scsi_address.h revision f3f5a4dd0d8a3e3659add4eeca8b25772c3b35a2
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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
* 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]
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* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_SCSI_SCSI_ADDRESS_H
#define _SYS_SCSI_SCSI_ADDRESS_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
/*
* SCSI address definition.
*
* A scsi_address structure stores the host routing and device unit-address
* information necessary to reference a specific SCSI target device logical
* unit function.
*
* The host routing information is stored in the scsi_hba_tran(9S) structure
* pointed to by the a_hba_tran field.
*
* The device unit-address information is SCSA's representation of the
* "@unit-address" portion of a SCSI target driver device node in the
* /devices tree. Separate components of the device unit-address information
* define the target address and the logical unit address of a target.
* In general, device unit-address information is used exclusively by the
* host adapter driver (the exception being target drivers communicating
* with SCSI Parallel Interconnect (SPI) SCSI-1 devices that embed SCSI
* logical unit addressing in the CDB).
*
* Thus the a_target and a_lun fields are for compatibility purposes only.
* They are not defined in SCSI-3. SCSI-3 target drivers which need to
* communicate with SPI SCSI-1 devices that embed logical unit addresses in
* the CDB should obtain target and logical unit addresses from the device's
* properties (SCSI_ADDR_PROP_TARGET and SCSI_ADDR_PROP_LUN).
*
* a_sublun is reserved for internal use only and is never part of DDI
* (scsi_address(9S)).
*/
struct scsi_address {
/* Not used */
};
/* Address property names */
#define SCSI_ADDR_PROP_TARGET "target"
#define SCSI_ADDR_PROP_LUN "lun"
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SCSI_SCSI_ADDRESS_H */