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Manual Pages  — GEM

NAME

gem – GEM/GMAC Ethernet device driver

CONTENTS

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.

All controllers supported by the gem driver have TCP checksum offload capability for both receive and transmit, support for the reception and transmission of extended frames for vlan(4) and a 512-bit multicast hash filter.

HARDWARE

Chips supported by the gem driver include:

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

SEE ALSO

altq(4), miibus(4), netintro(4), vlan(4), ifconfig(8)

HISTORY

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

AUTHORS

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>.
GEM (4) April 18, 2023
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