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GCU(4) Device Drivers Manual GCU(4)

NAME

gcuIntel EP80579 Global Configuration Unit

SYNOPSIS

gcu* at pci?

DESCRIPTION

The gcu driver provides access to the miibus that is hidden behind the GCU device. It is used to control PHYs on embedded designs utilizing Intel's EP80579 chips.
The GCU also provides access to CAN, SSP and TDM signal strength drivers, but since they are not supported by OpenBSD the driver does not provide any functionality related to them.

SEE ALSO

em(4), intro(4), netintro(4), pci(4)
Intel's EP80579 Datasheet: http://download.intel.com/design/intarch/ep80579/320066.pdf

HISTORY

The gcu driver first appeared in OpenBSD 4.7.

AUTHORS

The gcu driver was written by Dariusz Swiderski <dms@openbsd.org>, partially based on the FreeBSD driver released by Intel under the ISC license.
July 16, 2013 OpenBSD-current