From my reading of the standard, I do not believe the SP machine needs to remember that receiving a COMINIT is what brought it to SP0.  Nor does it need to receive a COMINIT in SP0:OOB_COMINIT.  Sending a COMINIT in SP0 and then both sending and receiving COMSAS (in other states) is sufficient to bring the bus to the start of SNW1.

Martin Schulze

Western Digital

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From: owner-t10@t10.org [mailto:owner-t10@t10.org] On Behalf Of Bill.Martin@Emulex.Com
Sent: Thursday, November 20, 2008 3:18 PM
To: t10@t10.org
Cc: Shiro.Suzuki@Emulex.Com
Subject: FW: SAS transition from SP12 to SP0

I have not seen a response on this, does anyone have any input on the original intent on this transition?

Thanks,

Bill Martin

Emulex
Office of Technology
Industry Standards
916 772-3658
916 765-6875 (Cell)
bill.martin@emulex.com

From: owner-t10@t10.org [mailto:owner-t10@t10.org] On Behalf Of Bill.Martin@emulex.com
Sent: Monday, November 17, 2008 1:11 PM
To: t10@t10.org; Elliott@hp.com
Subject: SAS transition from SP12 to SP0

When a SAS device is in the SP12::SAS_AwaitSNW, receives a COMINIT, and transitions to the SP0:OOB_COMINIT, shall the device remember that it has detected COMINIT or shall it wait for another COMINIT to be received?  There is no mention of carrying a state variable forward to the SP0 state.

Thanks for any and all opinions.

Bill Martin

Emulex
Office of Technology
Industry Standards
916 772-3658
916 765-6875 (Cell)
bill.martin@emulex.com