PCITWEAK(1)PCITWEAK(1)NAMEpcitweak - read/write PCI config space
SYNOPSISpcitweak-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
platfoms 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 loca-
tion (bus:device:function), chip vendor/device,
card (subsystem) vendor/card, revision, class and
header type. All values printed are in hexadeci-
mal.
-r PCI-ID
Read the PCI configuration space register at off-
set for the PCI device at bus location PCI-ID.
PCI-ID should be given in the form
bus:device:function, with each value in hexadeci-
mal. By default, a 32-bit register is read.
-w PCI-ID
Write value to the PCI configuration space regis-
ter 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 hexadeci-
mal. 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 ALSOscanpci(1)AUTHORS
David Dawes (dawes@xfree86.org).
XFree86 Version 4.0.2 1