[nvmewin] LBA Range Type Patch

Alex Chang Alex.Chang at pmcs.com
Wed Jan 29 15:37:16 PST 2014


The changes of the patch need to be based on the latest code base.

Thanks,
Alex

From: Freyensee, James P [mailto:james.p.freyensee at intel.com]
Sent: Wednesday, January 29, 2014 3:35 PM
To: Alex Chang; Foster, Carolyn D; nvmewin at lists.openfabrics.org
Subject: RE: LBA Range Type Patch

May I ask a novice question?

It just occurred to me I was comparing the changes on this patch to the IDT_NVMe_1_0_e_compliance branch, which is what I am working with and care about.

Do you want this patch compared with the latest code?  Or is comparison with IDT_NVMe_1_0_ecompliance sufficient?

Thanks!

From: nvmewin-bounces at lists.openfabrics.org<mailto:nvmewin-bounces at lists.openfabrics.org> [mailto:nvmewin-bounces at lists.openfabrics.org] On Behalf Of Alex Chang
Sent: Wednesday, January 29, 2014 2:49 PM
To: Foster, Carolyn D; nvmewin at lists.openfabrics.org<mailto:nvmewin at lists.openfabrics.org>
Subject: Re: [nvmewin] LBA Range Type Patch

Thank you very much, Carolyn.

Hi all,

Please review/test the patch and provide your feedback(s) as soon as possible.

Thanks,
Alex

From: nvmewin-bounces at lists.openfabrics.org<mailto:nvmewin-bounces at lists.openfabrics.org> [mailto:nvmewin-bounces at lists.openfabrics.org] On Behalf Of Foster, Carolyn D
Sent: Wednesday, January 29, 2014 2:45 PM
To: nvmewin at lists.openfabrics.org<mailto:nvmewin at lists.openfabrics.org>
Subject: [nvmewin] ***UNCHECKED*** LBA Range Type Patch


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Overview:
The LBA Range Type feature is defined as optional in the spec, but the driver currently fails to complete enumeration if the Get Features request for LBA Range Type fails.  Based on the serious nature of the failure, this could be a problem at the upcoming plugfest.  There will likely be devices at plugfest that do not support LBA Range Type, thus causing the OFA driver to not load on these devices.

Files Modified:
In nvmeInit.c, NVMeSetFeaturesCompletion(), the LBA Range Type Get Features request is treated as mandatory and will cause enumeration to fail if the Get Features command is not successful.  This change looks at the status codes and will allow enumeration to continue if the device returns Invalid.

Password: intel123
Feedback requested by Feb. 5th.

Unit Tests:
Cold boot
Reboot
Reset while running in the OS
SdStress
SCSI Compliance Test (I did see what I believe are known failures in Read Capacity, Mode Select, and Write (10))
Driver Update using INF

Carolyn Dase Foster
Intel Corp.
NVM Solutions Group
Internal SSD Engineering
Phone: 480-554-2421

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