---
name: "pcidump"
section: "8"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/pcidump"
---

# pcidump(8)

show PCI device data

## NAME

**pcidump** – show PCI device data

## SYNOPSIS

**pcidump** \[**-v**\] \[**-x** \| **-xx** \| **-xxx**\] \[**-d** *pcidev*\] \[*bus*:*dev*:*func*\]

**pcidump** **-r** *file* \[**-d** *pcidev*\] *bus*:*dev*:*func*

## DESCRIPTION

The **pcidump** utility displays the device address, vendor, and product name of PCI devices. When no arguments are given, information on all PCI devices in the system is shown; otherwise a single PCI domain or device may be specified.

The options are as follows:

- **-d** *pcidev*

  Specify a file to use for PCI lookups. If specified without *bus*:*dev*:*func*, all PCI devices in the domain will be shown.

- **-r** *file*

  Reads the PCI ROM from the device specified by *bus*:*dev*:*func*, and writes its contents to *file*.

- **-v**

  Shows detailed information about PCI devices.

- **-x**

  Shows a hexadecimal dump of the first 64 bytes of PCI config space.

- **-xx**

  Shows a hexadecimal dump of the full PCI config space.

- **-xxx**

  Shows a hexadecimal dump of the PCIe extended config space.

-

  *bus*:*dev*:*func* Show information about the PCI device specified by the tuple given on the command line. If the **-d** option is not given, */dev/pci* is used.

## FILES

- */dev/pci\**

  Device files for accessing PCI domains.

## SEE ALSO

[pci(4)](/pci/4.md)

## HISTORY

The **pcidump** utility first appeared in OpenBSD 4.3.

## AUTHORS

The **pcidump** utility was written by David Gwynne ⟨*dlg@openbsd.org*⟩.

## BUGS

The default behaviour of scanning all PCI domains is limited to those domains that have an entry in */dev*.