3706b31b49
During ISSU, "mlxsw_minimal" driver still trying to access firmware, in some cases FW could return some wrong critical threshold value which will cause switch shutdown. **- How I did it** In order to prevent "mlxsw_minimal" driver from accessing ASIC during ISSU, SDK will raise "OFFLINE" 'udev' event at the early beginning of such flow. When this event is received, hw-management will remove "mlxsw_minimal" driver. There is no need to implement the opposite "ONLINE" event since this flow is ended up with "kexec". **- How to verify it** repeatedly perform warm reboot, make sure there is no switch shutdown occurred.
31 lines
1.5 KiB
Diff
31 lines
1.5 KiB
Diff
From 3e511778248403968e0a02857b7003f352669ba3 Mon Sep 17 00:00:00 2001
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From: Vadim Pasternak <vadimp@nvidia.com>
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Date: Wed, 13 Jan 2021 13:19:17 +0200
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Subject: [PATCH] hw-mgmt: events: Add support for SDK OFFLINE event for
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handling flow with in service firmware upgrade
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In order to prevent "mlxsw_minimal" driver access to ASIC during in
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service firmware upgrade flow, SDK will raise "OFFLINE" 'udev' event
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at early beginning of such flow. When this event is received,
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hw-managemnet will remove "mlxsw_minimal" driver.
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There is no need to implement opposite "ONLINE" event, since this flow
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is ended up with "kexec".
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Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
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---
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usr/lib/udev/rules.d/50-hw-management-events.rules | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/usr/lib/udev/rules.d/50-hw-management-events.rules b/usr/lib/udev/rules.d/50-hw-management-events.rules
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index cf4219e..33ea1bc 100644
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--- a/usr/lib/udev/rules.d/50-hw-management-events.rules
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+++ b/usr/lib/udev/rules.d/50-hw-management-events.rules
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@@ -269,3 +269,4 @@ SUBSYSTEM=="i2c", DEVPATH=="/devices/platform/mlxplat/i2c_mlxcpld*/i2c-*/i2c-*/*
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# SDK
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SUBSYSTEM=="pci", DRIVERS=="sx_core", ACTION=="add", RUN+="/usr/bin/hw-management-thermal-events.sh add sxcore add"
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SUBSYSTEM=="pci", DRIVERS=="sx_core", ACTION=="remove", RUN+="/usr/bin/hw-management-thermal-events.sh rm sxcore remove"
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+SUBSYSTEM=="pci", DRIVERS=="sx_core", ACTION=="offline", RUN+="/usr/bin/hw-management-thermal-events.sh rm sxcore remove"
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--
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1.9.1
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