VERY LATE ISSUE FOR SAS 1.1

Bill Martin bill_martin at sierralogic.com
Thu Sep 15 23:55:55 PDT 2005


* From the T10 Reflector (t10 at t10.org), posted by:
* "Bill Martin" <bill_martin at sierralogic.com>
*
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Rob & George:

 

I hope that I am mistaken; however, I think that there may be an error
in the latest revision of SAS 1.1.  Page 455 just below table 197, there
is the following statement:

 

If a SAS phy reset sequence occurs (see 6.7.4)(i.e., one or more of the
ATTACHED SSP INITIATOR PORT bit, ATTACHED STP INITIATOR PORT bit,
ATTACHED SMP INITIATOR PORT bit, ATTACHED SSP TARGET PORT bit, ATTACHED
STP TARGET PORT bit, and/or ATTACHED SMP TARGET PORT bit is set to
zero), then the ATTACHED SATA PORT SELECTOR bit, the ATTACHED SATA
DEVICE bit, and the ATTACHED SATA HOST bit shall each be set to one.

 

I believe that this should set the last three referenced bits to ZERO
not one.  I compare this to the following statement from the third
paragraph on page 456 which discusses what is done when a SATA phy reset
sequence occurs and the bits associated with any type of SCSI port
(e.g., ATTACHED SSP INITIATOR PORT) are set to zero:

 

If a SATA phy reset sequence occurs (see 6.7.3)(i.e., the ATTACHED SATA
PORT SELECTOR bit is set to one, the ATTACHED SATA DEVICE bit is set to
one, or the ATTACHED SATA HOST bit is set to one), then the ATTACHED SSP
INITIATOR PORT bit, ATTACHED STP INITIATOR PORT bit, ATTACHED SMP
INITIATOR PORT bit, ATTACHED SSP TARGET PORT bit, ATTACHED STP TARGET
PORT bit, and ATTACHED SMP TARGET PORT bit shall each be set to zero.

 

 

Bill Martin
Sr. Principal Engineer
Standards and Interoperability
Sierra Logic, Inc.
916 772-3658

916 765-6875 (Cell)
bill_martin at sierralogic.com

 


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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Rob &amp; George:<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I hope that I am mistaken; however, I think that =
there may
be an error in the latest revision of SAS 1.1.&nbsp; Page 455 just =
below table 197,
there is the following statement:<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal style=3D'text-autospace:none'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>If a SAS phy reset =
sequence occurs
(see 6.7.4)(i.e., one or more of the </span></font><font size=3D1 =
face=3DArial><span
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED SSP INITIATOR PORT =
</span></font><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>bit, </span></font><font
size=3D1 face=3DArial><span =
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED STP
INITIATOR PORT </span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial'>bit, </span></font><font size=3D1 =
face=3DArial><span
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED SMP INITIATOR PORT =
</span></font><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>bit, </span></font><font
size=3D1 face=3DArial><span =
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED SSP
TARGET PORT </span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>bit, </span></font><font size=3D1 face=3DArial><span
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED STP TARGET PORT =
</span></font><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>bit, and/or =
</span></font><font
size=3D1 face=3DArial><span =
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED SMP
TARGET PORT </span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>bit is set to zero), then the </span></font><font =
size=3D1
face=3DArial><span style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED =
SATA PORT SELECTOR
</span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:
Arial'>bit, the </span></font><font size=3D1 face=3DArial><span =
style=3D'font-size:
8.0pt;font-family:Arial'>ATTACHED SATA DEVICE </span></font><font =
size=3D2
face=3DArial><span style=3D'font-size:10.0pt;font-family:Arial'>bit, =
and the </span></font><font
size=3D1 face=3DArial><span =
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED SATA
HOST </span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>bit shall each be set to =
one.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I believe that this should set the last three =
referenced
bits to ZERO not one.&nbsp; I compare this to the following statement =
|from the third
paragraph on page 456 which discusses what is done when a SATA phy =
reset
sequence occurs and the bits associated with any type of SCSI port =
(e.g.,
ATTACHED SSP INITIATOR PORT) are set to =
zero:<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal style=3D'text-autospace:none'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>If a SATA phy reset =
sequence occurs
(see 6.7.3)(i.e., the </span></font><font size=3D1 face=3DArial><span
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED SATA PORT SELECTOR =
</span></font><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>bit is set
to one, the </span></font><font size=3D1 face=3DArial><span =
style=3D'font-size:8.0pt;
font-family:Arial'>ATTACHED SATA DEVICE </span></font><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>bit is set to one, or the =
</span></font><font
size=3D1 face=3DArial><span =
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED SATA
HOST </span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>bit is set to one), then the </span></font><font =
size=3D1
face=3DArial><span style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED =
SSP INITIATOR
PORT </span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>bit, </span></font><font size=3D1 face=3DArial><span
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED STP INITIATOR PORT =
</span></font><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>bit, </span></font><font
size=3D1 face=3DArial><span =
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED SMP
INITIATOR PORT </span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial'>bit, </span></font><font size=3D1 =
face=3DArial><span
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED SSP TARGET PORT =
</span></font><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>bit, </span></font><font
size=3D1 face=3DArial><span =
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED STP
TARGET PORT </span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>bit, and </span></font><font size=3D1 =
face=3DArial><span
style=3D'font-size:8.0pt;font-family:Arial'>ATTACHED SMP TARGET PORT =
</span></font><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>bit shall
each be set to zero.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><st1:PersonName w:st=3D"on"><font size=3D2 =
face=3DArial><span
 style=3D'font-size:10.0pt;font-family:Arial'>Bill =
Martin</span></font></st1:PersonName><br>
<font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>Sr.
Principal Engineer<br>
Standards and Interoperability<br>
Sierra Logic, Inc.<br>
916 772-3658</span></font><o:p></o:p></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>916 765-6875 (Cell)<br>
bill_martin at sierralogic.com</span></font><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></=
p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

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