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scsi_inquiry(9S)	  Data Structures for Drivers	      scsi_inquiry(9S)

NAME
       scsi_inquiry - SCSI inquiry structure

SYNOPSIS
       #include <sys/scsi/scsi.h>

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

DESCRIPTION
       The  scsi_inquiry  structure  contains 36 required bytes, followed by a
       variable number of vendor-specific parameters. Bytes 59 through 95,  if
       returned,  are  reserved	 for future standardization. This structure is
       part  of	 scsi_device(9S)  structure  and  typically   filled   in   by
       scsi_probe(9F).

STRUCTURE MEMBERS
	 Lines that start with an 'X' will be deleted before submission;
	 they are being classified as unstable at this time.

	 uchar_t  inq_dtype;	     /* Periph. qualifier, dev. type */
	 uchar_t  inq_rmb      :1;   /* Removable media */
	 uchar_t  inq_qual     :7;   /* Dev. type qualifier */
	 uchar_t  inq_iso      :2;   /* ISO version */
	 uchar_t  inq_ecma     :3;   /* EMCA version */
	 uchar_t  inq_ansi     :3;   /* ANSII version */
	 uchar_t  inq_aenc     :1;   /* Async event notif. cap. */
	 uchar_t  inq_trmiop   :1;   /* Supports TERMINATE I/O PROC msg */
	 uchar_t  inq_normaca  :1;   /* setting NACA bit supported */
	 uchar_t  inq_hisup    :1;   /* hierarchical addressing model */
	 uchar_t  inq_rdf      :4;   /* Response data format */
	 uchar_t  inq_len	     /* Additional length */
	 uchar_t  inq_sccs     :1;   /* embedded storage array */
	 Xuchar_t inq_acc      :1;   /* access controls coordinator */
	 uchar_t  inq_tpgse    :1;   /* explicit asymmetric lun access */
	 uchar_t  inq_tpgsi    :1;   /* implicit asymmetric lun access */
	 Xuchar_t inq_3pc      :1;   /* third-party copy */
	 Xuchar_t inq_protect  :1;   /* supports protection information */
	 uchar_t  inq_bque     :1;   /* basic queueing */
	 uchar_t  inq_encserv  :1;   /* embedded enclosure services */
	 uchar_t  inq_dualp    :1;   /* dual port device */
	 uchar_t  inq_mchngr   :1;   /* embedded/attached to medium chngr */
	 uchar_t  inq_addr16   :1;   /* SPI: supports 16 bit wide SCSI addr */
	 uchar_t  inq_wbus16   :1;   /* SPI: Supports 16 bit wide data xfers */
	 uchar_t  inq_sync     :1;   /* SPI: Supports synchronous data xfers */
	 uchar_t  inq_linked   :1;   /* Supports linked commands */
	 uchar_t  inq_cmd_que  :1;   /* Supports command queueing */
	 uchar_t  inq_sftre    :1;   /* Supports Soft Reset option */
	 char	  inq_vid[8];	     /* Vendor ID */
	 char	  inq_pid[16];	     /* Product ID */
	 char	  inq_revision[4];   /* Revision level */
	 uchar_t  inq_clk      :2;   /* SPI3 clocking */
	 uchar_t  inq_qas      :1;   /* SPI3: quick arb sel */
	 uchar_t  inq_ius      :1;   /* SPI3: information units */

       inq_dtype  identifies  the  type	 of  device.  Bits 0 - 4 represent the
       Peripheral Device Type and bits 5 - 7 represent the  Peripheral	Quali‐
       fier.  The  following values are appropriate for Peripheral Device Type
       field:

       DTYPE_DIRECT	   Direct-access device (for example, magnetic disk).

       DTYPE_SEQUENTIAL	   Sequential-access  device  (for  example,  magnetic
			   tape).

       DTYPE_PRINTER	   Printer device.

       DTYPE_PROCESSOR	   Processor device.

       DTYPE_WORM	   Write-once	device	 (for  example,	 some  optical
			   disks).

       DTYPE_RODIRECT	   CD-ROM device.

       DTYPE_SCANNER	   Scanner device.

       DTYPE_OPTICAL	   Optical memory device (for  example,	 some  optical
			   disks).

       DTYPE_CHANGER	   Medium Changer device (for example, jukeboxes).

       DTYPE_COMM	   Communications device.

       DTYPE_ARRAY_CTRL	   Array controller device (for example, RAID).

       DTYPE_ESI	   Enclosure services device.

       DTYPE_RBC	   Simplified direct-access device.

       DTYPE_OCRW	   Optical card reader/writer device.

       DTYPE_BRIDGE	   Bridge.

       DTYPE_OSD	   Object-based storage device.

       DTYPE_UNKNOWN	   Unknown or no device type.

       DTYPE_MASK	   Mask to isolate Peripheral Device Type field.

       The  following  values  are  appropriate	 for  the Peripheral Qualifier
       field:

       DPQ_POSSIBLE	The specified peripheral device type is currently con‐
			nected	to  this  logical  unit.  If the target cannot
			determine whether or not a  physical  device  is  cur‐
			rently	connected,  it	uses this peripheral qualifier
			when returning the INQUIRY data. This peripheral qual‐
			ifier  does  not  imply	 that  the device is ready for
			access by the initiator.

       DPQ_SUPPORTED	The target is  capable	of  supporting	the  specified
			peripheral  device type on this logical unit. However,
			the physical device is not currently connected to this
			logical unit.

       DPQ_NEVER	The  target  is	 not  capable of supporting a physical
			device on this logical unit. For this peripheral qual‐
			ifier,	the  peripheral	 device	 type  shall be set to
			DTYPE_UNKNOWN to provide compatibility	with  previous
			versions of SCSI. For all other peripheral device type
			values, this peripheral qualifier is reserved.

       DPQ_VUNIQ	This is a vendor-unique qualifier.

       DPQ_MASK		Mask to isolate Peripheral Qualifier field.

       DTYPE_NOTPRESENT is the peripheral qualifier DPQ_NEVER and the  periph‐
       eral device type DTYPE_UNKNOWN combined.

       inq_rmb, if set, indicates that the medium is removable.

       inq_qual is a device type qualifier.

       inq_iso indicates ISO version.

       inq_ecma indicates ECMA version.

       inq_ansi indicates ANSI version.

       inq_aenc, if set, indicates that the device supports asynchronous event
       notification capability as defined in SCSI-2 specification.

       inq_trmiop, if set, indicates that the device  supports	the  TERMINATE
       I/O PROCESSmessage.

       inq_normaca,  if	 set,  indicates  that the device supports setting the
       NACA bit to 1 in CDB.

       inq_hisip, if set, indicates the SCSI target device uses the hierarchi‐
       cal addressing model to assign LUNs to logical units.

       inq_rdf,	 if  set,  indicates  the  INQUIRY  data response data format:
       "RDF_LEVEL0" means that this structure complies with the	 SCSI-1	 spec,
       "RDF_CCS"  means that this structure complies with the CCS pseudo-spec,
       and "RDF_SCSI2" means that the structure	 complies  with	 the  SCSI-2/3
       spec.

       inq_len,	 if  set,  is  the  additional length field that specifies the
       length in bytes of the parameters.

       inq_sccs, if set, indicates the	target	device	contains  an  embedded
       storage array controller component.

       inq_acc,	 if  set,  indicates  that the logical unit contains an access
       controls coordinator (this structure member will be deleted before sub‐
       mission. It is being classified as unstable at this time).

       inq_tpgse,  if  set,  indicates	that  implicit asymmetric logical unit
       access is supported.

       inq_tpgsi, if set, indicates  that  explicit  asymmetric	 logical  unit
       access is supported.

       inq_3pc,	 if set, indicates that the SCSI target device supports third-
       party copy commands (this structure member will be deleted before  sub‐
       mission. It is being classified as unstable at this time).

       inq_protect,  if	 set, indicates that the logical unit supports protec‐
       tion information (this structure member will be deleted before  submis‐
       sion. It is being classified as unstable at this time).

       inq_bque,  if  set, indicates that the logical unit supports basic task
       management.

       inq_encserv, if set, indicates that the	device	contains  an  embedded
       enclosure services component (ses(7D)).

       inq_dualp,  if  set, indicates that the SCSI target device supports two
       or more ports.

       inq_mchngr, if set, indicates that the SCSI target device supports com‐
       mands to control an attached media changer.

       inq_addr16, if set, indicates that the device supports 16-bit wide SCSI
       addresses.

       inq_wbus16, if set, indicates that the device supports 16-bit wide data
       transfers.

       inq_sync,  if  set, indicates that the device supports synchronous data
       transfers.

       inq_linked, if set, indicates that the device supports linked  commands
       for this logical unit.

       inq_cmdque,  if	set, indicates that the device supports tagged command
       queueing.

       inq_sftre, if reset, indicates that the device responds	to  the	 RESET
       condition  with	the  hard  RESET alternative. If this bit is set, this
       indicates that the device responds with the soft RESET alternative.

       inq_vid contains eight bytes of ASCII data identifying  the  vendor  of
       the product.

       inq_pid contains sixteen bytes of ASCII data as defined by the vendor.

       inq_revision  contains  four bytes of ASCII data as defined by the ven‐
       dor.

       inq_clk clocking of the SPI3 target port.

       inq_gas the SPI3 target port supports quick arbitration and selection.

       inq_ius the SPI3 target device supports information unit transfers.

SEE ALSO
       scsi_probe(9F), scsi_device(9S)

       ANSI Small Computer System Interface-2 (SCSI-2)

       ANSI SCSI Primary Commands-3 (SPC-3)

       http://t10.org/drafts.htm#spc3

       Writing Device Drivers

SunOS 5.11			  5 Nov 2008		      scsi_inquiry(9S)
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