about the SMP functions behavior on SAS-1.1

[Shinji Ugawa]

* From the T10 Reflector (t10 at t10.org), posted by:
* Shinji Ugawa <ugawa-sxa at necst.nec.co.jp>
*
Hi all,

  I send a corrected e-mail again because it had a typo.

  I would like to make sure the SMP functions behavior on SAS-1.1.

//////////
/// Question-1.
//
  When should the expander initialize or forget the following parameters those
  are set by the SMP PHY CONTROL function?
    - PROGRAMMED MINIMUM PHYSICAL LINK RATE
    - PROGRAMMED MAXIMUM PHYSICAL LINK RATE
    - PARTIAL PATHWAY TIMEOUT VALUE

 --- Initialize events --------------+--- e.g. PROG. MIN. PHYS. LINK RATE ---
                      Power on reset |  initialize
  HARD_RESET primitive received msg. |  iitialize, forget the previous value(???)
        PHY OPERATION = 'LINK RESET' |  still keep the value
        PHY OPERATION = 'HARD RESET' |  initialize, forget the previous value(???)
        PHY OPERATION = 'DISABLE'    |  still keep the values
 ------------------------------------+---------------------------------------


//////////
/// comments on the SMP state machine descriptions.
//
A figure is drawn based on SAS-1.1 r03 for the SMP target port.
So, this figure has a few arrows without a destination (requests and 
confirmation). My comments are as the followings.

1. SMP_TP2: Frame Transmitted confirmation
   The Frame Transmitted confirmation send from SMP_TP2 is in the Figure 106. 
   But I could not find a description for this confirmation in 7.18.4.4.3.

2. PL_PM3: SMP Transmit Break request
   The SMP Transmit Break request send from PL_PM3 is in the Figure 110. 
   But I could not find a description for this request in 8.2.3.4.1.

3. in SAS-1.1 r03 page 257, in SAS-1.1 r04 page 259.
   8.2.2.3.5 PL_OC2:Overall_Control state connection management
   If this state receives an Accept_Reject Opens request, then this state 
   shall send an Accept_Reject Opens message to all phys in the port.
   ---
   I guess that the "Accept_Reject Opens message to all phys" is misprint for 
   the "Accept_Reject Opens request to all link layers". 
   I referred to a table J.11 in an annex J.

4. in SAS-1.1 r03 page 259, in SAS-1.1 r04 page 261.
   If this state is in an SMP target port, then this state shall send the 
   Tx Frame message containing the SMP REQUEST frame to the PL_PM state 
   machine on which the connection was established for the Tx Open message.
   ---
   I thought that the "SMP REQUEST frame" should change to the "SMP RESPONSE".


Regards
-----
Shinji Ugawa
NEC System Technologies, Ltd.
*
* For T10 Reflector information, send a message with
* 'info t10' (no quotes) in the message body to majordomo at t10.org