Manual Reference Pages - GEM (4)
- ERI/GEM/GMAC Ethernet device driver
To compile this driver into the kernel,
place the following lines in your
kernel configuration file:
.Cd device miibus
.Cd device gem
Alternatively, to load the driver as a
module at boot time, place the following line in
driver provides support for the GMAC Ethernet hardware found mostly in
the last Apple PowerBooks G3s and most G4-based Apple hardware, as
well as Sun UltraSPARC machines.
All controllers supported by the
driver have TCP checksum offload capability for both receive and transmit,
support for the reception and transmission of extended frames for
and a 512-bit multicast hash filter.
Chips supported by the
- Apple GMAC
- Sun ERI 10/100 Mbps Ethernet
- Sun GEM Gigabit Ethernet
following add-on cards are known to work with the
driver at this time:
- Sun Gigabit Ethernet PCI 2.0/3.0 (GBE/P)
(part no. 501-4373)
- Sun Gigabit Ethernet SBus 2.0/3.0 (GBE/S)
(part no. 501-4375)
On sparc64 the
driver respects the
system configuration variable which can be set in the Open Firmware boot
monitor using the
command or by
If set to
(the default), the
driver will use the systems default MAC address for all of its devices.
If set to
the unique MAC address of each interface is used if present rather than
the systems default MAC address.
Supported interfaces having their own MAC address include the on-board
Sun ERI 10/100 Mbps on boards equipped with more than one Ethernet interface
and the Sun Gigabit Ethernet 2.0/3.0 GBE add-on cards.
device driver appeared in
.Nx 1.6 .
version to include it was
.Fx 5.0 .
driver was written for
.An Eduardo Horvath
It was ported to
.An Thomas Moestl
and later on improved by
.An Marius Strobl
The man page was written by
.An Thomas Klausner
Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.