PCICTL(8)               NetBSD System Manager's Manual               PCICTL(8)

NAME
     pcictl -- a program to manipulate the PCI bus

SYNOPSIS
     pcictl pcibus command [arg [...]]

DESCRIPTION
     pcictl allows a user or system administrator to access various resources
     on a PCI bus.

     The following commands are available:

     list [-n] [-b bus] [-d device] [-f function]

     List the devices in the PCI domain, either as names or, if -n is given,
     as numbers.  The bus, device, and function numbers may be specified by
     flags.  Any locator not specified defaults to a wildcard, or may be
     explicitly wildcarded by specifying ``any''.

     dump [-b bus] -d device [-f function]

     Dump the PCI configuration space for the specified device located at the
     specified bus, device, and function.  If the bus is not specified, it
     defaults to the bus number of the PCI bus specified on the command line.
     If the function is not specified, it defaults to 0.

     read [-b bus] -d device [-f function] reg

     Read the specified 32-bit aligned PCI configuration register and print it
     in hexadecimal to standard output.  If the bus is not specified, it
     defaults to the bus number of the PCI bus specified on the command line.
     If the function is not specified, it defaults to 0.

     WARNING: pcictl read is a dangerous command that can damage hardware and
     panic the operating system, even though it appears to be a harmless read-
     only operation.  It is meant as a diagnostic tool for experiments or to
     debug device drivers.  Do not use it as a substitute for a device driver!

     write [-b bus] -d device [-f function] reg value

     Write the specified value to the specified 32-bit aligned PCI configura-
     tion register.  If the bus is not specified, it defaults to the bus num-
     ber of the PCI bus specified on the command line.  If the function is not
     specified, it defaults to 0.

     WARNING: pcictl write is a dangerous command that can damage hardware and
     panic the operating system.  It is meant as a diagnostic tool for experi-
     ments or to debug device drivers.  Do not use it as a substitute for a
     device driver!

FILES
     /dev/pci* - PCI bus device nodes

SEE ALSO
     pci(3), pci(4), drvctl(8)

HISTORY
     The pcictl command first appeared in NetBSD 1.6.

NetBSD 7.0                     February 25, 2011                    NetBSD 7.0

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