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<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Hi Scott,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">To fix the startup stall, please try the appended patch.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">I tested it over the weekend and found no more “BUG! Tx Ring full” in the kernel log this morning.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">However, I cannot reproduce the hard lockups. Do you have any hint on how to provoke them?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">My setup:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Beckhoff CX5130<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Ubuntu 14.04<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Kernel 4.1.7-rt8<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:35.4pt"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Stable 1.5.2 Etherlab with recent CCAT v0.13 bundle<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">My test script:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">while :<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">do<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"> /etc/init.d/ethercat restart<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"> sleep 5<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">done<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">The patch:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"># HG changeset patch<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"># User Patrick Bruenn <p.bruenn@beckhoff.com><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"># Date 1445844490 -3600<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"># Mon Oct 26 08:28:10 2015 +0100<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"># Branch stable-1.5<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"># Node ID 1d9be5716deec3c7e6a21dae85a8ad2ef8825b92<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"># Parent 0613017547feee7a2189fe71724ca5bcd1fcb61f<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">fix ccat startup stall. In case the dma memory was allocated above 4 GB limit, CCAT is unable to access it.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"> -> limit the dma_mask to 32-bit to omit this situation<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">diff -r 0613017547fe -r 1d9be5716dee devices/ccat/module.c<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">--- a/devices/ccat/module.c Tue Oct 13 12:24:16 2015 +0200<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">+++ b/devices/ccat/module.c Mon Oct 26 08:28:10 2015 +0100<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">@@ -288,9 +288,8 @@<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"> goto cleanup_pci_device;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">- if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">- pr_debug("64 bit DMA supported, pci rev: %u\n", revision);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">- } else if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">+ /* CCAT is unable to access memory above 4 GB */<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">+ if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"> pr_debug("32 bit DMA supported, pci rev: %u\n", revision);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"> } else {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"> pr_warn("No suitable DMA available, pci rev: %u\n", revision);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Patrick<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> etherlab-dev [mailto:etherlab-dev-bounces@etherlab.org]
<b>On Behalf Of </b>Tillman, Scott<br>
<b>Sent:</b> Freitag, 23. Oktober 2015 05:52<br>
<b>To:</b> etherlab-dev@etherlab.org<br>
<b>Subject:</b> [etherlab-dev] CCAT startup failures<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I am having problems with the startup of the CCAT driver (both v12 to the new v13). When I boot up the driver is loading (ccat shows via lsmod). When I start the master it swaps over to ec_ccat, but sometimes the master
never begins communicating on the bus. In these situations I can often remove and reinsert the ec_ccat module and the master will start up. Occasionally I get a hard lockup of the system (Alt-SysRq-B won’t reboot) when trying to unload or reload the module,
but that’s possibly unrelated. I’m looking for solutions to both problems (startup stall and hard lockups).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">System details:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:36.0pt"><span lang="EN-US">Beckhoff CX5130<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> Ubuntu 14.04 (Server) with ubuntu-desktop installed<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> Kernel 3.16.7 with RTAI 4.1 ipipe patch<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> Stable 1.5.2 Etherlab with recent CCAT v0.13 bundle<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:36.0pt"><span lang="EN-US">Some changes that are included in the bundle I’ve already posted<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am accessing the master via the user space library and using the LXRT library for accessing RTAI.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">At this point I’m looking for suggestions on how to try to establish the root cause of these problems. I don’t have much experience debugging kernel crashes, and what experience I do have is 15 years out of date. I
have no prior exposure to the linux network subsystem.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Any help would be appreciated. Below are snippets of the syslog around various interesting conditions. Let me know if I can provide any other possibly useful data.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">-Scott Tillman<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">Advisory Software Engineer<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">Bell + Howell<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">919-767-6745<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">What I know so far:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I occasionally see this constantly repeating in my syslog during the stalled state:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 21 10:58:03 ubuntu kernel: [ 17.184386] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 21 10:58:03 ubuntu kernel: [ 17.237043] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 21 10:58:03 ubuntu kernel: [ 17.289702] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 21 10:58:03 ubuntu kernel: [ 17.342599] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">etc. This continues until I rmmod ec_ccat.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Relevant logs on initial startup try in stalled state:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu dhclient: DHCPDISCOVER on CX5130_x001 to 255.255.255.255 port 67 interval 3 (xid=0x730db6c3)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu kernel: [ 12.476197] EtherCAT: Master driver 1.5.2 71593adce088+<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu kernel: [ 12.481558] EtherCAT 0: Registering RTDM device EtherCAT.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu kernel: [ 12.481586] EtherCAT: 1 master waiting for devices.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu avahi-daemon[623]: Interface CX5130_ebus.IPv6 no longer relevant for mDNS.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu avahi-daemon[623]: Leaving mDNS multicast group on interface CX5130_ebus.IPv6 with address fe80::201:5ff:fe1a:d56d.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu avahi-daemon[623]: Withdrawing address record for fe80::201:5ff:fe1a:d56d on CX5130_ebus.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu avahi-daemon[623]: Withdrawing workstation service for CX5130_ebus.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu NetworkManager[964]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/CX5130_ebus, iface: CX5130_ebus)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu kernel: [ 12.603567] ec_ccat: registered ec_ccat as gpio chip with #12 GPIOs.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu kernel: [ 12.603770] EtherCAT: Accepting 00:01:05:1A:D5:6D as main device for master 0.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu kernel: [ 12.603794] EtherCAT 0: Starting EtherCAT-IDLE thread.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu kernel: [ 12.603846] (unregistered net_device): NIC Link is Up<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu kernel: [ 12.603870] EtherCAT 0: Link state of ecm0 changed to UP.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu kernel: [ 12.608008] ec_ccat: registered ccat_update0.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu kernel: [ 12.608031] ec_ccat: ccat_sram_probe: 0x0016 rev: 0x0000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:58 ubuntu kernel: [ 12.655994] EtherCAT WARNING 0: 1 datagram TIMED OUT!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:59 ubuntu NetworkManager[964]: <warn> error monitoring device for netlink events: error processing netlink message: Object busy<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:59 ubuntu avahi-daemon[623]: Joining mDNS multicast group on interface CX5130_x001.IPv6 with address fe80::201:5ff:fe1d:7dac.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:59 ubuntu avahi-daemon[623]: New relevant interface CX5130_x001.IPv6 for mDNS.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:59 ubuntu avahi-daemon[623]: Registering new address record for fe80::201:5ff:fe1d:7dac on CX5130_x001.*.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:25:59 ubuntu kernel: [ 13.706520] EtherCAT WARNING 0: 20 datagrams TIMED OUT!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:26:00 ubuntu kernel: [ 14.748575] EtherCAT WARNING 0: 20 datagrams TIMED OUT!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:26:01 ubuntu dbus[443]: [system] Activating service name='org.freedesktop.UPower' (using servicehelper)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:26:01 ubuntu dbus[443]: [system] Successfully activated service 'org.freedesktop.UPower'<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:26:01 ubuntu dhclient: DHCPDISCOVER on CX5130_x001 to 255.255.255.255 port 67 interval 5 (xid=0x730db6c3)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:26:02 ubuntu kernel: [ 15.790895] EtherCAT WARNING 0: 20 datagrams TIMED OUT!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:26:02 ubuntu kernel: [ 15.893849] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:26:02 ubuntu kernel: [ 15.946642] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:26:02 ubuntu kernel: [ 16.000730] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">At this time the ‘ethercat master’ command returns something like this:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Master0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Phase: Idle<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Active: no<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Slaves: 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Ethernet devices:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Main: 00:01:05:1a:d5:6d (attached)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Link: UP<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Tx frames: 63<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Tx bytes: 3780<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Rx frames: 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Rx bytes: 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Tx errors: 1294<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Tx frame rate [1/s]: 0 0 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Tx rate [KByte/s]: 0.0 0.0 0.1<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Rx frame rate [1/s]: 0 0 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Rx rate [KByte/s]: 0.0 0.0 0.0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Common:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Tx frames: 63<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Tx bytes: 3780<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Rx frames: 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Rx bytes: 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Lost frames: 63<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Tx frame rate [1/s]: 0 0 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Tx rate [KByte/s]: 0.0 0.0 0.1<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Rx frame rate [1/s]: 0 4 2405<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Rx rate [KByte/s]: 0.0 4.7 1455.5<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Loss rate [1/s]: 0 0 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Frame loss [%]: 0.0 100.0 100.0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Distributed clocks:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Reference clock: None<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> Application time: 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New""> 2000-01-01 00:00:00.000000000<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">On an unsuccessful unload/reload of ec_ccat:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:33 ubuntu kernel: [ 287.196371] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:33 ubuntu kernel: [ 287.249216] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:33 ubuntu kernel: [ 287.301650] EtherCAT 0: Master thread exited.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:33 ubuntu kernel: [ 287.301675] EtherCAT 0: Releasing main device 00:01:05:1A:D5:6D.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:40 ubuntu kernel: [ 293.382320] ec_ccat: registered ec_ccat as gpio chip with #12 GPIOs.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:40 ubuntu kernel: [ 293.382606] EtherCAT: Accepting 00:01:05:1A:D5:6D as main device for master 0.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:40 ubuntu kernel: [ 293.382624] EtherCAT 0: Starting EtherCAT-IDLE thread.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:40 ubuntu kernel: [ 293.382691] (unregistered net_device): NIC Link is Up<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:40 ubuntu kernel: [ 293.382715] EtherCAT 0: Link state of ecm0 changed to UP.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:40 ubuntu kernel: [ 293.384380] EtherCAT WARNING 0: 8 datagrams TIMED OUT!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:40 ubuntu kernel: [ 293.386028] ec_ccat: registered ccat_update0.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:40 ubuntu kernel: [ 293.386073] ec_ccat: ccat_sram_probe: 0x0016 rev: 0x0000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:41 ubuntu kernel: [ 294.431521] EtherCAT WARNING 0: 20 datagrams TIMED OUT!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:42 ubuntu kernel: [ 295.472201] EtherCAT WARNING 0: 20 datagrams TIMED OUT!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:43 ubuntu kernel: [ 296.511475] EtherCAT WARNING 0: 20 datagrams TIMED OUT!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:43 ubuntu kernel: [ 296.669281] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:43 ubuntu kernel: [ 296.721893] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:30:43 ubuntu kernel: [ 296.774468] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">On a successful unload and reload of ec_ccat:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:34 ubuntu kernel: [ 408.038227] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:34 ubuntu kernel: [ 408.090745] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:34 ubuntu kernel: [ 408.143279] (unregistered net_device): BUG! Tx Ring full when queue awake!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:34 ubuntu kernel: [ 408.188016] EtherCAT 0: Master thread exited.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:34 ubuntu kernel: [ 408.188049] EtherCAT 0: Releasing main device 00:01:05:1A:D5:6D.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.085382] ec_ccat: registered ec_ccat as gpio chip with #12 GPIOs.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.085704] EtherCAT: Accepting 00:01:05:1A:D5:6D as main device for master 0.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.085726] EtherCAT 0: Starting EtherCAT-IDLE thread.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.085788] (unregistered net_device): NIC Link is Up<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.085809] EtherCAT 0: Link state of ecm0 changed to UP.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.086907] ec_ccat: registered ccat_update0.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.086995] ec_ccat: ccat_sram_probe: 0x0016 rev: 0x0000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.090003] EtherCAT WARNING 0: 2 datagrams TIMED OUT!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.090014] EtherCAT WARNING 0: 1 datagram UNMATCHED!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.094116] EtherCAT 0: 14 slave(s) responding on main device.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.094128] EtherCAT 0: Slave states on main device: PREOP.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:37 ubuntu kernel: [ 411.094226] EtherCAT 0: Scanning bus.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.698595] EtherCAT 0: Bus scanning completed in 1604 ms.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.698606] EtherCAT 0: Using slave 0 as DC reference clock.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.700210] EtherCAT: Requesting master 0...<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.700226] EtherCAT: Successfully requested master 0.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.709429] EtherCAT 0: Domain0: Logical address 0x00000000, 114 byte, expected working counter 32.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.709440] EtherCAT 0: Datagram domain0-0-main: Logical offset 0x00000000, 114 byte, type LRW.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.709833] EtherCAT 0: Master thread exited.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.709858] EtherCAT 0: Starting EtherCAT-OP thread.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.710010] EtherCAT WARNING 0: 1 datagram TIMED OUT!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.742278] EtherCAT WARNING 0: No app_time received up to now, but master already active.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.784239] EtherCAT 0: Domain 0: Working counter changed to 1/32.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.895474] EtherCAT WARNING 0-2: Slave does not support changing the PDO mapping!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 412.895484] EtherCAT WARNING 0-2: Currently mapped PDO entries: 0x7010:01/1 0x7010:02/1 0x7010:03/1 0x7010:04/1 0x0000:00/4
0x0000:00/8 0x7010:11/32. Entries to map: 0x7010:01/1 0x7010:02/1 0x7010:03/1 0x7010:04/1 0x0000:00/12 0x7010:11/32<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 413.102650] EtherCAT WARNING 0-3: Slave does not support changing the PDO mapping!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:39 ubuntu kernel: [ 413.102660] EtherCAT WARNING 0-3: Currently mapped PDO entries: 0x6000:01/1 0x6000:02/1 0x6000:03/2 0x6000:05/2 0x6000:07/1
0x0000:00/1 0x0000:00/6 0x1800:07/1 0x1800:09/1 0x6000:11/16. Entries to map: 0x6000:01/1 0x6000:02/1 0x6000:03/2 0x6000:05/2 0x6000:07/1 0x0000:01/1 0x0000:02/6 0x1800:07/1 0x1800:09/1 0x6000:11/16<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:40 ubuntu kernel: [ 413.714330] EtherCAT WARNING 0: 6 datagrams UNMATCHED!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:40 ubuntu kernel: [ 413.715135] EtherCAT WARNING: Datagram ffff880096230d98 (domain0-0-main) was SKIPPED 6 times.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:40 ubuntu kernel: [ 413.787102] EtherCAT 0: Domain 0: 7 working counter changes - now 13/32.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:40 ubuntu kernel: [ 414.508889] EtherCAT 0: Slave states on main device: OP.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-family:"Courier New"">Oct 22 23:32:41 ubuntu kernel: [ 414.792978] EtherCAT 0: Domain 0: 5 working counter changes - now 21/32.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am aware of the PDO mapping warnings displayed (this system happened to have a new type of slice), but the stalls were occurring well before I added that device’s support, plus the stalls are before any comms with the
slaves anyway.<o:p></o:p></span></p>
</div>
</div>
<br>
<span style="FONT-FAMILY: Arial, Helvetica, sans-serif; FONT-SIZE: 8pt">Beckhoff Automation GmbH & Co. KG | Managing Director: Dipl. Phys. Hans Beckhoff<br>
Registered office: Verl, Germany | Register court: Guetersloh HRA 7075</span> <br>
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