** Description changed: SRU Justification: [Impact] - During the QA reboot test, the BF3 Vitesse PHY gets stuck in a bad - state, resulting in no ip provisioning. The only way to recover is to - toggle the PHY hard reset pin via GPIO17 (or powercycle cycle since it - achieves just that). We might have found a software workaround to avoid - getting in this state in the first place: suspend the PHY during - graceful shutdown. Suspend the PHY = Power down = set bit 11 to 1 in reg - 0 of the PHY. This WA passed 1800 reboots on QA's setup. + During the QA reboot test, the BF3 Vitesse PHY gets stuck in a bad state, resulting in no ip provisioning. The only way to recover is to powercycle. + We might have found a software workaround to avoid getting in this state in the first place: suspend the PHY during graceful shutdown. Suspend the PHY = Power down = set bit 11 to 1 in reg 0 of the PHY. This WA passed 1800 reboots on QA's setup. [Fix] * During reboot, the mlxbf_gige_shutdown() function makes a call to phy_stop(). phy_stop() calls phy_suspend(). * Certain Linux PHY drivers, like the Vitesse PHY, don't support suspend() to power down the PHY during shutdown. - * Our Hardware also does not toggle the hard reset signal of the PHY during reboot. + * Our Hardware also does not toggle the hard reset signal of the PHY during reboot. * Hence, when the PHY is in a bad state, it stays in its bad state until powercycle. * We have found a way to prevent the PHY from entering this bad state by suspending the PHY in the case of reboot. - [Test Case] - * do the reboot test (at least 2000 reboots): run 'reboot' from linux. + * do the reboot test (at least 2000 reboots): run 'reboot' from linux. * Check that the oob_net0 interface is up and the ip is assigned. - * please note that if the the OOB doesn't get an ip, try reloading the driver (rmmod/modprobe). it that solves the issue, that would be a different bug. In the bug at stake, nothing recovers the OOB ip except power cycle. + * please note that if the the OOB doesn't get an ip, try reloading the driver (rmmod/modprobe). it that solves the issue, that would be a different bug. In the bug at stake, nothing recovers the OOB ip except power cycle. [Regression Potential] * Make sure the redfish DHCP is still working during the reboot test - * Make sure the OOB gets an ip + * Make sure the OOB gets an ip [Other] These changes were made both in the mlxbf-gige driver and UEFI
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-bluefield in Ubuntu. https://bugs.launchpad.net/bugs/2064163 Title: mlxbf-gige: Vitesse PHY stuck in a bad state during reboot test Status in linux-bluefield package in Ubuntu: New Bug description: SRU Justification: [Impact] During the QA reboot test, the BF3 Vitesse PHY gets stuck in a bad state, resulting in no ip provisioning. The only way to recover is to powercycle. We might have found a software workaround to avoid getting in this state in the first place: suspend the PHY during graceful shutdown. Suspend the PHY = Power down = set bit 11 to 1 in reg 0 of the PHY. This WA passed 1800 reboots on QA's setup. [Fix] * During reboot, the mlxbf_gige_shutdown() function makes a call to phy_stop(). phy_stop() calls phy_suspend(). * Certain Linux PHY drivers, like the Vitesse PHY, don't support suspend() to power down the PHY during shutdown. * Our Hardware also does not toggle the hard reset signal of the PHY during reboot. * Hence, when the PHY is in a bad state, it stays in its bad state until powercycle. * We have found a way to prevent the PHY from entering this bad state by suspending the PHY in the case of reboot. [Test Case] * do the reboot test (at least 2000 reboots): run 'reboot' from linux. * Check that the oob_net0 interface is up and the ip is assigned. * please note that if the the OOB doesn't get an ip, try reloading the driver (rmmod/modprobe). it that solves the issue, that would be a different bug. In the bug at stake, nothing recovers the OOB ip except power cycle. [Regression Potential] * Make sure the redfish DHCP is still working during the reboot test * Make sure the OOB gets an ip [Other] These changes were made both in the mlxbf-gige driver and UEFI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-bluefield/+bug/2064163/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
