i5100_edac: connect fault injection to debugfs node
Create a debugfs direcotry i5100_edac/mcX for each memory controller and add nodes to control how fault injection is preformed. After configuring an injection using inject_channel, inject_deviceptr1, inject_deviceptr2, inject_eccmask1, inject_eccmask2 and inject_hlinesel trigger the injection by writing anything to inject_enable. Example of a CE injection: echo 0 > /sys/kernel/debug/i5100_edac/mc0/inject_channel echo 1 > /sys/kernel/debug/i5100_edac/mc0/inject_hlinesel echo 61440 > /sys/kernel/debug/i5100_edac/mc0/inject_eccmask1 echo 1 > /sys/kernel/debug/i5100_edac/mc0/inject_enable Example of UE injection: echo 0 > /sys/kernel/debug/i5100_edac/mc0/inject_channel echo 2 > /sys/kernel/debug/i5100_edac/mc0/inject_hlinesel echo 65535 > /sys/kernel/debug/i5100_edac/mc0/inject_eccmask1 echo 65535 > /sys/kernel/debug/i5100_edac/mc0/inject_eccmask2 echo 17 > /sys/kernel/debug/i5100_edac/mc0/inject_deviceptr1 echo 0 > /sys/kernel/debug/i5100_edac/mc0/inject_deviceptr2 echo 1 > /sys/kernel/debug/i5100_edac/mc0/inject_enable Sometimes it is needed to enable the injection more then once (echo to the inject_enable node) for the injection to happen, I am not sure why. Signed-off-by: Niklas Söderlund <niklas.soderlund@ericsson.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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