setpci - configure PCI devices
SYNOPSIS
setpci [options] devices operations...
DESCRIPTION
setpci is a utility for querying and configuring PCI
devices.
To make use of all the features of this program, you need
to have Linux kernel 2.1.82 or newer which supports the
/proc/bus/pci interface. With older kernels, the PCI util
ities have to use direct hardware access which is avail
able only to root and it suffers from numerous race condi
tions and other problems.
All numbers are entered in hexadecimal notation.
OPTIONS
-v Tells setpci to be verbose and display detailed
information about configuration space accesses.
-f Tells setpci not to complain when there's nothing
to do (when no devices are selected). This option
is intended for use in widely-distributed configu
ration scripts where it's uncertain whether the
device in question is present in the machine or
not.
-D `Demo mode' -- simulate configuration space
accesses instead of really doing them. It's useful
to try setpci -vD to see what your complex sequence
of setpci operations does before you actually exe
cute it.
--version
Shows setpci version. This option should be used
standalone.
DEVICE SELECTION
Before each sequence of operations you need to select
which devices you wish that operation to affect.
-s [[<bus>]:][<slot>][.[<func>]]
Select devices in specified bus, slot and function.
Each component of the device address can be omitted
or set as "*" meaning "any value". All numbers are
hexadecimal. E.g., "0:" means all devices on bus
0, "0" means all functions of device 0 on any bus,
busses and ".4" selects only fourth function of
each device.
-d [<vendor>]:[<device>]
Select devices with specified vendor and device ID.
Both ID's are given in hexadecimal and may be omit
ted or given as "*" meaning "any value".
OPERATIONS
To query value of a configuration register, just name it
(either by typing its name or by typing register address
with optional .B, .W or .L suffix specifying register
width as byte, word or longword).
To set a register, write reg=values where reg is the same
you would use to query the register and values is a comma-
separated list of values you want to write starting with
the given address.
REGISTER NAMES
setpci knows the following configuration register names.
See PCI bus specs for their precise meaning or consult
/usr/include/linux/pci.h for few comments.
VENDOR_ID
DEVICE_ID
COMMAND
STATUS
REVISION
CLASS_PROG
CLASS_DEVICE
CACHE_LINE_SIZE
LATENCY_TIMER
HEADER_TYPE
BIST
BASE_ADDRESS_0
BASE_ADDRESS_1
BASE_ADDRESS_2
BASE_ADDRESS_3
BASE_ADDRESS_4
BASE_ADDRESS_5
CARDBUS_CIS
SUBSYSTEM_VENDOR_ID
SUBSYSTEM_ID
ROM_ADDRESS
INTERRUPT_LINE
INTERRUPT_PIN
MIN_GNT
MAX_LAT
PRIMARY_BUS
SECONDARY_BUS
SEC_LATENCY_TIMER
IO_BASE
IO_LIMIT
SEC_STATUS
MEMORY_BASE
MEMORY_LIMIT
PREF_MEMORY_BASE
PREF_MEMORY_LIMIT
PREF_BASE_UPPER32
PREF_LIMIT_UPPER32
IO_BASE_UPPER16
IO_LIMIT_UPPER16
BRIDGE_ROM_ADDRESS
BRIDGE_CONTROL
CB_CARDBUS_BASE
CB_CAPABILITIES
CB_SEC_STATUS
CB_BUS_NUMBER
CB_CARDBUS_NUMBER
CB_SUBORDINATE_BUS
CB_CARDBUS_LATENCY
CB_MEMORY_BASE_0
CB_MEMORY_LIMIT_0
CB_MEMORY_BASE_1
CB_MEMORY_LIMIT_1
CB_IO_BASE_0
CB_IO_BASE_0_HI
CB_IO_LIMIT_0
CB_IO_LIMIT_0_HI
CB_IO_BASE_1
CB_IO_BASE_1_HI
CB_IO_LIMIT_1
CB_IO_LIMIT_1_HI
CB_SUBSYSTEM_VENDOR_ID
CB_SUBSYSTEM_ID
CB_LEGACY_MODE_BASE
PCILIB OPTIONS
The PCI utilities use PCILIB (a portable library providing
platform-independent functions for PCI configuration space
access) to talk to the PCI cards. The following options
control parameters of the library, especially what access
method it uses. By default, PCILIB uses the first avail
able access method and displays no debugging messages.
Each switch is accompanied by a list of hardware/software
configurations it's supported in.
-P <dir>
Use Linux 2.1 style configuration access to direc
tory <dir> instead of /proc/bus/pci. (Linux 2.1 or
newer only)
mechanism 1. (i386 and compatible only)
-H2 Use direct hardware access via Intel configuration
mechanism 2. Warning: This method is able to
address only first 16 devices on any bus and it
seems to be very unrealiable in many cases. (i386
and compatible only)
-S Use PCI access syscalls. (Linux on Alpha and Ultra
Sparc only)
-F <file>
Extract all information from given file containing
output of lspci -x. This is very useful for analy
sis of user-supplied bug reports, because you can
display the hardware configuration in any way you
want without disturbing the user with requests for
more dumps. (All systems)
-G Increase debug level of the library. (All systems)
EXAMPLES
`setpci -d *:* latency_timer=40' sets the latency timer to
64 (40 hexadecimal).
`setpci -s 0 device_id vendor_id' lists ID's of devices in
slot 0 in all busses.
`setpci -s 12:3.4 3c.l=1,2,3' writes longword 1 to regis
ter 3c, 2 to register 3d and 3 to register 3e of device at
bus 12, slot 3, function 4.
SEE ALSO
lspci(8)
AUTHOR
The Linux PCI Utilities are maintained by Martin Mares
<mj@suse.cz>.
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