tree 3d0ac366068cfa5c2925645634bde1a6b87538b3
parent ee0f05b863df0a623792eaa46703019c100be2de
author brking@us.ibm.com <brking@us.ibm.com> 1130886142 -0600
committer James Bottomley <jejb@mulgrave.(none)> 1131304187 -0600

[SCSI] ipr: Support new device queueing model

New ipr adapters support a new device queueing model in the
adapter firmware. The queueing model is the NACA queueing model,
but it does not mean use of NACA is required. The new model removes
some of the adapter firmware queue state that made handling QERR=0
almost impossible. The queueing model on older adapters included the
concept of a queue frozen state, which would freeze the response
queue in the adapter when a check condition occurred, requiring a
a primitive to resume the queue. The new queueing model removes this
complexity.

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>