IBM Power RAID driver - third version

I have uploaded the third version of the ipr device driver to:

http://www-124.ibm.com/storageio/ipr/patch-2.6.3-ipr-2.0.0-6.gz

Major changes:

1. Removed use of bit fields.
2. Removed show_queue_depth since we can use default one.
3. Added FIXME comments to issues still outstanding that require midlayer changes
4. Several bug fixes.

Outstanding issues:

1. Driver needs the start_unit patch I submitted in order to function properly. This has still not been accepted. A 2.6.3 patch can be found at: http://www-124.ibm.com/storageio/ipr/patch-2.6.3-start_unit.gz
2. Driver needs the array_controller patch, which still has not been accepted. http://www-124.ibm.com/storageio/ipr/patch-2.6.3-array_controller.gz
3. Still checking allow_cmds flag in queuecommand. ERP ops (e.g. TUR), still do not check host_blocked. Patch to force retries to obey host_blocked flag has been accepted, will be submitting another patch to fix ERP ops. Once this is accepted, I will remove the check.
4. ioa_is_dead flag still exists and is checked in queuecommand. Need to add a scsi_set_host_offline interface to change this.
5. res->del_from_ml flag still exists. To remove it requires a scsi_set_device_offline interface.
6. Driver is still modifying the command timeout. Once an acceptable alternative is agreed upon, this can be cleaned up.

Please apply. I will continue working the outstanding issues and update the ipr driver along with the rest of the patch.

Brian King
eServer Storage I/O
IBM Linux Technology Center

There was a bug in this version causing system hangs on certain machines as I was doing memory space accesses with memory space disabled, please use
http://www-124.ibm.com/storageio/ipr/patch-2.6.3-ipr-2.0.0-7.gz
instead.

Also, you will need:
http://www-124.ibm.com/storageio/ipr/patch-2.6.3-ipr-pci-ids
as well.

Thanks

-Brian

Brian King
eServer Storage I/O
IBM Linux Technology Center