1 .\" $OpenBSD: nfe.4,v 1.7 2006/02/28 08:13:47 jsg Exp $
3 .\" Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org>
5 .\" Permission to use, copy, modify, and distribute this software for any
6 .\" purpose with or without fee is hereby granted, provided that the above
7 .\" copyright notice and this permission notice appear in all copies.
9 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 .Nd "NVIDIA nForce MCP Ethernet driver"
26 To compile this driver into the kernel,
27 place the following lines in your
28 kernel configuration file:
29 .Bd -ragged -offset indent
34 Alternatively, to load the driver as a
35 module at boot time, place the following line in
37 .Bd -literal -offset indent
43 driver supports PCI Ethernet adapters based on the NVIDIA
44 nForce Media and Communications Processors (MCP), such as
45 the nForce, nForce 2, nForce 3, CK804, MCP04, MCP51, MCP55,
46 MCP61, MCP65, MCP67 and MCP73 Ethernet controller chips.
48 Supported features include (hardware support provided):
52 Receive/Transmit IP/TCP/UDP checksum offload
54 Hardware VLAN tag insertion/stripping
56 TCP segmentation offload (TSO)
63 Support for Jumbo Frames is provided via the interface MTU setting.
64 Selecting an MTU larger than 1500 bytes with the
66 utility configures the adapter to receive and transmit Jumbo Frames.
70 driver supports the following media types:
71 .Bl -tag -width "10baseT/UTP"
73 Enable autoselection of the media type and options.
77 Set 100Mbps (Fast Ethernet) operation.
79 Set 1000Mbps (Gigabit Ethernet) operation (recent models only).
84 driver supports the following media options:
85 .Bl -tag -width ".Cm 10baseT/UTP"
87 Force half duplex operation.
89 Force full duplex operation.
92 For more information on configuring this device, see
97 driver supports the following NVIDIA MCP onboard adapters:
101 NVIDIA nForce MCP Networking Adapter
103 NVIDIA nForce MCP04 Networking Adapter
105 NVIDIA nForce 430 MCP12 Networking Adapter
107 NVIDIA nForce 430 MCP13 Networking Adapter
109 NVIDIA nForce MCP51 Networking Adapter
111 NVIDIA nForce MCP55 Networking Adapter
113 NVIDIA nForce MCP61 Networking Adapter
115 NVIDIA nForce MCP65 Networking Adapter
117 NVIDIA nForce MCP67 Networking Adapter
119 NVIDIA nForce MCP73 Networking Adapter
121 NVIDIA nForce2 MCP2 Networking Adapter
123 NVIDIA nForce2 400 MCP4 Networking Adapter
125 NVIDIA nForce2 400 MCP5 Networking Adapter
127 NVIDIA nForce3 MCP3 Networking Adapter
129 NVIDIA nForce3 250 MCP6 Networking Adapter
131 NVIDIA nForce3 MCP7 Networking Adapter
133 NVIDIA nForce4 CK804 MCP8 Networking Adapter
135 NVIDIA nForce4 CK804 MCP9 Networking Adapter
138 Tunables can be set at the
140 prompt before booting the kernel or stored in
142 .Bl -tag -width indent
143 .It Va hw.nfe.msi_disable
144 Whether or not MSI support is enabled in the driver.
145 The default value is 0.
146 .It Va hw.nfe.msix_disable
147 Whether or not MSI-X support is enabled in the driver.
148 The default value is 0.
153 variables can be used to modify or monitor
156 .Bl -tag -width indent
157 .It Va dev.nfe.%d.process_limit
158 Maximum number of Rx events to be processed in the event loop
159 before rescheduling a taskqueue.
160 The accepted range is 50 to 255, the default value is 192.
161 The interface does not need to be brought down and up again
162 before a change takes effect.
177 device driver first appeared in
185 driver was written by
190 .Aq damien@openbsd.org .
196 .An Shigeaki Tagashira
197 .Aq shigeaki@se.hiroshima-u.ac.jp .