1.\" 2.\" Copyright (c) 2009 Marius Strobl <marius@FreeBSD.org> 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd May 3, 2010 29.Dt CAS 4 30.Os 31.Sh NAME 32.Nm cas 33.Nd Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn Gigabit Ethernet driver 34.Sh SYNOPSIS 35To compile this driver into the kernel, 36place the following lines in your 37kernel configuration file: 38.Bd -ragged -offset indent 39.Cd "device miibus" 40.Cd "device cas" 41.Ed 42.Pp 43Alternatively, to load the driver as a 44module at boot time, place the following line in 45.Xr loader.conf 5 : 46.Bd -literal -offset indent 47if_cas="YES" 48.Ed 49.Sh DESCRIPTION 50The 51.Nm 52driver provides support for the Sun Cassini/Cassini+ and National 53Semiconductor DP83065 Saturn Gigabit Ethernet controllers found 54on-board in Sun UltraSPARC machines and as add-on cards. 55.Pp 56All controllers supported by the 57.Nm 58driver have TCP/UDP checksum offload capability for both receive and 59transmit, support for the reception and transmission of extended frames 60for 61.Xr vlan 4 62and an interrupt coalescing/moderation mechanism as well as a 512-bit 63multicast hash filter. 64.Pp 65The 66.Nm 67driver also supports Jumbo Frames (up to 9022 bytes), which can be 68configured via the interface MTU setting. 69Selecting an MTU larger than 1500 bytes with the 70.Xr ifconfig 8 71utility configures the adapter to receive and transmit Jumbo Frames. 72.Sh HARDWARE 73.Pp 74The chips supported by the 75.Nm 76driver are: 77.Pp 78.Bl -bullet -compact 79.It 80National Semiconductor DP83065 Saturn Gigabit Ethernet 81.It 82Sun Cassini Gigabit Ethernet 83.It 84Sun Cassini+ Gigabit Ethernet 85.El 86.Pp 87The 88following add-on cards are known to work with the 89.Nm 90driver at this time: 91.Pp 92.Bl -bullet -compact 93.It 94Sun GigaSwift Ethernet 1.0 MMF (Cassini Kuheen) 95(part no.\& 501-5524) 96.It 97Sun GigaSwift Ethernet 1.0 UTP (Cassini) 98(part no.\& 501-5902) 99.It 100Sun GigaSwift Ethernet UTP (GCS) 101(part no.\& 501-6719) 102.It 103Sun Quad GigaSwift Ethernet UTP (QGE) 104(part no.\& 501-6522) 105.El 106.Sh NOTES 107On sparc64 the 108.Nm 109driver respects the 110.Va local-mac-address? 111system configuration variable which can be set in the Open Firmware boot 112monitor using the 113.Ic setenv 114command or by 115.Xr eeprom 8 . 116If set to 117.Dq Li false 118(the default), the 119.Nm 120driver will use the system's default MAC address for all of its devices. 121If set to 122.Dq Li true , 123the unique MAC address of each interface is used if present rather than 124the system's default MAC address. 125.Pp 126Supported interfaces having their own MAC address include on-board 127versions on boards equipped with more than one Ethernet interface and 128all add-on cards. 129.Sh SEE ALSO 130.Xr altq 4 , 131.Xr miibus 4 , 132.Xr netintro 4 , 133.Xr vlan 4 , 134.Xr eeprom 8 , 135.Xr ifconfig 8 136.Sh HISTORY 137The 138.Nm 139device driver appeared in 140.Fx 8.0 141and 142.Fx 7.3 . 143It is named after the 144.Nm 145driver which first appeared in 146.Ox 4.1 147and supports the same set of controllers but is otherwise unrelated. 148.Sh AUTHORS 149.An -nosplit 150The 151.Nm 152driver was written by 153.An Marius Strobl 154.Aq marius@FreeBSD.org 155based on the 156.Xr gem 4 157driver. 158