In UFSHCI 4.1 the MCQ completion queue entry carries the request tag in
the cqe.task_tag field (DW5), whereas 4.0 hosts derive it from the UTP
command descriptor base address. The device reports version 4.1 in the VER
register but left task_tag/lun zero in the completion path, so a
4.1-compliant host reads tag 0 for every completion and cannot match it to
the outstanding request.
Add the task_tag/lun/iid fields to UfsCqEntry per the UFSHCI 4.1 CQE
layout and populate them from the request UPIU header.
For example, the Linux ufshcd_mcq_get_tag() uses cqe.task_tag for
version >= 4.1, so without this SCSI commands hung (e.g. INQUIRY to the
device W-LUN) while device-management commands still completed.
Signed-off-by: Jeuk Kim <jeuk20.kim@samsung.com>
20c03709b3