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

     /*
      * Ioctl definitions for the Target Mode SCSI Proccessor Target driver for CAM.
      *
      * Copyright (c) 1998 Justin T. Gibbs.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions, and the following disclaimer,
     *    without modification, immediately at the beginning of the file.
     * 2. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
     * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    #ifndef _CAM_SCSI_SCSI_TARGETIO_H_
    #define _CAM_SCSI_SCSI_TARGETIO_H_
    #ifndef KERNEL
    #include <sys/types.h>
    #endif
    #include <sys/ioccom.h>
    
    #include <cam/cam.h>
    #include <cam/cam_ccb.h>
    
    /* Determine and clear exception state in the driver */
    typedef enum {
            TARG_EXCEPT_NONE           = 0x00,
            TARG_EXCEPT_DEVICE_INVALID = 0x01,
            TARG_EXCEPT_BDR_RECEIVED   = 0x02,
            TARG_EXCEPT_BUS_RESET_SEEN = 0x04,
            TARG_EXCEPT_UNKNOWN_ATIO   = 0x08,
    } targ_exception;
    
    #define TARGIOCFETCHEXCEPTION   _IOR('C', 1, targ_exception)
    #define TARGIOCCLEAREXCEPTION   _IOW('C', 2, targ_exception)
    
    /*
     * Retreive an Accept Target I/O CCB for a command that is not handled
     * directly by the kernel target driver.
     */
    #define TARGIOCFETCHATIO        _IOR('C', 3, struct ccb_accept_tio)
    
    /*
     * Used for responding to incoming ATIO requests.  XPT_CONTINUE_TARG_IO
     * operations are the norm, but ccb types for manipulating the device
     * queue, etc. can also be used if error handling is to be performed by the
     * user land process.
     */
    #define TARGIOCCOMMAND          _IOWR('C', 4, union ccb)
    
    
    typedef enum {
            UA_NONE         = 0x00,
            UA_POWER_ON     = 0x01,
            UA_BUS_RESET    = 0x02
    } ua_types;
    
    typedef enum {
            CA_NONE         = 0x00,
            CA_UNIT_ATTN    = 0x01,
            CA_CMD_SENSE    = 0x02
    } ca_types;
    
    struct initiator_state {
            ua_types   pending_ua;
            ca_types   pending_ca;
            struct     scsi_sense_data sense_data;
    };
    
    struct ioc_initiator_state {
            u_int   initiator_id;
            struct  initiator_state istate;
    };
    
    /*
     * Get and Set Contingent Allegiance and Unit Attention state 
     * presented by the target driver.  This is usually used to
     * properly report and error condition in response to an incoming
     * ATIO request handled by the userland process.
     *
     * The initiator_id must be properly initialized in the ioc_initiator_state
     * structure before calling TARGIOCGETISTATE.
     */
   #define TARGIOCGETISTATE        _IOWR('C', 6, struct ioc_initiator_state)
   #define TARGIOCSETISTATE        _IOW('C', 5, struct ioc_initiator_state)
   
   struct ioc_alloc_unit {
           path_id_t       path_id;
           target_id_t     target_id;
           lun_id_t        lun_id;
           u_int           unit;
   };
   
   /*
    * Allocate and Free a target mode instance.  For allocation, the path_id,
    * target_id, and lun_id fields must be set.  On successful completion
    * of the ioctl, the unit field will indicate the unit number of the
    * newly created instance.  For de-allocation, all fields must match
    * an instance in the inactive (i.e. closed) state.
    */
   #define TARGCTLIOALLOCUNIT      _IOWR('C', 7, struct ioc_alloc_unit)
   #define TARGCTLIOFREEUNIT       _IOW('C', 8, struct ioc_alloc_unit)
   #endif /* _CAM_SCSI_SCSI_TARGETIO_H_ */

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