freebsd man page for devinfo

DEVINFO(8)						    BSD System Manager's Manual 						DEVINFO(8)

NAME
     devinfo -- print information about system device configuration

SYNOPSIS
     devinfo [-rv]
     devinfo -u

DESCRIPTION
     The devinfo utility, without any arguments, shows the hierarchy of devices available in the system, starting from the ``nexus'' device.

     The following options are accepted.

     -r      Causes hardware resource information (such as IRQ, I/O ports, I/O memory addresses) to be also listed, under each device that has
	     reserved those resources.

     -u      Displays the same information as with -r but sorts by resource type rather than by device, allowing to review the set of system
	     resources by usage and available resources.  I.e., it lists all the IRQ consumers together.

     -v      Display all devices in the driver tree, not just those that are attached or busy.	Without this flag, only those devices that have
	     attached are reported.

SEE ALSO
     systat(1), devinfo(3), iostat(8), pciconf(8), pnpinfo(8), vmstat(8), devclass(9), device(9)

AUTHORS
     Mike Smith <msmith@FreeBSD.org>

BSD
								 November 28, 2005							       BSD