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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/cam/scsi/scsi_targetio.h
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/*-

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 * Ioctl definitions for the SCSI Target Driver

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 *

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 * SPDX-License-Identifier: BSD-2-Clause

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 *

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 * Copyright (c) 2002 Nate Lawson.

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 * Copyright (c) 1998 Justin T. Gibbs.

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 * All rights reserved.

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 * 1. Redistributions of source code must retain the above copyright

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 *    notice, this list of conditions, and the following disclaimer,

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 *    without modification, immediately at the beginning of the file.

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 * 2. The name of the author may not be used to endorse or promote products

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 *    derived from this software without specific prior written permission.

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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR

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 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

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 * SUCH DAMAGE.

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 */

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#ifndef _CAM_SCSI_SCSI_TARGETIO_H_

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#define _CAM_SCSI_SCSI_TARGETIO_H_

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#ifndef _KERNEL

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#include <sys/types.h>

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#endif

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#include <sys/ioccom.h>

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#include <cam/cam.h>

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#include <cam/cam_ccb.h>

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/*

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 * CCBs (ATIO, CTIO, INOT, REL_SIMQ) are sent to the kernel driver

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 * by writing one or more pointers.  The user receives notification

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 * of CCB completion through poll/select/kqueue and then calls

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 * read(2) which outputs pointers to the completed CCBs.

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 */

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/*

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 * Enable and disable a target mode instance.  For enabling, the path_id,

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 * target_id, and lun_id fields must be set.  The grp6/7_len fields

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 * specify the length of vendor-specific CDBs the target expects and

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 * should normally be set to 0.  On successful completion

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 * of enable, the specified target instance will answer selection.

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 * Disable causes the target instance to abort any outstanding commands

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 * and stop accepting new ones.  The aborted CCBs will be returned to

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 * the user via read(2) or discarded if the user closes the device.

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 * The user can then re-enable the device for a new path.

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 */

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struct ioc_enable_lun {

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	path_id_t	path_id;

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	target_id_t	target_id;

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	lun_id_t	lun_id;

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	int		grp6_len;

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	int		grp7_len;

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};

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#define TARGIOCENABLE	_IOW('C', 5, struct ioc_enable_lun)

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#define TARGIOCDISABLE	 _IO('C', 6)

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/*

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 * Set/clear debugging for this target mode instance

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 */

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#define	TARGIOCDEBUG	_IOW('C', 7, int)

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TAILQ_HEAD(ccb_queue, ccb_hdr);

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#endif /* _CAM_SCSI_SCSI_TARGETIO_H_ */

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