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27 .Dd September 15, 2008
32 .Nd ERI/GEM/GMAC Ethernet device driver
34 .Cd "gem* at pci? dev ? function ?"
35 .Cd "gem* at sbus? slot ? offset ?"
37 Configuration of PHYs may also be necessary.
43 driver provides support for the GMac Ethernet hardware found mostly in
44 the last Apple PowerBooks G3s and most G4-based Apple hardware, as
45 well as many Sun UltraSPARCs.
47 Cards supported by this driver include:
48 .Bl -bullet -compact -offset indent
50 Sun GEM gigabit ethernet (SX fibre variants)
57 The GEM family supports hardware checksumming to assist in computing
61 driver supports this feature of the chip.
64 for information on how to enable this feature.
72 .%T "GEM Gigabit Ethernet ASIC Specification"
74 .%O http://www.sun.com/processors/manuals/ge.pdf
77 .%T "Sbus GEM Specification"
79 .%O http://mediacast.sun.com/users/Barton808/media/gem_sbus-1.pdf
84 device driver appeared in
86 Support for PCI SX fibre cards was added in
88 Support for SBus SX fibre cards was added in
97 SX fibre support was added by
100 The man page was written by
104 The hardware checksumming support does not support IPv4 UDP, although this was
107 Also, the hardware IPv4 TCP receive checksumming support has bugs, so this is
110 On the SX fibre variants of the hardware, the link will stay down if there is
112 Also, packet transmission may fail when in