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setpci(8)                     Linux PCI Utilities                    setpci(8)



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.


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' -- 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 actu-
              ally execute 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 [[<&lt;bus>&gt;]:][<&lt;slot>&gt;][.[<&lt;func>&gt;]]
              Select  devices in specified bus, slot and function. Each compo-
              nent 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,  "0.3" selects third function of device 0 on all busses and
              ".4" selects only fourth function of each device.

       -d [<&lt;vendor>&gt;]:[<&lt;device>&gt;]
              Select devices with specified vendor and device  ID.  Both  ID's
              are  given  in  hexadecimal  and  may be omitted 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
       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


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 available access method and displays no debugging messages.  Each
       switch  is  accompanied  by  a list of hardware/software configurations
       it's supported in.


       -P <&lt;dir>&gt;
              Force use of Linux  /proc/bus/pci  style  configuration  access,
              using <&lt;dir>&gt; instead of /proc/bus/pci. (Linux 2.1 or newer only)

       -H1    Use  direct hardware access via Intel configuration 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 UltraSparc only)

       -F <&lt;file>&gt;
              Extract  all  information  from  given file containing output of
              lspci -x. This is very useful for analysis 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 hexa-
       decimal).

       `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 register 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 <mjATucw.cz>.



pciutils-2.1.11                 04 January 2003                      setpci(8)