isci: Terminate dev requests on FIS err bit rx in NCQ

When the remote device transitions to a not-ready state because of
an NCQ error condition, all outstanding requests to that device
are terminated and completed to libsas on the normal path.  The
device then waits for a READ LOG EXT command to issue on the task
management path.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h
index 7c8b59a7c02c..9130f22a63b8 100644
--- a/drivers/scsi/isci/request.h
+++ b/drivers/scsi/isci/request.h
@@ -687,4 +687,13 @@ scic_task_request_construct_sata(struct scic_sds_request *sci_req);
 void
 scic_stp_io_request_set_ncq_tag(struct scic_sds_request *sci_req, u16 ncq_tag);
 void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req);
+
+static inline int isci_task_is_ncq_recovery(struct sas_task *task)
+{
+        return (sas_protocol_ata(task->task_proto) &&
+                task->ata_task.fis.command == ATA_CMD_READ_LOG_EXT &&
+                task->ata_task.fis.lbal == ATA_LOG_SATA_NCQ);
+
+}
+
 #endif /* !defined(_ISCI_REQUEST_H_) */