GEM(4) | Device Drivers Manual | GEM(4) |
gem
—
gem* at pci? dev ? function ?
gem* at sbus? slot ? offset ?
Configuration of PHYs may also be necessary. See mii(4).
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.
Cards supported by this driver include:
The GEM family supports hardware checksumming to assist in
computing IPv4 TCP checksums. The gem
driver
supports this feature of the chip. See
ifconfig(8) for information
on how to enable this feature.
Sun Microsystems, GEM Gigabit Ethernet ASIC Specification, http://www.sun.com/processors/manuals/ge.pdf.
Sun Microsystems, Sbus GEM Specification, http://mediacast.sun.com/users/Barton808/media/gem_sbus-1.pdf.
gem
device driver appeared in
NetBSD 1.6. Support for PCI SX fibre cards was added
in NetBSD 5.0. Support for SBus SX fibre cards was
added in NetBSD 5.0.
gem
driver was written by Eduardo
Horvath ⟨eeh@NetBSD.org⟩. SX fibre support was added by
Julian Coleman ⟨jdc@NetBSD.org⟩. The man
page was written by Thomas Klausner
⟨wiz@NetBSD.org⟩.
On the SX fibre variants of the hardware, the link will stay down
if there is a duplex mismatch. Also, packet transmission may fail when in
half-duplex
mode.
June 2, 2018 | NetBSD 9.4 |