d1efa6e93f
ConnectX-4/5 devices in mlx5core.
The dump is obtained by reading a predefined register map from the
non-destructive crspace, accessible by the vendor-specific PCIe
capability (VSC). The dump is stored in preallocated kernel memory and
managed by the mlx5tool(8), which communicates with the driver using a
character device node.
The utility allows to store the dump in format
<address> <value>
into a file, to reset the dump content, and to manually initiate the
dump.
A call to mlx5_fwdump() should be added at the places where a dump
must be fetched automatically. The most likely place is right before a
firmware reset request.
Submitted by: kib@
MFC after: 1 week
Sponsored by: Mellanox Technologies
98 lines
3.1 KiB
Groff
98 lines
3.1 KiB
Groff
.\"
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.\" Copyright (c) 2018 Mellanox Technologies
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd March 8, 2018
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.Dt mlx5tool 8
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.Os
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.Sh NAME
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.Nm mlx5tool
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.Nd Utility for managing Connect-X 4/5 Mellanox network adapters
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.Sh SYNOPSIS
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.Nm
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.Fl d Ar domain:bus:slot:func
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.Fl e
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.Nm
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.Fl d Ar domain:bus:slot:func
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.Fl r
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.Nm
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.Fl d Ar domain:bus:slot:func
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.Fl o Ar file
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.Fl w
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.Sh DESCRIPTION
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The
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.Nm
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utility is provided for management of the Connect-X 4 and 5 network adapters
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in the aspects not covered by the generic
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.Xr ifconfig 8
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command, mostly related to the PCIe attachment and internal card working.
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The utility executes commands on specific adapter, which is addressed using
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.Em device:bus:slot:function
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conventions of the PCIe buses.
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You can match adapters ethernet name and addresses using the
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.X pciconf 8
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utility.
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The address is passed as an argument of the
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.Fl d
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option, which must be specified for each invocation.
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.Pp
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When the driver detects the malfunctioning of the hardware, or by user
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request, it is possible to create
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.Em firmware dump ,
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which contains debugging information about internal device state, for
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analysis of the failure by the Mellanox support team.
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.Pp
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The following commands are currently implemented:
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.Bl -tag -width indent
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.It Fl e
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Take the snapshot of the firmware registers state and store it in the
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kernel buffer.
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The buffer must be empty, in other words, no dumps should be written so
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far, or existing dump cleared with the
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.Fl r
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command for the specified device.
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.It Fl r
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Clear the stored firmware dump, preparing the kernel buffer for
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the next dump.
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.It Fl w
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Fetche the stored firmware dump and writes it into the file specified
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by the
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.Fl o
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option argument.
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.El
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.Sh FILES
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The
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.Pa /dev/mlx5ctl
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.Xr devfs 5
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node is used to pass commands to the driver.
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.Sh SEE ALSO
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.Xr mlx5en 4 ,
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.Xr mlx5ib 4 ,
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.Xr mlx5io 4 ,
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.Xr ifconfig 8
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and
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.Xr pciconf 8 .
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