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--- en:users:drivers:ath10k:debug [2016/02/19 09:41]
Kalle Valo Add new debug levels
+++ en:users:drivers:ath10k:debug [2017/03/29 14:32] (current)
Kalle Valo [Firmware crash dump file] useless use of cat and add a log message
@@ Line 210: / Line 210: @@
 `assert` - this will send special illegal parameter to firmware to cause assert failure and crash.
 `hw-restart` - this will simply queue hw restart without fw/hw actually crashing.</code>
+==== Firmware crash dump file ====
+When the firmware crashes ath10k collects various information which helps to debug the crash and creates a crash dump file. This is available via dev_coredump facility from /sys/class/devcoredump.
+To automatically collect devcoredump files add script /usr/local/sbin/devcoredump-collect.sh:
+<code>
+#!/bin/sh
+timestamp=$(date +%Y%m%d%H%M%S)
+filename="/var/spool/devcoredump/devcoredump-${timestamp}.dump"
+cp /sys/${DEVPATH}/data ${filename}
+echo 1 > /sys/${DEVPATH}/data
+logger "created ${filename}"</code>
+Create a directory for the dump files:
+<code>
+sudo mkdir /var/spool/devcoredump</code>
+And add a udev rules script /etc/udev/rules.d/50-devcoredump.rules:
+<code>
+SUBSYSTEM=="devcoredump", ACTION=="add", RUN+="/usr/local/sbin/devcoredump-collect.sh"</code>

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