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sn(4) [netbsd man page]

SN(4)							   BSD Kernel Interfaces Manual 						     SN(4)

sn -- National Semiconductor DP83932 (SONIC) based Ethernet device driver SYNOPSIS
arc sn0 at jazzio? mac68k sn* at obio? sn* at nubus? DESCRIPTION
The sn interface provides access to a 10 Mb/s Ethernet network via the National Semiconductor DP83932 (SONIC) Ethernet chip set. Each of the host's network addresses is specified at boot time with an SIOCSIFADDR ioctl(2). The sn interface employs the address resolution protocol described in arp(4) to dynamically map between Internet and Ethernet addresses on the local network. HARDWARE
arc The sn driver supports on-board JAZZ based SONIC interfaces found on Acer PICA and NEC machines. mac68k The sn driver is currently known to support the following NuBus cards: o Apple LC Twisted-pair (part #820-0532-A) PDS card o Cayman Gatorcard PDS o Dayna DaynaPort/E30 In addition, the sn interface supports the following interfaces: o on-board Ethernet for non-AV Quadras o on-board Ethernet for 500-series PowerBooks o Apple CS Ethernet Twisted-pair card for Comm Slot found on LC575, Quadra 630, LC630, and Performa 580. DIAGNOSTICS
sn%d: transmit FIFO underrun sn%d: receive FIFO overrun sn%d: receive buffer exceeded sn%d: receive buffers exhausted sn%d: receive descriptors exhausted These messages indicate that the interface gets errors (due to heavy load etc.) and reinitialized. SEE ALSO
arp(4), inet(4), netintro(4), ifconfig(8) HISTORY
The sn interface for mac68k, which was derived from a driver for old NetBSD/pica port, first appeared in NetBSD 1.3. Jason Thorpe has rewritten a new machine independent SONIC driver which uses bus_dma(9) and bus_space(9) APIs after NetBSD 1.5 release, and NetBSD/arc has been switched to using the machine independent (MI) driver. NetBSD/mac68k has also been switched to using the MI driver after the NetBSD 4.0 release. BSD
May 16, 2009 BSD

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GEM(4)							   BSD Kernel Interfaces Manual 						    GEM(4)

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 hard- ware, as well as Sun UltraSPARC machines. 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: 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) o Sun Gigabit Ethernet SBus 2.0/3.0 (GBE/S) (part no. 501-4375) NOTES
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. SEE ALSO
altq(4), miibus(4), netintro(4), vlan(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 for NetBSD by Eduardo Horvath <>. It was ported to FreeBSD by Thomas Moestl <> and later on improved by Marius Strobl <>. The man page was written by Thomas Klausner <>. BSD
December 25, 2009 BSD
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