xref: /illumos-gate/usr/src/man/man9s/scsi_extended_sense.9s (revision fe4627ef755b7c263f91a0e6f07cdca5d7083501)
te
Copyright (c) 2000, Sun Microsystems, Inc. , All Rights Reserved
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
SCSI_EXTENDED_SENSE 9S "Aug 30, 1995"
NAME
scsi_extended_sense - SCSI extended sense structure
SYNOPSIS

#include <sys/scsi/scsi.h>
INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).

DESCRIPTION

The scsi_extended_sense structure for error codes 0x70 (current errors) and 0x71 (deferred errors) is returned on a successful REQUEST SENSE command. SCSI-2 compliant targets are required to return at least the first 18 bytes of this structure. This structure is part of scsi_device(9S) structure.

STRUCTURE MEMBERS
uchar_t es_valid :1; /* Sense data is valid */
uchar_t es_class :3; /* Error Class- fixed at 0x7 */
uchar_t es_code :4; /* Vendor Unique error code */
uchar_t es_segnum; /* Segment number: for COPY cmd only */
uchar_t es_filmk :1; /* File Mark Detected */
uchar_t es_eom :1; /* End of Media */
uchar_t es_ili :1; /* Incorrect Length Indicator */
uchar_t es_key :4; /* Sense key */
uchar_t es_info_1; /* Information byte 1 */
uchar_t es_info_2; /* Information byte 2 */
uchar_t es_info_3; /* Information byte 3 */
uchar_t es_info_4; /* Information byte 4 */
uchar_t es_add_len; /* Number of additional bytes */
uchar_t es_cmd_info[4]; /* Command specific information */
uchar_t es_add_code; /* Additional Sense Code */
uchar_t es_qual_code; /* Additional Sense Code Qualifier */
uchar_t es_fru_code; /* Field Replaceable Unit Code */
uchar_t es_skey_specific[3]; /* Sense Key Specific information */

es_valid, if set, indicates that the information field contains valid information.

es_class should be 0x7.

es_code is either 0x0 or 0x1.

es_segnum contains the number of the current segment descriptor if the REQUEST SENSE command is in response to a COPY, COMPARE, and COPY AND VERIFY command.

es_filmk, if set, indicates that the current command had read a file mark or set mark (sequential access devices only).

es_eom, if set, indicates that an end-of-medium condition exists (sequential access and printer devices only).

es_ili, if set, indicates that the requested logical block length did not match the logical block length of the data on the medium.

es_key indicates generic information describing an error or exception condition. The following sense keys are defined: KEY_NO_SENSE

Indicates that there is no specific sense key information to be reported.

KEY_RECOVERABLE_ERROR

Indicates that the last command completed successfully with some recovery action performed by the target.

KEY_NOT_READY

Indicates that the logical unit addressed cannot be accessed.

KEY_MEDIUM_ERROR

Indicates that the command terminated with a non-recovered error condition that was probably caused by a flaw on the medium or an error in the recorded data.

KEY_HARDWARE_ERROR

Indicates that the target detected a non-recoverable hardware failure while performing the command or during a self test.

KEY_ILLEGAL_REQUEST

Indicates that there was an illegal parameter in the CDB or in the additional parameters supplied as data for some commands.

KEY_UNIT_ATTENTION

Indicates that the removable medium might have been changed or the target has been reset.

KEY_WRITE_PROTECT/KEY_DATA_PROTECT

Indicates that a command that reads or writes the medium was attempted on a block that is protected from this operation.

KEY_BLANK_CHECK

Indicates that a write-once device or a sequential access device encountered blank medium or format-defined end-of-data indication while reading or a write-once device encountered a non-blank medium while writing.

KEY_VENDOR_UNIQUE

This sense key is available for reporting vendor-specific conditions.

KEY_COPY_ABORTED

Indicates that a COPY, COMPARE, and COPY AND VERIFY command was aborted.

KEY_ABORTED_COMMAND

Indicates that the target aborted the command.

KEY_EQUAL

Indicates that a SEARCH DATA command has satisfied an equal comparison.

KEY_VOLUME_OVERFLOW

Indicates that a buffered peripheral device has reached the end-of-partition and data might remain in the buffer that has not been written to the medium.

KEY_MISCOMPARE

Indicates that the source data did not match the data read from the medium.

KEY_RESERVE

Indicates that the target is currently reserved by a different initiator.

es_info_{1,2,3,4} is device-type or command specific.

es_add_len indicates the number of additional sense bytes to follow.

es_cmd_info contains information that depends on the command that was executed.

es_add_code (ASC) indicates further information related to the error or exception condition reported in the sense key field.

es_qual_code (ASCQ) indicates detailed information related to the additional sense code.

es_fru_code (FRU) indicates a device-specific mechanism to unit that has failed.

es_skey_specific is defined when the value of the sense-key specific valid bit (bit 7) is 1. This field is reserved for sense keys not defined above.

SEE ALSO

scsi_device(9S)

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

Writing Device Drivers