'\" t
.\"     Title: pci_find_capability
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Hardware Interfaces
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "PCI_FIND_CAPABILITY" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Hardware Interfaces"
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.SH "NAME"
pci_find_capability \- query for devices\*(Aq capabilities
.SH "SYNOPSIS"
.HP \w'int\ pci_find_capability('u
.BI "int pci_find_capability(struct\ pci_dev\ *\ " "dev" ", int\ " "cap" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
PCI device to query
.RE
.PP
\fIcap\fR
.RS 4
capability code
.RE
.SH "DESCRIPTION"
.PP
Tell if a device supports a given PCI capability\&. Returns the address of the requested capability structure within the device\*(Aqs PCI configuration space or 0 in case the device does not support it\&. Possible values for
\fIcap\fR:
.PP
\fBPCI_CAP_ID_PM\fR
Power Management
\fBPCI_CAP_ID_AGP\fR
Accelerated Graphics Port
\fBPCI_CAP_ID_VPD\fR
Vital Product Data
\fBPCI_CAP_ID_SLOTID\fR
Slot Identification
\fBPCI_CAP_ID_MSI\fR
Message Signalled Interrupts
\fBPCI_CAP_ID_CHSWP\fR
CompactPCI HotSwap
\fBPCI_CAP_ID_PCIX\fR
PCI\-X
\fBPCI_CAP_ID_EXP\fR
PCI Express
.SH "COPYRIGHT"
.br