPABILITY(9) Hardware Interfaces PCI_FIND_CAPABILITY(9)

NAME

pci_find_capability - query for devices' capabilities

SYNOPSIS

int pci_find_capability(struct pci_dev * dev, int cap);

ARGUMENTS

dev
PCI device to query

cap

capability code

DESCRIPTION

Tell if a device supports a given PCI capability. Returns the address of the requested capability structure within the device's PCI configuration space or 0 in case the device does not support it. Possible values for cap:

PCI_CAP_ID_PM Power Management PCI_CAP_ID_AGP Accelerated Graphics Port PCI_CAP_ID_VPD Vital Product Data PCI_CAP_ID_SLOTID Slot Identification PCI_CAP_ID_MSI Message Signalled Interrupts PCI_CAP_ID_CHSWP CompactPCI HotSwap PCI_CAP_ID_PCIX PCI-X PCI_CAP_ID_EXP PCI Express

COPYRIGHT

April 2019 Kernel Hackers Manual 4.9.