149 lines
4.8 KiB
Groff
149 lines
4.8 KiB
Groff
.\" Copyright (c) 2006, Myricom Inc
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions are met:
|
|
.\"
|
|
.\" 1. Redistributions of source code must retain the above copyright notice,
|
|
.\" this list of conditions and the following disclaimer.
|
|
.\"
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" 3. Neither the name of the Myricom Inc nor the names of its
|
|
.\" contributors may be used to endorse or promote products derived from
|
|
.\" this software without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
.\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
.\" POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" * Other names and brands may be claimed as the property of others.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd February 9, 2006
|
|
.Dt MXGE 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm mxge
|
|
.Nd "Myricom Myri10GE 10 Gigabit Ethernet adapter driver"
|
|
.Sh SYNOPSIS
|
|
To compile this driver into the kernel,
|
|
place the following lines in your
|
|
kernel configuration file:
|
|
.Bd -ragged -offset indent
|
|
.Cd "device firmware"
|
|
.Cd "device mxge"
|
|
.Ed
|
|
.Pp
|
|
Alternatively, to load the driver as a
|
|
module at boot time, place the following lines in
|
|
.Xr loader.conf 5 :
|
|
.Bd -literal -offset indent
|
|
if_mxge_load="YES"
|
|
mxge_ethp_z8e_load="YES"
|
|
mxge_eth_z8e_load="YES"
|
|
.Ed
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
driver provides support for PCI Express 10 Gigabit Ethernet adapters based on
|
|
the Myricom LANai Z8E chip.
|
|
The driver supports Transmit/Receive checksum offload
|
|
and Jumbo Frames.
|
|
For further hardware information, see http://www.myri.com
|
|
.Pp
|
|
For questions related to hardware requirements,
|
|
refer to the documentation supplied with your Myri10GE adapter.
|
|
All hardware requirements listed apply to use with
|
|
.Fx .
|
|
.Pp
|
|
Support for Jumbo Frames is provided via the interface MTU setting.
|
|
Selecting an MTU larger than 1500 bytes with the
|
|
.Xr ifconfig 8
|
|
utility configures the adapter to receive and transmit Jumbo Frames.
|
|
The maximum MTU size for Jumbo Frames is 9000.
|
|
.Pp
|
|
For more information on configuring this device, see
|
|
.Xr ifconfig 8 .
|
|
.Sh HARDWARE
|
|
The
|
|
.Nm
|
|
driver supports 10 Gigabit Ethernet adapters based on the
|
|
Myricom LANai Z8E chips:
|
|
.Pp
|
|
.Bl -bullet -compact
|
|
.It
|
|
Myricom 10GBase-CX4 (10G-PCIE-8A-C, 10G-PCIE-8AL-C)
|
|
.It
|
|
Myricom 10GBase-R (10G-PCIE-8A-R, 10G-PCIE-8AL-R)
|
|
.It
|
|
Myricom 10G XAUI over ribbon fiber (10G-PCIE-8A-Q, 10G-PCIE-8AL-Q)
|
|
.El
|
|
.Sh LOADER TUNABLES
|
|
Tunables can be set at the
|
|
.Xr loader 8
|
|
prompt before booting the kernel or stored in
|
|
.Xr loader.conf 5 .
|
|
.Bl -tag -width indent
|
|
.It Va hw.mxge.flow_control_enabled
|
|
Whether or not hardware flow control is enabled on the adapter.
|
|
The default value is 1.
|
|
.It Va hw.mxge.intr_coal_delay
|
|
This value delays the generation of all interrupts in units of
|
|
1 microsecond.
|
|
The default value is 30.
|
|
.It Va hw.mxge.skip_pio_read
|
|
This value determines whether or not the driver may omit doing a
|
|
pio read in the interrupt handler which ensures that the interrupt
|
|
line has been deasserted when using xPIC interrupts.
|
|
A non-zero value
|
|
may result in lower CPU overhead, however it may also result in
|
|
spurious interrupts.
|
|
The default value is 0.
|
|
.El
|
|
.Sh DIAGNOSTICS
|
|
.Bl -diag
|
|
.It "mxge%d: Unable to allocate bus resource: memory"
|
|
A fatal initialization error has occurred.
|
|
.It "mxge%d: Unable to allocate bus resource: interrupt"
|
|
A fatal initialization error has occurred.
|
|
.It "mxge%d: Could not find firmware image %s"
|
|
The appropriate firmware kld module was not installed.
|
|
This is a fatal initialization error.
|
|
.El
|
|
.Sh SUPPORT
|
|
For general information and support,
|
|
go to the Myricom support website at:
|
|
.Pa http://www.myri.com/scs .
|
|
.Pp
|
|
If an issue is identified with the released source code on the supported kernel
|
|
with a supported adapter, email the specific information related to the
|
|
issue to
|
|
.Aq help@myri.com .
|
|
.Sh SEE ALSO
|
|
.Xr arp 4 ,
|
|
.Xr netintro 4 ,
|
|
.Xr ng_ether 4 ,
|
|
.Xr ifconfig 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
device driver first appeared in
|
|
.Fx 7.0 .
|
|
.Sh AUTHORS
|
|
The
|
|
.Nm
|
|
driver was written by
|
|
.An Andrew Gallatin Aq gallatin@FreeBSD.org .
|