setpci.man

   1 .TH setpci 8 "@TODAY@" "@VERSION@" "Linux PCI Utilities"
   2 .IX setpci
   3 .SH NAME
   4 setpci \- configure PCI devices
   5 .SH SYNOPSIS
   6 .B setpci
   7 .RB [ options ]
   8 .B devices
   9 .BR operations ...
  10
  11 .SH DESCRIPTION
  12 .PP
  13 .B setpci
  14 is a utility for querying and configuring PCI devices.
  15
  16 To make use of all the features of this program, you need to have Linux kernel
  17 2.1.82 or newer which supports the /proc/bus/pci interface. With older kernels,
  18 the PCI utilities have to use direct hardware access which is available
  19 only to root and it suffers from numerous race conditions and other problems.
  20
  21 All numbers are entered in hexadecimal notation.
  22
  23 .SH OPTIONS
  24 .TP
  25 .B -v
  26 Tells
  27 .I setpci
  28 to be verbose and display detailed information about configuration space accesses.
  29 .TP
  30 .B -f
  31 Tells
  32 .I setpci
  33 not to complain when there's nothing to do (when no devices are selected).
  34 This option is intended for use in widely-distributed configuration scripts
  35 where it's uncertain whether the device in question is present in the machine
  36 or not.
  37 .TP
  38 .B -D
  39 `Demo mode' -- simulate configuration space accesses instead of really doing them.
  40 It's useful to try
  41 .B setpci -vD
  42 to see what your complex sequence of
  43 .B setpci
  44 operations does before you actually execute it.
  45
  46 .SH DEVICE SELECTION
  47 .PP
  48 Before each sequence of operations you need to select which devices you wish that
  49 operation to affect.
  50 .TP
  51 .B -s [[<bus>]:][<slot>][.[<func>]]
  52 Select devices in specified bus, slot and function. Each component of the device
  53 address can be omitted or set as "*" meaning "any value". All numbers are
  54 hexadecimal.  E.g., "0:" means all devices on bus 0, "0" means all functions of device 0
  55 on any bus, "0.3" selects third function of device 0 on all busses and ".4" selects only
  56 fourth function of each device.
  57 .TP
  58 .B -d [<vendor>]:[<device>]
  59 Select devices with specified vendor and device ID. Both ID's are given in
  60 hexadecimal and may be omitted or given as "*" meaning "any value".
  61
  62 .SH OPERATIONS
  63 .PP
  64 To query value of a configuration register, just name it (either by typing its name or
  65 by typing register address with optional
  66 .BR .B ,
  67 .B .W
  68 or
  69 .B .L
  70 suffix specifying register width as byte, word or longword).
  71 .PP
  72 To set a register, write
  73 .BR reg = values
  74 where
  75 .B reg
  76 is the same you would use to query the register and
  77 .B values
  78 is a comma-separated list of values you want to write starting with the given
  79 address.
  80
  81 .SH REGISTER NAMES
  82 .PP
  83 .B setpci
  84 knows the following configuration register names. See PCI bus specs for their precise
  85 meaning or consult
  86 .B /usr/include/linux/pci.h
  87 for few comments.
  88 .PP
  89 .nf
  90 VENDOR_ID
  91 DEVICE_ID
  92 COMMAND
  93 STATUS
  94 REVISION
  95 CLASS_PROG
  96 CLASS_DEVICE
  97 CACHE_LINE_SIZE
  98 LATENCY_TIMER
  99 HEADER_TYPE
 100 BIST
 101 BASE_ADDRESS_0
 102 BASE_ADDRESS_1
 103 BASE_ADDRESS_2
 104 BASE_ADDRESS_3
 105 BASE_ADDRESS_4
 106 BASE_ADDRESS_5
 107 CARDBUS_CIS
 108 SUBSYSTEM_VENDOR_ID
 109 SUBSYSTEM_ID
 110 ROM_ADDRESS
 111 INTERRUPT_LINE
 112 INTERRUPT_PIN
 113 MIN_GNT
 114 MAX_LAT
 115 PRIMARY_BUS
 116 SECONDARY_BUS
 117 SUBORDINATE_BUS
 118 SEC_LATENCY_TIMER
 119 IO_BASE
 120 IO_LIMIT
 121 SEC_STATUS
 122 MEMORY_BASE
 123 MEMORY_LIMIT
 124 PREF_MEMORY_BASE
 125 PREF_MEMORY_LIMIT
 126 PREF_BASE_UPPER32
 127 PREF_LIMIT_UPPER32
 128 IO_BASE_UPPER16
 129 IO_LIMIT_UPPER16
 130 BRIDGE_ROM_ADDRESS
 131 BRIDGE_CONTROL
 132 CB_CARDBUS_BASE
 133 CB_CAPABILITIES
 134 CB_SEC_STATUS
 135 CB_BUS_NUMBER
 136 CB_CARDBUS_NUMBER
 137 CB_SUBORDINATE_BUS
 138 CB_CARDBUS_LATENCY
 139 CB_MEMORY_BASE_0
 140 CB_MEMORY_LIMIT_0
 141 CB_MEMORY_BASE_1
 142 CB_MEMORY_LIMIT_1
 143 CB_IO_BASE_0
 144 CB_IO_BASE_0_HI
 145 CB_IO_LIMIT_0
 146 CB_IO_LIMIT_0_HI
 147 CB_IO_BASE_1
 148 CB_IO_BASE_1_HI
 149 CB_IO_LIMIT_1
 150 CB_IO_LIMIT_1_HI
 151 CB_SUBSYSTEM_VENDOR_ID
 152 CB_SUBSYSTEM_ID
 153 CB_LEGACY_MODE_BASE
 154
 155 .SH PCILIB OPTIONS
 156 The PCI utilities use PCILIB (a portable library providing platform-independent
 157 functions for PCI configuration space access) to talk to the PCI cards. The following
 158 options control parameters of the library, especially what access method it uses.
 159 By default, PCILIB uses the first available access method and displays no debugging
 160 messages. Each switch is accompanied by a list of hardware/software configurations
 161 it's supported in.
 162
 163 .TP
 164 .B -P <dir>
 165 Use Linux 2.1 style configuration access to directory
 166 .B <dir>
 167 instead of /proc/bus/pci. (Linux 2.1 or newer only)
 168 .TP
 169 .B -H1
 170 Use direct hardware access via Intel configuration mechanism 1. (i386 and compatible only)
 171 .TP
 172 .B -H2
 173 Use direct hardware access via Intel configuration mechanism 2. Warning: This method
 174 is able to address only first 16 devices on any bus and it seems to be very
 175 unrealiable in many cases. (i386 and compatible only)
 176 .TP
 177 .B -S
 178 Use PCI access syscalls. (Linux on Alpha and UltraSparc only)
 179 .TP
 180 .B -F <file>
 181 Extract all information from given file containing output of lspci -x. This is very
 182 useful for analysis of user-supplied bug reports, because you can display the
 183 hardware configuration in any way you want without disturbing the user with
 184 requests for more dumps. (All systems)
 185 .TP
 186 .B -G
 187 Increase debug level of the library. (All systems)
 188
 189 .SH EXAMPLES
 190 .PP
 191 `setpci -d *:* latency_timer=40' sets the latency timer to 64 (40 hexadecimal).
 192 .PP
 193 `setpci -s 0 device_id vendor_id' lists ID's of devices in slot 0 in all busses.
 194 .PP
 195 `setpci -s 12:3.4 3c.l=1,2,3' writes longword 1 to register 3c, 2 to register 3d
 196 and 3 to register 3e of device at bus 12, slot 3, function 4.
 197
 198 .SH SEE ALSO
 199 .BR lspci (8)
 200
 201 .SH AUTHOR
 202 The Linux PCI Utilities are maintained by Martin Mares <mj@suse.cz>.