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setpci

NAME

setpci - configure PCI devices

SYNOPSIS

setpci [options] devices operations...

DESCRIPTION

setpci is a utility for querying and configuring PCI devices.

All numbers are entered in hexadecimal notation.

Root privileges are necessary for almost all operations, excluding reads of the standard header of the configuration space on some operating systems. Please see lspci(8) for details on access rights.

OPTIONS

General 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 configuration scripts where it's uncertain whether the device in question is present in the machine or not.

-D

`Demo mode' -- don't write anything to the configuration registers. It's useful to try setpci -vD to see what your complex sequence of setpci operations does before you actually execute it.

--version

Shows setpci version. This option should be used stand-alone.

PCI access options

The PCI utilities use the PCI library to talk to PCI devices (see pcilib(7) for details). You can use the following options to influence its behavior:

-A <method>

The library supports a variety of methods to access the PCI hardware. By default, it uses the first access method available, but you can use this option to override this decision. See -A help for a list of available methods and their descriptions.

-O <param>=<value>

The behavior of the library is controlled by several named parameters. This option allows to set the value of any of the parameters. Use -O help for a list of known parameters and their default values.

-H1

Use direct hardware access via Intel configuration mechanism 1. (This is a shorthand for -A intel-conf1.)

-H2

Use direct hardware access via Intel configuration mechanism 2. (This is a shorthand for -A intel-conf2.)

-G

Increase debug level of the library.

DEVICE SELECTION

Before each sequence of operations you need to select which devices you wish that operation to affect.

-s [[[[<domain>]:]<bus>]:][<slot>][.[<func>]]

Show only devices in the specified domain (in case your machine has several host bridges, they can either share a common bus number space or each of them can address a PCI domain of its own; domains are numbered from 0 to ffff), bus (0 to ff), slot (0 to 1f) and function (0 to 7). Each component of the device address can be omitted or set to "*", both 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, "0.3" selects third function of device 0 on all buses and ".4" shows only the 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 omitted or given as "*", both 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 as 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. Each value to be written can be specified either as a hexadecimal number or as a bits:mask pair which causes the bits corresponding to binary ones in the mask to be changed to values of the corresponding bits in the bits

REGISTER NAMES

setpci knows the following configuration register names. See PCI bus specifications for their precise meaning or consult header.h or /usr/include/linux/pci.h for a couple of 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
 SUBORDINATE_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
 
 

 

SEE ALSO

lspci(8), pcilib(7)

AUTHOR

The PCI Utilities are maintained by Martin Mares <mj@ucw.cz>.