IDCDS Back to Index page
 
Prolog 
Control Block Contents 
   IDCDS DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.

 
  IDCDS Control Block Content Top of page
  




 IDCDS DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      IDCDS          NVMe Identify Controller Data Structure
0000    0 Bitstring    2 IDCVID         PCI Vendor ID
0002    2 Bitstring    2 IDCSSVID       PCI Subsystem Vendor ID
0004    4 Character   20 IDCSN          Serial Number
0018   24 Character   40 IDCMN          Model Number
0040   64 Character    8 IDCFR          Firmware Revision
0048   72 Address      1 IDCRAB         Recommended Arbitration Burst
0049   73 Bitstring    3 IDCIEEE        IEEE OUI Identifier
004C   76 Address      1 IDCCMIC        Controller Multi-Path I/O/Sharing
                                        Capab.
004D   77 Address      1 IDCMDTS        Maximum Data Transfer Size
004E   78 Address      2 IDCCNTLI       Controller ID
0050   80 Bitstring    4 IDCVER         Version
0054   84 Address      4 IDCRTD3R       RTD3 Resume Latency
0058   88 Address      4 IDCRTD3E       RTD3 Entry Latency
005C   92 Bitstring    4 IDCOAES        Optional Asynchronous Events
                                        Supported
0060   96 Bitstring    4 IDCCTRAT       Controller Attributes
0064  100 Bitstring   12 *              Reserved
0070  112 Bitstring   16 IDCFGUID       FRU Globally Unique Identifier
0080  128 Bitstring  112 *              Reserved
00F0  240 Bitstring   16 *
0100  256 Bitstring    2 IDCOACS        Optional Admin Command Support
0102  258 Address      1 IDCACL         Abort Command Limit
0103  259 Address      1 IDCAERL        Asynchronous Event Request Limit
0104  260 Bitstring    1 IDCFRMW        Firmware Updates
          .... 111.      IDCFWSLT       B'00001110' IDCFWSLT Slot count
          .... ...1      IDCFWSLS       1 IDCFWSLS Slot count shift
                                        factor
0105  261 Bitstring    1 IDCLPA         Log Page Attributes
          .... .1..      IDCLPAEX       X'04' IDCLPAEX Extended Get Log
                                        Page support
0106  262 Address      1 IDCELPE        Error Log Page Entries
0107  263 Address      1 IDCNPSS        Number of Power States Supported
0108  264 Bitstring    1 IDCAVSCC       Admin Vendor Specific Command
                                        Config
0109  265 Bitstring    1 IDCAPSTA       Autonomous Power State Transition
                                        Attrib.
010A  266 Address      2 IDCWCTMP       Warning Composite Temperature
                                        Threshold
010C  268 Address      2 IDCCCTMP       Critical Composite Temperature
                                        Threshold
010E  270 Address      2 IDCMTFA        Mean Time for Firmware Activation
0110  272 Address      4 IDCHMPRE       Host Memory Buffer Preferred Size
0114  276 Address      4 IDCHMMIN       Host Memoroy Buffer Minimum Size
0118  280 Bitstring   16 IDCTNCAP       Total NVM Capacity
0128  296 Bitstring   16 IDCUNCAP       Unallocated NVM Capacity
0138  312 Bitstring  200 *
0200  512 Address      1 IDCSQES        Submission Queue Entry Size
0201  513 Address      1 IDCCQES        Completion Queue Entry Size
0202  514 Address      2 IDCMXCMD       Maxmimum Outstanding Commands
0204  516 Address      4 IDCNN          Number of Namespaces
0208  520 Bitstring    2 IDCONCS        Optional NVM Command Support
                                        B'r-------rrrrrrrr' Reserved
          00000040       IDCTS          B'01000000' Timestamp
          00000020       IDCRES         B'00100000' Reservations
          00000010       IDCSS          B'00010000' Save (Set
                                        Feat.)/Select (Get Feat.)
          00000008       IDCWRZER       B'00001000' Write Zeroes
          00000004       IDCDSMGT       B'00000100' Dataset Management
          00000002       IDCWRUNC       B'00000010' Write Uncorrectable
          00000001       IDCCOMP        B'00000001' Compare
020A  522 Bitstring    2 IDCFUSES       Fused Operation Support
020C  524 Bitstring    1 IDCFNA         Format NVM Attributes
020D  525 Bitstring    1 IDCVWC         Volatile Write Cache
020E  526 Address      2 IDCAWUN        Atomic Write Unit Normal
0210  528 Address      2 IDCAWUPF       Atomic Write Unit Power Fail
0212  530 Bitstring    1 IDCNVSCC       NVM Vendor Specific Command
                                        Configuration
0213  531 Bitstring    1 *              Reserved
0214  532 Address      2 IDCACW         Atomic Compare and Write Unit
0216  534 Bitstring    2 *              Reserved
0218  536 Bitstring    4 IDCSGLS        SGL Support
021C  540 Character  228 *              Reserved
0300  768 Bitstring  256 *              NVM Subsystem NVMe Qualified Name
0400 1024 Bitstring  768 *              Reserved
0700 1792 Bitstring  256 *              Reserved for NVMe Over Fabrics
0800 2048 Bitstring   32 * (32)         Power State Descriptors
0C00 3072 Bitstring 1024 *              Vendor Specific
 
 
  IDCDS Storage Layout Top of page
  
          
*** IDCDS - NVMe Identify Controller Data Structure
*
*     +-------------+-------------+---------------------------+
*   0 |   IDCVID    |  IDCSSVID   |                           |
*     +-------------+-------------+                           |
*     |                        IDCSN                          |
*     |                                                       |
*     +-------------------------------------------------------+
*  18 |                                                       |
*     =                        IDCMN                          =
*     |                                                       |
*     +-------------------------------------------------------+
*  40 |                        IDCFR                          |
*     +------+--------------------+------+------+-------------+
*  48 |IDCRAB|      IDCIEEE       |:CMIC |:MDTS |  IDCCNTLI   |
*     +------+--------------------+------+------+-------------+
*  50 |          IDCVER           |         IDCRTD3R          |
*     +---------------------------+---------------------------+
*  58 |         IDCRTD3E          |         IDCOAES           |
*     +---------------------------+---------------------------+
*  60 |         IDCCTRAT          |///////////////////////////|
*     +---------------------------+///////////////////////////|
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  70 |                       IDCFGUID                        |
*     |                                                       |
*     +-------------------------------------------------------+
*  80 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  F0 |///////////////////////////////////////////////////////|
*     |///////////////////////////////////////////////////////|
*     +-------------+------+------+------+------+------+------+
* 100 |  IDCOACS    |IDCACL|:AERL |:FRMW |IDCLPA|:ELPE |:NPSS |
*     +------+------+------+------+------+------+------+------+
* 108 |:AVSCC|:APSTA|  IDCWCTMP   |  IDCCCTMP   |  IDCMTFA    |
*     +------+------+-------------+-------------+-------------+
* 110 |         IDCHMPRE          |         IDCHMMIN          |
*     +---------------------------+---------------------------+
* 118 |                       IDCTNCAP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 128 |                       IDCUNCAP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 138 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +------+------+-------------+---------------------------+
* 200 |:SQES |:CQES |  IDCMXCMD   |          IDCNN            |
*     +------+------+-------------+------+------+-------------+
* 208 |  IDCONCS    |  IDCFUSES   |IDCFNA|IDCVWC|  IDCAWUN    |
*     +-------------+------+------+------+------+-------------+
* 210 |  IDCAWUPF   |:NVSCC|//////|   IDCACW    |/////////////|
*     +-------------+------+------+-------------+-------------+
* 218 |         IDCSGLS           |///////////////////////////|
*     +---------------------------+///////////////////////////|
* 220 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
* 300 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
* 400 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
* 700 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
* 800 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
* C00 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*1000
*
*** IDCDS - NVMe Identify Controller Data Structure
 
 
  IDCDS Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
IDCACL         0102
IDCACW         0214
IDCAERL        0103
IDCAPSTA       0109
IDCAVSCC       0108
IDCAWUN        020E
IDCAWUPF       0210
IDCCCTMP       010C
IDCCMIC        004C
IDCCNTLI       004E
IDCCOMP        0208 00000001
IDCCQES        0201
IDCCTRAT       0060
IDCDSMGT       0208 00000004
IDCELPE        0106
IDCFGUID       0070
IDCFNA         020C
IDCFR          0040
IDCFRMW        0104
IDCFUSES       020A
IDCFWSLS       0104 01
IDCFWSLT       0104 0E
IDCHMMIN       0114
IDCHMPRE       0110
IDCIEEE        0049
IDCLPA         0105
IDCLPAEX       0105 04
IDCMDTS        004D
IDCMN          0018
IDCMTFA        010E
IDCMXCMD       0202
IDCNN          0204
IDCNPSS        0107
IDCNVSCC       0212
IDCOACS        0100
IDCOAES        005C
IDCONCS        0208
IDCRAB         0048
IDCRES         0208 00000020
IDCRTD3E       0058
IDCRTD3R       0054
IDCSGLS        0218
IDCSN          0004
IDCSQES        0200
IDCSS          0208 00000010
IDCSSVID       0002
IDCTNCAP       0118
IDCTS          0208 00000040
IDCUNCAP       0128
IDCVER         0050
IDCVID         0000
IDCVWC         020D
IDCWCTMP       010A
IDCWRUNC       0208 00000002
IDCWRZER       0208 00000008
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:53:12 EDT.
Copyright IBM Corporation, 1990, 2022