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

u_char

inq_dtype;

/* peripheral qualifier, device type * /

u_char    inq_rmb            : 1;  /* removable media * /
u_char    inq_qual           : 7;  /* device type qualifier * /
u_char    inq_iso            : 2;  /* ISO version * /
u_char    inq_ecma           : 3;  /* ECMA version * /
u_char    inq_ansi           : 3;  /* ANSI version * /
u_char    inq_aenc           : 1;  /* async event notification cap. * /
u_char    inq_trmiop         : 1;  /* supports TERMINATE I/O PROC msg * /
u_char    inq_rdf            : 4;  /* response data format * /
u_char    inq_len;                 /* additional length * /
u_char    inq_reladdr        : 1;  /* supports relative addressing * /
u_char    inq_wbus32         : 1;  /* supports 32 bit wide data xfers * /
u_char    inq_wbus16         : 1;  /* supports 16 bit wide data xfers * /
u_char    inq_sync           : 1;  /* supports synchronous data xfers * /
u_char    inq_linked         : 1;  /* supports linked commands * /
u_char    inq_cmdque         : 1;  /* supports command queueing * /
u_char    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 * /

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

DTYPE_ARRAY_CTRL

Array controller device (for example, RAID).

DTYPE_DIRECT

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

DTYPE_ESI

Enclosure services device.

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_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 connected

to this logical unit. If the target cannot determine whether or not a physical device is currently connected, it shall also use

this peripheral qualifier when returning the INQUIRY data.

This peripheral qualifier 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 dev-

ice 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 qualifier, 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.

DTYPE_NOTPRESENT is the peripheral qualifier DPQ_NEVER and the peripheral 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 PROCESS message.

inq_rdf, if reset, indicates the INQUIRY data format is as specified in SCSI-1.

inq_inq_len is the additional length field which specifies the length in bytes of the parameters.

inq_reladdr, if set, indicates that the device supports the relative addressing mode of this logical unit.

inq_wbus32, if set, indicates that the device supports 32-bit wide data transfers.

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 vendor.

SEE ALSO

scsi_probe(9F), scsi_device(9S)

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

Writing Device Drivers