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@broadcom.com>
Cc: sathya.prakash@broadcom.com
---
  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@suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare@suse.de                              +49 911 74053 688
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