The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/cam/scsi/scsi_targetio.h

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    1 /*-
    2  * Ioctl definitions for the SCSI Target Driver
    3  *
    4  * Copyright (c) 2002 Nate Lawson.
    5  * Copyright (c) 1998 Justin T. Gibbs.
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions, and the following disclaimer,
   13  *    without modification, immediately at the beginning of the file.
   14  * 2. The name of the author may not be used to endorse or promote products
   15  *    derived from this software without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   21  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD$
   30  */
   31 
   32 #ifndef _CAM_SCSI_SCSI_TARGETIO_H_
   33 #define _CAM_SCSI_SCSI_TARGETIO_H_
   34 #ifndef _KERNEL
   35 #include <sys/types.h>
   36 #endif
   37 #include <sys/ioccom.h>
   38 
   39 #include <cam/cam.h>
   40 #include <cam/cam_ccb.h>
   41 
   42 /*
   43  * CCBs (ATIO, CTIO, INOT, REL_SIMQ) are sent to the kernel driver
   44  * by writing one or more pointers.  The user receives notification
   45  * of CCB completion through poll/select/kqueue and then calls
   46  * read(2) which outputs pointers to the completed CCBs.
   47  */
   48 
   49 /*
   50  * Enable and disable a target mode instance.  For enabling, the path_id,
   51  * target_id, and lun_id fields must be set.  The grp6/7_len fields
   52  * specify the length of vendor-specific CDBs the target expects and
   53  * should normally be set to 0.  On successful completion
   54  * of enable, the specified target instance will answer selection.
   55  * Disable causes the target instance to abort any outstanding commands
   56  * and stop accepting new ones.  The aborted CCBs will be returned to
   57  * the user via read(2) or discarded if the user closes the device.
   58  * The user can then re-enable the device for a new path.
   59  */
   60 struct ioc_enable_lun {
   61         path_id_t       path_id;
   62         target_id_t     target_id;
   63         lun_id_t        lun_id;
   64         int             grp6_len;
   65         int             grp7_len;
   66 };
   67 #define TARGIOCENABLE   _IOW('C', 5, struct ioc_enable_lun)
   68 #define TARGIOCDISABLE   _IO('C', 6)
   69 
   70 /*
   71  * Set/clear debugging for this target mode instance
   72  */
   73 #define TARGIOCDEBUG    _IOW('C', 7, int)
   74 
   75 TAILQ_HEAD(ccb_queue, ccb_hdr);
   76 
   77 #endif /* _CAM_SCSI_SCSI_TARGETIO_H_ */

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