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 March 24, 2012 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_load="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 73The chips supported by the 74.Nm 75driver are: 76.Pp 77.Bl -bullet -compact 78.It 79National Semiconductor DP83065 Saturn Gigabit Ethernet 80.It 81Sun Cassini Gigabit Ethernet 82.It 83Sun Cassini+ Gigabit Ethernet 84.El 85.Pp 86The 87following add-on cards are known to work with the 88.Nm 89driver at this time: 90.Pp 91.Bl -bullet -compact 92.It 93Sun GigaSwift Ethernet 1.0 MMF (Cassini Kuheen) 94(part no.\& 501-5524) 95.It 96Sun GigaSwift Ethernet 1.0 UTP (Cassini) 97(part no.\& 501-5902) 98.It 99Sun GigaSwift Ethernet UTP (GCS) 100(part no.\& 501-6719) 101.It 102Sun Quad GigaSwift Ethernet UTP (QGE) 103(part no.\& 501-6522) 104.It 105Sun Quad GigaSwift Ethernet PCI-X (QGE-X) 106(part no.\& 501-6738) 107.El 108.Sh NOTES 109On sparc64 the 110.Nm 111driver respects the 112.Va local-mac-address? 113system configuration variable which can be set in the Open Firmware boot 114monitor using the 115.Ic setenv 116command or by 117.Xr eeprom 8 . 118If set to 119.Dq Li false 120(the default), the 121.Nm 122driver will use the system's default MAC address for all of its devices. 123If set to 124.Dq Li true , 125the unique MAC address of each interface is used if present rather than 126the system's default MAC address. 127.Pp 128Supported interfaces having their own MAC address include on-board 129versions on boards equipped with more than one Ethernet interface and 130all add-on cards. 131.Sh SEE ALSO 132.Xr altq 4 , 133.Xr miibus 4 , 134.Xr netintro 4 , 135.Xr vlan 4 , 136.Xr eeprom 8 , 137.Xr ifconfig 8 138.Sh HISTORY 139The 140.Nm 141device driver appeared in 142.Fx 8.0 143and 144.Fx 7.3 . 145It is named after the 146.Nm 147driver which first appeared in 148.Ox 4.1 149and supports the same set of controllers but is otherwise unrelated. 150.Sh AUTHORS 151.An -nosplit 152The 153.Nm 154driver was written by 155.An Marius Strobl Aq Mt marius@FreeBSD.org 156based on the 157.Xr gem 4 158driver. 159