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GEM(4) BSD Kernel Interfaces Manual GEM(4) NAME gem -- ERI/GEM/GMAC Ethernet device driver SYNOPSIS To compile this driver into the kernel, place the following lines in your kernel configuration file: device miibus device gem Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): if_gem_load="YES" DESCRIPTION The gem 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 many Sun UltraSPARCs. HARDWARE Chips supported by the gem driver include: o Apple GMAC o Sun ERI 10/100 Mbps Ethernet o Sun GEM Gigabit Ethernet The following add-on cards are known to work with the gem driver at this time: o Sun Gigabit Ethernet PCI 2.0/3.0 (GBE/P) (part no. 501-4373) NOTES On sparc64 the gem driver respects the local-mac-address? system configu- ration variable which can be set in the Open Firmware boot monitor using the setenv command or by eeprom(8). If set to "false" (the default), the gem driver will use the system's default MAC address for all of its de- vices. If set to "true", the unique MAC address of each interface is used if present rather than the system's 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 inter- face and the Sun Gigabit Ethernet 2.0/3.0 GBE add-on cards. CAVEATS Currently the gem driver fails to attach to Sun Gigabit Ethernet SBus 2.0/3.0 (GBE/S) cards, as no SBus front-end has been written so far. SEE ALSO altq(4), hme(4), miibus(4), netintro(4), eeprom(8), ifconfig(8) HISTORY The gem device driver appeared in NetBSD 1.6. The first FreeBSD version to include it was FreeBSD 5.0. AUTHORS The gem driver was written by Eduardo Horvath <eeh@NetBSD.org>. The man page was written by Thomas Klausner <wiz@NetBSD.org>. BSD September 26, 2007 BSD
NAME | SYNOPSIS | DESCRIPTION | HARDWARE | NOTES | CAVEATS | SEE ALSO | HISTORY | AUTHORS
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