7727ac725d
down() must not be used in softirq context: ``` [ 613.686994] BUG: sleeping function called from invalid context at ../kernel/locking/semaphore.c:58 [ 613.687003] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 29, name: ktimers/1 [ 613.687007] preempt_count: 0, expected: 0 [ 613.687009] RCU nest depth: 3, expected: 0 [ 613.687013] CPU: 1 PID: 29 Comm: ktimers/1 Tainted: G W OE 6.1.38-lp154.12-0601rt #1 1ef8e7f7e45a6388beff51e7b17265074b1375d6 [ 613.687020] Hardware name: ICP / iEi IMBA-9454ISA/IMBA-9454ISA(E168), BIOS 080014 02/20/2009 [ 613.687023] Call Trace: [ 613.687029] <TASK> [ 613.687034] dump_stack_lvl+0x44/0x5c [ 613.687046] __might_resched+0x171/0x1c0 [ 613.687055] ? check_slave_config_states+0x100/0x100 [ec_mini 7f93b9d1541d0037eab9400e73ee29f252250780] [ 613.687070] down+0x1e/0x70 [ 613.687076] cyclic_task+0x11/0xdc [ec_mini 7f93b9d1541d0037eab9400e73ee29f252250780] [ 613.687088] call_timer_fn+0x29/0x190 [ 613.687096] run_timer_softirq+0x4d5/0x570 [ 613.687104] ? __schedule+0x32b/0x1330 [ 613.687110] __do_softirq+0xd5/0x2ec [ 613.687117] ? smpboot_thread_fn+0x23/0x300 [ 613.687127] run_timersd+0x60/0xb0 [ 613.687130] smpboot_thread_fn+0x24c/0x300 [ 613.687133] ? smpboot_unregister_percpu_thread+0x70/0x70 [ 613.687135] kthread+0x129/0x140 [ 613.687138] ? kthread_complete_and_exit+0x20/0x20 [ 613.687141] ret_from_fork+0x22/0x30 [ 613.687146] </TASK> ``` |
||
|---|---|---|
| devices | ||
| documentation | ||
| doxygen-layout@fa4893ab56 | ||
| examples | ||
| include | ||
| lib | ||
| master | ||
| script | ||
| tool | ||
| tty | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .gitmodules | ||
| .hgignore | ||
| AUTHORS | ||
| COPYING | ||
| COPYING.LESSER | ||
| CodingStyle.md | ||
| Doxyfile.in | ||
| FEATURES.md | ||
| INSTALL.md | ||
| Kbuild.in | ||
| Makefile.am | ||
| Makefile.kbuild | ||
| NEWS | ||
| README.EoE | ||
| README.md | ||
| TODO | ||
| bootstrap | ||
| configure.ac | ||
| ethercat.spec.in | ||
| globals.h | ||
README.md
This is the README file of the IgH EtherCAT Master.
vim: spelllang=en spell tw=78
Contents:
General Information
This is an open-source EtherCAT master implementation for Linux 2.6 or newer.
See the features file for a list of features. For more
information, see http://etherlab.org/en/ethercat.
or contact
Dipl.-Ing. (FH) Florian Pose fp@igh.de
Ingenieurgemeinschaft IgH
Nordsternstraße 66
D-45329 Essen
http://igh.de
Documentation
Handbook
The PDF documentation is generated via LaTeX and can be build with the
following steps:
cd documentation
make
The PDF is automatically held up-to-date and can be downloaded from
GitLab.
Doxygen
To generate the Doxygen documentation, the following commands can be used.
Therefore, the configure script must have run (see the install
file).
git submodule update --init
make doc
An up-to-date Doxygen output can be found on
docs.etherlab.org.
Requirements
Software requirements
Configured sources for the Linux 2.6 (or newer) kernel are required to build
the EtherCAT master.
Hardware requirements
A table of supported hardware can be found at
http://etherlab.org/en/ethercat/hardware.php.
Building and installing
See the install file.
Realtime and Tuning
Realtime patches for the Linux kernel are supported, but not required. The
realtime processing has to be done by the calling module (see API
documentation). The EtherCAT master code itself is passive (except for the
idle mode and EoE).
To avoid frame timeouts, deactivating DMA access for hard drives is
recommended (hdparm -d0 <DEV>).
License
Copyright (C) 2006-2023 Florian Pose, Ingenieurgemeinschaft IgH
This file is part of the IgH EtherCAT Master.
The IgH EtherCAT Master is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 2, as
published by the Free Software Foundation.
The IgH EtherCAT Master is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
the IgH EtherCAT Master; if not, write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Coding Style
Developers shall use the coding style rules in the coding style
file.