Manual Pages  — GEM

gem – ERI/GEM/GMAC Ethernet device driver

SYNOPSIS DESCRIPTION HARDWARE NOTES SEE ALSO HISTORY AUTHORS

Chips supported by the gem driver include:

• Apple GMAC
• Sun ERI 10/100 Mbps Ethernet
• Sun GEM Gigabit Ethernet

The following add-on cards are known to work with the gem driver at this time:

• Sun Gigabit Ethernet PCI 2.0/3.0 (GBE/P) (part no.amp; 501-4373)
• Sun Gigabit Ethernet SBus 2.0/3.0 (GBE/S) (part no.amp; 501-4375)

On sparc64 the gem driver respects the local-mac-address? system configuration 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 devices. 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 interface and the Sun Gigabit Ethernet 2.0/3.0 GBE add-on cards.

The gem device driver appeared in NetBSD The first FreeBSD version to include it was FreeBSD 5.0 .

The gem driver was written for NetBSD by Eduardo Horvath <Mt eeh@NetBSD.org>. It was ported to FreeBSD by Thomas Moestl <Mt tmm@FreeBSD.org> and later on improved by Marius Strobl <Mt marius@FreeBSD.org>. The man page was written by Thomas Klausner <Mt wiz@NetBSD.org>.