Red Hat LINUX 7.2 Reference Manual page 75

Section 4.2:Top-Level Files in /proc
• name — The name of the partition.
4.2.25 /proc/pci
This file contains a full listing of every PCI device on your system. Depending on the number of PCI
devices you have, /proc/pci can get rather long. An example from this file on a basic system looks
similar to this:
Bus 0, device
Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (rev 3).
Master Capable.
Prefetchable 32 bit memory at 0xe4000000 [0xe7ffffff].
Bus 0, device
PCI bridge: Intel Corporation 440BX/ZX - 82443BX/ZX AGP bridge (rev 3).
Master Capable.
Bus 0, device
ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 2).
Bus 0, device
IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 1).
Master Capable.
I/O at 0xd800 [0xd80f].
Bus 0, device
USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 1).
IRQ 5.
Master Capable.
I/O at 0xd400 [0xd41f].
Bus 0, device
Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 2).
IRQ 9.
Bus 0, device
Ethernet controller: Lite-On Communications Inc LNE100TX (rev 33).
IRQ 5.
Master Capable.
I/O at 0xd000 [0xd0ff].
Non-prefetchable 32 bit memory at 0xe3000000 [0xe30000ff].
Bus 0, device
VGA compatible controller: S3 Inc. ViRGE/DX or /GX (rev 1).
IRQ 11.
Master Capable.
Non-prefetchable 32 bit memory at 0xdc000000 [0xdfffffff].
This output shows a list of all PCI devices, sorted in the order of bus, device, and function. Beyond
providing the name and version of the device, which is always nice to know when you forget the brand
of your network interface card, this list also gives you detailed IRQ information so you can quickly
look for conflicts.
0, function 0:
Latency=64.
1, function 0:
Latency=64.
4, function 0:
4, function 1:
Latency=32.
4, function 2:
Latency=32.
4, function 3:
9, function 0:
Latency=32.
12, function 0:
Latency=32.
Min Gnt=128.
Min Gnt=4.Max Lat=255.
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