On 12/22/20 11:11 AM, Kashyap Desai wrote:
Added h/w defined process of doing controller reset. The driver on detection of firmware fault or any kind of unresponsiveness in the controller (Any admin command time outs) results in resetting the controller. The primary reset mechanisms used are either soft reset or diag fault reset. Reset is performed if the host sets the ResetAction field in the HostDiagnostic register to a 001b (Soft Reset) or 007b(diag fault reset). The driver after successfully resetting the controller reinitialize the controller by going through start of the day controller initialization procedures. The pending I/Os during the reset are returned back to SML for retry. Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx> Cc: sathya.prakash@xxxxxxxxxxxx --- drivers/scsi/mpi3mr/mpi3mr.h | 22 +- drivers/scsi/mpi3mr/mpi3mr_fw.c | 416 +++++++++++++++++++++++++++++--- drivers/scsi/mpi3mr/mpi3mr_os.c | 93 ++++++- 3 files changed, 488 insertions(+), 43 deletions(-)
Reviewed-by: Hannes Reinecke <hare@xxxxxxx> Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@xxxxxxx +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer
