setpci(8)		       The 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.

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


OPTIONS
       -v     Tells  setpci  to  be  verbose  and display detailed information
	      about configuration space accesses.

       -f     Tells setpci not to complain when theres nothing to do (when no
	      devices  are  selected).	 This  option  is  intended for use in
	      widely-distributed configuration scripts	where  its  uncertain
	      whether the device in question is present in the machine or not.

       -D     Demo mode -- dont write anything to the configuration  regis
	      ters.   Its  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.


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

       -s [[[[]:]]:][][.[]]
	      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 []:[]
	      Select  devices  with  specified vendor and device ID. Both IDs
	      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  val
       ues 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


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. Please see lspci(8) for a list of  switches  controlling
       behavior of the library.


EXAMPLES
       setpci  -d *:* latency_timer=40 sets the latency timer to 64 (40 hex
       adecimal).

       setpci -s 0 device_id vendor_id lists IDs of devices in	slot  0  in
       all buses.

       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.

       setpci -s 13:8.4 40.b=50:d0,04:0c,ff works on bus 13, device 8, func
       tion 4: turns bit 7 off and bits 6 and 4 on in the  byte  register  40;
       turns  bit 3 off and bit 2 on in the byte register 41; sets byte regis
       ter 42 to ff.


SEE ALSO
       lspci(8)


AUTHOR
       The PCI Utilities are maintained by Martin Mares .



pciutils-2.2.4-pre4		 30 July 2006			     setpci(8)