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Shannon Nelson authored
Add in the periodic health check and the related workqueue, as well as the handlers for when a FW reset is seen. The firmware is polled every 5 seconds to be sure that it is still alive and that the FW generation didn't change. The alive check looks to see that the PCI bus is still readable and the fw_status still has the RUNNING bit on. If not alive, the driver stops activity and tears things down. When the FW recovers and the alive check again succeeds, the driver sets back up for activity. The generation check looks at the fw_generation to see if it has changed, which can happen if the FW crashed and recovered or was updated in between health checks. If changed, the driver counts that as though the alive test failed and forces the fw_down/fw_up cycle. Signed-off-by:
Shannon Nelson <shannon.nelson@amd.com> Acked-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
c2dbb090