pci_find_capability(9) [centos man page]

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

Kernel Hackers Manual 3.10					     June 2014						    PCI_FIND_CAPABILITY(9)

PCITWEAK(1)						      General Commands Manual						       PCITWEAK(1)

NAME

       pcitweak - read/write PCI config space

SYNOPSIS

       pcitweak -l
       pcitweak -r PCI-ID [-b|-h] offset
       pcitweak -w PCI-ID [-b|-h] offset value

DESCRIPTION

       Pcitweak  is a utility that can be used to examine or change registers in the PCI configuration space.  On most platforms pcitweak can only
       be run by the root user.

OPTIONS

       -l      Probe the PCI buses and print a line for each detected device.  Each line contains the  bus  location  (bus:device:function),  chip
	       vendor/device, card (subsystem) vendor/card, revision, class and header type.  All values printed are in hexadecimal.

       -r PCI-ID
	       Read  the PCI configuration space register at offset for the PCI device at bus location PCI-ID.	PCI-ID should be given in the form
	       bus:device:function, with each value in hexadecimal.  By default, a 32-bit register is read.

       -w PCI-ID
	       Write value to the PCI configuration space register at offset for the PCI device at bus location PCI-ID.  PCI-ID should be given in
	       the form bus:device:function, with each value in hexadecimal.  By default, a 32-bit register is written.

       -b      Read or write an 8-bit value (byte).

       -h      Read or write a 16-bit value (halfword).

SEE ALSO

       scanpci(1)

AUTHORS

       David Dawes (dawes@xfree86.org).

XFree86 							   Version 4.7.0						       PCITWEAK(1)