e808190a59
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
143 lines
4.1 KiB
Groff
143 lines
4.1 KiB
Groff
.\"
|
|
.\" Copyright (c) 2018 Mellanox Technologies
|
|
.\" 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.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd February 20, 2018
|
|
.Dt mlx5io 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm mlx5io
|
|
.Nd IOCTL interface to manage Connect-X 4/5 Mellanox network adapters
|
|
.Sh SYNOPSIS
|
|
.In dev/mlx5/mlx5io.h
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
interface is provided for management of the Connect-X 4 and 5 network adapters
|
|
in the aspects not covered by the generic network configuration,
|
|
mostly related to the PCIe attachment and internal card working.
|
|
Interface consists of the commands, which are passed by means of
|
|
.Xr ioctl 2
|
|
on the file descriptor, opened from the
|
|
.Pa /dev/mlx5ctl
|
|
device node.
|
|
.Pp
|
|
The following commands are implemented:
|
|
.Bl -tag -width indent
|
|
.It Dv MLX5_FWDUMP_FORCE
|
|
Take the snapshot of the firmware registers state and store it in the
|
|
kernel buffer.
|
|
The buffer must be empty, in other words, no dumps should be written so
|
|
far, or existing dump cleared with the
|
|
.Dv MLX5_FWDUMP_RESET
|
|
command for the specified device.
|
|
The argument for the command should point to the
|
|
.Vt struct mlx5_fwdump_addr
|
|
structure, containing the PCIe bus address of the device.
|
|
.Bd -literal
|
|
struct mlx5_fwdump_addr {
|
|
uint32_t domain;
|
|
uint8_t bus;
|
|
uint8_t slot;
|
|
uint8_t func;
|
|
};
|
|
.Ed
|
|
.It Dv MLX5_FWDUMP_RESET
|
|
Clear the stored firmware dump, preparing the kernel buffer for
|
|
the next dump.
|
|
The argument for the command should point to the
|
|
.Vt struct mlx5_fwdump_addr
|
|
structure, containing the PCIe bus address of the device.
|
|
.It Dv MLX5_FWDUMP_GET
|
|
Fetch the stored firmware dump into the user memory.
|
|
The argument to the command should point to the input/output
|
|
.Vt struct mlx5_fwdump_get
|
|
structure.
|
|
Its
|
|
.Dv devaddr
|
|
field specifies the address of the device, the
|
|
.Dv buf
|
|
fields points to the array of
|
|
.Vt struct mlx5_fwdump_reg
|
|
of records of the registers values, the size of the array is specified
|
|
in the
|
|
.Dv reg_cnt
|
|
field.
|
|
.Bd -literal
|
|
struct mlx5_fwdump_get {
|
|
struct mlx5_fwdump_addr devaddr;
|
|
struct mlx5_fwdump_reg *buf;
|
|
size_t reg_cnt;
|
|
size_t reg_filled; /* out */
|
|
};
|
|
.Ed
|
|
.Pp
|
|
On successfull return, the
|
|
.Dv reg_filled
|
|
field reports the number of the
|
|
.Dv buf
|
|
array elements actually filled with the registers values.
|
|
If
|
|
.Dv buf
|
|
contains the
|
|
.Dv NULL
|
|
pointer, no registers are filled, but
|
|
.Dv reg_filled
|
|
still contains the number of registers that should be passed for
|
|
the complete dump.
|
|
.Pp
|
|
The
|
|
.Vt struct mlx5_fwdump_reg
|
|
element contains the address of the register in the field
|
|
.Dv addr ,
|
|
and its value in the field
|
|
.Dv val .
|
|
.Bd -literal
|
|
struct mlx5_fwdump_reg {
|
|
uint32_t addr;
|
|
uint32_t val;
|
|
};
|
|
.Ed
|
|
.El
|
|
.Sh FILES
|
|
The
|
|
.Pa /dev/mlx5ctl
|
|
.Xr devfs 5
|
|
node is used to pass commands to the driver.
|
|
.Sh RETURN VALUES
|
|
If successful, the IOCTL returns zero.
|
|
Otherwise, -1 is returned and the global variable
|
|
.Va errno
|
|
is set to indicate the error.
|
|
.Sh SEE ALSO
|
|
.Xr errno 2 ,
|
|
.Xr ioctl 2 ,
|
|
.Xr mlx5en 4 ,
|
|
.Xr mlx5ib 4 ,
|
|
.Xr mlx5tool 8
|
|
and
|
|
.Xr pci 9 .
|