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 June 15, 2009 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 UTP (Cassini) 95(part no.\& 501-5902) 96.It 97Sun GigaSwift Ethernet UTP (GCS) 98(part no.\& 501-6719) 99.It 100Sun Quad GigaSwift Ethernet UTP (QGE) 101(part no.\& 501-6522) 102.El 103.Sh NOTES 104On sparc64 the 105.Nm 106driver respects the 107.Va local-mac-address? 108system configuration variable which can be set in the Open Firmware boot 109monitor using the 110.Ic setenv 111command or by 112.Xr eeprom 8 . 113If set to 114.Dq Li false 115(the default), the 116.Nm 117driver will use the system's default MAC address for all of its devices. 118If set to 119.Dq Li true , 120the unique MAC address of each interface is used if present rather than 121the system's default MAC address. 122.Pp 123Supported interfaces having their own MAC address include on-board 124versions on boards equipped with more than one Ethernet interface and 125all add-on cards. 126.Sh SEE ALSO 127.Xr altq 4 , 128.Xr miibus 4 , 129.Xr netintro 4 , 130.Xr vlan 4 , 131.Xr eeprom 8 , 132.Xr ifconfig 8 133.Sh HISTORY 134The 135.Nm 136device driver appeared in 137.Fx 8.0 138and 139.Fx 7.3 . 140It is named after the 141.Nm 142driver which first appeared in 143.Ox 4.1 144and supports the same set of controllers but is otherwise unrelated. 145.Sh AUTHORS 146.An -nosplit 147The 148.Nm 149driver was written by 150.An Marius Strobl 151.Aq marius@FreeBSD.org 152based on the 153.Xr gem 4 154driver. 155