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PCI_FIND_EXT_CAPABIL(9) Hardware Interfaces PCI_FIND_EXT_CAPABIL(9)

NAME

pci_find_ext_capability - Find an extended capability

SYNOPSIS

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

ARGUMENTS

dev
PCI device to query

cap

capability code

DESCRIPTION

Returns the address of the requested extended capability structure within the device's PCI configuration space or 0 if the device does not support it. Possible values for cap:

PCI_EXT_CAP_ID_ERR Advanced Error Reporting PCI_EXT_CAP_ID_VC Virtual Channel PCI_EXT_CAP_ID_DSN Device Serial Number PCI_EXT_CAP_ID_PWR Power Budgeting

COPYRIGHT

April 2019 Kernel Hackers Manual 4.9.